Numerical analysis of cross-talk phenomena in pixelated PA-LCos devices

Abstract

The new technological developments and their impact on both the increase of the resolution and the reduction of the pixel sizes on parallel-aligned liquid crystal on silicon (PA-LCoS) microdisplays have made PA-LCoS a promising candidate for phase-only modulation and spatial light modulators (SLMs) applications. The pixel grid pattern on PA-LCoS induces several phenomena, i.e. the electriceld crosstalk in the interpixel region, also known as fringing fields, out-of-plane reorientation of the liquid crystal director, and diffraction effects due to interpixel region. Here, a rigorous numerical methodology has been applied to avoid simplified models that neglect these kinds of phenomena.