Patent ID: 11950011
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An image sensor including a pixel array having a plurality of pixels, wherein each of the plurality of pixels comprises:
a first photodiode;
a second photodiode having a larger light-receiving area than the first photodiode;
a first floating diffusion node where charge generated in the first photodiode is accumulated;
a second floating diffusion node where charge generated in the second photodiode is accumulated;
a third floating diffusion node where charge transferred from the first floating diffusion node is accumulated;
a conversion gain transistor having a first end connected to the third floating diffusion node and a second other end connected to the second floating diffusion node;
a first capacitor accumulating charge overflowing from the first photodiode;
a first driving transistor configured to generate an output signal corresponding to a voltage of the second floating diffusion node; and
a second capacitor storing an amount of overflow charges according to an overflow operation for accumulating the overflowing charge and storing an amount of reset charges according to a reset operation for resetting the first floating diffusion node.