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    • Discussion: chip link how to reduce the cost?
    • Home >> News
    Discussion: chip link how to reduce the cost?
    2013-7-9
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    Because the TV back light growth has been slowing, and cost issues and consumer awareness problem large lighting market is fully open, LED industry is facing the most difficult time. On November 8-10, CHINA SSL2011 held in guangzhou, representatives from several countries and regions of the world deeply discussed in such a situation, the government, industry, enterprise should be how to think how to face, passing out of the many positive signal at the meeting, for the industry a shot in the arm. And "reduce cost" is also one of the key words of the meeting, representatives of the different aspects from the industrial chain each link of the production process improvement and application of new technology and module of the whole industry chain and so on has carried on the thorough discussion.

    For now, if you want to "winter", the breakthrough in the market, how to really reduce the cost, how to realize the lumen increase every dollar is the most important. Conference, philips, GE, osram and other international large companies are put forward to reduce 10 times 10 years later, in fujian province all photoelectric technology co., LTD launched 8 w 810 lumens, the whole lamp retail price is 39.8 yuan LED bulbs, also become a hot industry discussion, this in a way to stimulate the industry has been beset by high cost. At the current lighting market development analysis, LED cheaper prices in recent years to replace traditional light source possibility is not high, mainly because of purchase costs are still too high. GE think drive personal consumption price is about $10, but there are still some distance away. Chips in all kinds of factors, to reduce costs is by far the most important, although the price of chips this year as the luminous efficiency of ascension and expansion of production capacity has 30% - 40% of the decline, but there is still considerable space requires hard work.

    To improve photosynthetic efficiency and development to the big size

    Accounted for the largest chip in LED lighting, and it's technical monopoly. Both in photosynthetic efficiency of ascension, and large-scale development can significantly reduce costs, improve the price of LED lighting products. Philips lighting company chief executive Michael Holt said at the conference closing ceremony in 2020, philips product performance 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 achieve our goals."

    In order to improve the production efficiency, more and more LED chip factory speed up into 4 inch and 6 inch chip production capacity expansion. South Korea's samsung has mainly use 4 inches in 2010, the machine production of LED, PhilipsLumileds in 2010 announced the formal production at the end of 6 inch LED chips. And Taiwan chip, and auo's giant ronda, are claimed in 2011 further expansion of 4 inch chip production technology. At the meeting, Mr Ace strong research and development vice President Michael Heuken said when accepting a reporter to ask questions, "large size substrate is a developing trend, and 4", 6 ", 8 "substrate is an inevitable trend. Ace is stronger than November 8 launch of the new MOCVD equipment - 19 x4 inches specifications of the new CRIUS ® II - XL reactor, can choose to use any size between 2 inches to 8 inches of wafer, hardware simply replace graphite plate, don't need other hardware or process adjustments."

    In addition, many companies think array way, and avoid sorting can be to a certain extent reduce the chip cost. And mature because of low power chip heat dissipation problem easy to solve and low prices, and into the choice of many enterprises to reduce the product cost at present.

    High voltage LED will become the mainstream in the future

    From the first half of 2010, Cree, Nichia and Lumileds are announced to develop HV (high voltage) LED chips, in October, wafer photoelectric launched 1 W blue, 50 v, 20 ma, chip and high brightness red 0.7 W, 35 v, 20 ma chips. HV LED chips encapsulation of low cost, high warm Bai Guangxiao, drive power supply with high efficiency, low line loss of the advantage. In the meeting, most experts agree that HV LED will become the mainstream in the future. In addition to the wafer can control high voltage LED chip technology and mass production, domestic crystal electric, di source, jinko etc also developed the high pressure on the original chip structure chip, and implement mass production. According to di source photoelectric aspects, its independent development HVLED production of photosynthetic efficiency is 115 lm/W, theory of photosynthetic efficiency value is 130 lm/W, and can improve the luminous efficiency of about 10%, 1000 hours continuous lighting light output power attenuation are all less than 2%.

    Introduces the HVLED progress wafer photoelectric, before they are used a lot of small chips together to meet the needs of high voltage condition, but now they developed a new flip chip technology, use a chip can meet high voltage, than with a small chip is arranged together to lower cost, can help customers reduce the cost to a great extent.

    Expand production capacity to achieve economies of scale

    Ways, from the enterprise to reduce the cost of chip, an important trend that is based on the value chain integration and enterprise capacity expansion to large-scale development as a whole. "This year, the overcapacity problem, implemented objectively make the cost down!" Philips lighting company chief executive Michael Holt said. Chip prices also have experts predict that the future will continue to fall, but you don't like this year appear substantially more than 50% of the decline, even individual believe that with the upstream technology, its cost will be improved through technology to obtain a larger decline in space.

    And the market and product application of Cree, senior director Mike Watson has another opinion, and there's nothing in the closing meeting CHINASSL2011 he thought only about 10 times of cost reduction and the improvement of photosynthetic efficiency is wrong, these problems should be focused from photosynthetic efficiency to big family acceptance question, to consider the business issues. Solid-state lighting actually touches a lot of industry, we should pay attention to focus on business model differentiation rather than technology or luminous efficacy of differentiation, told us, we need to get the value of the end user, and then come up with a model, has used we have returns, with the proceeds to promote the development of technology, in turn, will drive the competition, the competition will bring further cost reduction, such ability can prevail, this pattern can achieve 10 times the cost reduced.

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