39.1: Invited Paper: Novel Photo‐Alignment Material for Ultra‐High Definition VA LCDs

Abstract

Ultra‐high definition vertically photo‐aligned LC‐displays inherently suffer from lower backlight transmittance. We proved, experimentally and by simulation, that the transmittance is increased by lowering the pre‐tilt angle. Novel material based on Rolic's proprietary photo‐alignment technology yielding low pre‐tilt angles and high reliability is developed and qualified for mass production by CEC Panda.

Alignment control technology of liquid crystal molecules

“…In a UV 2 A, a four‐domain–divided RTN mode, the disclination line width is reduced by 18%. This is achieved by lowering the pretilt angle from 88.5° to 87.5° . Further progress towards still higher definition can be expected in the future.…”

“…This is achieved by lowering the pretilt angle from 88.5°to 87.5°. 105,106 Further progress towards still higher definition can be expected in the future. VA materials have been developed for stable pretilt angles of only 87.4°to 87.8°by photoalignment.…”