发明名称 |
RAMPING PASS VOLTAGE TO ENHANCE CHANNEL BOOST IN MEMORY DEVICE, WITH TEMPERATURE COMPENSATION |
摘要 |
In a non-volatile storage system, one or more substrate channel regions for an unselected NAND string are boosted during programming to inhibit program disturb. A voltage applied to one or more unselected word lines associated with at least a first channel region is increased during a program pulse time period in which a program pulse is applied to a selected word line. The increase can be gradual, in the form of a ramp, or step-wise. The boosting level of the first channel region can be maintained. The increase in the voltage applied to the one or more unselected word lines can vary with temperature as well. Before the program pulse time period, the voltage applied to the one or more unselected word lines can be ramped up at a faster rate for a second, adjacent channel region than for the first channel region, to help isolate the channel regions. |
申请公布号 |
EP2715733(A1) |
申请公布日期 |
2014.04.09 |
申请号 |
EP20120725972 |
申请日期 |
2012.05.22 |
申请人 |
SANDISK TECHNOLOGIES INC. |
发明人 |
HEMINK, GERRIT, JAN;LEE, SHIN-CHUNG;KHANDELWAL, ANUBHAV;CHIN, HENRY;LIANG, GUIRONG;LEE, DANA |
分类号 |
G11C16/34;G11C16/10 |
主分类号 |
G11C16/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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