Removal of line end shortening in microlithography and mask set for removal
    1.
    发明授权
    Removal of line end shortening in microlithography and mask set for removal 有权
    在微光刻和掩模组中去除线端缩短以进行去除

    公开(公告)号:US06492073B1

    公开(公告)日:2002-12-10

    申请号:US09839926

    申请日:2001-04-23

    IPC分类号: G03F900

    摘要: A mask set of two masks and a method of using these masks in a double exposure to avoid line shortening due to optical proximity effects is described. A pattern having pattern elements comprising a number of line segments, wherein each of the line segments has one or two free ends which are not connected to other mask pattern elements is to be transferred to a layer of resist. A first mask is formed by adding line extensions to each of the free ends of the line segments. A cutting mask is formed comprising rectangles enclosing each of the line extensions wherein one of the sides of said rectangles is coincident with the corresponding free end of said line segment. The first mask has opaque regions corresponding to the extended line segments. The cutting mask has transparent regions corresponding to the cutting pattern. In another embodiment a pattern having pattern openings comprising a number of line segments. In this embodiment the cutting pattern comprises rectangles having the same width as said line segments and add length to the line segments.

    摘要翻译: 描述了两个掩模的掩模组和在双重曝光中使用这些掩模以避免由于光学邻近效应引起的线缩短的方法。 具有包括多个线段的图形元素的图案,其中每个线段具有未连接到其它掩模图案元件的一个或两个自由端将被转移到抗蚀剂层。 通过向线段的每个自由端添加线延伸来形成第一掩模。 形成切割掩模,其包括围绕每个线延伸的矩形,其中所述矩形的一个侧面与所述线段的对应的自由端重合。 第一掩模具有对应于延伸线段的不透明区域。 切割掩模具有对应于切割图案的透明区域。 在另一个实施例中,具有包括多个线段的图案开口的图案。 在该实施例中,切割图案包括具有与所述线段相同宽度的矩形,并且对线段增加长度。

    Complementary replacement of material
    5.
    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。

    Method for metal correlated via split for double patterning
    6.
    发明授权
    Method for metal correlated via split for double patterning 有权
    用于双重图案化的金属相互分离的方法

    公开(公告)号:US08381139B2

    公开(公告)日:2013-02-19

    申请号:US13006608

    申请日:2011-01-14

    IPC分类号: G06F17/50

    摘要: The embodiments of via mask splitting methods for double patterning technology described enable via patterning to align to a metal layer underneath or overlying to reduce overlay error and to increase via landing. If adjacent vias violate the G0-mask-split-rule for space or pitch (or both) between vias, the mask assignment of end vias are given higher priority to ensure good landing of end vias, since they are at higher risk of mislanding. The metal correlated via mask splitting methods enable better via performance, such as lower via resistance, and higher via yield.

    摘要翻译: 所描述的用于双重图案化技术的通孔掩模分裂方法的实施例使得能够经由图案化以对准下面的金属层或覆盖以减少覆盖误差并增加通过着陆。 如果相邻的通孔违反了通孔之间的空间或间距(或两者)的G0-掩模分割规则,则优先考虑末端通孔的掩模分配,以确保最终通孔的良好着陆,因为它们具有较高的误放置风险。 通过掩模分离方法相关的金属能够实现更好的通过性能,例如较低的通孔电阻和较高的通孔产量。

    Apparatus and method for immersion lithography
    8.
    发明授权
    Apparatus and method for immersion lithography 有权
    浸没式光刻装置及方法

    公开(公告)号:US07091502B2

    公开(公告)日:2006-08-15

    申请号:US10844178

    申请日:2004-05-12

    IPC分类号: H01L21/027 G03F7/20

    CPC分类号: G03F7/70341

    摘要: An immersion lithography system for semiconductor manufacturing provides a lens assembly that moves relative to a wafer surface and includes a nozzle and drain assembly that is coupled to, and moves along, the lens assembly. The nozzle and drain assemblies may be disposed circumferentially opposite each other about the lens or an annular ring may be provided that surrounds the lens and includes a plurality of selectable alternating nozzles and drains. The nozzle and drain assemblies may rotatably surround the lens. At least a portion of the wafer being patterned is immersed in a liquid provided by the nozzle assembly and a flow direction is controlled by manipulating the nozzle and drain assemblies. Flow direction may be advantageously directed outwardly to reduce particulate contamination.

    摘要翻译: 用于半导体制造的浸没式光刻系统提供了相对于晶片表面移动的透镜组件,并且包括联接到透镜组件并沿着透镜组件移动的喷嘴和排出组件。 喷嘴和排出组件可以围绕透镜周向地相对设置,或者可以设置围绕透镜的环形环,并且包括多个可选择的交替喷嘴和排水沟。 喷嘴和排出组件可旋转地围绕透镜。 将被图案化的晶片的至少一部分浸入由喷嘴组件提供的液体中,并且通过操纵喷嘴和排出组件来控制流动方向。 可以有利地向外指向流动方向以减少颗粒污染。

    Multiple edge enabled patterning
    9.
    发明授权
    Multiple edge enabled patterning 有权
    多边缘启用图案化

    公开(公告)号:US08730473B2

    公开(公告)日:2014-05-20

    申请号:US12892403

    申请日:2010-09-28

    IPC分类号: G01B11/00 H01L21/76 H01L23/58

    摘要: Provided is an alignment mark having a plurality of sub-resolution elements. The sub-resolution elements each have a dimension that is less than a minimum resolution that can be detected by an alignment signal used in an alignment process. Also provided is a semiconductor wafer having first, second, and third patterns formed thereon. The first and second patterns extend in a first direction, and the third pattern extend in a second direction perpendicular to the first direction. The second pattern is separated from the first pattern by a first distance measured in the second direction. The third pattern is separated from the first pattern by a second distance measured in the first direction. The third pattern is separated from the second pattern by a third distance measured in the first direction. The first distance is approximately equal to the third distance. The second distance is less than twice the first distance.

    摘要翻译: 提供具有多个次分辨率元素的对准标记。 子分辨率元素各自具有小于可由对准过程中使用的对准信号检测的最小分辨率的维度。 还提供了其上形成有第一,第二和第三图案的半导体晶片。 第一和第二图案在第一方向上延伸,并且第三图案沿垂直于第一方向的第二方向延伸。 第二图案与第一图案分离在第二方向上测量的第一距离。 第三图案与第一图案分离在第一方向上测量的第二距离。 第三图案与第二图案分离在第一方向上测量的第三距离。 第一距离近似等于第三距离。 第二距离小于第一距离的两倍。

    Immersion optical projection system
    10.
    发明申请
    Immersion optical projection system 有权
    浸入式光学投影系统

    公开(公告)号:US20050286030A1

    公开(公告)日:2005-12-29

    申请号:US11009505

    申请日:2004-12-10

    IPC分类号: G03B27/52 G03F7/20

    CPC分类号: G03F7/70341

    摘要: An immersion optical projection system for photolithography is provided. A transparent plate is located between a last lens element and the wafer during a usage of the system. The transparent plate has a lens-side surface and a wafer-side surface. The system is adapted to have a layer of lens-side fluid located between the last lens element and the lens-side surface of the transparent plate, e.g., when the last lens element is operably located over the wafer during a photolithography process. The system is also adapted to have a layer of wafer-side fluid located between the wafer-side surface of the transparent plate and the wafer, during a usage of the system. The wafer-side fluid may or may not be fluidly connected to the lens-side fluid. The wafer-side fluid may or may not differ from the lens-side fluid.

    摘要翻译: 提供了一种用于光刻的浸没式光学投影系统。 在使用系统期间,透明板位于最后一个透镜元件和晶片之间。 透明板具有透镜侧表面和晶片侧表面。 该系统适于具有位于最后透镜元件和透明板的透镜侧表面之间的透镜侧流体层,例如当光刻工艺期间最后一个透镜元件可操作地位于晶片上方时。 该系统还适于在系统的使用期间具有位于透明板的晶片侧表面和晶片之间的晶片侧流体层。 晶片侧流体可以或可以不流体地连接到透镜侧流体。 晶片侧流体可以或可以不与透镜侧流体不同。