| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed circuit board inspection method capable of preventing wrong determination. SOLUTION: When a disconnection on wiring 7 is produced near a back terminal 4 of the wiring 7 for connecting electrically the front and the back of the printed circuit board 5, the disconnection can not be detected hitherto, because a measuring needle 15 can not be brought into contact with the back terminal 4. On this account, a metal stage 19 is connected to the back terminal 4. When inspecting the wiring 7, the measuring needle 15 is brought into contact with a surface terminal 3 of the wiring 7. When the disconnection on the wiring 7 is generated near the back terminal 4, the electric capacity to be measured is approximately equal to a combined electric capacity of an electric capacity C3 and an electric capacity C4, but is smaller than an expected value as much as an electric capacity C5 between the stage 19 and a counter electrode 11, and hereby generation of the disconnection can be detected. COPYRIGHT: (C)2003,JPO
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