A display device is provided to change a display angle by using a remote controller of the display device without an additional remote controller to adjust the display angle. A signal receiving unit(111) receives a remote controller signal transmitted by wireless. A signal decoder(112) converts the signal transmitted from the signal receiving unit into an analog signal. An interconnection encoder(115) converts the analog signal converted by the signal decoder into a digital signal. The first control unit(116) analyzes the signal transmitted from the signal decoder, extracts only a display angle change signal, and transmits the display angle change signal to the interconnection encoder.
