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    • 5. 发明申请
    • METHOD OF FABRICATING NON-VOLATILE MEMORY DEVICE
    • 制造非易失性存储器件的方法
    • US20100062581A1
    • 2010-03-11
    • US12432187
    • 2009-04-29
    • Jung-Woo PARKJin-Ki JUNGKwon HONGKi-Seon PARK
    • Jung-Woo PARKJin-Ki JUNGKwon HONGKi-Seon PARK
    • H01L21/336H01L21/762
    • H01L27/11519H01L27/11521
    • Provided is a method of fabricating a non-volatile semiconductor device. The method includes: forming a first hard mask layer over a substrate; etching the first hard mask layer and the substrate to form a plurality of isolation trenches extending in parallel to one another in a first direction; burying a dielectric layer in the isolation trenches to form a isolation layer; forming a plurality of floating gate mask patterns extending in parallel to one another in a second direction intersecting with the first direction over a resulting structure where the isolation layer is formed; etching the first hard mask layer by using the floating gate mask patterns as an etch barrier to form a plurality of island-shaped floating gate electrode trenches; and burying a conductive layer in the floating gate electrode trenches to form a plurality of island-shaped floating gate electrodes.
    • 提供了制造非易失性半导体器件的方法。 该方法包括:在衬底上形成第一硬掩模层; 蚀刻第一硬掩模层和衬底以形成在第一方向上彼此平行延伸的多个隔离沟槽; 在隔离沟槽中埋置介电层以形成隔离层; 在形成所述隔离层的结果上形成在与所述第一方向相交的第二方向上彼此平行延伸的多个浮置栅极掩模图案; 通过使用浮栅掩模图案作为蚀刻势垒来蚀刻第一硬掩模层,以形成多个岛状浮栅电极沟槽; 并在所述浮栅电极沟槽中埋设导电层以形成多个岛状浮栅。