No abstract

Head mounted displays (HMD) for virtual reality (VR) require superior electro-optical properties such as high resolution over 2000 ppi and super-fast response time in order to realizing super image quality at near-eyes. Conventional liquid crystal (LC) devices utilizing fringe-field switching (FFS) mode, having response times less than half of conventional FFS mode, contrast ratio is still less than 2000 : 1, and resolution over 1000 ppi were proposed. In this paper, we propose a vertically aligned liquid crystal device with use of positive dielectric anisotropy LC, which shows high resolution over 2000 ppi, higher contrast ratio and 4 times faster decay response time than that of conventional FFS mode.

We propose a unidirectionally aligned multi-layered carbon nanotubes (CNT) as a UV polarizer for LC photoalignment, which can replace wire-grid-polarizer (WGP) with high cost. A 12 multi-layered CNT polarizer exhibits the degree of polarization up to 91%. The fringe-field switching (FFS) LC device made by photoalignment with use of the proposed CNT polarizer exhibit uniform LC alignment in whole area and excellent electro-optics. The work proposes not only costeffective novel polarizer replacing WGP for photoalignment of LC but also for photonic component of broadband polarizer from UV to IR.