Patent ID: 8574674
Filing Date: 2013-11-05
Classification: G03F,H01L

Abstract:
1. A substrate coating treatment method, comprising: a first step of rotating a substrate at a first rotation speed and applying a coating solution to the rotated substrate; a second step of decelerating the rotation of the substrate to a second rotation speed lower than the first rotation speed to rotate the substrate at the low speed; a third step of accelerating the rotation of the substrate to a third rotation speed higher than the second rotation speed, the third step comprising maintaining the rotation of the substrate at said third rotation speed for a predetermined time period and supplying a solvent for the coating solution and/or a dry gas to the coating solution on the substrate; and a fourth step of accelerating the rotation of the substrate to a fourth rotation speed higher than the third rotation speed to dry the coating solution on the substrate, wherein in said third step, the solvent for the coating solution is supplied to a portion of the coating solution on the substrate thicker than a set thickness determined in advance, and the dry gas is supplied to a portion of the coating solution on the substrate thinner than the set thickness.