WO2011021573A1 - パターン形成方法 - Google Patents
パターン形成方法 Download PDFInfo
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- WO2011021573A1 WO2011021573A1 PCT/JP2010/063719 JP2010063719W WO2011021573A1 WO 2011021573 A1 WO2011021573 A1 WO 2011021573A1 JP 2010063719 W JP2010063719 W JP 2010063719W WO 2011021573 A1 WO2011021573 A1 WO 2011021573A1
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- H10P76/2041—
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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
Definitions
- the present invention relates to a pattern forming method. More specifically, the present invention relates to a pattern forming method using an optical imprint lithography method using a translucent stamper.
- a finer processing technique In order to improve the integration degree and recording density of circuits such as semiconductor elements, a finer processing technique is required.
- a photolithography technique using an exposure process can perform a fine processing of a large area at a time, but does not have a resolution below the wavelength of light.
- photolithography technology using short wavelength light of 193 nm (ArF), 157 nm (F2), and 13.5 nm (EUV) has been developed.
- the wavelength of light becomes shorter, the substances that can be transmitted at that wavelength are limited.
- the resolution does not depend on the wavelength of light and a fine structure can be created, but poor throughput is a problem.
- the resist-coated substrate is heated above the glass transition temperature to soften the resist, so that when the pressed stamper is peeled off from the resist film, the resist film is peeled off with a part of the resist film attached.
- resist film peeling In order to solve this “resist film peeling”, improvement of a stamper has been studied.
- Patent Document 3 below is known.
- Patent Document 4 discloses a pattern forming method in which another material is embedded in a concave portion of a pattern after imprinting and the pattern is inverted.
- Patent Document 3 is a stamper whose surface is fluorinated.
- this method has a problem that the effect of the surface treatment is lost as the number of times of use of the stamper is increased, and if the number of times of use of the stamper is large, "resist film peeling" may occur frequently.
- the resist film (which is a shape-transferring layer referred to in the present invention) has not yet been prevented from peeling off.
- Patent Document 4 discloses a method of etching a substrate to be processed by a RIE (reactive ion etching) method using a pattern after inversion as a mask.
- Patent Document 4 discloses a method of peeling a stamper.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide a pattern forming method capable of suppressing “resist film peeling”.
- a first resin layer forming step (1) for forming a first resin layer mainly composed of an organic polymer on a substrate
- a second resin layer forming step (2) for forming a second resin layer mainly composed of an organic polymer on the surface of the first resin layer
- a recess forming step (3) for forming a recess in the second resin layer by pressing and releasing a stamper having a protrusion on the second resin layer
- a filling part forming step (4) for forming a filling part mainly composed of an inorganic polymer in the concave part
- An etching step (5) for etching the first resin layer and the second resin layer using the filling portion as a mask.
- ⁇ 2> The pattern forming method according to ⁇ 1>, wherein the inorganic polymer is polysiloxane.
- ⁇ 3> The pattern forming method according to ⁇ 1> or ⁇ 2>, wherein the first resin layer is made of a material having an etching rate slower than that of the second resin layer.
- a pattern can be formed while suppressing peeling of the resist film. Further, a residual film in which the resist film is left in the recess formed in the recess forming step is formed, so that an adhesive surface between the first resin layer and the second resin layer is increased, and the resist film is peeled off (first film). The delamination between the first resin film and the second resin film) can be more effectively suppressed. That is, normally, when a process such as etching is performed using a pattern as a mask, the remaining film in the concave portion which is avoided functions advantageously in this method.
- the etching process in step (5) and the pattern obtained by this method are not affected, and precise control of the remaining film in the recesses is unnecessary. It is.
- the inorganic polymer is polysiloxane, it is possible to obtain better selectivity in etching the first resin layer and the second resin layer and the filling portion. Furthermore, since the flatness of the coating film when applied by spin coating is good, when an unnecessary filling portion forming resin layer (a layer made of filling portion forming resin) is removed from the first resin layer. Damage to the filling portion forming resin to be left in the recess can be minimized.
- fever to the 1st resin layer can be suppressed.
- the first resin layer is made of a material whose etching rate is slower than that of the second resin layer, a pattern with a higher aspect ratio can be produced by processing the substrate using the filling portion as a mask.
- throughput can be increased.
- (meth) acryl means acryl and methacryl
- (meth) acrylate means acrylate and methacrylate
- the pattern forming method of the present invention includes a first resin layer forming step (1), a second resin layer forming step (2), a recess forming step (3), and a filling portion forming step (4). And an etching step (5) (see FIGS. 1 and 2).
- the “first resin layer forming step (1)” is a step of forming the first resin layer 31 mainly composed of an organic polymer on the substrate 20.
- the first resin layer is a resin layer containing an organic polymer as a main component.
- the organic polymer as a main component means that the organic polymer (polymer having a carbon skeleton) is 95% by mass or more (100% by mass) when the entire first resin layer is 100% by mass. ) Means contained. That is, in other words, it means that the inorganic polymer described later is not contained, or even if it is contained, it is less than 5% by mass.
- the first resin layer only needs to have an organic polymer as a main component, and the composition thereof is not particularly limited.
- JP 2004-168748 A JP 2005-128509 A, and JP 2007-240630 A. It is preferable to use a resin layer used as a resist underlayer film described in the publication. Furthermore, a first resin layer formed on a substrate using the following first resin layer forming compositions (1) to (3) is preferable.
- the first resin layer forming composition (1) includes (1A) an alkali-soluble resin having a phenolic hydroxyl group, (1B) an acid generator represented by the following formula (1), (1C) a crosslinking agent, Containing.
- each R independently represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, —R 1 OH, —R 2 OR 3 or —R 4 OR 5 OR 6 , and n represents 1 or 2
- each X independently represents a halogen atom.
- R 1 is a methylene group or an alkylene group having 2 to 6 carbon atoms
- R 2 is a methylene group or an alkylene group having 2 to 4 carbon atoms
- R 3 is an alkyl group having 1 to 6 carbon atoms
- R 4 is a methylene group or An alkylene group having 2 to 4 carbon atoms
- R 5 represents a methylene group or an alkylene group having 2 to 6 carbon atoms
- R 6 represents an alkyl group having 1 to 6 carbon atoms.
- n is 1 or 2.
- alkali-soluble resin (1A) examples include novolak resin, polyhydroxystyrene ⁇ hydroxystyrene homopolymer, styrene derivatives such as hydroxystyrene, styrene, vinylbenzoic acid, and (meth) acrylic acid derivatives.
- a copolymer using at least hydroxystyrene ⁇ , a phenol-xylylene glycol condensation resin, and the like are preferable.
- the novolak resin include a phenol / formaldehyde condensation type, a cresol / formaldehyde condensation type, and a phenol-naphthol / formaldehyde condensation type.
- the alkali-soluble resin (1A) has a polystyrene equivalent weight average molecular weight of preferably 2000 or more, and more preferably 2000 to 20000. Further, the content of the alkali-soluble resin (1A) is preferably 30 to 90% by mass, more preferably 40 to 80% by mass with respect to 100% by mass of the entire composition (1) excluding the solvent.
- the acid generator (1B) is a compound having an s-triazine skeleton, and includes 2- (p-methoxystyryl) -4,6-bis (trichloromethyl) -1,3,5-triazine, 2- (m -Methoxystyryl) -4,6-bis (trichloromethyl) -1,3,5-triazine, 2- [4- [2- ⁇ 4,6-bis (trichloromethyl) -1,3,5-triazine- 2-yl ⁇ vinyl] phenoxy] ethanol, 2- [2- (3,4-dimethoxyphenyl) ethenyl] -4,6-bis (trichloromethyl) -1,3,5-triazine, 2- [2- ( 2,4-dimethoxyphenyl) ethenyl] -4,6-bis (trichloromethyl) -1,3,5-triazine and the like.
- the amount of the acid generator (1B) is preferably 0.1 to 10 parts by weight, more preferably 0.3 to 5 parts by weight, and more preferably 0.5 to 3 parts by weight with respect to 100 parts by weight of the alkali-soluble resin (1A). Part is more preferred.
- the crosslinking agent (1C) acts as a crosslinking component (curing component) that reacts with the alkali-soluble resin (1A).
- the cross-linking agent (1C) include compounds having at least two alkyl etherified amino groups in the molecule such as hexamethoxymethyl melamine, hexabutoxymethyl melamine, tetramethoxymethyl glycoluril, tetrabutoxymethylglycoluril, etc.
- a crosslinking agent having an —OR x group (where R x is an n-butyl group or an iso-butyl group) is more preferable.
- the cross-linking agent containing an —OR x group can control the sublimation property of the cross-linking agent (in particular, suppress the sublimation property of the cross-linking agent).
- a gas (under standard conditions) (1-butene, 2-butene, iso-butene) derived from the —OR x group can be generated at the time of thermal decomposition, and this is preferable because contamination at various places can be suppressed.
- crosslinking agent having —OR x group examples include —OR x group-modified glycoluril compound, —OR x group-modified polynuclear phenol, —OR x group-modified amino resin, and the like.
- examples of the —OR x group-modified glycoluril compound include the hexabutoxymethyl melamine and the tetrabutoxymethyl glycoluril.
- the above-mentioned polynuclear phenol is —OR x
- the above-mentioned polynuclear phenol is —OR x
- the —OR x group-modified amino resin include co-condensates of urea, thiourea, ethylene urea, melamine benzoguanamine and the like with formaldehyde, their n-butyl alcohol, and iso-butyl. Alcohol or methyl alcohol processed material etc. are mentioned.
- the amount of the crosslinking agent (1C) is preferably 1 to 100 parts by mass and more preferably 5 to 50 parts by mass with respect to 100 parts by mass of the alkali-soluble resin (1A). Further, when the total of the alkyl etherified compound having an amino group and the oxirane ring-containing compound is 100% by mass, the content of the oxirane ring-containing compound is preferably 50% by mass or less, more preferably 5 to 40% by mass. preferable. In addition, it can contain at least one of adhesion assistants (1D), surfactants (1E), solvents (1F), etc., which will be described later.
- the first resin layer forming composition (2) comprises (2A) a polymer containing one of the structural unit represented by the following formula (2) and the structural unit represented by the following formula (3); 2B) An acid generator and (2C) a crosslinking agent.
- R 1 represents a monovalent organic group
- R 2 and R 3 each independently represent a hydrogen atom or a C 1-6 substitutable alkyl group.
- R 1 represents a monovalent organic group
- R 2 represents a hydrogen atom or a substitutable alkyl group having 1 to 6 carbon atoms
- n is 0 or 1.
- the monovalent organic group as R 1 in the formula (2) includes a substitutable alkyl group having 1 to 6 carbon atoms, a hydroxyl group, an alkoxy group having 1 to 6 carbon atoms, a carbonyl group, and 1 to 6 carbon atoms. And an alkoxymethylol group having 1 to 6 carbon atoms.
- Examples of the substitutable alkyl group having 1 to 6 carbon atoms as R 1 in the formula (2) include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, and a 1-methylpropyl group. 2-methylpropyl group, t-butyl group, n-pentyl group, n-hexyl group and the like.
- examples of the substituent include alkyl groups having 1 to 4 carbon atoms, aryl groups having 6 to 20 carbon atoms, and polar groups other than hydrocarbon groups. Only 1 type may be used for a substituent and it may use 2 or more types together.
- each substituent may be the same and may differ.
- examples of polar groups include alkoxy groups (methoxy groups, ethoxy groups, propoxy groups, butoxy groups, etc.), hydroxy groups, carboxyl groups, oxo groups ( ⁇ O), alkyloxycarbonyl groups, acetoxy groups (—OCOCH 3 ), etc. Is mentioned.
- the alkoxy group having 1 to 6 carbon atoms as R 1 in the formula (2) includes methoxy group, ethoxy group, n-propoxy group, i-propoxy group, n-butoxy group, 1-methylpropoxy group, 2- Examples include a methylpropoxy group, a t-butoxy group, an n-pentyloxy group, and an n-hexyloxy group.
- the alkoxycarbonyl group having 1 to 6 carbon atoms as R 1 in the formula (2) includes a methoxycarbonyl group, an ethoxycarbonyl group, an n-propoxycarbonyl group, an i-propoxycarbonyl group, an n-butoxycarbonyl group, 1- Examples include methylpropoxycarbonyl group, 2-methylpropoxycarbonyl group, t-butoxycarbonyl group, n-pentyloxycarbonyl group, n-hexyloxycarbonyl group and the like.
- the alkoxymethylol group having 1 to 6 carbon atoms as R 1 in the formula (2) includes a methoxymethylol group, an ethoxymethylol group, an n-propoxymethylol group, an i-propoxymethylol group, an n-butoxymethylol group, 1- Examples thereof include a methylpropoxymethylol group, a 2-methylpropoxymethylol group, a t-butoxymethylol group, an n-pentyloxymethylol group, and an n-hexyloxymethylol group.
- the substitutable alkyl group having 1 to 6 carbon atoms as R 2 and R 3 in the formula (2) is the same as the substitutable alkyl group having 1 to 6 carbon atoms as R 1 in the formula (2). Applicable. However, R 2 and R 3 in the formula (2) may be the same or different, and R 2 and R 3 in the formula (2) are the same as R 1 in the formula (2). Or may be different.
- Examples of the monomer that gives the structural unit represented by the formula (2) include hydroxymethylacenaphthylene (3-, 4-, 5-), methoxymethylacenaphthylene (3-, 4-, 5-). -), Acetoxymethylacenaphthylene (3-, 4-, 5-) and the like are preferable. These monomers may use only 1 type and may use 2 or more types together.
- the 1st resin layer excellent in etching tolerance can be obtained.
- the content ratio of the structural unit represented by the formula (2) in the polymer (2A) is preferably 5 to 80 mol% with respect to 100 mol% in total of all the structural units constituting the polymer (2A). 30 to 80 mol% is more preferable, and 50 to 70 mol% is still more preferable.
- the monovalent organic group as R 1 in the formula (2) can be directly applied to the monovalent organic group as R 1 in the formula (3).
- R 1 of each of the formulas (2) and (3) may be the same or may be different.
- the monovalent organic group as R 2 in the formula (2) can be directly applied to the monovalent organic group as R 2 in the formula (3).
- R 2 in Formula (2) and Formula (3) may be the same or different.
- the 1st resin layer excellent in etching tolerance can be obtained.
- the content ratio of the structural unit represented by the formula (3) in the polymer (2A) is preferably 5 to 80 mol% with respect to 100 mol% in total of all the structural units constituting the polymer (2A). 30 to 80 mol% is more preferable, and 50 to 70 mol% is still more preferable.
- the polymer (2A) includes at least one of a structural unit represented by the following formula (4), a structural unit represented by the following formula (5), and a structural unit represented by the following formula (6).
- a structural unit represented by the following formula (4), R 2 and R 3 each independently represent a hydrogen atom or a C 1-6 substitutable alkyl group.
- R 1 represents a hydrogen atom or a C 1-6 substitutable alkyl group
- R 2 represents a hydrogen atom or a methyl group
- X represents a methylene group or a phenylene group.
- R 1 represents a monovalent organic group
- n is an integer of 0 to 3.
- R 2 represents a hydrogen atom or a substitutable alkyl group having 1 to 6 carbon atoms.
- the group can be applied as it is.
- the R 2 and R 3 of the the R 2 and R 3 in the formula (2) (4) may be another same or may be different.
- a hydrogen atom or a methyl group is preferable.
- Examples of the monomer that gives the structural unit represented by the formula (4) include acenaphthylene, 1-methylacenaphthylene, 1,2-dimethylacenaphthylene, and the like.
- These monomers may use only 1 type and may use 2 or more types together.
- the structural unit represented by the formula (4) in the polymer (2A) is included, the content ratio is 5 to 95 with respect to 100 mol% in total of all the structural units constituting the polymer (2A). Mole% is preferable, 10 to 90 mol% is more preferable, and 20 to 80 mol% is still more preferable.
- the substitutable alkyl group having 1 to 6 carbon atoms as R 2 in the formula (5) is the same as the substitutable alkyl group having 1 to 6 carbon atoms as R 2 and R 3 in the formula (2). Applicable. However, the formula (2) and R 2 and R 3 with R 2 of the formula (5) may be each other identical or different. Examples of the monomer that gives the structural unit represented by the formula (5) include N-methylolacrylamide, N-methoxymethylacrylamide, Nn-butoxymethylacrylamide, N-isobutoxymethylacrylamide, dimethylaminopropylmethacrylamide.
- the structural unit represented by the formula (5) in the polymer (2A) the content ratio is 5 to 80 with respect to 100 mol% in total of all the structural units constituting the polymer (2A). Mol% is preferable, 5 to 60 mol% is more preferable, and 5 to 60 mol% is still more preferable.
- the monovalent organic group as R 1 in the formula (2) can be applied as it is.
- the formula (2) is R 1 and the R 1 in the formula (4) may be another same or may be different.
- the substitutable alkyl group having 1 to 6 carbon atoms as R 2 in the formula (6) the substitutable alkyl group having 1 to 6 carbon atoms as R 2 in the formula (3) is applied as it is. it can.
- the formula (3) is R 2 and the R 2 in the formula (6) may be another same or may be different.
- Examples of the monomer that provides the structural unit represented by the formula (6) include styrene, hydroxystyrene, styrene, ⁇ -methylstyrene, 4-methylstyrene, 2-methylstyrene, 3-methylstyrene, and 4-methoxystyrene.
- the content ratio is 0.1% with respect to 100 mol% in total of all the structural units constituting the polymer (2A). -50 mol% is preferable, 1-30 mol% is more preferable, and 3-10 mol% is still more preferable.
- the polystyrene equivalent weight average molecular weight (Mw) of the polymer (2A) measured by gel permeation chromatography is preferably 500 to 10,000, more preferably 2000 to 5,000.
- onium salt compounds including thiophenium salt compounds
- halogen-containing compounds diazoketone compounds, sulfone compounds, sulfonic acid compounds, diazomethane compounds, and the like
- this acid generator (2B) only 1 type may be used and 2 or more types may be used together.
- onium salt compounds examples include 4,7-di-n-butoxynaphthyltetrahydrothiophenium salt compounds, 1- (4-n-butoxynaphthalen-1-yl) tetrahydrothiophenium salt compounds, 1- (6- thiophenium salt compounds such as n-butoxynaphthalen-2-yl) tetrahydrothiophenium salt compound and 1- (3,5-dimethyl-4-hydroxyphenyl) tetrahydrothiophenium salt compound; bis (4-t-butylphenyl) ) Iodonium salt compounds such as iodonium salt compounds and diphenyliodonium salt compounds; triphenylsulfonium salt compounds, 4-t-butylphenyldiphenylsulfonium salt compounds, 4-cyclohexylphenyldiphenylsulfonium salt compounds, 4-methanesulfonylphenyldiphenyl Sulfonium salt compounds such as
- halogen-containing compound examples include haloalkyl group-containing hydrocarbon compounds and haloalkyl group-containing heterocyclic compounds. Specific examples include (trichloromethyl) -s-triazine derivatives.
- diazoketone compound examples include a 1,3-diketo-2-diazo compound, a diazobenzoquinone compound, a diazonaphthoquinone compound, and the like.
- sulfonated product include ⁇ -ketosulfone, ⁇ -sulfonylsulfone, and ⁇ -diazo compounds of these compounds.
- Examples of the sulfonic acid compounds include alkyl sulfonic acid esters, haloalkyl sulfonic acid esters, aryl sulfonic acid esters, and imino sulfonates.
- Examples of the diazomethane compound include bis (trifluoromethylsulfonyl) diazomethane, bis (cyclohexylsulfonyl) diazomethane, bis (phenylsulfonyl) diazomethane, bis (p-toluenesulfonyl) diazomethane, methylsulfonyl-p-toluenesulfonyldiazomethane, cyclohexylsulfonyl- Examples include 1,1-dimethylethylsulfonyldiazomethane, bis (1,1-dimethylethylsulfonyl) diazomethane, and the like.
- the blending amount of the acid generator (2B) is preferably 0.1 to 10 parts by mass, more preferably 0.3 to 5 parts by mass, and 0.5 to 3 parts by mass with respect to 100 parts by mass of the polymer (2A). Is more preferable.
- the (1C) crosslinking agent can be applied as it is.
- the amount of the crosslinking agent (2C) is preferably 1 to 100 parts by weight, more preferably 5 to 50 parts by weight, based on 100 parts by weight of the polymer (2A).
- it is the same as the composition (1) that it can contain at least one of an adhesion assistant (1D), a surfactant (1E), a solvent (1F) and the like which will be described later.
- the first resin layer forming composition (3) is (3A) a structural unit represented by the following formula (7), a structural unit represented by the following formula (8), and a structure represented by the following formula (10).
- a polymer containing a unit, (3B) an acid generator, and (3C) a crosslinking agent are contained.
- R 1 to R 4 each independently represents a hydrogen atom, a hydroxyl group, a substitutable alkyl group having 1 to 20 carbon atoms, a substitutable alkoxy group having 1 to 20 carbon atoms, a carbon number Represents an alkoxycarbonyl group having 1 to 20 carbon atoms, an acetoxy group, an aryl group having 6 to 10 carbon atoms, an isocyanate group or a glycidyl ether group;
- R 5 to R 8 each independently represents a hydrogen atom, a hydroxyl group, a substitutable alkyl group having 1 to 20 carbon atoms, a substitutable alkoxy group having 1 to 20 carbon atoms, a carbon number Represents an alkoxycarbonyl group having 1 to 20 carbon atoms, an acetoxy group, an aryl group having 6 to 10 carbon atoms, an isocyanate group, a glycidyl ether group, or
- R 9 represents an alkylene group having 1 to 4 carbon atoms
- R 10 represents a group having a cyclic structure having 4 to 20 carbon atoms.
- R 11 represents an alicyclic hydrocarbon group having 4 to 20 carbon atoms.
- the substitutable alkyl group having 1 to 20 carbon atoms as R 1 to R 4 in the formula (7) includes a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, 1- Examples thereof include a methylpropyl group, a 2-methylpropyl group, a t-butyl group, an n-pentyl group, and an n-hexyl group.
- examples of the substituent include alkyl groups having 1 to 4 carbon atoms, aryl groups having 6 to 20 carbon atoms, and polar groups other than hydrocarbon groups. Only 1 type may be used for a substituent and it may use 2 or more types together.
- each substituent may be the same and may differ.
- examples of polar groups include alkoxy groups (methoxy groups, ethoxy groups, propoxy groups, butoxy groups, etc.), hydroxy groups, carboxyl groups, oxo groups ( ⁇ O), alkyloxycarbonyl groups, acetoxy groups (—OCOCH 3 ), etc. Is mentioned.
- Examples of the substitutable alkoxy group having 1 to 20 carbon atoms as R 1 to R 4 in the formula (7) include methoxy group, ethoxy group, n-propoxy group, i-propoxy group, n-butoxy group, 1- Examples thereof include a methylpropoxy group, a 2-methylpropoxy group, a t-butoxy group, an n-pentyloxy group, and an n-hexyloxy group. Further, as the substituent, the substituent in the substitutable alkyl group having 1 to 20 carbon atoms can be applied as it is.
- the alkoxycarbonyl group having 1 to 20 carbon atoms as R 1 to R 4 in the formula (7) includes a methoxycarbonyl group, an ethoxycarbonyl group, an n-propoxycarbonyl group, an i-propoxycarbonyl group, and an n-butoxycarbonyl group.
- the aryl group having 6 to 10 carbon atoms as R 1 to R 4 in the formula (7) includes a phenyl group, a tolyl group (o-, m-, p-), a naphthyl group (1-, 2-), A phenanthryl group, an anthranyl group, etc. are mentioned.
- Monomers that give the structural unit represented by the formula (7) include phenol, cresol (o-, m-, p-), dimethylphenol (2,3-, 2,5-, 3,4- 3,5-, 2,4-, 2,6-), trimethylphenol (2,3,5-, 3,4,5-), butylphenol (2-t-, 3-t-, 4-t) -), Resorcinol, methylresorcinol (2-, 4-, 5-), catechol, 4-t-butylcatechol, methoxyphenol (2-, 3-), propylphenol (2-, 3-, 4-), Examples thereof include isopropylphenol (2-, 3-, 4-), 2-methoxy-5-methylphenol, 2-tert-butyl-5-methylphenol, pyrogallol, thymol, and isothymol.
- the content ratio of the structural unit represented by the formula (7) in the polymer (3A) is preferably 1 to 30 mol% with respect to 100 mol% in total of all the structural units constituting the polymer (3A). 3 to 25 mol% is more preferable, and 5 to 20 mol% is still more preferable.
- R 1 to R 4 in the above formula (8) as a C 1-20 substitutable alkyl group, a C 1-20 substitutable alkoxy group, a C 1-20 alkoxycarbonyl group, a carbon number 6
- Each group in formula (7) can be applied as it is to the aryl groups of ⁇ 10.
- R 1 to R 4 in the formula (7) and R 5 to R 8 in the formula (8) may be the same as or different from each other.
- Examples of the alkylene group having 1 to 4 carbon atoms as R 9 in the formula (9) include a methylene group, an ethylene group, a propylene group, and an isopropylene group.
- the group having a cyclic structure having 4 to 20 carbon atoms as R 10 in the formula (9) is sufficient if it has a cyclic structure, a monovalent alicyclic hydrocarbon group, a monovalent aromatic group, a monovalent group.
- Groups having a heterocyclic structure of Examples of monovalent alicyclic hydrocarbon groups include alicyclic rings derived from norbornane, tricyclodecane, tetracyclododecane, adamantane, cycloalkanes such as cyclobutane, cyclopentane, cyclohexane, cycloheptane, and cyclooctane. And a monovalent group having.
- alicyclic hydrocarbon groups may or may not have a substituent.
- Substituents having 1 to 4 carbon atoms such as methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, 2-methylpropyl group, 1-methylpropyl group, t-butyl group, etc.
- An alkyl group is mentioned.
- Examples of the monovalent aromatic group include a phenyl group, a tolyl group (o-, m-, p-), a naphthyl group (1-, 2-), a phenanthryl group, and an anthranyl group.
- examples of the group having a monovalent heterocyclic structure include monovalent groups derived from heterocyclic rings such as indole, pyrimidine, piperidine, morpholine, pyran, furan, piperazine, and pyridine.
- R 10 in the formula (9) include the following various groups.
- the bonding positions of R 9 with respect to R 10 are only examples, and are not limited to these bonding positions, and are each other bonding positions. May be.
- the content ratio of the structural unit represented by the formula (8) in the polymer (3A) is preferably 30 to 90 mol% with respect to 100 mol% in total of all the structural units constituting the polymer (3A). It is more preferably 35 to 80 mol%, still more preferably 40 to 75 mol%.
- Examples of the alicyclic hydrocarbon group having 4 to 20 carbon atoms as R 11 in the formula (10) include norbornane, tricyclodecane, tetracyclododecane, adamantane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, and cyclooctane. And divalent groups having an alicyclic ring derived from cycloalkanes and the like. These alicyclic hydrocarbon groups may or may not have a substituent.
- Substituents having 1 to 4 carbon atoms such as methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, 2-methylpropyl group, 1-methylpropyl group, t-butyl group, etc.
- An alkyl group is mentioned.
- Examples of the monomer that gives the structural unit represented by the formula (10) include dicyclopentadiene, bicyclo (4,3,0) nona-3,7-diene, 4-vinylcyclohexene, norbornadiene, 5-vinylnorborna- Examples thereof include unsaturated alicyclic hydrocarbon compounds such as 2-ene, ⁇ -pinene, ⁇ -pinene and limonene. These monomers may use only 1 type and may use 2 or more types together. In the case where isomers exist in these monomers, any isomer may be used, or only one isomer may be used, and a mixture of two or more isomers may be used. It may be used.
- the content of the structural unit represented by the formula (10) in the polymer (3A) is preferably 9 to 60 mol% with respect to a total of 100 mol% of all the structural units constituting the polymer (3A). 10 to 50 mol% is more preferable, and 15 to 45 mol% is still more preferable.
- the polystyrene equivalent weight average molecular weight (Mw) of the polymer (3A) measured by gel permeation chromatography is preferably 1500 to 200000, more preferably 2000 to 10000.
- the method for preparing this polymer (3A) is not particularly limited. Usually, after preparing a copolymer containing the above formula (7) and the above formula (10), the above formula contained in the obtained copolymer is used. It can be obtained by introducing the group represented by the formula (9) into the structural unit of (7) using a compound represented by [HO—R 9 -R 10 ].
- the (2B) acid generator can be applied as it is, and further, bis-O- (p-toluenesulfonyl) - ⁇ -dimethylglyoxime, bis-O- (camphorsulfonyl) Glyoxime derivatives such as - ⁇ -dimethylglyoxime can be used.
- These acid generators (3B) may use only 1 type, and may use 2 or more types together.
- the blending amount of the acid generator (3B) is preferably 0.1 to 10 parts by mass, more preferably 0.3 to 5 parts by mass, and 0.5 to 3 parts by mass with respect to 100 parts by mass of the polymer (3A). Is more preferable.
- the (1C) crosslinking agent can be applied as it is to the (3C) crosslinking agent.
- the amount of the crosslinking agent (3C) is preferably 1 to 100 parts by weight and more preferably 5 to 50 parts by weight with respect to 100 parts by weight of the polymer (3A).
- it is the same as the composition (1) that it can contain at least one of an adhesion assistant (1D), a surfactant (1E), a solvent (1F) and the like which will be described later.
- the adhesion aid (1D) is not particularly limited as long as it is a component that can improve the adhesion between the first resin layer and the substrate.
- the adhesion assistant (1D) include a functional silane coupling agent having a reactive substituent such as a carboxyl group, a methacryloyl group, an isocyanate group, and an epoxy group.
- trimethoxysilylbenzoic acid ⁇ -methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, vinyltrimethoxysilane, ⁇ -isocyanatopropyltriethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -(3,4-epoxycyclohexyl) ethyltrimethoxysilane, 1,3,5-N-tris (trimethoxysilylpropyl) isocyanurate and the like.
- adhesion assistants may be used alone or in combination of two or more.
- the blending amount thereof is the alkali-soluble resin (1A) of the composition (1), the polymer (2A) of the composition (2), or the weight of the composition (3).
- the amount is preferably 0.2 to 10 parts by mass, more preferably 0.5 to 8 parts by mass with respect to 100 parts by mass of the combined (3A).
- the surfactant (1E) is not particularly limited as long as it can adjust coating properties, striations, wettability, developability, and the like.
- this surfactant (1E) polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene-n-octylphenyl ether, polyoxyethylene-n-nonylphenyl ether, polyethylene glycol Nonionic surfactants such as dilaurate and polyethylene glycol distearate, and the following trade names: KP341 (manufactured by Shin-Etsu Chemical Co., Ltd.), Polyflow No. 75, no.
- surfactants (1E) may be used alone or in combination of two or more.
- the blending amount thereof is the alkali-soluble resin (1A) of the composition (1), the polymer (2A) of the composition (2), or the weight of the composition (3).
- the amount is preferably 15 parts by mass or less and more preferably 0.001 to 10 parts by mass with respect to 100 parts by mass of the combined (3A).
- the solvent (1F) is not particularly limited as long as it can dissolve the components constituting the first resin layer forming composition.
- the solvent (1F) include ethylene glycol monoalkyl ethers, ethylene glycol monoalkyl ether acetates, diethylene glycol dialkyl ethers, triethylene glycol dialkyl ethers, propylene glycol monoalkyl ethers, propylene glycol dialkyl ethers, propylene glycol Monoalkyl ether acetates, lactic acid esters, aliphatic carboxylic acid esters, other esters (ethyl hydroxyacetate, ethyl 2-hydroxy-2-methylpropionate, methyl 2-hydroxy-3-methylbutyrate, ethyl methoxyacetate) Methyl 3-methoxypropionate, 3-methoxypropyl acetate, 3-methyl-3-methoxybutylpropionate, methyl acetoacetate, Methyl binate, etc.), aromatic hydrocarbons (tolu
- solvent (1F) may use only 1 type, and may use 2 or more types together.
- the blending amount thereof is the alkali-soluble resin (1A) of the composition (1), the polymer (2A) of the composition (2) or the polymer (2) of the composition (3) ( 3A)
- the amount is preferably 100 to 3000 parts by mass, more preferably 200 to 2000 parts by mass with respect to 100 parts by mass.
- the material of the substrate is not particularly limited, and may be made of only one kind of material, or may be a laminate in which two or more layers of different materials are laminated.
- Examples of the material constituting the substrate include silicon, various metals (such as aluminum), various metal (such as aluminum) sputtered films, alumina, glass epoxy, paper phenol, and glass.
- the thickness of the substrate is not particularly limited, but is usually 1000 to 10,000 nm. Further, the surface of the substrate may be subjected to surface modification or the like as necessary.
- the thickness of the first resin layer formed on the substrate is not particularly limited, but is usually 1 to 1000 nm, preferably 5 to 500 nm, and more preferably 10 to 100 nm.
- substrate is not specifically limited, For example, appropriate means, such as spin coating, cast coating, roll coating, are mentioned. Furthermore, you may volatilize the solvent in a coating film by prebaking (PB) as needed.
- PB prebaking
- the heating conditions for this prebaking are appropriately selected depending on the composition of the first resin layer forming composition, but the heating temperature is usually about 100 to 400 ° C., preferably 150 to 250 ° C. Further, the heating time is usually 10 to 300 seconds, preferably 30 to 90 seconds.
- the “second resin layer forming step (2)” [PR (2) in FIG. 1] is a step of forming the second resin layer 32 mainly composed of an organic polymer on the surface of the first resin layer 31. is there.
- the second resin layer is a resin layer containing an organic polymer as a main component.
- the main component of the organic polymer means that the organic polymer is contained in an amount of 95% by mass or more (or 100% by mass) when the entire second resin layer is 100% by mass. . That is, in other words, it means that the inorganic polymer described later is not contained, or even if it is contained, it is less than 5% by mass.
- the second resin layer is a layer that can follow the surface shape of the stamped stamper and transfer the shape. Other properties are not limited, but a radiation-sensitive resin layer can be used.
- this 2nd resin layer the 2nd resin formed on the 1st resin layer using the composition for 2nd resin layer formation containing a polymerizable unsaturated compound and a radiation sensitive polymerization initiator A layer is preferred.
- the polymerizable unsaturated compound may be an unsaturated compound that can be polymerized by exposure in the presence of a radiation-sensitive polymerization initiator, and the type thereof is not particularly limited, but (meth) acrylic acid esters are preferable. These (meth) acrylic acid esters may be monofunctional, bifunctional, or trifunctional or higher, and these may be used alone or in combination of two or more.
- Examples of the monofunctional (meth) acrylic acid esters include 2-hydroxyethyl (meth) acrylate, diethylene glycol monoethyl ether (meth) acrylate, isobornyl (meth) acrylate, butyl (meth) acrylate, and 3-methoxybutyl (meth) Acrylate, (2- (meth) acryloyloxyethyl) (2-hydroxypropyl) phthalate and the like. These may use only 1 type and may use 2 or more types together.
- bifunctional (meth) acrylic acid esters examples include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 1 , 9-nonanediol di (meth) acrylate, bisphenoxyethanol full orange (meth) acrylate, polyester both-end (meth) acryl-modified compound, polypropylene glycol both-end (meth) acryl-modified compound, polytetramethylene glycol both-end (meth) An acrylic modified compound etc. are mentioned. These may use only 1 type and may use 2 or more types together.
- trifunctional or higher functional (meth) acrylic acid esters examples include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, di Examples include pentaerythritol hexa (meth) acrylate, tri (2- (meth) acryloyloxyethyl) phosphate, and the like. These may use only 1 type and may use 2 or more types together.
- the kind of the radiation sensitive polymerization initiator is not particularly limited.
- Examples of the radiation sensitive polymerization initiator include 2,2-dimethoxy-1,2-diphenylethane-1-one, 2-hydroxy-2-methyl-1-phenylpropan-1-one, and 1-hydroxy-cyclohexylphenyl.
- the blending amount of the radiation-sensitive polymerization initiator is not particularly limited, but is preferably 0.01 to 30% by mass, more preferably 0.1 to 20% by mass with respect to the entire second resin film forming composition. More preferred is 15% by mass.
- the thickness of the second resin layer formed on the first resin layer is not particularly limited, but is usually 1 to 1000 nm, preferably 5 to 500 nm, and more preferably 10 to 100 nm.
- coating the composition for 2nd resin layer formation on the 1st resin layer is not specifically limited, For example, appropriate means, such as spin coating, cast coating, roll coating, are mentioned. Furthermore, you may volatilize the solvent in a coating film by prebaking (PB) as needed.
- the prebaking heating conditions are appropriately selected depending on the composition of the second resin layer forming composition, but the heating temperature is usually about 30 to 150 ° C, preferably 50 to 130 ° C. Further, the heating time is usually 10 to 300 seconds, preferably 30 to 90 seconds.
- the stamper 10 having the convex portion 11 is pressed and detached from the second resin layer 32, and then the second step. This is a step of forming a recess 321 in the resin layer 32.
- the second resin layer may or may not be penetrated by the pressure contact of the stamper, but among these, it is preferable not to penetrate the second resin layer.
- the adhesion surface between the first resin layer and the second resin layer is increased, and the adhesion between them is increased, The resist peeling between the first resin film and the second resin film can be suppressed.
- the thickness (remaining film thickness) of the bottom of the recess to be formed is not particularly limited, but is preferably 1 nm or more, more preferably 3 to 500 nm, and further preferably 5 to 150 nm.
- the press contact and desorption conditions of the stamper with respect to the second resin layer are not particularly limited as long as the recess can be formed in the second resin layer, but the press contact pressure is preferably 0.1 MPa or more (100 MPa or less), 0.1 ⁇ 50 MPa is more preferable. Further, the pressing time is preferably 1 second or more (600 seconds or less), more preferably 1 to 300 seconds. Moreover, the said press-contact and desorption should just be able to form a recessed part in a 2nd resin layer, may be performed only once, and may be performed twice or more.
- the “stamper (10)” has a convex portion 11 for transfer on the surface thereof, and after pressing the stamper 10 against the second resin layer 32, the stamper 10 is detached so as to correspond to the convex portion 11 of the stamper 10.
- the recessed portion 321 thus formed can be formed (transferred) on the surface of the second resin layer 32.
- This stamper 10 may or may not be transparent to radiation.
- the stamper 10 is exposed in a state of being pressed against the second resin layer 32 [in FIG. PR (3-2 ′) exposure step can be provided], whereby the convex portion 11 of the stamper 10 can be more easily transferred to the second resin layer 32.
- the transmittance for radiation is not particularly limited, but the transmittance is preferably 70% or more with respect to desired radiation (the radiation that the radiation-sensitive polymerization initiator can function), and is preferably 75 to 100%. Is more preferable, and 80 to 100% is still more preferable.
- the second resin layer 32 may be completely cured by exposure. Further, after being incompletely cured, complete curing may be performed by heating in a later step.
- the type of radiation used for exposure is not particularly limited, and radiation such as charged particle beams such as visible light, ultraviolet light, far ultraviolet light, X-rays, and electron beams ⁇ ArF excimer laser (wavelength 193 nm) or KrF excimer laser (wavelength 248 nm), etc. Including ⁇ can be used.
- This stamper only needs to have mechanical properties as a stamper, and can further have transparency to radiation as described above. From such a viewpoint, a light-transmitting inorganic material is particularly preferable as the material constituting the stamper.
- a quartz material ⁇ quartz (single crystal, polycrystal), various glasses (quartz glass, fluoride glass, calcium phosphate glass, borate glass, borosilicate glass, etc.) ⁇ , Silicon, spinel, corundum, sapphire and the like.
- a functional layer can be provided on the surface of the stamper (surface having a convex portion) as necessary.
- a release layer As the functional layer, a release layer, an ionization suppressing layer, an adhesion improving layer ⁇ a layer for improving adhesion between various layers (such as an interlayer between a stamper and a translucent electrode layer) ⁇ , a thermal diffusion layer, various optical functions Examples include a layer ⁇ reflection suppression, a refractive index control layer, a light transmission improving layer (made of silicon oxide), etc. ⁇ , an insulating layer, and the like. These various layers may use only 1 type and may use 2 or more types together. That is, for example, each layer may have only one layer or may have a multilayer structure of two or more layers.
- the thickness of each functional layer is not particularly limited, but the thickness of each layer is preferably 1 to 100 nm, more preferably 1 to 50 nm, and particularly preferably 1 to 20 nm.
- the release layer is a layer for facilitating separation of the stamper and the second resin film.
- the release layer it is preferable that the release layer is disposed on a part or the entire surface of the convex portion of the stamper.
- a silane compound having a halogenated organic group such as a halogenated alkyl group
- a release layer composed of an organic monomolecular film self-assembled so that the halogenated organic group is located on the surface can be obtained.
- silane compound examples include 3,3,3-trifluoropropyl group, tridecafluoro-1,1,2,2-tetrahydrooctyl group, heptadecafluoro-1,1,2,2-tetrahydrodecyl group, Examples include trichlorosilane and trialkoxysilane (such as trimethoxysilane and triethoxysilane) having various halogenated organic groups such as 3,3,4,4,5,5,6,6,6-nonafluorohexyl group.
- perfluorodecyltrichlorosilane, octadecyltrichlorosilane, dimethyldichlorosilane, and the like can be given. These may use only 1 type and may use 2 or more types together.
- the ionization suppressing layer can be formed of a light-transmitting inorganic material such as a nitride, an oxide, an oxynitride, or a hydrogenated nitride.
- a light-transmitting inorganic material such as a nitride, an oxide, an oxynitride, or a hydrogenated nitride.
- nitrides silicon nitride, aluminum nitride, indium nitride, gallium nitride, tin nitride, boron nitride, chromium nitride, silicon nitride carbide, etc .; as oxides, indium oxide, tin oxide, indium tin oxide, aluminum oxide, oxide Germanium, silicon oxide, zinc oxide, zirconium oxide, titanium oxide, yttrium oxide, erbium oxide, cerium oxide, tantalum oxide, hafnium oxide, etc .; oxy
- the “filling portion forming step (4)” (PR (4-1) to (4-2) in FIG. 2) is a step of forming the filling portion 33 mainly composed of an inorganic polymer in the recess 321. .
- This filling part is a part mainly composed of an inorganic polymer.
- the phrase “mainly composed of an inorganic polymer” means that the inorganic polymer is contained in an amount of 90% by mass or more (or 100% by mass) when the entire filling portion is 100% by mass. That is, in other words, it means that the organic polymer is not contained, or even if it is contained, it is less than 10% by mass.
- This filling portion is a portion having an etching selectivity with respect to the first resin layer and the second resin layer mainly containing an organic polymer by containing an inorganic polymer as a main component. .
- the inorganic polymer constituting the filling portion is a polymer whose skeleton is formed of an inorganic element.
- inorganic elements examples include Si, Ti, Al, Zr and the like. Of these, Si is preferable, and the inorganic polymer is more preferably polysiloxane.
- a filling part formed by using a composition for forming a filling part containing a polysiloxane containing a structural unit represented by the following formula (12) and a structural unit represented by the following formula (13) and a solvent Preferably there is.
- R 1 represents an alkyl group having 1 to 4 carbon atoms, and n is an integer of 1 to 4.
- the alkyl group having 1 to 4 carbon atoms of R 1 in the formula (12) may be linear or branched.
- R 1 in the formula (12) is, for example, methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, 2-methylpropyl group, 1-methylpropyl group, t-butyl group, etc. Can be mentioned.
- Examples of the monomer that gives the structural unit represented by the formula (12) include silane compounds represented by the following formula (14).
- R 1 represents an alkyl group having 1 to 4 carbon atoms
- R 2 represents an alkyl group having 1 to 4 carbon atoms
- n is an integer of 1 to 4.
- R 1 in the formula (12) can be applied as it is to R 1 in the formula (14).
- R 1 and R 2 may be the same or different.
- the three R 2 in the formula (14) may be the same or different from each other.
- Examples of the silane compound represented by the formula (14) include 3- (trimethoxysilyl) propyl methacrylate, 3- (triethoxysilyl) propyl methacrylate, N-3- (methacryloxy-2-hydroxypropyl) -3-amino.
- Examples of the monomer that gives the structural unit represented by the formula (13) include a silane compound represented by the following formula (15). Si (OR 1 ) 4 (15) In [Equation (15), R 1 represents a monovalent organic group. ]
- Examples of the monovalent organic group for R 1 in the formula (15) include an alkyl group and an aromatic group.
- the four R 1 s in the formula (15) may be the same as or different from each other.
- These monovalent organic groups may be substituted or unsubstituted.
- Examples of the monovalent alkyl group include a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, and a tert-butyl group.
- examples of the substituted monovalent alkyl group include ⁇ -aminopropyl group, ⁇ -glycidoxypropyl group, and ⁇ -trifluoropropyl group.
- Examples of the monovalent aromatic group include a phenyl group and a benzyl group.
- Examples of the silane compound represented by the formula (15) include tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetra-iso-propoxysilane, tetra-n-butoxysilane, tetra-sec-butoxysilane, tetra -Tert-butoxysilane, tetraphenoxysilane, tetrachlorosilane, tetraacetoxysilane, tetraisocyanatosilane, tetrakis (butoxyethoxyethoxy) silane, tetrakis (dimethylsiloxy) silane, tetrakis (ethoxyethoxy) silane, tetrakis (2-ethylhexyl) Siloxy) silane, tetrakis (2-methacryloxyethoxy) silane, tetrakis (methoxy
- the polysiloxane constituting the filling portion forming composition may contain other structural units in addition to the structural unit represented by the formula (12) and the structural unit represented by the formula (13). .
- the structural unit represented by following formula (16) and the structural unit represented by following formula (17) are mentioned. These structural units may contain only 1 type and may contain 2 or more types.
- R 1 represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 5 carbon atoms, or —OR 2
- R 2 represents an alkyl group having 1 to 5 carbon atoms.
- R 1 represents an alkyl group having 1 to 4 carbon atoms.
- the alkyl group having 1 to 5 carbon atoms in R 1 of the formula (16) may be linear or branched.
- Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, a 2-methylpropyl group, a 1-methylpropyl group, a t-butyl group, and a pentyl group.
- R 1 is —OR 2
- R 1 in the same formula can be applied as it is as the alkyl group having 1 to 5 carbon atoms of R 2 .
- R 1 and R 2 may be the same or different.
- the structural unit represented by the formula (16) may be contained in the polysiloxane only in one kind or in two or more kinds.
- Examples of the monomer that gives the structural unit represented by the formula (16) include a silane compound represented by the following formula (18).
- R 1 represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 5 carbon atoms, or —OR 2
- R 2 represents an alkyl group having 1 to 5 carbon atoms
- R 3 represents Represents a monovalent organic group.
- R 1 and R 2 in the formula (18) the description of R 1 and R 2 in the formula (16) can be applied as it is. Furthermore, the explanation of R 1 in the formula (15) can be applied as it is to R 3 in the formula (18).
- silane compound represented by the formula (18) examples include 2-methylphenyltrimethoxysilane, 2-methylphenyltriethoxysilane, 2-methylphenyltri-n-propoxysilane, 2-methylphenyltri-iso-propoxy.
- Silane 2-methylphenyltri-n-butoxysilane, 2-methylphenyltri-sec-butoxysilane, 2-methylphenyltri-tert-butoxysilane, 2-methylphenyltrichlorosilane, 2-methylphenyltriacetoxysilane, 4-methylphenyltrimethoxysilane, 4-methylphenyltriethoxysilane, 4-methylphenyltri-n-propoxysilane, 4-methylphenyltri-iso-propoxysilane, 4-methylphenyltri-n-butoxysilane, 4 -Methylph Nyltri-sec-butoxysilane, 4-methylphenyltri-tert-butoxysilane, 4-methylphenyltrichlorosilane, 4-methylphenyltriacetoxysilane, 2-ethylphenyltrimethoxysilane, 2-ethylphenyltriethoxysilane, 2 -Ethylphenyltri-n
- the alkyl group having 1 to 4 carbon atoms in R 1 of the formula (17) may be linear or branched.
- Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, a 2-methylpropyl group, a 1-methylpropyl group, a t-butyl group, and a pentyl group.
- the structural unit represented by Formula (17) may be contained in polysiloxane only by 1 type, and may be contained 2 or more types.
- Examples of the monomer that gives the structural unit represented by the formula (17) include a silane compound represented by the following formula (19).
- R 1 Si (OR 2 ) 3 (19) [In the formula (19), R 1 represents a linear or branched alkyl group having 1 to 4 carbon atoms, and R 2 represents a monovalent organic group. ]
- R 1 in the formula (19) the description of R 1 in the formula (16) can be applied as it is.
- R 3 in the formula (18) can be applied to R 2 in the formula (19) as it is.
- Examples of the silane compound represented by the formula (19) include methyltrimethoxysilane, methyltriethoxysilane, methyltri-n-propoxysilane, methyltri-iso-propoxysilane, methyltri-n-butoxysilane, methyltri-sec-butoxy.
- silane compounds methyltrimethoxysilane, methyltriethoxysilane, methyltri-n-propoxysilane, methyltri-iso-propoxysilane, methyltri-n-butoxysilane, methyltri-sec-butoxysilane, ethyltrimethoxysilane , Ethyltriethoxysilane, ethyltri-n-propoxysilane, ethyltri-iso-propoxysilane, ethyltri-n-butoxysilane, ethyltri-sec-butoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, n- Propyltri-n-propoxysilane, n-propyltri-iso-propoxysilane, n-propyltri-n-butoxysilane, n-propyltri-sec-butoxysilane
- the polysiloxane constituting the filling portion forming composition may be other A structural unit can be further included.
- each structural unit which uses the following each compound as a monomer is mentioned. These other structural units may be used alone or in combination of two or more. Examples of the compound that gives another structural unit include dimethyldimethoxysilane, diethyldimethoxysilane, dipropyldimethoxysilane, diphenyldimethoxysilane, (3-acryloxypropyl) methyldimethoxysilane, di-tert-butyldichlorosilane, and diethoxy.
- the content ratio of the structural unit represented by the formula (12) is, when the total of all the structural units included in the polysiloxane is 100 mol%,
- the content is preferably 1 to 50 mol%, more preferably 1 to 30 mol%, still more preferably 5 to 10 mol%.
- the filling portion has excellent adhesion, and also has excellent durability when used as a mask.
- the content ratio of the structural unit represented by the formula (13) is, when the total of all the structural units included in the polysiloxane is 100 mol%, It is preferably 50 to 99 mol%, more preferably 50 to 80 mol%, still more preferably 50 to 60 mol%. In this range, the durability when used as a mask is excellent, and the storage stability of the filling portion forming composition is also excellent.
- the content ratio of the structural unit represented by the formula (16) in the polysiloxane constituting the filling portion forming composition is, when the total of all the structural units included in the polysiloxane is 100 mol%, It is preferably 10 mol% or less, more preferably 0 to 7 mol%, still more preferably 0 to 5 mol%.
- the content of the structural unit represented by the formula (17) in the polysiloxane constituting the filling portion forming composition is preferably 50 mol% or less, more preferably 1 to 40 mol%, and further Preferably, it is 1 to 30 mol%.
- the content ratio of the other structural units is 10 mol% or less when the total of all the structural units contained in the polysiloxane is 100 mol%. It is preferably 1 to 8 mol%, more preferably 1 to 5 mol%.
- the weight average molecular weight in terms of polystyrene measured by GPC of the polysiloxane constituting the filling portion forming composition is preferably 500 to 100,000, more preferably 1,000 to 50,000, and still more preferably 1,000 to 10,000.
- the silanol abundance ratio in the polysiloxane constituting the filling portion forming composition is preferably 1 to 2 times, more preferably 1 to 2 times the Si—O—Si bond in the inorganic polymer. 1.7 times, more preferably 1 to 1.5 times. When the silanol abundance ratio is 1 to 2 times, the storage stability is particularly good.
- the silanol abundance ratio is measured by Si 29 -NMR.
- the polysiloxane which comprises the said various composition for filling part formation may be contained only 1 type in the composition for filling part formation, and may be contained 2 or more types.
- the solvent constituting the filling portion forming composition is not particularly limited as long as it can dissolve the polysiloxane and does not dissolve the second resin layer.
- alcohols, ethers, esters, and the like, and those containing these are preferable, and alcohols are particularly preferable.
- these solvents may use only 1 type and may use 2 or more types together.
- the blending amount of the solvent is not particularly limited, but is preferably 20 to 10,000 parts by mass, more preferably 30 to 5000 parts by mass with respect to 100 parts by mass of the polysiloxane.
- the alcohol is preferably an alcohol having 2 to 10 carbon atoms.
- the alcohol having 2 to 10 carbon atoms may be linear or branched.
- Examples of the alcohol include 1-butanol, 2-butanol, pentanol, cyclopentanol, hexanol, cyclohexanol, 4-methyl-2-pentanol, heptanol, cycloheptanol, propylene glycol monomethyl ether, propylene glycol monoethyl ether And propylene glycol monopropyl ether.
- the ether include diethyl ether, dipropyl ether, dibutyl ether, dipentyl ether, diisopentyl ether and the like.
- the ester examples include methyl lactate, ethyl lactate, and propylene glycol monomethyl ether acetate.
- the filler forming composition may contain other additives such as a surfactant and a crosslinking agent.
- the method for forming the filling portion is not particularly limited, but usually, the filling portion forming composition is applied onto the second resin layer having the recesses to form a film.
- the coating method in this case is not particularly limited, and examples thereof include appropriate means such as spin coating, cast coating, and roll coating. Furthermore, you may volatilize the solvent in a coating film by prebaking (PB) as needed.
- PB prebaking
- the heating conditions for this pre-baking are appropriately selected depending on the composition of the filling portion forming composition, but the heating temperature is usually about 60 to 180 ° C., preferably 80 to 150 ° C. Further, the heating time is usually 10 to 300 seconds, preferably 30 to 180 seconds.
- a step of removing a part of the surface of the filling portion (step of flattening) [PR (4-2) in FIG. 2] is performed in order to reveal the pattern of the second resin layer 32.
- the removal method is not particularly limited, but an etching method such as dry etch back or wet etch back, a CMP method, or the like can be used. Of these, dry etch back and CMP are preferable.
- the “etching step (5)” [PR (5-1) to (5-2) in FIG. 2] is a step of etching the first resin layer 31 and the second resin layer 32 using the filling portion 33 as a mask. is there.
- etching may be performed in any way, but dry etching (a method of physically or chemically etching under reduced pressure) is preferable, and further, reactive ion etching (RIE). Is more preferable.
- the first resin layer and the second resin layer are mainly composed of an organic polymer, whereas the filling portion is composed mainly of an inorganic polymer, so that the etching rate in dry etching can be varied.
- the filling portion can function as a mask for the first resin layer and the second resin layer.
- the source gas for dry etching is not particularly limited, but includes oxygen atoms such as O 2 , CO, and CO 2 , inert gases such as He, N 2 , and Ar, and chlorine atoms such as Cl 2 and BCl 2.
- oxygen atoms such as O 2 , CO, and CO 2
- inert gases such as He, N 2 , and Ar
- chlorine atoms such as Cl 2 and BCl 2.
- a gas containing hydrogen, H 2 , NH 2 gas, or the like can be used. These gases may use only 1 type and may use 2 or more types together.
- the etching rate for each of the first resin layer and the second resin layer is not particularly limited, and each etching rate may be the same or different. If they are different, either etching rate may be high, but the etching rate of the first resin layer is slower than the etching rate of the second resin layer [PR (5-1) to (5 in FIG. -2)] is preferred. In this case, when processing the substrate to be processed, it is possible to form a pattern (mask) having better etching resistance (mask resistance).
- Etch rate ratio the can be a suitably the composition and use of the etching technique of each resin layer, in particular, the etch rate was S 1 for the first resin layer, the etching rate for the second resin layer was S 2
- S 1 / S 2 is preferably 1 to 3, more preferably 1.5 to 3, and more preferably 2 to 3. It is particularly preferred.
- the etching rate is a value measured by the following method. That is, the first resin film and the second resin film are formed with an arbitrary film thickness (film thickness before processing), and etching is performed based on a difference from a film thickness (film thickness after processing) after etching is performed under arbitrary conditions. Measure by calculating the speed.
- the first resin layer forming step (1), the second resin layer forming step (2), the concave portion forming step (3), the filling portion forming step (4), and the etching step (5) can be provided.
- a mask removing step (7) [PR (7) in FIG. 3] for removing the mask (filling portion, second resin layer and first resin layer) can be provided.
- Each of these other processes may use only 1 type and may use 2 or more types together.
- Preparation Example 1 Preparation of first resin layer forming composition 100 parts by mass of an alkali-soluble resin (1A) having the following phenolic hydroxyl group, 1.0 part by mass of a thermal acid generator (1B), and 25 crosslinker (1C) A composition for forming the first resin layer is prepared by dissolving, in 400 parts by mass of the solvent (1F), 2.5 parts by mass of the adhesion promoter (1D) and 0.2 parts by mass of the surfactant (1E). Prepared.
- Preparation Example 2 Preparation of second resin film forming composition 100 parts by weight of butyl methacrylate, 50 parts by weight of 1,6-hexanediol dimethacrylate, 25 parts by weight of 2,4,6-trimethylbenzoyl-phenyl-phosphine oxide Were mixed and stirred uniformly to obtain a second resin film-forming composition.
- Preparation Example 3 Preparation of filling portion forming composition 0.54 g of maleic anhydride was dissolved by heating in 10.8 g of water to prepare an aqueous maleic acid solution. Next, 18.71 g of tetraethoxysilane and 53.5 g of propylene glycol monopropyl ether were placed in the flask. A cooling tube and a dropping funnel containing the previously prepared maleic acid aqueous solution were set in the flask, heated at 100 ° C. in an oil bath, and then slowly dropped with the maleic acid aqueous solution at 4 ° C. Reacted for hours.
- reaction product polysiloxane having a weight average molecular weight of 2100.
- the solid content in the obtained reaction product was 15.7% as a result of measurement by a firing method.
- the weight average molecular weight of the obtained product was 2100. 14.89 g of the reaction product obtained as described above was dissolved in 30.79 g of propylene glycol monoethyl ether, and this solution was further filtered through a filter having a pore size of 0.2 ⁇ m to obtain a filling part forming composition. It was.
- the weight average molecular weight of the product was measured by a size exclusion chromatography (SEC) method.
- SEC size exclusion chromatography
- a 2-methoxyethanol solution of LiBr—H 3 PO 4 having a concentration of 10 mmol / L was used as a solvent, and 0.1 g of the product was added to 100 cc of 10 mmol / L LiBr—H 3 PO 4 in 2-methoxyethanol. What was dissolved in was used.
- Standard sample polystyrene (manufactured by WAKO), apparatus: high-speed GPC apparatus “HLC-8120GPC” (model name), manufactured by Tosoh Corporation, column: 15 cm long aqueous / polar organic solvent-based GPC column “TSK-GEL SUPER” AWM-H "(manufactured by Tosoh Corporation) is connected in series, and the measurement temperature is 40 ° C., the flow rate is 0.6 ml / min. , Detector: RI (built in the high-speed GPC device).
- Example 1 Example Using First Resin Layer (1) First Resin Layer Forming Step A first resin layer forming composition prepared above is spin-coated on a 6-inch silicon wafer (substrate). Then, heating was performed at 180 ° C. for 1 minute and at 300 ° C. for 1 minute using a hot plate to form a 300 nm-thick first resin layer.
- Second resin layer forming step 10 ⁇ L of the second resin layer forming composition prepared previously is dropped onto the first resin layer obtained up to the above (1), and the second resin layer is formed by spin coating. Formed.
- the second resin layer obtained up to the above (2) has a concavo-convex pattern of 70 nm line (convex width) / 140 nm space (aspect ratio: 1) (that is, convex part of 70 nm line)
- a quartz stamper is pressed at a pressure of 0.4 MPa for 120 seconds, irradiated with light of illuminance of 2.5 mW / cm with a high-pressure mercury lamp for 30 seconds, and then the stamper is detached to remove the second resin layer.
- a recess was formed on the surface.
- the concave portions having a substantially square cross section with a width of 70 nm and a depth of 70 nm were arranged at intervals of 140 nm.
- the concavo-convex pattern arranged in (1) was formed.
- the remaining film thickness (distance from the bottom surface of the recess to the bottom surface of the second resin layer) was 100 nm.
- Etching Step The second resin layer and the first resin layer were etched by reactive ion etching (RIE) under oxygen conditions using the filling portion obtained up to (4) as a mask to form a pattern.
- RIE reactive ion etching
- a cross section of the obtained pattern was observed with a scanning electron microscope (manufactured by Hitachi Keiki Service Co., Ltd., model “S9380”), a concave / convex pattern in which concave portions having a width of 70 nm ⁇ depth of 70 nm were arranged at intervals of 140 nm was obtained. I was able to get it.
- RIE reactive ion etching
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Abstract
Description
一方、電子線リソグラフィや集束イオンビームリソグラフィ等の方法では、分解能が光の波長に依存せず、微細構造の作成が可能であるものの、スループットの悪さが問題となっている。
上述のナノインプリント法においては、これを実現する上で種々の解決すべき問題があるが、そのなかで「レジスト膜のはがれ」という問題がある。ナノインプリント法では、レジストを塗布した基板をガラス転移温度以上に加熱してレジストを軟化させるために、押し付けたスタンパをレジスト膜から剥がす際に、スタンパにレジスト膜の一部が付着したまま剥がれるという不具合を生じることがあり、これを「レジスト膜のはがれ」と称し
ている。この「レジスト膜のはがれ」を解決するためにスタンパの改良が検討されており、例えば、下記特許文献3が知られている。また、特許文献4では、インプリント後のパターンの凹部に別の材料を埋め込み、パターンを反転させるパターン形成方法が開示されている。
一方、特許文献4では、反転後のパターンをマスクとして、被加工基板をRIE(リアクティブイオンエッチング)法などによりエッチングする方法が開示されているが、この特許文献4では、スタンパを剥離する際のレジスト膜の剥がれに起因するパターン破壊は従来に比べて低減されるものの、更に優れたレジスト膜の剥がれ抑制が求められている。
本発明は前記実情に鑑みてなされたものであり、「レジスト膜のはがれ」を抑制できるパターン形成方法を提供することを目的とする。
〈1〉基板上に、有機高分子を主成分とする第1樹脂層を形成する第1樹脂層形成工程(1)と、
前記第1樹脂層の表面に、有機高分子を主成分とする第2樹脂層を形成する第2樹脂層形成工程(2)と、
前記第2樹脂層に凸部を有するスタンパを圧接、脱離して、前記第2樹脂層に凹部を形成する凹部形成工程(3)と、
前記凹部内に無機高分子を主成分とする充填部を形成する充填部形成工程(4)と、
前記充填部をマスクとして、前記第1樹脂層及び前記第2樹脂層をエッチングするエッチング工程(5)と、を備えることを特徴とするパターン形成方法。
〈2〉前記無機高分子は、ポリシロキサンである前記〈1〉に記載のパターン形成方法。
〈3〉前記第1樹脂層は、前記第2樹脂層よりエッチング速度が遅い材料からなる前記〈1〉又は〈2〉に記載のパターン形成方法。
前記無機高分子がポリシロキサンである場合には、第1樹脂層及び第2樹脂層と、充填部とのエッチングにおけるより優れた選択性を得ることができる。更には、スピンコートによる塗布を行った場合の塗膜の平坦性が良いため、第1樹脂層上から不要な充填部形成用樹脂層(充填部形成用樹脂からなる層)を除去する際に、凹部内に残存させるべき充填部形成用樹脂に与えるダメージを最小化できる。また、適度なベーク温度で硬化できるため、第1樹脂層への熱によるダメージを抑制できる。
前記第1樹脂層が前記第2樹脂層よりエッチング速度が遅い材料からなる場合は、充填部をマスクとして基板を加工する場合によりアスペクト比の高いパターンを作製することができる。また、より厳しい条件で加工が可能となるため、スループットを高めることができる。
20;基板、
31;第1樹脂層、
32;第2樹脂層、321;凹部、
33;充填部、33’;充填部形成用樹脂組成物、
PR(1);第1樹脂層形成工程、
PR(2);第2樹脂層形成工程、
PR(3)、PR(3-1)、PR(3-2)、PR(3-3);凹部形成工程、
PR(3-2’);露光工程、
PR(4-1)、PR(4-2);充填部形成工程、
PR(5)、PR(5-1)、PR(5-2);エッチング工程、
PR(6);基板加工工程、
PR(7);マスク除去工程。
本発明のパターン形成方法は、第1樹脂層形成工程(1)と、第2樹脂層形成工程(2)と、凹部形成工程(3)と、充填部形成工程(4)と、エッチング工程(5)と、を備えることを特徴とする(図1及び図2参照)。
前記第1樹脂層は、有機高分子を主成分とする樹脂層である。この有機高分子を主成分とするとは、第1樹脂層全体を100質量%とした場合に、有機高分子(炭素骨格である高分子)が95質量%以上(100質量%であってもよい)含有されることを意味する。即ち、換言すれば、後述する無機高分子は含まれないか、又は、含まれたとしても5質量%未満であることを意味する。
この第1樹脂層は、有機高分子を主成分とすればよく、その組成は特に限定されないが、例えば、特開2004-168748号公報、特開2005-128509号公報および特開2007-240630号公報記載のレジスト下層膜として用いられる樹脂層を用いることが好ましい。更には、下記第1樹脂層形成用組成物(1)~(3)を用いて基板上に形成された第1樹脂層が好ましい。
前記アルカリ可溶性樹脂(1A)のポリスチレン換算重量平均分子量は、2000以上が好ましく、2000~20000がより好ましい。また、アルカリ可溶性樹脂(1A)の含量は、溶剤を除く組成物(1)全体100質量%に対して30~90質量%が好ましく、40~80質量%がより好ましい。
酸発生剤(1B)の配合量は、アルカリ可溶性樹脂(1A)100質量部に対して0.1~10質量部が好ましく、0.3~5質量部がより好ましく、0.5~3質量部が更に好ましい。
この架橋剤(1C)としては、ヘキサメトキシメチルメラミン、ヘキサブトキシメチルメラミン、テトラメトキシメチルグリコールウリル、テトラブトキシメチルグリコールウリル等の分子中に少なくとも2つ以上のアルキルエーテル化されたアミノ基を有する化合物;
フェノールノボラック型エポキシ樹脂、クレゾールノボラック型エポキシ樹脂、ビスフェノール型エポキシ樹脂、トリスフェノール型エポキシ樹脂、テトラフェノール型エポキシ樹脂、フェノール-キシリレン型エポキシ樹脂、ナフトール-キシリレン型エポキシ樹脂、フェノール-ナフトール型エポキシ樹脂、フェノール-ジシクロペンタジエン型エポキシ樹脂、脂環式エポキシ樹脂、脂肪族エポキシ樹脂等のオキシラン環含有化合物;
4,4’-ビフェニルジオール、4,4’-メチレンビスフェノール、4,4’-エチリデンビスフェノール及びビスフェノールA等の2核フェノール類、4,4’,4’’-メチリデントリスフェノール及び4,4’-〔1-{4-(1-[4-ヒドロキシフェニル]-1-メチルエチル)フェニル}エチリデン〕ビスフェノール等の3核フェノール類、ノボラック等のポリフェノール類等の多核フェノール類;
2,3-トリレンジイソシアナート、2,4-トリレンジイソシアナート、3,4-トリレンジイソシアナート、3,5-トリレンジイソシアナート、4,4’-ジフェニルメタンジイソシアナート、ヘキサメチレンジイソシアナート、1,4-シクロヘキサンジイソシアナート等のジイソシアナート類;等が挙げられる。
これらの架橋剤は1種のみを用いてもよく2種以上を併用してもよい。
その他、後述する密着助剤(1D)、界面活性剤(1E)、溶剤(1F)等のうちの少なくとも1種を含有できる。
更に、置換基としては、炭素数1~4のアルキル基、炭素数6~20のアリール基、及び炭化水素基以外の極性基等が挙げられる。置換基は1種のみを用いてもよく2種以上を併用してもよい。また、2種以上の置換基を有する場合には各置換基は同じであってもよく異なっていてもよい。このうち極性基としては、アルコキシ基(メトキシ基、エトキシ基、プロポキシ基、ブトキシ基等)、ヒドロキシ基、カルボキシル基、オキソ基(=O)、アルキルオキシカルボニル基、アセトキシ基(-OCOCH3)等が挙げられる。
前記式(2)のR1としての炭素数1~6のアルコキシカルボニル基には、メトキシカルボニル基、エトキシカルボニル基、n-プロポキシカルボニル基、i-プロポキシカルボニル基、n-ブトキシカルボニル基、1-メチルプロポキシカルボニル基、2-メチルプロポキシカルボニル基、t-ブトキシカルボニル基、n-ペンチルオキシカルボニル基、n-ヘキシルオキシカルボニル基等が挙げられる。
前記式(2)のR1としての炭素数1~6のアルコキシメチロール基には、メトキシメチロール基、エトキシメチロール基、n-プロポキシメチロール基、i-プロポキシメチロール基、n-ブトキシメチロール基、1-メチルプロポキシメチロール基、2-メチルプロポキシメチロール基、t-ブトキシメチロール基、n-ペンチルオキシメチロール基、n-ヘキシルオキシメチロール基等が挙げられる。
重合体(2A)における前記式(2)で表される構成単位の含有割合は、重合体(2A)を構成する全構成単位の合計100モル%に対して、5~80モル%が好ましく、30~80モル%がより好ましく、50~70モル%が更に好ましい。
前記式(3)のR2としての1価の有機基には、前記式(2)のR2としての1価の有機基をそのまま適用できる。但し、式(2)と式(3)のR2は同じであってもよく、異なっていてもよい。
重合体(2A)における前記式(3)で表される構成単位の含有割合は、重合体(2A)を構成する全構成単位の合計100モル%に対して、5~80モル%が好ましく、30~80モル%がより好ましく、50~70モル%が更に好ましい。
前記式(4)で表される構成単位を与える単量体としては、アセナフチレン、1-メチルアセナフチレン、1,2-ジメチルアセナフチレン等が挙げられる。これらの単量体は、1種のみを用いてもよく2種以上を併用してもよい。
重合体(2A)における前記式(4)で表される構成単位が含まれる場合、その含有割合は、重合体(2A)を構成する全構成単位の合計100モル%に対して、5~95モル%が好ましく、10~90モル%がより好ましく、20~80モル%が更に好ましい。
前記式(5)で表される構成単位を与える単量体としては、N-メチロールアクリルアミド、N-メトキシメチルアクリルアミド、N-n-ブトキシメチルアクリルアミド、N-イソブトキシメチルアクリルアミド、ジメチルアミノプロピルメタクリルアミド、N-メトキシメチルメタクリルアミド、N-エトキシメチルメタクリルアミド、N-ブトキシメチルメタクリルアミド、N-イソブトキシメチルメタクリルアミド、N-エトキシメチルアクリルアミド、N-メトキシフェニルアクリルアミド、N-メチロールフェニルアクリルアミド、N-メトキシフェニルメタクリルアミド、N-メチロールフェニルメタクリルアミド等が挙げられる。これらの単量体は、1種のみを用いてもよく2種以上を併用してもよい。
重合体(2A)における前記式(5)で表される構成単位が含まれる場合、その含有割合は、重合体(2A)を構成する全構成単位の合計100モル%に対して、5~80モル%が好ましく、5~60モル%がより好ましく、5~60モル%が更に好ましい。
また、前記式(6)のR2としての炭素数1~6の置換可能なアルキル基としては、前記式(3)のR2としての炭素数1~6の置換可能なアルキル基をそのまま適用できる。但し、前記式(3)のR2と前記式(6)のR2とは互い同じであってもよく、異なっていてもよい。
前記式(6)で表される構成単位を与える単量体としては、スチレン、ヒドロキシスチレン、スチレン、α-メチルスチレン、4-メチルスチレン、2-メチルスチレン、3-メチルスチレン、4-メトキシスチレン、2-ヒドロキシメチルスチレン、3-ヒドロキシメチルスチレン、4-エチルスチレン、4-エトキシスチレン、3,4-ジメチルスチレン、3,4-ジエチルスチレン、2-クロロスチレン、3-クロロスチレン、4-クロロ-3-メチルスチレン、4-t-ブチルスチレン、2,4-ジクロロスチレン、2,6-ジクロロスチレン等が挙げられる。これらの単量体は、1種のみを用いてもよく2種以上を併用してもよい。
重合体(2A)における前記式(6)で表される構成単位が含まれる場合、その含有割合は、重合体(2A)を構成する全構成単位の合計100モル%に対して、0.1~50モル%が好ましく、1~30モル%がより好ましく、3~10モル%が更に好ましい。
前記ジアゾケトン化合物としては、1,3-ジケト-2-ジアゾ化合物、ジアゾベンゾキノン化合物、ジアゾナフトキノン化合物などが挙げられる。
前記スルホン化物としては、β-ケトスルホン、β-スルホニルスルホンや、これらの化合物のα-ジアゾ化合物などが挙げられる。
前記スルホン酸化合物としては、アルキルスルホン酸エステル、ハロアルキルスルホン酸エステル、アリールスルホン酸エステル、イミノスルホネートなどが挙げられる。
前記ジアゾメタン化合物としては、ビス(トリフルオロメチルスルホニル)ジアゾメタン、ビス(シクロヘキシルスルホニル)ジアゾメタン、ビス(フェニルスルホニル)ジアゾメタン、ビス(p-トルエンスルホニル)ジアゾメタン、メチルスルホニル-p-トルエンスルホニルジアゾメタン、シクロヘキシルスルホニル-1,1-ジメチルエチルスルホニルジアゾメタン、ビス(1,1-ジメチルエチルスルホニル)ジアゾメタン等が挙げられる。
前記(2C)架橋剤は、前記(1C)架橋剤をそのまま適用できる。架橋剤(2C)の配合量は、重合体(2A)100質量部に対して、1~100質量部が好ましく、5~50質量部がより好ましい。
その他、後述する密着助剤(1D)、界面活性剤(1E)、溶剤(1F)等のうちの少なくとも1種を含有できることも、前記組成物(1)と同様である。
更に、置換基としては、炭素数1~4のアルキル基、炭素数6~20のアリール基、及び炭化水素基以外の極性基等が挙げられる。置換基は1種のみを用いてもよく2種以上を併用してもよい。また、2種以上の置換基を有する場合には各置換基は同じであってもよく異なっていてもよい。このうち極性基としては、アルコキシ基(メトキシ基、エトキシ基、プロポキシ基、ブトキシ基等)、ヒドロキシ基、カルボキシル基、オキソ基(=O)、アルキルオキシカルボニル基、アセトキシ基(-OCOCH3)等が挙げられる。
前記式(7)のR1~R4としての炭素数1~20の置換可能なアルコキシ基には、メトキシ基、エトキシ基、n-プロポキシ基、i-プロポキシ基、n-ブトキシ基、1-メチルプロポキシ基、2-メチルプロポキシ基、t-ブトキシ基、n-ペンチルオキシ基、n-ヘキシルオキシ基等が挙げられる。更に、置換基としては、前記炭素数1~20の置換可能なアルキル基における置換基をそのまま適用できる。
前記式(7)のR1~R4としての炭素数1~20のアルコキシカルボニル基には、メトキシカルボニル基、エトキシカルボニル基、n-プロポキシカルボニル基、i-プロポキシカルボニル基、n-ブトキシカルボニル基、1-メチルプロポキシカルボニル基、2-メチルプロポキシカルボニル基、t-ブトキシカルボニル基、n-ペンチルオキシカルボニル基、n-ヘキシルオキシカルボニル基等が挙げられる。
前記式(7)のR1~R4としての炭素数6~10のアリール基には、フェニル基、トリル基(o-、m-、p-)、ナフチル基(1-,2-)、フェナントリル基、アントラニル基等が挙げられる。
重合体(3A)における前記式(7)で表される構成単位の含有割合は、重合体(3A)を構成する全構成単位の合計100モル%に対して、1~30モル%が好ましく、3~25モル%がより好ましく、5~20モル%が更に好ましい。
但し、前記式(7)のR1~R4と前記式(8)のR5~R8とは互い同じであってもよく、異なっていてもよい。
前記式(9)のR9としての炭素数1~4のアルキレン基としては、メチレン基、エチレン基、プロピレン基、イソプロピレン基等が挙げられる。
尚、これらの単量体に異性体が存在する場合には、いずれの異性体を用いてもよく、また、1種のみの異性体を用いてもよく、2種以上の異性体の混合物を用いてもよい。
この重合体(3A)の調製方法は特に限定されないが、通常、前記式(7)と前記式(10)とを含む共重合体を調製した後、得られた共重合体に含まれる前記式(7)の構成単位に対して、前記式(9)で表される基を[HO-R9-R10]で表される化合物を用いて導入することにより得ることができる。
その他、後述する密着助剤(1D)、界面活性剤(1E)、溶剤(1F)等のうちの少なくとも1種を含有できることも、前記組成物(1)と同様である。
密着助剤(1D)を用いる場合、その配合量は、前記組成物(1)のアルカリ可溶性樹脂(1A)、前記組成物(2)の重合体(2A)又は前記組成物(3)の重合体(3A)100質量部に対して、0.2~10質量部が好ましく、0.5~8質量部がより好ましい。
界面活性剤(1E)を用いる場合、その配合量は、前記組成物(1)のアルカリ可溶性樹脂(1A)、前記組成物(2)の重合体(2A)又は前記組成物(3)の重合体(3A)100質量部に対して、15質量部以下が好ましく、0.001~10質量部がより好ましい。
溶剤(1F)を用いる場合、その配合量は、前記組成物(1)のアルカリ可溶性樹脂(1A)、前記組成物(2)の重合体(2A)又は前記組成物(3)の重合体(3A)100質量部に対して、100~3000質量部が好ましく、200~2000質量部がより好ましい。
第1樹脂層形成用組成物を基板に塗布する方法は特に限定されないが、例えば、回転塗布、流延塗布、ロール塗布等の適宜の手段が挙げられる。更に、必要に応じて、プレベーク(PB)することによって塗膜中の溶剤を揮発させてもよい。このプレベークの加熱条件は、第1樹脂層形成用組成物の配合組成によって適宜選択されるが、加熱温度は、通常、100~400℃程度、好ましくは150~250℃である。更に、加熱時間は、通常、10~300秒間、好ましくは30~90秒間である。
前記第2樹脂層は、有機高分子を主成分とする樹脂層である。この有機高分子を主成分とするとは、第2樹脂層全体を100質量%とした場合に、有機高分子が95質量%以上(100質量%であってもよい)含有されることを意味する。即ち、換言すれば、後述する無機高分子は含まれないか、又は、含まれたとしても5質量%未満であることを意味する。
感放射線性重合開始剤の配合量は特に限定されないが、第2樹脂膜形成用組成物全体に対して、0.01~30質量%が好ましく、0.1~20質量%がより好ましく、1~15質量%が更に好ましい。
第2樹脂層形成用組成物を第1樹脂層上に塗布する方法は特に限定されないが、例えば、回転塗布、流延塗布、ロール塗布等の適宜の手段が挙げられる。更に、必要に応じて、プレベーク(PB)することによって塗膜中の溶剤を揮発させてもよい。このプレベークの加熱条件は、第2樹脂層形成用組成物の配合組成によって適宜選択されるが、加熱温度は、通常、30~150℃程度、好ましくは50~130℃である。更に、加熱時間は、通常、10~300秒間、好ましくは30~90秒間である。
このスタンパ10は、放射線に対して透過性を有していてもよく、有さなくてもよい。スタンパ10が透光性を有し、且つ、第2樹脂層32に感放射線性重合開始剤が含まれる場合には、スタンパ10を第2樹脂層32に圧接した状態で露光する〔図4におけるPR(3-2’)の露光工程を備えることができる〕ことで、スタンパ10の凸部11を第2樹脂層32に対してより転写し易くすることができる。この場合、放射線に対する透過率は特に限定されないが、所望の放射線(前記感放射線性重合開始剤が官能し得る放射線)に対して、70%以上の透過率であることが好ましく、75~100%がより好ましく、80~100%が更に好ましい。
露光に用いる放射線種は特に限定されず、可視光線、紫外線、遠紫外線、X線、電子線等の荷電粒子線等の放射線{ArFエキシマレーザー(波長193nm)或いはKrFエキシマレーザー(波長248nm)などを含む}を用いることができる。
この離型層としてはハロゲン化有機基(ハロゲン化アルキル基等)を有するシラン系化合物を用いることが好ましい。このような場合には、ハロゲン化有機基が表面に位置するように自己組織化された有機単分子膜からなる離型層が得られる。このシラン系化合物としては、3,3,3-トリフルオロプロピル基、トリデカフルオロ-1,1,2,2-テトラヒドロオクチル基、ヘプタデカフルオロ-1,1,2,2-テトラヒドロデシル基、3,3,4,4,5,5,6,6,6-ノナフルオロヘキシル基などの各種ハロゲン化有機基を備える、トリクロロシラン、トリアルコキシシラン(トリメトキシシラン及びトリエトキシシラン等)が挙げられる他、パーフルオロデシルトリクロロシラン、オクタデシルトリクロロシラン、ジメチルジクロロシラン等が挙げられる。これらは1種のみを用いてもよく2種以上を併用してもよい。
この充填部は、無機高分子を主成分とすることで、有機高分子を主成分とする前記第1樹脂層及び前記第2樹脂層に対して、エッチング選択性を有することとなる部分である。
この充填部を構成する無機高分子は、骨格が無機元素で形成される高分子である。このような無機元素としては、Si、Ti、Al、Zr等が挙げられる。これらのなかではSiが好ましく、更には、前記無機高分子はポリシロキサンであることがより好ましい。また特に下記式(12)で表される構成単位及び下記式(13)で表される構成単位を含有するポリシロキサンと溶剤とを含む充填部形成用組成物を用いて形成された充填部であることが好ましい。
Si(OR1)4 (15)
〔式(15)において、R1は1価の有機基を表す。〕
前記1価のアルキル基としては、メチル基、エチル基、n-プロピル基、iso-プロピル基、n-ブチル基、sec-ブチル基、tert-ブチル基等が挙げられる。更に、置換された1価のアルキル基としては、γ-アミノプロピル基、γ-グリシドキシプロピル基、γ-トリフロロプロピル基が挙げられる。また、1価の芳香族基としては、フェニル基及びベンジル基等が挙げられる。
R1Si(OR2)3 (19)
〔式(19)において、R1は直鎖状若しくは分岐状の炭素数1~4のアルキル基を表し、R2は1価の有機基を表す。〕
前記更に他の構成単位を与える化合物としては、ジメチルジメトキシシラン、ジエチルジメトキシシラン、ジプロピルジメトキシシラン、ジフェニルジメトキシシラン、(3-アクリロキシプロピル)メチルジメトキシシラン、ジ-tert-ブチルジクロロシラン、ジエトキシジビニルシラン、ジ(3-メタクリロキシプロピル)ジメトキシシラン、ジメチルジエトキシシラン、ジメシチルジメトキシシラン、ジメシチルジクロロシシラン、ジイソプロピルジメトキシシラン、ジイソブチルジメトキシシラン、ジメチルジアセトキシシラン、ジエチルジエトキシシラン、ジシクロペンチルジメトキシシラン、ジ-n-ブチルジクロロシラン、ジ-t-ブチルジクロロシラン、ジ-シクロへキシルジクロロシラン、アセトキシプロピルジクロロシラン、(3-アクリロキシプロピル)メチルジクロロシラン、アリルへキシルジクロロシラン、アリルメチルジクロロシラン、アリルフェニルジメトキシシラン、アミノプロピルメチルジエトキシシラン、ジフェニルジエトキシシラン、ジフェニルジクロロシラン、ジメタクリロキシジメトキシシラン、t-ブチルメチルジクロロシラン、t-ブチルフェニルジクロロシラン、2-(カルボメトキシ)エチルメチルジクロロシラン、2-シアノエチルメチルジクロロシラン、3-シアノプロピルメチルジクロロシラン、3-シアノプロピルメチルジメトキシシラン、3-シアノプロピルフェニルジクロロシラン、シクロへキシルエチルジメトキシシラン、シクロへキシルメチルジメトキシシラン、シクロへキシルメチルジクロロシラン、メルカプトメチルメチルジエトキシシラン、3-メルカプトプロピルメチルジメトキシシラン、イソブチルメチルジメトキシシラン、フェニルメチルジクロロシラン、エチルメチルジクロロシラン、3-メタクリロキシプロピルメチルジエトキシシラン、p-トリルメチルジクロロシラン、フェネチルメチルジクロロシラン、ジ(p-トリル)ジクロロシラン、ジ(3-グリシドキシ)プロピルジメトキシシラン、ジ(3-グリシドキシ)プロピルジエトキシシラン、(3-シクロヘキセニル)プロピルジメトキシシラン等が挙げられる。
また、前記充填部形成用組成物を構成するポリシロキサンにおけるシラノール存在比は、無機高分子中のSi-O-Si結合に対して、1~2倍であることが好ましく、より好ましくは1~1.7倍、更に好ましくは1~1.5倍である。シラノール存在比が、1~2倍である場合には特に保存安定性が良好となる。尚、シラノール存在比は、Si29-NMRにより測定される。
更に、前記各種充填部形成用組成物を構成するポリシロキサンは、充填部形成用組成物に1種のみ含有されていてもよいし、2種以上含有されていてもよい。
溶剤の配合量は特に限定されないが、ポリシロキサン100質量部に対して、20~10000質量部が好ましく、30~5000質量部がより好ましい。
前記エーテルとしては、ジエチルエーテル、ジプロピルエーテル、ジブチルエーテル、ジペンチルエーテル、ジイソペンチルエーテル等が挙げられる。
前記エステルとしては、乳酸メチル、乳酸エチル、プロピレングリコールモノメチルエーテルアセテート等が挙げられる。
尚、前記充填部形成用組成物には、前記ポリシロキサン及びこの溶剤以外に、界面活性剤、架橋剤等の他の添加剤を含有させることができる。
ドライエッチングを行う際のソースガスは特に限定されないが、O2、CO、CO2等の酸素原子を含むガス、He、N2、Ar等の不活性ガス、Cl2、BCl2等の塩素原子を含むガス、H2、NH2のガスなどを用いることができる。これらのガスは1種のみを用いてもよく2種以上を併用してもよい。
尚、エッチング速度は以下の方法により測定される値であるものとする。即ち、任意の膜厚(処理前膜厚)にて第1樹脂膜と第2樹脂膜を形成させ、任意の条件でエッチング処理をした後の膜厚(処理後膜厚)との差からエッチング速度を算出することで測定を行う。
これらの他の各工程は1種のみを用いてもよく2種以上を併用してもよい。
下記フェノール性水酸基を有するアルカリ可溶性樹脂(1A)100質量部、熱酸発生剤(1B)1.0質量部、架橋剤(1C)25質量部、密着助剤(1D)2.5質量部、及び界面活性剤(1E)0.2質量部を、溶剤(1F)400質量部に溶解することにより第1樹脂層形成用組成物を調製した。
フェノール性水酸基を有するアルカリ可溶性樹脂(1A);p-ヒドロキシスチレン/スチレン/ビニル安息香酸=18/80/2(モル比)からなる共重合体、ポリスチレン換算重量平均分子量(Mw)=10,000、
熱酸発生剤(1B);2-(p-メトキシスチリル)-4,6-ビス(トリクロロメチル)-1,3,5-トリアジン、
架橋剤(1C);ヘキサメトキシメチルメラミン(株式会社三和ケミカル製、商品名「ニカラックMW-390」)、
密着助剤(1D);γ-グリシドキシプロピルトリメトキシシラン(チッソ株式会社製、商品名「S510」)、
界面活性剤(1E);レベリング剤・界面活性剤(ネオス株式会社製、商品名「FTX-218」)、
溶剤(1F);乳酸エチル/2-ヘプタノン=80/65(質量部)
ブチルメタクリレート100質量部、1,6-ヘキサンジオールジメタクリレート50質量部、2,4,6-トリメチルベンゾイル-フェニル-フォスフィンオキサイド25質量部を混合し、均一に攪拌することにより第2樹脂膜形成用組成物を得た。
無水マレイン酸0.54gを水10.8gに加熱溶解させてマレイン酸水溶液を調製した。次に、テトラエトキシシラン18.71g及びプロピレングリコールモノプロピルエーテル53.5gをフラスコに入れた。このフラスコに、冷却管と先に調製しておいたマレイン酸水溶液を入れた滴下ロートとをセットし、オイルバスにて100℃で加熱した後、マレイン酸水溶液をゆっくり滴下し、100℃で4時間反応させた。反応終了後、反応溶液の入ったフラスコを放冷してからエバポレータにセットし、反応中生成したエタノールを除去して反応生成物(重量平均分子量2100のポリシロキサンである)を得た。
得られた反応生成物中の固形分は、焼成法により測定した結果、15.7%であった。また、得られた生成物(固形分)の重量平均分子量は2100であった。
上記のようにして得られた反応生成物14.89gをプロピレングリコールモノエチルエーテル30.79gに溶解させ、さらにこの溶液を孔径が0.2μmのフィルターでろ過して充填部形成用組成物を得た。
尚、前記生成物(固形分)の重量平均分子量は、サイズ排除クロマトグラフィー(SEC)法により測定した。測定試料は、濃度10mmol/LのLiBr-H3PO4の2-メトキシエタノール溶液を溶媒として使用し、生成物0.1gを100ccの10mmol/L LiBr-H3PO4の2-メトキシエタノール溶液に溶解させたものを用いた。また、標準試料:ポリスチレン(WAKO社製)、装置:高速GPC装置「HLC-8120GPC」(型式名)、東ソー社製、カラム:長さ15cmの水系・極性有機溶媒系GPCカラム「TSK-GEL SUPER AWM-H」(東ソー社製)を直列に3本連結して使用、測定温度:40℃、流速:0.6ml/min.、検出器:RI(前記高速GPC装置に内蔵)の各条件とした。
(1)第1樹脂層形成工程
6インチのシリコンウエハ(基板)上に、先に調製された第1樹脂層形成用組成物をスピンコートし、ホットプレートを用いて180℃で1分間、300℃で1分間加熱し、300nm厚の第1樹脂層を形成した。
上記(1)までに得られた第1樹脂層に、先に調製された第2樹脂層形成用組成物10μL滴下してスピンコート法にて第2樹脂層を形成した。
上記(2)までに得られた第2樹脂層に、70nmライン(凸部幅)/140nmスペース(アスペクト比:1)の凹凸パターンを有する(即ち、70nmラインの凸部を有する)石英製のスタンパを0.4MPaの圧力で120秒間圧接した後、高圧水銀灯により照度2.5mW/cmの光を30秒間照射した後、スタンパを脱離させて、第2樹脂層の表面に凹部を形成した。
得られた凹部の断面を走査型電子顕微鏡(日立計測器サービス株式会社製、型式「S9380」)で観測したところ、幅70nm×深さ70nmの略正方形の断面形状を有する凹部が140nm間隔に並んで配置された凹凸パターンが形成されていた。残存膜厚(凹部の底面から第2樹脂層の底面までの距離)は100nmであった。
前記(3)までに得られた凹部を備えた第2樹脂層に、先に調製した充填部形成用組成物をスピンコートし、ホットプレートを用いて150℃で1分間加熱した。その後、フッ素条件下でエッチバックすることにより、充填部形成用組成物で形成された余剰部分(凹部からはみ出た部分)を除去して、第2樹脂層の凹部内に充填部を形成した。
得られた充填部の断面を走査型電子顕微鏡(日立計測器サービス株式会社製、型式「S9380」)で観測したところ、前記凹部に欠損なく、幅70nm×高さ70nmの略正方形の断面形状を有する充填部が140nm間隔で充填されていた。
前記(4)までに得られた充填部をマスクとして酸素条件下でリアクティブイオンエッチング(RIE)により、第2樹脂層及び第1樹脂層をエッチングしてパターンを形成した。得られたパターンの断面を走査型電子顕微鏡(日立計測器サービス株式会社製、型式「S9380」)で観察したところ、幅70nm×深さ70nmの凹部が140nm間隔で並んで配置された凹凸パターンを得ることができた。
前記実施例1において、第1樹脂層形成工程(1)を行わず、基板に直接第2樹脂層を形成した(即ち、基板に直接接するように第2樹脂層を形成)以外は、実施例1と同様に、凹部形成工程(残存膜厚も同様に100nmであった)、及び、充填部形成工程を行った。次いで、
これまでに得られた充填部をマスクとして酸素条件下でリアクティブイオンエッチング(RIE)により、第2樹脂層をエッチングしてパターンを形成した。得られたパターンの断面を走査型電子顕微鏡(日立計測器サービス株式会社製、型式「S9380」)で観察したところ、パターンの倒壊が認められた。
Claims (3)
- 基板上に、有機高分子を主成分とする第1樹脂層を形成する第1樹脂層形成工程(1)と、
前記第1樹脂層の表面に、有機高分子を主成分とする第2樹脂層を形成する第2樹脂層形成工程(2)と、
前記第2樹脂層に凸部を有するスタンパを圧接、脱離して、前記第2樹脂層に凹部を形成する凹部形成工程(3)と、
前記凹部内に無機高分子を主成分とする充填部を形成する充填部形成工程(4)と、
前記充填部をマスクとして、前記第1樹脂層及び前記第2樹脂層をエッチングするエッチング工程(5)と、を備えることを特徴とするパターン形成方法。 - 前記無機高分子は、ポリシロキサンである請求項1に記載のパターン形成方法。
- 前記第1樹脂層は、前記第2樹脂層よりエッチング速度が遅い材料からなる請求項1又は2に記載のパターン形成方法。
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| JP2011527656A JPWO2011021573A1 (ja) | 2009-08-17 | 2010-08-12 | パターン形成方法 |
| KR1020127004084A KR101680407B1 (ko) | 2009-08-17 | 2010-08-12 | 패턴 형성 방법 |
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| WO2013154075A1 (ja) * | 2012-04-09 | 2013-10-17 | 旭硝子株式会社 | 微細パターンを表面に有する物品の製造方法 |
| WO2013191118A1 (ja) * | 2012-06-18 | 2013-12-27 | 富士フイルム株式会社 | インプリント用硬化性組成物と基板の密着用組成物およびこれを用いた半導体デバイス |
| WO2014157226A1 (ja) * | 2013-03-26 | 2014-10-02 | 富士フイルム株式会社 | インプリント用下層膜形成組成物およびパターン形成方法 |
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| WO2015103232A1 (en) * | 2013-12-30 | 2015-07-09 | Canon Nanotechnologies, Inc. | Methods for uniform imprint pattern transfer of sub-20 nm features |
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| WO2012049593A1 (en) * | 2010-10-12 | 2012-04-19 | Koninklijke Philips Electronics N.V. | Method for manufacturing an organic electronic device |
| KR101901330B1 (ko) * | 2012-09-19 | 2018-09-27 | 삼성디스플레이 주식회사 | 유기전계발광 표시장치의 제조 방법 |
| KR20160017222A (ko) | 2014-08-01 | 2016-02-16 | 박두우 | 짜장소스 제조방법과 이를 통해 제조된 짜장소스 및 이를 이용한 짜장면 |
| JP2018187879A (ja) * | 2017-05-10 | 2018-11-29 | 株式会社金陽社 | オフセット印刷用ブランケットゴム層の製造方法、及びオフセット印刷用ゴムブランケットの製造方法 |
| JP7384153B2 (ja) * | 2018-04-09 | 2023-11-21 | 大日本印刷株式会社 | ナノインプリント用テンプレート及びその製造方法、並びに、2段メサブランクス及びその製造方法 |
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| WO2013154075A1 (ja) * | 2012-04-09 | 2013-10-17 | 旭硝子株式会社 | 微細パターンを表面に有する物品の製造方法 |
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| JP2015065443A (ja) | 2015-04-09 |
| JPWO2011021573A1 (ja) | 2013-01-24 |
| TWI460066B (zh) | 2014-11-11 |
| JP6020532B2 (ja) | 2016-11-02 |
| KR20120039719A (ko) | 2012-04-25 |
| TW201125717A (en) | 2011-08-01 |
| KR101680407B1 (ko) | 2016-11-28 |
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