Display apparatus and driving method thereof using a time/space division scheme

A display device comprising:

• a display panel;
• a display panel driving unit configured to convert an image signal provided from an external device into a data signal such that an image is displayed on the display panel and to output a first light control signal and a second light control signal;
• and
• a backlight unit configured to provide the display panel with a first color light and a different second color light in response to the first light control signal and the second light control signal,
• wherein:
• the display panel driving unit is further configured to determine a pulse width of each of the first light control signal and the second light control signal according to a color characteristic of the image signal;
• the backlight unit comprises first and second light sources, each of the first and second light sources being configured to provide one color light from the group consisting of the first color light and the second color light;
• each of the first light source and the second light source consists of a single LED;
• the first color light is a yellow light and the second color light is a blue light;
• the display panel is configured to display an image by a frame unit;
• the display panel driving unit is configured to output the first light control signal and the second light control signal such that the first color light and the different second color light are emitted independently at a first sub frame and a second sub frame, obtained by dividing the frame unit on a time basis;
• and
• the display panel driving unit is configured to operate in one of first to fourth modes according to a color characteristic of the image signal such that the first color light is emitted in the first sub frame in all of the modes, the second color light is emitted in the second sub frame in all of the modes, and at least one of the first color light and the second color light is emitted in both of the first and second sub frames in all except one of the modes.