| 摘要 |
PROBLEM TO BE SOLVED: To provide a board assembly in which a cost is not increased, an attachment operation is easy and a high reliability of a terminal joining part is obtained. SOLUTION: A first printed wiring board (50F) having a first land (12a) and a plurality of holes (13) is integrated with a second printed wiring board (50R) having a second land (2a) and a plurality of chips (3), by electrically connecting the first land (12a) to the second land (2a). At least two of the plurality of holes (13) are fitted into two of the plurality of chips, and the side face (3h) or the corner (3a) of the side of the fitted chips is abutted on or almost abutted on an inner face of the opposing hole. A location of the first printed board for the second printed board is controlled in two directions (D1, D2) (S1, S2) which are mutually opposite directions along a surface of the first printed board. COPYRIGHT: (C)2006,JPO&NCIPI
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