Patent ID: 11872605
Assignee: SCREEN HOLDINGS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 0:
1. A substrate processing method comprising:
a processing liquid supplying step of supplying a processing liquid toward a surface of a substrate;
a processing film forming step in which the processing liquid supplied to the surface of the substrate is solidified or cured to form, on the surface of the substrate, a processing film which holds a removal object present on the surface of the substrate;
a peeling removal step in which a peeling liquid is supplied toward the front surface of the substrate, to partially dissolve the processing film in the peeling liquid, to peel the processing film in a state of holding the removal object from the front surface of the substrate and to remove the peeled processing film outside the substrate; and
a residue removing step in which, after the peeling removal step, a residue removing liquid is supplied toward the surface of the substrate to remove a residue of the processing film remaining on the surface of the substrate; wherein
the peeling liquid is a liquid mixture of water and an organic solvent,
the residue removing liquid is an organic solvent composed of the same substance as the organic solvent in the liquid mixture,
the organic solvent is IPA,
a mass percent concentration of IPA in the liquid mixture is not less than 12% and not more than 33%, and
a contact angle of pure water associated with the peeling liquid comprising the IPA for the surface of the substrate is smaller than 41.7°.