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Dielectric material for plasma display plate

A dielectric material, plasma technology, applied in the direction of dielectric/insulating layer, gas discharge electrode, gas discharge tube/container, etc., can solve the problems of easy yellowing, dielectric layer erosion, becoming less dense, etc., to achieve chemical durability Excellent properties, high withstand voltage, and material cost reduction effects

Inactive Publication Date: 2008-04-30
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the dielectric layer is made of glass with weak chemical durability, there will be a problem that the dielectric layer will be corroded by alkaline solution and become less dense.
[0008] In addition, the above-mentioned materials have no problems in the case of thin-film electrodes, but when using silver electrodes, there is a problem that yellowing tends to occur

Method used

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  • Dielectric material for plasma display plate

Examples

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Effect test

Embodiment Construction

[0060] Hereinafter, the present invention will be described based on examples.

[0061] Table 1 shows examples (sample Nos. 1 to 15) and comparative examples (sample Nos. 16 and 17) of the present invention.

[0062]

[0063] Each sample was prepared as follows. First, glass raw materials were prepared to have the composition shown in the table, put into a platinum crucible, and melted at 1300° C. for 2 hours, then the molten glass was formed into a thin plate shape. Next, it was pulverized and classified to obtain a sample composed of glass powder having a maximum particle diameter of 20 μm or less, and the softening point of the glass was measured.

[0064] Various properties were evaluated for the obtained samples. The results are shown in Table 1. Blank columns in the table mean unmeasured items.

[0065] As shown in Table 1, the softening point of the glass of each sample of Examples No. 1 to 15 is 525 to 585° C., and the coefficient of thermal expansion is 73 to 7...

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Abstract

PURPOSE: A dielectric material used for a plasma display panel is provided to easily remove bubbles from a dielectric layer during a burning process, obtain excellent chemical resistance of the dielectric layer and prevent a silver electrode from being browned. CONSTITUTION: A dielectric material used for a plasma display panel has glass powder that contains PbO of 25 to 55%, B2O3 of 10 to 40%, SiO2 of 1 to 15%, ZnO of 3 to 35%, BaO+CaO+MgO+SrO+Bi2O3 of 2 to 30%, Al2O3 of 0 to 10%, and TiO2+ZrO2 of 0.01 to 10%. The content of TiO2 is 0.01 to 10%. The content of BaO is 1 to 30%. The dielectric material further contains ceramic powder. In this case, the content of the glass powder is 90 to 100weight% and the content of the ceramic powder is 0 to 10weight%.

Description

technical field [0001] The present invention relates to dielectric materials for plasma display panels. In particular, it relates to dielectric materials that can be used in both the front dielectric and the address electrode protection dielectric. Background technique [0002] Electrodes for plasma discharge are formed on the front glass plate of the plasma display panel, and a transparent front dielectric layer for sustain discharge is formed thereon. Furthermore, in order to protect the address electrodes, a dielectric layer for protecting address electrodes with withstanding voltage is formed on the rear glass plate, and barrier walls (partition walls) are formed thereon. [0003] The dielectric layer is formed on the front glass plate or the back glass plate at a temperature of 550 to 600°C. Therefore, for the dielectric material, high-lead glass powder suitable for the thermal expansion coefficient of the glass plate and capable of being fired at 550 to 600° C. is us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C12/00C03C3/074C03C14/00G09G3/28C04B35/00C03C8/12C03C8/14C03C8/20C03C17/00C04B35/495H01B3/02H01B3/08H01J11/22H01J11/34H01J11/38
CPCC03C8/14C03C2217/40C03C8/12C03C17/007C03C8/20C04B35/495H01B3/02H01J11/38
Inventor 波多野和夫结城健柴田昭治
Owner NIPPON ELECTRIC GLASS CO LTD