Patent ID: 7115448
Filing Date: 2006-10-03
Classification: H01L

Abstract:
1. A method of fabricating a thin film transistor of a top-gate type, in which source and drain electrodes, an island-shaped amorphous silicon film, a gate insulating film and a gate electrode are sequentially laminated, the method comprising: forming a first amorphous silicon layer of the island-shaped amorphous silicon film in contact with the source and drain electrodes; and forming a second amorphous silicon layer of the island-shaped amorphous silicon film on the first amorphous silicon layer to contact the gate insulating film, wherein the growth rate of the first amorphous silicon layer is slower than that of the second amorphous silicon layer and the growth rate of the second amorphous silicon layer is about 500 Å/min, so that contact conductance is dominant when the top-gate type thin film transistor is ON to maximize its ON current.