Preparation of Chiral Liquid Crystal Films by Spin Coating and the Study of Their Optical Properties

• Main Authors: Yang, Tzu-Hsing, 楊子興
• Other Authors: Chen, Jiun-Tai
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/6v42xb

碩士 === 國立交通大學 === 理學院應用科技學程 === 106 === In recent years, the development of large-area displays with higher resolutons has attracted great interest for researchers in research institutes and high-tech companies. For liquid crystal displays, the viewing angles are important for better consumer experiences. Usually phase retardation films, optical polarization films with quarter wavelength retardation films, are used. The effect is achieved by converting linear polarization lights to circular polarization lights. On the market, the commercially available quarter wavelength retardation films are produced by cutting the original films at angles of 45 degrees; during the manufacturing processes, more films are wasted and the sizes of the substrates are limited. In this work, we study the fabrication of phase retardation films using chiral liquid crystals. The film thicknesses are controlled by the spin-coating rates. Depending on the chiral properities of the liquid crystals, quarter wavelength retardation films are developed. This study provides better understanding in designing compensation films for flexible display applications.