EMBEDDED CAVITY IN PRINTED CIRCUIT BOARD BY SOLDER MASK DAM
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United States of America
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Sep 21, 2017
app pub date -
Mar 31, 2016
filing date -
Mar 31, 2016
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Abstract
A PCB having multiple stacked layers laminated together. The laminated stack includes regular flow prepreg and includes an embedded cavity, the perimeter of which is formed by a photo definable, or photo imageable, polymer structure, such as a solder mask dam. The solder mask dam defines cavity dimensions and prevents prepreg resin flow into the cavity during lamination.
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