Patent ID: 9019252
Filing Date: 2015-04-28
Classification: G09G

Abstract:
1. A display device comprising: a display unit including a display control unit configured to (a) in a standby mode, turn the voltage applied to the first electrode and the second electrode off when environmental illumination is below a predetermined illumination value wherein the display unit is turned white and, (b) when the voltage is turned on in the standby mode, control the timing of switching the voltage between positive and negative based on a display frame rate received from a control unit; and the control unit configured to instruct the display control unit (a) to set the display frame rate to one of several predetermined values based on an amount of the environmental illumination being equal to or greater than the predetermined illumination value during the standby mode for making the display unit transparent, and (b) set the display frame rate to a value higher than the predetermined value during an information display mode for displaying information on the display unit.