Imaging device and imaging system

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.

Dependencies are inferred from the claim text.