Resistive memory and operating method thereof
AssigneeTaiwan Semiconductor Memory Inc.
InventorSteve S. Chung
Life of this patent
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Abstract
A memory includes a first select transistor, a first resistor, a second resistor and a first transistor. The first select transistor is configured to provide a first voltage signal to a first node. The first resistor is configured to store a first data bit according to the first voltage signal. A first terminal of the first resistor is coupled to the first node. The second resistor is configured to store a second data bit different from the first data bit according to the first voltage signal. A first terminal of the second resistor is coupled to the first node. The first transistor is configured to provide a first bit line signal output corresponding to the first data bit and the second data bit. A control terminal of the first transistor is coupled to the first node.
Claims19
A memory, comprising:
- a first select transistor configured to provide a first voltage signal to a first node;
- a first resistor configured to store a first data bit according to the first voltage signal, a first terminal of the first resistor being coupled to the first node;
- a second resistor configured to store a second data bit different from the first data bit according to the first voltage signal, a first terminal of the second resistor being coupled to the first node;
- a first transistor configured to provide a first bit line signal output corresponding to the first data bit and the second data bit, a control terminal of the first transistor being coupled to the first node;
- a first electrode;
- and
- a second electrode separated from the first electrode,
- wherein the first resistor corresponds to a first portion of a first dielectric layer and a second portion of a second dielectric layer,
- the second resistor corresponds to a third portion of the first dielectric layer and a fourth portion of the second dielectric layer,
- the second portion contacts the first portion and the first electrode, and
- the fourth portion contacts the third portion and the second electrode.
A memory, comprising:
- a first select transistor configured to provide a voltage signal to a first node, and comprising a first doped region;
- a first resistor configured to store a first data bit according to the voltage signal, a first terminal of the first resistor being coupled to the first node;
- a second resistor configured to store a second data bit different from the first data bit according to the voltage signal, a first terminal of the second resistor being coupled to the first node;
- a first transistor configured to output a first bit line signal corresponding to the first data bit and the second data bit, and comprising a first gate structure, a control terminal of the first transistor being coupled to the first node;
- a first electrode extending along a first direction, and configured to couple the first gate structure and the first doped region;
- a first dielectric layer extending along the first direction;
- a second dielectric layer extending along the first direction and sandwiched between the first dielectric layer and the first electrode;
- a second electrode contacting the first dielectric layer;
- and
- a third electrode contacting the first dielectric layer, and separated from the second electrode along the first direction.
An operating method of a memory, comprising:
- providing a first voltage signal having a first voltage level to a first node by a first select transistor;
- storing a first data bit by a first resistor, wherein a first terminal of the first resistor is coupled to the first node;
- storing a second data bit different from the first data bit by a second resistor, wherein a first terminal of the second resistor is coupled to the first node;
- storing a third data bit by a third resistor, wherein a first terminal of the third resistor is coupled to a second node;
- connecting each of a second terminal of the first resistor and a second terminal of the third resistor to a first word line signal;
- and
- outputting a bit line signal corresponding to the first data bit, the second data bit and the third data bit by a first transistor and a second transistor, wherein a control terminal of the first transistor is coupled to the first node, and a control terminal of the second transistor is coupled to the second node,
- wherein the first resistor corresponds to a first portion of a first dielectric layer and a second portion of a second dielectric layer,
- the second resistor corresponds to a third portion of the first dielectric layer and a fourth portion of the second dielectric layer,
- the second portion contacts the first portion and a first electrode, and
- the fourth portion contacts the third portion and a second electrode, and the second electrode is separated from the first electrode.
Dependencies are inferred from the claim text.