LEDforum 2011 Shenzhen (a): LED lighting scale is an opportunity and challenge for LED manufacturers

Before the conference, more than 500 foreign executives from the LED industry in Shenzhen, Marco Polo Hotel Sydney Hall of the exchange name card, communication, warm atmosphere. In the morning 9:30, opening dramexchange chairman, Honorary Professor of the National Tsinghua University and a visiting scholar at the City University Hong Kong Mr. Liu Jionglang, "China international LED market trends and lighting applications forum officially opened.

The use of LED lighting scale is also an opportunity and challenge for LED manufacturers

LEDforum 2011 Shenzhen speakers are senior foreign LED companies. The first stage speaker is PHILPS Lumileds Asia regional marketing director, Mr. Zhou Xuejun, he believes that LED is changing the development prospects of the industry as a whole. At present, LEDs has been used in outdoor lighting applications, shopping malls, hotels, and many other Home Furnishing, with the expansion of LED application and development, more and more lighting application requirements to achieve higher lower flux, more lm/W, LED products can cost more and faster return on investment period, the LED vendors will bring more opportunities and challenges. But in order to truly realize the use of LED lighting scale, LED manufacturers also need to light quality, performance and cost, reliability of three efforts.

He introduced elements of light quality is mainly reflected in the consistency, no significant difference and three color. Consistency requires that the product should be consistent with the quality of the light in the LED links, long-term use, and different environmental temperatures. At the same time, we should keep the color difference and good color rendering. In the LED performance improvement, but also need to use a variety of ways to further reduce product costs. Such as: to improve the LED epitaxial technology to increase the efficiency of light, the use of higher performance to improve the current, etc..

About LED reliability, he explained that the lumen maintenance rate, color stability, etc. are related to the reliability of supply chain. And the reliability of LED is not equal to the reliability of the whole LED system, because the whole LED system includes power supply, link, LEDs, optical design, heat dissipation and packaging technology, etc.. In order to specify in detail, he also cited the example of LUXEON RebEL.

MOCVD is the most critical step in the production of high brightness LED, yield and cost

Viiko (Veeco) Dr. MOCVD marketing director Li Jia believes that the current high brightness LED is in the early growth period is significant, regardless of LED TV or LED lighting, are shown. MOCVD is the most critical step in the production of LED brightness, yield and cost, at present, the new MOCVD technology is being introduced, will help improve capital efficiency, reduce the cost of ownership.

Li Jia introduced, can be predicted according to the VEECO 4Q10 LED TV statistics, penetration rate in 2011 is expected to reach 50%, to 2013 will rapidly increase to 80%. In LED lighting, LED lighting chip demand in the next five years compound annual growth rate is estimated at 68%, and residential outdoor lighting will be respectively accounted for 23% and 40%, leading the industry demand for LED chip, followed by commercial and industrial lighting. At present, LED lighting applications just make first appearance.

MOCVD is a key determinant of the performance and cost of LED, because MOCVD is the key technology for manufacturing LED, LED color, brightness, electrical characteristics and cost depends on MOCVD. And the current purchase of MOCVD equipment accounted for more than 50% of LED plant capital expenditures. Therefore, to reduce the cost of LED manufacturing, we must adopt MOCVD advanced technology, such as: TurboDisc MOCVD technology, etc.. The technology has the advantages of uniform wavelength, clean nozzle, high GaN growth rate, convenient conversion to large size wafer and so on. In the design of high brightness LED manufacturing system, he introduced, reduce the cost of ownership of MOCVD, you can achieve increased production, reduce carbon footprint and improve capital efficiency and yield.

Increasing wafer size and increasing MOCVD epitaxial wafer yield

Ace (Aixtron) Rainer Beccard, vice president of marketing for MOCVD introduces several machine development of solid-state lighting requirements, including higher yield, more and more high growth rate, wafer automation, process integration and topology.

Rainer Dr. Beccard first introduced the Haitz Law: from the first commercial in 1965 LED began to count, over the past 30 years, the brightness of LED about every 18 to 24 months can be doubled, so in 2003 to 2013 to estimate the brightness will grow 20 times, but the price will be only now in the 1/10. He introduced the white light from this Law LED costs, packaging LED manufacturing costs will decline, and to achieve this cost reduction, it requires MOCVD to reduce the cost of ownership, improve the output of epitaxial wafers.

Before, traditional LED manufacturers to increase the reaction furnace to increase production, such as the production of 2 inch wafer 19 furnace change into 55 furnace, but the cost will increase accordingly. With the development of technology, the wafer size from 2 inches to 6 inches, the yield increased by 30%, but no additional cost, increasing the wafer sizes increase the yield of MOCVD, has become the most wafer manufacturers preferred.

In addition, he also introduced three other trend in the development of MOCVD technology, integrated automation, in technology and situ topology. MOCVD automation technology can reduce the non growth time of GaN, improve yield and reproducibility. MOCVD process integration technology can not only improve efficiency and productivity, but also reduce operating costs, such as: Manufacturing Execution System (MES) management and analysis of data and control equipment, etc..