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conductive ink

A conductivity and ink technology, applied in the direction of conductive pattern formation, ink, conductive materials dispersed in non-conductive inorganic materials, etc., can solve problems such as complicated steps

Active Publication Date: 2021-01-26
BANDO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in addition to complicated steps, this method also requires the use of expensive vacuum equipment

Method used

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Examples

Experimental program
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Effect test

preparation example 1

[0147] 8.9 g of 3-methoxypropylamine (reagent grade 1 manufactured by Wako Pure Chemical Industries, Ltd., carbon number: 4, logP: -0.5), and 0.3 g of Dispa as a polymer dispersant DISPERBYK-111 was mixed and fully stirred with a magnetic stirrer to generate an amine mixture (relative to the silver, the molar ratio of the added amine was 10). Then, while stirring, 3.0 g of silver oxalate was added. After silver oxalate was added, stirring was continued at room temperature, whereby the silver oxalate was changed into a viscous white substance, and the change was visually confirmed to be complete in appearance, and the stirring was terminated at this point (the first step).

[0148] The obtained mixed solution was transferred to an oil bath, and heated and stirred at 120°C. Immediately after starting the stirring, the reaction accompanied by the generation of carbon dioxide was started, and then the stirring was continued until the generation of carbon dioxide was completed, t...

preparation example 2

[0151] 8.9 g of 3-methoxypropylamine (reagent grade 1 manufactured by Wako Pure Chemical Industries, Ltd., carbon number: 4, logP: -0.5), and 0.3 g of Dispa as a polymer dispersant DISPERBYK-102 was mixed and fully stirred with a magnetic stirrer to generate an amine mixture (relative to silver, the molar ratio of the added amine was 5). Then, while stirring, 3.0 g of silver oxalate was added. After silver oxalate was added, stirring was continued at room temperature, whereby the silver oxalate was changed into a viscous white substance, and the change was visually confirmed to be complete in appearance, and the stirring was terminated at this point (the first step).

[0152] The obtained mixed solution was transferred to an oil bath, and heated and stirred at 120°C. Immediately after starting the stirring, the reaction accompanied by the generation of carbon dioxide was started, and then the stirring was continued until the generation of carbon dioxide was completed, thereb...

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Abstract

The present invention provides a conductive ink for transfer printing, which can calcinate a conductive film pattern having sufficient conductivity and good adhesion to a substrate at a low temperature. The conductive ink for transfer printing includes metal particles, a solvent containing ethanol, and 0.1% by mass to 3.0% by mass of a high boiling point solvent having a hydroxyl group.

Description

technical field [0001] The present invention relates to a conductive ink, which is used to form wiring or electrode patterns of semiconductor integrated circuits and the like, and can form wiring or electrode patterns on organic thin film transistor substrates. More specifically, the present invention relates to a conductive ink that can be suitably used for forming wiring or electrode patterns using a transfer printing method including a reverse printing method. Background technique [0002] Conventionally, a method is known in which a metal thin film is formed on the entire surface of a substrate by sputtering or vapor deposition, and then an unnecessary portion is etched by photolithography to form a desired conductive film pattern. However, this method requires the use of an expensive vacuum device in addition to complicated steps. [0003] Therefore, simpler and less expensive methods of forming conductive film patterns have been sought, and methods using printing meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52H01B1/22H05K1/09H05K3/12
CPCC09D11/52H01B1/22H05K1/09H05K3/12
Inventor 新谷祐树
Owner BANDO CHEM IND LTD
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