OLED application dawn

One of the sixth Chinese International Semiconductor Lighting Forum at the same time supporting activities 2009 OLED LIGHTING that OSRAM Opto Semiconductors in a research project successfully developed OLED large transparent light source of the prototype, the thickness of only a few hundred microns. Thanks to the new technology, the organic light-emitting diode is not required to be packaged independently, and can be surprisingly thin in any design. The luminous area of the transparent sample is 210 cm2, which shows the great potential of the OLED light source, which shows that many extraordinary lighting dreams will come true one day.

As technology advances, AMOLED is expected to further develop in the direction of large and medium size. The notebook computer is a concern of the application direction of AMOLED manufacturers, estimated from the mid of 2010, manufacturers will have the opportunity to apply AMOLED on a laptop computer, and the AMOLED panel Netbook will have the opportunity to start mass production by the end of 2010.

In terms of TV, is expected by the end of 2010 there will be more than 20 inches AMOLEDTV production, while expected in 2011, more than 30 inches AMOLEDTV will enter the market.

The bottleneck of the OLED is that the antioxidant ability of the light-emitting material is very poor, and the vacuum glass seal is needed to prevent the oxidation of the TFT-LCD. Because OLED is a current mode device that requires relatively high current drive, it is required that the LTPS TFT substrate.

OLED limitations in the equipment is also very large, the current production equipment OLED only TOKKI and ULVAC two. TOKKI is the main, its glass substrate size is only 370mm*470mm. The luminescent material is mainly DuPont, BASF and Idemitsu Kosan, these chemical giants on this scale is only TFT-LCD 1% of the market is not too much interest.

Compared to OLED and TFT-LCD, the cost of TFT-LCD 75% comes from raw materials. No matter how big the size of the production line, the proportion of raw materials will not decline in TFT-LCD, while the cost of raw materials accounted for less than 25% OLED. TFT-LCD development today, has been unable to further reduce costs effectively. Once the OLED yield increased to 70%, TFT-LCD will have no place to go.

Because the OLED is expected to become the new mainstream lighting lamp, its hidden behind the huge business opportunities, has attracted the global OLED research investment of about sixty companies, including nearly half of firms engaged in promotion materials, international lighting manufacturers also began to set off the patent layout, OLED lighting application innovation trend. At present, have developed the luminous efficiency reached 100lm/ watt OLED, and the industrialization of OLED reached 50-60lm/ watts, but the brightness, lifetime and luminous efficiency of three big problems, OLED still has many advantages in light of characteristics of the production problem.