P-198L:Late-News Poster: Graphene-Based Polymer Stabilized Liquid Crystal Electro-Optic Device

Abstract

We demonstrate polymer stabilized vertical alignment (PS-VA) and in-plane switching (IPS) liquid crystal display (LCD) prototype devices manufactured using graphene as a transparent conductive electrode. Electro-optical performance of graphenebased PS-VA and IPS LCD prototypes is shown to be comparable and the optical transmittance is better than of ITO prototypes with an identical design. Graphene is demonstrated to be compatible with processing standards of modern LCD industry and to have a great potential for display and other electro-optical applications of liquid crystals.

Command Electro-Optical Switching of Photoaligned Liquid Crystal on Photopatterned Graphene

“…Graphene-based electronic devices have stimulated a continuous interest for application of graphene as a transparent conductive electrode in LC EO devices 9 – 14 . Consideration of graphene and graphene oxide transparent electrodes has been extended for applications in voltage controlled liquid crystal (LC) terahertz phase shifters 15 – 18 , polymer dispersed liquid crystal (PDLC) devices on rigid glass and flexible plastic substrates 19 , 20 , and flexible plastic contact lenses 21 .…”

“…However, challenges to align the LC using rubbing of either PVA or PI alignment layers require to consider non-contact alignment for the best optical contrast ratio (CR) and EO performance. Such techniques are photoalignment in the case of planar alignment and polymer stabilization for vertical alignment (VA) 14 , 24 – 26 .…”