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:
Dec. 15, 2020
Filed:
Apr. 26, 2019
Applicant:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Inventor:
Ming-Chyi Liu, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/00 (2006.01); H01L 27/146 (2006.01);
U.S. Cl.
CPC ...
H01L 27/14612 (2013.01); H01L 27/1463 (2013.01); H01L 27/14614 (2013.01); H01L 27/14643 (2013.01); H01L 27/14689 (2013.01);
Abstract
An image sensor and a method for forming an image sensor are provided. The image sensor includes a substrate, and the substrate includes a pixel region, a peripheral region and a boundary region, and the boundary region is formed between the pixel region and the peripheral region. The image sensor also includes a first gate stack structure formed in the pixel region and a second gate stack structure formed in the peripheral region. The second gate stack structure includes a high-k dielectric layer and a first metal layer.