Patent ID: 9711558
Date: 2017-07-18
CPC Classifications: H01L

Claim:
1. An imaging device comprising: unit pixel cells arranged one-dimensionally or two-dimensionally, each of the unit pixel cells comprising: a semiconductor substrate including a first conductivity type region of a first conductivity type, a first impurity region of a second conductivity type provided in the first conductivity type region, and a second impurity region of the second conductivity type provided in the first conductivity type region; a photoelectric converter located above the semiconductor substrate; and a first transistor including a first gate electrode and at least a part of the second impurity region as any one of a source and a drain of the first transistor, wherein the first impurity region is at least partially located in a surface of the semiconductor substrate, the first impurity region being electrically connected to the photoelectric converter, the second impurity region is electrically connected to the photoelectric converter via the first impurity region, the second impurity region having an impurity concentration lower than an impurity concentration of the first impurity region, and a first portion of the second impurity region overlaps a second portion of the first gate electrode in a plan view.