WO2019137746A1 - Projektionsbelichtungsanlage für die halbleiterlithographie mit verbesserter komponentenjustage und justageverfahren - Google Patents
Projektionsbelichtungsanlage für die halbleiterlithographie mit verbesserter komponentenjustage und justageverfahren Download PDFInfo
- Publication number
- WO2019137746A1 WO2019137746A1 PCT/EP2018/085255 EP2018085255W WO2019137746A1 WO 2019137746 A1 WO2019137746 A1 WO 2019137746A1 EP 2018085255 W EP2018085255 W EP 2018085255W WO 2019137746 A1 WO2019137746 A1 WO 2019137746A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- screw
- stop
- sensor
- contact
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70808—Construction details, e.g. housing, load-lock, seals or windows for passing light in or out of apparatus
- G03F7/70825—Mounting of individual elements, e.g. mounts, holders or supports
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/003—Alignment of optical elements
- G02B7/004—Manual alignment, e.g. micromanipulators
Definitions
- the invention relates to a projection exposure apparatus for semiconductor lithography and to a method for adjusting components of the projection exposure apparatus.
- This type of alignment and screwing the sensors and actuators has the disadvantage that when screwing the sensors and actuators on the component by the contact of the attacks with the reference surface voltages can be frozen, which relax again over time. Such relaxation leads to a change in the position of the component, which should be avoided.
- Object of the present invention is to provide a projection exposure system and a method in which a positioning and screwing of components can be realized on a component without remaining tension.
- the abutment is designed to be movable relative to the component and / or the component fixed to the component such that it can be moved away from the reference surface.
- the abutment is designed in such a way that, after the adjustment of the component, it can be moved away from the component at least to a degree where it is no longer in mechanical contact with the component and also no more forces between the component Stop and the component are transferred. This will especially avoid it in the case Relaxations of the component on the component, ie the reduction of mechanical stresses between the component and the reference surface by mechanical creep, leads to undesired changes in the position of the component.
- the stop comprises a holder and a stop screw arranged in the holder, wherein the stop screw may comprise a contact surface, which may preferably be executed crowned.
- the stop comprises a stop screw
- the desired separation between stop and reference surface can be accomplished by simply turning back the stop screw in a particularly simple manner. If the stop screw is designed to be adjustable in length, there are further options for adjusting the component.
- the length adjustability of the stop screw can be achieved in particular by the stop screw comprising an adjustment screw and a contact screw; while the contact screw can be screwed into an internal thread in the shaft of Justageschraube.
- the change in the length of the stop screw can then be accomplished by turning and fixing the contact screw in the adjustment screw.
- an anti-rotation lock of the contact screw relative to the adjustment screw can be achieved.
- an anti-rotation device for fixing the stop screw after its movement away from the reference surface may be present; the twisting
- an elastically movable element and a recess for receiving the elastically movable element may comprise the cover.
- a method according to the invention for adjusting a component on a component of a projection exposure apparatus comprises the following method steps:
- the moving away of the stop from the reference surface can take place by turning back a stop screw.
- a check of the position of the component on the component can take place. If a need for correction is determined during the check, an adaptation of the stop could first be carried out, whereupon a repositioning, fixing and position control of the component could take place.
- FIG. 1 shows the basic structure of an EUV projection exposure apparatus in which the invention can be realized
- Figure 2 shows a component with stop and a component according to the prior
- FIG. 3 shows a first embodiment of the invention
- FIG. 4 shows a second embodiment of the invention
- Figure 5 is a detail view of the invention
- FIG. 6 shows a flow chart for an adjustment method according to the invention.
- FIG. 1 shows, by way of example, the basic structure of an EUV projection exposure apparatus 1 for microlithography, in which the invention can be used.
- An illumination system of the projection exposure apparatus 1 has, in addition to a light source 3, an illumination optics 4 for illuminating an object field 5 in an object plane 6.
- An EUV radiation 14 produced by the light source 3 as useful optical radiation is aligned by means of a collector integrated in the light source 3 such that it passes through an intermediate focus in the region of an intermediate focus plane 15 before it encounters a field facet mirror 2. After the field facet mirror 2, the EUV radiation 14 is reflected by a pupil facet mirror 16. With the aid of the pupil facet mirror 16 and an optical assembly 17 with mirrors 18, 19 and 20, field facets of the field facet mirror 2 are imaged into the object field 5.
- Illuminated is a reticle 7 arranged in the object field 5, which is held by a reticle holder 8 shown schematically.
- a projection optics 9, which is shown only schematically, serves to image the object field 5 into an image field 10 in an image plane 11.
- a structure on the reticle 7 is imaged onto a light-sensitive layer of one in the region of the image field 10 in the image plane 11 Wafers 12, which is held by a wafer holder 13, also partially shown.
- the light source 3 can emit useful radiation, in particular in a wavelength range between 5 nm and 30 nm.
- a DUV system is constructed like the EUV system 1 described above, wherein mirrors and lenses can be used as optical elements in a DUV system and the light source of a DUV system emits a useful radiation in a wavelength range of 100 nm to 300 nm
- FIG. 2 shows a sensor 21, which in the example shown is arranged on a sensor frame 22 as a component of a lithography system according to the prior art.
- the sensor frame 22 serves as a reference for the positioning of the mirrors of FIG. 1.
- the sensor 21 is used to determine the position and position of a mirror in FIG.
- the sensor frame 22 shown in Figure 2 shows on the plane on which the sensor 21 is mounted (hereinafter referred to as mounting plane 23), beyond this mounting plane outgoing, L-shaped elevation 24.
- the two perpendicular to the mounting plane 23rd standing sides of the L-shaped elevation 24, which are directed to the sensor 21, and the mounting plane 23 of the sensor 21 together form a cube corner, which contacted the sensor 21 with three sides, so mechanically touched.
- the three sides of the cube corner serve as reference surfaces 25 for aligning the sensor 21 in space. Through these three levels, the position of the sensor 21 is determined on the sensor frame 23 in all 6 degrees of freedom.
- the sensor 21 in this exemplary embodiment has 6 contact points with the sensor frame 22.
- FIG. 3 shows a first embodiment of the invention.
- the stresses that remain in the sensor as a result of the contact of the sensor with the sensor frame at all 6 contact points even after the sensor has been screwed are achieved by the three stops 28, which are positioned as shown in FIG serve the sensor in the cube corner, after screwing the sensor on the mounting plane 23 of the sensor frame are adjusted so that they are no longer in contact with the reference surfaces 25 of the L-shaped elevation 24 of the sensor frame, so the reference surface 25 is no longer touch.
- the change in the position of the sensor resulting from the release of the stresses and / or its orientation with respect to the sensor frame can be compensated by calibrating the system.
- the calibration can be carried out, in particular, outside of the production operation of the semiconductor lithographic system.
- the first embodiment of a stop 28 according to the invention shown in FIG. 3 comprises an abutment holder 29 or holder and a stop screw 30.
- the stop 28 is arranged in a recess 34 in a base plate 35 of a sensor 21 which is not completely shown in the figure , Sensor 21 and stop 28 are via the sensor-side interface surface 36 and the stop-side interface surface 37 with each other in mechanical contact.
- the stop screw 30 has a screw head 31 at the first end of its shank and a contact surface 32 at the second end of the shank, which is crowned in the example shown.
- the crowned design of the contact surface 32 leads to an advantageous point contact between the contact surface 32 and the reference surface 25 of the sensor frame.
- the solid lines show the Position of the stop screw 30 in the holder 29, before the sensor is screwed to the sensor frame, so the contact surface 32 rests against the reference surface 25.
- the stop screw 30 is screwed so far into the holder 29 that the underside of the screw head 31 rests on the side of the holder 29 facing it and is pressed there, thus touching it in a flat manner. This side of the holder 29 is thus the reference surface for the head 31 of the stop screw 30 in a fully screwed position.
- the dashed lines in Figure 3, unless they are covered by the solid lines show the position of the stopper screw 30 after the sensor 21 has been screwed to the sensor frame and the stopper screw 30 has been unscrewed so far out of the holder 29 that the contact surface 32 of Stop screw the reference surface 25 of the sensor frame is no longer touched.
- the stop screw 30 in the exemplary embodiment shown in FIG. 3 comprises a hexagon 33 formed on a region of the shaft adjoining the crowned contact surface. Other shaped elements can also be attached to the shaft of the stop screw, which, like the hexagon 33, can be used as an engagement region of a suitable key can serve.
- FIG. 4 shows a further embodiment of the invention in detail.
- the stop 40 shown in FIG. 4 comprises a stop holder 41 and a stop screw 42, which in turn comprises an adjusting screw 43 and a contact screw 44.
- the stop bracket is fixed in the example shown by means of screws 60 on the sensor 21.
- the stop screw 42 is shown in the screwed-in state, ie pressed firmly onto the interface surface 45 of the flattening with the underside of its head.
- the stop screw 42 comprises, as already mentioned in the example shown, a first part, the adjusting screw 43 and a second part, the contact screw 44, which is screwed into a formed in the shaft of the adjusting screw 43 internal thread.
- the adjusting screw 43 is bolted with its outer thread formed on the shaft in turn in a formed in the Flaltung 41 internal thread.
- the adjustment screw 43 can thus be moved relative to the support 41, on the one hand to be screwed into the support 41 until the underside of the screw head makes contact with the interface surface 45 of the support 41 and is pressed against the latter, on the other hand around the adjustment screw 43 from the bottle 41
- the spherical contact surface 46 of the reference surface of the sensor frame to solve, whereby a distance between the contact surface 46 and the reference surface is created to possible by screwing the sensor to the sensor frame to reduce the tension created.
- the length of the stopper screw 42 by a Fluntersdusen or Flinewearhen the contact screw 44 can be varied.
- a single type of stopper can be used. be used, which significantly reduces the required stockpiling.
- the thread can be clamped, this can be done by a on the shaft of the
- the force for tensioning the thread can also be realized by a not explicitly shown arrangement with a spring which presses on the shank of the contact screw 44.
- the length of the stop screw 42 can also be changed by means of washers 48 between the contact screw 44 and the adjustment screw 43, as also indicated in FIG.
- the washers 48 which are also called spacers, are ground to a certain thickness depending on the requirements of the length of the stopper screw 42 and then positioned between the head of the contact screw 44 and the adjustment screw 43.
- an anti-twist device on the screw head of the adjusting screw 43, which, as shown in FIG. 4, is guided, for example, either by a sprung pin 50 as an elastically movable element through the screw head, which is provided in the interface surface 45 of the holder 41.
- hene recess 51 engages, or a fixed in the interface surface 45 of the holder spring 52, which in turn engages as an elastically movable element in a provided on the circumference of the screw head recess 53, can be executed.
- Both variants shown prevent further rotation of the stop screw 42 and thus contact of the contact surface 46 of the stop 40 with the reference surface or a complete unscrewing the stop screw 42 from the holder 41.
- This solution can also for the one-piece stop screw shown in Figure 3 30 are used.
- FIG. 4 and described above are exemplary of further implementations of the invention which, for example, allow a change in the length of the stop screw 42 without having to remove the stopper from the component or component, ie from the outside .
- the solution in which a washer 48 or a spacer is used between the contact screw 44 and the adjusting screw 43, can be realized without unscrewing the stopper by the sensor, if, in addition to the example designed as a hexagon head of the contact screw also a way is provided to fix the adjustment screw to realize a movement, in particular a rotation of the contact screw and the adjustment screw against each other.
- FIG. 5 shows a plan view of the sensor 21 and the stop 40 fastened to the sensor 21.
- the holder is fastened to the sensor 21 by means of four screws 60. It is also possible to stop the 40 on the part of
- Component such as a sensor frame to attach and form the corresponding reference surfaces on the sensor.
- This arrangement is functionally identical and is influenced by other criteria such as space or accessibility of the component or the component.
- the shape of the holder 41 and the type of screwing, so the number and arrangement of the screws 60 are exemplary and can be performed in any other form.
- FIG. 6 describes a possible method with which the device according to the invention of FIGS. 3-5 is arranged for the adjustment and tension-free assembly of components on components.
- the process steps shown in the figure are the determination of the length of the individual stops and the mounting of the stop screws in the holder of the stop to the degree to which the screw head on the interface surface of the holder is applied over the entire surface, preceded.
- the preassembled stops are attached to the component at the screw points provided for this purpose.
- the component is pushed into the reference stops intended for assembly, ie the cube corner.
- the component is screwed to the component at its Verschraubungsticianen.
- the position of the sensor is checked and, if appropriate, steps one to three are repeated with another stop screw
- the stop screws are unscrewed out of the holder and thus the existing contact between the stops and the reference surfaces is canceled, whereby the tensions possibly frozen by the screwing are released.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020537693A JP7288447B2 (ja) | 2018-01-15 | 2018-12-17 | コンポーネント調整を改良した半導体リソグラフィ用の投影露光装置及び調整方法 |
CN201880086458.XA CN111602091A (zh) | 2018-01-15 | 2018-12-17 | 半导体光刻的具有改进的部件调节的投射曝光设备、以及调节方法 |
US16/921,929 US11048177B2 (en) | 2018-01-15 | 2020-07-06 | Projection exposure apparatus for semiconductor lithography with improved component adjustment and adjustment method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018200524.9A DE102018200524A1 (de) | 2018-01-15 | 2018-01-15 | Projektionsbelichtungsanlage für die Halbleiterlithographie mit verbesserter Komponentenjustage und Justageverfahren |
DE102018200524.9 | 2018-01-15 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/921,929 Continuation US11048177B2 (en) | 2018-01-15 | 2020-07-06 | Projection exposure apparatus for semiconductor lithography with improved component adjustment and adjustment method |
Publications (1)
Publication Number | Publication Date |
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WO2019137746A1 true WO2019137746A1 (de) | 2019-07-18 |
Family
ID=64899301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2018/085255 WO2019137746A1 (de) | 2018-01-15 | 2018-12-17 | Projektionsbelichtungsanlage für die halbleiterlithographie mit verbesserter komponentenjustage und justageverfahren |
Country Status (5)
Country | Link |
---|---|
US (1) | US11048177B2 (de) |
JP (1) | JP7288447B2 (de) |
CN (1) | CN111602091A (de) |
DE (1) | DE102018200524A1 (de) |
WO (1) | WO2019137746A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019217629B4 (de) * | 2019-11-15 | 2022-09-15 | Carl Zeiss Smt Gmbh | Verfahren zur Ausrichtung eines Interferometers |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009029536A1 (de) * | 2008-09-17 | 2010-04-15 | Carl Zeiss Smt Ag | Verbindungsanordnung für eine optische Einrichtung |
DE102016204143A1 (de) * | 2016-03-14 | 2017-09-14 | Carl Zeiss Smt Gmbh | Optische Vorrichtung für eine Lithographieanlage sowie Lithographieanlage |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4711438A (en) * | 1986-05-08 | 1987-12-08 | Micrion Limited Partnership | Mask holding |
JPH118188A (ja) * | 1997-06-19 | 1999-01-12 | Nec Kansai Ltd | レチクル搬送治具およびレチクル搬送方法 |
US6333775B1 (en) * | 1999-01-13 | 2001-12-25 | Euv Llc | Extreme-UV lithography vacuum chamber zone seal |
JP4546019B2 (ja) * | 2002-07-03 | 2010-09-15 | 株式会社日立製作所 | 露光装置 |
US6806943B2 (en) * | 2002-08-09 | 2004-10-19 | International Business Machines Corporation | Mask clamping device |
JP2004246158A (ja) * | 2003-02-14 | 2004-09-02 | Hamamatsu Photonics Kk | 半導体レーザ装置 |
JP4396979B2 (ja) * | 2004-07-16 | 2010-01-13 | 株式会社シンク・ラボラトリー | レーザ露光装置 |
JP2006261155A (ja) * | 2005-03-15 | 2006-09-28 | Fuji Photo Film Co Ltd | 露光装置及び露光方法 |
US8739383B2 (en) * | 2009-04-20 | 2014-06-03 | Nikon Corporation | Method and apparatus for aligning mirror blocks of a multi-element mirror assembly |
DE102011005885A1 (de) * | 2011-03-22 | 2012-09-27 | Carl Zeiss Smt Gmbh | Lithographievorrichtung |
CN102540386B (zh) * | 2012-02-07 | 2013-09-18 | 中国科学院光电技术研究所 | 一种动镜弹性支撑装置 |
CN206395707U (zh) * | 2017-01-17 | 2017-08-11 | 安徽建筑大学 | 一种起吊装置用螺栓式连接件 |
-
2018
- 2018-01-15 DE DE102018200524.9A patent/DE102018200524A1/de not_active Ceased
- 2018-12-17 JP JP2020537693A patent/JP7288447B2/ja active Active
- 2018-12-17 CN CN201880086458.XA patent/CN111602091A/zh active Pending
- 2018-12-17 WO PCT/EP2018/085255 patent/WO2019137746A1/de active Application Filing
-
2020
- 2020-07-06 US US16/921,929 patent/US11048177B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009029536A1 (de) * | 2008-09-17 | 2010-04-15 | Carl Zeiss Smt Ag | Verbindungsanordnung für eine optische Einrichtung |
DE102016204143A1 (de) * | 2016-03-14 | 2017-09-14 | Carl Zeiss Smt Gmbh | Optische Vorrichtung für eine Lithographieanlage sowie Lithographieanlage |
Also Published As
Publication number | Publication date |
---|---|
CN111602091A (zh) | 2020-08-28 |
US20200333715A1 (en) | 2020-10-22 |
DE102018200524A1 (de) | 2019-07-18 |
JP7288447B2 (ja) | 2023-06-07 |
JP2021510841A (ja) | 2021-04-30 |
US11048177B2 (en) | 2021-06-29 |
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