METHOD AND APPARATUS FOR PROCESSING SUBSTRATE
First Claim
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1. A method for processing a substrate, the method comprising:
- a process of processing the substrate by dispensing a processing liquid onto the substrate through a nozzle having a discharge passage formed therein; and
a storage process of storing the nozzle, with the processing liquid sucked back into the discharge passage,wherein in the storage process, the nozzle is stored, with a first gas layer, a first contamination prevention liquid layer, a second gas layer, and a second contamination prevention liquid layer sequentially formed in the discharge passage, andwherein the first gas layer is located adjacent to the processing liquid.
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Abstract
The inventive concept relates to a substrate processing method and apparatus for providing a plurality of gas layers and contamination prevention liquid layers in a nozzle after the nozzle dispenses photoresist onto a substrate, thereby preventing photoresist in the nozzle from making contact with air and thus preventing the photoresist in the nozzle from being solidified by a reaction of the photoresist with air.
7 Citations
18 Claims
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1. A method for processing a substrate, the method comprising:
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a process of processing the substrate by dispensing a processing liquid onto the substrate through a nozzle having a discharge passage formed therein; and a storage process of storing the nozzle, with the processing liquid sucked back into the discharge passage, wherein in the storage process, the nozzle is stored, with a first gas layer, a first contamination prevention liquid layer, a second gas layer, and a second contamination prevention liquid layer sequentially formed in the discharge passage, and wherein the first gas layer is located adjacent to the processing liquid. - View Dependent Claims (2, 3, 4, 5)
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6. A method for processing a substrate, the method comprising:
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a step of processing the substrate by dispensing a processing liquid onto the substrate through a nozzle; a first gas layer forming step of forming a first gas layer in an end of a discharge passage of the nozzle by sucking back the processing liquid in the discharge passage of the nozzle; a first liquid layer forming step of forming a first contamination prevention liquid layer in the discharge passage of the nozzle by pulling a first contamination prevention liquid into the discharge passage of the nozzle from the outside by applying a suction force to the discharge passage of the nozzle, after the first gas layer forming step; a second gas layer forming step of forming a second gas layer in the discharge passage of the nozzle by applying a suction force to the passage of the nozzle, after the first liquid layer forming step; and a second liquid layer forming step of forming a second contamination prevention liquid layer in the discharge passage of the nozzle by pulling a second contamination prevention liquid into the discharge passage of the nozzle from the outside by applying a suction force to the discharge passage of the nozzle, after the second gas layer forming step. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. An apparatus for processing a substrate, the apparatus comprising:
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a cup having a processing space therein, in which the substrate is processed; a support unit configured to support the substrate in the processing space; a liquid dispensing unit including a nozzle configured to dispense a processing liquid onto the substrate supported on the support unit; a home port configured to store the nozzle while the nozzle does not dispense the processing liquid onto the substrate; and a controller configured to control the liquid dispensing unit, wherein the liquid dispensing unit includes; the nozzle having a discharge passage formed therein; a liquid supply tube configured to supply the processing liquid into the nozzle; and a suck-back valve installed on the liquid supply tube and configured to apply a suction force to the discharge passage, wherein the controller controls the suck-back valve to apply the suction force to the discharge passage of the nozzle to sequentially form a first gas layer, a first contamination prevention liquid layer, a second gas layer, and a second contamination prevention liquid layer in the nozzle while the nozzle is stored in the home port, and wherein the first gas layer is located adjacent to the processing liquid. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification