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:
Mar. 27, 2001
Filed:
Jun. 14, 1999
Boon-Khim Liew, Hsinchu, TW;
Jing-Meng Liu, Hsinchu, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Abstract
The present invention provides a method of placing and routing metal wires for integrated circuit. In the method, a grid pattern is constructed by a plurality of floors with metal wires The grid size is set to be equal to a metal pitch. However, each via placed in the grid pattern has to be constrained by a checkerboard-like pattern. The checkerboard-like pattern consists of potential via sites and forbidden sites, wherein the potential via sites and the forbidden sites are intervened each other so that each potential via site in a comer of the grid has forbidden sites at its nearest neighbor corners. Furthermore, the connection cells is constructed and placed in a defined via site for connecting the metal wires in individually floor.