公开(公告)号：US20220093657A1

公开(公告)日：2022-03-24

申请号：US17343062

申请日：2021-06-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eunyoung JO ,  Minho JANG ,  Insung JOE ,  Minsung HEO ,  Jaesung HUR

IPC: H01L27/146

Abstract: An image sensor including a first pixel, a second pixel, a pixel isolation structure between the first pixel and the second pixel, a first rear anti-reflecting layer disposed on the first pixel, the second pixel, and the pixel isolation structure; a fence disposed on the first rear anti-reflecting layer, the fence being aligned with the pixel isolation structure; and a second rear anti-reflecting layer disposed on the first rear anti-reflecting layer and the fence, wherein an air gap is present between the first rear anti-reflecting layer and the fence, and wherein the air gap is surrounded by the second rear anti-reflecting layer.