发明名称 Coupler array to measure conductor layer misalignment
摘要 Systems and methods are presented for employing arrays of coupling strips to measure misalignment of layers of multilayer devices as a function of directional coupling between pairs of strips. Each array is capable of detecting misalignment only in the direction perpendicular to the axes of the coupling strips, although multiple arrays may be employed for measuring misalignment in more than one direction. Such arrays are easily manufactured onto existing multilayer devices, and may be excised from such devices after misalignment has been measured.
申请公布号 US6647311(B1) 申请公布日期 2003.11.11
申请号 US19990442587 申请日期 1999.11.18
申请人 RAYTHEON COMPANY 发明人 GOFF MILES E.
分类号 H01L23/544;H05K1/02;H05K1/16;H05K3/46;(IPC1-7):G06F19/00 主分类号 H01L23/544
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