| 摘要 |
A wiring board with a built-in imaging element including a substrate having an accommodation portion, an imaging device having a light receiver and positioned in the accommodation portion such that the light receiver faces a first surface of the substrate, first insulation layers having an opening portion and formed on the first surface of the substrate such that the light receiver is exposed from the opening portion, and second insulation layers formed on a second surface of the substrate. The first insulation layers include a first insulation layer, the second insulation layers include a second insulation layer, the second insulation layer is positioned at a predetermined tier and has a thermal expansion coefficient which is set lower than that of the first insulation layer at a predetermined tier such that imbalance in thermal expansion and contraction between the first and second insulation layers is substantially offset or mitigated.
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