Patent ID: 11916095
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An imaging device, comprising:
a photoelectric converter that generates a charge depending on incident light;
a first charge holding section that is formed near a front surface of a semiconductor substrate, and holds the charge;
a first charge transfer section that transfers the charge from the photoelectric converter to the first charge holding section;
an auxiliary charge holding section that is formed to underlie the first charge holding section in the semiconductor substrate, and holds a portion of the charges held in the first charge holding section;
a transfer route that transfers the charge between the first charge holding section and the auxiliary charge holding section; and
an image signal generator that generates an image signal based on the charges held in the first charge holding section and the auxiliary charge holding section,
wherein semiconductor regions of each of the first charge holding section and the auxiliary charge holding section have a higher impurity concentration than an impurity concentration of a semiconductor region of the photoelectric converter.