发明授权
- 专利标题： Monolithic ceramic electronic component and method for making the same
- 专利标题（中）： 单片陶瓷电子元件及其制作方法
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申请号： US10526409申请日： 2004-08-31
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公开(公告)号： US07251120B2公开(公告)日： 2007-07-31
- 发明人: Tomoo Takazawa
- 申请人： Tomoo Takazawa
- 申请人地址： JP Kyoto
- 专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人地址： JP Kyoto
- 代理机构： Keating & Bennett, LLP
- 优先权： JP2003-341438 20030930
- 国际申请： PCT/JP2004/012546 WO 20040831
- 国际公布： WO2005/034151 WO 20050414
- 主分类号： H01G4/06
- IPC分类号： H01G4/06
摘要：
A monolithic ceramic electronic component includes a low-permeability coil portion formed by stacking low-permeability ceramic green sheets, a first coil and a relatively large number of pores, and a high-permeability coil portion formed by stacking high-permeability ceramic green sheets, a second coil and a relatively small number of pores. The first coil and the second coil are electrically connected in series to form a spiral coil. The coil portion composed of a ferrite ceramic having a small number of pores has a high permeability and a high dielectric constant, and the coil portion composed of a ferrite ceramic having a large number of pores has a low permeability and a low dielectric constant.
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