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:
Nov. 05, 1996
Filed:
Jun. 07, 1995
Applicant:
Inventor:
William U Liu, Richardson, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 31 ; 437126 ; 437128 ; 437133 ; 148D / ;
Abstract
In one form of the invention, a bipolar transistor is disclosed, the transistor comprising a GaAs substrate in the (111) orientation 100, and an InGaAs region 106 over the substrate 100, the InGaAs region 106 having a first surface and a second surface, wherein the mole fraction of In in the InGaAs region 106 varies from said first surface to said second surface.