Patent ID: 8797257

Claim:
A display device comprising: a first electrode; a plurality of second electrodes; a non-volatile display layer that displays an image, the non-volatile display layer being disposed between the first electrode and the plurality of second electrodes; a driving circuit that drives the non-volatile display layer by applying potentials to the plurality of second electrodes to correspond to information of the display image, respectively; and an image erasing circuit including: a connector that connects the first electrode to an external power source, and a sensor that detects that a plug for supplying the external power source is inserted into the connector, wherein the image erasing circuit erases the displayed image by connecting the first electrode to the external power source through the connector, independent of the driving circuit, when the driving circuit is broken and the displayed image cannot be erased, to make a potential of the first electrode different from the potentials of the plurality of second electrodes, and when the sensor detects that the plug is inserted into the connector, the external power source is electrically connected to the first electrode.