Circuit board misalignment detection apparatus and method
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United States of America Patent
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-
Mar 5, 2002
Grant Date -
Jan 31, 2002
app pub date -
May 13, 1998
filing date -
May 13, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Position detection electrodes are disposed so as to be point-symmetrical relative to an arbitrary point on a line X that extends almost along the center of a printed pattern on an opposite circuit board and is parallel with the Y axis. Position detector electrodes are disposed in the same manner. A probe selector switch section can provide a probe selection signal, and a position detector sensor selection which section can provide a signal for selecting among the position detection electrodes. A detected voltage varies depending on how the position detection electrode is opposed to a printed pattern. Thus, misalignment can be detected by detecting the opposition relationship between each of the position detection electrodes and the printed pattern.
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