Invention Grant
- Patent Title: Non-volatile memory with countermeasure for program disturb including purge during precharge
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Application No.: US16840156Application Date: 2020-04-03
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Publication No.: US10832785B2Publication Date: 2020-11-10
- Inventor: Dengtao Zhao , Peng Zhang , Nan Lu , Deepanshu Dutta
- 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: Vierra Magen Marcus LLP
- Main IPC: G11C16/34
- IPC: G11C16/34 ; G11C16/12 ; G11C11/408 ; G11C16/04 ; G11C8/08

Abstract:
Program disturb is a condition that includes the unintended programming of a memory cell while performing a programming process for other memory cells. Such unintended programming can cause an error in the data being stored. In some cases, program disturb can result from electrons trapped in the channel being accelerated from one side of a selected word line to another side of the selected word line and redirected into the selected word line. To prevent such program disturb, it is proposed to open the channel from one side of a selected word line to the other side of the selected word line after a sensing operation for program verify and prior to a subsequent programming voltage being applied.
Public/Granted literature
- US20200234778A1 NON-VOLATILE MEMORY WITH COUNTERMEASURE FOR PROGRAM DISTURB INCLUDING PURGE DURING PRECHARGE Public/Granted day:2020-07-23
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