Nichia
The world's first semiconductor white light manufacturer, the technical level has always been in the international leading position. On the technical route of the blue chip, Nichia uses the patterned sapphire substrate epitaxial growth technology combined with the ITO transparent conductive layer chip technology, and the product performance is superior, especially the low-power chip. The latest report even reaches the performance index of 245lm/W. Nichia's power chip is also based on the formal structure. In 2008, Nichia announced that its power LED products have a luminous efficacy of 145 lm/W and a chip size of 1 mm × 1 mm.
Nichia, a famous LED chip manufacturer, was founded in 1956 to develop the world's first blue LED (1993), the world's first pure green LED (1995), built around the world. Subsidiary.
With the aim of "Ever Researchinga BrighterWorld", Nichia has been manufacturing and selling precision chemicals centered on phosphors (inorganic phosphors). In the process of developing luminescent materials, since the release of the blue LED that shocked the world in 1993, the commercialization of ultraviolet and yellow nitride LEDs and white LEDs has been realized, which has greatly expanded the application fields of LEDs. In addition, Nichia Corporation is vigorously developing a purple-blue laser semiconductor that is indispensable for the development of information media. It is hoped that nitride semiconductors will become a part of the important field in the semiconductor industry in the future.
It is particularly worth mentioning that in 2008 and 2009, Nichia signed various forms of cross-licensing agreements with a number of companies. Among them, on February 2, 2009, the cross-licensing agreement between Nichia and Seoul Semiconductor was the most interesting, which marked that the two companies will officially stop taking four years, in the United States, Germany, Japan, the United Kingdom, and South Korea. In all patent lawsuit cases, the cross-licensing agreement covers LED and LD (laser diode) technologies, which will allow both parties to use each other's patents without restrictions. In addition, Nichia has signed cross-licensing agreements with companies such as Sharp, Luminus, and AgiLight.
Technical advantages: The first commercial GaN-based blue LED/LD; has the best phosphor technology at present; patented blue-light-excited yellow phosphor technology; sapphire substrate epitaxial growth technology.
Seoul Semiconductor (SeoulSemiconductor)
Seoul Semiconductor has grown rapidly in recent years and has risen to the ranks of the world's top LED chip manufacturers. According to a report by British market research firm IMSResearch, Seoul Semiconductor's total revenue of LED packaging products ranked fourth in the world in 2007.
In 2006 and 2007, Seoul Semiconductor Co., Ltd. was selected as one of the most promising companies in Asia in 2006 by Forbes and BusinessWeek magazines. ACRICHE, the semiconductor light source for the main products of Seoul Semiconductor, was selected as the "Best Product Award" by Elektronik, the most authoritative magazine in Europe. In 2008, it was awarded the "Republic of Korea Technology Award" by the Ministry of Knowledge Economy and was expected to become the leading future source of light at home and abroad. Market enterprises.
Total sales for 2008 were $284.1 billion, ensuring more than 5,000 patents. There are 25 overseas sales offices and 114 agencies including 3 local legal entities.
Seoul Semiconductor's main business is the production of full-line LED package and custom module products, including AC-driven semiconductor light source products such as: Acriche, high-brightness high-power LED, side-light LED, top-light LED, SMD LED, plug-in LED and piranha (Super light) LED and so on. Products have been widely used in general lighting, display lighting, mobile phone backlights, televisions, laptops, automotive lighting, household items and traffic signals.
Technical advantages: combined with light and illuminant, with "MODULE" technology; with "DIGITAL" circuit technology; with blue and white LED solutions; with ultra-mini, ultra-thin technology.
Toyota Synthetic (ToyodaGosei)
Toyota Synthetic, headquartered in Aichi, Japan, produces automotive parts and LEDs, which account for about 10% of revenue.
The white LED developed by Toyota Synthetic and Toshiba is a combination of UV LEDs and phosphors, which is different from the general combination of blue LEDs and phosphors. If the LED is likened to a car, then it can be said that Nichia has proposed the concept of the wheel and the engine, while Toyota Synthetic has proposed the concept of the car body and the tire. In 1986, commissioned by the honorary professor Mr. Akasaki, Toyota Synthetic began to develop LED research and development using its own accumulation of thin film technology for automotive parts. In 1987, commissioned by the Science and Technology Promotion Group, Toyota Synthetic successfully formed LED electrodes on sapphire. Therefore, it is not an exaggeration to call Toyota Synthetic "the pioneer of blue LED". Toyota Synthetic has grown at a relatively fast pace in recent years. In 1998, its sales were 6.3 billion yen, but by 2002 it had grown to 25.2 billion yen.
American SemiLEDs
It is a manufacturer of commercial production of thin film GaN vertical structure LEDs using substrate transfer technology after Osram and Cree. They have introduced a new metal substrate vertical current excitation diode (MvpLEDTM), which is packaged into a white light device with a luminous efficiency of 120 lm/W.
Lumination
GELcore is a joint venture between GE Lighting and EMCORE, founded in January 1999 and headquartered in New Jersey, USA. The company is committed to the development and production of high-brightness LED products. By combining GE's advanced lighting technologies, brand strengths and global channels with EMCORE's authoritative semiconductor technology, GELcore has played an important role in transforming people's awareness of lighting. GELcore's existing products include high-power LED traffic lights, large landscape lights, other architectural, consumer and special lighting applications. By combining technologies in various fields such as electronics, optics, mechanics and thermal management, GELcore has accelerated the application of LED technology and created world-class LED systems.
In addition, on February 7, 2007, GELcore, a joint venture between GE and Emcore, has now changed its name to Lumination. GE (GM) purchased the GELcore shares held by Emcore for US$100 million in cash at the end of August 2006, turning GELcore into its A wholly-owned subsidiary, GELcore has been working hard since then and has formed a strategic alliance with Nichia. To further demonstrate the company's reliance on general-purpose LED lighting, GELcore changed its name to Lumination.
Oceanic acid
The research and development of the organic metal meteorological chemical precipitation technology of Oceanic Acid Company can be traced back to 1983, which was produced under the background of the entire compound semiconductor industry revolution in Japan in the 1980s. Total sales for 2008 were $284.1 billion, ensuring more than 5,000 patents. There are 25 overseas sales offices and 114 agencies including 3 local legal entities.
Seoul Semiconductor's main business is the production of full-line LED package and custom module products, including AC-driven semiconductor light source products such as: Acriche, high-brightness high-power LED, side-light LED, top-light LED, SMD LED, plug-in LED and piranha (Super light) LED and so on. Products have been widely used in general lighting, display lighting, mobile phone backlights, televisions, laptops, automotive lighting, household items and traffic signals.
Technical advantages: combined with light and illuminant, with "MODULE" technology; with "DIGITAL" circuit technology; with blue and white LED solutions; with ultra-mini, ultra-thin technology.
Zhejiang Synmot Electrical Technology Co., Ltd , https://www.synmot-electrical.com