Imaging device and imaging system
US10535688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2019 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Jan 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/1865
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging device includes pixels each including a photoelectric converter that generates charges by photoelectric conversion, a first transfer transistor that transfers charges of the photoelectric converter to a first holding portion, a second transfer transistor that transfers charges of the first holding portion to a second holding portion, and an amplifier unit that outputs a signal based on charges held by the second holding portion. The first transfer transistor is configured to form a potential well for the charges between the photoelectric converter and the first holding portion when the first transistor is in an on-state. The maximum charge amount QPD generated by the photoelectric converter during one exposure period, a saturation charge amount QMEM_SAT of the first holding portion, and the maximum charge amount QGS that can be held in the potential well are in a relationship of: QPD<QGS≤QMEM_SAT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.