Patent ID: 7299810

Claim:
A substrate treating apparatus for removing an organic substrate from a substrate by using a removal liquid capable of removing organic substances, said apparatus comprising: substrate support means for supporting the substrate to be rotatable in a plane including a principal surface of the substrate; drive means being controlled to rotate said substrate support means at a rotational frequency of at least 100 rpm; removal liquid supply means being controlled to supply the removal liquid at a rate of at least 50 ml per minute to the substrate while the substrate is supported and rotated at said at least 100 rpm_by said substrate support means; and removal liquid heating means for heating the removal liquid to be supplied to the substrate by said removal liquid supply means; whereby, due to said rotational frequency and said supply rate, the substrate is sufficiently heated by the heated removal liquid so that the removal liquid does not substantially cool while on the substrate; said removal liquid heating means comprising a circulating and heating mechanism for heating the removal liquid up to a temperature range of 50 to 80 degrees centigrade while circulating the removal liquid; flow control means in said circulating and heating mechanism; wherein said removal liquid circulating and heating mechanism includes a common supply line extending between a removal liquid reservoir and a nozzle, a first circulation line branching from a first branch point on the common supply line and extending to the removal liquid reservoir, and a second circulation line branching from a second branch point on the common supply line and extending to the removal liquid reservoir; wherein the removal liquid supply means supplies the removal liquid to the substrate while circulating the removal liquid in the first and second circulation lines.