发明授权
- 专利标题: Piezoelectric film
-
申请号: US17553804申请日: 2021-12-17
-
公开(公告)号: US11910719B2公开(公告)日: 2024-02-20
- 发明人: Shingo Fujikata
- 申请人: FUJIFILM Corporation
- 申请人地址: JP Tokyo
- 专利权人: FUJIFILM Corporation
- 当前专利权人: FUJIFILM Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: JCIPRNET
- 优先权: JP 19121704 2019.06.28
- 主分类号: H04R25/00
- IPC分类号: H04R25/00 ; H10N30/85 ; H04R17/00
摘要:
Provided is a piezoelectric film capable of realizing a piezoelectric speaker in which a high sound pressure is obtained, a sufficient sound pressure characteristic is obtained in a wide frequency band, and generation of a chattering sound particularly in a low sound can be suppressed. The piezoelectric film is a piezoelectric film including a polymer-based piezoelectric composite material which contains piezoelectric particles in a matrix containing a polymer material, and electrode layers which are laminated on both surfaces of the polymer-based piezoelectric composite material, in which a variation coefficient of a destructive force of a laminate having the polymer-based piezoelectric composite material and the electrode layers in a plane direction is 0.25 or less.
公开/授权文献
- US20220109098A1 PIEZOELECTRIC FILM 公开/授权日:2022-04-07
信息查询