Wire bond interconnection and method of manufacture thereof
View Patent ↗A method of manufacture of a semiconductor package includes: providing a substrate; mounting a semiconductor die on the substrate, the semiconductor die having a die pad; mounting a lead finger on the substrate; attaching a support pedestal on sides of the lead finger; and attaching a wire interconnection between the die pad and the support pedestal, the wire interconnection having a ball bond on the die pad and a stitch bond on the support pedestal.
1. A method of manufacture of a semiconductor package comprising:
providing a substrate;
mounting a semiconductor die on the substrate, the semiconductor die having a die pad;
mounting a lead finger on the substrate;
attaching a support pedestal on sides of the lead finger;
attaching a wire interconnection between the die pad and the support pedestal, the wire interconnection having a ball bond on the die pad and a stitch bond on the support pedestal; and
wherein attaching the support pedestal includes:
attaching the support pedestal having a bottom side coplanar with a bottom side of the lead finger; and
wherein attaching the support pedestal includes attaching the support pedestal in direct contact with the substrate.
2. The method of claim 1 wherein attaching the wire interconnection includes metallurgically bonding the wire interconnection directly to the support pedestal with the stitch bond.
3. The method of claim 1 wherein attaching the support pedestal includes attaching the support pedestal between the wire interconnection and the lead finger.
4. The method of claim 1 wherein attaching the support pedestal includes attaching the support pedestal in direct contact with a top of the lead finger.
5. The method of claim 1 wherein attaching the support pedestal includes attaching the support pedestal in direct contact with the sides of the lead finger, the sides includes a lateral side of the lead finger.
6. The method of claim 1 wherein attaching the support pedestal includes attaching the support pedestal having a concave shape.
7. The method of claim 1 wherein attaching the support pedestal includes attaching the support pedestal to be elevated above the substrate by the lead finger.
8. The method of claim 1 wherein mounting the lead frame includes mounting the lead finger, the lead finger including gold.
9. A semiconductor package comprising:
a substrate;
a semiconductor die on the substrate, the semiconductor die having a die pad;
a lead finger on the substrate;
a support pedestal on sides of the lead finger;
a wire interconnection between the die pad and the support pedestal, the wire interconnection having a ball bond on the die pad and a stitch bond on the support pedestal; and
wherein:
a bottom side of the support pedestal is coplanar with a bottom side of the lead finger; and
the support pedestal is in direct contact with the substrate.
10. The semiconductor package of claim 9 wherein the wire interconnection has a metallurgical bond directly to the support pedestal.
11. The semiconductor package of claim 9 wherein the support pedestal is between the wire interconnection and the lead finger.
12. The semiconductor package of claim 9 wherein the support pedestal is in direct contact with a top of the lead finger.
13. The semiconductor package of claim 9 wherein the sides of the lead finger in direct contact with the support pedestal includes a lateral side of the lead finger.
14. The semiconductor package of claim 9 wherein the support pedestal has a concave shape.
15. The semiconductor package of claim 9 wherein the support pedestal is elevated above the substrate by the lead finger.
16. The semiconductor package of claim 9 wherein the lead finger includes gold.