Patent ID: 6534968
Filing Date: 2003-03-18
Classification: G01R,H05K

Abstract:
An apparatus for detecting failures in electrical connections between an integrated circuit package substrate and a circuit board, comprising:the substrate having substrate electrical contacts, the substrate electrical contacts electrically connected one to another in first sets in a first region of the substrate, the circuit board having circuit board electrical contacts, the circuit board electrical contacts electrically connected one to another in second sets in a second region of the circuit board, the substrate electrical contacts for aligning with and making electrical connection with the circuit board electrical contacts, the first region of the substrate aligning with the second region of the circuit board when the substrate electrical contacts make electrical connection with the circuit board electrical contacts, and the first sets of substrate electrical contacts forming chains of electrical contacts with the second sets of circuit board electrical contacts, where the chains of electrical contacts loop back and forth electrically between the substrate and the circuit board.