Press sheet for fingerprint reader and fingerprint reader
US10061964B2 · kind B2 · utility
5Cited by
3References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 10, 2015 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Sep 25, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1318
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A press sheet for fingerprint reader and a fingerprint reader are provided. The press sheet includes a transparent substrate, a microstructure layer, and a diffusion layer. The transparent substrate has a first surface and a second surface, and the first surface faces towards an optical imaging apparatus. The microstructure layer is disposed on the first surface of the transparent substrate, and the diffusion layer contains diffusion particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.