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    • 6. 发明公开
    • BAUELEMENT MIT EINER MIKROMECHANISCHEN MIKROFONSTRUKTUR UND VERFAHREN ZU DESSEN HERSTELLUNG
    • EP2522153A1
    • 2012-11-14
    • EP10781632.4
    • 2010-11-05
    • Robert Bosch GmbH
    • ZOELLIN, JochenGROSSE, AxelGEHL, Bernhard
    • H04R19/00
    • H04R19/005
    • The invention relates to measures for improving the acoustic properties of a microphone component produced in sacrificial layer technology. According to the invention, the micromechanical microphone structure of such a component (10) is implemented in a layer structure and comprises at least one membrane which can be deflected by sound pressure and which is implemented in a membrane layer and a fixed, acoustically permeable counter-element (12) for the membrane which is implemented in a thick function layer over the membrane layer and has passage openings (13) for sound induction. According to the invention, the passage openings (13) are arranged over the center region of the membrane for sound induction, whereas acoustic, extensively passive perforation openings (14) are designed in the counter-element (12) over the edge region of the membrane.
    • 本发明涉及用于改善牺牲层技术中产生的麦克风组件的声学特性的措施。 根据本发明,这种部件(10)的微机械麦克风结构以层结构实现并且包括至少一个可以通过声压偏转并且在膜层和固定的声学可渗透的计数器中实现的膜 - 用于膜的元件(12),其在膜层上的厚功能层中实施并且具有用于声音感应的通道开口(13)。 根据本发明,通道开口(13)布置在隔膜的中心区域上以用于声音感应,而声学的,大量无源的穿孔(14)被设计在配对元件(12) 膜。