Reflective LCD technology with high image qualities and its practical use

Abstract

We review our developed reflective and transflective LCD technologies, which provide high quality color image, low power consumption and good visibility. Our reflective LCD technology, based on a new twisted-VA mode and micro reflective structures, had excellent optical properties such as high reflectance, high contrast ratio and high NTSC ratio. Flicker-less 1Hz driving was achieved with applying IGZO-TFT technology and optimal panel designs. Considering the visibility in dark environments, a novel transflective LCD technology was developed based on the reflective technology. We successfully applied those technologies into LCD products the mass production of which has been started since 2020.