该过程创建一个原始板,用于将设计好的图案转移到晶圆上。在此介绍我们在光掩模创建过程中使用的产品。
光掩模制造是半导体生产的一个关键环节,涉及创建精准图案,这些图案随后在光刻工艺中转移到半导体晶圆上。光掩模本质上是一种高精度模板,承载着详细的电路设计,作为在晶圆上创建微观特点的模板。制造过程始于从电路或图案设计阶段获得的设计数据。光掩模的质量和精度至关重要,因为光掩模上的任何缺陷或误差都会直接影响终半导体器件的性能。制造完成后,光掩模会经过全面的检查和验证流程,以确保其符合严格标准。
光掩模检查的主要目的在于验证光掩模的完整性,包括空白掩模质量、电路图案的精度、无缺陷以及整体质量。以下介绍的检查方法常用于当前生产环境,包括光学检查、电子光束检查、复检站、缺陷分类、修复与验证以及掩模计量。检查过程主要包括两个子过程:空白掩模检查和图案掩模检查。
空白掩模检查确保这些基板无可能导致终半导体器件出现错误的缺陷或瑕疵。空白掩模检查的主要目的是识别并消除掩模上可能在光刻工艺中转移到晶圆上的任何缺陷或污染物。掩模上的缺陷可能导致半导体器件出现缺陷或无法正常工作。空白掩模缺陷可能包括粒子、针孔、划痕和污染。
一旦通过一系列光刻步骤将电路图案添加到掩模上,图案化掩模将接受单独的检查过程。此阶段涉及评估掩模上蚀刻或沉积图案的精度和准确性。图案掩模检查确保预期的电路设计在掩模上得到忠实呈现,重点识别图案偏移、缺失特点或任何可能影响半导体制造过程质量的缺陷。
EQ-10 产生用于 EUV 光化掩模检查的 13.5nm EUV 光。专利无电极 Z-pinch 技术可提供稳定、低碎屑、紧凑且经济高效的 EUV 光。
该设备检查光掩模上的异物和图案缺陷等。X 射线源和 X 射线相机可实现对微小异物和微缺陷的无损、非接触式检查。
这种高灵敏度探测器用于各种缺陷检查、终点监测及其他用途。将其与高速磷光体和闪烁体相结合,可检测到光电二极管无法探测到的微弱电子光束,从而可用于扫描电子显微镜 (SEM) 及其他用途。
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