Digitally-calibrated CTIA image sensor pixel
US11570391B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Mar 11, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/811
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel circuit includes a photoelectric conversion device; an amplifier including a first amplifier transistor and a second amplifier transistor connected in series between a first voltage and a second voltage, wherein a gate terminal of the first amplifier transistor is connected to the photoelectric conversion device; a feedback capacitor connected between a first current terminal of the first amplifier transistor and the photoelectric conversion device; a first reset switch connected between the gate terminal of the first amplifier transistor and an anode voltage; and a second reset switch connected between a first current terminal of the second amplifier transistor and a gate terminal of the second amplifier transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.