Patent ID: 6479331
Filing Date: 2002-11-12
Classification: G09G,H01L,Y10S

Abstract:
A method for manufacturing a semiconductor device comprising a plurality of n-channel and p-channel type thin film transistors, said method comprising:forming a semiconductor film comprising silicon over a substrate comprising a glass; crystallizing said semiconductor film by a heat treatment; patterning said semiconductor film to form semiconductor regions; doping first impurities into said semiconductor regions, wherein said first impurities comprise an n-type impurity and are doped by an ion doping process; forming a mask over a portion of said semiconductor regions; doping second impurities into at least one of said semiconductor regions over which said mask is not formed, wherein said second impurities comprise a p-type impurity and are doped by an ion doping process; and performing a rapid thermal annealing to said semiconductor regions by irradiating a light comprising an infrared light after said doping process.