Optical fingerprint identification apparatus and electronic device
US11403869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2019 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Dec 9, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/83851
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
An embodiment of the present application discloses an optical fingerprint identification apparatus and an electronic device, which can improve performance of the optical fingerprint identification apparatus. The optical fingerprint identification apparatus includes: a light detection array; a filter layer, disposed above the light detection array, where the filter layer is integrated with the light detection array in a photosensor chip; a first light blocking layer formed above the filter layer, where the first light blocking layer is provided with a plurality of light passing holes; and a first microlens array disposed above the first light blocking layer, where the first microlens array is configured to converge the optical signal to the plurality of light passing holes of the first light blocking layer, and the optical signal is transmitted to the light detection array through the plurality of light passing holes of the first light blocking layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.