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:
Sep. 19, 2017
Filed:
Apr. 13, 2015
Power Integrations, Inc., San Jose, CA (US);
Wayne B. Grabowski, Los Altos, CA (US);
Kuo-Chang Yang, Campbell, CA (US);
Kamal Raj Varadarajan, Santa Clara, CA (US);
Sujit Banerjee, Round Rock, TX (US);
Vijay Parthasarathy, Sunnyvale, CA (US);
Power Integrations, Inc., San Jose, CA (US);
Abstract
A method includes defining, on a surface of a material, a plurality of discrete portions of a surface as surface elements having at least one of a laterally-varying size, a laterally-varying shape, and a laterally-varying spacing. A plurality of portions of the material beneath the surface elements are doped with a single quantity of dopant material per element area. The dopant material within the material beneath the surface elements expands to provide a lateral gradient of dopant material in the material beneath the surface elements.