Source: https://patents.google.com/patent/US8896807B2/en
Timestamp: 2019-07-23 09:51:55
Document Index: 778411608

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'art 30', 'art 32', 'art 30', 'art 32', 'art 30', 'art 32', 'Application No. 100146764', 'Application No. 2004800238885', 'Application No. 2011', 'Application No. 200810092257', 'Application No. 05741209', 'Application No. 2006', 'Application No. 2012', 'Application No. 2008', 'Application No. 093126654', 'Application No. 05741209', 'Application No. 04778426', 'Application No. 2006', 'Application No. 2010', 'Application No. 04778426', 'Application No. 2013', 'Application No. 2008']

US8896807B2 - Apparatus and method for providing fluid for immersion lithography - Google Patents
Apparatus and method for providing fluid for immersion lithography Download PDF
US8896807B2
US8896807B2 US13/944,281 US201313944281A US8896807B2 US 8896807 B2 US8896807 B2 US 8896807B2 US 201313944281 A US201313944281 A US 201313944281A US 8896807 B2 US8896807 B2 US 8896807B2
US13/944,281
US20130301015A1 (en
2003-09-03 Priority to US50031203P priority Critical
2004-02-02 Priority to US54132904P priority
2004-07-16 Priority to PCT/US2004/022915 priority patent/WO2005024517A2/en
2006-02-28 Priority to US11/362,833 priority patent/US7292313B2/en
2007-04-24 Priority to US11/790,233 priority patent/US20070195303A1/en
2009-08-05 Priority to US12/461,243 priority patent/US8520187B2/en
2013-07-17 Priority to US13/944,281 priority patent/US8896807B2/en
2013-07-17 Application filed by Nikon Corp filed Critical Nikon Corp
2013-11-14 Publication of US20130301015A1 publication Critical patent/US20130301015A1/en
2014-11-25 Publication of US8896807B2 publication Critical patent/US8896807B2/en
A liquid immersion lithography apparatus includes a projection system having a final optical element via which a substrate is exposed to an exposure beam through an immersion liquid located between the final optical element and the substrate, and a nozzle member. The nozzle member has a first opening on one side of the final optical element and from which the immersion liquid is supplied, a second opening on a second side of the final optical element and from which the immersion liquid is collected, and a liquid recovery portion that surrounds a path of the exposure beam and from which the immersion liquid is collected. During exposure, an upper surface of the substrate faces the liquid recovery portion, and the immersion liquid is supplied from the first opening while the immersion liquid supplied from the first opening is recovered from the second opening and the liquid recovery portion.
This is a divisional of U.S. patent application Ser. No. 12/461,243 filed Aug. 5, 2009 (now U.S. Pat. No. 8,520,187), which in turn is a continuation of U.S. patent application Ser. No. 11/790,233 filed Apr. 24, 2007 (now abandoned), which is a divisional of U.S. patent application Ser. No. 11/362,833 filed Feb. 28, 2006 (now U.S. Pat. No. 7,292,313), which is a continuation of International Application No. PCT/US2004/022915 filed Jul. 16, 2004, which claims the benefit of U.S. Provisional Patent Application No. 60/500,312 filed Sep. 3, 2003, and U.S. Provisional Patent Application No. 60/541,329 filed Feb. 2, 2004. The disclosures of these applications are incorporated herein by reference in their entireties.
The outer part 30 is spaced from the inner part 32 by an intermediate spacing or groove 48, which may be referred to as an atmospheric groove. The outer part 30 includes one or more fluid recovery openings 50 disposed on opposite sides of the final optical element 22. A porous member 51 is disposed in a slot or outer cavity 53 that extends around the inner part 32 and fluidicly communicates with the pair of fluid recovery openings 50. The porous member 51 may be a mesh or may be formed of a porous material having holes typically in the size range of about 50-200 microns. For example, the porous member 51 may be a wire mesh including woven pieces or layers of material made of metal, plastic, or the like, a porous metal, a porous glass, a porous plastic, a porous ceramic, or a sheet of material having chemically etched holes (e.g., by photo-etching). The porous member 51 is desirably hydrophilic. The outer part 30 further includes a fluid buffer outlet 56 and a fluid recovery outlet 58. In another embodiment of the nozzle 20′ as seen in FIG. 5, the inner part 32 does not contact or form a seal with the final optical element 22, but is spaced from the final optical element 22. The gap prevents nozzle vibrations from being transmitted to the final optical element 22. However, the gap may allow the fluid to be exposed to air.
Also, the present invention could be applied to Twin-Stage-Type Lithography Systems. Twin-Stage-Type Lithography Systems, for example, are disclosed in U.S. Pat. No. 6,262,796 and U.S. Pat. No. 6,341,007, the disclosures of which are incorporated herein by reference in their entireties.
a projection system having a final optical element via which a substrate is exposed to an exposure beam through an immersion liquid located between the final optical element and the substrate; and
a nozzle member having:
an undersurface that surrounds a path of the exposure beam;
a first opening disposed on one side of the final optical element and from which the immersion liquid is supplied;
a second opening disposed on a second side of the final optical element and from which the immersion liquid is collected; and
a liquid recovery portion disposed such that the liquid recovery portion surrounds the path of the exposure beam and from which the immersion liquid is collected, wherein
the nozzle member is spaced from the final optical element,
the first and second openings of the nozzle member are located higher than the undersurface of the nozzle member,
during the exposure, an upper surface of the substrate faces the liquid recovery portion,
during the exposure, the immersion liquid is supplied from the first opening while the immersion liquid supplied from the first opening is recovered from the second opening and the liquid recovery portion, and
the liquid recovered through the second opening is not collected through the liquid recovery portion.
2. The apparatus of claim 1, wherein the first and second openings are located at a same height.
3. The apparatus of claim 1, wherein the nozzle member has a recess arranged such that the recess is surrounded by the undersurface.
4. The apparatus of claim 3, wherein the undersurface is located between the recess and the recovery portion.
5. The apparatus of claim 1, wherein the liquid recovery portion is arranged such that the liquid recovery portion surrounds the undersurface.
6. The apparatus of claim 1, wherein the undersurface and the liquid recovery portion are disposed such that the upper surface of the substrate faces the undersurface and the liquid recovery portion during the exposure.
7. The apparatus of claim 1, wherein the immersion liquid is supplied from the first opening and the immersion liquid is recovered from the second opening such that the immersion liquid flows across the final optical element.
8. The apparatus of claim 7, wherein temperature rise of the immersion liquid is prevented.
9. The apparatus of claim 1, wherein the liquid recovery portion includes a downward-facing inlet opening that opposes the upper surface of the substrate and through which the immersion liquid is recovered during the exposure.
10. A liquid immersion lithography method comprising:
exposing a substrate to an exposure beam by projecting the exposure beam through a projection system and an immersion liquid onto the substrate, the immersion liquid being located in a space between a final optical element of the projection system and the substrate; and
supplying the immersion liquid to the space, and recovering the immersion liquid from the space, via a nozzle member having: (i) an undersurface that surrounds a path of the exposure beam, (ii) a first opening disposed on one side of the final optical element and from which the immersion liquid is supplied, (iii) a second opening disposed on a second side of the final optical element and from which the immersion liquid is collected, and (iv) a liquid recovery portion disposed such that the liquid recovery portion surrounds the path of the exposure beam and from which the immersion liquid is collected, wherein
11. The method of claim 10, wherein the first and second openings are located at a same height.
12. The method of claim 10, wherein the nozzle member has a recess arranged such that the recess is surrounded by the undersurface.
13. The method of claim 12, wherein the undersurface is located between the recess and the recovery portion.
14. The method of claim 10, wherein the liquid recovery portion is arranged such that the liquid recovery portion surrounds the undersurface.
15. The method of claim 10, wherein the undersurface and the liquid recovery portion are disposed such that the upper surface of the substrate faces the undersurface and the liquid recovery portion during the exposure.
16. The method of claim 10, wherein the immersion liquid is supplied from the first opening and the immersion liquid is recovered from the second opening such that the immersion liquid flows across the final optical element.
17. The method of claim 16, further comprising preventing temperature rise of the immersion liquid.
18. The method of claim 10, wherein the liquid recovery portion includes a downward-facing inlet opening that opposes the upper surface of the substrate and through which the immersion liquid is recovered during the exposure.
US13/944,281 2003-09-03 2013-07-17 Apparatus and method for providing fluid for immersion lithography Active US8896807B2 (en)
US50031203P true 2003-09-03 2003-09-03
US54132904P true 2004-02-02 2004-02-02
PCT/US2004/022915 WO2005024517A2 (en) 2003-09-03 2004-07-16 Apparatus and method for providing fluid for immersion lithography
US11/362,833 US7292313B2 (en) 2003-09-03 2006-02-28 Apparatus and method for providing fluid for immersion lithography
US11/790,233 US20070195303A1 (en) 2003-09-03 2007-04-24 Apparatus and method for providing fluid for immersion lithography
US12/461,243 US8520187B2 (en) 2003-09-03 2009-08-05 Apparatus and method for providing fluid for immersion lithography
US13/944,281 US8896807B2 (en) 2003-09-03 2013-07-17 Apparatus and method for providing fluid for immersion lithography
US14/519,573 US9547243B2 (en) 2003-09-03 2014-10-21 Apparatus and method for providing fluid for immersion lithography
US15/394,016 US9817319B2 (en) 2003-09-03 2016-12-29 Apparatus and method for providing fluid for immersion lithography
US15/786,758 US10203610B2 (en) 2003-09-03 2017-10-18 Apparatus and method for providing fluid for immersion lithography
US16/238,887 US20190137888A1 (en) 2003-09-03 2019-01-03 Apparatus and method for providing fluid for immersion lithography
US12/461,243 Division US8520187B2 (en) 2003-09-03 2009-08-05 Apparatus and method for providing fluid for immersion lithography
US14/519,573 Division US9547243B2 (en) 2003-09-03 2014-10-21 Apparatus and method for providing fluid for immersion lithography
US20130301015A1 US20130301015A1 (en) 2013-11-14
US8896807B2 true US8896807B2 (en) 2014-11-25
ID=34278701
US11/362,833 Active US7292313B2 (en) 2003-09-03 2006-02-28 Apparatus and method for providing fluid for immersion lithography
US11/790,233 Abandoned US20070195303A1 (en) 2003-09-03 2007-04-24 Apparatus and method for providing fluid for immersion lithography
US12/461,243 Active 2024-10-27 US8520187B2 (en) 2003-09-03 2009-08-05 Apparatus and method for providing fluid for immersion lithography
US13/944,281 Active US8896807B2 (en) 2003-09-03 2013-07-17 Apparatus and method for providing fluid for immersion lithography
US14/519,573 Active 2024-12-28 US9547243B2 (en) 2003-09-03 2014-10-21 Apparatus and method for providing fluid for immersion lithography
US15/394,016 Active US9817319B2 (en) 2003-09-03 2016-12-29 Apparatus and method for providing fluid for immersion lithography
US15/786,758 Active US10203610B2 (en) 2003-09-03 2017-10-18 Apparatus and method for providing fluid for immersion lithography
US16/238,887 Pending US20190137888A1 (en) 2003-09-03 2019-01-03 Apparatus and method for providing fluid for immersion lithography
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