To provide a shutter device unit in which it is possible to reduce power consumption, and even with a battery, a sufficient operating time can be obtained for 3D eyeglasses, and to provide a 3D image display system.
The shutter drive unit includes: a first clamping circuit 101 adapted to clamp a first drive object capacitive load LC101 either to a power source potential or to a reference potential through a first drive path P101; a second clamping circuit 102 adapted to clamp a second drive object capacitive load LC102 either to the power source potential or to the reference potential through a second drive path P102; a first switch 103 adapted to switch connection and non-connection between an inductor L101 and the first drive object capacitive load over to each other; a second switch 104 adapted to switch connection and non-connection between the inductor and the second drive object capacitive load over to each other; and a power collection portion 105 having a function of applying an intermediate voltage between the power source potential and the reference potential to the inductor, and a power collecting function of collecting a power by the inductor.
SUZUKI TOSHIO
HASHIGAKI KOICHI
SAKAI MASATAKE