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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.:

US 4962050 B1

PDFFull Text
Date of Patent:
Oct. 09, 1990

Filed:

Dec. 06, 1988

Gaas fet manufacturing process employing channel confining layers

Applicant:
Inventors:

Arthur E Geissberger, Roanoke, VA (US);

Robert A Sadler, Roanoke, VA (US);

Gregory E Menk, Roanoke, VA (US);

Matthew L Balzan, Roanoke, VA (US);

Assignee:

ITT Corporation, New York, NY (US);

Attorney:

Twomey; Thomas N.

Primary Examiner:

Brian E Hearn

Assistant Examiner:

William Bunch

Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
437 22 ; 148D / ; 148D / ; 148D / ; 148D / ; 357 232 ; 357 15 ; 437 26 ; 437 29 ; 437 39 ; 437176 ; 437912 ;
Abstract

A high speed GaAs FET is provided by forming a sandwiched GaAs channel between AlGaAs layers and employing an Si implant to provide channel doping for the GaAs channel. The poor activation efficiency of Si in AlGaAs relative to its activation efficiency in GaAs provides a channel having a higher active dopant concentration than exists in the adjacent sandwiching layers. This tends to enhance conductivity in the channel relative to the sandwiching layers.

Find Patent Forward Citations

Geissberger, Arthur. (1990). Gaas fet manufacturing process employing channel confining layers (U.S. Patent No. 4962050). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4962050

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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