Complementary replacement of material
    11.
    发明授权
    Complementary replacement of material 有权
    补充材料更换

    公开(公告)号:US07399709B1

    公开(公告)日:2008-07-15

    申请号:US10256401

    申请日:2002-09-27

    IPC分类号: H01L21/302

    摘要: An image reversal method is described that removes the etch resistance requirement from a resist. A high resolution resist pattern comprised of islands, lines, or trenches is formed with a large process window by exposing through one or more masks including phase edge masks and optionally with resolution enhancement techniques. A complementary material replacement (CMR) layer comprised of an organic polymer or material such as fluorosilicate glass which has a lower etch rate than the resist is coated over the resist pattern. CMR and resist layers are etched simultaneously to provide an image reversed pattern in the CMR layer which is etch transferred into a substrate. The method avoids edge roughness like bird's beak defects in the etched pattern and is useful for applications including forming contact holes in dielectric layers, forming polysilicon gates, and forming trenches in a damascene process. It is also valuable for direct write methods where an image reversal scheme is desired.

    摘要翻译: 描述了去除抗蚀剂的耐蚀刻性要求的图像反转方法。 由岛,线或沟槽组成的高分辨率抗蚀剂图案通过暴露于包括相位边缘掩模的一个或多个掩模以及可选地具有分辨率增强技术而由大的工艺窗口形成。 由有机聚合物或诸如氟硅酸盐玻璃的材料组成的互补材料置换(CMR)层被涂覆在抗蚀剂图案上。 同时蚀刻CMR和抗蚀剂层以在CMR层中提供图像反转图案,其被蚀刻转移到衬底中。 该方法避免了像蚀刻图案中的鸟喙缺陷那样的边缘粗糙度,并且可用于包括在电介质层中形成接触孔,形成多晶硅栅极以及在镶嵌工艺中形成沟槽的应用。 对于需要图像反转方案的直接写入方法也是有价值的。

    Methods for measuring photoresist dimensions
    12.
    发明授权
    Methods for measuring photoresist dimensions 失效
    测量光刻胶尺寸的方法

    公开(公告)号:US06866988B2

    公开(公告)日:2005-03-15

    申请号:US10264521

    申请日:2002-10-05

    IPC分类号: G03F7/40 G03C5/00

    CPC分类号: G03F7/40

    摘要: A new and improved method for measuring dimensions of a photoresist pattern profile on a wafer substrate during photolithography for the fabrication of integrated circuits on the substrate. According to one embodiment, the method includes fixing the photoresist pattern profile on the substrate using a spin-on glass (SOG) procedure. In another embodiment, the method includes fixing the photoresist pattern profile on the substrate using a sputter oxide (SO) procedure. The fixed photoresist pattern is then subjected to a microscopy procedure, typically transmission electron microscopy (TEM), to measure the exact linewidth and other dimensions of the profile. The method prevents distortion of the profile during fixation and facilitates an accurate determination of the profile dimensions.

    摘要翻译: 一种用于在光刻期间测量晶片衬底上的光致抗蚀剂图案轮廓的尺寸的新的和改进的方法,用于在衬底上制造集成电路。 根据一个实施例,该方法包括使用旋涂玻璃(SOG)程序将光致抗蚀剂图案轮廓固定在基底上。 在另一个实施例中,该方法包括使用溅射氧化物(SO)程序将光致抗蚀剂图案轮廓固定在基底上。 然后将固定的光致抗蚀剂图案进行显微镜程序,通常是透射电子显微镜(TEM),以测量轮廓的精确线宽和其他尺寸。 该方法可防止固定过程中的轮廓变形,并有助于精确确定轮廓尺寸。

    Dual damascene process
    13.
    发明申请
    Dual damascene process 有权
    双镶嵌工艺

    公开(公告)号:US20050014362A1

    公开(公告)日:2005-01-20

    申请号:US10915633

    申请日:2004-08-10

    IPC分类号: H01L21/768 H01L21/4763

    CPC分类号: H01L21/76808

    摘要: A method of fabricating semiconductor devices using dual damascene processes to form plugs in the via holes composed of various high etch materials and bottom anti-reflection coating (BARC) materials. After via hole etch, a layer of high etch rate plug material is spin coated to fill the via holes. Next, a layer of photoresist is applied. The photoresist is then exposed through a mask and developed to form an etch opening. Using the remaining photoresist as an etch mask and with a bottom anti-reflection coating (BARC) as protection, the oxide or low k layer is etched to form subsequent wiring. The etch step is known as a damascene etch step. The remaining photoresist is removed and the trench/via openings are filled with metal forming inlaid metal interconnect wiring and contact vias.

    摘要翻译: 使用双镶嵌工艺制造半导体器件的方法来在由各种高蚀刻材料和底部抗反射涂层(BARC)材料构成的通孔中形成插塞。 在通孔蚀刻之后,旋涂一层高蚀刻速率的塞材料以填充通孔。 接下来,施加一层光致抗蚀剂。 然后将光致抗蚀剂通过掩模曝光并显影以形成蚀刻开口。 使用剩余的光致抗蚀剂作为蚀刻掩模和底部防反射涂层(BARC)作为保护,氧化物或低k层被蚀刻以形成后续布线。 蚀刻步骤被称为镶嵌蚀刻步骤。 去除剩余的光致抗蚀剂,并且通过金属形成金属互连布线和接触通孔填充沟槽/通孔开口。

    Method of forming small contact holes using alternative phase shift masks and negative photoresist
    14.
    发明授权
    Method of forming small contact holes using alternative phase shift masks and negative photoresist 有权
    使用替代相移掩模和负性光致抗蚀剂形成小接触孔的方法

    公开(公告)号:US06682858B2

    公开(公告)日:2004-01-27

    申请号:US09946987

    申请日:2001-09-06

    申请人: Hua-Tai Lin

    发明人: Hua-Tai Lin

    IPC分类号: G03F900

    摘要: A phase shifting mask set and method of using the phase shifting mask set to pattern a layer of negative photoresist. The mask set comprises a first phase shifting mask and a second phase shifting mask. The first and second phase shifting masks have regions of 90° phase shift and −90° phase shift in the contact hole regions of the masks. In the second phase shift mask the phase shift regions are rotated 90° spatially with respect to the phase shift regions of the first phase shift mask. A layer of negative photoresist is exposed with the first and second phase shift masks and developed to form the photoresist pattern used to form contact holes.

    摘要翻译: 一种相移掩模集和使用相移掩模集合来对一层负性光致抗蚀剂进行图案化的方法。 掩模组包括第一相移掩模和第二相移掩模。 第一和第二相移掩模在掩模的接触孔区域中具有90°相移和-90°相移的区域。 在第二相移掩模中,相移相对于第一相移掩模的相移区域在空间上旋转90°。 用第一和第二相移掩模露出一层负性光致抗蚀剂,并显影以形成用于形成接触孔的光致抗蚀剂图案。

    Method for proximity effect compensation on alternative phase-shift masks with bias and optical proximity correction
    15.
    发明授权
    Method for proximity effect compensation on alternative phase-shift masks with bias and optical proximity correction 有权
    用于具有偏置和光学邻近校正的替代相移掩模上的邻近效应补偿的方法

    公开(公告)号:US06183916B2

    公开(公告)日:2001-02-06

    申请号:US09395283

    申请日:1999-09-13

    IPC分类号: G03F900

    CPC分类号: G03F1/30 G03F1/36

    摘要: A method of forming an alternative phase shifting mask and forming a circuit pattern on a wafer using the mask are described. Optical proximity correction is added to a data file, in which a description of a circuit pattern has been stored, to obtain a first modified data file. The first modified data file is then separated into a second modified data file, for regions of the mask having dense line/space patterns, and a third modified data file, for regions of the mask having isolated line space patterns. Critical dimension bias is then added to the second modified data file forming a fourth modified data file. The third modified data file and the fourth modified data file are then merged into a single fifth modified data file. The fifth modified data file is then is then converted to an alternative phase shift data file. An alternative phase shift mask is then formed from the alternative phase shift data file. The alternative phase shift mask has then been corrected for optical proximity effect and critical dimension bias has been added. This alternative phase shift mask can then be used in forming the circuit pattern on an integrated circuit wafer.

    摘要翻译: 描述了使用掩模形成替代的相移掩模并在晶片上形成电路图案的方法。 光学邻近校正被添加到已经存储电路图案的描述的数据文件中,以获得第一修改的数据文件。 然后,对于具有密集线/空间图案的掩模区域和第三修改数据文件,第一修改数据文件被分成第二修改数据文件,对于具有隔离行空间图案的掩码区域,第二修改数据文件被分隔成第二修改数据文件。 然后将关键尺寸偏差添加到形成第四修改数据文件的第二修改数据文件中。 然后将第三修改数据文件和第四修改数据文件合并到单个第五修改数据文件中。 然后将第五修改的数据文件转换成替代的相移数据文件。 然后从替代相移数据文件形成替代的相移掩模。 然后对于光学邻近效应校正了替代相移掩模,并且添加了临界尺寸偏差。 然后可以将该替代的相移掩模用于形成集成电路晶片上的电路图案。

    Anti-reflection oxynitride film for tungsten-silicide substrates
    16.
    发明授权
    Anti-reflection oxynitride film for tungsten-silicide substrates 失效
    硅化钨衬底的抗反射氧氮化物膜

    公开(公告)号:US6133613A

    公开(公告)日:2000-10-17

    申请号:US18100

    申请日:1998-02-03

    CPC分类号: H01L21/32139 H01L21/0276

    摘要: The present invention provides an anti-reflection film for lithographic application on tungsten-silicide containing substrate. In one embodiment of the present invention, a structure for improving lithography patterning in integrated circuit comprises a tungsten-silicide layer, a diaphanous layer located above the tungsten-silicide layer, an anti-reflection layer located above the diaphanous layer, and a photoresist layer located above the anti-reflection layer for patterning the integrated circuit pattern.

    摘要翻译: 本发明提供了一种用于在含硅化钨的衬底上的光刻应用的抗反射膜。 在本发明的一个实施例中,用于改善集成电路中的光刻图案化的结构包括钨硅化物层,位于硅化钨层上方的透明层,位于透光层上方的抗反射层,以及光致抗蚀剂层 位于用于图案化集成电路图案的防反射层之上。

    Method for improving patterning of a conductive layer in an integrated
circuit
    17.
    发明授权
    Method for improving patterning of a conductive layer in an integrated circuit 失效
    用于改善集成电路中导电层图案化的方法

    公开(公告)号:US6037276A

    公开(公告)日:2000-03-14

    申请号:US958462

    申请日:1997-10-27

    IPC分类号: H01L21/3213 H01L21/31

    CPC分类号: H01L21/32139

    摘要: A method for improving the patterning process of a conductive layer using a dual-layer cap of oxynitride and silicon nitride. The oxynitride layer acts as a BARC (Bottom Anti-Reflective Coating) to improve photolithography process performance. The oxynitride is formed by plasma-enhanced chemical vapor deposition.

    摘要翻译: 使用氮氧化硅和氮化硅的双层盖来改善导电层的图案化工艺的方法。 氧氮化物层用作BARC(底部防反射涂层)以改善光刻工艺性能。 氧氮化物通过等离子体增强化学气相沉积形成。

    Method and apparatus for enhanced optical proximity correction
    18.
    发明授权
    Method and apparatus for enhanced optical proximity correction 有权
    用于增强光学邻近校正的方法和装置

    公开(公告)号:US08589830B2

    公开(公告)日:2013-11-19

    申请号:US13414183

    申请日:2012-03-07

    摘要: Provided is an integrated circuit (IC) design method. The method includes receiving an IC design layout having a feature with an outer boundary, performing a dissection on the feature to divide the outer boundary into a plurality of segments, and performing, using the segments, an optical proximity correction (OPC) on the feature to generate a modified outer boundary. The method also includes simulating a photolithography exposure of the feature with the modified outer boundary to create a contour and performing an OPC evaluation to determine if the contour is within a threshold. Additionally, the method includes repeating the performing a dissection, the performing an optical proximity correction, and the simulating if the contour does not meet the threshold, wherein each repeated dissection and each repeated optical proximity correction is performed on the modified outer boundary generated by the previously performed optical proximity correction.

    摘要翻译: 提供了一种集成电路(IC)设计方法。 该方法包括接收具有外边界特征的IC设计布局,对特征执行解剖以将外边界划分成多个段,以及使用该段执行特征上的光学邻近校正(OPC) 以产生修改的外边界。 该方法还包括模拟具有经修改的外边界的特征的光刻曝光以产生轮廓并执行OPC评估以确定轮廓是否在阈值内。 此外,该方法包括重复执行解剖,执行光学邻近校正,以及如果轮廓不满足阈值的模拟,其中每个重复解剖和每次重复的光学邻近校正在由 先前执行的光学邻近校正。

    METHOD AND APPARATUS FOR ENHANCED OPTICAL PROXIMITY CORRECTION
    19.
    发明申请
    METHOD AND APPARATUS FOR ENHANCED OPTICAL PROXIMITY CORRECTION 有权
    用于增强光学近似校正的方法和装置

    公开(公告)号:US20130239071A1

    公开(公告)日:2013-09-12

    申请号:US13414183

    申请日:2012-03-07

    IPC分类号: G06F17/50

    摘要: Provided is an integrated circuit (IC) design method. The method includes receiving an IC design layout having a feature with an outer boundary, performing a dissection on the feature to divide the outer boundary into a plurality of segments, and performing, using the segments, an optical proximity correction (OPC) on the feature to generate a modified outer boundary. The method also includes simulating a photolithography exposure of the feature with the modified outer boundary to create a contour and performing an OPC evaluation to determine if the contour is within a threshold. Additionally, the method includes repeating the performing a dissection, the performing an optical proximity correction, and the simulating if the contour does not meet the threshold, wherein each repeated dissection and each repeated optical proximity correction is performed on the modified outer boundary generated by the previously performed optical proximity correction.

    摘要翻译: 提供了一种集成电路(IC)设计方法。 该方法包括接收具有外边界特征的IC设计布局,对特征执行解剖以将外边界划分成多个段,以及使用该段执行特征上的光学邻近校正(OPC) 以产生修改的外边界。 该方法还包括模拟具有经修改的外边界的特征的光刻曝光以产生轮廓并执行OPC评估以确定轮廓是否在阈值内。 此外,该方法包括重复执行解剖,执行光学邻近校正,以及如果轮廓不满足阈值的模拟,其中每个重复解剖和每次重复的光学邻近校正在由 先前执行的光学邻近校正。