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:
Nov. 12, 2002
Filed:
Dec. 19, 2000
Hua Zheng, Fremont, CA (US);
Jae-Hyeong Kim, San Jose, CA (US);
Winbond Electronics Corporation, Hsin Chu, TW;
Abstract
A redundant circuit that includes a combination of fuses and anti-fuses, and which may be used during various phases of the manufacturing process (e.g., during wafer test or final test) to replace a defective circuit. The redundant circuit includes (1) a replacement circuit (e.g., a redundant memory cell) that is configurable to replace a defective circuit, and (2) supporting circuitry for the replacement circuit. The support circuit is configurable to provide a control signal (e.g., to activate a word line) for the replacement circuit and further includes at least one fuse and at least one anti-fuse. The fuses or anti-fuses may be programmed to provide a programmed value (e.g., a programmed address) for the replacement circuit. The redundant circuit can be efficiently fabricated within a memory device, and may also be used for other circuits and applications.