Field effect transistor and method for manufacturing the same
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United States of America Patent
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Nov 7, 2017
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N/A
app pub date -
Nov 17, 2014
filing date -
Jun 1, 2010
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Abstract
Provided is a novel structure of a field effect transistor using a metal-semiconductor junction. The field effect transistor includes a wiring which is provided over a substrate and also functions as a gate electrode; an insulating film which is provided over the wiring, has substantially the same shape as the wiring, and also functions as a gate insulating film; a semiconductor layer which is provided over the insulating film and includes an oxide semiconductor and the like; an oxide insulating layer which is provided over the semiconductor layer and whose thickness is 5 times or more as large as the sum of the thickness of the insulating film and the thickness of the semiconductor layer or 100 nm or more; and wirings which are connected to the semiconductor layer through openings provided in the oxide insulating layer.
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