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Plasma display and method for producing the same

a technology of display device and plasma, which is applied in the direction of connection contact member material, coupling device connection, instruments, etc., can solve the problems of shortening the plurality of address electrodes, reducing the sealing performance, and degrading the sealing member

Inactive Publication Date: 2010-08-03
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a plasma display device with good display performance even in a fine cell structure like high-definition television. This is achieved by using a sealing member between the plates and an electrode diffusion preventive layer between the sealing member and the electrodes. The electrode diffusion preventive layer prevents shorting or breaking of the electrodes, ensuring favorable display performance during operation. The invention is particularly effective when using electrodes made of silver. The electrode diffusion preventive layer can be made of a dielectric material with a higher softening point than the sealing member, such as glass and an oxide filler. The invention also includes the use of a second dielectric layer between the sealing member and the electrodes to further prevent electrode diffusion."

Problems solved by technology

This may even result in shortening of a plurality of address electrodes 28.
Moreover, the seepage of Ag particles in the sealing member 40 degrades the sealing member 40 and reduces its sealing performance.
This causes the bus line 221 (231) of the display electrode 22 (23) to short out or break, resulting in a decrease in performance of the PDP.
This problem is especially evident with PDPs that have a fine cell structure such as those for use in high-definition television, i.e., PDPs that have very narrow bus lines and address electrodes.

Method used

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  • Plasma display and method for producing the same
  • Plasma display and method for producing the same
  • Plasma display and method for producing the same

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first embodiment

1. First Embodiment

1-1. Construction of Characterizing Portions of a PDP

[0034]An internal construction of a PDP to which the first embodiment of the invention relates is fundamentally similar to that shown in FIG. 5. The difference with the conventional PDP, however, lies in the construction around the sealing member 40. As can be seen in a sectional view of a part of the PDP around the sealing member 40 in FIG. 1, in the first embodiment the sealing member 40 is not in direct contact with the back panel 26, as an electrode diffusion preventive layer 50 is interposed between the sealing member 40 and the back panel glass 27 (and the address electrode 28).

[0035]As one example, the electrode diffusion preventive layer 50 is formed from glass and a filler made of oxides (e.g. Al2O3, TiO2). The softening points (about 560° C.) of these dielectric materials are higher than the melting pointtemperature at which the sealing member melts (about 360° C.) of the frit glass in the sealing memb...

second embodiment

2. Second Embodiment

[0088]While the first embodiment uses the electrode diffusion preventive layer 50, the second embodiment has a construction in which the edges of the dielectric layer 29 have been extended to serve as the electrode diffusion preventive layer, as shown in a top view of FIG. 3 (in the drawing, the number of display electrodes 22 and 23 and the number of address electrodes 28 are fewer than in actual PDPs for purposes of illustration with the electrodes being indicated by solid lines, and the positions of the sealing member 40 and dielectric layer 24 are also indicated by solid lines).

[0089]In more detail, the extended part of the dielectric layer 29 is interposed between the sealing member 40 and each address electrode 28, as shown in a sectional view of the edge part 271 and its vicinity in FIG. 4.

[0090]The dielectric layer 29 in this embodiment has a softening point that is higher than the melting points of the address electrode 28 and sealing member 40temperatur...

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Abstract

A plasma display device has a first plate and a second plate which face each other with a discharge space therebetween, and a sealing member which is provided between the first and second plates to seal the discharge space at edges of the first and second plates. A plurality of electrodes are formed on the inner major surface of the first or second plate. An electrode diffusion preventive layer is formed in each area where the plurality of electrodes cross over the sealing member, so as to avoid direct contact between the plurality of electrodes and the sealing member. As a result, problems such as breaking of the electrodes can be avoided. This construction is especially effective when the electrodes contain Ag.

Description

TECHNICAL FIELD[0001]The present invention relates to a plasma display device such as a plasma display panel used for display, and a manufacturing method for the plasma display device. The invention in particular relates to improvements to a sealing process.BACKGROUND ART[0002]Plasma display panels (PDPs) are a type of plasma display devices. PDPs enable large-screen slimline displays to be produced relatively easily, and so are receiving attention as the coming generation of display panels. Sixty-inch models have already been commercialized.[0003]FIG. 5 is a partially sectional and perspective view showing a main construction of a typical surface discharge AC (alternating current) PDP. In the drawing, the direction z represents the direction along the thickness of the PDP, and the plane xy represents a plane which is parallel with the panel plane of the PDP. As illustrated, the PDP 2 is roughly made up of a front panel 20 and a back panel 26 which are arranged with their major surf...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H01J17/49G09G3/10H01J11/44H01J9/02H01J9/24H01J9/26H01J11/22H01J11/34H01J11/38H01J11/48H01J17/18H01R12/16H01R12/18H01R13/658H01R13/66
CPCH01J9/261H01J11/12H01J11/22H01J11/48H01J9/24H01J11/44
Inventor YAMASHITA, KATSUYOSHISASAKI, YOSHIKIHIBINO, JUNICHIOOKAWA, MASAFUMIAOKI, MASAKI
Owner PANASONIC CORP