Static information storage and retrieval – Systems using particular element – Resistive
Reexamination Certificate
2008-03-18
2008-03-18
Nguyen, Van Thu (Department: 2824)
Static information storage and retrieval
Systems using particular element
Resistive
C365S121000, C365S100000
Reexamination Certificate
active
11179123
ABSTRACT:
A non-volatile memory cell includes a switch able resistor memory element in series with a switch device. An array of such cells may be programmed using only positive voltages. A method for programming such cells also supports a direct write of both 0 and 1 data states without requirement of a block erase operation, and is scaleable for use with relatively low voltage power supplies. A method for reading such cells reduces read disturb of a selected memory cell by impressing a read bias voltage having a polarity opposite that of a set voltage employed to change the switch able resistor memory element to a low resistance state. Such programming and read methods are well suited for use in a three-dimensional memory array formed on multiple levels above a substrate, particularly those having extremely compact array line drivers on very tight layout pitch.
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Nguyen Nam
Nguyen Van Thu
SanDisk 3D LLC
Zagorin O'Brien Graham LLP
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