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    • 3. 发明授权
    • Methods of fabricating flash memory devices comprising forming a silicide on exposed upper and side surfaces of a control gate
    • 制造闪存器件的方法包括在暴露的控制栅极的上表面和侧表面上形成硅化物
    • US08043914B2
    • 2011-10-25
    • US12629920
    • 2009-12-03
    • Jong-wan ChoiYong-soon ChoiBo-young LeeEunkee HongEun-kyung BaekJu-seon Goo
    • Jong-wan ChoiYong-soon ChoiBo-young LeeEunkee HongEun-kyung BaekJu-seon Goo
    • H01L21/336
    • H01L27/11521H01L27/11524
    • Provided are methods of fabricating flash memory devices that may prevent a short circuit from occurring between cell gate lines. Methods of fabricating such flash memory devices may include forming gate lines including a series of multiple cell gate lines and multiple selection gate lines. Each gate line may include a stacked structure of a tunnel insulating layer, a floating gate, a gate insulating layer, and/or a polysilicon layer operable to be a control gate, all formed on a semiconductor substrate. Methods may include forming a first insulating layer that selectively fills gaps between the cell gate lines from the bottom up and between adjacent ones of the cell gate lines and the selection gate lines, and does not fill a space located on outer sides of the selection gate lines that are opposite the plurality of cell gate lines. A spacer may be formed on the outer sides of the selection gate lines that are opposite to the cell gate lines, after forming the first insulating layer. A second insulating layer may be formed in a space where the spacer is formed.
    • 提供了制造闪存器件的方法,其可以防止在单元栅极线之间发生短路。 制造这种闪存器件的方法可以包括形成包括一系列多单元栅极线和多个选择栅极线的栅极线。 每个栅极线可以包括全部形成在半导体衬底上的隧道绝缘层,浮动栅极,栅极绝缘层和/或可操作为控制栅极的多晶硅层的堆叠结构。 方法可以包括形成第一绝缘层,其选择性地从底部向上和相邻的单元栅极线和选择栅极线之间填充单元栅极线之间的间隙,并且不填充位于选择栅极的外侧的空间 与多个单元栅极线相对的线。 在形成第一绝缘层之后,可以在选择栅极线的与单元栅极线相对的外侧上形成间隔物。 可以在形成间隔物的空间中形成第二绝缘层。