Suzushi Nishimura

Development of Liquid Crystalline Polymer Film “Nisseki LC Film” for Viewing Angle Compensation of Various LCD Modes

To improve quality of images of LCDs such as their viewing angle performance and coloration, liquid crystalline retardation film technology has been developed by using rod-like liquid crystalline polymer. The resulting liquid crystalline retardation film has several advantages over conventional uni- or biaxial stretched retardation film. By using liquid crystalline polymer, the direction of the principal axis can be determined freely for roll-to-roll lamination. Optical well-controlled structures such as twisted nematic, hybrid nematic and homeotropic structures can be stabilized for ideal compensation of various LCD modes including STN, TN, ECB, VA and IPS LCDs.

51.1: Invited Paper: Viewing‐Angle Compensation of TN‐ and ECB‐LCD Modes by Using a Rod‐Like Liquid Crystalline Polymer Film

We have developed a liquid crystalline retardation film technology by using a rod-like liquid crystalline polymer (LCP) for various LCD modes. In particular, considerable improvements in viewing angle performance have been achieved for the Twisted Nematic (TN) and the transmissive/transflective Electrically Controlled Birefringence (ECB) modes by using hybrid aligned nematic film ‘NH Film’.

Optical Properties of Diffusion-Type Cholesteric Liquid Crystalline Polymer Film

Abstract In the application of cholesteric liquid crystal (CLC) polymer film to mono-color polarizers, diffusive reflection is preferred rather than mirror reflection at the point of visibility. This led us to develop a diffusion-type CLC (D-CLC) film. The newly developed D-CLC film exhibits high circular dichroism with bright color reflection that can be observed from almost all directions. The layer structure of the D-CLC film was directly confirmed by analysis with transmission electron microscopy (TEM). It was found that the diffusive property and polarization of the reflected light are mainly affected by the layer structure of the D-CLC.

Viewing-angle compensation of TN- and ECB-LCD modes by using a rod-like liquid-crystalline polymer film

— A liquid-crystal line retardation-film technology by using a rod-like liquid-crystalline polymer (LCP) for various LCD modes have been developed. In particular, considerable improvements in viewing-angle performance have been achieved for the twisted-nematic (TN) and the transmissive/transflective electrically controlled birefringence (ECB) modes by using hybrid aligned nematic film (NH Film).