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:
Mar. 04, 2014
Filed:
Jan. 10, 2007
Christopher Harris, Taby, SE;
Cem Basceri, Reston, VA (US);
Thomas Gehrke, Manassas Park, VA (US);
Cengiz Balkas, Reston, VA (US);
Christopher Harris, Taby, SE;
Cem Basceri, Reston, VA (US);
Thomas Gehrke, Manassas Park, VA (US);
Cengiz Balkas, Reston, VA (US);
Cree, Inc., Durham, NC (US);
Abstract
A dimpled substrate and method of making including a substrate of high thermal conductivity having a first main surface and a second main surface opposite the first main surface. Active epitaxial layers are formed on the first main surface of the substrate. Dimples are formed as extending from the second main surface into the substrate toward the first main surface. An electrical contact of low resistance material is disposed on the second main surface and within the dimples. A back contact of low resistance and low loss is thus provided while maintaining the substrate as an effective heat sink.