Source: http://www.google.com/patents/US7982857?dq=7,013,345/
Timestamp: 2017-09-22 12:53:54
Document Index: 685678341

Matched Legal Cases: ['arts 3', 'arts 3', 'arts 3', 'arts 11', 'arts 11', 'arts 11', 'arts 11', 'Application No. 200480037202', 'Application No. 2005', 'Application No. 2005', 'Application No. 200480037202', 'Application No. 04807061', 'Application No. 04807061', 'Application No. 2006', 'Application No. 04807061', 'Application No. 200480037202']

Patent US7982857 - Stage apparatus, exposure apparatus, and exposure method with recovery ... - Google Patents
A stage apparatus PST is provided with a holder PH, which has a substrate holding surface 33A that holds a substrate P; a stage 52, which supports and moves the holder PH; and a recovery apparatus 60, which is disposed in the vicinity of the holder PH and has lyophilic parts 3, 5 of which at least a...http://www.google.com/patents/US7982857?utm_source=gb-gplus-sharePatent US7982857 - Stage apparatus, exposure apparatus, and exposure method with recovery device having lyophilic portion
Publication number US7982857 B2
Application number US 10/582,268
PCT number PCT/JP2004/018702
Also published as CN1894773A, CN100487860C, DE602004030481D1, EP1699073A1, EP1699073A4, EP1699073B1, US20070109521, US20110080574, WO2005057636A1
Publication number 10582268, 582268, PCT/2004/18702, PCT/JP/2004/018702, PCT/JP/2004/18702, PCT/JP/4/018702, PCT/JP/4/18702, PCT/JP2004/018702, PCT/JP2004/18702, PCT/JP2004018702, PCT/JP200418702, PCT/JP4/018702, PCT/JP4/18702, PCT/JP4018702, PCT/JP418702, US 7982857 B2, US 7982857B2, US-B2-7982857, US7982857 B2, US7982857B2
Inventors Yasufumi Nishii, Kenichi Shiraishi, Hirotaka Kohno
Patent Citations (195), Non-Patent Citations (20), Referenced by (8), Classifications (5), Legal Events (2)
Stage apparatus, exposure apparatus, and exposure method with recovery device having lyophilic portion
US 7982857 B2
A stage apparatus PST is provided with a holder PH, which has a substrate holding surface 33A that holds a substrate P; a stage 52, which supports and moves the holder PH; and a recovery apparatus 60, which is disposed in the vicinity of the holder PH and has lyophilic parts 3, 5 of which at least a part of each is lyophilic, that uses the lyophilic parts 3, 5 to recover a liquid 1. As a result, the infiltration of liquid into the space between the substrate and the holder is prevented, even if performing an exposure treatment by filling the space between a projection optical system and the substrate with the liquid.
a member—that is disposed in a vicinity of the holder radially outward of an outer circumferential part of the substrate held by the holder, the member including a protruding portion that protrudes radially inward toward and opposes a side surface of the outer circumferential part of the substrate held on the holder such that a gap is provided between the protruding portion and the side surface of the outer circumferential part of the substrate held by the holder, the protruding portion having a downward facing lyophilic surface that faces downward and is disposed lower than the upper surface of the substrate held by the holder; and
23. An exposure method according to claim 19, wherein at least a part of the downward facing lyophilic surface is disposed higher than a lower surface of the substrate held on the holder.
To achieve the abovementioned objects, the present invention adopts the following constitution, corresponding to FIG. 1 through FIG. 9 that depict the embodiments of the present invention.
FIG. 1 is a schematic block diagram that depicts one embodiment of an exposure apparatus according to the present invention.
The following explains the embodiments of the stage apparatus and the exposure apparatus of the present invention, referencing FIG. 1 through FIG. 9. FIG. 1 is a schematic block diagram that depicts one embodiment of the exposure apparatus according to the present invention.
In FIG. 1, an exposure apparatus EX comprises: a mask stage MST that supports a mask M; a substrate stage PST that supports a substrate P; an illumination optical system IL that illuminates the mask M, which is supported by the mask stage MST, with an exposure light EL; a projection optical system PL that projects and exposes a pattern image of the mask M illuminated by the exposure light EL onto the substrate P supported by the substrate stage PST, which functions as the stage apparatus; and a control apparatus CONT that provides overall control of the operation of the entire exposure apparatus EX.
The present embodiment will now be explained as exemplified by a case of using a scanning type exposure apparatus (a so-called scanning stepper) as the exposure apparatus EX that exposes the substrate P with the pattern formed on the mask M while synchronously moving the mask M and the substrate P in their respective scanning directions in mutually different orientations (reverse directions). In the following explanations, the direction that coincides with an optical axis AX of the projection optical system PL is the Z axial direction, the direction in which the mask M and the substrate P synchronously move (in the scanning directions) within the plane perpendicular to the Z axial direction is the X axial direction, and the direction perpendicular to the Z axial direction and the X axial direction (non-scanning direction) is the Y axial direction. In addition, the directions around the X, Y, and Z axes are the θX, θY, and θZ directions, respectively. Furthermore, “substrate” herein includes a semiconductor wafer coated with a photoresist, which is a photosensitive material, and “mask” includes a reticle wherein a device pattern, which is reduction projected onto the substrate, is formed.
The projection optical system PL projects and exposes the pattern of the mask M onto the substrate P at a prescribed projection magnification β, and comprises a plurality of optical elements, which includes the optical element (lens) 2 provided at the tip part on the substrate P side, that is supported by a lens barrel PK. In the present embodiment, the projection optical system PL is a reduction system that has a projection magnification β of, for example, ¼ or ⅕. Furthermore, the projection optical system PL may be a unity magnification system or an enlargement system. In addition, the optical element 2 at the tip part of the projection optical system PL of the present embodiment is detachably (replaceably) provided to the lens barrel PK, and the liquid 1 of the immersion area AR2 contacts the optical element 2.
Each of the first and second liquid supply parts 11, 12 comprises a tank, which stores the liquid 1, a pressure pump, and the like, and supplies the liquid 1 onto the substrate P through the supply pipes 11A, 12A and the supply members 13, 14. In addition, the liquid supply operation of the first and second liquid supply parts 11, 12 is controlled by the control apparatus CONT, which is capable of independently controlling the amount of liquid 1 supplied per unit of time by the first and second liquid supply parts 11, 12 onto the substrate P. In addition, each of the first and second liquid supply parts 11, 12 comprises a liquid temperature adjusting mechanism, and supplies the liquid 1 of a temperature substantially the same as that inside the chamber wherein the apparatus is housed (e.g., 23° C.) onto the substrate P.
Furthermore, the front surface PA, which is the exposure surface of the substrate P, is coated with a photoresist (photosensitive material) 90. In the present embodiment, the photosensitive material 90 is a photosensitive material (e.g., TARF-P6100 manufactured by Tokyo Ohka Kogyo Co., Ltd.) for ArF excimer laser light, is liquid repellent (water repellent), and has a contact angle of approximately 70-80°. In addition, in the present embodiment, the side surface PB of the substrate P is given liquid repellency treatment (water repellency treatment). Specifically, the side surface PB of the substrate P is also coated with the abovementioned liquid repellent photosensitive material 90. Furthermore, the rear surface PC of the substrate P is also given liquid repellency treatment by coating it with the abovementioned photosensitive material 90.
FIG. 5 and FIG. 6 depict the second embodiment of the stage apparatus of the present invention.
FIG. 7 depicts the third embodiment of the stage apparatus of the present invention.
The side surface PB and the rear surface PC of the substrate P are coated with a liquid repellent photosensitive material 90 as the liquid repellency treatment, but they may be coated with a liquid repellent (water repellent) prescribed material other than the photosensitive material 90. For example, there are cases wherein the upper layer of the photosensitive material 90, which is coated on the front surface PA that is the exposure surface of the substrate P, is coated with, for example, a protective layer (a film that protects the photosensitive material 90 from the liquid) called a topcoat layer, and the material that forms this topcoat layer (e.g., fluororesin material) is liquid repellent (water repellent) at a contact angle of, for example, approximately 110°. Accordingly, the side surface PB, the rear surface PC of the substrate P are coated with this topcoat layer forming material. Of course, they may be coated with a liquid repellent material other than the photosensitive material 90 and the topcoat layer forming material.
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U.S. Classification 355/72
International Classification G03B27/58, G03F7/20
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NISHII, YASUFUMI;SHIRAISHI, KENICHI;KOHNO, HIROTAKA;SIGNING DATES FROM 20060523 TO 20060530;REEL/FRAME:018002/0603