REFLECTIVE BISTABLE TWISTED NEMATIC LIQUID-CRYSTAL DISPLAY

A reflective bistable twisted nematic (BTN) liquid crystal display has been developed. It combines the advantages of a truly reflective disp lay without the rear polarizer, and the bistable nature of the zero vo ltage state. It was found experimentally that switching between the tw o bistable twist states could be achieved by adjusting the magnitude o f the selection voltage pulse, just like the case in transmittive BTNs . In demonstrating the reflective BTN, we also show for the first time bistability between the -36 degrees and 324 degrees twist states.