Source: https://patents.google.com/patent/US20070081136A1/en
Timestamp: 2019-03-23 01:03:47
Document Index: 5064880

Matched Legal Cases: ['art 7', 'art 7', 'art 7', 'art 7', 'art 7', 'art 7', 'art 7']

US20070081136A1 - Exposure apparatus and device fabrication method - Google Patents
US20070081136A1
US20070081136A1 US11/635,607 US63560706A US2007081136A1 US 20070081136 A1 US20070081136 A1 US 20070081136A1 US 63560706 A US63560706 A US 63560706A US 2007081136 A1 US2007081136 A1 US 2007081136A1
US11/635,607
US8169590B2 (en
2006-12-08 Application filed by Nikon Corp filed Critical Nikon Corp
2006-12-08 Priority to US11/635,607 priority patent/US8169590B2/en
2007-04-12 Publication of US20070081136A1 publication Critical patent/US20070081136A1/en
2012-05-01 Publication of US8169590B2 publication Critical patent/US8169590B2/en
In addition, in the present embodiment, the nozzle position measuring instrument 80 has one Y interferometer 82. Specifically, the nozzle position measuring instrument 80 has the Y interferometer 82A provided on the inner side surface 7B on the −Y side of the recessed part 7H of the lower side step part 7. In addition, a reflecting surface 85A is,provided at a position opposing the Y interferometer 82A on the side surface on the −Y side of the nozzle member 70. Based on the measurement result of the Y interferometer 82A, the control apparatus CONT can derive the position of the nozzle member 70 in the Y axial direction with respect to the lower side step part 7.
When the nozzle member 70 vibrates, the position of the nozzle member 70 with respect to the lower side step part 7 of the main column 1 fluctuates, and the control apparatus CONT therefore drives the drive apparatuses 61-63 of the vibration isolating mechanism 60 based on the measurement results of the nozzle position measuring instrument 80. The nozzle position measuring instrunent 80 measures the position of the nozzle member 70 with respect to the lower side step part 7. Based on the measurement result of the nozzle position measuring instrument 80, the control apparatus CONT drives the drive apparatuses 61-63 of the vibration isolating mechanism 60 so that the position of the nozzle member 70 with respect to the lower side step part 7 is maintained in a desired state, i.e., so that the positional relationship between the lower side step part 7 and the nozzle member 70 is fixedly maintained.
FIG. 5 depicts another embodiment of the present invention. In FIG. 5, the exposure apparatus EX has a nozzle position measuring instrument 110 that measures the positional relationship between the substrate stage PST and the nozzle member 70. The nozzle position measuring instrument 110 has: X interferometers 111(111A, 111B) that measure the positional relationship between the substrate stage PST and the nozzle member 70 in the X axial direction; a Y interferometer 112 (however, not depicted in FIG. 5) that measures the positional relationship between the substrate stage PST and the nozzle member 70 in the Y axial direction; and Z interferometers 113 (113A-113C) (however, 113C is not depicted in FIG. 5) that measures the positional relationship between the substrate stage PST and the nozzle member 70 in the Z axial direction. Each of these interferometers 111-113 is affixed at a prescribed position to the substrate stage PST so that it does not interfere with the exposure process. In FIG. 5, each of the interferometers 111-113 is affixed to the side surface of the substrate stage PST. Each of the interferometers 111-113 is connected to the control apparatus CONT, and the measurement result of each of the interferometers 111-113 is outputted to the control apparatus CONT.
In addition, the present invention is also applicable to an exposure apparatus having an exposure stage capable of holding and moving a substrate to be processed, such as a wafer, and a measurement stage having various measuring members and sensors, as disclosed in Japanese Published Patent Application No. H11-135400. The disclosure of the abovementioned publication and the corresponding U.S. patent are hereby incorporated by reference in. their entirety to the extent permitted by the national laws and regulations of the designated states (or elected states) designated by the present international patent application.
7. The apparatus according to claim 1, wherein the liquid supply system member compensator is coupled to a frame supporting at least a part of the projection system, the frame being capable of supporting via the coupling at least part of the reaction to the force applied by the liquid supply system member compensator to the liquid supply system member.
9. The apparatus according to claim 1, wherein the liquid supply system member compensator operates by means of at least one mechanism selected from the following list: an electromagnetic force, a bellows, and a mechanical spring.
a liquid supply system member compensator configured to compensate for a force exerted by one of the liquid supply system member and the substrate table toward the other.
11. The apparatus according to claim 10, further comprising a liquid supply system member compensator controller and a liquid supply system member position determining device, the liquid supply system member compensator controller configured to apply a force to the liquid supply system member based on a position of the liquid supply system member as measured by the liquid supply system member position determining device.
12. The apparatus according to claim 10, further comprising a liquid supply system member compensator controller configured to apply a control force to the liquid supply system member according to data representing the magnitude of the force applied by one of the liquid supply system member and the substrate table toward the other.
13. The apparatus according to claim 10, comprising a liquid supply system member compensation device configured to apply a force to the liquid supply system member to at least partially compensate for the force exerted by one of the liquid supply system member and the substrate table toward the other and coupled to a frame that is substantially mechanically isolated from the projection system, the isolated frame capable of supporting via the coupling at least part of the reaction to the force applied by the liquid supply system member compensation device to the liquid supply system member.
15. The method according to claim 14, comprising compensating a relative position of the substrate and a plane of best focus of the lithographic apparatus according to compensation data.
16. The method according to claim 15, wherein the compensation data is derived from determining a surface height, a surface tilt, or both of the substrate table, the surface height being defined in a direction substantially parallel to the optical axis of a final element of the projection system and the surface tilt being defined with respect to one or two orthogonal axes of a plane substantially perpendicular to the optical axis of the final element of the projection system.
17. The method according to claim 15, comprising applying a force to the liquid supply system member to at least partially compensate for the interaction between the liquid supply system member and the substrate table.
18. The method according to claim 17, wherein the isolated frame supports, via the coupling, at least part of the reaction to the force applied by the liquid supply system member compensator to the liquid supply system member
19. The method according to claim 17, comprising applying a control force to the liquid supply system member based on a position of the liquid supply system member.
20. The method according to claim 19, comprising determining a position of the liquid supply system member, relative to the projection system, a frame supporting at least a part of the projection system or the frame substantially mechanically isolated from the projection system, in a direction substantially parallel to the optical axis of the projection system, determining a position of the liquid supply system member in a direction substantially perpendicular to the optical axis of the projection system, or both.
US11/635,607 2004-03-25 2006-12-08 Exposure apparatus and device fabrication method Active 2026-07-02 US8169590B2 (en)
US20070081136A1 true US20070081136A1 (en) 2007-04-12
US8169590B2 US8169590B2 (en) 2012-05-01
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