| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed wiring board with superior bonding strength, especially for bonding strength between a solder ball connecting terminal and a supporting insulating board. SOLUTION: A round or polygonal patch-shaped connecting terminal for a solder ball has at least one projected part or one cut part on the edge thereof in the printed wiring board. Alternatively, the printed wiring board has at least one projected or recessed part in the thickness direction thereof.
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