Patent ID: 7719078
Filing Date: 2010-05-18
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; an active device region formed on a principal surface of the semiconductor substrate; an isolating region surrounding the active device region; a plurality of first active dummy patterns having the same plane shape and arranged at a first pitch in a first direction and a second direction different from the first direction in a region of the isolating region adjacent to the active device region; and a plurality of second active dummy patterns having the same plane shape and arranged at a second pitch in a third direction and a fourth direction different from the third direction in a region of the isolating region more distant than the first active dummy patterns from the active device region; wherein the first pitch is smaller than the second pitch, any one of plane areas of the first active dummy patterns is smaller than any one of plane areas of the second active dummy patterns, and any two of plane areas of the second active dummy patterns adjacent to the first active dummy patterns are equal with each other.