MEMS device including an electrical interconnect through a substrate
First Claim
Patent Images
1. A MEMS device comprising:
- a MEMS substrate comprising a portion of a handle wafer bonded to a patterned electrically conductive device layer within a second wafer with an insulating layer positioned between the handle wafer and the second wafer;
a CMOS substrate having a front surface, a back surface and one or more metallization layers;
the front surface being bonded to the MEMS substrate;
one or more conductive features on the back surface of the CMOS substrate; and
electrical connections between the one or more metallization layers and the one or more conductive features.
0 Assignments
0 Petitions
Accused Products
Abstract
A MEMS device is disclosed. The MEMS device comprises a MEMS substrate and a CMOS substrate having a front surface, a back surface and one or more metallization layers. The front surface being bonded to the MEMS substrate. The MEMS device includes one or more conductive features on the back surface of the CMOS substrate and electrical connections between the one or more metallization layers and the one or more conductive features.
-
Citations
18 Claims
-
1. A MEMS device comprising:
-
a MEMS substrate comprising a portion of a handle wafer bonded to a patterned electrically conductive device layer within a second wafer with an insulating layer positioned between the handle wafer and the second wafer; a CMOS substrate having a front surface, a back surface and one or more metallization layers;
the front surface being bonded to the MEMS substrate;one or more conductive features on the back surface of the CMOS substrate; and electrical connections between the one or more metallization layers and the one or more conductive features. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A MEMS device comprising:
-
a MEMS substrate, wherein the MEMS substrate includes a portion of a handle wafer bonded to a patterned electrically conductive device layer within a second wafer with an insulating layer positioned between the handle wafer and the second wafer; an opening penetrating completely through the portion of the handle wafer and the insulating layer, and exposing the device layer; and a conductive layer deposited onto the handle wafer such that the conductive layer at least partially covers the surface of the handle wafer and the sidewalls of the opening including making physical contact to the device layer thereby electrically connecting the conductive layer to the device layer. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A MEMS device comprising:
-
a MEMS substrate, wherein the MEMS substrate includes a top layer connected to an electrically conductive bottom layer; an opening penetrating completely through the top layer, and exposing the bottom layer; a second electrically conductive layer deposited onto the MEMS substrate such that the second electrically conductive layer at least partially covers the surface and the sidewalls of the opening including making physical contact to the bottom layer, wherein the second electrically conductive layer is electrically connected to the bottom layer; and a CMOS substrate is bonded to the MEMS substrate; and wherein one or more openings in the back-side of the CMOS substrate exposing one or more metal interconnection layer. - View Dependent Claims (16, 17, 18)
-
Specification