US 12,395,761 B2
Pixel array accumulating photocharges in each unit frame, and image sensor including the pixel array
Minwoong Seo, Hwaseong-si (KR); Hyunyong Jung, Seoul (KR); Daehee Bae, Hwaseong-si (KR); and Myunglae Chu, Hwaseong-si (KR)
Assigned to Samsung Electronics Co., Ltd, Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Aug. 2, 2022, as Appl. No. 17/879,497.
Claims priority of application No. 10-2021-0102664 (KR), filed on Aug. 4, 2021; and application No. 10-2022-0090608 (KR), filed on Jul. 21, 2022.
Prior Publication US 2023/0039542 A1, Feb. 9, 2023
Int. Cl. H04N 25/771 (2023.01); H04N 25/533 (2023.01); H04N 25/58 (2023.01); H04N 25/75 (2023.01); H04N 25/772 (2023.01); H04N 25/79 (2023.01)
CPC H04N 25/771 (2023.01) [H04N 25/533 (2023.01); H04N 25/58 (2023.01); H04N 25/75 (2023.01); H04N 25/772 (2023.01); H04N 25/79 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A pixel array comprising a plurality of pixels,
wherein each of the plurality of pixels comprises:
a photodiode configured to generate a photocharge in a frame including a plurality of unit frames;
a floating diffusion node configured to receive the photocharge;
a first storage capacitor configured to store a first photocharge received from the floating diffusion node based on a first charge sharing signal, wherein the first photocharge generated by the photodiode during a first unit accumulation time period in each of the plurality of unit frames; and
a second storage capacitor configured to store a second photocharge received from the floating diffusion node based on a second charge sharing signal, wherein the second photocharge generated by the photodiode during a second unit accumulation time period in each of the plurality of unit frames,
wherein a start of the second unit accumulation time period is after the first unit accumulation time period ends and the floating diffusion node is reset.