With more than ten years of focus on LED epitaxial and chip technology, New Century Optoelectronics has innovated in the field of flip chip packaging, and developed new products such as MATCHLED and EuteticBonding technology, which greatly enhance the reliability of LED lamps and meet the outdoor lighting. The harsh use environment, while saving customers the cost and manpower of lighting and after-sales service, create a win-win situation.
Adhering to the way of thinking, finding ways, and doing tissue DNA, New Century Optoelectronics has provided high-power (FlipChip) packaging technology in addition to providing chips to meet the low- and medium-order power LED market. Outdoor lighting blue ocean market. DIGITIMES interviewed Xu Chengyu (hereinafter referred to as Xu), the associate of the New Century Optoelectronics Component and New Products Division, and Yang Shiyi (referred to as Yang), the project director of the Product and Marketing Department, to understand the technology and principles of the company's new products, and the new century. How does Optoelectronics start from the market perspective of customer needs!
LED Chinese Circle Light Cladding Technology New Century Q: Please briefly describe the current status and main force of your company's products.
Yang: The revenue of the new century optoelectronics is about 35 from Japan, the highest among the Taiwanese factories, and about 45 is from the mainland. In particular, in the 12th Five-Year Plan (2011~2015), there is a special chapter for the construction of an integrated transportation system. In addition to the keynotes of resource conservation and environmental protection, it can be expected that a considerable proportion of traffic construction will be newly established or redeveloped. With the low-carbon row of LED street lights and tunnel lights, the outdoor lighting market based on transportation is extremely large.
However, if LED light source is used, it has a more stringent reliability test for the lamp bead, which is the niche of the FlipChip component. New Century Optoelectronics is the leading manufacturer of flip chip technology and mass production in the Chinese circle. Outdoor lighting source is one of the main shipments.
Outdoor lighting, the first quality of the crystal chip is packaged into the mainstream Q: outdoor lighting products and market demand?
Xu: In fact, when the LED light is energized, it will always be bright, only the problem of attenuation. LED outdoor lighting needs to face various harsh environments such as high and low temperature impact, high wattage or high current operation. It is common to use a constant current to make multiple LED modules in series, as long as one is not bright, the whole string is not bright, resulting in Uneven power loading, reducing lamp life and even causing systemic dead lights.
In the market of Energy Management Contract (EMC), the general warranty is 5 years. During the period, as long as the lamps are damaged, it is necessary to dispatch large-scale machines for repair. Therefore, the cost of subsequent repairs is likely to drag down the entire EMC case, so reliability is an important factor that cannot be compromised. Factors, so that the design of LED components is simplified and gradually paid attention to by the market. Our flip-chip products are going in this direction.
Q: Please briefly describe your company's flip-chip LED products?
Xu: New Century Optoelectronics' MATCHLED is a Flipchipinside package, which is packaged on a ceramic substrate (Ceramic Substrate) by Eutectic Bonding. The MA3 series (MATCHLED of 3535 specification) can be used to produce a single piece. With a luminous efficiency of 140lm/W, it has four features of free line, dense arrangement, low thermal resistance and high luminous efficiency, which is suitable for outdoor lighting market.
Q: The principle and technology of flip chip products?
Xu: The general flip chip packaging process includes steps such as brushing, patching, reflow, and reflow to ensure 70 coverage. In the new century, the flip-chip package adopts DirectBonding eutectic process (EuteticBonding) technology. The chip and the substrate use a gold-tin eutectic layer which is ten times higher than the thermal conductivity of the silver paste, plus ultrasonic surge voltage. The technology can uniformly and firmly bond, greatly reducing and reducing the generation of bubbles, and the bonding coverage between the chip and the substrate is 80 or more. Therefore, when operating at high current and high wattage, it still has the advantages of high quality and high reliability.
Q: What are the advantages compared to competitors?
Xu: Our MA3 (MATCHLED of 3535 specification) has the characteristics of free wire bonding, dense alignment, low thermal resistance, high luminous efficiency, etc. It also comes from the integration advantages of the new century photoelectric from epitaxial, chip and flip chip packaging. In the test of LM-80 with MA3-3, our life is comparable to that of the international first-class manufacturers. In the light decay test, the MA3-3 of New Century Optoelectronics is tested at 0.7 amps twice the normal operating current and in the high temperature environment of 105C. After 6,000 hours, MA3 is much higher than the outdoor lighting standard of EnergyStar (94.1). Therefore, the products and quality of New Century Optoelectronics have already reached the level of international first-class manufacturers.
High cost performance and customer to create a win-win situation Q: Customers choose the advantages of the new century?
Yang: Our chip flip technology components have matured and are now mass-produced and shipped. It is the only Taiwanese factory that can be driven by 0.7 amps and used by street lamp factories. In terms of cost performance, in the same light effect products and high wattage street lamps, the lamp beads accounted for 30% of the total cost. In the new century photoelectric photoelectric MATCHLED, we cost 20 less than competitors, which can reduce the total cost of lamps to 94. For the contract energy management model, the recovery time can be effectively shortened. It can be said that the advantages of New Century Optoelectronics lies in providing LED outdoor lighting solutions with high quality, low cost and fast recycling.
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