Resistive memory device
AssigneeMicron Technology, Inc.
InventorsJun Liu, Glen Hush, Mike Violette, Mark Ingram
Life of this patent
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Abstract
A system having a memory cell. In certain embodiments, the memory cell includes a resistive memory element, an access transistor having a gate, a first terminal, and a second terminal, and a control transistor having a gate, a first terminal, and a second terminal. The first terminal of the access transistor may be coupled to the resistive memory element, and the gate of the access transistor may be coupled to the gate of the control transistor. Additionally, the first terminal of the control transistor may be coupled to the resistive memory element.
Claims16
A system, comprising:
- a memory cell comprising:
- a resistive memory element;
- an access transistor having a gate, a first terminal, and a second terminal, wherein the first terminal of the access transistor is coupled to the resistive memory element;
- and
- a control transistor having a gate, a first terminal, and a second terminal, wherein the gate of the access transistor is coupled to the gate of the control transistor and the first terminal of the control
- transistor is coupled to the resistive memory element, and a top plate coupled to the resistive element, wherein the resistive memory element is disposed in series between the top plate and the access transistor;
- and
- a digit line coupled to the second terminal of the control transistor.
A method of reading a resistive memory element, comprising:
- energizing a gate of a control transistor, which is different from an access transistor coupled to the resistive memory element an access transistor;
- if the resistance of the resistive memory element is high, conducting a majority current through the control transistor in a first direction;
- and
- if the resistance of the resistive memory element is low, conducting the majority current through the control transistor in a second direction different from the first direction.
Dependencies are inferred from the claim text.