公开(公告)号：US20230319431A1

公开(公告)日：2023-10-05

申请号：US18329169

申请日：2023-06-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yunhwan JUNG ,  Hyeokjong LEE ,  Sunyool Kang ,  Kyungmin Kim ,  Yunhong KIM ,  Ingyeong SHIN

IPC: H04N25/585 ,  H04N25/75 ,  H04N25/77 ,  H04N25/616 ,  H04N25/709 ,  H04N25/78

CPC classification number: H04N25/585 ,  H04N25/75 ,  H04N25/77 ,  H04N25/616 ,  H04N25/709 ,  H04N25/78

Abstract: An image sensor includes a pixel configured to operate in a high conversion gain (HCG) mode and a low conversion gain (LCG) mode during a readout period, and a correlated double sampling (CDS) circuit configured to generate a comparison signal based on a ramp signal and a pixel voltage received from the pixel, wherein the CDS circuit includes a comparator configured to: receive the pixel voltage through a first input node, receive the ramp signal through a second input node based on an LCG reset signal or an LCG image signal being received as the pixel voltage, and receive the ramp signal through a third input node based on an HCG reset signal or an HCG image signal being received as the pixel voltage; and compare the ramp signal to the pixel voltage, and output the comparison signal corresponding to a comparison result.