Semiconductor package structure and method for manufacturing the same

1. A semiconductor package structure, comprising:

a lower conductive structure;

an upper conductive structure disposed on the lower conductive structure;

a first semiconductor device;

a second semiconductor device electrically connected to the first semiconductor device by a first path in the upper conductive structure; and

an interconnection structure,

wherein the lower conductive structure is electrically connected to the first semiconductor device through a second path in the upper conductive structure under the first path,

the first path comprises a plurality of first traces extending across a gap between the first semiconductor device and the second semiconductor device and electrically connecting the first semiconductor device to the second semiconductor device, wherein the outmost of the first traces define a bridge region,

the interconnection structure is disposed under the bridge region and disposed between and electrically connecting the upper conductive structure and the lower conductive structure,

the interconnection structure is made of a metal pillar connected to a first pad of the lower conductive structure, and wherein there is at least one void between the interconnection structure and the first pad of the lower conductive structure.

2. The semiconductor package structure of claim 1 , wherein a dielectric material fills the void.

3. The semiconductor package structure of claim 1 , wherein the upper conductive structure includes a second trace defining the second path, and the second path is located under the bridge region.

4. The semiconductor package structure of claim 3 , wherein a projection of the second trace on the lower conductive structure exceeds an edge of a projection of the bridge region on the lower conductive structure.

5. The semiconductor package structure of claim 3 , wherein the first semiconductor device is electrically connected to receive power or is grounded through the second path.

6. The semiconductor package structure of claim 1 , further comprising:

a conductive via extending through the upper conductive structure from an upper surface to a lower surface of the upper conductive structure.

7. The semiconductor package structure of claim 6 , wherein the conductive via comprises a seed layer.

8. The semiconductor package structure of claim 6 , wherein the first semiconductor device is electrically connected to the lower conductive structure through the conductive via.

9. The semiconductor package structure of claim 6 , further comprising:

a bonding layer disposed between the lower conductive structure and the upper conductive structure, wherein the conductive via extends through the bonding layer.

10. The semiconductor package structure of claim 9 , wherein the interconnection structure is embedded in the bonding layer.

11. The semiconductor package structure of claim 1 , wherein the interconnection structure comprises an interconnect element, and the interconnect element has a neck portion.

12. The semiconductor package structure of claim 9 , further comprising a space defined by the upper conductive structure, the bonding layer and the interconnection structure.

13. The semiconductor package structure of claim 6 , wherein the bridge region is surrounded by the conductive via.

14. The semiconductor package structure of claim 6 , wherein the interconnection structure is surrounded by the conductive via.

15. The semiconductor package structure of claim 6 , wherein a portion of the conductive via is disposed over the upper surface of the upper conductive structure.

16. The semiconductor package structure of claim 6 , wherein a pitch of the conductive via is different from a pitch of the interconnection structure.