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    • 4. 发明授权
    • Mask overlay control
    • 面膜叠加控制
    • US09017903B2
    • 2015-04-28
    • US13947180
    • 2013-07-22
    • Taiwan Semiconductor Manufacturing Co., Ltd.
    • Chih-Chiang TuChun-Lang ChenJong-Yuh ChangChien-Chih ChenChen-Shao Hsu
    • G03F1/22G03F1/24G03F1/26G03F1/70G03F1/82
    • G03F1/70G03F1/22G03F1/24G03F1/26G03F1/82G03F7/70783
    • Some embodiments of the present disclosure relate to a method of patterning a workpiece with a mask, wherein a scale factor between a geometry of the mask and a corresponding target shape of the mask is determined. The scale factor results from thermal expansion of the mask and geometry due to heating of the mask during exposure to radiation by an electron beam (e-beam) in the mask manufacturing process. A number of radiation pulses necessary to dispose the geometry on the mask is determined. A scale factor for the mask is then determined from the number of pulses. The target shape is then generated on the mask by re-scaling the geometry according to the scale factor prior to mask manufacturing. This method compensates for thermal deformation due to e-beam heating to improve OVL variability in advanced technology nodes.
    • 本公开的一些实施例涉及用掩模图案化工件的方法,其中确定掩模的几何形状与掩模的对应目标形状之间的比例因子。 缩放因子是由掩模的热膨胀和几何形状引起的,这是由于在掩模制造过程中通过电子束(电子束)暴露于辐射期间掩模的加热。 确定将几何形状设置在掩模上所需的许多辐射脉冲。 然后根据脉冲数确定掩模的比例因子。 然后通过在掩模制造之前根据比例因子重新缩放几何形状,在掩模上生成目标形状。 该方法补偿了电子束加热引起的热变形,提高了先进技术节点的OVL变化。
    • 5. 发明申请
    • MASK OVERLAY CONTROL
    • 掩蔽覆盖控制
    • US20150024306A1
    • 2015-01-22
    • US13947180
    • 2013-07-22
    • Taiwan Semiconductor Manufacturing Co., Ltd.
    • Chih-Chiang TuChun-Lang ChenJong-Yuh ChangChien-Chih ChenChen-Shao Hsu
    • G03F1/82
    • G03F1/70G03F1/22G03F1/24G03F1/26G03F1/82G03F7/70783
    • Some embodiments of the present disclosure relate to a method of patterning a workpiece with a mask, wherein a scale factor between a geometry of the mask and a corresponding target shape of the mask is determined. The scale factor results from thermal expansion of the mask and geometry due to heating of the mask during exposure to radiation by an electron beam (e-beam) in the mask manufacturing process. A number of radiation pulses necessary to dispose the geometry on the mask is determined. A scale factor for the mask is then determined from the number of pulses. The target shape is then generated on the mask by re-scaling the geometry according to the scale factor prior to mask manufacturing. This method compensates for thermal deformation due to e-beam heating to improve OVL variability in advanced technology nodes.
    • 本公开的一些实施例涉及用掩模图案化工件的方法,其中确定掩模的几何形状与掩模的对应目标形状之间的比例因子。 缩放因子是由掩模的热膨胀和几何形状引起的,这是由于在掩模制造过程中通过电子束(电子束)暴露于辐射期间掩模的加热。 确定将几何形状设置在掩模上所需的许多辐射脉冲。 然后根据脉冲数确定掩模的比例因子。 然后通过在掩模制造之前根据比例因子重新缩放几何形状,在掩模上生成目标形状。 该方法补偿了电子束加热引起的热变形,提高了先进技术节点的OVL变化。