Patent ID: 9035370
Filing Date: 2015-05-19
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate; a first conductivity type well and a second conductivity type well that are formed on an upper layer part of the semiconductor substrate and are alternately arranged along one direction; a first active area that is formed on an upper face of the semiconductor substrate, constitutes a part of the first conductivity type well, and has a longitudinal direction in the one direction; a second active area that is formed on the upper face of the semiconductor substrate, constitutes a part of the second conductivity type well, and has a longitudinal direction in the one direction; a first well contact layer that is formed in the first active area at one end part in the one direction, is a first conductivity type, and has an effective impurity concentration higher than an effective impurity concentration of the first conductivity type well; a plurality of first source/drain layers which are intermittently formed along the one direction at a part excluding the one end part in the first active area, and each of which is a second conductivity type, and has an effective impurity concentration higher than an effective impurity concentration of the second conductivity type well; a first gate insulating film that is provided on a part which is sandwiched between the first source/drain layers in the first active area; a first gate electrode provided on the first gate insulating film; a second well contact layer that is formed in the second active area at one end part in the one direction, is the second conductivity type, and has an effective impurity concentration higher than an effective impurity concentration of the second conductivity type well; a plurality of second source/drain layers which are intermittently formed along the one direction at a part excluding the one end part in the second active area, and each of which is the first conductivity type, and has an effective impurity concentration higher than an effective impurity concentration of the first conductivity type well; a second gate insulating film that is provided on a part sandwiched between the second source/drain layers in the second active area; and a second gate electrode provided on the second gate insulating film, the one end parts in each of the first active areas and in each of the second active areas formed on the same side.