Patent ID: 11935736
Assignee: TOKYO ELECTRON LIMITED
Field: Chemical engineering (Chemistry)
Classification: CPC H  B  F | IPC B  F  H

Claim 12:
13. A substrate processing method for removing liquid on a substrate having an uneven pattern formed on a surface of the substrate and drying the substrate, the substrate processing method comprising:
forming a laminate having a two-layer structure including a first material in a solid state forming a lower layer and a second material in a solid state forming an upper layer, in a concave portion of the pattern;
removing the second material from the concave portion by performing any one of a first heating process, a first reaction process using a first gas, and a first light-emitting process, wherein said first heating process uses sublimation to remove the second material, wherein said first reaction process uses a gas reaction to remove the second material, and wherein said first light-emitting process uses decomposition to remove the second material; and
removing the first material from the concave portion by performing any one of a second heating process, a second reaction process using a second gas, and a second light-emitting process, wherein said second heating process uses sublimation to remove the first material, wherein said second reaction process uses a gas reaction to remove the first material, and wherein said second light-emitting process uses decomposition to remove the first material,
wherein the forming the laminate in the concave portion includes:
supplying a solution containing the first material, the second material, and a solvent so as to fill the pattern with the solution;
separating the solution into a first solution containing the first material of the lower layer and a second solution containing the second material of the upper layer using a difference in specific gravity; and
after the separating of the solution, drying the solvent in the first solution and the second solution so as to form the laminate including the first material and the second material in the solid state.