Patent ID: 8242553
Filing Date: 2012-08-14
Classification: H01L

Abstract:
1. A thin film transistor comprising: a first insulating layer formed or an insulating substrate; a first semiconductor layer formed on said first insulating layer; a second insulating layer formed on said first semiconductor layer, a first conductive layer disposed between said insulating substrate and said first insulating layer; and a second conductive layer with a floating state formed on said second insulating layer, said second conductive layer including a first area and a second area such that said first area is a top gate electrode area overlapped with said first semiconductor layer while said second area is a capacity coupling area overlapped with said first conductive layer in the area which is not overlapped with said first semiconductor layer, and a size of said second area is made larger than that of said first area so that an electric potential at said second conductive layer is in a vicinity of an electric potential at said first conductive layer.