| 摘要 |
PROBLEM TO BE SOLVED: To attain miniaturization of a solder terminal part structure without decreasing soldering strength, by forming an external shape of a solder terminal part, soldered to a soldering pad of a rigid printed board, in a corrugated shape. SOLUTION: In one end side of a flexible printed board, a solder terminal part 61 of corrugated external shape is formed. Peripheral dimension of the solder terminal part 61 is lengthened, a solder fillet amount, formed along a periphery of the solder terminal part 61, can be increased. On a soldering pad formed in one rigid printed board, the solder terminal part 61 juxtaposed in a flexible printed board 6 is overlapped together, when soldering is performed, fused solder is turned around in a side surface of the solder terminal part 61, along its contour, a corrugated solder fillet is formed, the rigid printed board and one end face of the flexible printed board 6 are connected by a solder fillet. |
