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    • 84. 发明授权
    • Interferometric lithography system and method used to generate equal path lengths of interfering beams
    • 用于产生相等路径长度的干涉光束的干涉光刻系统和方法
    • US07561252B2
    • 2009-07-14
    • US11320473
    • 2005-12-29
    • Harry SewellJohannes Jacobus Matheus Baselmans
    • Harry SewellJohannes Jacobus Matheus Baselmans
    • G03B27/54G03B27/72
    • G03B27/54G03F7/70408
    • A system and method are provided for writing patterns onto substrates. First and second beams are directed to converge and substantially overlap in a common region on a substrate. This can be done so that the first and second beams are mutually temporally coherent and spatially coherent in the region of overlap to form interference fringes to define a writing image. A beam width of the first and second beams is adjusted. This can be done so that respective path lengths of the beams are matched when they reach the common region to ensure the first and second beams are mutually spatially coherent and temporally coherent across an entire width of the common region. In one example, the substrate is moved with respect to the writing image, while writing patterns onto the substrate. In another example, the substrate remains stationary.
    • 提供了将图案写入基板的系统和方法。 引导第一和第二光束在基板上的公共区域中会聚并基本重叠。 这可以进行,使得第一和第二波束在重叠区域中相互时空相干和空间相干以形成干涉条纹以限定写入图像。 调整第一和第二光束的光束宽度。 这可以进行,使得当它们到达公共区域时,波束的相应路径长度匹配,以确保第一和第二波束在公共区域的整个宽度上相互空间相干和时间相干。 在一个示例中,当将图案写入基板时,基板相对于写入图像移动。 在另一个实例中,衬底保持静止。
    • 90. 发明授权
    • Lithographic apparatus and device manufacturing method utilizing data filtering
    • 利用数据滤波的平版印刷设备和器件制造方法
    • US07403265B2
    • 2008-07-22
    • US11093259
    • 2005-03-30
    • Patricius Aloysius Jacobus TinnemansJohannes Jacobus Matheus Baselmans
    • Patricius Aloysius Jacobus TinnemansJohannes Jacobus Matheus Baselmans
    • G03B27/54G03B27/42G03B27/32
    • G03F7/70191G03F7/70291G03F7/70433G03F7/70508
    • An apparatus and method are used to form patterns on a substrate. The comprise a projection system, a patterning device, a low-pass filter, and a data manipulation device. The projection system projects a beam of radiation onto the substrate as an array of sub-beams of radiation. The patterning device modulates the sub-beams of radiation to substantially produce a requested dose pattern on the substrate. The low-pass filter operates on pattern data derived from the requested dose pattern in order to form a frequency-clipped target dose pattern that comprises only spatial frequency components below a selected threshold frequency. The data manipulation device produces a control signal comprising spot exposure intensities to be produced by the patterning device, based on a direct algebraic least-squares fit of the spot exposure intensities to the frequency-clipped target dose pattern. In various examples, filters for pattern sharpening, image log slope control, and/or CD biasing can also be used.
    • 使用装置和方法在基板上形成图案。 包括投影系统,图案形成装置,低通滤波器和数据操作装置。 投影系统将辐射束投射到基板上作为辐射子束阵列。 图案形成装置调制辐射的子光束以在衬底上基本上产生所要求的剂量图案。 低通滤波器对从所请求的剂量图案导出的图形数据进行操作,以便形成仅包含低于选定阈值频率的空间频率分量的限幅目标剂量模式。 数据处理装置基于斑点曝光强度与限幅目标剂量图案的直接代数最小二乘拟合,产生包括由图案形成装置产生的点曝光强度的控制信号。 在各种示例中,还可以使用用于图案锐化,图像对数斜率控制和/或CD偏置的滤波器。