NITRIDE SEMICONDUCTOR DEVICE AND FABRICATION METHOD THEREFOR
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United States of America Patent
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Issued Date -
Dec 21, 2023
app pub date -
Aug 18, 2023
filing date -
Oct 11, 2012
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Abstract
A nitride semiconductor device includes an electron transit layer that is formed of a nitride semiconductor, an electron supply layer that is formed on the electron transit layer, and formed of a nitride semiconductor and that has a recess which reaches the electron transit layer from a surface, a thermal oxide film that is formed on the surface of the electron transit layer exposed within the recess, a gate insulating film that is embedded within the recess so as to be in contact with the thermal oxide film, a gate electrode that is formed on the gate insulating film and that is opposite to the electron transit layer across the thermal oxide film and the gate insulating film, and a source electrode and a drain electrode that are provided on the electron supply layer at an interval such that the gate electrode intervenes therebetween.
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