THIN FILM TRANSISTOR AND METHOD FOR FORMING THE SAME
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United States of America Patent
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Issued Date -
Aug 27, 2009
app pub date -
Oct 28, 2008
filing date -
Oct 30, 2007
priority date (Note) -
Abandoned
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Abstract
A thin film transistor (TFT) and the method of forming the same is provided. The method of forming the TFT on a surface of a substrate, includes the steps of: forming a gate electrode; deposing a gate dielectric on the gate electrode; forming a nanocrystalline silicon (nc-Si) layer and an amorphous silicon (a-Si:H) layer above the gate dielectric, so that the thickness of the nc-Si layer is less than 30 nm thereby reducing off-current; and forming a source/drain electrode. The TFT includes: a gate electrode on a substrate, a gate dielectric on the gate electrode; a nc-Si layer having a thickness less than 30 nm, thereby reducing off-current; an a-Si:H layer; and a source/drain electrode.
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