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:
Sep. 20, 2016
Filed:
Aug. 20, 2014
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Wan-Yen Lin, Kaohsiung, TW;
Wun-Jie Lin, Hsinchu, TW;
Yu-Ti Su, Tainan, TW;
Bo-Ting Chen, Fengyuan, TW;
Jen-Chou Tseng, Jhudong Township, TW;
Kuo-Ji Chen, Taipei County, TW;
Sun-Jay Chang, Hsinchu, TW;
Min-Chang Liang, Zhu-Dong Town, TW;
Abstract
A circuit device includes core circuitry. The circuit device further includes a first set of guard rings having a first dopant type, the first set of guard rings being around a periphery of the core circuitry, the first set of guard rings comprising a first guard ring and a second guard ring. The circuit device further includes a second set of guard rings having a second dopant type, the second dopant type being opposite to the first dopant type, wherein at least one guard ring of the second set of guard rings is around a periphery of at least one guard ring of the first set of guard rings, and the second set of guard rings comprises a third guard ring and a fourth guard ring.