Multi-value recording phase-change memory device,...

Active solid-state devices (e.g. – transistors – solid-state diode – Bulk effect device – Bulk effect switching in amorphous material

Reexamination Certificate

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Details

C257S004000, C257S005000, C257S003000, C438S102000, C438S103000

Reexamination Certificate

active

07932508

ABSTRACT:
A multi-value recording phase-change memory device that can stably record multi-value information, and that can reproduce information with high reliability, comprises a first electrode layer26, a second electrode layer28, and a memory layer30provided between the first and second electrode layers26and28and containing a phase-change material layer formed from a phase-change material which is stable in either an amorphous phase or a crystalline phase at room temperature, wherein the memory layer30includes a plurality of mutually isolated sub-memory layers32, 34, 36, and38between the first and second electrode layers26and28.

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Notice of Allowance mailed Apr. 20, 2010, U.S. Appl. No. 11/905,748.

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