US 12,328,961 B2
Image sensor including shared pixels
Eunsub Shim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 7, 2022, as Appl. No. 17/687,805.
Application 17/687,805 is a continuation of application No. 16/804,674, filed on Feb. 28, 2020, granted, now 11,282,875.
Claims priority of application No. 10-2019-0042184 (KR), filed on Apr. 10, 2019.
Prior Publication US 2022/0190005 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01L 27/146 (2006.01); H10F 39/00 (2025.01)
CPC H10F 39/8033 (2025.01) [H10F 39/8053 (2025.01); H10F 39/8063 (2025.01); H10F 39/807 (2025.01)] 11 Claims
OG exemplary drawing
 
1. An image sensor comprising:
a substrate having a first surface and a second surface; and
a plurality of shared pixel regions formed in the substrate, the plurality of shared pixel regions arranged in a first direction and a second direction perpendicular to the first direction;
wherein each of the plurality of shared pixel regions includes a first pixel group region and a second pixel group region arranged in the second direction,
wherein each of the first pixel group region and the second pixel group region includes a first sub-pixel region and a second sub-pixel region arranged in the first direction,
wherein each of the first sub-pixel region and the second sub-pixel region includes a photo sensing region on the first surface of the substrate,
wherein each of the first pixel group region and the second pixel group region includes a first well region doped with first conductivity type impurities and formed on the photo sensing region in a third direction perpendicular to the first direction and the second direction, and
wherein different first well regions in each of the plurality of shared pixel regions are separated from each other.