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:
Feb. 07, 1995
Filed:
Nov. 15, 1991
Takeji Tokumaru, Kitagami, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A semiconductor integrated circuit fabrication method for designing and fabricating semiconductor circuit elements on a semiconductor substrate for an LSI comprises the steps of: replacing standard cells with symbolic cells with an one-to-one correspondence; registering the symbolic cells in a library; drawing a circuit diagram for a semiconductor integrated circuit; describing circuit description net statements for the semiconductor integrated circuit; arranging symbolic cells and wiring among the symbolic cells to obtain a symbolic layout based on the circuit diagram and the circuit description net statements; describing a stick diagram by using the symbolic layout; forming a mask pattern by using the stick diagrams; and forming the semiconductor circuit elements and wiring among the semiconductor circuit elements on the semiconductor substrate by using the mask pattern.