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    • 1. 发明申请
    • IN-DIE FOCUS MONITORING WITH BINARY MASK
    • 用二进制掩模进行内置聚焦监控
    • US20100002214A1
    • 2010-01-07
    • US12167808
    • 2008-07-03
    • Ryoung-han Kim
    • Ryoung-han Kim
    • G03B27/52
    • G03B27/52G03F7/70641
    • Focus monitoring for a photolithographic applications is provided by illuminating a photoresist layer with a light beam transmitted through a first binary mask to define a circuit pattern on an underlying substrate and then illuminating the photoresist layer with an unbalanced off-axis light beam transmitted through a second binary mask. The second mask contains a shifting feature configuration in one portion, while another portion blocks light transmission to the chip design area of the photoresist. After development of the photoresist layer, the pattern formed by illumination of the second mask can be compared with a predefined reference feature on the photoresist layer to determine whether a shift, if any, is within acceptable focus limits.
    • 通过用透射通过第一二进制掩模的光束照射光致抗蚀剂层来限定在下面的衬底上的电路图案,然后用不平衡的离轴光束照射光致抗蚀剂层来提供用于光刻应用的聚焦监控,所述非平衡离轴光束透射通过第二 二进制掩码 第二掩模包含一部分中的移动特征构造,而另一部分遮挡到光致抗蚀剂的芯片设计区域的光透射。 在光致抗蚀剂层的显影之后,通过第二掩模的照射形成的图案可以与光致抗蚀剂层上的预定参考特征进行比较,以确定移位(如果有的话)是否在可接受的聚焦限度内。
    • 4. 发明申请
    • MULTIPLE EXPOSURE TECHNIQUE USING OPC TO CORRECT DISTORTION
    • 使用OPC纠正错误的多次曝光技术
    • US20090040483A1
    • 2009-02-12
    • US11834979
    • 2007-08-07
    • Yunfei DengJongwook KyeRyoung-han Kim
    • Yunfei DengJongwook KyeRyoung-han Kim
    • G03B27/42G03B27/68
    • G03B27/42
    • Accurate ultrafine patterns are formed using a multiple exposure technique comprising implementing an OPC procedure to form an exposure reticle to compensate for distortion of an overlying resist pattern caused by an underlying resist pattern. Embodiments include forming a first resist pattern in a first resist layer over a target layer using a first exposure reticle, forming a second exposure reticle by an OPC technique to compensate for distortion of a second resist pattern caused by the underlying first resist pattern, depositing a second resist layer on the first resist pattern, forming the second resist pattern in the second resist layer using the second exposure reticle, the first and second resist patterns constituting a final resist mask, and forming a pattern in the target layer using the final resist mask.
    • 使用多重曝光技术形成精确的超细纹图案,该技术包括实施OPC程序以形成曝光掩模版,以补偿由下面的抗蚀剂图案引起的上覆抗蚀剂图案的变形。 实施例包括使用第一曝光掩模在目标层上在第一抗蚀剂层中形成第一抗蚀剂图案,通过OPC技术形成第二曝光掩模版,以补偿由下面的第一抗蚀剂图案引起的第二抗蚀剂图案的变形, 在第一抗蚀剂图案上的第二抗蚀剂层,使用第二曝光掩模在第二抗蚀剂层中形成第二抗蚀剂图案,第一和第二抗蚀剂图案构成最终抗蚀剂掩模,并且使用最终抗蚀剂掩模在目标层中形成图案 。
    • 7. 发明授权
    • Spacer lithography
    • 间隔光刻
    • US08642474B2
    • 2014-02-04
    • US11775727
    • 2007-07-10
    • Ryoung-han KimYunfei DengThomas I. WallowBruno La Fontaine
    • Ryoung-han KimYunfei DengThomas I. WallowBruno La Fontaine
    • H01L21/311
    • G03F7/0035G03F7/40H01L21/0274H01L21/32139
    • Ultrafine dimensions are accurately and efficiently formed in a target layer using a spacer lithographic technique comprising forming a first mask pattern, forming a cross-linkable layer over the first mask pattern, forming a cross-linked spacer between the first mask pattern and cross-linkable layer, removing the cross-linkable layer, cross-linked spacer from the upper surface of the first mask pattern and the first mask pattern to form a second mask pattern comprising remaining portions of the cross-linked spacer, and etching using the second mask pattern to form an ultrafine pattern in the underlying target layer. Embodiments include forming the first mask pattern from a photoresist material capable of generating an acid, depositing a cross-linkable material comprising a material capable of undergoing a cross-linking reaction in the presence of an acid, and removing portions of the non-cross-linked layer and cross-linked spacer from the upper surface of the first mask pattern before removing the remaining portions of the first mask pattern and remaining noncross-linked layer.
    • 使用间隔光刻技术在目标层中精确有效地形成超细尺寸,包括形成第一掩模图案,在第一掩模图案之上形成可交联层,在第一掩模图案和可交联的第一掩模图案之间形成交联间隔物 从第一掩模图案的上表面和第一掩模图案移除可交联层,交联间隔物以形成包括交联间隔物的剩余部分的第二掩模图案,并使用第二掩模图案进行蚀刻 以在底层目标层中形成超细纹理图案。 实施例包括从能够产生酸的光致抗蚀剂材料形成第一掩模图案;沉积包含可在酸存在下进行交联反应的材料的可交联材料,以及去除部分非交联材料; 在去除第一掩模图案的剩余部分和剩余的非交联层之前,从第一掩模图案的上表面连接层和交联间隔物。
    • 10. 发明申请
    • SPACER DOUBLE PATTERNING THAT PRINTS MULTIPLE CD IN FRONT-END-OF-LINE
    • 在前端打印多张CD的间隔双重图案
    • US20120043646A1
    • 2012-02-23
    • US12860327
    • 2010-08-20
    • Ryoung-han Kim
    • Ryoung-han Kim
    • H01L21/306H01L29/02
    • H01L21/32139H01L21/0337H01L21/0338H01L21/3086H01L21/3088
    • A semiconductor device is formed with sub-resolution features and at least one additional feature having a relatively larger critical dimension using only two masks. An embodiment includes forming a plurality of first mandrels, having a first width, and at least one second mandrel, having a second width greater than the first width, overlying a target layer using a first mask, forming sidewall spacers along the length and width of the first and second mandrels, forming a filler adjacent each sidewall spacer, the filler having the first width, removing the filler adjacent sidewall spacers along the widths of the first and second mandrels using a second mask, removing the sidewall spacers, and etching the target layer between the filler and the first and second mandrels, thereby forming at least two target features with different critical dimensions. Embodiments further include using a third mask to form a semiconductor device having further features with a different critical dimension, but the same pitch, as the sub-resolution features.
    • 半导体器件形成有子分辨率特征,并且至少一个附加特征具有仅使用两个掩模的相对较大的临界尺寸。 一个实施例包括形成具有第一宽度的多个第一心轴和具有大于第一宽度的第二宽度的至少一个第二心轴,使用第一掩模覆盖目标层,沿着第一宽度的长度和宽度形成侧壁间隔物 所述第一和第二心轴在每个侧壁间隔物附近形成填料,所述填料具有第一宽度,使用第二掩模,沿着所述第一和第二心轴的宽度除去所述填料相邻的侧壁间隔物,去除所述侧壁间隔物,并蚀刻所述靶 填充物与第一和第二心轴之间的层,从而形成具有不同临界尺寸的至少两个目标特征。 实施例还包括使用第三掩模来形成半导体器件,该半导体器件具有与子分辨特征具有不同临界尺寸但具有相同间距的另外特征。