Patent ID: 11923213
Assignee: SEMES CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC H  B  G | IPC B  G  H

Claim 11:
12. A substrate processing apparatus comprising:
a substrate support unit configured to support a substrate and provided with an exposure opening through which a lower surface of the supported substrate is exposed; and
a substrate heating unit configured to heat the substrate supported by the substrate support unit,
wherein the substrate heating unit comprises:
a laser generator configured to generate a first laser beam which is directed toward a substrate; and
a beam shaper configured to shape an energy distribution of the first laser beam received from the laser generator to selectively provide the substrate with a second laser beam having one of a uniform energy distribution over the substrate and an edge-enhanced energy distribution in which a first portion of the second laser beam is directed toward an edge portion of the substrate, and a second portion of the second laser beam is directed toward a central portion of the substrate,
wherein the first portion of the second laser beam has an energy intensity higher than an energy intensity of the second portion of the second laser beam, and
wherein the second laser beam irradiates on the lower surface of the substrate through the exposure opening of the substrate support unit.