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:
May. 24, 2011
Filed:
Apr. 01, 2008
Tung-kai Tsai, Changhua County, TW;
Chih-ching Lin, Hualien County, TW;
Tung-Kai Tsai, Changhua County, TW;
Chih-Ching Lin, Hualien County, TW;
Mediatek Inc., Hsin-Chu, TW;
Abstract
A layout circuit is provided, comprising standard cells, a spare cell, combined tie cells and normal filler cells. The standard cells are disposed and routed on a layout area. The spare cell is added on the layout area and provided for replacing one of the standard cells while adding or changing functions later. The combined tie cells are added on the layout area. The normal filler cells are added on the rest of the layout area. The combined tie cell comprises a tie-high circuit, a tie-low circuit and a capacitance circuit. Some standard cells are disposed near at least one combined tie cell for avoiding routing congestion between the combined tie cells and the replaced standard cell. A circuit layout method is also provided.