P‐100: Inverse Four Domain Twisted Nematic Liquid Crystal Mode Generated by Photo‐Alignment Method

Abstract

We fabricated an inverse four domain twisted nematic (IFDTN) mode using a stacked photo-alignment layer enhancing the azimuthal anchoring energy. The strong anchoring energy generates the stable 4D twist structures under an applying voltage. High transmittance and contrast device is achieved without complex rubbing processes.

Evaluation of azimuthal anchoring energy for liquid crystal device equipped with color filter by means of renormalized transmission ellipsometry

“…Since the development of liquid crystal devices (LCDs), the importance of the molecular alignment of liquid crystal (LC) at the surface has been recognized, and various techniques have been used to evaluate the surface characteristics. Currently, in‐plane switching (IPS) and twisted nematic (TN) modes by means of the photo‐alignment technique for televisions and the mobile displays, for example, have become the mainstream. As for IPS and TN modes, the cell gap, pretilt angle, twist angle, and azimuthal anchoring energy are well known as important parameters for optimizing the LCD performance.…”