(19)
(11) EP 3 858 114 A1

(12)

(43) Date of publication:
04.08.2021 Bulletin 2021/31

(21) Application number: 19784184.4

(22) Date of filing: 25.09.2019
(51) International Patent Classification (IPC): 
H05G 2/00(2006.01)
(86) International application number:
PCT/US2019/052985
(87) International publication number:
WO 2020/069001 (02.04.2020 Gazette 2020/14)
(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 MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 26.09.2018 US 201862736651 P
17.09.2019 US 201962901340 P

(71) Applicant: ASML Netherlands B.V.
5500 AH Veldhoven (NL)

(72) Inventors:
  • TREES, Dietmar, Uwe, Herbert
    San Diego, California 92127 (US)
  • MUSHI, Simon, Romeo, Estomih
    San Diego, California 92127 (US)
  • SAMS, Benjamin, Andrew
    San Diego, California 92127 (US)
  • MEDINA OSEGUERA, Alfonso
    San Diego, California 92127 (US)
  • DRIESSEN, Theodorus, Wilhelmus
    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) APPARATUS FOR AND METHOD OF CONTROLLING INTRODUCTION OF EUV TARGET MATERIAL INTO AN EUV CHAMBER