Development of high-refractive index materials including nanofiller with Nanoimprint and gapfill property expected to be applied to AR

Abstract

In recent years, materials for ARVR have been actively developed, and high Refractive Index (R.I.) materials are required to achieve high performance and a wide field of view. In addition, AR display is a fine display, therefore the display is needed the materials that can be embedded in fine structures. Since AR has a fine structure, it is formed by nanoimprint (NIL) or gap fill processes. In short, materials with a high R.I., high transparency, and NIL and gap filling properties are required for AR waveguide. High R.I. formulation with high fluidity and low volatility are required for NIL and gap fill process, however, in the case of conventional organic materials, there is the trade-off to obtain high fluidity with low volatility. We designed from the molecular structure and realized to solve the trade-off parameters. With that organic material technology and our unique formulation technology, we have realized products that can perform NIL and gap fill even if it contains a large amount of inorganic nano-filler. In addition, by using organic materials for organic EL, it is possible to obtain effective characteristics such as solvent-free materials with high light extraction efficiency. Products using this technology are expected to be applied to AR and OLED.