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    • 2. 发明授权
    • Protruding spacers for self-aligned contacts
    • 用于自对准触点的突出间隔件
    • US07332775B2
    • 2008-02-19
    • US11542864
    • 2006-10-04
    • Kurt George SteinerGerald W. Gibson, Jr.Eduardo Jose Quinones
    • Kurt George SteinerGerald W. Gibson, Jr.Eduardo Jose Quinones
    • H01L31/119H01L21/336
    • H01L21/76897H01L29/665H01L29/66545H01L29/7833H01L2924/0002H01L2924/00
    • A protruding spacer that protrudes above the top surface of a gate electrode structure provides enhanced resistance to exposure of the gate electrode during the etch process used to form self-aligned contacts. The protruding spacer may be formed using an amorphous carbon sacrificial layer as the top layer of the patterned gate electrode structure. Dielectric spacers are formed alongside the gate electrode structure, including alongside the sacrificial amorphous carbon layer. The dielectric spacers extend substantially to the top of the amorphous carbon layer. The amorphous carbon layer is then removed such that the remaining gate structure includes dielectric spacers that have a protruding section that protrudes above the top surface of the remaining gate structure. A nitride layer may be formed over the gate structure. Such a structure prevents exposure of the gate electrode during the formation of self-aligned contacts, and shorting, once the contact openings are filled.
    • 在栅电极结构的顶表面上方突出的突出间隔物在用于形成自对准接触的蚀刻工艺期间提供增强的栅电极的暴露电阻。 可以使用非晶碳牺牲层作为图案化栅极电极结构的顶层来形成突出间隔物。 电介质间隔物与栅电极结构一起形成,包括在牺牲无定形碳层的旁边。 电介质隔离层基本上延伸到无定形碳层的顶部。 然后去除无定形碳层,使得剩余的栅极结构包括具有在剩余栅极结构的顶表面上方突出的突出部分的电介质间隔物。 可以在栅极结构上形成氮化物层。 这种结构防止了在形成自对准触点时栅电极的暴露,并且一旦接触开口被填充就会短路。
    • 5. 发明授权
    • Structures and methods for low-k or ultra low-k interlayer dielectric pattern transfer
    • 低k或超低k层间电介质图案转移的结构和方法
    • US07695897B2
    • 2010-04-13
    • US11429709
    • 2006-05-08
    • James J. BucchignanoGerald W. GibsonMary B. RothwellRoy R. Yu
    • James J. BucchignanoGerald W. GibsonMary B. RothwellRoy R. Yu
    • G03F7/00G03F7/26
    • H01L21/31144H01L21/76802H01L21/76813
    • The present invention relates to improved methods and structures for forming interconnect patterns in low-k or ultra low-k (i.e., having a dielectric constant ranging from about 1.5 to about 3.5) interlevel dielectric (ILD) materials. Specifically, reduced lithographic critical dimensions (CDs) (i.e., in comparison with target CDs) are initially used for forming a patterned resist layer with an increased thickness, which in turn allows use of a simple hard mask stack comprising a lower nitride mask layer and an upper oxide mask layer for subsequent pattern transfer. The hard mask stack is next patterned by a first reactive ion etching (RIE) process using an oxygen-containing chemistry to form hard mask openings with restored CDs that are substantially the same as the target CDs. The ILD materials are then patterned by a second RIE process using a nitrogen-containing chemistry to form the interconnect pattern with the target CDs.
    • 本发明涉及用于形成低k或超低k(即介电常数范围为约1.5至约3.5)层间电介质(ILD)材料的互连图案的改进方法和结构。 具体地说,减小的光刻关键尺寸(CD)(即与目标CD相比)最初用于形成具有增加的厚度的图案化抗蚀剂层,其又允许使用包括下部氮化物掩模层的简单硬掩模层, 用于随后的图案转印的上氧化物掩模层。 接下来通过使用含氧化学物质的第一反应离子蚀刻(RIE)工艺来形成硬掩模叠层,以形成具有与目标CD基本相同的恢复的CD的硬掩模开口。 然后通过使用含氮化学物质的第二RIE方法将ILD材料图案化,以形成与目标CD的互连图案。
    • 7. 发明授权
    • Method and structure for controlling plasma uniformity
    • 控制等离子体均匀性的方法和结构
    • US6110395A
    • 2000-08-29
    • US918852
    • 1997-08-26
    • Gerald W. Gibson, Jr.
    • Gerald W. Gibson, Jr.
    • H01J37/32H05H1/46H05H1/00
    • H01J37/32522H01J37/32623H01J37/3266H05H1/46
    • The present invention relates to a method and structure for controlling plasma uniformity in plasma processing applications. Electron thermal conductivity parallel and perpendicular to magnetic field lines differs by orders of magnitude for low magnetic fields (on the order of 10 gauss). This property allows the directing of heat flux by controlling the magnetic field configuration independent of ions since the effect of modest magnetic fields upon the transport of ions themselves is minimal. Heat is preferentially conducted along magnetic field lines with electron temperatures on the order of 0.1 to 1 eV/cm being sufficient to drive kilowatt-level heat fluxes across areas typical of plasma processing source dimensions.
    • 本发明涉及一种用于控制等离子体处理应用中的等离子体均匀性的方法和结构。 与磁场线平行且垂直的电子热导率对于低磁场(大约10高斯)的数量级不同。 该性质允许通过独立于离子控制磁场构造来引导热通量,因为适度的磁场对离子本身的输送的影响是最小的。 热量优先沿着磁场线传导,电子温度为0.1至1eV / cm左右,足以在等离子体处理源尺寸典型的区域上驱动千瓦级热通量。