发明授权
- 专利标题: Piezoelectric vibration transducer
- 专利标题(中): 压电式振动传感器
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申请号: US434713申请日: 1982-10-15
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公开(公告)号: US4424465A公开(公告)日: 1984-01-03
- 发明人: Hiroji Ohigashi , Toshiharu Nakanishi , Miyo Suzuki
- 申请人: Hiroji Ohigashi , Toshiharu Nakanishi , Miyo Suzuki
- 申请人地址: JPX Tokyo
- 专利权人: Toray Industries, Inc.
- 当前专利权人: Toray Industries, Inc.
- 当前专利权人地址: JPX Tokyo
- 主分类号: B06B1/06
- IPC分类号: B06B1/06 ; H01L41/09 ; H01L41/08
摘要:
A piezoelectric vibration transducer is disclosed which includes a polymeric piezoelectric film as the active element. The film is a selectively or fully polarized, uniaxially oriented material selected from the group of polyvinylidene fluoride, blended material such as polyvinylidene fluoride and PZT powder, polyvinyl fluoride, polyacrylonitrile, copolymers or vinylidene fluoride such as vinylidene fluoride and tetrafluoroethylene or trifluoroethylene. The film is bonded to electrode strips formed by printed circuit methods and then overcoated with a front electrode layer. The sandwich formed by the electrode layers and intermediate polymeric piezoelectric film can be reversed so that the front electrode layer is discontinuous while the back electrode layer is continuous, or both electrode layers can be formed to be discontinuous. Special configurations for the discontinuous pattern of electrode layers can be employed such as that specified by Fresnel's theory.
公开/授权文献
- US5542397A Leak test system for vaporized fuel treatment mechanism 公开/授权日:1996-08-06
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