Patent ID: 8648880

Claim:
A terminal device comprising: a display unit having a first display area and a second display area the first display area being distinguished from the second display area by a vertical or horizontal axis; a detection unit configured to detect as a viewing state a center of a face of a user relative to the vertical or horizontal axis of the display areas, the viewing state being a state in which the first display area and/or the second display area are being viewed; and a control unit configured to activate the first display area to a display state, but remove a backlight from the second display area, when the detection unit detects that the viewing state is only for the first display area by detecting that the center of the face is positioned more than a predetermined amount toward the first display area relative to the vertical or horizontal axis, activate the second display area to the display state, but remove the backlight to the first display area, when the detection unit detects that the viewing state is only for the second display area by detecting that the center of the face is positioned more than a predetermined amount toward the second display area relative to the vertical or horizontal axis, and switch activation between the first display area and second display area when the detection unit detects a switch in the viewing state.