Patent ID: 9000441
Filing Date: 2015-04-07
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first gate electrode layer over a substrate; a first gate insulating layer over the first gate electrode layer; a conductive layer over and in contact with the first gate insulating layer, the conductive layer overlapping the first gate electrode layer; a semiconductor layer over the conductive layer and the first gate insulating layer; a source electrode layer over the semiconductor layer, the source electrode layer overlapping a first portion of the first gate electrode layer; a drain electrode layer over the semiconductor layer, the drain electrode layer overlapping a second portion of the first gate electrode layer; a second gate insulating layer over the semiconductor layer; and a second gate electrode layer over the second gate insulating layer, the second gate electrode layer overlapping a third portion of the first gate electrode layer between the first portion and the second portion, wherein the semiconductor layer is in contact with the first gate insulating layer over the third portion of the first gate electrode layer.