Patent ID: 9165800
Filing Date: 2015-10-20
Classification: H01L

Abstract:
1. A liquid processing apparatus comprising: a holding part configured to hold a substrate; a rotation driving part configured to rotate the substrate held by the holding part; a chemical liquid supply mechanism configured to supply a chemical liquid toward a holding part-side surface of the substrate; a rinsing liquid supply mechanism including a liquid supply pipe and configured to supply a rinsing liquid toward the holding part-side surface of the substrate; a gas supply part including a gas supply pipe provided in parallel with and separately from the liquid supply pipe and configured to supply gas toward the holding part-side surface of the substrate; a lift pin plate including a lift pin provided within a hollow of the holding part to have a shape increasingly being widened toward an upper direction and configured to move the substrate in an up and down direction during a loading/unloading process, and the liquid supply pipe and the gas supply pipe are provided within the lift pin plate such that an opening for each of the liquid supply pipe and the gas supply pipe is formed on a bottom surface of the lift pin plate; and a control device configured to control an overall operation of the rotation driving part, the chemical liquid supply mechanism, the rinsing liquid supply mechanism, and the gas supply part such that the rotation driving part rotates the substrate held by the holding part, the chemical liquid supply mechanism supplies the chemical liquid toward the holding part-side surface of the substrate, and after supplying the chemical liquid, rinsing liquid droplets are generated within the lift pin plate and scattered toward an outer circumferential periphery of the holding part between the holding part and the substrate to clean the holding part in all directions by supplying the gas toward the holding part-side surface of the substrate through the gas supply part and supplying the rinsing liquid toward the holding part-side surface of the substrate through the rinsing liquid supply mechanism, and after scattering the rinsing liquid droplets, the gas supply part stops the supplying of the gas, the rinsing liquid supply mechanism additionally supplies the rinsing liquid to the holding part-side surface of the substrate, and the substrate is rotated and dried by the rotation driving part.