发明授权
- 专利标题: Laminated coil component and method of producing the same
- 专利标题(中): 层叠线圈部件及其制造方法
-
申请号: US10527036申请日: 2004-06-22
-
公开(公告)号: US07167070B2公开(公告)日: 2007-01-23
- 发明人: Hiroshi Tanaka , Takahiro Yamamoto , Hajime Arakawa
- 申请人: Hiroshi Tanaka , Takahiro Yamamoto , Hajime Arakawa
- 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: JP2003-309027 20030901
- 国际申请: PCT/JP2004/008753 WO 20040622
- 国际公布: WO2005/024863 WO 20050317
- 主分类号: H01F5/00
- IPC分类号: H01F5/00
摘要:
A laminated coil is constructed such that an inner space of each via hole can be increased while the spacing between adjacent via holes in the axial direction of a coil is prevented from being narrowed. In the via holes of the laminated coil, through-holes formed in ceramic layers and filled with a conductor are arranged in a row in the lamination direction X, and, in each of the through-holes, the difference between the diameter in the axial direction of the coil on the opening surface of one opening of a ceramic layer and the diameter in the axial direction of the coil on the opening surface of the other opening is smaller than the difference between the diameter in the direction Z that is substantially perpendicular to the axial direction Y of the coil on the opening surface of one opening of the ceramic layer and the diameter in the direction Z that is substantially perpendicular to the axial direction Y of the coil on the opening surface of the other opening.