Journal
OPTICS EXPRESS
Volume 25, Issue 4, Pages 3327-3335Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.003327
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- Universal Display Corporation
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We developed a novel light enhancing film for an organic light emitting diode (OLED) based on polymer dispersed liquid crystal (PDLC). In the film, the liquid crystal droplets are unidirectionally aligned along the film normal direction and exhibit selective scattering. The film scatters light emitted only in directions with large incident angles but not light emitted in directions with small incident angles. When the light is scattered, it changes propagation direction and exits the OLED. The PDLC film reduces the total internal reflection and thus can significantly increase the light efficiency of the OLED. (C) 2017 Optical Society of America
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