JPH07319401A - Discharge panel and plasma address display device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the mechanical strength of partition walls and prevent them from breaking. [Structure] A plurality of anode electrodes 9A and cathode electrodes 9K forming a plasma electrode and extending in the column direction are alternately formed in a stripe shape on an inner main surface of a lower substrate of a plasma cell 2. A partition wall 10 having a predetermined width is formed on each of the upper surfaces of the electrodes 9A and 9K at substantially the center thereof so as to extend along the electrodes. The top of each partition 10 is brought into contact with the lower surface of the intermediate sheet,
The gap between the lower substrate and the intermediate sheet is kept constant. The lower substrate and the intermediate sheet are airtightly bonded to each other by using the frit seal material 11, an ionizable gas is sealed in the gap, and a plurality of discharge channels 12 separated by the partition wall 10 and extending in the column direction are formed in stripes. To form. The end portions of the respective partition walls 10 are connected in a single stroke by the connecting wall portions 21, and the partition walls 1
0 improves the mechanical strength of the whole and prevents the partition wall 10 from being broken by a polishing process or the like. The space of each discharge channel is not isolated and does not interfere with the exhaust or gas filling process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge panel having striped discharge barriers, a plasma cell having striped discharge barriers, and an electro-optical display cell, which are laminated with an intermediate sheet interposed therebetween. And a plasma address display device.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a plasma address display device in which a plasma cell and an electro-optical display cell are laminated with an intermediate sheet interposed therebetween. 2 and 3 show a configuration example of the plasma addressed display device 100.

In FIG. 1, a plasma addressed display device 100 comprises an electro-optical display cell 1, a plasma cell 2 and
Intermediate sheet (dielectric sheet) 3 interposed between them
It has a flat panel structure in which and are laminated. The intermediate sheet 3 is made of thin glass plate or the like. The intermediate sheet 3 needs to be as thin as possible in order to drive the display cell 1, and is formed to have a plate thickness of, for example, about 50 μm.

The display cell 1 is composed of an upper glass substrate (upper substrate) 4. On the inner main surface of the upper substrate 4, a plurality of data electrodes 5 made of a transparent conductive material and extending in the row direction are formed in parallel in the column direction with a predetermined space therebetween. The upper substrate 4 is joined to the intermediate sheet 3 with a spacer 6 holding a predetermined gap. A liquid crystal layer 7 is formed by filling the gap between the upper substrate 4 and the intermediate sheet 3 with liquid crystal as an electro-optical material. Here, the size of the gap between the upper substrate 4 and the intermediate sheet 3 is, for example, 4 to 10 μm, and is kept uniform over the entire display surface. Note that other than liquid crystal can be used as the electro-optical material.

On the other hand, the plasma cell 2 is constructed by using a lower glass substrate (lower substrate) 8. On the inner main surface of the lower substrate 8, a plurality of anode electrodes 9A and cathode electrodes 9K that form plasma electrodes and extend in the column direction are formed in parallel in the row direction while alternately maintaining a predetermined interval. Further, a partition wall 10 having a predetermined width is formed so as to extend along the respective electrodes at substantially the center of each upper surface of the anode electrode 9A and the cathode electrode 9K. And each partition 10
Is abutted on the lower surface of the intermediate sheet 3, and the size of the gap between the lower substrate 8 and the intermediate sheet 3 is kept constant.

Further, the frit seal material 1 using a low melting point glass or the like is provided along the periphery of the lower substrate 8.
1 is provided, and the lower substrate 8 and the intermediate sheet 3 are hermetically joined. An ionizable gas is filled in the gap between the lower substrate 8 and the intermediate sheet 3. As the gas to be sealed, for example, helium, neon, argon, or a mixed gas thereof is used.

In the gap between the lower substrate 8 and the intermediate sheet 3, a plurality of discharge channels (spaces) 12 which are separated by each partition wall 10 and extend in the column direction are formed in parallel in the row direction.
That is, the discharge channel 12 is formed so as to be orthogonal to the data electrode 5. Each data electrode 5 serves as a column driving unit, and each discharge channel 12 serves as a row driving unit.
3 is defined.

In the above structure, when a predetermined voltage is applied between the anode electrode 9A and the cathode electrode 9K corresponding to the predetermined discharge channel 12, the discharge channel 12 is discharged.
The gas in the area is selectively ionized to generate plasma discharge, and the inside thereof is maintained at substantially the anode potential. When a data voltage is applied to the data electrode 5 in this state, the data voltage is written to the liquid crystal layers 7 of the plurality of pixels 13 arranged in the column direction corresponding to the discharge channel 12 via the intermediate sheet 3. When the plasma discharge ends, the discharge channel 12 becomes a floating potential, and the data voltage written in the liquid crystal layer 7 of each pixel 13 is held until the next writing period (for example, one field or one frame later). In this case, the discharge channel 12 functions as a sampling switch, and the liquid crystal layer 7 of each pixel 13 functions as a sampling capacitor.

Since the liquid crystal is operated by the data voltage written in the liquid crystal layer 7 of each pixel 13, display is performed in pixel units. Therefore, as described above, the liquid crystal layer 7 of the plurality of pixels 13 arranged in the column direction by generating the plasma discharge.
A two-dimensional image can be displayed by sequentially scanning the discharge channels 12 for writing the data voltage in the row direction.

[0010]

In the plasma addressed display device described above, the partition walls 10 are formed in stripes as shown in FIG. Although not described above, the partition wall 10 is formed with a size of, for example, a width of 100 μm and a height of 200 μm, and is formed as thin as possible in order to enlarge the effective display portion. Therefore, the partition wall 10 is weak in the direction orthogonal to the longitudinal direction (illustrated by the arrow x in FIG. 5), and there is a problem that it is easily broken by contact or the like in a later step.

Further, although the partition walls 10 are laminated by, for example, a screen printing method, which is not described above, since the height size is relatively large as described above, the heights of the respective partition walls 10 vary. . When such variation occurs, in the state where the top of the partition wall 10 and the intermediate sheet 3 are in contact with each other, the surface of the intermediate sheet 3 is wavily formed, and the flatness cannot be maintained, and the thickness of the liquid crystal layer 7 on the display cell 1 side. Are not uniform and display quality is significantly impaired. Therefore, conventionally, the partition walls 10 have been thickly printed and baked in advance, and then a polishing process is performed to flatten the tops of the respective partition walls 10. As described above, the partition wall 10 is weak in the direction orthogonal to the longitudinal direction, and the partition wall 10 is processed by polishing.
Could be destroyed.

According to the experiment, the edge of the partition wall 10 is most easily broken. This is because the partition walls 10 themselves are less effective in supporting each other at the ends. Therefore, as the length of the partition wall 10 becomes shorter, it becomes easier to break.

Therefore, an object of the present invention is to improve the mechanical strength of the partition wall so that the partition wall is not easily broken.

[0014]

A first aspect of the present invention is a discharge panel having a plurality of stripe-shaped discharge barrier ribs, and a first discharge barrier rib and a second discharge barrier rib adjacent to the first discharge barrier rib. 3 discharge barrier ribs, one end of the first discharge barrier ribs and the second
A first connecting wall portion connecting the corresponding end portions of the discharge barrier ribs, and a second connecting wall portion connecting the other end portion of the first discharge barrier ribs and the corresponding end portion of the third discharge barrier ribs. I have.

A second invention is a plasma address display device in which a plasma cell and an electro-optical display cell are laminated via an intermediate sheet, and the plasma cell has a stripe-shaped discharge partition wall, and the plasma cell is the first. Discharge barrier of
Second and third discharge barrier ribs adjacent to the first discharge barrier rib, a first connection wall portion connecting one end portion of the first discharge barrier rib and a corresponding end portion of the second discharge barrier rib, and It has a second connecting wall portion that connects the other end portion of one discharge barrier rib and the corresponding end portion of the third discharge barrier rib. The electro-optical display cell is configured to include, for example, a liquid crystal layer as an electro-optical material layer.

[0016]

In the first and second aspects of the invention, one end of the first discharge barrier rib is connected to the corresponding end of the second discharge barrier rib adjacent to the one side with the connecting wall portion, and the first discharge barrier rib is connected. Since the other end of the barrier rib is connected to the corresponding end of the third discharge barrier rib adjacent to the other side by the connecting wall portion, the mechanical strength of the entire discharge barrier rib can be improved, and it is possible to improve the mechanical strength of the discharge barrier rib. It is possible to prevent destruction of the discharge barrier ribs. Further, since the discharge barrier ribs are connected in a so-called one-stroke form, the spaces of the discharge channels divided by the discharge barrier ribs are not isolated, and it is possible to avoid obstructing the process of exhausting or gas filling. Further, since the mechanical strength of the entire discharge barrier ribs can be improved, the discharge barrier ribs can be made thinner and the effective operation portion can be expanded, and the image quality can be improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. This example is an example of a plasma addressed display device. In FIG. 1, parts corresponding to those in FIG. 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

In this example, the first end 10a and the second end 10b of each partition 10 correspond to the first and second partition 10 adjacent to each partition 10 by the connecting wall 21. Are sequentially connected to the ends. That is, as shown in the drawing, when there are up to the th partition wall 10, the end portion 10a of the th partition wall 10 is connected to the end portion 10a of the th partition wall by the connecting wall portion 21, and the end of the th partition wall 10 is connected. The portion 10b is connected to the end portion 10b of the th partition wall 10 by the connecting wall portion 21, and the end portion 10a of the th partition wall 10 is connected.
Is the end portion 10a of the partition wall 10 with the connecting wall portion 21.
, And so on until the second partition wall 10 is connected in a so-called one-stroke form. Connection wall part 2
1 is formed of the same material as the partition wall 10 in the same step.

As is clear from the figure, as for the second and tenth partition walls 10 located at both ends, since only one adjacent partition wall 10 exists, one end portion (end of the second partition wall 10) Part 10b, th partition wall 10
Then, the end of the adjacent partition wall 10 is not connected to the end 10a). The present example is configured as described above, and the others are configured similarly to the example of FIG.

In this example, the ends 10a of each partition wall 10 are
And 10b are partition walls 1 adjacent to each partition wall 10, respectively.
Since they are sequentially connected to the corresponding end portions of 0 by the connecting wall portions 21, the mechanical strength of the entire partition wall 10 can be significantly improved as compared with the conventional one. Therefore, it is possible to prevent the partition walls 10 from being broken by the polishing process for flattening the tops of the respective partition walls 10. Thereby, in order to prevent the partition wall 10 from being damaged by the polishing process, the partition wall 1
It is not necessary to perform a polishing process after filling a reinforcing material such as a resin between 0s, and the manufacturing process can be simplified.

Further, since the barrier ribs 10 are connected in a so-called one-stroke form, the respective discharge channels 12 divided by the barrier ribs.
Space is not isolated and does not interfere with the exhaust or gas filling process. Furthermore, since the mechanical strength of the entire partition 10 can be significantly improved, the partition 10
Can be made thinner to expand the effective operation portion, and the image quality can be improved.

In the above embodiment, all of the partition walls 10 are connected as one body, but it is also possible to connect only some of the partition walls 10 and regarding some of the partition walls 10. Can obtain the same effect as that of the above-mentioned embodiment.

Further, although the above-mentioned embodiment shows an example of the plasma addressed display device, in other discharge panels such as a plasma display having stripe-shaped discharge barrier ribs, one end of each barrier rib is drawn. Needless to say, it is possible to obtain the same effects as those of the above-described embodiment by connecting in a writing manner.

[0024]

According to the first and second aspects of the present invention, one end of the first discharge barrier is connected to the corresponding end of the second discharge barrier adjacent to one side by the connecting wall. Since the other end of the first discharge barrier is connected to the corresponding end of the third discharge barrier adjacent to the other side by the connecting wall, the mechanical strength of the entire discharge barrier can be significantly improved. It is possible to prevent the discharge barrier ribs from being broken by the polishing process or the like. Moreover, since the discharge barrier ribs are connected in a so-called one-stroke form, the spaces of the discharge channels divided by the discharge barrier ribs are not isolated, and the process of exhausting or gas filling is not hindered. Further, since the mechanical strength of the entire discharge partition can be improved, the discharge partition can be made thinner to expand the effective operation portion, and the image quality can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a main configuration of a plasma addressed display device as an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration example of a plasma address display device.

FIG. 3 is a cross-sectional view showing a configuration example of a plasma addressed display device.

FIG. 4 is a diagram showing an arrangement of data electrodes, plasma electrodes, and discharge channels.

FIG. 5 is a diagram showing a configuration of a partition wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electro-optical display cell 2 Plasma cell 3 Intermediate sheet 4 Upper glass substrate (upper substrate) 5 Data electrode 6 Spacer 7 Liquid crystal layer 8 Lower glass substrate (lower substrate) 9A Anode electrode 9K Cathode electrode 10 Partition wall 11 Frit seal Material 12 Discharge channel 13 Pixel 21 Connection wall 100 Plasma address display device

Claims (3)

[Claims] 1. A discharge panel having a plurality of stripe-shaped discharge barrier ribs, a first discharge barrier rib, second and third discharge barrier ribs adjacent to the first discharge barrier rib, and the first discharge barrier rib. A first connecting wall portion connecting one end of a discharge barrier to a corresponding end of the second discharge barrier, another end of the first discharge barrier, and a corresponding end of the third discharge barrier. And a second connection wall portion for connecting the discharge panel. 2. A plasma address display device in which a plasma cell and an electro-optical display cell are laminated with an intermediate sheet interposed therebetween, and the plasma cell has a stripe-shaped discharge barrier. The plasma cell is a first discharge cell. A barrier rib, second and third discharge barrier ribs adjacent to the first discharge barrier rib, and a first connection for connecting one end of the first discharge barrier rib and a corresponding end of the second discharge barrier rib. A plasma address display device comprising: a wall portion; and a second connection wall portion that connects the other end portion of the first discharge barrier rib and the corresponding end portion of the third discharge barrier rib. 3. The plasma addressed display device according to claim 2, wherein the electro-optical display cell is configured to have a liquid crystal layer as an electro-optical material layer.