Patent ID: 6261880
Filing Date: 2001-07-17
Classification: G02F,H01L

Abstract:
A method of forming a thin film transistor, said method comprises the following steps of:forming a first metal layer on an insulating substrate;forming a first insulating layer on said first metal layer;forming an active layer on said first insulating layer;forming a contact layer on said active layer;defining patterns of said contact layer, said active layer, said first insulating layer, and said first metal layer;forming a second insulating layer above said contact layer and said substrate;forming a transparent conducting layer above said second insulating layer;defining patterns of said second insulating layer and said transparent conducting layer to expose a portion of a surface of said contact layer;forming a second metal layer above said transparent conducting layer and said contact layer;defining patterns of said second metal layer to form source/drain (S/D) contact structures;etching said contact layer by using said second metal layer as a mask;forming a passivation layer on said second metal layer, said transparent conducting layer and said substrate; anddefining patterns of said passivation layer.