| 摘要 |
A wiring substrate includes a first insulating layer formed as an outermost layer on one surface side, and exhibiting a black color or a gray color, a first connection pad formed to expose from the first insulating layer, a second insulating layer formed as an outermost layer on another surface side, and exhibiting a black color or a gray color, and a second connection pad formed to expose from the second insulating layer, wherein a connection hole having a side wall surface formed like a curved surface is formed in the second insulating layer, and the second connection pad is exposed to a bottom part of the connection hole.
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