Imaging device
US10347679B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Jul 18, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging device includes a plurality of pixels two-dimensionally disposed. At least part of the plurality of pixels includes a first photoelectric conversion unit and a second photoelectric conversion unit provided in a semiconductor substrate and each including a first semiconductor region of a first conductivity type for accumulating a signal charge, a first isolation region provided in the semiconductor substrate between the first photoelectric conversion unit and the second photoelectric conversion unit and including a second semiconductor region forming a first potential barrier for the signal charge in the first semiconductor region, and a second isolation region provided in the semiconductor substrate between the first photoelectric conversion unit and the second photoelectric conversion units and including a trench isolation forming a second potential barrier higher than the first potential barrier for the signal charge in the first semiconductor region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.