| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an apparatus in which a piezoelectric element is arranged in other than the vicinity of the end in a panel.SOLUTION: In an apparatus including a panel 12b, and a piezoelectric element 13 arranged in a predetermined region on the plane of the panel, and transmitting a sound to a human body touching the panel by vibrating the panel in response to vibration of the piezoelectric element, when the piezoelectric element is arranged in the predetermined region of the panel, center of the piezoelectric element is located in a range of 40-60% of the distance from one end to the other end of the panel in a first direction, and in a range of 40-60% of the distance from one end to the other end in a second direction perpendicular to the first direction.</p> |
