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. 04, 2007
Filed:
Apr. 04, 2005
Wai Ling Chung-maloney, Waterbury Center, VT (US);
Haruo Ito, Shiga, JP;
Douglas W. Stout, Milton, VT (US);
Wai Ling Chung-Maloney, Waterbury Center, VT (US);
Haruo Ito, Shiga, JP;
Douglas W. Stout, Milton, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus and method for optimizing the size of an IO collar and reducing the die size of an IC chip is provided. The method and apparatus includes arranging rotated IO cells around the edges of the IC chip to reduce the number of unused IO cells in the IO collar. All the IO cells may be rotated, or a combination of rotated and non-rotated IO cells may form the IO collar. For each edge of the IC chip having rotated IO cells, each edge may have the same number of stacks of IO cells or a different number of stacks of IO cells.