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:
Nov. 22, 2011
Filed:
May. 03, 2010
Keiichi Kusumoto, Hyogo, JP;
Keiichi Kusumoto, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In an integrated circuit device, element power supply lines connected to a circuit containing a plurality of cells, element ground lines connected thereto, a trunk power supply line connected to each of the element power supply lines, and a trunk ground line connected to each of the element ground lines are provided in a first wiring layer. A branch power supply line connected to the trunk power supply line and a branch ground line connected to the trunk ground line are provided in an upper wiring layer located above the first wiring layer. A wiring structure is determined based on a wiring structure equation expressing the relations among a voltage drop in the lines, the area occupied thereby, and a current consumed thereby and on a circuit characteristic equation expressing, when the circuit is subdivided while the ratio between the area of the circuit and a current consumed thereby is held constant, the relation between an area occupied by a circuit resulting from subdivision and a current consumed thereby.