Patent ID: 11942492
Assignee: SK HYNIX INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image sensing device comprising:
a semiconductor substrate;
a photoelectric conversion region supported by the semiconductor substrate and structured to generate charge carriers from incident light and capture the charge carriers using an electric potential difference caused by a demodulation control signal applied to the photoelectric conversion region; and
a circuit region supported by the substrate and disposed adjacent to the photoelectric conversion region, the circuit region including a plurality of pixel transistors that generate and output a pixel signal corresponding to the charge carriers captured by the photoelectric conversion region,
wherein the circuit region includes:
a first well region formed to have a first length in a first direction; and
a second well region formed below the first well region such that a lower end of the first well region is in contact with an upper end of the second well region, and formed to have a second length shorter than the first length in the first direction.