JPH08236029A - Plasma display panel - Google Patents

Abstract

PURPOSE: To provide a PDP wherein a partition for separating a discharge cell from each other is easily formed and also high brightness is obtained. CONSTITUTION: A cathode 15 is formed in an enamel substrate 13 constituted by forming a plurality of holes 14 which forms a discharge cell 17. A front glass plate 11 formed with the enamel substrate 13 and an anode 18 and a back glass plate 12 formed with the enamel substrate 13 and a fluorescent material film 19 are respectively sealed with a sealing glass 16.

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 (Plasma Display Panel).
Hereinafter referred to as PDP).

[0002]

2. Description of the Related Art FIG. 5 is a partial sectional view of a conventional DC discharge type PDP. An anode 52 is formed as a discharge electrode on the front glass plate 51 shown in FIG. A cathode 54 is formed as a discharge electrode on a rear glass plate 53 provided so as to face the front glass plate 51. A cell partition wall 55 is provided between the front glass plate 51 and the back glass plate 53 to separate discharge cells (discharge spaces) from each other. The phosphor 5 is attached to the inner wall of the cell partition 55.
6 is applied.

When a voltage is applied between the anode 52 formed on the front glass plate 51 and the cathode 54 formed on the back glass plate 53, the anode 52 and the cathode 54 are applied.
And the ultraviolet rays 57 generated by the discharge collide with the phosphor 56 to generate visible light 58.
8 is injected via the front glass plate 51. here,
Instead of applying the phosphor 56 to the inner wall portion of the cell partition wall 55, the cathode 54 may be formed and the phosphor 56 may be applied to the inner wall of the rear glass plate 53 on the discharge cell side.

[0004]

However, in the above-mentioned conventional PDP, in order to form the cell partition walls 55, a step of printing a glass paste by a screen printing method and baking the same is repeated many times, for example, 10 times. Therefore, a high printing technique is required, which causes a decrease in yield with an increase in panel size.

Further, it is difficult to apply the phosphor 56 to the inner wall portion of the cell partition wall 55. Therefore, the phosphor 56 may not be applied uniformly and uneven brightness may occur. Further, when the cathode 54 is formed on the inner wall of the discharge cell of the rear glass plate 53 and the phosphor 56 is applied, the area of the inner wall is limited. It is difficult to distribute both areas to which the body 56 is applied, and if the area to which the phosphor 56 is applied is too large, plasma discharge is hindered, while if the area to which the phosphor 56 is applied is too small, brightness and contrast are increased. However, there is a problem in that

In view of the above circumstances, it is an object of the present invention to provide a PDP in which barrier ribs for separating discharge cells from each other are easily formed and high brightness is obtained.

[0007]

A PDP of the present invention which achieves the above object is (1) a back substrate (2) a front substrate facing the back substrate (3) sandwiched between these back substrate and front substrate, The present invention is characterized in that the partition substrate is provided with a plurality of holes for forming discharge cells.

Here, it is effective that the partition substrate has a discharge electrode formed on the inner wall of the hole. Further, it is preferable that the back substrate has a phosphor film formed on an inner wall portion of the discharge cell of the back substrate.

[0009]

Since the PDP of the present invention includes the partition substrate sandwiched between the rear substrate and the front substrate and having a plurality of holes for forming the discharge cells, the PDP for separating the discharge cells from each other. The partition wall is easily formed. Therefore, as compared with the case of forming the cell partition wall by repeating the step of printing the glass paste by the screen printing method and firing it many times, the number of steps is reduced and the yield accompanying the increase in the panel size is improved. To do.

Further, when the discharge electrode is formed on the inner wall of the hole forming the discharge cell of the partition substrate, the phosphor film can be formed on the entire inner wall portion of the discharge cell of the rear substrate,
As in the prior art, it is difficult to apply the phosphor to the inner wall portion of the cell partition wall, and the phosphor is not uniformly applied, resulting in uneven brightness, and formation of a cathode on the inner wall of the discharge cell of the rear glass plate. A PDP with high brightness can be easily manufactured without any inhibition of plasma discharge and deterioration in brightness and contrast that occur when both the application of the phosphor and the phosphor are performed.

Furthermore, when the phosphor film is formed on the inner wall portion of the discharge cell of the rear substrate, the phosphor film is uniformly formed and uneven brightness is reduced.

[0012]

Embodiments of the present invention will be described below. FIG. 1 is a partial sectional view of an embodiment of the PDP of the present invention, FIG.
Is a plan view of a enamel substrate on which a cathode is formed, and FIG.
It is sectional drawing of the enamel board shown in FIG. A rear glass plate 12 is arranged so as to face the front glass plate 11 shown in FIG. Between the front glass plate 11 and the rear glass plate 12, a enamel substrate 13 having a large number of holes 14 (see FIG. 2) forming discharge cells is arranged. The enamel board 13 includes the invar plate 13a and the invar plate 13a.
It is formed from crystallized glass 13b which is electrodeposited on the surface of a and baked. Further, a cathode 15 as a discharge electrode is formed in the hole 14 of the enamel substrate 13.

The enamel substrate 13 and the front glass plate 11, and the enamel substrate 13 and the rear glass plate 12 are sealed by the sealing glass 16, whereby the enamel substrate 13 is formed.
The hole 14 is closed to form a discharge cell 17 as a discharge space. In addition, the discharge cell 17 of the front glass plate 11
An anode 18 as a discharge electrode is formed on the inner wall of the. Further, a phosphor film 19 is formed on the entire portion of the inner wall of the discharge cell 17 of the rear glass plate 12.

The method of manufacturing the PDP shown in FIG. 1 will be described below. First, in order to manufacture the enamel substrate 13, an Invar plate 13a having a length of 600 mm, a width of 500 mm and a thickness of 100 μm was prepared. As shown in FIG. 2, a large number of holes 14 are etched in the invar plate 13a at a pitch of 0.6 mm in the length direction and a pitch of 0.8 mm in the width direction. Glass powder GA-44 (made by Nippon Electric Glass)
Is soaked in isopropyl alcohol (IPA) in which is dispersed, and glass powder GA-44 is electrodeposited on the Invar plate 13a, and then baked at 850 ° C. in the atmosphere to obtain a crystallized glass 13b as an insulating coating layer having a thickness of 30 μm. Formed. Thus, the enamel substrate 13 was obtained.

Next, using a dry film, a gap of 0.15 mm shown in FIG. 2 was formed on the surface of the enamel substrate 13.
A plating resist was formed on the entire back surface of the enamel substrate 13. Next, electroless Ni plating is performed, and when the film thickness is 4 to 5 μm, the resist is peeled off, and an electrode pattern is formed on the surface so that the holes 14 in the same row parallel to the lateral direction of FIG. 2 have the same potential. Formed. Thereby, the cathode 15 was obtained. The size of the hole 14 of the enamel substrate 13 on which the cathode 15 was formed was 0.3 mm × 0.6 mm.

Next, a front glass plate 11 having a length of 600 mm and a width of 520 mm is prepared, and the front glass plate 11 is prepared.
(Indium Tin Ox) parallel to the width direction of the
ide) A line electrode was formed by the PVD method to obtain the anode 18. Next, a back glass plate 12 having a length of 580 mm and a width of 500 mm is prepared, and red, blue, and green phosphors are applied to the surface of the back glass plate 12 by a screen printing method to form a phosphor film 19. Got

FIG. 4 is an assembly view of the PDP shown in FIG. The anode 18 formed on the front glass plate 11 faces downward, the electrode pattern (cathode 15) formed on the enamel substrate 13 faces downward, and the phosphor film 19 formed on the back glass plate 12 faces upward. The sealing glass paste is printed on the peripheries of the glass plate 11 and the back glass plate 12 and on the front glass plate 11 and the back glass plate 12 at positions corresponding to the grids around the holes 14 of the enamel substrate 13 and N
An e-Ar-Xe gas was sealed and sealed.

In this way, barrier ribs for separating the discharge cells 17 from each other were easily formed. PD created
When a voltage was applied between the P anode 18 and the P cathode 15 to check the emitted light, the luminance unevenness was at a sufficiently low level. Although the enamel substrate is used as the partition substrate in this embodiment, the invention is not limited to this, and a ceramic substrate or a glass substrate may be used.

[0019]

As described above, the PDP of the present invention
Includes a partition wall substrate having a plurality of holes forming discharge cells, so that partition walls for separating the discharge cells from each other can be easily formed and high brightness can be obtained.

[Brief description of drawings]

FIG. 1 is a partial sectional view of an embodiment of a PDP of the present invention.

FIG. 2 is a plan view of a enamel substrate on which a cathode is formed.

FIG. 3 is a cross-sectional view of the enamel substrate shown in FIG.

FIG. 4 is an assembly diagram of the PDP shown in FIG.

FIG. 5 is a partial cross-sectional view of a conventional DC discharge PDP.

[Explanation of symbols]

 11 Front Glass Plate 12 Back Glass Plate 13 Enamel Substrate 13a Invar Plate 13b Crystallized Glass 14 Holes 15 Cathode 16 Sealing Glass 17 Discharge Cell 18 Anode 19 Phosphor Film

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Muraki 2270 Yokoze, Yokose-cho, Chichibu-gun, Saitama Sanryo Materials Co., Ltd.

Claims (3)

[Claims] 1. A back substrate, a front substrate facing the back substrate, and a partition substrate sandwiched between the back substrate and the front substrate and having a plurality of holes forming discharge cells formed therein. Characteristic plasma display panel. 2. The plasma display panel according to claim 1, wherein the partition substrate has a discharge electrode formed on an inner wall of the hole. 3. The plasma display panel according to claim 1, wherein the back substrate has a phosphor film formed on an inner wall portion of the discharge cell of the back substrate.