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. 15, 2003
Filed:
Feb. 27, 2002
Applicant:
Inventors:
Edouard de Frésart, Tempe, AZ (US);
John W. Steele, Chandler, AZ (US);
David Theodore, Mesa, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/1331 ;
U.S. Cl.
CPC ...
H01L 2/1331 ;
Abstract
A method of manufacturing a semiconductor component includes providing a substrate ( ) having a first doping concentration and growing an epitaxial layer ( ) over the substrate. The epitaxial layer has a second doping concentration lower than the first doping concentration, and the epitaxial layer has at least two effective, as-grown thicknesses. The resulting composite substrate is suitable for an integrated circuit having both high and low voltage portions.