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Abstract:
Adopting
line-structured laser sensor, successfully applies the visual inspection
to the grid array device coplanarity measurement. With the mathematics
model put forward, the evaluating method based on the three-point
seating plane is presented, and corresponding experimental studies on
the BGA chip coplanarity are carried out, which achieve satisfactory
results.
Key words:
Grid array
device Coplanarity Three-point seating plane method
CLC No: TH7
国家自然科学基金资助项目. Received 20000606, received in revised form 20001113
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