Patent ID: 7786485
Filing Date: 2010-08-31
Classification: H01L

Abstract:
1. A thin-film transistor comprising: a gate electrode; a gate insulating layer over the gate electrode; a pair of conductive layers over the gate insulating layer, wherein the pair of conductive layers overlaps the gate electrode at least partly and is disposed with a space therebetween in a channel length direction; a pair of impurity semiconductor layers over the pair of conductive layers and the gate electrode, wherein an impurity element imparting one conductivity type is added to the pair of impurity semiconductor layers to form a source region and a drain region; and an amorphous semiconductor layer over the pair of conductive layers, wherein the amorphous semiconductor layer is in contact with at least a part of the gate insulating layer, which is between the pair of conductive layers, and disposed between the pair of impurity semiconductor layers and the pair of conductive layers.