Contact jumper for non-self aligned contact devices
A semiconductor structure includes a first source/drain contact disposed between a first gate structure and a second gate structure, a dielectric cap disposed on the first source/drain contact, and a first gate contact disposed over the dielectric cap. The first gate contact connects the first gate structure with the second gate structure.
1 . A semiconductor structure, comprising:
a first source/drain contact disposed between a first gate structure and a second gate structure;
a dielectric cap disposed on the first source/drain contact;
a first gate contact disposed over the dielectric cap, the first gate contact connecting the first gate structure with the second gate structure;
a third gate structure adjacent the first gate structure;
a second gate contact disposed on the third gate structure;
a first source/drain region disposed between the first gate structure and the second gate structure;
a second source/drain region disposed between the first gate structure and the third gate structure; and
a second source/drain contact disposed on the second source/drain region,
wherein the first source/drain contact is disposed on the first source/drain region; and
wherein the second gate contact is separated from the first gate contact by a dielectric layer.
2 . The semiconductor structure of claim 1 , wherein the dielectric cap has a top surface extending above a top surface of the first gate structure and the second gate structure.
3 . The semiconductor structure of claim 2 , wherein a middle portion of the first gate contact is disposed over the dielectric cap.
4 . The semiconductor structure of claim 3 , wherein the first gate contact comprises a first via disposed on the first gate structure and a second via disposed on the second gate structure.
5 . The semiconductor structure of claim 4 , wherein the first via and the second via of the first gate contact are disposed in a first interlayer dielectric layer, and the middle portion of the first gate contact is disposed in a second interlayer dielectric layer.
6 . The semiconductor structure of claim 1 , wherein the dielectric cap has a top surface extending above a top surface of the first gate structure and the second gate structure, and a middle portion of the first gate contact is disposed over the dielectric cap.
7 . The semiconductor structure of claim 1 , further comprising:
a fourth gate structure adjacent the second gate structure;
a third source/drain region disposed between the fourth gate structure and the second gate structure; and
a third source/drain contact disposed on the third source/drain region.
8 . The semiconductor structure of claim 1 , wherein the dielectric cap comprises a dielectric material selected from the group consisting of SiN, SiO 2 , SiOC, SiOCN, SiBCN and SiC.
9 . The semiconductor structure of claim 1 , wherein the first source/drain region and the second source/drain region are disposed between a first stack of nanosheet channel layers.
10 . The semiconductor structure of claim 9 , wherein the second source/drain region is disposed between the first stack of nanosheet channel layers and a second stack of nanosheet channel layers.
11 . The semiconductor structure of claim 10 , wherein the first stack of nanosheet channel layers and the second stack of nanosheet channel layers are disposed on a bottom dielectric insulator layer.
12 . A semiconductor structure, comprising:
a first source/drain contact disposed between a first gate structure and a second gate structure;
a dielectric cap disposed on the first source/drain contact, the dielectric cap extending above a top surface of the first gate structure and the second gate structure;
a gate contact jumper connecting the first gate structure with the second gate structure, wherein a portion of the gate contact jumper is disposed over the dielectric cap:
a third gate structure adjacent the first gate structure; and
a gate contact disposed on the third gate structure;
a first source/drain region disposed between the first gate structure and the second gate structure;
a second source/drain region disposed between the first gate structure and the third gate structure; and
a second source/drain contact disposed on the second source/drain region;
wherein the first source/drain contact is disposed on the first source/drain region; and
wherein the gate contact is separated from the gate contact jumper by a dielectric layer.
13 . The semiconductor structure of claim 12 , wherein a middle portion of the gate contact jumper is disposed over the dielectric cap.
14 . The semiconductor structure of claim 13 , wherein the gate contact jumper comprises a first via disposed on the first gate structure and a second via disposed on the second gate structure.
15 . The semiconductor structure of claim 14 , wherein the first via and the second via of the gate contact jumper are disposed in a first interlayer dielectric layer, and the middle portion of the gate contact jumper is disposed in a second interlayer dielectric layer.
16 . The semiconductor structure of claim 12 , further comprising:
a fourth gate structure adjacent the second gate structure;
a third source/drain region disposed between the fourth gate structure and the second gate structure; and
a third source/drain contact disposed on the third source/drain region.
17 . The semiconductor structure of claim 12 , wherein the dielectric cap comprises a dielectric material selected from the group consisting of SiN, SiO 2 , SiOC, SiOCN, SiBCN and SiC.
18 . The semiconductor structure of claim 12 , wherein the first source/drain region and the second source/drain region are disposed between a first stack of nanosheet channel layers.
19 . The semiconductor structure of claim 18 , wherein the second source/drain region is disposed between the first stack of nanosheet channel layers and a second stack of nanosheet channel layers.
20 . The semiconductor structure of claim 19 , wherein the first stack of nanosheet channel layers and the second stack of nanosheet channel layers are disposed on a bottom dielectric insulator layer.