Conductive paste for use in membrane touch switch applications
First Claim
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1. A thick film paste for membrane touch switch comprising:
- a) electrically conductive powder;
b) phenoxy resin;
c) urethane resin; and
d) an organic solvent, in which the above a), b) and c) are dissolved or dispersed
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Abstract
A thick film paste for membrane touch switch (MTS) uses includes: a) electrically conductive powder; b) phenoxy resin; c) urethane resin; and d) an organic solvent, in which the above a), b) and c) are dissolved or dispersed. MTS made from the paste shows excellent properties such as low resistivity and low resistivity change after creasing. In addition, the content of halogen is very low.
27 Citations
9 Claims
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1. A thick film paste for membrane touch switch comprising:
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a) electrically conductive powder; b) phenoxy resin; c) urethane resin; and d) an organic solvent, in which the above a), b) and c) are dissolved or dispersed - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for producing a circuit and/or electrode of membrane touch switch, comprising the steps of:
applying a thick film paste comprising a) electrically conductive powder;
b) phenoxy resin;
c) urethane resin; and
d) an organic solvent, in which the above a), b) and c) are dissolved or dispersed on a substrate of membrane touch switch; and
drying the applied thick film paste to vaporize the organic solvent
Specification
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Current AssigneeE. I. du Pont de Nemours and Company (Corteva, Inc.)
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Original AssigneeE. I. du Pont de Nemours and Company (Corteva, Inc.)
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InventorsOgiwara, Toshiaki
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Application NumberUS12/005,530Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current427/77CPC Class CodesH01B 1/22 the conductive material com...H05K 1/095 for polymer thick films, i....
