Patent ID: 11919051
Assignee: SCREEN HOLDINGS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 18:
19. A substrate cleaning method comprising:
a) supplying a processing solution containing solvent and solute, onto a top of substrate; and
b) supplying a removal liquid onto said substrate,
wherein said solvent has volatility,
in said operation a), said processing solution transforms into a particle retention layer as a result of at least part of the solvent being volatilized from said processing solution supplied onto said substrate and causing said processing solution to solidify or harden,
a solute component that is said solute contained in said particle retention layer or that is derived from said solute is insoluble or poorly soluble in said removal liquid, and said solvent is soluble in said removal liquid, and
in said operation b) after said operation a), said particle retention layer is divided into fine pieces by a physical force received from said removal liquid while said particle retention layer is removed from above the entire top of said substrate.