China LED silicon substrate technology breakthrough

In the LED industry, China's own innovative silicon substrate LED technology known as following the addition of silicon carbide (SiC) LED technology, LED sapphire substrate technology third technical route, which broke the Japanese and European manufacturers formed LED strong patent barriers, have complete independent intellectual property rights, the freedom to go abroad.

Difficult! This is the art will understand LED LED material on the growth of a first silicon substrate reaction. Difficulties children? Before 2004, 30 years of research does not address the silicon substrate and the GaN lattice mismatch and thermal mismatch problem, people can not get quality GaN light-emitting film.

Good! LED technology is a silicon substrate LED industry for decades route coveted technology roadmap. Fortunately Where? If we can break through the silicon substrate LED technology problems, to achieve mass production of large size, can significantly reduce the cost and accelerate the arrival of the era of LED lighting!

Silicon substrate LED LED industry technology roadmap is the dream of the technical route, but due to technical difficulties, so most remain in the water phase of the test laboratory. Arduous to activate the mountains - until 2004, in a humble laboratory Nanchang University, the silicon substrate LED blue chip pioneered breakthrough silicon substrate LED technology to achieve a disruptive breakthrough in epoch-making milestone in the history of the world LED.

Now, over the past ten years, LED technology unless the silicon substrate exists only in the laboratory of history. In the effort to support GSR Ventures and a number of venture capital, the already developed into optical crystal, crystal and energy-efficient lighting in the 10's the whole industry chain of industrial clusters, industrial chain sales reached 1 billion in 2013 RMB 2014 is expected to reach 2.5 billion yuan.

Technology features, market segment leader decided

Silicon substrate LED chip is a vertical structure, the current spread evenly, large unit area can carry current densities, combined with the cooling effect of the silicon substrate is much better than the sapphire substrate, reliability, suitable for the manufacture of high-power LED products can be widely applied At the high reliability requirements of lights, tunnel lights, spot lights and other outdoor lighting.

Its chip is a single electrode, the chip size can be very small, because a few dozen electrode line, with high reliability obvious advantages in digital products, high-density areas such as indoor display, many German brand car dashboards are LED chips are made using silicon substrate backlight.

Silicon substrate LED chip is flip-chip peel, single light, so the product has an easy to control light direction features in car headlights, searchlights, bike lights and other fields has obvious advantages.

Its one-sided glowing light characteristics determine its uniform, good quality, and thus require high quality light products, such as high-end mobile phone flash, monitoring facilities, fill light for galleries, jewelry stores, vegetable shops and other places spotlights, etc., with a silicon substrate LED chip is the best choice.

In these areas, the market capacity of at least $ 20 billion a year, and the gradual growth of the silicon substrate LED products in these market segments have a strong competitive advantage.

Patent protection, future patent litigation against international giants "amulet"

If the subject of his country's Blu-ray DVD lessons did not alert us, then repeat the PV of Shame should make us sobering. Foreign LED manufacturers Fangshuiyangyu effort has reached a pinnacle, with the growing size of the domestic LED, LED want to avoid patent siege foreign giants, with existing technology, talent and team probably "extremely difficult."

Technological innovation is the LED chip enterprises in market competition, then the patent is technological innovation "protection." From a technical breakthrough began LatticePower on silicon substrate LED technology as the core, covering the epitaxial growth, chip manufacturing, packaging and application of patent network rolled out in Europe, America, South Korea, Japan and other countries and regions LED. With its own LED upstream core patent is a long drive home market of the weapon, but also the future of the international giants talisman against patent litigation.

Build support platform, the silicon substrate LED technology innovation accelerator

Although the domestic LED enterprises are well versed importance of technological innovation, but innovation requires research and development platform, incubator, funding platform, personnel platform systemic support.

Obviously, the charm of the silicon substrate LED technology has attracted many outstanding talents at home and abroad gather LatticePower, industrial clusters have been approved by the State Ministry of Science has a silicon LED Engineering Research Center and the National Development and Reform Commission State and Local Joint Engineering solid state light source Technical Center these two strong technology platform, forming a vertically integrated epitaxial materials, chip, package, and application development, coupled with the silicon substrate LED industry chain enterprises jointly many famous universities and research institutes, as silicon substrate LED technology innovation and research to create a powerful platform and technology incubator.

Meanwhile, attracted the Jinsha River, Temasek and a number of well-known international and domestic venture capital fund of funds platform, especially focused on investing in established companies Seong capital Nanchang, built a three-dimensional solid financing platform.

LED industry development and look forward to the large size of the silicon substrate LED technology matures

In no other disruptive technology before, silicon substrate LED technology is one of the most effective ways to reduce the cost of LED. One of the most important means is to use 6-inch and above large-size substrate, epitaxial material.

First, the silicon substrate material is cheap, especially as size increases, the price per unit area continuously decreased; Second, because the effect of the outer ring, the effective number of particles per unit area of ​​the chip is greatly increased. Once again, the large size of the integrated circuit wafer manufacturing technology has been very mature, large-size silicon substrate LED chip technology can learn and mature integrated circuit technology production lines, automated mass production, 6-inch productivity and present 2 inches can improve compared to 11-12 times, effectively reducing the chip cost. Sharp decline in the cost of LED lighting will encourage faster spread.

Currently, in addition to optical crystal, Cree, Osram, Samsung, Lumileds, Toshiba, Epistar and the United States and other international first-tier manufacturers are Micron generous investment in research and development of LED technology, the silicon substrate in order to achieve technological breakthroughs on a silicon substrate. Its release signals may be able to reduce a lot of people questioned on the silicon substrate LED technology. Of course, this also makes a leader LatticePower feel tremendous pressure. It is foreseeable that, following LatticePower production and continue expansion after the silicon substrate LED technology roadmap camp will be increasing.

For decades, the global LED technology follows the "HAITZE" law, has undergone a tremendous change, LED luminous efficiency increased from 100lm / W to 260lm / W (experimental), getting closer to the LED light efficiency limit. When the light efficiency is not the only goal of LED chip manufacturers to pursue, regardless of technology LED sapphire, silicon carbide or silicon substrate LED technology LED technology, cost competitiveness between them when the real Sword.

Aladdin Jury Award, South China Normal University professor, renowned optical experts Wen Shang Sheng said: 'LatticePower company is the second after Japan's sapphire substrate CREE LED technology, the United States CREE company SIC LED technology, the global LED third pole art - silicon substrate LED technology leader, but also China in the field of LED technology most enterprises the right to speak. The latest development of the next-generation silicon substrate GaN-based LED chips, in addition to the traditional vertical structure outside the chip technology, innovation in chip evenly excavation multiple "through holes Via", can make the N-type metal uniform LED chip embedded inside. The benefits of this new technology in two ways: First, the "through-holes Via" uniformly distributed inside the chip, the chip current injection also uniformly distributed in the N-GaN, effectively eliminating the current congestion phenomenon, ease Droop effect, improving light efficiency. Second, to overcome the chronic region of traditional LED light emitting quantum well (MQW) external to the chip by the N electrode of the light emitting block, can significantly improve the light extraction efficiency of the chip. By applying this new technology to the company's optical efficiency crystalline silicon substrate LED chips reach 150lm / W, as the world and the only one can reach far beyond the requirements of lighting applications that can scale production of high-power silicon substrate bottom LED chip.

No dream, why afar?

Optical crystal silicon substrate LED technology in a decade of painstaking research institute's breakthrough is LatticePower team to dream for the end to the struggle as a starting point and the result of tireless work. By LatticePower co-founder, CEO Dr. Wang Min as saying: LatticePower is ideal for business, because there is an ideal, so there attract many local and overseas talent cohesion; Because ideals, so the team can refuse flashy, silently insist years; Because ideals, so you can face the future, goes away.


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