Techniques for independently controlling deflection, deceleration, and focus of an ion beam are disclosed. Also, the control apparatus sets the overlap amount large using normal control when the vehicle is traveling, even if the engine is idling. A beam splitting element is disposed within the second tube. A gate insulating film is around the pillar-shaped semiconductor layer and a metal gate electrode is around the gate insulating film. Therefore, portrait video is very promising for video broadcast and communication on 2.