Business trend of the smart house market
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LED and organic LED
LED plays a very important role in the
smart house business, and LED producers are busily expanding production
capacity. Mitsubishi Chemical is building a plan to produce gallium nitride
substrates. LED illuminations currently on the market are based on sapphire
substrate, but gallium nitride substrate consumes 50-70% less power and is more
resistant to high power than sapphire substrate. The new plant will start
producing gallium nitride substrates for 100,000 LED bulbs per month starting
in coming October. The company plans to increase LED-related sales including
sales of gallium nitride substrates from 21 billion yen in 2011 to 100 billion
yen in 2015. The company president said, “Organic solar battery, lithium-ion
battery materials, and gallium nitride substrate will become the three sacred
treasures for the growth of his company.”
Sumitomo Chemical focuses on organic electroluminescence.
It has a high degree of energy efficiency because it emits light by itself. In
addition, as the lighting fixture can be as thin as several centimeters thick,
it is possible to create a ceiling that emits light. The company plans to
increase the brightness and decrease the price comparable to a fluorescent lamp
toward 2015. According to a research company, the domestic LED market is
estimated at 140 billion yen, of which 93 billion yen was sales of LED lamps,
in 2011.
A railway station in Tokyo illuminated by organic electroluminescence
lighting
A railway station in Tokyo illuminated by organic electroluminescence
lighting 
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