US 12,149,856 B2
Photoelectric conversion device and method of driving photoelectric conversion device
Hideo Kobayashi, Tokyo (JP); and So Hasegawa, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 24, 2023, as Appl. No. 18/158,554.
Claims priority of application No. 2022-012748 (JP), filed on Jan. 31, 2022.
Prior Publication US 2023/0247332 A1, Aug. 3, 2023
Int. Cl. H04N 25/78 (2023.01); H01L 27/146 (2006.01); H04N 25/618 (2023.01); H04N 25/709 (2023.01); H04N 25/766 (2023.01)
CPC H04N 25/78 (2023.01) [H04N 25/709 (2023.01); H04N 25/766 (2023.01); H01L 27/14634 (2013.01); H04N 25/618 (2023.01)] 22 Claims
OG exemplary drawing
 
1. A photoelectric conversion device comprising:
a plurality of pixels arranged to form a plurality of columns;
a plurality of comparison circuits provided corresponding to the plurality of columns, each of the plurality of comparison circuits including a first input node to which a pixel signal output from a pixel of a corresponding column is input and a second input node to which a reference signal is input;
a plurality of buffer circuits provided between a reference signal line to which the reference signal is supplied and each of the second input nodes of the plurality of comparison circuits; and
a first switch circuit configured to set a connection state between output nodes of the plurality of buffer circuits.