Field effect devices having a gate controlled via a nanotube switching element
First Claim
1. A non-volatile nanotube transistor device, comprising:
- a source region and a drain region each in electrical communication with a respective terminal;
a channel region disposed between the source region and the drain region;
a gate structure disposed over the channel region and having a release structure, a switch plate disposed above the channel region, a nanotube switching element disposed between the release structure and the switch plate, a first control terminal in electrical communication with the release structure and a second control terminal in electrical communication with the nanotube switching element;
wherein the nanotube switching element is responsive to electrical stimulus on the first control terminal and the second control terminal so that the nanotube switching element is capable of being electromechanically deflected into a first non-volatile positional state corresponding to a closed electrical communication path between the nanotube switching element and the switch plate and is capable of a second, substantially non-deflected, nonvolatile positional state corresponding to an open electrical communication path between the nanotube switching element and the switch plate; and
wherein, when the nanotube element is in the first positional state corresponding to a closed electrical communication path between the nanotube switching element and the switch plate, the device is responsive to electrical stimulus on at least the second control terminal and the terminal corresponding to the source, and the second control terminal is a gate electrode capable of inducing the channel region to form a conductive path between the source region and the drain region.
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Abstract
Field effect devices having a gate controlled via a nanotube switching element. Under one embodiment, a non-volatile transistor device includes a source region and a drain region of a first semiconductor type of material and each in electrical communication with a respective terminal. A channel region of a second semiconductor type of material is disposed between the source and drain region. A gate structure is disposed over an insulator over the channel region and has a corresponding terminal. A nanotube switching element is responsive to a first control terminal and a second control terminal and is electrically positioned in series between the gate structure and the terminal corresponding to the gate structure. The nanotube switching element is electromechanically operable to one of an open and closed state to thereby open or close an electrical communication path between the gate structure and its corresponding terminal. When the nanotube switching element is in the closed state, the channel conductivity and operation of the device is responsive to electrical stimulus at the terminals corresponding to the source and drain regions and the gate structure.
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Citations
30 Claims
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1. A non-volatile nanotube transistor device, comprising:
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a source region and a drain region each in electrical communication with a respective terminal; a channel region disposed between the source region and the drain region; a gate structure disposed over the channel region and having a release structure, a switch plate disposed above the channel region, a nanotube switching element disposed between the release structure and the switch plate, a first control terminal in electrical communication with the release structure and a second control terminal in electrical communication with the nanotube switching element; wherein the nanotube switching element is responsive to electrical stimulus on the first control terminal and the second control terminal so that the nanotube switching element is capable of being electromechanically deflected into a first non-volatile positional state corresponding to a closed electrical communication path between the nanotube switching element and the switch plate and is capable of a second, substantially non-deflected, nonvolatile positional state corresponding to an open electrical communication path between the nanotube switching element and the switch plate; and wherein, when the nanotube element is in the first positional state corresponding to a closed electrical communication path between the nanotube switching element and the switch plate, the device is responsive to electrical stimulus on at least the second control terminal and the terminal corresponding to the source, and the second control terminal is a gate electrode capable of inducing the channel region to form a conductive path between the source region and the drain region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A memory array capable of storing multiple memory states, the array having multiple non-volatile transistor devices capable of storing logic values, each device comprising:
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a source region and a drain region each in electrical communication with a respective terminal; a channel region disposed between the source and drain region; a gate structure disposed over the channel region and having a release structure, a switch plate disposed above the channel region, a nanotube switching element disposed between the release structure and the switch plate, a first control terminal in electrical communication with the release structure and a second control terminal in electrical communication with the nanotube switching element; wherein the nanotube switching element is responsive to electrical stimulus on the first control terminal and the second control terminal so that the nanotube switching element is capable of being electromechanically deflected into a first non-volatile positional state corresponding to a closed electrical communication path between the nanotube switching element and the switch plate and is capable of a second, substantially non-deflected, nonvolatile positional state corresponding to an open electrical communication path between the nanotube switching element and the switch plate; and wherein, when the nanotube element is in the first positional state corresponding to a closed electrical communication path between the nanotube switching element and the switch plate, the device is responsive to electrical stimulus on at least the second control terminal and the terminal corresponding to the source, and the second control terminal is a gate electrode capable of inducing the channel region to form a conductive path between the source region and the drain region. - View Dependent Claims (30)
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Specification