Patent ID: 6677221
Filing Date: 2004-01-13
Classification: G02F,H01L

Abstract:
A method for fabricating a semiconductor device, said method comprising:forming a tantalum oxide film in contact with a glass substrate, forming a gate wiring over the tantalum oxide film, forming a gate insulating film adjacent to the gate wiring over the glass substrate, forming a semiconductor film adjacent to the gate wiring with the gate insulating film interposed therebetween, crystallizing the semiconductor film into a crystalline semiconductor film, patterning the crystalline semiconductor film to form a crystalline semiconductor layer, adding selectively an impurity element selected from the group consisting of group XIII and XV into the crystalline semiconductor layer to form at least a high concentration impurity region, and adding selectively an impurity element selected from the group consisting of group XIII and XV into the crystalline semiconductor layer to form a low concentration impurity region.