IP Library Granted Patent US 12,464,813
Granted Patent B2
US 12,464,813 · App. 17/504,765 · Granted Nov 4, 2025

Semiconductor device having hybrid middle of line contacts

Inventors: Ruilong Xie (Niskayuna, NY); Su Chen Fan (Cohoes, NY); Veeraraghavan S. Basker (Schenectady, NY); Julien Frougier (Albany, NY); Nicolas Loubet (Guilderland, NY)
Assignee: International Business Machines Corporation
H10D84/85H10D30/6735H10D30/6757H10D62/118H10D64/258H10D84/0186H10D84/038
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Quick Facts
Patent No.
US 12,464,813
App. No.
17/504,765
Granted
Nov 4, 2025
Kind
B2
Abstract

A CMOS (complementary metal-oxide semiconductor) device includes an n-channel metal-oxide semiconductor (NMOS) device, a p-channel metal-oxide semiconductor (PMOS) device, the NMOS and the PMOS device surrounded by a first dielectric material, the NMOS device separated from the PMOS device by a second dielectric material, a first NMOS gate separated from a first PMOS gate by the second dielectric material, a second NMOS gate electrically connected to a second PMOS gate by a metal link disposed between the NMOS gate and the PMOS gate, the metal link disposed above the second dielectric material, a first source/drain (S/D) contact disposed above the second dielectric material, the first S/D contact disposed in contact with both NMOS S/D region and a PMOS S/D region, and a second S/D contact disposed adjacent to the second dielectric material, the second S/D contact disposed in contact with a single S/D region.

Claims (26)

1 . A CMOS (complementary metal-oxide semiconductor) device comprising:

an n-channel metal-oxide semiconductor (NMOS) device;

a p-channel metal-oxide semiconductor (PMOS) device, the NMOS and the PMOS device surrounded by a first dielectric material, the NMOS device separated from the PMOS device by a second dielectric material;

a first NMOS gate separated from a first PMOS gate by the second dielectric material;

a second NMOS gate electrically connected to a second PMOS gate by a metal link disposed between the second NMOS gate and the second PMOS gate, the metal link disposed above the second dielectric material;

a first source/drain (S/D) contact disposed above the second dielectric material, the first S/D contact disposed in contact with both an NMOS S/D region and a PMOS S/D region; and

a second S/D contact disposed adjacent to the second dielectric material, the second S/D contact disposed in contact with a first single S/D region.

2 . The CMOS device according to claim 1 , further comprising a third S/D contact disposed adjacent to the second dielectric material, the third S/D contact disposed in contact with a second single S/D region.

3 . The CMOS device according to claim 1 , further comprising a third S/D contact disposed adjacent to the second dielectric material, the third S/D contact disposed in contact with a second PMOS S/D region.

4 . The CMOS device according to claim 1 , wherein the CMOS device comprises tri-gate channels, wherein one edge of a channel is disposed in contact with the second dielectric material.

5 . The CMOS device according to claim 1 , wherein the CMOS device comprises nanosheet channels.

6 . The CMOS device according to claim 1 , further comprising upper gate contacts.

7 . The CMOS device according to claim 1 , further comprising upper S/D contacts.

8 . A CMOS (complementary metal-oxide semiconductor) device comprising:

an n-channel metal-oxide semiconductor (NMOS) device;

a p-channel metal-oxide semiconductor (PMOS) device, the NMOS and the PMOS device surrounded by a first dielectric material, the NMOS device separated from the PMOS device by a second dielectric material;

a first NMOS gate separated from a first PMOS gate by the second dielectric material;

a second NMOS gate electrically connected to a second PMOS gate by a metal link disposed between the second NMOS gate and the second PMOS gate, the metal link disposed above the second dielectric material;

a first source/drain (S/D) contact disposed above the second dielectric material, the first S/D contact disposed in contact with both an NMOS S/D region and a PMOS S/D region;

a second S/D contact disposed adjacent to the second dielectric material, the second S/D contact disposed in contact with a single S/D region; and

a third S/D contact disposed adjacent to the second dielectric material, the third S/D contact disposed in contact with a single S/D region.

9 . The CMOS device according to claim 8 , further comprising the third S/D contact disposed adjacent to the second dielectric material, the third S/D contact disposed in contact with a second PMOS S/D region.

10 . The CMOS device according to claim 8 , wherein the CMOS device comprises tri-gate channel contacts wherein a channel edge is disposed in contact with the second dielectric material.

11 . The CMOS device according to claim 8 , wherein the CMOS device comprises nanosheet channels.

12 . The CMOS device according to claim 8 , further comprising upper gate contacts.

13 . The CMOS device according to claim 8 , further comprising upper S/D contacts.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 19, 2021
From: XIE, RUILONG; FAN, SU CHEN; BASKER, VEERARAGHAVAN S.; FROUGIER, JULIEN; LOUBET, NICOLAS
To: INTERNATIONAL BUSINESS MACHINES CORPORATION
Reel/Frame 057832/0479 →
Continuity (1)
Related Publication 20230124681A1 · Apr 20, 2023
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