2008 LED manufacturing technology: interest rate increase

In November 22, 2007, driven by mobile phone sales, the number of LED components is growing at an alarming rate (CAGR of over 45%). Due to the huge price pressure, LED component revenue growth is sluggish, in the past two years, an increase of only 8%.

"Obviously, LED needs to expand new market application Yang high profits. In addition to LCD backlight applications, we believe that this growth will come from 3 areas of application: automotive lighting, building lighting and general lighting. "Yole D vELoppement company responsible for compound semiconductor field senior analyst Philippe Roussel said. In order to obtain the profits of these applications, the performance of LED (especially $/lumen and Lumens/Watt at full power) needs to be significantly improved. The application of new manufacturing technologies at all levels of material, design, front end, back end, and packaging can benefit from the potential of the ultra bright LED.

Super bright LED market power and higher efficiency can bring higher profits

Tom Pearsall pointed out that the recent report of the LED manufacturers showed that the optical efficiency (lm/W) parameters have been significantly improved, but only in low current, low power products. "

At the same time, the difficulties of high power and high efficiency are also highlighted. Now, the high power LED (> 1 Watt) light effect is not higher than 70lm/W, that is, the performance of LED is still lagging behind the general lighting fluorescent lamp.

At present, the power consumption of high power LED, the average 75% into heat, only 25% into light. Some parameters have to be improved, such as internal quantum efficiency, power loss, emission rate, fluorescence transfer and optical quality.

The report pointed out that the LED can significantly improve the 10 key preparation technology of optical output power (or being used in observation): a new substrate technology, laser stripping, temporary bonding, transparent top contact, separation, surface roughening, fluorescent powder composition and deposition. The need to sell general lighting LED need a new business model.