CURED PMMA THIN FILMS FOR GREATLY IMPROVING THE ELECTRO-OPTICAL RESPONSE TIME IN NEMATIC LIQUID CRYSTAL PIXELS

Comprehension of the interface/surface physical anchoring properties of nematic liquid crystals represents a constant challenge for many researchers in the field, while being also of great importance in the flat panel display industry, where controlling and enhancing the characteristics of optical devices based on these active materials is essential. Herein, we demonstrate the use of PMMA thin layers for highly improving the response (rise-up) time in a typical liquid crystal pixel. Experimental investigations show that these polymeric films strengthen the planar anchoring energy at the surface, providing a very fast reorientation of the nematic molecules when the applied electric field is switched off. Therefore, we are able to obtain particularly elevated refresh rates that are highly suitable for display applications.