High-dynamic-range color image sensors and associated methods
US9954020B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2016 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Dec 30, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high-dynamic-range color image sensor includes (a) a silicon substrate having a photosensitive pixel array with a plurality of first pixels and a plurality of second pixels, (b) a color filter layer disposed on the silicon substrate and including at least (i) a plurality of first color filters positioned above a first subset of each of the plurality of first pixels and the plurality of second pixels and configured to selectively transmit light of a first color and (ii) a plurality of second color filters positioned above a second subset of each of the plurality of first pixels and the plurality of second pixels and configured to selectively transmit light of a second color, and (c) a dynamic-range extending layer disposed on the color filter layer and including grey filters disposed above the second plurality of pixels to attenuate light propagating toward the second plurality of pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.