US 12,034,091 B2
Light detector, light detection system, LIDAR device, and moving body
Honam Kwon, Kawasaki Kanagawa (JP); Kazuhiro Suzuki, Tokyo (JP); Keita Sasaki, Yokohama Kanagawa (JP); and Mariko Shimizu, Tokyo (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Feb. 24, 2021, as Appl. No. 17/184,297.
Claims priority of application No. 2020-139457 (JP), filed on Aug. 20, 2020.
Prior Publication US 2022/0059710 A1, Feb. 24, 2022
Int. Cl. H01L 31/0232 (2014.01); G01S 17/08 (2006.01); G01S 17/89 (2020.01); H01L 27/144 (2006.01); H01L 31/107 (2006.01)
CPC H01L 31/02327 (2013.01) [G01S 17/08 (2013.01); G01S 17/89 (2013.01); H01L 27/1446 (2013.01); H01L 31/107 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A light detector, comprising:
a first semiconductor layer of a first conductivity type;
a first region provided on a portion of the first semiconductor layer, the first region including
a first semiconductor region of the first conductivity type having a higher first-conductivity-type impurity concentration than the first semiconductor layer, and
a second semiconductor region provided on the first semiconductor region, the second semiconductor region being of a second conductivity type;
a quenching part electrically connected to the second semiconductor region;
a second region provided on another portion of the first semiconductor layer, the second region including
a third semiconductor region of the second conductivity type, and
a fourth semiconductor region provided on a portion of the third semiconductor region, the fourth semiconductor region being of the first conductivity type; and
a first layer provided on the second region, the first layer including a resin that absorbs or reflects light.