JP2003142003A - Structure of discharge type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problems of a conventional two board three electrode PDP that lowering of address voltage is difficult because an address electrode and a sustaining electrode are far separated through a discharge space, enhancement of luminous efficiency by a method widening a discharge space and widening a phosphor coating area is impossible, and improvement of a process is difficult because of such structure that the address electrodes must be manufactured before barrier ribs. SOLUTION: The position for forming the address electrode is raised to bring near to the sustaining electrode, in other words, a groove or a recess is formed on both sides of the address electrode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a display cell and a panel of a discharge type display device, so-called PDP.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional PDP has a structure in which a pair of parallel sustain electrode groups are formed on a front substrate and address electrode groups forming an XY matrix are arranged on the rear substrate at right angles. A two-substrate three-electrode PDP having a so-called reflection type fluorescent screen is generally used. In this case, the discharge space coated with the phosphor is a space surrounded by barrier ribs arranged on both sides of the address electrode. Further, the address electrodes are arranged under the phosphor layer, and are inevitably separated from the sustain electrodes on the front surface side by the discharge space defined by the barrier ribs.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
There are many problems to improve. First, regarding the 2-substrate 3-electrode PDP shown in FIG. 5, since the address electrode formed on the rear glass substrate 1 is far away from the front sustain electrode, the address discharge voltage should be lowered. I have trouble. Also, when trying to increase the luminous efficiency by widening the discharge space and the phosphor area,
This structure becomes more and more an obstacle as the distance between the address electrode and the sustain electrode becomes wider.

[0004]

In order to solve the above-mentioned problems, according to the present invention, as shown in FIG. 1, a discharge space is formed by forming stripe-shaped grooves or grid-shaped recesses on both sides of a back side address electrode. By applying a phosphor to the grooves or depressions on both sides of the address electrode, and by providing a suitable space so that the address electrode does not contact the sustain electrode on the front side, The discharge spaces are operated as the same discharge space without being separated by the address electrodes.

[0005]

First Embodiment First, in order to explain the structure of a display cell described in claim 1 of the present invention, FIG. 1 is a developed perspective view showing a first embodiment of a discharge display cell structure of the present invention.
This will be described with reference to FIG. 2 which is a sectional view of this display cell.
Low-layer ribs 2 and partition walls 3 are formed on the rear glass 1. These can be easily obtained by a method such as laminating low melting point glass by screen printing. Address electrodes 4 are formed on the low-layer ribs 2 by a method such as screen printing. In order to operate this electrode as an address electrode, the electrode may be covered with a dielectric layer, but it may be a metal layer as it is. The partition wall 3 needs to be thicker than the thickness of the low-layer rib 2, the address electrode 4, and the phosphor layer 5 stacked,
By doing so, the address electrode 4 does not come into contact with the sustain electrodes 8 and 9 on the front surface side, and the address electrode 4 does not divide the discharge space surrounded by the barrier ribs 3 into two. The phosphor layer 5 is applied to the inner wall surface of the discharge space surrounded by the partition walls 3 along all the wall surfaces including the low-layer ribs 2 and the address electrodes 4. It goes without saying that the phosphor layer 5 is applied thinly so that the discharge space is sufficiently secured.

On the other hand, a sustain electrode is formed on the front surface side in the same manner as a normal PDP. Since this has nothing to do with the present invention, it will be briefly described that the sustain electrodes 8 and 9 are formed on the front glass substrate 10. A transparent electrode material such as indium oxide or an extremely fine electrode is formed by a thin film method such as vapor deposition and chemical etching or a high-definition printing technique so as to prevent light emission as much as possible. Thereafter, these electrodes were formed by a dielectric layer 7 obtained by screen-printing low melting point glass, and a protective film 6 such as magnesium oxide.
It is covered with and completed.

The low-layer ribs 2 or the partition walls 3 may be formed by stacking partition material on the glass substrate as described above.
In this structure, it is not necessary to form an electrode in advance on the bottom surface of the groove surrounded by the partition wall as in a normal PDP, and the electrode may be formed after the partition wall or the like is formed. It can be molded by direct sandblasting, chemical etching or machining.

[0008]

Second Embodiment As described above, in the structure of the present invention, the low-layer ribs 2 and the partition walls 3 can be freely formed by directly sandblasting, chemically etching, or machining the plate glass to form stripe-shaped grooves or lattice-shaped recesses. Therefore, it can be configured as a front glass to have a structure having a so-called transmissive fluorescent screen in which the fluorescent screen 5 is formed on the front side. FIG. 3 is a structural example showing an example of the structure, and FIG.
Is a sectional view thereof. The structure of the panel in this case can be considered to be substantially the reverse of the front side and the back side of FIGS. The glass can be processed by any of sandblasting, chemical etching, or mechanical processing as described above, and since the sustain electrode is formed in a place where it does not interfere with the emission of the phosphor, the sustain electrodes 8 and 9, the dielectric layer 7, The protective film 6 does not need to be transparent. Further, since the address electrode formed on the front surface side is formed between the grooves or the depressions, it is not necessary to make it transparent.

[0009]

According to the structure of the PDP of the present invention, in the structure described in claim 1, as compared with the conventional PDP having the structure shown in FIG. Since the area of No. 5 can be widened by increasing the partition wall surface, the luminance and the luminous efficiency are improved. In addition, the address electrode 4 and XY
Since the distance between the sustain electrodes 8 and 9 forming the matrix can be reduced, the address voltage can be lowered, which is advantageous in driving. Further, in the structure described in claim 2, as shown in Example 2, in addition to the effect described in claim 1, a transparent electrode, a transparent dielectric layer, and a protective film, which are major factors of high cost, are used. Since there is no need to do so, the cost reduction effect is large.

[0010]

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a display cell structure according to the first embodiment.

FIG. 2 is a sectional view of a display cell structure according to the first embodiment.

FIG. 3 is an exploded perspective view of the display cell structure according to the second embodiment.

FIG. 4 is a sectional view of a display cell structure according to a second embodiment.

FIG. 5 is an exploded perspective view of a cell structure of a conventional 2-substrate 3-electrode PDP.

[0011]

[Explanation of symbols]

1 Rear glass substrate 2 Low-rise rib 3 partitions 4 address electrodes 5 Fluorescent layer 6 protective film 7 Dielectric layer 8 Sustain electrodes (1) 9 Sustain electrodes (2) 10 Front glass substrate 11 Grooves or depressions

Claims (2)

[Claims] 1. A structure of a display cell of a discharge type display device, a so-called PDP, is shown in FIG.
Two-substrate three-electrode PDP having a so-called reflection type fluorescent screen in which a group of address electrodes forming a Y matrix is arranged on a rear substrate.
In, in order to form a discharge space by forming a stripe-shaped groove or a grid-shaped recess on both sides of the address electrode on the back side, apply a phosphor to those grooves or recesses on both sides of the address electrode, By providing an appropriate space so that the address electrode does not contact the sustain electrode on the front side, the discharge spaces on both sides of the address electrode can operate as the same discharge space without being separated by the address electrode. The structure of the display cell of the PDP, which is characterized by 2. With respect to the structure of a display cell of a discharge type display device, a so-called PDP, as shown in FIG.
Two-substrate three-electrode PDP having a so-called transmissive fluorescent screen in which a group of address electrodes forming a Y matrix is arranged on the front substrate.
In the above, as the structure of the front side glass substrate, as shown in FIG. 3, the plate glass of the front side substrate is directly sandblasted,
A large number of stripe-shaped grooves or grid-shaped recesses are formed by a method such as chemical etching or mechanical molding, and the grooves or recesses are arranged on both sides of the address electrode to form a discharge space. The discharge space on both sides of the address electrode is the same without being separated by the address electrode by applying a phosphor to the groove or depression and providing an appropriate space so that the address electrode does not contact the sustain electrode on the back side. The structure of the display cell of the PDP is characterized in that the display cell operates as a discharge space.