Patent ID: 9679912
Date: 2017-06-13
CPC Classifications: H01L

Claim:
1. A semiconductor device, comprising: a substrate having a major surface; a stacked body provided on the major surface of the substrate, the stacked body including a plurality of electrode layers stacked with an insulator interposed; a columnar portion provided in the stacked body, the columnar portion extending along a stacking direction of the stacked body, the columnar portion including a semiconductor body and a memory film, the memory film provided between the semiconductor body and the electrode layers, the memory film including a charge storage portion; and a plate portion provided in the stacked body, the plate portion extending along the stacking direction of the stacked body and a major surface direction of the substrate, the plate portion including a plate conductor and a sidewall insulating film, the sidewall insulating film provided between the plate conductor and the stacked body, the stacked body including an air gap, the air gap provided between the sidewall insulating film and the electrode layers.