Image sensor precharge boost
US10110783B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2017 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Mar 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/771
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Image sensors with precharge boost are disclosed herein. An example image sensor may include pixels that each include a photodiode to receive image light and produce image charge in response, a floating diffusion to receive the image charge, a transfer gate to couple the photodiode to the floating diffusion in response to a transfer control signal, a reset gate to couple a reset voltage to the floating diffusion in response to a reset control signal, and a boost capacitor coupled between the floating diffusion and a boost voltage source, wherein, during a precharge operation, the boost voltage is provided to the boost capacitor for a portion of time the transfer gate is enabled and while the reset gate is disabled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.