Patent ID: 7977748

Claim:
A semiconductor device comprising: a plurality of transistors, said plurality of transistors being stacked, each of said plurality of transistors comprising: a first semiconductor region and a second semiconductor region including impurities formed on an insulating layer formed on a semiconductor substrate; an insulator formed between said first semiconductor region and said second semiconductor region; a channel layer formed on said first semiconductor region and said second semiconductor region, said channel layer being perpendicular to a direction in which said first semiconductor region and said second semiconductor region are extended; a first impurity diffusion control film formed between said first semiconductor region and said channel layer, and a second impurity diffusion control film formed between said second semiconductor region and said channel layer, a gate insulating film formed on said channel layer; and a gate electrode formed on said gate insulating film, wherein said first impurity diffusion control film and said second impurity diffusion control film are punctured, and said first semiconductor region and said channel layer and said second semiconductor region and said channel layer are electrically connected.