Optical fingerprint sensor
US10678378B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2018 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Apr 24, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention provides an optical fingerprint sensor including: an image sensing layer having an array composed of a plurality of sensing blocks; a collimating layer disposed on the image sensing layer and having a plurality of through holes penetrating from the top surface to the bottom surface of the collimating layer; a light guiding layer disposed in the collimating layer, and a glass cover layer disposed on the light guiding layer, the top surface of the glass cover layer receiving a finger touch, wherein the image resolution of the optical fingerprint sensor is defined by the number of sensing blocks, and there are a plurality of through holes directly above each of the sensing blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.