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. 08, 2014
Filed:
Apr. 02, 2012
Ching-hung Fu, Hsin-Chu, TW;
Chun-yao Ko, Hsin-Chu, TW;
Tuo-hsin Chien, Zhubei, TW;
Ting-chen Hsu, Taichung, TW;
Ching-Hung Fu, Hsin-Chu, TW;
Chun-Yao Ko, Hsin-Chu, TW;
Tuo-Hsin Chien, Zhubei, TW;
Ting-Chen Hsu, Taichung, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;
Abstract
A device includes an active region and a coupling capacitor. The capacitor includes a first floating gate as an upper capacitor plate of the coupling capacitor, and a doped semiconductor region as a lower capacitor plate of the coupling capacitor. The doped semiconductor region includes a surface portion at a surface of the active region, and a sidewall portion lower than a bottom surface of the surface portion. The sidewall portion is on a sidewall of the active region. A capacitor insulator is disposed between the upper capacitor plate and the lower capacitor plate. The capacitor insulator includes an upper portion, and a sidewall portion lower than a bottom surface of the upper portion.