Invention Grant
- Patent Title: Bipolar multistate nonvolatile memory
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Application No.: US14259411Application Date: 2014-04-23
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Publication No.: US08889492B2Publication Date: 2014-11-18
- Inventor: Tony P. Chiang
- Applicant: Intermolecular Inc. , Kabushiki Kaisha Toshiba , SanDisk 3D LLC
- Applicant Address: US CA San Jose JP Tokyo US CA Milpitas
- Assignee: Intermolecular, Inc.,Kabushiki Kaisha Toshiba,SanDisk 3D LLC
- Current Assignee: Intermolecular, Inc.,Kabushiki Kaisha Toshiba,SanDisk 3D LLC
- Current Assignee Address: US CA San Jose JP Tokyo US CA Milpitas
- Main IPC: H01L45/00
- IPC: H01L45/00

Abstract:
Embodiments generally include a method of forming a nonvolatile memory device that contains a resistive switching memory element that has an improved device switching capacity by using multiple layers of variable resistance layers. In one embodiment, the resistive switching element comprises at least three layers of variable resistance materials to increase the number of logic states. Each variable resistance layer may have an associated high resistance state and an associated low resistance state. As the resistance of each variable resistance layer determines the digital data bit that is stored, the multiple variable resistance layers per memory element allows for additional data storage without the need to further increase the density of nonvolatile memory devices. Typically, resistive switching memory elements may be formed as part of a high-capacity nonvolatile memory integrated circuit, which can be used in various electronic devices, such as digital cameras, mobile telephones, handheld computers, and music players.
Public/Granted literature
- US20140235029A1 Bipolar Multistate Nonvolatile Memory Public/Granted day:2014-08-21
Information query
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