Patent ID: 6387737
Filing Date: 2002-05-14
Classification: G02F,H01L

Abstract:
A method of fabricating a semiconductor device, comprising the steps of:forming a gate wiring line by using a first mask; forming an insulating film covering the gate wiring line; forming a first amorphous semiconductor film on the insulating film; forming a second amorphous semiconductor film containing an impurity element to give an n-type conductivity on the first amorphous semiconductor film; forming a first conductive film on the second amorphous semiconductor film; forming a source wiring line and an electrode by selectively removing the insulating film, the first amorphous semiconductor film, the second amorphous semiconductor film, and the first conductive film by using a second mask; forming a second conductive film being in contact with and overlapping with the source wiring line and the electrode; and forming a source region and a drain region comprising the second amorphous semiconductor film, and a pixel electrode made of the second conductive film by selectively removing a part of the first amorphous semiconductor film, the second amorphous semiconductor film, the first conductive film, and the second conductive film by using a third mask.