Lithium-compound based solid state memristor device for neuromorphic computing

US10903420B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-10903420-B2
Application numberUS-201916385799-A
CountryUS
Kind codeB2
Filing dateApr 16, 2019
Priority dateApr 16, 2019
Publication dateJan 26, 2021
Grant dateJan 26, 2021

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  1. Title

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  2. Abstract

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  5. First independent claim

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Abstract

Official abstract text for this publication.

A method is presented for obtaining a controllable resistance change in a battery-like device. The method includes depositing a first lithium-compound based layer in direct contact with a bottom electrode, depositing an electrolyte layer in direct contact with the first lithium-compound based layer, depositing a second lithium-compound based layer in direct contact with the electrolyte layer, forming a top electrode in direct contact with the second lithium-compound based layer, and applying electrical pulses between the top and bottom electrodes to trigger lithium ion transport to modify lithium concentrations in the first and second lithium-compound based layers.

First claim

Opening claim text (preview).

The invention claimed is: 1. A method for obtaining a controllable resistance change in a battery-like device, the method comprising: depositing a first lithium-compound based layer in direct contact with a bottom electrode; depositing an electrolyte layer in direct contact with the first lithium-compound based layer; depositing a second lithium-compound based layer in direct contact with the electrolyte layer; forming a top electrode in direct contact with the second lithium-compound based layer; and applying electrical pulses between the top and bottom electrodes to trigger lithium ion transport to modify lithium concentrations in the first and second lithium-compound based layers. 2. The method of claim 1 , wherein the first lithium-compound based layer is constructed from a same material as the second lithium-compound based layer. 3. The method of claim 1 , wherein the first and second lithium-compound based layers are lithium cobalt oxide (LiCoO 2 ) layers. 4. The method of claim 1 , wherein the electrolyte layer is a lithium phosphorous oxynitride (LiPON) layer. 5. The method of claim 1 , wherein the lithium ion transport modifies a resistivity of the first and second lithium-compound based layers. 6. The method of claim 5 , wherein modification of the resistivity enables control of a resistive switching behavior of the battery-like device. 7. The method of claim 5 , wherein the resistivity is symmetrically changed in both positive and negative directions.

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What does patent US10903420B2 cover?
A method is presented for obtaining a controllable resistance change in a battery-like device. The method includes depositing a first lithium-compound based layer in direct contact with a bottom electrode, depositing an electrolyte layer in direct contact with the first lithium-compound based layer, depositing a second lithium-compound based layer in direct contact with the electrolyte layer, f…
Who is the assignee on this patent?
IBM
What technology area does this patent fall under?
Primary CPC classification H01L45/085. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Jan 26 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).