Two level TX low control for simultaneous improved noise and dark current
US11265494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2020 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Jul 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor includes a controller and a plurality of pixel clusters. Each of the pixel clusters includes a plurality of pixels coupled to a reset transistor, a floating diffusion node, a source follower, and a select transistor. Each pixel of a pixel cluster includes a photodiode, and a transfer transistor having a first terminal coupled to the photodiode, a second terminal coupled to the floating diffusion node, and a gate. The controller is configured to apply a transfer control signal to the gate of the transfer transistor in response to a pixel operation, the transfer control signal being one of a positive voltage level, a negative voltage level, and a ground voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.