Fingerprint sensor and display device including the same
US10572085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2018 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Aug 25, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint sensor including first, second, and third lines, and a unit sensor coupled to the first, the second, and the third lines. The unit sensor includes a pixel electrode coupled between the first line and the second line, a first capacitance element coupled between the first line and the pixel electrode, a second capacitance element coupled between the second line and the pixel electrode, a switching element coupled between the pixel electrode and one of the first line, the second line, a first line of an adjacent unit sensor, and a second line of the adjacent unit sensor, and including a control electrode coupled to the third line, and a third capacitance element coupled between the third line and the pixel electrode, in which at least one of the first and the second capacitance elements includes a variable capacitance element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.