Color filter array patterns for enhancing a low-light sensitivity while preserving a color accuracy in image signal processing applications
US11650360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2019 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Jun 28, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Color filter array patterns are provided for enhancing an image sensor's light sensitivity while preserving a color accuracy for image signal processing applications. In one example, an image sensor can include a substrate layer containing a first set of photodiodes and a second set of photodiodes, wherein each of the first set of photodiodes is larger than each of the second set of photodiodes; a first color filter array (CFA) covering the first set of photodiodes, wherein the first CFA includes a first set of color filters and a portion of the first set of color filters includes one or more clear filters; a second CFA covering the second set of photodiodes, wherein the second CFA includes a second set of color filters that is different than the first set of color filters; and one or more lenses covering the first CFA and the second CFA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.