Shared amplifier pixel with matched coupling capacitances
US7238926B2 · kind B2 · utility
13Cited by
0References
11Claims
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Key dates
| Filing date | Apr 5, 2006 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Apr 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of making an image sensor, the method includes the steps of providing a plurality of pixels each with a photodetector; providing an amplifier that is shared between the plurality of photodetectors; providing a transfer gate associated with each photodetector; providing a charge-to-voltage conversion region that is shared between the plurality of photodetectors; determining a capacitance between each transfer gate and the charge-to-voltage conversion region; and modifying the capacitance to be substantially the same by altering a physical structure within one or more pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.