A display apparatus including: a backlight unit generating a light; a display panel receiving the light to display an image; a backlight driving circuit receiving a driving power and a control signal from an external system to drive the backlight unit; a display panel control circuit receiving a driving signal and an image signal from the external system to control the display panel; and a connector electrically connecting the external system to the backlight driving circuit and the display panel control circuit, wherein the driving power, the control signal, the driving signal and the image signal are transmitted through the connector.