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    • 2. 发明授权
    • Dynamic semiconductor memory device
    • 动态半导体存储器件
    • US06891225B2
    • 2005-05-10
    • US09947908
    • 2001-09-07
    • Fumio HoriguchiTakashi Ohsawa
    • Fumio HoriguchiTakashi Ohsawa
    • H01L21/8242H01L27/10H01L27/108H01L27/12H01L29/76H01L29/94H01L31/062H01L31/113H01L31/119
    • H01L29/42392H01L27/108H01L27/10873H01L27/10876H01L27/1203
    • A semiconductor memory device comprising: a source diffusion layer formed on a semiconductor substrate and connected to a fixed potential line; a plurality of columnar semiconductor layers arranged in a matrix form and formed on the source diffusion layer and each having one end connected to the source diffusion layer commonly, the columnar semiconductor layer taking a first data state with a first threshold voltage that excessive majority carriers are accumulated in the columnar semiconductor layer, and a second data state with a second threshold voltage that excessive majority carriers are discharged from the columnar semiconductor layer; a plurality of drain diffusion layers each formed at the other end of the columnar semiconductor layer; a plurality of gate electrodes each opposed to the columnar semiconductor layer via a gate insulating film, and connected to the word line; a plurality of word lines each connected to corresponding the gate electrodes; and a plurality of bit lines each connected to corresponding the drain diffusion layers, the bit lines being perpendicular to the word lines.
    • 一种半导体存储器件,包括:源极扩散层,形成在半导体衬底上并连接到固定电位线; 多个柱状半导体层,其以矩阵形式布置并形成在所述源极扩散层上,并且各自的一端共同连接到所述源极扩散层,所述柱状半导体层具有第一阈值电压的第一数据状态,所述第一阈值电压为多数载流子 累积在柱状半导体层中的第二数据状态,以及具有第二阈值电压的第二数据状态,多数载流子从柱状半导体层放电; 多个漏极扩散层,各自形成在所述柱状半导体层的另一端; 多个栅极,每个栅极经由栅极绝缘膜与柱状半导体层相对,并连接到字线; 多个字线,各自连接到对应的栅电极; 以及多个位线,每个位线连接到对应的漏极扩散层,位线垂直于字线。