发明授权
- 专利标题： Crystal unit
- 专利标题（中）： 水晶单位
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申请号： US12383880申请日： 2009-03-30
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公开(公告)号： US07939768B2公开(公告)日： 2011-05-10
- 发明人: Kouichi Hara , Shigeru Obara
- 申请人： Kouichi Hara , Shigeru Obara
- 申请人地址： JP Tokyo
- 专利权人： Nihon Dempa Kogyo Co., Ltd.
- 当前专利权人： Nihon Dempa Kogyo Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Carrier Blackman & Associates, P.C.
- 代理商 Joseph P. Carrier; William D. Blackman
- 优先权： JP2008-095800 20080402
- 主分类号： H01L23/02
- IPC分类号： H01L23/02 ; H05K5/06
摘要：
A crystal unit includes a unit base in which a metal flange is welded to an outer circumference of a base main body, a crystal element held by supporters on the unit base, and a metal cover that is jointed to the metal flange to cover and hermetically encapsulate the crystal element. The base main body is formed of ceramic. A first metal film, to which the metal flange is joined, is formed on a surface of the outer circumference of the base main body. At least two places of the main body, second metal films are formed on an inner bottom face of the main body, and third metal films are formed on an outer bottom face of the main body. The second metal films and the third metal films are electrically connected to one another through via holes. The supporters are joined to the second metal films.
公开/授权文献
- US20090252983A1 Crystal unit 公开/授权日：2009-10-08
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