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    • 8. 发明申请
    • Method for fabricating a sublithographic contact structure in a memory cell
    • 在存储单元中制造亚光刻接触结构的方法
    • US20060189045A1
    • 2006-08-24
    • US11331771
    • 2006-01-13
    • Danny Pak-Chum ShumArmin Tilke
    • Danny Pak-Chum ShumArmin Tilke
    • H01L21/339
    • H01L45/1233G11C13/0004G11C13/0069G11C2013/0078H01L21/76804H01L21/76816H01L45/06H01L45/126H01L45/1293H01L45/1675H01L45/1683H01L45/1691
    • A method for fabricating a sublithographic contact structure in a memory cell in a semiconductor component is disclosed. In one embodiment, the method includes forming a trench structure having first spacers on walls of the trench structure, a first sublithographic dimension being formed in a region between the first spacers situated on mutually opposite walls in at least one direction parallel to a wafer surface. The insulator layer is etched in a region between the first spacers situated on mutually opposite walls for forming a first passage hole, the first spacers being used as an etching mask. A layer made of an electrically conductive material is deposited at least over the first passage hole and partially etching back the layer made of the electrically conductive material in the first passage hole forming a first contact electrode. A layer made of a resistance change material is deposited over the first passage hole and partially etching back the resistance change material in the first passage hole forming a resistance change material zone.
    • 公开了一种在半导体部件的存储单元中制造亚光刻接触结构的方法。 在一个实施例中,该方法包括在沟槽结构的壁上形成具有第一间隔物的沟槽结构,第一亚光刻尺寸形成在平行于晶片表面的至少一个方向上位于相互相对的壁上的第一间隔件之间的区域中。 在位于相互相对的壁上的第一间隔件之间的区域中蚀刻绝缘体层,以形成第一通孔,第一间隔件用作蚀刻掩模。 由导电材料制成的层至少沉积在第一通孔上,并且在形成第一接触电极的第一通孔中部分地蚀刻由导电材料制成的层。 由电阻变化材料制成的层沉积在第一通孔上,并且部分地蚀刻形成电阻变化材料区的第一通孔中的电阻变化材料。