发明名称 FOCUS TEST MASK, FOCUS MEASUREING METHOD, AND EXPOSURE DEVICE
摘要 A test pattern projected on a wafer (W) through a projection optical system (PL) is provided on a focus test pattern. The focus test pattern has line patterns (12a-12f) arranged side by side in the measurement direction, a phase shift portion (13) disposed in a region near each of the line patterns and shifting the phase of passing light, and standard patterns (11a-11d) for obtaining images as a standard used in measurement of line pattern image misalignment. Intervals of the line patterns are set such that each line pattern can be considered equivalent to an isolated line.
申请公布号 KR20060024450(A) 申请公布日期 2006.03.16
申请号 KR20057025527 申请日期 2005.12.31
申请人 NIKON CORPORATION 发明人 KONDO SHINJIRO
分类号 H01L21/027;G03F1/00;G03F7/20;G03F7/207 主分类号 H01L21/027
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