US 11,670,664 B2
Light-receiving element and distance measurement module using indirect time of flight
Takuya Maruyama, Kanagawa (JP); Yuji Isogai, Kanagawa (JP); Tsutomu Imoto, Kanagawa (JP); Takuro Murase, Kanagawa (JP); and Ryota Watanabe, Kanagawa (JP)
Assigned to SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
Appl. No. 16/631,940
Filed by SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
PCT Filed Jul. 4, 2019, PCT No. PCT/JP2019/026574
§ 371(c)(1), (2) Date Jan. 17, 2020,
PCT Pub. No. WO2020/017339, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. JP2018-135351 (JP), filed on Jul. 18, 2018.
Prior Publication US 2021/0225907 A1, Jul. 22, 2021
Int. Cl. H01L 27/146 (2006.01)
CPC H01L 27/1464 (2013.01) [H01L 27/14623 (2013.01); H01L 27/14629 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A light-receiving element to measure distance, comprising:
a tap drive unit:
a first signal extraction unit including:
a first voltage application unit wherein the first voltage application unit comprises a first P-type semiconductor region; and
a first charge detection unit wherein the first charge detection unit comprises a first N+ semiconductor region, and wherein the first charge detection unit is disposed at a periphery of the first voltage application unit; and
a second signal extraction unit including:
a second voltage application unit, wherein the second voltage application unit comprises a second P-type semiconductor region; and
a second charge detection unit wherein the second charge detection unit comprises a second N+ semiconductor region, and wherein the second charge detection unit is disposed at a periphery of the second voltage application unit.