Biometric sensor, display apparatus, and method of fabricating biometric sensor
US11106889B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 17, 2018 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Nov 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/413
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present application provides a biometric sensor. The biometric sensor includes a first base substrate; a second base substrate facing the first base substrate; a plurality of photosensors on the first base substrate and configured to detect at least a portion of a light totally reflected by a surface of the second base substrate facing away the first base substrate, thereby detecting a biometric information; a low refractive index layer on a side of the plurality of photosensors distal to the first base substrate; and a high refractive index layer on a side of the low refractive index layer distal to the first base substrate and directly adjacent to the low refractive index layer. The high refractive index layer includes a material having a refractive index higher than a refractive index of a material of the low refractive index layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.