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:
Aug. 05, 2008
Filed:
Dec. 14, 2005
Sou Hoshi, Kamakura, JP;
Sou Hoshi, Kamakura, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Radiation noise is reduced, and any operation error is prevented by suppressing noise propagation between an input/output circuit and an internal circuit while preventing or minimizing an increase in the number of steps of semiconductor element design. A semiconductor device having an input/output circuit region and an internal circuit region includes an internal circuit power supply cell which is arranged in the input/output circuit region and supplies a power to the internal circuit region, an internal circuit ground cell which is arranged in the input/output circuit region and supplies ground to the internal circuit region, and noise control cells which are arranged to sandwich the internal circuit power supply cell and the internal circuit ground cell in the input/output circuit region and formed by electrically connecting a p-type semiconductor substrate to ground independently of the input/output circuit region and the internal circuit region.