IP Library › Granted Patent US 10,985,315
Granted Patent B2
US 10,985,315 · App. 16/835,843 · Granted Apr 20, 2021

Resistive random-access memory

Inventors: Kangguo Cheng (Schenectady, NY); Choonghyun Lee (Rensselaer, NY); Juntao Li (Cohoes, NY); Peng Xu (Santa Clara, CA)
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
H01L45/1206H01L27/2454H01L45/1233H01L45/16
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Quick Facts
Patent No.
US 10,985,315
App. No.
16/835,843
Granted
Apr 20, 2021
Kind
B2
Abstract

Techniques for fabricating a volatile memory structure having a transistor and a memory component is described. The volatile memory structure comprises the memory component formed on a substrate, wherein a first shape comprising one or more pointed edges is formed on a first surface of the memory component. The volatile memory structure further comprises transistor formed on the substrate and electrically coupled to the memory component to share operating voltage, wherein operating voltage applied to the transistor flows to the memory component.

Claims (37)

1. A method, comprising:

forming a memory component on a substrate, wherein a first shape is a “V” shaped faceted edge that comprises a plurality of pointed edges formed on a first surface of the memory component; and

forming a transistor on the substrate and electrically coupled to the memory component to share operating voltage, wherein operating voltage applied to the transistor flows to the memory component.

2. The method of claim 1 , wherein the plurality of pointed edges of the first shape are formed employing an oxide material.

3. The method of claim 1 , further comprising:

covering the memory component and the transistor with a dielectric layer.

4. The method of claim 1 , further comprising:

covering the memory component and the transistor with a dielectric layer and

covering the dielectric layer with a metal gate.

5. The method of claim 1 , further comprising:

forming a dielectric layer that covers the memory component;

forming a metal gate that covers the dielectric layer; and

forming a top spacer layer that covers the metal gate.

6. The method of claim 1 , further comprising:

forming a source region at a second portion of the memory component and the transistor, wherein the source region comprising a first material that electrically couples the memory component to the transistor.

7. The method of claim 6 , wherein the source region further comprises a semiconductor material selected from a group consisting of a silicon, an alloy, a germanium, a III-V compound semiconductor, and a II-IV semiconductor.

8. The method of claim 1 , wherein the memory component is a resistive random-access memory component.

9. A method, comprising:

forming a transistor and a memory component on a substrate; and

forming a source region at a second portion of the memory component and the transistor, wherein the memory component, the second portion of the transistor, and the source region comprising a first material that electrically couples the memory component and the transistor, wherein operating voltage applied to the transistor flows to the memory component, and wherein the source region further comprises a semiconductor material selected from a group consisting of a silicon, an alloy, a germanium, a III-V compound semiconductor, and a II-IV semiconductor.

10. The device of claim 9 , further comprising:

forming a faceted edge on a first surface of the memory component.

11. The method of claim 9 , further comprising:

forming a “V” shaped faceted edge on a first surface of the memory component, wherein the faceted edge comprises a plurality of pointed edges.

12. The method of claim 9 , further comprising:

forming one or more-pointed edges on a first surface of memory component employing an oxide material.

13. The method of claim 9 , further comprising:

forming a dielectric layer that covers the memory component and the transistor.

14. The method of claim 9 , further comprising:

forming a dielectric layer that covers the memory component and the transistor; and

forming a metal gate that covers the dielectric layer.

15. The method of claim 9 , further comprising:

forming a dielectric layer that covers the memory component and the transistor;

forming a metal gate that covers the dielectric layer; and

forming a top spacer layer that covers the metal gate.

16. The method of claim 9 , wherein the memory component is a resistive random-access memory component.

17. The method of claim 9 , wherein the transistor is a vertical field-effect transistor.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 31, 2020
From: CHENG, KANGGUO; LEE, CHOONGHYUN; LI, JUNTAO; XU, PENG
To: INTERNATIONAL BUSINESS MACHINES CORPORATION
Reel/Frame 052273/0097 →
Continuity (2)
Division 16170888 · Oct 25, 2018
Related Publication 20200227633A1 · Jul 16, 2020