Patent 11048179 was granted and assigned to Samsung on June, 2021 by the United States Patent and Trademark Office.
An apparatus for removing residues from a source vessel in an extreme ultraviolet lithography device, the apparatus including a frame portion, and a heater structure on the frame portion, the heater structure having a head on the frame portion, the head being rotatable in at least one shaft direction, and a heater on the head to dissipate heat toward residues in the source vessel, the heater to apply temperature of 200° C. to 800° C.