Invention Grant
US07674639B2 GaN based LED with etched exposed surface for improved light extraction efficiency and method for making the same
失效
具有蚀刻暴露表面的GaN基LED,以提高光提取效率及其制备方法
- Patent Title: GaN based LED with etched exposed surface for improved light extraction efficiency and method for making the same
- Patent Title (中): 具有蚀刻暴露表面的GaN基LED,以提高光提取效率及其制备方法
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Application No.: US11504435Application Date: 2006-08-14
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Publication No.: US07674639B2Publication Date: 2010-03-09
- Inventor: Steven D. Lester
- Applicant: Steven D. Lester
- Applicant Address: US CA Sunnyvale
- Assignee: Bridgelux, Inc
- Current Assignee: Bridgelux, Inc
- Current Assignee Address: US CA Sunnyvale
- Agent Calvin B. Ward
- Main IPC: H01L21/00
- IPC: H01L21/00

Abstract:
A light-emitting device and the method for making the same are disclosed. The device includes a substrate, a light-emitting structure and a light scattering layer. The light-emitting structure includes an active layer sandwiched between a p-type GaN layer and an n-type GaN layer, the active layer emitting light of a predetermined wavelength when electrons and holes from the n-type GaN layer and the p-type GaN layer, respectively, combine therein. The light scattering layer includes a GaN crystalline layer characterized by an N-face surface. The N-face surface includes features that scatter light of the predetermined wavelength. The light-emitting structure is between the N-face surface and the substrate.
Public/Granted literature
- US20080035936A1 GaN based LED with improved light extraction efficiency and method for making the same Public/Granted day:2008-02-14
Information query
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