Pressure sensitive transducer with pressure sensitive layer including semi-conductive particles
US6121870A · kind A · utility
13Cited by
10References
5Claims
0Family size
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Key dates
| Filing date | Jun 29, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Jun 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Pressure sensitive layers are disposed on respective resin films through electrodes to face each other, and include high conductivity flaky carbon particles and low conductivity amorphous-based carbon particles. The two kinds of carbon particles are bound together by a resin-system binder. Accordingly, when a pushing force is applied to the resin films, an average distance between the carbon particles is decreased to cause a tunnel conduction phenomenon, resulting in a decrease in conductive resistance between the electrodes. As a result, a pressure sensing property can be made gentle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.