US 12,328,521 B2
Photoelectric conversion device, and apparatus
Koichiro Iwata, Kanagawa (JP); and Yoshiaki Takada, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 24, 2023, as Appl. No. 18/174,365.
Claims priority of application No. 2022-029296 (JP), filed on Feb. 28, 2022.
Prior Publication US 2024/0031708 A1, Jan. 25, 2024
Int. Cl. H04N 25/78 (2023.01); H04N 23/667 (2023.01); H04N 25/65 (2023.01)
CPC H04N 25/78 (2023.01) [H04N 23/667 (2023.01); H04N 25/65 (2023.01)] 22 Claims
OG exemplary drawing
 
1. A photoelectric conversion device comprising:
a signal line;
a pixel including a photoelectric conversion portion configured to generate charges based on incident light, and an amplification transistor configured to output, the signal line, a signal according to an amount of the charges;
an input node electrically connected to the signal line, and configured to input the signal;
a holding circuit configured to hold the signal input to the input node;
an amplifier configured to input the signal held in the holding circuit;
an output node configured to output the signal from the amplifier;
an input switch connected in series between the input node and the holding circuit; and
an output switch connected in series between the amplifier and the output node,
wherein, in a first operation mode, the output switch is in an on state, and the input switch is turned on or off at a predetermined timing to hold the signal in the holding circuit, and
wherein, in a second operation mode, the input switch and the output switch are in an off state and the amplifier outputs a constant voltage.