Invention Grant
- Patent Title: Memory cell mis-shape mitigation
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Application No.: US16414577Application Date: 2019-05-16
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Publication No.: US10910076B2Publication Date: 2021-02-02
- Inventor: Xiang Yang
- Applicant: SanDisk Technologies LLC
- Applicant Address: US TX Addision
- Assignee: SanDisk Technologies LLC
- Current Assignee: SanDisk Technologies LLC
- Current Assignee Address: US TX Addision
- Agency: Vierra Magen Marcus LLP
- Main IPC: G11C16/34
- IPC: G11C16/34 ; G11C16/10 ; G11C16/04 ; H01L27/11582 ; G11C16/14

Abstract:
Techniques are provided for mitigating issues of memory hole mis-shape. In one aspect, one or more control circuits are configured to program a group of non-volatile memory cells from an erase state to a plurality of programmed states using a first program parameter. The one or more control circuits measure threshold voltages of the group to determine a severity of memory hole mis-shape in the group. The one or more control circuits program the group from the erase state to the plurality of programmed states using a second program parameter selected based on the severity of the memory hole mis-shape in the group.
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