Temperature compensating transparent force sensor having a compliant layer
US9690413B2 · kind B2 · utility
20Cited by
10References
22Claims
0Family size
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Key dates
| Filing date | Jun 3, 2015 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Jun 3, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04111
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optically transparent force sensor that may compensate for environmental effects, including, for example, variations in temperature of the device or the surroundings. In some examples, two force-sensitive layers are separated by a compliant layer. The relative electrical response of the two force-sensitive layers may be used to compute an estimate of the force of a touch that reduces the effect of variations in temperature. In some examples, piezoelectric films having anisotropic strain properties are used to reduce the effects of temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.