| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit board for accurately connecting a flexible printed circuit board by soldering. SOLUTION: The width and length of a conductor pattern 5 of a drive circuit board 1 are composed to be wider than the gap of the conductor pattern 5 and longer than the length of a conductor pattern 6 of the flexible printed circuit board 2, respectively, thus forming an exposed part 5a by exposing the base part of the conductor pattern 5 by a specific amount and allowing surplus solder that is melted by soldering to escape to the exposed part 5a.
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