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    • 7. 发明授权
    • Nonvolatile memory device and read method thereof
    • 非易失性存储器件及其读取方法
    • US08737129B2
    • 2014-05-27
    • US13355834
    • 2012-01-23
    • Changhyun LeeJungdal ChoiByeong-In Choe
    • Changhyun LeeJungdal ChoiByeong-In Choe
    • G11C16/10G11C16/26G11C16/34G11C11/56
    • G11C16/26G11C8/10G11C11/5628G11C11/5642G11C16/0483G11C16/10G11C16/3418G11C16/3436G11C16/3454G11C16/3459G11C29/00
    • A nonvolatile memory device has improved reliability by compensating a threshold voltage of a flash memory cell. A nonvolatile memory device includes a memory cell array and a voltage generator for supplying a select read voltage to a select word line and an unselect read voltage to unselected word lines when a read operation is performed, and supplying a verify voltage to a select word line and the unselect read voltage to unselected word lines when a program operation is performed. The voltage generator supplies a first unselect read voltage to at least one between an upper word line and a lower word line adjacent to the select word line when the program operation is performed, and supplies a second unselected read voltage to at least one between the upper word line and the lower word line adjacent to the select word line when the read operation is performed.
    • 非易失性存储器件通过补偿闪存单元的阈值电压而提高了可靠性。 非易失性存储器件包括:存储单元阵列和电压发生器,用于在执行读取操作时将选择读取电压提供给选择字线,并将未选择读取电压提供给未选择的字线;以及将验证电压提供给选择字线 以及当执行编程操作时,对未选字线的取消选择读取电压。 电压发生器在执行编程操作时将第一未读选择电压提供给与选择字线相邻的上字线和下字线之间的至少一个,并且将第二未选择读电压提供给上 当执行读操作时,字线和与选择字线相邻的下字线。
    • 8. 发明申请
    • THREE-DIMENSIONAL SEMICONDUCTOR MEMORY DEVICES
    • 三维半导体存储器件
    • US20140042520A1
    • 2014-02-13
    • US14057380
    • 2013-10-18
    • Changhyun LeeByoungkeun SonHyejin Cho
    • Changhyun LeeByoungkeun SonHyejin Cho
    • H01L29/792
    • H01L27/11582H01L27/11565H01L27/1157H01L29/7926
    • Three-dimensional (3D) nonvolatile memory devices include a substrate having a well region of second conductivity type (e.g., P-type) therein and a common source region of first conductivity type (e.g., N-type) on the well region. A recess extends partially (or completely) through the common source region. A vertical stack of nonvolatile memory cells on the substrate includes a vertical stack of spaced-apart gate electrodes and a vertical active region, which extends on sidewalls of the vertical stack of spaced-apart gate electrodes and on a sidewall of the recess. Gate dielectric layers extend between respective ones of the vertical stack of spaced-apart gate electrodes and the vertical active region. The gate dielectric layers may include a composite of a tunnel insulating layer, a charge storage layer, a relatively high bandgap barrier dielectric layer and a blocking insulating layer having a relatively high dielectric strength.
    • 三维(3D)非易失性存储器件包括其中具有第二导电类型(例如,P型)的阱区和在该区域上具有第一导电类型(例如,N型)的公共源极区的衬底。 凹部部分(或完全)延伸穿过公共源区域。 衬底上的垂直堆叠的非易失性存储器单元包括间隔开的栅电极的垂直堆叠和垂直有源区,该垂直有源区延伸在间隔开的栅电极的垂直堆叠的侧壁上并在凹槽的侧壁上延伸。 栅极电介质层在相互间隔开的栅电极的垂直叠层和垂直有源区之间延伸。 栅极电介质层可以包括隧道绝缘层,电荷存储层,相对高的带隙势垒介电层和具有相对高的介电强度的阻挡绝缘层的复合材料。