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:
Sep. 26, 2006
Filed:
Jun. 20, 2003
Satoshi Ishikura, Osaka, JP;
Satoshi Ishikura, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Repeater cells each comprising a buffer or an inverter and an n+ diffusion layer-P well type protection diode or a p+ diffusion layer-N well type antenna protection diode connected to an input pin of the buffer or the inverter for preventing antenna damage or an antenna rule error from occurring are previously registered by registration meansas the cells to be registered in a cell library. Whether or not a wiring conductor conducting to a gate electrode becomes an antenna ratio exceeding an allowed antenna ratio in the semiconductor device is determined by determination meansand if the wiring conductor exceeds the allowable antenna ratio, one or more repeater cells are inserted into any point of the wiring conductor by selection means