Storage elements, structures and methods having edgeless features for programmable layer(s)

US9412945B1 · kind B1 · utility

Assignee

• Adesto Technologies Corporation · US

Inventors

• Kuei-Chang Tsai · Cupertino, US
• Jeffrey A. Shields · Sunnyvale, US
• Pascal Verrier · Longuenesse, FR

Key dates

• Filing date: Mar 14, 2013
• Grant date: Aug 9, 2016
• Expiry date: Oct 20, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N70/8833

Abstract

A storage element can include a bottom structure having at least one edge formed by a top surface and a side surface; a programmable layer, programmable between at least two different impedance states, and formed over the at least one edge and in contact with a portion of the bottom structure; an insulating layer that extends above the top surface of the bottom structure having an opening to the bottom structure formed therein, the opening having sloped sides; and at least one top layer formed within the opening and in contact with the programmable layer. Methods of making such a storage element are also disclosed.