Multilevel interconnect structure for integrated circuits
First Claim
Patent Images
1. A multilevel interconnect structure for an integrated circuit comprising:
- a first conducting layer;
a dielectric layer formed on said first conducting layer;
a second conducting layer formed partly on said dielectric layer; and
an I-shaped via plug for electrically connecting said first conducting layer and said second conducting layer, wherein said I-shaped via plug has an upper portion laterally extending into said second conducting layer and a lower portion undercutting said first conducting layer of said multilevel interconnect structure.
1 Assignment
0 Petitions
Accused Products
Abstract
A multilevel interconnect structure includes a lower conducting layer, a dielectric layer formed on the lower conducting layer, an upper conducting layer formed partly on the dielectric layer, and an I-shaped via plug for electrically connecting the lower conducting layer and the upper conducting layer. The I-shaped via plug has an upper portion which laterally extends into the upper conducting layer, and a lower portion which undercuts the lower conducting layer.
-
Citations
9 Claims
-
1. A multilevel interconnect structure for an integrated circuit comprising:
-
a first conducting layer; a dielectric layer formed on said first conducting layer; a second conducting layer formed partly on said dielectric layer; and an I-shaped via plug for electrically connecting said first conducting layer and said second conducting layer, wherein said I-shaped via plug has an upper portion laterally extending into said second conducting layer and a lower portion undercutting said first conducting layer of said multilevel interconnect structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification