公开(公告)号：US20210020678A1

公开(公告)日：2021-01-21

申请号：US17042509

申请日：2019-04-09

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Ryo SUGIMORI ,  Yuma TANAKA

IPC: H01L27/146

Abstract: A light reception element includes a semiconductor portion having a first surface including a light receiving portion and a light shielding portion, and a light shielding metal film provided on the light shielding portion. The metal film has a second surface facing a side opposite to the first surface and receiving incident light. A plurality of recess portions are formed on the second surface. An inner surface of the recess portion includes a curved portion curved such that the recess portion reduces in size in a direction along the second surface from the second surface toward a bottom part of the recess portion.