Mock bump system for flip chip integrated circuits
View Patent ↗A mock bump system includes: providing a first structure having an edge; and forming a mock bump near the edge.
1. A method of manufacture of a mock bump system comprising:
providing a first structure, having a solder resist layer and an edge; and
forming a mock bump near the edge, the mock bump attached only to the first structure with the mock bump including:
a bump body attached to the first structure and in contact with the solder resist layer, and
a bump cap having a flat surface between the bump cap and the bump body with the bump cap wider than the bump body and with a gap between the flat surface of the bump cap and the solder resist layer; and
attaching a chip interconnect to the first structure.
2. The method as claimed in claim 1 wherein the first structure is a flip chip substrate.
3. The method as claimed in claim 1 further comprising coupling a flip chip integrated circuit to the first structure.
4. The method as claimed in claim 1 further comprising forming columns of a plurality of the mock bump on the first structure wherein the first structure is a flip chip substrate.
5. The method as claimed in claim 1 further comprising forming system contacts on the first structure wherein the first structure is a flip chip substrate.
6. A method of manufacture of a mock bump system comprising:
providing a first structure, having an edge, a system side, and a component side including a solder resist layer on the component side;
forming a mock bump near the edge, the mock bump attached only to the first structure, the mock bump including forming a bump body and a bump cap, wherein the bump body is attached to the first structure, and in contact with the solder resist layer, and the bump cap has a flat surface between the bump cap and the bump body with the bump cap wider than the bump body and with a gap between the flat surface of the bump cap and the solder resist layer, and having a mushroom shape, secured to the component side; and
attaching a chip interconnect to the first structure.
7. The method as claimed in claim 6 wherein the first structure is a flip chip substrate including forming an array of contact pads surrounded by the solder resist layer.
8. The method as claimed in claim 6 further comprising coupling a flip chip integrated circuit to the first structure including coupling under bump metallization on the flip chip integrated circuit to contact pads on the first structure, wherein the first structure is a flip chip substrate.
9. The method as claimed in claim 6 further comprising forming columns of a plurality of the mock bump on the first structure wherein the first structure is a flip chip substrate including surrounding an array of contact pads by the columns.
10. The method as claimed in claim 6 further comprising forming system contacts on the first structure wherein the first structure is a flip chip substrate including coupling system interconnects to the system contacts.
11. A mock bump system comprising:
a first structure having a solder resist layer and an edge;
a mock bump near the edge, the mock bump attached only to the first structure with the mock bump including:
a bump body attached to the first structure and in contact with the solder resist layer, and
a bump cap having a flat surface between the bump cap and the bump body with the bump cap wider than the bump body and with a gap between the flat surface of the bump cap and the solder resist layer; and
a chip interconnect on the first structure.
12. The system as claimed in claim 11 wherein the first structure is a flip chip substrate.
13. The system as claimed in claim 11 further comprising a flip chip integrated circuit coupled to the first structure.
14. The system as claimed in claim 11 further comprising columns of a plurality of the mock bump on the first structure wherein the first structure is a flip chip substrate.
15. The system as claimed in claim 11 further comprising system contacts on the first structure wherein the first structure is a flip chip substrate.
16. The system as claimed in claim 11 further comprising:
a system side and a component side on the first structure; and
the bump body with the bump cap, having a mushroom shape, secured to the component side.
17. The system as claimed in claims 16 wherein the first structure is a flip chip substrate includes an array of contact pads surrounded by the solder resist layer.
18. The system as claimed in claim 16 further comprising a flip chip integrated circuit coupled to the first structure includes under bump metallization on the flip chip integrated circuit coupled to the contact pads on the first structure, wherein the first structure is a flip chip substrate.
19. The system as claimed in claim 16 further comprising columns of a plurality of the mock bump on the first structure wherein the first structure is a flip chip substrate includes an array of contact pads surrounded by the columns.
20. The system as claimed in claim 16 further comprising system contacts on the first structure, wherein the first structure is a flip chip substrate, includes system interconnects coupled to the system contacts.