Optical fingerprint recognition sensor
US10438042B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Feb 2, 2017 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Feb 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1365
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical fingerprint recognition sensor may improve internal light utilization efficiency and includes: a glass substrate; a protection layer that is positioned on the glass substrate; an active layer that is positioned above the glass substrate and in the protection layer; and a functional layer that is positioned in the protection layer and on the active layer and that includes a first transparent oxide layer and a first metal layer that are sequentially stacked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.