Patent ID: 8013338
Filing Date: 2011-09-06
Classification: H01L

Abstract:
1. A display device including a thin film transistor, comprising: a gate electrode provided over a substrate; a gate insulating film provided over the gate electrode; a microcrystalline semiconductor film provided over the gate electrode with the gate insulating film interposed therebetween; a channel protection layer provided over the microcrystalline semiconductor film and in contact with the microcrystalline semiconductor film; an amorphous semiconductor film provided over the gate insulating film and on a side surface of the microcrystalline semiconductor film and the channel protection layer; an impurity semiconductor layer provided over the amorphous semiconductor film; and a source electrode and a drain electrode provided over and in contact with the impurity semiconductor layer, wherein a thickness of the amorphous semiconductor film is larger than a thickness of the microcrystalline semiconductor film.