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US 9,852,789 B2Granted
Transient current-protected threshold switching devices systems and methods
AssigneeIntel Corporation
InventorsDavide Mantegazza, Sandeep Guliani, Balaji Srinivasan, Kiran Pangal
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Abstract
Threshold switching devices demonstrating transient current protection through both insulation and repair current mechanisms, including associated systems and methods, are provided and discussed.
Claims22
A computing system, comprising:
- a memory array, further comprising:
- a plurality of phase change memory (PCM) cells arranged in an array;
- a plurality of word lines (WLs) coupled to groups of PCM cells across the array;
- and
- a plurality of bit lines (BLs) coupled to groups of PCM cells across the array, such that each PCM cell is addressed in the array by a unique combination of a WL and a BL;
- and
- circuitry electrically coupled to each WL and to each BL, the circuitry configured to:
- generate memory control commands;
- address the PCM cells in the array;
- and
- read a state of each PCM cell in the array by:
- selecting a PCM cell to be read having a selected BL (BLS) a selected WL (WLS) that uniquely addresses the selected PCM cell;
- applying a WL read bias voltage (WLV) to the WLS;
- uncoupling the WLS from the WLV to float the WLS;
- applying a BL read bias voltage (BLV) to the BLS, such that the BLV and the WLV at the floating WLS activate the PCM cell;
- and
- recoupling the WLS to the WLV to deliver a repair current to the PCM cell.
14 more elements
A switching device, comprising:
- a phase change material;
- a word line (WL);
- a bit line (BL) coupled to the WL across the phase change material;
- and
- circuitry configured to:
- activate the device by floating the WL and applying a BL read bias voltage (BLV);
- and
- deliver a repair current by recoupling the WL to a WL read bias voltage (WLV).
5 more elements
Dependencies are inferred from the claim text.