WO2019230639A1 - 化合物、樹脂、組成物、レジストパターン形成方法、回路パターン形成方法及び樹脂の精製方法 - Google Patents
化合物、樹脂、組成物、レジストパターン形成方法、回路パターン形成方法及び樹脂の精製方法 Download PDFInfo
- Publication number
- WO2019230639A1 WO2019230639A1 PCT/JP2019/020864 JP2019020864W WO2019230639A1 WO 2019230639 A1 WO2019230639 A1 WO 2019230639A1 JP 2019020864 W JP2019020864 W JP 2019020864W WO 2019230639 A1 WO2019230639 A1 WO 2019230639A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- compound
- formula
- carbon atoms
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/15—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with all hydroxy groups on non-condensed rings, e.g. phenylphenol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/24—Halogenated derivatives
- C07C39/367—Halogenated derivatives polycyclic non-condensed, containing only six-membered aromatic rings as cyclic parts, e.g. halogenated poly-hydroxyphenylalkanes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
- C07C49/82—Ketones containing a keto group bound to a six-membered aromatic ring containing hydroxy groups
- C07C49/83—Ketones containing a keto group bound to a six-membered aromatic ring containing hydroxy groups polycyclic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C09D161/12—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with polyhydric phenols
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/022—Quinonediazides
- G03F7/0226—Quinonediazides characterised by the non-macromolecular additives
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/091—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers characterised by antireflection means or light filtering or absorbing means, e.g. anti-halation, contrast enhancement
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/094—Multilayer resist systems, e.g. planarising layers
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
-
- 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
- G03F7/20—Exposure; Apparatus therefor
-
- 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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
-
- 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
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
-
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31144—Etching the insulating layers by chemical or physical means using masks
Definitions
- the present invention relates to a compound, a resin, a composition, a resist pattern forming method, a circuit pattern forming method, and a resin purification method.
- the molecular weight is as large as about 10,000 to 100,000, and the molecular weight distribution is wide, resulting in roughness on the pattern surface, making it difficult to control the pattern size, and limiting the miniaturization.
- various low molecular weight resist materials have been proposed so far in order to provide resist patterns with higher resolution. Since the low molecular weight resist material has a small molecular size, it is expected to provide a resist pattern with high resolution and low roughness.
- an alkali development type negative radiation sensitive composition for example, see Patent Document 1 and Patent Document 2 using a low molecular weight polynuclear polyphenol compound as a main component
- a low molecular weight resist material having high heat resistance As candidates, an alkali development negative radiation-sensitive composition using a low molecular weight cyclic polyphenol compound as a main component (see, for example, Patent Document 3 and Non-Patent Document 1) has also been proposed.
- Non-Patent Document 2 a polyphenol compound as a base compound for a resist material can impart high heat resistance despite its low molecular weight, and is useful for improving the resolution and roughness of a resist pattern (for example, Non-Patent Document 2). reference).
- the present inventors have excellent etching resistance and a resist composition containing a compound having a specific structure and an organic solvent as a material soluble in a solvent and applicable to a wet process (see Patent Document 4). Has proposed.
- a terminal layer is removed by applying a predetermined energy as a resist underlayer film for lithography having a dry etching rate selection ratio close to that of a resist.
- a material for forming a lower layer film for a multilayer resist process has been proposed which contains at least a resin component having a substituent that generates a sulfonic acid residue and a solvent (see Patent Document 5).
- a resist underlayer film material containing a polymer having a specific repeating unit has been proposed as a material for realizing a resist underlayer film for lithography having a lower dry etching rate selection ratio than a resist (see Patent Document 6). ). Furthermore, in order to realize a resist underlayer film for lithography having a low dry etching rate selection ratio compared with a semiconductor substrate, a repeating unit of acenaphthylenes and a repeating unit having a substituted or unsubstituted hydroxy group are copolymerized. A resist underlayer film material containing a polymer is proposed (see Patent Document 7).
- an amorphous carbon underlayer film formed by chemical vapor deposition (CVD) using methane gas, ethane gas, acetylene gas or the like as a raw material is well known.
- CVD chemical vapor deposition
- methane gas, ethane gas, acetylene gas or the like is well known.
- a resist underlayer film material capable of forming a resist underlayer film by a wet process such as spin coating or screen printing is required.
- the present inventors have a composition for forming an underlayer film for lithography containing a compound having a specific structure and an organic solvent as a material having excellent etching resistance, high heat resistance, soluble in a solvent and applicable to a wet process.
- the thing (refer patent document 8) is proposed.
- the formation method of the intermediate layer used in the formation of the resist underlayer film in the three-layer process for example, a silicon nitride film formation method (see Patent Document 9) or a silicon nitride film CVD formation method (see Patent Document 10).
- a silicon nitride film formation method for example, a silicon nitride film formation method (see Patent Document 9) or a silicon nitride film CVD formation method (see Patent Document 10).
- an intermediate layer material for a three-layer process a material containing a silsesquioxane-based silicon compound is known (see Patent Documents 11 and 12).
- Patent Document 13 discloses an optical lens sheet containing an ionic liquid, a compound having a predetermined polyalkylene oxide structure and a (meth) acryloyl group, a predetermined (meth) acrylate monomer, and a photopolymerization initiator.
- An energy beam curable resin composition is disclosed.
- Patent Document 14 describes that a resin composition containing a copolymer having a specific structural unit, a specific curing accelerating catalyst, and a solvent is suitably used for a microlens or a flattened film. Has been.
- the present invention provides a novel compound particularly useful as a film forming material for lithography or a material for forming an optical component, and a resin, a composition, a resist pattern forming method, an insulating film forming method having a structural unit derived from this novel compound, It aims at providing the circuit pattern formation method and the purification method of the said compound or resin.
- the present inventors have found that a novel compound having a specific structure can be obtained, and the obtained novel compound is used for forming a film forming material for lithography or optical component formation. As a result, the present invention has been found to be particularly useful as a material for use.
- a compound represented by the following formula (1) is a group having 1 to 12 carbon atoms, R 1 is a 2n-valent group having 1 to 30 carbon atoms, R 2 to R 5 are each independently a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, An alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a thiol group, or a hydroxyl group, At least one of R 4 and / or at least one of R 5 is a hydroxyl group and / or a thiol group, m 2 and m 3 are each independently an integer of 0 to 8, m 4 and m 5 are each independently an integer of 0 to 9, n is an integer of 1 to 4, p 2 to p 5 are each
- A is a group consisting of carbonyl group, thiocarbonyl group, methylene group, ethylene group, propylene group, butylene group, hexafluoropropylene group, phenylethylene group, diphenylmethylene group, cyclohexylene group, trimethylcyclohexylene group, and cyclododecylene group.
- the compound of [1] selected from [1-2] The compound of [1] or [1-1], wherein R 1 is a 2n-valent hydrocarbon group having 1 to 30 carbon atoms.
- R 1 is a 2n-valent hydrocarbon group having 1 to 30 carbon atoms.
- the compound according to [1-2], wherein the 2n-valent hydrocarbon group having 1 to 30 carbon atoms includes an aromatic group.
- R 1a is a hydrogen atom or a monovalent group having 1 to 10 carbon atoms
- R 1b is an n-valent group having 1 to 25 carbon atoms
- m 2 and m 3 are each independently an integer of 0 to 4
- m 4 and m 5 are each independently an integer of 0 to 5.
- [3-1] The compound of [3], wherein R 1b is an n-valent hydrocarbon group having 1 to 25 carbon atoms.
- [3-2] The compound according to [3-1], wherein the n-valent hydrocarbon group having 1 to 25 carbon atoms includes an aromatic group.
- [4] The compound of any one of [3] to [3-2], wherein the compound represented by the formula (1a) is a compound represented by the following formula (1b).
- A, R 4 , R 5 , R 1a , R 1b , m 4 , m 5 and n are as defined in the formula (1a)
- R 6 and R 7 are each independently a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, 2 to 10 alkynyl groups, thiol groups or hydroxyl groups
- m 6 and m 7 are each independently an integer of 0 to 3
- R 10 and R 11 are hydrogen atoms.
- [6] A resin having a structural unit derived from the compound of any one of [1] to [5].
- Resin of [6] which has a structure represented by following formula (2).
- A, R 1 to R 5 , m 2 to m 5 , n, and p 2 to p 5 are each as defined in the formula (1), L is a single bond or a linking group.
- [8] A composition comprising at least one selected from the group consisting of the compounds of any one of [1] to [5] and the resin of [6] or [7].
- the composition according to [8] further comprising a solvent.
- a photoresist layer forming step of forming a photoresist layer on the substrate using the composition of [12] A resist pattern forming method, comprising: a developing step of irradiating a predetermined region of the photoresist layer formed by the photoresist layer forming step with radiation and developing.
- a method for purifying a compound according to any one of [1] to [5] or a resin according to [6] or [7], A method for purifying a compound or resin, comprising an extraction step in which a solution containing an organic solvent that is not arbitrarily miscible with water is contacted with an acidic aqueous solution.
- a novel compound particularly useful as a film forming material for lithography or a material for forming an optical component, and a resin, a composition, a resist pattern forming method, an insulating film forming method having a structural unit derived from this novel compound It is possible to provide a circuit pattern forming method and a method for purifying the above compound or resin.
- this embodiment is an illustration for demonstrating this invention, and this invention is not limited only to the embodiment.
- the compound of this embodiment is a compound represented by following formula (1).
- the compound of this embodiment has, for example, the following characteristics (1) to (4).
- (1) The compound of this embodiment has the outstanding solubility with respect to the organic solvent (especially safety solvent). Therefore, for example, when the compound of this embodiment is used as a film forming material for lithography, a film for lithography can be formed by a wet process such as spin coating or screen printing.
- (2) The compound of this embodiment has a relatively high carbon concentration and a relatively low oxygen concentration.
- the compound of this embodiment has a phenolic hydroxyl group and / or a phenolic thiol group in the molecule, it is useful for forming a cured product by reaction with a curing agent.
- cured material can be formed when a phenolic thiol group carries out a crosslinking reaction. Due to these reasons, the compound of the present embodiment can exhibit high heat resistance.
- the compound of the present embodiment is used as a film forming material for lithography, deterioration of the film during high-temperature baking is suppressed, and oxygen plasma etching or the like is performed.
- the film for lithography excellent in the etching resistance with respect to can be formed.
- the compound of this embodiment can express high heat resistance and etching resistance as described above, and is excellent in adhesion to a resist layer or a resist intermediate layer film material.
- resist pattern formability refers to a property in which no large defect is seen in the resist pattern shape and both resolution and sensitivity are excellent.
- A is a group having 1 to 12 carbon atoms (for example, a hydrocarbon group)
- R 1 is a 2n-valent group having 1 to 30 carbon atoms
- R 2 to R 5 are Each independently a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms,
- m 2 and m 3 are each independently an integer of 0-8.
- M 4 and m 5 are each independently an integer of 0 to 9
- n is an integer of 1 to 4
- p 2 to p 5 are each independently an integer of 0 to 2.
- A is a group having 1 to 12 carbon atoms and can form a divalent group.
- A may contain a hetero atom. Examples include carbonyl group, thiocarbonyl group, methylene group, ethylene group, propylene group, butylene group, hexafluoropropylene group, phenylethylene group, diphenylmethylene group, cyclohexylene group, trimethylcyclohexylene group, and cyclododecylene group. Not.
- A preferably has an alicyclic structure, and more preferably has a cyclohexylene group, a trimethylcyclohexylene group, or a cyclododecylene group.
- A is preferably halogen from the viewpoint of solubility, and more preferably a hexafluoropropylene group.
- A is preferably a hydrocarbon group having 1 to 3 carbon atoms from the viewpoint of heat resistance, and more preferably has a carbonyl group, a methylene group, an ethylene group, or a propylene group.
- R 1 is a 2n-valent group having 1 to 30 carbon atoms, and each aromatic ring is bonded through this R 1 . Specific examples of the 2n-valent group will be described later.
- R 2 to R 5 are each independently a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or 6 to 10 carbon atoms. And a monovalent group selected from the group consisting of an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a thiol group, and a hydroxyl group.
- alkyl group examples include straight groups such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, iso-butyl group, sec-butyl group, tert-butyl group, pentyl group, and hexyl group.
- alkyl group examples include straight groups such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, iso-butyl group, sec-butyl group, tert-butyl group, pentyl group, and hexyl group.
- examples thereof include a cyclic alkyl group such as a chain or branched alkyl group, a cyclopentyl group, and a cyclohexyl group.
- alkoxy group examples include a methoxy group, an ethoxy group, and a propoxy group.
- Examples of the aryl group include a phenyl group, a naphthyl group, a tolyl group, and a xylyl group.
- Examples of the alkenyl group include ethenyl group, propenyl group, butenyl group, pentenyl group, hexenyl group and the like.
- Examples of the alkynyl group include ethynyl group, 1-propynyl group, and 2-propynyl group.
- at least one of R 4 and / or at least one of R 5 is a hydroxyl group and / or a thiol group.
- m 2 and m 3 are each independently an integer of 0 to 8, preferably an integer of 0 to 4, and more preferably 1 or 2.
- m 4 and m 5 are each independently an integer of 0 to 9, preferably an integer of 0 to 4, and more preferably 1 or 2.
- n is an integer of 1 to 4, and preferably an integer of 1 to 2.
- p 2 to p 5 are each independently an integer of 0 to 2, preferably 0 or an integer of 1, and more preferably 0.
- n 4
- an octavalent hydrocarbon group having 3 to 30 carbon atoms for example, a linear or branched hydrocarbon group such as an alkaneoctyl group or a cyclic hydrocarbon group
- the cyclic hydrocarbon group may have a bridged cyclic hydrocarbon group and / or an aromatic group.
- the 2n-valent group R 1 (for example, a 2n-valent hydrocarbon group) may have a double bond or may have a hetero atom.
- the compound represented by the above formula (1) has a relatively low molecular weight, but has high heat resistance due to the rigidity of its structure, and therefore can be used under high temperature baking conditions. Further, it has tertiary carbon or quaternary carbon in the molecule, and crystallization is suppressed, so that it is suitably used as a film forming material for lithography.
- the compound represented by the above formula (1) has high solubility in an organic solvent (especially a safe solvent) and is excellent in heat resistance and etching resistance. For this reason, the film forming material for lithography containing the compound represented by the formula (1) has excellent resist pattern formability.
- organic solvent the organic solvent as described in [Solvent] illustrated by the term of the [composition] mentioned later is mentioned.
- the compound represented by the above formula (1) has a relatively low molecular weight and low viscosity, even if the substrate has a step (particularly, a fine space or a hole pattern), the step It is easy to improve the flatness of the film while uniformly filling every corner. As a result, the film forming material for lithography containing the compound represented by the above formula (1) is excellent in embedding characteristics and planarization characteristics. Moreover, since the compound represented by the said Formula (1) is a compound which has a comparatively high carbon concentration, high etching tolerance can also be expressed.
- the compound represented by the above formula (1) has a high aromatic ring density, the refractive index is high, and coloring is suppressed by a wide range of heat treatment from low temperature to high temperature. It is also useful.
- the compound represented by the above formula (1) is preferably a compound having a quaternary carbon from the viewpoint of suppressing oxidative decomposition of the compound to suppress coloring and improving heat resistance and solvent solubility.
- the optical component may be in the form of a film or sheet, for example, a plastic lens (for example, a prism lens, a lenticular lens, a micro lens, a Fresnel lens, a viewing angle control lens, a contrast enhancement lens, etc.) Phase difference film, electromagnetic shielding film, prism, optical fiber, solder resist for flexible printed wiring, plating resist, interlayer insulating film for multilayer printed wiring board, photosensitive optical waveguide, liquid crystal display, organic electroluminescence (EL) display, optical semiconductor ( LED) element, solid-state imaging element, organic thin film solar cell, dye-sensitized solar cell, and organic thin film transistor (TFT).
- a plastic lens for example, a prism lens, a lenticular lens, a micro lens, a Fresnel lens, a viewing angle control lens, a contrast enhancement lens, etc.
- Phase difference film for flexible printed wiring
- plating resist for multilayer printed wiring board
- photosensitive optical waveguide liquid crystal display
- the compound represented by the formula (1) is an embedded film and a planarizing film on a photodiode, which is a member of a solid-state imaging device for which a high refractive index is particularly required, a planarizing film before and after a color filter, a microlens, a microlens It is suitably used as a material for forming a planarizing film and a conformal film on a lens.
- the compound represented by the above formula (1) is a compound in which at least one of R 2 and / or at least one of R 3 is a hydroxyl group and / or a thiol group from the viewpoint of easy crosslinking reaction and solubility in an organic solvent. It is preferable that More preferably, at least one of R 2 , at least one of R 3 , at least one of R 4 , and at least one of R 5 are a hydroxyl group and / or a thiol group (preferably a hydroxyl group).
- the compound represented by the above formula (1) is preferably a compound represented by the following formula (1-1) from the viewpoint of easy crosslinking and solubility in an organic solvent.
- A, R 4 , R 5 , n, p 2 to p 5 , m 4 and m 5 and n are as defined in formula (1), and R 1a is , A hydrogen atom, or a monovalent group having 1 to 10 carbon atoms, R 1b is an n-valent group having 1 to 25 carbon atoms, and R 6 and R 7 each independently represent 1 From a group consisting of a linear, branched or cyclic alkyl group having 10 to 10, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a thiol group, and a hydroxyl group R is a selected monovalent group, R 10 and R 11 are hydrogen atoms, and m 6 and m 7 are each independently an integer of 0 to 7.
- Examples of the monovalent group R 1a having 1 to 10 carbon atoms include linear, branched, or cyclic alkyl groups, aryl groups, and the like. Specific examples include a methyl group, an ethyl group, and n-propyl. Group, i-propyl group, n-butyl group, i-butyl group, t-butyl group, n-pentyl group, neopentyl group, cyclopentyl group, n-hexyl group, cyclohexyl group, phenyl group and the like.
- the compound represented by the above formula (1-1) is preferably a compound represented by the following formula (1-2) from the viewpoint of easy crosslinking and solubility in an organic solvent.
- R 1a , R 1b , R 6 , R 7 , R 10 , R 11 , n, p 2 to p 5 , m 6 and m 7 are each represented by the formula (1-
- R 8 and R 9 are each independently a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, A monovalent group selected from the group consisting of an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a thiol group, and a hydroxyl group,
- R 12 and R 13 are hydrogen atoms
- Each 9 is independently an integer of 0 to 8.
- the compound represented by the above formula (1) is preferably a compound represented by the following formula (1a) from the viewpoint of raw material supply.
- R 1a is a hydrogen atom or a monovalent group having 1 to 10 carbon atoms.
- R 1b is an n-valent group having 1 to 25 carbon atoms, m 2 and m 3 are each independently an integer of 0 to 4, and m 4 and m 5 are each independently , An integer from 0 to 5.
- the monovalent group R 1a having 1 to 10 carbon atoms is as described in the above formula (1-1).
- the n-valent group R 1b having 1 to 25 carbon atoms is as described in the above formula (1-1).
- the compound represented by the above formula (1a) is more preferably a compound represented by the following formula (1b) from the viewpoint of solubility in an organic solvent.
- A, R 4 , R 5 , R 1a , R 1b , m 4 , m 5 and n are as defined in the above formula (1a), and R 6 and R 7 are Each independently a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, A thiol group or a hydroxyl group, m 6 and m 7 are each independently an integer of 0 to 3, and R 10 and R 11 are hydrogen atoms.
- the compound represented by the above formula (1b) is more preferably a compound represented by the following formula (1c) from the viewpoint of solubility in an organic solvent.
- R 1a , R 1b , R 6 , R 7 , R 10 , R 11 , m 6 , m 7 and n are as defined in the above formula (1b)
- R 8 and R 9 are each independently a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, 2 to 10 alkynyl groups, thiol groups or hydroxyl groups
- m 8 and m 9 are each independently an integer of 0 to 4
- R 12 and R 13 are hydrogen atoms.
- the compound represented by the above formula (1c) is represented by the following formulas (BisF-1) to (BisF-3), (BiF-1) to (BiF-7) from the viewpoint of further solubility in an organic solvent. It is particularly preferred that the compound be
- the compound represented by the formula (1) is preferably a compound selected from the group represented by the following formula from the viewpoint of heat resistance and solubility in an organic solvent.
- A is as defined in the above formula (1).
- A has the same meaning as A in the formula (1).
- A, R 2 to R 5 , and m 2 to m 5 are as defined in the formula (1).
- a and R 2 to R 5 are as defined in the above formula (1).
- m 2 ′ and m 3 ′ are each independently an integer of 0 to 4
- m 4 ′ and m 5 ′ are each independently an integer of 0 to 5.
- A, R 2 to R 5 and m 2 to m 5 are as defined in the above formula (1).
- a and R 2 to R 5 are as defined in the formula (1).
- m 2 ′ and m 3 ′ are each independently an integer of 0 to 4
- m 4 ′ and m 5 ′ are each independently an integer of 0 to 5.
- A is as defined in the above formula (1).
- Examples of the method for synthesizing the compound represented by the formula (1) include the following methods. That is, under normal pressure, a compound represented by the following formula (1-x), a compound represented by the following formula (1-y), a compound represented by the following formula (z1) or the following formula (z2) Is subjected to a polycondensation reaction in the presence of an acid catalyst or a base catalyst to obtain a compound represented by the above formula (1).
- the above reaction may be performed under pressure as necessary.
- A, R 2 , R 4 , m 2 , m 4 , p 2 and p 4 are as defined in formula (1).
- A, R 3 , R 5 , m 3 , m 5 , p 3 and p 5 are each as defined in formula (1).
- the compound represented by the above formula (1-x) and the compound represented by the above formula (1-y) may be the same.
- R 1 and n are as defined in the above formula (1).
- R 1a , R 1b and n are as defined in the above formula (1-1).
- a bis (hydroxyphenyl) compound and a corresponding aldehyde or ketone are subjected to a polycondensation reaction in the presence of an acid catalyst or a base catalyst to thereby form the above formula (1). Is obtained.
- the bis (hydroxyphenyl) compounds are not particularly limited. For example, bis (hydroxyphenyl) methane, bis (hydroxyphenyl) ethane, bis (hydroxyphenyl) propane, bis (hydroxyphenyl) butane, bis (hydroxyphenyl) Phenylmethane, bis (hydroxyphenyl) phenylethane, bis (hydroxyphenyl) difluoromethane, bis (hydroxyphenyl) hexafluoropropane, bis (hydroxyphenyl) diphenylmethane, bis (methylhydroxyphenyl) propane, bis (dimethylhydroxyphenyl) propane Bis (hydroxyphenyl) dichloroethylene, bis (hydroxyphenyl), bis (hydroxyphenyl) carbonyl, bis (hydroxyphenyl) trimethyl Hexane, bis (hydroxyphenyl) cyclohexane, bis (hydroxyphenyl) cyclododecane, bis (hydroxyphenyl) carbonyl, bis (dihydroxyphenyl) carbony
- bis (hydroxyphenyl) compounds are used singly or in combination of two or more.
- the aldehydes are not particularly limited, and for example, formaldehyde, trioxane, paraformaldehyde, benzaldehyde, acetaldehyde, propylaldehyde, phenylacetaldehyde, phenylpropylaldehyde, hydroxybenzaldehyde, chlorobenzaldehyde, nitrobenzaldehyde, methylbenzaldehyde, dimethylbenzaldehyde, trimethylbenzaldehyde.
- aldehydes are used individually by 1 type or in combination of 2 or more types.
- At least one selected from the group consisting of carbaldehyde, phenanthrenecarbaldehyde, pyrenecarbaldehyde, and furfural From the viewpoint of improving etching resistance, benzaldehyde, hydroxybenzaldehyde, chlorobenzaldehyde, nitrobenzaldehyde, methylbenzaldehyde, Ethylbenzal Hydrate, butyl benzaldehyde, cyclohexyl benzaldehyde, biphenyl aldehyde, naphthaldehyde, anthracene carbaldehyde, phenanthrene carbaldehyde, pyrene carbaldehyde, and it is more preferable to use at least one member selected from the group consisting of furfural.
- the ketones are not particularly limited, for example, acetone, methyl ethyl ketone, cyclobutanone, cyclopentanone, cyclohexanone, norbornanone, tricyclohexanone, tricyclodecanone, adamantanone, fluorenone, benzofluorenone, acenaphthenequinone, acenaphthenone, anthraquinone, Acetophenone, diacetylbenzene, triacetylbenzene, acetonaphthone, acetylmethylbenzene, acetyldimethylbenzene, acetyltrimethylbenzene, acetylethylbenzene, acetylpropylbenzene, acetylbutylbenzene, acetylpentabenzene, acetylbutylmethylbenzene, acetylhydroxybenzene
- ketones are used individually by 1 type or in combination of 2 or more types.
- acetophenone diacetylbenzene, triacetylbenzene, acetonaphthone, diphenylcarbonylnaphthalene, phenylcarbonylbiphenyl, diphenylcarbonylbiphenyl, benzophenone, diphenylcarbonylbenzene, triphenylcarbonylbenzene, benzonaphthone, diphenylcarbonylnaphthalene, phenylcarbonylbiphenyl And at least one selected from the group consisting of diphenylcarbonylbiphenyl is more preferable.
- aldehydes or ketones it is preferable to use an aldehyde having an aromatic ring or an aromatic ketone from the viewpoint of achieving both high heat resistance and high etching resistance.
- the acid catalyst used in the above reaction is not particularly limited, and examples thereof include inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, hydrobromic acid, hydrofluoric acid, oxalic acid, malonic acid, succinic acid, adipic acid, and sebacic acid.
- Citric acid fumaric acid, maleic acid, formic acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoroacetic acid, dichloroacetic acid, trichloroacetic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, naphthalenesulfonic acid, naphthalenedisulfonic acid, etc.
- Examples include organic acids, Lewis acids such as zinc chloride, aluminum chloride, iron chloride, and boron trifluoride, and solid acids such as silicotungstic acid, phosphotungstic acid, silicomolybdic acid, and phosphomolybdic acid.
- These acid catalysts are used singly or in combination of two or more.
- an organic acid and a solid acid are preferable from the viewpoint of production, and hydrochloric acid or sulfuric acid is preferably used from the viewpoint of production such as availability and ease of handling.
- the amount of the acid catalyst used can be appropriately set according to the raw material to be used, the type of catalyst to be used, and the reaction conditions, and is not particularly limited. It is preferable that
- the base catalyst used in the above reaction is not particularly limited, and examples thereof include metal alkoxide (sodium methoxide, sodium ethoxide, potassium methoxide, potassium ethoxide and other alkali metals or alkaline earth metal alkoxides), metal hydroxide, and the like.
- metal alkoxide sodium methoxide, sodium ethoxide, potassium methoxide, potassium ethoxide and other alkali metals or alkaline earth metal alkoxides
- metal hydroxide and the like.
- alkali metal or alkaline earth metal hydroxide such as sodium hydroxide and potassium hydroxide
- alkali metal or alkaline earth hydrogen carbonate such as sodium hydrogen carbonate and potassium hydrogen carbonate
- amines for example, third Tertiary amines (trialkylamines such as triethylamine, aromatic tertiary amines such as N, N-dimethylaniline, heterocyclic tertiary amines such as 1-methylimidazole), carboxylic acid metal salts (sodium acetate, Alkali metal acetates or alkaline earth metals such as calcium acetate
- base catalysts are used singly or in combination of two or more, among these, from the viewpoint of production, metal alkoxide, metal hydroxide, Amines are preferable, and sodium hydroxide is preferably used from the viewpoint of production such as availability and ease of handling, etc.
- the amount of the base catalyst used depends on the raw material used, the type of catalyst used, and the reaction conditions. Although it can be suitably set according to the above, it is not particularly limited, but it is preferably 0.01 to 100 parts by mass with respect to 100 parts by mass of the reaction raw material.
- reaction solvent may be used.
- the reaction solvent is not particularly limited, and examples thereof include water, methanol, ethanol, propanol, butanol, tetrahydrofuran, dioxane, ethylene glycol dimethyl ether, and ethylene glycol diethyl ether. These solvents are used singly or in combination of two or more.
- the amount of the solvent used can be appropriately set according to the raw material used, the type of catalyst used, and the reaction conditions, and is not particularly limited, but is in the range of 0 to 2000 parts by mass with respect to 100 parts by mass of the reactive raw material. It is preferable.
- the reaction temperature in the above reaction can be appropriately selected according to the reactivity of the reaction raw material, and is not particularly limited, but is usually in the range of 10 to 200 ° C.
- the reaction temperature is preferably higher, and specifically in the range of 60 to 200 ° C.
- the reaction method is not particularly limited. For example, there are a method in which raw materials (reactants) and a catalyst are charged at once, and a method in which raw materials (reactants) are successively dropped in the presence of a catalyst.
- the obtained compound can be isolated according to a conventional method, and is not particularly limited. For example, in order to remove unreacted raw materials, catalysts, etc. existing in the system, a general method is adopted such as raising the temperature of the reaction vessel to 130-230 ° C. and removing volatile matter at about 1-50 mmHg. Thus, the target compound can be obtained.
- Preferable reaction conditions include the compound represented by the above formula (1-x) and the above formula (1-y) with respect to 1 mole of the aldehyde or ketone represented by the above formula (z1) or (z2).
- Examples include conditions in which the compound represented is used in an amount of 1.0 mol to excess, and further 0.001 to 1 mol of an acid catalyst is used and the reaction is performed at normal pressure at 50 to 150 ° C. for about 20 minutes to 100 hours. .
- the target product can be isolated by a known method.
- the reaction solution is concentrated, pure water is added to precipitate the reaction product, cooled to room temperature, filtered and separated, and the resulting solid is filtered and dried, followed by column chromatography.
- the compound represented by the above formula (1), which is the target product can be obtained by separating and purifying from the by-product, distilling off the solvent, filtering and drying.
- the resin of this embodiment has a structural unit derived from the compound represented by the above formula (1). That is, the resin of this embodiment contains the compound represented by the above formula (1) as a monomer component. As a specific example of the resin of this embodiment, a resin having a structure represented by Formula (2) can be given.
- A, R 1 to R 5 , m 2 to m 5 , n, and p 2 to p 5 are each as defined in the formula (1), and L is a single bond Or a linking group.
- linking group examples include a residue derived from a compound having a crosslinking reactivity described later.
- the resin of the present embodiment can be obtained by reacting the compound represented by the above formula (1) with a compound having a crosslinking reactivity.
- the crosslinking-reactive compound may be any compound that can oligomerize or polymerize the compound represented by the above formula (1).
- aldehydes, ketones, carboxylic acids, carboxylic halides, halogen-containing compounds examples thereof include compounds, amino compounds, imino compounds, isocyanate compounds, and unsaturated hydrocarbon group-containing compounds.
- a novolak resin obtained by a condensation reaction between a compound represented by the above formula (1) and an aldehyde or ketone which is a compound having a crosslinking reaction is used.
- a novolak resin obtained by a condensation reaction between a compound represented by the above formula (1) and an aldehyde or ketone which is a compound having a crosslinking reaction is used.
- an aldehyde or ketone which is a compound having a crosslinking reaction is used.
- aldehydes used for novolak-izing the compound represented by the above formula (1) are not particularly limited, and for example, formaldehyde, trioxane, paraformaldehyde, benzaldehyde, acetaldehyde, propylaldehyde, phenylacetaldehyde, phenylpropylene.
- aldehyde examples include aldehyde, hydroxybenzaldehyde, chlorobenzaldehyde, nitrobenzaldehyde, methylbenzaldehyde, ethylbenzaldehyde, butylbenzaldehyde, biphenylaldehyde, naphthaldehyde, anthracenecarbaldehyde, phenanthrenecarbaldehyde, pyrenecarbaldehyde, and furfural.
- aldehydes are used individually by 1 type or in combination of 2 or more types.
- benzaldehyde phenylacetaldehyde, phenylpropylaldehyde, hydroxybenzaldehyde, chlorobenzaldehyde, nitrobenzaldehyde, methylbenzaldehyde, ethylbenzaldehyde, butylbenzaldehyde, cyclohexylbenzaldehyde, biphenylaldehyde, naphthaldehyde, anthracene, from the viewpoint that high heat resistance can be expressed.
- aldehyde it is preferable to use at least one selected from the group consisting of carbaldehyde, phenanthrenecarbaldehyde, pyrenecarbaldehyde, and furfural.
- benzaldehyde hydroxybenzaldehyde, chlorobenzaldehyde, nitrobenzaldehyde, methylbenzaldehyde, Ethylbenzal
- hydride butylbenzaldehyde, cyclohexylbenzaldehyde, biphenylaldehyde, naphthaldehyde, anthracenecarbaldehyde, phenanthrenecarbaldehyde, pyrenecarbaldehyde, and furfural, more preferably formaldehyde.
- the amount of aldehyde used is not particularly limited, but is preferably 0.2 to 5 mol, more preferably 0.5
- ketones used for novolak conversion of the compound represented by the above formula (1) are not particularly limited.
- Adamantanone fluorenone, benzofluorenone, acenaphthenequinone, acenaphthenone, anthraquinone, acetophenone, diacetylbenzene, triacetylbenzene, acetonaphthone, diphenylcarbonylnaphthalene, phenylcarbonylbiphenyl, diphenylcarbonylbiphenyl, benzophenone, diphenylcarbonylbenzene, triphenylcarbonylbenzene , Benzonaphthone, diphenylcarbonylnaphthalene,
- ketones are used individually by 1 type or in combination of 2 or more types.
- the amount of the ketone used is not particularly limited, but is preferably 0.2 to 5 mol, more preferably 0.5 to 2 mol, relative to 1 mol of the compound represented by the above formula (1).
- a catalyst can be used.
- the acid catalyst or base catalyst used here can be appropriately selected from known ones and is not particularly limited.
- Such an acid catalyst is not particularly limited, and examples thereof include inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, hydrobromic acid, hydrofluoric acid, oxalic acid, malonic acid, succinic acid, adipic acid, sebacic acid, Organics such as citric acid, fumaric acid, maleic acid, formic acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoroacetic acid, dichloroacetic acid, trichloroacetic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, naphthalenesulfonic acid, naphthalenedisulfonic acid
- acids Lewis acids such as zinc chloride, aluminum chloride,
- These catalysts are used individually by 1 type or in combination of 2 or more types.
- an organic acid and a solid acid are preferable from the viewpoint of production, and hydrochloric acid or sulfuric acid is preferable from the viewpoint of production such as availability and ease of handling.
- the amount of the acid catalyst used can be appropriately set according to the raw material to be used, the type of catalyst to be used, and further the reaction conditions, and is not particularly limited, but is 0.01 to 100 parts by mass with respect to 100 parts by mass of the reactive raw material. It is preferable that
- indene hydroxyindene, benzofuran, hydroxyanthracene, acenaphthylene, biphenyl, bisphenol, trisphenol, dicyclopentadiene, tetrahydroindene, 4-vinylcyclohexene, norbornadiene, 5-vinylnorborna-2-ene, ⁇ -pinene, ⁇ -pinene
- a copolymerization reaction with a compound having a nonconjugated double bond such as limonene, aldehydes or ketones are not necessarily required.
- reaction solvent in the condensation reaction between the compound represented by the above formula (1) and aldehydes or ketones, a reaction solvent can also be used.
- the reaction solvent in this polycondensation can be appropriately selected from known solvents and is not particularly limited. Examples thereof include water, methanol, ethanol, propanol, butanol, tetrahydrofuran, dioxane, and mixed solvents thereof. Illustrated.
- a solvent is used individually by 1 type or in combination of 2 or more types.
- the amount of the solvent used can be appropriately set according to the raw material used, the type of catalyst used, and the reaction conditions, and is not particularly limited, but is in the range of 0 to 2000 parts by mass with respect to 100 parts by mass of the reactive raw material. It is preferable.
- the reaction temperature can be appropriately selected according to the reactivity of the reaction raw material, and is not particularly limited, but is usually in the range of 10 to 200 ° C.
- the reaction method the compound represented by the above formula (1), the aldehydes and / or ketones, and the method of charging the catalyst all together, the compound represented by the above formula (1), the aldehydes and / or Alternatively, a method of sequentially dropping ketones in the presence of a catalyst can be mentioned.
- the obtained compound can be isolated according to a conventional method, and is not particularly limited.
- a general method is adopted such as raising the temperature of the reaction vessel to 130-230 ° C. and removing volatile matter at about 1-50 mmHg.
- a target product for example, a novolak resin
- the resin of this embodiment is also obtained during the synthesis reaction of the compound represented by the above formula (1). This corresponds to the case where the same aldehyde or ketone is used when the compound represented by the above formula (1) and the compound represented by the above formula (1) are polymerized.
- the resin of the present embodiment may be a homopolymer of the compound represented by the above formula (1), or may be a copolymer with other phenols.
- the phenols that can be copolymerized here are not particularly limited. For example, phenol, cresol, dimethylphenol, trimethylphenol, butylphenol, phenylphenol, diphenylphenol, naphthylphenol, resorcinol, methylresorcinol, catechol, butylcatechol, methoxy Phenol, methoxyphenol, propylphenol, pyrogallol, thymol, etc. are mentioned.
- the resin of this embodiment may be a resin copolymerized with a polymerizable monomer other than the above-described phenols.
- the copolymerization monomer is not particularly limited, and for example, naphthol, methyl naphthol, methoxy naphthol, dihydroxynaphthalene, indene, hydroxyindene, benzofuran, hydroxyanthracene, acenaphthylene, biphenyl, bisphenol, trisphenol, dicyclopentadiene, tetrahydroindene, 4-vinylcyclohexene, norbornadiene, vinylnorbornaene, pinene, limonene and the like can be mentioned.
- the resin of this embodiment may be a copolymer of two or more (for example, a quaternary system) of the compound represented by the above formula (1) and the above-described phenols.
- it may be a ternary or more (for example, ternary to quaternary) copolymer of the above-mentioned copolymerization monomer.
- the weight average molecular weight (Mw) of the resin of this embodiment is not particularly limited, but is preferably 500 to 30,000, more preferably 750 to 20,000 in terms of polystyrene by GPC measurement. Further, from the viewpoint of increasing the crosslinking efficiency and suppressing the volatile components in the baking, the resin of the present embodiment has a dispersity (weight average molecular weight Mw / number average molecular weight Mn) in the range of 1.2 to 7. preferable.
- the resin represented by the above-described formula (1) and / or the resin having a structural unit derived from the compound represented by the formula (1) is suitable for a solvent from the viewpoint of easier application of a wet process. It is preferable that the solubility is high. More specifically, when these compounds and / or resins use propylene glycol monomethyl ether (PGME) and / or propylene glycol monomethyl ether acetate (PGMEA) as a solvent, the solubility in the solvent is 10% by mass or more. Is preferred.
- the solubility in PGM and / or PGMEA is defined as “resin mass ⁇ (resin mass + solvent mass) ⁇ 100 (mass%)”.
- the resin having a structural unit derived from the compound has a solubility in PGMEA of “10% by mass or more”, and it is evaluated that it does not dissolve when the solubility is “less than 10% by mass”. is there.
- composition contains resin which has a structural unit derived from the compound represented by the compound represented by Formula (1), or Formula (1).
- the composition of the present embodiment contains the compound or resin of the present embodiment, a wet process can be applied and the composition has excellent heat resistance and planarization characteristics. Furthermore, since the composition of this embodiment contains a compound or a resin, deterioration of the film during high-temperature baking is suppressed, and a lithography film having excellent etching resistance against oxygen plasma etching or the like can be formed. Furthermore, since the composition of this embodiment is excellent also in adhesiveness with a resist layer, it can form an excellent resist pattern. For this reason, the composition of this embodiment is suitably used for forming a film for lithography.
- composition of the present embodiment has a high refractive index because of the high aromatic ring density, and coloration is also suppressed by a wide range of heat treatments from a low temperature to a high temperature. For this reason, the composition of this embodiment is used suitably also for optical component formation.
- the lithography film means a film having a large dry etching rate as compared with the photoresist layer.
- the lithography film include a film for embedding and planarizing in a step of a layer to be processed, a resist upper layer film, a resist lower layer film, and the like.
- the film-forming composition for lithography of this embodiment contains a solvent, a crosslinking agent, a crosslinking accelerator, an acid generator, a basic compound, and other components as necessary in addition to the compound or resin of this embodiment. May be. Hereinafter, these optional components will be described.
- the film forming composition for lithography in the present embodiment may contain a solvent.
- the solvent is not particularly limited as long as it can dissolve the compound or resin of the present embodiment.
- the compound or resin of this embodiment is excellent in the solubility with respect to an organic solvent as above-mentioned, various organic solvents are used suitably.
- the solvent is not particularly limited, but, for example, ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; cellosolv solvents such as propylene glycol monomethyl ether and propylene glycol monomethyl ether acetate; ethyl lactate, methyl acetate, and ethyl acetate Ester solvents such as butyl acetate, isoamyl acetate, ethyl lactate, methyl methoxypropionate, methyl hydroxyisobutyrate; alcohol solvents such as methanol, ethanol, isopropanol, 1-ethoxy-2-propanol; toluene, xylene, anisole, etc. Aromatic hydrocarbons and the like. These solvents are used singly or in combination of two or more.
- At least one selected from the group consisting of cyclohexanone, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, ethyl lactate, methyl hydroxyisobutyrate, and anisole is preferable.
- the content of the solvent is not particularly limited, but is preferably 100 to 10,000 parts by mass with respect to 100 parts by mass of the compound or resin of the present embodiment, from the viewpoint of solubility and film formation, The amount is more preferably 5,000 parts by mass, and further preferably 200 to 1,000 parts by mass.
- the film-forming composition for lithography of the present embodiment may contain a crosslinking agent from the viewpoint of suppressing intermixing. Although it does not specifically limit as a crosslinking agent, For example, what was described in the international publication 2013/024779 and the international publication 2018/016614 can be used.
- the crosslinking agent is not particularly limited, and examples thereof include phenol compounds, epoxy compounds, cyanate compounds, amino compounds, benzoxazine compounds, acrylate compounds, melamine compounds, guanamine compounds, glycoluril compounds, urea compounds, isocyanate compounds, azide compounds, and the like. Is mentioned. These crosslinking agents are used singly or in combination of two or more. Among these, it is preferable that it is 1 or more types selected from the group which consists of a benzoxazine compound, an epoxy compound, and a cyanate compound, and a benzoxazine compound is more preferable from a viewpoint of an etching tolerance improvement.
- the content of the crosslinking agent is not particularly limited, but is preferably 0.1 to 100 parts by weight with respect to 100 parts by weight of the compound or resin of the present embodiment, and 5 to 50 parts by weight. More preferably, it is 10 to 40 parts by mass.
- the content of the crosslinking agent is within the above range, the occurrence of a mixing phenomenon with the resist layer tends to be suppressed, the antireflection effect is enhanced, and the film forming property after crosslinking is enhanced. is there.
- the film-forming composition for lithography of the present embodiment may contain a crosslinking accelerator in order to accelerate the crosslinking reaction (curing reaction) as necessary.
- a crosslinking accelerator include radical polymerization initiators.
- the radical polymerization initiator may be a photopolymerization initiator that initiates radical polymerization with light, or a thermal polymerization initiator that initiates radical polymerization with heat.
- the radical polymerization initiator include at least one selected from the group consisting of a ketone photopolymerization initiator, an organic peroxide polymerization initiator, and an azo polymerization initiator.
- Such radical polymerization initiator is not particularly limited, but for example, those described in International Publication No. 2018/016614 can be used.
- radical polymerization initiators are used singly or in combination of two or more.
- the content of the radical polymerization initiator in the present embodiment may be a stoichiometrically required amount, but 0.05 to 25 parts by mass when the compound or resin of the present embodiment is 100 parts by mass.
- the amount is preferably 0.1 to 10 parts by mass.
- the content of the radical polymerization initiator is 0.05 parts by mass or more, there is a tendency to prevent the curing from being insufficient, and on the other hand, the content of the radical polymerization initiator is 25 parts by mass or less. In this case, the long-term storage stability at room temperature tends to be prevented from being impaired.
- the film-forming composition for lithography of the present embodiment may contain an acid generator from the viewpoint of further promoting the crosslinking reaction by heat.
- an acid generator those that generate an acid by thermal decomposition and those that generate an acid by light irradiation are known, and any of them can be used.
- an acid generator what was described in the international publication 2013/024779 can be used, for example.
- the content of the acid generator in the film forming composition for lithography is not particularly limited, but is preferably 0.1 to 50 parts by mass, more preferably 100 parts by mass of the compound or resin of the present embodiment. Is 0.5 to 40 parts by mass.
- the content of the acid generator is within the above range, the crosslinking reaction tends to be enhanced, and the occurrence of a mixing phenomenon with the resist layer tends to be suppressed.
- the film-forming composition for lithography of the present embodiment may contain a basic compound from the viewpoint of improving storage stability.
- the basic compound plays a role in preventing a small amount of acid generated from the acid generator from causing the crosslinking reaction to proceed, that is, a quencher for the acid.
- a basic compound is not particularly limited, and examples thereof include those described in International Publication No. 2013/024779.
- the content of the basic compound in the film-forming composition for lithography of the present embodiment is not particularly limited, but is 0.001 to 2 parts by mass with respect to 100 parts by mass of the compound or resin of the present embodiment.
- the amount is preferably 0.01 to 1 part by mass.
- the film-forming composition for lithography of the present embodiment may contain other resins and / or compounds for the purpose of imparting curability by heat or light and controlling the absorbance.
- Such other resins and / or compounds are not particularly limited, and include, for example, naphthol resins, xylene resins, naphthol-modified resins, phenol-modified resins of naphthalene resins; polyhydroxystyrene, dicyclopentadiene resins, (meth) acrylates, Includes resins and aromatic rings containing heterocycles having heteroatoms such as naphthalenes such as dimethacrylate, trimethacrylate, tetramethacrylate, vinylnaphthalene, polyacenaphthylene, biphenyl rings such as phenanthrenequinone and fluorene, and thiophene.
- Resins having no alicyclic structure such as rosin resins, cyclodextrins, adamantane (poly) ols, tricyclodecane (poly) ols, and derivatives thereof.
- the film-forming composition for lithography of this embodiment may contain a known additive.
- Known additives include, but are not limited to, for example, heat and / or photocuring catalysts, polymerization inhibitors, flame retardants, fillers, coupling agents, thermosetting resins, photocurable resins, dyes, and pigments. , Thickeners, lubricants, antifoaming agents, leveling agents, ultraviolet absorbers, surfactants, colorants, nonionic surfactants, and the like.
- the underlayer film for lithography in the present embodiment is formed from the film forming composition for lithography of the present embodiment.
- the resist pattern forming method of the present embodiment includes a lower layer film forming step of forming a lower layer film on the substrate using the composition of the present embodiment, and at least one layer on the lower layer film formed by the lower layer film forming step.
- the resist pattern forming method of the present embodiment can be used for forming various patterns, and is preferably an insulating film pattern forming method.
- the circuit pattern forming method of the present embodiment includes a lower layer film forming step of forming a lower layer film on the substrate using the composition of the present embodiment, and an intermediate layer film on the lower layer film formed by the lower layer film forming step.
- the intermediate layer film pattern forming step and the intermediate layer film pattern formed in the intermediate layer film pattern forming step as a mask Comprising a lower layer film pattern forming step of forming a lower layer film pattern as etching, and the substrate pattern forming step of forming a pattern the substrate an underlayer film pattern formed by the lower-layer film pattern forming step as a mask to etch the substrate.
- the underlayer film for lithography of this embodiment is formed from the film forming composition for lithography of this embodiment.
- the formation method is not particularly limited, and a known method can be applied.
- the organic solvent is volatilized and removed to remove the lower layer.
- a film can be formed.
- the baking temperature is not particularly limited, but is preferably in the range of 80 to 450 ° C., more preferably 200 to 400 ° C.
- the baking time is not particularly limited, but is preferably within the range of 10 to 300 seconds.
- the thickness of the lower layer film can be appropriately selected according to the required performance, and is not particularly limited, but is preferably 30 to 20,000 nm, and more preferably 50 to 15,000 nm.
- the lower layer film After forming the lower layer film, in the case of a two-layer process, it is preferable to prepare a silicon-containing resist layer or a single layer resist made of hydrocarbon on the lower layer film. In the case of a three-layer process, on the lower layer film It is preferable to prepare a silicon-containing intermediate layer and further to form a single-layer resist layer not containing silicon on the silicon-containing intermediate layer. In this case, a well-known thing can be used as a photoresist material for forming this resist layer.
- a silicon-containing resist material for a two-layer process from the viewpoint of oxygen gas etching resistance, a silicon atom-containing polymer such as a polysilsesquioxane derivative or a vinylsilane derivative is used as a base polymer, and an organic solvent, an acid generator, If necessary, a positive photoresist material containing a basic compound or the like is preferably used.
- a silicon atom-containing polymer a known polymer used in this type of resist material can be used.
- a polysilsesquioxane-based intermediate layer is preferably used as the silicon-containing intermediate layer for the three-layer process.
- the intermediate layer With an effect as an antireflection film, reflection tends to be effectively suppressed.
- the k value increases and the substrate reflection tends to increase, but the reflection is suppressed in the intermediate layer.
- the substrate reflection can be reduced to 0.5% or less.
- the intermediate layer having such an antireflection effect is not limited to the following, but for 193 nm exposure, a polysilsesquide crosslinked with an acid or heat in which a light absorbing group having a phenyl group or a silicon-silicon bond is introduced. Oxane is preferably used.
- an intermediate layer formed by a chemical vapor deposition (CVD) method can also be used.
- the intermediate layer produced by the CVD method and having a high effect as an antireflection film is not limited to the following, for example, a SiON film is known.
- the upper layer resist in the three-layer process may be either a positive type or a negative type, and the same one as a commonly used single layer resist can be used.
- the lower layer film in this embodiment can also be used as an antireflection film for a normal single layer resist or a base material for suppressing pattern collapse. Since the lower layer film has excellent etching resistance for the base processing, it can be expected to function as a hard mask for the base processing.
- a wet process such as spin coating or screen printing is preferably used as in the case of forming the lower layer film.
- prebaking is usually performed, but this prebaking is preferably performed at 80 to 180 ° C. for 10 to 300 seconds.
- a resist pattern can be obtained by performing exposure, post-exposure baking (PEB), and development.
- the thickness of the resist film is not particularly limited, but is generally preferably 30 to 500 nm, more preferably 50 to 400 nm.
- the exposure light may be appropriately selected and used according to the photoresist material to be used.
- high energy rays having a wavelength of 300 nm or less, specifically, 248 nm, 193 nm, 157 nm excimer laser, 3 to 20 nm soft X-ray, electron beam, X-ray and the like can be mentioned.
- the resist pattern formed by the above-described method is one in which pattern collapse is suppressed by the lower layer film. Therefore, by using the lower layer film in the present embodiment, a finer pattern can be obtained, and the exposure amount necessary for obtaining the resist pattern can be reduced.
- gas etching is preferably used as the etching of the lower layer film in the two-layer process.
- gas etching etching using oxygen gas is suitable.
- an inert gas such as He or Ar, or CO, CO 2 , NH 3 , SO 2 , N 2 , NO 2 , or H 2 gas.
- gas etching can be performed only with CO, CO 2 , NH 3 , N 2 , NO 2 , and H 2 gas without using oxygen gas.
- the latter gas is preferably used for side wall protection for preventing undercut of the pattern side wall.
- gas etching is also preferably used for etching the intermediate layer in the three-layer process.
- the gas etching the same one as described in the above two-layer process can be applied.
- the processing of the intermediate layer in the three-layer process is preferably performed using a fluorocarbon gas and a resist pattern as a mask.
- the lower layer film can be processed by, for example, oxygen gas etching using the intermediate layer pattern as a mask.
- a silicon oxide film, a silicon nitride film, or a silicon oxynitride film is formed by a CVD method, an ALD method, or the like.
- the method for forming the nitride film is not limited to the following, but for example, a method described in Japanese Patent Application Laid-Open No. 2002-334869 (Patent Document 9) and WO 2004/066377 (Patent Document 10) can be used.
- a photoresist film can be formed directly on such an intermediate film, but an organic antireflection film (BARC) is formed on the intermediate film by spin coating, and a photoresist film is formed thereon. May be.
- BARC organic antireflection film
- a polysilsesquioxane-based intermediate layer is also preferably used.
- the resist intermediate layer film By providing the resist intermediate layer film with an effect as an antireflection film, reflection tends to be effectively suppressed.
- Specific materials of the polysilsesquioxane-based intermediate layer are not limited to the following, but are described, for example, in JP-A-2007-226170 (Patent Document 11) and JP-A-2007-226204 (Patent Document 12). Can be used.
- Etching of the next substrate can also be performed by a conventional method.
- the substrate is SiO 2 or SiN
- Etching mainly with gas can be performed.
- the substrate is etched with a chlorofluorocarbon gas, the silicon-containing resist of the two-layer resist process and the silicon-containing intermediate layer of the three-layer process are peeled off simultaneously with the substrate processing.
- the silicon-containing resist layer or the silicon-containing intermediate layer is separately peeled, and generally, dry etching peeling with a chlorofluorocarbon-based gas is performed after the substrate is processed. .
- the lower layer film in the present embodiment has a feature that the etching resistance of the substrate is excellent.
- known substrates can be appropriately selected and used, and are not particularly limited. Examples thereof include Si, ⁇ -Si, p-Si, SiO 2 , SiN, SiON, W, TiN, and Al. It is done.
- the substrate may be a laminate having a film to be processed (substrate to be processed) on a base material (support). Examples of such a film to be processed include various low-k films and stoppers thereof such as Si, SiO 2 , SiON, SiN, p-Si, ⁇ -Si, W, W-Si, Al, Cu, and Al-Si. A film etc.
- the thing of a different material from a base material (support body) is used normally.
- the thickness of the substrate or film to be processed is not particularly limited, but it is usually preferably about 50 to 1,000,000 nm, more preferably 75 to 50,000 nm.
- the resist permanent film of the present embodiment includes the composition of the present embodiment.
- the resist permanent film formed by applying the composition of the present embodiment is suitable as a permanent film remaining in the final product after forming a resist pattern as necessary.
- Specific examples of the permanent film include a solder resist, a package material, an underfill material, a package adhesive layer such as a circuit element, an adhesive layer between an integrated circuit element and a circuit board, and a thin film display protective film for a thin display. Examples include a liquid crystal color filter protective film, a black matrix, and a spacer.
- the resist permanent film containing the composition of the present embodiment has excellent advantages in that it has excellent heat resistance and moisture resistance and is less contaminated by sublimation components.
- a display material is a material having high sensitivity, high heat resistance, and moisture absorption reliability with little image quality deterioration due to important contamination.
- composition of this embodiment is used for resist permanent film applications, in addition to the curing agent, if necessary, various additions such as other resins, surfactants and dyes, fillers, crosslinking agents, dissolution accelerators, etc.
- a composition for a resist permanent film can be obtained by adding an agent and dissolving in an organic solvent.
- composition of the present embodiment can be prepared by blending the above components and mixing them using a stirrer or the like. Moreover, when the composition of this embodiment contains a filler and a pigment, it can prepare by disperse
- dispersers such as a dissolver, a homogenizer, and a 3 roll mill.
- the method for purifying the compound or resin of the present embodiment includes an extraction step in which a solution containing an organic solvent that is not arbitrarily miscible with the compound or resin of the present embodiment and water is contacted with an acidic aqueous solution for extraction. More specifically, the purification method of the present embodiment is carried out by dissolving the compound or resin of the present embodiment in an organic solvent that is not arbitrarily miscible with water, contacting the solution with an acidic aqueous solution, and performing an extraction treatment. The metal component contained in the solution (A) containing the compound or resin in the form and the organic solvent is transferred to the aqueous phase, and then the organic phase and the aqueous phase are separated and purified.
- the purification method of this embodiment the content of various metals in the compound or resin of this embodiment can be significantly reduced.
- an organic solvent which is not arbitrarily miscible with water means that the solubility in water at 20 ° C. is less than 50% by mass, and from the viewpoint of productivity, it is preferably less than 25% by mass. .
- the organic solvent that is not arbitrarily miscible with water is not particularly limited, but an organic solvent that can be safely applied to a semiconductor manufacturing process is preferable.
- the amount of the organic solvent to be used is usually about 1 to 100 times by weight with respect to the compound or resin of the present embodiment.
- solvent used include those described in International Publication No. WO2015 / 080240. These solvents are used singly or in combination of two or more. Among these, toluene, 2-heptanone, cyclohexanone, cyclopentanone, methyl isobutyl ketone, propylene glycol monomethyl ether acetate, ethyl acetate and the like are preferable, and cyclohexanone and propylene glycol monomethyl ether acetate are particularly preferable.
- the acidic aqueous solution used is appropriately selected from aqueous solutions in which generally known organic and inorganic compounds are dissolved in water. For example, what is described in international publication WO2015 / 080240 is mentioned. These acidic aqueous solutions are used singly or in combination of two or more. Among these, sulfuric acid, nitric acid, and aqueous solutions of carboxylic acids such as acetic acid, succinic acid, tartaric acid, and citric acid are preferable, and aqueous solutions of sulfuric acid, succinic acid, tartaric acid, and citric acid are preferable.
- polyvalent carboxylic acids such as succinic acid, tartaric acid, and citric acid are coordinated to metal ions to produce a chelate effect, it is considered that the metal can be removed more.
- water used here one having a low metal content, for example, ion-exchanged water, is preferably used in accordance with the object of the present invention.
- the pH of the acidic aqueous solution used in the present embodiment is not particularly limited, but if the acidity of the aqueous solution becomes too large, it may adversely affect the compound represented by formula (1) or the resin having a structural unit derived from the compound. Is not preferable.
- the pH range is about 0 to 5, more preferably about pH 0 to 3.
- the amount of the acidic aqueous solution used in the present embodiment is not particularly limited. However, if the amount is too small, it is necessary to increase the number of extractions for metal removal. Conversely, if the amount of the aqueous solution is too large, Large amounts can cause operational problems.
- the amount of the aqueous solution used is usually 10 to 200% by mass, preferably 20 to 100% by mass, based on the solution of the compound or resin of the present embodiment dissolved in an organic solvent.
- the metal component is extracted by bringing the acidic aqueous solution as described above into contact with the solution (A) containing an organic solvent that is not arbitrarily miscible with the compound or resin of the present embodiment and water.
- the temperature at the time of the extraction treatment is usually 20 to 90 ° C, preferably 30 to 80 ° C.
- the extraction operation is performed, for example, by mixing the mixture well by stirring or the like and then allowing it to stand. Thereby, the metal component contained in the solution containing the compound or resin of the present embodiment and the organic solvent is transferred to the aqueous phase. Moreover, the acidity of a solution falls by this operation, and the quality change of the compound or resin of this embodiment can be suppressed.
- the standing time is not particularly limited. However, if the standing time is too short, the separation between the solution phase containing the organic solvent and the aqueous phase is not preferable. Usually, the time to stand still is 1 minute or more, More preferably, it is 10 minutes or more, More preferably, it is 30 minutes or more.
- the extraction process may be performed only once, but it is also effective to repeat the operations of mixing, standing, and separation a plurality of times.
- the solution (A) containing the compound or resin of the present embodiment and the organic solvent extracted and recovered from the aqueous solution after the treatment is obtained, Further, it is preferable to perform extraction with water.
- the extraction operation is performed by allowing the mixture to stand after mixing well by stirring or the like.
- the water used here is preferably one having a low metal content, such as ion-exchanged water, for the purpose of the present invention.
- the extraction process may be performed only once, but it is also effective to repeat the operations of mixing, standing, and separation a plurality of times.
- the use ratio of both in the extraction process, conditions such as temperature and time are not particularly limited, but may be the same as in the case of the contact process with the acidic aqueous solution.
- the water mixed in the solution containing the compound or resin of the present embodiment and the organic solvent thus obtained can be easily removed by performing an operation such as vacuum distillation. Moreover, an organic solvent can be added as needed and the density
- the method for obtaining only the compound or resin of the present embodiment from the obtained solution containing the compound or resin of the present embodiment and an organic solvent is performed by a known method such as removal under reduced pressure, separation by reprecipitation, or a combination thereof. Can do. If necessary, known processes such as a concentration operation, a filtration operation, a centrifugal separation operation, and a drying operation can be performed.
- Carbon concentration and oxygen concentration By organic elemental analysis, the carbon concentration and oxygen concentration (mass%) of the compound or resin were measured using “CHN Coder MT-6” manufactured by Yanaco Analytical Industries.
- the molecular weight of the compound or resin was measured by LC-MS analysis using “Acquity UPLC / MALDI-Synapt HDMS” manufactured by Water.
- the reaction solution was cooled and concentrated, added with 369 g of o-xylene and 123 g of butyl acetate, washed with aqueous sodium carbonate or pure water, and then added with aqueous sodium hydroxide, and the aqueous layer was recovered and dissolved in an ethyl acetate solvent.
- 20.0 g of the target compound (BiP-1) represented by the following formula (BiP-1) was obtained.
- the obtained compound (BiP-1) was measured to have a molecular weight of 620 as described above.
- the obtained compound (BiP-1) had a carbon concentration of 83.2% by mass and an oxygen concentration of 10.3% by mass.
- Synthesis Example 4 Synthesis of BiP-4 Same as Synthesis Example 1 except that 2,3,4,4′-tetrahydroxybenzophenone was used instead of 2,2-bis (4-hydroxyphenyl) propane To obtain 18 g of the target compound (BiP-4) represented by the following formula (BiP-4). The obtained compound (BiP-4) was measured for molecular weight by the above method and found to be 656. In addition, the obtained compound (BiP-4) had a carbon concentration of 71.3% by mass and an oxygen concentration of 24.4% by mass. The obtained compound (BiP-4) was measured by 1 H-NMR (500 MHz, DMSO-d 6 ).
- the reaction solution was cooled and concentrated, added with 369 g of o-xylene and 123 g of butyl acetate, washed with aqueous sodium carbonate or pure water, and then added with aqueous sodium hydroxide, and the aqueous layer was recovered and dissolved in an ethyl acetate solvent. After extraction and concentration, 1000 g of heptane was added to precipitate a solid, and after separation, 98.0 g of the target resin (RBiP-1) represented by the following formula (RBiP-1) was obtained.
- L represents a residue derived from 4-biphenylaldehyde, and q represents the number of repeating units.
- L represents a residue derived from 4-biphenylaldehyde
- q represents the number of repeating units.
- L represents a residue derived from 4-biphenylaldehyde
- q represents the number of repeating units.
- L represents a residue derived from 2-naphthaldehyde
- q represents the number of repeating units.
- L represents a residue derived from 2,2′-dimethylpropanal, and q represents the number of repeating units.
- ethylbenzene (special grade reagent manufactured by Wako Pure Chemical Industries, Ltd.) as a diluent solvent was added to the reaction solution, and after standing, the lower aqueous phase was removed. Further, neutralization and washing with water were carried out, and ethylbenzene and unreacted 1,5-dimethylnaphthalene were distilled off under reduced pressure to obtain 1.25 kg of a light brown solid dimethylnaphthalene formaldehyde resin.
- ethylbenzene special grade reagent manufactured by Wako Pure Chemical Industries, Ltd.
- the molecular weight of the obtained dimethylnaphthalene formaldehyde resin was number average molecular weight (Mn): 562, weight average molecular weight (Mw): 1168, and dispersity (Mw / Mn): 2.08.
- a four-necked flask having an internal volume of 0.5 L equipped with a Dimroth condenser, a thermometer, and a stirring blade was prepared.
- This four-necked flask was charged with 100 g (0.51 mol) of the dimethylnaphthalene formaldehyde resin obtained as described above and 0.05 g of paratoluenesulfonic acid in a nitrogen stream, and the temperature was raised to 190 ° C. Stir after heating for hours. Thereafter, 52.0 g (0.36 mol) of 1-naphthol was further added, and the temperature was further raised to 220 ° C. to react for 2 hours.
- the obtained resin (CR-1) had Mn: 885, Mw: 2220, and Mw / Mn: 2.51.
- the obtained resin (CR-1) had a carbon concentration of 89.1% by mass and an oxygen concentration of 4.5% by mass.
- Mn, Mw and Mw / Mn of dimethylnaphthalene formaldehyde resin and resin (CR-1) were determined by gel permeation chromatography (GPC) analysis in terms of polystyrene under the following measurement conditions.
- GPC gel permeation chromatography
- Etching resistance was evaluated according to the following procedure. First, under the same conditions as in Example 1 except that a phenol novolac resin (PSM4357 manufactured by Gunei Chemical Co., Ltd.) was used instead of the compound (BiP-1) used in Example 1, an underlayer film containing a phenol novolac resin was formed. Produced.
- a phenol novolac resin PSM4357 manufactured by Gunei Chemical Co., Ltd.
- Example 15 to 28 Each solution of the lower layer film forming material for lithography prepared in each of the above Examples 1 to 14 was applied on a 300 nm thick SiO 2 substrate and baked at 240 ° C. for 60 seconds and further at 400 ° C. for 120 seconds. A lower layer film having a thickness of 70 nm was formed. On this lower layer film, an ArF resist solution was applied and baked at 130 ° C. for 60 seconds to form a 140 nm-thick photoresist layer.
- the compound represented by the following formula (11) is 4.15 g of 2-methyl-2-methacryloyloxyadamantane, 3.00 g of methacryloyloxy- ⁇ -butyrolactone, 2.08 g of 3-hydroxy-1-adamantyl methacrylate, azobis 0.38 g of isobutyronitrile was dissolved in 80 mL of tetrahydrofuran to obtain a reaction solution.
- This reaction solution was polymerized for 22 hours under a nitrogen atmosphere while maintaining the reaction temperature at 63 ° C., and then the reaction solution was dropped into 400 mL of n-hexane.
- the product resin thus obtained was coagulated and purified, and the resulting white powder was filtered and obtained by drying overnight at 40 ° C. under reduced pressure.
- the numbers in the formula (11) indicate the ratio of each structural unit.
- the photoresist layer was exposed using an electron beam drawing apparatus (ELIONX, ELS-7500, 50 keV), baked at 115 ° C. for 90 seconds (PEB), and 2.38 mass% tetramethylammonium hydroxide (A positive resist pattern was obtained by developing with an aqueous solution of TMAH for 60 seconds.
- ELIONX electron beam drawing apparatus
- ELS-7500 ELS-7500, 50 keV
- PEB baked at 115 ° C. for 90 seconds
- TMAH 2.38 mass% tetramethylammonium hydroxide
- Table 2 shows the results of observation of defects in the obtained resist patterns of 55 nm L / S (1: 1) and 80 nm L / S (1: 1).
- “good” indicates that no large defect was found in the formed resist pattern
- “bad” indicates that a large defect was found in the formed resist pattern.
- CR-1 phenol-modified dimethylnaphthalene formaldehyde resin
- Examples 15 to 28 using any of BiP-1 to BiP-6 and RBiP-1 to RBiP-6 which are the compounds or resins of this embodiment It was confirmed that the resist pattern shape was good and no large defects were observed. Furthermore, it was confirmed that each of Examples 15 to 28 was significantly superior in both resolution and sensitivity as compared with Comparative Example 2 in which no lower layer film was formed.
- the good resist pattern shape after development indicates that the lower layer film forming material for lithography used in Examples 15 to 28 has good adhesion to the resist material (photoresist material or the like). Yes.
- Example 29 to 42 A solution of a material for forming a lower layer film for lithography of each of Examples 1 to 14 was applied on a SiO 2 substrate having a film thickness of 300 nm, and baked at 240 ° C. for 60 seconds and further at 400 ° C. for 120 seconds, thereby having a film thickness of 80 nm. A lower layer film was formed. On this lower layer film, a silicon-containing intermediate layer material was applied and baked at 200 ° C. for 60 seconds to form an intermediate layer film having a thickness of 35 nm. Further, the above ArF resist solution was applied on this intermediate layer film and baked at 130 ° C. for 60 seconds to form a 150 nm-thick photoresist layer.
- the silicon-containing intermediate layer material a silicon atom-containing polymer described in ⁇ Synthesis Example 1> of JP-A-2007-226170 was used.
- the photoresist layer was subjected to mask exposure using an electron beam lithography apparatus (ELIONX, ELS-7500, 50 keV), baked at 115 ° C. for 90 seconds (PEB), and 2.38 mass% tetramethylammonium hydroxide.
- TMAH aqueous solution for 60 seconds
- a positive resist pattern of 55 nm L / S (1: 1) was obtained.
- the silicon-containing intermediate layer film (SOG) was dry-etched using the obtained resist pattern as a mask, and then the obtained silicon-containing intermediate layer film pattern was Dry etching processing of the lower layer film using the mask and dry etching processing of the SiO 2 film using the obtained lower layer film pattern as a mask were sequentially performed.
- Example 43 to 48 An optical component forming composition solution having the same composition as the solution of the lower layer film forming material for lithography prepared in each of the above Examples 1 to 6 is applied onto a 300 nm thick SiO 2 substrate and baked at 260 ° C. for 300 seconds. Thus, an optical component forming film having a thickness of 100 nm was formed. Next, using a vacuum ultraviolet multiple incident angle spectroscopic ellipsometer (VUV-VASE) manufactured by JA Woollam Japan, a refractive index and transparency test at a wavelength of 633 nm were conducted. Sex was evaluated. The evaluation results are shown in Table 4.
- VUV-VASE vacuum ultraviolet multiple incident angle spectroscopic ellipsometer
- Table 5 shows the results of heat resistance tests and resist performance evaluations using BiP-1, BiP-2, RBiP-1, RBiP-2, and CR-1.
- a uniform resist composition was spin-coated on a clean silicon wafer and then pre-exposure bake (PB) in an oven at 110 ° C. to form a resist film having a thickness of 60 nm.
- the obtained resist film was irradiated with an electron beam with a line and space setting of 1: 1 at 50 nm intervals using an electron beam drawing apparatus (ELS-7500, manufactured by Elionix Co., Ltd.). After the irradiation, the resist films were each heated at a predetermined temperature for 90 seconds, and developed by being immersed in a TMAH 2.38 mass% alkali developer for 60 seconds.
- the resist film was washed with ultrapure water for 30 seconds and dried to form a positive resist pattern.
- the line and space was observed with a scanning electron microscope (S-4800, manufactured by Hitachi High-Technology Corporation), and the reactivity of the resist composition by electron beam irradiation was evaluated.
- S-4800 scanning electron microscope
- “good” indicates that the resist pattern shape forms a rectangle and no defect is observed
- “defective” indicates that the pattern does not form a rectangle or a defect is observed.
- the resin satisfying the requirements of the present invention has higher heat resistance than the comparative compound (CR-1) and can impart a good resist pattern shape.
- the same effects can be obtained with resins other than those described in the examples.
- B-1 A naphthoquinone diazide photosensitizer of the following chemical structural formula (G) (4NT-300, Toyo Gosei Co., Ltd.) The following were used as the solvent.
- S-1 Propylene glycol monomethyl ether (Tokyo Chemical Industry Co., Ltd.)
- the radiation-sensitive composition obtained above was spin-coated on a clean silicon wafer, followed by pre-exposure baking (PB) in an oven at 110 ° C. to form a resist film having a thickness of 200 nm.
- the resist film was exposed to ultraviolet rays using an ultraviolet exposure device (Mikasa Mask Aligner MA-10).
- an ultraviolet exposure device Moikasa Mask Aligner MA-10.
- the resist film was heated at 110 ° C. for 90 seconds and immersed in TMAH 2.38 mass% alkaline developer for 60 seconds for development. Thereafter, the resist film was washed with ultrapure water for 30 seconds and dried to form a 5 ⁇ m positive resist pattern.
- the obtained line and space was observed with a scanning electron microscope (S-4800, manufactured by Hitachi High-Technology Corporation).
- S-4800 manufactured by Hitachi High-Technology Corporation.
- the line edge roughness was good when the pattern irregularities were less than 50 nm.
- the radiation sensitive compositions in Examples 53 to 56 have small roughness and can form a resist pattern with a favorable shape as compared with the radiation sensitive composition in Comparative Example 4. I understood. As long as the above-described requirements of the present invention are satisfied, radiation-sensitive compositions other than those described in the examples also exhibit the same effect.
- the material for forming a lower layer film for lithography using the same is suitable for embedding characteristics and film surface flatness. Can be increased relatively advantageously.
- the thermal decomposition temperature is 150 ° C. or higher (Evaluation A), and since it has high heat resistance, it can be used even under high temperature baking conditions.
- the residual moisture and PGMEA were concentrated and distilled by reducing the pressure in the flask to 200 hPa or less while heating to 80 ° C. Thereafter, it was diluted with EL grade PGMEA (reagent manufactured by Kanto Chemical Co., Inc.), and the concentration was adjusted to 10% by mass to obtain a PGMEA solution of BiP-1 with a reduced metal content.
- EL grade PGMEA reagent manufactured by Kanto Chemical Co., Inc.
- the compound and resin of the present invention have high heat resistance and high solvent solubility, and a wet process can be applied. Therefore, the film forming material for lithography using the compound or resin of the present invention and the film for lithography can be used widely and effectively in various applications requiring these performances.
- the present invention provides, for example, an electrical insulating material, a resist resin, a semiconductor sealing resin, an adhesive for printed wiring boards, an electrical laminated board mounted on electrical equipment / electronic equipment / industrial equipment, and electrical equipment.
- Matrix resins for prepregs, built-up laminate materials, fiber reinforced plastic resins, sealing resins for liquid crystal display panels, paints, various coating agents, adhesives, and semiconductor coatings mounted on electronic and industrial equipment It can be used widely and effectively in agents, resist resins for semiconductors, resins for forming lower layer films, and the like. In particular, the present invention can be used particularly effectively in the field of lithography films.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials For Photolithography (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
Description
[1]
下記式(1)で表される化合物。
Aは、炭素数1~12の基であり、
R1は、炭素数1~30の2n価の基であり、
R2~R5は、各々独立して、炭素数1~10の直鎖状、分岐状若しくは環状のアルキル基、炭素数1~10のアルコキシ基、炭素数6~10のアリール基、炭素数2~10のアルケニル基、炭素数2~10のアルキニル基、チオール基又は水酸基であり、
R4の少なくとも1つ及び/又はR5の少なくとも1つは、水酸基及び/又はチオール基であり、
m2及びm3は、各々独立して0~8の整数であり、
m4及びm5は、各々独立して0~9の整数であり、
nは、1~4の整数であり、
p2~p5は、各々独立して0~2の整数である。)
[1-1]
Aが、カルボニル基、チオカルボニル基、メチレン基、エチレン基、プロピレン基、ブチレン基、ヘキサフルオロプロピレン基、フェニルエチレン基、ジフェニルメチレン基、シクロヘキシレン基、トリメチルシクロヘキシレン基、及びシクロドデシレン基からなる群から選択される、[1]の化合物。
[1-2]
R1が、炭素数1~30の2n価の炭化水素基である、[1]又は[1-1]の化合物。
[1-3]
前記炭素数1~30の2n価の炭化水素基が、芳香族基を含む、[1-2]の化合物。
[2]
前記式(1)中、R2の少なくとも1つ及び/又はR3の少なくとも1つが、水酸基及び/又はチオール基である、[1]~[1-3]のいずれかの化合物。
[3]
前記式(1)で表される化合物が、下記式(1a)で表される化合物である、[1]~[2]のいずれかの化合物。
A、R2~R5及びnは、それぞれ前記式(1)において定義したとおりであり、
R1aは、水素原子、又は炭素数1~10の1価の基であり、
R1bは、炭素数1~25のn価の基であり、
m2及びm3は、各々独立して、0~4の整数であり、
m4及びm5は、各々独立して、0~5の整数である。)
[3-1]
R1bが、炭素数1~25のn価の炭化水素基である、[3]の化合物。
[3-2]
前記炭素数1~25のn価の炭化水素基が、芳香族基を含む、[3-1]の化合物。
[4]
前記式(1a)で表される化合物が、下記式(1b)で表される化合物である、[3]~[3-2]のいずれかの化合物。
A、R4、R5、R1a、R1b、m4、m5及びnは、それぞれ前記式(1a)において定義したとおりであり、
R6及びR7は、各々独立して、炭素数1~10の直鎖状、分岐状若しくは環状のアルキル基、炭素数6~10のアリール基、炭素数2~10のアルケニル基、炭素数2~10のアルキニル基、チオール基又は水酸基であり、
m6及びm7は、各々独立して、0~3の整数であり、
R10及びR11は、水素原子である。)
[5]
前記式(1b)で表される化合物が、下記式(1c)で表される化合物である、[4]の化合物。
A、R1a、R1b、R6、R7、R10、R11、m6、m7及びnは、それぞれ、前記式(1b)において定義したとおりであり、
R8及びR9は、各々独立して、炭素数1~10の直鎖状、分岐状若しくは環状のアルキル基、炭素数6~10のアリール基、炭素数2~10のアルケニル基、炭素数2~10のアルキニル基、チオール基又は水酸基であり、
m8及びm9は、各々独立して、0~4の整数であり、
R12及びR13は、水素原子である。)
[6]
[1]~[5]のいずれかの化合物に由来する構成単位を有する樹脂。
[7]
下記式(2)で表される構造を有する、[6]の樹脂。
A、R1~R5、m2~m5、n、及びp2~p5は、それぞれ、前記式(1)において定義したとおりであり、
Lは、単結合又は連結基である。)
[8]
[1]~[5]のいずれかの化合物及び[6]又は[7]の樹脂からなる群より選ばれる1種以上を含有する組成物。
[9]
溶媒をさらに含有する、[8]の組成物。
[10]
酸発生剤をさらに含有する、[8]又は[9]の組成物。
[11]
架橋剤をさらに含有する、[8]~[10]のいずれかの組成物。
[12]
リソグラフィー用膜形成に用いられる、[8]~[11]のいずれかの組成物。
[13]
光学部品形成に用いられる、[8]~[11]のいずれかの組成物。
[14]
基板上に、[12]の組成物を用いてフォトレジスト層を形成するフォトレジスト層形成工程と、
該フォトレジスト層形成工程により形成したフォトレジスト層の所定の領域に放射線を照射し、現像を行う現像工程とを含む、レジストパターン形成方法。
[15]
レジストパターンが絶縁膜パターンである、[14]のレジストパターン形成方法。
[16]
基板上に、[12]の組成物を用いて下層膜を形成する下層膜形成工程と、
該下層膜形成工程により形成した下層膜上に、少なくとも1層のフォトレジスト層を形成するフォトレジスト層形成工程と、
該フォトレジスト層形成工程により形成したフォトレジスト層の所定の領域に放射線を照射し、現像を行う工程と、
を含む、レジストパターン形成方法。
[17]
基板上に、[12]の組成物を用いて下層膜を形成する下層膜形成工程と、
該下層膜形成工程により形成した下層膜上に、中間層膜を形成する中間層膜形成工程と、
該中間層膜形成工程により形成した中間層膜上に、少なくとも1層のフォトレジスト層を形成するフォトレジスト層形成工程と、
該フォトレジスト層形成工程により形成したフォトレジスト層の所定の領域に放射線を照射し、現像してレジストパターンを形成するレジストパターン形成工程と、
該レジストパターン形成工程により形成したレジストパターンをマスクとして前記中間層膜をエッチングして中間層膜パターンを形成する中間層膜パターン形成工程と、
該中間層膜パターン形成工程により形成した中間層膜パターンをマスクとして前記下層膜をエッチングして下層膜パターンを形成する下層膜パターン形成工程と、
該下層膜パターン形成工程により形成した下層膜パターンをマスクとして前記基板をエッチングして基板にパターンを形成する基板パターン形成工程と、
を含む、回路パターン形成方法。
[18]
[1]~[5]のいずれかの化合物又は[6]若しくは[7]の樹脂の精製方法であって、
前記化合物又は樹脂、及び水と任意に混和しない有機溶媒を含む溶液と、酸性の水溶液とを接触させて抽出する抽出工程を含む、化合物又は樹脂の精製方法。
本実施形態の化合物は、下記式(1)で表される化合物である。本実施形態の化合物は、例えば、下記(1)~(4)の特性を有する。
(1)本実施形態の化合物は、有機溶媒(特に安全溶媒)に対する優れた溶解性を有する。このため、例えば、本実施形態の化合物をリソグラフィー用膜形成材料として用いると、スピンコート法やスクリーン印刷等の湿式プロセスによりリソグラフィー用膜を形成できる。
(2)本実施形態の化合物では、炭素濃度が比較的高く、酸素濃度が比較的低い。また、本実施形態の化合物は、分子中にフェノール性水酸基及び/又はフェノール性チオール基を有するため、硬化剤との反応による硬化物の形成に有用であるが、単独でも高温ベーク時にフェノール性水酸基及び/又はフェノール性チオール基が架橋反応することにより硬化物を形成できる。これらに起因して、本実施形態の化合物は、高い耐熱性を発現でき、本実施形態の化合物をリソグラフィー用膜形成材料として用いると、高温ベーク時の膜の劣化が抑制され、酸素プラズマエッチング等に対するエッチング耐性に優れたリソグラフィー用膜を形成できる。
(3)本実施形態の化合物は、上記のように、高い耐熱性及びエッチング耐性を発現できるとともに、レジスト層やレジスト中間層膜材料との密着性に優れる。このため、本実施形態の化合物をリソグラフィー用膜形成材料として用いると、レジストパターン形成性に優れたリソグラフィー用膜を形成できる。なお、ここでいう「レジストパターン形成性」とは、レジストパターン形状に大きな欠陥が見られず、解像性及び感度ともに優れる性質をいう。
(4)本実施形態の化合物は、芳香環密度が高いため高屈折率であり、加熱処理しても着色が抑制され、透明性に優れる。
またAは、溶解性の観点から、ハロゲンを有することが好ましく、ヘキサフルオロプロピレン基がより好ましい。
炭素数1~10の1価の基R1aとしては、例えば、直鎖状、分岐状若しくは環状のアルキル基、アリール基等が挙げられ、具体的には、メチル基、エチル基、n-プロピル基、i-プロピル基、n-ブチル基、i-ブチル基、t-ブチル基、n-ペンチル基、ネオペンチル基、シクロペンチル基、n-ヘキシル基、シクロヘキシル基、フェニル基等が挙げられる。
炭素数1~25のn価の基R1bとしては、例えば、n=1である場合、炭素数1~25の1価の炭化水素基(例えば、アルキル基等の直鎖状若しくは分岐状炭化水素基又は環式炭化水素基)、n=2である場合、炭素数1~25の2価の炭化水素基(例えば、アルキレン基等の直鎖状若しくは分岐状炭化水素基又は環式炭化水素基)、n=3である場合、炭素数1~25の3価の炭化水素基(例えば、アルカントリイル基等の直鎖状若しくは分岐状炭化水素基又は環式炭化水素基)、n=4である場合、炭素数1~25の4価の炭化水素基(例えば、アルカンテトライル基等の直鎖状若しくは分岐状炭化水素基又は環式炭化水素基)が挙げられる。ここで、上記環式炭化水素基は、有橋環式炭化水素基及び/又は芳香族基を有してもよい。基R1bは、二重結合を有していてもよく、ヘテロ原子を有していてもよい。
本実施形態の樹脂は、上記式(1)で表される化合物に由来する構成単位を有する。すなわち、本実施形態の樹脂は、上記式(1)で表される化合物をモノマー成分として含む。本実施形態の樹脂の具体例として、式(2)で表される構造を有する樹脂が挙げられる。
本実施形態の組成物は、式(1)で表される化合物又は式(1)で表される化合物に由来する構成単位を有する樹脂を含有する。
本実施形態におけるリソグラフィー用膜形成組成物は、溶媒を含有してもよい。溶媒としては、本実施形態の化合物又は樹脂を溶解可能な溶媒であれば特に限定されない。ここで、本実施形態の化合物又は樹脂は、上述した通り、有機溶媒に対する溶解性に優れるため、種々の有機溶媒が好適に用いられる。
本実施形態のリソグラフィー用膜形成組成物は、インターミキシングを抑制する等の観点から、架橋剤を含有していてもよい。架橋剤としては特に限定されないが、例えば、国際公開第2013/024779号や国際公開第2018/016614号に記載されたものを用いることができる。
本実施形態のリソグラフィー用膜形成組成物は、必要に応じて架橋反応(硬化反応)を促進させるために架橋促進剤を含有してもよい。架橋促進剤としては、ラジカル重合開始剤が挙げられる。
本実施形態のリソグラフィー用膜形成組成物は、熱による架橋反応をさらに促進させる等の観点から、酸発生剤を含有していてもよい。酸発生剤としては、熱分解によって酸を発生するもの、光照射によって酸を発生するものなどが知られているが、いずれも使用することができる。酸発生剤としては、例えば、国際公開第2013/024779号に記載されたものを用いることができる。
本実施形態のリソグラフィー用膜形成組成物は、保存安定性を向上させる等の観点から、塩基性化合物を含有していてもよい。
本実施形態のリソグラフィー用膜形成組成物は、熱や光による硬化性の付与や吸光度をコントロールする目的で、他の樹脂及び/又は化合物を含有していてもよい。このような他の樹脂及び/又は化合物としては、特に限定されず、例えば、ナフトール樹脂、キシレン樹脂ナフトール変性樹脂、ナフタレン樹脂のフェノール変性樹脂;ポリヒドロキシスチレン、ジシクロペンタジエン樹脂、(メタ)アクリレート、ジメタクリレート、トリメタクリレート、テトラメタクリレート、ビニルナフタレン、ポリアセナフチレン等のナフタレン環、フェナントレンキノン、フルオレン等のビフェニル環、チオフェン、インデン等のヘテロ原子を有する複素環を含む樹脂や芳香族環を含まない樹脂;ロジン系樹脂、シクロデキストリン、アダマンタン(ポリ)オール、トリシクロデカン(ポリ)オール及びそれらの誘導体等の脂環構造を含む樹脂又は化合物等が挙げられる。本実施形態のリソグラフィー用膜形成組成物は、公知の添加剤を含有していてもよい。公知の添加剤としては、以下に限定されないが、例えば、熱及び/又は光硬化触媒、重合禁止剤、難燃剤、充填剤、カップリング剤、熱硬化性樹脂、光硬化性樹脂、染料、顔料、増粘剤、滑剤、消泡剤、レベリング剤、紫外線吸収剤、界面活性剤、着色剤、ノニオン系界面活性剤等が挙げられる。
本実施形態におけるリソグラフィー用下層膜は、本実施形態のリソグラフィー用膜形成組成物から形成される。
本実施形態のレジストパターン形成方法は、基板上に、本実施形態の組成物を用いて下層膜を形成する下層膜形成工程と、下層膜形成工程により形成した下層膜上に、少なくとも1層のフォトレジスト層を形成するフォトレジスト層形成工程と、フォトレジスト層形成工程により形成したフォトレジスト層の所定の領域に放射線を照射し、現像を行う工程を含む。本実施形態のレジストパターン形成方法は、各種パターンの形成に用いることができ、絶縁膜パターンの形成方法であることが好ましい。
本実施形態の回路パターン形成方法は、基板上に、本実施形態の組成物を用いて下層膜を形成する下層膜形成工程と、下層膜形成工程により形成した下層膜上に、中間層膜を形成する中間層膜形成工程と、中間層膜形成工程により形成した中間層膜上に、少なくとも1層のフォトレジスト層を形成するフォトレジスト層形成工程と、フォトレジスト層形成工程により形成したフォトレジスト層の所定の領域に放射線を照射し、現像してレジストパターンを形成するレジストパターン形成工程と、レジストパターン形成工程により形成したレジストパターンをマスクとして中間層膜をエッチングして中間層膜パターンを形成する中間層膜パターン形成工程と、中間層膜パターン形成工程により形成した中間層膜パターンをマスクとして下層膜をエッチングして下層膜パターンを形成する下層膜パターン形成工程と、下層膜パターン形成工程により形成した下層膜パターンをマスクとして前記基板をエッチングして基板にパターンを形成する基板パターン形成工程とを含む。
本実施形態のレジスト永久膜は、本実施形態の組成物を含む。本実施形態の組成物を塗布してなるレジスト永久膜は、必要に応じてレジストパターンを形成した後、最終製品にも残存する永久膜として好適である。永久膜の具体例としては、半導体デバイス関係では、ソルダーレジスト、パッケージ材、アンダーフィル材、回路素子等のパッケージ接着層や集積回路素子と回路基板の接着層、薄型ディスプレー関連では、薄膜トランジスタ保護膜、液晶カラーフィルター保護膜、ブラックマトリクス、スペーサーなどが挙げられる。特に、本実施形態の組成物を含むレジスト永久膜は、耐熱性や耐湿性に優れている上に昇華成分による汚染性が少ないという非常に優れた利点も有する。特に表示材料において、重要な汚染による画質劣化の少ない高感度、高耐熱、吸湿信頼性を兼ね備えた材料となる。
本実施形態の化合物又は樹脂の精製方法は、本実施形態の化合物又は樹脂及び水と任意に混和しない有機溶媒を含む溶液と、酸性の水溶液とを接触させて抽出する抽出工程を含む。より詳細には、本実施形態の精製方法は、本実施形態の化合物又は樹脂を水と任意に混和しない有機溶媒に溶解させ、その溶液を酸性水溶液と接触させ抽出処理を行うことにより、本実施形態の化合物又は樹脂と有機溶媒を含む溶液(A)に含まれる金属分を水相に移行させたのち、有機相と水相を分離して精製する。本実施形態の精製方法により、本実施形態の化合物又は樹脂中の種々の金属の含有量を著しく低減させることができる。
有機元素分析により、ヤナコ分析工業(株)製品の「CHNコーダーMT-6」を用いて化合物又は樹脂の炭素濃度及び酸素濃度(質量%)を測定した。
LC-MS分析により、Water社製品の「Acquity UPLC/MALDI-Synapt HDMS」を用いて化合物又は樹脂の分子量を測定した。
23℃にて、化合物又は樹脂をプロピレングリコールモノメチルエーテル(PGME)に対して5質量%溶液になるよう溶解させた。その後、5℃にて30日間静置したときの溶解性を以下の基準にて評価した。
評価A:目視にて析出物なしを確認
評価C:目視にて析出物ありを確認
攪拌機、冷却管及びビュレットを備えた内容積1000mLの容器において2,2-ビス(4-ヒドロキシフェニル)プロパン(シグマ-アルドリッチ社製試薬)100g、硫酸3g、4-ビフェニルアルデヒド(三菱瓦斯化学社製品)27g、1-メトキシ-2-プロパノール415gを加えて、内容物を90℃で6時間撹拌して反応を行って反応液を得た。反応液を冷却・濃縮し、o-キシレン369g、酢酸ブチル123gを加え、炭酸ナトリウム水や純水にて洗浄し、その後、水酸化ナトリウム水を加えて、その水層を回収、酢酸エチル溶媒にて抽出、濃縮し、カラムクロマトによる分離後、下記式(BiP-1)で表される目的化合物(BiP-1)を20.0g得た。
得られた化合物(BiP-1)について、上記の方法により分子量を測定した結果、620であった。また、得られた化合物(BiP-1)の炭素濃度は83.2質量%であり、酸素濃度は10.3質量%であった。
得られた化合物(BiP-1)について、1H-NMR(500MHz、DMSO-d6)測定を行ったところ、以下のピークが見出され、下記式(BiP-1)の化学構造を有することを確認した。
δ(ppm):9.06~9.12(4H,O-H)、6.59~7.64(23H,Ph-H)、6.08(1H,C-H)、1.37~1.39(12H,-C(CH3)2)
2,2-ビス(4-ヒドロキシフェニル)プロパンに代えて、2,2-ビス(4-ヒドロキシフェニル)ヘキサフルオロプロパンを用いた以外は合成実施例1と同様に反応させ、下記式(BiP-2)で表される目的化合物(BiP-2)を15g得た。
得られた化合物(BiP-2)について、上記方法により分子量を測定した結果、836であった。また、得られた化合物(BiP-2)の炭素濃度は61.7質量%であり、酸素濃度は7.7質量%であった。
得られた化合物(BiP-2)について、1H-NMR(500MHz、DMSO-d6)測定を行ったところ、以下のピークが見出され、下記式(BiP-2)の化学構造を有することを確認した。
δ(ppm):9.20~9.24(4H,O-H)、6.68~7.54(23H,Ph-H)、6.02(1H,C-H)
2,2-ビス(4-ヒドロキシフェニル)プロパンに代えて、2,2-ビス(4-ヒドロキシ-3-メチルフェニル)プロパンを用いた以外は合成実施例1と同様に反応させ、下記式(BiP-3)で表される目的化合物(BiP-3)を15g得た。
得られた化合物(BiP-3)について、上記方法により分子量を測定した結果、676であった。また、得られた化合物(BiP-3)の炭素濃度は83.4質量%であり、酸素濃度は95.0質量%であった。
得られた化合物(BiP-3)について、1H-NMR(500MHz、DMSO-d6)測定を行ったところ、以下のピークが見出され、下記式(BiP-3)の化学構造を有することを確認した。
δ(ppm):9.00~9.05(4H,O-H)、6.44~7.55(19H,Ph-H)、6.12(1H,C-H)、1.96~2.02(12H,-CH3)1.29~1.37(12H,-C(CH3)2)
2,2-ビス(4-ヒドロキシフェニル)プロパンに代えて、2,3,4,4’-テトラヒドロキシベンゾフェノンを用いた以外は合成実施例1と同様に反応させ、下記式(BiP-4)で表される目的化合物(BiP-4)を18g得た。
得られた化合物(BiP-4)について、上記方法により分子量を測定した結果、656であった。また、得られた化合物(BiP-4)の炭素濃度は71.3質量%であり、酸素濃度は24.4質量%であった。
得られた化合物(BiP-4)について、1H-NMR(500MHz、DMSO-d6)測定を行ったところ、以下のピークが見出され、下記式(BiP-4)の化学構造を有することを確認した。
δ(ppm):9.07,9.80,10.18,12.47(8H,O-H)、6.54~7.59(19H,Ph-H)、5.89(1H,C-H)
攪拌機、冷却管及びビュレットを備えた内容積1000mLの容器において2,2-ビス(4-ヒドロキシフェニル)プロパン(シグマ-アルドリッチ社製試薬)100g、硫酸3g、4-ビフェニルアルデヒド(三菱瓦斯化学社製品)27g、1-メトキシ-2-プロパノール415gを加えて、内容物を90℃で6時間撹拌して反応を行って反応液を得た。反応液を冷却・濃縮し、o-キシレン369g、酢酸ブチル123gを加え、炭酸ナトリウム水や純水にて洗浄し、その後、水酸化ナトリウム水を加えて、その水層を回収、酢酸エチル溶媒にて抽出、濃縮し、ヘプタン1000gを追加して固形物を析出、分離後、下記式(RBiP-1)で表される目的樹脂(RBiP-1)を98.0g得た。
2,2-ビス(4-ヒドロキシフェニル)プロパンに代えて、2,2-ビス(4-ヒドロキシフェニル)ヘキサフルオロプロパンを用いた以外は合成実施例5と同様に反応させ、下記式(RBiP-2)で表される目的樹脂(RBiP-2)を8.0g得た。
2,2-ビス(4-ヒドロキシフェニル)プロパンに代えて、2,2-ビス(4-ヒドロキシ-3-メチルフェニル)プロパンを用いた以外は合成実施例5と同様に反応させ、下記式(RBiP-3)で表される目的樹脂(RBiP-3)を8.9g得た。
2,2-ビス(4-ヒドロキシフェニル)プロパンに代えて、2,3,4,4’-テトラヒドロキシベンゾフェノンを用いた以外は合成実施例5と同様に反応させ、下記式(RBiP-4)で表される目的樹脂(RBiP-4)を7.0g得た。
4-ビフェニルアルデヒドに代えて、2-ナフトアルデヒドを用いた以外は合成実施例1と同様に反応させ、下記式(BiP-5)で表される目的化合物(BiP-5)を1.6g得た。
得られた化合物(BiP-5)について、上記方法により分子量を測定した結果、542であった。また、得られた化合物(BiP-5)の炭素濃度は77.5質量%であり、酸素濃度は17.7質量%であった。
得られた化合物(BiP-5)について、1H-NMR(500MHz、DMSO-d6)測定を行ったところ、以下のピークが見出され、下記式(BiP-5)の化学構造を有することを確認した。
δ(ppm):9.18(4H,O-H)、6.45~7.69(21H,Ph-H)、6.08(1H,C-H)、1.30~1.36(12H,-C(CH3)2)
4-ビフェニルアルデヒドに代えて、2-ナフトアルデヒドを用いた以外は合成実施例5と同様に反応させ、下記式(RBiP-5)で表される目的樹脂(RBiP-5)を11.0g得た。
4-ビフェニルアルデヒドに代えて、2,2’-ジメチルプロパナールを用いた以外は合成実施例1と同様に反応させ、下記式(BiP-6)で表される目的化合物(BiP-6)を0.5g得た。
得られた化合物(BiP-6)について、上記方法により分子量を測定した結果、472であった。また、得られた化合物(BiP-6)の炭素濃度は73.7質量%であり、酸素濃度は20.3質量%であった。
得られた化合物(BiP-6)について、1H-NMR(500MHz、DMSO-d6)測定を行ったところ、以下のピークが見出され、下記式(BiP-6)の化学構造を有することを確認した。
δ(ppm):9.04(4H,O-H)、6.45~7.69(21H,Ph-H)、5.98(1H,C-H)、1.73~1.88(9H,-C(CH3))、1.32~1.38(12H,-C(CH3)2)
4-ビフェニルアルデヒドに代えて、2,2’-ジメチルプロパナールを用いた以外は合成実施例5と同様に反応させ、下記式(RBiP-6)で表される目的樹脂(RBiP-6)を5.5g得た。
ジムロート冷却管、温度計及び攪拌翼を備え、底抜きが可能な内容積10Lの四つ口フラスコを準備した。この四つ口フラスコに、窒素気流中、1,5-ジメチルナフタレン1.09kg(7mol、三菱ガス化学(株)製)、40質量%ホルマリン水溶液2.1kg(ホルムアルデヒドとして28mol、三菱ガス化学(株)製)及び98質量%硫酸(関東化学(株)製)0.97mLを仕込み、常圧下、100℃で還流させながら7時間反応させた。その後、希釈溶媒としてエチルベンゼン(和光純薬工業(株)製試薬特級)1.8kgを反応液に加え、静置後、下相の水相を除去した。さらに、中和及び水洗を行い、エチルベンゼン及び未反応の1,5-ジメチルナフタレンを減圧下で留去することにより、淡褐色固体のジメチルナフタレンホルムアルデヒド樹脂1.25kgを得た。得られたジメチルナフタレンホルムアルデヒド樹脂の分子量は、数平均分子量(Mn):562、重量平均分子量(Mw):1168、分散度(Mw/Mn):2.08であった。
得られた樹脂(CR-1)は、Mn:885、Mw:2220、Mw/Mn:2.51であった。また、得られた樹脂(CR-1)の炭素濃度は89.1質量%、酸素濃度は4.5質量%であった。なお、ジメチルナフタレンホルムアルデヒド樹脂及び樹脂(CR-1)のMn、Mw及びMw/Mnは、ゲル浸透クロマトグラフィー(GPC)分析により、以下の測定条件にてポリスチレン換算にて求めた。
装置:Shodex GPC-101型(昭和電工株式会社製品)
カラム:KF-80M×3
溶離液:THF 1mL/min
温度:40℃
上記のBiP-1~BiP-6、RBiP-1~RBiP-6及びCR-1につき、溶解度試験を行った。結果を表1に示す。また、表1に示す組成のリソグラフィー用下層膜形成材料(リソグラフィー用下層膜形成組成物)を各々調製した。次に、これらのリソグラフィー用下層膜形成材料をシリコン基板上に回転塗布し、その後、240℃で60秒間、さらに400℃で120秒間ベークして、膜厚200nmの下層膜を各々作製した。酸発生剤、架橋剤及び有機溶媒については以下のものを用いた。
酸発生剤:みどり化学株式会社製品「ジターシャリーブチルジフェニルヨードニウムノナフルオロメタンスルホナート」(表中、「DTDPI」と記載。)
架橋剤:三和ケミカル株式会社製品「ニカラックMX270」(表中、「ニカラック」と記載。)
有機溶媒:プロピレングリコールモノメチルエーテルアセテート(表中、「PGMEA」と記載。)
エッチング装置:サムコインターナショナル社製品「RIE-10NR」
出力:50W
圧力:20Pa
時間:2min
エッチングガス
Arガス流量:CF4ガス流量:O2ガス流量=50:5:5(sccm)
[エッチング耐性の評価]
エッチング耐性の評価は、以下の手順で行った。
まず、実施例1において用いる化合物(BiP-1)に代えてフェノールノボラック樹脂(群栄化学社製 PSM4357)を用いた以外は、実施例1と同様の条件で、フェノールノボラック樹脂を含む下層膜を作製した。そして、このフェノールノボラック樹脂を含む下層膜について上記エッチング試験を行い、そのときのエッチングレート(エッチング速度)を測定した。次に、各実施例及び比較例の下層膜について上記エッチング試験を行い、そのときのエッチングレートを測定した。そして、フェノールノボラック樹脂を含む下層膜のエッチングレートを基準として、以下の評価基準で各実施例及び比較例のエッチング耐性を評価した。
[評価基準]
A:ノボラックの下層膜に比べてエッチングレートが、-10%未満
B:ノボラックの下層膜に比べてエッチングレートが、-10%~+5%
C:ノボラックの下層膜に比べてエッチングレートが、+5%超
上記の各実施例1~14で調製したリソグラフィー用下層膜形成材料の各溶液を膜厚300nmのSiO2基板上に塗布して、240℃で60秒間、さらに400℃で120秒間ベークすることにより、膜厚70nmの下層膜を形成した。この下層膜上に、ArF用レジスト溶液を塗布し、130℃で60秒間ベークすることにより、膜厚140nmのフォトレジスト層を形成した。なお、ArFレジスト溶液としては、下記式(11)で表される化合物:5質量部、トリフェニルスルホニウムノナフルオロメタンスルホナート:1質量部、トリブチルアミン:2質量部、及びPGMEA:92質量部を配合して調製したものを用いた。下記式(11)で表される化合物は、2-メチル-2-メタクリロイルオキシアダマンタン4.15g、メタクリルロイルオキシ-γ-ブチロラクトン3.00g、3-ヒドロキシ-1-アダマンチルメタクリレート2.08g、アゾビスイソブチロニトリル0.38gを、テトラヒドロフラン80mLに溶解させて反応溶液とした。この反応溶液を、窒素雰囲気下、反応温度を63℃に保持して、22時間重合させた後、反応溶液を400mLのn-ヘキサン中に滴下した。このようにして得られる生成樹脂を凝固精製させ、生成した白色粉末をろ過し、減圧下40℃で一晩乾燥させて得た。
下層膜の形成を行わないこと以外は、実施例15と同様にして、フォトレジスト層をSiO2基板上に直接形成し、ポジ型のレジストパターンを得た。結果を表2に示す。
各実施例1~14のリソグラフィー用下層膜形成材料の溶液を膜厚300nmのSiO2基板上に塗布して、240℃で60秒間、さらに400℃で120秒間ベークすることにより、膜厚80nmの下層膜を形成した。この下層膜上に、珪素含有中間層材料を塗布し、200℃で60秒間ベークすることにより、膜厚35nmの中間層膜を形成した。さらに、この中間層膜上に、上記のArF用レジスト溶液を塗布し、130℃で60秒間ベークすることにより、膜厚150nmのフォトレジスト層を形成した。なお、珪素含有中間層材料としては、特開2007-226170号公報の<合成例1>に記載の珪素原子含有ポリマーを用いた。次いで、電子線描画装置(エリオニクス社製;ELS-7500,50keV)を用いて、フォトレジスト層をマスク露光し、115℃で90秒間ベーク(PEB)し、2.38質量%テトラメチルアンモニウムヒドロキシド(TMAH)水溶液で60秒間現像することにより、55nmL/S(1:1)のポジ型のレジストパターンを得た。その後、サムコインターナショナル社製 RIE-10NRを用いて、得られたレジストパターンをマスクにして珪素含有中間層膜(SOG)のドライエッチング加工を行い、続いて、得られた珪素含有中間層膜パターンをマスクにした下層膜のドライエッチング加工と、得られた下層膜パターンをマスクにしたSiO2膜のドライエッチング加工とを順次行った。
レジストパターンのレジスト中間層膜へのエッチング条件
出力:50W
圧力:20Pa
時間:1min
エッチングガス
Arガス流量:CF4ガス流量:O2ガス流量=50:8:2(sccm)
レジスト中間膜パターンのレジスト下層膜へのエッチング条件
出力:50W
圧力:20Pa
時間:2min
エッチングガス
Arガス流量:CF4ガス流量:O2ガス流量=50:5:5(sccm)
レジスト下層膜パターンのSiO2膜へのエッチング条件
出力:50W
圧力:20Pa
時間:2min
エッチングガス
Arガス流量:C5F12ガス流量:C2F6ガス流量:O2ガス流量
=50:4:3:1(sccm)
上記のようにして得られたパターン断面(すなわち、エッチング後のSiO2膜の形状)を、日立製作所株式会社製品の「電子顕微鏡(S-4800)」を用いて観察した。観察結果を表3に示す。表中、「良好」とは、形成されたパターン断面に大きな欠陥が見られなかったことを示し、「不良」とは、形成されたパターン断面に大きな欠陥が見られたことを示す。
上記の各実施例1~6で調製したリソグラフィー用下層膜形成材料の溶液と同組成の光学部品形成組成物溶液を膜厚300nmのSiO2基板上に塗布して、260℃で300秒間ベークすることにより、膜厚100nmの光学部品形成膜を形成した。次いで、ジェー・エー・ウーラム・ジャパン社製 真空紫外域多入射角分光エリプソメーター(VUV-VASE)を用いて、633nmの波長における屈折率及び透明性試験を行い、以下の基準に従って屈折率及び透明性を評価した。評価結果を表4に示す。
A:屈折率が1.60以上
C:屈折率が1.60未満
A:吸光定数が0.03未満
C:吸光定数が0.03以上
(耐熱性及びレジスト性能)
BiP-1、BiP-2、RBiP-1、RBiP-2、CR-1を用いて、耐熱性試験及びレジスト性能評価を行った結果を表5に示す。
上記で合成した各化合物あるいは樹脂を用いて、表5に示す配合でレジスト組成物を調製した。なお、表5中のレジスト組成物の各成分のうち、酸発生剤(C)、酸拡散制御剤(E)及び溶媒については、以下のものを用いた。
酸発生剤(C)
P-1:トリフェニルベンゼンスルホニウム トリフルオロメタンスルホネート(みどり化学(株))
酸拡散制御剤(E)
Q-1:トリオクチルアミン(東京化成工業(株))
溶媒
S-1:プロピレングリコールモノメチルエーテル(東京化成工業(株))
均一なレジスト組成物を清浄なシリコンウェハー上に回転塗布した後、110℃のオーブン中で露光前ベーク(PB)して、厚さ60nmのレジスト膜を形成した。得られたレジスト膜に対して、電子線描画装置(ELS-7500、(株)エリオニクス社製)を用いて、50nm間隔の1:1のラインアンドスペース設定の電子線を照射した。当該照射後に、レジスト膜を、それぞれ所定の温度で、90秒間加熱し、TMAH2.38質量%アルカリ現像液に60秒間浸漬して現像を行った。その後、レジスト膜を、超純水で30秒間洗浄、乾燥して、ポジ型のレジストパターンを形成した。形成されたレジストパターンについて、ラインアンドスペースを走査型電子顕微鏡((株)日立ハイテクノロジー製S-4800)により観察し、レジスト組成物の電子線照射による反応性を評価した。
表中、「良好」とは、レジストパターン形状が矩形を形成し、欠陥が見られないことを示し、「不良」とは、パターンが矩形を形成しないか、欠陥が見られたことを示す。
(感放射線性組成物の調製)
表6記載の成分を調合し、均一溶液としたのち、得られた均一溶液を、孔径0.1μmのテフロン(登録商標)製メンブランフィルターで濾過して、感放射線性組成物を調製した。調製した各々の感放射線性組成物について以下の評価を行った。
PHS-1:ポリヒドロキシスチレン Mw=8000(シグマ-アルドリッチ社)
光活性化合物(B)としては、以下のものを用いた。
B-1:下記化学構造式(G)のナフトキノンジアジド系感光剤(4NT-300、東洋合成工業(株))
S-1:プロピレングリコールモノメチルエーテル(東京化成工業(株))
上記で得られた感放射線性組成物を清浄なシリコンウェハー上に回転塗布した後、110℃のオーブン中で露光前ベーク(PB)して、厚さ200nmのレジスト膜を形成した。該レジスト膜に対して、紫外線露光装置(ミカサ製マスクアライナMA-10)を用いて紫外線を露光した。紫外線ランプは超高圧水銀ランプ(相対強度比はg線:h線:i線:j線=100:80:90:60)を使用した。照射後に、レジスト膜を、110℃で90秒間加熱し、TMAH2.38質量%アルカリ現像液に60秒間浸漬して現像を行った。その後、レジスト膜を、超純水で30秒間洗浄し、乾燥して、5μmのポジ型のレジストパターンを形成した。
1000mL容量の四つ口フラスコ(底抜き型)に、合成実施例1で得られたBiP‐1をPGMEAに溶解させた溶液(10質量%)を150g仕込み、攪拌しながら80℃まで加熱した。次いで、蓚酸水溶液(pH1.3)37.5gを加え、5分間攪拌後、30分静置した。これにより油相と水相に分離したので、水相を除去した。この操作を1回繰り返した後、得られた油相に、超純水37.5gを仕込み、5分間攪拌後、30分静置し、水相を除去した。この操作を3回繰り返した後、80℃に加熱しながらフラスコ内を200hPa以下に減圧することで、残留水分及びPGMEAを濃縮留去した。その後、ELグレードのPGMEA(関東化学社製試薬)で希釈し、10質量%に濃度調整を行うことにより、金属含有量の低減されたBiP‐1のPGMEA溶液を得た。
蓚酸水溶液の代わりに、超純水を用いる以外は実施例57と同様に実施し、10質量%に濃度調整を行うことにより、BiP‐1のPGMEA溶液を得た。
Claims (18)
- 下記式(1)で表される化合物。
(式(1)中、
Aは、炭素数1~12の基であり、
R1は、炭素数1~30の2n価の基であり、
R2~R5は、各々独立して、炭素数1~10の直鎖状、分岐状若しくは環状のアルキル基、炭素数1~10のアルコキシ基、炭素数6~10のアリール基、炭素数2~10のアルケニル基、炭素数2~10のアルキニル基、チオール基又は水酸基であり、
R4の少なくとも1つ及び/又はR5の少なくとも1つは、水酸基及び/又はチオール基であり、
m2及びm3は、各々独立して0~8の整数であり、
m4及びm5は、各々独立して0~9の整数であり、
nは、1~4の整数であり、
p2~p5は、各々独立して0~2の整数である。) - 前記式(1)中、R2の少なくとも1つ及び/又はR3の少なくとも1つが、水酸基及び/又はチオール基である、請求項1に記載の化合物。
- 請求項1~5のいずれかに記載の化合物に由来する構成単位を有する樹脂。
- 請求項1~5のいずれか一項に記載の化合物及び請求項6又は7に記載の樹脂からなる群より選ばれる1種以上を含有する組成物。
- 溶媒をさらに含有する、請求項8に記載の組成物。
- 酸発生剤をさらに含有する、請求項8又は9に記載の組成物。
- 架橋剤をさらに含有する、請求項8~10のいずれか一項に記載の組成物。
- リソグラフィー用膜形成に用いられる、請求項8~11のいずれか一項に記載の組成物。
- 光学部品形成に用いられる、請求項8~11のいずれか一項に記載の組成物。
- 基板上に、請求項12に記載の組成物を用いてフォトレジスト層を形成するフォトレジスト層形成工程と、
該フォトレジスト層形成工程により形成したフォトレジスト層の所定の領域に放射線を照射し、現像を行う現像工程と、
を含む、レジストパターン形成方法。 - レジストパターンが絶縁膜パターンである、請求項14記載のレジストパターン形成方法。
- 基板上に、請求項12に記載の組成物を用いて下層膜を形成する下層膜形成工程と、
該下層膜形成工程により形成した下層膜上に、少なくとも1層のフォトレジスト層を形成するフォトレジスト層形成工程と、
該フォトレジスト層形成工程により形成したフォトレジスト層の所定の領域に放射線を照射し、現像を行う工程と、
を含む、レジストパターン形成方法。 - 基板上に、請求項12に記載の組成物を用いて下層膜を形成する下層膜形成工程と、
該下層膜形成工程により形成した下層膜上に、中間層膜を形成する中間層膜形成工程と、
該中間層膜形成工程により形成した中間層膜上に、少なくとも1層のフォトレジスト層を形成するフォトレジスト層形成工程と、
該フォトレジスト層形成工程により形成したフォトレジスト層の所定の領域に放射線を照射し、現像してレジストパターンを形成するレジストパターン形成工程と、
該レジストパターン形成工程により形成したレジストパターンをマスクとして前記中間層膜をエッチングして中間層膜パターンを形成する中間層膜パターン形成工程と、
該中間層膜パターン形成工程により形成した中間層膜パターンをマスクとして前記下層膜をエッチングして下層膜パターンを形成する下層膜パターン形成工程と、
該下層膜パターン形成工程により形成した下層膜パターンをマスクとして前記基板をエッチングして基板にパターンを形成する基板パターン形成工程と、
を含む、回路パターン形成方法。 - 請求項1~5のいずれか一項に記載の化合物又は請求項6若しくは7に記載の樹脂の精製方法であって、
前記化合物又は樹脂、及び水と任意に混和しない有機溶媒を含む溶液と、酸性の水溶液とを接触させて抽出する抽出工程を含む、化合物又は樹脂の精製方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/044,772 US11747728B2 (en) | 2018-05-28 | 2019-05-27 | Compound, resin, composition, resist pattern formation method, circuit pattern formation method and method for purifying resin |
| CN201980035577.7A CN112218844B (zh) | 2018-05-28 | 2019-05-27 | 化合物、树脂、组合物、抗蚀图案形成方法、电路图案形成方法和树脂的纯化方法 |
| JP2020522176A JP7459789B2 (ja) | 2018-05-28 | 2019-05-27 | 化合物、樹脂、組成物、レジストパターン形成方法、回路パターン形成方法及び樹脂の精製方法 |
| KR1020207032538A KR20210014101A (ko) | 2018-05-28 | 2019-05-27 | 화합물, 수지, 조성물, 레지스트패턴 형성방법, 회로패턴 형성방법 및 수지의 정제방법 |
| EP19811166.8A EP3805191A4 (en) | 2018-05-28 | 2019-05-27 | COMPOUND, RESIN, COMPOSITION, RESIST PATTERN FORMATION PROCESS, CIRCUIT PATTERN FORMATION PROCESS, AND RESIN CLEANING PROCESS |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-101599 | 2018-05-28 | ||
| JP2018101599 | 2018-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019230639A1 true WO2019230639A1 (ja) | 2019-12-05 |
Family
ID=68698162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/020864 Ceased WO2019230639A1 (ja) | 2018-05-28 | 2019-05-27 | 化合物、樹脂、組成物、レジストパターン形成方法、回路パターン形成方法及び樹脂の精製方法 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11747728B2 (ja) |
| EP (1) | EP3805191A4 (ja) |
| JP (1) | JP7459789B2 (ja) |
| KR (1) | KR20210014101A (ja) |
| CN (1) | CN112218844B (ja) |
| TW (1) | TWI843730B (ja) |
| WO (1) | WO2019230639A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2021157678A1 (ja) * | 2020-02-07 | 2021-08-12 | ||
| US20210403786A1 (en) * | 2019-03-28 | 2021-12-30 | Fujifilm Corporation | Composition and thermally conductive material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220161272A (ko) * | 2020-03-31 | 2022-12-06 | 닛산 가가쿠 가부시키가이샤 | 가교제의 변성이 억제된 레지스트 하층막 형성 조성물 |
Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2625568A (en) * | 1951-03-27 | 1953-01-13 | Standard Oil Dev Co | Ketone condensation products of bisphenyl type compounds |
| JPH03232836A (ja) * | 1989-12-06 | 1991-10-16 | Teijin Ltd | ヒドロキシカルボン酸誘導体の製造方法 |
| JPH06107768A (ja) * | 1992-09-28 | 1994-04-19 | Sumitomo Bakelite Co Ltd | エポキシ樹脂組成物 |
| JPH06136091A (ja) * | 1992-10-26 | 1994-05-17 | Sumitomo Bakelite Co Ltd | エポキシ樹脂組成物 |
| JPH08127552A (ja) * | 1994-10-28 | 1996-05-21 | Honshu Chem Ind Co Ltd | 新規ポリフェノール及びその製造方法 |
| JPH09110761A (ja) * | 1995-10-18 | 1997-04-28 | Sumitomo Chem Co Ltd | テトラフェノール系化合物の製造方法 |
| JPH09218512A (ja) * | 1996-02-13 | 1997-08-19 | Japan Synthetic Rubber Co Ltd | 感放射線性樹脂組成物 |
| JPH09218511A (ja) * | 1996-02-08 | 1997-08-19 | Japan Synthetic Rubber Co Ltd | 感放射線性樹脂組成物 |
| JP2002334869A (ja) | 2001-02-07 | 2002-11-22 | Tokyo Electron Ltd | シリコン窒化膜の形成方法、形成装置及びこの形成装置の洗浄前処理方法 |
| JP2004177668A (ja) | 2002-11-27 | 2004-06-24 | Tokyo Ohka Kogyo Co Ltd | 多層レジストプロセス用下層膜形成材料およびこれを用いた配線形成方法 |
| WO2004066377A1 (ja) | 2003-01-24 | 2004-08-05 | Tokyo Electron Limited | 被処理基板上にシリコン窒化膜を形成するcvd方法 |
| JP2004271838A (ja) | 2003-03-07 | 2004-09-30 | Shin Etsu Chem Co Ltd | レジスト下層膜材料ならびにパターン形成方法 |
| JP2005250434A (ja) | 2004-02-04 | 2005-09-15 | Shin Etsu Chem Co Ltd | レジスト下層膜材料ならびにパターン形成方法 |
| JP2005326838A (ja) | 2004-04-15 | 2005-11-24 | Mitsubishi Gas Chem Co Inc | レジスト組成物 |
| JP2007226170A (ja) | 2006-01-27 | 2007-09-06 | Shin Etsu Chem Co Ltd | 反射防止膜材料、反射防止膜を有する基板及びパターン形成方法 |
| JP2007226204A (ja) | 2006-01-25 | 2007-09-06 | Shin Etsu Chem Co Ltd | 反射防止膜材料、基板、及びパターン形成方法 |
| JP2008145539A (ja) | 2006-12-06 | 2008-06-26 | Mitsubishi Gas Chem Co Inc | 感放射線性レジスト組成物 |
| JP2008216530A (ja) * | 2007-03-02 | 2008-09-18 | Nissan Chem Ind Ltd | 多核フェノールを含むレジスト下層膜形成組成物 |
| JP2009173623A (ja) | 2007-04-23 | 2009-08-06 | Mitsubishi Gas Chem Co Inc | 感放射線性組成物 |
| JP2009538943A (ja) * | 2006-06-02 | 2009-11-12 | ディーエスエム アイピー アセッツ ビー.ブイ. | ヒドロキシ芳香族樹脂の調製方法、ヒドロキシ芳香族樹脂、およびその変性 |
| JP2010138393A (ja) | 2008-11-13 | 2010-06-24 | Nippon Kayaku Co Ltd | 光学レンズシート用エネルギー線硬化型樹脂組成物及びその硬化物 |
| WO2013024778A1 (ja) | 2011-08-12 | 2013-02-21 | 三菱瓦斯化学株式会社 | レジスト組成物、レジストパターン形成方法、それに用いるポリフェノール化合物及びそれから誘導され得るアルコール化合物 |
| WO2013024779A1 (ja) | 2011-08-12 | 2013-02-21 | 三菱瓦斯化学株式会社 | リソグラフィー用下層膜形成材料、リソグラフィー用下層膜及びパターン形成方法 |
| WO2014185335A1 (ja) * | 2013-05-13 | 2014-11-20 | 日産化学工業株式会社 | ビスフェノールアルデヒドを用いたノボラック樹脂含有レジスト下層膜形成組成物 |
| WO2015080240A1 (ja) | 2013-11-29 | 2015-06-04 | 三菱瓦斯化学株式会社 | 化合物又は樹脂の精製方法 |
| JP2015174877A (ja) | 2014-03-13 | 2015-10-05 | 日産化学工業株式会社 | 特定の硬化促進触媒を含む樹脂組成物 |
| JP2015187668A (ja) * | 2014-03-27 | 2015-10-29 | 住友ベークライト株式会社 | 感光性樹脂組成物、硬化膜、保護膜、絶縁膜および電子装置 |
| WO2015170524A1 (ja) * | 2014-05-09 | 2015-11-12 | 住友ベークライト株式会社 | 感光性樹脂組成物、硬化膜、保護膜、絶縁膜および電子装置 |
| WO2018016614A1 (ja) | 2016-07-21 | 2018-01-25 | 三菱瓦斯化学株式会社 | 化合物、樹脂、組成物及びパターン形成方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE46455C (de) | AMERICAN ELECTRIC ARMS AND AMMUNITION COMPANY in New-York City, 42 Broadway, V. St. A | Gasdichte Patrone mit elektrischer Zündung | ||
| JPH0887110A (ja) | 1994-09-16 | 1996-04-02 | Nippon Zeon Co Ltd | ポジ型レジスト組成物 |
| JP3567020B2 (ja) | 1995-06-21 | 2004-09-15 | 本州化学工業株式会社 | 新規ポリフェノール及びその製造方法 |
| JP2005134434A (ja) | 2003-10-28 | 2005-05-26 | Konica Minolta Medical & Graphic Inc | 熱現像感光材料 |
| WO2015137486A1 (ja) * | 2014-03-13 | 2015-09-17 | 三菱瓦斯化学株式会社 | 化合物、樹脂、リソグラフィー用下層膜形成材料、リソグラフィー用下層膜、パターン形成方法、及び化合物又は樹脂の精製方法 |
| SG11201706304YA (en) * | 2015-02-12 | 2017-09-28 | Mitsubishi Gas Chemical Co | Compound, resin, material for forming underlayer film for lithography, composition for forming underlayer film for lithography, underlayer film for lithography, resist pattern forming method, circuit pattern forming method, and purification method of compound or resin |
-
2019
- 2019-05-27 US US17/044,772 patent/US11747728B2/en active Active
- 2019-05-27 CN CN201980035577.7A patent/CN112218844B/zh active Active
- 2019-05-27 JP JP2020522176A patent/JP7459789B2/ja active Active
- 2019-05-27 WO PCT/JP2019/020864 patent/WO2019230639A1/ja not_active Ceased
- 2019-05-27 KR KR1020207032538A patent/KR20210014101A/ko not_active Ceased
- 2019-05-27 EP EP19811166.8A patent/EP3805191A4/en not_active Withdrawn
- 2019-05-28 TW TW108118341A patent/TWI843730B/zh active
Patent Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2625568A (en) * | 1951-03-27 | 1953-01-13 | Standard Oil Dev Co | Ketone condensation products of bisphenyl type compounds |
| JPH03232836A (ja) * | 1989-12-06 | 1991-10-16 | Teijin Ltd | ヒドロキシカルボン酸誘導体の製造方法 |
| JPH06107768A (ja) * | 1992-09-28 | 1994-04-19 | Sumitomo Bakelite Co Ltd | エポキシ樹脂組成物 |
| JPH06136091A (ja) * | 1992-10-26 | 1994-05-17 | Sumitomo Bakelite Co Ltd | エポキシ樹脂組成物 |
| JPH08127552A (ja) * | 1994-10-28 | 1996-05-21 | Honshu Chem Ind Co Ltd | 新規ポリフェノール及びその製造方法 |
| JPH09110761A (ja) * | 1995-10-18 | 1997-04-28 | Sumitomo Chem Co Ltd | テトラフェノール系化合物の製造方法 |
| JPH09218511A (ja) * | 1996-02-08 | 1997-08-19 | Japan Synthetic Rubber Co Ltd | 感放射線性樹脂組成物 |
| JPH09218512A (ja) * | 1996-02-13 | 1997-08-19 | Japan Synthetic Rubber Co Ltd | 感放射線性樹脂組成物 |
| JP2002334869A (ja) | 2001-02-07 | 2002-11-22 | Tokyo Electron Ltd | シリコン窒化膜の形成方法、形成装置及びこの形成装置の洗浄前処理方法 |
| JP2004177668A (ja) | 2002-11-27 | 2004-06-24 | Tokyo Ohka Kogyo Co Ltd | 多層レジストプロセス用下層膜形成材料およびこれを用いた配線形成方法 |
| WO2004066377A1 (ja) | 2003-01-24 | 2004-08-05 | Tokyo Electron Limited | 被処理基板上にシリコン窒化膜を形成するcvd方法 |
| JP2004271838A (ja) | 2003-03-07 | 2004-09-30 | Shin Etsu Chem Co Ltd | レジスト下層膜材料ならびにパターン形成方法 |
| JP2005250434A (ja) | 2004-02-04 | 2005-09-15 | Shin Etsu Chem Co Ltd | レジスト下層膜材料ならびにパターン形成方法 |
| JP2005326838A (ja) | 2004-04-15 | 2005-11-24 | Mitsubishi Gas Chem Co Inc | レジスト組成物 |
| JP2007226204A (ja) | 2006-01-25 | 2007-09-06 | Shin Etsu Chem Co Ltd | 反射防止膜材料、基板、及びパターン形成方法 |
| JP2007226170A (ja) | 2006-01-27 | 2007-09-06 | Shin Etsu Chem Co Ltd | 反射防止膜材料、反射防止膜を有する基板及びパターン形成方法 |
| JP2009538943A (ja) * | 2006-06-02 | 2009-11-12 | ディーエスエム アイピー アセッツ ビー.ブイ. | ヒドロキシ芳香族樹脂の調製方法、ヒドロキシ芳香族樹脂、およびその変性 |
| JP2008145539A (ja) | 2006-12-06 | 2008-06-26 | Mitsubishi Gas Chem Co Inc | 感放射線性レジスト組成物 |
| JP2008216530A (ja) * | 2007-03-02 | 2008-09-18 | Nissan Chem Ind Ltd | 多核フェノールを含むレジスト下層膜形成組成物 |
| JP2009173623A (ja) | 2007-04-23 | 2009-08-06 | Mitsubishi Gas Chem Co Inc | 感放射線性組成物 |
| JP2010138393A (ja) | 2008-11-13 | 2010-06-24 | Nippon Kayaku Co Ltd | 光学レンズシート用エネルギー線硬化型樹脂組成物及びその硬化物 |
| WO2013024779A1 (ja) | 2011-08-12 | 2013-02-21 | 三菱瓦斯化学株式会社 | リソグラフィー用下層膜形成材料、リソグラフィー用下層膜及びパターン形成方法 |
| WO2013024778A1 (ja) | 2011-08-12 | 2013-02-21 | 三菱瓦斯化学株式会社 | レジスト組成物、レジストパターン形成方法、それに用いるポリフェノール化合物及びそれから誘導され得るアルコール化合物 |
| WO2014185335A1 (ja) * | 2013-05-13 | 2014-11-20 | 日産化学工業株式会社 | ビスフェノールアルデヒドを用いたノボラック樹脂含有レジスト下層膜形成組成物 |
| WO2015080240A1 (ja) | 2013-11-29 | 2015-06-04 | 三菱瓦斯化学株式会社 | 化合物又は樹脂の精製方法 |
| JP2015174877A (ja) | 2014-03-13 | 2015-10-05 | 日産化学工業株式会社 | 特定の硬化促進触媒を含む樹脂組成物 |
| JP2015187668A (ja) * | 2014-03-27 | 2015-10-29 | 住友ベークライト株式会社 | 感光性樹脂組成物、硬化膜、保護膜、絶縁膜および電子装置 |
| WO2015170524A1 (ja) * | 2014-05-09 | 2015-11-12 | 住友ベークライト株式会社 | 感光性樹脂組成物、硬化膜、保護膜、絶縁膜および電子装置 |
| WO2018016614A1 (ja) | 2016-07-21 | 2018-01-25 | 三菱瓦斯化学株式会社 | 化合物、樹脂、組成物及びパターン形成方法 |
Non-Patent Citations (4)
| Title |
|---|
| NEMOTO, T. ET AL.: "Synthesis and properties of a High-Molecular-Weight Organosoluble Bisphenol A novolac", POLYMER JOURNAL, vol. 41, no. 4, 2009, pages 338 - 342, XP055662407, DOI: 10.1295/polymj.PJ2008199 * |
| See also references of EP3805191A4 |
| SHINJI OKAZAKI ET AL.: "New Trends of Photoresists", September 2009, CMC PUBLISHING CO., LTD., pages: 211 - 259 |
| T. NAKAYAMAM. NOMURAK. HAGAM. UEDA, BULL. CHEM. SOC. JPN., vol. 71, 1998, pages 2979 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210403786A1 (en) * | 2019-03-28 | 2021-12-30 | Fujifilm Corporation | Composition and thermally conductive material |
| JPWO2021157678A1 (ja) * | 2020-02-07 | 2021-08-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20210109448A1 (en) | 2021-04-15 |
| EP3805191A4 (en) | 2021-08-11 |
| CN112218844A (zh) | 2021-01-12 |
| CN112218844B (zh) | 2024-04-26 |
| TWI843730B (zh) | 2024-06-01 |
| TW202003429A (zh) | 2020-01-16 |
| US11747728B2 (en) | 2023-09-05 |
| JP7459789B2 (ja) | 2024-04-02 |
| JPWO2019230639A1 (ja) | 2021-07-26 |
| KR20210014101A (ko) | 2021-02-08 |
| EP3805191A1 (en) | 2021-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2022033731A (ja) | 化合物、樹脂、組成物並びにレジストパターン形成方法及び回路パターン形成方法 | |
| JP7069529B2 (ja) | 化合物、樹脂、組成物並びにレジストパターン形成方法及び回路パターン形成方法 | |
| JP7069530B2 (ja) | 化合物、樹脂、組成物及びパターン形成方法 | |
| KR20190034149A (ko) | 화합물, 수지 및 조성물, 그리고 레지스트패턴 형성방법 및 회로패턴 형성방법 | |
| JP2022130463A (ja) | 化合物、樹脂、組成物、並びにレジストパターン形成方法及び回路パターン形成方法 | |
| JP7578908B2 (ja) | 化合物、樹脂、組成物、レジストパターン形成方法、回路パターン形成方法及び樹脂の精製方法 | |
| JP7459789B2 (ja) | 化合物、樹脂、組成物、レジストパターン形成方法、回路パターン形成方法及び樹脂の精製方法 | |
| JP7205715B2 (ja) | 化合物、樹脂、組成物並びにレジストパターン形成方法及び回路パターン形成方法 | |
| JP7061271B2 (ja) | 化合物、樹脂、組成物、並びにレジストパターン形成方法及び回路パターン形成方法 | |
| JP7068661B2 (ja) | 化合物、樹脂、組成物、並びにレジストパターン形成方法及びパターン形成方法 | |
| CN112513737B (zh) | 下层膜形成组合物 | |
| WO2018101377A1 (ja) | 化合物、樹脂、組成物並びにレジストパターン形成方法及び回路パターン形成方法 | |
| JP7445382B2 (ja) | 化合物、樹脂、組成物及びパターン形成方法 | |
| JPWO2019151400A1 (ja) | 化合物、樹脂、組成物、レジストパターン形成方法、回路パターン形成方法及び樹脂の精製方法 | |
| JP7139622B2 (ja) | 化合物、樹脂、組成物及びパターン形成方法 | |
| WO2021039843A1 (ja) | リソグラフィー用膜形成組成物、レジストパターン形成方法、回路パターン形成方法及び精製方法 | |
| WO2022176571A1 (ja) | 樹脂、組成物、レジストパターン形成方法、回路パターン形成方法及び樹脂の精製方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19811166 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020522176 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2019811166 Country of ref document: EP Effective date: 20210111 |
|
| WWR | Wipo information: refused in national office |
Ref document number: 1020207032538 Country of ref document: KR |
|
| WWC | Wipo information: continuation of processing after refusal or withdrawal |
Ref document number: 1020207032538 Country of ref document: KR |