Shield package and method of manufacturing shield package
The present invention provides a shield package having a highly distinctive pattern formed on a surface of a shield layer. The shield package of the present invention includes a package in which an electronic component is sealed with a resin layer, and a shield layer covering the package, wherein a surface of the resin layer includes a drawing area drawn with lines and/or dots by aggregation of multiple grooves, and a non-drawing area other than the drawing area, multiple depressions originating from the grooves are formed on a surface of the shield layer on the drawing area, and the depressions are aggregated to draw a pattern with lines and/or dots.
1. An individualized shield package comprising:
an individual electronic package in which an electronic component is sealed with a resin layer; and
a shield layer covering the individual electronic package,
wherein a major surface of the resin layer includes a drawing area drawn with hatching formed by an aggregation of multiple linear, parallel grooves to form a product-identifying pattern, and a non-drawing area other than the drawing area,
multiple depressions originating from the grooves are formed on regions of an outer, major surface of the shield layer overlying the drawing area, and
the depressions are aggregated to form a product-identifying representation of the product-identifying pattern on the outer, major surface of the shield layer.
2. The shield package according to claim 1 , wherein the grooves adjacent to each other are arranged at an interval of 10 to 100 μm.
3. The shield package according to claim 1 , wherein at least some of the multiple grooves are formed in a grid shape.
4. The shield package according to claim 3 , wherein each cell of the grid formed by the grooves has a width of 10 to 100 μm.
5. The shield package according to claim 1 , wherein each groove has a width of 5 to 100 μm.
6. The shield package according to claim 1 , wherein each groove has a depth of 5 μm or more.
7. The shield package according to claim 1 , wherein the pattern is a two-dimensional code.
8. A method of producing an individualized shield package including an individual electronic package in which an electronic component is sealed with a resin layer, and a shield layer covering the package, the method comprising:
a package preparing step of preparing a package in which an electronic component is sealed with a resin layer;
a drawing area forming step of forming hatching from an aggregation of multiple linear, parallel grooves by applying a laser beam to a major surface of the resin layer in such a manner that the grooves are aggregated to form a product-identifying pattern; and
a shield layer forming step of applying a conductive coating material to the major surface of the resin layer to form a shield layer,
wherein the shield layer forming step includes forming depressions originating from the grooves on regions of an outer major surface of the shield layer in such a manner that the depressions are aggregated to form a representation of the product-identifying pattern on the outer, major surface of the shield layer.