Patent ID: 9035315
Filing Date: 2015-05-19
Classification: H01L

Abstract:
1. A semiconductor device that has a first thin film transistor of n-channel type and a second thin film transistor of p-channel type on a face of a single substrate, wherein the first thin film transistor comprises: a first semiconductor layer that has a first channel region, a first source region, and a first drain region; a first gate electrode disposed above the first channel region; and a gate insulating film disposed between the first semiconductor layer and the first gate electrode, wherein the second thin film transistor comprises: a second semiconductor layer that has a second channel region, a second source region, and a second drain region; a second gate electrode disposed above the second channel region; and a gate insulating film disposed between the second semiconductor layer and the second gate electrode, wherein the first semiconductor layer has a main portion that is sandwiched by a upper surface and a lower surface of the first semiconductor layer and a slanted portion that is sandwiched by a side face and the lower surface of the first semiconductor layer, wherein the second semiconductor layer has a main portion that is sandwiched by a upper surface and a lower surface of the second semiconductor layer and a slanted portion that is sandwiched by a side face and the lower surface of the second semiconductor layer, and wherein an inclination angle of the side face of the second semiconductor layer relative to a plane of the substrate is larger than an inclination angle of the side face of the first semiconductor layer.