Invention Grant
- Patent Title: High reflective board or substrate for LEDs
- Patent Title (中): 高反射板或LED基板
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Application No.: US13370696Application Date: 2012-02-10
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Publication No.: US09105824B2Publication Date: 2015-08-11
- Inventor: Sten Heikman , Zhimin Jamie Yao , James Ibbetson , Fan Zhang
- Applicant: Sten Heikman , Zhimin Jamie Yao , James Ibbetson , Fan Zhang
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Koppel, Patrick, Heybl & Philpott
- Main IPC: H01L33/46
- IPC: H01L33/46 ; H01L33/60 ; H01L33/54 ; H01L33/62

Abstract:
Light emitting devices and methods are disclosed that provide improved light output. The devices have an LED mounted to a substrate, board or submount characterized by improved reflectivity, which reduces the absorption of LED light. This increases the amount of light that can emit from the LED device. The LED devices also exhibit improved emission characteristics by having a reflective coating on the submount that is substantially non-yellowing. One embodiment of a light emitting device according to the present invention comprises a submount having a circuit layer. A reflective coating is included between at least some of the elements of the circuit layer. A light emitting diode mounted to the circuit layer, the reflective coating being reflective to the light emitted by the light emitting diode. In some embodiments, the reflective coating comprises a carrier with scattering particles having a different index of refraction than said carrier material.
Public/Granted literature
- US20120199843A1 HIGH REFLECTIVE BOARD OR SUBSTRATE FOR LEDS Public/Granted day:2012-08-09
Information query
IPC分类: