Patent ID: 11869917
Assignee: QUANTUM-SI INCORPORATED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 23:
24. An integrated circuit, comprising:
a first pixel comprising:
a first photodetection region;
a first charge storage region electrically coupled to the first photodetection region and configured to receive charge carriers from the first photodetection region;
a first readout region electrically coupled to the first charge storage region and configured to receive charge carriers from the first charge storage region; and
a first drain region electrically coupled to the first photodetection region and configured to receive charge carriers from the first photodetection region and transfer the received charge carriers to a direct current (DC) voltage for draining the charge carriers from the first photodetection region,
wherein the first photodetection region is configured to induce an intrinsic electric field in a first direction from the first photodetection region to the first drain region and from the first photodetection region to the first charge storage region; and

a second pixel comprising:
a second photodetection region;
a second charge storage region electrically coupled to the second photodetection region and configured to receive charge carriers from the second photodetection region;
a second readout region electrically coupled to the second charge storage region and configured to receive charge carriers from the second charge storage region; and
a second drain region electrically coupled to the second photodetection region and configured to receive charge carriers from the second photodetection region and transfer the received charge carriers to the DC voltage,
wherein:
the second photodetection region is configured to induce an intrinsic electric field in a second direction from the second photodetection region to the second drain region and from the second photodetection region to the second charge storage region;
the second direction is substantially opposite the first direction; and
the first and second pixels are positioned one after another in one of the first and second directions.