Calibration method for fingerprint sensor and display device using the same
US11580722B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2022 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Apr 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided herein are a calibration method for a fingerprint sensor and a display device using the calibration method, where, in the calibration method for a fingerprint sensor, the fingerprint sensor includes a substrate, a light-blocking layer located on a first surface of the substrate and having openings formed in a light-blocking mask, a light-emitting element layer located on the light-blocking layer and having a plurality of light-emitting elements, and a sensor layer located on a second surface of the substrate and having a plurality of photosensors; and the calibration method includes generating calibration data through white calibration and dark calibration, and applying offsets to the plurality of photosensors using the calibration data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.