| 摘要 |
According to one embodiment, a plurality of bumps are formed by repeatedly applying conductive paste to the conductive pattern portion, a plurality of bump-guiding openings are provided in the cover layer to align with the plurality of bumps, a plurality of crushed portions are formed by crushing heads of the plurality of bumps protruding from the cover layer through the bump-guiding openings, and a ground layer is formed on the cover layer. The ground layer is electrically connected to the plurality of crushed portions.
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