Force touch sensing structure, force touch display device, and force touch sensing method using same
US10534470B2 · kind B2 · utility
3Cited by
1References
17Claims
0Family size
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Key dates
| Filing date | Jun 21, 2018 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Jul 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A force touch sensing structure which is immune to changes in sensitivity caused by external factors defines a force touch sensing area. The force touch sensing structure includes protrusions in the force touch sensing area, at least one image recognition camera, and a processor. A height of at least one protrusion varies when the force touch sensing area is force touched. The image recognition camera detects positions of the height-varied protrusions and the extent of the variations. The processor receives and processes signals from the at least one image recognition camera to obtain force touch position and touch force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.