Toshiba Corp exhibited a technology that can significantly enhance light extraction efficiency of OLED TVs and lighting equipment at the International Nanotechnology Exhibition & Conference.

OLED is anticipated to become an important light-emitting device for the next generation," Toshiba said in a statement.

The new technology is designed to form patterns called "nano-grating," which have a pitch of several hundred nanometers, on a SiO2 substrate.
Toshiba used the nano-grating for OLED devices and succeeded in improving the light extraction efficiency by 1.6 times compared with a case where no measures are taken.
It has been known that a diffraction grating has an effect to extract light with a wavelength equivalent to the grating space. However, there have been few techniques to accurately produce a diffraction grating with a wavelength spacing corresponding to visible light.

Toshiba has been making efforts to enhance the light extraction efficiency of OLED devices by producing such a diffraction grating with the use of a technology called "self-assembly nanoengineering."
Toshiba said that its television wallpaper project is still in the research stages and is several years away from commercial production.

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