Invention Grant
- Patent Title: Voltage kick for improved erase efficiency in a memory device
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Application No.: US17572292Application Date: 2022-01-10
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Publication No.: US11901015B2Publication Date: 2024-02-13
- Inventor: Xuan Tian , Liang Li
- Applicant: SanDisk Technologies LLC
- Applicant Address: US TX Addison
- Assignee: SANDISK TECHNOLOGIES LLC
- Current Assignee: SANDISK TECHNOLOGIES LLC
- Current Assignee Address: US TX Addison
- Agency: Dickinson Wright PLLC
- Main IPC: G11C16/04
- IPC: G11C16/04 ; G11C16/14 ; G11C16/32 ; G11C16/30 ; G11C16/26

Abstract:
The memory device includes a plurality of memory cell that arranged in an array, which includes a plurality of channels that are in electrical communication with a source line. The memory device also includes a controller that is configured to erase the memory cells in at least one erase pulse. During the at least one erase pulse, the controller is configured to drive the source line to an elevated voltage that is equal to an erase voltage Vera plus a kick voltage V_kick for a duration t_kick. The controller is then configured to reduce the voltage of the source line to the erase voltage Vera such that a voltage of the channel remains elevated during the entire erase pulse, including after the voltage of the source line has been reduced to the erase voltage Vera.
Public/Granted literature
- US20230223086A1 VOLTAGE KICK FOR IMPROVED ERASE EFFICIENCY IN A MEMORY DEVICE Public/Granted day:2023-07-13
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