Patent ID: 6599785
Filing Date: 2003-07-29
Classification: G02F,H01L

Abstract:
A method of manufacturing a semiconductor device comprising the steps of:forming on a first insulating film a first semiconductor film, a second semiconductor film, and a third semiconductor film that are separated from one another; forming a second insulating film on the first semiconductor film, the second semiconductor film, and the third semiconductor film; forming a first shape first electrode adjacent to the first semiconductor film, a first shape second electrode adjacent to the second semiconductor film, and a first shape third electrode adjacent to the third semiconductor film; forming through first doping treatment first concentration impurity regions of one conductivity in the first semiconductor film, the second semiconductor film, and the third semiconductor film by using the first shape first electrode, the first shape second electrode, and the first shape third electrode as masks; forming a second shape first electrode, a second shape second electrode, and a second shape third electrode from the first shape first electrode, the first shape second electrode, and the first shape third electrode; forming through second doping treatment a second concentration impurity region of the one conductivity type in the second semiconductor film, and third concentration impurity regions of the one conductivity type in the first semiconductor film and the second semiconductor film, the second concentration impurity region overlapping the second shape second electrode; and forming through third doping treatment a fourth concentration impurity region and a fifth concentration impurity region in the third semiconductor film, the regions having another conductivity type that is opposite to the one conductivity type.