SEMITUBULAR METAL-OXIDE-SEMICONDUCTOR FIELD EFFECT TRANSISTOR
    1.
    发明申请
    SEMITUBULAR METAL-OXIDE-SEMICONDUCTOR FIELD EFFECT TRANSISTOR 有权
    半导体金属氧化物半导体场效应晶体管

    公开(公告)号:US20090212341A1

    公开(公告)日:2009-08-27

    申请号:US12034899

    申请日:2008-02-21

    IPC分类号: H01L29/788 H01L21/336

    摘要: An epitaxial semiconductor layer or a stack of a silicon germanium alloy layer and an epitaxial strained silicon layer is formed on outer sidewalls of a porous silicon portion on a substrate. The porous silicon portion and any silicon germanium alloy material are removed and a semitubular epitaxial semiconductor structure in a three-walled configuration is formed. A semitubular field effect transistor comprising inner and outer gate dielectric layers, an inner gate electrode, an outer gate electrode, and source and drain regions is formed on the semitubular epitaxial semiconductor structure. The semitubular field effect transistor may operate as an SOI transistor with a tighter channel control through the inner and outer gate electrodes, or as a memory device storing electrical charges in the body region within the semitubular epitaxial semiconductor structure.

    摘要翻译: 在衬底上的多孔硅部分的外侧壁上形成硅锗合金层和外延应变硅层的外延半导体层或叠层。 去除多孔硅部分和任何硅锗合金材料,并形成三壁结构的半管状外延半导体结构。 在半管外延半导体结构上形成包括内栅电介质层和外栅电介质层,内栅电极,外栅电极以及源极和漏极区的半管场效应晶体管。 半管场效应晶体管可以作为具有通过内部和外部栅极电极的更严格的沟道控制的SOI晶体管,或作为在半管外延半导体结构内的体区中存储电荷的存储器件。

    Semitubular metal-oxide-semiconductor field effect transistor
    2.
    发明授权
    Semitubular metal-oxide-semiconductor field effect transistor 有权
    半金属氧化物半导体场效应晶体管

    公开(公告)号:US07868374B2

    公开(公告)日:2011-01-11

    申请号:US12034899

    申请日:2008-02-21

    IPC分类号: H01L29/788

    摘要: An epitaxial semiconductor layer or a stack of a silicon germanium alloy layer and an epitaxial strained silicon layer is formed on outer sidewalls of a porous silicon portion on a substrate. The porous silicon portion and any silicon germanium alloy material are removed and a semitubular epitaxial semiconductor structure in a three-walled configuration is formed. A semitubular field effect transistor comprising inner and outer gate dielectric layers, an inner gate electrode, an outer gate electrode, and source and drain regions is formed on the semitubular epitaxial semiconductor structure. The semitubular field effect transistor may operate as an SOI transistor with a tighter channel control through the inner and outer gate electrodes, or as a memory device storing electrical charges in the body region within the semitubular epitaxial semiconductor structure.

    摘要翻译: 在衬底上的多孔硅部分的外侧壁上形成硅锗合金层和外延应变硅层的外延半导体层或叠层。 去除多孔硅部分和任何硅锗合金材料,并形成三壁结构的半管状外延半导体结构。 在半管外延半导体结构上形成包括内栅电介质层和外栅电介质层,内栅电极,外栅电极以及源极和漏极区的半管场效应晶体管。 半管场效应晶体管可以作为具有通过内部和外部栅极电极的更严格的沟道控制的SOI晶体管,或作为在半管外延半导体结构内的体区中存储电荷的存储器件。

    Flash memory gate structure for widened lithography window
    3.
    发明授权
    Flash memory gate structure for widened lithography window 失效
    用于加宽光刻窗的闪存门结构

    公开(公告)号:US07888729B2

    公开(公告)日:2011-02-15

    申请号:US12198345

    申请日:2008-08-26

    IPC分类号: H01L21/336

    CPC分类号: H01L29/7881 H01L29/66825

    摘要: A first portion of a semiconductor substrate belonging to a flash memory device region is recessed to a recess depth to form a recessed region, while a second portion of the semiconductor substrate belonging to a logic device region is protected with a masking layer. A first gate dielectric layer and a first gate conductor layer formed within the recessed region such that the first gate conductive layer is substantially coplanar with the top surfaces of the shallow trench isolation structures. A second gate dielectric layer, a second gate conductor layer, and a gate cap hard mask layer, each having a planar top surface, is subsequently patterned. The pattern of the gate structure in the flash memory device region is transferred into the first gate conductor layer and the first gate dielectric layer to form a floating gate and a first gate dielectric, respectively.

    摘要翻译: 属于闪存器件区域的半导体衬底的第一部分凹陷到凹陷深度以形成凹陷区域,而属于逻辑器件区域的半导体衬底的第二部分被掩蔽层保护。 形成在凹陷区域内的第一栅介质层和第一栅极导体层,使得第一栅极导电层与浅沟槽隔离结构的顶表面基本共面。 随后对第二栅介质层,第二栅极导体层和栅帽硬掩模层进行构图,每个具有平坦的顶表面。 闪存器件区域中的栅极结构的图案被转移到第一栅极导体层和第一栅极介电层中,以分别形成浮置栅极和第一栅极电介质。

    FLASH MEMORY GATE STRUCTURE FOR WIDENED LITHOGRAPHY WINDOW
    4.
    发明申请
    FLASH MEMORY GATE STRUCTURE FOR WIDENED LITHOGRAPHY WINDOW 失效
    闪存光栅窗口的闪存存储器门结构

    公开(公告)号:US20100052034A1

    公开(公告)日:2010-03-04

    申请号:US12198345

    申请日:2008-08-26

    IPC分类号: H01L21/336 H01L29/788

    CPC分类号: H01L29/7881 H01L29/66825

    摘要: A first portion of a semiconductor substrate belonging to a flash memory device region is recessed to a recess depth to form a recessed region, while a second portion of the semiconductor substrate belonging to a logic device region is protected with a masking layer. A first gate dielectric layer and a first gate conductor layer formed within the recessed region such that the first gate conductive layer is substantially coplanar with the top surfaces of the shallow trench isolation structures. A second gate dielectric layer, a second gate conductor layer, and a gate cap hard mask layer, each having a planar top surface, is subsequently patterned. The pattern of the gate structure in the flash memory device region is transferred into the first gate conductor layer and the first gate dielectric layer to form a floating gate and a first gate dielectric, respectively.

    摘要翻译: 属于闪存器件区域的半导体衬底的第一部分凹陷到凹陷深度以形成凹陷区域,而属于逻辑器件区域的半导体衬底的第二部分被掩蔽层保护。 形成在凹陷区域内的第一栅介质层和第一栅极导体层,使得第一栅极导电层与浅沟槽隔离结构的顶表面基本共面。 随后对第二栅介质层,第二栅极导体层和栅帽硬掩模层进行构图,每个具有平坦的顶表面。 闪存器件区域中的栅极结构的图案被转移到第一栅极导体层和第一栅极介电层中,以分别形成浮置栅极和第一栅极电介质。

    SELF-ASSEMBLED MATERIAL PATTERN TRANSFER CONTRAST ENHANCEMENT
    7.
    发明申请
    SELF-ASSEMBLED MATERIAL PATTERN TRANSFER CONTRAST ENHANCEMENT 审中-公开
    自组装材料模式转移对比增强

    公开(公告)号:US20090117360A1

    公开(公告)日:2009-05-07

    申请号:US11933760

    申请日:2007-11-01

    IPC分类号: G03C1/73 B05D3/00 B32B27/06

    摘要: A non-photosensitive polymeric resist containing at least two immiscible polymeric block components is deposited on the planar surface. The non-photosensitive polymeric resist is annealed to allow phase separation of immiscible components and developed to remove at least one of the at least two polymeric block components. Nanoscale features, i.e., features of nanometer scale, including at least one recessed region having a nanoscale dimension is formed in the polymeric resist. The top surface of the polymeric resist is modified for enhanced etch resistance by an exposure to an energetic beam, which allows the top surface of the patterned polymeric resist to become more resistant to etching processes and chemistries. The enhanced ratio of etch resistance between the two types of surfaces provides improved image contrast and fidelity between areas having the top surface and the at least one recessed region.

    摘要翻译: 含有至少两个不混溶的聚合物嵌段组分的非光敏聚合物抗蚀剂沉积在平面上。 将非光敏聚合物抗蚀剂退火以允许不相容组分的相分离并显影以除去至少两种聚合物嵌段组分中的至少一种。 在聚合物抗蚀剂中形成纳米尺度特征,即纳米尺度的特征,包括具有纳米级尺寸的至少一个凹陷区域。 聚合物抗蚀剂的顶表面通过暴露于能量束而被改进以提高耐蚀刻性,这允许图案化聚合物抗蚀剂的顶表面变得更耐蚀刻工艺和化学物质。 两种类型表面之间的增强的耐蚀刻比提供了改善的图像对比度和具有顶表面和至少一个凹陷区域的区域之间的保真度。