A transflective liquid crystal display using polymer stabilised vertical alignment mode

Abstract

A transflective liquid crystal display using polymer-stabilised vertical alignment mode with fishbone-shaped electrode structure is proposed. Using the polymer stabilisation technique and patterned direction of pixel electrode structure, initial surface tilt angle and azimuthal angle can be well defined such that the liquid crystal is almost vertically aligned in the transmissive part while it has a certain pretilt angle that satisfies effective retardation of λ/4 with azimuthal direction of 45^o with respect to the analyser in the reflective part. With optimisation of cell structures and surface tilt angles in the transmissive and reflective parts, a high performance transflective display showing excellent readability in any environment light conditions and single-gamma characteristic without using any retardation film or in-cell retarder can be achieved.

Keywords:

• transflective
• vertical alignment
• fishbone-shaped electrode
• polymer stabilisation

Acknowledgements

This study was supported by the World Class University programme (R31-20029) funded by the Ministry of Education, Science and Technology and research funds of Chonbuk National University in 2012.