JPH0682761A - Plasma address display device - Google Patents

Abstract

PURPOSE:To facilitate the manufacture of a plasma cell used for addressing in a plasma address display device, and stabilize the operation. CONSTITUTION:A plurality of signal electrodes D almost parallel to each other are formed along the main surface of a base 4, and plasma electrodes 7 are printed orthogonally to the signal electrodes D and in parallel to each other. Further, opaque insulating strip patterns 8 or ribs are superposed and printed to be orthogonal to the plasma electrodes 7. Plasma chambers 10 are formed between a liquid crystal layer 5 and a base 6, and an ionizable gas is sealed therein. The gap space of the plasma chambers 10 is controlled by the film thicknesses of the plasma electrodes 7 and the stripe patterns 8. The gas is selectively ionized by the discharge of the adjacent plasma electrodes 7, and by using the discharge area in which the ionized gas is locally present as a scanning unit, the liquid crystal layer 5 situated in the intersection part between the signal electrodes D and the discharge area is driven.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma addressed display device having a laminated structure in which a display cell such as a liquid crystal cell and a plasma cell are stacked, and more particularly to a pattern configuration of a plasma cell for addressing.

[0002]

2. Description of the Related Art As means for achieving high resolution and high contrast of a matrix type liquid crystal display device,
A method in which a switching element such as a thin film transistor is provided for each display pixel and is driven line-sequentially (so-called active matrix address method) is generally known. However, in the case of this method, it is necessary to form a large number of semiconductor elements such as thin film transistors on the substrate, and there is a drawback that the yield is poor especially when the area is increased.

As a means for solving this drawback, Buzaku et al., In Japanese Patent Laid-Open No. 1-217396, proposed a method of using a plasma cell as a switch for addressing instead of a switching element such as a thin film transistor. Hereinafter, the configuration of a display device that uses a plasma cell to address a display cell, for example, a liquid crystal cell will be briefly described. As shown in FIG. 6, this type of display device has a structure in which a liquid crystal cell 101 and a plasma cell 102 are stacked with a dielectric partition wall 103 made of thin plate glass or the like interposed therebetween. The plasma cell 102 is formed using a lower substrate 104, and has a plurality of grooves 10 parallel to each other on its surface.
5 are provided. Each groove 105 is hermetically sealed by a partition 103. An ionizable gas is enclosed therein to form an individually separated plasma chamber 106. Therefore, the ridges 107 between the grooves 105 serve as side walls or ribs for separating the individual plasma chambers 106, and also the substrate 104 for the partition walls 103.
Also plays a role as a gap spacer. The bottom of each groove 105 has a pair of electrodes 108 and 1 parallel to each other.
09 are provided. These pair of electrodes function as an anode electrode and a cathode electrode for ionizing the gas in the plasma chamber 106 and generating discharge plasma.

On the other hand, the liquid crystal cell 101 has a liquid crystal layer 111 sandwiched between a dielectric partition 103 and a transparent substrate 110. The signal electrode 1 is formed on the inner surface of the transparent substrate 110.
12 are formed. The signal electrode 112 made of this transparent conductive thin film is orthogonal to each plasma chamber 106.
The signal electrode 112 serves as a column driving unit and the plasma chamber 106 serves as a row scanning unit, and matrix pixels are defined at the intersections of the two.

In such a display device, the plasma chamber 106 in which plasma discharge is performed is line-sequentially switched and scanned, and an analog drive voltage is applied to the signal electrode 112 on the liquid crystal cell 101 side in synchronization with the line-sequential scanning. Drive pixels by things. When discharge plasma is generated in the plasma chamber 106, the entire chamber is maintained at a substantially anode potential. When a drive voltage is applied to the pixel in this state, charges are injected into the liquid crystal layer 111 of each pixel via the dielectric partition 103. When the plasma discharge ends, the plasma chamber 106 becomes a floating potential and the injected charges are held in each pixel. The so-called sampling hold is performed and the plasma chamber 1
06 functions as a sampling switch, while the liquid crystal layer 111 functions as a sampling capacitor. The liquid crystal operates according to the sampled charge amount, and the display device is turned on and off in pixel units.

[0006]

When the plasma addressed display device described above is put to practical use, the plasma cell has various structural and manufacturing problems. Generally, the groove forming the plasma chamber has been formed by photolithography and etching. However, it is extremely difficult to form high-definition and high-density grooves on a large-area substrate with high accuracy, and a large manufacturing cost is required. Further, the plasma electrodes such as the anode electrode and the cathode electrode provided at the bottom of each groove are also formed by selective etching of the vacuum deposition thin film or the sputtered thin film. Therefore, at least a photomask for forming a plasma electrode is required in addition to a photomask for forming a groove, and there is a problem that precise alignment between both masks is difficult. In addition, when the display device is increased in size, the thin film electrode inevitably becomes long. Since the thin film electrode has a relatively large resistance value, a voltage drop along the electrode is inevitable and stable plasma discharge cannot be generated.

[0007]

SUMMARY OF THE INVENTION In view of the problems or problems of the above-mentioned conventional techniques, it is an object of the present invention to provide a plasma cell structure that is easy to manufacture and can operate stably. The following measures have been taken in order to achieve this object. That is, the plasma addressed display device according to the present invention includes a first substrate having a plurality of first electrodes, that is, signal electrodes, which are substantially parallel to each other along a predetermined main surface. The second substrate is arranged to face the first substrate. On the main surface of the second substrate, a plurality of second electrodes or plasma electrodes, which are printed and baked substantially orthogonal to the signal electrodes and parallel to each other, are formed. Further, an opaque insulating stripe pattern is printed and baked so as to be orthogonal to the plasma electrode. An electro-optical material layer such as a liquid crystal layer is interposed between the first and second substrates. A continuous plasma chamber is provided between the electro-optical material layer and the second substrate and is filled with an ionizable gas. In such a configuration,
The enclosed gas is selectively ionized by the discharge between the adjacent plasma electrodes, and the electro-optical material layer located at the intersection of the signal electrode and the discharge region is driven with the discharge region where the ionized gas is localized as a scanning unit.

Preferably, the plasma electrode is a nickel thick film electrode and the insulating stripe pattern is a black glass thick film. According to a typical aspect of the present invention, a dielectric partition plate is interposed so as to be in contact with the electro-optical material layer, and the insulating stripe pattern has a flat and continuous top surface. A rib is formed by contacting and supporting the body partition plate. Particularly in the case of performing color display, the RG provided corresponding to the plurality of substantially parallel first electrodes on the first substrate.
The B three primary color filters are repeatedly arranged, and the ribs are arranged at a pitch that is a non-integer multiple of the pitch of the repeating arrangement.

[0009]

According to the present invention, a thick film plasma electrode is provided by printing on the surface of the second substrate. Since the thick film electrode has a smaller resistance value than the thin film electrode, the voltage drop can be suppressed even when the substrate is enlarged. An insulating stripe pattern is printed so as to be orthogonal to the thick film plasma electrode. The intersection of the stripe pattern and the plasma electrode is raised and acts as a gap spacer. That is, a continuous plasma chamber can be formed by adhering the second substrate to the electro-optical material layer side through this intersection, so that a so-called open cell structure can be obtained. Even with an open cell structure, discharge plasma can be localized along each plasma electrode. The display device is driven by using the localized discharge region as a scanning unit. As described above, the plasma electrode and the insulating stripe pattern are printed orthogonally, and the alignment between the two can be performed with relatively coarse accuracy. Therefore, the workability is improved and the manufacturing cost of the display device is reduced.

According to one aspect of the present invention, the insulating stripe pattern constitutes a rib and continuously abuts on the electric insulating layer side. Since the rib is orthogonal to the plasma electrode, the discharge region forming the scanning unit is partitioned or subdivided by the rib. When the discharge is concentrated at a specific location due to variations in the distance between adjacent plasma electrodes,
Since it is partitioned by the ribs, the concentration of the discharge is localized and the plasma discharge can be stabilized.

In the case of performing color display, the repeating arrangement of the RGB three primary color filters is the first along the signal electrodes.
Is provided on the inner surface of the substrate. On the other hand, since the above-mentioned rib has a stripe pattern parallel to the signal electrodes, it also has a parallel relationship with the RGB three primary color filters. In addition, since the rib has a predetermined height, a part of the RGB three primary color filters is blocked depending on the viewing angle, so-called parallax occurs. In view of this point, the ribs are arranged at a pitch that is a non-integer multiple with respect to the repeating arrangement pitch of the RBG three primary color filters, so that only the color filters of a specific color are not blocked, and the visual angle-dependent color Prevents shading.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic sectional view showing an embodiment of a plasma addressed display device. This device has a laminated structure in which a display cell, for example, a liquid crystal cell 1 and a plasma cell 2 and a dielectric partition 3 interposed therebetween are stacked. The liquid crystal cell 1 is composed of a transparent substrate 4. A plurality of signal electrodes D arranged in the column direction are formed on the inner surface of the substrate 4. The signal electrode D is made of a transparent conductive thin film such as ITO. The substrate 4 is arranged to face the dielectric partition wall 3 with a spacer having a predetermined thickness interposed therebetween. An electro-optical material layer, that is, a liquid crystal layer 5 is enclosed and filled in the gap between the two. As the electro-optical material, a solid material such as PLZT or an encapsulated electro-optical material can be used instead of a fluid material such as liquid crystal. When using a solid material or an encapsulated electro-optical material, the dielectric partition 3 can be removed.

The plasma cell 2 is constructed using a lower substrate 6. In the case of a transmissive display device, a transparent material is used for both the pair of substrates. However, in the case of the reflection type, one substrate does not necessarily need to be transparent. Anode electrodes A and cathode electrodes K are alternately formed on the inner surface of the substrate 6. These electrodes are plasma electrodes 7
Becomes The anode electrode A and the cathode electrode K are not necessarily fixed and may be alternately switched depending on the driving method. The plasma electrode 7 is arranged orthogonal to the signal electrode D extending in the column direction and extends in the row direction. A plasma electrode 7 is further formed on the inner surface of the substrate 6.
Opaque insulating striped pattern 8 stacked orthogonally to
Are formed. Therefore, the stripe pattern 8 extends in the column direction like the signal electrode D. The protrusion 9 rising at the intersection of the plasma electrode 7 and the stripe pattern 8 is in contact with the dielectric partition wall 3. That is, the protrusion 9 plays the role of a gap spacer, and a continuous plasma chamber 10 is formed between the dielectric partition 3 and the substrate 6. The periphery of the plasma chamber 10 is hermetically sealed by a sealing material 11.
Further, the stripe pattern 8 prevents the plasma electrode 7 from directly contacting the dielectric partition wall 3. Inside the plasma chamber 10, an ionizable gas such as helium, neon,
Argon, xenon, or a mixed gas of these is sealed.

When a predetermined voltage is applied between the anode electrode A and the cathode electrode K, the gas is ionized and discharge plasma is generated. This discharge plasma is substantially localized between the adjacent anode electrode A and cathode electrode K and forms a discharge region. The liquid crystal cell 1 is driven by using this discharge region as a row scanning unit. In this embodiment, the plasma chamber 10 is a continuous space over the entire substrate. Therefore, there is concern that the resolution may deteriorate due to the diffusion of ion particles generated by plasma discharge. However, such diffusion practically does not occur and a localized discharge region is obtained. As is well known, with respect to the pressure of the gas sealed in the plasma chamber, the higher the pressure is, the smaller the mean free path of the ion particles and the more prominent the localization tendency. Therefore, the discharge plasma can be locally controlled by setting the gas pressure to be high to some extent. However, if the gas pressure is increased, the discharge starting voltage may increase. This can be adjusted according to Paschen's law by setting the space between the plasma electrodes, that is, the space between the adjacent anode electrode A and cathode electrode K to be small in inverse proportion to the gas pressure. Although the optimum values of the gas pressure and the electrode interval vary depending on the type of gas used, etc., if an appropriate gas is selected and the gas pressure and the electrode interval are optimally set, discharge can be performed at 1 atm. Further, by appropriately setting the height of the protrusions 9 of the stripe pattern 8 and reducing the gap interval of the plasma chamber 10 to some extent, the diffusion of the discharge plasma can be suppressed.

FIG. 2 is a sectional view showing the same embodiment, but FIG. 1 is taken along the column direction, whereas FIG. 2 is taken along the row direction. Show. That is, it is a cross-sectional view taken along the line AA shown in FIG. 1. As is clear from the figure, the stripe pattern 8 is formed in parallel with the signal electrode D. In addition, the individual stripe patterns 8 are arranged so as to match the gaps between the adjacent signal electrodes D. The stripe pattern 8 is made of an opaque material and serves as a black stripe mask for this gap. That is, it also has a function of masking the crosstalk generated in this gap so that it cannot be visually recognized from the outside.

FIG. 3 is a schematic perspective view showing an arrangement of plasma electrodes and stripe patterns, which are characteristic components of the present invention. In addition, the arrangement of the signal electrodes is also shown. In addition, the line AA of the figure shows the section line for FIG. 2 and the line BB shows the section line for FIG.

As shown in the figure, the plasma electrodes 7 extend in the column direction with a predetermined interval. The plasma electrode 7 is formed by screen printing or the like. For example, nickel paste (for example, DuPont nickel paste 9535) is printed once in a strip shape with a line width of 50 μm to 200 μm. A nickel thick film electrode having a thickness of 5 μm to 200 μm is formed by performing a firing process according to a normal temperature profile. The peak temperature of the firing profile is, for example, 570 ° C to 600 ° C. A predetermined film thickness can be obtained by appropriately setting the number of times screen printing is repeated. This is advantageous when manufacturing a display device having a large area as compared with the conventional thin film electrode formation by photolithography and etching. Further, since the thick film electrode has a larger film thickness than the thin film electrode, the voltage drop can be suppressed even if the electric resistance is small and the plasma electrode 7 becomes long.

The opaque insulating stripe patterns 8 are printed in an overlapping manner in the direction orthogonal to the plasma electrodes 7, that is, in the column direction. For example, a black glass paste (for example, DuPont glass paste 9740) is printed once in a strip shape with a line width of 50 μm to 200 μm by a screen printing method. This black glass paste is fired according to a normal temperature profile (peak temperature of 570 ° C. to 600 ° C.) to obtain a black glass thick film. By appropriately setting the number of times of repeated printing, a stripe pattern having a thickness of 5 μm to 200 μm can be formed, and the height of the protrusion 9 can be set to 1
It can be adjusted in the range of 0 μm to 400 μm. As described above, the height of the protrusion 9 defines the gap distance of the plasma chamber. The screen printing of the insulating stripe pattern 8 is performed orthogonal to the plasma electrode 7. Therefore, the alignment of the printing screen is relatively rough, and the manufacturing cost can be reduced.

On the other hand, the signal electrode D is formed along the column direction. In addition, an opaque stripe pattern 8 is arranged so as to match the gap between the adjacent signal electrodes D. Therefore, so-called crosstalk generated in this gap can be effectively masked so that it cannot be visually recognized from the outside. Therefore, the display quality is improved.

The operation of the plasma addressed display device according to the present invention will be described with reference to FIG. FIG. 4 is a schematic block diagram showing an example of a drive circuit. As shown, the drive circuit includes a signal circuit 21, a scanning circuit 22, and a control circuit 23. A plurality of signal electrodes D1 to Dm are connected to the signal circuit 21 via buffers. On the other hand, the inner cathode electrodes K1 to Kn of the plasma electrodes are also connected to the scanning circuit 22 via buffers. On the other hand, the anode electrodes A1 to An are grounded.
The signal circuit 21 and the scanning circuit 22 are controlled by the control circuit 23 so as to synchronize with each other. Cathode electrode K
1 to Kn are line-sequentially selected by the scanning circuit 22.
For example, when the cathode electrode K1 is selected, plasma discharge is generated between the adjacent anode electrodes A1 and A2, and a localized discharge region is formed. This discharge area constitutes a row scanning unit. On the other hand, an analog drive voltage is applied to each of the signal electrodes D1 to Dm in synchronization with the line-sequential scanning. Therefore, each of the signal electrodes D1 to Dm constitutes a column driving unit. Individual pixels 24 are defined at the intersections between the column driving units and the row scanning units.

FIG. 5 is a schematic diagram showing only two pixels 24 shown in FIG. In this figure, for ease of understanding, only two signal electrodes D1 and D2, one cathode electrode K1 and one anode electrode A1 are shown. Each pixel 24 has a signal electrode (D1, D2),
It has a laminated structure composed of a liquid crystal layer 5, a dielectric partition layer 3, and a plasma discharge region. When activated, the discharge region is substantially at the anode potential. On the other hand, when the plasma discharge ends, the floating potential is reached. Therefore, the discharge region functions as a plasma switching element and is therefore schematically represented by the switch symbol S1. On the other hand, the liquid crystal layer 5 sandwiched between the signal electrodes (D1, D2) and the dielectric partition 3 functions as a sampling capacitor. When the plasma switch S1 is turned on by the line-sequential scanning, the analog drive voltage is held in the sampling capacitor, and the gradation lighting or extinguishing operation of each pixel is performed according to the voltage level. Even after the plasma switch S1 is turned off, the driving voltage is held in the sampling capacitor and the active matrix driving of the image display device is performed.

Next, another embodiment of the plasma addressed display device according to the present invention will be described with reference to FIG. Basically, it has the same structure as that of the embodiment shown in FIG. 1, and corresponding parts are provided with corresponding reference numerals for easy understanding. The difference from the embodiment shown in FIG. 1 is that the insulating stripe pattern 8 has a flat and continuous top surface and abuts and supports the dielectric partition wall 3 to form a rib.
In other words, in the embodiment shown in FIG. 1, only the projection 9 located at the intersection of the plasma electrode 7 and the stripe pattern 8 is in contact with the dielectric partition wall 3, whereas in the embodiment shown in FIG. The projection 9 has a completely continuous structure.
For the rib having such a structure, for example, the insulating stripe pattern 8 may be printed thickly in advance, and the top surface thereof may be polished to be flattened.

FIG. 8 is a schematic diagram showing a plane pattern of the embodiment shown in FIG. As shown, the plasma electrode 7 and the rib 8 are orthogonal to each other. Therefore, the relative printing accuracy between them may be coarse. The plasma chamber 10 defined between the pair of anode electrodes A and cathode electrodes K is divided or partitioned by the ribs 8 which are orthogonal to each other.
Unlike the embodiment shown in FIG. 1, the compartments do not communicate with each other.
If there is an irregular projection P on a part of the cathode electrode K, discharge will occur strongly and ions and electrons will be localized in the vicinity thereof. This abnormal discharge gradually expands and discharge concentration occurs over a length of several mm. In this case, since the ribs 8 are provided in this embodiment, the discharge concentration is limited to one section, and the adjacent sections can maintain stable discharge.

FIG. 9 shows a comparative example of the plasma addressed display device for reference. Basically, it is the same as the embodiment of the present invention shown in FIG. 7, and corresponding parts are provided with corresponding reference numerals to facilitate understanding. The comparative example is different from the example in that the ribs 8 are not orthogonal to the plasma electrodes 7 but are patterned in parallel and are aligned with the respective plasma electrodes 7 in a plan view.

FIG. 10 shows a planar pattern shape of the comparative example shown in FIG. The plasma chamber 10 defined between the adjacent anode electrode A and cathode electrode K is neatly divided by the ribs 8 parallel to it, and theoretically seems to be superior to the orthogonal arrangement of FIG. . However, in practice, it is difficult to perform the layered printing by accurately aligning the plasma electrode and the rib with each other, and a relative displacement occurs. For this reason, there is a drawback that the discharge current varies greatly among the plasma chambers 10. For example, focusing on the pair of anode electrode AC and cathode electrode KR, the discharge current of the plasma chamber 10R becomes large because the cathode portion is largely exposed. On the other hand, another pair of cathode electrodes KL,
Focusing on the anode electrode AC, the discharge area of the plasma chamber 10L also decreases because the exposed area of the cathode portion is relatively small. On the other hand, in the embodiment of the present invention shown in FIG. 8, all the cathode electrodes K have basically the same exposed area, and there is an advantage that the variation of the discharge current among the plasma chambers is small. . Further, in the comparative example of FIG. 10, if discharge concentration occurs on the protrusion P of the cathode electrode KR, for example,
Unlike the structure shown in FIG. 8, there is nothing to block, so there is a drawback that discharge concentration is increased and operation becomes unstable.

FIG. 11 is a schematic sectional view showing still another embodiment of the plasma addressed display device according to the present invention. Basically, it has the same structure as that of the embodiment shown in FIG. 7, and corresponding parts are given corresponding reference numerals to facilitate understanding. However, for the sake of explanation, the cut surface is arranged to be parallel to the plasma electrode 7 unlike FIG. The difference from the embodiment shown in FIG. 7 is that an RGB three primary color filter 31 is provided corresponding to the signal electrode D in order to perform color display. A black stripe 32 is provided at the boundary between the RGB primary color filters 31 in order to increase the contrast. The thickness of the color filter is exaggerated in order to make it easier to see, but it is actually a thin film. On the other hand, the stripe-shaped ribs 8 parallel to the signal electrodes D are arranged in alignment with the black stripes 32, respectively. However, the arrangement pitch LP of the ribs 8 is R
GB three primary color filter 31 repeated array pitch F
It has a non-integer multiple relationship with P. In this example, LP is FP 2
It is set to / 3. With this configuration, it is possible to effectively prevent viewing-angle-dependent color shading. For example, considering the case where the illumination light is incident from the diagonally left rear as shown by the arrow 33, the G color filter is blocked by the first rib 8 counting from the left. The second rib blocks the R filter. The third rib blocks the B filter. In this way, the eclipse of the incident light occurs on average for each of the RGB three primary color filters, and so-called color shading does not occur.

FIG. 12 shows a modification of the embodiment shown in FIG. Although they have basically the same structure, the arrangement pitch LP of the ribs 8 is set to 1/3 which is a non-integer multiple of the repeating arrangement pitch FP of the color filter in this example. In this example, as shown by the arrow 33, the light incident from the left oblique rear side is substantially equally divided by the ribs 8, and an imbalance does not occur between the RGB three primary color filters.

FIG. 13 shows a comparative example for reference. In this comparative example, the arrangement pitch LP of the ribs 8 is set equal to the repeating arrangement pitch FP of the three primary color filters 31. Therefore, only the G color filter always has a shadow with respect to the light incident from the diagonally left rear. In other words, RGB
Since the intensity of only the G component in the display of the three primary colors becomes weak, color shading occurs. Generally, the arrangement pitch L of the ribs 8
If P is set to an integral multiple of the repeating array pitch FP of the three primary color filters, color shading becomes remarkable, which is not preferable.

[0029]

As described above, according to the present invention, since the plasma electrode is formed by the printing method, the electric resistance becomes smaller than the conventional one. Therefore, even if the area is increased, the voltage drop can be effectively suppressed and stable plasma discharge can be performed. Unlike the conventional method, the printing method is used, which is advantageous for manufacturing a large-area display device and has an effect of reducing manufacturing cost. Further, similarly, an opaque insulating stripe pattern is formed so as to be orthogonal to the plasma electrodes by a printing method so as to have a gap control function of the plasma cell. Therefore, there is an effect that the manufacturing process is simpler than the conventional one. Further, since the stripe pattern is printed orthogonally to the plasma electrode, the alignment accuracy of the print mask is rough and the workability is excellent. In addition, by forming the ribs with a flat and continuous top surface of the insulating stripe pattern, the plasma cell can be partitioned and the plasma discharge can be made stable and uniform as compared with the conventional case. Further, when the RGB three primary color filters are provided in alignment with the signal electrodes, the rib shading pitch is set to be a non-integer multiple of the repeating primary pitch of the three primary color filters to effectively prevent color shading. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a plasma addressed display device according to the present invention.

FIG. 2 is a cross-sectional view of the display device shown in FIG. 1 taken along line AA.

FIG. 3 is a schematic perspective view showing an arrangement of plasma electrodes and stripe patterns, which are characteristic elements of the present invention.

4 is a schematic block diagram showing an example of a drive circuit used in the display device shown in FIGS. 1 and 2. FIG.

5 is a schematic diagram in which pixels of the display device shown in FIGS. 1 and 2 are cut out and shown. FIG.

FIG. 6 is a partially cutaway perspective view showing an example of a conventional plasma addressed display device.

FIG. 7 is a schematic cross-sectional view showing another embodiment of the plasma addressed display device according to the present invention.

FIG. 8 is a pattern plan view of the embodiment shown in FIG.

FIG. 9 is a schematic cross-sectional view of a plasma addressed display device as a comparative example.

10 is a plan view showing a pattern shape of the plasma addressed display device shown in FIG.

FIG. 11 is a schematic cross-sectional view showing still another embodiment of the plasma addressed display device according to the present invention.

FIG. 12 is a sectional view showing a modification of the embodiment shown in FIG.

FIG. 13 is a schematic sectional view showing a comparative example of a plasma addressed display device.

[Explanation of symbols]

 1 Liquid Crystal Cell 2 Plasma Cell 3 Dielectric Partition 4 Substrate 5 Liquid Crystal Layer 6 Substrate 7 Plasma Electrode 8 Stripe Pattern (Rib) 9 Protrusion 10 Plasma Chamber 31 Color Filter 32 Black Stripe A Anode D Signal Electrode K Cathode

Claims (5)

[Claims] 1. A first substrate having a plurality of first electrodes that are substantially parallel to each other along a predetermined main surface, and a first substrate that is disposed so as to face the first substrate and that follows the predetermined main surface. A second substrate having a plurality of second electrodes printed substantially orthogonal to the electrodes and parallel to each other, and an opaque insulating stripe pattern printed so as to be orthogonal to the second electrodes; An electro-optical material layer interposed between two substrates, and a plasma chamber for enclosing the ionizable gas, which is provided between the electro-optical material layer and the second substrate. The gas is selectively ionized by the discharge between the electrodes, and the electro-optical material layer located at the intersection of the first electrode and the discharge region is driven by using the localized discharge region of the ionized gas as a scanning unit. The configured plasma address display device. 2. The plasma address display device according to claim 1, wherein the second electrode is a nickel thick film electrode, and the insulating stripe pattern is a black glass thick film. 3. A dielectric partition plate is interposed so as to be in contact with the electro-optical material layer, and the insulating stripe pattern has a flat and continuous top surface and is in contact with and supported by the dielectric partition plate. The plasma addressed display device according to claim 1, wherein the ribs are formed by a rib. 4. The first substrate comprises a plurality of first parallel substrates.
4. The plasma addressed display device according to claim 3, further comprising a repeating array of RGB three primary color filters provided corresponding to the electrodes. 5. The plasma address display device according to claim 4, wherein the ribs are arranged at a pitch that is a non-integer multiple of the pitch of the repeating arrangement of the RGB three primary color filters.