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. 07, 2026
Filed:
Feb. 11, 2022
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Ming-Hsien Yang, Taichung, TW;
Chun-Hao Chou, Tainan, TW;
Kuo-Cheng Lee, Tainan, TW;
Chung-Liang Cheng, Changhua, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu, TW;
Abstract
Image sensing devices according to present disclosure include metal gate structures in a pixel device. Particularly, the metal gate structures include a ferroelectric layer and a conductive layer to form a negative capacitance device in the gate stack. As a result, the transistors in the pixel device have reduced threshold swing, improved gain and reduced threshold voltage shift. The pixel device according to the present disclosure includes a combination of metal gate and polycrystalline gate, which provides flexibility in pixel device design and improves performance.