Devices including gate spacer with gap or void and methods of forming the same
First Claim
Patent Images
1. A structure comprising:
- a substrate with a fin;
a gate stack over the fin;
a contact over the substrate; and
a spacer disposed laterally between the gate stack and the contact, the spacer comprising a first dielectric sidewall portion and a second dielectric sidewall portion, a void being disposed between the first dielectric sidewall portion and the second dielectric sidewall portion.
2 Assignments
0 Petitions
Accused Products
Abstract
Devices and structures that include a gate spacer having a gap or void are described along with methods of forming such devices and structures. In accordance with some embodiments, a structure includes a substrate, a gate stack over the substrate, a contact over the substrate, and a spacer disposed laterally between the gate stack and the contact. The spacer includes a first dielectric sidewall portion and a second dielectric sidewall portion. A void is disposed between the first dielectric sidewall portion and the second dielectric sidewall portion.
22 Citations
20 Claims
-
1. A structure comprising:
-
a substrate with a fin; a gate stack over the fin; a contact over the substrate; and a spacer disposed laterally between the gate stack and the contact, the spacer comprising a first dielectric sidewall portion and a second dielectric sidewall portion, a void being disposed between the first dielectric sidewall portion and the second dielectric sidewall portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A structure comprising:
-
a substrate; a gate dielectric over the substrate; a gate electrode over the gate dielectric; a gate spacer around the gate electrode, the gate spacer comprising a first solid dielectric sidewall portion and a second solid dielectric sidewall portion, a void being between the first solid dielectric sidewall portion and the second solid dielectric sidewall portion, the void being around the gate electrode; a source/drain region in the substrate and proximate to the gate dielectric and gate electrode; and a lower contact connecting to the source/drain region, the gate spacer being disposed immediately adjacent to the lower contact and between the lower contact and the gate electrode. - View Dependent Claims (11, 12, 13)
-
-
14. A structure comprising:
-
a gate dielectric over a substrate; a gate electrode over the gate dielectric; a contact in physical connection with the substrate at a point laterally removed from the gate electrode; a dielectric material surrounding the gate electrode and at least partially located between the gate electrode and the contact, the dielectric material comprising a first material throughout the dielectric material, wherein the dielectric material comprises a first sidewall facing the contact, the first sidewall being straight as the first sidewall extends from a first side of the dielectric material facing the substrate to a second side of the dielectric material opposite the first side; and a void surrounded by the dielectric material, wherein the void encircles the gate electrode. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification