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    • 53. 发明专利
    • Semiconductor memory device
    • 半导体存储器件
    • JP2014179142A
    • 2014-09-25
    • JP2013052396
    • 2013-03-14
    • Toshiba Corp株式会社東芝
    • MAEJIMA HIROSHI
    • G11C16/06G11C16/04
    • G11C16/26G11C11/5642G11C16/0483G11C16/06G11C16/08G11C16/30
    • PROBLEM TO BE SOLVED: To provide a semiconductor memory device capable of improving operation reliability.SOLUTION: A semiconductor device is provided with a sense amplifier which includes a bus LBUS, a first and a second latch circuits SDL and LDL, and a third transistor. The first latch circuit SDL includes a first transistor 60 connected to the bus, and the second latch circuit LDL includes a second transistor 70 connected to the bus. When data is transferred from the first latch circuit SDL to the second latch circuit LDL, the third transistor 30 precharges the bus (LBUS) to a potential (Vclh-Vt) that is lower than a power supply voltage VDDSA of the first and the second latch circuits, by application of a first voltage Vclh, which is lower than the power supply voltage, to a gate. Then, a second and a third voltages Vclm and Vcll that are lower than the power supply voltage are applied to gates of the first and the second transistors 60 and 70, respectively.
    • 要解决的问题:提供能够提高操作可靠性的半导体存储器件。解决方案:半导体器件设置有包括总线LBUS,第一和第二锁存电路SDL和LDL以及第三晶体管的读出放大器。 第一锁存电路SDL包括连接到总线的第一晶体管60,并且第二锁存电路LDL包括连接到总线的第二晶体管70。 当数据从第一锁存电路SDL传送到第二锁存电路LDL时,第三晶体管30将总线(LBUS)预充电到低于第一和第二锁存电路LDL的电源电压VDDSA的电位(Vclh-Vt) 锁存电路通过施加低于电源电压的第一电压Vclh到门。 然后,分别向第一和第二晶体管60和70的栅极施加低于电源电压的第二和第三电压Vclm和Vcll。
    • 54. 发明专利
    • Semiconductor memory device and data write method of the same
    • 半导体存储器件及其数据写入方法
    • JP2014175022A
    • 2014-09-22
    • JP2013044206
    • 2013-03-06
    • Toshiba Corp株式会社東芝
    • MAEJIMA HIROSHI
    • G11C16/02G11C16/04
    • G11C16/3459G11C8/08G11C16/08
    • PROBLEM TO BE SOLVED: To provide a semiconductor memory device capable of improving operation speed and a data write method of the same.SOLUTION: A semiconductor memory device 1 of an embodiment includes: a plurality of memory cells MT that are laminated on a semiconductor substrate and include a charge storage layer and control gate; a plurality of word lines WL that connects the control gates of the plurality of memory cells in common; and control units 11 to 16 that perform programming and verification of data for each page to the memory cells. The control unit successively performs programming for a plurality of pages that are assigned to an identical word line and in addition, successively performs verification for the plurality of pages.
    • 要解决的问题:提供能够提高操作速度的半导体存储器件及其数据写入方法。一个实施例的半导体存储器件1包括:多个存储单元MT,其被层压在半导体衬底上 并且包括电荷存储层和控制栅极; 多个字线WL,其共同地连接多个存储单元的控制栅极; 以及对各存储单元执行每页的数据的编程和验证的控制单元11至16。 控制单元对分配给相同字线的多个页面进行连续的编程,另外对多个页面进行连续的验证。
    • 58. 发明专利
    • Semiconductor memory device
    • 半导体存储器件
    • JP2014063552A
    • 2014-04-10
    • JP2012208787
    • 2012-09-21
    • Toshiba Corp株式会社東芝
    • FUKUZUMI YOSHIAKI
    • G11C16/02G11C16/04H01L21/336H01L21/8247H01L27/115H01L29/788H01L29/792
    • G11C16/08G11C16/0483G11C16/10G11C29/028G11C2029/5002
    • PROBLEM TO BE SOLVED: To optimize the threshold voltage of a selection transistor.SOLUTION: A semiconductor memory device 10 includes: a plurality of memory units MU; and a control circuit 5 that controls the voltage of the plurality of memory units MU. The control circuit 5 programs a selection transistor that is included in a first memory unit, by using a hot carrier that is generated by applying a first potential difference between the source and drain of the selection transistor. The control circuit 5 disables the programming of the selection transistor by setting a second potential difference between the source and drain of a selection transistor, which is included in a second memory unit that is connected in common to the same selection gate line as the first memory unit, to be smaller than the first potential difference.
    • 要解决的问题:优化选择晶体管的阈值电压。解决方案:半导体存储器件10包括:多个存储器单元MU; 以及控制多个存储单元MU的电压的控制电路5。 控制电路5通过使用通过施加选择晶体管的源极和漏极之间的第一电位差产生的热载流子来对包含在第一存储器单元中的选择晶体管进行编程。 控制电路5通过设置选择晶体管的源极和漏极之间的第二电位差来禁止选择晶体管的编程,该选择晶体管包括在与第一存储器相同的选择栅极线上共同连接的第二存储器单元中 单位,小于第一个电位差。