MANUFACTURING METHOD FOR SUBSTRATE
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United States of America Patent
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Issued Date -
Jun 26, 2014
app pub date -
Dec 20, 2013
filing date -
Dec 21, 2012
priority date (Note) -
Abandoned
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Abstract
A method for manufacturing a substrate includes manufacturing a substrate with an identifying mark having a plurality of elements, the substrate having a laminated construction including a plurality of resin insulating layers. The method includes the steps of: forming a first element of the identifying mark by irradiating the substrate with a laser to create a first plurality of projections in parallel at equal intervals; and forming another element of the identifying mark by irradiating the substrate with a laser to create a second plurality of projections in parallel at equal intervals that do not overlap the first plurality of projections.
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