Shallow trench isolation approach for improved STI corner rounding
    2.
    发明授权
    Shallow trench isolation approach for improved STI corner rounding 有权
    浅沟隔离方法可改善STI拐角四舍五入

    公开(公告)号:US07439141B2

    公开(公告)日:2008-10-21

    申请号:US10277395

    申请日:2002-10-22

    IPC分类号: H01L21/00

    CPC分类号: H01L21/76235

    摘要: A method for performing shallow trench isolation during semiconductor fabrication that improves trench corner rounding is disclosed. The method includes etching trenches into a silicon substrate between active regions, and performing a double liner oxidation process on the trenches. The method further includes performing a double sacrificial oxidation process on the active regions, wherein corners of the trenches are substantially rounded by the four oxidation processes.

    摘要翻译: 公开了一种用于在半导体制造期间进行浅沟槽隔离的方法,其改善沟槽角圆化。 该方法包括将沟槽蚀刻到有源区域之间的硅衬底中,并在沟槽上执行双衬层氧化工艺。 该方法还包括对活性区域进行双重牺牲氧化处理,其中沟槽的角通过四个氧化过程基本上被圆化。

    Method and system for tailoring core and periphery cells in a nonvolatile memory
    7.
    发明授权
    Method and system for tailoring core and periphery cells in a nonvolatile memory 有权
    用于定制非易失性存储器中的核心和外围单元的方法和系统

    公开(公告)号:US06808992B1

    公开(公告)日:2004-10-26

    申请号:US10150240

    申请日:2002-05-15

    IPC分类号: H01L21336

    摘要: A method and system for providing a semiconductor device are described. The semiconductor device includes a substrate, a core and a periphery. The core includes a plurality of core gate stacks having a first plurality of edges, while the periphery a plurality of periphery gate stacks having a second plurality of edges. The method and system include providing a plurality of core spacers, a plurality of periphery spacers, a plurality of core sources and a plurality of conductive regions. The core spacers reside at the first plurality of edges and have a thickness. The periphery spacers reside at the second plurality of edges and have a second thickness greater than the first thickness. The core sources reside between the plurality of core gate stacks. The conductive regions are on the plurality of core sources. This method allows different thicknesses of the spacers to be formed in the core and the periphery so that the spacers can be tailored to the different requirements of the core and periphery.

    摘要翻译: 描述了一种用于提供半导体器件的方法和系统。 半导体器件包括衬底,芯和周边。 芯包括具有第一多个边缘的多个核心栅极叠层,而周边具有多个具有第二多个边缘的外围栅极堆叠。 该方法和系统包括提供多个芯间隔件,多个外围间隔件,多个芯源和多个导电区域。 芯间隔件位于第一多个边缘处并且具有厚度。 外围间隔件位于第二多个边缘处并且具有大于第一厚度的第二厚度。 核心源位于多个核心门堆栈之间。 导电区域在多个核心源上。 该方法允许不同厚度的间隔件形成在芯部和周边中,使得间隔件可以根据芯部和周边的不同要求进行调整。

    Innovative narrow gate formation for floating gate flash technology
    8.
    发明授权
    Innovative narrow gate formation for floating gate flash technology 有权
    用于浮栅闪存技术的创新窄门形成

    公开(公告)号:US06583009B1

    公开(公告)日:2003-06-24

    申请号:US10178106

    申请日:2002-06-24

    IPC分类号: H01L218247

    摘要: The present invention relates to a method of forming a stacked gate flash memory cell and comprises forming a tunnel oxide layer, a first conductive layer, an interpoly dielectric layer, and a second conductive layer in succession over a semiconductor substrate. The method further comprises forming a sacrificial layer over the second conductive layer, and patterning the sacrificial layer to form a sacrificial layer feature having at least one lateral sidewall edge associated therewith. A sidewall spacer is then formed against the lateral sidewall edge of the sacrificial layer, wherein the spacer has a width associated therewith, and the patterned sacrificial layer feature is removed. Finally, the second conductive layer, the interpoly dielectric and the first conductive layer are patterned using the spacer as a hard mask, and defining the stacked gate, wherein a width of the stacked gate is a function of the spacer width.

    摘要翻译: 本发明涉及一种形成层叠栅极闪存单元的方法,包括在半导体衬底上连续形成隧道氧化物层,第一导电层,多晶硅间介质层和第二导电层。 该方法还包括在第二导电层上形成牺牲层,以及图案化牺牲层以形成具有与其相关联的至少一个侧向侧壁边缘的牺牲层特征。 然后在牺牲层的横向侧壁边缘上形成侧壁间隔物,其中间隔件具有与其相关联的宽度,并且去除图案化的牺牲层特征。 最后,使用间隔物作为硬掩模来图案化第二导电层,多晶硅间电介质和第一导电层,并且限定堆叠栅极,其中堆叠栅极的宽度是间隔物宽度的函数。