Cap and substrate electrical connection at wafer level
First Claim
Patent Images
1. A device comprising:
- an electrically conductive ground structure disposed in a first substrate and electrically coupled to a second substrate, wherein the electrically conductive ground structure extends from a top surface of the first substrate to an opposing bottom surface of the first substrate;
a dielectric layer interposed between the first substrate and the second substrate;
a conductive layer disposed within the dielectric layer, wherein the conductive layer physically contacts the electrically conductive ground structure;
a conductive plug extending from the top surface of the first substrate to the opposing bottom surface of the first substrate and through the dielectric layer to the conductive layer such that the conductive plug physically contacts the conductive layer; and
a cap that includes a third substrate positioned over the first substrate and electrically coupled to electrically coupled to the ground structure.
1 Assignment
0 Petitions
Accused Products
Abstract
A cap and substrate having an electrical connection at a wafer level includes providing a substrate and forming an electrically conductive ground structure in the substrate and electrically coupled to the substrate. An electrically conductive path to the ground structure is formed in the substrate. A top cap is then provided, wherein the top cap includes an electrically conductive surface. The top cap is bonded to the substrate so that the electrically conductive surface of the top cap is electrically coupled to the path to the ground structure.
17 Citations
20 Claims
-
1. A device comprising:
-
an electrically conductive ground structure disposed in a first substrate and electrically coupled to a second substrate, wherein the electrically conductive ground structure extends from a top surface of the first substrate to an opposing bottom surface of the first substrate; a dielectric layer interposed between the first substrate and the second substrate; a conductive layer disposed within the dielectric layer, wherein the conductive layer physically contacts the electrically conductive ground structure; a conductive plug extending from the top surface of the first substrate to the opposing bottom surface of the first substrate and through the dielectric layer to the conductive layer such that the conductive plug physically contacts the conductive layer; and a cap that includes a third substrate positioned over the first substrate and electrically coupled to electrically coupled to the ground structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 20)
-
-
9. A device comprising:
-
an electrically conductive ground structure disposed in a first substrate, wherein the electrically conductive ground structure extends completely through the first substrate to a top surface of a second substrate such that the electrically conductive ground structure physically contacts the top surface of the second substrate; a dielectric layer interposed between the first substrate and the second substrate; a conductive layer disposed within the dielectric layer, wherein the conductive layer physically contacts the conductive ground structure; a conductive plug extending extends completely through the first substrate to the conductive layer such that the conductive plug physically contacts the conductive layer; and a cap coupled to the first substrate and electrically coupled to the ground structure. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. A device comprising:
-
an electrically conductive ground structure disposed in a first substrate and electrically coupled to a second substrate, wherein the electrically ground structure extends from a top surface of the first substrate to an opposing bottom surface of the first substrate, wherein the first substrate has a cavity; a microelectromechanical system (MEMS) device disposed within the cavity of the first substrate; a dielectric layer interposed between the first substrate and the second substrate, wherein the dielectric Layer is disposed below the cavity; a conductive layer disposed within the dielectric layer and separated from the MEMS device by the dielectric layer, wherein the conductive layer physically contacts the electrically conductive ground structure; and a cap that includes a third substrate positioned over the first substrate and electrically coupled to electrically coupled to the ground structure. - View Dependent Claims (16, 17, 18, 19)
-
Specification