Crystal electric high power blue LED 2008 mass production scale

In the LED outdoor billboards, traffic lights and LCD backlight applications continue to expand, high power LED demand is rising, in 2007, Taiwan is the only crystal electric blue crystal brightness up to 1700mcd output small manufacturers, it is pointed out that the technology to enhance the yield and improve, 110 lm/W blue light LED in 2008 from the research laboratory officially entered the production stage, in accordance with the downstream packaging plant technology is different, the brightness will reach between 1800mcd~2000mcd, can be used in high order NB backlight or outdoor advertising applications.

High power LED package by the complex process and material consumption is large, the high power LED single high cost, but when the luminous efficiency of high power LED continues to improve, the industry can provide the purchase cost of each LED lumens decreased, and decreased LED the number of pieces of usage, according to industry research and development planning, the current white LED 20mA more than 175 lm/W in 2015 to about 2020 will reach 200 lm/W.

The Japanese LED maker Nichia in December 2006 published the white LED luminous efficiency, small size of the LED crystal 14mil, current 20mA has reached 150lm/W, and the crystal electric in July 2007 reached 110 lm/W, but the yield and the manufacturer authentication problem, has not yet officially entered the production stage, but it is pointed out that the crystal electric in 2008 has been successfully promoted yield, brightness level in the package will be reached 1800mcd~2000mcd.

Because of the high order NB backlight brightness high requirements in specifications, in order to achieve high quality, high contrast and high brightness, LED grain brightness must be above 1800mcd, Taiwan is the only original crystal electric blue crystal brightness up to 1700mcd production industry, Taiwan other upstream grain factory ahead in technology, in the crystal electric officially entered the brightness more than 1800mcd of the production stage, will strive for high margin high brightness LED grain market.

In large size grain 1mm, Blu ray LED 350mA current, in lighting applications off the lead, in July 2007 the crystal electric luminous efficiency of 75 lm/W, due to technical research and development in the past focus more on small size LED, so compared to the Lumileds reached 115 lm/W level there is still a distance, EPISTAR said 2008 will work towards the development of large size technology, is expected in 2008 will reach 85 lm/W luminous efficiency.

Source: Digitimes- Optoelectronics