Patent ID: 8106852

Claim:
A display device comprising: a first display unit that provides a light emitting display by individually controlling a light emitting quantity for each pixel; a second display unit that allows either a transmitting state for transmitting light or a reflecting state for reflecting light to be selected in correspondence to each pixel and brings up a display by assuming a specific combination of a transmitting area and a reflecting area, and a display control unit that controls display at the first display unit and display at the second display unit, wherein: a display element of the second display unit has a memory function, and the second display unit is layered over the first display unit so that the first display unit can be viewed through the transmitting area at the second display unit; and the display control unit sequentially (1) issues a drawing instruction for the first display unit and also issues an instruction for the second display unit to set at least pixels corresponding to a drawing area at the first display unit in the transmitting state at the second display unit, (2) issues a drawing instruction for the second display unit with identical contents to those in the drawing instruction for the first display unit except for at least a display color, and also issues an instruction for the first display unit to draw a specific color at pixels at the first display unit corresponding to a drawing area at the second display unit in synchronization with a drawing speed at the second display unit, after drawing at the first display unit, and (3) stops display control on at least the first display unit after drawing at the second display unit ends.