keith05.19.08
Idemitsu Kosan Co., Ltd. and Sony Corporation announce the achievement of 28.5% internal quantum efficiency (IQE) in deep blue fluorescent OLED devices, the world´s highest level of luminous efficiency for this technology.
This ground-breaking development is a result of Idemitsu´s advanced OLED material technologies and Sony´s OLED device expertise, brought together by the two companies´ joint development agreement (established in Nov. 29, 2005). This joint agreement has led to the development of a wide range of high-performance OLED materials that have been incorporated in Sony products, and going forward both Idemitsu and Sony will also consider various practical applications for this newly developed, world-leading blue OLED technology.
Previous fluorescent OLED devices were limited to a maximum 25% IQE, however the implementation of new carrier transport materials and optimized device structure has led to the achievement of 28.5% IQE.
Furthermore, the use of Sony´s proprietary “Super Top Emission” OLED device technology has enabled blue color deepness (CIE chromaticity: 0.137, 0.065) exceeding NTSC standards to be achieved. With this technology significantly reducing the driving current of blue OLEDs, the most energy-intensive of the three primary RGB colors, it is expected to significantly reduce the power consumption of OLED panels, contributing to the future development of large-size OLED TVs.
This ground-breaking development is a result of Idemitsu´s advanced OLED material technologies and Sony´s OLED device expertise, brought together by the two companies´ joint development agreement (established in Nov. 29, 2005). This joint agreement has led to the development of a wide range of high-performance OLED materials that have been incorporated in Sony products, and going forward both Idemitsu and Sony will also consider various practical applications for this newly developed, world-leading blue OLED technology.
Previous fluorescent OLED devices were limited to a maximum 25% IQE, however the implementation of new carrier transport materials and optimized device structure has led to the achievement of 28.5% IQE.
Furthermore, the use of Sony´s proprietary “Super Top Emission” OLED device technology has enabled blue color deepness (CIE chromaticity: 0.137, 0.065) exceeding NTSC standards to be achieved. With this technology significantly reducing the driving current of blue OLEDs, the most energy-intensive of the three primary RGB colors, it is expected to significantly reduce the power consumption of OLED panels, contributing to the future development of large-size OLED TVs.