| 摘要 |
A flat panel hybrid speaker is provided to enhance a sound quality in the whole range including a high band and a low band by forming an aerogel layer on one side of a second vibration plate. In a flat panel hybrid speaker, a first vibration plate(200) includes an air hole(210) on one side and a protruded plane(220) protruded from a center downward with a predetermined height as one body. A second vibration plate(500) positioned on a bottom of the first vibration plate(200) includes an aerogel layer formed by applying the aerogel on one side. A PCB(Printed Circuit Board)(400) arranged between the first and second vibration plates(200,500) connects the first vibration plate(200) with the second vibration plate(500) electrically, includes a receiving hole(410) on a center, and receives an external AC voltage. A piezoelectric resonator(300) placed in the receiving hole(410) of the PCB(400) converts an electrical signal into a physical force by being interposed between the first vibration plate(200) and the second vibration plate(500), wherein the piezoelectric resonator(300) is contacted with the first vibration plate(200) and the second vibration plate(500) respectively. Cases(100,600) accommodate and fix the first vibration plate(200), the second vibration plate(500), the PCB(400), and the piezoelectric resonator(300). |
