JP2002324490A - Ac type plasma display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an AC type plasma display device which is free from degradation of light-transmitting property of a light emitting cell, free from cost-up, can reduce power consumption and improve luminous efficiency, displaying quality, in a structure in which each transparent electrode is isolated per light emitting cell. SOLUTION: In a disclosed AC type plasma display device 10, a scanning electrode 3 and a maintenance electrode 4 formed in parallel on the opposed surface of a first transparent substrate 1 in a front substrate 20 to a second transparent substrate 11 are constituted of transparent electrodes 3A, 4A consisting of transparent conductors such as indium-tin oxide, tin oxide, and bus electrodes (trace electrodes) 3B, 4B, consisting of silver or the like having a lower resistance than each transparent electrode 3A or 4A to reduce the line resistance. While each transparent electrode 3A or 4A is arranged in isolation for each light emitting cell 16 on a back substrate 30 partitioned by each barrier wall 14. Each transparent electrode 3A or 4A in each light emitting cell 16 is connected mutually by a connecting transparent electrode 17 formed of the same conductor as each transparent electrode 3A or 4A and straddling over each barrier wall 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an AC (Alternat)
In particular, the present invention relates to a plasma display device, and more specifically, a scan electrode and a sustain electrode formed in parallel on a front substrate are respectively composed of a transparent electrode and a bus electrode,
AC in which each transparent electrode is formed separately for each light emitting cell
The present invention relates to a plasma display device.

[0002]

2. Description of the Related Art Plasma display devices are roughly classified into three types: an AC type using AC as a driving power source, a DC type using DC (Direct Current), and a hybrid type using both AC and DC. The AC type, which has a relatively simple structure and is easy to enlarge the screen, is generally employed.

In this AC type plasma display device, in particular, a row electrode pair including a scanning electrode and a sustain electrode (common electrode) is formed in parallel with a surface of a front substrate (scanning substrate) facing a rear substrate, and a back electrode is formed. A column electrode (data electrode) is formed on the substrate so as to be orthogonal to the row electrode pair, and a data cell (address electrode) and a scanning electrode are driven by a driving voltage to emit light (display). The three-electrode surface-discharge type is configured to perform a write discharge for selecting a scan electrode and a sustain discharge by driving a scan electrode and a sustain electrode to perform a sustain discharge by surface discharge of a selected light emitting cell.
Since high-energy ions generated at the time of surface discharge on the front substrate do not impact and deteriorate the phosphor formed on the rear substrate, they are widely used because they can extend the life.

FIG. 11 is a plan view showing a configuration of a main part of a conventional AC type three-electrode surface discharge type AC plasma display. In the plasma display device, as shown in FIG. 11, scanning is performed by forming a pair of row electrodes on a surface of a front substrate (not shown) made of a transparent substrate facing a rear substrate in parallel along a row direction H of a screen. The electrode 51 and the sustain electrode 52 are formed via a surface discharge gap 53. Then, the scanning electrode 51 and the sustain electrode 52 are respectively
A, 52A and each transparent electrode 51A formed on a part of each transparent electrode 51A, 52A to reduce line resistance.
A, bus electrode (trace electrode) 51 having lower resistance than 52A
B, 52B. On the other hand, on a surface of a rear substrate (not shown) made of a transparent substrate facing the front substrate, data electrodes 54 forming column electrodes are formed in parallel along the column direction V of the screen. Similarly, it is arranged so as to be surrounded by a plurality of partition walls 55 formed along the column direction V. The plurality of light emitting cells 56 are individually partitioned by each wall 55.

In the AC-type plasma display having the above configuration, the data electrode 54 and the scanning electrode 51 are driven by applying a driving voltage (high-voltage AC pulse) to emit light from a plurality of light-emitting cells. While performing a write discharge for selecting a cell, the scan electrode 51 and the sustain electrode 52 are similarly driven by applying a drive voltage to perform a sustain discharge by surface discharge of the selected light emitting cell, thereby forming an arbitrary image. Is displayed on the screen. here,
The area of each of the transparent electrodes 51A and 52A constituting the scan electrode 51 and the sustain electrode 52 has a great influence on the power consumption and the luminous efficiency of the AC type plasma display device.

From such a viewpoint, in the conventional AC plasma display device having the configuration shown in FIG. 11, the transparent electrodes 51A and 52A of the scan electrode 51 and the sustain electrode 52 are commonly shared over a plurality of light emitting cells 56. Since they are arranged, they are formed with a large area. Therefore, when the AC type plasma display device is driven, current is also supplied to the transparent electrodes of the light emitting cells other than the selected light emitting cell, so that the power consumption is increased and the light emission efficiency is reduced.

Therefore, in order to reduce power consumption and improve luminous efficiency, as shown in FIG. 12, each transparent electrode 51A of a scan electrode 51 and a sustain electrode 52 is provided for each light emitting cell 56.
An AC-type plasma display device configured to isolate 52A has been provided. FIG.
In the second AC plasma display device, the transparent electrodes 51A and 52A are formed separately for each light emitting cell 56, so that only the transparent electrode of the selected light emitting cell is energized during driving. . In FIG. 12, illustration of the data electrodes is omitted.

In recent AC plasma display devices, there is an increasing demand for further reduction in power consumption and improvement in luminous efficiency as the screen size increases. As a result, as shown in FIG.
A and 52A are formed by elongated surface discharge portions 51a and 52a for forming the surface discharge gap 53 and these portions 51a and 5a.
From the elongated support portions 51b and 52b that support
A configuration in which each of the surface discharge portions 51a and 52a and each of the support portions 51b and 52b are formed as fine as possible has been provided.

However, in the conventional AC type plasma display device as shown in FIG.
Since 1a, 52a and the supporting portions 51b, 52b are formed to have a fine width, there is a disadvantage that disconnection is easily caused by some cause. For example, the surface discharge portions 51a and 52a and the support portions 51b and 52b are formed by a well-known photolithography method. However, if dust adheres to the front substrate at the time of the exposure, the dust after development is affected by the dust. Disconnection occurs in the pattern. Or,
Even if the surface discharge portions 51a and 52a and the support portions 51b and 52b having a normal pattern are formed by the photolithography method, foreign substances are subsequently formed on the surface discharge portions 51a and 52a and the support portions 51b and 52b from the surroundings. Is attached, a disconnection occurs similarly due to the influence of foreign matter. For example, in FIG. 13, the light emitting cell 56 in which the disconnection portion 57 has occurred is present in the support portion 52b which is a part of the transparent electrode 52A of the sustain electrode 52.

As described above, the scanning electrode 51 and the electrode electrode 52
When a part of each of the transparent electrodes is disconnected, this causes a defect, and a driving voltage is not applied to each of the surface discharge parts 51a, 52a from each of the support parts 51b, 52b. In this case, a normal discharge is not performed, so that even the selected light emitting cells do not emit light. In particular, since a plasma display device uses a large screen display as a selling point of a product, it is desired to manufacture a screen area exceeding 1 m ² without defects, for example. However, when normal discharge is not performed, Since it is difficult to display a high-definition image, display quality deteriorates. Further, the manufacturing cost is increased because the manufacturing yield is reduced.

As described above, even if a part of each of the transparent electrodes of the scanning electrode and the sustaining electrode formed with a fine width is disconnected, a normal discharge is performed in the selected light emitting cell while preventing the influence of the disconnection. An AC-type plasma display device configured to operate as described above is disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-251739. As shown in FIG. 14, the AC-type plasma display device has an elongated surface discharge for forming a surface discharge gap 63 by forming each transparent electrode 61A, 62A of a scan electrode 61 and a sustain electrode 62 for each light emitting cell 60. Part 6
1a, 62a and elongated support portions 6 for supporting these portions.
1b, 62b, and each bus electrode 61B, 62b along each partition 65 adjacent to each data electrode 62.
The auxiliary pattern 67 obtained by extending B is connected to each surface discharge portion 61a,
62a. According to such a configuration, for example, even when the light emitting cell 60 in which the disconnection portion 68 is present exists in the support portion 62b which is a part of the transparent electrode of the sustain electrode 62, the conduction path is secured by the auxiliary pattern 67. As a result, normal discharge is performed in the selected light emitting cell while preventing the influence of disconnection.

[0012]

SUMMARY OF THE INVENTION Incidentally, Japanese Patent Application Laid-Open
In the conventional AC plasma display device described in Japanese Patent Application Laid-Open No. 0-251739, since the auxiliary pattern is formed of the same conductor as the light-shielding bus electrode, there is a problem that the light transmittance of the light emitting cell is reduced. That is, in the AC type plasma display device described in the above publication, in FIG. 14, the auxiliary pattern 67 is formed by the same conductor as the bus electrodes 61B and 62B made of a light-shielding Cr-Cu-Cr laminated metal layer. , This auxiliary pattern 6
7 are extended into the light emitting cell 60, and the surface discharge portions 61a, 61
2a, a part of the light transmitted through the light emitting cell 60 is blocked by the presence of the auxiliary pattern 67, so that the light transmittance of the light emitting cell 60 is reduced.

In the conventional AC plasma display device described in Japanese Patent Application Laid-Open No. 2000-251739, since the auxiliary patterns are arranged along the partition walls of the rear substrate, high processing accuracy is required for patterning the auxiliary patterns. Therefore, there is a problem that the manufacturing method is disadvantageous. That is, in the method of manufacturing an AC type plasma display device described in the above publication, when the auxiliary pattern 67 is patterned on the front substrate at the same time as the bus electrodes 61B and 62B in FIG. Is restricted along the partition wall 65, so that the patterning accuracy must be increased, and an increase in cost cannot be avoided.

The present invention has been made in view of the above circumstances, and in a configuration in which transparent electrodes are arranged so as to be isolated for each light emitting cell, the light transmittance of the light emitting cell is not reduced and the cost is increased. It is an object of the present invention to provide an AC plasma display device capable of reducing power consumption and improving luminous efficiency without accompanying the display, and further improving display quality, and a method of manufacturing the same.

[0015]

According to a first aspect of the present invention, a discharge gas space is formed between a front substrate and a rear substrate, and the discharge gas space is opposed to the rear substrate of the front substrate. The scanning electrode and the sustaining electrode formed in parallel with the surface to be formed are each composed of a transparent electrode and a bus electrode having a lower resistance than the transparent electrode, and each transparent electrode is formed separately for each light emitting cell. In the plasma display device, the transparent electrodes of the plurality of light emitting cells are formed over the plurality of light emitting cells and are electrically connected to each other by a transparent electrode for connection made of the same conductor as the transparent electrode. It is characterized by:

According to a second aspect of the present invention, there is provided the AC type plasma display device according to the first aspect, wherein the transparent electrode is connected to the bus electrode commonly formed over a plurality of the light emitting cells. Elongated support part,
An elongated surface discharge portion connected to the support portion to form a surface discharge gap.

According to a third aspect of the present invention, there is provided the AC type plasma display device according to the first or second aspect, wherein the connection transparent electrode is formed in parallel with the bus electrode. .

According to a fourth aspect of the present invention, there is provided the AC type plasma display device according to the third aspect, wherein the connecting transparent electrode is formed in parallel with the first connecting transparent electrode and the second connecting transparent electrode. And a transparent electrode for use.

According to a fifth aspect of the present invention, there is provided the AC type plasma display device according to the fourth aspect, wherein
The second connection transparent electrode is characterized by being formed to have substantially the same width.

According to a sixth aspect of the present invention, there is provided a scan electrode and a sustain electrode in which a discharge gas space is formed between a front substrate and a rear substrate, and which is formed in parallel with a surface of the front substrate facing the rear substrate. The method for manufacturing an AC type plasma display device, wherein the electrodes are each composed of a transparent electrode and a bus electrode having a lower resistance than the transparent electrode, and each transparent electrode is formed separately for each light emitting cell. A first step of forming a photoresist film on a main surface of the substrate facing the back substrate; patterning the photoresist film into a desired shape to form the scanning electrodes on the main surface of the front substrate; A second step of exposing only a region where a sustain electrode is to be formed, a third step of forming a transparent conductor film over the entire surface of the front substrate, and the photoresist remaining on the front substrate And by simultaneously removing the transparent conductor film covering the photoresist film, leaving the transparent conductor film only in the exposed area of the main surface, the transparent electrode constituting the scan electrode and the sustain electrode is removed. And forming a connection transparent electrode for electrically connecting the plurality of transparent electrodes to each other over the plurality of light emitting cells at the same time.

According to a seventh aspect of the present invention, there is provided a method of manufacturing an AC type plasma display device according to the sixth aspect, wherein after the fourth step, the scan electrodes and the sustain electrodes are formed on the transparent electrodes. The method is characterized by including a fifth step of partially forming a bus electrode made of a conductor film.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. The description will be made specifically using an embodiment. First Embodiment FIG. 1 is a perspective view showing a configuration of an AC type plasma display device according to a first embodiment of the present invention, FIG. 2 is a plan view showing a configuration of a main part of the AC type plasma display device,
FIG. 3 is an enlarged plan view showing a configuration of a main part of the AC plasma display, FIG. 4 is a plan view illustrating an effect of the AC plasma display, and FIG. 5 is a main part of the AC plasma display. And FIG. 6 is a process chart showing another method of forming the main part of the AC type plasma display in the order of steps. The AC type plasma display device 10 of this example has a basic configuration in which a discharge gas space 40 is formed between a front substrate 20 and a rear substrate 30 as shown in FIG.

The front substrate 20 includes a first transparent substrate 1 made of glass or the like, and a surface discharge gap 2 on a surface of the first transparent substrate 1 facing the rear substrate 30 in parallel along the row direction H of the screen. The scanning electrode 3 and the sustain electrode 4 formed through the first electrode and a first electrode formed so as to cover the scanning electrode 3 and the sustain electrode 4.
, A color filter layer 6 formed so as to cover the first transparent dielectric layer 5, a black matrix layer 7 formed between the color filter layers 6, A second transparent dielectric layer 8 is formed so as to cover the black matrix layer 7, and a protective layer 9 is formed so as to cover the second transparent dielectric layer 8.

The rear substrate 30 includes a second transparent substrate 11 made of glass or the like, and data electrodes formed on the surface of the second transparent substrate 11 facing the front substrate 20 in parallel along the column direction V of the screen. 12, a white dielectric layer 13 formed so as to cover the data electrode 12, and a partition wall formed so as to cover the white dielectric layer 13 and formed in parallel with the data electrode 12 to individually partition a plurality of light emitting cells. And a phosphor layer 15 formed to cover the side surfaces of the white dielectric layer 13 and the partition walls 14 in each light emitting cell.

FIG. 2 is a plan view showing a configuration of a main part of the AC type plasma display device 10 of FIG. AC
As shown in FIG. 2, the scanning type plasma display device 10 has a scanning electrode formed on a surface of the front substrate 20 facing the second transparent substrate 11 of the first transparent substrate 1 in parallel with the row direction H. 3 and sustain electrodes 4 are made of indium tin oxide
(Indium Tin Oxide: ITO), transparent electrodes 3A and 4A made of a transparent conductor such as tin oxide (SnO ₂ ), and transparent electrodes formed on a part of each of the transparent electrodes 3A and 4A to reduce line resistance. Bus electrodes (trace electrodes) 3B and 4B made of silver (Ag) or the like having a lower resistance than 3A and 4A. Further, each of the transparent electrodes 3A, 4A is
The light-emitting cells 16 are isolated from each other by being separated by the partition walls 14 of 0. Here, each transparent electrode 3A, 4A of each light emitting cell 16
A is formed over each partition 14 and each transparent electrode 3 is formed.
A and 4A are electrically connected to each other by a connection transparent electrode 17 made of the same conductor.

FIG. 3 is an enlarged plan view showing the configuration of the main part of the AC type plasma display. The width W1 of the connection transparent electrode 17 is 30 to 100 μm, the width W2 of the surface discharge gap 2 is 50 to 100 μm, each transparent electrode 3A,
The width W3 of 4A is 200 to 400 μm, and each bus electrode 3B,
4B has a width W4 of 10 to 15 μm, and each bus electrode 3B, 4B
And the distance L1 between each connection transparent electrode 17 is 50-100 μm.
m, tip of each transparent electrode 3A, 4A and transparent electrode 1 for each connection
The distance L7 is set to 20 to 30 μm. The thickness of each of the transparent electrodes 3A, 4A and each of the connecting transparent electrodes 17 is set to 0.1 to 0.2 μm.

As described above, by connecting the transparent electrodes 3A, 4A of the plurality of light emitting cells 16 to each other by the connecting transparent electrode 17, as shown in FIG. The energization path from 4B to each transparent electrode 4A is the first energization path P1 from the original bus electrode 4B of the light emitting cell 16 to the transparent electrode 4A, and the bus electrode 4B, the transparent electrode 4A of the left light emitting cell 16 and the transparent electrode 4A. A second current path P2 extending to the transparent electrode 4A of the light emitting cell 16 via the connection transparent electrode 17 and the light emission via the bus electrode 4B, the transparent electrode 4A and the connection transparent electrode 17 of the right light emitting cell 16 This means that three paths including the third current path P3 reaching the transparent electrode 4A of the cell 16 have been secured.

Therefore, according to this example, even if the original first energizing path P1 of the light emitting cell 16 is cut off due to the occurrence of the disconnection 18 in the transparent electrode 4A, the remaining second energizing path P1 is cut off.
By using the current path P2 and the third current path P3, the current path can be easily secured. Moreover, the connecting transparent electrode 17 is formed of each of the transparent electrodes 3A, 4A,
Since it is made of a transparent conductor such as ITO or tin oxide which is the same conductor as A, the transmittance of the light emitting cell 16 is not reduced. Further, even if the connection transparent electrode 17 is added,
Since the increase in the transparent electrode area due to this is small compared to the total electrode area, each transparent electrode 3A, 4A
The effect of reducing power consumption and improving luminous efficiency obtained by forming A in isolation can be obtained as it is.

The more effective the connecting transparent electrode 17 is, the farther away it is from the respective bus electrodes 3B, 4B of the respective transparent electrodes 3A, 4A. Further, each transparent electrode 3A,
In particular, when tin oxide is used as the transparent conductor constituting 4A and each connection transparent electrode 17, the characteristics are stable even when heat is applied in the manufacturing process, as compared with the case where ITO is used. have. Therefore, it is advantageous to use tin oxide particularly when heat treatment is performed.

Next, with reference to FIG. 5, a method of forming a main portion of the AC plasma display will be described in the order of steps. In this example, the method using the lift-off method (first
Will be described. First, as shown in FIG. 5A, the film thickness of glass or the like is 1.0 to 1.2 mm.
The first transparent substrate 1 is used to apply, for example, a negative-type photoresist to the main surface that is the surface facing the rear substrate 30 by a spin coating method, and then performs a drying process to apply a photoresist film having a predetermined thickness. 21 are formed.

Next, as shown in FIG.
The first transparent substrate 1 is exposed to ultraviolet light by using an exposure mask 23 having a desired pattern in which the pattern 2 is formed, and is exposed. Due to this exposure processing, the photoresist film 21A in an area corresponding to the light-shielding portion 22 becomes uncured,
It becomes soluble in alkaline developer. On the other hand, the photoresist film 21B in a region other than the light-shielding portion 22 is hardened and becomes insoluble in the alkaline developer.

Next, as shown in FIG. 5C, after the exposure mask 23 is removed, the first transparent substrate 1 is immersed in an alkali developing solution to perform a developing process. By this development process,
The photoresist film 21A in the uncured region is removed, and the region on the main surface where the scan electrode and the sustain electrode are to be formed is exposed, and the exposed surface 24 is formed.

Next, as shown in FIG. 5D, a tin oxide film 25 having a thickness of, for example, 0.1 to 0.2 μm is formed as a transparent conductor on the entire surface including the exposed surface 24 by a sputtering method.

Next, as shown in FIG. 5E, by removing the remaining photoresist film 21B, the tin oxide film 25 on the photoresist 21 is also removed at the same time, and the area of the exposed surface 24 is reduced. The transparent electrode 3A, 4A of the scanning electrode 3 and the sustain electrode 4 is formed so as to be isolated for each light emitting cell 16 by leaving only the oxide film tin film 25 corresponding to. Then, a connecting transparent electrode 17 for electrically connecting the plurality of transparent electrodes 3A, 4A is formed.

Next, a conductive film having a thickness of, for example, 0.1 to 0.2 μm is formed on the entire surface of the first transparent substrate 1 by sputtering.
After forming the silver film of m, the silver film is patterned so as to remain on a part of each of the transparent electrodes 3A, 4A, and the respective bus electrodes 3B,
4B is formed.

Thereafter, the ordinary steps are repeated, and as shown in FIG. 1, the first transparent dielectric layer 5, the color filter layer 6, the black matrix layer 7, the second transparent dielectric layer 8, By sequentially forming the protective layer 9 and the like, the front substrate 2
Complete 0. Similarly, as shown in FIG. 1, a second transparent substrate 11 is prepared, and a data electrode 12, a white dielectric layer 13, a partition 14, a phosphor layer 15, and the like are sequentially formed to form a rear surface. The substrate 30 is completed. Subsequently, the front substrate 20 is overlaid on the rear substrate 30 via a seal (not shown), and He (helium), Ne (neon), and Xe (xenon) are placed in the discharge gas space 40 between the substrates 20 and 30. The AC type plasma display device 10 is assembled by enclosing a discharge gas such as) alone or in a mixture.

According to the manufacturing method of the AC type plasma display device of this example, a known exposure method is used to replace the conventionally used exposure mask pattern with a connection transparent electrode pattern and a new exposure method. The connection transparent electrode 17 can be easily formed only by changing to the mask pattern. Also, in this example, AC
According to the method of manufacturing the plasma display device, the connection transparent electrode 17 may be formed so as to cross each of the adjacent light emitting cells 16, and is arranged along the partition formed on the rear substrate as in the related art. Since there is no such restriction, a very high patterning accuracy is not required. Therefore, an increase in cost can be avoided.

Next, another method of forming the main part of the AC type plasma display will be described in the order of steps with reference to FIG. In this example, a method using an etching method (a second manufacturing method) will be described. First, FIG.
As shown in FIG.
Using the first transparent substrate 1 of 1.2 mm, the rear substrate 30
Then, a tin oxide film 25 having a thickness of 0.1 to 0.2 μm is formed on the entire main surface by sputtering.

Next, as shown in FIG. 6B, for example, a positive type photoresist is applied to the entire surface by a spin coating method, and then a drying process is performed to form a photoresist film 26 having a predetermined thickness. Next, the first transparent substrate 1 is exposed to ultraviolet light using an exposure mask 23 having a desired pattern on which the light-shielding portion 22 is formed, and is exposed. By this exposure processing, the photoresist film 26A in the area corresponding to the light shielding portion 22 is hardened and becomes insoluble in the alkaline developer. On the other hand, the photoresist film 26B in a region other than the light-shielding portion 22 is uncured and becomes soluble in the alkaline developer. Next, after removing the exposure mask 23,
As shown in FIG. 6C, the first transparent substrate 1 is immersed in an alkaline developer to perform a development process. By this development processing, the photoresist film 26A in the cured region is left.

Next, as shown in FIG. 6D, an etching process such as wet etching or dry etching is performed by using the remaining photoresist film 26A as a mask, so that the tin oxide film 25 in an unnecessary region is removed. Is removed.
Thereby, each transparent electrode 3 of the scanning electrode 3 and the sustain electrode 4
A, 4A are formed so as to be isolated for each light emitting cell 16,
A connection transparent electrode 17 for electrically connecting the plurality of transparent electrodes 3A, 4A simultaneously over a plurality of light emitting cells 16.
To form Next, after a silver film, for example, is formed on the entire surface of the first transparent substrate 1 by a sputtering method, the silver film is
Each bus electrode 3B, 4B is formed by patterning so as to leave a part of A, 4A. After this, the first
As in the case of the manufacturing method described above, the normal process is repeated to form the front substrate 20 and then the rear substrate 30, and then the AC plasma display device 10 is assembled. According to such a second manufacturing method, substantially the same effects as in the case of the first manufacturing method can be obtained.

As described above, according to the AC type plasma display device having the configuration of this example, the front substrate 20 faces the surface of the first transparent substrate 1 facing the second transparent substrate 11 along the row direction H. Scan electrode 3 and sustain electrode 4 formed in parallel
Are composed of transparent electrodes 3A and 4A made of a transparent conductor such as indium tin oxide and tin oxide, and transparent electrodes 3A and 4A formed on a part of each of the transparent electrodes 3A and 4A to reduce line resistance. Bus electrodes (trace electrodes) 3B and 4B made of low-resistance silver or the like, and each transparent electrode 3A,
4A, the transparent electrodes 3A, 4A of the light emitting cells 16 are arranged separately for each light emitting cell 16 divided by each partition wall 14 of the rear substrate 30.
A and 4A are made of the same conductor and are electrically connected to each other by a connecting transparent electrode 17 formed over each partition wall. Further, according to the method of manufacturing the AC type plasma display device having the configuration of this example, the connection transparent electrode 17 can be easily formed only by changing the conventionally used exposure mask pattern. Electrode 17
Need only be formed so as to traverse each of the adjacent light emitting cells 16, so that a very high patterning accuracy is not required. Therefore, in a configuration in which the transparent electrodes are arranged so as to be isolated for each light emitting cell, power consumption can be reduced and light emission efficiency can be improved without lowering light transmittance of the light emitting cell and without increasing cost. Further, display quality can be improved.

Second Embodiment FIG. 7 is a plan view showing a configuration of an AC type plasma display device according to a second embodiment of the present invention. A in this example
The configuration of the C-type plasma display device is the same as that of the first type described above.
A major difference from the configuration of the embodiment is that the shape of each transparent electrode of the scanning electrode and the sustaining electrode is formed in a fine width. The transparent electrodes 3A and 4A of the scan electrode 3 and the sustain electrode 4 of the AC type plasma display device of this example.
As shown in FIG. 7, elongated surface discharge portions 3a, 4a for forming the surface discharge gap 2 and these portions 3a, 4a
a are formed into a T shape from the elongated support portions 3b and 4b supporting the surface discharge portions 3a and 4b, and the surface discharge portions 3a and 4a and the support portions 3b and 4b.
Is formed to be as fine as possible, for example, 50 to 100 μm. And each support part 3b, 4b is electrically connected mutually by the transparent electrode 17 for a connection.

As described above, according to the structure of this embodiment, substantially the same effects as those described in the first embodiment can be obtained. In addition, according to the configuration of this example, since each transparent electrode is formed particularly in a fine width, power consumption can be further reduced.

Third Embodiment FIG. 8 is a plan view showing a configuration of an AC type plasma display device according to a third embodiment of the present invention. A in this example
The configuration of the C-type plasma display device is the same as that of the first type described above.
A major difference from the configuration of the embodiment is that each transparent electrode of the scanning electrode and the sustaining electrode is formed to have a finer width. The transparent electrodes 3A and 4A of the scan electrode 3 and the sustain electrode 4 of the AC type plasma display device of this example.
8A, as shown in FIG. 8, the elongated surface discharge portions 3a and 4a for forming the surface discharge gap 2 are formed in a gate shape, so that they are formed to have a finer width, for example, 40 to 70 μm. . The support surface discharge sections 3a, 4a are electrically connected to each other by the connection transparent electrode 17.

As described above, according to the structure of this embodiment, substantially the same effects as those described in the first embodiment can be obtained. In addition, according to the configuration of this example, since each transparent electrode is formed particularly in a fine width, power consumption can be further reduced.

Fourth Embodiment FIG. 9 is a plan view showing a configuration of an AC type plasma display device according to a fourth embodiment of the present invention. A in this example
The configuration of the C-type plasma display device is the same as that of the first type described above.
A major difference from the configuration of the embodiment is that the number of connecting transparent electrodes for connecting the transparent electrodes of the scanning electrode and the sustaining electrode is reduced. As shown in FIG. 9, the transparent electrodes 3A and 4A of the scan electrode 3 and the sustain electrode 4 of the AC-type plasma display device of this example are connected to an arbitrary light emitting cell 16 as shown in FIG.
Only the transparent electrodes 3A, 4A between each other are connected to the transparent electrode 1 for connection.
7 are electrically connected to each other. With such a configuration, the necessary minimum number of connection transparent electrodes 17 can be formed, so that power consumption can be further reduced.

As described above, according to the configuration of this embodiment, substantially the same effects as those described in the first embodiment can be obtained. In addition, according to the configuration of this example, the necessary minimum number of transparent electrodes for connection are formed, so that power consumption can be further reduced.

Fifth Embodiment FIG. 10 is a plan view showing a configuration of an AC plasma display device according to a fifth embodiment of the present invention. The configuration of the AC type plasma display device of this example is significantly different from the configuration of the above-described first embodiment in that two systems of connection transparent electrodes for connecting the transparent electrodes of the scan electrode and the sustain electrode are formed. Is a point. As shown in FIG. 10, the transparent electrodes 3A and 4A of the scan electrode 3 and the sustain electrode 4 of the AC type plasma display device of this example are connected to the first connection transparent electrode 17A formed in parallel and the second connection. And the transparent electrode 17B.

By forming two connection transparent electrodes composed of the first and second connection transparent electrodes 17A and 17B in this way, in the event that one of the connection transparent electrodes is disconnected, However, it can be supplemented by the remaining connection transparent electrodes, and the reliability can be improved. In this case, the width of each of the connection transparent electrodes 17A and 17B can be set arbitrarily. However, by forming them to have substantially the same width, if any one of them is disconnected as described above, the same current is applied. Can have capacity.

As described above, according to the structure of this embodiment, substantially the same effects as those described in the first embodiment can be obtained. In addition, according to the configuration of this example, the reliability can be improved because a plurality of connection transparent electrodes are formed.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like that do not depart from the gist of the present invention. Is also included in the present invention. For example, the conditions such as the film thickness and dimensions of each electrode described in the embodiment are merely examples, and these values can be appropriately changed according to the cell pitch of the light emitting cells. Further, the means for forming a transparent conductor film when forming a transparent electrode or the means for forming a conductor film when forming a bus electrode has been described by way of example of forming by a sputtering method.
Other means such as the emical vapor deposition method can be used. In addition, as a method of forming each transparent electrode and the connection transparent electrode, an example in which the transparent electrode and the connection transparent electrode are formed by a lift-off method or an etching method has been described. You may.

[0052]

As described above, according to the AC-type plasma display device of this embodiment, the scanning electrodes and the sustaining electrodes formed in parallel on the front substrate have the same line resistance as the transparent electrode made of a transparent conductor. And a bus electrode made of a low-resistance conductor to reduce the light emission.In a configuration in which each transparent electrode is separately arranged for each light emitting cell, each transparent electrode of each light emitting cell is the same as each transparent electrode. They are electrically connected to each other by a connection transparent electrode made of a conductor. Further, according to the method of manufacturing an AC type plasma display device having the configuration of this example, the connection transparent electrode can be easily formed only by changing the conventionally used exposure mask pattern. May be formed so as to cross each adjacent light emitting cell, so that a very high patterning accuracy is not required. Therefore, in a configuration in which the transparent electrodes are arranged so as to be isolated for each light emitting cell,
The power consumption can be reduced and the luminous efficiency can be improved without lowering the light transmittance of the light emitting cell and without increasing the cost, and the display quality can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an AC plasma display device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a configuration of a main part of the AC type plasma display device.

FIG. 3 is an enlarged plan view showing a configuration of a main part of the AC type plasma display device.

FIG. 4 is a plan view illustrating an effect of the AC type plasma display device.

FIG. 5 is a process chart showing a method of forming a main part of the AC plasma display device in the order of steps.

FIG. 6 is a process chart showing another method of forming the main part of the AC type plasma display device in the order of steps.

FIG. 7 is a plan view showing a configuration of an AC type plasma display device according to a second embodiment of the present invention.

FIG. 8 is a plan view showing a configuration of an AC type plasma display device according to a third embodiment of the present invention.

FIG. 9 is a plan view showing a configuration of an AC type plasma display device according to a fourth embodiment of the present invention.

FIG. 10 is a plan view showing a configuration of an AC type plasma display device according to a fifth embodiment of the present invention.

FIG. 11 is a plan view showing a configuration of a main part of a conventional AC type plasma display device.

FIG. 12 is a plan view showing another configuration of a main part of a conventional AC type plasma display device.

FIG. 13 is a plan view showing another configuration of a main part of a conventional AC plasma display device.

FIG. 14 is a plan view showing another configuration of a main part of a conventional AC plasma display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 11 Transparent substrate 2 Surface discharge gap 3 Scan electrode 3A, 4A Transparent electrode 3B, 4B Bus electrode 4 Sustain electrode (common electrode) 3a, 4a Elongated support part 3b, 4b Elongated surface discharge part 5, 8 Transparent Dielectric layer 6 Color filter layer 7 Black matrix layer 9 Protective layer 10 AC type plasma display device 12 Data electrode 13 White dielectric layer 14 Partition wall 15 Phosphor layer 16 Light emitting cell 17, 17A, 17B Transparent electrode for connection 18 Disconnection 20 Front substrate 21, 26 Photoresist film 22 Light shielding part 23 Exposure mask 25 Tin oxide film 30 Back substrate 40 Discharge gas space

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) H01J 11/00 H01J 11/00 K H04N 5/66 101 H04N 5/66 101A F-term (Reference) 5C027 AA01 AA03 5C040 FA01 FA04 GB03 GB14 GC02 GC05 GC06 GC19 JA07 JA16 LA05 MA03 MA12 MA23 MA26 5C058 AA11 AB02 BA02 BA26 BA35 5C094 AA02 AA10 AA22 AA44 BA31 CA19 DB04 EA04 EA05 EA07 EB02

Claims (7)

[Claims] A discharge gas space is formed between a front substrate and a rear substrate, and a scan electrode and a sustain electrode formed in parallel with a surface of the front substrate facing the rear substrate are transparent electrodes and a sustain electrode, respectively. An AC-type plasma display device comprising a transparent electrode and a bus electrode having a lower resistance than the transparent electrode, wherein each transparent electrode is formed separately for each light emitting cell, wherein the transparent electrodes of a plurality of the light emitting cells have a plurality of transparent electrodes. An AC type plasma display device, wherein the AC type plasma display device is formed so as to extend over the light emitting cells and is electrically connected to each other by a connecting transparent electrode formed of the same conductor as the transparent electrode. 2. The elongated electrode of claim 1, wherein the transparent electrode is connected to the bus electrode and is formed to extend over a plurality of the light emitting cells, and is connected to the support to form a surface discharge gap. 2. The AC type plasma display device according to claim 1, wherein said AC type plasma display device comprises: 3. The connection electrode according to claim 1, wherein the connection transparent electrode is formed in parallel with the bus electrode.
The AC-type plasma display device according to the above. 4. The AC type according to claim 3, wherein the connection transparent electrode comprises a first connection transparent electrode and a second connection transparent electrode formed in parallel. Plasma display device. 5. The first and second connection transparent electrodes,
5. The AC type plasma display device according to claim 4, wherein the AC type plasma display device is formed to have substantially the same width. 6. A discharge gas space is formed between a front substrate and a rear substrate, and a scan electrode and a sustain electrode formed in parallel to a surface of the front substrate facing the rear substrate are respectively formed of a transparent electrode and a sustain electrode. A method for manufacturing an AC type plasma display device, comprising: a bus electrode having a lower resistance than a transparent electrode, wherein each transparent electrode is formed separately for each light emitting cell, wherein the front substrate faces the rear substrate. A first step of forming a photoresist film on a main surface that is to be a surface, and patterning the photoresist film into a desired shape to form a region on the main surface of the front substrate where the scan electrodes and sustain electrodes are to be formed A second step of exposing only the first substrate, a third step of forming a transparent conductor film over the entire surface of the front substrate, the photoresist film remaining on the front substrate, and the photoresist film By simultaneously removing the covering transparent conductor film, the transparent electrodes constituting the scanning electrode and the sustain electrode are isolated for each light emitting cell while leaving the transparent conductor film only in the exposed area of the main surface. And forming a connection transparent electrode for electrically connecting the plurality of transparent electrodes simultaneously over a plurality of light emitting cells. Method. 7. The method according to claim 1, further comprising: after the fourth step, a fifth step of forming a bus electrode made of a conductive film on a part of each of the transparent electrodes of the scan electrode and the sustain electrode. Item 7. The method for manufacturing an AC plasma display device according to Item 6.