Patent ID: 7125756
Filing Date: 2006-10-24
Classification: G02F,H01L

Abstract:
1. A method for fabricating a thin film transistor for a liquid crystal display device, comprising: forming a gate electrode; forming a first insulating layer on the gate electrode; forming a semiconductor layer on the first insulating layer having a first etching rate; forming a conductive layer on the semiconductor layer, the conductive layer having a second etching rate; forming a second insulating layer having a third etching rate; forming plurality of openings on the second insulating layer using a first photoresist pattern; forming a pixel electrode on the second insulating layer using a second photoresist pattern; and forming a source electrode and a drain electrode by removing the conductive layer and the semiconductor layer on a channel region using the second photoresist pattern as a mask, wherein the removing includes using at least one etchant selected based on the first, second, and third etching rates.