Pixel array and image sensor
US11134213B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2020 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Feb 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel array includes a plurality of pixels. Each of the pixels includes a photoelectric element formed on a substrate and that generates charge from light, and a pixel circuit formed between the photoelectric element and the substrate and that outputs a digital signal value based on an amount of the generated charge. The pixel circuit includes a floating diffusion formed in the substrate and that stores the charge therein, a vertical pixel electrode that connects the floating diffusion to the photoelectric element and extends in a direction perpendicular to the substrate, an analog-to-digital converter that converts an electric potential of the floating diffusion into the digital signal value, and a memory element that stores the digital signal value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.