US 12,230,654 B2
Imaging device and electronic apparatus
Takashi Machida, Tokyo (JP)
Assigned to Sony Semiconductor Solutions Corporation, Kanagawa (JP)
Filed by SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
Filed on Sep. 25, 2023, as Appl. No. 18/372,431.
Application 18/372,431 is a continuation of application No. 17/882,307, filed on Aug. 5, 2022, granted, now 11,923,387.
Application 17/882,307 is a continuation of application No. 17/261,059, granted, now 11,482,550, issued on Oct. 25, 2022, previously published as PCT/JP2019/028494, filed on Jul. 19, 2019.
Claims priority of application No. 2018-143491 (JP), filed on Jul. 31, 2018.
Prior Publication US 2024/0021633 A1, Jan. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01L 27/146 (2006.01); H04N 25/50 (2023.01); H04N 25/76 (2023.01)
CPC H01L 27/14614 (2013.01) [H01L 27/1464 (2013.01); H04N 25/50 (2023.01); H04N 25/76 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A light detecting device, comprising:
a semiconductor layer having a front surface and a back surface, the back surface being on an opposite side of the front surface;
a photoelectric converter that is embedded in the semiconductor layer and generates electric charges corresponding to a received light amount; and
a transfer section that includes a first portion and a second portion and transfers the electric charges from the photoelectric converter to a single transfer destination, the first portion and the second portion each extending from the front surface to the back surface of the semiconductor layer, wherein
the first portion has a first length from the front surface to a bottom portion of the first portion which is disposed between the front surface of the semiconductor layer and the back surface of the semiconductor layer,
the second portion has a second length from the front surface to a bottom portion of the second portion which is disposed between the front surface of the semiconductor layer and the back surface of the semiconductor layer, the second length being shorter than the first length, and
in a plane parallel to the front surface, a distance between the second portion and the transfer destination is shorter than a distance between the first portion and the transfer destination.