公开(公告)号：US20210165334A1

公开(公告)日：2021-06-03

申请号：US16770464

申请日：2018-11-22

Applicant: ASML NETHERLANDS B.V. ,  ASML HOLDING N.V.

Inventor： Thomas POIESZ ,  Coen Hubertus Matheus BALTIS ,  Abraham Alexander SOETHOUDT ,  Mehmet Ali AKBAS ,  Dennis VAN DEN BERG ,  Wouter VANESCH ,  Marcel Maria Cornelius Franciscus TEUNISSEN

IPC: G03F7/20 ,  H01L21/687

Abstract: A substrate holder, for a lithographic apparatus, having a main body, a plurality of support elements to support a substrate and a seal unit. The seal unit may include a first seal positioned outward of and surrounding the plurality of support elements. A position of a substrate contact region of an upper surface of the first seal may be arranged at a distance from the plurality of support elements sufficient enough such that during the loading/unloading of the substrate, a force applied to the first seal by the substrate is greater than a force applied to the plurality of support elements by the substrate. A profile of the contact region, in a cross section through the seal, may have a shape which is configured such that during the loading/unloading of the substrate, the substrate contacts the seal via at least two different points of the profile.

公开(公告)号：US20220357675A1

公开(公告)日：2022-11-10

申请号：US17870444

申请日：2022-07-21

Applicant: ASML NETHERLANDS B.V. ,  ASML HOLDING N.V.

Inventor： Thomas POIESZ ,  Coen Hubertus Matheus BALTIS ,  Abraham Alexander SOETHOUDT ,  Mehmet Ali AKBAS ,  Dennis VAN DEN BERG ,  Wouter VANESCH ,  Marcel Maria Cornelius Franciscus TEUNISSEN

IPC: G03F7/20 ,  H01L21/687

Abstract: A substrate holder, for a lithographic apparatus, having a main body, a plurality of support elements to support a substrate and a seal unit. The seal unit may include a first seal positioned outward of and surrounding the plurality of support elements. A position of a substrate contact region of an upper surface of the first seal may be arranged at a distance from the plurality of support elements sufficient enough such that during the loading/unloading of the substrate, a force applied to the first seal by the substrate is greater than a force applied to the plurality of support elements by the substrate. A profile of the contact region, in a cross section through the seal, may have a shape which is configured such that during the loading/unloading of the substrate, the substrate contacts the seal via at least two different points of the profile.