Stacked memory package incorporating millimeter wave antenna in die stack
View Patent ↗A stacked semiconductor device assembly may include a first semiconductor device having a first substrate and a first set of vias through the first substrate. The first set of vias may define a first portion of an antenna structure. The stacked semiconductor device assembly may further include a second semiconductor device having a second substrate and a second set of vias through the second substrate. The second set of vias may define a second portion of the antenna structure. The stacked semiconductor device assembly may also include a stack interconnect structure electrically coupling the first portion of the antenna structure to the second portion of the antenna.
1. A stacked semiconductor device assembly comprising:
a first semiconductor device having a first substrate and a first set of vias through the first substrate, the first set of vias defining a first portion of an antenna structure;
a second semiconductor device having a second substrate and a second set of vias through the second substrate, the second set of vias defining a second portion of the antenna structure; and
a stack interconnect structure electrically coupling the first portion of the antenna structure to the second portion of the antenna structure.
2. The assembly of claim 1 , further comprising:
one or more additional semiconductor devices, each having an additional substrate and an additional set of vias through the additional substrate, the additional set of vias defining an additional portion of the antenna structure; and
one or more additional interconnect structures electrically coupling the additional portion of the antenna structure of each of the additional semiconductor devices to the first portion of the antenna structure and the second portion of the antenna structure.
3. The assembly of claim 1 , wherein the first semiconductor device and the second semiconductor device are incorporated into a stacked three-dimensional integrated circuit, and wherein the antenna structure extends along a vertical surface of the stacked three-dimensional integrated circuit.
4. The assembly of claim 1 , wherein the first semiconductor device includes at least one of a transmitter, a receiver, or a transceiver, communicatively coupled to the antenna structure.
5. The assembly of claim 1 , wherein the second semiconductor device includes an interconnect matrix electrically coupling at least two vias from the second set of vias in a daisy chain configuration.
6. The assembly of claim 5 , wherein at least a portion of the interconnect matrix defines an exposed laser oblation zone for tuning the antenna structure.
7. The assembly of claim 5 , wherein at least a portion of the interconnect matrix defines a fuse for tuning the antenna structure.
8. The assembly of claim 1 , wherein the stack interconnect structure includes a ball-grid-array.
9. The assembly of claim 1 , wherein the first substrate is a silicon substrate and the first set of vias are each through-silicon-vias, and wherein the second substrate is another silicon substrate and the second set of vias are each through-silicon-vias.
10. The assembly of claim 1 , wherein the antenna structure is a millimeter wave antenna.
11. A method comprising:
forming a first set of vias through a first substrate of a first semiconductor device, the first set of vias defining a first portion of an antenna structure;
forming a second set of vias through a second substrate of a second semiconductor device, the second set of vias defining a second portion of the antenna structure; and
electrically coupling the first portion of the antenna structure to the second portion of the antenna by a stack interconnect structure.
12. The method of claim 11 , further comprising, for one or more additional semiconductor devices:
forming an additional set of vias through an additional substrate, the additional set of vias defining an additional portion of the antenna structure; and
electrically coupling the additional portion of the antenna structure to the first portion of the antenna structure and the second portion of the antenna structure by an additional stack interconnect structure.
13. The method of claim 11 , further comprising:
communicatively coupling at least one of a transmitter, a receiver, or a transceiver to the antenna structure.
14. The method of claim 11 , further comprising:
electrically coupling at least two vias from the second set of vias in a daisy chain configuration by an interconnect matrix.
15. The method of claim 11 , further comprising tuning the antenna through at least one of a laser oblation process or a fuse blowing process.
16. The method of claim 11 , wherein the stack interconnect structure includes a ball-grid-array.
17. The method of claim 11 , wherein the first substrate is a silicon substrate and the first set of vias are each through-silicon-vias, and wherein the second substrate is another silicon substrate and the second set of vias are each through-silicon-vias.
18. The method of claim 11 , wherein the antenna structure is a millimeter wave antenna.
19. A stacked three-dimensional integrated circuit apparatus comprising:
a first semiconductor device having a first substrate;
a second semiconductor device having a second substrate; and
an antenna structure extending along a vertical surface of the stacked three-dimensional integrated circuit apparatus, the antenna structure defined by at least a first set of vias through the first substrate and a second set of vias through the second substrate.
20. The apparatus of claim 19 , further comprising:
a stack interconnect structure electrically coupling the first set of vias to the second set of vias.