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:
Apr. 13, 2010
Filed:
Aug. 02, 2006
Applicants:
Jason P. Henning, Carrboro, NC (US);
Allan Ward, Iii, Durham, NC (US);
Inventors:
Jason P. Henning, Carrboro, NC (US);
Allan Ward, III, Durham, NC (US);
Assignee:
Cree, Inc., Durham, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/78 (2006.01); H01L 21/461 (2006.01); H01L 21/31 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device is disclosed that includes a contact and an adjacent film on the surface of an underlying doped semiconductor material. The film has sufficient fixed charge to create an inversion layer adjacent the surface of the doped semiconductor material that under depletion conditions at least balances the number of surface states at the doping concentration of the underlying semiconductor material.