Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2008-05-27
2008-05-27
Patel, Ashok (Department: 2889)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S113000, C313S498000, C362S800000, C362S341000
Reexamination Certificate
active
11554891
ABSTRACT:
A light-emitting device of high light extraction efficiency comprises a first substrate, a light-emitting chip positioned on the first substrate and configured to emit light beams, a fluorescent material positioned on the light-emitting chip, a photonic crystal positioned on the fluorescent material and a reflector positioned on the photonic crystal and configured to reflect the light beam to the fluorescent material. The first substrate is preferably a metallic cup, and the light-emitting chip is positioned at the bottom of the metallic cup. The photonic crystal includes a second substrate and a plurality of protrusions positioned on the second substrate. Each of the protrusions includes a bottom end positioned on the second substrate and a tip portion smaller than the bottom end. The plurality of protrusions can be triangular pillars, semicircular pillars, sinusoid pillars, pyramids, or cones.
REFERENCES:
patent: 4733335 (1988-03-01), Serizawa et al.
patent: 4843280 (1989-06-01), Lumbard et al.
patent: 5043716 (1991-08-01), Latz et al.
patent: 5813753 (1998-09-01), Vriens et al.
patent: 5998925 (1999-12-01), Shimizu et al.
patent: 7084434 (2006-08-01), Erchak et al.
patent: 7184111 (2007-02-01), Chua et al.
patent: 2001/0010449 (2001-08-01), Chiu et al.
patent: 2004/0252509 (2004-12-01), Lin
patent: 2006/0002150 (2006-01-01), Kim
patent: 2006/0060868 (2006-03-01), Orita
patent: 2006/0145172 (2006-07-01), Su et al.
patent: 2007/0064407 (2007-03-01), Huang et al.
Chao Chu Li
Chi Jim Yong
Chu Cheng Wei
Huang Chen Yang
Industrial Technology Research Institute
King Anthony
Patel Ashok
WPAT, PC
LandOfFree
Light-emitting device 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 device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light-emitting device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3946082