Patent ID: 6445428
Filing Date: 2002-09-03
Classification: G02F,H01L

Abstract:
A method of fabricating a thin-film transistor, comprising the steps of:forming a gate electrode on a substrate; forming a gate insulation film on said substrate so as to cover said gate electrode; forming a semiconductor film on said gate insulation film; forming an electrode layer on said semiconductor film by depositing a first conductor layer containing a refractory metal element and a second conductor layer containing Al consecutively; applying a dry etching process to said electrode layer to form a first ohmic electrode parttern located at a first side of said gate electrode and a second ohmic electrode pattern located at a second, opposite side of said gate electrode; covering said first and second ohmic electrode patterns by a protective insulation film such that said protective insulation film contacts each of said first and second ohmic electrode patterns intimately; forming a contact hole in said protective insulation film so as to expose said second conductor layer at said contact hole; and forming a pixel electrode on said protective insulation film to as to achieve an electrical contact with said second ohmic electrode pattern at said contact hole.