Patent ID: 8629445
Filing Date: 2014-01-14
Classification: H01L

Abstract:
1. A semiconductor device comprising: a gate electrode layer and a first semiconductor layer over an insulating surface; a second semiconductor layer provided on and in contact with the first semiconductor layer; a gate insulating layer provided between the gate electrode layer and the first semiconductor layer; a first impurity semiconductor layer and a second impurity semiconductor layer, the first impurity semiconductor layer and the second impurity semiconductor layer being provided in contact with the second semiconductor layer and separated from each other; a first conductive layer electrically connected to the first impurity semiconductor layer; and a second conductive layer electrically connected to the second impurity semiconductor layer, wherein an end portion of the first semiconductor layer is positioned inside the second semiconductor layer so that the first semiconductor layer is not in contact with any of the first conductive layer and the second conductive layer, wherein a space section is defined by an opening formed by the end portion of the first semiconductor layer, the second semiconductor layer, the first conductive layer, and the gate insulating layer.