압전형 스피커 및 그 제조 방법
    1.
    发明公开
    압전형 스피커 및 그 제조 방법 有权
    压电扬声器及其制造方法

    公开(公告)号:KR1020110064369A

    公开(公告)日:2011-06-15

    申请号:KR1020090120935

    申请日:2009-12-08

    Abstract: PURPOSE: A piezoelectric speaker and a manufacturing method thereof are provided to minimize distortion of sound by preventing a stationary wave, caused by structural symmetry, from occurring. CONSTITUTION: A piezoelectric thin film(110) converts an electric signal into a physical vibration signal. An upper electrode and a lower electrode are formed in an upper part and a lower part of the piezoelectric thin film. A damping layer is formed in a lower part of the piezoelectric thin film. An acoustic diaphragm(170) and the piezoelectric thin film have a slope structure. A frame(190) fixes the acoustic diaphragm by using a high elastic adhesive material(180). The damping layer is formed as a thin film with a regular thickness including a material with a low viscosity and a high elasticity. The damping layer prevents distortion of the sound caused by thickness deviation of a piezoelectric speaker membrane.

    Abstract translation: 目的:提供一种压电扬声器及其制造方法,以通过防止由结构对称引起的静止波来最小化声音的失真。 构成:压电薄膜(110)将电信号转换为物理振动信号。 上电极和下电极形成在压电薄膜的上部和下部。 在压电薄膜的下部形成阻尼层。 声膜(170)和压电薄膜具有倾斜结构。 框架(190)通过使用高弹性粘合剂材料(180)固定声膜。 阻尼层形成为具有规则厚度的薄膜,其包括具有低粘度和高弹性的材料。 阻尼层防止由压电扬声器膜的厚度偏差引起的声音变形。

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