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Updated: July 8th, 2008 05:26 PM CDT

Mitsubishi Chemical Announces Technology Breakthrough

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Business Wire
via NewsEdge Corporation

TOKYO--(BUSINESS WIRE)--Dec. 20, 2005--Mitsubishi Chemical Corporation (MCC) today announced that it has developed an Organic Light-Emitting Diode (OLED) device with the highest efficiency in the world in its new blue phosphorescence OLED material.

The new OLED material, which can be produced by a lower-cost, wet-coating process, is expected to open the way to the development of a new class of large flat-panel displays.

Unlike LCD screens, OLED devices emit light when an electric current is applied and do not require a backlight to function. They consume less power, have a wider viewing angle and display a brighter image with a refresh rate that is a thousand times faster than LCDs.

Current applications of OLED technology are limited to smaller display screens of mobile phones, car audio, portable music players and similar products because of the difficulty applying current OLED technologies to large screens. This problem could be solved with the evolution of Mitsubishi's OLED technology.

Mitsubishi Chemical Group Science and Technology Research Center, Inc. (MCRC) has been developing materials, mainly phosphorescence-emitting layer material, suitable for manufacturing a thin, bright large-screen display. Phosphorescent material has four times greater luminous efficiency in principle than that of fluorescent material, which is widely employed now. This higher efficiency of phosphorescence leads to low power consumption, which is critical for applications using larger screens such as flat-panel television screens. In addition, the wet-coating method enables low-cost processing and makes practical the fabrication of large-area screens, which has been difficult and expensive using standard vacuum deposition processes.

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