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:
Aug. 31, 1999
Filed:
Jan. 31, 1997
Applicant:
Inventors:
Adolfo C Reyes, Tempe, AZ (US);
Marino J Martinez, Phoenix, AZ (US);
Mark R Wilson, Mesa, AZ (US);
Julio C Costa, Phoenix, AZ (US);
Ernest Schirmann, Phoenix, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257192 ; 257194 ; 257280 ; 257282 ; 257289 ;
Abstract
A semiconductor device (20) is formed on a compound semiconductor substrate (21). The semiconductor device (20) is oriented on the surface (40) of the compound semiconductor substrate (21) such that the physical forces that result from the thermal heating or cooling of the compound semiconductor substrate (21) are essentially equal. This orientation reduces the variability of the drain to source current of the semiconductor device (20) as the semiconductor device (20) is operated at different temperatures.