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. 07, 2002
Filed:
Oct. 01, 1999
Duane G. Breid, Lakeville, MN (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
The semiconductor cell library of the present invention includes a plurality of semiconductor cell definitions. At least one of the semiconductor cell definitions includes a base cell and at least one derivative cell. The base cell has a logical function and includes a base cell layout pattern of transistors with at least one diffusion. The derivative cell has the same logical function as the base cell and includes a derivative cell layout pattern of transistors with at least on a diffusion region. The diffusion region of the derivative cell layout pattern is expanded in one dimension outwardly from a geometric center of the layout pattern relative to the diffusion region of the base cell layout pattern.