| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiring board or the like, in which a connection between a lead terminal of an electronic component and a connection conductor in a connection hole can be performed easily and reliably.SOLUTION: A wiring board 5 or the like includes: an insulation substrate 1 having a main surface including a connection hole 2 for lead terminal connection; and a connection conductor 3 provided to an inner side face of the connection hole 2. The inner side face of the connection hole 2 has a projecting portion 2a projecting more to an inner side than other portions at a part of the inner side face in a length direction, and the connection conductor 3 is arranged to a tip surface of the projecting portion 2a. The connection conductor 3 is located on the innermost side in the connection hole 2, so that a lead terminal can be easily connected to the connection conductor 3.SELECTED DRAWING: Figure 1 |
