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    • 72. 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。
    • 74. 发明授权
    • Method of forming a recess channel trench pattern, and fabricating a recess channel transistor
    • 形成凹槽沟槽图案的方法,以及制造凹槽通道晶体管
    • US07205199B2
    • 2007-04-17
    • US10917615
    • 2004-08-13
    • Jong-Chul ParkYong-Sun KoTae-Hyuk Ahn
    • Jong-Chul ParkYong-Sun KoTae-Hyuk Ahn
    • H01L21/336
    • H01L29/66621H01L21/28123H01L21/823412H01L21/823437H01L27/10808H01L27/10876
    • A method of forming a recess channel trench pattern for forming a recess channel transistor is provided. A mask layer is formed on a semiconductor substrate, which is then patterned to expose an active region and a portion of an adjacent device isolating layer with an isolated hole type pattern. Using this mask layer the semiconductor substrate and the device isolating layer portion are selectively and anisotropically etched, thereby forming a recess channel trench with an isolated hole type pattern. The mask layer may be patterned to be a curved line type. In this case, the once linear portion is curved to allow the device isolating layer portion exposed by the patterned mask layer to be spaced apart from an adjacent active region. The semiconductor substrate and the device isolating layer portion are then etched, thereby forming a recess channel trench with a curved line type pattern.
    • 提供一种形成用于形成凹槽通道晶体管的凹槽沟槽图案的方法。 掩模层形成在半导体衬底上,然后将其图案化以暴露具有隔离孔型图案的有源区和相邻器件隔离层的一部分。 使用该掩模层,半导体衬底和器件隔离层部分被选择性地和各向异性地蚀刻,从而形成具有隔离孔型图案的凹槽沟槽。 掩模层可以被图案化为曲线型。 在这种情况下,一次线性部分是弯曲的,以允许由图案化掩模层露出的器件隔离层部分与相邻的有源区域间隔开。 然后蚀刻半导体衬底和器件隔离层部分,从而形成具有曲线型图案的凹槽沟槽。