Patent ID: 11960213
Assignee: ASML NETHERLANDS B.V.
Field: Optics (Instruments)
Classification: CPC G  B  Y | IPC B  G

Claim 14:
15. A substrate holder for use in a lithographic apparatus, the substrate holder comprising:
a main body having a first side of the main body and a second side of the main body opposite to the first side;
a plurality of first burls at the first side of the main body and having end surfaces to support a substrate; and
a plurality of second burls at the second side of the main body,
wherein (1) the main body has a thickness in a range of 1 mm to 50 mm, (2) each of the first burls and/or second burls has a height in a range of about 5 μm to about 250 μm, and/or (3) a total area of all the burls on one side of the main body is less than 3% of the total surface area of the main body, and wherein the main body is grounded.