Patent ID: 11869763
Assignee: SEMES CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. An apparatus for treating a substrate, the apparatus comprising:
a chamber defining an inner space;
a support unit received in the inner space and configured to support and rotate the substrate;
a first laser irradiation unit configured to perform an edge bead removal (EBR) process by firing a first laser beam having a first wavelength to remove an exposed upper first layer of an organic film on an upper surface of the substrate that is supported on the support unit; and
a second laser irradiation unit configured to perform the EBR process by firing a second laser beam having a second wavelength, different than the first wavelength, to remove a second layer of the organic film on the upper surface of the substrate that is supported on the support unit,
wherein the first and second wavelengths are between 150 nm and 380 nm.