COLOR ELECTRONIC PAPER KEYPAD DEVICE

摘要

A color electronic paper keypad device is provided that includes an electronic paper sheet having a plurality of electrode patterns. One or more of the plurality of electrode patterns displays a color depending on whether an electric field is applied. The device also includes a color display disposed over the electronic paper sheet. The color display changes the displayed color depending on whether a second electric field is applied. An illumination light reflects from or transmits through the color display to change the displayed color of the one or more electrode patterns. The device further includes a front light unit for illuminating said color display.