How to reduce the cost of LED chip

As the growth of TV backlights has slowed down, and the lighting market with huge cost and consumer awareness issues is still fully open, the LED industry is facing the most difficult moment. As the world's largest event in the field of semiconductor lighting, CHINA SSL has gathered almost all the semiconductor lighting industry giants and top experts in the world, and has become an important platform for the exchange of technical information products in the international semiconductor lighting field. On November 8-10, CHINA SSL2011 was held in Guangzhou. Representatives from many countries and regions in the world gathered together in these three days to discuss in depth how the government, industry and enterprises should think about how to face this situation. Yes, there were a lot of positive signals at the meeting, which injected a shot in the industry. The “cost reduction” is also one of the key words of the conference. Representatives from different aspects have carried out in-depth discussions on the improvement of production processes in various stages of the industry chain, the application of new technologies, and the modularization of the entire industry chain.

At present, if you want to "winter", break through in the market, how to really reduce costs, how to achieve the increase in lumens per dollar is the most important. At the meeting, major international companies such as Philips, GE, and Osram proposed a goal of 10 times lower in 10 years. Fujian Wanbang Optoelectronics Technology Co., Ltd. launched 8W 810 lumens, and the LED bulb with a retail price of 39.8 yuan has become The hot spot of industry discussion, in a certain sense, stimulates the nerves that the industry has been plagued by high costs. Based on the current development of the lighting market, it is unlikely that LEDs will replace traditional light sources with low prices in recent years, mainly because the purchase cost is still too high. GE believes that the price driving personal consumption is about $10, and there is still a distance. Among the various factors that reduce costs, the chip is obviously the most important. Although the price of the chip has dropped by 30%-40% this year with the improvement of luminous efficiency and the expansion of production capacity, there is still considerable space requirement. Work hard.

Improve light efficiency and grow to large size

The chip accounts for the largest proportion of LED lighting and is a technological monopoly. Whether it is the improvement of light efficiency or the development of scale, the cost can be greatly reduced, and the cost performance of LED lighting products can be effectively improved. Philips Lighting CEO Michael Holt said at the closing ceremony that Philips' performance will reach 200 lumens per watt in 2020. He also said that "a larger chip can achieve higher efficiency, but we can't solve high current now." The problem, if we can maintain high current and high efficiency, we can achieve our goal."

In order to improve production efficiency, more and more LED chip factories are accelerating the expansion of 4 吋 or even 6 吋 chip capacity. South Korea's Samsung has used a 4-inch machine to mass-produce LEDs in 2010. Philips Lumileds announced the official production of 6-inch LED chips at the end of 2010. Taiwan's Jingdian, as well as AUO's big manufacturer Ronda, also announced that it will further expand its 4 吋 chip capacity technology in 2011. At the meeting, Mr. Michael Heuken, vice president of research and development at Ai Siqiang, said in a reporter's question, “The large-size substrate is a development trend, and the 4-inch, 6-inch and 8-inch substrates are an inevitable trend. Ai Siqiang The new MOCVD equipment introduced on November 8th – the new CRIUS® II-XL reactor of 19x4 inch size, can choose any size between 2 inches and 8 inches, and the graphite can be replaced simply by hardware. No additional hardware or process adjustments are required."

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