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    • 7. 发明申请
    • Storage capacitor, array of storage capacitors and memory cell array
    • 存储电容器,存储电容器阵列和存储单元阵列
    • US20060202250A1
    • 2006-09-14
    • US11076021
    • 2005-03-10
    • Thomas HechtUwe SchroederTill SchloesserStefan JakschikAlejandro Avellan
    • Thomas HechtUwe SchroederTill SchloesserStefan JakschikAlejandro Avellan
    • H01L29/94
    • H01L27/10852H01L27/0207H01L28/82
    • A storage capacitor, suitable for use in a DRAM cell, is at least partially formed above a substrate surface and includes: a storage electrode at least partially formed above the substrate surface, a dielectric layer formed adjacent the storage electrode, and a counter electrode formed adjacent the dielectric layer, the counter electrode being isolated from the storage electrode by the dielectric layer, wherein the storage electrode is formed as a body which is delimited by at least one curved surface having a center of curvature outside the body in a plane parallel to the substrate surface. According to another configuration, the storage electrode is formed as a body which is delimited by at least one set having two contiguous planes, the two planes extending perpendicularly with respect to the substrate surface, a point of intersection of normals of the two planes lying outside the body.
    • 适用于DRAM单元的存储电容器至少部分地形成在衬底表面之上,并且包括:至少部分地形成在衬底表面上方的存储电极,与存储电极相邻形成的电介质层和形成的对电极 所述对置电极通过所述电介质层与所述存储电极隔离,其中所述存储电极形成为主体,所述主体由平行于所述电介质层的平面中的具有在所述主体外部的曲率中心的至少一个曲面限定 基材表面。 根据另一种结构,存储电极形成为由具有两个相邻平面的至少一组限定的主体,两个平面相对于基板表面垂直延伸,两个平面的法线相交点位于外部 身体。