US 12,243,882 B2
Photoelectric conversion device
Daisuke Kobayashi, Saitama (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 10, 2023, as Appl. No. 18/506,857.
Application 18/506,857 is a division of application No. 17/588,002, filed on Jan. 28, 2022, granted, now 11,843,888.
Claims priority of application No. 2021-016618 (JP), filed on Feb. 4, 2021.
Prior Publication US 2024/0080586 A1, Mar. 7, 2024
Int. Cl. H01L 27/146 (2006.01); H04N 25/75 (2023.01); H04N 25/78 (2023.01)
CPC H01L 27/14603 (2013.01) [H04N 25/75 (2023.01); H04N 25/78 (2023.01)] 11 Claims
OG exemplary drawing
 
1. A photoelectric conversion device comprising:
a pixel array including a plurality of pixels arranged to form a plurality of columns; and
a column circuit arranged corresponding to each of the plurality of columns of the pixel array,
wherein the column circuit includes:
a first sample and hold unit including a first amplifier and a first source follower circuit that are cascade-connected and configured to hold a signal output from a pixel in a corresponding column;
an analog-to-digital conversion circuit configured to convert an analog signal based on the signal into a digital signal;
a first line configured to supply a driving potential to at least one of the first amplifier and the first source follower circuit; and
a third line configured to supply a driving potential to a part of the analog-to-digital conversion circuit, and
wherein the first line and the third line are separated from each other in the photoelectric conversion device.