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:
Jan. 19, 2016
Filed:
Feb. 21, 2014
David W. Johnston, Kensington, NH (US);
Richard Speer, Concord, MA (US);
Joseph Laski, Stoneham, MA (US);
Kailash C. Mishra, North Chelmsford, MA (US);
David W. Johnston, Kensington, NH (US);
Richard Speer, Concord, MA (US);
Joseph Laski, Stoneham, MA (US);
Kailash C. Mishra, North Chelmsford, MA (US);
OSRAM SYLVANIA INC., Wilmington, MA (US);
Abstract
Structures for transitioning between two layers of differing lattice parameters are disclosed. In some embodiments, the structures are in the form of a superlattice that serves as a strain relieving transition between two layers of differing lattice parameters. By controlling the properties of the superlattice, the superlattice can exhibit desirable properties such as transparency to light and lattice matching to one of the two layers of differing lattice parameters. Optoelectronic devices such as light emitting diodes including such superlattices are also disclosed.