| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-piece substrate and manufacturing method thereof, where, even if pieces are patched, a patched part is flash with other pieces and strength at a joint part is prevented from degrading. SOLUTION: Related to a mixed board containing a defective piece and a nondefective piece where an outermost layer pattern is not formed, a bridge 8 is provided with a cut line, and the cut lines are jointed together with an adhesive. Then an upper layer is further laminated to provide a multi-piece substrate 1 which contains only nondefective pieces. Although a joint line 9 is present at the bridge 8, the joint line 9 is well jointed using the adhesive and further is well covered with the upper layer. So, degradation of the strength of the bridge 8 due to patching is prevented. Thus, such multi-piece substrate is provided together with its manufacturing method, as no patched piece 3 accidentally drops at handling in a post process.
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