Patent ID: 7459352
Filing Date: 2008-12-02
Classification: G02F,H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising: forming at least first and second semiconductor layers over a substrate; forming a first insulating film over the first and second semiconductor layers; forming at least first and second gate electrodes, at least one source line for a pixel portion, and an electrode of a terminal portion over the first insulating film; introducing an N-type impurity to at least the first semiconductor layer with the first gate electrode as a mask to form a first N-type impurity region; providing a tapered portion to the first and second gate electrodes by etching; introducing an N-type impurity to at least the first semiconductor layer through the tapered portion of the first gate electrode to form a second N-type impurity region; plating the source line of the pixel portion and the electrode of the terminal portion with a material including Cu; forming a second insulating film covering the source line of the pixel portion and the terminal portion; and forming a gate line of the pixel portion and a source line of a driver circuit on the second insulating film.