Patent ID: 8310302
Filing Date: 2012-11-13
Classification: H01L

Abstract:
1. An abutment structure, comprising: a power rail; a ground rail, disposed parallel to said power rail, wherein an area defined between said power rail and said ground rail; a plurality of first cells, a portion of each of said first cells overlapping said power rail and said ground rail, and another portion of each of said first cells being located within said area, wherein each of said first cells having an original pattern; and a plurality of second cells, a portion of each of said second cells overlapping said power rail and said ground rail, and another portion of each of said second cells being located within said area, wherein each of said second cells having an original pattern and a base pattern, and said base pattern being a flip pattern of said original pattern, wherein said first cells and said second cells being disposed within said area alternately without overlapping, said first cells being disposed within said area with said original patterns of said first cells, and said second cells being disposed within said area with alternate of said original and said base patterns of said second cells.