P‐158: Generation of Pretilt Angle and an Alignment Layer Utilizing Binary Mixture in PI‐less Vertical Alignment Mode

Abstract

We demonstrate new approach of polyimide (PI)‐less polymer stabilized vertical alignment (PS‐VA) mode in which binary mixture of single kind of reactive mesogen and LC induces a VA with temperature treatment. The induced VA is fixed at first UV exposure and then a pretilt angle is generated with second UV exposure. The proposed device with two‐step UV exposure exhibits excellent electro‐optics such as fast response time and enhanced on‐state transmittance. This approach fixes a vertical alignment physically unlike chemical bonding in conventional PI‐less VA mode, giving rise to high reliability.