| 摘要 |
A circuit board (10) comprises: a substrate (100) having aperture parts(R10); a plurality of electronic devices (200a, 200b) which are positioned in one of the aperture parts (R10); insulation layers (101, 102) which are positioned upon the substrate (100) and the electronic devices (200a, 200b); and conductive layers (110, 120) which are positioned upon the insulation layers (101, 102). Protrusions (P21, P22) are formed on wall faces of the aperture parts (R10). On at least one site, leading ends of the protrusions (P21, P22) extend between adjacent electronic devices (200a, 200b). |
