US 11,792,545 B2
Electronic circuit for compensating a voltage level against a variation of temperature, and an image sensor including the same
Jaehoon Jun, Suwon-si (KR); and Han Yang, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Feb. 23, 2022, as Appl. No. 17/678,268.
Claims priority of application No. 10-2021-0088933 (KR), filed on Jul. 7, 2021.
Prior Publication US 2023/0020850 A1, Jan. 19, 2023
Int. Cl. H04N 25/709 (2023.01); H04N 25/75 (2023.01)
CPC H04N 25/709 (2023.01) [H04N 25/75 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An image sensor, comprising:
a pixel array including a first pixel and a second pixel, wherein the first pixel and the second pixel are connected to a column line;
a row driver configured to provide the first pixel with a first selection signal based on a clamp voltage, and to provide the second pixel with a second selection signal based on a selection voltage,
wherein the first pixel outputs a first output voltage in response to the first selection signal, and the second pixel outputs a second output voltage in response to the second selection signal,
wherein the first output voltage and the second output voltage are output as a pixel signal through the column line,
wherein a voltage of the pixel signal corresponds to a voltage obtained by clamping the second output voltage with the first output voltage, and
wherein a change in a voltage level of the first output voltage due to a temperature is compensated for by the clamp voltage.