IP Library Granted Patent US 10,770,388
Granted Patent B2
US 10,770,388 · App. 16/009,200 · Granted Sep 8, 2020

Transistor with recessed cross couple for gate contact over active region integration

Inventors: Ruilong Xie (Schenectady, NY); Veeraraghavan S. Basker (Schenectady, NY); Kangguo Cheng (Schenectady, NY); Jia Zeng (Sunnyvale, CA); Youngtag Woo (San Ramon, CA); Mahender Kumar (San Jose, CA); Guillaume Bouche (Albany, NY)
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
H01L23/5221H01L21/0276H01L21/76805H01L21/76895H01L21/823431H01L21/823475H01L23/535H01L27/0886H01L27/1104
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Quick Facts
Patent No.
US 10,770,388
App. No.
16/009,200
Granted
Sep 8, 2020
Kind
B2
Abstract

A semiconductor structure includes a substrate having a first region and a second region, a first source/drain disposed on the substrate in the first region, an interlevel dielectric (ILD) disposed on the source/drain, and a first gate disposed on the substrate. The semiconductor structure further includes a first contact trench within the ILD extending to the first source/drain, a first trench contact within the first contact trench, and a first source/drain contact trench extending to the first trench contact. The semiconductor structure further includes a cross couple contact trench within the ILD, and a cross couple contact disposed in the cross couple contact trench in contact with the first gate and the first trench contact. The cross couple contact couples the first source/drain and the first gate.

Claims (30)

1. An apparatus comprising:

a semiconductor structure including a substrate having a first region and a second region;

a first source/drain disposed on the substrate in the first region;

an interlevel dielectric (ILD) disposed on the source/drain;

a first gate disposed on the substrate;

a first spacer disposed between the first source/drain and the first gate;

a first contact trench within the ILD extending to the first source/drain;

a first trench contact within the first contact trench;

a first source/drain contact trench extending to the first trench contact;

a cross couple contact trench within the ILD; and

a cross couple contact disposed in the cross couple contact trench in contact with the first gate and the first trench contact, the cross couple contact coupling the first source/drain and the first gate such that the cross couple contact is substantially connected to a singular surface of the first source/drain.

2. The apparatus of claim 1 , further comprising:

a first cap disposed on the first gate.

3. The apparatus of claim 1 , further comprising:

an ILD fill upon the semiconductor structure; and

a first metallization layer within the ILD fill of the first region, wherein the first metallization layer is electrically isolated from the cross couple contact.

4. The apparatus of claim 1 , further comprising:

a second source/drain disposed on the substrate in the second region;

a second contact trench within the ILD extending to the second source/drain; and

a second trench contact within the second contact trench such that the second trench contact is substantially connected to a singular surface of the second source/drain.

5. The apparatus of claim 1 , further comprising:

an anti-reflective coating material layer disposed over the semiconductor structure.

6. The apparatus of claim 1 , further comprising:

an ILD fill material disposed over the semiconductor structure.

7. The apparatus of claim 1 , further comprising:

a first metallization layer deposed within the ILD, wherein the first metallization layer is electrically isolated from the cross couple contact.

8. The apparatus of claim 1 , further comprising:

a second contact trench within the ILD extending to a second source/drain of the second region.

9. The apparatus of claim 8 , further comprising:

a second trench contact within the second contact trench.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 15, 2018
From: XIE, RUILONG; BASKER, VEERARAGHAVAN S.; CHENG, KANGGUO; ZENG, JIA; WOO, YOUNGTAG; KUMAR, MAHENDER; BOUCHE, GUILLAUME
To: INTERNATIONAL BUSINESS MACHINES CORPORATION
Reel/Frame 046373/0546 →
Continuity (1)
Related Publication 20190385946A1 · Dec 19, 2019
Cited By (4)
US 12,389,646 US 12,406,907 US 12,604,510 US 12,660,281