Lighting device, display device and television set

FIELD: electricity.

SUBSTANCE: lighting device 12 comprises multiple point sources 17 of light and a base 14, where point sources of light 17 are placed, which are classified into two or more colour ranges A, B and C, in accordance with light colours. Each colour range is defined by means of a square, each side of which has length equal to 0.01 in the colour schedule of light space of the International Lighting Commission 1931.

EFFECT: reproduction of light of practically even light.

26 cl, 15 dwg

 

The technical field to which the invention relates.

[0001] the Present invention relates to a lighting device, display device and television receiver.

Prior art

[0002] a Liquid crystal panel included in the liquid crystal display device such as LCD TV, does not emit light, and therefore require a backlight device that has a separate lighting device. It is widely known backlight device located on the rear side of the liquid crystal panel (that is, on the opposite side relative to the side surface of the display). It includes many light sources (such as LEDs).

[0003] Such a backlight device has a configuration in which are mounted the LEDs white light. LEDs white light have a tendency to play shades of white. The device disclosed in patent document 1 is known as a device that can reproduce the light of the desired white color through the use of LEDs white light, which tends to reproduce colors. If the light emitted by an led is yellowish-white, the led si is its glow set up so as to emit light with a higher intensity of received light of the desired white color.

[0004] Patent document 1: Publication of unexamined patent application of Japan No. 2008-153039

The problem that will be solved by the inventions

[0005] the Device disclosed in patent document 1 uses the LEDs of two different types. Therefore, the LEDs are not easy to manage. In addition, if the LEDs are white light reproduce greenish-white light, the light of the desired white color cannot be obtained. To obtain light of a desired white color can be selectively used LEDs that can reproduce the light of the desired white color. In this case, can be used only on selected LEDs white light. That is, it must be made more LEDs white light than necessary. This can lead to an increase in the cost of the device backlight.

The disclosure of the present invention

[0006] the Present invention was developed with consideration of the aforementioned circumstances. The aim of the present invention is to provide a lighting device that can reproduce the light almost uniform color. Other objectives of the present invention is the provision of a display device, vkluchaya what about in such a lighting device, as well as a television receiver including such a display device.

A means for solving problems

[0007] To solve the above problem, a lighting device of the present invention includes a substrate and multiple point light sources can be classified into two or more color ranges, in accordance with the flowers of light. Each color range is defined by a square, each side of which has a length equal to 0.01 in the color chart, the color space of the CIE (International Commission on Illumination) 1931. The Foundation puts on himself are point sources of light of different color ranges.

[0008] When using point light sources only the same color range, to obtain the required number should be made larger number of point sources of light than necessary. In addition, certain of the point light sources may not be used. As a consequence, the cost may increase. In accordance with the present invention, are point sources of light of different color ranges, each of which is defined by a square, each side of which has a length equal to 0.01 in the color chart color space CIE 1931. The color range defined through the square, each side of which has a length equal to 0.01 in the color chart color space CIE 1931, the color range in which the shades of color of the point light sources are not visible. The use of point light sources of different color ranges can help reduce the cost compared with the use of point light sources of the same color range. The reason is the possibility of using point light sources a wider color ranges. In addition, when using point light sources of different color ranges can be obtained a uniform color. That is, there can be obtained the light almost uniform color.

[0009] the Point light sources can be located on an oblong Board, which is installed on the base. By setting fees, which are point light sources, increased efficiency compared to sequence the installation of point light sources.

[0010] the Point light sources can be located along a line in the longitudinal direction of the Board. When using this configuration, the location of the point light sources is determined in accordance with the location of the Board. Based on the foregoing, may b shall be easily designed the location of the point light sources.

[0011] the Point light sources can be located on the Board with equal intervals. When using this configuration, the location of point sources of light is not changed in accordance with the card. Based on the foregoing, the fee can also be used without changes, even in the case of changing the size of the lighting device.

[0012] the Point light sources can be arranged in multiple lines in the longitudinal direction of the Board. When using this configuration can be reduced the number of boards required for the appropriate number of groups of point sources of light. Based on the foregoing, may be the reduced number of parts, and can also be increased efficiency.

[0013] the Point light sources that are adjacent on the Board, can have the same color range or adjacent color bands. Since the color of light played through the adjacent point light sources, do not differ from each other significantly, the probability of occurrence of color shading is reduced.

[0014] Many cards can be arranged in parallel to each other, and the point light sources which are adjacent in the direction of the location of the cards can have the same color range or adjacent color ranges When using this configuration, the color of light, reproduced by point light sources that are adjacent in the direction of the location cards, do not differ from each other significantly. Based on the above, the likelihood of colors is reduced.

[0015] Many cards can be arranged in parallel to each other. Point light sources can be located so that the location of the point light sources on the Board in the first row, in accordance with the colour ranges, different from the location of the point light sources on the Board in the second row, in accordance with the color bands. In this configuration, the location of the point light sources on the Board in the first row, in accordance with the colour ranges, different from the location of the point light sources on the Board in the second row, in accordance with the color bands. Based on the above, reduces the likelihood of uneven arrangement of the light sources of the same color range in a particular area, and consequently reduces the likelihood of shades of color.

[0016] many of the cards can be arranged in parallel to each other, as well as fees, which are adjacent in the direction of arrangement, rotated 180 degrees relative to each other. Through this the person location cards, i.e. opposite to each other, the location of the point light sources, in accordance with the color ranges can be changed. Based on the above, the likelihood of colors is reduced.

[0017] Many cards are in their longitudinal direction, and connecting the connectors are connected via the connector. By making boards of different lengths, i.e., circuit boards, which are different number of point light sources, and connected via connectors, the card can be used in lighting devices of different sizes (or different lengths). That is, the lighting devices of different sizes do not require different fees. This contributes to cost reduction.

[0018] the Connector may include a first connector and a second connector that interlock with each other. At least one of the first and second connectors may protrude outward from the terminal of the card relative to the longitudinal direction of the Board. Because at least one of the first and second connectors sticking out of the Board, the first and second connectors can be smoothly coupled to the connection located adjacent the first and second connectors.

[0019] the Connector may have ivory or white color. Because the connector them is no relatively high light reflectance, the probability that the connector will absorb light, is reduced. Based on the foregoing, the probability of occurrence of uneven brightness is reduced.

[0020] the Base may have a rectangular shape in horizontal projection. The fee may be located in its longitudinal direction, which coincides with the longitudinal direction of the base. When using this configuration, the number of circuit boards can be reduced compared with the number of cards, arranged in their longitudinal direction, which coincides with the direction of the short side of the base. Based on the foregoing, the number of control units configured to control on/off of point light sources can be reduced, and consequently, can be reduced cost.

[0021] the Point light sources may be light emitting diodes. When using this configuration can be provided with light sources with long life and low energy consumption.

[0022] the Point light sources may be light emitting diodes, comprising crystals that emit blue light, the phosphor having a maximum light emission in the yellow color range, and applied to the appropriate crystals that emit blue light, for the emission of white light.

Point East is czniki light may be light emitting diodes, includes crystals that emit blue light, the phosphor having a maximum light emission in the green color range, as well as having the maximum light emission in the red color range, and applied to the appropriate crystal, emitting blue light to emit white light.

Point light sources may be light emitting diodes, comprising crystals that emit blue light, the phosphor having a maximum light emission in the green color range, and the crystals that emit red light. Each crystal that emits blue light are combined with each crystal that emits red light, for the emission of white light.

Point light sources may be light emitting diodes, each of which includes a crystal that emits blue light, crystal, emitting green light, and the crystal that emits red light, which are combined to emit white light.

When configuring the light-emitting diodes for emission of white light increases the likelihood of colors. For example, can be reproduced bluish-white light. Through the use of the configuration of the present invention can be obtained even color, and also can be received light almost uniform color./p>

[0023] Each point light source may include a crystal that emits ultraviolet light, and the phosphor. Point light sources may include crystals that emit ultraviolet light, and the phosphor having the maximum light emission in the blue, green and red color range, respectively. When using such light sources increases the likelihood of colors. Through the use of the configuration of the present invention can be obtained even color, and also can be received light almost uniform color.

[0024] the Point light sources can be connected in series with the electrical connection.

When using this configuration, each point light source is fed an equal amount of current, and consequently the amount of light emitted from the point light sources may be adjusted. Based on the foregoing, can be improved uniformity of brightness on the surface of the lighting of the lighting device.

[0025] the Lighting device may further include a lens, diffuser, mounted on card so that it covers the point light sources, and configured to disperse light from the point light sources.

Because light scatters what exploits lenses of the lens, the probability of occurrence of point images of the lamps is reduced, even when increasing the spacing between adjacent point light sources. Despite the reduction in value caused by reducing the number of point light sources can be obtained almost uniform brightness distribution. In addition, by providing the lenses of the lens, the color of light emitted from the point light sources can be mixed, and therefore can be reduced the likelihood of colors. Based on the foregoing, the color can be further made uniform.

[0026] the objective lens is a light-diffusing element configured to disperse the light.

Through the lens of the lens the light diffusion can be performed correctly.

[0027] the objective lens has a surface treated by roughening the surface side of the Board.

By processing of the lens surface of the lens by roughening the surface, such as texturing, lens diffuser can better disperse the light.

[0028] To solve the previously described problem, the display device, in accordance with the present invention includes the above-mentioned lighting device and preliterate, configured to provide display using light from the lighting device.

The lighting device in such a display device can reproduce the light almost uniform color. Based on the foregoing, the display device may provide a good display quality with less unevenness.

[0029] an Example of the display panel is a liquid crystal panel. This display device is used in various devices such as liquid crystal display device of a television or a personal computer, and in particular it is suitable for a display device with a large screen.

[0030] the Television receiver, in accordance with the present invention includes the above display device.

Through this television receiver may be provided with a device with high contrast without any unevenness.

Useful effect of the invention

[0031] In accordance with a lighting device of the present invention, can be obtained the light almost uniform color. Since the display device of the present invention includes such a lighting device, the display device may provide a good display quality with a lesser degree of the unevenness. In addition, since the television receiver of the present invention includes such a display device can be provided with a device with high contrast without the occurrence of non-uniformity, in accordance with the television receiver.

Brief description of drawings

[0032] Figure 1 depicts an exploded perspective view illustrating the General construction of a television receiver, in accordance with the embodiment of the present invention;

Figure 2 depicts an exploded perspective view illustrating the General construction of the liquid crystal display device included in the television receiver;

Figure 3 depicts a view in section, illustrating the configuration of a liquid crystal display device in the direction of the long side;

Figure 4 depicts a view in section, illustrating the configuration of a liquid crystal display device in the direction of the short side;

Figure 5 depicts a top view illustrating the arrangement of the circuit boards of the led on the base;

6 depicts a partial enlarged view in section, illustrating a portion assembled on the cost of LEDs;

7 depicts a partial enlarged top view illustrating a part mounted on the Board LEDs;

Fig color depicts the howling graph color space, created by the International Commission on Illumination (CIE) in 1931;

Fig.9 depicts a partial enlarged view illustrating the classification of color ranges depicted in Fig.7;

Figure 10 depicts a schematic view illustrating the arrangement of LEDs of different color ranges on-Board LEDs;

11 depicts a schematic view illustrating another arrangement of LEDs of different color ranges on-Board LEDs;

Fig depicts a schematic view illustrating another arrangement of LEDs of different color ranges on-Board LEDs;

Fig depicts a schematic view illustrating another arrangement of LEDs of different color ranges on-Board LEDs;

Fig depicts a schematic view illustrating the different connections of boards of LEDs; and

Fig depicts a schematic view illustrating another arrangement of LEDs.

Option of carrying out the invention

[0033] the Variant of implementation of the present invention will be explained with reference to Figures 1-10. Initially will be explained a television receiver TV including a liquid crystal device 10 of the display. As illustrated in figure 1, the television receiver TV of this variant implementation includes the liquid crystal device is about 10 display front and rear Ca and Cb corps, which entered into between an LCD device 10 of the display, the source of P supply, the selector channels T and a stand S. the General form of the liquid crystal device 10 of the display (display device) is a horizontally oriented rectangle. The liquid crystal device 10 of the display is supported in a vertical position. As illustrated in figure 2, the device includes a liquid crystal panel 11, which serves as the display panel, and the device 12 backlight (lighting device), which is an external light source. They are held together by a frame 13 having the form of a frame.

[0034] Hereinafter, with reference to Figure 2 and 4 will be explained liquid crystal panel 11 and the device 12 backlight included in the liquid crystal device 10 of the display. The liquid crystal panel 11 (a display panel) is constructed so that the two glass substrates were connected to each other with a specified intermediate interval, and between the glass substrates are sealed liquid crystal. On one of the glass substrates are provided with switching components (for example, transistors TFT)connected to the source lines and the lines of the shutter, which are the PE particularily in relation to each other, pixel electrodes connected to the switching components, and orienting the film. On the other substrate is provided a color filter having color sections such as sections of R (red), G (green) and b (blue) colors, located a specified way, protivoelektrodom and orienting the film. Polarizing plates are attached to the outer surfaces of the substrates.

[0035] As illustrated in figure 2, the device 12 backlight includes a base 14, a set of 15 optical sheets (plate 15A of the lens and a plurality of optical sheets 15b arranged between the plate 15A of the lens and the liquid crystal panel 11), and the frame 16. The base 14 has a box-like shape and the open part on the light emitting side (on the side of the liquid crystal panel 11). Set of 15 optical sheet is located in such a way as to cover the open part of the base 14. Frame 16 are arranged along the long sides of the base 14. Frame 16 to hold the edges of the long sides of the plate 15A of the lens on the base 14. The outer edge of the plate 15A of the lens clamped between the base 14 and under 16. Light-emitting diodes 17 (a point light source, which in this document will be referred to as LEDs) are arranged on the base 14. The light-emitting side of the device 12 backlight is a party, the which is closer to the plate 15A of the lens, than the tube 17 with a cold cathode.

[0036] the Base 14 is made from metal. It includes a bottom plate 14a, the side plate 14b, and the receiving plates 14c. The bottom plate 14a has a rectangular shape similar to the shape of the liquid crystal panel 11. Each side plate 14b protrudes from the outer edge of the corresponding side of the bottom plate 14a. Each receiving plate 14c is from the top edge of the corresponding side plate 14b. The base 14 has the General shape of a shallow box with the open part on the front side. As illustrated in figure 3 and 4, the frame 16 is placed on the respective receiving plates 14c of the base 14. The outer edge of the reflective sheet 18 and a set of 15 optical sheets are clamped between the receiving plates 14c and under 16. The reflective sheet 18 will be explained later. Among other things, on the upper surfaces of the frames 16 are provided with mounting holes 16a. The frame 13, the frame 16 and base 14 are connected to each other by means of screws 19.

[0037] the Set 15 of the optical sheet, comprising a plate diffuser 15A and the optical sheet 15b is located on the side of the open part of the base 14. Plate 15A of the lens is constructed of a plate element made of synthetic resin with dispersed therein a light-diffusing particles. Plate 15A of the races is uivatele point scatters light, emitted from the LEDs 17, which are point light sources. As explained above, the outer edge of the plate 15A of the lens are placed on the receiving plates 14c of the base 14. On the outer edge of the plate 15A of the lens is not affected by large vertical efforts that hold the outer edge in the vertical direction.

[0038] the Two optical sheet 15b layers are arranged on the plate 15A of the lens. Each optical sheet 15b has a sheet shape with a thickness greater than the thickness of the plate 15A of the lens. Examples of the optical sheets 15b are a diffuser sheet, a lens sheet and a polarizing sheet of the reflective type. Each optical sheet 15b can be suitably selected from these lists. The optical sheet 15b converts light emitted from the LEDs 17 and passing through the plate 15A of the lens, in the planar light. The liquid crystal panel 11 is located on the upper surface of the optical sheet 15b.

[0039] the light reflecting sheet 18 is located on the inner surface of the bottom plate 14a of the base 14. The light reflecting sheet 18 is a sheet of synthetic resin, and having a surface in white that provides high light reflectance. The reflective sheet 18 has openings 18a in the positions corresponding to the lens 21 of the lens that b is will be explained later. The entire area of the bottom plate 14a of the base 14 is covered with a reflective sheet 18 with the exception of areas, which is where the lens 21 of the lens. The lens 21 of the lens facing the side of the set 15 of the optical sheets through holes 18a. Peripheries light reflecting sheet 18 is raised under the corners in such a way as to cover the inner surface of the side plates 14b. The outer edge of the reflective sheet 18 is placed on the corresponding receiving plate 14c of the base 14. With this light reflecting sheet 18, the light emitted from the LEDs 17 is reflected to the plate 15A of the lens.

[0040] the circuit Board 20 LEDs (PCB)on which are mounted the LEDs 17 and the lens 21 of the lens, are arranged on the inner surface of the bottom plate 14a of the base 14. Each card 20 LEDs is a sheet made of synthetic resin and having a surface on which are provided the drawings compounds. Drawings compounds are metal foils such as copper foil formed on the surface of the Board 20 LEDs. As illustrated in Figure 5, each card 20 LEDs is an elongated plate element. Board 20 LEDs arranged in their longitudinal direction, which coincides with the long side direction (X direction) of the base 14. The company is and, three Board 20, 20, 20 LEDs are arranged in parallel, in accordance with their longitudinal direction, in the direction of the long side of the base 14. Board 20, 20, 20 LEDs electrically and physically connected through connectors 22. Nine lines, each of which includes three boards 20, 20, 20 LEDs, are arranged in the direction of the short side (Y axis direction) of the base 14. The control unit, which is illustrated has not been connected with the boards of 20 LEDs. The control unit is configured to supply the power required to activate the LEDs 17, and the excitation control of the LEDs 17.

[0041] Each connector 22, which connects the connecting Board 20 LEDs, has a white color that provides high light reflectance. Figure 5, each connector 22 includes a first connector 22a and the second connector 22b. The first connector 22a is attached to the left Board 20 LEDs adjacent circuit boards 20 LEDs. The connector 22b is attached to the right Board 20 LEDs adjacent circuit boards 20 LEDs. The first connector 22a protrudes outward from the edge of the PCB 20 LEDs in the longitudinal direction. Connecting Board 20, 20 LEDs are connected via the first connector 22a and the second connector 22b in their grip.

[0042] the Six LEDs 17 are arranged in a line on each Board 20 is of vittitow in the longitudinal direction of the circuit Board 20 LEDs. In particular, six of the LEDs 17 are arranged with equal intervals and mounted on the Board surface 20 of the led. Each led 17 is made by the phosphor, which has a maximum light emission in the yellow color range, crystal, emitting light of one color, which emits blue light, the led 17 emitted white light. The LEDs 17 are sequentially connected by means of an electric connection by drawing connections on the circuit Board 20 LEDs. The led 17 can be produced by coating a phosphor, which has a maximum light emission in the green color range, and a phosphor having a maximum light emission in the red color range, a crystal that emits blue light, the led 17 emitted white light. The led 17 can be produced by coating a phosphor, which has a maximum light emission in the green color range, crystal, emitting blue light, and through its Association with the crystal, emitting red light, the led 17 emitted white light. The led 17 can be made through a combination of crystal, emitting blue light, crystal, emitting green light, and crystal, emitting red light, the led 17 emitted white light.

[0043] It is to illustrated on Fig.6, the lens 21 of the lens mounted on each card 20 LEDs. Each lens 21 of the lens has a dome-shape and covers the corresponding led 17. Each lens 21 of the lens is a light diffusing element having a high light scattering coefficient. The lens 21 of the lens is made of synthetic resin such as acrylic resin. From the edge regions of the bottom surface of each lens 21 of the lens are three legs 23. As illustrated in Fig.7, the legs 23 are approximately equal intervals (intervals of approximately 120 degrees) around the edge of the lens 21 of the lens, and attached to the surface of Board 20 LEDs using an adhesive material or a thermosetting resin. An inclined recess 21a is provided in the bottom surface of the lens 21 of the lens (in front of the led Board 17 and 20 LEDs)that overlaps the led 17 in a horizontal projection. An inclined recess 21 is a conical hole that continues upward. The light emitted from the led 17 is inclined recess 21a. The lower surface of the lens 21 of the lens is processed by roughening the surface, such as texturing. The recess 21b is provided in the Central area (overlying the led 17 in the horizontal projection) of the upper surface of the lens 21 of the lens (facing the plate 15A of the lens). The recess 21b continues in a downward direction. The upper surface includes two gently curved light guiding surface 21c. The light emitted from the led 17, is refracted as it passes through the air layer, the inclined recess 21a and the light guiding surface 21c. As a result, light is scattered and emitted as planar light, which passes through the wide-angle region from the light guiding surface to the plate 15A of the lens.

[0044] Each card 20 LEDs attached to the bottom plate 14a of the base 14 by means of rivets 24. Each piston 24 includes a presser portion 24a and a locking portion 24b. The presser portion 24a has a disc shape. Locking portion 24b protrudes downward from the pressing portion 24a. Fee 20 LEDs has mounting holes 20 through which passes a locking portion 24b. The bottom plate 14a of the base 14 has mounting holes 14d, which coincide with the corresponding mounting holes 20C. End part of the locking portion 24b of each piston 24 is the wide part, which can deform elastically. With the passage of the terminal part of the locking portion 24b through the installation hole 20C and mounting hole 14d, it is held on the rear surface of the bottom plate 14a of the base 14. When using this configuration, the AC is every piston 24 attaches charge 20 LEDs to the bottom plate 14a along with the pressing Board 20 LEDs using the press-on part 24a.

[0045] As illustrated in figure 2, the supporting pins 25 are arranged on the upper surfaces of the caps 24, located near the Central part of the bottom plate 14a of the base 14. Each support pin 25 has a tapered shape that narrows towards the top. If the plate 15A of the lens is bent down, the upper part of the support pins 25 are in point contact with the plate 15A of the lens. That is, the supporting pins 25 support the diffuser plate 15a at the bottom. Among other things, the caps 24 can be easily operated holding the supporting pins 25.

[0046] the Color of light emitted by the LEDs 17 white light, not the same white light. In this world there may be some shades of color. The color ranges of the LEDs 17 will be explained with reference to Fig and 9. Fig depicts a color chart color space, created by the International Commission on Illumination (CIE) in 1931. Fig.9 depicts a partial enlarged view illustrating the classification of color ranges shown on Fig.

The color of the LEDs 17 in this embodiment is changed within the range of the region R use indicated by the solid line in the graph of the CIE1931 chromaticity coordinates on Fig. As illustrated in Fig.9, the region R use is divided into trichotomy range A, B and C, respectively. Each area has a rectangular shape, each side of which has a length equal to 0.01 coordinate distances. In particular, the Central range range R is color range A. Color range And corresponds to the desired color, also in this range is the largest number of LEDs 17. The range below the range of colors And is color range C. Range, above the range of colors And is color range C. the LEDs 17, the color of which does not correspond to the desired color, are in the color ranges b and C. the Color range And is adjacent to the color range Century. Color range And is adjacent to the color range of C. that is, the color ranges b and C are not adjacent color bands. The LEDs 17 of the color range A, B or C in each square, each side of which has a length equal to 0.01 coordinate distances emit light such colors that are not recognized as different colors.

[0047] Hereinafter, with reference to Figure 10, will be explained the location of the LEDs 17 different color ranges on the boards of 20 LEDs. Figure 10 depicts a schematic view illustrating the arrangement of LEDs of different color bands on the circuit Board 20 LEDs. How ill is concentrated on Figure 10, the LEDs 17 different color ranges A, B and C are mounted on each card 20 LEDs. If we consider the circuit Board 20 of the LEDs relative to the rows (in the X direction, in the direction of the long side of the base 14, in the longitudinal direction of the circuit Board 20 LEDs), the top row includes three boards 20, 20, 20 LEDs, which are sequentially connected through the connectors 22. Each card 20 LEDs includes LEDs 17 color ranges a, b, A, B, A and C, which are arranged from left to right in the sequence figure 10. That is, the adjacent LEDs 17, 17 on the circuit Board 20 LEDs have different color ranges (A and B, or A and C).

[0048] the Second row, which is located under the first row includes three boards 20, 20, 20 LEDs, which are sequentially connected through connector 22 so that each card 20 LEDs was turned 180 degrees relative to the circuit Board 20 LEDs, located in the first row. That is, each card 20 LEDs, located in the second row includes the LEDs 17 color ranges, a, b, A, B and A, which are arranged from left to right in the sequence in Figure 10, i.e. in a reverse sequence relative to the sequence of the LEDs 17 that are in the first row. Adjacent LEDs 17, 17, con is camping on each Board 20 LEDs in the second row, have adjacent color bands (A and B, or A and C). Similarly fee 20 LEDs, located in the third row, are arranged in a manner analogous to the way the boards in the first row and the circuit Board 20 LEDs, located in the fourth row are arranged in a manner analogous to the way the boards in the second row. Board 20 LEDs in other rows are also in accordance with the above method.

[0049] In the direction of the axis X of the adjacent LEDs 17, 17 that are located on adjacent boards 20 LEDs that are serially connected in the first row, respectively, are classified into the adjacent color bands (A and C). Adjacent LEDs 17, 17 that are located on adjacent boards 20 LEDs that are serially connected in the second row, respectively, are classified into the adjacent color bands (A and C). As for all of the LEDs 17, the adjacent LEDs 17, 17 in the X direction are classified into the adjacent color bands (A and C). That is, the LEDs 17 color ranges that are not adjacent (i.e., b and C), are not near in the direction of the x axis.

[0050] If we consider the columns of circuit boards 20 LEDs (in the Y axis direction, in the direction of the short side of the base 14), in the first column, which is the leftmost, the LEDs 17 Svetovidov And, With, A, C, A,..... are arranged in this sequence. In the second column of LEDs 17 color ranges, A, B, A, B, A..... are arranged in this sequence. In the third column of LEDs 17 color ranges a, b, A, B..... are arranged in this sequence. The LEDs 17 that are located on each Board 20 LEDs in the first column, and the LEDs 17 that are located on each Board LEDs in the second column, which are arranged in parallel and adjacent to each other, are classified into the adjacent color bands (A and b or A and C). That is, the LEDs 17 color ranges that are not adjacent to the color ranges (i.e., b and C)are not arranged next to each other in the direction of the y axis.

[0051] In this embodiment, the rightmost card 20 LEDs, located in the first row are electrically connected with the extreme right - 20 LEDs, located in the second row, by means of a wire connection 26. Based on the foregoing, the LEDs 17 that are on the Board 20 LEDs in the first row, and the LEDs 17 that are on the Board 20 LEDs in the second row, can be operated by one control unit for inclusion in the moment when the power of the excitation through the leftmost cost 20 LEDs, located in the first row.

[0052] according the this embodiment, the LEDs 17 are classified into three color range A, B, and C, in accordance with the flowers of light. Each color range is defined by a square, each side of which has a length equal to 0.01 in the color chart color space CIE 1931. When using the LEDs 17 of the same color range to obtain the necessary number of LEDs 17 is required for producing a large number of the LEDs 17. Manufactured LEDs 17 can include LEDs 17 that cannot be used. In which can increase the cost. In this embodiment, LEDs are used 17 different color ranges A, B and C. In comparison with the configuration in which the LEDs 17 of the same color range, can be used LEDs 17 a wider color ranges. This contributes to cost reduction. In addition, the colors in the entire region can be averaged through the use of LEDs 17 different color ranges A, B and C. the result can be obtained the light of uniform color.

[0053] In this embodiment, a set of LEDs 17 are arranged on an elongated circuit boards 20 LEDs. Board 20 LEDs mounted on the base 14. Compared with the configuration in Motorauthority 17 mounted on the base 14, one by one, the configuration of this option may not increase efficiency.

[0054] the LEDs 17 are arranged in a line along the longitudinal direction of the circuit Board 20 LEDs. The location of the LEDs 17 is determined in accordance with the location of the circuit Board 20 LEDs. Based on the foregoing, the arrangement of LEDs 17 can be easily developed.

[0055] the LEDs 17 are arranged on each Board LEDs with equal intervals. The location of the LEDs 17 is not changed in accordance with the boards of 20 LEDs. Based on the foregoing, the Board 20 LEDs can also be used even when changing the block size 12 backlight.

[0056] the LEDs 17 adjacent color ranges A and b or A and C are adjacent to each other. That is, the color of adjacent LEDs 17 do not differ from each other significantly. Based on the above, the likelihood of colors is reduced.

[0057] the circuit Board 20 LEDs are arranged parallel to each other. Adjacent LEDs 17, relative to the parallel direction of the arrangement of boards 20 LEDs are adjacent color bands A and b or A and C. using this configuration the color ranges of the adjacent LEDs 17 not differ significantly. Based on the foregoing, the likelihood Otten is s color is reduced.

[0058] the circuit Board 20, 20 LEDs, which are located adjacent relative to the parallel direction of the arrangement of boards 20 LEDs, rotated 180 degrees relative to each other. When using one type of circuit Board 20 LEDs, which are inverted are oriented relative to each other, can be changed the location of the LEDs 17 different color ranges. When using this configuration, the likelihood of colors is reduced.

[0059] the circuit Board 20 LEDs arranged in their longitudinal direction, and the connecting Board 20 LEDs are connected via the connector 22.

By making cards 20 LEDs having different lengths, that is, which are the different number of LEDs 17, and through their connections with connectors 22, circuit Board 20 LEDs can be used for blocks 12 of the rear lights of different sizes. That is, the circuit Board 20 LEDs exclusively for block 12 and the rear illumination of a certain size are required. This contributes to cost reduction.

[0060] In this embodiment, each connector 22 includes a first connector 22a and the second connector 22b. The first connector 22a is of the termination of the long side of the card 20 LEDs.

Because at least one of the first soy is initely 22a and the second connector 22b protrudes outward from the circuit Board 20 LEDs the first connector 22a and the second connector 22b can be smoothly coupled in the process of connecting adjacent circuit boards 20, 20 LEDs through the first connector 22a and the second connector 22b.

[0061] the Connectors 22 are white.

The connectors 22 have a relatively high reflectivity. Based on the foregoing, the probability that the connectors 22 will absorb light, is reduced, and consequently reduces the probability of occurrence of uneven brightness.

[0062] the Base 14 has a rectangular shape in horizontal projection. Each card 20 LEDs is located in the direction of its long side, which coincides with the longitudinal direction of the base 14.

Compared with the configuration in which each card 20 LEDs is located in its longitudinal direction coinciding with the direction of the short side of the base 14, the number of circuit boards 20 LEDs can be reduced. Based on the foregoing, the number of control units to turn on and off LEDs 17 can be reduced. The result can be a reduced cost.

[0063] as the light sources are LEDs 17. Based on the foregoing, can be provided with light sources with long life and low energy consumption.

[0064] In this embodiment, each of veedid 17 is made by the phosphor, having the maximum light emission in the yellow color range, crystal, emitting blue light, and is used as light source.

When using LEDs 17 white light colors have a tendency to change. The light can be bluish-white, depending on the state of the phosphors (for example, concentration, film thickness).

When using the configuration of this variant implementation, the colors in the entire region are averaged, in addition can be obtained the light almost uniform color.

[0065] the LEDs 17 are sequentially connected via the electrical connection. Because each led 17 is fed an equal amount of current that can be displayed the amount of light emitted from the LEDs 17. Based on the above, the uniformity of brightness in the illuminated surface of the block 12 backlight can be improved.

[0066] the Lens 21 of the lens, configured to scatter light emitted from the respective LEDs 17 are mounted in such a way as to cover the respective LEDs 17. The light scatters through the lens 21 of the lens. Based on the foregoing, even when the distance between adjacent LEDs 17, 17 probability of occurrence bitmap lamps is reduced. By reducing the number of Svetovidov can be reduced cost. Among other things, can be obtained almost uniform brightness distribution. Through the lens 21 of the lens mix colors of light emitted from the LEDs 17, and therefore can be reduced the likelihood of colors. Based on the foregoing, the colors additionally averaged.

[0067] the Lens 21 of the lens are light diffusing elements that are configured for scattering light. Based on the foregoing, the light can be scattered correctly.

[0068] the surface of the lens 21 of the lens-side Board 20 LEDs processed by roughening the surface. Based on the foregoing, the light is scattered even better.

[0069] the Above has described an implementation option, in accordance with the present invention. The present invention is not limited to the above embodiment. For example, in the technical scope of the present invention can be included the following modifications. The following modifications of the elements and components that are similar to elements and components of the above-mentioned variants of implementation, will be denoted by the same reference numbers and will not be explained.

The first modification

[0070] as a modification of the arrangement of the LEDs 17 can be used, the location of the SV is todito 17, shown figure 11. 11 depicts a schematic view illustrating another variant of the arrangement of LEDs of different color ranges on-Board LEDs. Figure 11, when examining boards 20 LEDs in the direction of the X axis (in the direction of the row in the longitudinal direction of the circuit Board 20 LEDs), the first row comprising three Board 20, 20, 20 LEDs, which are electrically and physically connected through connector 22 located above all in the location. The LEDs 17 color ranges a, b, A, B, A and C from left to right in this sequence on each Board, 20 LEDs, shown figure 11. Adjacent LEDs 17, 17, are on Board 20 LEDs are adjacent color bands (A and B, or A and C). Each of the second, third, fourth ... series also includes three Board 20 LEDs connected in series in a direction similar to the direction of the first row. When examining boards 20 LEDs in the Y axis direction (in the direction of the location of the circuit Board 20 LEDs), the LEDs 17 of the color range And are located in the first column, located in the leftmost position location figure 11. The LEDs 17 of the color range are located In the second column. That is, the LEDs 17, 17 that are adjacent in the direction of the location of the circuit Board 20 light the diodes, have the same color range (A and a, b and B, or C).

[0071] With this configuration, the color ranges of the adjacent LEDs 17, 17 do not differ from each other significantly. Based on the above, the likelihood of colors is reduced. Especially in this example, the number of types of circuit boards 20 LEDs can be reduced. This contributes to cost reduction.

The second modification

[0072] as a modification of the arrangement of the LEDs 17 can be used, the location of the LEDs 17, depicted on Fig. Fig depicts a schematic view illustrating another variant of the arrangement of LEDs of different color ranges on the boards of LEDs. On Fig, when examining boards 20d and 20e of the LEDs in the direction of the X axis (in the direction of the row in the longitudinal direction of the Board 20d or 20e LEDs), the first row comprising the first three cards 20d, 20d, 20d LEDs that are electrically and physically connected through connector 22 located above all in the location. The LEDs 17 color ranges A, B, A, A, A and are arranged from left to right in this order on each of the first Board 20d LEDs depicted in Fig. Adjacent LEDs 17, 17, located on the first Board 20d LEDs are the same color range (A and A) is whether the adjacent color bands (A and b or A and C). The second row includes three second card 20e, 20e, 20e LEDs that are electrically and physically connected through connectors 22. The LEDs 17 color ranges B, A, A, A, C, and A from left to right in this order on each of the second Board 20e LEDs depicted in Fig. Adjacent LEDs 17, 17, located on the second Board 20e LEDs are the same color range (A and A) or adjacent color bands (A and B or A and C).

[0073] In this example, the location of the LEDs 17 different color ranges on the first boards 20d LEDs in the first row is different from the location of the LEDs 17 different color ranges on the second boards 20e LEDs in the second row in the direction of arrangement of boards of LEDs (the first circuit Board 20d LEDs and second circuit boards 20e LEDs). When using this configuration, the color ranges of the LEDs 17, 17 that are adjacent in the direction of the location cards 20d, 20e LEDs (in series), do not differ from each other significantly. Based on the above, the likelihood of colors is reduced. The configuration of this example is particularly preferred when the number of LEDs 17 color range corresponding to the desired color, considerably exceeds the amounts of the LEDs 17 color ranges or In C.

The third modification

[0074] as a modification of the arrangement of the LEDs 17 can be used, the location of the LEDs 17, depicted on Fig. Fig depicts a schematic view illustrating another variant of the arrangement of LEDs of different color ranges on the boards of LEDs. On Fig, when examining boards 20f and 20g of LEDs in the X axis direction (in the direction of the row in the longitudinal direction of the Board 20f or 20g LEDs), the first series, which includes three third card 20f, 20f, 20f LEDs that are electrically and physically connected through connector 22 located above all in the location. The LEDs 17 color ranges a, C, A, C, A, and are arranged from left to right in this order on each of the third Board 20f LEDs depicted in Fig. Adjacent LEDs 17, 17 in the third Board 20f LEDs are adjacent color bands (A and C). The second row includes three fourth card 20g, 20g, 20g LEDs that are electrically and physically connected through connectors 22. The LEDs 17 color ranges, a, b, A, B and A from left to right in this order on each of the fourth Board 20g LEDs depicted in Fig. Adjacent LEDs 17, 17, located on the fourth Board 20g LEDs are adjacent color range from the ons (A and B).

When considering the location of the LEDs 17 in the column direction (Y axis direction), the LEDs 17 that are in the first column, which is located in the leftmost position on Fig have color ranges a, b, a, b....... LEDs 17 in the second column are the color ranges C, A, C, A....... These locations of the LEDs 17 are repeated in the other columns. Adjacent LEDs 17, 17 in the third Board 20f LEDs and the fourth Board 20e LEDs, which are arranged parallel to each other, are adjacent color bands (A and B or A and C) in the column direction (Y axis direction).

[0075] With this configuration, the color ranges of the LEDs 17, 17 that are adjacent in the direction of the row or in the direction of the column do not differ significantly. Based on the above, the likelihood of colors is reduced.

The fourth modification

[0076] as a modification of the connection circuit Board 20 LEDs can be used to connect circuit boards 20 LEDs depicted in Fig. Fig depicts schematic views illustrating different ways of connection boards LEDs. On Fig the first row, above all in the location includes three boards 20, 20, 20 LEDs, which are electrically and physically connected group is a rotary connector 22. The second row includes three boards 20, 20, 20 LEDs, which are expanded by 180 degrees from the circuit boards 20, 20, 20 LEDs, located in the first row, and are connected by connectors 22. In this example, the card 20 LEDs, located in the first row, and the Board 20 LEDs, located in the second row are not connected with each other by means of a wire connection, and are electrically isolated from each other. That is, the power to control the LEDs 17 is fed to the leftmost cost 20 LEDs of each row.

[0077] With this configuration, it is possible to independently control the LEDs 17 of each row, for example, the LEDs 17 that are in the first or second row.

The fifth modification

[0078] as a modification of the arrangement of the LEDs 17 can be used, the location of the LEDs 17, depicted on Fig. Fig depicts a schematic view illustrating another variant of the arrangement of the LEDs. On Fig, when examining boards 20h LEDs in the X axis direction (in the direction of the row in the longitudinal direction of the Board 20h LEDs), three fifth card 20h LEDs electrically and physically connected through connectors 22. The LEDs 17 are arranged in two lines in the Y axis direction (in the direction of the short side of the card 20h LEDs) on the fifth boards 20h light the diodes, and consistently communicate via telecommunications. The first line on each of the fifth Board 20h LEDs includes LEDs 17 color ranges A, B, A, B, A and b, which are arranged from left to right in this sequence on Fig. Adjacent LEDs 17, 17, are in the first line of the fifth Board 20h LEDs are adjacent color bands (A and B). The second line on each of the fifth Board 20h LEDs includes LEDs 17 color ranges C, a, C, A, C and A, which are arranged from left to right in this sequence on Fig. Adjacent LEDs 17, 17 in the second line of the fifth Board 20h LEDs are adjacent color bands (A and C).

[0079] When examining boards 20h LEDs in the Y axis direction (in the direction of the column in the direction of the short side of the card 20h LEDs), the adjacent LEDs 17, 17 are connected in parallel by means of electric communication. The LEDs 17 that are in the first column, which is located in the leftmost position in the location, have the color ranges A and C. the LEDs 17 in the second column are color ranges and A. Based on the foregoing, the LEDs 17, 17 that are adjacent in the column direction (Y axis direction), are adjacent color bands (A and B or A and C).

[0080] In this example, the LEDs 17 R is polagaytsya multiple lines (that is, in two lines) in the longitudinal direction of the fifth Board 20h LEDs. Based on the foregoing, the number of circuit boards 20 LEDs (fifth cards 20h LEDs) in relation to the number of LEDs 17 can be reduced. That is, the number of parts can be reduced, and may be increased efficiency.

Other embodiments of the

[0081] have Been described embodiments of, in accordance with the present invention. The present invention is not limited to variants of implementation, which was explained in the above description with reference to the drawings. For example, in the technical scope of the present invention can be included the following options:

[0082] (1) In the above embodiments, the implementation uses three color range. However, the number of color ranges is not limited to three. Can be used two, four or more color ranges.

[0083] (2) In the above embodiments, the implementation of three Board LEDs are arranged in the longitudinal direction of the base (in X-axis direction) and connected. However, the number of boards of LEDs may be one, two, or more than three. Among other things, the number of LEDs on each Board LEDs is not limited to six. On each Board, the LEDs may be positioned on either the number of LEDs.

[0084] (3) In the above embodiments, the implementation of the on Board LEDs the LEDs are located in the same order, in accordance with the color ranges in the longitudinal direction of the base (in the direction of the X axis). However, it can be connected Board LEDs, where the LEDs are arranged in a different order, in accordance with the color ranges.

[0085] (4) In the above embodiments, the implementation uses LEDs white light. However, the color of the light is not limited to white. Can be used LEDs that emit light of any color.

[0086] (5) In the above embodiments, the implementation of LEDs are arranged in a grid. However, the LEDs may be arranged in a honeycomb structure. That is, the LEDs can be arranged with equal intervals or in a stepwise manner.

[0087] (6) In the above embodiments, the implementation of each led is made by coating a phosphor having a maximum light emission in the yellow color range, crystal, emitting blue light to emit white light, and is used as a light source. However, the light source can be constructed from a crystal that emits ultraviolet light having the maximum light emission, is approximately equal to the wavelength of 380 nm, and the phosphor is, which absorbs ultraviolet light and produces fluorescence. Using phosphors having the maximum light emission in the blue, green and red color ranges, respectively, can be obtained in white light. White light that can be played by the lighting device in the above-mentioned configuration, has a smooth spectrum in a wide visible light range and, therefore, has high quality color reproduction. The shade of color may occur due to changes in the distributed amount of the phosphors. However, colors can be aligned by means of the lighting device in the above-mentioned configuration. That is, there can be provided a lighting device having a high quality color reproduction and less tendency to play shades of color.

[0088] (7) In the above embodiments, the implementation of the lenses of the lens are arranged in such a way as to cover the corresponding LEDs. However, the lenses of the lens may not be required. Through the proximity of the LEDs, the probability of occurrence of point images of the lamps is reduced.

[0089] (8) In the above embodiments, the implementation of LEDs are used as point light sources. However, there may be used light sources of other types.

[0090] (9) In wisewoman the mentioned variants of implementation of the set of optical sheets includes a diffuser plate, the diffuser sheet, a lens sheet and a polarizing sheet of the reflective type. However, the set of optical sheets may include two plates of the diffuser, which layers are superimposed on each other.

[0091] (10) In the above embodiments, the implementation uses the white connectors. However, the connectors may be made of materials of different colors, for example, ivory, subject to the availability of the color of high light reflectance.

List of reference numbers

[0092]

10: Liquid crystal display device (display Device)

11: Liquid crystal panel (display panel)

12: the backlight Device (Lighting device)

14: Base

17: LEDs (Point light source, light-emitting diode)

20: Board LEDs (Charge)

21: Lens diffuser

22: Connector

22a: First connector

22b: Second connector

A, B, C: the Color ranges

TV: Television receiver

1. Lighting device containing
many point light sources can be classified into two or more color ranges, in accordance with colors of light, each color range is defined by a square, each side of which has a length equal to 0.01 in the color chart color space International is native Commission on Illumination in 1931, and the basis of placing yourself on the point light sources of different color ranges, oblong card installed on the Foundation and on the Board are point sources of light, point light sources, which are located on the circuit Board adjacent to each other have the same color range or adjacent color bands.

2. The lighting device according to claim 1, in which point light sources are arranged in line in the longitudinal direction of the Board.

3. The lighting device according to any one of claims 1 and 2, in which point light sources are arranged on the Board with equal intervals.

4. The lighting device according to any one of claims 1 and 2, in which point light sources are arranged in multiple lines in the longitudinal direction of the Board.

5. The lighting device according to any one of claims 1 and 2, in which:
fee includes many circuit boards arranged in parallel to each other; and
point light sources located adjacent in the direction of the location cards have the same color range or adjacent color bands.

6. The lighting device according to any one of claims 1 and 2, in which the fee includes many circuit boards arranged in parallel
each other, and
point light sources are arranged so that the location of the point istochnikov on the Board in the first row, in accordance with the colour ranges, different from the location of the point light sources on the Board in the second row, in accordance with the color ranges.

7. The lighting device according to any one of claims 1 and 2, in which the fee includes many circuit boards arranged in parallel to each other, and
cards that are adjacent in the direction of their arrangement, rotated relative to each other by 180° in their longitudinal direction.

8. The lighting device according to any one of claims 1 and 2, in which
fee includes many circuit boards arranged in its longitudinal direction, and
adjacent boards are connected via the connector.

9. The lighting device of claim 8, in which
the connector includes a first connector and a second connector that interlock with each other, and,
at least one of the first connector and the second connector protrudes outward from the terminal of the card relative to the longitudinal direction of the Board.

10. The lighting device of claim 8, in which the connector has the color of ivory or white color.

11. The lighting device according to any one of claims 1, 2, 9 and 10, in which
the base has a rectangular shape in horizontal projection, and
the fee is located in its longitudinal direction coincides with the longitudinal direction of the base.

12. Light up is a recreational device according to any one of claims 1, 2, 9 and 10, in which the point light sources are light emitting diodes.

13. The lighting device according to any one of claims 1, 2, 9 and 10, in which the point light sources are light emitting diodes, comprising crystals that emit blue light, the phosphor having a maximum light emission in the yellow color range, and plotted on the respective crystals that emit blue light, for the emission of white light.

14. The lighting device according to any one of claims 1, 2, 9 and 10, in which the point light sources are light emitting diodes, comprising crystals that emit blue light, the phosphor having the maximum light emission in the green and red color range, respectively, and plotted on the respective crystals that emit blue light, for the emission of white light.

15. The lighting device according to any one of claims 1, 2, 9 and 10, in which the point light sources are light emitting diodes, comprising crystals that emit blue light, the phosphor having a maximum light emission in the green color range, and the crystals that emit red light, and each chip emitting blue light are combined with each crystal that emits red light, for the emission of white light.

16. The lighting device according to any one of claims 1, 2, and 10, in which point light sources are light emitting diodes, each of which includes a crystal that emits blue light, crystal, emitting green light, and the crystal that emits red light, which are combined to emit white light.

17. The lighting device according to any one of claims 1, 2, 9 and 10, in which each point light source includes a crystal that emits ultraviolet light, and the phosphor.

18. The lighting device according to any one of claims 1, 2, 9 and 10, in which the point light sources include crystals that emit ultraviolet light, and the phosphor having a maximum light emission in the blue, green and red color range, respectively.

19. The lighting device according to any one of claims 1, 2, 9 and 10, in which point light sources are sequentially connected via the electrical connection.

20. The lighting device according to any one of claims 1, 2, 9 and 10, optionally containing a lens, diffuser, mounted on card so that it covers the point light sources, and configured to disperse light from the point light sources.

21. The lighting device according to claim 20, in which the lens of the lens is a light-diffusing element configured to disperse the light.

22. The lighting device according to claim 20, in which the torus lens of the lens has a surface, processed by roughening the surface side of the Board.

23. Lighting device containing
many point light sources can be classified into two or more color ranges, in accordance with colors of light, each color range is defined by a square, each side of which has a specified length in the color chart, the color space of the International Commission on Illumination in 1931;
the basis of placing yourself on the point light sources of different color ranges, and
oblong Board, which are arranged parallel to each other and are mounted on the base, and which are point sources of light,
and the card that are adjacent in the direction of their arrangement, rotated 180° relative to each other in their longitudinal direction.

24. A display device, comprising:
the lighting device according to any one of claims 1 to 23 and
a display panel configured to provide display using light from the lighting device.

25. The display device according to paragraph 24, in which the display panel is a liquid crystal display using a liquid crystal.

26. Television receiver containing the display device according to any one of p and 25.



 

Same patents:

FIELD: physics.

SUBSTANCE: method of making a light-emitting device according to the invention comprises the following steps: providing a light-emitting diode (LED) chip on a support (22), with a gap between the LED chip and the support, wherein the LED chip has a bottom surface facing the support and a top surface opposite the bottom surface; forming spacer material (54) on top of the LED chip such that the spacer material seals the LED chip and substantially completely fills the gap between the LED chip and the support, and removing the spacer material (54) at least from the top surface of the LED chip. The LED chip has epitaxial layers (10) that are grown on a growth substrate, wherein the surface of the growth substrate is the top surface of the LED chip. The method further includes a step of removing the growth substrate from the epitaxial layers after forming the spacer material (54) on top of the LED chip. Also disclosed is an intermediate method of making a light-emitting device, a light-emitting device before singulation, a light-emitting device having a flip chip.

EFFECT: using the invention to process on the wafer level multiple LEDs at the same time considerably shortens manufacturing time and enables to use a wide range of materials for the spacer since it allows for a wider range of viscosity.

16 cl, 7 dwg

FIELD: physics.

SUBSTANCE: invention relates to organic light-emitting diode (OLED) solid-state light sources used to make colour information screens and colour display devices with high consumer properties, as well as cheap and efficient light sources. Disclosed is an OLED, having a base in form of a transparent substrate having a transparent anode layer and a metal cathode layer with a light-emitting layer in between, which is based on a dendronised polyaryl silane of general formula (I) or (II) , where n is an integer from 5 to 1000.

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7 cl, 3 dwg, 6 ex

FIELD: physics.

SUBSTANCE: method comprises steps of: providing a substrate having at least one light-emitting diode (LED) and installing a collimator at least partially surrounding said at least one LED on one side, and formed by at least one self-supporting wall element made of material with thickness of 100-500 mcm. Said collimator is connected to said at least one LED and said substrate using a transmitting binding material. Also disclosed is a device made according to the described method.

EFFECT: easy manufacture of the light-emitting device.

10 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: disclosed is a yellow afterglow material having the chemical formula aY2O3·bAl2O3·cSiO2:mCe·nB·xNa·yP, where a. b. c. m, n. x and y are coefficients, where a is not less than 1 but not greater than 2, b not less than 2 but not greater than 3, c is not less than 0.001 but not greater than 1, m is not less than 0.0001 but not greater than 0.6, n is not less than 0.0001 but not greater than 0.5, x is not less than 0.0001 but not greater than 0.2, and y is not less than 0.0001 but not greater than 0.5, wherein Y, Al and Si are basic elements and Ce, B, Na and P are activators. Also disclosed is a method of producing the disclosed material and a light-emitting diode device using said material.

EFFECT: making alternating current light-emitting diodes from luminescent materials.

10 cl, 6 dwg, 4 tbl, 14 ex

FIELD: chemistry.

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EFFECT: invention enables to obtain white light with colour rendering index of more than 80.

48 cl, 14 dwg

FIELD: physics.

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6 cl, 1 tbl, 7 ex

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EFFECT: enabling control of the base current of an optical transistor and, as a result, control the current of its emitter-collector circuit, thereby controlling luminous intensity of the active region of the optical transistor, which enables to create different emission modes of the optical transistor, including stabilisation of emission at a given level.

1 dwg

FIELD: chemistry.

SUBSTANCE: described are novel polycyclic nitrogen-containing heteroaromatic compounds - tetracyano-substituted 1,4,9b-triazaphenalenes of general formula 1

, where R denotes phehyl, substituted with NO2, halogen, C1-4 alky or -OR1 group, where R1 denotes methyl, naphthyl or heteroaryl of the composition C4H3S, and a method for production thereof from corresponding R-substituted 1,1,2,2-tetracyanocyclopropanes while boiling in 1,2-dichlorobenzene.

EFFECT: described compounds can be used as fluorescent indicators for new-generation opto-chemosensors or as material for light-emitting diodes.

2 cl, 12 ex, 37 dwg

FIELD: physics.

SUBSTANCE: method of making a wavelength converting light-emitting device comprising: a light-emitting diode for emitting optical radiation with a first wavelength, having a light-emitting surface on which there is a wavelength converting material adapted to receive optical radiation emitted by said light-emitting diode, and convert at least a portion of said optical radiation to optical radiation with a second wavelength; placing on at least a portion of the external surface of said light-emitting device with the converted wavelength a light-cured coating material, irradiation with optical radiation with said first wavelength with effective intensity of which results in curing of said light-cured coating material; and curing at least a portion of said light-cured coating material by irradiating said material with said light-emitting diode in order to form cured material which blocks optical radiation. Two versions of the wavelength converting light-emitting device are also disclosed. The invention can be used to selectively prevent output of unconverted optical radiation from a device.

EFFECT: wavelength converted light-emitting diode emits substantially only converted optical radiation.

12 cl, 2 dwg

FIELD: physics.

SUBSTANCE: illumination device (10) includes: a light-emitting diode (LED) (20), a radiation emitting LED (21); a transmissive support (50), which contains luminescent material (51), where the luminescent material (51) is arranged to absorb at least part of radiation of LED (21) and emit luminescent material emission (13). The LED (20) and luminescent material (51) are configured to generate light (115) of a predetermined colour; a translucent exit window (60) arranged to transmit at least part of the light (15); a LED cavity (11) and a diffuser cavity (12). The LED cavity (11) has a LED cavity side wall (45) and a LED cavity cross section (211), and the diffuser cavity (12) has a diffuser cavity side wall (41) and a diffuser cavity cross section (212), wherein the transmissive support (50) is downstream of the LED (20) and upstream of the translucent exit window (60); the LED cavity (11) is upstream of the transmissive support (50) and downstream of the LED (20); the diffuser cavity (12) is downstream of the transmissive support (50) and upstream of the translucent exit window (60); the ratio of the diffuser cavity cross section (212) and LED cavity cross section (211) is in the range of 1.01 to 2.

EFFECT: design of an illumination device with a virtually colourless outward appearance in the off state.

12 cl, 1 ex, 1 tbl, 2 dwg

FIELD: electricity.

SUBSTANCE: lighting device includes multiple LED 16, circuit board 17S LED, chassis 14, connection component 60 and reflecting plate 21. LED 16 are installed on circuit board 17S LED. Both plates 17S and 17C LED are attached to chassis 14. Connection component 60 is electrically connects circuit boards 17S and 17C LED between each other. Reflecting plate 21 is put on surface 17A of light sources installation. In the lighting device, connection component 60 is located on surface 17B of attachment of connection component of circuit board 17S LED. Surface 17B of attachment of connection device is opposite to the surface, on which reflecting plate 21 is put.

EFFECT: increasing brightness of reflected light.

23 cl, 22 dwg

FIELD: physics.

SUBSTANCE: device has a holder (11) which attaches a mounting plate (21) to a backlight base (41) while covering at least the edge (21S) of the mounting plate (21) on the backlight base (41), said edge being situated in the direction of the short side of the mounting plate. The surface of the mounting plate covered by the holder has a non-uniform reflection area which can be in form of a connector or a terminal.

EFFECT: improved uniformity of the amount of light from the backlight unit.

21 cl, 39 dwg

FIELD: electricity.

SUBSTANCE: back light unit (49) for display device (69) equipped with LCD panel (59) contains a frame (41), dissipating plate (43) supported by the frame and point light sources supported by mounting substrates (21) provided at the frame. Point light sources contain LEDs (22) installed at mounting substrates. Mounting substrates (21) are interconnected by connectors (25) thus forming rows (26) of mounting substrates (21). Varieties of rows (26) of mounting substrates (21) are located in parallel; a row (26) of mounting substrates (21) is formed by long and short mounting substrates (21) and location of such long and short mounting substrates (21) is changed to the opposite row-by-row. Positions of connectors (25) are not levelled in a straight line in direction of rows (26) of mounting substrates (21).

EFFECT: providing uniform brightness of the dissipating plate.

23 cl, 10 dwg

FIELD: electricity.

SUBSTANCE: backlighting unit (49) for a display device (69) equipped with a liquid crystal display panel (59) comprises a base (41), a diffusing plate (43), supported by means of the base, and point sources of light, supported by means of mounting substrates (21), provided on the base. Point sources of light contain modules of light emission (MJ). Mounting substrates are arranged in the rectangular area (41a) suitable for location of mounting substrates in it and arranged on the base. Gaps at the borders between mounting substrates do not stretch in any direction along long sides and/or in direction along short sides of the rectangular area, in order to provide for the possibility to see the rectangular area from the edge to the edge.

EFFECT: achievement of homogeneity of reflection ratio.

16 cl

FIELD: physics.

SUBSTANCE: liquid crystal display device includes a first polariser, a second polariser facing the first polariser, a liquid crystal display panel provided between the first polariser and the second polariser, and a first phase plate and a second phase plate provided between the first or second polariser and the liquid crystal display panel. The display panel has a pair of substrates and a liquid crystal layer placed between the pair of substrates, which includes homogeneously aligned liquid crystal molecules. The phase plate includes a liquid crystal film placed in a position where the nematic liquid crystal is hybrid-aligned. Phase difference in the perpendicular direction of the element situated between the first and second polarisers, excluding the liquid crystal layer and the first phase plate, is 120 nm or greater.

EFFECT: reduced inversion of the gray gradation scale in a position where a colour close to black is displayed.

19 cl, 116 dwg

FIELD: physics.

SUBSTANCE: method of modulating optical radiation involves transmitting natural visible light in the wavelength range 350-850 nm at an angle of 5-75°, between the direction of the light and the perpendicular to the surface of the working optical element made from n layers of manganite A1-xBxMnO3 (where n≥1), wherein the trivalent rare-earth metal A is partially substituted with a univalent or divalent metal B with degree of substitution x. Visible light transmitted through and reflected from the working element is modulated under the effect of a control external magnetic field in which is located the working optical element, having giant visible light magnetotransmission and magnetoreflection effect.

EFFECT: wider range of methods of modulating optical radiation, simple design.

2 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: lighting device 12 includes light source 17, housing 14 containing light source 17 and hole 14b for passing of light emitted by light source 17 and optical element 15a provided so that to be directed to light source 17 and close hole 14b. Optical element 15a has various coefficient of reflection lengthwise to light source 17.

EFFECT: achievement of nearly even distribution of lighting brightness without partially formed dark parts.

12 cl, 27 dwg

FIELD: electricity.

SUBSTANCE: rear light unit (49) of display device (69) with liquid-crystal display panel (59) is provided with housing (41), diffusing plate (43) supported by housing, and light source located on housing (41) and emitting light on diffusing plate, and reflective sheet (42) for light reflection in diffusing plate direction. In peripheral part of reflective sheet (42) there formed is sloping surface (42a) reflecting light emitted sideward from the light source in direction of diffusing plate (43). This sloping surface (42a) of reflective sheet (42) is subject to treatment reducing reflection, which is achieved applying to sloping surface (42a) print with higher optical absorption constant, than it is of sloping surface (42a).

EFFECT: providing uniform brightness.

9 cl, 15 dwg

FIELD: electricity.

SUBSTANCE: light-source unit includes a light-emitting diode 17 serving as a light source, diffuser lens 19, reflective sheet 23 of the board and a limiter 27. The diffuser lens 19 is faced towards emitting surface 17a of light emitted by the light-emitting diode 17. The reflective sheet 23 of the board is placed so that it is faced towards surface of the diffuser lens 19 which is located closer to the light-emitting diode 17 and configured for the purpose of light reflection. The limiter 27 protrudes from the diffuser lens 19 in direction of reflective sheet 23 of the board and it limits mutual alignment between the diffuser lens 19 and reflective sheet 23 of the board.

EFFECT: removing irregularity of the light emitted from the diffuser lens.

32 cl, 29 dwg

FIELD: electricity.

SUBSTANCE: illumination device 12 contains a great number of point sources 80 of light, base 14 comprising point sources 80 of light and window 14b through which light passes from point sources 80, optical element 15 (15a) faced towards point sources 80 of light and capable to cover the window 14b. Point sources 80 of light are located so that they ensure LH zone with high density of light sources in which the interval of the above sources is relatively small and LL zone with low density of light sources in which the interval of the above sources is relatively big. Reflective sections 50 which reflect light emitted by point sources 80 are formed at least in the area brought in coincidence with LL zone with low density of light sources in the optical element 15 (15a).

EFFECT: reducing costs and energy consumption and increasing brightness of illuminated surface.

19 cl, 12 dwg

FIELD: physics.

SUBSTANCE: invention relates to organic light-emitting diode (OLED) solid-state light sources used to make colour information screens and colour display devices with high consumer properties, as well as cheap and efficient light sources. Disclosed is an OLED, having a base in form of a transparent substrate having a transparent anode layer and a metal cathode layer with a light-emitting layer in between, which is based on a dendronised polyaryl silane of general formula (I) or (II) , where n is an integer from 5 to 1000.

EFFECT: wide range of OLEDs with high operational characteristics, particularly in the radiation range of 400-700 nm, which enables use thereof as light sources.

7 cl, 3 dwg, 6 ex

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