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    • 4. 发明授权
    • Method of aligning a mask in photolithographic process
    • 在光刻工艺中对准掩模的方法
    • US5853927A
    • 1998-12-29
    • US842352
    • 1997-04-24
    • Chien Chao Huang
    • Chien Chao Huang
    • G03F1/00G03F7/20G03F9/00
    • G03F7/707G03F1/42G03F9/7007
    • A method for aligning a mask in a photolithographic process is provided. This method allows the technician to easily see by the naked eye or by use of a microscope any misalignment of the mask, such that the misalignment can be easily corrected. The method includes providing the mask with an opaque frame having four corners, forming a plurality of alignment patterns on a platform where the mask is to be placed, and performing an alignment of the mask by visually checking for misalignment of the mask with reference to the alignment patterns on the platform. The alignment patterns may include a plurality of parallel-spaced bars both in the crosswise and lengthwise directions, to allow the technician to visually check for any misalignment of the mask and thereby shift the mask pellicle to the aligned position.
    • 提供了一种用于在光刻工艺中对准掩模的方法。 该方法允许技术人员通过肉眼或使用显微镜容易地观察到掩模的不对准,使得可以容易地校正不对准。 该方法包括向掩模提供具有四个角的不透明框架,在要放置掩模的平台上形成多个对准图案,并且通过目视检查掩模的未对准来参照掩模的对准来执行掩模的对准 平台上的对齐模式。 对准图案可以在横向和纵向方向上包括多个平行隔开的杆,以允许技术人员目视地检查掩模的任何未对准,从而将掩模防护薄膜移动到对准位置。