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    • 1. 发明申请
    • Eigen decomposition based OPC model
    • 基于特征分解的OPC模型
    • US20050149902A1
    • 2005-07-07
    • US10981750
    • 2004-11-05
    • Xuelong ShiRobert SochaThomas LaidigDouglas Broeke
    • Xuelong ShiRobert SochaThomas LaidigDouglas Broeke
    • G03F1/00G03F1/36G03F7/20G06F17/50G06K9/00H01L21/027
    • G03F1/36G03F7/705
    • Model OPC is developed based on eigen decomposition of an aerial image expected to be produced by a mask pattern on a surface of a resist. With the eigen decomposition method the aerial image intensity distribution around a point (x, y) is accurately described in the model. A scalar approach may be used in the eigen decomposition model which treats the light wave through the mask as a scalar quantity. A eigen decomposition alternatively may use a vector approach which utilizes a vector to describe the light wave and the pupil function. A predicted SPIF may be generated from the aerial image which may be used to verify the mask modeling process by comparing the predicted SPIF to an experimentally determined SPIF. The model OPC, once calibrated, may be used to evaluate performance of a mask and refine features of the mask.
    • 基于通过抗蚀剂表面上的掩模图案预期产生的空间图像的特征分解开发OPC模型。 利用特征分解方法,在模型中准确描述了点(x,y)周围的空间图像强度分布。 在本征分解模型中可以使用标量法,其将通过掩模的光波视为标量。 本征分解可以使用向量来描述光波和瞳孔函数的矢量方法。 可以从空间图像生成预测的SPIF,其可以用于通过将预测的SPIF与实验确定的SPIF进行比较来验证掩模建模过程。 模型OPC,一旦校准,可以用于评估掩模的性能和细化掩模的特征。
    • 3. 发明授权
    • Optimized polarization illumination
    • 优化极化照明
    • US08395757B2
    • 2013-03-12
    • US12773775
    • 2010-05-04
    • Robert SochaDonis FlagelloSteve Hansen
    • Robert SochaDonis FlagelloSteve Hansen
    • G03B27/72G03B27/54
    • G03F7/705G03F7/70125G03F7/70341G03F7/70566G03F7/70616
    • Disclosed concepts include a method of optimizing polarization of an illumination of a pattern to be formed in a surface of a substrate. Polarized illumination is optimized by determining an illumination intensity for at least one point on an illuminator for at least two polarization states, determining image log slope for the at least one point on the illuminator for the at least two polarization states, determining a maximum image log slope (ILS) where the ILS is near zero for the at least one point on the illuminator, and selecting an optimal polarization state corresponding to the at least two polarization states that minimizes an ILS for the at least one point on the illuminator. This may be repeated for a plurality of points on the illuminator.
    • 公开的概念包括优化待形成在衬底的表面中的图案的照明的偏振的方法。 通过确定至少两个偏振状态的照明器上的至少一个点的照明强度来确定极化照明,确定用于至少两个偏振状态的照明器上的至少一个点的图像对数斜率,确定最大图像记录 斜率(ILS),其中ILS对于照明器上的至少一个点接近于零,并且选择对应于使得照明器上的至少一个点的ILS最小化的至少两个偏振状态的最佳极化状态。 对于照明器上的多个点可以重复这一点。
    • 6. 发明申请
    • Optimized polarization illumination
    • 优化极化照明
    • US20050134822A1
    • 2005-06-23
    • US10921878
    • 2004-08-20
    • Robert SochaDonis FlagelloSteve Hansen
    • Robert SochaDonis FlagelloSteve Hansen
    • G03F7/20H01L21/027G03B27/72
    • G03F7/705G03F7/70125G03F7/70341G03F7/70566G03F7/70616
    • Disclosed concepts include a method of optimizing polarization of an illumination of a pattern to be formed in a surface of a substrate. Polarized illumination is optimized by determining an illumination intensity for at least one point on an illuminator for at least two polarization states, determining image log slope for the at least one point on the illuminator for the at least two polarization states, determining a maximum image log slope (ILS) where the ILS is near zero for the at least one point on the illuminator, and selecting an optimal polarization state corresponding to the at least two polarization states that minimizes an ILS for the at least one point on the illuminator. This may be repeated for a plurality of points on the illuminator.
    • 公开的概念包括优化待形成在衬底的表面中的图案的照明的偏振的方法。 通过确定至少两个偏振状态的照明器上的至少一个点的照明强度来确定极化照明,确定用于至少两个偏振状态的照明器上的至少一个点的图像对数斜率,确定最大图像记录 斜率(ILS),其中ILS对于照明器上的至少一个点接近于零,并且选择对应于使得照明器上的至少一个点的ILS最小化的至少两个偏振状态的最佳极化状态。 对于照明器上的多个点可以重复这一点。
    • 8. 发明申请
    • Source and Mask Optimization by Changing Intensity and Shape of the Illumination Source
    • 通过改变照明源的强度和形状的源和掩模优化
    • US20090053621A1
    • 2009-02-26
    • US12186410
    • 2008-08-05
    • Robert Socha
    • Robert Socha
    • G03F1/00
    • G06T7/001G03F7/70091G03F7/70125G03F7/70425G03F7/70433G03F7/705
    • An illumination source is optimized by changing the intensity and shape of the illumination source to form an image in the image plane that maximizes the minimum ILS at user selected fragmentation points while forcing the intensity at the fragmentation points to be within a small intensity range. An optimum mask may be determined by changing the magnitude and phase of the diffraction orders to form an image in the image plane that maximizes the minimum ILS at user selected fragmentation points while forcing the intensity at the fragmentation points to be within a small intensity range. Primitive rectangles having a size set to a minimum feature size of a mask maker are assigned to the located minimum and maximum transmission areas ad centered at a desired location. The edges of the primitive rectangle are varied to match optimal diffraction orders O(m,n). The optimal CPL mask OCPL(x,y) is then formed.
    • 通过改变照射源的强度和形状来优化照明光源,以在图像平面中形成图像,使得在用户选择的碎片点处的最小ILS最大化,同时迫使碎裂点处的强度处于小的强度范围内。 可以通过改变衍射级的大小和相位来确定最佳掩模,以在图像平面中形成使用户选择的碎片点处的最小ILS最大化的图像,同时迫使碎裂点处的强度在小的强度范围内。 具有设置为掩模制造者的最小特征尺寸的尺寸的原始矩形被分配给位于期望位置的所定位的最小和最大传输区域。 改变原始矩形的边缘以匹配最佳衍射阶数O(m,n)。 然后形成最佳CPL掩模OCPL(x,y)。
    • 9. 发明申请
    • Optimized polarization illumination
    • 优化极化照明
    • US20080043215A1
    • 2008-02-21
    • US11907648
    • 2007-10-16
    • Robert SochaDonis FlagelloSteve Hansen
    • Robert SochaDonis FlagelloSteve Hansen
    • G03B27/72
    • G03F7/705G03F7/70125G03F7/70341G03F7/70566G03F7/70616
    • Disclosed concepts include a method of optimizing polarization of an illumination of a pattern to be formed in a surface of a substrate. Polarized illumination is optimized by determining an illumination intensity for at least one point on an illuminator for at least two polarization states, determining image log slope for the at least one point on the illuminator for the at least two polarization states, determining a maximum image log slope (ILS) where the ILS is near zero for the at least one point on the illuminator, and selecting an optimal polarization state corresponding to the at least two polarization states that minimizes an ILS for the at least one point on the illuminator. This may be repeated for a plurality of points on the illuminator.
    • 公开的概念包括优化待形成在衬底的表面中的图案的照明的偏振的方法。 通过确定至少两个偏振状态的照明器上的至少一个点的照明强度来确定极化照明,确定用于至少两个偏振状态的照明器上的至少一个点的图像对数斜率,确定最大图像记录 斜率(ILS),其中ILS对于照明器上的至少一个点接近于零,并且选择对应于使得照明器上的至少一个点的ILS最小化的至少两个偏振状态的最佳极化状态。 对于照明器上的多个点可以重复这一点。