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    • 3. 发明申请
    • Phase change memory device and method of fabricating the same
    • 相变存储器件及其制造方法
    • US20070210334A1
    • 2007-09-13
    • US11698155
    • 2007-01-26
    • Young-Soo LimYong-Sun KoHyuk-Jin KwonJae-Seung Hwang
    • Young-Soo LimYong-Sun KoHyuk-Jin KwonJae-Seung Hwang
    • H01L31/00
    • H01L45/143H01L27/2436H01L45/06H01L45/126H01L45/144H01L45/1675
    • Example embodiments relate to a semiconductor memory device and a method of fabricating the same. Other example embodiments relate to a phase change memory device and a method of fabricating the same. There are provided a phase change memory device and a method of fabricating the same for improving or maximizing a production yield. The method comprises: after first removing a first hard mask layer used to form a contact pad electrically connected to a semiconductor substrate, forming a lower electrode to be electrically connected to the contact pad through a first contact hole in a first interlayer insulating layer formed on the contact pad and to have a thickness equal or similar to a thickness of the first interlayer insulating layer; and forming a phase change layer and an upper electrode on the lower electrode. Because change of the resistance value of the lower electrode is reduced or prevented, which has been caused due to a non-uniform thickness of a conventional first hard mask layer, a production yield may be improved.
    • 示例性实施例涉及半导体存储器件及其制造方法。 其他示例性实施例涉及相变存储器件及其制造方法。 提供了一种相变存储器件及其制造方法,用于改善或最大化产量。 该方法包括:在首先去除用于形成与半导体衬底电连接的接触焊盘的第一硬掩模层之后,通过形成在第一层间绝缘层上的第一层间绝缘层中的第一接触孔形成下电极以与接触焊盘电连接 所述接触焊盘的厚度等于或类似于所述第一层间绝缘层的厚度; 并在下电极上形成相变层和上电极。 由于由于常规的第一硬掩模层的厚度不均匀而导致的下部电极的电阻值的变化被降低或防止,所以可以提高生产率。
    • 9. 发明授权
    • Phase changeable structure and method of forming the same
    • 相变结构及其形成方法
    • US07569430B2
    • 2009-08-04
    • US11674580
    • 2007-02-13
    • Jun-Soo BaeHideki HoriiJi-Hye YiYoung-Soo Lim
    • Jun-Soo BaeHideki HoriiJi-Hye YiYoung-Soo Lim
    • H01L21/82
    • H01L45/1675H01L45/06H01L45/1233H01L45/144
    • The present invention relates to a phase changeable structure having decreased amounts of defects and a method of forming the phase changeable structure. A stacked composite is first formed by (i) forming a phase changeable layer including a chalcogenide is formed on a lower electrode, (ii) forming an etch stop layer having a first etch rate with respect to a first etching material including chlorine on the phase changeable layer, and (iii) forming a conductive layer having a second etch rate with respect to the first etching material on the etch stop layer. The conductive layer of the stacked composite is then etched using the first etching material to form an upper electrode. The etch stop layer and the phase changeable layer are then etched using a second etching material that is substantially flee of chlorine to form an etch stop pattern and a phase changeable pattern, respectively.
    • 本发明涉及具有减少的缺陷量的相变结构和形成相变结构的方法。 首先通过(i)在下电极上形成包括硫族化物的相变层来形成堆叠复合体,(ii)形成相对于在相上包括氯的第一蚀刻材料具有第一蚀刻速率的蚀刻停止层 可变层,和(iii)形成相对于蚀刻停止层上的第一蚀刻材料具有第二蚀刻速率的导电层。 然后使用第一蚀刻材料蚀刻层叠复合体的导电层以形成上电极。 然后使用基本上不含氯的第二蚀刻材料来蚀刻蚀刻停止层和相变层,以分别形成蚀刻停止图案和相变图案。