发明名称 |
Accurate drilling of probe holes in the insulating plate of an electrical test head |
摘要 |
A method for manufacturing insulating plates with accurately located holes in patterns suitable for bed of nails type test heads. An optically aligned drilling machine is used to form holes in the insulating plate conforming to the test pattern by using a reference pattern photolithographically formed onto the insulating plate. The photolithographic formation provides a pattern of greater accuracy and maintains that accentuated degree of accuracy through camera alignment and fixed offset between commonly mounted camera and drill. The tighter registration of copper features in advanced printed circuit boards subject to testing with the bed of nails test heads require insulating plates hole patterns with the accentuated accuracy provided by the method.
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申请公布号 |
US5736279(A) |
申请公布日期 |
1998.04.07 |
申请号 |
US19960746063 |
申请日期 |
1996.11.06 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MOTT, GARY DAMON;ROMONOSKY, RONALD;WILHITE, DALE WAYNE |
分类号 |
G01R1/073;G01R3/00;(IPC1-7):G06F9/00;G01R15/12 |
主分类号 |
G01R1/073 |
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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