| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the necessity of increasing the number of pixels when the device is applied for a color display system, to reduce the capacitance in an actuator section and to provide display luminance having no irregularity and improved picture quality. SOLUTION: The device displays the picture corresponding to video signals on an optical waveguide plate 12 by controlling the displacement operations of the contact.separation direction of an actuator section 14 for the plate 12 and controlling secattered beams 70 of a prescribed part of the plate 12. The section 14 consists of an actuator section main body 30 which has a piezoelectric/electrostriction layer 26 and a pair of electrodes 28 formed on a main surface of the layer 26, a vibrating section 22 which is in contact with the other main surface of the layer 26 and supports the body 30 and a fixed section 24 which supports the section 22 in a freely vibrating manner. Moreover, a displacement transfering section 32 is provided to transfer the displacement operations of the body 30 to the plate 12 caused by the voltage application to the electrodes 28.
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