Fingerprint sensing device
US11126813B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Apr 6, 2020 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Apr 6, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1318
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a fingerprint sensing device. A control circuit controls a part of point light sources to irradiate a fingerprint of a user. Reflected light generated by using the plurality of point light sources to irradiate the fingerprint of the user forms a light-emitted pattern including a plurality of reflected light patterns on a sensing layer, wherein each of the reflected light patterns is provided by a corresponding point light source, and each of the sensing units senses the reflected light patterns corresponding to at least two point light sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.