에어갭형 박막 벌크 음향 공진기 및 그 제조방법, 이를이용한 필터 및 듀플렉서
    61.
    发明公开
    에어갭형 박막 벌크 음향 공진기 및 그 제조방법, 이를이용한 필터 및 듀플렉서 有权
    AIR-GAP TYPE beta alpha ?? 使用FBAR的制造方法和FBAR制成的滤波器和双工器。

    公开(公告)号:KR1020050033701A

    公开(公告)日:2005-04-13

    申请号:KR1020030069543

    申请日:2003-10-07

    CPC classification number: H03H9/587 H03H3/02 H03H9/105 H03H9/173 Y10T29/42

    Abstract: A method for fabricating an air-gap type FBAR, an FBAR fabricated thereby, and a filter and a duplexer using an FBAR are provided to form simply an air gap without a CMP process, and a process for removing a sacrificial layer by laminating an LCP thin film on a silicon substrate having a cavity part. A first substrate(200) includes a cavity part formed on a predetermined region of an upper surface thereof. A dielectric layer(220) is formed on the first substrate(200) in order to form a first air gap(210) on the cavity part of the first substrate(200). A stacked resonance part(230) is formed by laminating a bottom electrode/piezoelectric layer/top electrode on the dielectric layer(220). A second substrate(240) includes a cavity part formed on a predetermined region of a bottom surface thereof.

    Abstract translation: 提供一种用于制造气隙型FBAR,由此制造的FBAR和使用FBAR的滤波器和双工器的方法,以简单地形成没有CMP工艺的气隙,以及通过层压LCP来去除牺牲层的工艺 在具有空腔部分的硅衬底上的薄膜。 第一基板(200)包括形成在其上表面的预定区域上的空腔部分。 在第一基板(200)上形成电介质层(220),以在第一基板(200)的空腔部分上形成第一气隙(210)。 通过在电介质层(220)上层叠底部电极/压电体层/顶部电极而形成层叠谐振部(230)。 第二基板(240)包括形成在其底面的预定区域上的空腔部分。

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