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Thermosetting electrode paste fireable at a low temperature

A low-temperature firing and electrode paste technology, which is applied in electrode system manufacturing, circuits, photovoltaic power generation, etc., can solve problems such as poor adhesion of ceramic substrates and silicon substrates, slow reaction speed and curing time, and stability of paste viscosity rise. , to achieve the effect of excellent adhesion, better storage stability and excellent curing degree

Inactive Publication Date: 2012-05-23
DONGJIN SEMICHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electrodes produced by heating and curing such electrode pastes have a disadvantage of poor adhesion to ceramic substrates and silicon substrates.
In addition, as far as polyisocyanate (polyisocyanate) used in the manufacture of electrode pastes is concerned, the polyurethane (urethane) compound generated by heating and curing requires a long curing time due to its slow reaction speed, and there is adhesion to the ceramic substrate. problem of reduced sex
[0003] In addition, when an amine-based curing agent is used, there is also a stability problem in that the viscosity of the paste increases due to gradual curing during storage at room temperature (25°C).
When epoxy resin or monomer is used, there is a disadvantage that the pattern electrode is cracked or peeled off from the base material (or substrate) due to the rapid shrinkage of the paste during the thermal curing reaction.
In addition, there is also a problem that the resin is oxidatively decomposed due to the heat energy (200°C to less than 300°C) given during the firing process, thereby causing the problem of electrode detachment.

Method used

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  • Thermosetting electrode paste fireable at a low temperature
  • Thermosetting electrode paste fireable at a low temperature

Examples

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Effect test

Embodiment 1 to 6 and comparative example 1 and 2

[0076] After mixing the components and contents described in the following Table 1 (% by weight), they were mixed and dispersed with a three-roll kneader to prepare an electrode paste.

[0077] Table 1

[0078]

[0079] The specific component names described in the above-mentioned Table 1 are as follows.

[0080] - Silver powder: flaky silver powder with an average particle size of 2.5 μm

[0081] - Cellulosic resin: Hydroxycellulose

[0082] -Acrylic resin: ELVACITE 2045

[0083] - Epoxy resin: bisphenol A resin

[0084] - Acrylic Oligomer and Epoxy Acrylate Oligomer: Mix EBECRYL-1200 with Miramer ME 2010 in a 4:1 weight ratio

[0085] -Acrylic monomer: TMPTA mixed with HDDA at a weight ratio of 7:3

[0086] - Amine curing agent: polyamide

[0087] - Radical initiator 1: Azobisisobutyronitrile

[0088] - Radical Initiator 2: Benzoyl Peroxide

[0089] - Cationic Initiator: Triphenylmethyl Chloride

[0090] - Mercaptan compound: mixture of butanethiol: pentanethiol ...

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Abstract

The present invention relates to a thermosetting electrode paste fireable at a low temperature. The electrode paste according to the present invention has superior adhesion properties, high resolution, low contact resistance, superior storage stability and electrical resistivity, and thus can be widely applied to the fields of radiofrequency identification tags, printed circuit boards, solar cells, etc.

Description

technical field [0001] The present invention relates to a thermosetting electrode paste for low-temperature firing. The electrode paste according to the present invention can exhibit excellent adhesion, high resolution, low contact resistance, excellent storage stability, and resistivity. Background technique [0002] Conventionally, an electrode paste has been produced by mixing a conductive powder, a thermosetting resin such as epoxy resin or polyurethane, a monomer, a curing agent, and a solvent. However, an electrode produced by heating and curing such an electrode paste has a disadvantage of poor adhesion to a ceramic substrate or a silicon substrate. In addition, as for the polyisocyanate (polyisocyanate) used in the manufacture of electrode pastes in the past, the polyurethane (urethane) compound generated by heating and curing requires a long curing time due to the slow reaction speed, and there is adhesion to the ceramic substrate. The problem of reduced sex. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01J9/02H01L31/042
CPCH01B1/20H01L31/022425H01J9/02Y02E10/50
Inventor 黄建镐郑镛埈高旼秀郑美惠
Owner DONGJIN SEMICHEM CO LTD
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