ELECTROMAGNETIC WRITE HEADS AND BACKPLANES FOR USE IN BI-STABLE, REFLECTIVE MAGNETO OPTICAL DISPLAYS

摘要

A write head for use in a bistable, magnetic optical display comprising one or more conducting coils configured to generate a magnetic field that is substantially perpendicular to the axis of rotation of one or more magneto optical elements of the optical display and parallel to a display viewing plane of the one or more magnetic display elements of the magnetic optical display such that an electrical pulse of less then 150 milliseconds is sufficient to create a magnetic field that alters the bistable state of the magneto optical display such that the display will stay in this new state without the need for ongoing electrical current being applied to the write head.