OLED DEVICE HAVING IMPROVED LIGHT OUTPUT

摘要

An organic light-emitting diode (OLED) device, comprising: first and second non-metallic transparent electrodes (13, 16), and one or more layers of organic material (14) formed between the first and second non-metallic transparent electrodes (13, IS), the layers of organic material (14) including one or more light-emitting layers; and one or more non-metallic reflective layers (15) located on a side of either of the first or second non-metallic transparent electrodes (13, 16) opposite to the organic material layers (14) ; wherein the device further comprises a light transmissive scattering layer (22) in optical contact with the organic material layers (14) and the electrodes (13, 16) or wherein at least one of the one or more non-metallic reflective layers (15) comprises a reflective scattering layer (23) in optical contact with the organic material layers (14) and the electrodes (13, 16) . Additionally, a low-index layer (19) is preferably employed in various embodiments to improve device sharpness.