An in-cell Technology of Optical Films for High-Performance LCDs

Abstract

Recently, ”in-cell” technology has been attracting people’s attention for improving LCD performance, in which optical components such as retardation films and/or polarizers are fabricated inside glass substrates. For the technology, the use of UV-curable LC materials combined with a photo-alignment method are expected to bring LCDs into further improvement in the performance. In this study, we had investigated to improving the optical performance of a coating-type polarizer that is made of UV-curable liquid crystal (LC) doped with a dichroic dye (dye-type polarize). We use a stacked layer of a cholesteric film and a quarter wave-plate to make almost linearly-polarized incident light to a dye-type polarizer, and the theoretical and experimental results are shown to demonstrate the usefulness of the method.