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    • 6. 发明授权
    • Methods and apparatus for non-volatile memory cells
    • 用于非易失性记忆体的方法和装置
    • US08878281B2
    • 2014-11-04
    • US13478406
    • 2012-05-23
    • Chung-Jen HuangHung-Yueh Chen
    • Chung-Jen HuangHung-Yueh Chen
    • H01L29/788
    • H01L29/66825H01L29/42328H01L29/7881
    • Methods and apparatus for non-volatile memory cells. A memory cell includes a floating gate formed over a substrate with a tunneling dielectric over an upper surface of the floating gate and an erase gate over the tunneling dielectric. Sidewall dielectrics enclose the tunneling dielectric. Assist gates and coupling gates are formed on either side of the memory cell and are spaced from the floating gate of the memory cell by the sidewall dielectrics. Methods for forming memory cells include depositing a floating gate over a dielectric layer over a semiconductor substrate, depositing a tunneling dielectric over the floating gate, depositing an erase gate over the tunneling dielectric, patterning the erase gate, tunneling dielectric and floating gate to form memory cells having vertical sides, and depositing sidewall dielectrics on the vertical sides of the memory cells to seal the tunneling dielectrics. Additional steps are performed to complete the cells.
    • 用于非易失性记忆体的方法和装置。 存储单元包括在衬底上形成的浮动栅极,在浮置栅极的上表面上具有隧穿电介质,以及在隧道电介质上方的擦除栅极。 侧壁电介质包围隧道电介质。 辅助栅极和耦合栅极形成在存储单元的任一侧上,并且通过侧壁电介质与存储器单元的浮动栅极间隔开。 用于形成存储器单元的方法包括在半导体衬底上的电介质层上沉积浮置栅极,在浮置栅极上沉积隧道电介质,在隧道电介质上沉积擦除栅极,图案化擦除栅极,隧穿电介质和浮动栅极以形成存储器 电池具有垂直边,并且在存储单元的垂直侧上沉积侧壁电介质以密封隧道电介质。 执行附加步骤以完成单元。
    • 7. 发明授权
    • Spacer for semiconductor structure contact
    • 用于半导体结构接触的间隔物
    • US08877614B2
    • 2014-11-04
    • US13272875
    • 2011-10-13
    • Chun-Hung KoJyh-Huei ChenMing-Jie Huang
    • Chun-Hung KoJyh-Huei ChenMing-Jie Huang
    • H01L29/78H01L21/336H01L21/20H01L21/768H01L29/66
    • H01L21/76834H01L21/76897H01L29/66628H01L29/66636
    • An embodiment is a semiconductor structure. The semiconductor structure comprises an epitaxial region, a gate structure, a contact spacer, and an etch stop layer. The epitaxial region is in a substrate. A top surface of the epitaxial region is elevated from a top surface of the substrate, and the epitaxial region has a facet between the top surface of the substrate and the top surface of the epitaxial region. The gate structure is on the substrate. The contact spacer is laterally between the facet of the epitaxial region and the gate structure. The etch stop layer is over and adjoins each of the contact spacer and the top surface of the epitaxial region. A ratio of an etch selectivity of the contact spacer to an etch selectivity of the etch stop layer is equal to or less than 3:1.
    • 一个实施例是半导体结构。 半导体结构包括外延区域,栅极结构,接触间隔物和蚀刻停止层。 外延区域在衬底中。 外延区的顶表面从衬底的顶表面升高,并且外延区具有在衬底的顶表面和外延区的顶表面之间的刻面。 栅极结构在衬底上。 接触间隔物横向在外延区域的小面和栅极结构之间。 蚀刻停止层在每个接触间隔物和外延区域的顶表面之上并相邻。 接触间隔物的蚀刻选择性与蚀刻停止层的蚀刻选择性的比率等于或小于3:1。