Invention Grant
- Patent Title: Nano-photonics reflector for LED emitters
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Application No.: US16160713Application Date: 2018-10-15
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Publication No.: US11024767B2Publication Date: 2021-06-01
- Inventor: Toni Lopez , Venkata Ananth Tamma
- Applicant: Lumileds LLC
- Applicant Address: US CA San Jose
- Assignee: Lumileds LLC
- Current Assignee: Lumileds LLC
- Current Assignee Address: US CA San Jose
- Priority: EP18152921 20180123
- Main IPC: H01L33/10
- IPC: H01L33/10 ; H01L33/40 ; H01L33/42 ; G02B6/122 ; H01L33/30 ; H01L33/46 ; B82Y20/00 ; H01L33/32 ; G02B5/00

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.
Public/Granted literature
- US20190115496A1 NANO-PHOTONICS REFLECTOR FOR LED EMITTERS Public/Granted day:2019-04-18
Information query
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