Patent ID: 9093346
Filing Date: 2015-07-28
Classification: H01L

Abstract:
1. A photoelectric conversion device comprising: a photoelectric conversion element provided in a semiconductor substrate and including a first semiconductor region of a first conductivity type; a second semiconductor region of the first conductivity type which is provided in contact with the first semiconductor region; a third semiconductor region of the first conductivity type which is provided at a position apart from the second semiconductor region; a fourth semiconductor region of a second conductivity type different from the first conductivity type which is provided between the second semiconductor region and the third semiconductor region; a fifth semiconductor region of the first conductivity type which is provided at a position apart from the third semiconductor region; a sixth semiconductor region of the second conductivity type which is provided between the third semiconductor region and the fifth semiconductor region; a first gate electrode provided on an insulation film on the fourth semiconductor region; and a second gate electrode provided on an insulation film on the sixth semiconductor region, wherein an impurity concentration of the third semiconductor region is lower than that of the fifth semiconductor region, and a depth of a lower-edge of the third semiconductor region from a surface of the semiconductor substrate is larger than a depth of a lower-edge of the fifth semiconductor region from the surface of the semiconductor substrate.