Multi-domain liquid crystal display with self-aligned 4-domains on surface relief gratings of photopolymer

Abstract

We propose a new method of fabricating a vertically aligned multidomain liquid crystal display (LCD) using surface relief gratings. A linear array of surface relief gratings is produced in the photosensitive polymer coated on glass; substrates by the illumination of the UV light through a photomask. The LCD cell is assembled with two grating surfaces in such way that their grating vectors are orthogonal to each other. In this configuration, the nematic molecules are reoriented by a distorted electric field at the grating surfaces to make four different domains. The cell shows good extinction in the off-state and the wide-viewing property in the on-state.