Image sensor
US7755364B2 · kind B2 · utility
1Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2003 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Mar 20, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor has a plurality of pixels, each pixel having a photodiode (12), a voltage amplifier (16) having gain greater than 1 and a sampling capacitor (18) charged by the voltage amplifier. In this arrangement, each pixel provides gain through voltage amplification. This enables the sampling capacitor (18) to be kept to a low size, so that the pixel circuitry occupies the smallest possible space, thereby enabling large aperture pixels to be formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.