Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2005-09-20
2005-09-20
Araham, Fetsum (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S302000, C257S329000
Reexamination Certificate
active
06946704
ABSTRACT:
A semiconductor memory cell and forming method thereof utilizes a vertical select transistor to eliminate the problem of a large cell surface area in memory cells of the related art utilizing phase changes. A memory cell with a smaller surface area than the DRAM device of the related art is achieved by the present invention. Besides low power consumption during read operation, the invention also provides phase change memory having low power consumption even during write operation. Phase change memory also has stable read-out operation.
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Hanzawa Satoru
Itoh Kiyoo
Matsuoka Hideyuki
Sakata Takeshi
Terao Motoyasu
A. Marquez, Esq. Juan Carlos
Araham Fetsum
Fisher Esq. Stanley P.
Hitachi , Ltd.
Reed Smith LLP
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