Japan MOCVD equipment factory President Matsumoto Ko::GaN-on-Si Dayang acid must be one of the future development of LED Technology

The recent LED equipment market in the MOCVD competition, in addition to the two industry leading manufacturers Aixtron, Veeco Germany, there are other equipment manufacturers stage. Dayang acid (TAIYO NIPPON SANSO), founded in 1910, is Japan's largest industrial gas and air Equipment Manufacturing Company, ranked ranking of global industrial gas industry before five. By metal organic chemical vapor deposition (MOCVD) equipment, the world's top 3 manufacturers of MOCVD were Aixtron, Veeco and the German Japanese Taiyo Nippon acid, this 3 companies in 2011 the global market share as high as 98.4%, among them, Taiyo Nippon sanso global market share is far lower than that of Aixtron and Veeco only. 5.9%, but in the domestic market share in Japan is as high as 70%~80%, Japan's largest MOCVD manufacturer.

In addition to invite Dr. ledinside chairman Koh Matsumoto (Dayang acid CEO Matsumoto power) share the current status and trend of LED equipment and LED technology to enhance the industry, also do the interview, please provide valuable experience in the industry he. Dr. Matsumoto Ko specializes in the study of ETL's photosensitive procedures, is committed to the design and production of MOVPE tools, and engaged in the study of CS epitaxial growth and the development of the reactor, etc..

Dayang acid Corporation CEO Dr. Matsumoto (Koh Matsumoto) power in Taipei LEDforum 2011 speech "using innovative MOCVD tools, Gan on sapphire and silicon substrates to improve capacity of LED"

LED production technology upgrade: sapphire substrate size evolution

Matsumoto Gong president pointed out that the current system manufacturers and Japanese manufacturers to use more than 4 inches sapphire substrate for LED use, while mainland Chinese manufacturers are using a sapphire substrate of 2 inches. With the increasing efficiency of equipment and LED talent technology, estimated in the next 4 inches sapphire substrate will also be widely valued by LED manufacturers. Although the 6 inch sapphire substrate is still limited by the current technology, so that the LED chip yield and fragmentation rate is still a bottleneck to break through.

The acid will be published the latest MOVPE machine UR26K in 2012, with 6 inch substrate, a production operation from 6 pieces of the original production, increased to 10, the number of not only makes the increase in multiples of each wafer chip, so the cost also decreased significantly. Through the composition of Gan structure, can successfully reduce the number of sub wells stacked layers, single operation time is also significantly reduced, the output of a single day is also greatly increased by about doubled.

With the continuous improvement of equipment technology, the work of Dr. Matsumoto believes that every four years, MOVPE production capacity to achieve a multiple growth. In addition, he believes that GaN-on-Si is definitely one of the future development of the technology, but due to the technical difficulties of the silicon substrate and GaN is due to the thermal expansion coefficient is different, in the process will produce stress because of two kinds of material between the lattice dislocation, and the formation of cracks and curvature (bow), (crack) the past has not been widely used in the industry, but not to deny, because the generated heat conduction, less heat dissipation design helps to simplify the products.

Development of LED market in Japan in 2012

Turning to the development of the Japanese market, he pointed out that in 2011 the LED market by the terminal demand downturn and the Japanese earthquake brought about by the dual impact of power rationing policy, LED lighting market share in Japan has more than 50%. At present, the price of light bulbs in Japan have been under the pressure of brand competition, the price is about 2500~3000 yen, while the wide angle of the LED light bulb is still maintained at 4000 yen, the market acceptance is higher than before.

In addition to price considerations, because the Japanese prefer warm white light color, light color is still a very important factor for consumers to consider, so the improvement of color, light quality uniformity is also a point of attention. However, the development of LED backlight market is worrying, originally in an optimistic, the overall market demand as expected, LED panel manufacturers have reduced shipments, and even closed the sale of its business. Therefore, most manufacturers also hope Eco-Point system can restart in winter, except for winter electricity, also through subsidies, maintenance demand of LED terminal application market.

LEDinside view

Due to the MOCVD market, Aixtron, Veeco two already have the vast majority of the market, the other MOCVD device manufacturers to relatively hard way to some. Originally the main market is the Japanese LED manufacturers, Dayang acid, recently is more actively promote the overseas market, with GaN on Slicon to MOCVD silicon substrate epitaxial device to cut into the market, demand is the difference.

LEDinside believes that, in order to plant the point of view of the plant, such a strategy is also a chance to succeed, by the difference between the two and the big manufacturers to find other niches and application of the LED market.