| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit board testing device which can test effectively and stably in an electric continuity of a wiring formed on the circuit board by utilizing an electron generated by a photoelectric effect. SOLUTION: When a wiring to be inspected is the electric continuity, by application of a voltage to a ball grid 121b of the wiring 121 to be inspected and a plate electrode 51, an electric field is generated between a pad part 121a of the wiring 121 to be inspected and the plate electrode 51. The electron emitted from the pad part 121a of the wiring 121 to be inspected by the photoelectric effect due to an electromagnetic irradiation is attracted by the electric field into the plate electrode 51 side. According to this, the electric continuity path which returns from a power source 80 to the power source 80 via the plate electrode 51 and the wiring 121 to be inspected is formed. The electric continuity of the wiring 121 to be inspected can be inspected by measuring a current flowing through the wiring 121 to be inspected. COPYRIGHT: (C)2006,JPO&NCIPI
|
