Patent ID: 8491299
Filing Date: 2013-07-23
Classification: G02F

Abstract:
1. A seal hardening furnace comprising: a cassette including rack bars for supporting a substrate and having discharge openings therein, a first rack bar support for supporting the rack bars in an X axis direction, an injecting passage connected to the first rack bar support, and a supply unit for supplying air injected through the injecting passage to the first rack support, wherein a plurality of the discharge openings is uniformly distributed in an upper surface of the rack bar corresponding to the substrate; and a heating unit for heating the substrate, wherein air supplied by the supply unit passes through the injecting passage, the first rack bar support and the rack bars in sequence, to thereafter be sprayed out through the discharge openings to lift the substrate from the rack bars by the sprayed air while a seal hardening process is carried out so that the rack bar and the substrate are prevented from being contact therewith only.