An electrophoretic display (EPD) with thermal control is disclosed for
controlling and maintaining an image in extreme temperature environments.
Techniques are also disclosed for maintaining the EPD cell threshold
voltage for EPD cells comprising an EPD display media at or above a
desired level in an environment in which the EPD may be subjected to an
extreme temperature. The techniques comprise sensing a sensed temperature
associated with the EPD display media, determining whether the sensed
temperature satisfies a criterion established to ensure that the display
media temperature remains at a level associated with an acceptable EPD
cell threshold voltage, and in the event it is determined that the sensed
temperature does not satisfy the criterion, controlling the EPD display
media temperature as required to bring the sensed temperature to a level
that satisfies the criterion.