Patent ID: 11862491
Assignee: SEMES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 17:
18. An apparatus for treating a substrate, the apparatus comprising:
a light treatment chamber having an interior space;
a support unit configured to support the substrate in the interior space; and
an irradiation unit disposed above the support unit and configured to irradiate light downward to the substrate in the interior space to remove organic matter remaining on the substrate,
wherein the irradiation unit includes:
a first light source configured to irradiate first light to the substrate;
a second light source configured to irradiate second light to the substrate, the second light having a different wavelength range from the first light; and
a reflector configured to reflect the light irradiated by the irradiation unit toward a surface of the substrate supported on the support unit, wherein
the first light source is disposed at a different height from the second light source,
the reflector has a cylindrical shape, and
the reflector surrounds the first light source and the second light source.