Metal pattern structure having positioning layer
A metal pattern structure having a positioning layer thereon is provided. The positioning layer is located within a predetermined region of the metal pattern structure and located directly on the surface of a metal layer of the metal pattern structure.
1. A metal pattern structure having a positioning layer, the metal pattern structure comprising:
a metal pattern having a first metal layer and a second metal layer located on the first metal layer, wherein the second metal layer covers sidewalls of the first metal layer and the second metal layer comprises nickel;
an organic protection layer attached to the surface of the second metal layer and having a predetermined region, wherein the organic protection layer covers the surface of the second metal layer except for the predetermined region, the second metal layer is exposed by the predetermined region, and a material of the organic protection layer is thiol compound; and
a positioning layer located and confined within the predetermined region and located directly on the surface of the second metal layer exposed by the predetermined region, wherein the positioning layer is a gold layer capable of positioning a solder paste thereon.
2. The metal pattern structure of claim 1 , wherein the first metal layer comprises a copper layer.
3. The metal pattern structure of claim 1 , wherein the first metal layer is a copper pattern formed by copper or copper alloy having a thickness of 6-20 microns, and the second metal layer is a nickel pattern having a thickness of 3-8 microns.
4. The metal pattern structure of claim 1 , wherein the metal pattern comprises an antenna structure.
5. The metal pattern structure of claim 1 , further comprising at least one passive component fixed on the positioning layer.
6. The metal pattern structure of claim 5 , further comprising a solder paste located on the positioning layer and between the passive component and the positioning layer thereby fixing the passive component to the positioning layer.
7. The metal pattern structure of claim 5 , wherein the passive component includes a capacitor, a resistor or an inductor.
8. The metal pattern structure of claim 1 , wherein the thickness of the first metal layer is larger than the thickness of the second metal layer.
9. The metal pattern structure of claim 1 , wherein the first metal layer is partially embedded and the second metal layer covers sidewalls and the top surface of a non-embedded portion of the first metal layer.
10. The metal pattern structure of claim 1 , wherein the top surface of the positioning layer is higher than the top surface of the organic protection layer.