Image sensor for stabilizing a black level
US8729678B2 · kind B2 · utility
19Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2012 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Sep 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/807
Abstract
An image sensor includes first pixels, second pixels and a deep trench. The first pixels are formed in an active region of a semiconductor substrate, and configured to measure photo-charges corresponding to incident light. The second pixels are formed in an optical-black region of the semiconductor substrate, and are configured to measure black levels. The deep trench is formed vertically in a boundary region of the optical-black region, where the boundary region is adjacent to the active region, and configured to block leakage light and diffusion carriers from the active region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.