(19)
(11) EP 4 453 657 A1

(12)

(43) Date of publication:
30.10.2024 Bulletin 2024/44

(21) Application number: 22831016.5

(22) Date of filing: 17.11.2022
(51) International Patent Classification (IPC): 
G03F 7/20(2006.01)
(52) Cooperative Patent Classification (CPC):
G03F 7/70525; G03F 7/70008; G03F 7/70533
(86) International application number:
PCT/US2022/050261
(87) International publication number:
WO 2023/121798 (29.06.2023 Gazette 2023/26)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 23.12.2021 US 202163293453 P

(71) Applicant: Cymer, LLC
San Diego, CA 92127 (US)

(72) Inventors:
  • WELLS, Nathan, Gibson
    San Diego, California 92127 (US)
  • STEVENS, Christopher, James
    San Diego, California 92127 (US)
  • MYSORE NAGARAJ, Deepthi
    San Diego, California 92127 (US)

(74) Representative: ASML Netherlands B.V. 
Corporate Intellectual Property P.O. Box 324
5500 AH Veldhoven
5500 AH Veldhoven (NL)

   


(54) MAINTENANCE OF MODULES FOR LIGHT SOURCES IN SEMICONDUCTOR PHOTOLITHOGRAPHY