| 摘要 |
The present invention relates to a switch spray nozzle. The switch spray nozzle may include: a valve unit which is supplied with a coating liquid from a chamber where the coating liquid is accommodated, and selectively discharges or returns the supplied coating liquid to the chamber; and a spraying unit which is connected to the valve unit, atomizes the coating liquid after receiving the coating liquid discharged from the valve unit, and sprays the coating liquid onto a substrate. Since the valve unit selectively delivers the coating liquid supplied from the chamber to the spraying unit or returns to chamber, the flux of the coating liquid supplied to the valve unit is constantly maintained while delivering the coating liquid to the spraying unit only when the switch spray nozzle is positioned within a valid area, therefore, the fine coating quality can be maintained and at the same time, the amount of coating liquid used can be decreased. |
