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    ELEKTRETSTRUKTUR
    1.
    发明公开
    ELEKTRETSTRUKTUR 审中-公开
    驻极体

    公开(公告)号：EP3058760A1

    公开(公告)日：2016-08-24

    申请号：EP14753067.9

    申请日：2014-08-19

    申请人： Robert Bosch GmbH

    发明人： BARTYLLA, David ,  MAIER, Nicolas ,  HIRTH, Erhard

    IPC分类号： H04R19/01 ,  B06B1/02

    CPC分类号： H04R19/01 ,  B06B1/0292

    摘要： According to the invention, an electret structure (1) is proposed which comprises an electrically conductive substrate (10), a first electret layer (30) and a porous dielectric layer (20), which is arranged between the substrate (10) and the first electret layer (30). The electrically conductive substrate (10) in this case preferably forms an electrode of the electret structure (1) according to the invention. The invention is based on the concept of using the porous dielectric layer (20) to separate the charged electret layer (30) from the electrode (10). As a result, the migration of electrical charges (50) out of the electret layer (30) towards the rear electrode (10) is impeded. Likewise, the migration of oppositely charged charge carriers (55) out of the rear electrode (10) into the electret layer (30) is impeded. The charge stability of an electret structure (10) according to the invention in comparison with conventional addons without a porous dielectric layer (20) between the electret layer (30) and the rear electrode (10) is thus markedly increased.

    VERFAHREN ZUR HERSTELLUNG EINES MEHRSCHICHTIGEN ELEKTRET-BAUTEILS
    3.
    发明公开
    VERFAHREN ZUR HERSTELLUNG EINES MEHRSCHICHTIGEN ELEKTRET-BAUTEILS 审中-公开

    公开(公告)号：EP3140840A1

    公开(公告)日：2017-03-15

    申请号：EP15709919.3

    申请日：2015-03-12

    申请人： Robert Bosch GmbH

    发明人： BARTYLLA, David ,  MAIER, Nicolas ,  HIRTH, Erhard

    IPC分类号： H01G7/02 ,  H04R19/01

    CPC分类号： H01G7/028 ,  H01G7/02 ,  H01G7/021 ,  H01G7/025 ,  H04R19/01

    摘要： The invention relates to a method for producing a multilayered electret structure (10) and to the electret structure (10), comprising the following steps: providing a carrier (12) with an electrode (14) composed of conductive material, applying a first electret layer (16) to the electrode (14), applying a second electret layer (18) to the first electret layer (16) in order to form the electret structure (10), charging a surface (20) or a near-surface volume region of the second electret layer (18) with charge carriers (22), and subjecting the multilayered electret structure (10) to a treatment, wherein the charge carriers (22) flow away into the volume of the second electret layer (18) and are retained in a boundary region between first electret layer (16) and second electret layer (18).

    摘要翻译： 本发明涉及一种制备多层驻极体结构（10）和驻极体结构（10）的方法，包括以下步骤：向载体（12）提供由导电材料构成的电极（14），施加第一驻极体 （16）到电极（14），向第一驻极体层（16）施加第二驻极体层（18）以形成驻极体结构（10），将表面（20）或近表面体积 （22）的第二驻极体层（18）的区域，并对多层驻极体结构（10）进行处理，其中电荷载流子（22）流入第二驻极体层（18）的体积，以及 被保留在第一驻极体层（16）和第二驻极体层（18）之间的边界区域中。