Menu
Three Japanese win physics Nobel for invention of blue LED

Three Japanese win physics Nobel for invention of blue LED

The long-sought blue diode allowed the creation of white-light LEDs

Three Japanese who succeeded in inventing efficient blue light-emitting diodes (LEDs) where many companies had failed have won the Nobel Prize in Physics.

The Royal Swedish Academy of Sciences on Tuesday announced the award to Isamu Akasaki of Meijo University and Nagoya University, Hiroshi Amano, also of Nagoya University, and Shuji Nakamura of the University of California, Santa Barbara (UCSB).

The three were recognized for their work in the 1990s that enabled the creation of white light using LEDs. While red and green diodes had previously been developed, researchers were unable to develop a blue LED for 30 years. Combining blue with red and green diodes yields white light.

"With the advent of LED lamps we now have more long-lasting and more efficient alternatives to older light sources," the academy said in a release. "Incandescent light bulbs lit the 20th century; the 21st century will be lit by LED lamps."

LED lamps are capable of generating just over 300 lumens per watt (lm/W), compared to 16 lm/W for regular bulbs and nearly 70 lm/W for fluorescent lamps, it added. LEDs can last as long as 100,000 hours. Incandescent light bulbs are typically manufactured with a design life of 1,000 hours, and fluorescents 10,000 hours. Unlike the latter, white LEDs do not contain mercury.

The researchers built their own equipment and engaged in thousands of experiments, focusing on gallium nitride as a material. The work later led to the development of lasers using the blue LED, as well as Blu-ray discs.

"It is very satisfying to see that my dream of LED lighting has become a reality," Nakamura said in a UCSB release. "I hope that energy-efficient LED light bulbs will help reduce energy use and lower the cost of lighting worldwide."

Ten years ago, the Tokyo District Court ordered Nakamura's former employer, LED maker Nichia, to pay him ¥20 billion in compensation (US$180 million) for the invention. He had previously received only ¥20,000 as a bonus. In 2005, Nakamura settled with Nichia, which had appealed, for ¥840 million.

Follow Us

Join the New Zealand Reseller News newsletter!

Error: Please check your email address.

Tags popular scienceNagoya UniversitySanta BarbaraUniversity of CaliforniaComponentsMeijo University

Featured

Slideshows

Educating from the epicentre - Why distributors are the pulse checkers of the channel

Educating from the epicentre - Why distributors are the pulse checkers of the channel

​As the channel changes and industry voices deepen, the need for clarity and insight heightens. Market misconceptions talk of an “under pressure” distribution space, with competitors in that fateful “race for relevance” across New Zealand. Amidst the cliched assumptions however, distribution is once again showing its strength, as a force to be listened to, rather than questioned. Traditionally, the role was born out of a need for vendors and resellers to find one another, acting as a bridge between the testing lab and the marketplace. Yet despite new technologies and business approaches shaking the channel to its very core, distributors remain tied to the epicentre - providing the voice of reason amidst a seismic industry shift. In looking across both sides of the vendor and partner fences, the middle concept of the three-tier chain remains centrally placed to understand the metrics of two differing worlds, as the continual pulse checkers of the local channel. This exclusive Reseller News Roundtable, in association with Dicker Data and rhipe, examined the pivotal role of distribution in understanding the health of the channel, educating from the epicentre as the market transforms at a rapid rate.

Educating from the epicentre - Why distributors are the pulse checkers of the channel
Kiwi channel reunites as After Hours kicks off 2017

Kiwi channel reunites as After Hours kicks off 2017

After Hours made a welcome return to the channel social calendar last night, with a bumper crowd of distributors, vendors and resellers descending on The Jefferson in Auckland to kickstart 2017. Photos by Maria Stefina.

Kiwi channel reunites as After Hours kicks off 2017
Arrow exclusively introduces Tenable Network Security to A/NZ channel

Arrow exclusively introduces Tenable Network Security to A/NZ channel

Arrow Electronics introduced Tenable Network Security to local resellers in Sydney last week, officially launching the distributor's latest security partnership across Australia and New Zealand. Representing the first direct distribution agreement locally for Tenable specifically, the deal sees Arrow deliver security solutions directly to mid-market and enterprise channel partners on both sides of the Tasman.

Arrow exclusively introduces Tenable Network Security to A/NZ channel
Show Comments