| 摘要 |
In a first step, a first substrate is prepared. The first substrate has a first surface, a second surface, and a through-hole therebetween. In a second step, a second substrate is prepared. The second substrate has a first surface, a second surface, and a pad on the first surface of the second substrate. In a third step, a solder is provided on the pad of the second substrate. In a fourth step, the through-hole of the first substrate is positioned on the solder. The second surface of the first substrate and the first surface of the second substrate face each other. In a fifth step, the solder is heated to flow the solder into the through-hole of the first substrate. In the sixth step, an appearance of the solder on the first surface of the first substrate may be confirmed for detection of a connection of the solder. |
