Invention Grant
- Patent Title: Method for evaluating lithography system and method for adjusting substrate-processing apparatus
- Patent Title (中): 评估光刻系统的方法和调整基板处理装置的方法
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Application No.: US09839202Application Date: 2001-04-23
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Publication No.: US06737207B2Publication Date: 2004-05-18
- Inventor: Yuji Imai
- Applicant: Yuji Imai
- Priority: JP2000-124506 20000425
- Main IPC: G03F900
- IPC: G03F900

Abstract:
When the ordinary exposure is performed, a wafer, to which a photoresist is applied by a resist coater, is transported onto a wafer stage of a projection exposure apparatus to perform the exposure, followed by development by a developing apparatus. When the characteristic is evaluated, respective shot areas on the wafer applied with the photoresist are exposed with an image of a predetermined evaluating mark in a narrow area in an effective field of a projection optical system of the projection exposure apparatus. The characteristic of the resist coater or the developing apparatus is evaluated by detecting a state of a resist pattern after the development. When the image formation characteristic of the projection exposure apparatus is evaluated, the wafer is exposed with images of a plurality of predetermined evaluating marks in a wide area in the effective field. The respective characteristics of the resist coater, the exposure apparatus, and the developing apparatus for constructing a lithography system can be evaluated respectively independently.
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