26.3: Multidirectional Asymmetrical Microlens‐Array Light Control Films for High Performance Reflective Liquid Crystal Displays

Abstract

AbstractThe multidirectional asymmetrical microlens array light control film (MAMA‐LCF) is developed to enhance the image brightness and contrast ratio of reflective liquid crystal displays. Through optimized designs and optical alignments, the MAMA‐LCF which is constructed with asymmetrical microlens arrays, leads to a ∼5× gain in brightness over the MgO standard white and 12:1 contrast ratio for color STN‐LCDs, 10× gain and 11.5:1 contrast ratio for PDLC, and 9× gain over the conventional Ch‐LCD. In each display, the light control film does not induce visible surface diffusion, moiré patterns and parallax.