JPH0644911A - Plasma display panel and manufacture thereof - Google Patents

Abstract

PURPOSE:To obtain a long-life panel by providing a maintaining electrode on the side surface of a barrier rib, and generating a discharge in the parallel direction with a front surface substrate and a rear surface substrate on which fluorescent films are arranged to prevent the deterioration of a fluorescent body due to discharge impact. CONSTITUTION:A writing electrode 2 is provided on a front surface substrate 1 and a barrier rib 5 is provided on a rear surface substrate 4 and a maintaining electrode 6 is provided on both side surfaces thereof. A fluorescent film 3, 8 is provided on the substrate 1, 4. A voltage inverted in phase is applied between the electrodes 6. When a higher voltage than a discharge initiating voltage is applied to the electrode 2, a discharge is generated between the electrode 2 and the electrode 6 and the discharge makes a trigger to generate a discharge between these two electrodes 6. Ultraviolet rays are generated in the selected cell, so that a fluorescent film 3, 8 on the substrate 1, 4 is excited to emit light. Since the electrode 6 is provide on the side surface of the barrier rib 5, the discharge is generated in the parallel direction with the fluorescent film 3, 8, so that the deterioration of the fluorescent body due to discharge impact may be prevented to gain a long-life panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color plasma display panel, and more particularly to an electrode structure and a phosphor film arrangement structure and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, a color plasma display panel of this type has an X electrode 2 on a front substrate 1 as shown in FIG.
0 and the phosphor film 21 are arranged, and the Y electrode 24 is arranged on the rear substrate 4 facing each other with the barrier rib 22 kept at a predetermined interval.
Multi-color display is achieved by exciting the phosphor film 21 with ultraviolet rays generated by the discharge between the electrode 20 and the Y electrode 24 to cause the phosphor film 21 to emit light, and by separately forming the phosphors emitting red, green, and blue colors by the discharge cells. Alternatively, the structure was such that full-color display was performed (for example, actual Kaihei 2-133855).
Issue). The X electrode 20 is formed by a photolithography method after depositing ITO, Al, Au or the like, or S
For example, a method of forming a tin oxide film doped with b, F or the like by a CVD method is adopted. Y electrode 24, barrier rib 22
Is formed by a thick film screen printing method.

[0003]

In the above-mentioned conventional color plasma display panel, since the display phosphor is only on the front substrate, the brightness is low, and the phosphor film is formed on the surface perpendicular to the discharge direction. Therefore, there is a drawback that the phosphor deteriorates due to the impact of discharge and has a short life.

[0004]

A plasma display panel according to the present invention has a pair of insulating substrates facing each other with a gas discharge space in between, and barrier ribs parallel to each other are arranged on one insulating substrate, and side surfaces of the barrier ribs are arranged. The sustain electrodes are arranged so as to face each other, the write electrodes are arranged so as to cross the sustain electrodes three-dimensionally, and the phosphor film is arranged at a position corresponding to the discharge cells of the sustain electrodes of the pair of insulating substrates. ing.

Further, in the method of manufacturing a plasma display panel according to the present invention, barrier ribs are formed on one insulating substrate, and a positive conductive photo paste is applied to one insulating substrate including at least side surfaces of the barrier ribs, and a photolithography method is applied. And a step of forming a sustain electrode on the side surface of the barrier rib, and a step of applying a negative type phosphor photo paste to at least an insulating substrate sandwiched by the barrier rib to form a phosphor film by a photolithography method.

[0006]

The present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway perspective view of a first embodiment of the present invention. The writing electrode 2 is provided on the front substrate 1. Barrier ribs 5 are formed on the rear substrate 4 so as to intersect the write electrodes 2, and sustain electrodes 6 are formed on both side surfaces of the barrier ribs 5. A phosphor film 3 and a phosphor film 8 are formed on the front substrate 1 and the rear substrate 4 corresponding to the discharge cells 7 of the sustain electrodes 6. The write electrode 2 is formed of a tin oxide film by the CVD method. The phosphor film 3 formed on the front substrate 1 is formed by a photolithography method. The barrier rib 5 is formed by a thick film printing method.

A method of manufacturing the sustain electrode 6 and the phosphor film 8 will be described with reference to the drawings. 2A to 2G are cross-sectional views showing steps of the method for manufacturing a plasma display panel of the present invention. As shown in FIG. 2 (a), a barrier rib paste made of fine particles of ceramics such as alumina and zirconia and a low softening point glass fine powder is printed on the rear substrate 4 made of a glass plate by a thick film screen printing method, and then baked. Then, the barrier rib 5 was formed. Next, as shown in FIG.
A positive photosensitive silver paste 6'is spray-coated on the rear substrate 4 and the barrier ribs 5. Next, as shown in FIG. 2C, the positive photosensitive silver paste 6'is dried, and then the rear substrate 4 is irradiated with vertical parallel light 9 for exposure. Thereafter, development and baking are performed, and as shown in FIG. 2D, the positive photosensitive silver paste on the upper surface of the barrier rib 5 and the upper surface of the rear substrate 4 is removed, and the sustain electrode 6 is formed on the side surface of the barrier rib 5.
To form. Next, as shown in FIG. 2E, a phosphor slurry 8'containing a negative photosensitive binder is applied by spraying. Next, as shown in FIG. 2F, the phosphor slurry 8 ′ is dried and then exposed using the mask 10. Thereafter, development and heat treatment are performed to obtain a substrate having the phosphor film 8 formed on the rear substrate 4 between the barrier ribs 5 as shown in FIG.

On the other hand, a writing electrode 2 made of tin oxide doped with Sb is formed on the front substrate 1 by a CVD method,
A phosphor film 3 patterned into a predetermined pattern by a photolithography method is formed in the vicinity of the write electrode. The front substrate 1 and the rear substrate 4 shown in FIG. 2 (g) are combined so as to face each other so that the phosphor films 3 and 8 face inward, and the periphery is hermetically sealed. , A He-Xe gas or Ne-Xe is enclosed, and a plasma display panel is completed.

A rectangular voltage V _S, which is slightly lower than the discharge start voltage between the two sustaining electrodes whose phases are reversed, is applied between the two sustaining electrodes 6 of the plasma display panel manufactured as described above. In this state, no discharge occurs, but a rectangular voltage V _W whose phase is the inverse of the voltage applied to one electrode of the sustain electrode 6 is applied to the write electrode 2 due to the potential difference between the write electrode 2 and the sustain electrode 6. When applied so as to be higher than the starting voltage, the write electrode 2 and the sustain electrode 6 are
Discharge occurs at the intersection with. Then, this discharge is used as a trigger to generate a discharge between the two sustain electrodes 6. At this time, V
_{When S} is set to a voltage higher than the discharge sustaining voltage between the sustain electrodes 6, the discharge is maintained and the cell is in the selected state even after V _W becomes zero. In the selected cell, ultraviolet rays are generated by the discharge, and the phosphor film 3 on the front substrate 1 and the phosphor film 8 on the rear substrate 4 are excited by the ultraviolet rays to emit light.

The dimensions of each part of this embodiment are as follows: the electrode width of the write electrode 2 is 0.1 mm, the electrode width of the sustain electrode 6 is 0.1 mm, the height of the barrier rib 5 is 0.15 mm, the width is 0.1 mm, and the pitch is 0.2 mm. And The numerical values are not limited to these.

FIG. 3 is a partially cutaway perspective view of the second embodiment of the present invention. The second embodiment is an AC discharge type unlike the first embodiment. The writing electrode 2 is covered with a transparent dielectric film 11 made of borosilicate lead glass by a thick film screen printing method. The sustain electrodes 6 on the rear substrate 4 are spray-coated with a positive photosensitive silver paste as in the first embodiment,
The rear substrate 4 is exposed by irradiating it with vertical parallel light, and is developed and baked to form on the side surface of the barrier rib 5. Thereafter, a borosilicate lead glass paste is applied by a thick film screen printing method or a spray method and baked to cover the sustain electrodes 6 with a dielectric film 12. Hereinafter, the phosphor film 8 is formed on the rear substrate 4 corresponding to the discharge cells of the opposing sustain electrodes via the dielectric film 12 by the same method as in the first embodiment. The second embodiment has the advantages that since the electrodes are covered with the dielectric film, the electrodes do not deteriorate due to discharge, and stable memory driving using wall charges can be performed.

[0012]

As described above, according to the present invention, since the sustain electrodes are provided on the side surfaces of the barrier ribs, the discharges are generated in the parallel directions by the phosphor films provided on the front substrate and the rear substrate. Since the body is not affected by the discharge, it is possible to provide a panel that does not deteriorate and has a long life. Further, since phosphors can be arranged on both the front and rear substrates, high brightness display can be performed by using both reflective and transmissive fluorescent light at the same time.

Further, according to the manufacturing method of the present invention, since the positive type conductive photo paste on the side surface of the barrier rib is not exposed to parallel light perpendicular to the substrate, an electrode can be formed on the side surface of the barrier rib without using a special mask. There is. Further, there is an effect that a phosphor film can be formed on the substrate sandwiched by the barrier ribs by using a negative type phosphor photo paste and a mask.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a first embodiment of the present invention.

2 (a) to (g) are diagrams showing a manufacturing process of the present invention.

FIG. 3 is a partially cutaway sectional view of a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of a conventional plasma display panel.

[Explanation of symbols]

 1 Front Substrate 2 Writing Electrode 3,8,21 Phosphor Film 4 Back Substrate 5,22 Barrier Rib 6 Sustaining Electrode 6'Positive Photosensitive Silver Paste 7 Discharge Cell 8'Phosphor Slurry 9 Parallel Light 10 Mask 11,12 Dielectric Membrane 20 X electrode 24 Y electrode

Claims (2)

[Claims] 1. A pair of insulating substrates facing each other across a gas discharge space, barrier ribs parallel to each other are provided on one insulating substrate, and sustain electrodes are provided on side surfaces of the barrier ribs so as to face each other. The plasma display panel is characterized in that the write electrode is disposed so as to intersect with the sustain electrode in a three-dimensional manner, and the phosphor film is disposed at a position corresponding to the discharge cell of the sustain electrode of the pair of insulating substrates. . 2. The barrier rib is formed on one insulating substrate, a positive conductive photo paste is applied to the one insulating substrate including at least a side surface of the barrier rib, and a sustain electrode is formed on the side surface of the barrier rib by photolithography. And a step of forming a phosphor film by a photolithography method by applying a negative type phosphor photo paste to at least the insulating substrate sandwiched by the barrier ribs, and forming a phosphor film by a photolithography method.