Active matrix capacitive fingerprint sensor with 2-TFT pixel architecture for display integration
US9946375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2015 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Apr 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1318
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments described herein include an input device including an array of sensing pixels configured to sense an input object in a sensing region. Each of the sensing pixels includes a sense element and a first transistor, wherein the first transistor includes a gate terminal connected to a row select line and a second terminal connected to the sense element. Each of the sensing pixels also includes a second transistor, wherein the second transistor includes a gate terminal connected to the sense element and the second terminal of the first transistor, and wherein the second transistor further includes a second terminal connected to a column output line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.