Plated Through Hole Void Detection in Printed Circuit Boards by Detecting A pH-Sensitive Component

An approach is provided in which a pH-indicating compound is incorporated in a printed circuit board. The printed circuit board includes a number of layers with the pH-sensitive indicator being incorporated in one of the layers. Conductive pathways are formed from a conductive sheet laminated onto a...

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Bibliographische Detailangaben
Hauptverfasser: CHAMBERLIN BRUCE JOHN, TSANG KASPAR KA CHUNG, KUCZYNSKI JOSEPH, HU GAO-BIN, CHU CHANG-MIN
Format: Patent
Sprache:eng
Schlagworte:
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