Plasma device for liquid crystal display

IPC classes for russian patent Plasma device for liquid crystal display (RU 2139560):

G02F1/1333 -

Another patents in same IPC classes:

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Display device / 2468402

Invention describes a display device, having: a display panel for displaying images; a heat source lying on the lateral side of the display panel on at least one side of the display panel; a heat absorption section for absorbing heat released by the heat source; a back surface plate lying on the side of the back surface of the display panel and made of metal, a front surface plate lying on the side of the front surface of the display panel and made of metal; and a middle frame lying between the front surface plate and the heat absorption section, wherein part of the back surface plate is in thermal contact with the heat absorption section.

Display device and tv receiver / 2471215

Invention relates to facilities for assembly of display devices and is aimed at reduction of mechanical stresses, which are applied to assembly structures, when a clamping accessory is exposed to thermal expansion or compression, which is provided due to the fact that a display device, for instance, a liquid-crystal one, comprises a plate capable of light transmission, a clamping accessory formed as frame-shaped, with multiple extended parts, stretching along edges of the plate, and multiple connection parts that connected extended parts, besides, the clamping accessory retains the plate edges. There is also a base, on which a clamping accessory is installed, assembly structures designed on connection parts of the clamping accessory and base to retain the clamping accessory, and the base in a condition, in which the clamping accessory is installed on the base. There are structures provided to allow for displacement on connection parts of extended parts and connection parts, to provide for the possibility of movements of extended parts relative to connection parts along the extension direction, in which extended parts stretch. Besides, structures of displacement allowance include the first fastening parts designed on connection parts, and the second fastening parts, designed on extended parts so that each first fastening part and each second fastening part are fixed to each other with a gap between the first fastening part and the second fastening part in direction of extension.

Display / 2473939

Display 1 comprises case 4 composed of front unit 41 to house LC panel 2 and rear unit to house back-lit unit 3. Circumferential surface of front unit 41 covers that of rear unit 42. Moving parts (411a, 412a, 413a, 414a) are secured to circumferential surface of front unit 41. Said parts feature hinges to allow them to turn relative to fixed parts (411b, 412b, 413b, 414b).

Lighting device, display device and tv receiver / 2478870

Lighting device contains a highlighting unit 12 with cold cathode (CC) lamps 18 positioned inside the inverter board (20) mounting rack and transmissive connectors 21. The inverter boards 20 are placed on the mounting rack 14 side opposed to the CC lamp 18. Each inverter board 20 is intended for supply of excitation voltage to the CC lamps 18. The transmissive connectors 21 are installed on the mounting rack 14 and are intended for transmission of power supply from the inverter boards 20 to the CC lamps 18. Each inverter board 20 is linked to a transmissive connector 21 so that to enable detachment in one direction along the board surface. Installed on the mounting rack 14 side are the interlocking parts 35 and 36 projecting above the basic surface BS in the direction of the inverter board 20 butt-end parts 20e - 20g. Each of the interlocking parts 35 and 36 passes from one edge of the butt-end part 20e, 20f or 20g to the other edge. A gap C is arranged between the basic surface BS and each inverter board 20 that is overlapped by the interlocking parts 35 and 36.

Liquid crystal display and liquid crystal display device / 2479860

Disclosed liquid crystal display has: a liquid crystal display component which includes a liquid crystal display panel; a light source unit which has a light source and lies behind the liquid crystal display component; a first circuit for controlling the liquid crystal display component and/or a second circuit for controlling the light source unit lie in a region whose boundary is defined by (i) the plane of the front surface of the liquid crystal display component, and (ii) the plane of the back surface of the light source unit. The light source unit provides backlighting of the liquid crystal display panel, and the front surface of the liquid crystal display component is parallel to the vertical plane. The first circuit and/or second circuit lie in a region located under the light source unit such that they touch the housing of the light source which is included in the light source unit.

Optically controlled devices and methods of making said devices / 2480800

Optically controlled device has: an optically transparent first base having at least a curved first base surface; a conducting layer lying next to the curved first base surface of the first base; an aligning polarisation layer lying next to the conducting layer; an optically transparent second base, having at least a curved first base surface and a layer of liquid crystal material between the aligning polarisation layer and the curved first base surface of the second base. The aligning polarisation layer contains an aligned chromone material, which additionally contains at least one pleochroic dye. The curved first base surface of the first base and the curved first base surface of the second base are interfaced with each other such that a cavity is formed in between them; and the layer of liquid crystal material is in contact with the aligning polarisation layer.

Liquid crystal display device and board clamp mounted on liquid crystal display device / 2482528

Disclosed liquid crystal display device has a liquid crystal panel having a rectangular shape; a frame lying on the back side of the liquid crystal panel; and a front panel lying on the front side of the liquid crystal panel; where the liquid crystal panel is held between the frame and the front panel. The peripheral part of at least one side of the liquid crystal panel is connected by a flexible mounting pad to a printed-circuit board. At least part of the printed-circuit board is held on the outer side surface of the frame by the board clamp mounted on the outer side surface of the frame. The board clamp includes a main body part in form of a plate facing the outer side surface of the frame and a part for engaging the front side and a part of parts for engaging the back side. A receiving part for the front panel is formed in the vicinity of parts for engaging the front side, which is capable for coming into contact with part of the peripheral part of the front panel.

(57) Abstract:

The plasma device comprises a first substrate having a set of first electrodes, a second substrate having multiple second electrodes, many obstacles or barriers formed on the second electrodes within the discharge chamber formed between the second substrate and the dielectric sheet, and the sealing element. The distance between the barriers and the distance between the barrier closest to the sealing element and the sealing element is 1.8 mm or less. The technical result is to exclude the possibility of cracking of the dielectric sheet. 6 C.p. f-crystals, 7 Il.

The present invention relates to a plasma device intended for liquid crystal display, for excitation of liquid crystal due to the use of plasma for playback on screen display "live" relief image.

Prior art
A device that uses the discharge plasma as a device for the excitation of a liquid crystal display for playback on the display screen of a relief image (see, for example, laid out an application Japan N 265931/1992).

The proposed ustroystvo. 1, the glass 12 on the side of a liquid crystal having many electrodes 11 arranged parallel to each other, the glass base (substrate) 14, having a lot of discharge electrodes 13 arranged parallel to each other in position perpendicular to the electrodes 11, the glass 15 thin plate installed between the glass 12 on the side of the liquid crystal and the glass substrate 14, a layer 16 of a liquid crystal between the glass 12 on the side of the liquid crystal and the glass 15 of the thin plate, many of the barrier ribs 18 formed on the discharge electrodes 13 inside the discharge chamber 17, formed between the glass substrate 14 and the glass 15 of the thin plate, and the Frit 19 for sealing the discharge chamber 17.

Glass 12 on the side of the liquid crystal is flat, non-conductive and sufficiently transparent to optical point of view. On the main surface of the glass 12 on the side of the liquid crystal formed many tape electrodes 11, and a layer 16 of a liquid crystal composed of liquid crystal is in contact with the electrodes 11. In more practical sense, many electrodes 11 formed with a width at the main surface of the glass 12 on the side of the liquid crystal opposite to the glass 14 podlozny from the optical point of view. In addition, these electrodes 11 are parallel to each other and, for example, in the vertical direction of the display screen.

The layer 16 of the liquid crystal is kept thin glass plate 15, which is a thin dielectric, plate, and between them is the glass 12 on the side of the liquid crystal. Through the glass 12 on the side of the liquid crystal layer 16 of the liquid crystal and the glass 15 of the thin plate is formed of a so-called liquid crystal cell. This glass 15 thin plate acts as an insulating protective layer between the layer 16 of a liquid crystal and discharge chamber 17, which will be described.

On the other hand, the glass substrate 14, on which is formed a lot bit of electrodes 13 in the form of strip electrodes, and the glass 15 of the thin plate are adapted so that their periphery is sealed with a Frit, which is a sealant. In addition, a space formed between the glass substrate 14 and the glass 15 of the thin plate, serves as a discharge chamber 17 to generate discharge plasma.

The corresponding discharge electrodes 13 are located at the same distance on the glass substrate 14. In addition, these discharge electrodes 13 are formed of p is 17 divided this set of barrier ribs 18, thus, it is divided into the respective plasma chambers P₁P₂..., which form, respectively, regardless of bit channels.

In more practical sense, a lot bit of electrodes 13 formed on the main surface of the glass substrate 14 opposite to the glass 12 on the side of the liquid crystal is formed directly on the glass substrate 14 by printing using a conductive paste that includes, for example, silver powder. These discharge electrodes 13 are parallel to each other, and the direction of their arrangement is perpendicular to the electrodes 11 formed on the described glass 12 on the side of the liquid crystal. Namely, these discharge electrodes 13 are arranged in a horizontal direction relative to the display screen. Thus, the respective plasma chambers P₁P₂... correspond to, for example, the respective scan lines within the image on the display screen. In the respective plasma chambers P₁P₂... hermetically sealed an ionisable gas. As such an ionisable gas used is helium, neon, argon or a mixture of these gases.

The barrier ribs 18 formed by the ribs 18 formed by gaskets many times, method of laying in the foot, glass paste, which is mixed with ceramics, such as alumina by the method of packing, for example, by screen printing, and they also serve to limit the distance between the glass substrate 14 and the glass 15 thin plate (hereinafter will be called as the interval period of the discharge chamber 17). The interval period of the discharge chamber 17 can be adjusted by regulating the operations screen printing during the formation of the barrier ribs 18 or quantity of glass paste during each printing. Typically, the interval of the gap is approximately 200 microns.

The discharge electrodes 13 act as an anode or cathode electrode, and discharge electrodes consist of pairs of such electrodes. In the case where the barrier ribs 18 are formed on the discharge electrodes 13, as described, the corresponding one bit of the electrodes 13 is usually used with the adjacent plasma cells in the respective plasma chambers P₁P₂... separated these barrier ribs 18. Namely, for example, the discharge electrode 13 between the plasma chamber P₁and a plasma chamber P₂serves as a discharge electrode of a plasma chamber P_{the exercise mentioned plasma device, designed for LCD display.}

_{First, form a set bit of the electrodes 13 on the glass substrate 14 for manufacturing barrier ribs 18 by printing so that they are stacked in the foot on these discharge electrodes 13. Then put the Frit 19 on the periphery of the barrier ribs 18 for the formation of the discharge chamber 17. Then attach a thin glass plate 15 on the upper parts of the barrier ribs 18 for evacuating the internal cavity of the discharge chamber 17 to fill it with gas.}

_{The thickness of the thin glass plate 15 is approximately 50 μm. A thin glass plate 15 acts as an insulating protective layer between the layer 16 of a liquid crystal and a bit of the camera, as described above. In the process of vacuum and gas injection, as shown in Fig. 1, attached great effort to areas Q₁, Q₂a thin glass plate 15, i.e., plots of Q₁, Q₂where a thin glass plate 15 is in contact with the edge portions of the barrier ribs 18. In addition, inside the glass may contain small cracks, so-called micro-cracks.}

Thus, in the described plasma device is₁, Q₂a thin glass plate 15 will increase in size as a result of the pumping process and the injection of gas, thus, the glass 15 of the thin plate will crack or crumble.

In view of the actual circumstances that have been described, the present invention is the creation of a plasma device, intended for liquid crystal display, which is able to eliminate cracking or damage to the glass thin plate.

Description of the invention
Plasma device for liquid crystal display, in accordance with the present invention includes a first substrate having a set of first electrodes arranged essentially parallel to each other on one main surface of the first substrate, a second substrate, having a set of second electrodes arranged essentially parallel to each other in a position essentially perpendicular to the first electrodes on the main surface opposite to the first electrodes on the first substrate, the dielectric sheet located between the first and second substrates, a liquid crystal layer between the first substrate and the dielectric sheet, many barriers, dielectric, and the sealing element in order to seal the discharge chamber. In a plasma device, intended for liquid crystal display, the distance between the barriers and the distance between the barrier installed near the sealing element and the sealing element is 1.8 mm or less.

In this case, the dielectric sheet has a thickness of 50 μm or less, and the barriers formed on the second electrodes or between the second electrodes. In addition, the second electrodes are composed of anode and cathode electrodes, and barriers respectively formed only on the anode electrodes.

Also preferably, the distance between the barrier installed near the sealing element and the sealing element was equal to 0.8 mm or less.

Brief description of drawings
Fig. 1 is a schematic view in cross section showing the construction of the known plasma device designed for LCD display.

Fig. 2 is a schematic view in cross section showing the structure of a plasma device, intended for liquid crystal display according to the first variant implementation of the invention.

Fig. 4 is a schematic view in cross section showing an essential part of a plasma device designed for LCD display.

Fig. 5 is a schematic view in cross section showing an essential part of a plasma device designed for LCD display.

Fig. 6 is a schematic view in cross section showing essential part of a plasma device, intended for liquid crystal display according to the second variant embodiment of the invention.

Fig. 7 is a schematic view in cross section showing essential part of a plasma device, intended for liquid crystal display according to the third variant embodiment of the invention.

The optimal way of carrying out the invention
Now, specific performance of a plasma device, intended for liquid crystal display, in accordance with this invention will be described with reference to the attached drawings.

Plasma device for liquid crystal display, in accordance with the present invention contains, as shown, for example, the main surface essentially parallel to each other, the glass substrate 24 having a lot of discharge electrodes 23 arranged essentially parallel to each other in a position essentially perpendicular to the electrodes 21 on the main surface opposite to the electrodes 21 on the glass 22 on the side of the liquid crystal, the dielectric sheet 25 between the glass 22 on the side of the liquid crystal and the glass substrate 24, a layer 26 of a liquid crystal located between the glass 22 on the side of the liquid crystal and the dielectric sheet 25, many of barrier ribs 28 formed on the discharge electrodes 23 on the inside of the discharge chamber 27 formed between the glass substrate 24 and the dielectric sheet 25, and sealing element 29 mounted in order to seal the discharge chamber 27.

Glass 22 on the side of the liquid crystal is flat and non-conductive and sufficiently transparent to optical point of view. Many of strip electrodes 21 having a predetermined width, are essentially parallel to each other on the main surface opposite to the dielectric sheet 25.

Direction of arrangement of these electrodes 21 is, for example, a vertical direction of the display screen. The electrodes 21 formed of a transparent conductive material, such as oxide and ostoic, for example, liquid crystal, and it is located between the glass 22 on the side of the liquid crystal and the dielectric sheet 25 in the position of the contact electrodes 21.

The dielectric sheet 25 is, for example, glass in the form of a thin plate. To ensure sufficient electrical connection between the layer 26 of a liquid crystal and discharge chamber 27, which will be described, the glass in the form of a thin plate should have a thickness of, for example, 50 μm. Namely, the so-called liquid crystal cell formed of glass 22 on the side of the liquid crystal layer 26 of the liquid crystal and the dielectric sheet 25. The dielectric sheet 25 acts as an insulating protective layer between the layer 26 of a liquid crystal and discharge chamber 27.

On the other hand, on the glass substrate 24 is full bit of electrodes 23 are essentially parallel to each other in a position essentially perpendicular to the electrodes 21 on the main surface opposite to the electrodes 21 on the glass 22 on the side of the liquid crystal. Namely, the direction of arrangement of the multiple discharge electrodes 23 is, for example, the horizontal direction of the display screen, and discharge electrodes 23 are formed for each scan element. the application of the conductive paste, includes, for example, silver powder, thus they have a specified width.

Furthermore, in a plasma device, intended for liquid crystal display having a structure in which barrier ribs 28, which will be described, is formed on the discharge electrodes 23, as shown in Fig. 2, for example, the discharge electrodes 23 are arranged so that the distance between the barrier ribs 28 and the distance between the barrier rib 28 and the sealing element 29, which will be described, is equal to 1.8 mm or less. In this embodiment, the distance between the barrier ribs 28 is 0.65 mm, and the distance between the barrier rib 28 and the sealing element 29 is 1.0 mm

The glass substrate 24 on which is formed a lot of discharge electrodes 23 in the form of a tape electrode, sealed and supported on its periphery sealing element 29, and it is located at a predetermined distance from the dielectric sheet 25. The sealing element 29 is formed by applying, for example, powdered glass (Frit), thus, the thickness becomes equal to the specified value. Usually the thickness of the sealing element 29 is approximately 200 mm, the space formed between Nali.

Discharge chamber 27 formed between the glass substrate 24 and the dielectric sheet 25, separated along the bit electrodes 23 many of barrier ribs 28, which are respectively formed on the discharge electrodes 23, as shown, for example, in Fig. 2, and, therefore, is divided into the plasma chamber P₁P₂. .. respectively independent. Namely, the barrier ribs 28 are also formed for each scan element in the respective tape discharge electrodes 23. Thus, the respective plasma chambers P₁P₂. . . correspond, for example, the respective scan lines within the image on the display screen. The barrier rib 28 is formed by printing a lot of times, the method of installation in the foot, glass paste, which is mixed with ceramics, such as alumina, a printing method such as screen printing, and therefore, it also serves to limit the distance between the glass substrate 24 and the dielectric sheet 25. The distance between the glass substrate 24 and the dielectric sheet 25 can be adjusted by throttling operations screen printing during the formation of the barrier ribs 28 or the amount of the glass paste during each bachmannii chambers P₁P₂... formed in this way. As such an ionisable gas used is helium, neon, argon or mixtures thereof.

In a plasma device, intended for liquid crystal display, for example, the video signal is supplied to the electrodes 21 located in a vertical direction relative to the display screen, and the voltage supplied through a pair of discharge electrodes 23 inside the plasma chamber P₁corresponding to the scan line to form a plasma discharge in the plasma chamber P₁for playback on the display screen of the picture.

In more practical sense, discharge electrodes act as the anode or the cathode electrode during the sequential application of the potential. When, for example, one bit electrode 23 is grounded (making the voltage of 0 volt), and all of the other discharge electrode 23 makes a negative potential, grounded discharge electrode 23 becomes the anode electrode, and the discharge electrodes on both sides of the grounded discharge electrode 23 becomes the cathode. Thus, plasma discharge occurs inside the plasma chambers on both sides zazemlennom with a horizontal scanning signal, you can move the plasma chamber for exposure to the discharge synchronously with the horizontal scanning.

The layer 26 of a liquid crystal acts as a gate capacitor of the analog voltage supplied to the electrodes 21 formed on the glass 22 on the side of the liquid crystal, and (arbitrarily chosen) plasma chamber P₁acts as a selection switch. Thus, reproduction of the image. Namely, the layer 26 of a liquid crystal can be regarded as a model of the condenser and subjected to decomposition on capacitance of the liquid crystal cell formed on the area where the electrodes 21 and the plasma chamber P₁that overlap.

Suppose now that the discharge electrode 23 is attached analog voltage, a voltage of About volts is attached to one discharge electrode 23 in the form of a gate pulse and inside the plasma chamber P₁is discharge plasma, then the operation of the so-called plasma switch. Thus, the part that is in contact with the plasma chamber P₁sheet of dielectric 25 and the discharge electrode 23 serving as the anode elec, istihaada condition, equivalent to the position in which the capacitor switch is turned on. In the analog voltage applied to the electrode 21, is attached to the condenser model. After that, when the plasma discharge is stopped, the capacitor switch is turned off. As a result, an analog voltage, which was applied directly to the turn-off capacitor switch, is stored in the condenser model. Also, after the disappearance of the discharge plasma, over a period of time until the next gate pulse, i.e., for example, the time period field of the corresponding image of the picture, is the state where the above-mentioned analog voltage is stored in capacitor model. When capacitive liquid crystal cell is excited, plasma LCD reproduced image based on the video.

Now will be described the part of the method of manufacturing the aforementioned plasma device designed for liquid crystal display, in which the barrier ribs are formed on the discharge electrodes. Fig. 3 is a front view of a plasma device designed for zhidkokristal. , and Fig. 5 is a view in transverse section on an enlarged scale in the plane d-D of Fig. 3.

As shown in Fig. 4 and 5, first filling a conductive paste that includes, for example, silver powder, a glass substrate 24 to a predetermined width and over equal intervals, and then calcined to form the set bit of the electrodes 23 on the glass substrate 24. The set bit of the electrodes 23 is formed so that the distance (interval) between the barrier rib 28 formed on the discharge electrode 23 on the next stage of the process, and the sealing element 29 and the distance between the barrier ribs 28, i.e., the interval of the step-In barrier ribs 28, was equal to 1.8 mm or less. In more practical sense, for example, the distance And set at 1.0 mm, and the interval of the step In the install 0.65 mm

As shown in Fig. 5, both end parts of the set bit of the electrodes 23 formed in the cover 30 (the figure shows only one) to prevent discharge. Also, the barrier ribs 28 formed on the many bit of electrodes 23 screen printing. Namely, a glass paste, which is admixed, for example, ceramics, alumina gasket, print many times, in the form of laying a foot on rasra hernych ribs 28 with an interval of 0.65 mm. After that educated thus the upper part of the multiple barrier rib is subjected to polishing and firing.

Then on the periphery of the barrier ribs 28 is applied, for example, the Frit so that the thickness was approximately 200 μm for the formation of the sealing element 29. At the same time, the sealing element 29 is formed so that the distance between the barrier rib 28 and the sealing element 29 was equal to 1.8 mm or less, i.e. 1,0 mm

Then on top of the barrier ribs 28 are attached to the dielectric sheet 25 for the formation of the discharge chamber 27, consisting of plasma cells P₁P₂... for vacuum discharge chamber 27. Then introducing an ionisable gas, such as helium or neon.

The thickness of the dielectric sheet 25, consisting of a thin sheet of glass, is about 50 μm, as described above. In the process of evacuation and injection of gas creates a large voltage plots of Q₁, Q₂the dielectric sheet 25 in contact with the edge portions of the barrier ribs 28, as shown in Fig. 2. However, since the interval of the step-In barrier ribs 28 is set to 0.65 mm, and the distance between the barrier rib 28 and the sealing element 29 is 1.0 mm in this embodiment, the COI is 5 kg/cm²or less.

The result eliminates the possibility of cracking or breakage of the dielectric sheet 25. In addition, even if there are small cracks, so-called cracks, exclude the possibility that cracks become large and the dielectric sheet 25 will crack or break. It should be noted that although A distance between the barrier rib 28 and the sealing element 29 and the interval of the step B of the barrier ribs 28 are changed depending on the thickness of the dielectric sheet 25, yet more preferably equal to 0.8 mm or less.

It should be noted that although in the described variant embodiment (hereinafter will be called the first embodiment), a plasma device for liquid crystal display has a structure in which barrier ribs 28 formed on the discharge electrodes 23, but the invention is not limited to this first embodiment and it can be used with plasma devices, liquid crystal display having a structure in which the cathode and anode electrodes are respectively in plasma chambers.

In more practical sense, a plasma device, is destined is the number of its essential parts, as shown, for example, in Fig. 6 (see Fig. 2 in connection with items that are not shown in Fig. 6), the glass 22 on the side of the liquid crystal, having a set of electrodes 21 arranged essentially parallel to each other on one main surface of the glass substrate 24 having multiple anode electrodes 31 and many of the cathode electrodes 32 arranged essentially parallel to each other in a position essentially perpendicular to the electrodes 21 on the main surface opposite to the electrodes 21 on the glass 22 on the side of the liquid crystal, the dielectric sheet 25, located between the glass 22 on the side of the liquid crystal and the glass substrate 24, a layer 26 of a liquid crystal, located between the glass 22 on the side of the liquid crystal and the dielectric sheet 25, many of barrier ribs 28 formed on the anode electrodes 31 on the inside of the discharge chamber 27 formed between the glass substrate 24 and the dielectric sheet 25, and the sealing element 29 for sealing the discharge chamber 27.

Namely, in a plasma device, intended for liquid crystal display according to the second embodiment of the tape of the anode electrode 31 has a width similar to the width of the discharge electrode 23 in the first embodiment and is on the anode electrodes 31. It should be noted that the same elements have the same designation with the elements in the first embodiment, the plasma device's LCD display and therefore their detailed explanation and the work is not given.

Also in a plasma device, intended for liquid crystal display according to the second variant embodiment of a distance between the barrier rib 28 and the sealing element 29 and the interval of the step B of the barrier ribs 28 are mounted on 1.8 mm or less and they are 1.0 mm and 0.65 mm In the process of vacuumization and gas injection eliminates the possibility of cracking or breaking.

In addition, the plasma device used for a liquid crystal display according to the third variant embodiment of the invention, contains as its essential parts, as shown, for example, in Fig. 7 (see Fig. 2 in connection with items that are not shown in this figure), the glass 22 on the side of the liquid crystal, having a set of electrodes 21 arranged parallel to each other on one main surface of the glass substrate 24 having multiple anode electrodes 33 and many of cathode electrodes 34, arranged parallel drug on glass 22 on the side of the liquid crystal, the dielectric sheet 25, located between the glass 22 on the side of the liquid crystal and the glass substrate 24, a layer 26 of a liquid crystal located between the glass 22 of the liquid crystal and the dielectric sheet 25, many of barrier ribs 28 formed between the anode electrode 33 and the cathode electrodes 34, which are located adjacent to each other within the discharge chamber 27 formed between the glass substrate 24 and the dielectric sheet 25, and the sealing element 29 located in order to seal the discharge chamber 27.

Namely, the plasma device used for a liquid crystal display according to the third variant embodiment has a construction in which a pair of the anode electrode 33 and the cathode electrodes 34 are respectively in each respective plasma chamber, and the barrier ribs 28 formed between the anode electrode 33 and the cathode electrodes 34, which are located adjacent to each other inside the plasma chamber. It should be noted that the same elements of plasma liquid crystal display device corresponding to the elements of the plasma device according to the first embodiment, have the same designation and therefore the explanation of their details and reopen third variant embodiment of a distance between the barrier rib 28 and the sealing element 29 and the interval of the step B of the barrier ribs 28 are mounted on 1.8 mm or less, for example, they are 1.0 mm and 0.65 mm, as a result, during the process of vacuum and gas injection eliminates the possibility of cracking or breakage of the dielectric sheet 25.

Industrial applicability
As clear from the description above, a plasma device for liquid crystal display, in accordance with the present invention is made so that the distance between the many obstacles and the distance between the barrier installed near the sealing element and the sealing element is 1.8 mm or less, thereby allowing you to eliminate the possibility of cracking or breakage of the sheet of dielectric during the stage of the process of evacuation and injection of gas during the manufacture of the plasma device designed for LCD display. Thus the so-called output can be improved to a large extent in comparison with the known device.

1. Plasma device for liquid-crystal display containing a first substrate having a set of first electrodes arranged essentially parallel to each other on one main surface of the first substrate, a second substrate, it is perpendicular to the first electrodes on the main surface opposite to the first electrodes on the first substrate, the sheet of dielectric located between the first and second substrates, the liquid crystal layer placed between the first substrate and the dielectric sheet, many barriers formed along the second electrodes within the discharge chamber formed between the second substrate and the dielectric sheet, and the sealing element in order to seal the discharge chamber, in which the distance between the barriers and the distance between the barrier closest to the sealing element and the sealing element is 1.8 mm or less.

2. Plasma device under item 1, in which the barriers are formed on the second electrodes.

3. Plasma device under item 1, in which the barriers are formed between the second electrodes.

4. Plasma device under item 1, in which the second electrode comprises an anode electrode and cathode electrode, the barriers are located respectively between the anode and cathode electrodes.

5. Plasma device under item 1, in which the second electrode consists of anode and cathode electrodes, and the barriers formed only on the anode electrodes.

6. Plasma device under item 1, in which the distance between the barriers and the distance between ptx2">

7. A plasma device according to p. 1, wherein the dielectric sheet has a thickness of 50 μm or less.