Etch back of interconnect dielectrics
    1.
    发明授权
    Etch back of interconnect dielectrics 有权
    互连电介质的后蚀刻

    公开(公告)号:US06780756B1

    公开(公告)日:2004-08-24

    申请号:US10375996

    申请日:2003-02-28

    IPC分类号: H01L214763

    CPC分类号: H01L21/76829

    摘要: An embodiment of the invention is a metal layer 14 of a back-end module 6 where the height of the interconnects 17 is greater than the height of the dielectric regions 20. Another embodiment of the invention is a method of fabricating a semiconductor wafer 4 where the height of the interconnects 17 is greater than the height of the dielectric regions 20.

    摘要翻译: 本发明的一个实施例是后端模块6的金属层14,其中互连件17的高度大于电介质区域20的高度。本发明的另一实施例是制造半导体晶片4的方法,其中 互连17的高度大于电介质区域20的高度。

    DUAL METAL GATES USING ONE METAL TO ALTER WORK FUNCTION OF ANOTHER METAL
    2.
    发明申请
    DUAL METAL GATES USING ONE METAL TO ALTER WORK FUNCTION OF ANOTHER METAL 审中-公开
    使用一种金属的双金属门可以改善其他金属的工作功能

    公开(公告)号:US20120256270A1

    公开(公告)日:2012-10-11

    申请号:US13525840

    申请日:2012-06-18

    IPC分类号: H01L27/092

    摘要: Methods of forming dual metal gates and the gates so formed are disclosed. A method may include forming a first metal (e.g., NMOS metal) layer on a gate dielectric layer and a second metal (e.g., PMOS metal) layer on the first metal layer, whereby the second metal layer alters a work function of the first metal layer (to form PMOS metal). The method may remove a portion of the second metal layer to expose the first metal layer in a first region; form a silicon layer on the exposed first metal layer in the first region and on the second metal layer in a second region; and form the dual metal gates in the first and second regions. Since the gate dielectric layer is continuously covered with the first metal, it is not exposed to the damage from the metal etch process.

    摘要翻译: 公开了形成双金属栅极和形成的栅极的方法。 一种方法可以包括在第一金属层上的栅极电介质层和第二金属(例如,PMOS金属)层上形成第一金属(例如,NMOS金属)层,由此第二金属层改变第一金属的功函数 层(形成PMOS金属)。 该方法可以移除第二金属层的一部分以暴露第一区域中的第一金属层; 在第一区域中的暴露的第一金属层上和在第二区域中的第二金属层上形成硅层; 并在第一和第二区域形成双金属栅极。 由于栅极电介质层被第一金属连续覆盖,所以不会受到金属蚀刻工艺的损害。

    Dual metal gates using one metal to alter work function of another metal
    3.
    发明授权
    Dual metal gates using one metal to alter work function of another metal 失效
    双金属门使用一种金属来改变另一种金属的功能

    公开(公告)号:US08236686B2

    公开(公告)日:2012-08-07

    申请号:US12129984

    申请日:2008-05-30

    IPC分类号: H01L21/44

    摘要: Methods of forming dual metal gates and the gates so formed are disclosed. A method may include forming a first metal (e.g., NMOS metal) layer on a gate dielectric layer and a second metal (e.g., PMOS metal) layer on the first metal layer, whereby the second metal layer alters a work function of the first metal layer (to form PMOS metal). The method may remove a portion of the second metal layer to expose the first metal layer in a first region; form a silicon layer on the exposed first metal layer in the first region and on the second metal layer in a second region; and form the dual metal gates in the first and second regions. Since the gate dielectric layer is continuously covered with the first metal, it is not exposed to the damage from the metal etch process.

    摘要翻译: 公开了形成双金属栅极和形成的栅极的方法。 一种方法可以包括在第一金属层上的栅极电介质层和第二金属(例如,PMOS金属)层上形成第一金属(例如,NMOS金属)层,由此第二金属层改变第一金属的功函数 层(形成PMOS金属)。 该方法可以移除第二金属层的一部分以暴露第一区域中的第一金属层; 在第一区域中的暴露的第一金属层上和在第二区域中的第二金属层上形成硅层; 并在第一和第二区域形成双金属栅极。 由于栅极电介质层被第一金属连续覆盖,所以不会受到金属蚀刻工艺的损害。

    Mitigation of gate to contact capacitance in CMOS flow
    4.
    发明授权
    Mitigation of gate to contact capacitance in CMOS flow 有权
    栅极接触电容在CMOS流中的缓解

    公开(公告)号:US08119470B2

    公开(公告)日:2012-02-21

    申请号:US11726253

    申请日:2007-03-21

    摘要: Sidewall spacers that are primarily oxide, instead of nitride, are formed adjacent to a gate stack of a CMOS transistor. Individual sidewall spacers are situated between a conductive gate electrode of the gate stack and a conductive contact of the transistor. As such, a capacitance can develop between the gate electrode and the contact, depending on the dielectric constant of the interposed sidewall spacer. Accordingly, forming sidewall spacers out of oxide, which has a lower dielectric constant than nitride, mitigates capacitance that can otherwise develop between these features. Such capacitance is undesirable, at least, because it can inhibit transistor switching speeds. Accordingly, fashioning sidewall spacers as described herein can mitigate yield loss by reducing the number of devices that have unsatisfactory switching speeds and/or other undesirable performance characteristics.

    摘要翻译: 主要是氧化物而不是氮化物的侧壁间隔物邻近CMOS晶体管的栅极叠层形成。 单独的侧壁间隔物位于栅极堆叠的导电栅电极和晶体管的导电接触之间。 因此,取决于插入的侧壁间隔物的介电常数,可以在栅电极和接触之间产生电容。 因此,从具有比氮化物更低的介电常数的氧化物形成侧壁间隔物减轻了另外可能在这些特征之间产生的电容。 这种电容至少是不利的,因为它可以抑制晶体管的切换速度。 因此,如本文所述的形成侧壁间隔件可以通过减少具有不令人满意的切换速度和/或其它不期望的性能特征的设备的数量来减轻产量损失。

    GATE ELECTRODE FOR FINFET DEVICE
    5.
    发明申请
    GATE ELECTRODE FOR FINFET DEVICE 有权
    FINFET器件的栅极电极

    公开(公告)号:US20060160312A1

    公开(公告)日:2006-07-20

    申请号:US11039173

    申请日:2005-01-20

    IPC分类号: H01L21/336

    摘要: In a method of forming a semiconductor device, a self-planarizing conductive layer is formed over a substrate that includes a topography having sharp drop-offs. The self-planarizing conductive layer is characterized by a substantially flatter surface than the underlying topography. As a result of the self-planarizing layer, a masking layer having a more uniform thickness may be formed over the conductive layer. Because the masking layer has a more uniform thickness, the masking layer may easily be patterned without causing damage to the underlying materials. These techniques may be used to fabricate, among other things, a FinFET without parasitic spacers formed around the fins and the source/drain regions.

    摘要翻译: 在形成半导体器件的方法中,在包括具有锐利掉落的形貌的衬底上形成自平面化导电层。 自平坦化导电层的特征在于比底层形貌基本上更平坦的表面。 作为自平坦化层的结果,可以在导电层上形成具有更均匀厚度的掩模层。 由于掩模层具有更均匀的厚度,所以掩蔽层可以容易地被图案化,而不会对下面的材料造成损害。 除了别的以外,这些技术可以用于制造没有在鳍片和源极/漏极区域周围形成的寄生间隔物的FinFET。

    Formation of fully silicided gate with oxide barrier on the source/drain silicide regions
    7.
    发明授权
    Formation of fully silicided gate with oxide barrier on the source/drain silicide regions 有权
    在源极/漏极硅化物区域形成具有氧化物势垒的完全硅化栅极

    公开(公告)号:US07737015B2

    公开(公告)日:2010-06-15

    申请号:US11711297

    申请日:2007-02-27

    IPC分类号: H01L21/3205

    摘要: A simple and cost effective method of forming a fully silicided (FUSI) gate of a MOS transistor is disclosed. In one example, the method comprises forming a nitride hardmask overlying a polysilicon gate, forming an S/D silicide in source/drain regions of the transistor, oxidizing a portion of the S/D silicide to form an oxide barrier overlying the S/D silicide in the source/drain regions, removing the nitride hardmask from the polysilicon gate, and forming a gate silicide such as by deposition of a gate silicide metal over the polysilicon gate and the oxide barrier in the source/drain regions to form a fully silicided (FUSI) gate in the transistor. Thus, the oxide barrier protects the source/drain regions from additional silicide formation by the gate silicide metal formed thereafter. The method may further comprise selectively removing the oxide barrier in the source/drain regions after forming the fully silicided (FUSI) gate.

    摘要翻译: 公开了一种形成MOS晶体管的完全硅化(FUSI)栅极的简单且成本有效的方法。 在一个示例中,该方法包括形成覆盖多晶硅栅极的氮化物硬掩模,在晶体管的源极/漏极区域中形成S / D硅化物,氧化S / D硅化物的一部分以形成覆盖S / D的氧化物屏障 在源极/漏极区域中的硅化物,从多晶硅栅极去除氮化物硬掩模,以及形成栅极硅化物,例如通过在多晶硅栅极上沉积栅极硅化物金属和在源极/漏极区域中的氧化物势垒形成完全硅化物 (FUSI)栅极。 因此,氧化物屏障通过之后形成的栅极硅化物金属保护源极/漏极区域免于另外的硅化物形成。 该方法还可以包括在形成完全硅化(FUSI)栅极之后选择性地去除源极/漏极区域中的氧化物势垒。

    Mitigation of gate to contact capacitance in CMOS flow
    8.
    发明申请
    Mitigation of gate to contact capacitance in CMOS flow 有权
    栅极接触电容在CMOS流中的缓解

    公开(公告)号:US20080230815A1

    公开(公告)日:2008-09-25

    申请号:US11726253

    申请日:2007-03-21

    IPC分类号: H01L29/78 H01L21/336

    摘要: Sidewall spacers that are primarily oxide, instead of nitride, are formed adjacent to a gate stack of a CMOS transistor. Individual sidewall spacers are situated between a conductive gate electrode of the gate stack and a conductive contact of the transistor. As such, a capacitance can develop between the gate electrode and the contact, depending on the dielectric constant of the interposed sidewall spacer. Accordingly, forming sidewall spacers out of oxide, which has a lower dielectric constant than nitride, mitigates capacitance that can otherwise develop between these features. Such capacitance is undesirable, at least, because it can inhibit transistor switching speeds. Accordingly, fashioning sidewall spacers as described herein can mitigate yield loss by reducing the number of devices that have unsatisfactory switching speeds and/or other undesirable performance characteristics.

    摘要翻译: 主要是氧化物而不是氮化物的侧壁间隔物邻近CMOS晶体管的栅极叠层形成。 单独的侧壁间隔物位于栅极堆叠的导电栅电极和晶体管的导电接触之间。 因此,取决于插入的侧壁间隔物的介电常数,可以在栅电极和接触之间产生电容。 因此,从具有比氮化物更低的介电常数的氧化物形成侧壁间隔物减轻了另外可能在这些特征之间产生的电容。 这种电容至少是不利的,因为它可以抑制晶体管的切换速度。 因此,如本文所述的形成侧壁间隔件可以通过减少具有不令人满意的切换速度和/或其它不期望的性能特征的设备的数量来减轻产量损失。

    Gate electrode for FinFET device
    9.
    发明授权
    Gate electrode for FinFET device 有权
    FinFET器件用栅极

    公开(公告)号:US07094650B2

    公开(公告)日:2006-08-22

    申请号:US11039173

    申请日:2005-01-20

    IPC分类号: H01L21/336

    摘要: In a method of forming a semiconductor device, a self-planarizing conductive layer is formed over a substrate that includes a topography having sharp drop-offs. The self-planarizing conductive layer is characterized by a substantially flatter surface than the underlying topography. As a result of the self-planarizing layer, a masking layer having a more uniform thickness may be formed over the conductive layer. Because the masking layer has a more uniform thickness, the masking layer may easily be patterned without causing damage to the underlying materials. These techniques may be used to fabricate, among other things, a FinFET without parasitic spacers formed around the fins and the source/drain regions.

    摘要翻译: 在形成半导体器件的方法中,在包括具有锐利掉落的形貌的衬底上形成自平面化导电层。 自平坦化导电层的特征在于比底层形貌基本上更平坦的表面。 作为自平坦化层的结果,可以在导电层上形成具有更均匀厚度的掩模层。 由于掩模层具有更均匀的厚度,所以掩蔽层可以容易地被图案化,而不会对下面的材料造成损害。 除了别的以外,这些技术可以用于制造没有在鳍片和源极/漏极区域周围形成的寄生间隔物的FinFET。