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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.:

US 11949041 B1

PDFFull Text
Date of Patent:
Apr. 02, 2024

Filed:

Dec. 15, 2022

Nano-photonics reflector for led emitters

Applicant:

Lumileds Llc, San Jose, CA (US);

Inventors:

Toni Lopez, Aachen, DE;

Venkata Ananth Tamma, San Jose, CA (US);

Assignee:

Lumileds LLC, San Jose, CA (US);

Attorney:
Primary Examiner:

Sonya McCall-Shepard

Int. Cl.
CPC ...
H01L 33/10 (2010.01); B82Y 20/00 (2011.01); G02B 1/00 (2006.01); G02B 5/00 (2006.01); G02B 5/30 (2006.01); G02B 6/122 (2006.01); G02B 27/28 (2006.01); H01L 33/30 (2010.01); H01L 33/32 (2010.01); H01L 33/40 (2010.01); H01L 33/42 (2010.01); H01L 33/46 (2010.01);
U.S. Cl.
CPC ...
H01L 33/10 (2013.01); G02B 6/1225 (2013.01); H01L 33/30 (2013.01); H01L 33/405 (2013.01); H01L 33/42 (2013.01); H01L 33/46 (2013.01); B82Y 20/00 (2013.01); G02B 5/00 (2013.01); H01L 33/32 (2013.01); H01L 2933/0083 (2013.01);
Abstract

A system, method and device for use as a reflector for a light emitting diode (LED) are disclosed. The system, method and device include a first layer designed to reflect transverse-electric (TE) radiation emitted by the LED, a second layer designed to block transverse-magnetic (TM) radiation emitted from the LED, and a plurality of ITO layers designed to operate as a transparent conducting oxide layer. The first layer may be a one-dimension (1D) distributed Bragg reflective (DBR) layer. The second layer may be a two-dimension (2D) photonic crystal (PhC), a three-dimension (3D) PhC, and/or a hyperbolic metamaterial (HMM). The 2D PhC may include horizontal cylinder bars, vertical cylinder bars, or both. The system, method and device may include a bottom metal reflector that may be Ag free and may act as a bonding layer.

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