JP3057891B2 - Plasma display panel and method of manufacturing the same - Google Patents

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, a phosphor film arrangement structure, and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, this type of color plasma display panel has an X electrode 2 on a front substrate 1 as shown in FIG.
0 and a phosphor film 21, and a Y electrode 24 is disposed on a rear substrate 4 facing the rear substrate 4 at a predetermined interval by a barrier rib 22.
The phosphor film 21 is excited by ultraviolet rays generated by the discharge between the electrode 20 and the Y electrode 24 to emit light, and the phosphors emitting red, green, and blue colors are separately applied by discharge cells to form a multicolor display. Alternatively, a full-color display is used (for example, Japanese Utility Model Application Laid-Open No. 2-133855).
No.). The X electrode 20 is formed by depositing ITO, Al, Au, or the like and then forming the X electrode 20 by photolithography.
A method of forming a tin oxide film doped with b, F, or the like by a CVD method is employed. 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 provided only on the front substrate, the luminance is low, and the phosphor film is formed on a surface perpendicular to the discharge direction. Therefore, there is a disadvantage that the phosphor is deteriorated 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 opposed to each other with a gas discharge space therebetween, and barrier ribs parallel to each other are disposed on one of the insulating substrates. The sustain electrodes are disposed so as to face each other, the write electrodes are disposed so as to three-dimensionally intersect with the sustain electrodes, and the phosphor films are disposed at positions of the pair of insulating substrates corresponding to the discharge cells of the sustain electrodes. ing.

In a method of manufacturing a plasma display panel according to the present invention, a barrier rib is formed on one insulating substrate, and a positive-type conductive photo paste is applied to at least one insulating substrate including at least the side surface of the barrier rib. Forming a sustain electrode on the side surface of the barrier rib, and applying a negative phosphor photopaste to at least an insulating substrate sandwiched between the barrier ribs to form a phosphor film by a photolithography method.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway perspective view of the first embodiment of the present invention. The write electrode 2 is provided on the front substrate 1. Barrier ribs 5 are formed on rear substrate 4 so as to cross write electrodes 2, and sustain electrodes 6 are formed on both side surfaces of barrier ribs 5. Phosphor films 3 and 8 are formed on front substrate 1 and rear substrate 4 corresponding to discharge cells 7 of sustain electrodes 6. The writing electrode 2 is formed of a tin oxide film by a 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 for 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 illustrating steps of a method for manufacturing a plasma display panel according to the present invention. As shown in FIG. 2A, a rear rib 4 made of fine particles of ceramics such as alumina or zirconia and a glass powder having a low softening point is printed on a rear substrate 4 made of a glass plate by a thick film screen printing method and then fired. Thus, barrier ribs 5 were 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. 2 (c), after drying the positive photosensitive silver paste 6 ', the rear substrate 4 is exposed to parallel light 9 perpendicular thereto. Thereafter, development is performed and sintering is performed. 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 provided 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 a 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 write electrode 2 made of tin oxide doped with Sb is formed on a front substrate 1 by a CVD method.
A phosphor film 3 patterned into a predetermined pattern by a photolithography method is formed near the write electrode. The front substrate 1 and the rear substrate 4 shown in FIG. 2 (g) are opposed to each other so that the phosphor films 3 and 8 are inside, and the surroundings are hermetically sealed, and then a rare gas that can be discharged inside. For example, a plasma display panel is completed by enclosing, for example, He-Xe gas or Ne-Xe.

[0009] Now apply a slightly lower rectangular voltage V _S from the discharge start voltage between both sustain electrodes whose phases are reversed to each other between the two sustain electrodes 6 of PDP fabricated in the manner described above. Although no discharge in this state, the potential difference between one and applied to the electrodes write a rectangular voltage V _W obtained by inverting the voltage and phase are electrodes 2 and sustain electrodes 6 of the sustain electrode 6 to the write electrode 2 is discharged When applied so as to be higher than the starting voltage, the write electrode 2 and the sustain electrode 6
Discharge occurs at the intersection with. Then, a discharge is generated between the two sustain electrodes 6 using the discharge as a trigger. At this time, V
_{If S} is set to a voltage higher than the sustaining voltage between the sustaining electrodes 6, the discharge is maintained even after _VW becomes zero, and the cell is in the selected state. In the selected cell, ultraviolet light is 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 light to emit light.

The dimensions of each part in 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 In addition, it is not limited to these numerical values.

FIG. 3 is a partially cutaway perspective view of a second embodiment of the present invention. The second embodiment is of an AC discharge type unlike the first embodiment. The write electrode 2 is covered with a transparent dielectric film 11 made of borosilicate lead glass by a thick film screen printing method. The sustain electrode 6 of the rear substrate 4 is spray-coated with a positive photosensitive silver paste as in the first embodiment,
The rear substrate 4 is exposed by irradiating with parallel light perpendicular thereto, and is developed and fired 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 spraying method and baked, and the sustain electrode 6 is covered with the dielectric film 12. Thereafter, the phosphor film 8 is formed on the rear substrate 4 corresponding to the discharge cell of the opposed sustain electrode via the dielectric film 12 in the same manner as in the first embodiment. The second embodiment has the advantages that the electrodes are covered with the dielectric film, so that the electrodes do not deteriorate due to the discharge, and that a stable memory drive utilizing wall charges can be performed.

[0012]

As described above, according to the present invention, since the sustain electrodes are disposed on the side surfaces of the barrier ribs, discharge occurs in parallel directions with the phosphor films disposed on the front substrate and the rear substrate. Since the body is not subjected to the impact of electric discharge, it is possible to provide a panel which does not deteriorate and has a long life. In addition, since the phosphor can be provided on both the front and rear substrates, high-luminance display can be performed by simultaneously using both the reflection type and the transmission type fluorescent light.

Further, the manufacturing method of the present invention has an advantage that the positive type conductive photo paste on the side surface of the barrier rib is not exposed to parallel light perpendicular to the substrate, so that 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 between the barrier ribs by using a negative phosphor photo paste and a mask.

[Brief description of the drawings]

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

FIGS. 2 (a) to 2 (g) are views 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]

 Reference Signs List 1 front substrate 2 writing electrode 3, 8, 21 phosphor film 4 rear 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 Film 20 X electrode 24 Y electrode

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01J 17/49 H01J 9/02 H01J 9/227

Claims (2)

(57) [Claims] 1. A semiconductor device comprising: a pair of insulating substrates facing each other across a gas discharge space; barrier ribs parallel to each other disposed on one of the insulating substrates; and sustain electrodes disposed on side surfaces of the barrier ribs so as to face each other. A plasma display panel, wherein a write electrode is disposed so as to three-dimensionally intersect with the sustain electrode, and a phosphor film is disposed on the pair of insulating substrates at positions corresponding to the discharge cells of the sustain electrode. . 2. The barrier rib is formed on one of the insulating substrates, a positive conductive photo paste is applied to the one of the insulating substrates including at least the 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 applying a negative phosphor photopaste to at least the insulating substrate sandwiched between the barrier ribs to form a phosphor film by a photolithography method.