Patent ID: 7491913
Filing Date: 2009-02-17
Classification: G03F,H01L

Abstract:
1. Bake apparatus for use in baking a substrate, comprising: a chamber; a hot plate disposed within the chamber; an air injection passageway communicating with the interior of the chamber such that gas can be injected therethrough into the chamber; an air exhaust opening communicating with the interior of the chamber at an upper part thereof and through which gas is exhausted from the chamber to the outside; and a first buffer plate disposed within the chamber at the upper part thereof as interposed between the hot plate and the location at which the exhaust opening communicates with the interior of the chamber, the first buffer plate having a plurality of discharge holes therethrough such that gas within the chamber is exhausted through the exhaust opening via the discharge holes, and respective ones of the discharge holes lying along each of a series of concentric circles whose centers coincide at a central portion of the buffer plate.