PIEZOELECTRIC ACOUSTIC MODULE AND OLED DISPLAY DEVICE

• Main Authors: KATSUNO TAKASHI, IKEZAWA NORIAKI, KUMASAKA KATSUNORI, CHIBA MITSUHARU, ABE YOSHIYUKI, YAMAZAKI OSAMU
• Format: Patent
• Language: English; Japanese
• Published: 23.05.2019
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

To provide a piezoelectric acoustic module and an OLED display device that can reduce the size, reduce the cost, and improve the frequency characteristics.SOLUTION: A piezoelectric acoustic module according to the present invention includes an elastic plate 10 having a rectangular main surface, a first support portion 21 supporting one end of the elastic plate 10 in the longitudinal direction of the main surface, a second support 22 supporting the other end of the elastic plate 10 in the longitudinal direction, a flat plate-like piezoelectric element 40 fixed to at least one main surface of the elastic plate 10, and a fixing portion 30 fixing the first support portion 21 and the second support portion 22 to a vibration receiving body 90 to which vibration is transmitted, and the fixing portion 30 has a layer including a resin.SELECTED DRAWING: Figure 3 【課題】サイズを抑え、低背低コスト化することができるとともに、周波数特性を向上させることができる圧電音響モジュール及びＯＬＥＤ表示デバイスを提供する。【解決手段】本発明にかかる圧電音響モジュールは、矩形状の主面を有する弾性板１０と、主面の長手方向における弾性板１０の一方の端部を支持する第１の支持部２１と、長手方向における弾性板１０の他方の端部を支持する第２の支持部２２と、弾性板１０の少なくとも一方の主面に固定された平板状の圧電素子４０と、振動が伝播される被振動体９０に第１の支持部２１及び第２の支持部２２を固定させる固定部３０と、を備え、固定部３０は、樹脂を含む層を有することを特徴とする。【選択図】図３