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Lead-free glass composition, preparation method and plasma display device using same

A technology of plasma display screen and lead-free glass, which is applied in the field of lead-free glass composition and its preparation, can solve the problems of low brightness of plasma display screen, deviation of bright colors, low reflectivity, etc. The effect of good acid resistance

Inactive Publication Date: 2010-06-02
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reflectivity of the backplane medium currently used is low, and the brightness of the plasma display screen made of this backplane medium is low, and the color vividness is biased. Therefore, it is hoped that a high reflectivity, softening point and thermal expansion coefficient can be developed The glass composition of the glass composition, the back plate dielectric paste prepared with this glass composition covers the electrodes, which can improve the brightness and vividness of the color of the plasma display

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Inorganic glass raw material Bi 2 o 3 56%, B 2 o 3 15%, SiO 2 15%, Al2 o 3 5%, ZnO 7%, NaO 2% put into the mixing tank, mix evenly and pour into Al 2 o 3 The crucible is kept in a solid-phase sintering furnace at 1100°C to 1300°C for 1 hour to obtain a uniform glass liquid. The glass liquid passes through a glass flake machine to obtain glass fragments. These glass fragments are coarsely ground and ball milled for 24 hours with a ball mill to obtain ultrafine Granular lead-free glass powder with a particle size of 3-5 μm.

[0031] The above lead-free glass powder and colorant TiO 2 Mix evenly according to the ratio of 93:7, then add organic vehicle, and mix evenly. Among them, the organic carrier is EC (ethyl cellulose), BCA (butyl carbitol acetate), TE (terpineol), Texanol ester alcohol (2,2,4-trimethyl-1,3 pentadiene alcohol monoisobutyrate), the organic vehicle accounts for 21wt% of the total weight of the lead-free paste. Then, it is rolled by a three-roll...

Embodiment 2

[0034] Inorganic glass raw material Bi 2 o 3 66%, B 2 o 3 12%, SiO 2 10%, Al 2 o 3 3%, ZnO 5%, CaO 2%, NaO 2% put into the mixing tank, mix well and pour into Al 2 o 3 The crucible is kept in a solid-phase sintering furnace at 1100°C to 1300°C for 1 hour to obtain a uniform glass liquid. The glass liquid passes through a glass flake machine to obtain glass fragments. These glass fragments are coarsely ground and ball milled for 24 hours with a ball mill to obtain ultrafine Granular lead-free glass powder with a particle size of 3-5 μm.

[0035] The above lead-free glass powder and colorant TiO 2 Mix evenly according to the ratio of 93:7, then add organic vehicle, and mix evenly. Among them, the organic carrier is EC (ethyl cellulose), BCA (butyl carbitol acetate), TE (terpineol), Texanol ester alcohol (2,2,4-trimethyl-1,3 pentadiene alcohol monoisobutyrate), the organic vehicle accounts for 21wt% of the total weight of the lead-free slurry. Then, it is rolled by a t...

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PUM

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Abstract

The invention provides a lead-free glass composition for covering back panel electrodes of a plasma display screen, a preparation method thereof and a plasma display device using the same. The lead-free glass composition comprises 70-95 wt % of lead-free glass powder and 5-30 wt % of coloring agent. The lead-free glass powder comprises 50-80 wt% of Bi2O3, 5-20 wt% of SiO2, 1-10 wt% of Al2O3, 3-10 wt% of ZnO and 10-30 wt% of B2O3. The coloring agent is TiO2. The softening point of the glass powder of the composition is 450-650 DEG C, the thermal expansion coefficient is 60*10<-7>-90*10<-7> / DEG C at the temperature of 50-350 DEG C. The reflectivity of a sample obtained by printing and sintering of sizing agent prepared by the lead-free glass composition is more than 65%, thus more visible light can be reflected by the plasma display screen to enhance the brightness and color of the display. Furthermore, the sample obtained from the sizing agent prepared by the lead-free glass composition after printing on the glass lens and sintering is with the weight loss not greater than 20% after being soaked in 1wt% of saltpeter solution.

Description

technical field [0001] The invention relates to a lead-free glass composition and a preparation method thereof. Specifically, the invention relates to a lead-free glass composition for covering the back plate electrode of a plasma display screen and a preparation method thereof. The invention also relates to a plasma display device using the lead-free glass composition. Background technique [0002] In recent years, a plasma display (PDP) has attracted attention as one of flat panel displays. It is a flat-panel display that uses the gas discharge phenomenon to produce a visual display. The PDP display screen consists of a front panel, a back panel and many microstructures on it. In order to realize fine image display function, multiple groups of electrodes are formed on the back panel, and these electrodes are processed into thin wires. In order to realize the independent control of each pixel, an insulating layer is formed on the back plate electrode to ensure the insulat...

Claims

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Application Information

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IPC IPC(8): C03C12/00C03C1/04
Inventor 商红凯薛道齐李海燕
Owner SICHUAN COC DISPLAY DEVICES