IP Library › Granted Patent US 12,388,022
Granted Patent B2
US 12,388,022 · App. 17/885,025 · Granted Aug 12, 2025

Semiconductor device

Inventors: Jun Ki Park (Hwaseong-si, KR); Yoon Tae Hwang (Seoul, KR); Wan Don Kim (Seongnam-si, KR); Sung Hwan Kim (Hwaseong-si, KR); Tae Yeol Kim (Hwaseong-si, KR)
Assignee: SAMSUNG ELECTRONICS CO., LTD.
H01L23/535H01L21/76804H01L21/76805H01L21/76895H01L23/5283
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Quick Facts
Patent No.
US 12,388,022
App. No.
17/885,025
Granted
Aug 12, 2025
Kind
B2
Abstract

A semiconductor device includes a gate structure including a gate electrode on a substrate. A source/drain pattern is on the substrate and positioned on a side surface of the gate electrode. A source/drain contact is on the source/drain pattern. A first conductive pad is on the source/drain contact. A second conductive pad is on the gate structure. A via plug penetrates the first conductive pad and is connected to the source/drain contact. A gate contact penetrates the second conductive pad and is connected to the gate electrode. A portion of the via plug protrudes from the first conductive pad. A portion of the gate contact protrudes from the second conductive pad. A height from an upper surface of the gate structure to an upper surface of the via plug is equal to a height from the upper surface of the gate structure to an upper surface of the gate contact.

Claims (64)

1. A semiconductor device comprising:

a gate structure including a gate electrode on a substrate;

a source/drain pattern disposed on the substrate and positioned on a side surface of the gate electrode;

a source/drain contact disposed on the source/drain pattern and connected to the source/drain pattern;

a first conductive pad on the source/drain contact;

a second conductive pad on the gate structure;

a via plug penetrating the first conductive pad and connected to the source drain contact; and

a gate contact penetrating the second conductive pad and connected to the gate electrode,

wherein a portion of the via plug protrudes from an upper surface of the first conductive pad,

a portion of the gate contact protrudes from an upper surface of the second conductive pad, and

a height from an upper surface of the gate structure to an upper surface of the via plug is equal to a height from the upper surface of the gate structure to an upper surface of the gate contact.

2. The semiconductor device of claim 1 , wherein:

a width of the upper surface of the via plug is less than a width of the via plug disposed on the upper surface of the first conductive pad; and

a width of the upper surface of the gate contact is less than a width of the gate contact disposed on the upper surface of the second conductive pad.

3. The semiconductor device of claim 2 , wherein a width of the source/drain contact increases as a distance from the substrate increases.

4. The semiconductor device of claim 1 , wherein:

the first conductive pad includes a pad through hole; and

the via plug directly contacts side walls of the pad through hole.

5. The semiconductor device of claim 1 , wherein the upper surface of e gate structure is lower than the upper surface of the source/drain contact.

6. The semiconductor device of claim 5 , wherein a height from the upper surface of the gate structure to the upper surface of the second conductive pad is equal to a height from the upper surface of the gate structure to the upper surface of the source/drain contact.

7. The semiconductor device of claim 1 , wherein the upper surface of the gate structure is disposed on a same plane as the upper surface of the source drain contact.

8. The semiconductor device of claim 1 , wherein a thickness of the second conductive pad is greater than or equal to a thickness of the first conductive pad.

9. The semiconductor device of claim 1 , wherein:

the via plug includes a lower via plug and an upper via plug on the lower via plug; and

the lower via plug is directly connected to the source drain contact and disposed in the first conductive pad.

10. The semiconductor device of claim 9 , wherein the lower via plug and the upper via plug each have a single material film structure.

11. The semiconductor device of claim 1 , wherein an entirety of a lower surface of the second conductive pad is disposed on the upper surface of the gate structure.

12. The semiconductor device of claim 1 , wherein the gate contact and the via plug each have a single material structure.

13. A semiconductor device comprising:

a gate structure on a substrate, the gate structure including a gate electrode and a gate capping pattern on the gate electrode;

a source/drain pattern disposed on the substrate and positioned on a side surface of the gate electrode;

a source/drain contact disposed on the source/drain pattern and connected to the source/drain pattern;

a first conductive pad on the source/drain contact;

a second conductive pad on the gate capping pattern;

a via plug penetrating the first conductive pad and connected to the source/drain contact; and

a gate contact penetrating the second conductive pad and the gate capping pattern, and connected to the gate electrode,

wherein a width of the via plug decreases as a distance from an upper surface of the first conductive pad increases, and

a width of the gate contact decreases as a distance from an upper surface of the second conductive pad increases.

14. The semiconductor device of claim 13 , wherein:

the via plug includes a lower via plug and an upper via plug on the lower via plug; and

the lower via plug is directly connected to the source/drain contact and disposed in the first conductive pad.

15. The semiconductor device of claim 14 , wherein:

the first conductive pad includes a pad through hole; and

the lower via plug directly contacts side walls of the pad through hole.

16. The semiconductor device of claim 13 , wherein the gate contact and the via plug each have a single material film structure.

17. The semiconductor device of claim 13 , wherein a thickness of the second conductive pad is greater than or equal to a thickness of the first conductive pad.

18. A semiconductor device comprising:

a multi-channel active pattern on a substrate;

a gate structure that is disposed on the multi-channel active pattern, the gate structure includes a gate electrode and a gate capping pattern, the gate capping pattern is disposed on the gate electrode;

a source/drain pattern disposed on the substrate and positioned on a side surface of the gate electrode;

a source/drain contact disposed on the source/drain pattern and connected to the source/drain pattern;

a first conductive pad on the source/drain contact;

a second conductive pad on the gate capping pattern;

a via plug penetrating the first conductive pad and connected to the source/drain contact; and

a gate contact penetrating the second conductive pad and the gate capping pattern and connected to the gate electrode,

wherein the via plug includes a lower via plug disposed in the first conductive pad and an upper via plug on the lower via plug,

the gate contact includes a lower gate contact disposed in the second conductive pad and an upper gate contact on the lower gate contact,

a width of an upper surface of the upper via plug is less than a width of a lower surface of the via plug disposed on an upper surface of the first conductive pad, and

a width of an upper surface of the upper gate contact is less than a width of a lower surface of the gate contact disposed on an upper surface of the second conductive pad.

19. The semiconductor device of claim 18 , wherein:

the lower via plug includes a same material as the lower gate contact;

the upper via plug includes a same material as the upper gate contact; and

the lower gate contact, the upper gate contact, the lower via plug, and the upper via plug each have a single material film structure.

20. The semiconductor device of claim 18 , wherein a thickness of the second conductive pad is greater than or equal to a thickness of the first conductive pad.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 10, 2022
From: PARK, JUN KI; HWANG, YOON TAE; KIM, WAN DON; KIM, SUNG HWAN; KIM, TAE YEOL
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 060771/0978 →
Priority Claims (1)
KR 10-2021-0164581 · Nov 25, 2021 · national
Continuity (1)
Related Publication 20230163076A1 · May 25, 2023
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