WO2021149602A1 - ペリクルフレーム、ペリクル、ペリクルの検査方法、ペリクル付露光原版及び露光方法、並びに半導体又は液晶表示板の製造方法 - Google Patents
ペリクルフレーム、ペリクル、ペリクルの検査方法、ペリクル付露光原版及び露光方法、並びに半導体又は液晶表示板の製造方法 Download PDFInfo
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- WO2021149602A1 WO2021149602A1 PCT/JP2021/001196 JP2021001196W WO2021149602A1 WO 2021149602 A1 WO2021149602 A1 WO 2021149602A1 JP 2021001196 W JP2021001196 W JP 2021001196W WO 2021149602 A1 WO2021149602 A1 WO 2021149602A1
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- Prior art keywords
- pellicle
- pellicle frame
- frame
- exposure
- original plate
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- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/62—Pellicles, e.g. pellicle assemblies, e.g. having membrane on support frame; Preparation thereof
- G03F1/64—Pellicles, e.g. pellicle assemblies, e.g. having membrane on support frame; Preparation thereof characterised by the frames, e.g. structure or material, including bonding means therefor
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- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/22—Masks or mask blanks for imaging by radiation of 100nm or shorter wavelength, e.g. X-ray masks, extreme ultraviolet [EUV] masks; Preparation thereof
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- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/68—Preparation processes not covered by groups G03F1/20 - G03F1/50
- G03F1/82—Auxiliary processes, e.g. cleaning or inspecting
- G03F1/84—Inspecting
Definitions
- the present invention relates to a pellicle frame, a pellicle, a method for inspecting a pellicle, an exposure original plate with a pellicle and an exposure method, and a method for manufacturing a semiconductor or a liquid crystal display board, which are attached to a photomask for lithography as a dust shield.
- the wavelength of the exposure light source has been shortened. That is, the exposure light source has shifted from g-ray (436 nm) and i-line (365 nm) by a mercury lamp to KrF excimer laser (248 nm), ArF excimer laser (193 nm), and EUV with a main wavelength of 13.5 nm. (Excimer Ultra Violet) EUV exposure using light is being studied.
- the basic structure of this pellicle is that a pellicle film with high transmittance for light used for exposure is stretched on the upper end surface of a pellicle frame made of aluminum, titanium, etc., and an airtight gasket is formed on the lower end surface. Is what you are doing.
- An adhesive layer is generally used for the airtight gasket, and a protective sheet for protecting the adhesive layer is attached.
- the pellicle film is a nitrocellulose, cellulose acetate, fluorine that allows light used for exposure (g-line (436 nm), i-line (365 nm), KrF excimer laser (248 nm), ArF excimer laser (193 nm), etc.) to be transmitted well. Although it is composed of a polymer or the like, an ultrathin silicon film or a carbon film is being studied as a pellicle film for EUV exposure.
- the pellicle Since the purpose of the pellicle is to protect the exposed original plate from foreign matter, the pellicle is required to have a very high degree of cleanliness. Therefore, in the pellicle manufacturing process, it is necessary to inspect the pellicle film, the pellicle frame, the adhesive, and the protective sheet for foreign matter before shipping.
- foreign matter inspection on the pellicle frame is performed by shining light on the frame in a dark room and visually detecting scattered light from the foreign matter. If foreign matter is present on the inner surface of the pellicle frame, the foreign matter can easily fall onto the mask surface due to vibration or movement of air. Therefore, in recent years, in addition to the visual inspection, the inner surface of the pellicle frame is increasingly inspected by a foreign matter inspection device.
- a laser such as a He-Ne laser or a semiconductor laser is applied to a pellicle frame, and scattered light from the foreign matter is detected by a semiconductor detector (CCD) or the like.
- Patent Document 1 proposes to improve the inspectability by reducing the reflectance of the inner surface of the pellicle frame with respect to the inspection light of 400 to 1100 nm to 0.3% or less.
- the pellicle frame material and the coloring method are strictly selected. It was necessary and could be difficult to achieve depending on the material.
- the wavelength range of the He-Ne laser and the semiconductor laser used for the inspection light is limited to, for example, 640 to 660 nm, and it is not always necessary to lower the reflectance in the entire wavelength region of 400 to 1100 nm. do not have.
- the present invention has been made in view of the above circumstances.
- By lowering the reflectance of the inner surface of the pellicle frame with respect to the inspection light the scattered light from the frame can be suppressed as much as possible, and the foreign matter inspection property can be improved.
- the present inventor is a frame-shaped pellicle frame having an upper end surface on which a pellicle film is provided and a lower end surface facing a photomask, and has a minimum reflectance of 20% at a light source wavelength of 500 to 1000 nm on the inner surface of the pellicle frame.
- the scattered light from the pellicle frame was suppressed as much as possible, and by using a specific wavelength having a reflectance of 20% or less as the wavelength of the inspection light, only with respect to the wavelength of this inspection light.
- a pellicle frame having good inspectability can be provided without major restrictions on the surface treatment such as a method for coloring the pellicle frame, and the present invention has been made.
- the present invention provides the following pellicle frame, pellicle, pellicle inspection method, exposure original plate with pellicle and exposure method, and method for manufacturing a semiconductor or liquid crystal display board.
- a frame-shaped pellicle frame having an upper end surface on which a pellicle film is provided and a lower end surface facing a photomask, and has a minimum reflectance of 20% or less at a light source wavelength of 500 to 1000 nm on at least the inner surface of the pellicle frame.
- a pellicle frame that features that.
- the pellicle frame according to 1 or 2 above wherein the surface of the pellicle frame is subjected to a hand polishing treatment, a sandblasting treatment, a chemical polishing treatment, or an electrolytic polishing treatment.
- the pellicle frame according to 1 or 2 above which is a pellicle frame used for EUV pellicle.
- the pellicle according to 15 or 16 above wherein the pellicle film is a silicon film or a carbon film. 18.
- 20. A method for inspecting a pellicle in which a foreign matter present in the pellicle according to the above 15 is detected by a foreign matter inspection machine, wherein a specific wavelength having a reflectance of at least the inner surface of the pellicle frame of 20% or less is used as the wavelength of the inspection light.
- a method for inspecting a pellicle which comprises detecting a foreign substance existing in the pellicle.
- 21. An exposure original plate with a pellicle, characterized in that the pellicle according to the above 15 is attached to the exposure original plate. 22.
- 23. The exposure original plate with a pellicle according to the above 21, which is an exposure original plate with a pellicle used for EUV lithography.
- 24. An exposure method characterized in that exposure is performed by the exposure original plate with a pellicle according to the above 21. 25.
- 26. A method for manufacturing a semiconductor, which comprises a step of exposing a semiconductor wafer by using the exposure original plate with a pellicle according to the above 21. 27. The method for manufacturing a semiconductor according to the above 26, wherein the exposure light source is an exposure light source that emits EUV light.
- 28. A method for manufacturing a liquid crystal display plate, which comprises a step of exposing a liquid crystal original plate using the exposure original plate with a pellicle according to the above 21. 29. The method for manufacturing a liquid crystal display plate according to the above 28, wherein the exposure light source is an exposure light source that emits EUV light.
- the pellicle frame In the method for inspecting a pellicle frame, a pellicle, and a pellicle of the present invention, scattered light from the pellicle frame is suppressed as much as possible, and a specific wavelength at which the reflectance of the pellicle frame is 20% or less is used as the wavelength of the inspection light. Therefore, the pellicle frame can be surface-treated so as to reduce the reflectance only with respect to the wavelength of the inspection light, the degree of freedom of the surface treatment is increased, and the pellicle frame which is convenient for inspection can be provided. can.
- the pellicle frame of the present invention is a frame-shaped pellicle frame having an upper end surface on which a pellicle film is provided and a lower end surface facing a photomask.
- the pellicle frame is frame-shaped, its shape corresponds to the shape of the photomask on which the pellicle is attached. Generally, it has a quadrangular (rectangular or square) frame shape. In addition to the quadrangular frame, polygonal frames such as triangular frame, pentagonal frame, hexagonal frame, and octagonal frame, and photomask shapes such as round frame and oval frame. Can be changed.
- the polygonal frame shape such as a quadrangular frame shape includes a form in which existing corners are chamfered such as C chamfering, R chamfering, and thread chamfering.
- the pellicle frame has a surface for providing the pellicle film (here, the upper end surface) and a surface facing the photomask when the photomask is attached (here, the lower end surface).
- a pellicle film is provided on the upper end surface of the pellicle frame via an adhesive or the like, and an adhesive or the like for attaching the pellicle to the photomask is provided on the lower end surface, but this is not the case.
- the material of the pellicle frame is not limited, and known materials can be used. Since the pellicle frame for EUV may be exposed to high temperature, a material having a small coefficient of thermal expansion is preferable. For example, Si, SiO 2 , SiN, quartz, Invar, titanium, titanium alloy and the like can be mentioned. Of these, titanium and titanium alloys are preferable because of their ease of processing and light weight.
- the dimensions of the pellicle frame are not particularly limited, but since the height of the EUV pellicle is limited to 2.5 mm or less, the thickness of the EUV pellicle frame is smaller than that and is less than 2.5 mm. In particular, the thickness of the EUV pellicle frame is preferably 1.5 mm or less in consideration of the thickness of the pellicle film, the mask adhesive, and the like.
- the pellicle frame of the present invention is surface-treated so that the minimum reflectance is 20% or less in a wavelength range of 500 to 1000 nm at least on the inner surface thereof.
- the minimum reflectance in the range of the light source wavelength is 20% or less on the entire peripheral surface of the pellicle frame, and the surface treatment of the pellicle frame is appropriately applied.
- the method of this surface treatment is not particularly limited. For example, a method of forming a 100 ⁇ m oxide film on the surface by anodizing treatment to develop a blue color by an interference color, or a method of applying a black nickel plating treatment to blacken the surface. can. Further, the oxide film can be doped with carbon to blacken the frame surface.
- the pellicle frame of the present invention does not have to have a reflectance of 20% or less for all wavelengths in the above-mentioned wavelength range of 500 to 1000 nm, and has a reflectance of 20% for a specific wavelength in the above-mentioned wavelength range.
- the specific wavelength referred to here is the wavelength of the inspection light used in the foreign matter inspection machine, and the reflectance is preferably 20% or less, particularly preferably 10% or less with respect to this wavelength.
- the inspection light to be used for the foreign matter inspection machine can be selected from the reflectance distribution indicating the minimum reflectance of the pellicle frame.
- the surface may be subjected to scratch erasing treatment such as hand polishing, sandblasting treatment, chemical polishing treatment, and electrolytic polishing treatment.
- scratch erasing treatment such as hand polishing, sandblasting treatment, chemical polishing treatment, and electrolytic polishing treatment.
- a jig hole used for handling and peeling the pellicle from the photomask is provided on the side surface of the pellicle frame.
- the size of the jig hole is 0.5 to 1.0 mm in length (diameter in the case of a circle) in the thickness direction of the pellicle frame.
- the shape of the hole is not limited and may be circular or rectangular.
- the pellicle frame is provided with a ventilation part, and a filter can be provided in the ventilation part to prevent foreign matter from entering.
- a pellicle film is provided on the upper end surface of the pellicle frame via an adhesive or an adhesive.
- the material of the pressure-sensitive adhesive and the adhesive is not limited, and known materials can be used.
- a pressure-sensitive adhesive or an adhesive having a strong adhesive force is preferable.
- the material of the pellicle film is not particularly limited, but a material having high transmittance at the wavelength of the exposure light source and high light resistance is preferable.
- a material having high transmittance at the wavelength of the exposure light source and high light resistance is preferable.
- an ultrathin silicon film, a carbon film, or the like is used for EUV exposure.
- these carbon films include films such as graphene, diamond-like carbon, and carbon nanotubes.
- the pellicle film is not limited to a thin film, and a pellicle film including a support frame for supporting the pellicle film can also be adopted.
- a method of forming a pellicle film by forming a pellicle film on a silicon wafer and removing the silicon wafer by back-etching only a portion used as the pellicle film can be adopted. In this case, the pellicle film is obtained in a state of being supported by a silicon frame.
- a mask adhesive for attaching to a photomask is formed on the lower end surface of the pellicle frame. Generally, it is preferable that the mask adhesive is provided over the entire circumference of the pellicle frame.
- the mask adhesive known ones can be used, and acrylic adhesives and silicone adhesives can be preferably used.
- the pressure-sensitive adhesive may be processed into any shape, if necessary.
- a release layer (separator) for protecting the adhesive may be attached to the lower end surface of the mask adhesive.
- the material of the release layer is not particularly limited, and is, for example, polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer (PFA), polyethylene (PE), polycarbonate ( PC), polyvinyl chloride (PVC), polypropylene (PP) and the like can be used.
- a release agent such as a silicone-based release agent or a fluorine-based release agent may be applied to the surface of the release layer.
- the pellicle can be attached to the photomask by physical fixing means other than the mask adhesive. Examples of the fixing means include screws, bolts, nuts, rivets, keys, pins and the like. It is also possible to use a mask adhesive and a physical fixing means together.
- FIG. 1 shows an example of the pellicle frame 1 of the present invention, where reference numeral 11 is an inner surface of the pellicle frame, reference numeral 12 is an outer surface of the pellicle frame, reference numeral 13 is an upper end surface of the pellicle frame, and reference numeral 14 is a pellicle frame. Indicates the lower end surface of. Normally, a jig hole used for peeling the pellicle from the photomask is provided on the long side of the pellicle frame, but it is not particularly shown in FIG.
- FIG. 2 shows the pellicle 10, and the pellicle film 2 is adhered and stretched on the upper end surface of the pellicle frame 1 with an adhesive 4. Further, the lower end surface of the pellicle frame 1 is detachably adhered to the photomask 3 with an adhesive 5 to protect the pattern surface on the photomask 3.
- the pellicle of the present invention is used not only as a protective member for suppressing foreign matter from adhering to the exposure master plate in the EUV exposure apparatus, but also for protecting the exposure master plate during storage of the exposure master plate and transportation of the exposure master plate. It may be used as a protective member for.
- a method of attaching a pellicle to an exposure original plate such as a photomask and manufacturing an exposure original plate with a pellicle there are a method of sticking with a mask adhesive described above, an electrostatic adsorption method, a method of mechanically fixing the pellicle, and the like.
- the method for manufacturing a semiconductor or a liquid crystal display plate includes a system for exposing a substrate (semiconductor wafer or liquid crystal original plate) with the above-mentioned exposure original plate with a pellicle.
- a substrate semiconductor wafer or liquid crystal original plate
- the above exposure master plate with a pellicle is installed on a stepper in order to form a photoresist pattern corresponding to an integrated circuit or the like on a substrate.
- EUV exposure uses a projection optical system in which EUV light is reflected by the exposure original plate and guided to a substrate, and these are performed under reduced pressure or vacuum.
- the yield in the lithography process can be improved by using the exposure original plate with a pellicle.
- Example 1 A titanium pellicle frame (outer dimensions 150 mm ⁇ 118 mm ⁇ 1.5 mm, frame width 4.0 mm) was produced. A titanium frame is immersed in a mixed electrolytic solution of phosphoric acid, sulfuric acid and hydrogen peroxide, and an oxide film is formed by anodizing under the conditions of a temperature of 25 ° C., a voltage of 20 V and a time of 30 minutes, and the interference color is blue.
- a mixed electrolytic solution of phosphoric acid, sulfuric acid and hydrogen peroxide was produced.
- an oxide film is formed by anodizing under the conditions of a temperature of 25 ° C., a voltage of 20 V and a time of 30 minutes, and the interference color is blue.
- This pellicle frame is washed with a neutral detergent and pure water, and 100 parts by mass of a silicone adhesive (X-40-3264 manufactured by Shin-Etsu Chemical Co., Ltd.) is applied to the upper end surface of the frame and a curing agent (Shin-Etsu Chemical Co., Ltd. (Shin-Etsu Chemical Co., Ltd.) A material prepared by adding 1 part by mass of PT-56) manufactured by Co., Ltd. and stirring was applied so as to have a width of 1 mm and a thickness of 0.1 mm.
- the frame As a mask adhesive, 0.1 part by mass of an acrylic adhesive (SK Dyne 1495 manufactured by Soken Kagaku Co., Ltd.) and 0.1 part by mass of a curing agent (L-45 manufactured by Soken Kagaku Co., Ltd.).
- the stirred material was applied over the entire circumference so as to have a width of 1 mm and a thickness of 0.1 mm.
- the pellicle frame was heated at 90 ° C. for 12 hours to cure the adhesive on the upper and lower end surfaces.
- an ultrathin silicon film as a pellicle film was pressure-bonded to an adhesive formed on the upper end surface of the frame to complete the pellicle.
- Example 2 After producing the titanium frame, anodizing, black dyeing, and sealing treatment were sequentially performed to form a black oxide film on the surface of the frame. This is the same as in Example 1 except for the method for coloring the frame surface.
- Example 3 After producing the aluminum alloy frame, anodizing, black dyeing, and sealing treatment were sequentially performed to form a black oxide film on the surface of the frame. The same as in Example 1 except for the material and surface treatment of this frame.
- Example 1 This is the same as in Example 1 except that no surface treatment was performed on the titanium pellicle frame.
- the pellicle obtained in Examples 1 to 3 and Comparative Example 1 was inspected by a foreign matter inspection device.
- the same frame material as in Examples 1 to 3 and Comparative Example 1 was used, and the reflectance of each sample was measured using a sample piece whose surface treatment was applied to the material.
- the obtained pellicle was gripped by a special jig using a jig hole, and standard particles of 20 ⁇ m were attached to a part of the inner wall surface of the pellicle frame.
- the pellicle was placed together with the jig in an inner foreign matter inspection device (manufactured by Shin-Etsu Engineering Co., Ltd.) equipped with a semiconductor laser having a wavelength of 532 nm, and the quality of the foreign matter inspection of the inner wall surface was evaluated according to the following criteria.
- ⁇ criterion> Scattered light was not confirmed in the region where particles did not adhere, and scattered light was confirmed only in the region where particles adhered.
- X Scattered light was confirmed even in the portion where no particles were attached.
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- General Physics & Mathematics (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Liquid Crystal (AREA)
Abstract
Description
1.ペリクル膜を設ける上端面とフォトマスクに面する下端面とを有する枠状のペリクルフレームであって、該ペリクルフレームの少なくとも内側面での光源波長500~1000nmの最小反射率が20%以下であることを特徴とするペリクルフレーム。
2.上記最小反射率が10%以下である上記1記載のペリクルフレーム。
3.光源波長500~1000nmの全ての波長における反射率が20%以下となる上記1又は2記載のペリクルフレーム。
4.光源波長500~1000nmの全ての波長における反射率が10%以下となる上記1又は2記載のペリクルフレーム。
5.ペリクルフレームの全周面での光源波長500~1000nmの最小反射率が20%以下である上記1又は2記載のペリクルフレーム。
6.ペリクルフレームの材質として、チタン又はチタン合金が含まれる上記1又は2記載のペリクルフレーム。
7.ペリクルフレームの材質として、アルミニウム又はアルミニウム合金が含まれる上記1又は2記載のペリクルフレーム。
8.ペリクルフレームの厚みが2.5mm未満である上記1又は2記載のペリクルフレーム。
9.ペリクルフレームの厚みが1.5mm未満である上記1又は2記載のペリクルフレーム。
10.ペリクルフレームの表面に酸化膜が形成されている上記1又は2記載のペリクルフレーム。
11.ペリクルフレームの表面が黒色化されている上記1又は2記載のペリクルフレーム。
12.ペリクルフレームの表面にキズ消し処理が施されている上記1又は2記載のペリクルフレーム。
13.ペリクルフレームの表面に、手磨き処理、サンドブラスト処理、化学研磨処理、又は、電解研磨処理が施されている上記1又は2記載のペリクルフレーム。
14.EUV用ペリクルに用いられるペリクルフレームである上記1又は2記載のペリクルフレーム。
15.上記1記載のペリクルフレームと、該ペリクルフレームの一端面に粘着剤又は接着剤を介して設けられるペリクル膜とを具備することを特徴とするペリクル。
16.ペリクル膜が、ペリクルフレームの上端面に設けられる上記15記載のペリクル。
17.ペリクル膜が、シリコン膜又は炭素膜である上記15又は16記載のペリクル。
18.ペリクルの高さが2.5mm以下である上記15又は16記載のペリクル。
19.EUVリソグラフィに用いられるペリクルである上記15又は16記載のペリクル。
20.上記15記載のペリクルに存する異物を異物検査機により検出するペリクルの検査方法であって、ペリクルフレームの少なくとも内側面での反射率が20%以下となる特定波長を検査光の波長として用いることにより、上記ペリクルに存する異物を検出することを特徴とするペリクルの検査方法。
21.露光原版に上記15記載のペリクルが装着されていることを特徴とするペリクル付露光原版。
22.露光原版が、EUV用露光原版である上記21記載のペリクル付露光原版。
23.EUVリソグラフィに用いられるペリクル付露光原版である上記21記載のペリクル付露光原版。
24.上記21記載のペリクル付露光原版によって露光が行われることを特徴とする露光方法。
25.露光の光源が、EUV光を発する露光光源である上記24記載の露光方法。
26.上記21記載のペリクル付露光原版を用いて、半導体ウエハを露光する工程を備えることを特徴とする半導体の製造方法。
27.露光の光源が、EUV光を発する露光光源である上記26記載の半導体の製造方法。
28.上記21記載のペリクル付露光原版を用いて、液晶用原版を露光する工程を備えることを特徴とする液晶表示板の製造方法。
29.露光の光源が、EUV光を発する露光光源である上記28記載の液晶表示板の製造方法。
本発明のペリクルフレームは、ペリクル膜を設ける上端面とフォトマスクに面する下端面とを有する枠状のペリクルフレームである。
チタン製のペリクルフレーム(外寸150mm×118mm×1.5mm、フレーム幅4.0mm)を作製した。チタン製のフレームを、リン酸、硫酸及び過酸化水素の混合電解液に浸漬し、温度25℃、電圧20V、時間30分の条件で、陽極酸化により酸化膜を形成し、干渉色である青色を発色させた。このペリクルフレームを中性洗剤と純水とにより洗浄し、該フレームの上端面にはシリコーン粘着剤(信越化学工業(株)製X-40-3264)100質量部に硬化剤(信越化学工業(株)製PT-56)を1質量部加えて撹拌した材料を、幅1mm、厚み0.1mmになるよう塗布した。また、フレームの下端面にはマスク粘着剤として、アクリル粘着剤(綜研化学(株)製SKダイン1495)100質量部に硬化剤(綜研化学(株)製L-45)を0.1質量部加えて撹拌した材料を、全周に亘り、幅1mm、厚み0.1mmになるよう塗布した。その後、ペリクルフレームを90℃で12時間加熱して、上下端面の粘着剤を硬化させた。続いて、ペリクル膜として極薄シリコン膜を、フレームの上端面に形成した粘着剤に圧着させて、ペリクルを完成させた。
チタンフレームを作製した後、陽極酸化、黒色染色、封孔処理を順次行い、該フレームの表面に黒色の酸化被膜を形成した。このフレーム表面の着色処理方法以外は、実施例1と同じである。
アルミニウム合金製フレームを作製した後、陽極酸化、黒色染色、封孔処理を順次行い、該フレームの表面に黒色の酸化被膜を形成した。このフレームの材質及び表面処理以外は、実施例1と同じである。
チタン製のペリクルフレームについて表面処理を何も行わなかった以外は実施例1と同じである。
3cm×3cm、厚み5mmのサンプルピースを準備し、実施例1~3及び比較例1と同様の表面処理を施したサンプルを準備した。「分光光度計V-780」(日本分光(株)製、型式名)を用いて、500~1000nmの反射率を測定した。最小反射率と検査光(532nm)での反射率との測定値を表1示す。最小反射率については分光光度計から得られたチャートから特定した。なお、検査光に532nmのレーザーを選定した理由としては、このような半導体レーザーはコンパクトでありながらも安定性に優れており、装置組込用として用いやすく、且つ半導体向けの検査装置で使用実績があるからである。
得られたペリクルを、冶具穴を利用して専用の治具に把持し、ペリクルフレームの内壁面の一部分に20μmの標準粒子を付着させた。治具とともに、上記ペリクルを、波長532nmの半導体レーザーを備えた内面異物検査装置(信越エンジニアリング(株)製)に入れ、内壁面の異物検査の良否について下記の基準により評価した。
〈判定基準〉
〇:粒子が付着していない領域では散乱光は確認されず、粒子が付着する部分のみ散乱光を確認した。
×:粒子が付着していない部分においても散乱光を確認した。
実施例1~3のペリクルフレームを用いた場合、検査光(532nm)でのペリクルフレームでの反射率を20%以下にすることにより、異物検査機による検査性の良いペリクルを提供することができた。これに対して、比較例1のペリクルフレームを用いた場合、異物粒子が付着していない部分においてもフレームの散乱光を確認されたため検査性が良好なものとはいえなかった。
2 ペリクル膜
3 フォトマスク
4 ペリクル膜接着剤
5 フォトマスク粘着剤
10 ペリクル
Claims (29)
- ペリクル膜を設ける上端面とフォトマスクに面する下端面とを有する枠状のペリクルフレームであって、該ペリクルフレームの少なくとも内側面での光源波長500~1000nmの最小反射率が20%以下であることを特徴とするペリクルフレーム。
- 上記最小反射率が10%以下である請求項1記載のペリクルフレーム。
- 光源波長500~1000nmの全ての波長における反射率が20%以下となる請求項1又は2記載のペリクルフレーム。
- 光源波長500~1000nmの全ての波長における反射率が10%以下となる請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの全周面での光源波長500~1000nmの最小反射率が20%以下である請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの材質として、チタン又はチタン合金が含まれる請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの材質として、アルミニウム又はアルミニウム合金が含まれる請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの厚みが2.5mm未満である請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの厚みが1.5mm未満である請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの表面に酸化膜が形成されている請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの表面が黒色化されている請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの表面にキズ消し処理が施されている請求項1又は2記載のペリクルフレーム。
- ペリクルフレームの表面に、手磨き処理、サンドブラスト処理、化学研磨処理、又は、電解研磨処理が施されている請求項1又は2記載のペリクルフレーム。
- EUV用ペリクルに用いられるペリクルフレームである請求項1又は2記載のペリクルフレーム。
- 請求項1記載のペリクルフレームと、該ペリクルフレームの一端面に粘着剤又は接着剤を介して設けられるペリクル膜とを具備することを特徴とするペリクル。
- ペリクル膜が、ペリクルフレームの上端面に設けられる請求項15記載のペリクル。
- ペリクル膜が、シリコン膜又は炭素膜である請求項15又は16記載のペリクル。
- ペリクルの高さが2.5mm以下である請求項15又は16記載のペリクル。
- EUVリソグラフィに用いられるペリクルである請求項15又は16記載のペリクル。
- 請求項15記載のペリクルに存する異物を異物検査機により検出するペリクルの検査方法であって、ペリクルフレームの少なくとも内側面での反射率が20%以下となる特定波長を検査光の波長として用いることにより、上記ペリクルに存する異物を検出することを特徴とするペリクルの検査方法。
- 露光原版に請求項15記載のペリクルが装着されていることを特徴とするペリクル付露光原版。
- 露光原版が、EUV用露光原版である請求項21記載のペリクル付露光原版。
- EUVリソグラフィに用いられるペリクル付露光原版である請求項21記載のペリクル付露光原版。
- 請求項21記載のペリクル付露光原版によって露光が行われることを特徴とする露光方法。
- 露光の光源が、EUV光を発する露光光源である請求項24記載の露光方法。
- 請求項21記載のペリクル付露光原版を用いて、半導体ウエハを露光する工程を備えることを特徴とする半導体の製造方法。
- 露光の光源が、EUV光を発する露光光源である請求項26記載の半導体の製造方法。
- 請求項21記載のペリクル付露光原版を用いて、液晶用原版を露光する工程を備えることを特徴とする液晶表示板の製造方法。
- 露光の光源が、EUV光を発する露光光源である請求項28記載の液晶表示板の製造方法。
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| EP21744046.0A EP4095601A4 (en) | 2020-01-20 | 2021-01-15 | FILM FRAME, FILM, METHOD FOR INSPECTING FILM, ORIGINAL EXPOSURE PLATE ATTACHED TO FILM AND EXPOSURE METHOD, AND METHOD FOR MANUFACTURING SEMICONDUCTOR OR LIQUID CRYSTAL DISPLAY PANEL |
| US17/793,461 US20230117335A1 (en) | 2020-01-20 | 2021-01-15 | Pellicle Frame, Pellicle, Method for Inspecting Pellicle, Pellicle-Attached Exposure Original Plate and Exposure Method, and Method for Manufacturing Semiconductor or Liquid Crystal Display Board |
| JP2021573123A JPWO2021149602A1 (ja) | 2020-01-20 | 2021-01-15 | |
| CN202180008407.7A CN114930247B (zh) | 2020-01-20 | 2021-01-15 | 防护薄膜框架、防护薄膜组件以及防护薄膜组件的应用 |
| KR1020227027038A KR20220129014A (ko) | 2020-01-20 | 2021-01-15 | 펠리클 프레임, 펠리클, 펠리클의 검사 방법, 펠리클 부착 노광 원판 및 노광 방법, 그리고 반도체 또는 액정 표시판의 제조 방법 |
| JP2025073206A JP2025100921A (ja) | 2020-01-20 | 2025-04-25 | Euv用ペリクルフレーム及びその製造方法、並びにeuv用ペリクル |
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| JP6954498B1 (ja) * | 2020-02-04 | 2021-10-27 | 信越化学工業株式会社 | ペリクルフレーム、ペリクル、ペリクル付露光原版及び露光方法、並びに半導体装置又は液晶表示板の製造方法 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04291347A (ja) * | 1991-03-20 | 1992-10-15 | Nikon Corp | マスク保護装置、マスク及びマスク保護枠 |
| JPH05150443A (ja) * | 1991-11-27 | 1993-06-18 | Nikon Corp | 異物検査装置 |
| JPH09236908A (ja) * | 1996-02-29 | 1997-09-09 | Sky Alum Co Ltd | 耐光性に優れた低反射回路転写装置用防塵枠部材およびその製造方法 |
| JP2001249442A (ja) | 2000-03-07 | 2001-09-14 | Shin Etsu Chem Co Ltd | 半導体リソグラフィ用ペリクル |
| JP2004012597A (ja) * | 2002-06-04 | 2004-01-15 | Asahi Glass Co Ltd | ペリクル |
| JP2014109748A (ja) * | 2012-12-04 | 2014-06-12 | Nippon Light Metal Co Ltd | ペリクル枠及びその製造方法 |
| JP2017187547A (ja) * | 2016-04-01 | 2017-10-12 | レーザーテック株式会社 | Euvマスク検査装置、及びフォーカス調整方法 |
| JP2017211516A (ja) * | 2016-05-26 | 2017-11-30 | 信越化学工業株式会社 | ペリクル |
| JP2018513395A (ja) * | 2015-02-03 | 2018-05-24 | エーエスエムエル ネザーランズ ビー.ブイ. | マスクアセンブリ及び関連する方法 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05150442A (ja) * | 1991-11-27 | 1993-06-18 | Nikon Corp | 異物検査装置 |
| JP3388162B2 (ja) * | 1997-12-03 | 2003-03-17 | 信越化学工業株式会社 | リソグラフィー用ペリクルの製造方法 |
| TWI579145B (zh) * | 2010-04-13 | 2017-04-21 | 旭化成電子材料股份有限公司 | Self-supporting film, self-supporting structure, self-supporting film manufacturing method and protective film |
| JP6008784B2 (ja) * | 2013-04-15 | 2016-10-19 | 信越化学工業株式会社 | ペリクルフレーム及びその製作方法とペリクル |
| KR101707763B1 (ko) * | 2013-05-24 | 2017-02-16 | 미쯔이가가꾸가부시끼가이샤 | 펠리클 및 이것을 포함하는 euv 노광 장치 |
| SG11201701802SA (en) * | 2014-09-19 | 2017-04-27 | Mitsui Chemicals Inc | Pellicle, pellicle production method and exposure method using pellicle |
| JP6275270B2 (ja) * | 2014-09-19 | 2018-02-07 | 三井化学株式会社 | ペリクル、その製造方法及び露光方法 |
| JP6491472B2 (ja) * | 2014-12-25 | 2019-03-27 | 日本特殊陶業株式会社 | ペリクル枠およびペリクル枠の製造方法 |
| JP6551837B2 (ja) * | 2015-08-17 | 2019-07-31 | 三井化学株式会社 | ペリクルフレーム、及びこれを含むペリクル |
| JP2017083791A (ja) * | 2015-10-30 | 2017-05-18 | 三井化学株式会社 | ペリクル、ペリクルの製造方法及びペリクルを用いた露光方法 |
| JP6478283B2 (ja) * | 2015-12-24 | 2019-03-06 | 信越化学工業株式会社 | Euv露光用ペリクル |
| US10948816B2 (en) * | 2016-07-12 | 2021-03-16 | Nippon Light Metal Company, Ltd. | Pellicle frame and pellicle |
| JP6607574B2 (ja) * | 2016-08-24 | 2019-11-20 | 信越化学工業株式会社 | ペリクルフレーム及びペリクル |
| EP3639091A2 (en) * | 2017-06-15 | 2020-04-22 | ASML Netherlands B.V. | Pellicle and pellicle assembly |
| JP2019070745A (ja) * | 2017-10-10 | 2019-05-09 | 信越化学工業株式会社 | ペリクルフレーム及びペリクル |
| JP7139133B2 (ja) * | 2018-04-03 | 2022-09-20 | 信越化学工業株式会社 | ペリクルフレーム、ペリクル、及びペリクルフレームの製造方法 |
| TWM613929U (zh) * | 2020-01-20 | 2021-07-01 | 日商信越化學工業股份有限公司 | 防護薄膜框架、防護薄膜組件、帶防護薄膜組件的曝光原版及曝光系統、以及半導體或液晶顯示板的製造系統 |
-
2021
- 2021-01-15 TW TW110200539U patent/TWM613929U/zh unknown
- 2021-01-15 EP EP21744046.0A patent/EP4095601A4/en active Pending
- 2021-01-15 US US17/793,461 patent/US20230117335A1/en active Pending
- 2021-01-15 CN CN202120107916.2U patent/CN215416267U/zh active Active
- 2021-01-15 KR KR1020227027038A patent/KR20220129014A/ko active Pending
- 2021-01-15 WO PCT/JP2021/001196 patent/WO2021149602A1/ja not_active Ceased
- 2021-01-15 CN CN202180008407.7A patent/CN114930247B/zh active Active
- 2021-01-15 JP JP2021573123A patent/JPWO2021149602A1/ja active Pending
- 2021-01-15 TW TW110101697A patent/TW202147019A/zh unknown
-
2025
- 2025-04-25 JP JP2025073206A patent/JP2025100921A/ja active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04291347A (ja) * | 1991-03-20 | 1992-10-15 | Nikon Corp | マスク保護装置、マスク及びマスク保護枠 |
| JPH05150443A (ja) * | 1991-11-27 | 1993-06-18 | Nikon Corp | 異物検査装置 |
| JPH09236908A (ja) * | 1996-02-29 | 1997-09-09 | Sky Alum Co Ltd | 耐光性に優れた低反射回路転写装置用防塵枠部材およびその製造方法 |
| JP2001249442A (ja) | 2000-03-07 | 2001-09-14 | Shin Etsu Chem Co Ltd | 半導体リソグラフィ用ペリクル |
| JP2004012597A (ja) * | 2002-06-04 | 2004-01-15 | Asahi Glass Co Ltd | ペリクル |
| JP2014109748A (ja) * | 2012-12-04 | 2014-06-12 | Nippon Light Metal Co Ltd | ペリクル枠及びその製造方法 |
| JP2018513395A (ja) * | 2015-02-03 | 2018-05-24 | エーエスエムエル ネザーランズ ビー.ブイ. | マスクアセンブリ及び関連する方法 |
| JP2017187547A (ja) * | 2016-04-01 | 2017-10-12 | レーザーテック株式会社 | Euvマスク検査装置、及びフォーカス調整方法 |
| JP2017211516A (ja) * | 2016-05-26 | 2017-11-30 | 信越化学工業株式会社 | ペリクル |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4095601A4 |
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| EP4095601A1 (en) | 2022-11-30 |
| US20230117335A1 (en) | 2023-04-20 |
| CN215416267U (zh) | 2022-01-04 |
| TWM613929U (zh) | 2021-07-01 |
| TW202147019A (zh) | 2021-12-16 |
| KR20220129014A (ko) | 2022-09-22 |
| JP2025100921A (ja) | 2025-07-03 |
| JPWO2021149602A1 (ja) | 2021-07-29 |
| CN114930247B (zh) | 2025-10-03 |
| CN114930247A (zh) | 2022-08-19 |
| EP4095601A4 (en) | 2024-03-06 |
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