ELEKTRONISCHES BAUELEMENT
    37.
    发明公开
    ELEKTRONISCHES BAUELEMENT 审中-公开
    电子元件

    公开(公告)号:EP1078451A1

    公开(公告)日:2001-02-28

    申请号:EP99920557.8

    申请日:1999-03-25

    Applicant: EPCOS AG

    Abstract: The invention relates to a surface wave component and to a method for the production of the same, comprising a chip (2) with a piezoelectric substrate, electronic conductive structures arranged on said chip (IDT converters, contact strips and the like), a base plate (3) with external contact elements contacting the electric conductive structures of the chip and a hermetically sealed frame (4) mounted on the base plate, the chip being arranged inside and at a distance from said frame. The area between the chip (2) and the base plate (3) is sealed off with a foil (5), the area between the frame (4) and the foil (5) is filled with a sealing compound (6) and the chip (2) along with the sealing compound (6) and the frame (4) are protected by a cover (7) or a protective cap made of galvanic material, the edges (8) of which rest on the base plate (3) hermetically sealing the latter.

    ELEKTRONISCHES BAUELEMENT, INSBESONDERE MIT AKUSTISCHEN OBERFLÄCHENWELLEN ARBEITENDES BAUELEMENT - OFW-BAUELEMENT
    38.
    发明公开
    ELEKTRONISCHES BAUELEMENT, INSBESONDERE MIT AKUSTISCHEN OBERFLÄCHENWELLEN ARBEITENDES BAUELEMENT - OFW-BAUELEMENT 有权
    电子元件,特别是弹性表面波工作相关的部分 - SAW COMPONENT

    公开(公告)号:EP1057258A1

    公开(公告)日:2000-12-06

    申请号:EP99915480.0

    申请日:1999-02-16

    Applicant: EPCOS AG

    Abstract: The invention relates to an OFW component working with acoustic surface waves. Said component comprises a chip (1), a piezoelectric substrate (1a), electrically conductive structures (2, 3, 4) arranged on the substrate and a base plate (15) with external electrical connections lines which are in contact with the electrical conductive structures of the chip (1). A protective film (5, 6) is applied on the surface of the chip supporting the electrically conductive structures (2, 3, 4), which has electrical contact elements (7, 11) on the surface opposite to their piezoelectric substrate (1a). Said elements are connected directly to the structures (2, 3, 4) of the chip (1) by through contacts (8) in the protective film (5, 6) and/or through bumps (10) and to the electrical connection elements of the base plate (15) using SMT technology.

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