| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a connecting section, especially width of it, between circuit boards. SOLUTION: A first circuit board 11 and a second circuit board 12 are connected by a first connecting section C1, the first circuit board 11 and a third circuit board 13 are connected by a second connecting section C2, and these first connecting section C1 and the second connecting section C2 are respectively arranged on the two sides near to one end of the first rectangular circuit board 11. Dividing the connection of the first circuit board 11 and the second circuit board 12 into two opposite faces allow the width of the connecting section C1 and C2 to be miniaturized. A third connecting section C3 for connecting the second circuit board 12 and the thirds circuit board 13 is arranged in the vicinity of proximal section of the first connecting section C1 and the second connecting section C2.
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