Device and method for inspecting circuit board
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 6, 2005
Grant Date -
Nov 7, 2002
app pub date -
Jun 13, 2001
filing date -
Jun 16, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides an inspection apparatus and an inspection method capable of inspecting at a high speed by using a sensor having flexibility and excellent productivity. When a circuit board 100 as a subject of inspection is selected, CAD data of the circuit wiring 101 on this circuit board 100 is analyzed to detect the position of the end of each wiring. Then, two or more sensor elements adjacent to the end (from which the voltage variation can be detected) are specified. The switching circuit 16 is controlled to connect the selected sensor elements to an output terminal 12 and to connect the remaining sensor elements to the GND terminal 15. In this state, when an voltage is applied to one of the selected circuit wirings and then an inspection signal (voltage variation) is output from the output terminal 12, it will be determined that no disconnection exists in the circuit wiring.
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