The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2022
Filed:
Nov. 26, 2019
Applicant:
Winbond Electronics Corp., Taichung, TW;
Inventor:
Shun-Li Lan, Taichung, TW;
Assignee:
WINBOND ELECTRONICS CORP., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 45/00 (2006.01);
U.S. Cl.
CPC ...
H01L 45/1675 (2013.01); H01L 45/1253 (2013.01); H01L 45/147 (2013.01);
Abstract
A method of forming a memory device includes forming a first electrode; forming a resistive switching layer over the first electrode; forming a dielectric layer over the resistive switching layer; forming a first opening in the dielectric layer, wherein the first opening passes through the dielectric layer and exposes the resistive switching layer; forming a first trench in the dielectric layer, wherein the first trench is directly above the first opening; and forming a second electrode having a step shape in the first opening and the first trench.