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    • 7. 发明申请
    • METHODS OF TRENCH AND CONTACT FORMATION IN MEMORY CELLS
    • 记忆细胞中TRENCH和接触形成的方法
    • US20080026561A1
    • 2008-01-31
    • US11459990
    • 2006-07-26
    • Miao Chih HsuTzung Ting HanMing Shang Chen
    • Miao Chih HsuTzung Ting HanMing Shang Chen
    • H01L21/4763
    • H01L21/76838H01L27/105H01L27/11521H01L27/11568
    • Methods of contact formation and memory arrays formed using such methods, which methods include providing a memory array having a plurality of bit lines disposed below a surface of a semiconductor substrate and a plurality of word lines disposed above the surface of the substrate and transverse to the bit lines; forming a hard mask material layer over the plurality of word lines, wherein an area above at least one of the bit lines and between two consecutive word lines is exposed below an opening in the hard mask material layer; forming an insulating material layer above the hard mask material layer; forming a contiguous trench and via pattern in the insulating material layer above the area such that a portion of the at least one bit line is exposed below the pattern; and forming an interconnection comprising a conductive material disposed in the contiguous trench and via pattern wherein the interconnection is in conductive contact with the exposed portion of the at least one bit line.
    • 使用这种方法形成的接触形成方法和存储器阵列,该方法包括提供存储阵列,该存储阵列具有设置在半导体衬底的表面下方的多个位线,以及设置在衬底的表面上方且横向于衬底的多个字线 位线 在所述多个字线上形成硬掩模材料层,其中在所述硬掩模材料层中的开口下方暴露位于所述位线中的至少一个之上并且在两个连续字线之间的区域; 在硬掩模材料层上形成绝缘材料层; 在所述区域上方的绝缘材料层中形成连续的沟槽和通孔图案,使得所述至少一个位线的一部分暴露在所述图案下方; 以及形成互连,其包括设置在所述连续沟槽中的导电材料和通孔图案,其中所述互连与所述至少一个位线的所述暴露部分导电接触。
    • 9. 发明授权
    • Manufacturing methods and structures of memory device
    • 存储器件的制造方法和结构
    • US07067374B2
    • 2006-06-27
    • US10911959
    • 2004-08-05
    • Tzung Ting HanYin Jen ChenMing Shang Chen
    • Tzung Ting HanYin Jen ChenMing Shang Chen
    • H01L21/336
    • H01L27/11526H01L27/105H01L27/11534
    • Dual spacer structures are fabricated such that sidewall spacers in a cell region are thinner than sidewall spacers in a periphery region. The fabricating method of memory includes forming a stop layer over the first semiconductor feature and the second semiconductor feature in cell region and periphery region. A spacer layer is formed over the stop layer in the periphery region. The spacer layer is patterned to form a spacer on a sidewall of the second semiconductor feature. An etching process is performed to form a resultant spacer on an interior sidewall of the opening between first semiconductor features. The stop layer on top surfaces of the first and second semiconductor features is removed.
    • 制造双间隔物结构,使得细胞区域中的侧壁间隔物比周边区域中的侧壁间隔物薄。 存储器的制造方法包括在单元区域和外围区域中的第一半导体特征和第二半导体特征之上形成停止层。 在周边区域中的停止层上形成间隔层。 图案化间隔层以在第二半导体特征的侧壁上形成间隔物。 执行蚀刻工艺以在第一半导体特征之间的开口的内侧壁上形成合成的间隔物。 去除第一和第二半导体特征的顶表面上的停止层。