WO2016084694A1 - 樹脂および感光性樹脂組成物 - Google Patents
樹脂および感光性樹脂組成物 Download PDFInfo
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- WO2016084694A1 WO2016084694A1 PCT/JP2015/082523 JP2015082523W WO2016084694A1 WO 2016084694 A1 WO2016084694 A1 WO 2016084694A1 JP 2015082523 W JP2015082523 W JP 2015082523W WO 2016084694 A1 WO2016084694 A1 WO 2016084694A1
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- KLNPWTHGTVSSEU-UHFFFAOYSA-N undecane-1,11-diamine Chemical compound NCCCCCCCCCCCN KLNPWTHGTVSSEU-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000005050 vinyl trichlorosilane Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
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- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/42—Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- 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
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- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
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- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
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- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L24/13—Structure, shape, material or disposition of the bump connectors prior to the connecting process of an individual bump connector
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- H01L24/93—Batch processes
- H01L24/94—Batch processes at wafer-level, i.e. with connecting carried out on a wafer comprising a plurality of undiced individual devices
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- 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
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- G03F7/162—Coating on a rotating support, e.g. using a whirler or a spinner
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- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
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- H01L2224/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L2224/13—Structure, shape, material or disposition of the bump connectors prior to the connecting process of an individual bump connector
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Definitions
- the present invention relates to a resin containing a specific structure. More specifically, the present invention relates to a resin suitable for a surface protective film of a semiconductor element, an interlayer insulating film, an insulating layer of an organic electroluminescent element, and a photosensitive resin composition using the same.
- Polyimide and polybenzoxazole resins have excellent heat resistance, electrical insulation, and mechanical properties, and thus are widely used for surface protection films of semiconductor elements, interlayer insulation films, insulation layers of organic electroluminescence elements, and the like.
- a composition containing a polyamic acid ester containing a phenolic hydroxyl group and an o-quinonediazide compound (Patent Document 1), or a ring soluble soluble in a solvent.
- Patent Document 2 a composition containing a polyimide and a naphthoquinone diazide compound
- Patent Document 3 a composition containing a polybenzoxazole precursor and a naphthoquinone diazide compound
- Patent Documents 4 and 5 In order to improve the solubility and transparency in the developing solution for such demands, the alicyclic structure (Patent Documents 4 and 5) and the phenolic hydroxyl group containing a hexafluoropropyl group or a sulfonyl group of an electron withdrawing group A polyamic acid resin that has been made highly sensitive by using diamine (Patent Documents 6 and 7) has been studied. *
- JP-A-4-204945 JP 2007-183388 A Japanese Patent Laid-Open No. 56-027140 International Publication No. 2000/73853 JP 2010-196041 A JP 2005-352004 A JP 2007-94011 A
- polyamic acid esters and polyimide materials having a large amount of phenolic hydroxyl groups have a problem that heat resistance deteriorates due to the phenolic hydroxyl groups remaining after curing.
- high-temperature heat treatment at 300 ° C. or higher is usually required to thermally dehydrate and cyclize the polybenzoxazole precursor. Therefore, the heat treatment at a low temperature has a problem of poor heat resistance.
- an object of the present invention is to provide a resin having high sensitivity and heat resistance when used in a photosensitive resin composition.
- the present invention is a resin whose main component is a structure represented by the general formula (1) or (2).
- R 1 is a divalent to octavalent organic group having 2 to 30 carbon atoms.
- R 2 includes an organic group having no hydroxyl group and having a sulfonyl group.
- R 3 may be the same or different and represents either a hydrogen atom or an organic group having 1 to 20 carbon atoms.
- n is in the range of 10 to 100,000, m is an integer from 0 to 2, and p is an integer from 0 to 4.
- the present invention is a resin having a structure represented by the following general formula (1) or (2) as a main component, wherein R 2 is an organic group represented by the general formula (3) and the general formula (4). ) Represented by the organic group.
- R 1 is a divalent to octavalent organic group having 2 to 30 carbon atoms
- R 2 includes an organic group represented by the general formula (3) and an organic group represented by the general formula (4).
- R 3 and R 5 may be the same or different and each represents a hydrogen atom or an organic group having 1 to 20 carbon atoms.
- R 4 represents a trivalent to octavalent organic group selected from 2 to 20 carbon atoms (excluding a structure having a sulfonyl group), R 6 does not have a hydroxyl group selected from 2 to 30 carbon atoms, and A divalent to octavalent organic group having an aromatic ring is shown.
- n is in the range of 10 to 100,000
- m 1 and l are integers from 0 to 2
- p is an integer from 0 to 4
- q is an integer from 1 to 4.
- the present invention also relates to (a) a resin having a structure represented by the general formula (1) or (2) as a main component, (b) a photoacid generator, (c) a thermal crosslinking agent, and (d) a solvent.
- a photosensitive resin composition characterized by having positive photosensitivity.
- the present invention is a method for producing a cured pattern film using the photosensitive resin composition of the present invention, wherein the photosensitive resin composition is applied onto a support substrate and dried to obtain a photosensitive resin film.
- a step of exposing the photosensitive resin film obtained in the step, a step of developing the photosensitive resin film that has undergone the exposure step using an alkaline aqueous solution to obtain a pattern resin film, and a pattern resin film obtained in the step The process of manufacturing a pattern cured film including the process of heat-processing.
- this invention is an interlayer insulation film obtained by the manufacturing method of the pattern cured film of this invention.
- this invention is a surface protective film obtained by the manufacturing method of the pattern cured film of this invention.
- the present invention is an electronic component having the interlayer insulating film or surface protective film of the present invention.
- a resin having high sensitivity and heat resistance can be obtained when used in a photosensitive resin composition.
- the resin having the structure represented by the general formula (1) of the present invention as a main component can be a polymer having an imide ring, an oxazole ring, or other cyclic structure by heating or an appropriate catalyst.
- a polyamic acid, polyamic acid ester of a polyimide precursor, a polyhydroxyamide of a polybenzoxazole precursor, and a polyamide copolymer are used.
- the resin whose main component is the structure represented by the general formula (2) of the present invention is a polyimide that is ring-closed by heating or a polyimide precursor that is partially ring-closed by heating and imidized. Or a copolymer of polyimide and polybenzoxazole precursor or polyamide.
- the main component here means that the structure represented by the general formula (1) or (2) is 50 mol% or more of the entire resin.
- R 1 is a divalent to octavalent organic group having 2 to 30 carbon atoms
- R 2 includes an organic group having no hydroxyl group and having a sulfonyl group.
- the present invention is a resin whose main component is a structure represented by the general formula (1) or (2), wherein R 2 is an organic group represented by the general formula (3) and the general formula (4). Contains the organic group represented.
- R 1 is a divalent to octavalent organic group having 2 to 30 carbon atoms, and R 3 and R 5 may be the same or different and each represents a hydrogen atom or an organic group having 1 to 20 carbon atoms. .
- R 4 represents a trivalent to octavalent organic group selected from 2 to 20 carbon atoms (excluding a structure having a sulfonyl group), R 6 does not have a hydroxyl group selected from 2 to 30 carbon atoms, and A divalent to octavalent organic group having an aromatic ring is shown.
- n is in the range of 10 to 100,000
- m 1 and l are integers from 0 to 2
- p is an integer from 0 to 4
- q is an integer from 1 to 4.
- R 2 includes an organic group represented by the general formula (3) and an organic group represented by the general formula (4), and represents a structural component of diamine.
- the organic group represented by the general formula (3) contains a hydroxyl group and a phenolic hydroxyl group.
- a phenolic hydroxyl group When a phenolic hydroxyl group is contained, moderate solubility in an alkali developer is obtained, and it contributes to the interaction with the photosensitive agent. Therefore, it is possible to obtain a resin film capable of improving the remaining film ratio and increasing the sensitivity. Therefore, it is preferable.
- the phenolic hydroxyl group may deteriorate the heat resistance.
- R 2 contains both the organic group represented by the general formula (3) and the organic group represented by the general formula (4), the phenolic hydroxyl group can be reduced as a whole resin.
- the polyimide precursor and polyimide which are resin which has the structure represented by General formula (1) or General formula (2) as a main component are the phenolic hydroxyl group of the organic group represented by General formula (3).
- a sulfonyl group of an organic group represented by the general formula (4) As a result, it becomes possible to improve the heat resistance of the cured film obtained by the resin composition while obtaining high sensitivity of the resin composition.
- a polybenzoxazole precursor that does not have a phenolic hydroxyl group after curing usually requires high-temperature heat treatment at 300 ° C. or higher in order to thermally dehydrate and cyclize it. For this reason, only a heat treatment at a low temperature of 250 ° C. leaves a partially unclosed structure, which is insufficient for the heat resistance of the cured film. Therefore, by copolymerizing with a polyamide that does not contain a phenolic hydroxyl group, the heat resistance can be improved, and the same effect as the high-temperature heat treatment can be obtained.
- the organic group represented by the general formula (4) does not have a phenolic hydroxyl group but has a sulfonyl group and an aromatic ring.
- the organic group represented by the general formula (4) includes a hydrophobic organic group such as a trifluoromethyl group or a free group having a low electron-withdrawing property, the solubility during development deteriorates, and the sensitivity Deterioration and pattern residue occur. Since the sulfonyl group has a high electron-withdrawing property and hydrophilicity, when a phenolic hydroxyl group is contained in the adjacent portion, the acidity is increased and the solubility is remarkably increased, so that the film is eluted during development.
- organic group containing sulfonyl group represented by the general formula (4) preferably comprises an organic group R 6 is represented by the following general formula (5).
- R 7 to R 14 do not have a hydroxyl group and each independently represents a hydrogen atom, a halogen atom or a monovalent organic group having 1 to 30 carbon atoms.
- R 2 represents an organic group represented by the general formula (3) and an organic group represented by the general formula (4).
- the molar ratio of the groups is preferably 9: 1 to 5: 5, more preferably 8: 2 to 5: 5. In the range of this ratio, since the phenolic hydroxyl group and the sulfonyl group of the organic group represented by the general formula (4) can be compatible, the resin composition was obtained while achieving high sensitivity of the resin composition. It becomes possible to improve the heat resistance of the cured film.
- R 4 (COOR 5 ) l (OH) q in the general formula (3) include bis (amino-hydroxy-phenyl) hexafluoropropane, diaminodihydroxypyrimidine, diaminodihydroxypyridine, hydroxy-diamino-pyrimidine, diamino Phenol, dihydroxybenzidine, diaminobenzoic acid, bis (amino-hydroxyphenyl) propane diaminoterephthalate, bis (amino-hydroxyphenyl) methylene, bis (amino-hydroxyphenyl) ether, bis (amino-hydroxy) biphenyl, bis ( Residues of hydroxyl group-containing diamines such as amino-hydroxyphenyl) fluorene, and some of the hydrogen atoms of these aromatic rings are substituted with alkyl groups having 1 to 10 carbon atoms, fluoroalkyl groups and halogen atoms And the structure represented by any one of the general formulas (8) to (10
- R 15 and R 17 in the general formula (8) may be the same or different and represent a trivalent to tetravalent organic group having 2 to 20 carbon atoms, and R 16 represents a divalent organic group having 2 to 30 carbon atoms.
- R 18 and R 20 in the general formula (9) may be the same or different and represent a divalent organic group having 2 to 20 carbon atoms; 19 represents a trivalent to hexavalent organic group having 3 to 20 carbon atoms, w represents an integer of 1 to 4.
- R 21 in the general formula (10) represents a divalent organic group having 2 to 20 carbon atoms.
- R 22 represents a trivalent to hexavalent organic group having 3 to 20 carbon atoms, and x represents an integer of 1 to 4.
- R 2 preferably has two or more organic groups represented by the general formula (3).
- one of them includes a structure represented by any one of the general formulas (8) to (10) because an effect of improving sensitivity can be obtained.
- R 15 and R 17 represent a trivalent to tetravalent organic group having 2 to 20 carbon atoms, and those having an aromatic ring are preferable from the viewpoint of heat resistance of the obtained polymer.
- Examples of —R 15 (OH) u— and —R 17 (OH) v— are specifically hydroxyphenyl, dihydroxyphenyl, hydroxynaphthyl, dihydroxynaphthyl, hydroxybiphenyl, dihydroxybiphenyl, bis (Hydroxyphenyl) hexafluoropropane group, bis (hydroxyphenyl) propane group, bis (hydroxyphenyl) sulfone group, hydroxydiphenyl ether group, dihydroxydiphenyl ether group and the like can be mentioned.
- aliphatic groups such as a hydroxycyclohexyl group and a dihydroxycyclohexyl group can also be used.
- R 16 represents a divalent organic group selected from 2 to 30 carbon atoms. From the viewpoint of the heat resistance of the resulting polymer, an aromatic divalent group is preferred. Examples thereof include a phenyl group, a biphenyl group, a diphenyl ether group, a diphenylhexafluoropropane group, a diphenylpropane group, and the like, but an aliphatic cyclohexyl group can also be used.
- R 18 and R 20 represent a divalent organic group having 2 to 20 carbon atoms.
- a divalent group having an aromatic group is preferred from the heat resistance of the resulting polymer. Examples of such include phenyl group, biphenyl group, diphenyl ether group, diphenylhexafluoropropane group, diphenylpropane group, diphenylsulfone group, etc. In addition to this, an aliphatic cyclohexyl group, etc. should also be used.
- R 19 represents a trivalent to hexavalent organic group having 3 to 20 carbon atoms, and preferably has an aromatic ring from the heat resistance of the resulting polymer.
- —R 19 (OH) w— specifically, a hydroxyphenyl group, a dihydroxyphenyl group, a hydroxynaphthyl group, a dihydroxynaphthyl group, a hydroxybiphenyl group, a dihydroxybiphenyl group, a bis (hydroxyphenyl) hexafluoropropane group, Examples thereof include bis (hydroxyphenyl) propane group, hydroxydiphenyl ether group, and dihydroxydiphenyl ether group.
- aliphatic groups such as a hydroxycyclohexyl group and a dihydroxycyclohexyl group can also be used.
- R 21 represents a divalent organic group having 2 to 20 carbon atoms. From the heat resistance of the polymer obtained, an aromatic divalent group is preferred. Examples of such a group include groups such as a phenyl group, a biphenyl group, a diphenyl ether group, a diphenylhexafluoropropane group, and a diphenylpropane group. In addition, an aliphatic cyclohexyl group or the like can also be used.
- R 22 represents an organic group having 3 to 20 carbon atoms, and an aromatic group having an aromatic ring is preferred from the heat resistance of the obtained polymer.
- —R 22 (OH) x— specifically, a hydroxyphenyl group, a dihydroxyphenyl group, a hydroxynaphthyl group, a dihydroxynaphthyl group, a hydroxybiphenyl group, a dihydroxybiphenyl group, a bis (hydroxyphenyl) hexafluoropropane group, Examples thereof include a bis (hydroxyphenyl) propane group, a hydroxydiphenyl ether group, and a dihydroxydiphenyl ether group.
- aliphatic groups such as a hydroxycyclohexyl group and a dihydroxycyclohexyl group can also be used.
- u and v are 1 or 2
- w in the general formula (9) and x in the general formula (10) are integers from 1 to 4.
- examples of preferable structures include the structures shown below, but are not limited thereto.
- examples of preferred structures include the structures shown below, but are not limited thereto.
- examples of preferable structures include the structures shown below, but are not limited thereto.
- R 1 represents a divalent to octavalent organic group having 2 to 30 carbon atoms and represents an acid structural component.
- acids in which R 1 is divalent include terephthalic acid, isophthalic acid, diphenyl ether dicarboxylic acid, naphthalenedicarboxylic acid, aromatic dicarboxylic acid such as bis (carboxyphenyl) propane, aromatic dicarboxylic acid such as cyclohexanedicarboxylic acid, and cyclobutanedicarboxylic acid.
- Acid cyclohexanedicarboxylic acid, malonic acid, dimethylmalonic acid, ethylmalonic acid, isopropylmalonic acid, di-n-butylmalonic acid, succinic acid, tetrafluorosuccinic acid, methylsuccinic acid, 2,2-dimethylsuccinic acid, 2,3-dimethylsuccinic acid, dimethylmethylsuccinic acid, glutaric acid, hexafluoroglutaric acid, 2-methylglutaric acid, 3-methylglutaric acid, 2,2-dimethylglutaric acid, 3,3-dimethylglutaric acid 3-ethyl-3-methyl Glutaric acid, adipic acid, octafluoroadipic acid, 3-methyladipic acid, octafluoroadipic acid, pimelic acid, 2,2,6,6-tetramethylpimelic acid, suberic acid, dodecafluorosuberic acid, azelaic acid, Sebac
- tricarboxylic acids such as trimellitic acid and trimesic acid, and a part of hydrogen atoms of these aromatic rings and hydrocarbons are substituted with alkyl groups having 1 to 10 carbon atoms, fluoroalkyl groups, halogen atoms, etc.
- -S-, -SO-, -SO 2- , -NH-, -NCH 3- , -N (CH 2 CH 3 )-, -N (CH 2 CH 2 CH 3 )-, -N ( It is a structure derived from one containing a bond such as CH (CH 3 ) 2 ) —, —COO—, —CONH—, —OCONH—, or —NHCONH—.
- Examples of the acid that makes R 1 trivalent include tricarboxylic acids such as trimellitic acid and trimesic acid.
- acids in which R 1 becomes tetravalent include pyromellitic acid, benzophenone tetracarboxylic acid, biphenyl tetracarboxylic acid, diphenyl ether tetracarboxylic acid, benzophenone tetracarboxylic acid, 1,2-dimethyl-1,2,3,4-cyclobutanetetra Carboxylic acid, 1,2,3,4-tetramethyl-1,2,3,4-cyclobutanetetracarboxylic acid, 1,2,4,5-cyclohexanetetracarboxylic acid, 3,4-dicarboxy-1,2 , 3,4-tetrahydro-1-naphthalene succinic acid, 5- (2,5-dioxotetrahydrofuryl) -3-methyl-3-cyclohexene-1,2-dicarboxylic acid, 2,3,5-tricarboxy- 2-cyclopentaneacetic acid, bicyclo [2.2.2] octo-7-en
- acids having a hydroxyl group such as hydroxyphthalic acid and hydroxytrimellitic acid can be used. These acid components may be used alone or in combination of two or more.
- R 1 represents a tetravalent to octavalent organic group having 2 to 30 carbon atoms and represents an acid structural component.
- acids in which R 1 becomes tetravalent include pyromellitic acid, benzophenone tetracarboxylic acid, biphenyl tetracarboxylic acid, diphenyl ether tetracarboxylic acid, benzophenone tetracarboxylic acid, 1,2-dimethyl-1,2,3,4-cyclobutanetetra Carboxylic acid, 1,2,3,4-tetramethyl-1,2,3,4-cyclobutanetetracarboxylic acid, 1,2,4,5-cyclohexanetetracarboxylic acid, 3,4-dicarboxy-1,2 , 3,4-tetrahydro-1-naphthalene succinic acid, 5- (2,5-dioxotetrahydrofuryl) -3-methyl-3-cyclohexene-1,2-
- acids having an amide group such as hydroxyphthalic acid and hydroxytrimellitic acid can also be used. These acid components may be used alone or in combination of two or more.
- R 3 and R 5 in the general formulas (1) and (3) may be the same or different and each represents a hydrogen atom or an organic group having 1 to 20 carbon atoms.
- R 3 and R 5 are preferably organic groups from the standpoint of solution stability of the resulting photosensitive resin solution, but hydrogen atoms are preferred from the viewpoint of solubility in an alkaline aqueous solution.
- a hydrogen atom and an alkyl group can be mixed.
- a preferred range is that 10% to 90% of each of R 3 and R 5 is a hydrogen atom. Moreover, when the number of carbon atoms of R 3 and R 5 exceeds 20, there is a tendency that they will not dissolve in the alkaline aqueous solution. From the above, R 3 and R 5 preferably contain at least one hydrocarbon group having 1 to 16 carbon atoms, and the others are preferably hydrogen atoms.
- n in the general formula (1) and l in the general formula (3) represent the number of carboxyl groups, and represent an integer of 0 to 2. More preferably, it is 1 or 2.
- p represents an integer of 0 to 4
- q represents an integer of 1 to 4
- n represents the number of repeating structural units of the polymer of the present invention, and is in the range of 10 to 100,000. If n is less than 10, the solubility of the polymer in an alkaline developer becomes too high, and the contrast between the exposed area and the unexposed area cannot be obtained, and a desired pattern may not be formed.
- n is preferably in the range of 10 to 100,000, more preferably in the range of 20 to 1,000, and most preferably in the range of 20 to 100, from the viewpoint of solubility of the polymer in an alkaline developer and improvement in elongation. It is a range.
- N in the general formulas (1) and (2) can be easily calculated by measuring the weight average molecular weight (Mw) by gel permeation chromatography (GPC), light scattering method, X-ray small angle scattering method or the like.
- Mw weight average molecular weight
- GPC gel permeation chromatography
- n Mw / M.
- the resin having the structure represented by the general formula (1) or (2) as a main component may be capped with a terminal capping agent such as monoamine, acid anhydride, acid chloride, or monocarboxylic acid.
- a terminal capping agent such as monoamine, acid anhydride, acid chloride, or monocarboxylic acid.
- the terminal blocking agent is preferably used in an amount of 0.1 mol% to 60 mol%, more preferably 5 mol% to 50 mol%, based on the total amine component of the resin.
- the end-capping agent introduced into the polymer can be easily detected by the following method. For example, by dissolving a polymer having an end capping agent dissolved in an acidic solution and decomposing it into an amine component and an acid anhydride component, which are constituent units of the polymer, this is measured by gas chromatography (GC) or NMR measurement, The end capping agent can be easily detected.
- the polymer component into which the end-capping agent is introduced can be easily detected directly by pyrolysis gas chromatograph (PGC), infrared spectrum and 13 C NMR spectrum measurement.
- PPC pyrolysis gas chromatograph
- the resin having the structure represented by the general formula (1) or (2) of the present invention as a main component may be copolymerized with a structure containing an aliphatic group as long as the heat resistance is not lowered.
- Aliphatic diamines include ethylenediamine, 1,3-diaminopropane, 2-methyl-1,3-propanediamine, 1,4-diaminobutane, 1,5-diaminopentane, 2-methyl-1,5-diaminopentane 1,6-diaminohexane, 1,7-diaminoheptane, 1,8-diaminooctane, 1,9-diaminononane, 1,10-diaminodecane, 1,11-diaminoundecane, 1,12-diaminododecane, , 2-cyclohexanediamine, 1,3-cyclohexanediamine, 1,4-cyclohexanediamine, 1,2-bis (aminomethyl) cyclohexane, 1,3-bis (aminomethyl) cyclohexane, 1,4-bis (aminomethyl) ) Cyclohexane, 4,4'
- the use of a linear aliphatic alkyldiamine is preferable because flexibility is imparted and the elongation at break is improved, and the elastic modulus is lowered, whereby the warpage of the wafer is suppressed. These characteristics are effective in multilayers and thick films.
- the residue derived from the aliphatic alkyl diamine in all diamine residues is preferably 10 mol% or more, and from the viewpoint of heat resistance, it is preferably 50 mol% or less.
- the diamine component include those obtained by copolymerizing 1 to 10 mol% of bis (3-aminopropyl) tetramethyldisiloxane, bis (p-amino-phenyl) octamethylpentasiloxane, and the like.
- the resin whose main component is the structure represented by the general formula (1) is synthesized by one of the following methods.
- polyamic acid or polyamic acid ester for example, a method of reacting a tetracarboxylic dianhydride and a diamine compound at a low temperature, a diester is obtained by tetracarboxylic dianhydride and an alcohol, and then in the presence of an amine and a condensing agent And a method in which a diester is obtained with tetracarboxylic dianhydride and an alcohol, and then the remaining dicarboxylic acid is acid chlorideed and reacted with an amine.
- Polyhydroxyamide can be used in place of polyamic acid as a heat resistant polymer precursor similar to polyamic acid.
- polyhydroxyamide it can be obtained by a production method in which a bisaminophenol compound and a dicarboxylic acid are subjected to a condensation reaction. Specifically, a dehydrating condensing agent such as dicyclohexylcarbodiimide (DCC) is reacted with an acid, and a bisaminophenol compound is added thereto, or a solution of a bisaminophenol compound added with a tertiary amine such as pyridine is added to a dicarboxylic acid. There is a method of dropping a solution of dichloride.
- DCC dicyclohexylcarbodiimide
- the resin having the structure represented by the general formula (2) as a main component includes a ring-closed polyimide structure
- the resin is synthesized using a known imidization reaction method after obtaining the polyimide precursor.
- the resin having the structure represented by the general formula (1) or (2) as a main component is polymerized by the above method, and then poured into a large amount of water or a methanol / water mixture to cause precipitation. It is desirable to filter, dry and isolate. By this precipitation operation, unreacted monomers and oligomer components such as dimers and trimers are removed, and film properties after thermosetting are improved.
- the photosensitive resin composition of the present invention may contain an alkali-soluble resin other than the resin whose main component is the structure represented by the general formula (1) or (2).
- an alkali-soluble resin other than the resin whose main component is the structure represented by the general formula (1) or (2).
- polyamides acrylic polymers copolymerized with acrylic acid, novolac resins, resole resins, siloxane resins, polyhydroxystyrene resins, and cross-linking groups such as methylol groups, alkoxymethyl groups, epoxy groups, acrylic groups, etc. Examples thereof include introduced resins and copolymers thereof.
- Such a resin is soluble in an aqueous alkali solution such as tetramethylammonium hydroxide, choline, triethylamine, dimethylaminopyridine, monoethanolamine, diethylaminoethanol, sodium hydroxide, potassium hydroxide, sodium carbonate.
- an aqueous alkali solution such as tetramethylammonium hydroxide, choline, triethylamine, dimethylaminopyridine, monoethanolamine, diethylaminoethanol, sodium hydroxide, potassium hydroxide, sodium carbonate.
- the resin containing as a main component the structure represented by the general formula (1) or (2) is preferably 30% by weight or more.
- the photosensitive resin composition of the present invention uses (b) a quinonediazide compound as a photosensitizer.
- the quinonediazide compound is a compound in which a sulfonic acid of quinonediazide is bonded to a polyhydroxy compound with an ester, a sulfonic acid of quinonediazide is bonded to a polyamino compound in a sulfonamide, and a sulfonic acid of quinonediazide is bonded to a polyhydroxypolyamino compound in an ester bond and / or sulfonamide. Examples include those that are combined.
- quinonediazide Although all the functional groups of these polyhydroxy compounds and polyamino compounds may not be substituted with quinonediazide, it is preferable that 50 mol% or more of the entire functional groups are substituted with quinonediazide. If it is less than 50 mol%, the solubility in an alkali developer becomes too high, and a contrast with an unexposed portion cannot be obtained, and a desired pattern may not be obtained.
- a quinonediazide compound it is possible to obtain a positive photosensitive resin composition that is sensitive to i-line (365 nm), h-line (405 nm), and g-line (436 nm) of a mercury lamp that is a general ultraviolet ray. it can.
- Polyhydroxy compounds include Bis-Z, BisP-EZ, TekP-4HBPA, TrisP-HAP, TrisP-PA, TrisP-SA, TrisOCR-PA, BisOCHP-Z, BisP-MZ, BisP-PZ, BisP-IPZ, BisOCP -IPZ, BisP-CP, BisRS-2P, BisRS-3P, BisP-OCHP, Methylenetris-FR-CR, BisRS-26X, DML-MBPC, DML-MBOC, DML-OCHP, DML-PCHP, DML-PC, DML-PTBP, DML-34X, DML-EP, DML-POP, dimethylol-BisOC-P, DML-PFP, DML-PSBP, DML-MTrisPC, TriML-P, TriML-35XL, TML-BP, TML-H , TML-pp-BPF, TML-BPA, TMOM-BP, HML-TPPHBA, HML-TPHAP (
- Polyamino compounds include 1,4-phenylenediamine, 1,3-phenylenediamine, 4,4′-diaminodiphenyl ether, 4,4′-diaminodiphenylmethane, 4,4′-diaminodiphenylsulfone, 4,4′-diaminodiphenyl Although sulfide etc. are mentioned, it is not limited to these.
- examples of the polyhydroxypolyamino compound include 2,2-bis (3-amino-4-hydroxyphenyl) hexafluoropropane, 3,3′-dihydroxybenzidine, and the like, but are not limited thereto.
- both a 5-naphthoquinonediazidesulfonyl group and a 4-naphthoquinonediazidesulfonyl group are preferably used.
- the 4-naphthoquinonediazide sulfonyl ester compound has absorption in the i-line region of a mercury lamp and is suitable for i-line exposure.
- the 5-naphthoquinone diazide sulfonyl ester compound has absorption up to the g-line region of a mercury lamp and is suitable for g-line exposure.
- a naphthoquinone diazide sulfonyl ester compound can be obtained by using a 4-naphthoquinone diazide sulfonyl group and a 5-naphthoquinone diazide sulfonyl group in the same molecule, or a 4-naphthoquinone diazide sulfonyl ester compound and a 5-naphthoquinone diazide sulfonyl ester compound. Can also be used in combination.
- the molecular weight of the quinonediazide compound is preferably 300 to 1500.
- the molecular weight is 1500 or less, the quinonediazide compound is sufficiently thermally decomposed in the heat treatment after pattern formation, and a cured film having excellent heat resistance, mechanical properties, and adhesiveness can be obtained. More preferably, it is 350 to 1200.
- the content of the (b) quinonediazide compound is preferably 1 part by weight or more and 80 parts by weight or less, more preferably 3 parts by weight or more and 60 parts by weight or less with respect to 100 parts by weight of the resin of the component (a). It is a range.
- the quinonediazide compound used in the present invention is synthesized from a specific phenol compound by the following method. For example, there is a method of reacting 5-naphthoquinonediazidesulfonyl chloride with a phenol compound in the presence of triethylamine. As a method for synthesizing a phenol compound, there is a method in which an ⁇ - (hydroxyphenyl) styrene derivative is reacted with a polyhydric phenol compound under an acid catalyst.
- the photosensitive resin composition of the present invention contains (c) a thermal crosslinking agent.
- a thermal crosslinking agent it is preferable to use an alkoxymethyl group-containing compound as the component (c).
- an alkoxymethyl group-containing compound By containing such a compound, the remaining film rate at the time of curing is improved, and a good pattern shape is obtained.
- the photosensitive resin composition obtained by containing the compound which shows thermal crosslinkability like (c) component hardly melt
- the alkoxymethyl group-containing compound of component (c) in the present invention preferably has both a compound having a phenolic hydroxyl group and a compound containing a urea organic group represented by N (C ⁇ O) N. .
- the compound having a phenolic hydroxyl group the crosslinkability of the alkoxymethyl group is improved, and heat curing at a low temperature is possible.
- the compound containing a urea-type organic group does not have a phenolic hydroxyl group after heat processing, it becomes possible to have high heat resistance. By containing both these compounds, it becomes a photosensitive resin composition having high heat resistance even after low-temperature curing.
- the alkoxymethyl group-containing compound has both a compound having a phenolic hydroxyl group and a compound containing a urea-based organic group, a deviation in solubility occurs on the surface and inside of the coating film. At this time, since the surface hardly-solubilized layer is formed on the coating film, the dissolution contrast between the unexposed area and the exposed area is improved, and the sensitivity is improved.
- alkoxymethyl group-containing compound containing a phenolic hydroxyl group examples include, but are not limited to, the following compounds.
- alkoxymethyl group-containing compound containing a urea organic group examples include but are not limited thereto.
- the content of the alkoxymethyl group-containing compound is preferably 0.5 parts by weight or more and 100 parts by weight or less, more preferably 1 part by weight or more and 70 parts by weight or less, with respect to 100 parts by weight of the resin of component (a). It is a range. When used in this range, sufficient crosslinking with the resin occurs, and a dissolution contrast between the exposed and unexposed areas can be obtained, so that high heat resistance and sensitivity can be obtained.
- Solvents used as component (d) of the present invention are polar aprotic solvents such as N-methyl-2-pyrrolidone, ⁇ -butyrolactone, N, N-dimethylformamide, N, N-dimethylacetamide, dimethyl sulfoxide, Ethers such as tetrahydrofuran, dioxane and propylene glycol monomethyl ether, ketones such as acetone, methyl ethyl ketone, diisobutyl ketone and diacetone alcohol, esters such as ethyl acetate, propylene glycol monomethyl ether acetate and ethyl lactate, aromas such as toluene and xylene Solvents such as group hydrocarbons can be used alone or in combination.
- the content of the solvent used in the present invention is preferably 50 parts by weight to 2000 parts by weight, and particularly preferably 100 parts by weight to 1500 parts by weight with respect to 100 parts by weight of the resin of component (a
- a compound selected from a compound represented by the following general formula (6) or (7) and a vinylsilane compound can also be used. This can be a component for improving adhesion to the substrate.
- Ar 1 and Ar 2 in the general formulas (6) and (7) represent an aromatic ring having 6 or more carbon atoms or an aromatic heterocyclic structure having 2 or more carbon atoms. Specific examples include, but are not limited to, a phenyl group, a naphthalene group, a biphenyl group, a triazine group, and a pyridine group.
- R 26 , R 27 , R 34 , R 35 , R 42 and R 43 in the general formulas (6) and (7) may be the same or different, and each represents a hydrogen atom or an organic group having 1 to 4 carbon atoms. To express.
- organic group having 1 to 4 carbon atoms include hydrocarbon such as methyl group, ethyl group and propyl group, and carbonyl group such as acetyl group. If the number of carbon atoms is 5 or more, the film shrinkage during curing becomes large, so care must be taken.
- R 28 , R 36 and R 41 may be the same or different and each represents an organic group having 1 to 6 carbon atoms;
- R 29 to R 33 and R 37 to R 40 may be the same or different; It represents a hydrocarbon group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or a phenyl group.
- R 29 to R 33 and R 37 to R 40 has an alkoxy group having 1 to 6 carbon atoms.
- a, d, f, and h are integers of 1 or more
- b, c, e, and g are integers of 0 or more.
- Specific examples of the hydrocarbon group include, but are not limited to, a methyl group, an ethyl group, and a propyl group.
- alkoxy group examples include, but are not limited to, a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, and an isobutoxy group. If the hydrocarbon group or alkoxy group has 7 or more carbon atoms, the film shrinkage at the time of curing will increase, so care must be taken. Although the following structure is mentioned as a preferable specific example of a compound represented by General formula (6) or (7), It is not limited to these.
- the structure shown below is most preferable.
- vinyl silane compound examples include vinyl trimethoxy silane, vinyl triethoxy silane, vinyl trichloro silane, vinyl tris ( ⁇ -methoxy ethoxy) silane, etc.
- 3-methacryloxypropyl trimethoxy silane, 3- Carbon-carbon unsaturated bond-containing silane compounds such as acryloxypropyltrimethoxysilane, p-styryltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, and 3-methacryloxypropylmethyldiethoxysilane can also be used.
- Vinyltrimethoxysilane and vinyltriethoxysilane are preferable.
- the compound represented by the above general formula (6) or (7) and the vinylsilane compound may be used alone or in combination, and in any case, good adhesion to various substrates is exhibited.
- the compound represented by the above general formula (6) or (7) and the vinylsilane compound are preferably contained in an amount of 0.001 part by weight to 30 parts by weight with respect to 100 parts by weight of the component (a) resin. Within this range, a sufficient adhesion improving effect can be obtained while maintaining the heat resistance of the composition. More preferably, it is 0.005 weight part or more and 20 weight part or less, More preferably, it is 0.01 weight part or more and 15 weight part or less.
- the photosensitive resin composition of the present invention may contain a photoacid generator selected from sulfonium salts, phosphonium salts, and diazonium salts.
- a photoacid generator selected from sulfonium salts, phosphonium salts, and diazonium salts.
- R 24 may be the same or different and each represents a hydrogen atom or an organic group having 1 to 20 carbon atoms.
- R 25 represents an organic group having 1 to 20 carbon atoms.
- ⁇ , ⁇ , and ⁇ each represent an integer from 0 to 5.
- triarylsulfonium salt represented by the general formula (11) are shown below, but are not limited thereto.
- the content of the photoacid generator selected from sulfonium salts, phosphonium salts, and diazonium salts is preferably 0.01 parts by weight or more and 50 parts by weight or less with respect to 100 parts by weight of the component (a) resin. is there. More preferably, it is the range of 0.05 weight part or more and 10 weight part or less.
- a compound having a phenolic hydroxyl group can be added for the purpose of improving the sensitivity of the photosensitive resin composition.
- the compound having a phenolic hydroxyl group is, for example, Bis-Z, BisOC-Z, BisOPP-Z, BisP-CP, Bis26X-Z, BisOTBP-Z, BisOCHP-Z, BisOCR-CP, BisP-MZ, BisP-EZ Bis26X-CP, BisP-PZ, BisP-IPZ, BisCR-IPZ, BisOCP-IPZ, BisOIPP-CP, Bis26X-IPZ, BisOTBP-CP, TekP-4HBPA (Tetrakis P-DO-BPA), TrisP-HAP, TrisP -PA, TrisP-SA, TrisOCR-PA, BisOFP-Z, BisRS-2P, BisPG-26X, BisRS-3P, BisOC-OCHP, BisPC-OCHP, Bis25X-OCHP, Bis2 X-OCHP, BisOCHP-OC, Bis236T-OCHP, Methylenetris-FR-CR, BisRS-26X, BisRS-OCHP (above
- preferred compounds having a phenolic hydroxyl group used in the present invention include, for example, Bis-Z, BisP-EZ, TekP-4HBPA, TrisP-HAP, TrisP-PA, BisOCHP-Z, BisP-MZ, BisP-PZ. , BisP-IPZ, BisOCP-IPZ, BisP-CP, BisRS-2P, BisRS-3P, BisP-OCHP, Methylenetris-FR-CR, BisRS-26X, BIP-PC, BIR-PC, BIR-PTBP, BIR- BIPC-F etc. are mentioned.
- particularly preferred compounds having a phenolic hydroxyl group are, for example, Bis-Z, TekP-4HBPA, TrisP-HAP, TrisP-PA, BisRS-2P, BisRS-3P, BIR-PC, BIR-PTBP, BIR- BIPC-F.
- the resulting resin composition hardly dissolves in an alkali developer before exposure, and easily dissolves in an alkali developer upon exposure. Development is easy in a short time.
- the addition amount of the compound having a phenolic hydroxyl group is preferably 1 part by weight or more and 50 parts by weight or less, more preferably 3 parts by weight or more and 40 parts by weight or less with respect to 100 parts by weight of the resin of component (a).
- the range is as follows.
- surfactants for the purpose of improving the wettability between the photosensitive composition and the substrate, surfactants, esters such as ethyl lactate and propylene glycol monomethyl ether acetate, alcohols such as ethanol, cyclohexanone, methyl isobutyl Ketones such as ketones and ethers such as tetrahydrofuran and dioxane may be contained. Further, inorganic particles such as silicon dioxide and titanium dioxide, polyimide powder, and the like can also be contained.
- the base substrate can be pretreated with an adhesion improving component used in the present invention.
- the adhesion improving component described above is added to 0.5 wt% to 20 wt% in a solvent such as isopropanol, ethanol, methanol, water, tetrahydrofuran, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, ethyl lactate or diethyl adipate.
- the surface solution is subjected to surface treatment by spin coating, dipping, spray coating, steam treatment or the like. In some cases, the reaction between the substrate and the adhesion improving component is advanced by heating to 50 ° C. to 300 ° C. thereafter.
- a photosensitive resin composition is applied on the substrate.
- a silicon wafer, ceramics, gallium arsenide, metal, glass, metal oxide insulating film, silicon nitride, ITO, or the like is used, but not limited thereto.
- the coating method include spin coating using a spinner, spray coating, roll coating, and slit die coating.
- the coating film thickness varies depending on the coating method, the solid content concentration of the composition, the viscosity, and the like, but is usually applied so that the film thickness after drying is 0.1 ⁇ m to 150 ⁇ m.
- the substrate coated with the photosensitive resin composition is dried to obtain a photosensitive resin film. Drying is preferably performed using an oven, a hot plate, infrared rays, or the like at a temperature of 50 ° C. to 150 ° C. for 1 minute to several hours.
- actinic radiation is irradiated on the photosensitive resin film through a mask having a desired pattern.
- actinic radiation used for exposure there are ultraviolet rays, visible rays, electron beams, X-rays and the like.
- the developer is an aqueous solution of tetramethylammonium, diethanolamine, diethylaminoethanol, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, triethylamine, diethylamine, methylamine, dimethylamine, dimethylaminoethyl acetate, dimethylaminoethanol, dimethylamino
- An aqueous solution of a compound exhibiting alkalinity such as ethyl methacrylate, cyclohexylamine, ethylenediamine, hexamethylenediamine and the like is preferable.
- these alkaline aqueous solutions may contain polar solvents such as N-methyl-2-pyrrolidone, N, N-dimethylformamide, N, N-dimethylacetamide, dimethyl sulfoxide, ⁇ -butyrolactone, dimethylacrylamide, methanol, ethanol, Alcohols such as isopropanol, esters such as ethyl lactate and propylene glycol monomethyl ether acetate, ketones such as cyclopentanone, cyclohexanone, isobutyl ketone, and methyl isobutyl ketone may be added singly or in combination. Good. After development, rinse with water. Here, alcohols such as ethanol and isopropyl alcohol, and esters such as ethyl lactate and propylene glycol monomethyl ether acetate may be added to water for rinsing treatment.
- polar solvents such as N-methyl-2-pyrrolidone, N, N-dimethylformamide,
- the obtained pattern resin film is heated at a temperature of 200 ° C. to 500 ° C. to be converted into a pattern cured film.
- This heat treatment is carried out for 5 minutes to 5 hours while raising the temperature stepwise or continuously raising the temperature within a certain temperature range.
- a method of performing heat treatment at 130 ° C., 200 ° C., and 350 ° C. for 30 minutes at a time, or a method of linearly raising the temperature from room temperature to 400 ° C. over 2 hours, and the like can be mentioned.
- the heat treatment is preferably performed at 250 ° C. or lower because there is a fear that the electrical characteristics of the element may change due to high-temperature heating or repetition thereof, and the warpage of the substrate may increase.
- Pattern cured films formed from the photosensitive resin composition of the present invention are used for applications such as semiconductor passivation films, protective films for semiconductor elements, interlayer insulating films for multilayer wiring for high-density mounting, and insulating layers for organic electroluminescent elements. It is done.
- FIG. 1 is an enlarged cross-sectional view of a pad portion of a semiconductor device having a bump according to the present invention.
- a passivation film 3 is formed on an input / output Al pad 2 in a silicon wafer 1, and a via hole is formed in the passivation film 3.
- a pattern (insulating film) 4 made of the photosensitive resin composition of the present invention is formed thereon, and a metal (Cr, Ti, etc.) film 5 is formed so as to be connected to the Al pad 2.
- the metal film 5 insulates between the pads by etching the periphery of the solder bump 10.
- a barrier metal 8 and a solder bump 10 are formed on the insulated pad.
- the metal wiring 6 is formed by plating.
- the photosensitive resin composition of the present invention is applied, and a pattern (insulating film 7) as shown in FIGS. 2 to 2d is formed through a photolithography process.
- a multilayer wiring structure having three or more layers is formed, each layer can be formed by repeating the above steps.
- barrier metal 8 and solder bump 10 are formed. Then, the wafer is diced along the last scribe line 9 and cut into chips.
- Varnish was spin-coated on an 8-inch silicon wafer, and then baked for 3 minutes on a 120 ° C. hot plate (using a coating and developing apparatus Act-8 manufactured by Tokyo Electron Ltd.) to prepare a pre-baked film having a thickness of 9 ⁇ m. .
- This film was exposed using an i-line stepper (Nikon NSR i9) at an exposure amount of 0 to 1000 mJ / cm 2 in 10 mJ / cm 2 steps.
- TMAH tetramethylammonium
- the exposure amount (hereinafter referred to as the minimum exposure amount Eth) at which the exposed portion was not completely eluted after exposure and development was defined as sensitivity. If Eth is 400 mJ / cm 2 or less, it can be determined that the sensitivity is high. 300 mJ / cm 2 or less is more preferable.
- TGA thermogravimetric analyzer
- a sample having a 5% weight loss temperature of 400 ° C. or higher was judged good ( ⁇ ), a sample having a weight loss temperature of 370 ° C. or higher and lower than 400 ° C. was insufficient ( ⁇ ), and a sample having a temperature of less than 370 ° C. was rejected (X).
- TMA thermomechanical analyzer
- TMASS-6100 manufactured by Seiko Electronics Industry
- Temperature rising profile Temperature rising from 30 ° C. to 300 ° C. at [20 ° C./min]
- Synthesis Example 1 Synthesis of hydroxyl group-containing diamine (a) 18.3 g (0.05 mol) of BAHF was dissolved in 100 mL of acetone and 17.4 g (0.3 mol) of propylene oxide, and cooled to -15 ° C. A solution prepared by dissolving 20.4 g (0.11 mol) of 4-nitrobenzoyl chloride in 100 mL of acetone was added dropwise thereto. After completion of the dropwise addition, the mixture was reacted at ⁇ 15 ° C. for 4 hours and then returned to room temperature. The precipitated white solid was filtered off and vacuum dried at 50 ° C.
- the precipitate was dissolved in 200 mL of GBL, 3 g of 5% palladium-carbon was added, and the mixture was vigorously stirred. A balloon filled with hydrogen gas was attached thereto, and stirring was continued until the balloon of hydrogen gas did not contract any more at room temperature, and further stirred for 2 hours with the balloon of hydrogen gas attached. After completion of the stirring, the palladium compound was removed by filtration, and the solution was concentrated to half by a rotary evaporator. Ethanol was added thereto and recrystallization was performed to obtain crystals of the target compound.
- Synthesis Example 3 Synthesis of hydroxyl group-containing diamine (c) 2-Amino-4-nitrophenol (15.4 g, 0.1 mol) was dissolved in acetone (100 mL) and propylene oxide (17.4 g, 0.3 mol). Cooled to ° C. A solution prepared by dissolving 20.4 g (0.11 mol) of 4-nitrobenzoyl chloride in 100 mL of acetone was gradually added dropwise thereto. After completion of the dropwise addition, the mixture was reacted at ⁇ 15 ° C. for 4 hours. Thereafter, the precipitate formed by returning to room temperature was collected by filtration. Thereafter, the target compound crystal was obtained in the same manner as in Synthesis Example 2.
- Synthesis Example 5 Synthesis of quinonediazide compound (e) TrisP-HAP (trade name, manufactured by Honshu Chemical Industry Co., Ltd.), 15.31 g (0.05 mol) and 5-naphthoquinonediazidesulfonyl acid chloride 40. 28 g (0.15 mol) was dissolved in 450 g of 1,4-dioxane and brought to room temperature. A quinonediazide compound (e) was obtained in the same manner as in Synthesis Example 4 using 15.18 g of triethylamine mixed with 50 g of 1,4-dioxane.
- Synthesis Example 6 Synthesis of quinonediazide compound (f) TrisP-PA (trade name, manufactured by Honshu Chemical Industry Co., Ltd.), 21.22 g (0.05 mol) and 5-naphthoquinonediazidesulfonyl chloride 26. 86 g (0.10 mol) and 13.43 g (0.05 mol) of 4-naphthoquinone diazide sulfonyl chloride were dissolved in 450 g of 1,4-dioxane and brought to room temperature. A quinonediazide compound (f) was obtained in the same manner as in Synthesis Example 4 using 12.65 g of triethylamine mixed with 50 g of 1,4-dioxane.
- Synthesis Example 7 Synthesis of quinonediazide compound (g) In a dry nitrogen stream, 11.41 g (0.05 mol) of bisphenol A and 26.86 g (0.1 mol) of 4-naphthoquinonediazidesulfonyl acid chloride were added to 1,4-dioxane. Dissolved in 450 g and brought to room temperature. Here, 10.12 g of triethylamine mixed with 50 g of 1,4-dioxane was used, and a quinonediazide compound (g) was obtained in the same manner as in Synthesis Example 4.
- Synthesis Example 8 Synthesis of acrylic resin (h) In a 500 ml flask, 5 g of 2,2′-azobis (isobutyronitrile), 5 g of t-dodecanethiol, propylene glycol monomethyl ether acetate (hereinafter abbreviated as PGMEA) 150 g was charged. Thereafter, 30 g of methacrylic acid, 35 g of benzyl methacrylate, and 35 g of tricyclo [5.2.1.0 2,6 ] decan-8-yl methacrylate were charged and stirred for a while at room temperature. The mixture was stirred at 5 ° C. for 5 hours.
- PGMEA propylene glycol monomethyl ether acetate
- Synthesis Example 9 Synthesis of novolak resin (i) Under a dry nitrogen stream, 70.2 g (0.65 mol) of m-cresol, 37.8 g (0.35 mol) of p-cresol, 75.5 g of a 37 wt% aqueous formaldehyde solution ( 0.93 mol of formaldehyde), 0.63 g (0.005 mol) of oxalic acid dihydrate, and 264 g of methyl isobutyl ketone were immersed in an oil bath, and the polycondensation reaction was performed for 4 hours while refluxing the reaction solution. went.
- a novolac resin (i) polymer solid was obtained. From GPC, Mw was 3,500. ⁇ -Butyrolactone (GBL) was added to the obtained novolak resin (i) to obtain a novolak resin (i) solution having a solid content concentration of 43% by weight.
- Synthesis Example 10 Synthesis of polyhydroxystyrene (j) 500 ml of tetrahydrofuran and 0.01 mol of sec-butyllithium as an initiator were added to a mixed solution of pt-butoxystyrene and styrene in a molar ratio of 3: 1. 20 g was added and polymerized with stirring for 3 hours. The polymerization termination reaction was performed by adding 0.1 mol of methanol to the reaction solution. Next, in order to purify the polymer, the reaction mixture was poured into methanol, and the precipitated polymer was dried to obtain a white polymer.
- Example 1 Under a dry nitrogen stream, 10.99 g (0.03 mol) of BAHF, 2.48 g (0.01 mol) of DDS, and 0.62 g (0.003 mol) of SiDA were dissolved in 100 g of NMP. To this, 15.51 g (0.05 mol) of ODPA was added together with 10 g of NMP, reacted at 60 ° C. for 1 hour, and then stirred at 180 ° C. for 4 hours. After stirring, the solution was poured into 2 L of water to obtain a white precipitate. The precipitate was collected by filtration, washed three times with water, and then dried for 72 hours in a vacuum dryer at 50 ° C. to obtain a powder of a closed ring polyimide resin (A).
- Example 2 Under a dry nitrogen stream, BAHF 5.49 g (0.015 mol), compound (a) 9.06 g (0.015 mol) obtained in Synthesis Example 1, DDS 3.72 g (0.015 mol), SiDA 0 .62 g (0.003 mol) was dissolved in 100 g of NMP. To this, 15.51 g (0.05 mol) of ODPA was added together with 10 g of NMP, and reacted at 40 ° C. for 1 hour. Thereafter, a solution obtained by diluting 13.10 g (0.11 mol) of N, N-dimethylformamide dimethylacetal with 15 g of NMP was added dropwise over 10 minutes. After dropping, the mixture was stirred at 40 ° C. for 1 hour. After completion of the reaction, the solution was poured into 2 L of water, and a solid precipitate was collected by filtration. The resin solid was dried with a vacuum dryer at 50 ° C. for 72 hours to obtain a polyimide precursor resin (B) powder.
- B poly
- Example 3 Under a dry nitrogen stream, BAHF 5.49 g (0.015 mol), compound (b) 5.67 g (0.04 mol) obtained in Synthesis Example 2, DDS 3.72 g (0.015 mol), SiDA 0 .62 g (0.003 mol) was dissolved in 100 g of NMP. To this, 11.11 g (0.025 mol) of 6FDA and 7.76 g (0.025 mol) of ODPA were added together with 10 g of NMP, and reacted at 40 ° C. for 1 hour. Thereafter, a solution obtained by diluting 13.10 g (0.11 mol) of N, N-dimethylformamide dimethylacetal with 15 g of NMP was added dropwise over 10 minutes.
- Example 4 Under a dry nitrogen stream, BAHF 5.49 g (0.015 mol), compound (c) 3.65 g (0.015 mol) obtained in Synthesis Example 3, DDS 2.48 g (0.01 mol), SiDA 0 .62 g (0.003 mol) was dissolved in 100 g of NMP. To this, 11.11 g (0.025 mol) of 6FDA and 7.76 g (0.025 mol) of ODPA were added together with 10 g of NMP, and reacted at 40 ° C. for 1 hour. Thereafter, a solution obtained by diluting 13.10 g (0.11 mol) of N, N-dimethylformamide dimethylacetal with 15 g of NMP was added dropwise over 10 minutes.
- a varnish of a positive photosensitive resin composition was obtained by adding 1.0 g of KBM-403 to 50 g of GBL. Using the obtained varnish, sensitivity evaluation, residual film rate evaluation, and heat resistance evaluation were performed as described above. The evaluation results are shown in Table 2.
- Example 5 Under a dry nitrogen stream, BAHF 1.83 g (0.005 mol), Compound (a) 9.06 g (0.015 mol) obtained in Synthesis Example 1, DDS 4.96 g (0.02 mol), SiDA 0 .62 g (0.003 mol) was dissolved in 100 g of NMP. To this, 15.51 g (0.05 mol) of ODPA was added together with 10 g of NMP, and reacted at 40 ° C. for 1 hour. Thereafter, a solution obtained by diluting 13.10 g (0.11 mol) of N, N-dimethylformamide dimethylacetal with 15 g of NMP was added dropwise over 10 minutes. After dropping, the mixture was stirred at 40 ° C. for 1 hour. After completion of the reaction, the solution was poured into 2 L of water, and a solid precipitate was collected by filtration. The resin solid was dried in a vacuum dryer at 50 ° C. for 72 hours to obtain a polyimide precursor resin (E).
- E polyimi
- a varnish of a positive photosensitive resin composition was obtained by adding 1.0 g of KBM-403 to 50 g of GB. Using the obtained varnish, sensitivity evaluation, residual film rate evaluation, and heat resistance evaluation were performed as described above. The evaluation results are shown in Table 2.
- Example 6 Under a dry nitrogen stream, BAHF 9.16 g (0.025 mol), compound (c) 2.43 g (0.01 mol) obtained in Synthesis Example 3, DDS 1.24 g (0.005 mol), SiDA 0 .62 g (0.003 mol) was dissolved in 100 g of NMP. To this, 11.11 g (0.025 mol) of 6FDA and 7.76 g (0.025 mol) of ODPA were added together with 10 g of NMP, and reacted at 40 ° C. for 1 hour. Thereafter, a solution obtained by diluting 13.10 g (0.11 mol) of N, N-dimethylformamide dimethylacetal with 15 g of NMP was added dropwise over 10 minutes.
- Example 7 17.5 g of the resin (E) obtained in Example 5, 2.3 g of the quinonediazide compound (f) obtained in Synthesis Example 6, 16 g of the novolak resin (i) obtained in Synthesis Example 9, and the crosslinker Nicalac MX- 270 2.0 g, crosslinker DMOM-PTBP 2.
- 0 g of KBM-403 1.0 g was added to 50 g of GBL to obtain a varnish of a positive type photosensitive resin composition. Using the obtained varnish, sensitivity evaluation, residual film rate evaluation, and heat resistance evaluation were performed as described above. The evaluation results are shown in Table 2.
- Example 8 17.5 g of the resin (D) obtained in Example 4, 2.3 g of the quinonediazide compound (g) obtained in Synthesis Example 7, 16 g of the novolak resin (i) obtained in Synthesis Example 9, and the crosslinking agent Nicalac MX-
- a varnish of a positive photosensitive resin composition was obtained by adding 2.0 g of 290, 2.0 g of a crosslinking agent HMOM-TPHAP, and 1.0 g of KBM-403 to 50 g of GBL. Using the obtained varnish, sensitivity evaluation, residual film rate evaluation, and heat resistance evaluation were performed as described above. The evaluation results are shown in Table 2.
- Example 9 17.5 g of the resin (F) obtained in Example 6; 2.3 g of the quinonediazide compound (e) obtained in Synthesis Example 5; 16 g of the polyhydroxystyrene resin (j) obtained in Synthesis Example 10; A varnish of a positive photosensitive resin composition was obtained by adding 2.0 g of -290, 2.0 g of a crosslinking agent DMOM-PC, and 1.0 g of KBM-403 to 50 g of GBL. Using the obtained varnish, sensitivity evaluation, residual film rate evaluation, and heat resistance evaluation were performed as described above. The evaluation results are shown in Table 2.
- a varnish of a positive photosensitive resin composition was obtained by adding 1.0 g of KBM403 to 50 g of GBL. Using the obtained varnish, sensitivity evaluation, residual film rate evaluation, and heat resistance evaluation were performed as described above. The evaluation results are shown in Table 2.
- a varnish of a positive photosensitive resin composition was obtained by adding 1.0 g of KBM-403 to 50 g of GBL. Using the obtained varnish, sensitivity evaluation, residual film rate evaluation, and heat resistance evaluation were performed as described above. The evaluation results are shown in Table 2.
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Abstract
Description
一般式(1)または(2)で表される構造を主成分とする樹脂において、R2は一般式(3)で表される有機基を2種類以上有することが好ましい。特に、そのうちの一種類が一般式(8)~(10)のいずれかで示される構造のものを含むことが、感度の向上効果を得られるため、より好ましい。一般式(3)で表される有機基を2種類以上有することで、塗布膜中の表面と内部で溶解性の偏りが生じる。この際に、塗布膜の表面に難溶化層が形成するため、未露光部と露光部の溶解コントラストが向上し、感度が向上する。
一般式(1)または(2)で表される構造を主成分とする樹脂は、上記の方法で重合させた後、多量の水やメタノール/水の混合液などに投入し、沈殿させて濾別乾燥し、単離する事が望ましい。この沈殿操作によって未反応のモノマーや、2量体や3量体などのオリゴマー成分が除去され、熱硬化後の膜特性が向上する。
本発明で用いられる溶媒の含有量は、(a)成分の樹脂100重量部に対して、50重量部~2000重量部が好ましく、特に100重量部~1500重量部が好ましい。
一般式(6)および(7)のR26、R27、R34、R35、R42、R43はそれぞれ同じでも異なっていてもよく、水素原子、または炭素数1~4の有機基を表す。炭素数1~4の有機基の具体例としては、メチル基、エチル基、プロピル基などの炭化水素、アセチル基などのカルボニル基などが挙げられる。炭素数5以上になると、キュア時の膜収縮が大きくなってしまうので注意を要する。R28、R36、R41はそれぞれ同じでも異なっていてもよく炭素数1~6の有機基を表し、R29~R33、R37~R40はそれぞれ同じでも異なっていてもよく、炭素数1~6の炭化水素基、炭素数1~6のアルコキシ基、またはフェニル基を表す。さらに、R29~R33およびR37~R40のうち少なくとも1つが炭素数1~6のアルコキシ基を有する。a、d、f、hは1以上の整数、b、c、e、gは0以上の整数を表す。1≦a+b≦4、1≦d+e≦4、1≦g+h≦4である。炭化水素基の具体例は、メチル基、エチル基、プロピル基などが挙げられるがこれらに限定されない。
感光性樹脂組成物に柔軟成分を導入した場合は、ウエハの反りが小さいため、露光やウエハの運搬を高精度に行うことができる。また、ポリイミド樹脂は機械特性にも優れるため、実装時も封止樹脂からの応力を緩和することできるため、low-k層のダメージを防ぎ、高信頼性の半導体装置を提供できる。
大日本スクリーン製造(株)製 “ラムダエース”STM-602を使用し、プリベーク後、現像後、キュア後の膜厚を、屈折率1.629として測定した。
8インチシリコンウエハ上にワニスを回転塗布し、次いで、120℃のホットプレート(東京エレクトロン(株)製の塗布現像装置Act-8使用)で3分間ベークし、厚さ9μmのプリベーク膜を作製した。この膜を、i線ステッパー(Nikon NSR i9)を用いて0~1000mJ/cm2の露光量にて10mJ/cm2ステップで露光した。露光後、2.38重量%のテトラメチルアンモニウム(TMAH)水溶液(三菱ガス化学(株)製、ELM-D)で90秒間現像し、ついで純水でリンスして、50μmの孤立パターンを有する現像膜を得た。
現像膜にて、露光および現像後、露光部分が完全に溶出してなくなった露光量(最小露光量Ethという)を感度とした。Ethが400mJ/cm2以下であれば高感度であると判断できる。300mJ/cm2以下がより好ましい。
プリベーク膜に対する現像膜の膜厚の割合を残膜率とし(残膜率=(現像膜の膜厚)/(プリベーク膜の膜厚)×100)、80%以上を合格とした。
<耐熱性樹脂被膜の作製>
6インチシリコンウエハ上に、ワニスをプリベーク後の膜厚が10μmとなるように塗布し、ついでホットプレート(東京エレクトロン(株)製の塗布現像装置Mark-7)を用いて、120℃で3分プリベークすることにより、感光性樹脂膜を得た。その後前記の方法で現像し、作製された感光性樹脂膜を、光洋サーモシステム(株)製イナートオーブンINH-21CDを用いて、窒素気流下(酸素濃度20ppm以下)、140℃で30分、その後350℃まで1時間で昇温して250℃で1時間熱処理をし、耐熱性樹脂被膜(キュア膜)を作製した。
シリコンウエハー上に作製した耐熱性樹脂被膜(キュア膜)を47%フッ化水素酸に室温で7分間浸積した後、水洗し、慎重にシリコンウエハーから剥離した。
(3)-1.熱減少温度測定
得られたキュア膜をTGA測定用のAlセルに入れ、熱重量分析装置(TGA)を用いて、下記の条件で測定し、初期重量からの5%重量減少温度を測定した。
昇温プロファイル:30℃~450℃を[20℃/min]で昇温
条件:フローガス 窒素(測定前フロー 10min)。
(3)-2.ガラス転移点測定
(3)で得られたキュア膜を15×30mmにカットし、1mmの長さ方向に約3mmφの円筒状を熱機械分析装置(TMA)を用いて、下記の条件で測定し、ガラス転移温度を求めた。
昇温プロファイル:30℃~300℃を[20℃/min]で昇温
条件:フローガス 窒素(測定前フロー 10min)。
6FDA:4,4’-ヘキサフルオロイソプロピリデンジフタル酸二無水物
ODPA:3,3’,4,4’-ジフェニルエーテルテトラカルボン酸二無水物
SiDA:1,1,3,3-テトラメチル-1,3-ビス(3-アミノプロピル)ジシロキサン
BAHF:2,2-ビス(3-アミノ-4-ヒドロキシフェニル)ヘキサフルオロプロパン
APBS:ビス(3-アミノ-4-ヒドロキシフェニル)スルホン
DAE:4,4’-ジアミノジフェニルエーテル
DDS:3,3’-ジアミノジフェニルスルフォン
NMP:N-メチル-2-ピロリドン
KBM-403:3-グリシドキシプロピルトリメトキシシラン。
BAHF18.3g(0.05モル)をアセトン100mL、プロピレンオキシド17.4g(0.3モル)に溶解させ、-15℃に冷却した。ここに4-ニトロベンゾイルクロリド20.4g(0.11モル)をアセトン100mLに溶解させた溶液を滴下した。滴下終了後、-15℃で4時間反応させ、その後室温に戻した。析出した白色固体をろ別し、50℃で真空乾燥した。
2-アミノ-4-ニトロフェノール15.4g(0.1モル)をアセトン50mL、プロピレンオキシド30g(0.34モル)に溶解させ、-15℃に冷却した。ここにイソフタル酸クロリド11.2g(0.055モル)をアセトン60mLに溶解させた溶液を徐々に滴下した。滴下終了後、-15℃で4時間反応させた。その後、室温に戻して生成している沈殿をろ過で集めた。
2-アミノ-4-ニトロフェノール15.4g(0.1モル)をアセトン100mL、プロピレンオキシド17.4g(0.3モル)に溶解させ、-15℃に冷却した。ここに4-ニトロベンゾイルクロリド20.4g(0.11モル)をアセトン100mLに溶解させた溶液を徐々に滴下した。滴下終了後、-15℃で4時間反応させた。その後、室温に戻して生成している沈殿をろ過で集めた。この後、合成例2と同様にして目的の化合物の結晶を得た。
乾燥窒素気流下、BisP-RS(商品名、本州化学工業(株)製)16.10g(0.05モル)と5-ナフトキノンジアジドスルホニル酸クロリド26.86g(0.1モル)を1,4-ジオキサン450gに溶解させ、室温にした。ここに、1,4-ジオキサン50gと混合させたトリエチルアミン10.12gを系内が35℃以上にならないように滴下した。滴下後30℃で2時間撹拌した。トリエチルアミン塩を濾過し、ろ液を水に投入させた。その後、析出した沈殿をろ過で集めた。この沈殿を真空乾燥機で乾燥させ、キノンジアジド化合物(d)を得た。
乾燥窒素気流下、TrisP-HAP(商品名、本州化学工業(株)製)、15.31g(0.05モル)と5-ナフトキノンジアジドスルホニル酸クロリド40.28g(0.15モル)を1,4-ジオキサン450gに溶解させ、室温にした。ここに、1,4-ジオキサン50gと混合させたトリエチルアミン15.18gを用い、合成例4と同様にしてキノンジアジド化合物(e)を得た。
乾燥窒素気流下、TrisP-PA(商品名、本州化学工業(株)製)、21.22g(0.05モル)と5-ナフトキノンジアジドスルホニル酸クロリド26.86g(0.10モル)、4-ナフトキノンジアジドスルホニル酸クロリド13.43g(0.05モル)を1,4-ジオキサン450gに溶解させ、室温にした。ここに、1,4-ジオキサン50gと混合させたトリエチルアミン12.65gを用い、合成例4と同様にしてキノンジアジド化合物(f)を得た。
乾燥窒素気流下、11.41g(0.05モル)のビスフェノールAと4-ナフトキノンジアジドスルホニル酸クロリド26.86g(0.1モル)を1,4-ジオキサン450gに溶解させ、室温にした。ここに、1,4-ジオキサン50gと混合させたトリエチルアミン10.12gを用い、合成例4と同様にしてキノンジアジド化合物(g)を得た。
500mlのフラスコに2,2’-アゾビス(イソブチロニトリル)を5g、t-ドデカンチオールを5g、プロピレングリコールモノメチルエーテルアセテート(以下、PGMEAと略する)を150g仕込んだ。その後、メタクリル酸を30g、ベンジルメタクリレートを35g、トリシクロ[5.2.1.02,6]デカン-8-イルメタクリレートを35g仕込み、室温でしばらく撹拌し、フラスコ内を窒素置換した後、70℃で5時間加熱撹拌した。次に、得られた溶液にメタクリル酸グリシジルを15g、ジメチルベンジルアミンを1g、p-メトキシフェノールを0.2g添加し、90℃で4時間加熱撹拌し、アルカリ可溶性のアクリル樹脂(h)溶液を得た。アクリル樹脂溶液(h)の固形分濃度は43重量%であった。
乾燥窒素気流下、m-クレゾール70.2g(0.65モル)、p-クレゾール37.8g(0.35モル)、37重量%ホルムアルデヒド水溶液75.5g(ホルムアルデヒド0.93モル)、シュウ酸二水和物0.63g(0.005モル)、メチルイソブチルケトン264gを仕込んだ後、油浴中に浸し、反応液を還流させながら4時間重縮合反応を行った。
その後、油浴の温度を3時間かけて昇温し、その後に、フラスコ内の圧力を40~67hPaまで減圧し、揮発分を除去し、溶解している樹脂を室温まで冷却して、アルカリ可溶性のノボラック樹脂(i)のポリマー固体を得た。GPCからMwは3,500であった。
得られたノボラック樹脂(i)にγ-ブチロラクトン(GBL)を加え、固形分濃度43重量%のノボラック樹脂(i)溶液を得た。
テトラヒドロフラン500ml、開始剤としてsec-ブチルリチウム0.01モルを加えた混合溶液に、p-t-ブトキシスチレンとスチレンをモル比3:1の割合で合計20gを添加し、3時間撹拌しながら重合させた。重合停止反応は反応溶液にメタノール0.1モルを添加して行った。 次にポリマーを精製するために反応混合物をメタノール中に注ぎ、沈降した重合体を乾燥させたところ白色重合体が得られた。更に、アセトン400mlに溶解し、60℃で少量の濃塩酸を加えて7時間撹拌後、水に注ぎ、ポリマーを沈澱させ、p-t-ブトキシスチレンを脱保護してヒドロキシスチレンに変換し、洗浄乾燥したところ、精製されたp-ヒドロキシスチレンとスチレンの共重合体(j)が得られた。
乾燥窒素気流下、BAHF 10.99g(0.03モル)、DDS 2.48g(0.01モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここにODPA 15.51g(0.05モル)をNMP10gとともに加えて、60℃で1時間反応させ、次いで180℃で4時間撹拌した。撹拌終了後、溶液を水2Lに投入して白色沈殿を得た。この沈殿を濾過で集めて、水で3回洗浄した後、50℃の真空乾燥機で72時間乾燥し既閉環ポリイミド樹脂(A)の粉末を得た。
乾燥窒素気流下、BAHF 5.49g(0.015モル)、合成例1で得られた化合物(a) 9.06g(0.015モル)、DDS 3.72g(0.015モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここにODPA 15.51g(0.05モル)をNMP10gとともに加えて、40℃で1時間反応させた。その後、N、N-ジメチルホルムアミドジメチルアセタール13.10g(0.11モル)をNMP15gで希釈した溶液を10分かけて滴下した。滴下後、40℃で1時間撹拌した。反応終了後、溶液を水2Lに投入して、固体の沈殿をろ過で集めた。樹脂固体を50℃の真空乾燥機で72時間乾燥しポリイミド前駆体の樹脂(B)の粉末を得た。
乾燥窒素気流下、BAHF 5.49g(0.015モル)、合成例2で得られた化合物(b)5.67g(0.04モル)、DDS 3.72g(0.015モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここに6FDA 11.11g(0.025モル)、ODPA 7.76g(0.025モル)をNMP10gとともに加えて、40℃で1時間反応させた。その後、N、N-ジメチルホルムアミドジメチルアセタール13.10g(0.11モル)をNMP15gで希釈した溶液を10分かけて滴下した。滴下後、40℃で1時間撹拌した。反応終了後、溶液を水2Lに投入して、固体の沈殿をろ過で集めた。樹脂固体を50℃の真空乾燥機で72時間乾燥しポリイミド前駆体の樹脂(C)を得た。
乾燥窒素気流下、BAHF 5.49g(0.015モル)、合成例3で得られた化合物(c)3.65g(0.015モル)、DDS 2.48g(0.01モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここに6FDA 11.11g(0.025モル)、ODPA 7.76g(0.025モル)をNMP10gとともに加えて、40℃で1時間反応させた。その後、N、N-ジメチルホルムアミドジメチルアセタール13.10g(0.11モル)をNMP15gで希釈した溶液を10分かけて滴下した。滴下後、40℃で1時間撹拌した。反応終了後、溶液を水2Lに投入して、固体の沈殿をろ過で集めた。樹脂固体を50℃の真空乾燥機で72時間乾燥しポリイミド前駆体の樹脂(D)の粉末を得た。
乾燥窒素気流下、BAHF 1.83g(0.005モル)、合成例1で得られた化合物(a) 9.06g(0.015モル)、DDS 4.96g(0.02モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここにODPA 15.51g(0.05モル)をNMP10gとともに加えて、40℃で1時間反応させた。その後、N、N-ジメチルホルムアミドジメチルアセタール13.10g(0.11モル)をNMP15gで希釈した溶液を10分かけて滴下した。滴下後、40℃で1時間撹拌した。反応終了後、溶液を水2Lに投入して、固体の沈殿をろ過で集めた。樹脂固体を50℃の真空乾燥機で72時間乾燥しポリイミド前駆体の樹脂(E)を得た。
乾燥窒素気流下、BAHF 9.16g(0.025モル)、合成例3で得られた化合物(c) 2.43g(0.01モル)、DDS 1.24g(0.005モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここに6FDA 11.11g(0.025モル)、ODPA 7.76g(0.025モル)をNMP10gとともに加えて、40℃で1時間反応させた。その後、N、N-ジメチルホルムアミドジメチルアセタール13.10g(0.11モル)をNMP15gで希釈した溶液を10分かけて滴下した。滴下後、40℃で1時間撹拌した。反応終了後、溶液を水2Lに投入して、固体の沈殿をろ過で集めた。樹脂固体を50℃の真空乾燥機で72時間乾燥しポリイミド前駆体の樹脂(F)を得た。
実施例5で得られた樹脂(E)17.5g、合成例6で得られたキノンジアジド化合物(f)2.3g、合成例9で得られたノボラック樹脂(i)16g、架橋剤ニカラックMX-270 2.0g、架橋剤DMOM-PTBP 2 .0g、KBM-403 1.0gをGBL 50gに加えてポジ型感光性樹脂組成物のワニスを得た。得られたワニスを用いて前記のように、感度評価、残膜率評価、耐熱性評価を行った。評価結果を表2に示す。
実施例4で得られた樹脂(D)17.5g、合成例7で得られたキノンジアジド化合物(g)2.3g、合成例9で得られたノボラック樹脂(i)16g、架橋剤ニカラックMX-290 2.0g、架橋剤HMOM-TPHAP 2.0g、KBM-403 1.0gをGBL 50gに加えてポジ型感光性樹脂組成物のワニスを得た。得られたワニスを用いて前記のように、感度評価、残膜率評価、耐熱性評価を行った。評価結果を表2に示す。
実施例6で得られた樹脂(F)17.5g、合成例5で得られたキノンジアジド化合物(e)2.3g、合成例10で得られポリヒドロキシスチレン樹脂(j)16g、架橋剤ニカラックMX-290 2.0g、架橋剤DMOM-PC 2.0g、KBM-403 1.0gをGBL 50gに加えてポジ型感光性樹脂組成物のワニスを得た。得られたワニスを用いて前記のように、感度評価、残膜率評価、耐熱性評価を行った。評価結果を表2に示す。
乾燥窒素気流下、BAHF14.65g(0.04モル)、SiDA0.62g(0.003モル)をNMP 100gに溶解させた。ここにODPA 15.51g(0.05モル)をNMP10gとともに加えて、60℃で1時間反応させ、次いで180℃で4時間撹拌した。撹拌終了後、溶液を水2Lに投入して白色沈殿を得た。この沈殿を濾過で集めて、水で3回洗浄した後、50℃の真空乾燥機で72時間乾燥し既閉環ポリイミド樹脂(G)の粉末を得た。
乾燥窒素気流下、DAE 8.01g(0.04モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここにODPA 15.51g(0.05モル)をNMP10gとともに加えて、40℃で1時間反応させた。その後、N、N-ジメチルホルムアミドジメチルアセタール13.10g(0.11モル)をNMP15gで希釈した溶液を10分かけて滴下した。滴下後、40℃で1時間撹拌した。反応終了後、溶液を水2Lに投入して、固体の沈殿をろ過で集めた。樹脂固体を50℃の真空乾燥機で72時間乾燥しポリイミド前駆体の樹脂(H)の粉末を得た。
乾燥窒素気流下、合成例3で得られた化合物(c) 2.43g(0.01モル)、DDS 9.73g(0.04モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここに6FDA 11.11g(0.025モル)、ODPA 7.76g(0.025モル)をNMP10gとともに加えて、40℃で1時間反応させた。その後、N、N-ジメチルホルムアミドジメチルアセタール13.10g(0.11モル)をNMP15gで希釈した溶液を10分かけて滴下した。滴下後、40℃で1時間撹拌した。反応終了後、溶液を水2Lに投入して、固体の沈殿をろ過で集めた。樹脂固体を50℃の真空乾燥機で72時間乾燥しポリイミド前駆体の樹脂(I)を得た。
乾燥窒素気流下、BAHF 8.42g(0.023モル)、ABPS 9.73g(0.023モル)、SiDA 0.62g(0.003モル)をNMP 100gに溶解させた。ここにODPA 15.51g(0.05モル)をNMP10gとともに加えて、60℃で1時間反応させ、次いで180℃で4時間撹拌した。撹拌終了後、溶液を水2Lに投入して白色沈殿を得た。この沈殿を濾過で集めて、水で3回洗浄した後、50℃の真空乾燥機で72時間乾燥し既閉環ポリイミド樹脂(J)の粉末を得た。
2 Alパッド
3 パッシベーション膜
4 絶縁膜
5 金属(Cr、Ti等)膜
6 配線(Al、Cu等)
7 絶縁膜
8 バリアメタル
9 スクライブライン
10 半田バンプ
Claims (11)
- 下記一般式(1)または(2)で表される構造を主成分とする樹脂であって、R2が一般式(3)で表される有機基および一般式(4)で表される有機基を含む樹脂。
(式中、R1 は炭素数2~30の2価~8価の有機基である。R2は一般式(3)で表される有機基および一般式(4)で表される有機基を含む。R3、R5は同じでも異なっていてもよく水素原子、または炭素数1~20の有機基のいずれかを示す。R4は炭素数2~20より選ばれる3価~8価の有機基(スルホニル基を有する構造を除く)を示し、R6は炭素数2~30より選ばれる水酸基を有さずスルホニル基および芳香族環を有する2価~8価の有機基を示す。nは10から100000の範囲、m、lは0~2の整数、pは0~4の整数、qは1~4の整数を示す。ただしp+q>1である。)
- 前記一般式(1)または(2)で表される構造を主成分とする樹脂において、R2は一般式(3)で表される有機基と一般式(4)で表される有機基のモル比が9:1~5:5の比率である請求項2または3に記載の樹脂。
- 前記一般式(1)または(2)で表される構造を主成分とする樹脂において、R2は一般式(3)で表される有機基を2種類以上有する請求項2~4のいずれかに記載の樹脂。
- (a)請求項1~5のいずれかに記載の樹脂、(b)感光剤、(c)熱架橋剤、および(d)溶剤を含有し、ポジ型の感光性を有することを特徴とする感光性樹脂組成物。
- (c)熱架橋剤が、少なくとも、アルコキシメチル基およびフェノール性水酸基を有する化合物と、アルコキシメチル基および尿素系有機基を有する化合物の2種類を含むことを特徴とする請求項6記載の感光性樹脂組成物。
- 請求項6または7に記載の感光性樹脂組成物を支持基板上に塗布、乾燥し、感光性樹脂膜を得る工程、前記工程により得られた感光性樹脂膜を露光する工程、前記露光する工程を経た感光性樹脂膜をアルカリ水溶液を用いて現像しパターン樹脂膜を得る工程、および前記工程により得られたパターン樹脂膜を加熱処理する工程を含むパターン硬化膜の製造方法。
- 請求項8に記載のパターン硬化膜の製造方法により得られるパターン硬化膜を用いた層間絶縁膜。
- 請求項8に記載のパターン硬化膜の製造方法により得られるパターン硬化膜を用いた表面保護膜。
- 請求項9に記載の層間絶縁膜又は請求項10に記載の表面保護膜を有する電子部品。
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US20200012192A1 (en) * | 2017-02-21 | 2020-01-09 | Zeon Corporation | Photosensitive resin composition |
US11698586B2 (en) | 2018-03-23 | 2023-07-11 | Merck Patent Gmbh | Negative-working ultra thick film photoresist |
WO2025100236A1 (ja) * | 2023-11-07 | 2025-05-15 | 太陽ホールディングス株式会社 | ポリヒドロキシアミド化合物、ネガ型感光性樹脂組成物、ドライフィルム、硬化物および電子部品 |
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WO2017064984A1 (ja) * | 2015-10-16 | 2017-04-20 | 東レ株式会社 | 樹脂および感光性樹脂組成物 |
KR102777033B1 (ko) * | 2018-05-25 | 2025-03-07 | 닛산 가가쿠 가부시키가이샤 | 탄소산소간 이중결합을 이용한 레지스트 하층막 형성 조성물 |
KR102624811B1 (ko) * | 2020-01-21 | 2024-01-16 | 도레이 카부시키가이샤 | 포지티브형 감광성 수지 조성물, 경화막, 적층체, 도전 패턴이 형성된 기판, 적층체의 제조 방법, 터치 패널 및 유기 el 표시 장치 |
CN114316263B (zh) * | 2022-01-17 | 2023-02-03 | 深圳职业技术学院 | 交联型聚酰胺酸酯、其制备方法、包含其的聚酰亚胺组合物及聚酰亚胺树脂膜的制备方法 |
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JPWO2016084694A1 (ja) | 2017-09-07 |
TW201625740A (zh) | 2016-07-16 |
KR102399270B1 (ko) | 2022-05-19 |
CN107001629B (zh) | 2019-09-24 |
EP3225647A1 (en) | 2017-10-04 |
EP3225647A4 (en) | 2018-08-01 |
KR20170088840A (ko) | 2017-08-02 |
TWI685542B (zh) | 2020-02-21 |
US10197915B2 (en) | 2019-02-05 |
CN107001629A (zh) | 2017-08-01 |
JP6711273B2 (ja) | 2020-06-17 |
US20170327644A1 (en) | 2017-11-16 |
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