Scalable integrated circuit high density capacitors
View Patent ↗The present invention provides several scalable integrated circuit high density capacitors and their layout techniques. The capacitors are scaled, for example, by varying the number of metal layers and/or the area of the metal layers used to form the capacitors. The capacitors use different metallization patterns to form the metal layers, and different via patterns to couple adjacent metal layers. In embodiments, optional shields are included as the top-most and/or bottom-most layers of the capacitors, and/or as side shields, to reduce unwanted parasitic capacitance.
1. An integrated circuit component, comprising:
a substrate;
a first planar conductor on the substrate;
a second planar conductor;
a dielectric layer contacting and between the first and second planar conductors, wherein the dielectric layer, the first planar conductor, and the second planar conductor are configured as a capacitor;
a third planar conductor; and
a two-dimensional array of vias positioned between, and electrically coupling, the second and third planar conductors, wherein the vias are substantially evenly distributed across the two-dimensional array.
2. The integrated circuit component of claim 1 , wherein a via in the array of vias is perpendicular to both the second and third planar conductors.
3. The integrated circuit component of claim 1 , further comprising a shield including a second array of vias adjacent to the dielectric layer and electrically coupled to the first planar conductor.
4. The integrated circuit component of claim 3 , wherein the shield is in a plane that is orthogonal to the first planar conductor.
5. The integrated circuit component of claim 1 , wherein the third planar conductor is a metal shield.
6. The integrated circuit component of claim 1 , wherein the first and second planar conductors are in parallel planes.
7. The integrated circuit component of claim 1 , wherein the dielectric layer is on the first planar conductor.
8. The integrated circuit component of claim 1 , wherein the second planar conductor is on the dielectric layer.
9. The integrated circuit component of claim 1 , wherein the array of vias is on the second planar conductor.
10. The integrated circuit component of claim 1 , wherein the third planar conductor is on the array of vias.
11. The integrated circuit component of claim 1 , wherein the two-dimensional array of vias is a square array.
12. The integrated circuit component of claim 1 , wherein the first direction of the two-dimensional array is orthogonal to the second direction.
13. The integrated circuit component of claim 1 , wherein the two-dimensional array comprises at least two vias in each dimension.
14. The integrated circuit of claim 1 , wherein the vias are substantially evenly distributed across a two-dimensional surface area of the two-dimensional array.
15. The integrated circuit of claim 1 , wherein the vias are substantially evenly distributed across the entirety of a two-dimensional surface area of the two-dimensional array.
16. An integrated circuit component, comprising:
a substrate;
a first planar conductor on the substrate;
a second planar conductor;
a dielectric layer contacting and between the first and second planar conductors, wherein the dielectric layer, the first planar conductor, and the second planar conductor are configured as a capacitor;
a third planar conductor;
a two-dimensional array of vias positioned between, and electrically coupling, the second and third planar conductors, wherein a via in the array of vias is perpendicular to both the second and third planar conductors, further wherein the two-dimensional array of vias is a square array; and
a shield, located in a plane that is orthogonal to the first planar conductor, including a second array of vias located adjacent to the dielectric layer and electrically coupled to the first planar conductor.
17. An integrated circuit component, comprising:
a substrate;
a first planar conductor on the substrate;
a second planar conductor;
a dielectric layer contacting and between the first and second planar conductors, wherein the dielectric layer, the first planar conductor, and the second planar conductor are configured as a capacitor;
a third planar conductor;
a two-dimensional array of vias positioned between, and electrically coupling, the second and third planar conductors; and
a shield including a second array of vias adjacent to the dielectric layer and electrically coupled to the first planar conductor.
18. The integrated circuit component of claim 17 , wherein the shield is in a plane that is orthogonal to the first planar conductor.
19. An integrated circuit component, comprising:
a substrate;
a first planar conductor on the substrate;
a second planar conductor;
a dielectric layer contacting and between the first and second planar conductors, wherein the dielectric layer, the first planar conductor, and the second planar conductor are configured as a capacitor;
a third planar conductor;
a two-dimensional square array of vias positioned between, and electrically coupling, the second and third planar conductors.