Composite wiring board with electrical through connections
A composite wiring circuit with electrical through connections and method of manufacturing the same. The composite wiring circuit includes a glass with first electrically-conducting through vias. The first electrically-conducting through vias pass from a top surface of the glass layer to a bottom surface of the glass layer. The composite wiring circuit further includes an interposer layer with second electrically-conducting through vias. The second electrically-conducting through vias pass from a top surface of the interposer layer to a bottom surface of the interposer layer. The second electrically-conducting through vias are electrically coupled to the first electrically-conducting through vias.
1. A composite wiring circuit with electrical through connections, the composite wiring circuit comprising:
a glass layer with first electrically-conducting through vias, the first electrically-conducting through vias passing from a top surface of the glass layer to a bottom surface of the glass layer, the first electrically-conducting through vias including a first pitch;
an interposer layer with second electrically-conducting through vias, the second electrically-conducting through vias passing from a top surface of the interposer layer to a bottom surface of the interposer layer, the second electrically-conducting through vias including a second pitch that is smaller than the first pitch;
a first redistribution wiring layer carried by the top surface of the interposer layer which faces the glass layer, the first redistribution wiring layer electrically coupling the first electrically-conducting through vias and the second electrically-conducting through vias; and
a first coupling layer, wherein the first coupling layer electrically couples a top surface of first electrically-conducting through vias and a bottom surface of the second electrically-conducting through vias;
wherein the first electrically-conducting through vias include a first diffusion barrier carried by the top surface of the first electrically-conducting through vias, the first diffusion barrier is electrically coupled to the top surface of the first electrically-conducting through vias, and the first coupling layer is electrically coupled to a top surface of the first diffusion barrier;
wherein the second electrically-conducting through vias include a second diffusion barrier carried by the bottom surface of the second electrically-conducting through vias, the first coupling layer is electrically coupled to a bottom surface of the second diffusion barrier, and the bottom surface of the second diffusion barrier is electrically coupled to the bottom surface of the second electrically-conducting through vias; and
wherein the first diffusion barrier and the second diffusion barrier include ball limiting metallurgy pads.
2. The composite wiring circuit according to claim 1 , further comprising a plurality of first redistribution wiring layers including the first redistribution wiring layer, wherein at least one of the first redistribution wiring layers is electrically coupled to at least one of the first electrically-conducting through vias and at least one of the second electrically-conducting through vias.
3. The composite wiring circuit according to claim 2 , further comprising a dielectric layer, the dielectric layer electrically insulating each first redistribution wiring layer.
4. The composite wiring circuit according to claim 1 , further comprising a second redistribution wiring layer carried by the bottom surface of the interposer layer which faces away from the glass layer, the second redistribution wiring layer electrically coupled to an integrated circuit carried by the top surface of the interposer layer.
5. The composite wiring circuit according to claim 4 , wherein the integrated circuit is electrically coupled to at least one of the second electrically-conducting through vias.
6. The composite wiring circuit according to claim 1 , further comprising a first underfill layer, the first underfill layer joining the top surface of the interposer layer which faces the glass layer and the top surface of the glass layer.
7. The composite wiring circuit according to claim 1 , further comprising a laminate substrate, wherein the composite wiring circuit is carried by the laminate substrate.
8. The composite wiring circuit according to claim 7 , further comprising a second coupling layer, the second coupling layer electrically coupling the composite wiring circuit and the laminate substrate.
9. The composite wiring circuit according to claim 7 , further comprising a second underfill layer, the second underfill layer joining the composite wiring circuit and the laminate substrate.
10. The composite wiring circuit according to claim 1 , further comprising:
a first-integrated-circuit carried by the interposer layer; and
a second-integrated-circuit carried by the interposer layer, wherein the interposer layer electrically couples the first-integrated circuit and the second-integrated circuit.
11. The composite wiring circuit according to claim 1 , further comprising a passive electrical device carried by the glass layer, the passive electrical device is electrically coupled to at least one electrically-conducting through via.
12. The composite wiring circuit according to claim 11 , wherein the passive electrical device includes an inductor.
13. The composite wiring circuit according to claim 1 , wherein the first electrically-conducting through vias are tapered.