How to reduce the cost of LED chip link

Due to the growth of TV backlight has slowed down, and the cost of the problem as well as consumer awareness of the huge lighting market is still fully open, the LED industry is facing the most difficult moment. CHINA SSL as the first major event in the global semiconductor lighting industry, experts gathered almost all of the global semiconductor lighting industry giant and top, has become an important platform for international semiconductor lighting technology information exchange products. On November 8-10 CHINA SSL2011 held in Guangzhou, representatives from many countries and regions of the world in the three days together to discuss how to think about how to face such a situation in the government, industry and enterprises, will transfer a lot of positive signal, has injected a shot in the arm for the industry. And the "lower of cost" is the general assembly, application of new technology to improve the production process, from all sectors of the industry chain of the representatives of the different aspects of the whole industry chain, and the modular are discussed.

At present, in order to "winter", break through in the market, how to reduce costs, how to achieve an increase in the lumen per dollar is the most important. At the meeting, PHILPS, GE, OSRAM and other international big companies have put forward the target to reduce 10 times in 10 years, Fujian Wanban Optoelectronics Technology Co. Ltd launched 8W 810 lumens, the whole lamp retail price reached 39.8 yuan LED lighting, has also become a hot topic of discussion in the industry, this industry has been stimulated in a way is the high cost of troubled nerve. In the current analysis of the development of the lighting market, LED in recent years to replace the traditional low-cost light source is not likely to be high, mainly because the purchase cost is still too high. GE believes that the price of individual consumption is about $10, and there is still a distance. In a variety of factors to reduce the cost of the chip, is clearly the most important, although in chip prices this year with the luminous efficiency and capacity expansion of existing 30%-40% decline, but there is still considerable room to.

Improve light efficiency and develop to large size

Chip in the LED lighting in the largest proportion, but also the technical monopoly. Whether it is to improve the efficiency of light, or large-scale development can be greatly reduced costs, effectively improve the cost of LED lighting products. The chief executive officer of Philips Lighting Company MichaEL Holt in the closing ceremony of the conference on 2020 that performance of PHILPS products will reach 200 lumens per watt, he also said "the bigger chip can achieve higher efficiency, but we now have no way to solve the problem of high current, if can maintain high current efficiency, we can to achieve our goal. "

In order to improve production efficiency, more and more LED chip factory to accelerate the expansion of 4 inches, or even a 6 inch chip capacity expansion. South Korea's Samsung was in 2010 with a 4 inch machine production LED, PhilipsLumileds is more than the end of 2010 announced the formal production of 6 inch LED chip. Taiwan crystal electric, and AUO's giant Ronda, are also claimed in 2011 to further expand the 4 inch chip production technology. At the meeting, Ace vice president of strong R & D Michael Mr. Heuken in an interview with reporters, said, large-size substrate is a trend of development, and 4 inch, 6 inch, 8 inch substrate is an inevitable trend. The new CRIUS model MOCVD - 19x4 inch size equipment Ace launched in November 8th? II-XL reactor, can choose to use 2 inches to 8 inches between any size of the wafer, the hardware only need to replace the graphite disc is simple, do not need other hardware or process adjustment. "

In addition, many companies believe that the way the array, as well as sorting can be reduced to some extent, the cost of the chip. The mature small power chips due to the problem of heat dissipation easy to solve and low prices, but also to reduce the cost of choice for many companies.

High voltage LED will become the mainstream of the future

From the first half of 2010, Cree, Nichia and Lumileds have announced the development of HV LED (high voltage) chip, in October of the same year, EPISTAR launched the blue 1W, 50V, 20mA chip and high brightness red 0.7W, 35V, 20mA chip. HV LED chip has the advantages of low cost, high efficiency, high efficiency, low power consumption and high efficiency. At the meeting, most experts believe that HV LED will become the mainstream of the future. In addition to master the pressure wafer LED chip technology and mass production, domestic crystal electric source, crystal, etc., Di is the original chip structure developed high voltage chip, and achieved mass production. According to introduction Di source photoelectric, its self-developed HVLED production efficiency is 115 lm/W, the theoretical value of luminous efficiency is 130 lm/W, and the luminous efficiency can be increased by about 10%, 1000 hours of continuous light output power attenuation is less than 2%.

EPISTAR introduces the progress of the HVLED in CHINASSL2011H, before they are used in many small chip combined to meet the high voltage under the condition of demand, but now they developed new flip chip technology, a chip can meet the high voltage lower than with a small chip arrangement with cost. Can help customers reduce the cost to a great extent.

Expand production capacity to achieve economies of scale

From the business side, in order to reduce the cost of the chip, an important trend is based on the integration of the value chain and the expansion of production capacity to the overall development of large-scale. This year, the problem of excess capacity, the realization of the objective to reduce costs! Philips Lighting Company CEO Michael Holt said. Some experts predict that the future chip prices will continue to decline, but not like this