2012-12-14

LayTec : Advanced Stress Control of GaN on Silicon(001) with EpiCurve TT during HEMT Growth

The challenges of GaN growth on Si(111), especially for LED growth, are well known and meanwhile controllable. Cooldown-assisted layer cracking as a result of high tensile stress can be prevented and crystal quality can be enhanced by sophisticated interlayers. Numerous institutions worldwide are already using LayTec‘s EpiCurve  TT with advanced curvature resolution for high quality GaN devices on large scale Silicon substrates. Now, this experience is being transferred to growth on Si(001) and Si(110), because GaN based power electronics can be easily in...
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2012-12-06

Our Fascination with Fluorescents and the end of the Affair?

Earlier this week, news emerged from the US that researchers have developed a new type of lighting that could replace fluorescent bulbs. The new source is reportedly more efficient, produces a better quality of light and is flicker free. Whilst the concept of light from polymers is certainly intriguing, I was somewhat taken aback by the attention the story received. After all, we already have viable alternatives for the fluorescent tube that does all of the above. So why are we under the impression that we don’t? To understand the context we need to look back. The UK ...
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2012-10-26

60V, Synchronous Buck LED Driver Delivers Over 300W of LED Power

Linear Technology announces the LT3763, a synchronous buck LED driver controller that delivers over 300W of LED power. Its 6V to 60V input voltage range makes it ideal for a wide variety of applications, including automotive, industrial and architectural lighting. Similarly, its output voltage can be set from 0V to 55V, enabling it to drive a wide range of LEDs in a single string. The LT3763 offers both input and output current monitors and limiting, which accurately control both input and output current. Similarly, the LT3763 also offers accurate output voltage reg...
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2012-10-25

Merck to Use Epson Ink Technology to Manufacture Ink for Large OLED Displays

Merck and Seiko Epson Corporation today announced a cooperation and licensing agreement for inkjet inks used in the manufacture of organic light-emitting diode (OLED) displays. According to the agreement, Epson will supply Merck with ink technology that dissolves Merck’s OLED materials so that they can be used for the production of printable displays used in OLED television screens. Financial terms of the business agreement were not disclosed. The use of inkjet technology for printing OLED displays requires a combination of long-lasting OLED materials a...
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2012-09-26

Basics when Designing and Picking Light Sources

Light that is visible to human eyes is simply electromagnetic waves whose wavelength which happens to be in the perceptible range. The unit that we used commonly to measure the energy of light is watts and the quantities we used to describe a light’s characteristics are radiometric. How light is perceived by each one of us is varied, our eyes and brain can give a different perception of a similar light‘s color and brightness. We, the human, are typically responding to light with wavelengths from 380 nm to 780 nm. After the light signal is picked up by our eyes, it gets prett...
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2012-09-18

LIFX: The Light Bulb Reinvented

LIFX is a WiFi enabled, multi-color, energy efficient LED light bulb that you control with your iPhone or Android. What is LIFX? LIFX is the smartest light bulb you've ever experienced. It's a wifi-enabled, energy efficient, multi-colored bulb that you control with your iPhone or Android. LIFX gives you unprecedented control of your lights, reduces your energy costs, lasts up to 25 years and delivers an amazing range of experiences we think you’ll love. Sets up in Seconds LIFX is incredibly easy to set-up. Simply replace your existing bu...
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2012-09-17

Basic Characteristics of Light Sources

By Scott Watson Light sources such as incandescent lamps, halogens, fluorescents, LEDs and some others have basic characteristics.  They also have their positive and negative aspects.  Actually, there are different kinds of light sources in use all over the world.  None of them has actually proven to be very suitable for all applications.  In this write-up, you’re going to learn more about the positive and negative aspects of the lighting sources. This will help you to get more understanding about LED lighting system.  Let’s have a loo...
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2012-09-11

How to choose light bulbs that aren't terrible

Energy-efficient light bulbs can be far from perfect. CFLs can take minutes to achieve full brightness compared with LEDs that brighten instantly, but in tests, one LED was dim and emitted a ghastly, bluish light color, and others couldn't cast light in all directions. Consumer Reports has identified four light bulb letdowns and ways to prevent them. Dim bulbs: Opt for more lumens. Check the lighting facts label on the packages of CFLs and LEDs for the number of lumens. The higher the lumens, the brighter the bulb. Weird light color: Choose the r...
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2012-09-05

LEDinside: How to choose the right LED bulb in China market when LED replacement age is coming?

In 2011, the National Development and Reform Commission announced that the ban on the sales of 100W and above incandescent bulbs would take effect in October 1, 2012. As the enforcement day is drawing near, LEDinside believes that now it has become the critical stage for the transition from conventional lighting to LED lighting. As the incandescent products are gradually phasing out and supportive policies of the SSL lighting industry are further introduced and implemented, LED lighting is faced up with a faster development than ever before. Over these years, with th...
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2012-09-04

Six Tips about LED Bulbs

1. Incandescents are dead. As manufacturers phase out traditional light bulbs that don't meet new federal standards for efficiency, the first to go are 100-watt bulbs in 2012. The phase-out continues with 75-watt bulbs in 2013 and 60-watt and 40-watt bulbs in 2014. You could substitute halogens or compact fluorescents CFLs, but LEDs will take you straight into the future of lighting. LEDs have been used in flashlights and reading lights for years. 2. Long live LEDs. Well-designed and -manufactured LED bulbs are rated to last 25,000 hours, or at least 22 yea...
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2012-08-23

Various Types Bulb Shapes

By Scott Watson In the electronic world, there are varieties of bulbs in use.  Among the popularly used types include fluorescents tubes, LEDs, incandescent lamps, halogens, HIDs and some others. These bulbs   showcase in a variety of shapes and designs.   A clear understanding of the shapes of the bulbs will go a long way to assisting you in understanding their basic features and modes of operation.  Let’s take a look at the various bulb shapes. Pear Shape This is the most standard type of   bulb shape available in the wor...
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2012-08-22

Brief History of Lighting

The history of lighting  is quite detailed and long. Lighting systems and sources have actually come a long way. If you must understand the practical aspects of LEDs and other lighting sources, it’s necessary you grab some details about their long history.  All the lighting sources and systems in use today didn’t fall from above. Some individuals somewhere invested their time and energy in invention them.   An attempt is made in this write-up to present a brief history   of how the issue of lighting began in our world. The very first pra...
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2012-08-17

Sapphire Wafer Wet vs. Dry Etching

LEDs have a very bright future. According to a market research report published by Strategies Unlimited (SU), the high-brightness (HB) LED market, experienced a 93 percent growth rate between 2009 and 2010. In 2009, the global market for packaged HB LEDs was $5.6 billion. In 2010, it grew to $10.8 billion. SU is predicting that by 2015 the global market will be worth $18.9 billion, representing a compound annual growth rate (CAGR) of 11.8 percent. Despite the positive forecast, there is one element that has the potential to stifle the growth of the LED mar...
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2012-08-15

Lighting Systems – Useful Info

Since the invention of light   by the famous scientist, Edison, several  improvements have been made  in the area of lighting.  Several lighting sources and systems have been invented.  Edison gave the world the very first incandescent bulb after he  made several attempts.  His invention   saw  the world depart from the use of candles and kerosene lamps.  His invention also  awakened the giants in the minds of many other scientists.  Several variations of  incandescent light bulbs  were invented after that...
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2012-08-14

Introduction to the practical aspects of Light

Ever since the world came to be, light has always remained a very vital part of the universe. Without light, darkness will simply rule the world. The power of light cannot be ignored in any sector of life.   The Sunlight and the moonlight have great impact in our world.   The same scenario holds for electric light.  We can’t do without   incandescent bulbs, fluorescent tubes, LEDs, halogens and other light sources.  In this write-up, the practical aspects of electric lighting systems and sources are discussed. By way of simple defi...
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2012-08-03

Practical Characteristics of LEDs

Since their introduction in early 2000s, Light emitting diodes (LEDs) have continued to cause waves in the electric industry.  They are widely known for their uniqueness in generating light in diverse manners.   The LEDs do have practical characteristics.  Getting to know more about that will help you appreciate their function in the electric world.   In this write-up, an attempt is therefore made in discussing the basic practical characteristics of  LEDs. LEDs are current devices LEDs are never voltage devices as some people may t...
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2012-08-03

Practical Thermal Management of LEDs

Temperature has tremendous effects on LEDs. This is very evident from the practical thermal behavior seen in the devices.  In any case, there’s a need to discuss how to manage   the thermal effects in order to make the most out of the LEDs. This is exactly the subject matter of this discourse.  There’s a need  to  look at the analytical method used in calculating the  thermal effects as well the  thermal environment in which the LEDs operate in. we’re also going to  discuss the various methods of keeping the LEDs...
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2012-08-02

Information on practical DC Drive Circuitry for LEDs

All LEDs are  driven electrically before they can emit quality light.  This is one of their basic characteristics which differentiate them from other kinds of light sources.  In this write-up, we’re going to be focusing on the DC drive circuitry for LEDs. In the first place, the battery is a typical DC source. It’s usually used for flashlights. It can as well serve as the output of a converter.  Actually, DC is quite different from AC.  The difference is that DC has much lower voltage than AC.  Hence, the regulations gov...
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2012-08-01

A look at the Practical Thermal Performance of LEDs

LEDs have their basic characteristics.  They are current devices with unique functions.  They also have unique system of operation when they are in use. A look at their practical thermal performance is very vital if you must understand how they operate. This is exactly the major goal of this   write-up. We’re going to be examining the practical thermal performance of LEDs and how it influences their usage in given applications. The Mechanisms behind Thermal Shifts A White LED usually consists of   different components.   I...
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2012-07-30

The Future design for the next generation LEDs

By Scott Watson LEDs have continued to evolve as the years roll by.  Lots of exciting designs have been seen in many of them.  The future promises to be more surprising when it comes to LED designs.  In this write-up, we’re going to be examining the future design possibilities expected of the next generation LEDs. Actually, brighter and cheaper LEDs do come up every few months.  All kinds of modern day designing processes are used in manufacturing them.  So many manufacturers have come into the business.  Today, many of our ligh...
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2012-07-27

Information on Practical AC Drive Circuitry for LEDs

By Scott Watson Apart from using the DC drive circuitry in some conditions, LEDs also make use of the AC Drive Circuitry.  DC circuitry is powered by batteries while the AC is powered by the electrical current.  In this write-up, we’re going to be discussing some details concerning the practical aspects of AC drive circuitry meant for LEDs. Actually, when your LED light is run off the electrical grid, the AC drive circuitry is simply used.  The power conversion of the AC power is known to be very complex than the DC version.  ...
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2012-07-26

Recycling LEDs Becomes a Pressing Issue

What is LED? LED stands for Light-emitting diode, first used in 1968. LED, a semiconductor light source, has been widely adopting for assorted lighting usages and has been slowly replacing incandescent lights over the recent years. Although LED is much more environmental-friendly than traditional lighting fixtures, reusing and recycling LEDs is still a very crucial issue. LED’s Advantages and Applications LED lights have the following edges over incandescent light bulbs: A) LEDs have longer lifespan than that of incandescent light bulbs; the for...
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2012-07-26

A look at the practical System Design with LEDs

By Scott Watson Lighting designs are made up of various components such as LEDs, ballasts, drivers, thermal performance and a lot more.  In most cases, these components have to be integrated to make a complete design.  The LEDs in particular have vital roles to play.  A look at the practical system design with LEDs is therefore very important. A printed circuit board can be made for the LEDs. There’s also the need to design optics in order to get the light from the LEDs to go to the appropriate direction and also have the right characteristi...
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2012-07-24

Useful information on the practical aspects of LEDs

By Scott Watson The word “LED” is a short form for “Light Emitting Diode”.  Simply puts, LEDs are tiny diodes that conduct current only in one direction. There are lots of practical aspects you can learn about LEDs. They are actually wonderful electrical devices that can accomplish a lot when put into use.  You can also learn a lot from their electrical behaviors. LEDs are actually known for having higher voltages than the ordinary diodes found in electronics.  This is mainly because; they are not made of silicon element. T...
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2012-07-24

The Interior aspects of LEDs

By Scott Watson Light emitting diodes (LEDs) have continued to be greatly used in the electronic world.  There’s a lot you need to know about their designs and functions.  They have continued to be used in the manufacturing of gadgets, mobile devices and other tiny and large electronics. To know more about the LEDs there’s a need to unravel their interior components.  This is exactly the major focus of this write-up. Getting to know the inside sections of LEDs can be very educating.  The interior construction of such devises is worth k...
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2012-07-24

Get to know more about Light Bulbs and Lighting Systems

By Scott Watson To understand more about the LEDs lighting designs, there’s a need to dig into the background aspect of light bulbs and lighting systems.  For more than 100 years now, light bulbs have been in use all over the world.    Such bulbs have undergone series of   changes   through the ingenuity of several scientists across the world.  The technology of the light bulbs and lighting systems has always   improved from one level to the other.  Basically, the whole scenario about light bulbs can be unders...
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2012-07-16

Seoul Semiconductor Made the Jump to GaN Substrate, nPola May Rock Sapphire Substrate Industry

In July 2012, Seoul Semiconductor (SSC) announces a new LED product called “nPola,” which takes SSC more than ten years to develop. The product features the non-polar technology that increases brightness levels 5 times over existing LEDs. Currently most mass-produced LEDs’ luminous efficacies are around 100lm, but SSC’s nPola product’s luminous efficacy reaching 500lm, five times higher. Simply put, a 60W equivalent LED light bulb usually requires 10-20 LEDs, but it only needs 1-2 LEDs if adopting nPola product. According t...
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2012-06-29

SR-2818&SR;-1009XX full touch RGBW remote controller

1.Brief introduction SR-2818 RGBW remote controller is full touch remote controller which has 8 different zones. It can get Red/ Green/ Blue/ White color directly. The remote controller can save up to 8 colors or 8 modes into corresponding buttons (1-8 buttons) for each zone. You can choose any color through color wheel. There is a USB port to charge internal battery....
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2012-06-29

Introduction to LEDs’ Basics

By Scott Patterson Light bulbs are seemed everywhere, and there are more than 20 billion light bulbs around the world right now. On an average that for every one person, there would be three light bulbs. In the future, we can expect a replacement of all the current lightbulbs with those of LEDs. The reason for the occurrence of this replacement is due to the fact that LEDs’ efficacy is multiple times higher than those of incandescent light bulbs. LED is possible in reproduce the theoretical limit of the conversion from electricity to light set by physics. LEDinsid...
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2012-03-13

DOE’s solution to America’s Energy Future

By Scott Patterson The U.S. Department of Energy while facing the conundrum of current economy downturn, tries to fortify the nation’s energy security and reduces carbon emissions, the solution that it has came up with is the implementation of solid-state lighting technology. DOE believes this emerging technology will be America’s answer to these three recent challenges. Solid State lighting will bring a greener environment because homes and businesses will be consuming less electricity and thus they will be less dependent of fossil fuels. Solid-state lightin...
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Today Philips Lumileds launches its proprietary CrispWhite Technology, yet another quality of light breakthrough in its portfolio, making whites appear vivid and bright while colors appear saturated. LUXEON CoB arrays with CrispWhite Technolog... READ MORE

For the first time there is a compact laser multi-chip package. Osram Opto Semiconductors can pack up to 20 blue laser chips in the new PLPM4 450 module. Instead of taking the laborious approach and constructing a light source from individual ... READ MORE