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    • 30. 发明申请
    • Piezoelectric transducer
    • 压电式换能器
    • US20050134574A1
    • 2005-06-23
    • US10739471
    • 2003-12-18
    • Nicholas Hill
    • Nicholas Hill
    • G06F3/033G06F3/041H01L41/113H04R17/00G09G5/00
    • H01L41/1132G06F3/041H04R17/00
    • The present invention provides a piezoelectric transducer that includes at least two poled piezoelectric regions disposed in a side-by-side arrangement and connected in series with the poling directions reversed through the series connection, meaning that the “north pole” of one region is connected to the “south pole” of an adjacent region. The at least two regions can be within the same piece of piezoelectric material, or can be separate pieces of piezoelectric material. Transducers of the present invention may be particularly suited to detecting vibrations such as bending waves in a plate. For example, transducers of the present invention may be affixed to a surface of a plate and used to detect vibrations caused by or affected by touches to the plate to determine information related to the touches, such a touch position.
    • 本发明提供了一种压电换能器,其包括并排配置的至少两个极化压电区域,并且与通过串联连接反向的极化方向串联连接,意味着一个区域的“北极”连接 到邻近地区的“南极”。 至少两个区域可以在相同的压电材料片内,或者可以是分离的压电材料片。 本发明的传感器可以特别适合于检测板中的弯曲波等振动。 例如,本发明的换能器可以固定在板的表面上,并且用于检测由板触摸引起的或受其影响的振动,以确定与触摸有关的信息,例如触摸位置。