发明名称 |
Flexible polyimide circuits having predetermined via angles |
摘要 |
A flexible circuit having a polyimide substrate containing at least one chemically etched feature, wherein such etched feature has sidewalls having a predetermined slope angle. It is possible to create etched features having predetermined slopes of from about 10 to about 70 degrees. Preferably, the flexible circuit was formed from a polyamic acid containing multiple ester groups in its main polymer chain.
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申请公布号 |
US2003001237(A1) |
申请公布日期 |
2003.01.02 |
申请号 |
US20010874647 |
申请日期 |
2001.06.05 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
YANG RUI |
分类号 |
H05K3/42;H05K1/00;H05K1/03;H05K3/00;(IPC1-7):H01L29/06 |
主分类号 |
H05K3/42 |
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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