Increased organic light-emitting diode panel light efficiency by optimizing structure and improving alignment of pyramidal array light-enhancing layers

Abstract

A Pyramidal array light-enhancing layer (pyramidal ALEL) on ail organic light-emitting diode (OLED) panel has been optimized to enhance the luminance efficiency with a gain factor of 2.03 experimentally. The issues resulting from the misalignment of the ALEL and OLED pixels were investigated with respect to the effects of the pixel spacing and Moire pattern. The pixel spacing effect has been shown to be the main cause of gain loss during alignment, whereas the Moire pattern effect has been shown to be suppressed under the conditions of an appropriate rotational alignment and identical sizes for the ALEL and OLED pixels.