without significant work on performance optimization

The new technology developed by NHK and Nippon Shokubai proved that it is possible to significantly improve durability just by changing the structure inside an OLED device and its materials.According to the announcement, the light-emitting area of the previous OLED device produced by NHK and Nippon Shokubai decreases by half in 100 days in the air due to the oxidation of their negative electrodes, while the latest OLED device hardly deteriorates under the same conditions. Therefore, the cost of sealing materials to be located outside of an OLED device can probably be decreased.The new Led flood light device has the "inversed OLED structure, which means the structure between the electrodes of a bottom-emission device is inverted. Specifically, an electron-injection layer, electron-transport layer, light-emitting layer, hole-transport layer and positive electrodes are formed in this order on a transparent substrate/transparent negative electrodes (ITO).

In a normal bottom-emission OLED devices, the hole-transport layer, light-emitting layer, electron-transport layer and electron-injection layer are formed in this order on a transparent substrate transparent positive electrodes, and then, negative electrodes are formed.Earlier in May, Panasonic Corp announced that it has developed a white OLED with the world's highest luminous efficiency of 114 lm/W. Improvements in the efficiency of this OLED device were due to  the company's focus on optimizing light extraction technology for an all-phosphorescent white OLED.  As a reminder, Panasonic Idemitsu OLED Lighting, a joint venture of Panasonic and Idemitsu, began volume production of OLED lighting panels in October 2012.  The partnership was established back in 2011,with an initial investment of $182 Million, Panasonic having a 51% stake and Idemitsu 49%.This luminous efficiency, according to roadmaps by Konica Minolta, is expected to reach 120lm/W by 2015, which is close to the efficiency LED lighting.  These efforts of improving efficiency, something that's also witnessed in other parts of the world like the USA or Europe,  are in contrast to what is observed in Taiwan for example, where the focus is on expanding capacity for existing OLED panels, without significant work on performance optimization.

Identifying the right solutions for encapsulation of flexible OLEDs has been a top priority for most companies developing OLED technologies.  Flexibility in form factor without compromising lifetime is seen as one of the key selling points of OLED lighting hence, developments of flexible barriers for oxygen and moisture are paramount for the future of Led high bay light One of the approaches is that of Asahi Glass Company, that first demonstrated its flexible glass at SID's Display Week in 2011.  At only 0.1mm thick, the company's engineers came up with an easier way to handle the ultrathin glass: The technique uses an adsorption layer to temporarily attach the 0.1-mm-thick sheet to a 0.5-mm-thick sheet of carrier glass, which is much easier to handle during fabrication of devices.

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