US 12,107,174 B2
Light detecting device and system
Dan Luo, Kanagawa (JP); and Tatsuki Nishino, Kanagawa (JP)
Assigned to SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
Appl. No. 17/760,875
Filed by SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
PCT Filed Jun. 16, 2020, PCT No. PCT/JP2020/023498
§ 371(c)(1), (2) Date Mar. 16, 2022,
PCT Pub. No. WO2021/059619, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-176633 (JP), filed on Sep. 27, 2019.
Prior Publication US 2022/0344521 A1, Oct. 27, 2022
Int. Cl. H01L 31/02 (2006.01); G01J 1/44 (2006.01); G01S 7/4865 (2020.01); H01L 31/107 (2006.01)
CPC H01L 31/02027 (2013.01) [G01J 1/44 (2013.01); G01S 7/4865 (2013.01); H01L 31/107 (2013.01); G01J 2001/4466 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light detecting device, comprising:
first pixel circuitry including a first avalanche photodiode;
second pixel circuitry including:
a second avalanche photodiode;
a first delay circuit including an input coupled to a cathode of the second avalanche photodiode;
a first circuit including a first input coupled to the cathode of the second avalanche photodiode, and a second input coupled to an output of the first delay circuit; and
a control circuit coupled to an output of the first circuit and configured to control a potential of an anode of the first avalanche photodiode based on the output of the first circuit.