Process for producing a SiC semiconductor device
First Claim
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1. A process for producing a junction gate field effect transistor, comprising the steps of:
- growing a first single-crystal film of SiC of one conductivity type on a single-crystal silicon substrate of said one conductivity type;
forming a second single-crystal SiC film of the opposite conductivity type on said first film;
forming a third single-crystal SiC film of said one conductivity type on said second film;
etching said third film so that only a mesa shaped portion of said third film remains on a central portion of said second film;
forming an ohmic gate electrode on the upper surface of said mesa; and
forming respective ohmic source and drain electrodes on the surface of said second film with said mesa being disposed between said source and drain electrodes.
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Abstract
A process for producing a SiC semiconductor device comprising growing a single-crystal film of SiC on a single-crystal substrate of Si and forming the structure of semiconductor device such as diodes, transistors, etc., on said SiC single-crystal film, thereby obtaining a SiC semiconductor device on a commercial scale.
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7 Claims
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1. A process for producing a junction gate field effect transistor, comprising the steps of:
growing a first single-crystal film of SiC of one conductivity type on a single-crystal silicon substrate of said one conductivity type;
forming a second single-crystal SiC film of the opposite conductivity type on said first film;
forming a third single-crystal SiC film of said one conductivity type on said second film;
etching said third film so that only a mesa shaped portion of said third film remains on a central portion of said second film;
forming an ohmic gate electrode on the upper surface of said mesa; and
forming respective ohmic source and drain electrodes on the surface of said second film with said mesa being disposed between said source and drain electrodes.- View Dependent Claims (2, 3, 4, 5, 6, 7)
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