Post last wiring level inductor using patterned plate process
First Claim
Patent Images
1. A method of forming a semiconductor substrate, comprising:
- providing a substrate having at least one metal wiring level within the substrate;
depositing a first insulative layer on a surface of the substrate;
forming a wire bond pad within the first insulative layer;
depositing a second insulative layer on the first insulative layer and the wire bond pad; and
forming an inductor within the second insulative layer using a patterned plate process, wherein the inductor is formed substantially co-planar with at least a portion of the wire bond pad, wherein forming the inductor further comprises;
depositing a liner on the surface of the substrate and on a surface within an at least one opening within the second insulative layer;
depositing a seed layer on a surface of the liner;
removing a portion of the seed layer from the surface of the substrate, leaving the seed layer within the at least one opening within the second insulative layer;
depositing a conductive material within the at least one opening within the second insulative layer, such that the conductive material extends above the surface of the substrate; and
planarizing the surface of the substrate to remove excess conductive material extending above the surface of the substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of forming a semiconductor structure, and the semiconductor structure so formed, wherein a transmission line, such as an inductor, is formed on a planar level above the surface of a last metal wiring level.
30 Citations
8 Claims
-
1. A method of forming a semiconductor substrate, comprising:
-
providing a substrate having at least one metal wiring level within the substrate; depositing a first insulative layer on a surface of the substrate; forming a wire bond pad within the first insulative layer; depositing a second insulative layer on the first insulative layer and the wire bond pad; and forming an inductor within the second insulative layer using a patterned plate process, wherein the inductor is formed substantially co-planar with at least a portion of the wire bond pad, wherein forming the inductor further comprises; depositing a liner on the surface of the substrate and on a surface within an at least one opening within the second insulative layer; depositing a seed layer on a surface of the liner; removing a portion of the seed layer from the surface of the substrate, leaving the seed layer within the at least one opening within the second insulative layer; depositing a conductive material within the at least one opening within the second insulative layer, such that the conductive material extends above the surface of the substrate; and planarizing the surface of the substrate to remove excess conductive material extending above the surface of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification