US 12,283,639 B2
Single-photon detection pixel and single-photon detection pixel array including the same
Myung-Jae Lee, Seoul (KR)
Assigned to TRUPIXEL INC., Daejeon (KR)
Filed by TRUPIXEL INC., Daejeon (KR)
Filed on Aug. 1, 2022, as Appl. No. 17/878,405.
Claims priority of application No. 10-2021-0194465 (KR), filed on Dec. 31, 2021.
Prior Publication US 2023/0215964 A1, Jul. 6, 2023
Int. Cl. H01L 31/0352 (2006.01); H01L 27/144 (2006.01); H01L 31/107 (2006.01)
CPC H01L 31/03529 (2013.01) [H01L 27/1443 (2013.01); H01L 27/1446 (2013.01); H01L 31/107 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A single-photon detection pixel comprising:
a substrate;
a first well provided in the substrate and having a first conductivity type;
a plurality of heavily doped regions provided in an upper portion of the first well, having a second conductivity type different from the first conductivity type, and located separately;
a plurality of contacts having the first conductivity type, surrounding the plurality of heavily doped regions, respectively, and interconnected with each other; and,
an isolation region including an insulating material, extending along an edge of the first well to form a pixel area therein, and surrounding the plurality of heavily doped regions and the plurality of contacts, the isolation region being located only along the boundary of the pixel area.