Transflective Liquid Crystal Display Using Commonly Biased Reflectors

A normally black single cell gap transflective liquid crystal display (LCD) using vertical alignment and commonly biased patterned reflectors is developed. In the transmissive region, continuous and uniform vertical electric fields are formed throughout the LC cell. On the other hand, in the reflective region, the electric fields are mainly confined near the substrate surfaces. As a result, the phase retardation in the transmissive region is approximately two times as that of the reflective region. Such a transflective LCD shows a high light efficiency (>90%) for both transmissive and reflective modes and well matched gray scales. (C) 2007 American Institute of Physics.