To solve the problem wherein connection between liquid crystal cells and driver ICs in a liquid crystal display apparatus cannot be inspected without energization to the apparatus.
A large number of capacitive circuit elements are connected in parallel and aligned on an insulating substrate 12, and conductive patterns 18 are connected to one ends of the circuit elements in a circuit board 10. Leads 28a of an electronic component 24 are electrically connected to the conductive patterns 18 of the circuit board 10 via a conductive adhesive 22 in electrical connection parts. A high-frequency field generating means and a pickup coil 34 for inspection are brought close to the electrical connection parts. On the basis of changes in a high-frequency current passing through the pickup coil 34, the quality of connection of the electrical connection parts is determined.
COPYRIGHT: (C)2005,JPO&NCIPI
Takehiko Wada
Kojima Eisaku
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Ken Masuda