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:
Aug. 22, 1995
Filed:
Mar. 03, 1994
Norio Ohkubo, Machida, JP;
Makoto Suzuki, Niiza, JP;
Katsuro Sasaki, Burlingame, CA (US);
Yoshio Homma, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method of fabricating semiconductor integrated circuits with an improved yield rate is realized, which requires no special circuits for selecting normal circuit blocks. Removable temporary wires are connected to circuit blocks, which are thus tested. After removing the temporary wires, a plurality of normally-operating circuit blocks are interconnected by new main wires. The need of a special selecting circuit for replacing defective circuit blocks with normal circuit blocks is eliminated without increasing the delay time due to redundancy. The freedom of the main wiring formed after removal of the temporary wires is so high that the functional freedom of the system constructed is improved.