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. 18, 2023
Filed:
Jun. 17, 2021
Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;
Yen-Ting Chiang, Tainan, TW;
Ching-Chun Wang, Tainan, TW;
Dun-Nian Yaung, Taipei, TW;
Jen-Cheng Liu, Hsin-Chu, TW;
Jhy-Jyi Sze, Hsin-Chu, TW;
Shyh-Fann Ting, Tainan, TW;
Yimin Huang, Hsinchu, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Abstract
The problem of reducing noise in image sensing devices, especially NIR detectors, is solved by providing ground connections for the reflectors. The reflectors may be grounded through vias that couple the reflectors to grounded areas of the substrate. The grounded areas of the substrate may be P+ doped areas formed proximate the surface of the substrate. In particular, the P+ doped areas may be parts of photodiodes. Alternatively, the reflectors may be grounded through a metal interconnect structure formed over the front side of the substrate.