| 摘要 |
<p>Provided is a planar transparent piezoelectric speaker in which electrode patterns have been made less visible. The piezoelectric speaker (10) is constructed by arranging a first piezoelectric speaker (201) and a second piezoelectric speaker (202) on the opposite principal surfaces of a flat-plate-shaped base member (100). The first piezoelectric speaker (201) includes a piezoelectric polymer sheet (210) having high light transmittance, and substantially transparent electrode patterns (211, 212) that have substantially the same shape and that are formed on the opposite surfaces of the polymer sheet (210). The electrode patterns (211, 212) are divided into a plurality of principal electrodes (E11A, E11B, E12A, E12B, E21A, E21B, E22A, E22B) by dividing lines which are non-electrode-forming sections. An insulating resin (I11, I12, I21, I22) having substantially the same translucency as the principal electrodes is provided in the non-electrode-forming sections.</p> |
