Patent ID: 7820464
Filing Date: 2010-10-26
Classification: H01L

Abstract:
1. A method of manufacturing a light emitting device comprising: forming a semiconductor film on an insulating material; forming a first insulating film covering the semiconductor film; forming a conductive film on the insulation film by laminating two or more conductive layers; forming a gate electrode by etching the conductive film; adding an n-type impurity element to the semiconductor film using the gate electrode as a mask; etching a side face of the gate electrode; selectively etching a first portion of the gate electrode; adding an n-type impurity element to the semiconductor film through a second part of the gate electrode using the gate electrode except the second portion as a mask after etching the first portion; forming a second insulating film covering the gate electrode; forming wirings on the second insulating film to be in contact with the semiconductor film; and forming a light emitting element on the second insulating film.