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US5843527A Coating solution applying method and apparatus 失效
涂布溶液施用方法和装置

Coating solution applying method and apparatus
摘要:
A method of applying a coating solution to spinning substrates, in which a controller causes a rotary support to spin a substrate at low speed with a predetermined supplying rotational frequency. The coating solution is supplied through a coating solution supply nozzle to a region centrally of the substrate spinning at low speed. The rotational frequency of the substrate is increased to a target rotational frequency before the coating solution supplied to the substrate spreads over an entire surface of the substrate. Then, the controller causes the rotary support to spin the substrate at high speed with a predetermined film-forming rotational frequency, thereby coating the surface of the substrate with a film of desired thickness. Also, an apparatus for performing such method.
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