Patent ID: 7034335
Filing Date: 2006-04-25
Classification: H01L

Abstract:
1. A TFT substrate comprising: an underlying substrate having an insulating surface; a gate electrode disposed on the insulating surface of said underlying substrate; a first insulating film covering the insulating surface of said underlying substrate and said gate electrode; a channel layer made of semiconductor and disposed on said first insulating film, the channel layer overriding said gate electrode; first and second conductive films made of Al or Al alloy and disposed on an upper surface of said channel layer on both sides of said gate electrode; a first upper conductive film disposed on said first conductive film and formed with a first opening; a second upper conductive film disposed on said second conductive film; and a second insulating film covering said first and second upper conductive films and said channel layer and formed with a second opening, an inner wall of the second opening being retreated from an inner wall of the first opening.