Patent ID: 7279348
Filing Date: 2007-10-09
Classification: H01L

Abstract:
1. A thin film transistor device manufacturing method comprising the steps of: forming a semiconductor film in a first conductivity type thin film transistor forming region and a second conductivity type thin film transistor forming region on a substrate respectively; forming a gate insulating film and a gate electrode on the semiconductor film; forming first conductivity type source/drain regions by introducing a first conductivity type impurity into the semiconductor film; forming a first interlayer insulating film on an overall upper surface of the substrate; forming a first conductive film on the first interlayer insulating film; forming a resist film, which covers the first conductivity type thin film transistor forming region and a display electrode forming region, on the first conductive film; forming second conductivity type source/drain regions by introducing a second conductivity type impurity into the semiconductor film in the second conductivity type thin film transistor forming region; removing the resist film on the first conductivity type thin film transistor forming region to leave the resist film only on the display electrode forming region; forming a display electrode by etching the first conductive film while using the resist film as a mask; removing the resist film from the display electrode forming region; forming a second interlayer insulating film on an overall upper surface of the substrate; forming contact holes that reach source/drain regions of the thin film transistor from a surface of the second interlayer insulating film; forming a second conductive film on the overall upper surface of the substrate; and processing the second conductive film into a predetermined pattern.