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:
May. 30, 2006
Filed:
Mar. 07, 2003
Applicants:
Chung-hui Chen, Tainan, TW;
Hun-hsien Chang, Taipei Hsien, TW;
Inventors:
Chung-Hui Chen, Tainan, TW;
Hun-Hsien Chang, Taipei Hsien, TW;
Assignee:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention comprises an ESD clamp circuit used in an integrated circuit with plural power supply. The ESD clamp circuit, connected between core voltage source and low voltage source, is fabricated by a process which fabricates core circuit. The ESD clamp circuit has a low trigger voltage, so it can conduct large current to protect the core circuit before the core circuit is damaged.