Patent ID: 6303946
Filing Date: 2001-10-16
Classification: H01L

Abstract:
A thin-film transistor substrate comprising:a gate electrode comprising a light shading conductive material provided on a transparent substrate;a gate insulating film provided on said substrate to cover said gate electrode;a semiconductor active film provided oppositely via said gate insulating film above said gate electrode, a width and a depth of the gate electrode being larger than that of the semiconductor active film thereby shielding the entire semiconductor active film from light impinging on the semiconductor active film from a bottom of the substrate, the semiconductor active film being planar on the gate electrode;a pair of ohmic contact films separately provided on an upper surface of said semiconductor active film;a low-resistance silicon compound film comprising a material selected from a-Si:n.sup.+ and a silicide, the low-resistance silicon compound film being disposed over a surface and one side of both of the ohmic contact films, both sides of the semiconductor active film, and a surface of the gate insulating film to cover the corresponding ohmic contact film and the side of the semiconductor active film superposed on the corresponding ohmic contact film; anda source electrode and a drain electrode provided on said low-resistance silicon compound film to block holes from the semiconductor active film, the source and drain electrodes comprising one of aluminum and an aluminum alloy.