Capacitance matched metal wirings in dual conversion gain pixels
US12119360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2020 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Oct 28, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/811
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging device includes a pixel including a photoelectric conversion region, a first transfer transistor coupled to the photoelectric conversion region, a first floating diffusion, a second floating diffusion, a second transfer transistor coupled between the first floating diffusion and the second floating diffusion to control access to the second floating diffusion, a third transfer transistor coupled to the photoelectric conversion region, a third floating diffusion coupled, a fourth floating diffusion, and a fourth transfer transistor coupled between the third floating diffusion and the fourth floating diffusion to control access to the fourth floating diffusion. The imaging device includes a first wiring layer including a first wiring connected to the second floating diffusion, a second wiring connected to the fourth floating diffusion, and a third wiring connected to ground and capacitively coupled with the first wiring and the second wiring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.