The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 1981
Filed:
Apr. 27, 1979
Walter F Reichert, East Brunswick, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A Schottky barrier field effect transistor is made by coating the surface of a body of semiconductor material with a metal layer having good ohmic contact with the semiconductor material and defining the metal layer to form spaced source and drain contacts. A relatively thick layer of an insulating material such as silicon oxide or silicon nitride, is coated over the source and drain contacts and the exposed portions of the surface of the semiconductor material between the source and drain contacts. Using a photoresist mask, an opening is etched through the insulating layer to the surface of the semiconductor material over the space between the source and drain contacts with the opening being etched back slightly from the edges of the photoresist mask. Using the photoresist mask as a deposition mask, a metal film is deposited through the opening in the insulating layer onto the exposed surface of the semiconductor material to form the gate. After removing the photomask, a metal contact is plated on the gate to substantially fill the opening in the insulating layer.