Patent ID: 7462517
Filing Date: 2008-12-09
Classification: G02B,G02F,H01L

Abstract:
1. A method of fabricating a semiconductor device comprising a plurality of thin film transistors, the method comprising: forming a base film on a substrate; forming a semiconductor film on the base film; providing a solution containing a catalytic element for promoting a crystallization of the semiconductor film on the semiconductor film; crystallizing the semiconductor film provided with the solution by a heat treatment; removing the catalytic element in the crystallized semiconductor film; and etching the crystallized semiconductor film into a plurality of semiconductor layers, each having at least a channel region for a thin film transistor, wherein standard deviations of threshold voltages and subthreshold coefficients are 0.1 V or less and 10 mV/dec or less, respectively, when a collective of threshold voltages and a collective of subthreshold coefficients exhibited by the plurality of respective thin film transistors are made a population.