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Editorial:
Solid State Lighting Success is Niche to Niche
... Success is correctly defined as, “The progressive realization of a worthwhile dream or goal.” Is the solid state lighting industry succeeding? After investing some time with industry leaders from across the globe at the recent LED Leadership Conference, it’s clear we are progressively realizing those very worthwhile dreams and...
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2012
SSL Summit Series keeps its focus to Smarter, Better Lighting
Launched in 2008, the SSL
Summit has tweaked its mission to facilitate a future of better lighting.
October's New York City meet really hit the target, and we're picking up the
pace for LA/Long Beach April 3-4, 2012. The Summit brings together key lighting
influencers with industry thought leaders, pioneers, and innovators from the
across the solid state lighting eco-system to engage their visions of the future
of lighting.
Quality is the gate, the future is the focus...
Showcase participants and sponsors are vetted to separate
the wheat from the chaff... Look into the series information at www.SSLsummit.com
for the details. Sponsorships and showcase positions are available now, and
event registration will open in early January.
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Commentary...
Solid State Lighting Success is Niche to Niche
... Success is correctly defined as, “The progressive realization of a worthwhile dream or goal.” Is the solid state lighting industry succeeding? After investing some time with industry leaders from across the globe at the recent LED Leadership Conference, it’s clear we are progressively realizing those very worthwhile dreams and...
View the
full story at the bottom of the current news page, or
if this is a back issue, go here...
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December 14, 2006...Researchers at UC Santa Barbara Solid State Lighting & Display Center and
the Japan Science & Technology Agency Exploratory Research for Advanced
Technology program (JST ERATO) report setting new records for nonpolar and semipolar
LED efficiency. Shuji Nakamura, Steve DenBaars, and James Speck, all professors
of materials, are three important researchers whose work led to the nonpolar
and semipolar GaN LED performance milestone.
These new LEDs are based on gallium nitride with nonpolar and semipolar orientations.
With the nonpolar and semipolar GaN crystal orientation, the LEDs are able to
achieve higher quantum efficiencies, and they emit polarized light. Another
benefit of the nonpolar and semipolar GaN LEDs is that they do not have the
“blue shift” which causes the emitted light to have a shorter wavelength
as the drive current increases.
Earlier attempts at nonpolar and semipolar GaN LEDs were plagued with high
defect density. The energy robbing defects prevented the researchers from producing
the efficiency levels sought. The researchers have since been able to greatly
reduce the defect density with improved GaN crystal growth. Also, the LEDs of
the previous attempt were not optimized for nonpolar and semipolar GaN, according
to Nakamura at the time. Nakamura expected large gains in brightness and efficiency
once the nonpolar and semipolar GaN growth was optimized to reduce defect density
and the LEDs were also optimized for use with nonpolar and semipolar GaN.
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Nichia Responds to Korean Patent Invalidation LIGHTimes StaffDecember 15, 2006...Nichia has responded to the recent invalidation of a Korean design patent by
a case against the company brought by Korean company Baron Tech. Nichia claims
that the patent was invalid because the company followed the advice of a patent
advisor who incorrectly told them to file the patent application as a design
patent. Then when the company officials realized that the patent was incorrectly
filed in Korea, Nichia says it gave up the rights to the patent on December
1. Nichia also said that the patent which was specifically written for the unique
patent rules of Korea, has no specific US or other international counterpart
patents. Therefore, according to Nichia, the recent court ruling that invalidated
the Korean design patent will have no bearing on any other patents in the United
States or other countries.
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Arima Optoelectronics Gets LED Capacity Increase LIGHTimes StaffDecember 15, 2006...Veeco Instruments of Woodbury, New York USA, reported that Taiwan LED maker,
Arima Optoelectronics, has purchased a TurboDisc E450 As/P metal organic chemical
vapor deposition (MOCVD) system for automotive LED applications. The E450 system
is Veeco’s largest capacity MOCVD system. Veeco points out that the system
has integrated RealTemp 200 technology for direct wafer temperature control,
and fast gas switching for strict control of interface abruptness, which increase
process stability and improve material quality.
Dr. P. J. Wang, President of Arima Optoelectronics, said, "We are confident
in the TurboDisc E450's very high throughput and minimal downtime due to its
low maintenance TurboDisc reactor. We expect that the E450 will allow us maximum
value as we expand our production of red, orange and yellow (R/O/Y) LEDs."
Veeco
News Release
Carmanah Thrives on Niche Applications Scott McMahanDecember 14, 2006...Art Aylesworth, Carmanah's president and CEO was recently named Entreprenuer of the Year for the Pacific
Region in Canada by the National Post. As an article
in the National Post points out, the company, which is over two decades
old, has seen a tremendous increase in revenue since Aylesworth took over in
2000. That year the company had revenues of about $1.8 million. As of 2005,
the company’s revenues were approximately $38 million. This year the revenues
are expected to be even higher. The company grew almost 70 percent per year
for each of the five years. The company has thrived on producing and selling
LED products not for general lighting, but for niche applications including:
solar powered lighting for marine, aviation, roadway, transit, and industrial
worksites. Other applications include LED illuminated signs for gaming, point
of purchase, identity, and architectural applications. The LED product sales
are in addition to the company’s solar power system production and sales
which got a big boost in 2005 with the acquisition of Soltec Powersource Limited.
The company sells solar powered LED-based airfield beacons, marine buoys, and
traffic lights in over 100 countries around the world. The 700-series lights
were developed for the US coastguard, becoming the first solar-powered LED-based
lights used in the US system. They were later adopted by many other navigation
authorities around the world, including the National Ports Authority. Just this month the company announced many new sales and installations world-wide.
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Arrow Electronics to Distribute Color Kinetics’ OEM Products LIGHTimes StaffDecember 13, 2006...Color Kinetics reports that Arrow Electronics will now distribute Color Kinetics
products in North America, after it signed a distribution agreement with the
electronics distributor. Under the agreement, Arrow Electronics can distribute
Color Kinetic’s original equipment manufacturer (OEM) products including,
intelligent white and RGB digital light engines (DLEs), lamps, and power and
data controllers and modules required for illumination systems. Color Kinetics
says that Arrow customers will benefit from its nearly a decade of experience
in the field, spanning thermal, optical and binning management, control, power,
and networking.
Color Kinetics whose products have been adopted by many lighting fixture manufacturers,
has successfully introduced LED technology into vertical markets through OEM
partnerships in entertainment and gaming, aerospace, consumer products, automotive
aftermarket lighting, and pool and spa products.
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Eight of Nichia’s Korean Design Patents Declared Invalid Scott McMahanDecember 12, 2006...Seoul Semiconductor reported that Baron Tech Co., Ltd., won its “Design
Patent Invalidation” trial against Nichia for infringing eight Korean
design patents. The Korean patents in question cover essentially the same technology
as its US design patents: D 491,538, D 490,784, D 499,385, and D 503,388. The
patents primarily refer to a side-view LED design for backlighting LCD handsets.
Baron Tech, a little known backlight LED producer, is the first company in some
time to stand up to and defeat Nichia in patent litigation.
In January, Nichia brought a patent lawsuit against South Korea-based Seoul
Semiconductor, Ltd. and its U.S. subsidiary, California-based Seoul Semiconductor,
Inc. The complaint alleged patent infringement of the four US design
patents: D 491,538, D 490,784, D 499,385, and D 503,388. (Ref: Coverage).
In a somewhat related patent issue, this time between Nichia and Baron Tech, Korea’s Intellectual Property Office (KIPO) ruled that Nichia’s
eight Korean design patents for the side-view LEDs are invalid.
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Cree Expands Patent Litigation Against BridegLux LIGHTimes StaffDecember 12, 2006...Cree Inc. of Durham, North Carolina USA, reported that it has filed more patent
complaints against LED product maker, BridgeLux. According to Cree, the latest
complaints allege infringement of U.S. Patent Nos. 6,614,056 ("the '056
patent") and 6,885,036 ("the '036 patent"). These claims are
in addition to the previously filed claims based on Cree's U.S. Patent No. 6,657,236
as well as U.S. Patent No. 5,686,738. Cree says the patents, 056 and '036, are
both entitled "Scalable LED With Improved Current Spreading Structures,"
and relate to contact structures in LEDs with improved current spreading. Cree
says it added these patents in a counterclaim in response to BridgeLux's complaint
filed in the U. S. District Court for the Eastern District of Texas filed in
October.
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California Micro Devices Releases New Flash LED Drivers for Mobile Handsets LIGHTimes StaffDecember 12, 2006...California Micro Devices has launched its new flash LED drivers for mobile
handsets. The company based in Milpitas, California USA, unveiled the CM9410
and CM9412 which can drive up to 1A. The company says it offers multiple operating
modes in an efficient device, with a tiny form factor. The CM9412 is in a 3mm
x 3mm TDFN (Thin DFN) package. The CM9410 and CM9412 have a voltage input range
of 3.0V to 5.5V and feature a typical efficiency of 85 percent. Their modes
of operation include: shutdown, torch, and two flash modes that can be selected
through a user friendly single wire interface.
The company says that because constraints on power consumption, space, and
cost in addition to requirements for long battery life, the company produced
the new LED flash drivers with optimized efficiency and minimized footprint.
The drivers feature overcurrent and overvoltage protection in addition to undervoltage
lockout to limit inrush current. California Micro Devices indicated that volume
production of the devices will begin in the first quarter of 2007. Company
News Release Our news features are reported
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Commentary & Perspective...
Solid State Lighting Success is Niche to Niche Tom Griffiths - PublisherDecember 11, 2006...Success is correctly defined as, “The progressive realization of a
worthwhile dream or goal.” Is the solid state lighting industry succeeding?
After investing some time with industry leaders from across the globe at the
recent LED Leadership Conference, it’s clear we are progressively realizing
those very worthwhile dreams and goals, but not in the way you might consider
it if compared to a sporting event or a piano lesson. It’s more like a
symphony learning a new performance piece, but without a conductor (or even
a semi-conductor…). The title of the symphony is, of course, “Make
Solid State Lighting Ubiquitous" (played as quickly as possible), in nothing-flat.
For obvious reasons, “the gang” of leading companies shouldn’t
and wouldn’t all get together and carve up parts of this multi-faceted
performance. "Here Mike, you take the desk lamps, and Chuck, you can take the
stadium lights this year, and BJ…. hmmm, finish up making Taiwan one big
LED manufacturing plant and take whatever parts you want, but leave some for
Osram, Nicha, and Toyoda Gosei." Although it might appear efficient at the outset,
the lack of those free market motivations tend to muck up the works. This orchestra
has to figure it out for themselves, by watching the other players, and subtly
tuning their tone and pace to meet the demands of the audience for a quality
result. Not an easy task, but fortunately, each player has clear incentives
to make it “sound right”. Even better, there a number of bright young
stars sitting in each section that are putting out good sounds and willing to
take over “first seat” in a heartbeat.
One key way we’ll see the symphony “find its sound” will be by
moving niche-to-niche. A question raised towards the CEO panel set the stage
nicely. “Will there be enough niche applications to continue to sustain
the [advanced/high-brightness LED] industry indefinitely?” Lumileds’
CEO Mike Holt summed it up succinctly along the lines of, “It’s
worked pretty well for over a decade so far…” That’s because
new “niches” continue to rise up as we figure out the next problem
that the technology enables us to solve. Desktop computers began as toys for hobbists, then came decent word processing programs and spreadsheets, which made them useful to independent
workers and small business owners who couldn’t afford a mini-computer,
then BLAM, they were everywhere. Desktop computers are obviously now a big niche.
In a recent chat with industry expert Bob Steele of Strategies Unlimited fame (who
you can hear from directly in San Jose at February’s upcoming Strategies
in Light conference, or later in Asia at our own Blue
2007 event in mid-April), Bob pointed out that the Wal-Mart “LED
strips lighting up the freezer story”, might well be the application
story of the year. You need to read the article, but the synopsis is that here
we have an entrenched fluorescent application, lighting the inside of refrigerated
display cases, which is substantially better served-- at lower operating costs --by LEDs. Enough savings that it represents "the biggest investment to date
in LED lighting for interior application [$30 million]. And it is also the single
largest installation of white LED lighting replacing fluorescent lighting
in a display lighting application." While clearly better than an incandescent
solution, (here’s an idea, lets put a bright little heater next to the ice
cream!) anyone who has one in their garage knows that fluorescents don’t
like cold. They have a hard time getting started, take a good while to get to
full brightness, and then run at a decreased efficiency. I’ve heard that it's as low as half their normal 80 lumens/watt, and I’m sure someone will
correct me quickly if I got that wrong. LEDs on the other hand love cold…
passionately. So much so, that any fun loving LED provider would be thrilled
to spec their product at a comfortable 25C down there near the chip, if they
could get away with running it in a freezer with a fan and…. Hey wait a
minute…
You can add to that with Wal-Mart’s neat trick of placing motion sensors
ahead of a shopper’s path so they don’t have to run the freezer light
full time. It simply flips on real quickly before the shopper has a chance to
get around the corner. How cool is that? The current crop of LEDs are more efficient
on a lumen per watt basis. They can flip on and off instantly without a warm-up
time, they have three times the lifetime and they even produce a better light
to make the product more attractive. It's easy to see the reality in their expectation
of a 66% reduction in freezer lighting energy costs.Note also that Wal-Mart
is very serious about their “green” initiatives, so much so that they
invite their competitors to come see how they’ve done it. With the volume
needs of the world’s largest company backing a solid state lighting solution
like this, do you think the price of those light strips might be driven down
a teensy bit. LEDs take the niche!
Chuck Swoboda, CEO of Cree, said at the conference, that the industry will need to bring its
costs and prices into line with what you see from the cost of ownership for fluorescents before the wave will really hit. Lumileds' Mike Holt gave a passionate talk on how we
need to look at how a photon is put to use, and sell the benefit of using it
differently to get a job done in a way it simply couldn’t be done before. Fortunately, the two competing CEOs
don't agree on a single strategy, and next time around you can expect some additional comments
on why that's exciting. To my mind, the LEDsicle inside Wal-Mart
is a big step in both directions at once, and... that's success. If you have questions about
the solid state lighting and compound semiconductor industries or
have
news or views to share, we want to hear from you! Feel free to contact
us anytime.

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