Dielectric glass powder for plasma display panel

A display panel and glass frit technology, applied in the fields of dielectric paste and dry film, low dielectric constant dielectric glass frit, lead-free and bismuth-free, can solve the problems of increased product cost, high price of bismuth oxide, and reduced ineffective power consumption , The effect of improving luminous efficiency and low dielectric constant

Inactive Publication Date: 2013-12-25
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of bismuth oxide, the product cost increases

Method used

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  • Dielectric glass powder for plasma display panel
  • Dielectric glass powder for plasma display panel
  • Dielectric glass powder for plasma display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Preparation of glass powder and related performance test

[0048] First, 25wt% (wt%) of ZnO, 31.5wt% of B 2 o 3 , 15.5wt% SiO 2 , 12.1wt% BaO, 10.8wt% K 2 O, 3.5 wt% Al 2 o 3 , 0.3wt% CuO, 0.3wt% CoO, 0.8wt% Li 2 O, 0.2wt% CeO 2 , Weigh various oxides, add to the V-type mixer and mix until uniform. The raw materials of various components in the glass powder come from zinc oxide, boric anhydride, silicon dioxide, barium carbonate, potassium carbonate, etc. Then, place the platinum crucible in a sintering furnace to preheat for a period of time until the temperature of the platinum crucible reaches the temperature in the furnace. The preheating time is usually related to the outer cladding of the crucible and the size and power of the furnace body, usually more than 5 minutes. Then take out the platinum crucible, pour the uniformly mixed raw materials into the platinum crucible, and then put it into a sintering furnace for melting. The preheating and melting tempe...

Embodiment 2-10

[0060] The same operation as the above-mentioned Example 1 was adopted, except that the glass frit and the dielectric paste used in Examples 2-10 were prepared according to the contents of the components listed in Table 1.

[0061] Table 1 shows the component compositions of Examples 1-10 of the glass frit used in the present invention, where the percentages refer to weight percentages (wt%).

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Abstract

The invention provides dielectric glass powder for a plasma display panel, front panel dielectric slurry containing the dielectric glass powder, resin and solvent, and a dry film. The dielectric glass powder contains 25 to 35 weight percent of ZnO, 25 to 32 weight percent of B2O3, 9 to 16 weight percent of SiO2, 9 to 13 weight percent of BaO, 6 to 12 weight percent of K2O, 3 to 6 weight percent of Al2O3, 0.3 to 1 weight percent of CoO and 0.3 to 1 weight percent of CuO. Moreover, the glass powder can also contain 0 to 3 weight percent of Li2O, 0 to 2 weight percent of CeO2 and 0 to 1 weight percent of Mn2O3. The invention also provides the plasma display panel of a dielectric layer made of the glass powder. The glass powder prepared by using the formula provided by the invention does not contain toxic or harmful heavy metals such as lead, bismuth and the like, so that the cost is low; and the sintered front panel dielectric layer has low dielectric constant and low corresponding preparation thickness, meanwhile, the luminous efficiency of a plasma display is obviously improved.

Description

technical field [0001] The invention relates to a dielectric material, more specifically, to a lead-free, bismuth-free, low dielectric constant dielectric glass powder for a plasma display panel, and a dielectric slurry and a dry film comprising the dielectric glass powder. The present invention also relates to a plasma display comprising a dielectric layer formed of the dielectric glass frit, dielectric paste and dry film. Background technique [0002] In recent years, among color display devices used for image display on computers and televisions, plasma display panels (PDP for short) are increasingly attracting attention as thin and large flat-panel color display terminal devices. [0003] The plasma display panel has a front glass substrate and a scanning electrode for discharge formed on the substrate, and a front plate dielectric layer with a thickness of 20-30 μm is formed on the scanning electrode. For the front plate dielectric layer, it is required to have high vi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J17/16H01J11/38H01J17/49
Inventor 曹建
Owner SICHUAN COC DISPLAY DEVICES
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