Bow control in an electronic package
AssigneeMicron Technology, Inc.
InventorsLee Choon Kuan, Lee Kian Chai
Life of this patent
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Abstract
A package including a package substrate, a die-substrate assembly including a substrate including a plurality of layers including a layer having a mesh to stiffen the substrate adapted to mount one or more dice, one or more dice mounted on the substrate and a molding compound to attach the substrate to the package substrate. Various embodiments include a method comprising providing a substrate including a layer having an outer surface, depositing a metal layer on the outer surface, and etching the metal layer to form an opening, the opening enclosing an area on the outer surface to mount one or more dice.
Claims22
A method comprising:
- providing a substrate including a layer having an outer surface;
- depositing a metal stiffening layer on the outer surface;
- etching the metal stiffening layer to form an opening, the opening enclosing an area on the outer surface to mount one or more dice;
- and
- etching the metal stiffening layer to form a mesh having a plurality of mesh openings therethrough.
A method comprising:
- providing a substrate including a layer having an exposed surface;
- depositing a metal stiffening layer on the exposed surface;
- etching the metal stiffening layer to form an opening having an annular shape, the opening enclosing an area on the exposed surface, the enclosed area adapted to mount one or more dice;
- and
- etching the metal stiffening layer to form a mesh having a plurality of mesh openings therethrough.
A method comprising:
- providing a substrate including a layer having an exposed surface;
- depositing a metal stiffening layer on the exposed surface, wherein the depositing includes depositing one of copper, gold, or aluminum;
- etching the metal stiffening layer to form an opening having an annular shape, the opening enclosing an area on the exposed surface, the enclosed area adapted to mount one or more dice;
- and
- etching the metal stiffening layer to form a mesh having a plurality of mesh openings therethrough, wherein the mesh openings have a shape including one of a substantially rectangular, substantially square, substantially triangular, substantially elliptical, or substantially circular shape.
Dependencies are inferred from the claim text.