US 11,982,769 B2
Distance sensor and distance measurement device
Yusuke Moriyama, Kanagawa (JP)
Assigned to Sony Semiconductor Solutions Corporation, Kanagawa (JP)
Appl. No. 16/980,371
Filed by Sony Semiconductor Solutions Corporation, Kanagawa (JP)
PCT Filed Feb. 26, 2019, PCT No. PCT/JP2019/007282
§ 371(c)(1), (2) Date Sep. 11, 2020,
PCT Pub. No. WO2019/181384, PCT Pub. Date Sep. 26, 2019.
Claims priority of application No. 2018-052257 (JP), filed on Mar. 20, 2018.
Prior Publication US 2021/0048513 A1, Feb. 18, 2021
Int. Cl. G01S 7/48 (2006.01); G01S 7/4863 (2020.01); G01S 7/4865 (2020.01); G01S 17/10 (2020.01); G01S 17/89 (2020.01)
CPC G01S 7/4863 (2013.01) [G01S 7/4865 (2013.01); G01S 17/10 (2013.01); G01S 17/89 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A time of flight sensor, comprising:
a light receiving element;
a first signal line and a second signal line;
a first transistor in electrical communication with the light receiving element, the first transistor comprising a first gate in electrical communication with the first signal line;
a second transistor in electrical communication with the light receiving element, the second transistor comprising a second gate in electrical communication with the second signal line; and
a control circuit comprising at least one comparator, wherein the control circuit is in electrical communication with the first and second signal line;
a first floating diffusion having an amount of charge relating to an amount of light received by the light receiving element;
a third transistor electrically coupled with the first floating diffusion and the control circuit;
a second floating diffusion having an amount of charge relating to the amount of light received by the light receiving element; and
a fourth transistor electrically coupled with the second floating diffusion and the control circuit.