Memory Effect Canceling and Novel Driving Scheme of Twisting‐ball Display via Space‐charge Polarization

Abstract

In this paper, characteristics of memory effect cancelling method for twisting‐ball display utilizing space‐charge polarization were examined. Response speed of the display to voltage removal became slow with increasing resistance value of resistors connected in parallel to the display. Memory effect canceling was effective with the resistance value at least up to 1 GΩ. Polarization and depolarization of space‐charges in a twisting‐ball display were completed in 60 s at 50 V and space‐charge polarization was induced under 1 Hz. The strength of space‐charge polarization can be controlled by the extent of progress of polymerization of the silicone rubber sheet, which means unpolymerized silicone rubber molecules or cross‐linker molecules can be charge careers in the display. Also, we proposed and demonstrated a novel driving scheme for the twisting‐ball display utilizing space‐charge polarization, which achieved simple structure, fast response and low energy consumption.