Invention Grant
- Patent Title: Selected word line dependent select gate voltage during program
- Patent Title (中): 程序中所选字线相关选择栅极电压
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Application No.: US13430502Application Date: 2012-03-26
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Publication No.: US08638608B2Publication Date: 2014-01-28
- Inventor: Chun-Hung Lai , Deepanshu Dutta , Shinji Sato , Gerrit Jan Hemink
- Applicant: Chun-Hung Lai , Deepanshu Dutta , Shinji Sato , Gerrit Jan Hemink
- Applicant Address: US TX Plano
- Assignee: SanDisk Technologies Inc.
- Current Assignee: SanDisk Technologies Inc.
- Current Assignee Address: US TX Plano
- Agency: Vierra Magen Marcus LLP
- Main IPC: G11C11/34
- IPC: G11C11/34

Abstract:
Methods and devices for operating non-volatile storage are disclosed. One or more programming conditions depend on the location of the word line that is selected for programming, which may reduce or eliminate program disturb. The voltage applied to the gate of a select transistor of a NAND string may depend on the location of the selected word line. This could be either a source side or drain side select transistor. This may prevent or reduce program disturb that could result due to DIBL. This may also prevent or reduce program disturb that could result due to GIDL. A negative bias may be applied to the gate of a source side select transistor when programming at least some of the word lines. In one embodiment, progressively lower voltages are used for the gate of the drain side select transistor when programming progressively higher word lines.
Public/Granted literature
- US20130250690A1 SELECTED WORD LINE DEPENDENT SELECT GATE VOLTAGE DURING PROGRAM Public/Granted day:2013-09-26
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