发明名称 Method for discharging chemical solution
摘要 An object is to provide a chemical solution application apparatus capable of applying a chemical solution evenly and without irregularity by a spin coating method. A plurality of nozzles are provided for applying a chemical solution to an application object that is fixed over a stage. Each of the nozzles is individually mobile in vertical and horizontal directions. For this reason, controlling a discharging point or pattern is possible, and application responding to a wider viscosity range of chemical solutions is possible. By implementing the present invention, a chemical solution application apparatus equipped with a discharging method of a chemical solution by which a coating film having a small film thickness distribution over an entire substrate and an even thickness can be obtained, as well as for which use efficiency is improved by cutting down on waste of a chemical solution to be discharged.
申请公布号 US8722135(B2) 申请公布日期 2014.05.13
申请号 US20100842585 申请日期 2010.07.23
申请人 TATEISHI FUMINORI;SEMICONDUCTOR ENERGY LABORATORY CO., LTD. 发明人 TATEISHI FUMINORI
分类号 B05D5/10;B05B7/08;G03D5/04 主分类号 B05D5/10
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