Manufacturing method for substrate
AssigneeNgk Spark Plug Co., Ltd.
InventorYousuke MORITA
Life of this patent
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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.
Claims14
A method for 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 comprising:
- 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 the laser to create a second plurality of projections in parallel at equal intervals that do not overlap the first plurality of projections.
A method for 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 comprising:
- forming a first element of the identifying mark by irradiating the substrate with a laser to create a first plurality of protrusion lines in parallel at equal intervals including a plurality of sequential protrusion portions;
- and
- forming another element of the identifying mark by irradiating the substrate with the laser to create a second plurality of protrusion lines in parallel at equal intervals that do not overlap the first plurality of protrusion lines.
Dependencies are inferred from the claim text.