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US 7,923,724 B2Granted
Phase change memory that switches between crystalline phases
AssigneeOvonyx, Inc.
InventorWolodymyr Czubatyj
Life of this patent
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Abstract
A phase change memory may transition between two crystalline states. In one embodiment, the phase change material is a chalcogenide which transitions between face centered cubic and hexagonal states. Because these states are more stable, they are less prone to drift than the amorphous state conventionally utilized in phase change memories.
Claims13
A phase change memory comprising:
- a pair of conductors;
- and
- a phase change memory material programmable to two different crystalline states, said material located between said conductors.
A phase change memory comprising:
- a pair of conductors;
- and
- a phase change memory material having two different stable crystalline states, said material located between said conductors.
Dependencies are inferred from the claim text.