| 摘要 |
a substrate (14) ; a first electrode (15) disposed over the substrate for injecting charge of a first polarity; a second electrode (19) disposed over the first electrode for injecting charge of a second polarity opposite to said first polarity; an organic light emitting layer (18) disposed between the first (16) and the second electrode (19) ; and an encapsulant (22) disposed over the second electrode, wherein the second electrode and the encapsulant are transparent to light emitted by the light emitting layer, wherein a cavity (20) is provided between the encapsulant (22) and the second electrode (19), and wherein an anti-reflective coating (24, 26) is provided on at least one side of the encapsulant for reducing reflection of light emitted by the light emitting layer (18) so as to improve out-coupling of light from the device (12), said anti-reflective coating (24, 26) being transparent to light emitted by the light emitting layer (18). ® KIPO & WIPO 2008 |
