WO2009081586A1 - インプリント装置およびインプリント方法 - Google Patents
インプリント装置およびインプリント方法 Download PDFInfo
- Publication number
- WO2009081586A1 WO2009081586A1 PCT/JP2008/003953 JP2008003953W WO2009081586A1 WO 2009081586 A1 WO2009081586 A1 WO 2009081586A1 JP 2008003953 W JP2008003953 W JP 2008003953W WO 2009081586 A1 WO2009081586 A1 WO 2009081586A1
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- WIPO (PCT)
- Prior art keywords
- mold
- pressurizing chamber
- molding
- molding object
- gas
- Prior art date
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Classifications
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
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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
Definitions
- the present invention relates to an imprint apparatus and imprint method with high throughput.
- thermal nanoimprint technology has attracted attention as a method for forming micro-order and nano-order ultrafine patterns. This is because the object to be molded such as a substrate or film made of a thermoplastic resin or the like is heated to a temperature higher than the glass transition temperature of the resin, and a mold having a fine pattern is pressed on the object to be molded. Is to be transferred.
- the parallelism and flatness of the mold and workpiece are important. This is because if the mold and the object to be molded are not parallel, the applied pressure becomes non-uniform, and a large stress is locally applied to the mold to cause deformation or breakage or cause pattern transfer failure.
- Patent Document 1 a device in which an elastic member is disposed on the back side of a mold
- Patent Document 2 a device that pressurizes a mold with oil or the like through a flexible film
- the problems due to the parallelism and flatness of the mold and the object to be molded have not been sufficiently solved.
- the conventional apparatus has a stage for holding the molding object between the heater and the molding object, which requires a lot of heat, and requires a lot of time for heating and cooling. It was. These problems become more prominent as the mold becomes larger.
- an object of the present invention is to provide an imprint apparatus and an imprint method capable of uniformly applying pressure between a mold and a molding object and capable of raising and lowering the temperature at high speed.
- a first imprint apparatus of the present invention is an imprint apparatus for transferring a pattern of a mold onto a film-shaped object, and a stage for holding the mold;
- a pressurizing chamber casing that constitutes a pressurizing chamber together with the molding object, sealing means for sealing between the pressurizing chamber casing and the molding target, and the pressurizing chamber casing; Opening and closing means for opening and closing between the molding object, pressurizing means for adjusting the atmospheric pressure in the pressurizing chamber, heating means for heating one or both of the mold and the molding object, It is characterized by comprising.
- a second imprint apparatus of the present invention is an imprint apparatus for transferring a pattern of a film-like mold onto a molding object, and a stage for holding the molding object, and pressurization together with the mold
- a pressurizing means for adjusting the atmospheric pressure in the pressurizing chamber, and a heating means for heating one or both of the mold and the molding object is an imprint apparatus for transferring a pattern of a film-like mold onto a molding object, and a stage for holding the molding object, and pressurization together with the mold
- a pressurizing means for adjusting the atmospheric pressure in the press
- the heating means may be one that heats by electromagnetic wave radiation or one that supplies a gas heated to a predetermined temperature to the pressurizing chamber casing.
- a cooling means for cooling the molding object.
- the mold is a film-shaped mold used at a predetermined molding temperature, and is made of a base layer made of a thermoplastic resin and a material harder than the resin at the molding temperature. And a hard layer formed on the molding surface side of the base layer.
- the first imprinting method of the present invention is an imprinting method for transferring a pattern of a mold onto a film-like molding object, and directly pressing the molding object against the mold with gas. It is characterized by.
- the second imprinting method of the present invention is an imprinting method for transferring a pattern of a film-like mold onto a molding object, and directly pressing the mold against the molding object with gas. It is characterized by.
- either one or both of the mold and the molding object can be heated by electromagnetic wave radiation, or can be heated by a gas having a predetermined temperature.
- a flexible film-like material is used for at least one of the mold and the object to be molded, and this is directly pressed with gas, so that pressure is uniformly applied between the mold and the object to be molded. And the pattern can be accurately transferred.
- the object to be molded can be made high-speed by heating by electromagnetic radiation or by heating at a predetermined temperature.
- the temperature can be increased and decreased, and the throughput can be improved.
- a first imprint apparatus 1 of the present invention is an imprint apparatus for transferring a pattern of a mold 100 to a film-shaped object 200, and holds the mold 100.
- a stage 11 a pressurizing chamber casing 13 that forms the pressurizing chamber 12 together with the molding target 200, a sealing means 14 that seals between the pressurizing chamber casing 13 and the molding target 200, and pressurization Opening / closing means 15 for opening and closing between the chamber casing 13 and the molding object 200, pressurizing means 16 for adjusting the atmospheric pressure in the pressurizing chamber 12, and heating means 17 for heating the molding object 200, , Mainly composed of.
- a degassing means 18 for degassing the gas between the mold 100 and the workpiece 200.
- the stage 11 may be anything as long as it can hold the mold 100.
- the surface that holds the mold 100 is formed in a planar shape larger than the mold 100, or the mold 100 is placed on the plane.
- a recess having a depth similar to the thickness of the mold 100 and in which the mold 100 can be installed is formed.
- Any material may be used as long as it has pressure resistance and heat resistance that can withstand pressure and heating during molding, but it is preferable to use a material having a coefficient of thermal expansion close to that of the mold 100.
- the mold 100 is made of nickel, the nickel stage 11 can be used.
- a holder for holding the molding target 200 may be provided separately.
- the pressurizing chamber casing 13 is formed in a bottomed cylindrical shape having an opening, and constitutes the pressurizing chamber 12 which is a sealed space by closing the opening with the molding object 200.
- the opening is formed to be larger than at least the pattern area transferred to the molding object 200.
- Any material may be used as long as it has pressure resistance and heat resistance that can withstand pressurization and heating during molding.
- iron materials such as carbon steel and metals such as SUS can be used.
- the sealing means 14 is for bringing the pressurizing chamber casing 13 and the molding target 200 into close contact with each other in order to make the pressurizing chamber 12 a closed chamber.
- an O-ring 141 is prepared as the sealing means 14, and a concave groove 142 shallower than the diameter of the cross-section of the O-ring is formed at the end of the side wall of the pressurizing chamber housing 13.
- An O-ring 141 may be disposed in the groove 142. Accordingly, the molding object 200 can be sandwiched between the pressurizing chamber casing 13 and the stage 11, and the pressurizing chamber casing 13 and the molding target 200 can be brought into close contact with each other. can do. Further, even if there is an inclination between the pressurizing chamber casing 13 and the workpiece 200, the pressurizing chamber 12 can be reliably sealed if the parallelism is within the crushing margin of the O-ring 141. it can.
- the opening / closing means 15 opens and closes the pressurizing chamber 12 by bringing the pressurizing chamber casing 13 and the molding object 200 close to or away from each other.
- the pressurizing chamber casing 13 is hydraulically or pneumatically operated. It is possible to apply one that moves by a cylinder, one that moves by an electric motor and a ball screw, and the like.
- the pressurizing unit 16 may be any unit as long as the pressure in the pressurizing chamber 12 can be adjusted to a pressure at which the pattern of the mold 100 can be transferred to the molding target 200.
- the pressurizing chamber gas supply / exhaust flow path 161 may be connected to the body 13 to supply or exhaust gas such as air or inert gas from the pressurizing chamber gas supply / exhaust flow path 161 to the pressurizing chamber 12.
- a cylinder 162 (see FIG. 1) having a compressed gas or a pressurizing pump can be used.
- the gas may be exhausted by opening / closing the deaeration valve 163.
- you may provide a safety valve etc. suitably.
- the heating means 17 may be anything as long as it can heat either the mold 100 or the molding object 200 or both to the glass transition temperature or the melting temperature of the molding object or higher.
- a heater provided on the side to heat the mold 100 and the molding object 200 from the stage 11 side can be used.
- emission by electromagnetic waves, such as a far infrared ray can also be used.
- a ceramic heater or a halogen heater provided on the pressurizing chamber 12 side of the pressurizing chamber casing 13 may be used.
- the heat capacity can be reduced, and the molding object 200 can be minimized. It can be heated at a high speed with the amount of heat. In addition, this makes it possible to speed up the cooling.
- the gas supplied by the pressurizing means can be heated and heated by the heated gas.
- the heating means 17 may be a combination of a plurality of these.
- a heat insulating material 171 may be provided between the pressurizing chamber casing 13 and the heating means 17. Further, the temperature of the mold 100 or the molding object 200 is detected using a temperature detection unit such as a thermocouple, and the heating unit 17 is controlled by a control unit (not shown) such as a temperature controller to adjust the temperature. good.
- the deaeration means 18 is for removing gas between the mold 100 and the workpiece 200.
- the reason why it is preferable to provide the deaeration means 18 is that when a gas exists between the mold 100 and the molding object 200, the mold 100 and the molding object 200 cannot be sufficiently pressed, or uneven heating occurs. This is because it causes a transfer defect.
- the vacuum chamber 181 includes, for example, a ceiling member 182 that covers an upper portion of the pressurizing chamber casing 13, a bellows 183 that is provided by hanging from the ceiling member 182 and covers a side portion of the pressurizing chamber casing 13, and the bellows 183 and the stage 11 or the base 10 on which the stage 11 is mounted are formed by a seal member 184 and a vacuum pump 185 that exhausts the gas in the vacuum chamber 181 through the vacuum chamber gas supply / discharge channel. Is done.
- the seal member 184 is disposed in a concave groove formed on the stage 11 side of the bellows 183.
- the vacuum pump may be any pump that can depressurize the vacuum chamber 181 to the extent that no transfer failure occurs when the molding object 200 is pressurized to the mold 100.
- the ceiling member 182 is formed to be movable by the opening / closing means 15. Needless to say, the ceiling member 182, the bellows 183, and the seal member 184 have a strength that can withstand external forces when evacuated.
- the pressurizing chamber supply / exhaust flow channel and the vacuum chamber gas supply / exhaust flow channel can be made common.
- the gas between the mold 100 and the workpiece 200 is removed by discharging the gas in the vacuum chamber 181 and the pressure chamber 12 with the pressure chamber 12 released.
- the pressurizing chamber 12 is closed by the opening / closing means 15, a gas is supplied to the pressurizing chamber 12 to press the molding object 200 against the mold 100.
- the imprint apparatus may include a cooling means. Any cooling means may be used as long as it cools the mold 100 or the molding object 200.
- air such as air or an inert gas lower than the temperature of the molding object 200 may be used.
- a fan or the like for blowing air to the mold 100 can be used.
- a cooling channel made of a metal having high thermal conductivity such as aluminum or copper is formed in the stage 11, and a cooling liquid such as water or oil or a cooling gas such as air or an inert gas is allowed to flow inside the cooling channel. You may do it.
- various objects can be applied as the object 200 as long as it can be deformed in accordance with the shape of the mold 100 by the pressure from the pressurizing chamber 12 side at the molding temperature.
- resins such as polycarbonate, polyimide, polytetrafluoroethylene (PTFE), polyethylene, polystyrene, polypropylene, paraffin, and cyclic olefin thermoplastic resins
- metals such as aluminum may be used.
- any thermoplastic material can be used arbitrarily regardless of the shape such as a plate shape, a sheet shape, or a film shape.
- a material having a thickness of 1 mm or less can be suitably used.
- a sheet or film having a thickness of 500 ⁇ m or less is preferable, and the film thickness is as thin as 200 ⁇ m or less, 100 ⁇ m or less, 50 ⁇ m or less. As it becomes, the effect of the present invention is remarkably exhibited.
- the mold 100 is formed of, for example, “metal such as nickel”, “ceramics”, “carbon material such as glassy carbon”, “silicon”, and the like, and a predetermined pattern is formed on one end surface (molded surface) thereof. ing.
- This pattern can be formed by subjecting the molding surface to precision machining.
- it is formed on a silicon substrate or the like by a semiconductor microfabrication technique such as etching, or the surface of the silicon substrate or the like is subjected to metal plating by an electroforming method, for example, a nickel plating method, and the metal plating layer is peeled off. It can also be formed.
- the material and manufacturing method of the mold 100 are not particularly limited as long as a fine pattern can be formed.
- the width of this pattern (dimension in the planar direction of the molding surface) varies depending on the type of molding object 200 used, but various sizes such as 100 ⁇ m or less, 10 ⁇ m or less, 2 ⁇ m or less, 1 ⁇ m or less, 100 nm or less, 10 nm or less, etc. Formed.
- the depth of this pattern (dimension in the direction orthogonal to the molding surface 100a) is formed in various sizes such as 10 nm or more, 100 nm or more, 200 nm or more, 500 nm or more, 1 ⁇ m or more, 10 ⁇ m or more, 100 ⁇ m or more.
- the aspect ratio of this pattern includes various patterns such as 0.2 or more, 0.5 or more, 1 or more, 2 or more.
- the mold 100 is heated and cooled during the imprint process, it is preferable to make the mold 100 as thin as possible and reduce its heat capacity.
- Step 1 A mold 100 having a pattern obtained by inverting the pattern to be transferred to the molding object 200 is prepared and fixed on the stage 11. A film-like object 200 is placed on the mold 100 (see FIG. 3).
- Step 2 The gas between the mold 100 and the workpiece 200 is removed by the deaeration means 18.
- the vacuum chamber 181 is formed by bringing the sealing member of the bellows 183 into contact with the base 10 with the pressurizing chamber 12 open (see FIG. 2).
- the air in the vacuum chamber 181 is exhausted from a pressurizing chamber gas supply / discharge passage 161 provided in the pressurizing chamber 12 by a vacuum pump.
- the seal member is brought into contact with the base 10 by the elastic force of the bellows, but may be fixed to the base by a separate fixing means.
- Step 3 The pressurizing chamber casing 13 is moved to the molding target 200 side by the opening / closing means 15, and the O-ring (sealing means 14) is brought into contact with the molding target to constitute the pressurizing chamber 12 (see FIG. 1).
- Step 4 The inside of the pressurizing chamber 12 is pressurized by the pressurizing means 16, and the molding object 200 is pressed against the mold 100.
- Step 5 The mold 100 or the molding object 200 is heated by the heating means 17 to a temperature at which the molding object 200 can flow (for example, the glass transition temperature of the resin) or higher.
- a temperature at which the molding object 200 can flow for example, the glass transition temperature of the resin
- the mold 100 and the molding object 200 may be directly heated using a far infrared heater formed on the ceiling portion of the pressurizing chamber casing 13.
- step 4 and step 5 may be reverse, and you may pressurize after heating.
- Step 6 After a lapse of a predetermined time sufficient to transfer the pattern of the mold 100 to the molding object 200, heating by the heating means 17 is stopped, and the molding object 200 is cooled by the cooling means.
- Step 7 After reducing the pressure in the pressurizing chamber 12 to atmospheric pressure, the pressurizing chamber 12 and the vacuum chamber 181 are opened, and the molding object 200 is released from the mold 100.
- the pressurizing chamber 12 and the vacuum chamber 181 are opened, and the molding object 200 is released from the mold 100.
- cooling gas as a cooling means
- the second imprint apparatus 2 of the present invention is an imprint apparatus for transferring a pattern of a film-like mold 100 to a molding object 200, and holds the molding object 200.
- Stage 11 for pressurization casing 13 for pressurizing chamber that constitutes pressurizing chamber 12 together with mold 100, sealing means 14 for sealing between pressurizing chamber casing 13 and mold 100, mold 100 and cover
- a deaeration means 18 for removing gas between the molded articles 200 an opening / closing means 15 for opening and closing between the pressurizing chamber casing 13 and the mold 100, and a heating means 17 for heating the molding 200.
- pressurizing means 16 for adjusting the pressure in the pressurizing chamber 12.
- the second imprint apparatus 2 of the present invention is the same as the first imprint apparatus 1 of the present invention, except that the film 100 is used as the mold 100 and the positions of the mold 100 and the molding object 200 are switched. is there.
- the stage 11 may be anything as long as it can hold the molding object 200.
- the surface that holds the molding object 200 is formed in a planar shape larger than the molding object 200, or A recess having a depth approximately the same as the thickness of the molding object 200 and in which the molding object 200 can be provided is formed on the plane.
- Any material may be used as long as it has pressure resistance and heat resistance that can withstand pressurization and heating during molding. However, it is preferable to use a material having a thermal expansion coefficient close to that of the molding object 200.
- the casing 13 for the pressurizing chamber is formed in a bottomed cylindrical shape having an opening, and constitutes the pressurizing chamber 12 which is a sealed space by closing the opening with the mold 100.
- the opening is formed to be larger than at least the pattern area transferred to the molding object 200.
- Any material may be used as long as it has pressure resistance and heat resistance that can withstand pressurization and heating during molding.
- iron materials such as carbon steel and metals such as SUS can be used.
- the sealing means 14 closes the pressurizing chamber casing 13 and the mold 100 in order to make the pressurizing chamber 12 a closed chamber.
- an O-ring is prepared as the sealing means 14, and a concave groove shallower than the diameter of the cross section of the O-ring is formed at the end of the side wall of the pressurizing chamber housing 13.
- An O-ring may be disposed on the side. Accordingly, the mold 100 can be sandwiched between the pressurizing chamber casing 13 and the stage 11 and the pressurizing chamber casing 13 and the mold 100 can be brought into close contact with each other, so that the pressurizing chamber 12 can be sealed. . Even if there is an inclination between the pressurizing chamber casing 13 and the mold 100, the pressurizing chamber 12 can be reliably sealed if the parallelism is within the crushing margin of the O-ring.
- the opening / closing means 15 opens and closes the pressurizing chamber 12 by bringing the pressurizing chamber casing 13 and the mold 100 close to or away from each other.
- the pressurizing chamber casing 13 is a hydraulic or pneumatic cylinder. It is possible to apply one that moves by means of an electric motor and one that moves by an electric motor and a ball screw.
- the mold 100 used for the imprint apparatus 2 can be various types as long as it is a film that can be deformed according to the shape of the molding object 200 by the pressure from the pressurizing chamber 12 side.
- a layer composed of a base layer 101 having a predetermined pattern 103 and a hard layer 102 formed on the pattern 103 can be used.
- the base layer 101 is composed of cyclic olefin ring-opening polymerization / hydrogenated product (COP), cyclic olefin resin such as cyclic olefin copolymer (COC), acrylic resin, polycarbonate, vinyl ether, perfluoroalkoxyalkane (PFA), polytetrafluoro. It is formed of a film made of a thermoplastic resin such as ethylene (PTFE), polystyrene, or polyimide resin. Further, from the viewpoint of dimensional stability of the pattern, the water absorption of the thermoplastic resin used for the base layer 101 is preferably 3% or less.
- the base layer 101 has a predetermined pattern 103.
- the pattern 103 may be formed in any way, but for example, a nanoimprint technique such as a thermal imprint method can be used.
- the pattern 103 is not only a geometric shape made of unevenness, but also a pattern for transferring a predetermined surface state, such as a mirror surface transfer having a predetermined surface roughness, or a predetermined curved surface. Also included are those for transferring optical elements such as lenses.
- this pattern 103 can be easily formed even if the minimum dimension of the width of the convex part and the concave part in the plane direction is 100 ⁇ m or less.
- the width (dimension in the plane direction) of the pattern 10 varies depending on the type of the molding 200 to be used, but various sizes such as 100 ⁇ m or less, 10 ⁇ m or less, 2 ⁇ m or less, 1 ⁇ m or less, 100 nm or less, 10 nm or less. Formed.
- the dimension in the depth direction of the pattern 103 is formed in various sizes such as 10 nm or more, 100 nm or more, 200 nm or more, 500 nm or more, 1 ⁇ m or more, 10 ⁇ m or more, 100 ⁇ m or more.
- the aspect ratio of the pattern 103 includes various patterns such as 0.2 or more, 0.5 or more, 1 or more, 2 or more.
- the base layer 101 is formed to a thickness that can be deformed according to the shape or the like of the molding object 200 by the pressure from the pressurizing chamber 12 side at the molding temperature.
- the mold 100 is heated and cooled during the imprint process, it is preferable to make the mold 100 as thin as possible and reduce its heat capacity. For example, it is formed to 500 ⁇ m or less, preferably 100 ⁇ m or less, but of course not limited thereto.
- the hard layer 102 is formed of a material harder than the thermoplastic resin used for the base layer 101 when the mold 100 is heated to a molding temperature in thermal imprinting and pressed against the molding target 200. Considering the molding temperature in thermal imprinting, it is preferable to use a material harder than the thermoplastic resin used for the base layer 101 in the range of at least 0 ° C. and 100 ° C. As such a material, a metal or an inorganic material which is solid in a range of at least 0 ° C. and 100 ° C. corresponds.
- metals or metal compounds such as platinum (Pt), nickel (Ni), palladium, ruthenium, gold, silver, copper, ZnO, and indium tin oxide (ITO), and inorganic substances such as Si and SiO 2 .
- Pt platinum
- Ni nickel
- ruthenium gold
- silver copper
- ZnO indium tin oxide
- ITO indium tin oxide
- Si and SiO 2 inorganic substances
- other materials such as a fluorine resin can be used as long as the material is harder than the base layer 101 in the range of at least 0 ° C. and not more than 100 ° C.
- Vickers hardness, Brinell hardness and the like may be compared using a high temperature hardness tester or the like. It can also be confirmed by performing a test by nanoindentation.
- the hard layer 102 be formed thin as long as the strength can be maintained, for example, 100 nm or less. Note that the hard layer 102 may of course be formed in a plurality of layers using different materials depending on the application.
- any method may be used for forming the hard layer 102.
- the above materials are deposited using chemical vapor deposition (CVD), physical vapor deposition (PVD), plating, or the like.
- CVD chemical vapor deposition
- PVD physical vapor deposition
- a metal such as platinum (Pt) or nickel (Ni) may be formed by sputtering or vapor deposition.
- you may form using a silver mirror reaction.
- a material such as a fluororesin is applied, a solution in which the material is dissolved is dropped on the pattern 103 of the base layer 101 and spin-coated, or the base layer 101 is immersed in the solution in which the material is dissolved.
- a method or the like can also be used.
- Step 1 A molding object 200 is prepared and fixed on the stage 11.
- a film-like mold 100 having a pattern obtained by inverting the pattern to be transferred to the molding object 200 is disposed on the molding object 200.
- Step 2 The gas between the mold 100 and the workpiece 200 is removed by the deaeration means 18.
- the vacuum chamber 181 is formed by bringing the seal member of the bellows 183 into contact with the base 10 with the pressurizing chamber 12 opened.
- the air in the vacuum chamber 181 is exhausted from a pressurizing chamber gas supply / discharge passage 161 provided in the pressurizing chamber 12 by a vacuum pump.
- the seal member is brought into contact with the base 10 by the elastic force of the bellows, but may be fixed to the base by a separate fixing means.
- Step 3 The pressurizing chamber casing 13 is moved to the mold 100 side by the opening / closing means 15, and the O-ring (sealing means 14) is brought into contact with the mold 100 to constitute the pressurizing chamber 12 (see FIG. 4).
- Step 4 The inside of the pressurizing chamber 12 is pressurized by the pressurizing means 16, and the mold 100 is pressed against the workpiece 200.
- Step 5 The object 200 is heated by the heating means 17 to a temperature at which the object 200 can flow (for example, the glass transition temperature of the resin) or higher.
- a temperature at which the object 200 can flow for example, the glass transition temperature of the resin
- the mold 100 and the molding object 200 may be directly heated using a far infrared heater formed on the ceiling portion of the pressurizing chamber casing 13.
- step 4 and step 5 may be reverse, and you may pressurize after heating.
- Step 6 After a lapse of a predetermined time sufficient to transfer the pattern of the mold 100 to the molding object 200, heating by the heating means 17 is stopped, and the molding object 200 is cooled by the cooling means.
- Step 7 After reducing the pressure in the pressurizing chamber 12 to atmospheric pressure, the pressurizing chamber 12 and the vacuum chamber 181 are opened, and the molding object 200 is released from the mold 100.
- the pressurizing chamber 12 and the vacuum chamber 181 are opened, and the molding object 200 is released from the mold 100.
- cooling gas as a cooling means
- the extra inclusions that have conventionally existed between the mold 100 and the molding object 200 can be removed, pressure can be applied uniformly between the mold 100 and the molding object 200, and heating can be performed. Cooling can be performed at high speed. Further, the pattern can be transferred even if the molding object 200 is a substrate.
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Abstract
Description
2 インプリント装置
11 ステージ
12 加圧室
13 加圧室用筐体
14 密閉手段
15 開閉手段
16 加圧手段
17 加熱手段
18 脱気手段
100 型
101 基層
102 硬質層
200 被成型物
被成型物200に転写したいパターンを反転させたパターンを有する型100を用意し、ステージ11上に固定する。この型100の上に、フィルム状の被成型物200を配置する(図3参照)。
脱気手段18によって、型100と被成型物200との間の気体を除去する。例えば、加圧室12を開放した状態で、蛇腹183のシール部材を基台10に当接させて真空室181を形成する(図2参照)。この真空室181内の空気を加圧室12内に設けられた加圧室用気体給排流路161から真空ポンプによって排気する。なお、シール部材には、蛇腹の弾性力によって基台10に当接されるが、別途固定手段で基台に固定するようにしても良い。
加圧室用筐体13を開閉手段15によって被成型物200側に移動し、Oリング(密閉手段14)を被成型体に当接させて加圧室12を構成する(図1参照)。
加圧手段16によって加圧室12内を加圧し、被成型物200を型100に押圧する。
加熱手段17によって型100又は被成型物200を被成型物200が流動可能な温度(例えば、樹脂のガラス転移温度)以上に加熱する。例えば、加圧室用筐体13の天井部に形成された遠赤外線ヒータを用いて、型100や被成型物200を直接加熱すれば良い。なお、加圧した後に加熱する場合について説明したが、ステップ4とステップ5は逆でもよく、加熱した後に加圧しても良い。
型100のパターンを被成型物200に転写するのに十分な所定の時間経過後、加熱手段17による加熱を停止し、冷却手段によって被成型物200を冷却する。
加圧室12内を大気圧まで減圧した後、加圧室12および真空室181を開放し、被成型物200を型100から離型する。なお、冷却手段として、加圧室12内の気体を冷却気体と置換するものを用いる場合には、冷却と減圧を同時に行うことも可能である。
被成型物200を用意しステージ11上に固定する。この被成型物200の上に、被成型物200に転写したいパターンを反転させたパターンを有するフィルム状の型100を配置する。
脱気手段18によって、型100と被成型物200との間の気体を除去する。例えば、加圧室12を開放した状態で、蛇腹183のシール部材を基台10に当接させて真空室181を形成する。この真空室181内の空気を加圧室12内に設けられた加圧室用気体給排流路161から真空ポンプによって排気する。なお、シール部材には、蛇腹の弾性力によって基台10に当接されるが、別途固定手段で基台に固定するようにしても良い。
加圧室用筐体13を開閉手段15によって型100側に移動し、Oリング(密閉手段14)を型100に当接させて加圧室12を構成する(図4参照)。
加圧手段16によって加圧室12内を加圧し、型100を被成型物200に押圧する。
加熱手段17によって被成型物200を被成型物200が流動可能な温度(例えば、樹脂のガラス転移温度)以上に加熱する。例えば、加圧室用筐体13の天井部に形成された遠赤外線ヒータを用いて、型100や被成型物200を直接加熱すれば良い。なお、加圧した後に加熱する場合について説明したが、ステップ4とステップ5は逆でもよく、加熱した後に加圧しても良い。
型100のパターンを被成型物200に転写するのに十分な所定の時間経過後、加熱手段17による加熱を停止し、冷却手段によって被成型物200を冷却する。
加圧室12内を大気圧まで減圧した後、加圧室12および真空室181を開放し、被成型物200を型100から離型する。なお、冷却手段として、加圧室12内の気体を冷却気体と置換するものを用いる場合には、冷却と減圧を同時に行うことも可能である。
Claims (12)
- 型のパターンをフィルム状の被成型物に転写するためのインプリント装置であって、
前記型を保持するためのステージと、
前記被成型物と共に加圧室を構成する加圧室用筐体と、
前記加圧室用筐体と前記被成型物との間を密閉する密閉手段と、
前記加圧室用筐体と前記被成型物との間を開閉する開閉手段と、
前記加圧室内の気圧を調節する加圧手段と、
前記型と前記被成型物のいずれか一方又は両方を加熱するための加熱手段と、
を具備することを特徴とするインプリント装置。 - フィルム状の型のパターンを被成型物に転写するためのインプリント装置であって、
前記被成型物を保持するためのステージと、
前記型と共に加圧室を構成する加圧室用筐体と、
前記加圧室用筐体と前記型との間を密閉する密閉手段と、
前記加圧室用筐体と前記型との間を開閉する開閉手段と、
前記加圧室内の気圧を調節する加圧手段と、
前記型と前記被成型物のいずれか一方又は両方を加熱するための加熱手段と、
を具備することを特徴とするインプリント装置。 - 前記型と前記被成型物の間の気体を除去する脱気手段を具備することを特徴とする請求項1又は2記載のインプリント装置。
- 前記加熱手段は、電磁波の放射によって加熱するものであることを特徴とする請求項1ないし3のいずれかに記載のインプリント装置。
- 前記加熱手段は、前記加圧室用筐体に所定温度に加熱された気体を供給するものであることを特徴とする請求項1ないし3のいずれかに記載のインプリント装置。
- 前記被成型物を冷却するための冷却手段を具備することを特徴とする請求項1ないし5のいずれかに記載のインプリント装置。
- 所定の成型温度において用いられるフィルム状の型であって、熱可塑性樹脂からなる基層と、前記成型温度において前記樹脂より硬い材料からなり前記基層の成型面側に形成される硬質層と、を有する型を具備することを特徴とする請求項2記載のインプリント装置。
- 型のパターンをフィルム状の被成型物に転写するためのインプリント方法であって、
前記型に対し前記被成型物を気体で直接押圧することを特徴とするインプリント方法。 - フィルム状の型のパターンを被成型物に転写するためのインプリント方法であって、
前記被成型物に対し前記型を気体で直接押圧することを特徴とするインプリント方法。 - 前記型と前記被成型物の間の気体を除去することを特徴とする請求項8又は9記載のインプリント方法。
- 前記型と前記被成型物のいずれか一方又は両方を電磁波の放射によって加熱することを特徴とする請求項8又は9記載のインプリント方法。
- 前記型と前記被成型物のいずれか一方又は両方を所定温度の気体によって加熱することを特徴とする請求項8又は9記載のインプリント方法。
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US12/810,557 US8215944B2 (en) | 2007-12-26 | 2008-12-25 | Imprinting device and imprinting method |
EP08863432.4A EP2239127B1 (en) | 2007-12-26 | 2008-12-25 | Imprinting device and imprinting method |
KR1020107016385A KR101338684B1 (ko) | 2007-12-26 | 2008-12-25 | 임프린트 장치 및 임프린트 방법 |
US13/471,573 US20120223461A1 (en) | 2007-12-26 | 2012-05-15 | Imprinting device and imprinting method |
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JP2007335093A JP4578517B2 (ja) | 2007-12-26 | 2007-12-26 | インプリント装置およびインプリント方法 |
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EP (1) | EP2239127B1 (ja) |
JP (1) | JP4578517B2 (ja) |
KR (1) | KR101338684B1 (ja) |
TW (1) | TW200936350A (ja) |
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Also Published As
Publication number | Publication date |
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EP2239127B1 (en) | 2014-09-10 |
KR101338684B1 (ko) | 2013-12-06 |
TW200936350A (en) | 2009-09-01 |
KR20100110833A (ko) | 2010-10-13 |
TWI482733B (ja) | 2015-05-01 |
EP2239127A4 (en) | 2011-06-22 |
EP2239127A1 (en) | 2010-10-13 |
US20110024948A1 (en) | 2011-02-03 |
JP2009154393A (ja) | 2009-07-16 |
US8215944B2 (en) | 2012-07-10 |
US20120223461A1 (en) | 2012-09-06 |
JP4578517B2 (ja) | 2010-11-10 |
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