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    • 1. 发明授权
    • Micromechanical sound transducer having a membrane support with tapered surface
    • 具有带锥形表面的膜支架的微机械声换能器
    • US08461655B2
    • 2013-06-11
    • US13077642
    • 2011-03-31
    • Wolfgang KleinUwe SeidelStefan BarzenMohsin NawazWolfgang FrizaXu ChengAlfons Dehe
    • Wolfgang KleinUwe SeidelStefan BarzenMohsin NawazWolfgang FrizaXu ChengAlfons Dehe
    • H01L29/84G02B26/00B01D1/22
    • B81B3/0072B81B2201/0257B81B2203/0127B81B2203/0384B81C1/00103
    • A method for manufacturing a micromechanical sound transducer includes depositing successive layers of first and second membrane support material on a first main surface of a substrate arrangement with a first etching rate and a lower second etching rate, respectively. A layer of membrane material is then deposited. A cavity is created in the substrate arrangement from a side of the substrate arrangement opposite to the membrane support materials and the membrane material at least until the cavity extends to the layer of first membrane support material. The layers of first and second membrane support material are etched by applying an etching agent through the cavity in at least one first region located in an extension of the cavity also in a second region surrounding the first region. The etching creates a tapered surface on the layer of second membrane support material in the second region. The etching continues at least until the layer of second membrane support material has been removed in the first region to expose the layer of membrane material.
    • 微机械声换能器的制造方法包括分别在第一蚀刻速率和较低的第二蚀刻速率的基板装置的第一主表面上沉积连续的第一和第二膜支撑材料层。 然后沉积一层膜材料。 在衬底布置中从衬底装置的一侧与膜支撑材料和膜材料形成空腔,至少直到空腔延伸到第一膜支撑材料层。 第一和第二膜支撑材料的层通过在位于腔的延伸部中的至少一个第一区域中,在围绕第一区域的第二区域中施加蚀刻剂而通过空腔施加蚀刻剂。 蚀刻在第二区域中在第二膜支撑材料层上产生锥形表面。 蚀刻继续至少直到第二膜支撑材料层在第一区域中被去除以暴露膜材料层。
    • 2. 发明申请
    • Micromechanical Sound Transducer Having a Membrane Support with Tapered Surface
    • 具有锥形表面的膜支撑的微机械声音传感器
    • US20120248554A1
    • 2012-10-04
    • US13077642
    • 2011-03-31
    • Wolfgang KleinUwe SeidelStefan BarzenMohsin NawazWolfgang FrizaXu ChengAlfons Dehe
    • Wolfgang KleinUwe SeidelStefan BarzenMohsin NawazWolfgang FrizaXu ChengAlfons Dehe
    • H01L29/84H01L21/02
    • B81B3/0072B81B2201/0257B81B2203/0127B81B2203/0384B81C1/00103
    • A method for manufacturing a micromechanical sound transducer includes depositing successive layers of first and second membrane support material on a first main surface of a substrate arrangement with a first etching rate and a lower second etching rate, respectively. A layer of membrane material is then deposited. A cavity is created in the substrate arrangement from a side of the substrate arrangement opposite to the membrane support materials and the membrane material at least until the cavity extends to the layer of first membrane support material. The layers of first and second membrane support material are etched by applying an etching agent through the cavity in at least one first region located in an extension of the cavity also in a second region surrounding the first region. The etching creates a tapered surface on the layer of second membrane support material in the second region. The etching continues at least until the layer of second membrane support material has been removed in the first region to expose the layer of membrane material.
    • 微机械声换能器的制造方法包括分别以第一蚀刻速率和较低的第二蚀刻速率在衬底布置的第一主表面上沉积连续的第一和第二膜支撑材料层。 然后沉积一层膜材料。 在衬底布置中从衬底装置的一侧与膜支撑材料和膜材料形成空腔,至少直到空腔延伸到第一膜支撑材料层。 第一和第二膜支撑材料的层通过在位于腔的延伸部中的至少一个第一区域中,在围绕第一区域的第二区域中施加蚀刻剂而通过空腔施加蚀刻剂。 蚀刻在第二区域中在第二膜支撑材料层上产生锥形表面。 蚀刻继续至少直到第二膜支撑材料层在第一区域中被去除以暴露膜材料层。