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    • 10. 发明授权
    • Chemical liquid treatment apparatus
    • 化学液体处理设备
    • US06423139B1
    • 2002-07-23
    • US09153590
    • 1998-09-15
    • Futoshi ShimaiKoichi NagasawaJunji Kutsuzawa
    • Futoshi ShimaiKoichi NagasawaJunji Kutsuzawa
    • B05C502
    • H01L21/6715B05C5/0254B05C11/08H01L21/67051
    • A liquid chemical treatment apparatus includes a coating apparatus for applying a coating liquid such as resist onto the surface of a substantially planar substrate such as a glass substrate. The coating apparatus includes a nozzle with an elongate injection outlet such as a slit with a width substantially the same as that of the substrate, and a liquid circulating passage connected to the nozzle for supplying the coating liquid to the nozzle. Mechanisms are provided with the circulating passage and the nozzle to remove air from the liquid, and to maintain the circulating liquid at a substantially constant temperature and a substantially constant flow rate. When performing a coating operation with the coating liquid, a flow amount thereof is increased up to 1,500 though 3,000 ml/min, from a condition under which the liquid is prevented from dropping from the slit-like injection outlet while circulating within the circulating passage at a flow rate of 500 through 700 ml/min, for example, by closing a valve or by means of a pump 35 included with the passage. The liquid output from the slit-like injection outlet 4a takes on the form of a curtain to be applied over substantially the entire surface of the substrate, without any drops of the coating liquid remaining within the nozzle after the coating operation.
    • 液体化学处理装置包括用于将诸如抗蚀剂的涂布液施加到诸如玻璃基板的基本平坦的基板的表面上的涂覆装置。 涂布装置包括具有细长的注射口的喷嘴,例如宽度与基底宽度基本相同的狭缝,以及连接到喷嘴的液体循环通道,用于向喷嘴供应涂布液。 提供了循环通道和喷嘴以从液体中除去空气并且将循环液体保持在基本上恒定的温度和基本上恒定的流速的机构。 当用涂布液进行涂布操作时,其流量可以从循环通道中循环的液体被防止从狭缝状喷射出口滴落的状态增加到1500〜3000ml / min 流量为500至700ml / min,例如通过关闭阀或通过通道附带的泵35。 从狭缝状喷射出口输出的液体呈窗帘的形式施加在基体的基本整个表面上,涂布操作之后没有任何滴落的喷涂液体残留在喷嘴内。