Patent ID: 7008480
Filing Date: 2006-03-07
Classification: B05C,G03F,H01L

Abstract:
1. An apparatus for coating photoresist on a surface of a substrate during a semiconductor device manufacturing process, the apparatus comprising: a vacuum chuck capable of holding a substrate thereon by using vacuum; a driving motor connected to the vacuum chuck through an arm in order to supply rotational driving force to the substrate; a first nozzle installed above the vacuum chuck in order to coat photoresist onto the substrate; a second nozzle installed below the vacuum chuck in order to perform a rinse process with respect to a rear surface of the substrate; a bath surrounding the vacuum chick including the substrate in order to prevent photoresist from being discharged to an exterior; a first drain pipe connected to both lower ends of the bath in order to discharge photoresist contained in the bath; a vane, coupled to said arm, forcing air in said bath toward said first drain pipe; and a photoresist discharge section coupled to said first drain pipe to temporarily store photoresist introduced into the bath.