32.1: Research of Nanocomposite Materials with High Refractive Index for HLEMS Application

Abstract

The HLEMS (High Light Extraction Micro Structure) technology could improve the light out‐coupling efficiency and reduce the power consumption of OLED display, by modifying parts of the light extraction paths through the redesign of micro structures and the optimization of film refractive indexes. Ink and OC nanocomposites with high refractive index are the key materials to realize the HLEMS technology, their fabrications and qualities of films are particularly important. In this work, the curing processes and mechanisms of Ink and OC nanocomposites were researched respectively. The film properties were characterized by Fourier transform infrared spectrometer (FT‐ IR), dynamic thermal mechanical analyzer (DMA), and ellipsometer. The refractive index of Ink nanocomposite is greater than 1.67 @ 550nm, and the refractive index of OC nanocomposite is greater than 1.70 @ 550nm.