The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2025
Filed:
May. 20, 2022
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Chun-Tsung Kuo, Tainan, TW;
Jiech-Fun Lu, Madou Township, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Abstract
Various embodiments of the present disclosure are directed towards an image sensor. The image sensor includes a plurality of photodetectors disposed within a substrate, and the plurality of photodetectors includes a first active photodetector and a black level correction (BLC) photodetector. A metal grid structure surrounds the first active photodetector along a periphery of the first active photodetector on a first side of the substrate. A recessed blocking structure covers the BLC photodetector on the first side of the substrate. The recessed blocking structure includes both a first blocking layer inset into the first side of the substrate and a second blocking layer directly over the first blocking layer.