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    • 8. 发明授权
    • Programming verification method of nonvolatile memory cell, semiconductor memory device, and portable electronic apparatus having the semiconductor memory device
    • 具有半导体存储器件的非易失性存储单元,半导体存储器件和便携式电子设备的编程验证方法
    • US07170791B2
    • 2007-01-30
    • US10848236
    • 2004-05-19
    • Yasuaki IwaseYoshifumi YaoiHiroshi IwataAkihide ShibataYoshinao MorikawaMasaru Nawaki
    • Yasuaki IwaseYoshifumi YaoiHiroshi IwataAkihide ShibataYoshinao MorikawaMasaru Nawaki
    • G11C16/06
    • H01L29/66825G11C11/22G11C16/0475G11C16/3454G11C16/3459H01L21/28273H01L21/28282H01L29/42332H01L29/66833H01L29/7887
    • A programming verification method of verifying programming of a nonvolatile memory cell, the method comprising at least the steps of: selecting first, second, . . . and n-th references corresponding to first, second, . . . and n-th threshold voltages specifying lower limit values of states 1, 2, . . . and n, respectively; applying a programming voltage to the nonvolatile memory cell; sensing a threshold voltage level of the nonvolatile memory cell; comparing the sensed threshold voltage level with the first reference to output a first result; comparing the threshold voltage level with one of the second and third references selected according to the first result to output a second result; and comparing the first and second results with an expectation value and, in the case where the first and second results are equal to the expectation value, indicating that the programming has succeeded, wherein the nonvolatile memory cell includes a gate electrode formed on a semiconductor layer via a gate insulating film, a channel region disposed under the gate electrode, a source and a drain as diffusion regions disposed on both sides of the channel region and having a conductive type opposite to that of the channel region, and memory functional units formed on both sides of the gate electrode and having the function of retaining charges.
    • 一种验证非易失性存储单元的编程的编程验证方法,所述方法至少包括以下步骤:选择第一,第二, 。 。 和对应于第一,第二的第n个引用。 。 。 和指定状态1,2的下限值的第n阈值电压。 。 。 和n; 向非易失性存储单元施加编程电压; 感测所述非易失性存储单元的阈值电压电平; 将感测到的阈值电压电平与第一参考值进行比较以输出第一结果; 将阈值电压电平与根据第一结果选择的第二和第三参考中的一个进行比较以输出第二结果; 以及将所述第一和第二结果与期望值进行比较,并且在所述第一和第二结果等于期望值的情况下,指示所述编程已成功,其中所述非易失性存储单元包括形成在半导体层上的栅电极 通过栅极绝缘膜,设置在栅极电极下方的沟道区域,作为扩散区域的源极和漏极,设置在沟道区域的两侧并且具有与沟道区域的导电类型相反的导电类型,以及存储功能单元 栅电极的两侧并具有保持电荷的功能。
    • 9. 发明授权
    • Semiconductor memory device and portable electronic apparatus
    • 半导体存储器件和便携式电子设备
    • US07102941B2
    • 2006-09-05
    • US10847625
    • 2004-05-18
    • Yoshifumi YaoiHiroshi IwataAkihide ShibataMasaru NawakiYasuaki IwaseYoshinao Morikawa
    • Yoshifumi YaoiHiroshi IwataAkihide ShibataMasaru NawakiYasuaki IwaseYoshinao Morikawa
    • G11C29/00G11C7/00
    • G11C16/0475G11C29/78
    • A semiconductor memory device including (A) a global line; (B) a memory array having (i) a local line, (ii) a decoder connected to the global line and the local line, and (iii) a memory block and a redundant block each constructed by a plurality of memory cells each having a gate electrode formed on a semiconductor layer via a gate insulating film, a channel region disposed below the gate electrode, a diffusion region disposed on both sides of the channel region and having a conductive type opposite to that of the channel region, and a memory functional unit formed on both sides of the gate electrode and having the function of retaining charges, the memory array having the function that when the decoder is usable, the global line is selectively connected to one of the local lines in accordance with address information and, when a defective block is included in the memory blocks and the decoder is unusable, the local line is separated from the global line and the defective block is replaced with the redundant block; and (C) a circuit for making the decoder of the defective block unusable and, only when the defective block is addressed, for making the decoder of the redundant block usable.
    • 一种半导体存储器件,包括(A)全局线; (B)具有(i)本地线的存储器阵列,(ii)连接到全局线和本地线的解码器,以及(iii)由多个存储器单元构成的存储器块和冗余块,每个存储器单元和 通过栅极绝缘膜形成在半导体层上的栅极电极,设置在栅极电极下方的沟道区域,设置在沟道区域两侧并且具有与沟道区域相反的导电类型的扩散区域;以及存储器 功能单元形成在栅电极的两侧并且具有保持电荷的功能,该存储器阵列具有当解码器可用时的功能,全局线根据地址信息有选择地连接到一条局部线路, 当存储块中包含有缺陷块并且解码器不可用时,本地线与全局线分离,并且用冗余块替换缺陷块; 以及(C)用于使缺陷块的解码器不可用的电路,并且仅当寻址缺陷块时,才能使冗余块的解码器可用。