Liquid crystal display device

FIELD: physics.

SUBSTANCE: liquid crystal display device (100) of the present invention includes a liquid crystal display panel (10) and a lateral illumination unit (20) which emits light from a position which is lateral with respect to the panel (10). The panel (10) includes a front substrate (1), a back substrate (2) and a light-diffusing liquid crystal layer (3). The unit (20) includes a light source (7), which is situated in a position which is lateral with respect to the panel (10), and a light-guide (6), having a light-output surface (6b) through which light emitted by the light source (7) as well as light incident on the light-guide (6) is emitted towards the end surface (1a) of the substrate (1). The surface (6b) is slanted relative a direction which is vertical with respect to the front surface (1b) of the substrate (1), such that it faces the back surface of the panel (10).

EFFECT: preventing generation of a bright line in the panel.

3 cl, 6 dwg

 

The technical field to which the invention relates.

The present invention relates to a liquid crystal display device of the reflective type, includes side illumination.

Prior art

The liquid crystal display device applies not only to the big screen, but also in the display device with a small screen such as a display device of a mobile phone. Examples of such liquid crystal display device with a small screen includes a liquid crystal display device of the reflective type, containing a liquid-crystal display panel of the reflective type.

The liquid crystal display device of the reflective type displays the image through the use of reflected light. Therefore, in order to display screen liquid crystal display device of the reflective type was visible in a dark place, in which the liquid crystal display device of the reflective type may not receive external light, it is necessary that the liquid crystal display device of the reflective type includes a light source used for emitting light to the liquid crystal display panel. Traditional was considered to be structural is Hema, in which block frontal illumination, consisting of a light source and a light guide is provided on the liquid crystal display panel the liquid crystal display device.

Meanwhile, in recent years it was required to reduce the thickness of the liquid crystal display device. For example, we developed a mobile device (such as a mobile phone), which had a slim body. In connection with the development of such mobile devices, liquid crystal display device, which is equipped with a mobile device, necessarily had to have a slim body.

Therefore, to reduce the thickness of the liquid crystal display device of the reflective type has been proposed a liquid crystal display device with a side backlight (edge light), the light source which is provided in a position that is lateral with respect to the liquid crystal display panel (for example, see patent literature 1 and 2). This liquid crystal display device with lateral illumination has a structure in which (i) the liquid crystal layer of the liquid crystal display panel is fixed by a pair of substrates so that he was between the couple of substrates, (ii) each of the pair of substrates are the two which is a transparent substrate, and (iii) the light source is provided in a position that is lateral with respect to the liquid crystal display panel. When using such a framework, the liquid crystal display device may have a smaller thickness compared to traditional structural scheme ensures that the block frontal illumination.

In the following description briefly describes the liquid crystal display device disclosed in patent literature 1, as well as another liquid crystal display device disclosed in patent literature 2.

Figure 4 depicts a view schematically illustrating the liquid crystal device 300 of the display disclosed in patent literature 1. The liquid crystal device 300 of the display includes a liquid crystal display panel 310 and 320 of the side of the backlight provided in a position that is lateral with respect to the liquid crystal display panel 310. Light emitted from a fluorescent tube 321 320 side illumination falls on the glass substrate 311 of the liquid crystal display panel 310. The liquid crystal device 300 of the display displays an image by using light (backlight).

In addition, the liquid crystal display panel 310 fluid is crystal device 300 of the display includes a light-diffusing liquid crystal layer 313. Light-diffusing liquid crystal layer 313 has a parameter, which, regardless of whether the light-diffusing liquid crystal layer 313 in the state of light transmission or the state of light scattering, optical can be controlled by adjusting the voltage supplied to the light-scattering liquid-crystal layer 313. Using liquid crystal display devices 300 having such a structure, it is possible to improve the utilization ratio of the backlight without the use of a polarizer.

Figure 5 depicts a view schematically illustrating the liquid crystal device 400 display, disclosed in patent literature 2.

The liquid crystal device 400 display includes a liquid crystal display panel 410 and block 420 the side of the backlight provided in a position that is lateral with respect to the liquid crystal display panel 410. Block 420 the side of the backlight includes a light guide 421 and fluorescent tube 422. Light emitted from a fluorescent tube 422 passes through the light guide 411 so that he fell on a glass substrate 411 of the liquid crystal display panel 410.

The light that falls on the glass substrate 411 of the liquid crystal display panel 410, (i) passes through the liquid is ristalliceski layer 413, (ii) is subjected to diffuse reflection electrode 414 diffuse reflection, and then (iii) again passes through the liquid crystal layer 413. In the liquid crystal layer 413 light is modulated so that the light that has a polarization component passed through the polarizer 415. Thus the liquid crystal device 400 of the display 400 displays the image.

List patent literature

Patent literature 1

Publication of the patent application of Japan Tokukaihei No. 10-A (publication date: July 14, 1998)

Patent literature 2

The publication of the application in the Japan patent Tokukai No. 2001-166296A (publication date: June 22, 2001)

The invention

Technical problem

The liquid crystal display device of the reflective type, using side illumination, disclosed in patent literature 1, and a liquid crystal display device of the reflective type, using side illumination, disclosed in patent literature 2, have different structural schemes. Among them there is a structural diagram that uses light-diffusing liquid crystal disclosed in patent literature 1, which is the most preferable as a liquid crystal display device that can display an image with high ratios is ntom contrast without the use of a polarizer.

However, the inventors of the present invention have paid attention to the fact that the liquid crystal display device of the reflective type, which includes a side illumination and uses light-diffusing liquid crystal has a problem in display quality when the liquid crystal display device of the reflective type has thin little body.

That is, the liquid crystal display panel using a light-diffusing liquid crystal, does not use a polarizer. So is the case when a part of light emitted from the light source does not reach the liquid crystal layer, and is emitted through the glass substrate directly to the outside. In particular, when the liquid crystal display device has a thin glass substrate liquid crystal display device has a small thickness. In this case, most part of light emitted from a light source is emitted through the glass substrate directly to the outside. Light emitted directly to the outside, appears as a bright line(s) liquid crystal display panel. This reduces the display quality of the liquid crystal display panel.

Generating such a bright line(s) liquid crystal display panel can the be prevented by way in which (i) the end portion of the glass substrate is made large, and (ii) sunlight-blocking element is provided on the end part. However, this method generates an unnecessary gap in the liquid crystal display device. This creates an unfavorable condition, resulting in reduction of thickness and size of the liquid crystal display device.

The present invention based on these problems. The purpose of the present invention is to provide a light-diffusing liquid crystal display device which (i) has a high quality display and (ii) may have a reduced thickness and size.

Solution

To achieve the objective liquid crystal display device of the present invention, which has a reflective type, includes: a liquid crystal display panel and the block side of the backlight, which is used for light emission in the direction of the liquid crystal display panel from a position that is lateral with respect to the liquid crystal display panel; a liquid crystal display panel includes: a front substrate, a rear substrate provided so that she was facing the front substrate, and a light-diffusing liquid crystal layer fixed through before the she and the rear substrate so so it was between the front and rear substrates; block side of the backlight includes: a light source provided in a position that is lateral with respect to the liquid crystal display panel, and a light guide provided between the liquid crystal display panel and a light source; a light guide has a light guiding surface, through which light entering the light pipe from the light source is emitted in the direction of the end surface of the front substrate; at least part of the light guiding surface, which faces the end surface of the front substrate tilted relative to the direction that is vertical with respect to the front surface of the liquid crystal display panel thus, to be turned to the back surface of the liquid crystal display panel.

When using such a framework, the light emitted from a light source falls on the front substrate through the optical fiber and disperses in the liquid crystal layer or passes through the liquid crystal layer. Thus the liquid crystal display device displays the image.

In this case, the light guide is such that at least part of the light guiding surface of the light guide which faces the end surface of the front substrate, tilted relative to the direction that is vertical to the front surface of the liquid crystal display panel, thereby to be converted to the side of the rear surface of the liquid crystal display panel. When using such a framework, light emitted from the light guiding surface of the light guide, which is tilted accordingly, is refracted toward the back surface of the liquid crystal display panel, and then gets on the end surface of the front substrate.

Accordingly, when using such a framework, it is possible (i) to reduce the amount of light which reaches the liquid crystal layer, and is emitted from the front substrate directly to the outside, and on the basis of the foregoing, (ii) to improve the display quality of the liquid crystal display panel. In addition, since the display quality can be improved without the use of sunlight-blocking element or the like, has the possibility of providing a light-diffusing liquid crystal display device, the thickness and size can be reduced.

Additional objectives, features and strengths of the present invention will become apparent after reading the following description. In addition to t the th, the advantages of the present invention will become apparent after reading the following explanations, which are presented together with reference to the drawings.

Advantageous effects of invention

The liquid crystal display device of the present invention, which has a reflective type, includes: a liquid crystal display panel and the block side of the backlight, which is used for light emission in the direction of the liquid crystal display panel from a position that is lateral with respect to the liquid crystal display panel; a liquid crystal display panel includes: a front substrate, a rear substrate provided so that she was facing the front substrate, and a light-diffusing liquid crystal layer is fixed by the front and rear substrates so that he was between the front and rear substrates; block side of the backlight includes: a light source provided in a position that is lateral with respect to the liquid crystal display panel, and a light guide provided between the liquid crystal display panel and a light source; a light guide has a light guiding surface, through which light entering the light pipe from the light source is emitted towards the attachment end surface of the front substrate; at least part of the light guiding surface, which faces the end surface of the front substrate tilted relative to the direction that is vertical with respect to the front surface of the liquid crystal display panel, thereby to be converted to the side of the rear surface of the liquid crystal display panel. Accordingly, it is possible to provide a light-diffusing liquid crystal display device which (i) has a high display quality, and (ii) may have a reduced thickness and size.

Brief description of drawings

Figure 1(a) depicts a top view illustrating a structural diagram of the liquid crystal display device, in accordance with the embodiment of the present invention.

Figure 1(b) depicts a view in cross section illustrating the structural diagram of the liquid crystal display device, in accordance with the embodiment of the present invention.

Figure 2 depicts a view in cross section schematically illustrating a variant of the passing light emitted from a fiber, a liquid crystal display device.

Figure 3 depicts a view in cross section schematically illustrating a variant of the passing light emitted from a fiber, zhidkokristallicheskie the m display device of the comparative example.

Figure 4 depicts a view schematically illustrating the conventional liquid crystal display device.

Figure 5 depicts a view schematically illustrating another conventional liquid crystal display device.

Description of embodiments

Next, with reference to the drawings, will be described one way of implementing the liquid crystal display device of the present invention. However, it should be noted that the present invention is not limited to the following embodiment.

Structural diagram of the liquid crystal display device 100

In the following description, with reference to Figure 1(a) and 1(b), describes the schematic structure of the liquid crystal display device 100. Figure 1(a) depicts a top view schematically illustrating the liquid crystal device 100 display this option implementation. Figure 1(b) depicts a view in cross section illustrating the liquid crystal device 100 display this option implementation.

The liquid crystal device 100 of the display is a liquid crystal display device of the reflective type, which includes the liquid crystal display panel 10 and the block side of the backlight provided in positions, which are the two which is the side toward the liquid crystal display panel 10.

First of all, the liquid crystal display panel 10 includes (i) the front substrate 1, (ii) the rear substrate 2, which is provided so as to be facing the front substrate, (iii) a liquid crystal layer provided between the front substrate 1 and rear substrate 2, and (iv) the reflective layer 4.

The front substrate 1 and rear substrate 2 have a rectangular solid shape, and are made of a transparent material such as glass and polymer film. The front substrate 1 is provided on the side of the viewer, and the rear substrate 2 is provided on the side which is opposite to the side of the viewer. The front substrate 1 has a thickness equal to, for example, of 0.2 mm Rear substrate 2 has a thickness equal to, for example, of 0.3 mm

In addition, as necessary, provided the electrode line (conductive path), an insulating layer and/or the semiconductor layer (each of which is illustrated), as (i) on the surface of the front substrate 1 that faces the liquid crystal layer 3, and (ii) on the surface of the rear substrate 2 that faces the liquid crystal layer 3. For example, the front substrate 1 is part of the substrate with an active matrix, and the rear substrate 2 is part of the counter substrate.

The liquid crystal layer 3 is provided, and ger is etechno is poured into the space between the front substrate 1 and rear substrate 2, and the outer peripheral part of the liquid crystal layer 3 is filled with the adhesive 5. In this case, the liquid crystal layer 3 is a light-diffusing liquid crystal layer, a condition which can switch between light transmission and light scattering. Switching between these States can be performed by an external pulse, such as supply voltage.

The reflective layer 4 is a layer that serves to specular reflection of the incident light. The reflective layer 4 is provided between the lower substrate 2 and the liquid crystal layer 3. The reflective layer is made, for example, from metal. The position of the reflective layer 4 is not limited to the position which is illustrated in figure 1, since the reflective layer 4 is provided closer to the lower substrate 2, compared with the liquid crystal layer 3.

In addition, the unit 20 side of the backlight includes a light source 7 and the light guide 6. It should be noted that the light source 7 and the optical fiber 6 can be attached to the liquid crystal display panel 10 with a frame (not illustrated).

Source 7 light is provided in a position that is lateral with respect to the liquid crystal display panel 10. Source 7 light emits light in the direction of the end surface 1a p the Central substrate 1. In accordance with this embodiment, as the source 7 light uses light emitting diode (LED). LED diode has a thickness equal to, for example, of 0.4 mm

In figure 1, as an example, provided two sources 7 light. However, it should be noted that the number of sources 7 light in particular is not limited. In addition, the light source 7 is not limited to the LED, and may be, for example, a fluorescent tube.

The light guide 6 is provided between the liquid crystal display panel 10 and the source 7 of the light. The light guide 6 guides the light emitted from a source 7 of the light to the end surface 1A of the front substrate 1. The optical fiber 6 has the shape of a thin plate and may be formed, for example, by injection molding of polycarbonate. In addition, although a detailed description of the light guide 6 will be presented later, the optical fiber 6 has a light guiding surface 6b, which is inclined in the direction of the side that faces the end surface 1a of the front substrate 1.

Preferably, the light emitted from a source 7 of the light, had a directionality factor to some extent. However, the actual light emitted from a source 7 of the light has a component that runs in a direction slightly different from the direction of passage, pointing peak arcosteel in the description of the direction of the passage, indicates the peak brightness of light emitted from a source 7 of the light, will be called "peak direction." In accordance with the present embodiment, the light guide 6 and the front substrate 1 are provided in the peak direction of light emitted from a source 7 of the light.

In the liquid crystal device 100, the display having such a structure, light emitted from a source 7 of the light that falls on the end surface 1a of the front substrate 1 through the light guide 6. The light falling on the end surface 1A, passes through the front substrate 1 in such a way as to achieve a liquid crystal layer 3. In this case, in which the liquid crystal layer 3 is fed to the low voltage, the screen displays a white image so that the light dissipated in the liquid crystal layer 3. On the other hand, when the liquid crystal layer 3 is fed a predetermined voltage, the screen displays a black image so that the light does not disperse in the liquid crystal layer 3, and was subjected to a specular reflection on the liquid crystal layer 3.

The liquid crystal device 100, the display includes such a light-diffusing liquid crystal layer 3. When using such a structural diagram of the LCD device 100 from the images can without using the polarizer to have sufficient brightness even in the case if the power of light emitted from the block side of the backlight is relatively low. Based on the above, it is possible to achieve reduction of power consumption. In addition, since the liquid crystal device 100, the display uses side illumination, it is possible to easily reduce the thickness of the liquid crystal display device 100.

It should be noted that to reduce the amount of light which reaches the liquid crystal layer 3, and passes directly to the viewer (which is called light leakage), sunlight-blocking element may be provided, for example, at the top end of the front substrate 1 and/or the front surface of the light guide 6.

The structural diagram of the optical fiber 6

In the following description describes in detail the structural diagram of the light guide 6.

As illustrated in figure 1(b), the optical fiber 6 has svetoprinimayuschego surface 6a, which faces the radiation source 7 light, and light guiding surface 6b (tilted surface), which faces the end surface 1A of the front substrate 1. It should be noted that the end surface of the front substrate 1, which is turned into the light guide 6, is called the "front surface 1A and the surface of the front substrate 1 (the liquid crystal display panel 10), which is turned towards the spectator, called "p the Central surface 1b.

Light emitted from a source 7 of the light that falls on svetoprinimayuschego surface 6a of the light guide 6 and is held to the light guide 6. Light passing on the optical fiber 6, reaches the light guiding surface 6b and is emitted from the light guiding surface 6b in the direction of the end surface 1A of the front substrate 1.

In this case, the direction that (i) is vertical with respect to the front surface 1b of the front substrate 1 and (ii) facing the rear surface (side opposite the side of the viewer) liquid crystal display panel 10 from the front surface (the audience) liquid crystal display panel 10, is called "direction". In accordance with this embodiment, the end surface 1A is parallel to the direction A.

In particular, svetoprinimayuschego surface 6a of the optical fiber 6 is not limited, as svetoprinimayuschego surface 6a is parallel to the direction A. however, the light guiding surface 6b of the light guide 6 leans against the end surface 1b (direction A) of the front substrate 1 in such a way as to be facing toward the rear surface (side opposite the side of the viewer). In other words, the light guiding surface 6b leans against the end surface 1b of the front the substrate 1 thus, to be farther from the end surface 1b, since the light guiding surface 6b passes in the direction of A.

Option of passing light emitted from the optical fiber 6 having such a structure is explained below by means of a comparative example with reference to Figure 2 and 3. Figure 2 depicts a view in cross section schematically illustrating a variant of the passage of light emitted from the light guide 6, in the liquid crystal device 100 of the display. Figure 3 depicts a view in cross section schematically illustrating a variant of the passing light emitted from a fiber, a liquid crystal display device of comparative example.

It should be noted that the liquid crystal display device of the comparative example includes a liquid crystal display panel 210 and the block side of the backlight (not illustrated except for the fiber 206). Like the liquid crystal device 100 of the display of this variant implementation, the liquid crystal display panel 210 includes a front substrate 201, the rear substrate 202, the liquid crystal layer 203, the reflective layer 204 and the adhesive 205. Meanwhile, the light guide 206 block side illumination has a shape that differs from the shape of the light guide 6 of this variant implementation. In particular, the optical fiber 206 is different the t of the light guide 6 topics, what light guiding surface 206b of the optical fiber 206 is parallel to the end surface 201a of the front substrate 201.

As described above, light emitted from the light source, in General, contains a component that runs in a direction different from the peak areas. Figure 2 shows the direction in which light is emitted from the Central part (in the direction of the thickness of the light guiding surface 6b of the light guide 6. Figure 3 shows the direction in which light is emitted from the Central part (in the direction of the thickness of the light guiding surface 206b of the optical fiber 206.

In accordance with the comparative example, the light that is emitted from the light guide 206 extends in a radial pattern, the center of which is a direction that is parallel to the front surface 201 b of the front substrate 201 (see figure 3). In this case, the liquid crystal display panel 210 does not contain polarizer, like the liquid crystal display panel 10. Therefore, part of light emitted from the optical fiber 206 to the side of the front surface 201b, is emitted from the front surface 201b directly to the outside. Due to the fact that the light is emitted directly to the outside, in the liquid crystal display panel 210 is generated bright line(s). This reduces the quality of the display is the supply of the liquid crystal display panel 210.

On the other hand, the light guiding surface 6b of the light guide 6 of this variant implementation tilted at a certain angle relative to the end surface 1A so as to be facing toward the back surface (see Figure 2). Therefore, the light that passes into the optical fiber 6, is refracted in the light guiding surface 6b, and then is emitted in the direction of the rear surface with greater force, in comparison with the light of the comparative example, shown in figure 3. This prevents the emission of light through the front surface 1b of the front substrate 1 directly to the outside. Based on the above, it is possible to improve the display quality of the liquid crystal display panel 10.

The angle at which the light guiding surface 6b leans against the end surface 1A may be determined appropriately taking into account the structural scheme of the liquid crystal display device 100, the refractive index of the light guide 6, etc. for Example, in accordance with the present embodiment, it is preferable that the angle at which the light guiding surface 6b leans against the end surface 1A of the front substrate 1 was in the range of from 20° to 30°.

Figure 1 is a front substrate 1 has a thickness that is essentially identical to the thickness of the SV is the guide 6 and the source 7 of the light. However, it should be noted that the front substrate 1 may have a thickness which is less than the thickness of the light guide 6 and the source 7 of the light. For example, when the front substrate 1 has a thickness which is less than the thickness of the source 7 of the light, it is preferable that the light guide 6 had a greater thickness on the side svetoprinimayuschego surface 6a, a relatively thick on the side of the light guiding surface 6b, taking into account the utilization of light emitted from a light source.

In addition, do not necessarily have to be tilted all light guiding surface 6b of the light guide 6. That is, you can also achieve the effects of the present invention through the use of a structural schema in which at least part of the light guiding surface 6b of the light guide 6, which faces the end surface 1A of the front substrate 1 of the liquid crystal display panel 10, stoops as described above.

In accordance with the above-described liquid crystal device 100 of the display, you can improve the display quality of the liquid crystal display panel 10 without securing - element or similar. Based on the above, it is possible to provide a liquid crystal display device, the thickness and size can be reduced accordingly.

Now is sabreena is not limited to the aforementioned embodiments, and can be changed by a specialist in the framework of the claims. An implementation option, based on a proper combination of technical means disclosed in different embodiments of implementation covered by the technical scope of the present invention. That is, embodiments of, and specific examples of the embodiments discussed in the foregoing detailed explanation serve solely to illustrate the technical details of the present invention, which should not be narrowly interpreted within the framework of these embodiments and specific examples, and can be implemented in many variations within the entity of the present invention, if such variations are within the scope of the claimed invention formula, which is presented below.

The conclusion of this invention

As described above, the liquid crystal display device of the present invention, which has a reflective type, includes: a liquid crystal display panel and the block side of the backlight, which is used for light emission in the direction of the liquid crystal display panel from a position that is lateral with respect to the liquid crystal display panel; a liquid crystal display panel includes: a front substrate, a rear substrate, both pecival thus, so it was facing the front substrate, and a light-diffusing liquid crystal layer is fixed by the front and rear substrates so that he was between the front and rear substrates; block side of the backlight includes: a light source provided in a position that is lateral with respect to the liquid crystal display panel, and a light guide provided between the liquid crystal display panel and a light source; a light guide has a light guiding surface, through which light entering the light pipe from the light source is emitted in the direction of the end surface of the front substrate; at least part of the light guiding surface, which facing the end surface of the front substrate tilted relative to the direction that is vertical with respect to the front surface of the liquid crystal display panel, thereby to be converted to the side of the rear surface of the liquid crystal display panel.

When using such a framework, the light emitted from a light source falls on the front substrate of liquid crystal display panel through the light guide and is scattered in the liquid crystal layer or passes through the liquid crystal layer. Thus the m liquid crystal display device displays the image.

In this case, the light guide is such that at least part of the light guiding surface, which faces the end surface of the front substrate tilted relative to the direction that is vertical to the front surface of the liquid crystal display panel, thereby to be converted to the side of the rear surface of the liquid crystal display panel. To do this, the light emitted from the light guiding surface of the light guide, which is tilted accordingly, is refracted toward the back surface of the liquid crystal display panel, and then gets on the end surface of the front substrate.

Accordingly, when using the above-mentioned structural schema, can (i) reduce the amount of light which reaches the liquid crystal layer, and is emitted through the front substrate directly to the outside, and on the basis of the foregoing, (ii) to improve the display quality of the liquid crystal display panel. In addition, since the display quality can be improved without the use of sunlight-blocking element or the like, has the possibility of providing a light-diffusing liquid crystal display device, the thickness and size can be reduced.

In addition, before occhialino, to the liquid crystal display device of the present invention was carried out so that all light guiding surface is bent relative to the direction that is vertical with respect to the front substrate, so that she was facing the back surface of the liquid crystal display panel.

When using such a framework it is possible to easily manufacture the optical fiber by performing injection molding or the like.

Moreover, it is preferable that the liquid crystal display device of the present invention was carried out so that the light source was a light-emitting diode.

Light-emitting diode has a relatively wide directivity and small thickness. Accordingly, when using such a framework can provide a more suitable light-diffusing liquid crystal display device which (i) has a high quality display and (ii) may have a reduced thickness and size.

Industrial applicability

The present invention is widely applicable as a liquid crystal display device, which can have a reduced thickness and size.

List of reference numbers

1: a Front substrate

1A: the face on Ernest

1b: the Front surface

2: Rear substrate

3: liquid crystal layer

4: Reflective layer

6: Fiber

6a: Svetoprinimayuschego surface

6b: light guiding surface

7: light Source

10: LCD display panel

20: Block side lights

100: Liquid crystal display device

1. The liquid crystal display device, which has a reflective type, containing:
the liquid crystal panel; and
the block side of the backlight, which is used for emitting light toward the liquid crystal panel from a position that is lateral with respect to the liquid crystal panel,
the liquid crystal panel includes: a front substrate;
the rear substrate provided so that she was facing the front substrate; and
light-diffusing liquid crystal layer is fixed by the front and rear substrates so that he was between the front and rear substrates, the block side of the backlight includes:
a light source provided in a position that is lateral with respect to the liquid crystal panel; and
a light guide provided between the liquid crystal display panel and the light source, the light guide has a light guiding surface through which that light, falling on the light guide from the light source is emitted in the direction of the end surface of the front substrate,
at least part of the light guiding surface, which faces the end surface of the front substrate is inclined relative to the direction that is vertical to the front surface of the liquid crystal panel, so that she was facing the back surface of the liquid crystal panel.

2. The liquid crystal display device according to claim 1, in which:
all light guiding surface inclined relative to the direction that is vertical with respect to the front substrate, so that she was facing the back surface of the liquid crystal panel.

3. The liquid crystal display device according to claim 1 or 2, in which the light source is a light emitting diode.



 

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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: mechanical engineering.

SUBSTANCE: device has signal form generator, power amplifier and electromechanical block, including first fixed magnetic system and first coil of current-conductive wire, additionally included are integrator and corrector of amplitude-frequency characteristic of electromechanical block, and block also has second fixed magnetic system and second coil of current-conducting wire, rigidly and coaxially connected to first coil. Connection of first and second coils with fixed base is made in form of soft suspension with possible movement of first and second coils, forming a moving part of modulator, relatively to fixed magnetic systems, while output of said signal shape generator is connected to direct input of integrator, inverse input of which is connected to speed sensor of moving portion of modulator, output of integrator is connected to input of corrector, to output of which input of said power amplifier is connected.

EFFECT: higher precision.

3 cl, 8 dwg

FIELD: conversion of optical radiation by using nanotechnology.

SUBSTANCE: transparent nano-particles having volume of 10-15 cm3 are illuminated by white light. Nano-particles are activated by impurity atom with concentration of 1020-1021cm-3 and are strengthened in form of monolayer onto transparent substrate. Nano-particles are made of glass and are glued to substrate by means of optically transparent glue. Substrate can be made flexible.

EFFECT: high brightness of image.

4 cl, 1 dwg

FIELD: optical instrument engineering.

SUBSTANCE: modulator has non-monochromatic radiation source, polarizer, first crystal, first analyzer, and second crystal, second analyzer which units are connected together in series by optical coupling. Modulator also has control electric field generator connected with second crystal. Optical axes of first and second crystals are perpendicular to direction of radiation and are parallel to each other. Axes of transmission of polarizer and analyzers are parallel to each other and are disposed at angle of 45o to optical axes of crystals.

EFFECT: widened spectral range.

3 dwg

FIELD: engineering of displays.

SUBSTANCE: to decrease number of external outputs of screen in liquid-crystalline display, containing two dielectric plates with transparent current-guiding electrodes applied on them, each electrode of one plate is connected to selected electrode of another plate by electric-conductive contact, while each pair of electrodes is let out onto controlling contact zone, and electrodes, forming image elements of information field of screen, on each plate are positioned at angle φ similar relatively to external sides of plates, while angle φ satisfies following condition: 10°≤φ≤85°.

EFFECT: decreased constructive requirements for display.

4 cl, 4 dwg, 1 tbl

FIELD: optical engineering.

SUBSTANCE: device has optically connected single-frequency continuous effect laser, photometric wedge, electro-optical polarization light modulator, first inclined semi-transparent reflector, second inclined semi-transparent reflector and heterodyne photo-receiving device, and also second inclined reflector in optical branch of heterodyne channel, high-frequency generator, connected electrically to electro-optical polarization modulator, direct current source, connected to electrodes of two-electrode vessel with anisotropic substance, and spectrum analyzer, connected to output of heterodyne photo-receiving device.

EFFECT: possible detection of "red shift" resonance effect of electromagnetic waves in anisotropic environments.

1 dwg

FIELD: electro-optical engineering.

SUBSTANCE: fiber-optic sensor system can be used in physical value fiber-optic converters providing interference reading out of measured signal. Fiber-optic sensor system has optical radiation laser detector, interferometer sensor, fiber-optic splitter, photodetector and electric signal amplifier. Interferometer sensor is equipped with sensitive membrane. Fiber-optic splitter is made of single-mode optical fibers. Connection between fiber-optic splitter and interferometer sensor is based upon the following calculation: l=0,125λn±0,075λ, where l is distance from edge of optical fiber of second input of fiber-optic splitter to light-reflecting surface of sensor's membrane (mcm); λ is optical radiation wavelength, mcm; n is odd number within [1001-3001] interval.

EFFECT: simplified design; compactness; widened sensitivity frequency range.

4 cl, 1 tbl, 3 dwg

FIELD: electro-optics.

SUBSTANCE: method can be used in optical filter constructions intended for processing of optical radiation under conditions of slow or single-time changes in processed signal, which changes are caused by non-controlled influence of environment. Optical signal is applied to entrance face of photo-refractive crystal where phase diffraction grating is formed by means of use of photo-refractive effect. Reflecting-type phase diffraction grating is formed. For the purpose the optical signal with duration to exceed characteristic time of phase diffraction grating formation, is applied close to normal line through entrance face of photo-refractive crystal of (100) or (111) cut onto its output face which is formed at angle of 10°to entrance face. Part of entrance signal, reflected by phase diffraction grating, is used as output signal. To apply optical signal to entrance face of photo-refractive crystal, it has to be transformed into quazi-flat wave which wave is later linearly polarized.

EFFECT: power independence of processing of optical signal.

2 cl, 2 dwg

FIELD: measuring equipment.

SUBSTANCE: optical heat transformer includes base of body with optical unit positioned therein, transformer of heat flow and consumer of heat flow in form of thermal carrier. Optical unit consists of optical heat source and reflectors of coherent heat flows and concentrator - generator of coherent heat flow in form of two collecting mirrors and a lens, positioned on different sides of source, with possible redirection of coherent heat flow for interaction with transformer of heat flow with following transfer of heat flow.

EFFECT: decreased energy costs.

1 dwg

FIELD: measuring technique.

SUBSTANCE: electro chromic device has first substrate, which has at least one polymer surface, ground primer coat onto polymer surface, first electro-conducting transparent coating onto ground primer coat. Ground primer coat engages first electro-conducting coating with polymer surface of first substrate. Device also has second substrate disposed at some distance from first substrate to form chamber between them. It has as well the second electro-conducting transparent coating onto surface of second substrate applied in such a way that first coating is disposed in opposition to second one. At least one of two substrates has to be transparent. Device also has electrochromic medium disposed in chamber, being capable of having reduced coefficient of light transmission after electric energy is applied to conducting coatings. Electrochromic medium and ground primer coat are compatible.

EFFECT: simplified process of manufacture; cracking resistance.

44 cl, 1 dwg

FIELD: laser and fiber optics.

SUBSTANCE: in accordance to invention, optical wave guide is heated up during recording of Bragg grating up to temperature, which depends on material of optical wave guide, and which is selected to be at least 100°C, but not more than temperature of softening of optical wave guide material, and selected temperature is maintained during time required for recording the Bragg grating.

EFFECT: increased thermal stability of recorded Bragg gratings.

2 cl, 3 dwg

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