Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2008-01-25
2010-02-16
Pert, Evan (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257S013000, C257S099000, C257SE33068, C257SE51021, C438S027000, C438S029000
Reexamination Certificate
active
07663153
ABSTRACT:
A light emitting diode (LED) is provided. The LED at least includes a substrate, a saw-toothed multilayer, a first type semiconductor layer, an active emitting layer and a second type semiconductor layer. In the LED, the saw-tooth multilayer is formed opposite the active emitting layer below the first type semiconductor layer by an auto-cloning photonic crystal process. Due to the presence of the saw-tooth multilayer on the substrate of the LED, the scattered light form a back of the active emitting layer can be reused by reflecting and recycling through the saw-tooth multilayer. Thus, all light is focused to radiate forward so as to improve the light extraction efficiency of the LED. Moreover, the saw-tooth multilayer does not peel off or be cracked after any high temperature process because the saw-tooth multilayer has the performance of releasing thermal stress and reducing elastic deformation between it and the substrate.
REFERENCES:
patent: 6091085 (2000-07-01), Lester
patent: 6563141 (2003-05-01), Dawson et al.
patent: 6977774 (2005-12-01), Kawakami et al.
patent: 7136217 (2006-11-01), Kawakami et al.
patent: 2003/0057444 (2003-03-01), Niki et al.
patent: 2005/0133796 (2005-06-01), Seo et al.
patent: 2007/0221929 (2007-09-01), Lee et al.
patent: 1874012 (2006-12-01), None
Chinese First Examination Report of China Application No. 2007101886664, dated Sep. 25, 2009.
Chao Chu-Li
Chao Shiuh
Huang Chen-Yang
Ku Hao-Min
Xuan Rong
Industrial Technology Research Institute
J.C. Patents
National Tsing Hua University
Pert Evan
Wilson Scott R
LandOfFree
Light emitting diode with embedded saw-tooth multilayer... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light emitting diode with embedded saw-tooth multilayer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light emitting diode with embedded saw-tooth multilayer... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4186539