TV backlight growth has slowed down, and cost issues, as well as a huge consumer awareness of the lighting market is still completely open, the high power led industry is facing the most difficult time. CHINA SSL as the global semiconductor lighting the first major event, bringing together the global semiconductor lighting industry giants and top experts, has become an important platform for exchange of technical information products in the field of international semiconductor lighting. November 8-10, 2009, CHINA SSL2011 was held in Guangzhou, representatives from countries and regions in the world come together in three days, in-depth discussion in such a situation, government, industry, enterprises should think about how face meeting to pass out a lot of positive signals and inject a shot in the arm for the industry. And "cost reduction" is one of the key words of the conference, representatives of the different aspects of the industry chain, production process improvements, application of new technologies, as well as the whole industry chain modularization both in-depth discussions.
Present, in order to "winter" break out in the market, how to reduce costs, how to increase per dollar lumens is the most important. The conference, Philips, GE, Osram, Long and other large international companies after 10 years to 10-fold lower target the Fujian IMC Optoelectronics Technology Co., Ltd. launched 8W 810 lumen, the entire light retail price of 39.8 yuan LED bulbs has also become a hot debate of the industry, which in some sense to stimulate the industry has been cost-troubled nerves. Current lighting market, LED 400W in recent years to replace cheap light source is not likely, mainly because the purchase cost is still too high. GE believes that the drive for personal consumption price of around $ 10, while there are still some distance. Reduce the cost of a variety of factors, the chip is obviously the most important chip prices this year, with the enhancement of luminescence efficiency and the expansion of production capacity by 30% -40% decline, but there is still considerable space needs efforts.
To improve the light efficiency and large-size development
The proportion of chips in the LED 200W lighting, and technological monopoly links. Enhancement of luminous efficiency, large-scale development can make the costs are greatly reduced, effectively increasing the cost of LED lighting products. Michael Holt, CEO of Philips Lighting Company, the performance of Philips products in 2020 will reach 200 lumens per watt, he said "The bigger the chip can achieve greater efficiency, but we do not have the closing ceremony of the General Assembly solution to the problem of high current, if they can maintain a high current and high efficiency, then we can achieve our goals. "
In order to improve production efficiency, more and more LED chip factory to accelerate into 4-inch and even 6-inch chip production capacity expansion. South Korea's Samsung in 2010 is mainly used 4-inch machine the amount of production LEDs, Philips Lumileds announced the mass production of 6-inch LED strip lights chip but also at the end of 2010. Epistar in Taiwan, AUO's manufacturers Lunda, also claimed in 2011 to further expand the 4-inch chip-chip production technology. This meeting, love to think strong R & D vice president Michael Heuken said in an interview with a reporter's question, "large-size substrate film is a development trend, while the 4-inch, 6 inch, 8-inch substrate is an inevitable trend. Love thinking stronger on November 8 launched a new MOCVD equipment - new specifications the CRIUS 19x4-inch? II-XL reactor, you can choose to use the wafers of any size from 2 inches to 8 inches, simply replace the graphite plate hardware does not require additional hardware or process adjustment. "
In addition, many companies believe that the way of the array, and free way of sorting can be reduced to some extent, the chip cost. Mature low-power chips due to the heat dissipation problem easy to solve and low prices, but also into many enterprises to reduce the cost of the product of choice.
High-Voltage LED Blue 150W will become the future mainstream
From the first half of 2010, Cree, Nichia and Lumileds announced the development of the HV (high pressure) LED chips in October of the same year, Epistar introduced blue 1W, 50V, 20mA chip and high-brightness red 0.7W, 35V, 20mA chip . HV LED chips package and low cost, efficient warm white, high drive power efficiency, low line loss advantage. At the meeting, most experts believe that the HV LED will become the future mainstream. In addition to the wafer can master the high-voltage LED chip technology and mass production, domestic Epistar Di source, crystal Branch is also the original chip architecture to develop a high-voltage chip, and mass production. According to Di source photoelectric aspects of its self-developed HVLED production luminous efficiency of 115 lm / W, the theoretical luminous efficiency value of 130 lm / W luminous efficiency is increased by about 10%, continued to light up 1000 hours Output power attenuation were less than 2%.
Epistar CHINASSL2011H on its HVLED progress, before they are combined with many small chip to meet the demand under the high voltage, but now they have developed a new flip chip technology with a chip to meet the high-voltage lower than the cost together with a small chip arrangement can help customers reduce costs to a large extent.
To expand production capacity to achieve economies of scale
Enterprises, in order to reduce the cost of the chip, an important trend is based on value chain integration and enterprise to expand production capacity overall to the large-scale development. "Overcapacity problems this year, to achieve the last objective to reduce the cost of the Michael Holt, CEO of Philips Lighting. Some experts predict that chip prices will decline substantially even individual over 50% of the decline, but not like this year, I believe that with the entire upstream technology continues to improve its cost or the technical improvements to obtain a relatively large decline in space.
Cree's market and product applications Mike Watson, senior director of this there is another turn of opinion, CHINASSL2011 at the closing session, he would be wrong to talk about 10-fold cost reduction as well as to improve the luminous efficiency of these issues, should shift the focus from luminous efficiency turned to accept the question of degree, to consider the commercial aspects. Solid-state lighting is actually touched a lot of industry, and our attention to focus on a differentiated business model, not a technical or luminous efficiency of differentiation, we want the value to tell us the end user, and then come up with the model used, with the adoption of our income, have income in order to promote technology development in turn will drive competition, and competition will lead to further cost reduction, so that it can win such a model can achieve 10 times the cost reduction.