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    • 31. 发明授权
    • Memory device
    • 内存设备
    • US09042161B2
    • 2015-05-26
    • US13230184
    • 2011-09-12
    • Jun KoyamaShunpei Yamazaki
    • Jun KoyamaShunpei Yamazaki
    • G11C11/24G11C5/02G11C11/404G11C11/4097G11C8/08
    • G11C11/407G11C5/025G11C8/08G11C11/404G11C11/4097
    • In a memory device, memory capacity per unit area is increased while a period in which data is held is ensured. The memory device includes a driver circuit provided over a substrate, and a plurality of memory cell arrays which are provided over the driver circuit and driven by the driver circuit. Each of the plurality of memory cell arrays includes a plurality of memory cells. Each of the plurality of memory cells includes a first transistor including a first gate electrode overlapping with an oxide semiconductor layer, and a capacitor including a source electrode or a drain electrode, a first gate insulating layer, and a conductive layer. The plurality of memory cell arrays is stacked to overlap. Thus, in the memory device, memory capacity per unit area is increased while a period in which data is held is ensured.
    • 在存储装置中,确保了保持数据的期间的每单位面积的存储容量。 存储器件包括设置在衬底上的驱动器电路和设置在驱动器电路上并由驱动器电路驱动的多个存储单元阵列。 多个存储单元阵列中的每一个包括多个存储单元。 多个存储单元中的每一个包括第一晶体管,其包括与氧化物半导体层重叠的第一栅电极,以及包括源电极或漏电极,第一栅绝缘层和导电层的电容器。 堆叠多个存储单元阵列以重叠。 因此,在存储装置中,确保了保持数据的期间的每单位面积的存储容量。