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:
Dec. 31, 2002
Filed:
Mar. 26, 2001
Kuo-Chun Lee, Fremont, CA (US);
Xin Chang, Santa Clara, CA (US);
Oridus, Inc., Fremont, CA (US);
Abstract
A method and apparatus for inserting antenna diodes into an integrated circuit design is described. During the design process, diode cells are placed in filler cells of the integrated circuit design, but left unconnected. Subsequently, when an ECO is received requiring antenna diodes to be inserted in the integrated circuit design, only metal mask changes are required to connect the diode cells to gate electrodes of specified transistors or cells. Since the diode cells are already part of the original integrated circuit design layout, it is not necessary to perform a re-layout of the design cells with the diode cells performing antenna diode functions, thereby speeding up the EDA redesign process as well.