发明名称 |
Low-temperature fired ceramic circuit substrate with improved Ag-Au connection reliability |
摘要 |
A low-temperature fired ceramic circuit substrate includes a plurality of laminated insulating layers each formed of a low-temperature fired ceramic fired at a temperature ranging between 800 and 1,000 DEG C., an inside layer wiring conductor formed of a conductive material of Ag system which is mainly composed of Ag, the inside layer wiring conductor being disposed in the inside insulating layer, a surface layer wiring conductor formed of a conductive material of Au system which is mainly composed of Au, the surface layer wiring conductor being disposed on the surface insulating layer, and an intermediate metal layer formed of a thick film paste of a conductive material of Au/Ag system which is mainly composed of Au/Ag, the intermediate metal layer being interposed between the inside layer wiring conductor and the surface layer wiring conductor. |
申请公布号 |
US5847326(A) |
申请公布日期 |
1998.12.08 |
申请号 |
US19970808019 |
申请日期 |
1997.03.03 |
申请人 |
SUMITOMO METAL ELECTRONICS DEVICES INC. |
发明人 |
KAWAKAMI, KATSUYA;FUKUTA, JUNZO |
分类号 |
H05K1/09;H01L21/48;H01L23/498;H01L23/538;H05K1/03;H05K3/24;H05K3/40;H05K3/46;(IPC1-7):H05K1/02 |
主分类号 |
H05K1/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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