Devices and methods to improve light outcoupling from an OLED array

摘要

A device, includes a substrate, an organic light emitting diode (OLED) disposed over the substrate, a first layer optically coupled to the OLED and having a first surface including a first plurality of topographical surface features and an index of refraction n1, and an enhancement layer optically coupled to the OLED and vertically stacked with the first layer, having a thickness of not more than 100 nm, a second surface including a second plurality of topographical surface features, and an index of refraction n2, wherein n2 has at least a 0.1 difference from an index of refraction of at a top layer and a bottom layer adjacent to the enhancement layer.

主权项

1. A device, comprising:
a substrate; an organic light emitting diode (OLED) disposed over the substrate; a first layer optically coupled to the OLED and having a first surface including a first plurality of topographical surface features and an index of refraction n1; and an enhancement layer optically coupled to the OLED and vertically stacked with the first layer, having a thickness of not more than 100 nm, a second surface including a second plurality of topographical surface features, and an index of refraction n2, wherein n2 has at least a 0.1 difference from an index of refraction of a top layer and a bottom layer adjacent to the enhancement layer.