Conductive paste for conductive substrate or conductive film
US7488434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Apr 30, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/0245
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Membrane switches are manufactured by electrically conductive pastes consisting of 55 to 65% by weight of metal powder in the shape of flake (silver, aluminum, copper or the alloy thereof), 35 to 60% by weight of an organic solvent at high boiling point, 5 to 15% by weight of organic thermal plastic, including mainly saturation polyester polymer, and 0.5 to 5% by weight of additives, including trietheanolamine, adhesion promoter, defoamer, leveling agent, thixotropic agent etc. The silver paste is of excellent adhesion on ITO film or ITO glass, delivers conductivity high up to 20 mΩ/□ with less than 65% by weight of silver, and passes test under the conditions (85□, 85% RH, 1000 hours).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.