Patent ID: 7537401
Filing Date: 2009-05-26
Classification: G03F,H01L

Abstract:
1. A photo apparatus comprising: a loading/unloading unit which loads or unloads a substrate; a coating line which coats photoresist on the substrate; an exposure line which exposes the photoresist coated on the substrate; a development line which develops the exposed substrate; and a transferring line which temporarily stores the substrate coated with the photoresist and loads the same to the exposure line, and temporarily stores the exposed substrate and loads the same to the development line; wherein the transferring line comprises a first conveyor which conveys the substrate coated by the coating line, a second conveyor which conveys the exposed substrate to the development line, a stacker which temporarily stores the coated substrate conveyed by the first conveyor, and temporarily stores the substrate exposed by the exposure line, and a transferring unit which transfers the substrate between the first and second conveyors and the stacker, wherein the transferring unit is moved alone a predetermined path between the first conveyor and the stacker, the transferring unit stores the cassette, in which the plurality of substrates are accommodated, in the stacker, wherein the transferring unit is moved along a predetermined path between the second conveyor and the stacker, the transferring unit supplies the cassette, which accommodates the plurality of substrates exposed in the stacker, to the second conveyor.