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Method for directly preparing two-layer electrode by one-time silk-screen printing and used slurry thereof

A double-layer electrode and slurry technology, which is applied in the directions of gas discharge electrodes, electrode system manufacturing, sustain/scan electrodes, etc., can solve the problems of complex process and achieve the effect of simple process and low cost

Inactive Publication Date: 2011-05-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem in the prior art that the process is complicated and the second screen printing needs to be performed after the first screen printing is dried, the present invention provides a method for directly preparing a double-layer electrode by one screen printing and the paste used therein. It has the characteristics of simple process, one-time screen printing, low equipment requirements and low cost.

Method used

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  • Method for directly preparing two-layer electrode by one-time silk-screen printing and used slurry thereof
  • Method for directly preparing two-layer electrode by one-time silk-screen printing and used slurry thereof
  • Method for directly preparing two-layer electrode by one-time silk-screen printing and used slurry thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Preparation of medium temperature glass powder:

[0085] The raw materials are weight ratio Bi 2 o 3 65%, SiO 2 6%, B 2 o 3 10%, ZnO 15%, BaO 2.5%, Al 2 o 3 1.5%, grind and mix well in a porcelain mortar. Put this batch material into a high alumina crucible, and melt it at 1000°C for 2 hours to melt into a glass state. Pour the molten glass into cold water, dry the glass slag in an incubator, mill it with a planetary ball mill until the particle size is about 1 μm, and dry it for later use. The melting temperature of glass is 450°C

[0086] Preparation of low temperature black glass powder:

[0087] The raw materials are weight ratio Bi 2 o 3 68%, SiO 2 14%, B 2 o 3 12%, ZnO 6%, grind and mix well in a porcelain mortar. Put this batch material into a high alumina crucible, melt at 1000°C for 2 hours, and melt into a glass state. Pour the molten glass into cold water, dry the glass slag in an incubator, mill it with a planetary ball mill until the ...

Embodiment 2

[0094] Preparation of medium temperature glass powder:

[0095] The raw materials are weight ratio Bi 2 o 3 65.4%, SiO 2 5.3%, B 2 o 3 14.3%, ZnO 12.1%, BaO 1.75%, Al 2 o 3 1.15% Grind in a porcelain mortar and mix well. Put this batch material into a high alumina crucible, and melt it at 1000°C for 2 hours to melt into a glass state. Pour the molten glass into cold water, dry the glass slag in an incubator, mill it with a planetary ball mill until the particle size is about 1 μm, and dry it for later use. The melting temperature of glass is 470 °C.

[0096] Preparation of low temperature black glass powder:

[0097] Prepared according to Example 1.

[0098] Prepare the organic vehicle:

[0099] Prepared according to Example 1.

[0100] Preparation of photosensitive silver paste:

[0101] 4.0% medium-temperature lead-free glass powder, 10% low-temperature black glass powder, 56.0% silver powder, 5% ethoxylated trimethylolpropane triacrylate, 1-p-methyl...

Embodiment 3

[0104] Preparation of medium temperature glass powder:

[0105] Prepared according to Example 1.

[0106] Preparation of low temperature black glass powder:

[0107] The raw materials are weight ratio Bi 2 o 3 73.6%, SiO 2 6.2%, B 2 o 3 6.2%, ZnO 14%, grind and mix well in a porcelain mortar. Put this batch material into a high alumina crucible, melt at 1000°C for 2 hours, and melt into a glass state. Pour the molten glass into cold water, dry the glass slag in an incubator, mill it with a planetary ball mill until the particle size is about 1 μm, and dry it for later use. The lead-free glass powder with a weight ratio of 95% and 5% Co 3 o 4 Grind and mix evenly in a porcelain mortar, put into a high alumina crucible, and melt at 1000 °C for 1 hour. The glass liquid was quenched in water, and after being ball-milled in a planetary ball mill to an average particle size of 2 μm, the glass powder was dried in an incubator. The melting temperature of glass powder...

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Abstract

The invention discloses a method for directly preparing a two-layer electrode by one-time silk-screen printing and used slurry thereof. The slurry is composed of low-temperature black glass powder, medium-temperature lead-free glass powder, photosensitive monomer, photoinitiator, organic carrier and the balance of sliver powder, wherein the organic carrier is composed of plasticizer, coupling agent, resin and the balance of organic solvent; and the low-temperature black glass powder is obtained by the following steps: adding the lead-free glass powder with a low melting point to a black pigment, melting the mixture, then pouring the molten glass into cold water for water quenching, ball milling the obtained product until the grain diameter is less than or equal to 3mu m, and drying. The method comprises the following steps: evenly dispersing and mixing all components and rolling by three rollers; testing the fineness and viscosity of the slurry; printing the prepared slurry silk screen on a substrate, drying, exposing and developing; and sintering, wherein the peak temperature during first-stage sintering is higher than the melting temperature of the low-temperature black glass powder, and the peak temperature during second-stage sintering is higher than the melting temperature of the medium-temperature lead-free glass powder to obtain the two-layer electrode. The method provided by the invention can obtain the graph of the two-layer electrode only by one-time printing, exposing, developing, two-stage sintering and drying.

Description

[0001] technical field [0002] The invention relates to a photosensitive silver paste for preparing a double-layer electrode, in particular to a paste and a preparation method which can directly prepare a double-layer electrode by one-time screen printing. [0003] Background technique [0004] In the plasma display manufacturing process, the front substrate electrode is a double-layer electrode, that is, a black matrix and a bus electrode. [0005] To prepare another layer of electrodes on one layer of electrodes, usually the traditional preparation methods are sputtering and evaporation, but the preparation cost is high and it is not suitable for industrial production. At present, the commonly used method is screen printing method. Generally, one layer of electrodes is printed first, and then another layer of electrodes is printed on top of the original electrode after drying. Since the width of the electrode pattern is very thin, accurate alignment is required during th...

Claims

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Application Information

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IPC IPC(8): H01J17/04H01J9/02
CPCH01J11/24C03C3/066C03C8/04C03C8/22H01J9/02H01J11/12
Inventor 林保平唐霁楠
Owner SOUTHEAST UNIV
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