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:
Jul. 08, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Linda Jelloian, Northridge, CA (US);
Mehran Matloubian, Encino, CA (US);
Loi D Nguyen, Thousand Oaks, CA (US);
Adele Schmitz, Newbury Park, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
437184 ; 437190 ;
Abstract
A metal system that can be adjusted to obtain higher alloying temperatures in AlInAs/GaInAs heterostuctures is disclosed. Increasing the thickness of a Ag layer in the metal system facilitates higher alloying temperatures and, consequently, improved ohmic contact reliability. The system is particularly directed to use in Al.sub.x In.sub.1-x As/Ga.sub.0.47 In.sub.0.53 As with 0.48<x<1 power HFETs.