Optics-based fingerprint sensor, electric device including optics-based fingerprint sensor, and operation method of electric device
US10643051B2 · kind B2 · utility
1Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2018 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Sep 21, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8023
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optics-based fingerprint sensor may include a first photodiode, a first metal shield structure that is formed on the first photodiode and includes a first opening, a first color filter structure that is formed on the first metal shield structure and including a second opening exposing the first opening, a second photodiode that is spaced apart from the first photodiode by a predetermined distance, a first nano-optical filter structure that is formed on the second photodiode, and a first band limit filter structure that is formed on the nano-optical filter structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.