US 11,927,478 B2
Light detection device
Hironori Sonobe, Hamamatsu (JP)
Assigned to HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
Appl. No. 17/311,763
Filed by HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
PCT Filed Nov. 29, 2019, PCT No. PCT/JP2019/046909
§ 371(c)(1), (2) Date Jun. 8, 2021,
PCT Pub. No. WO2020/121859, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 2018-232892 (JP), filed on Dec. 12, 2018; application No. 2018-232895 (JP), filed on Dec. 12, 2018; and application No. 2019-175948 (JP), filed on Sep. 26, 2019.
Prior Publication US 2022/0026269 A1, Jan. 27, 2022
Int. Cl. H01L 31/107 (2006.01); G01J 1/44 (2006.01); H01L 27/144 (2006.01); H01L 31/02 (2006.01)
CPC G01J 1/44 (2013.01) [H01L 27/1446 (2013.01); H01L 31/02027 (2013.01); H01L 31/107 (2013.01); G01J 2001/444 (2013.01); G01J 2001/4466 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A light detection device, comprising:
a light detection unit including at least one avalanche photodiode, a plurality of temperature compensation diodes configured to provide temperature compensation for a gain of the at least one avalanche photodiode, and a terminal electrically connecting the at least one avalanche photodiode and the plurality of temperature compensation diodes in parallel with each other,
wherein the light detection unit has a light detection region in which the at least one avalanche photodiode is provided, a first temperature detection region which is located around the light detection region and in which at least one of the plurality of temperature compensation diodes is provided, and a second temperature detection region which is located around the light detection region and in which the rest of the plurality of temperature compensation diodes excluding the at least one temperature compensation diode is provided, and
the light detection region is interposed between the first temperature detection region and the second temperature detection region.