| 摘要 |
An electronic paper device is provided. The electronic paper device includes a conductive layer, a number of pixel electrodes, an electrophoretic ink layer, a common electrode layer, a voltage detection unit, and a processing unit. Each pixel electrode corresponds to a coordinate of a coordinate system. The electrophoretic ink layer is electrically connected between the number of pixel electrodes and the common electrode layer. The conductive layer and the common electrode layer have a different voltage when the electronic paper device is powered on. When the user touches the electronic paper device and causes the conductive layers to contact a pixel electrode corresponding to the touch position, the pixel electrode obtains the voltage of the conductive layer and an electric field is form between the pixel electrode and the common electrode layer. This causes the color to change at the position that is corresponding to the touched position.
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