Advanced treated electrodeposited copper foil having long and island-shaped structures and copper clad laminate using the same
AssigneeCo-Tech Development Corp.
InventorsYUN-HSING SUNG, SHIH-SHEN LEE, HUNG-WEI HSU, CHUN-YU KAO
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Abstract
An advanced electrodeposited copper foil having long and island-shaped microstructures and a copper clad laminate using the same are provided. The advanced electrodeposited copper foil includes a micro-roughened surface. The micro-roughened surface has a plurality of copper crystals, a plurality of copper whiskers and a plurality of copper crystal groups which are in a non-uniform distribution and form into a long and island-shaped pattern.
Claims18
An advanced electrodeposited copper foil having long and island-shaped microstructures, characterized by including a micro-roughened surface, wherein the micro-roughened surface has a plurality of copper crystals that are in a non-uniform distribution;
- wherein different quantities of the copper crystals are stacked together to form respective copper whiskers, and different quantities of the copper whiskers are grouped together to form respective copper crystal groups;
- wherein as observed by a scanning electron microscope operated with a +35 degrees tilt and under 10000× magnification, the micro-roughened surface has at least ten first smooth areas each having a length of 250 nm and a width of 250 nm, at least one second smooth area having a length of 500 nm and a width of 500 nm, and at least one long and island-shaped microstructure having a length of 1500 nm.
A copper clad laminate, comprising:
- a substrate;
- and
- an advanced electrodeposited copper foil disposed on the substrate and having a micro-roughened surface that is bonded to a surface of the substrate, wherein the micro-roughened surface has a plurality of copper crystals that are in a non-uniform distribution;
- wherein different quantities of the copper crystals are stacked together to form respective copper whiskers, and different quantities of the copper whiskers are grouped together to form respective copper crystal groups;
- wherein as observed by a scanning electron microscope operated with a +35 degrees tilt and under 10000× magnification, the micro-roughened surface has at least ten first smooth areas each having a length of 250 nm and a width of 250 nm, at least one second smooth area having a length of 500 nm and a width of 500 nm, and at least one long and island-shaped microstructure having a length of 1500 nm.
Dependencies are inferred from the claim text.