2-terminal switching device
AssigneeSamsung Electronics Co., Ltd.
InventorsKyung-min Kim, Young-bae Kim, Eun-ju Cho
Life of this patent
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Abstract
A two-terminal switching device includes a resistive switching element, a diode, and a resistive circuit. The resistive switching element switches between low and high resistance states based on a switching signal and maintain a switched resistance state until another switching signal is received. The diode is connected to the resistive switching element and blocks the switching signal from being transmitted to an output terminal. The resistive circuit allows the switching signal blocked by the diode to flow to the reference potential.
Claims21
A two-terminal switching device comprising:
- a first terminal configured to receive a switching signal and a main signal;
- a resistive switching element coupled to the first terminal and configured to switch into a low resistance state or a high resistance state according to the switching signal and to maintain a switched resistance state until another switching signal is received;
- a second terminal configured to output the main signal received by the first terminal when the resistive switching element is in the low resistance state;
- a diode disposed between the resistive switching element and second terminal and configured to block the switching signal from being transmitted to the second terminal;
- and
- a resistive circuit disposed between a node and a reference potential and configured to allow the switching signal blocked by the diode to flow to the reference potential, the node between the resistive switching element and the diode,
- wherein the resistive switching element switches
- from the low resistance state to the high resistance state at a voltage less than or equal to a first negative voltage, and
- from the high resistance state to the low resistance state at a voltage less than or equal to a second negative voltage.
A switching system comprising:
- a controller configured to output a main signal and a switching signal;
- and
- a switching device configured to switch into an on state or an off state according to the switching signal and output or block the main signal according to the switched state of the switching device, the switching device comprising
- a resistive switching element configured to switch between a low resistance state and a high resistance state according to the switching signal and to maintain a switched resistance state until another switching signal is received;
- a diode coupled to the resistive switching element and configured to block the switching signal from being output;
- and
- a resistive circuit disposed between a node and a reference potential and configured to allow the switching signal blocked by the diode to flow into the reference potential, the node between the resistive switching element and the diode,
- wherein the resistive switching element switches
- from the low resistance state to the high resistance state at a voltage less than or equal to a first negative voltage, and
- from the high resistance state to the low resistance state at a voltage less than or equal to a second negative voltage.
A method of controlling a switching device including a resistive switching element configured to switch between a low resistance state and a high resistance state according to a switching signal and to maintain a switched resistance state until another switching signal is received, a diode which is coupled to the resistive switching element, and a resistive circuit disposed between a node, between the resistive switching element and the diode, and a reference potential, the method comprising:
- applying the switching signal having a negative voltage to an input terminal of the switching device to switch the resistance state of the resistive switching element, the switching signal being an enabling signal to enable the transmission of a main signal;
- and
- applying the main signal having a positive voltage to the input terminal of the switching device,
- wherein the resistive switching element and the diode are provided in series and are configured to selectively output the main signal to the output terminal of the switching device depending on the resistance state of the resistive switching element,
- wherein the negative voltage of the switching signal blocks output of the switching signal to an output terminal of the switching device after the resistance state is switched by the switching signal, and
- wherein the positive voltage of the main signal allows the main signal not to change the resistance state of the resistive switching element.
Dependencies are inferred from the claim text.