发明申请
- 专利标题: Bump Structure With Multiple Layers And Method Of Manufacture
- 专利标题(中): 具有多层的凸块结构和制造方法
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申请号: US12738635申请日: 2008-10-17
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公开(公告)号: US20100206602A1公开(公告)日: 2010-08-19
- 发明人: Sang Chul Lee , Sung-Wook Kim
- 申请人: Sang Chul Lee , Sung-Wook Kim
- 申请人地址: KR Gyeonngi-do
- 专利权人: BARUN ELECTRONICS CO., LTD.
- 当前专利权人: BARUN ELECTRONICS CO., LTD.
- 当前专利权人地址: KR Gyeonngi-do
- 优先权: KR10-2007-0105661 20071019
- 国际申请: PCT/KR08/06149 WO 20081017
- 主分类号: H05K5/06
- IPC分类号: H05K5/06 ; H05K3/00
摘要:
A bump structure with multiple layers may include a first layer electrically connected to a protective substrate hermetically packaging a base substrate, the first layer allowing the base substrate and the protective substrate to be spaced apart from each other at a predetermined distance; and a second layer electrically connected to the first layer, the second layer being eutectically bonded on a surface of the base substrate. The first layer may have a melting point higher than a eutectic temperature of the second layer and the base substrate. When using a bump structure with multiple layers, it is possible to secure a space in which a micro-structure such as a microelectromechanical systems (MEMS) device on a base substrate may be driven. Further, it is possible to prevent a contact between adjacent structures or electrodes from being generated due to diffusion of a bonding material in a hermetical packaging process.
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