JP2000215815A - Plasma display panel and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plasma display panel and a manufacturing method thereof which can restrain a partial rise in a resistance of an electrode and occurrence of a disconnection failure by preventing an end part of the electrode from being polished. SOLUTION: A dielectric layer 8 covers scanning electrodes Xi and common electrodes Y which are parallel to each other except ends Xa of the scanning electrodes Xi and ends of the common electrodes Y. An abrasion prevention body 8a which prevents abrasion of the end parts Xa is arranged in an area R2 from a tip of the scanning electrode Xi to the dielectric layer 8, and is provided on at least one of the sides of the scanning electrodes Xi. It is possible to prevent abrasion of the ends of the electrodes Xi by providing the abrasion prevention body 8 on at least one of the sides of the electrodes Xi from the tip of the electrodes Xi to the dielectric layer 8 even if the abrasion prevention body 8 is abraded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (hereinafter abbreviated as "PDP") for use in personal computers, office workstations, or wall-mounted televisions, which are expected to develop in the future, and a method of manufacturing the same.

[0002]

2. Description of the Related Art FIG. 14 is a plan view of a conventional AC PDP, particularly showing the vicinity of an end portion Xa of a scanning electrode Xi (i = 1 to n). FIG. 15 shows a cross section taken along section line XV-XV in FIG.

In FIGS. 14 and 15, it is assumed that the scanning electrode Xi, the address electrode Wj (j = 1 to m) and the barrier rib 9 are opaque, and the other are transparent.
4 shows a case where the structure of FIG. 15 is viewed from above the glass substrate 7 side.

As shown in FIGS. 14 and 15, an AC type P
The DP includes a glass substrate 6 and a glass substrate 7 which face each other via a discharge space (gas space) 100 and a glass substrate 6.
And a sealing material (frit glass) 11 provided between the glass substrate 7 and the glass substrate 7. The discharge space 1 is formed by the glass substrate 6, the glass substrate 7, and the frit glass 11.
00 is sealed.

The scanning electrodes Xi,
A common electrode Y and a dielectric layer 8 are provided. The scanning electrode Xi and the common electrode Y are parallel to each other. Dielectric layer 8
Covers the scanning electrode Xi and the common electrode Y, and forms the discharge space 1
Insulate from 00. However, the end Xa of the scanning electrode Xi needs to be connected to an X driver (not shown), and the end of the common electrode Y needs to be connected to a Y driver (not shown). For this reason,
The end Xa of the scan electrode Xi and the end of the common electrode Y are exposed without being covered by the dielectric layer 8 and protrude from the frit glass 11.

On the other hand, an address electrode Wj and an overglaze layer 10 are provided on the surface of the glass substrate 7.
The address electrode Wj is covered with an overglaze layer 10 for the purpose of preventing the material of the address electrode Wj (for example, silver: Ag) from diffusing and improving the reflectance of light generated by the discharge in the discharge space 100. Further, between the overglaze layer 10 and the dielectric layer 8, a barrier rib 9 serving as a separator for preventing color mixing between cells and maintaining a discharge gap is provided.
Are formed. A rare gas for enabling discharge is introduced into a discharge space 100 sealed by the glass substrate 6, the glass substrate 7, and the frit glass 11.

FIG. 16 shows the structure of the AC PDP shown in FIGS. 14 and 15 in the course of manufacture. FIG. 16 shows a state after the dielectric layer 8 has been applied. FIG. 17 shows a cross section taken along section line XVII-XVII in FIG. FIG. 16 shows a case where the structure of FIG. 17 is viewed from above the dielectric layer 8 side. After the dielectric layer 8 has been applied, the surface of the dielectric layer 8 is polished to reduce irregularities on the surface of the dielectric layer 8.

FIG. 18 is a plan view conceptually showing a method of polishing the dielectric layer 8. FIG. 19 shows a cross section taken along section line XIX-XIX in FIG. Polishing of the dielectric layer 8 is performed by using the polishing roll 1
The surface of the dielectric layer 8 on the glass substrate 6 is moved while a certain pressure is applied to the polishing paper 13 by 2. Usually, the polishing roll 12 is moved in a direction parallel to the scanning electrode Xi and the common electrode Y. By this polishing, the dielectric layer 8 having a surface with few irregularities can be obtained.

[0009]

However, when the dielectric layer 8 is polished, the scan electrode Xi corresponding to the polishing start position is not polished.
And the end Ya of the common electrode Y on the opposite side which is the polishing end position may be erroneously polished.
If the edge of the electrode is polished, there is a problem that the electrode resistance is partially increased or a disconnection failure occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is possible to prevent the edge of an electrode from being polished, thereby partially increasing the resistance of the electrode or causing a disconnection failure. It is an object of the present invention to obtain a PDP capable of suppressing generation of a PDP and a method of manufacturing the same.

[0011]

Means for Solving the Problems According to a first aspect of the present invention, there are provided: a plurality of electrodes parallel to each other; a dielectric layer covering the plurality of electrodes except for ends of the plurality of electrodes; A first substrate having a surface provided with an anti-abrasion body for preventing at least one end of the plurality of electrodes from being abraded in a region from a tip of the plurality of electrodes to the dielectric layer; Sealing the discharge space with a second substrate facing the front side of the first substrate via a discharge space, and the first and second substrates with the ends of the plurality of electrodes protruding. And a sealing material provided between the first and second substrates to perform the operation.

[0012] In the means for solving problems according to claim 2 of the present invention, the abrasion preventing body is provided on both sides of each of the plurality of electrodes.

[0013] In the means for solving problems according to claim 3 of the present invention, the attrition preventive body is provided for every predetermined number of the plurality of electrodes.

[0014] In the means for solving problems according to claim 4 of the present invention, the abrasion preventive body is made of the same material as the dielectric layer.

[0015] In the means for solving problems according to claim 5 of the present invention, the abrasion preventer is a part of the dielectric layer.

In the means for solving problems according to claim 6 of the present invention, the abrasion preventing body is independent of the dielectric layer.

[0017] In the means for solving problems according to claim 7 of the present invention, the abrasion preventive body is thicker than the electrode.

[0018] The problem solving means according to claim 8 of the present invention comprises:
6. The method for manufacturing a plasma display panel according to claim 5, wherein the abrasion preventing body is formed simultaneously with the formation of the dielectric layer.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 shows an AC type P
FIG. 2 is a conceptual diagram illustrating an overall configuration of a DP device. FIG. 1 is a conceptual diagram not only of the first embodiment but also of another embodiment. The AC PDP device includes an AC PDP 1 and a driving circuit 1a for driving the PDP 1.

The AC type PDP 1 has a scanning electrode Xi (i = 1
To n), the common electrode Y and the address electrode Wj (j = 1 to
m). The driving circuit 1a includes an X driver 2 connected to the scanning electrode Xi, a Y driver 3 connected to the common electrode Y, a W driver 4 connected to the address electrode Wj, and an X driver 2, a Y driver 3, and a W driver 4. And a control circuit 5 for controlling. The control circuit 5 controls the X driver 2, the Y driver 3, and the W driver 4 according to the image signal S.
Control. Thus, a voltage corresponding to the image signal S is applied to the scan electrode Xi, the common electrode Y, and the address electrode Wj, and an image corresponding to the image signal S is displayed on the AC type PDP 1.

FIG. 2 shows an AC type PD according to the first embodiment of the present invention.
FIG. 3 is a plan view of P, particularly showing the periphery of an end Xa of a scanning electrode Xi. FIG. 3 shows a cross section taken along the line III-III in FIG.

In FIGS. 2 and 3, the scanning electrode X
Assuming that i, the address electrode Wj, and the barrier rib 9 are opaque and the others are transparent, FIG. 2 shows the structure of FIG. 3 when viewed from above the glass substrate 7 side.

As shown in FIGS. 2 and 3, an AC type PDP
1 includes a glass substrate 6 and a glass substrate 7 that face each other via a discharge space 100, and a sealing material (frit glass) 11 provided between the glass substrate 6 and the glass substrate 7. The discharge space 100 is sealed by the glass substrate 6, the glass substrate 7, and the frit glass 11. Note that each code of the AC type PDP 1 in FIG. 1 corresponds to each code in FIGS. 2 and 3.

On the surface of the glass substrate 6, scan electrodes Xi,
A common electrode Y, a dielectric layer 8, and an anti-abrasion body 8a are provided. The scanning electrode Xi and the common electrode Y are parallel to each other. The dielectric layer 8 covers the scan electrode Xi and the common electrode Y with the region R1 and insulates the scan electrode Xi and the common electrode Y from the discharge space 100. However, as shown in FIG. 1, the end Xa of the scanning electrode Xi needs to be connected to the X driver 2, and the end Ya of the common electrode Y needs to be connected to the Y driver 3. For this reason, the end Xa of the scanning electrode Xi and the end Ya of the common electrode Y are
And is exposed without being covered by the frit glass 11.

In the region R2 from the tip of the scan electrode Xi to the dielectric layer 8, on both sides of all the scan electrodes Xi, an abrasion preventer 8a for preventing the abrasion of the scan electrodes Xi is provided on the glass substrate 6. Is provided on the surface. The same applies to the end Ya of the common electrode Y. That is, in the region R2 from the tip of the common electrode Y to the dielectric layer 8, on both sides of the common electrode Y, an anti-abrasion body 8 for preventing the common electrode Y from being abraded.
a is provided on the surface of the glass substrate 6.

In the first embodiment, the abrasion preventers 8a provided at the ends Xa and Ya of the scan electrode Xi and the common electrode Y are a part of the dielectric layer 8, and are made of the same material as the dielectric layer 8. , The same thickness.

On the other hand, an address electrode Wj and an overglaze layer 10 are provided on the surface of the glass substrate 7.
The address electrode Wj is covered with an overglaze layer 10 for the purpose of preventing the material of the address electrode Wj (for example, silver: Ag) from diffusing and improving the reflectance of light generated by the discharge in the discharge space 100. Further, between the overglaze layer 10 and the dielectric layer 8, a barrier rib 9 serving as a separator for preventing color mixing between cells and maintaining a discharge gap is provided.
Are formed. A rare gas for enabling discharge is introduced into a discharge space 100 sealed by the glass substrate 6, the glass substrate 7, and the frit glass 11.

FIG. 4 shows the structure of the AC PDP 1 shown in FIGS. 2 and 3 in the course of manufacture. FIG. 4 shows the state after the dielectric layer 8 has been applied. FIG. 5 shows a cross section taken along the line VV of FIG. 4, and FIG. 4 shows a case where the structure of FIG. 5 is viewed from above the dielectric layer 8 side. After the dielectric layer 8 has been applied, the surface of the dielectric layer 8 is polished to reduce irregularities on the surface of the dielectric layer 8.

As in the conventional example shown in FIG. 18, polishing of the dielectric layer 8 is performed by
The surface of the dielectric layer 8 on the glass substrate 6 is moved while a certain pressure is applied to the polishing paper 13 by the polishing roll 12. By this polishing, the dielectric layer 8 having a surface with few irregularities can be obtained.

Since the glass substrate 6 and the polishing roll 12 may be moved relatively, the polishing paper 13 may be moved on the glass substrate 6 side with the polishing roll 12 fixed. Also, the above pressure may be zero.

When the polishing roll 12 and the glass substrate 6 are relatively moved in a direction parallel to the scanning electrode Xi and the common electrode Y, the end Xa of the scanning electrode Xi at the polishing start position is moved.
And the end Y of the opposite common electrode Y corresponding to the polishing end position
Consider a case where a is erroneously polished. In the present invention, the dielectric layer 8 is formed from the tip of the scanning electrode Xi and the common electrode Y.
And the scan electrode Xi and the common electrode Y
, A wear preventive body 8 for preventing wear of the scan electrode Xi
a, the end portions X of the scan electrode Xi and the common electrode Y are formed even if the abrasion preventive body 8a is polished.
The polishing of a and Ya can be suppressed. Thereby, it is possible to suppress the resistance of the scan electrode Xi and the common electrode Y from being partially increased, and the occurrence of disconnection failure.

The anti-abrasion body 8a is provided on both sides of each of the scanning electrode Xi and the common electrode Y, so that
Polishing of all the scanning electrodes Xi and the ends Xa, Ya of the common electrode Y can be suppressed more reliably.

Further, by forming the abrasion preventive body 8a as a part of the dielectric layer 8, the abrasion preventive body 8a and the dielectric layer 8 can be formed simultaneously, thereby reducing the number of steps. .

Embodiment 2 The structure shown in FIGS. 4 and 5 of the first embodiment may be replaced with the structure shown in FIGS. That is, in the first embodiment, the attrition preventing bodies 8a are provided on both sides of each of all the scanning electrodes Xi. Instead of this, in the second embodiment, the attrition preventing bodies 8a are provided for every two scanning electrodes Xi. FIG. 7 shows a cross section taken along section line VII-VII of FIG. 6, and FIG. 6 shows a case where the structure of FIG. 7 is viewed from above the dielectric layer 8 side.

If the number of the wear preventing members 8a is large, it becomes difficult to connect the connector of the X driver 2 (FIG. 1) to the end Xa of the scanning electrode Xi. Therefore, in the second embodiment, the attrition preventing body 8a is provided for each of the blocks B1, B2,.... As described above, since the number of the wear preventive bodies 8a is reduced, the scan electrodes X
It is possible to suppress the difficulty in connecting the end Xa of i and the connector of the X driver 2. This is particularly effective when the terminals in the connector of the X driver 2 and connected to the scanning electrodes Xi are divided for each block.

Embodiment 3 Blocks B1 and B in FIG.
The number of scan electrodes Xi included in each of 2,... May be larger than two. For example, as shown in FIG.
, B2,..., The number of scan electrodes Xi included in each
It may be a book. 9 shows a cross section taken along the line IX-IX of FIG. 8, and FIG. 8 shows a case where the structure of FIG. 9 is viewed from above the dielectric layer 8 side. The smaller the number of the abrasion preventing members 8a, the more difficult it is to connect the end Xa of the scanning electrode Xi to the connector of the X driver 2.
In particular, as in the second embodiment, it is effective when the terminals connected to the scanning electrodes Xi in the connector of the X driver 2 are divided for each block.

Embodiment 4 FIG. The structure shown in FIGS. 4 and 5 of the first embodiment may be replaced with the structure shown in FIGS. That is, in the first embodiment, the abrasion preventive body 8a is
Was part of Instead, in the fourth embodiment, the attrition preventing body 8 a is independent of the dielectric layer 8. Note that FIG.
FIG. 11 shows a cross section taken along section line XI-XI of FIG. 11, and FIG. 10 shows a case where the structure of FIG. 11 is viewed from above the dielectric layer 8 side.

The abrasion preventive body 8a may be made of the same material as the dielectric layer 8, or may be made of a different material. If the abrasion preventive body 8a is made of the same material as the dielectric layer 8, the number of materials can be reduced accordingly.

Further, since the abrasion preventive body 8a is independent of the dielectric layer 8, it is only necessary to add a step of forming the abrasion preventive body 8a to an existing manufacturing process.

Embodiment 5 The structure shown in FIGS. 4 and 5 of the first embodiment may be replaced with the structure shown in FIGS. That is, in the first embodiment, the abrasion preventive body 8a is
It was the same thickness. Instead of this, in Embodiment 5,
The abrasion preventive body 8a is thicker than the scan electrode Xi and thinner than the dielectric layer 8. 13 shows a cross section taken along the line XIII-XIII of FIG. 12, and FIG. 12 shows a case where the structure of FIG. 13 is viewed from above the dielectric layer 8 side.

Since the abrasion preventive body 8a is thicker than the scan electrode Xi and the common electrode Y, the polishing roll 12 shown in FIG. 19 does not contact the scan electrode Xi even if it contacts the abrasion preventive body 8a.

Next, of the method of manufacturing the AC type PDP 1 of the fifth embodiment, the formation of the dielectric layer 8 and the abrasion preventer 8a will be described. The fifth embodiment is characterized in that the abrasion preventive body 8a is formed at the same time as the dielectric layer 8 is formed. That is, first, except for the ends of the scanning electrode Xi and the common electrode Y, a region R1 covering the scanning electrode Xi and the common electrode Y, and a region R2 from the tip of the scanning electrode Xi and the common electrode Y to the region R1. And all the scan electrodes X
Part of the dielectric layer 8 (the dielectric layer 81) is formed in one process on both sides of the i and the common electrode Y. The portion of the dielectric layer 8 formed on the region R2 is the anti-abrasion body 8a. Next, the remainder of the dielectric layer 8 (the dielectric layer 8
2,83) is formed in two steps. As described above, the dielectric layers 8 and 8a are formed in three steps in total.

As described above, the step of forming the dielectric layer 8 in, for example, three times is conventional. In the fifth embodiment, the anti-abrasion body 8a can be formed using this existing manufacturing process, so that the number of processes does not increase.

Embodiment 6 FIG. The second or third embodiment may be applied to each of the fourth and fifth embodiments. That is,
In the fourth and fifth embodiments, the anti-abrasion bodies 8a are provided on both sides of each of the scan electrodes Xi. Instead, in the sixth embodiment, the number of the abrasion preventing bodies 8a may be reduced by providing the abrasion preventing bodies 8a of the fourth and fifth embodiments for each of the blocks B1, B2,....

Embodiment 7 In the first to sixth embodiments, the present invention is applied to an AC PDP.
May be applied.

[0046]

According to the first aspect of the present invention, the anti-abrasion body is polished by providing the anti-abrasion body beside at least one of the plurality of electrodes from the tips of the plurality of electrodes to the dielectric layer. Even if it is possible, polishing of the ends of the plurality of electrodes can be suppressed. As a result, it is possible to suppress a partial increase in the resistance of the plurality of electrodes and the occurrence of disconnection failure.

According to the second aspect of the present invention, it is possible to prevent the end portions of all the plurality of electrodes from being polished.

According to the third aspect of the present invention, since the number of wear preventing bodies is reduced, it is possible to suppress the difficulty in connecting the end of the electrode and the driver.

According to the fourth aspect of the present invention, the number of materials can be reduced by using the same material as the dielectric layer for the attrition preventing body.

According to the fifth aspect of the present invention, the attrition preventive body and the dielectric layer can be formed simultaneously by forming the attrition preventive body as a part of the dielectric layer.

According to the sixth aspect of the present invention, it is only necessary to add a step of forming the attrition preventing body to the existing manufacturing process.

According to the seventh aspect of the present invention, since the attrition preventive body is thicker than the plurality of electrodes, for example, the polishing roll does not contact the electrode even if it contacts the attrition preventive body.

According to the eighth aspect of the present invention, an anti-abrasion body can be formed by utilizing an existing manufacturing process.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an overall configuration of an AC type PDP device of the present invention.

FIG. 2 is a partial plan view of the AC PDP according to the first embodiment of the present invention.

FIG. 3 is a partial cross-sectional view of the AC PDP according to the first embodiment of the present invention.

FIG. 4 is a partial plan view of the AC PDP according to the first embodiment of the present invention.

FIG. 5 is a partial cross-sectional view of the AC PDP according to the first embodiment of the present invention.

FIG. 6 is a partial plan view of an AC PDP according to a second embodiment of the present invention.

FIG. 7 is a partial cross-sectional view of an AC PDP according to a second embodiment of the present invention.

FIG. 8 is a partial plan view of an AC PDP according to Embodiment 3 of the present invention.

FIG. 9 is a partial cross-sectional view of an AC PDP according to a third embodiment of the present invention.

FIG. 10 is a partial plan view of an AC PDP according to a fourth embodiment of the present invention.

FIG. 11 is a partial cross-sectional view of an AC PDP according to a fourth embodiment of the present invention.

FIG. 12 is a partial plan view of an AC PDP according to a fifth embodiment of the present invention.

FIG. 13 is a partial sectional view of an AC PDP according to a fifth embodiment of the present invention.

FIG. 14 is a partial plan view of a conventional AC type PDP.

FIG. 15 is a partial cross-sectional view of a conventional AC PDP.

FIG. 16 is a partial plan view of a conventional AC type PDP.

FIG. 17 is a partial sectional view of a conventional AC PDP.

FIG. 18 is a plan view showing a state of polishing a dielectric layer of a conventional AC PDP.

FIG. 19 is a cross-sectional view showing a state of polishing a dielectric layer of a conventional AC PDP.

[Explanation of symbols]

Xi (i = 1 to n) scanning electrode, Y common electrode, Xa
Edge, 6,7 glass substrate, 8 dielectric layer, 8a anti-abrasion body, 11 sealing material.

Claims (8)

[Claims] 1. A plurality of electrodes parallel to each other, a dielectric layer covering the plurality of electrodes except for ends of the plurality of electrodes, and a region from tips of the plurality of electrodes to the dielectric layer. A first substrate provided on a surface thereof with an abrasion preventing body for preventing abrasion of the end portion at least on one side of the plurality of electrodes; and facing the surface of the first substrate via a discharge space. A second substrate; and the first electrode in a state where the end portions of the plurality of electrodes protrude.
And a sealing material interposed between the first and second substrates to seal the discharge space with the second substrate. 2. The plasma display panel according to claim 1, wherein the attrition preventing members are provided on both sides of each of the plurality of electrodes. 3. The plasma display panel according to claim 1, wherein the attrition preventive body is provided for every predetermined number of the plurality of electrodes. 4. The plasma display panel according to claim 1, wherein said abrasion preventive body is made of the same material as said dielectric layer. 5. The plasma display panel according to claim 1, wherein the abrasion preventer is a part of the dielectric layer. 6. The plasma display panel according to claim 1, wherein the abrasion preventing body is independent of the dielectric layer. 7. The plasma display panel according to claim 1, wherein the attrition preventive body is thicker than the electrodes. 8. The method of manufacturing a plasma display panel according to claim 5, wherein the wear preventing body is formed simultaneously with forming the dielectric layer.