会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明申请
    • DIFFRACTION BASED OVERLAY METROLOGY TOOL AND METHOD
    • 基于DIFFRACTION的OVERLAY计量工具和方法
    • WO2009078708A1
    • 2009-06-25
    • PCT/NL2008/050785
    • 2008-12-09
    • ASML NETHERLANDS B.V.DEN BOEF, Arie, Jeffrey
    • DEN BOEF, Arie, Jeffrey
    • G03F7/20
    • G01N21/95607G03F7/7015G03F7/70633
    • A method for determining overlay between a first grating (110) and a second grating (120) on a substrate (100), the second grating (120) on top of the first grating(110), the second grating (120) having substantially identical pitch (P1) as the first grating (110), the second and first gratings forming a composite grating (110,120), the method including providing a first illumination beam (IB) for illuminating the composite grating (110,120) under an angle of incidence (β) along a first horizontal direction (D1) along the surface of the substrate, and measuring a first intensity (i+) of a first order diffracted beam (B+) from the composite grating (110,120); providing a second illumination beam for illuminating the composite grating (11θ!i2O) under the angle of incidence (-β) along a second horizontal direction (D2) along the surface of the substrate, wherein the second horizontal direction (D2) is opposite to the first horizontal direction (DI)1 and measuring a second intensity (i-) of a minus first order diffracted beam (B-) from the composite grating (110,120).
    • 一种用于确定衬底(100)上的第一光栅(110)和第二光栅(120)之间的叠层的方法,所述第二光栅(120)在所述第一光栅(110)的顶部上,所述第二光栅(120) 与第一光栅(110)相同的间距(P1),第二和第一光栅形成复合光栅(110,120),该方法包括提供用于在入射角度下照射复合光栅(110,120)的第一照明光束(IB) 沿着所述基板的表面沿着第一水平方向(D1)沿着所述复合光栅(110,120)测量所述第一级衍射光束(B +)的第一强度(i +); 提供第二照明光束,用于沿着基板的表面沿着第二水平方向(D2)在入射角(-β)处照射复合光栅(11πi2O),其中第二水平方向(D2)相反 到第一水平方向(DI)1并且从复合光栅(110,120)测量负一级衍射光束(B-)的第二强度(i-)。