Liquid crystal VAN tilt bias by surface relief patterning

P-212: A 0.83ʺ Full HDTV Liquid Crystal on Silicon Component with In-Pixel Memory and 450Hz Refresh Rate

“…An optimized final LC material was developed to meet RPTV product requirements. A large number of high level LC simulations [1][2] [3] at the pixel level have been carried out to optimize and predict the performances of the complete system in terms of brightness, contrast ratio and color rendering. Critical simulation results have been validated thanks to the characterization of adequate test cells.…”

VAN LCOS Microdisplays: A Decade of Technological Evolution

“…This method is best known from the larger direct-view LCD panels where it is used to create multi-domain switching, i.e., each pixel is divided into subpixels which have distinctive tilt directions. Some attempts to employ this technique for LCOS devices have been undertaken [21] with suitably smaller surface relief. The additional steps and cost to make the needed relief make this approach however less attractive.…”