Alternative method for advanced CMOS logic gate etch applications
    23.
    发明授权
    Alternative method for advanced CMOS logic gate etch applications 失效
    先进的CMOS逻辑门蚀刻应用的替代方法

    公开(公告)号:US07910488B2

    公开(公告)日:2011-03-22

    申请号:US11777259

    申请日:2007-07-12

    IPC分类号: H01L21/302

    摘要: Methods for etching, such as for fabricating a CMOS logic gate are provided herein. In some embodiments, a method of etching includes (a) providing a substrate having a first stack and a second stack disposed thereupon, the first stack comprising a high-k dielectric layer, a metal layer formed over the high-k dielectric layer, and a first polysilicon layer formed over the metal layer, the second stack comprising a second polysilicon layer, wherein the first and second stacks are substantially equal in thickness; (b) simultaneously etching a first feature in the first polysilicon layer and a second feature in the second polysilicon layer until the metal layer in the first stack is exposed; (c) simultaneously etching the metal layer and second polysilicon layer to extend the respective first and second features into the first and second stacks; and (d) etching the high-k dielectric layer.

    摘要翻译: 本文提供了用于制造CMOS逻辑门的蚀刻方法。 在一些实施例中,蚀刻方法包括(a)提供具有第一堆叠和设置在其上的第二堆叠的衬底,第一堆叠包括高k电介质层,形成在高k电介质层上的金属层,以及 形成在所述金属层上的第一多晶硅层,所述第二堆叠包括第二多晶硅层,其中所述第一和第二堆叠体的厚度基本相等; (b)同时蚀刻第一多晶硅层中的第一特征和第二多晶硅层中的第二特征,直到第一堆叠中的金属层暴露; (c)同时蚀刻金属层和第二多晶硅层以将相应的第一和第二特征延伸到第一和第二堆叠中; 和(d)蚀刻高k电介质层。

    SHALLOW TRENCH ISOLATION ETCH PROCESS
    25.
    发明申请
    SHALLOW TRENCH ISOLATION ETCH PROCESS 失效
    SHOWOW TRENCH隔离蚀刻工艺

    公开(公告)号:US20090170333A1

    公开(公告)日:2009-07-02

    申请号:US12325220

    申请日:2008-11-30

    IPC分类号: H01L21/302

    CPC分类号: H01L21/3065 H01L21/76224

    摘要: Methods for fabricating one or more shallow trench isolation (STI) structures are provided herein. In some embodiments, a method for fabricating one or more shallow trench isolation (STI) structures may include providing a substrate having a patterned mask layer disposed thereon to define one or more STI structures. The substrate may be etched using a plasma formed from a process gas mixture to form one or more STI structures on the substrate, wherein the process gas mixture comprises a fluorine-containing gas and either a fluorocarbon-containing gas or a hydrofluorocarbon-containing gas.

    摘要翻译: 本文提供了制造一个或多个浅沟槽隔离(STI)结构的方法。 在一些实施例中,用于制造一个或多个浅沟槽隔离(STI)结构的方法可以包括提供具有设置在其上以限定一个或多个STI结构的图案化掩模层的衬底。 可以使用由工艺气体混合物形成的等离子体来蚀刻衬底,以在衬底上形成一个或多个STI结构,其中工艺气体混合物包含含氟气体和含氟烃气体或含氢氟烃的气体。

    Method of pattern etching a silicon-containing hard mask
    26.
    发明授权
    Method of pattern etching a silicon-containing hard mask 失效
    图案蚀刻含硅硬掩模的方法

    公开(公告)号:US07504338B2

    公开(公告)日:2009-03-17

    申请号:US11502163

    申请日:2006-08-09

    IPC分类号: H01L21/311 H01L21/302

    摘要: Disclosed herein is a method of pattern etching a layer of a silicon-containing dielectric material. The method employs a plasma source gas including CF4 to CHF3, where the volumetric ratio of CF4 to CHF3 is within the range of about 2:3 to about 3:1; more typically, about 1:1 to about 2:1. Etching is performed at a process chamber pressure within the range of about 4 mTorr to about 60 mTorr. The method provides a selectivity for etching a silicon-containing dielectric layer relative to photoresist of 1.5:1 or better. The method also provides an etch profile sidewall angle ranging from 88° to 92° between said etched silicon-containing dielectric layer and an underlying horizontal layer. in the semiconductor structure. The method provides a smooth sidewall when used in combination with certain photoresists which are sensitive to 193 nm radiation.

    摘要翻译: 本文公开了一种图案蚀刻含硅介电材料层的方法。 该方法采用包含CF4至CHF3的等离子体源气体,其中CF 4与CHF 3的体积比在约2:3至约3:1的范围内; 更通常为约1:1至约2:1。 在约4mTorr至约60mTorr的范围内的处理室压力下进行蚀刻。 该方法提供了相对于光致抗蚀剂蚀刻含硅电介质层的选择性为1.5:1或更好。 该方法还提供了在所述被蚀刻的含硅介电层和下面的水平层之间从88°至92°的蚀刻轮廓侧壁角。 在半导体结构中。 当与某些对193nm辐射敏感的光致抗蚀剂组合使用时,该方法提供了平滑的侧壁。

    ALTERNATIVE METHOD FOR ADVANCED CMOS LOGIC GATE ETCH APPLICATIONS
    27.
    发明申请
    ALTERNATIVE METHOD FOR ADVANCED CMOS LOGIC GATE ETCH APPLICATIONS 失效
    高级CMOS逻辑门控应用的替代方法

    公开(公告)号:US20090017633A1

    公开(公告)日:2009-01-15

    申请号:US11777259

    申请日:2007-07-12

    IPC分类号: H01L21/302

    摘要: Methods for etching, such as for fabricating a CMOS logic gate are provided herein. In some embodiments, a method of etching includes (a) providing a substrate having a first stack and a second stack disposed thereupon, the first stack comprising a high-k dielectric layer, a metal layer formed over the high-k dielectric layer, and a first polysilicon layer formed over the metal layer, the second stack comprising a second polysilicon layer, wherein the first and second stacks are substantially equal in thickness; (b) simultaneously etching a first feature in the first polysilicon layer and a second feature in the second polysilicon layer until the metal layer in the first stack is exposed; (c) simultaneously etching the metal layer and second polysilicon layer to extend the respective first and second features into the first and second stacks; and (d) etching the high-k dielectric layer.

    摘要翻译: 本文提供了用于制造CMOS逻辑门的蚀刻方法。 在一些实施例中,蚀刻方法包括(a)提供具有第一堆叠和设置在其上的第二堆叠的衬底,第一堆叠包括高k电介质层,形成在高k电介质层上的金属层,以及 形成在所述金属层上的第一多晶硅层,所述第二堆叠包括第二多晶硅层,其中所述第一和第二堆叠体的厚度基本相等; (b)同时蚀刻第一多晶硅层中的第一特征和第二多晶硅层中的第二特征,直到第一堆叠中的金属层暴露; (c)同时蚀刻金属层和第二多晶硅层以将相应的第一和第二特征延伸到第一和第二堆叠中; 和(d)蚀刻高k电介质层。

    METHOD FOR RECESS ETCHING
    28.
    发明申请
    METHOD FOR RECESS ETCHING 审中-公开
    记忆蚀刻方法

    公开(公告)号:US20080146034A1

    公开(公告)日:2008-06-19

    申请号:US11954981

    申请日:2007-12-12

    IPC分类号: H01L21/311

    摘要: Methods for recess etching are provided herein that advantageously improve lateral to vertical etch ratio requirements, thereby enabling deeper recess etching while maintaining relatively shallow vertical etch depths. Such enhanced lateral etch methods advantageously provide benefits for numerous applications where lateral to vertical etch depth ratios are constrained or where recesses or cavities are desired to be formed. In some embodiments, a method of recess etching includes providing a substrate having a structure formed thereon; forming a recess in the substrate at least partially beneath the structure using a first etch process; forming a selective passivation layer on the substrate; and extending the recess in the substrate using a second etch process. The selective passivation layer is generally formed on regions of the substrate adjacent to the structure but generally not within the recess. The first and second etch processes may be the same or different.

    摘要翻译: 本文提供凹槽蚀刻的方法,其有利地提高了横向垂直蚀刻比要求,从而实现更深的凹槽蚀刻,同时保持较浅的垂直蚀刻深度。 这种增强的横向蚀刻方法有利地为许多应用提供了优点,其中横向到垂直蚀刻深度比被约束或者需要形成凹部或空腔。 在一些实施例中,凹陷蚀刻的方法包括提供其上形成有结构的基板; 使用第一蚀刻工艺在所述结构的至少部分下方在所述衬底中形成凹部; 在衬底上形成选择性钝化层; 以及使用第二蚀刻工艺在所述衬底中延伸所述凹部。 选择性钝化层通常形成在与结构相邻的基底的区域上,但通常不在凹部内。 第一和第二蚀刻工艺可以相同或不同。

    METHOD FOR ETCHING WITH HARDMASK
    29.
    发明申请
    METHOD FOR ETCHING WITH HARDMASK 审中-公开
    用HARDMASK进行蚀刻的方法

    公开(公告)号:US20070161255A1

    公开(公告)日:2007-07-12

    申请号:US11620271

    申请日:2007-01-05

    IPC分类号: H01L21/31

    摘要: Methods are provided for processing a substrate by depositing a hardmask material on a surface of the substrate, depositing an anti-reflective coating on the hardmask material, depositing a resist material on the anti-reflective coating, patterning the resist material to form a first resist features having a first width to expose the anti-reflective coating, etching the anti-reflective coating and a first portion of the hardmask material, and trimming the resist material to form a second resist feature having a second width less than the first width.

    摘要翻译: 提供了用于通过在基材的表面上沉积硬掩模材料来处理基材的方法,在硬掩模材料上沉积抗反射涂层,在抗反射涂层上沉积抗蚀剂材料,图案化抗蚀剂材料以形成第一抗蚀剂 特征具有第一宽度以暴露抗反射涂层,蚀刻抗反射涂层和硬掩模材料的第一部分,以及修剪抗蚀剂材料以形成具有小于第一宽度的第二宽度的第二抗蚀剂特征。

    Method of pattern etching a silicon-containing hard mask
    30.
    发明申请
    Method of pattern etching a silicon-containing hard mask 失效
    图案蚀刻含硅硬掩模的方法

    公开(公告)号:US20070010099A1

    公开(公告)日:2007-01-11

    申请号:US11502163

    申请日:2006-08-09

    IPC分类号: H01L21/461 H01L21/302

    摘要: Disclosed herein is a method of pattern etching a layer of a silicon-containing dielectric material. The method employs a plasma source gas including CF4 to CHF3, where the volumetric ratio of CF4 to CHF3 is within the range of about 2:3 to about 3:1; more typically, about 1:1 to about 2:1. Etching is performed at a process chamber pressure within the range of about 4 mTorr to about 60 mTorr. The method provides a selectivity for etching a silicon-containing dielectric layer relative to photoresist of 1.5:1 or better. The method also provides an etch profile sidewall angle ranging from 88° to 92° between said etched silicon-containing dielectric layer and an underlying horizontal layer in the semiconductor structure. The method provides a smooth sidewall when used in combination with certain photoresists which are sensitive to 193 nm radiation.

    摘要翻译: 本文公开了一种图案蚀刻含硅介电材料层的方法。 该方法采用等离子体源气体,其包括CF 4和CHF 3 3的体积比,其中CF 4的体积比与CHF 3 < SUB>在约2:3至约3:1的范围内; 更通常为约1:1至约2:1。 在约4mTorr至约60mTorr的范围内的处理室压力下进行蚀刻。 该方法提供了相对于光致抗蚀剂蚀刻含硅电介质层的选择性为1.5:1或更好。 该方法还提供了在所述蚀刻的含硅介电层和半导体结构中的下面的水平层之间从88°至92°的范围内的蚀刻轮廓侧壁角。 当与某些对193nm辐射敏感的光致抗蚀剂组合使用时,该方法提供了平滑的侧壁。