发明申请
- 专利标题： PIEZOELECTRIC ELEMENT AND METHOD FOR MANUFACTURING THE SAME, LIQUID-EJECTING HEAD AND METHOD FOR MANUFACTURING THE SAME, AND LIQUID-EJECTING APPARATUS
- 专利标题（中）： 压电元件及其制造方法，液体喷射头及其制造方法和液体喷射装置
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申请号： US12611823申请日： 2009-11-03
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公开(公告)号： US20100110148A1公开(公告)日： 2010-05-06
- 发明人: Akira Kuriki , Koji Sumi , Tatsuo Sawasaki , Tatsuro Torimoto , Motoki Takabe
- 申请人： Akira Kuriki , Koji Sumi , Tatsuo Sawasaki , Tatsuro Torimoto , Motoki Takabe
- 申请人地址： JP Shinjuku-ku
- 专利权人： SEIKO EPSON CORPORATION
- 当前专利权人： SEIKO EPSON CORPORATION
- 当前专利权人地址： JP Shinjuku-ku
- 优先权： JP2008-283372 20081104; JP2009-214140 20090916
- 主分类号： B41J2/045
- IPC分类号： B41J2/045 ; H01L41/16 ; H04R17/00
摘要：
A piezoelectric element includes a piezoelectric film containing lead (Pb), zirconium (Zr), and titanium (Ti). The piezoelectric film has a composition satisfying the relationship of Zr/(Ti+Zr)>Ti/(Ti+Zr) and has a polarization-electric field hysteresis loop having a Pm/2Pr of 1.95 or more and a Vc(−) of −1.75 V or more, wherein Pm denotes saturation polarization, Pr denotes remanent polarization, and Vc(−) denotes a negative coercive electric field intensity.
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