Dynamic RAM and method of manufacturing the same
    7.
    发明授权
    Dynamic RAM and method of manufacturing the same 失效
    动态RAM及其制造方法

    公开(公告)号:US5559350A

    公开(公告)日:1996-09-24

    申请号:US350156

    申请日:1994-11-29

    IPC分类号: H01L21/8242 H01L27/108

    CPC分类号: H01L27/10861 H01L27/10829

    摘要: A dynamic RAM array comprises a substrate, a plurality of semiconductor island regions and a trench region formed on the substrate, each island region being surrounded by the trench region, and the trench region having wider trench portions and narrower trench portions, an insulating layer formed on the trench region, capacitors refilled in the wider trench portions, each capacitor having a plate electrode, a capacitor insulating layer and a storage node electrode, refilled layers formed in the narrower trench portion, for forming field isolation regions, MOS transistors formed on the island region, each MOS transistor having a source, a drain and a gate as word line, one of the source and drain being coupled with the storage node electrode, and bit lines perpendicular to the word line, being coupled with the other of the source and drain.

    摘要翻译: 动态RAM阵列包括基板,多个半导体岛区域和形成在基板上的沟槽区域,每个岛区域被沟槽区域包围,并且沟槽区域具有较宽的沟槽部分和较窄的沟槽部分,形成绝缘层 在沟槽区域中,在较宽的沟槽部分中重新填充电容器,每个电容器具有平板电极,电容器绝缘层和存储节点电极,形成在较窄沟槽部分中的再填充层,用于形成场隔离区域,形成在 岛区域,每个MOS晶体管具有源极,漏极和栅极作为字线,源极和漏极中的一个与存储节点电极耦合,以及垂直于字线的位线,与源极中的另一个耦合 和排水。