WO2012018048A1 - ナノインプリント用樹脂製モールドおよびその製造方法 - Google Patents
ナノインプリント用樹脂製モールドおよびその製造方法 Download PDFInfo
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- WO2012018048A1 WO2012018048A1 PCT/JP2011/067775 JP2011067775W WO2012018048A1 WO 2012018048 A1 WO2012018048 A1 WO 2012018048A1 JP 2011067775 W JP2011067775 W JP 2011067775W WO 2012018048 A1 WO2012018048 A1 WO 2012018048A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/40—Plastics, e.g. foam or rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/005—Surface shaping of articles, e.g. embossing; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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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
- 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
- G03F7/0002—Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
- B29C2033/426—Stampers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/022—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
- B29C2059/023—Microembossing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
Definitions
- the present invention relates to a resin mold for nanoimprinting and a manufacturing method thereof. More specifically, the present invention relates to a resin mold for nanoimprinting having an inorganic layer between a release agent layer and a resin layer, and a method for producing the same.
- the imprint technology is a technique in which a mold having a concavo-convex pattern is pressed against a liquid resin on a substrate and the mold pattern is transferred to the resin.
- Concavo-convex patterns exist from nanoscales of 10 nm level to about 100 ⁇ m, and are used in various fields such as semiconductor materials, optical materials, storage media, micromachines, biotechnology, and the environment.
- a mold having a predetermined shape formed on the surface thereof is pressed against a thermoplastic resin melted at a glass transition temperature or higher, and the surface shape of the mold is heat-imprinted on the thermoplastic resin and cooled.
- Examples include thermal imprint for removing the rear mold, and optical imprint for removing the mold after the same mold is brought into contact with the photocurable resin and the photocurable resin is cured by ultraviolet irradiation.
- quartz, silicon or the like is conventionally used in consideration of strength, hardness, workability, dimensional stability, etc., but these are easily damaged and expensive and take a long time to manufacture.
- a resin mother pattern is obtained using these quartz molds as a master mold, and a replica mold is produced based on the mother pattern to support mass production. Is planned.
- a resin mold is known from the viewpoint of versatility and cost.
- Examples of the resin to be imprinted include a copolymer of methyl methacrylate, at least one kind of alkyl (meth) acrylate having 2 to 10 carbon atoms in an alkyl residue, and glycidyl group-containing (meth) acrylate.
- a certain photocurable acrylic resin is known (for example, patent document 1).
- an active energy ray-curable resin of a glycidyl group-containing epoxy compound and (meth) acrylic acid is excellent in strength, adhesion and crack resistance (for example, Patent Document 2).
- These resins are obtained by curing a composition containing a compound having a glycidyl group as a monomer with active energy rays such as ultraviolet rays. During the reaction, a carboxylic acid or a hydroxyl group reacts with a glycidyl group, In the resin, the epoxy group opens to form a cured epoxy resin.
- a resin film is placed on the surface of the replica mold and pressed, and the uneven shape formed on the surface of the replica mold is transferred to the resin surface to form various optical devices. At this time, the resin is applied to the replica mold. In many cases, it is difficult to peel off the resin film due to the close contact of the film.
- a release agent layer is formed on the surface of the replica mold.
- This release agent layer also becomes a release agent layer for the resin film, and at the same time, a replica formed from a resin. Since it becomes a release agent layer for the mold, when transferring the unevenness formed on the replica mold to the resin film, the release agent layer is peeled off from the surface of the replica mold and the unevenness is formed on the resin film. May transfer to the surface.
- an oxide layer made of an inorganic oxide is formed on the surface of the replica mold to prevent the release agent layer from falling off the surface of the replica mold. Yes. Although it is possible to prevent the release agent layer from dropping from the oxide layer by forming the release agent layer via this oxide layer, the adhesion of the oxide film to the resin film is not necessarily good. I can't say that.
- the release agent layer and the oxide film are integrated, there is a problem that the release agent layer and the oxide film may move to the surface of the transferred resin film as a unit. .
- An object of the present invention is to provide a resin mold which has no transfer defect, is excellent in releasability from a resin to be imprinted, and does not cause a defect by imprinting. It is another object of the present invention to provide a resin mold in which peeling of the substrate and each layer does not occur during imprinting. Furthermore, it is an object to provide a flexible resin mold for nanoimprinting that can be used while being fixed to a roller or the like.
- the resin forming the resin mold to which the irregularities formed on the surface of the master mold are transferred has a backbone in which a monomer having an ethylenic double bond is (co) polymerized.
- a reactive monomer having an epoxy group as at least a part of the monomers constituting the main backbone of this resin, and reacting an ethylenic double bond without opening the epoxy group to form the main backbone It is characterized by becoming.
- the resin mold for nanoimprint comprising the resin, inorganic layer and release agent layer of the present invention can be used for a long time.
- the oxide layer is firmly bonded to the resin surface, the shape of the resin mold for nanoimprinting of the present invention is not easily broken.
- the resin mold for nanoimprinting of the present invention can be imprinted without transfer defects.
- it is a resin mold for nanoimprinting in which the adhesion between each layer is good, so that the resin to be imprinted and the resin for nanoimprinting after imprinting
- the mold releasability with the mold is good, and the mold release agent layer is not missing.
- the thickness of the release agent layer can be controlled, the release agent layer does not affect the edge accuracy.
- the resin mold for nanoimprinting of the present invention has good adhesion between the resin layer and the substrate and between the resin layer and the release agent layer by making the resin layer have a specific configuration. As a result, the resin mold for nanoimprinting of the present invention does not peel off the resin layer from the substrate and / or the release agent layer during imprinting, and can be suitably used for multiple imprinting. Further, the imprint does not cause defects such as cracks in the resin layer.
- the resin mold for nanoimprinting of the present invention uses a resin for the main body, and can be mass-produced at low cost.
- the resin mold for nanoimprinting of the present invention has a thickness of the inorganic layer below a certain level, it can be flexible depending on the structure of the mold, and can be used for imprinting in various forms such as rollers. Can do.
- FIG. 1 shows a resin mold for nanoimprinting of the present invention.
- FIG. 2 shows a method for producing a resin mold for nanoimprinting according to the present invention.
- FIG. 3 shows a method of using the resin mold for nanoimprinting of the present invention.
- FIG. 4 shows how to use the resin mold for roller nanoimprint.
- the resin mold for nanoimprinting of the present invention is a resin mold for nanoimprinting having a multilayer structure in which many different materials are laminated.
- the resin mold for nanoimprinting of the present invention has a substrate 4, a resin layer 3 formed on the substrate and having an uneven pattern on the surface, and at least the uneven pattern of the resin layer 3.
- the resin mold for nanoimprinting of the present invention is basically a resin that forms a resin mold to which the irregularities formed on the surface of the master are transferred, and a monomer having an ethylenic double bond is (co) polymerized.
- a reactive monomer having an epoxy group as at least a part of the monomer constituting the main resin, the main group is formed by reacting an ethylenic double bond without opening the epoxy group.
- the types of substrates constituting the resin mold for nanoimprinting of the present invention preferably include resin, glass, silicon, sapphire, gallium nitride, carbon, and silicon carbide.
- Examples of the resin used for the substrate include polyethylene terephthalate, polycarbonate, polymethyl methacrylate, polystyrene, cyclic polyolefin, polyimide, polysulfone, polyethersulfone, and polyethylene naphthalate.
- the resin used for the substrate may be in the form of a plate or in the form of a film.
- the plate shape include a polymethyl methacrylate plate, a polycarbonate plate, and a polycycloolefin plate.
- the film shape include a polyethylene terephthalate film, a polycarbonate film, and a polyester. Examples thereof include a film, a polyolefin film, a polyimide film, a polysulfone film, a polyether sulfone film, and a polyethylene naphthalate film.
- the thickness of the plate-shaped substrate is usually in the range of 0.1 to 100 mm.
- the flexibility of the resulting resin mold for nanoimprinting is somewhat lowered, but the mold itself is less likely to lose its shape.
- the thickness of the film-like substrate is usually in the range of 30 to 300 ⁇ m.
- the resin mold for nanoimprinting has an appropriate flexibility. For example, when the mold is wound around a roll, such a film-like substrate is preferably used.
- the resin mold for nanoimprinting of the present invention has a resin layer on the surface of the substrate as described above.
- This resin layer is a co-polymer of a monomer having an ethylenic double bond that constitutes the main backbone of the resin and a monomer having an ethylenic double bond and an epoxy group (epoxy group-containing monomer). It is a coalescence.
- the resin forming the resin layer is usually 1 to 50% by weight of the structural unit derived from the epoxy group-containing unsaturated monomer when the total of all the component units forming the resin layer is 100% by weight. It is preferably contained in an amount of 20 to 40% by weight.
- the epoxy value of the resin is usually 7.0 ⁇ 10 ⁇ 4 to 4.0 ⁇ 10 ⁇ 2 , preferably 1.4 It is in the range of ⁇ 10 ⁇ 2 to 2.8 ⁇ 10 ⁇ 2 .
- the resin forming the resin mold for nanoimprinting of the present invention has an epoxy value, and it is necessary not to open the epoxy group when the resin is copolymerized.
- the affinity between the resin layer and the release agent layer is low, and the release agent layer falls off in a short time, and the number of shots used for this resin mold for nanoimprint is small. It was necessary to frequently change the resin mold for nanoimprinting.
- an inorganic layer has been formed between the release agent layer and the resin layer. By interposing this inorganic layer, the affinity between the release agent layer and the inorganic layer is increased.
- the resin that forms the resin layer examples include the use of a monomer that forms a thermoplastic resin, a thermosetting resin, or a photocurable resin.
- a resin that forms such a resin layer examples thereof include acrylic resins, styrene resins, olefin resins, and acrylic urethane resins. More preferably, polymethyl methacrylate, a cycloolefin resin, and a styrene resin are mentioned.
- the monomer that forms such a resin is a monomer that does not contain a group having reactivity with the epoxy group-containing monomer.
- examples of (meth) acrylic monomers used in the present invention include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) ) Acrylate, t-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, and alkyl (meth) acrylate such as isobornyl (meth) acrylate.
- examples of the styrene monomer include styrene and ⁇ -alkylstyrene.
- examples of the olefin monomer include linear olefins having 2 to 20 carbon atoms such as ethylene, propylene, and hexene, and cyclic olefins. Such a monomer reacts with the ethylenic double bond of the epoxy group-containing monomer to form the resin backbone that forms the resin layer in the present invention, and at this time, the epoxy group remains without being opened. .
- the resin layer of the present invention is a copolymer of a monomer that forms the resin as described above and an epoxy group-containing monomer.
- the epoxy group-containing monomer has an epoxy group and a polymerizable ethylene group that is copolymerized with the monomer constituting the resin.
- Examples of such an epoxy group-containing monomer include glycidyl methacrylate and 4-hydroxybutyl glycidyl ether.
- the monomer containing no epoxy group as described above and the epoxy group-containing monomer are usually reacted in a weight ratio of 99: 1 to 40:60, preferably 80:20 to 60:40.
- the main chain of the resin can be constituted by selectively reacting the ethylenic double bond without opening the epoxy group. At this time, since the ring-opening reaction of the epoxy group hardly proceeds, the epoxy value of the resin thus obtained can be easily calculated from the amount of the monomer used.
- the epoxy group exists as a side chain with respect to the main structure of the resin forming the resin layer, and the epoxy group is not incorporated into the main structure of the resin.
- a catalyst for allowing ethylenic double bonds to react with each other usually by photopolymerization can be used.
- this photopolymerization reaction can be performed in the presence or absence of a reaction solvent.
- the light energy to be irradiated is usually 5 to 100 mW / sec, preferably 10 to 80 mW / sec.
- the resin layer as described above has a main structure in which ethylenic double bonds are bonded to each other, and the portion using an epoxy group-containing monomer has a ring opening. Not present as a side chain.
- the epoxy value of the resin layer forming resin at this time is a value corresponding to the amount of the epoxy group-containing monomer used as described above.
- the inorganic layer is provided between the resin layer having an epoxy group that is not ring-opened and the release agent layer, the affinity of the epoxy group to the inorganic layer is high. It becomes difficult to drop off. Furthermore, since the inorganic layer and the release agent layer have an essentially high affinity, delamination between the inorganic layer and the release agent layer hardly occurs.
- the resin mold for nanoimprinting of the present invention is one mold for resin imprinting for nanoimprinting, even if imprinting is repeated, the release agent layer or the release agent layer and the inorganic material layer are not easily removed from the resin layer.
- the number of times of imprinting can be performed using a conventional nanoimprinting resin mold, and it is extremely rare that the number of times of transfer exceeds 20 when one nanoimprinting resin mold is used.
- defects in the resin mold for nanoimprinting for example, a decrease in contact angle with water, a lack of a transfer pattern, etc. Almost no.
- the resin mold for nanoimprinting of the present invention has an advantage that cracks and the like hardly occur in the inorganic layer as well as the resin layer by forming the resin layer as described above.
- the thickness of the resin layer having the above structure is usually 15 nm to 50 ⁇ m, preferably 100 nm to 5 ⁇ m. When the thickness of the resin layer is in the above range, the resin layer has strength sufficient to withstand stamping, and has good smoothness and easy handling.
- the thickness of the resin layer refers to the distance between the bottom surface of the resin layer and the surface with the highest unevenness on the surface.
- the resin layer has a desired uneven shape on its surface.
- the desired shape is usually a pattern that is uneven and repeats at a constant period. That is, it is a concavo-convex pattern, preferably a concavo-convex pattern with a period of 10 nm to 50 ⁇ m, a depth of 10 nm to 50 ⁇ m, and a transfer surface of 1.0 to 1.0 ⁇ 10 6 mm 2 .
- irregular shape examples include moth eye, line, cylinder, monolith, cone, polygonal pyramid, and microlens.
- An inorganic layer is formed on the surface of the resin layer on which the uneven pattern is formed as described above.
- the inorganic layer is formed from an inorganic material or an inorganic oxide, and is preferably formed from an inorganic oxide. More preferable examples of the inorganic oxide include SiO 2 , ZrO 2 , ZnO, Ta 2 O 5 , HfO 2 , ITO, FTO, and TiO 2 , and more preferably SiO 2 , ZrO 2 , Ta 2 O 5. , HfO 2 , ITO, and TiO 2 . More preferable examples of the inorganic substance include SiO 2 and TiO 2 . These oxides can be used alone or in combination.
- the inorganic layer can be formed by various methods, but it is preferable to perform vapor deposition such as vacuum deposition, CVD, sputtering, etc. using a metal corresponding to the inorganic material as a target. Oxidized during such vapor deposition, in most cases, precipitates on the surface of the resin layer as an oxide, carbide or nitride.
- the inorganic layer when forming the inorganic layer, it is preferable to deposit the inorganic substance while rotating and revolving the resin layer as the adherend, and depositing the inorganic substance while reversing the rotation and revolution at regular intervals. Is preferred.
- an inorganic substance layer with higher uniformity can be formed by precipitating an inorganic substance while rotating and revolving.
- the inorganic layer formed in this way is an epoxy that is not ring-opened and exists as a side chain of the resin that forms the resin layer, with the inorganic material penetrating all the way to the resin molecule gaps on the surface of the resin layer. It becomes mixed with the base and the affinity between the resin layer and the inorganic layer is further improved.
- the thickness of the inorganic layer formed as described above is usually 0.5 to 100 nm, preferably 0.5 to 20 nm, more preferably 1 to 10 nm. If the thickness of the inorganic layer is below the above level, the effect of the inorganic layer to improve the affinity between the release agent layer and the resin layer may not be exhibited, and the effect of maintaining the surface form of the resin layer may also be achieved. May not develop. Moreover, when it deviates from the said upper limit and is too thick, the uneven
- the inorganic layer formed in the resin mold for nanoimprinting of the present invention is formed with a uniform thickness on the resin layer, at least on the surface having the concavo-convex pattern of the resin layer.
- the uniform thickness means a substantially uniform thickness, preferably a uniform thickness with a standard deviation of 0.1 to 15. Therefore, the surface of the inorganic layer maintains the resin layer surface shape.
- a release agent layer is formed on the surface of the inorganic layer formed as described above.
- the mold release agent is a component that lowers the surface energy of the mold release surface and facilitates mold release.
- the release agent layer is composed of a release agent, preferably a fluorine-based silane coupling agent, a perfluoro compound having an amino group or a carboxyl group, a perfluoroether compound having an amino group or a carboxyl group, and more preferably fluorine. It consists of at least 1 sort (s) chosen from the group which consists of a silane coupling agent. At least a part of such a release agent layer is coupled to the lower inorganic layer to develop a high affinity between the inorganic layer and the release agent layer.
- a release agent preferably a fluorine-based silane coupling agent, a perfluoro compound having an amino group or a carboxyl group, a perfluoroether compound having an amino group or a carboxyl group, and more preferably fluorine. It consists of at least 1 sort (s) chosen from the group which consists of a silane coupling agent. At least a part of such a release agent layer is coupled to the lower inorgan
- the thickness of such a release agent layer is usually 0.5 to 20 nm, preferably 0.5 to 15 nm, and more preferably 0.5 to 10 nm.
- the release agent layer is formed with a uniform thickness on the inorganic layer, at least on the surface having the uneven pattern of the inorganic layer.
- the uniform thickness means a substantially uniform thickness, preferably a uniform thickness with a standard deviation of 0.1 to 10. Therefore, the surface of the release agent layer maintains the resin layer surface shape.
- the release agent layer having such a structure has a contact angle with pure water on the surface of the release agent layer of usually 100 ° or more, preferably 100 to 130 °, more preferably 100 to 120 °, which is very surface.
- the tension is small. That is, when the contact angle is in the above range, the wettability with respect to the liquid is low, so when the liquid imprint resin is applied to the surface of the release agent layer, the flow of the resin on the surface of the release agent layer is suppressed.
- the imprinted resin can be easily released from the surface of the release agent layer. Furthermore, even if imprinting is repeated, the fluctuation range of the contact angle with respect to the pure water is small, and this resin mold can be used for a long time.
- the surface of the resin mold for nanoimprinting of the present invention having the layered structure as described above is formed with a concavo-convex pattern that is repeated at a constant cycle.
- This pattern is preferably formed with a period of 10 nm to 50 ⁇ m.
- the resin mold for nanoimprinting of the present invention is preferably used for semiconductor materials, media, optical elements, etc.
- the period is 200 nm to 20 ⁇ m, it is preferably used for optical materials such as prisms and microlenses.
- the depth of the pattern is preferably 50 nm to 1 ⁇ m, more preferably 100 to 600 nm.
- the resin film thickness is less than 1 times the shape height, the shape height of the master mold is not reflected in thermal imprinting at the time of resin mold creation.
- the ratio is 15 times or more, in thermal imprinting when a resin mold for nanoimprinting is created, the resin in the transfer portion flows out by a press (usually 20 MPa), and protrusions due to excess resin are formed on the side of the master mold. As a result, it becomes difficult to form a resin mold having a uniform transfer surface.
- the area of the transfer surface is not particularly limited, but usually about 1.0 to 1.0 ⁇ 10 6 mm 2 is suitable for imprint work.
- the specific shape of the unevenness is not particularly limited, and examples thereof include moth eyes, lines, cylinders, monoliths, cones, polygonal cones, and microlenses.
- Manufacturing method of resin mold for nanoimprint The resin mold for nanoimprint of the present invention is: (I) a step of applying an active energy ray-curable composition containing 1 to 50 parts by weight of an epoxy group-containing unsaturated compound (100 parts by weight of the entire composition) on the substrate; (II) A mold is brought into contact with the active energy ray-curable composition, the active energy ray is irradiated, an uneven pattern formed on the surface of the mold is transferred, and an epoxy of the active energy ray-curable composition A step of forming a resin layer having an epoxy value change amount of 15% or less based on the value; (III) a step of forming an inorganic layer having a uniform thickness on a surface having at least a concavo-convex pattern of the resin layer; (IV) It can manufacture by implementing the process
- a substrate 4 is prepared.
- a resin layer 3 is formed on the substrate 4.
- the inorganic layer 2 having a uniform thickness is formed on the surface of the resin layer 3 having at least the uneven pattern.
- a release agent layer 1 having a uniform thickness is formed on at least the surface of the inorganic layer 2 having a concavo-convex pattern.
- Step (I) A step of applying an active energy ray-curable composition containing 1 to 50 parts by weight of an epoxy group-containing unsaturated compound (100 parts by weight of the entire composition) on a substrate>
- the active energy ray-curable composition contains 1 to 50 parts by weight of an epoxy group-containing unsaturated compound, preferably 20 to 40 parts by weight (the total composition is 100 parts by weight), preferably (meth) acrylate. Containing.
- the content of (meth) acrylate is preferably 50 to 99 parts by weight, more preferably 60 to 80 parts by weight.
- the composition contains the epoxy group-containing unsaturated compound within the above range, the adhesion between the resin layer and the substrate and the adhesion between the resin layer and the release agent layer are good. Examples of the epoxy-containing unsaturated compound and (meth) acrylate are as described above.
- the active energy ray-curable composition does not substantially contain a compound capable of reacting with an epoxy group, such as a crosslinking agent, a carboxyl group-containing compound, and a cationic or anionic initiator. Since the active energy ray-curable composition does not contain these, the epoxy group in the epoxy group-containing unsaturated compound remains unopened in the step (II). As a result, it is considered that the adhesion between the resin layer and the substrate and the adhesion between the resin layer and the release agent layer are improved.
- “substantially not contained” means that when the total composition is 100 parts by weight, the resin contains 0 to 10 parts by weight, preferably 0 to 3 parts by weight of structural units derived from a compound capable of reacting with an epoxy group. It means containing 0 part by weight, more preferably 0 part by weight.
- the active energy ray-curable composition is applied onto the substrate by spin coating, spray coating, bar coating, lip coating, slit coating, or the like. Details of the substrate are as described above.
- Step (II) A mold is brought into contact with the active energy ray-curable composition, the active energy ray is irradiated, the uneven pattern formed on the surface of the mold is transferred, and the active energy ray-curable composition Step of Forming Resin Layer with Change in Epoxy Value Based on Epoxy Value of 15% or Less>
- a mold is brought into contact with the active energy ray-curable composition, and the active energy ray is irradiated to cause the composition to react to form a resin layer having the mold unevenness transferred on the surface.
- the surface of the active energy ray-curable composition is irradiated with active energy rays by pressing a mold made of quartz, metal, silicon, or the like used for normal imprinting.
- the surface shape (pattern) of the mold is not particularly limited, but a mold having a period of 10 nm to 50 ⁇ m, a depth of 10 nm to 50 ⁇ m, and a transfer surface of 1.0 to 1.0 ⁇ 10 6 mm 2 is preferable, a period of 20 nm to 20 ⁇ m, a depth More preferably, the thickness is 50 nm to 1 ⁇ m and the transfer surface is 1.0 to 0.25 ⁇ 10 6 mm 2 . This is because a sufficient pattern can be formed on the resin layer.
- the mold preferably has a strength of 0.1 to 10 MPa, abuts against the active energy ray-curable composition, and irradiates the active energy ray while maintaining the mold for 0 to 120 seconds.
- Activating energy rays include X-rays, ultraviolet rays, visible rays, infrared rays and electron beams.
- the irradiation conditions of the active energy ray are preferably 10 to 80 mW / cm 2 and 1 to 240 seconds.
- the epoxy group-containing unsaturated compound is copolymerized with another monomer through an ethylenic double bond without ring opening.
- the resin layer does not have a crosslinked structure derived from the ring opening of the epoxy group, the resin constituting the resin layer is completely dissolved when dissolved in toluene at a solid content of 10% by weight.
- the resin constituting the resin layer can be calculated from the blending ratio of the epoxy group-containing monomer and the other monomer, and the epoxy value of the active energy ray-curable composition can be calculated from the charged amount.
- the epoxy value obtained is the epoxy value of the resin composition, and there is almost no error.
- the change in the epoxy value indicates the ratio of the epoxy groups in the resin layer that have opened, and is represented by the following formula (1).
- Epoxy value 100 / epoxy equivalent (1)
- the amount of change in the epoxy value is a measure of the progress of the crosslinking reaction in the active energy ray curing reaction, but when the active energy ray is used and a monomer having a group capable of reacting with an epoxy group is not used as described above.
- the epoxy value is a value that represents the epoxy equivalent in 100 g of resin, and is approximately the same as the theoretical value calculated from the charged amount of the epoxy group-containing monomer.
- the unpaired electron pair of oxygen atoms in the epoxy ring remaining after the resin layer is formed by this process is not opened, but the resin plate, resin film, glass, inorganic, inorganic used in the substrate or inorganic layer Bonding power develops between oxides and the like, and the adhesiveness between the resin layer and the substrate and the adhesiveness between the resin layer and the inorganic layer are excellent.
- the amount of change in the epoxy value is such that the active energy ray-curable composition used in step (I) can react with an epoxy group, such as a crosslinking agent, a carboxyl group-containing compound, and a cationic system and an anion. Contains substantially no system initiator or the like.
- the inorganic substance or the inorganic oxide is deposited or sputtered on the surface having at least the shape of the resin layer while performing the usual thin film forming means such as vapor deposition or sputtering, and preferably 0.5 to 100 nm. More preferably, an inorganic or inorganic oxide thin film having a uniform thickness of 0.5 to 20 nm, most preferably 1 to 10 nm is formed. In this way, by rotating and revolving, and by forming the inorganic layer while changing the direction of rotation every predetermined time, the thickness of the formed inorganic layer becomes uniform, and the uneven shape formed in the resin layer Distortion can also be corrected.
- a normal coating operation such as dip coating, spin coating, vapor deposition, or spraying is performed on the release agent on the surface of at least the shape of the inorganic layer.
- a mold release agent melt dissolves may be used for a mold release agent.
- the surface of the release agent coating film is further rinsed with a fluorine-based solvent such as perfluorohexane.
- a fluorine-based solvent such as perfluorohexane.
- the rinsing treatment is preferable in order to obtain the uniformity of the thickness of the release agent layer.
- the uniformity of the thickness of the release agent layer can be maintained by the operation of applying the release agent, it may be omitted. Good.
- a release agent layer of preferably 0.5 to 20 nm, more preferably 0.5 to 15 nm, and most preferably 0.5 to 10 nm is formed.
- the resin mold for nanoimprint of the present invention is suitably used for imprinting a thermoplastic resin, a thermosetting resin, or a photocurable resin.
- the resin mold for nanoimprinting of the present invention is suitably used for imprinting a photocurable resin. Therefore, in order to complete the photo-curing reaction more efficiently, it is desirable that the resin mold for nanoimprinting has high transparency, and usually a resin having a light transmittance of 80% or more is used. To do.
- the epoxy group contained in the resin layer of the resin mold for nanoimprinting remains as it is without ring opening, and no crosslinked structure is formed. Therefore, the resin does not become cloudy, and the light transmittance is 80. % Of good transparency.
- the resin mold for nanoimprinting of the present invention is brought into contact with the surface of the resin 5.
- the resin mold for nanoimprinting of the present invention is peeled off to obtain a resin 5 having a shape on the surface.
- the resin 5 to be imprinted is usually a thermoplastic resin, a thermosetting resin, or a photocurable resin, and is usually on the substrate 6.
- the substrate 6 can be used without limitation as long as it is a substrate used for normal imprinting, and examples thereof include resin, glass, silicon, sapphire, gallium nitride, carbon, and silicon carbide.
- thermoplastic resin or a thermosetting resin an operation that is used for thermal imprinting of a normal thermoplastic resin or thermosetting resin can be performed.
- a glass transition temperature ( Tg) A mold is brought into contact with a resin heated to a temperature equal to or higher than that at a press pressure of 0.5 to 50 MPa and pressed by holding for 10 to 600 seconds.
- thermoplastic resin and the thermosetting resin general thermoplastic resins and thermosetting resins can be used without limitation.
- a photocurable resin When a photocurable resin is used, the operation used for normal photoimprinting of a photocurable resin can be performed.
- a mold is applied to the resin at a press pressure of 0.1 to 10 MPa. It is preferable to irradiate with active energy rays such as ultraviolet irradiation after pressing by holding for 0 to 600 seconds and pressing.
- the resin mold for nanoimprinting of the present invention can be suitably used.
- a flexible mode such as a resin mold for nanoimprinting using a film or the like for a substrate can be suitably used for photoimprinting of a photocurable resin.
- photocurable resin a general photocurable resin can be used without limitation.
- the above description shows an example of using the resin mold for nanoimprinting of the present invention using stamping.
- the resin mold for nanoimprinting of the present invention is, for example, a resin for nanoimprinting wound around a roller as shown below.
- a mold roller and a feed roller paired therewith are prepared, and a resin film is passed between the resin mold roller for nanoimprint and the feed roller as shown in FIG. 4, and active energy rays such as ultraviolet rays are applied to the resin film. Irradiation can also be used to transfer and fix the uneven shape formed on the resin mold to the resin film.
- this method will be described.
- the resin mold for nanoimprinting of the present invention can also be used as a roller-type resin mold for nanoimprinting that is wound around a roller or the like.
- roller-type resin mold for nanoimprinting is suitably used for imprinting a photocurable resin.
- the step of contacting the resin mold for nanoimprinting on the resin surface is wound around a roller. It is comprised by pressing the attached resin mold for nanoimprinting on the resin surface and irradiating with ultraviolet rays.
- the resin mold for nanoimprinting of the present invention is used.
- the roller-type resin mold for nanoimprint is a resin mold for nanoimprint, in which a mold having the same configuration as that of the above-mentioned resin mold for nanoimprint is wound around a roller or the like with the uneven surface facing outward. It is.
- roller type nanoimprint resin mold As a preferable configuration of the roller type nanoimprint resin mold, a four-layer mold having a flexible thickness of 30 to 300 ⁇ m is preferable.
- the resin mold for nanoimprinting of the present invention is used for imprinting a thermoplastic resin, a thermosetting resin, or a photocurable resin.
- Each product obtained from imprinted resin can be used for electronic materials such as semiconductor materials, optical elements, prisms, microlenses, storage media, holography, micromachines, biotechnology, environment, semiconductors, LEDs, hard disks, etc. .
- the period of the surface pattern shape is 20 nm to 500 nm, it is suitably used for semiconductor materials, media, optical elements, etc., and when the period of the pattern shape of the surface is 200 nm to 20 ⁇ m, It is suitably used for lenses and the like.
- the resin mold for nanoimprinting of the present invention is a roller-type resin mold for nanoimprinting, continuous molding is possible, and it is preferably used for optical functional films such as microlenses and antireflection films.
- the thickness of the resin layer was defined between the bottom surface of the resin layer and the highest surface among the surfaces having the uneven pattern.
- ⁇ Film thickness / shape height> This is a value obtained by dividing the thickness of the resin layer (indicated by Y in FIG. 1) by the shape height (indicated by X in FIG. 1).
- Curing shrinkage ((Concavity or convex width of transfer product ⁇ Convex or concave width of master mold) / Convex or concave width of master mold) ⁇ 100 ⁇ Curing stability> The presence or absence of tackiness on the surface of the cured product after curing was confirmed and evaluated according to the following criteria.
- ⁇ Thickness of release agent layer> Using a thin film measuring apparatus (model: manufactured by F20 Filmetrics), five arbitrary points in the surface were measured, and the average was taken as the thickness of the release agent layer. The thickness uniformity was confirmed by the standard deviation of the above five points.
- ⁇ Surface shape (pattern)> The period and line width were evaluated by SEM (S-4800 manufactured by Hitachi High-Tech Co., Ltd.), and the depth (height) was evaluated by AFM (L-trace manufactured by SII Nanotechnology).
- ⁇ There is no unevenness or undulation of 100 nm or more.
- ⁇ Crack> The presence or absence of cracks in the resin mold for nanoimprint after the transfer was observed using an optical microscope (product name: LV-100, manufactured by Nikon Corporation) (20x objective) and evaluated according to the following criteria.
- ⁇ 20 times or less.
- a polymer was prepared by irradiating with UV light having a wavelength of 365 nm for 4 minutes. The results of attempts to dissolve this polymer in toluene at a solid content of 10% by weight were evaluated according to the following criteria.
- ⁇ Epoxy value> It shows by the gram equivalent number (equivalent / 100g) of the epoxy group contained in 100g of samples.
- the epoxy value was measured in the same manner for a 0.5 g sample of a solution obtained by dissolving the monomer mixture before polymerization in toluene at a solid content of 10% by weight.
- Example 1 Formation of Resin Layer A photocurable resin liquid in which 75 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 10 parts by weight of glycidyl methacrylate (GMA) are mixed is polyethylene. After spin coating on a terephthalate (PET: 0.125 mm thick) film to a film thickness of 1000 nm, a nickel mold (transfer surface 70 mm ⁇ , period 350 nm, depth 350 nm) with moth-eye structure irregularities on the surface was applied.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- the mold After pressing at 0.4 MPa and curing the resin film by UV irradiation (10 mW / cm 2 , 1 minute), the mold was released to obtain a resin sheet having a shape.
- the ratio of the resin film thickness to the shape height at this time was 6.0.
- a laminate of the inorganic layer, the photocurable resin layer and the substrate obtained in (2) is used as a perfluoro fluorine release agent (trade name: OPTOOL DSX Daikin Industries (The product was soaked for 1 minute, and then left to stand in a humid heat environment of 70 ° C. and 90% RH for 1 hour. Thereafter, it was rinsed with a fluorinated solvent (trade name: HD-TH Harves Co., Ltd.) and allowed to stand in an environment of 23 ° C. and 65% RH for 24 hours to complete the treatment of the release agent layer. The thickness was 3 nm.
- the shape portion had no defects or shape changes (transfer surface 70 mm ⁇ , period 350 nm, depth 350 nm).
- the following imprinting was performed using the manufactured resin mold for nanoimprinting.
- Photo-nanoimprint using a resin mold for nanoimprints Photo-curable resin (trade name: PAK-02, manufactured by Toyo Gosei Co., Ltd.) is 0.2 on the resin mold for nanoimprints obtained in (3). and milliliters dropwise, covered with a polycarbonate film (trade name LEXAN by Asahi Glass Co.) thereon, ultraviolet radiation after pressing 2 min at 0.4MPa using photo-nanoimprint apparatus (manufactured by engineering systems, Inc.) (10 mW / cm 2) 2 Went for a minute. Thereafter, the resin mold for nanoimprinting was removed, and it was confirmed that the mold had no transfer defects.
- Photo-curable resin trade name: PAK-02, manufactured by Toyo Gosei Co., Ltd.
- PAK-02 manufactured by Toyo Gosei Co., Ltd.
- Example 1 was the same as Example 1 except that 80 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 5 parts by weight of glycidyl methacrylate (GMA) were used. Thus, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 1 was the same as Example 1 except that 65 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 20 parts by weight of glycidyl methacrylate (GMA) were used. Thus, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 4 In Example 1, 75 parts by weight of methyl methacrylate (MMA) was used instead of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 20 parts by weight of glycidyl methacrylate (GMA). Except for the above, a resin mold for nanoimprinting was produced in the same manner as in Example 1. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- MMA methyl methacrylate
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 1 was the same as Example 1 except that 30 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 45 parts by weight of glycidyl methacrylate (GMA) were used. Thus, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 1 was the same as Example 1 except that 25 parts by weight of isobornyl acrylate (IBXA), 5 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 70 parts by weight of glycidyl methacrylate (GMA) were used. Thus, a resin mold for nanoimprinting was produced.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 1 was the same as Example 1 except that 15 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 70 parts by weight of glycidyl methacrylate (GMA) were used. Thus, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 3 In Example 1, except that isobornyl acrylate (IBXA) was 84.5 parts by weight, dipentaerythritol hexaacrylate (DPHA) was 15 parts by weight, and glycidyl methacrylate (GMA) was 0.5 parts by weight.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 4 In Example 1, 70 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 15 parts by weight of phenoxyethyl acrylate (POA) instead of glycidyl methacrylate (GMA) Except for the above, a resin mold for nanoimprinting was produced in the same manner as in Example 1. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- POA phenoxyethyl acrylate
- GMA glycidyl methacrylate
- Example 5 In Example 1, 70 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 15 parts by weight of lauryl acrylate (LA) instead of glycidyl methacrylate (GMA) In the same manner as in Example 1, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- LA lauryl acrylate
- GMA lauryl acrylate
- Example 1 was the same as Example 1 except that 50 parts by weight of isobornyl acrylate (IBXA), 50 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 0 part by weight of glycidyl methacrylate (GMA) were used. Thus, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 7 In Example 1, 75 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 10 parts by weight of acrylic acid (AA) instead of glycidyl methacrylate (GMA) In the same manner as in Example 1, a resin mold for nanoimprinting was produced.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- AA acrylic acid
- GMA glycidyl methacrylate
- Example 8 In Example 1, 75 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 10 parts by weight of 4-hydroxybutyl acrylate (4HBA) instead of glycidyl methacrylate (GMA) Except that, a resin mold for nanoimprinting was produced in the same manner as in Example 1. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 2 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- 4HBA 4-hydroxybutyl acrylate
- GMA glycidyl methacrylate
- Example 9 In Example 1, 75 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), and 10 parts by weight of dimethylaminoethyl acrylate (DMAEA) instead of glycidyl methacrylate (GMA) Except that, a resin mold for nanoimprinting was produced in the same manner as in Example 1. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 2 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- DAEA dimethylaminoethyl acrylate
- GMA glycidyl methacrylate
- Example 10 In Example 1, 75 parts by weight of isobornyl acrylate (IBXA), 15 parts by weight of dipentaerythritol hexaacrylate (DPHA), 5 parts by weight of glycidyl methacrylate (GMA), and 5 parts by weight of acrylic acid (AA) were used. Except for the above, a resin mold for nanoimprinting was produced in the same manner as in Example 1. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 2 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- AA acrylic acid
- Example 11 In Example 1, except that 100 parts by weight of dimethylsiloxane (PDMS) was used instead of isobornyl acrylate (IBXA), dipentaerythritol hexaacrylate (DPHA) and glycidyl methacrylate (GMA), the same as Example 1 Thus, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- PDMS dimethylsiloxane
- IBXA isobornyl acrylate
- DPHA dipentaerythritol hexaacrylate
- GMA glycidyl methacrylate
- Example 12 In Example 1, without using isobornyl acrylate (IBXA) and glycidyl methacrylate (GMA), 60 parts by weight of dipentaerythritol hexaacrylate (DPHA) and 40 parts by weight of neopentyl glycol acrylate (A-NPG) A resin mold for nanoimprinting was produced in the same manner as in Example 1 except that. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 1 shows the obtained resin mold for nanoimprinting and imprinting results.
- IBXA isobornyl acrylate
- GMA glycidyl methacrylate
- DPHA dipentaerythritol hexaacrylate
- A-NPG neopentyl glycol acrylate
- Example 6 In Example 1 (3), except that the master mold was changed to a nickel mold (transfer surface 25 mm ⁇ , hole diameter 165 nm, period 450 nm, depth 165 nm, cylindrical shape) with a cylindrical structure on the surface, In the same manner as in Example 1, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 3 shows the obtained resin mold for nanoimprinting and imprinting results.
- Example 7 In Example 1, (3), except that the master mold was changed to a nickel mold (transfer surface 35 mm ⁇ , 75 nm L / S, period 150 nm, depth 150 nm, linear shape) having a linear structure on the surface. In the same manner as in Example 1, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 3 shows the obtained resin mold for nanoimprinting and imprinting results.
- Example 8 In Example 1, except that the coating amount of the photocurable resin liquid on polyethylene terephthalate (PET) was 1800 nm, and the ratio of the resin film thickness to the shape height was 5.1. In the same manner as in Example 1, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 3 shows the obtained resin mold for nanoimprinting and imprinting results.
- PET polyethylene terephthalate
- Example 9 In Example 1, except that the coating amount of the photocurable resin liquid onto polyethylene terephthalate (PET) was set to a film thickness of 3500 nm, and the ratio of the resin film thickness to the shape height was set to 10.0. In the same manner as in Example 1, a resin mold for nanoimprinting was produced. Furthermore, imprinting was performed in the same manner as in Example 1 using the obtained resin mold for nanoimprinting. Table 3 shows the obtained resin mold for nanoimprinting and imprinting results.
- PET polyethylene terephthalate
- Polycarbonate film (lexan film thickness: 0.12 mm) with a photo-curing resin (trade name: PAK-02, manufactured by Toyo Gosei Kogyo Co., Ltd.) wrapped around a 6-inch roll and the resin mold for nanoimprint obtained in Example 1
- the line was moved with a pressure of 1.0 MPa on the product (feed speed: 0.75 mm / sec). Thereafter, ultraviolet irradiation (80 mW / cm 2 ) was performed while moving the line to cure the resin. Thereafter, the resin mold for nanoimprinting was removed from the roll. It was confirmed that the mold had no defects such as dropping of the release agent layer. Table 4 shows the imprint results.
- Example 2 Nanoimprinting in the same manner as in Example 1 except that the pressing pressure of the nickel mold was set to 0.8 MPa and UV irradiation for curing the resin film was performed at 10 mW / cm 2 for 10 seconds in Example 1 (1). A resin mold was produced. The shape of the resin mold for nanoimprint obtained is shown in Table 5.
- Example 3 A resin mold for nanoimprinting was produced in the same manner as in Example 1 except that UV irradiation for curing the resin film was performed at 50 mW / cm 2 for 2 seconds in Example 1 (1).
- the shape of the resin mold for nanoimprint obtained is shown in Table 5.
- Example 4 Resin for nanoimprinting in the same manner as in Example 1, except that in Example 1 (1), the pressing pressure of the nickel mold was 3 MPa, and UV irradiation for curing the resin film was performed at 10 mW / cm 2 for 10 seconds. A mold was produced. The shape of the resin mold for nanoimprint obtained is shown in Table 5.
- IBXA isobornyl acrylate
- MMA methyl methacrylate
- POA phenoxyethyl acrylate
- LA lauryl acrylate
- A-NPG Neopentyl glycol acrylate
- AA acrylic acid
- 4HBA 4-hydroxybutyl acrylate
- DMAEA dimethylaminoethyl acrylate
- GMA glycidyl methacrylate
- PDMS polydimethylsiloxane
- DPHA Dipentaerythritol hexaacrylate
- DSX Fluorine-based mold release agent From Examples 1 to 5, when the composition contains an epoxy group-containing unsaturated compound within the scope of the present invention, defects in the resin mold for nanoimprint and transfer defects It can be seen that a resin mold for nanoimprinting is obtained.
- Comparative Examples 1 to 9, 11, and 12 indicate that if the composition does not contain an epoxy group-containing unsaturated compound within the scope of the present invention, defects in the resin mold for nanoimprint and / or transfer defects occur.
- Comparative Examples 4 and 5 a compound having high crystallinity was used instead of the epoxy group-containing unsaturated compound, and in Comparative Example 6, a polyfunctional compound was used instead of the epoxy group-containing unsaturated compound. Such an effect is not obtained.
- Comparative Examples 7 to 9 a compound having a functional group other than an epoxy group was used, but the effect as in the present invention was not obtained.
- Comparative Example 10 used a composition containing an epoxy group-containing unsaturated compound within the scope of the present invention. However, since the composition contains a compound having reactivity with an epoxy group, the effect of the present invention is Not obtained. [Examples 10 to 13, Comparative Examples 13 to 15] In Examples 1, 2, 3, 5 and Comparative Examples 2, 3, and 10, except that DPHA, which is a polyfunctional monomer, was replaced with IBXA, after using the same mixed resin, ⁇ resin solubility> and ⁇ Epoxy value> was calculated. The results are shown in Table 6.
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Abstract
Description
以下、本発明のナノインプリント用樹脂製モールドについて図面を参照しながら説明する。
このような単量体がエポキシ基含有単量体のエチレン性二重結合と反応して本発明において樹脂層を形成する樹脂の主幹を構成し、この際エポキシ基を開環せずに残存させる。
2.ナノインプリント用樹脂製モールドの製造方法
本発明のナノインプリント用樹脂製モールドは、
(I)基板上にエポキシ基含有不飽和化合物を1~50重量部含む活性エネルギー線硬化性組成物(組成物全体を100重量部とする)を塗布する工程と、
(II)前記活性エネルギー線硬化性組成物にモールドを当接して、活性エネルギー線を照射し、該モールドの表面に形成された凹凸パターンが転写され、かつ前記活性エネルギー線硬化性組成物のエポキシ価に基づくエポキシ価の変化量が15%以下である樹脂層を形成する工程と、
(III)前記樹脂層の少なくとも凹凸パターンを有する面上に均一な厚さの無機物層を形成する工程と、
(IV)前記無機物層の少なくとも凹凸パターンを有する面上に均一な厚さの離型剤層を形成する工程とを有する工程を実施することにより製造することができる。
活性エネルギー線硬化性組成物は、エポキシ基含有不飽和化合物を1~50重量部、好ましくは20~40重量部(組成物全体を100重量部とする)含有し、好ましくはさらに(メタ)アクリレートを含有する。(メタ)アクリレートの含有量は、好ましくは50~99重量部、さらに好ましくは60~80重量部である。上記範囲で、前記組成物がエポキシ基含有不飽和化合物を含有すると、樹脂層と基板との密着性および樹脂層と離型剤層との密着性が良好である。エポキシ含有不飽和化合物および(メタ)アクリレートの例は、上述の通りである。
前記活性エネルギー線硬化性組成物にモールドを当接して、活性エネルギー線を照射することにより組成物を反応させ、表面にモールドの凹凸が転写された樹脂層を形成する。
エポキシ価の変化量は、活性エネルギー線硬化反応における架橋反応の進行の尺度となるが、上記のように活性エネルギー線を用いて、エポキシ基と反応可能な基を有する単量体を使用しない場合、エポキシ価は、樹脂100g中のエポキシ当量を表す値であるが、エポキシ基含有単量体の仕込み量から算定される理論値と略一致する。
樹脂層の少なくとも形状を有する表面上に、被接体を自転、公転させながら、前記無機物または無機酸化物を蒸着、スパッタリング等の通常の薄膜形成手段を行うことにより、好ましくは0.5~100nm、より好ましくは0.5~20nm、最も好ましくは、1~10nmの均一な厚さの無機物または無機酸化物の薄膜を形成する。このように自転、公転を行い、さらに所定時間毎にその回転方向を変えながら無機物層を形成することにより、形成された無機物層の厚さが均一になり、樹脂層に形成された凹凸形状の歪みなども補正することができる。
前記無機物層の少なくとも形状を有する表面上に、前記離型剤をディップコート、スピンコート、蒸着、スプレー等の通常の塗布操作を行う。なお、離型剤は、離型剤が溶解する有機溶媒で希釈されたものを用いてもよい。
(1)通常の使用方法
本発明のナノインプリント用樹脂製モールドは、熱可塑性樹脂、熱硬化性樹脂または光硬化性樹脂のインプリントに好適に用いられる。特に本発明のナノインプリント用樹脂製モールドは、光硬化性樹脂のインプリントに好適に用いられる。従って、より効率的に光硬化反応を完了させるためにナノインプリント用樹脂製モールドは、高い透明性を有していることが望ましく、通常は80%以上に光透過率を有している樹脂を使用する。本発明ではナノインプリント用樹脂製モールドの樹脂層に含まれているエポキシ基が開環せずにそのまま残っており、架橋構造が形成されていないので、樹脂が白濁することがなく、光透過率80%以上の良好な透明性を有している。
インプリント対象の樹脂5は、通常熱可塑性樹脂、熱硬化性樹脂または光硬化性樹脂のいずれかの樹脂であり、通常、基板6上にある。
熱可塑性樹脂または熱硬化性樹脂を用いた場合は、樹脂をガラス転移温度(Tg)以下の温度に冷却し、モールドと樹脂層を引き離す。
光硬化性樹脂を用いた場合は、樹脂を活性エネルギー線にて硬化させた後に、モールドと樹脂層を引き離す。
本発明のナノインプリント用樹脂製モールドは、ローラー等に巻きつけて使用するローラー式ナノインプリント用樹脂製モールドとしても用いることができる。
樹脂層の底面と、凹凸パターンを有する表面の中で最も高い面との間を樹脂層の膜厚とした。
樹脂層の膜厚(図1中Yで示す)を形状高さ(図1中Xで示す)で除した値である。
転写品の凹又は凸の幅を測長し、以下の式により求めた。
<硬化安定性>
硬化後の硬化品の表面のタックの有無を確認し、以下の基準で評価した。
×:タックあり
<無機物層の厚さ>
薄膜測定装置(型式:F20 Filmetrics社製)を用い、面内任意の箇所5点を測定し、その平均を酸化膜層の厚さとした。尚、厚さの均一性は、上記5点の標準偏差により確認した。
薄膜測定装置(型式:F20 Filmetrics社製)を用い、面内任意の箇所5点を測定し、その平均を離型剤層の厚さとした。尚、厚さの均一性は、上記5点の標準偏差により確認した。
周期及び線幅はSEM(日立ハイテック(株)製 S―4800)、深さ(高さ)はAFM(SIIナノテクノロジー社製 L-trace)にて評価した。
本発明のナノインプリント用樹脂製モールドの表面平滑性は、光干渉式表面形状測定装置(型式:WYKO-1100、Veeco製)で測定し、その結果を以下の基準で評価した。
転写によるナノインプリント用樹脂製モールドの樹脂層と基板との剥離の有無を光学顕微鏡(製品名:LV-100、ニコン(株)製)にて観察し、以下の基準で評価した。
転写後のナノインプリント用樹脂製モールドのクラックの有無を、光学顕微鏡(製品名:LV-100、ニコン(株)製)(対物20倍)を用いて観察し、以下の基準で評価した。
転写対象の樹脂のナノインプリント用樹脂製モールド表面への付着の有無を、光学顕微鏡(製品名:LV-100、ニコン(株)製)(対物20倍)を用いて観察し、以下の基準で評価した。
樹脂製モールドの表面を目視観察して、以下の基準で評価した。
上記、「剥がれ」、「ヒビ」、「転着」および「形状欠損」を生じない転写が可能な回数をもとに、以下の基準で評価した。
表6に記載の組成の単量体混合物に、開始剤イルガキュア184(長瀬産業(株)製)10重量部をさらに混合し、光重合性樹脂液を厚さ1mmになるように型に流し込み、波長365nmのUV光を4分間照射させ、重合体を作製した。この重合体を固形分10重量%の割合でトルエンへの溶解を試みた結果を、以下の基準で評価した。
試料100g中に含まれるエポキシ基のグラム当量数(当量/100g)で示す。その測定法は、JIS K7236法(1986)に準拠させて、樹脂溶解性評価に用いたサンプル0.5gに酢酸およびトルエンを体積1:1となるように混合した溶液50mlを加えて溶解し、次いで、臭化テトラエチルアンモニウム-酢酸溶液を0.1mlを加え混合後、0.1N過塩素酸-酢酸溶液で電位差滴定を行い、エポキシ当量を求め、エポキシ価=100/エポキシ当量の式から算出する。
(1)樹脂層の形成
イソボロニルアクリレート(IBXA)を75重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)を10重量部混合した光硬化性樹脂液をポリエチレンテレフタレート(PET:0.125mm厚)フィルム上に膜厚1000nmになるようにスピンコートしたのち、表面にモスアイ構造の凹凸が付与されたニッケルモールド(転写面70mm□・周期350nm・深さ350nm)に0.4MPaで押し付け、UV照射(10mW/cm2、1分)により樹脂膜を硬化させた後、モールドを離型して形状が付与された樹脂シートを得た。このときの樹脂膜厚と形状高さの比率は、6.0であった。
(1)で得られた表面に形状が付与された樹脂シート上に、SiO2を自公転蒸着法により、10nm厚さの酸化被覆膜を形成し、無機物層とした。尚、蒸着は光学薄膜形成装置(オプトランOMC-1100)を用い、室温下、約1分間の真空蒸着を行った。蒸着後、無機物層の表面形状にクラックや形状の欠損がないことを目視にて確認した。
(2)で得られた無機物層と光硬化製樹脂層と基板との積層物を、パーフルオロ系のフッ素系離型剤(商品名:オプツールDSX ダイキン工業(株)製)に1分間浸積した後、引き上げ70℃ 90%RHの湿熱環境に1時間静置した。その後、フッ素系溶剤(商品名HD-TH ハーベス社製)でリンスし、23℃,65%RHの環境で24時間静置し、離型剤層の処理を完了した。厚さは3nmであった。
(3)で得たナノインプリント用樹脂製モールドの上に光硬化性樹脂(商品名PAK-02 東洋合成(株)製)を0.2ミリリットル滴下し、その上にポリカーボネートフィルム(商品名レキサン 旭硝子社製)をかぶせ、光ナノインプリント装置(エンジニアリング・システム社製)を用い0.4MPaで2分間押しつけた後に紫外線照射(10mW/cm2)2分間行った。その後、ナノインプリント用樹脂製モールドを外し、モールドには転写欠陥の無いことを確認した。
実施例1において、イソボロニルアクリレート(IBXA)を80重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)を5重量部用いた以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)を65重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)を20重量部用いた以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)の代わりにメチルメタクリレート(MMA)を75重量部用い、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)を20重量部にした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)を30重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)を45重量部用いた以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)を25重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を5重量部、グリシジルメタクリレート(GMA)を70重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。
実施例1において、イソボロニルアクリレート(IBXA)を15重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)を70重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)を84.5重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)を0.5重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)を70重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)の代わりにフェノキシエチルアクリレート(POA)を15重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)を70重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)の代わりにラウリルアクリレート(LA)を15重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)を50重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を50重量部、グリシジルメタクリレート(GMA)を0重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)を75重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)の代わりにアクリル酸(AA)を10重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。
実施例1において、イソボロニルアクリレート(IBXA)を75重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)の代わりに4-ヒドロキシブチルアクリレート(4HBA)を10重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表2に示す。
実施例1において、イソボロニルアクリレート(IBXA)を75重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)の代わりにジメチルアミノエチルアクリレート(DMAEA)を10重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表2に示す。
実施例1において、イソボロニルアクリレート(IBXA)を75重量部、ジペンタエリスリトールヘキサアクリレート(DPHA)を15重量部、グリシジルメタクリレート(GMA)を5重量部、アクリル酸(AA)5重量部とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表2に示す。
実施例1において、イソボロニルアクリレート(IBXA)、ジペンタエリスリトールヘキサアクリレート(DPHA)およびグリシジルメタクリレート(GMA)の代わりに、ジメチルシロキサン(PDMS)を100重量部用いた以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1において、イソボロニルアクリレート(IBXA)およびグリシジルメタクリレート(GMA)を用いることなく、ジペンタエリスリトールヘキサアクリレート(DPHA)を60重量部、ネオペンチルグリコールアクリレート(A-NPG)を40重量部用いた以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表1に示す。
実施例1の(3)において、マスターモールドを表面に円柱構造の凹凸が付与されたニッケルモールド(転写面25mm□、ホール径165nm、周期450nm、深さ165nm、円柱形状)に変えた以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表3に示す。
実施例1の(3)において、マスターモールドを表面に線状構造の凹凸が付与されたニッケルモールド(転写面35mm□、75nmL/S、周期150nm、深さ150nm、線状形状)に変えた以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表3に示す。
実施例1において、光硬化性樹脂液のポリエチレンテレフタレート(PET)上への塗布量を、膜厚1800nmとなるようにして、樹脂膜厚と形状高さの比率を5.1とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表3に示す。
実施例1において、光硬化性樹脂液のポリエチレンテレフタレート(PET)上への塗布量を、膜厚3500nmとなるようにして、樹脂膜厚と形状高さの比率を10.0とした以外は、実施例1と同様にして、ナノインプリント用樹脂製モールドを作製した。さらに得られたナノインプリント用樹脂製モールドを用いて実施例1と同様にしてインプリントを行った。得られたナノインプリント用樹脂製モールドおよびインプリント結果を表3に示す。
実施例1のナノインプリント用樹脂製モールドを用いて、インプリントを実施例1の(4)の代わりに以下のようにして行った。
実施例1の(1)において、ニッケルモールドの押付け圧を0.8MPaとし、樹脂膜を硬化させるためのUV照射を10mW/cm2で10秒間行った以外は、実施例1と同様にしてナノインプリント用樹脂製モールドを製造した。得られたナノインプリント用樹脂製モールドの形状を表5に示す。
実施例1の(1)において、樹脂膜を硬化させるためのUV照射を50mW/cm2で2秒間行った以外は、実施例1と同様にしてナノインプリント用樹脂製モールドを製造した。得られたナノインプリント用樹脂製モールドの形状を表5に示す。
実施例1の(1)において、ニッケルモールドの押付け圧を3MPaとし、樹脂膜を硬化させるためのUV照射を10mW/cm2で10秒間行った以外は、実施例1と同様にしてナノインプリント用樹脂製モールドを製造した。得られたナノインプリント用樹脂製モールドの形状を表5に示す。
IBXA:イソボロニルアクリレート、
MMA:メタクリル酸メチル、
POA:フェノキシエチルアクリレート、
LA:ラウリルアクリレート、
A-NPG:ネオペンチルグリコールアクリレート、
AA:アクリル酸、
4HBA:4-ヒドロキシブチルアクリレート、
DMAEA:ジメチルアミノエチルアクリレート、
GMA:グリシジルメタクリレート、
PDMS:ポリジメチルシロキサン、
DPHA:ジペンタエリスリトールヘキサアクリレート
DSX:フッ素系離型剤
実施例1~5より、組成物が本発明の範囲でエポキシ基含有不飽和化合物を含有すると、ナノインプリント用樹脂製モールドの欠損および転写欠損のないナノインプリント用樹脂製モールドが得られることがわかる。
〔実施例10~13、比較例13~15〕
実施例1,2,3,5、比較例2,3,10において、多官能性モノマーであるDPHAをIBXAに置き換えた以外は、同一となる混合樹脂を用いた後、<樹脂溶解性>および<エポキシ価>の計算を行った。その結果を表6に示す。
2:無機物層
3:樹脂層
4:基板
5:樹脂
6:基板
7:ローラー式ナノインプリント用樹脂製モールド
8:光源
Claims (16)
- マスターモールドの表面に形成された凹凸を転写した樹脂製モールドを形成する樹脂が、エチレン性二重結合を有するモノマーが(共)重合した主幹を有すると共に、この主幹を構成するモノマーの少なくとも一部にエポキシ基を有する反応性モノマーを用いて、エポキシ基を開環させることなくエチレン性二重結合を反応させて主幹を形成している樹脂からなることを特徴とするナノインプリント用樹脂製モールド。
- 前記樹脂層の樹脂が、前記エポキシ基含有不飽和化合物および(メタ)アクリレートの共重合体であることを特徴とする請求項第1項記載のナノインプリント用樹脂製モールド。
- 上記エポキシ基を開環させることなくエチレン性二重結合を反応させて主幹を形成している樹脂からなる樹脂層が、基板層表面に形成され、該樹脂層の基板層が形成されていない表面には無機物層が形成され、該無機物層の表面には離型剤層が形成されていることを特徴とする請求項第1項記載のナノインプリント用樹脂製モールド。
- 前記離型剤層の厚さが、0.5~20nmであることを特徴とする請求項第3項記載のナノインプリント用樹脂製モールド。
- 前記無機物層の厚さが、0.5~100nmであることを特徴とする請求項第3項記載のナノインプリント用樹脂製モールド。
- 前記無機物層が、SiO2、ZrO2、ZnO、Ta2O5、HfO2、ITO、FTO、TiO2からなる群から選ばれる少なくとも1種の無機物からなることを特徴とする請求項第3項記載のナノインプリント用樹脂製モールド。
- 前記離型剤層が、フッ素系シランカップリング剤、アミノ基又はカルボキシル基を有するパーフルオロ化合物およびアミノ基又はカルボキシル基を有するパーフルオロエーテル化合物からなる群から選ばれる少なくとも1種の離型剤からなることを特徴とする請求項第3項記載のナノインプリント用樹脂製モールド。
- 前記基板が、樹脂、ガラス、シリコン、サファイア、窒化ガリウム、カーボンおよび炭化ケイ素からなる群から選ばれる1種の基板であることを特徴とする請求項第3項記載のナノインプリント用樹脂製モールド。
- 前記基板が、ポリエチレンテレフタレート、ポリカーボネート、ポリエステル、ポリメタクリル酸メチル、ポリスチレン、環状ポリオレフィン、ポリイミド、ポリサルフォン、ポリエーテルサルフォンおよびポリエチレンナフタレートからなる群から選ばれる1種の樹脂であることを特徴とする請求項第3項記載のナノインプリント用樹脂製モールド。
- 前記離型剤層表面の純水に対する接触角が100°以上であることを特徴とする請求項請求項第3項記載のナノインプリント用樹脂製モールド。
- 樹脂層の表面に転写された凹凸の繰り返し単位周期が、10nm~50μmであることを特徴とする請求項第1項または第3項記載のナノインプリント用樹脂製モールド。
- ナノインプリント用樹脂製モールドがローラーに固定されていることを特徴とする請求項第1項または第3項記載のナノインプリント用樹脂製モールド。
- (I)基板上にエポキシ基含有不飽和化合物を1~50重量部含む活性エネルギー線硬化性組成物(組成物全体を100重量部とする)を塗布する工程と、
(II)前記活性エネルギー線硬化性組成物にモールドを当接して、活性エネルギー線を照射し、該モールドの表面に形成された凹凸パターンが転写され、かつ前記活性エネルギー線硬化性組成物のエポキシ価に基づくエポキシ価の変化量が15%以下である樹脂層を形成する工程と、
(III)前記樹脂層の少なくとも凹凸パターンを有する面上に均一な厚さの無機物層を形成する工程と、
(IV)前記無機物層の少なくとも凹凸パターンを有する面上に均一な厚さの離型剤層を形成する工程とを含むことを特徴とするナノインプリント用樹脂製モールドの製造方法。 - 前記工程(I)における前記活性エネルギー線硬化性組成物が、(メタ)アクリレートである請求項第13項記載のナノインプリント用樹脂製モールドの製造方法。
- 樹脂表面に請求項第1項乃至第12項のいずれかの項記載のナノインプリント用樹脂製モールドを当接する工程と、
前記樹脂から前記ナノインプリント用樹脂製モールドから離型する工程とを含むことを特徴とするナノインプリント用樹脂製モールドの使用方法。 - 前記樹脂が、光硬化性樹脂であることを特徴とする請求項第15項記載のナノインプリント用樹脂製モールドの使用方法。
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2011
- 2011-08-03 DK DK11814673.7T patent/DK2602089T3/da active
- 2011-08-03 KR KR1020137003989A patent/KR20130138723A/ko not_active Application Discontinuation
- 2011-08-03 US US13/814,325 patent/US9713900B2/en not_active Expired - Fee Related
- 2011-08-03 SG SG10201506124TA patent/SG10201506124TA/en unknown
- 2011-08-03 WO PCT/JP2011/067775 patent/WO2012018048A1/ja active Application Filing
- 2011-08-03 EP EP11814673.7A patent/EP2602089B1/en not_active Not-in-force
- 2011-08-03 SG SG2013008388A patent/SG187703A1/en unknown
- 2011-08-03 JP JP2012527752A patent/JP5838160B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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US9713900B2 (en) | 2017-07-25 |
EP2602089A4 (en) | 2015-10-07 |
US9895838B2 (en) | 2018-02-20 |
SG10201506124TA (en) | 2015-09-29 |
JPWO2012018048A1 (ja) | 2013-10-03 |
SG187703A1 (en) | 2013-03-28 |
KR20130138723A (ko) | 2013-12-19 |
US20170252962A1 (en) | 2017-09-07 |
CN103068556B (zh) | 2015-07-22 |
CN103068556A (zh) | 2013-04-24 |
JP5838160B2 (ja) | 2015-12-24 |
EP2602089B1 (en) | 2017-12-20 |
US20130127090A1 (en) | 2013-05-23 |
EP2602089A1 (en) | 2013-06-12 |
DK2602089T3 (da) | 2018-01-29 |
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