Pixel readout circuit, method of driving the same, and image sensor
US11006063B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2018 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Feb 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel readout circuit including a reset circuit configured to reset a first node to a first power supply voltage in response to a signal on a first scan line being active; a photodetector configured to generate, responsive to incident light, a charge signal and integrate the charge signal, the integrated charge signal causing a change in a voltage level at the first node; a photosensitive circuit configured to generate a pixel current in response to the change in the voltage level at the first node; and a switch circuit configured to transfer the pixel current to a signal readout line for readout in response to a signal on a second scan line being active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.