Light extraction device and flexible OLED display

摘要

The light extraction device includes a flexible substrate, an OLED supported by a flexible substrate, a flexible barrier film, a tapered reflector, and an index matching layer.The tapered reflector includes at least one side surface and an upper surface and a lower surface coupled to the flexible barrier film.The upper surface has a larger surface area than the lower surface.The index matching layer is coupled between the top surface of the OLED and the bottom surface of the tapered reflector.Light emitted from the upper surface of the OLED passes through the index matching layer and enters the tapered reflector.At least one side of the tapered reflector includes an inclined surface for turning light from the top surface of the tapered reflector by turning the light into the escape cone.