WO2016147490A1 - ポジ型感光性樹脂組成物、ドライフィルム、硬化物およびプリント配線板 - Google Patents
ポジ型感光性樹脂組成物、ドライフィルム、硬化物およびプリント配線板 Download PDFInfo
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- WO2016147490A1 WO2016147490A1 PCT/JP2015/083465 JP2015083465W WO2016147490A1 WO 2016147490 A1 WO2016147490 A1 WO 2016147490A1 JP 2015083465 W JP2015083465 W JP 2015083465W WO 2016147490 A1 WO2016147490 A1 WO 2016147490A1
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- resin composition
- photosensitive resin
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- positive photosensitive
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- 0 O=C(*C1=O)C2C1c1ccccc1CC2 Chemical compound O=C(*C1=O)C2C1c1ccccc1CC2 0.000 description 1
- MUTGBJKUEZFXGO-UHFFFAOYSA-N O=C(C1C2CCCC1)OC2=O Chemical compound O=C(C1C2CCCC1)OC2=O MUTGBJKUEZFXGO-UHFFFAOYSA-N 0.000 description 1
- ZQYNIXTZANPCOT-UHFFFAOYSA-N O=C(C1C2c3ccccc3CC1)OC2=O Chemical compound O=C(C1C2c3ccccc3CC1)OC2=O ZQYNIXTZANPCOT-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/022—Quinonediazides
- G03F7/023—Macromolecular quinonediazides; Macromolecular additives, e.g. binders
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
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- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
Definitions
- the present invention relates to a positive photosensitive resin composition, a dry film, a cured product, and a printed wiring board.
- Polyimide is widely applied in various fields based on excellent properties such as high insulation, heat resistance, and high mechanical strength. For example, it is not limited to the aerospace field where it was first applied, but is being applied to coating films for semiconductor elements, flexible printed wiring boards, and heat-resistant insulating interlayer materials.
- Polyimide has an aspect that it is difficult to process due to poor thermoplasticity and solubility in organic solvents. For this reason, polyimide forms a desired pattern film by developing after irradiating actinic rays to a photosensitive resin composition obtained by blending a polyamic acid and a photoreactive compound, and then ring-closing by applying high temperature. It is widely used by the method of imidizing by making it.
- Patent Document 1 describes a positive photosensitive resin composition containing a polyamic acid condensate of an aromatic dianhydride and an aromatic diamine and a quinonediazide compound.
- Patent Document 2 describes a positive photosensitive resin composition containing a poly (amide-imide) resin having a specific structure and a photoacid generator.
- an object of the present invention is to provide a positive photosensitive resin composition having excellent resolution, a dry film having a resin layer obtained from the composition, a cured product of the composition or the resin layer of the dry film, and It is providing the printed wiring board which has this hardened
- the present inventors have changed from polyamic acid obtained from an acid anhydride having an aromatic skeleton and a diamine, to an acid anhydride having a cyclic aliphatic skeleton and an aromatic skeleton, and from a diamine. It was found that if the polyamic acid obtained was used, a cured product having an excellent resolution could be obtained. In addition, the present inventors have found that a cured product having better resolution is obtained by using a polyamic acid that is not substantially imidized, rather than a poly (amide-imide) resin obtained by imidizing a part of the polyamic acid. Found that can be obtained.
- the present invention comprises (A) an acid anhydride having a cyclic aliphatic skeleton and an aromatic skeleton, a polyamic acid obtained from diamine, and (B) a photoacid generator. It is a positive photosensitive resin composition.
- the polyamic acid (A) has the following general formula (I):
- R 1 is a tetravalent organic group containing a condensed ring of an aromatic ring and an aliphatic hydrocarbon ring, or a tetravalent organic group containing an aromatic group and an alicyclic hydrocarbon group.
- R 2 is a divalent organic group
- X is a divalent organic group
- m is an integer of 1 or more
- n is 0 or an integer of 1 or more.
- the polyamic acid (A) has the following general formula (II): (In the formula, R 2 is a divalent organic group, X is a divalent organic group, m is an integer of 1 or more, and n is 0 or an integer of 1 or more.) It is preferable that it is a compound which has a structure represented by these.
- the polyamic acid (A) has the following general formula (III):
- R 1 is a tetravalent organic group containing a condensed ring of an aromatic ring and an aliphatic hydrocarbon ring, or a tetravalent organic group containing an aromatic group and an alicyclic hydrocarbon group.
- R 2 , R 4 and R 6 are divalent organic groups
- R 3 and R 5 are tetravalent organic groups
- m is an integer of 1 or more
- n and s are each independently 0 or an integer of 1 or more
- at least one of n and s is an integer of 1 or more.
- the polyamic acid (A) has the following general formula (V): (Wherein R 2 , R 4 and R 6 are divalent organic groups, R 3 and R 5 are tetravalent organic groups, m is an integer of 1 or more, n and s are each independently 0 or an integer of 1 or more, and at least one of n and s is an integer of 1 or more. ) It is preferable that it is a compound which has a structure represented by these.
- the blending amount of the (B) photoacid generator is preferably 1 to 50 parts by mass with respect to 100 parts by mass of the (A) polyamic acid.
- the positive photosensitive resin composition of the present invention is an exposure step of exposing the coating film of the positive photosensitive resin composition, a heating step of heating the coating film after the exposure step, and developing after the heating step. It is preferable to use for the formation method of the pattern film containing a image development process.
- the dry film of the present invention is characterized by having a resin layer obtained by applying and drying the positive photosensitive resin composition on a film.
- the cured product of the present invention is obtained by curing the positive photosensitive resin composition or the resin layer of the dry film.
- the printed wiring board of the present invention is characterized by having the cured product.
- a positive photosensitive resin composition excellent in resolution a dry film having a resin layer obtained from the composition, a cured product of the composition or the resin layer of the dry film, and the A printed wiring board having a cured product can be provided.
- the positive photosensitive resin composition of the present invention contains (A) an acid anhydride having a cyclic aliphatic skeleton and an aromatic skeleton, a polyamic acid obtained from diamine, and (B) a photoacid generator. It is characterized by.
- a material having a cycloaliphatic skeleton and an aromatic skeleton is used as a raw acid anhydride of polyamic acid, a cured product having excellent resolution can be obtained.
- a pattern film having an L / S of 10/10 ⁇ m or less can be obtained.
- the positive photosensitive resin composition of the present invention exhibits particularly excellent resolution when heated after light irradiation and before development.
- the solubility of the irradiated part increases, and a difference in solubility occurs between the irradiated part and the non-irradiated part.
- the positive pattern film having excellent resolution can be formed by heating, imidizing a part of the polyamic acid in the unexposed area, and then developing. After development, it may be further heated at a higher temperature to completely imidize.
- the polyamic acid obtained from dianhydride having cycloaliphatic skeleton and aromatic skeleton and diamine
- the polyamic acid obtained from (A) an acid anhydride having a cyclic aliphatic skeleton and an aromatic skeleton and a diamine used in the present invention is substantially an imide. It has not been converted.
- the polyamic acid preferably has a structure represented by the following general formula (I).
- R 1 is a tetravalent organic group containing a condensed ring of an aromatic ring and an aliphatic hydrocarbon ring, or a tetravalent organic group containing an aromatic group and an alicyclic hydrocarbon group.
- R 2 is a divalent organic group
- X is a divalent organic group
- m is an integer of 1 or more
- n is 0 or an integer of 1 or more.
- the polyamic acid is obtained from only an acid anhydride having a cyclic aliphatic skeleton and an aromatic skeleton and a diamine, that is, n may be 0 in the general formula (I).
- Z 1 is an unsaturated hydrocarbon group having 4 to 12 carbon atoms that forms an aromatic ring (preferably a benzene ring, a naphthalene ring, particularly a benzene ring) together with an ethylene group common to Z 2.
- aromatic ring preferably a benzene ring, a naphthalene ring, particularly a benzene ring
- Z 2 is an aliphatic carbon atom having 3 to 10 carbon atoms (preferably 4 to 6, particularly 4 atoms) that forms an aliphatic hydrocarbon ring (alicyclic hydrocarbon) together with an ethylene group common to Z 1.
- R 6 is generally a hydrogen atom, an alkyl group (1 to 4 carbon atoms), an alkoxy group (1 to 4 carbon atoms), a hydroxy group or a halogen atom, preferably a hydrogen atom.
- Z 3 is an unsaturated hydrocarbon group having 4 to 12 carbon atoms that forms an aromatic ring (preferably a benzene ring, a naphthalene ring, particularly a benzene ring) together with an ethylene group common to Z 4.
- aromatic ring preferably a benzene ring, a naphthalene ring, particularly a benzene ring
- Z 4 is an aliphatic carbon atom having 3 to 10 carbon atoms (preferably 4 to 6, particularly 4 atoms) that forms an aliphatic hydrocarbon ring (alicyclic hydrocarbon) with an ethylene group common to Z 3.
- An aliphatic hydrocarbon ring having at least one alkyl group (1 to 4 carbon atoms), alkoxy group (1 to 4 carbon atoms), aryl group (6 to 6 carbon atoms) as a substituent. 10), a hydroxy group and a halogen atom.
- Two monovalent bonds represented by “-” one set of bonds, one set of bonds on the right side of Z 4 or one set of bonds on the left side
- a pair of bonds may be arranged adjacent to each other, or may be arranged with at least one carbon atom from each other if the ring is large.
- Z 5 is an unsaturated hydrocarbon group having 4 to 12 carbon atoms that forms an aromatic ring (preferably a benzene ring, a naphthalene ring, particularly a benzene ring) with an ethylene group common to Z 6.
- aromatic ring preferably a benzene ring, a naphthalene ring, particularly a benzene ring
- Two monovalent bonds represented by “-” are bonded to adjacent carbons, but combinations of two adjacent monovalent bonds represented by “-” are also adjacent to each other. If the ring is large, they may be arranged with at least one carbon atom from each other.
- R 7 is generally a hydrogen atom, an alkyl group (1 to 4 carbon atoms), an alkoxy group (1 to 4 carbon atoms), a hydroxy group or a halogen atom, preferably a hydrogen atom.
- Z 6 is an aliphatic group having 3 to 10 carbon atoms (preferably 4 to 6, particularly 4) which forms an aliphatic hydrocarbon ring (alicyclic hydrocarbon ring) together with an ethylene group common to Z 5.
- Z 7 is an unsaturated hydrocarbon group having 4 to 12 carbon atoms that forms an aromatic ring (preferably a benzene ring, a naphthalene ring, particularly a benzene ring) with an ethylene group common to Z 8, and is an aromatic ring Has at least one alkyl group (1 to 4 carbon atoms), alkoxy group (1 to 4 carbon atoms), aryl group (6 to 10 carbon atoms), hydroxy group, halogen atom as a substituent. You may have.
- Two "-" monovalent bond represented by (right bond Z 7 or the left bond of Z 7) is bonded to the carbon adjacent each pair of The bonds may be arranged adjacent to each other, or may be arranged with at least one carbon atom from each other if the ring is large.
- Z 8 is a saturated group having 3 to 10 carbon atoms (preferably 4 to 6, particularly 4) that forms an aliphatic hydrocarbon ring (alicyclic hydrocarbon ring) together with an ethylene group common to Z 7.
- a hydrocarbon group, and the saturated hydrocarbon ring is substituted with at least one alkyl group (1 to 4 carbon atoms), alkoxy group (1 to 4 carbon atoms), aryl group (6 to 6 carbon atoms). 10), a hydroxy group and a halogen atom.
- the organic groups represented by the formulas (1-1) and (1-2) are preferable, and the organic group represented by the formula (1-1) is particularly preferable. preferable.
- a 1 represents a divalent aromatic ring (preferably a benzene ring, a naphthalene ring, particularly a benzene ring) or AR—R 10 —AR [wherein AR represents a substituent ⁇ preferably at least one alkyl group (carbon atom A divalent benzene ring optionally having an aryl group (6 to 10 carbon atoms), an alkoxy group (1 to 4 carbon atoms), a hydroxy group, or a halogen atom ⁇ preferably unsubstituted), R 10 is an alkylene group (preferably having from 1 to 4 carbon atoms), - SO 2 -, - COO -, - is CONH, -SO 2 - are preferred. ].
- R 8 and R 9 are each independently a single bond, an alkylene group (1 to 4 carbon atoms), —SO 2 —, —COO— or —CONH—, preferably a single bond or —CONH—. .
- B 1 and B 2 are each independently an alicyclic hydrocarbon group (cycloaliphatic hydrocarbon group) having 5 to 12 carbon atoms (preferably 6 to 8, particularly 6), and saturated.
- the hydrocarbon ring is substituted with at least one alkyl group (1 to 4 carbon atoms), alkoxy group (1 to 4 carbon atoms), aryl group (6 to 10 carbon atoms), hydroxy group, It may have a halogen atom.
- X is a divalent organic group as described above, and examples thereof include an amic acid group, a hydroxyamic acid group, an aromatic or aliphatic ester group, an amide group, an amidoimide group, a siloxane group, The group which contains an epoxy group, an oxetanyl group, etc. as at least one part structure can be mentioned.
- M is an integer of 1 or more as described above.
- the preferred number average molecular weight of the polyamic acid is 1,000 to 1,000,000, more preferably 5,000 to 500,000, and even more preferably 10,000 to 200,000. Therefore, m is set so as to satisfy this. It is preferable.
- the compound having the structure represented by the general formula (I) is represented by the following general formula (II):
- the compound represented by the formula is particularly preferred.
- R 2 , X, m, and n are as described in formula (I).
- a compound having a structure represented by the following general formula (III) can also be preferably used. It is possible to improve the glass transition temperature (Tg) of the cured product by using a polyamic acid having a copolymer structure as represented by the general formula (III) in which n is 1 or more in the general formula (I). Become. That is, according to the positive photosensitive resin composition containing a polyamic acid having a copolymer structure, a cured product having excellent heat resistance in addition to resolution can be obtained.
- R 1 is a tetravalent organic group containing a condensed ring of an aromatic ring and an aliphatic hydrocarbon ring, or a tetravalent organic group containing an aromatic group and an alicyclic hydrocarbon group.
- R 2 , R 4 and R 6 are divalent organic groups
- R 3 and R 5 are tetravalent organic groups
- m is an integer of 1 or more
- n and s are each independently 0 or an integer of 1 or more
- at least one of n and s is an integer of 1 or more.
- R 1 and R 2 in the general formula (III) are as described in the formula (I).
- R 3 and R 5 are tetravalent organic groups as described above, for example, a group having a substituted or unsubstituted aromatic skeleton, or a substituted or unsubstituted cyclic aliphatic A group having a group skeleton, preferably a group having a substituted or unsubstituted aromatic skeleton, and more preferably a group having a benzene skeleton, a group having a biphenyl skeleton, or a group having a bisphenyl skeleton.
- the bisphenyl skeleton for example, —O—, —CH 2 —, —C 2 H 4 —, —C (CH 3 ) 2 —, —C (CF 3 ) 2 —, —SO 2 —
- Examples thereof include a bisphenyl skeleton linked by —SO—, —S— or —CO—.
- R 4 and R 6 in the general formula (III) are divalent organic groups as described above, and are the same as R 2 in the general formula (I).
- R 1 to R 4 , m, and n are as described in formula (III).
- Each of the compounds having a structure represented by the general formula (III) preferably has a structure represented by the following general formula (V).
- R 2 to R 6 , m, n, and s are as described in formula (III).
- R 2 to R 4 , m, and n are as described in formula (III).
- R 1 to R 6 may each contain an aliphatic group from the viewpoint of the absorption characteristics of the polymer.
- R 1 to R 6 when a group containing fluorine is included as R 1 to R 6 , the wavelength of light absorption can be reduced or the dielectric characteristics can be improved.
- the acid value of the (A) polyamic acid is preferably 100 mgKOH / g or more, more preferably 150 mgKOH / g or more, and further preferably 200 mgKOH / g or more.
- the upper limit of the acid value is preferably 300 mgKOH / g or less.
- the acid value of the polyamic acid is measured according to JIS K-5601-2-1. As a dilution solvent for the sample, a mixed solvent of acetone / water (9/1 volume ratio) with an acid value of 0 is used so that the acid value of the acid anhydride can also be measured.
- the method for synthesizing the (A) polyamic acid is not particularly limited, and can be prepared by a conventionally known method. For example, it can be synthesized by simply mixing an acid dianhydride having a cycloaliphatic skeleton and an aromatic skeleton and a diamine in a solution. Such a synthesis method is preferable because it can be synthesized by a one-step reaction, can be obtained easily and at low cost, and does not require further modification.
- the compound which has a structure represented by the said general formula (III) can also be easily manufactured as a copolymer by using 2 or more types in any one of an acid anhydride and diamine.
- the acid anhydride having a cyclic aliphatic skeleton and an aromatic skeleton used for obtaining the (A) polyamic acid is preferably a carboxylic dianhydride, more preferably a tetracarboxylic dianhydride. preferable. Examples include those represented by the following general formula (8).
- the cycloaliphatic skeleton of the acid anhydride is preferably a cyclohexane skeleton.
- the acid anhydride preferably does not have an alkyl group (for example, a t-butyl group) on the aromatic skeleton.
- the acid anhydride preferably has an acid anhydride group having a succinic anhydride structure.
- Examples of the acid anhydride group having a succinic anhydride structure include the following acid anhydride groups.
- the following compounds are preferable.
- the molecular weight of the acid anhydride is preferably 600 or less, more preferably 500 or less, and even more preferably 400 or less.
- the lower limit of the molecular weight is preferably 250 or more.
- Examples of such other acid dianhydrides include ethylenetetracarboxylic dianhydride, butanetetracarboxylic dianhydride, cyclobutanetetracarboxylic dianhydride, methylcyclobutanetetracarboxylic dianhydride, cyclopentanetetra.
- Aliphatic tetracarboxylic dianhydrides such as carboxylic dianhydrides; pyromellitic dianhydrides, 3,3 ′, 4,4′-benzophenone tetracarboxylic dianhydrides, 2,2 ′, 3,3 ′ -Benzophenone tetracarboxylic dianhydride, 2,3 ', 3,4'-benzophenone tetracarboxylic dianhydride, 3,3', 4,4'-biphenyltetracarboxylic dianhydride, 2,2 ', 3,3′-biphenyltetracarboxylic dianhydride, 2,3 ′, 3,4′-biphenyltetracarboxylic dianhydride, 2,2 ′, 6,6′-biphenyl Tetracarboxylic dianhydride, 2,2-bis (3,4-dicarboxyphenyl) propane dianhydride, 2,2-bis (2,3-dicarboxyphenyl)
- Examples of the diamine used for obtaining the (A) polyamic acid include diamines represented by the following general formula (10). However, the following are examples, and known ones can be used as long as they do not contradict the gist of the present invention.
- the diamine preferably has an aromatic ring, and more preferably has a plurality of aromatic rings. In the case of having a plurality of aromatic rings, it is preferable that the aromatic rings are bonded directly or via a (thio) ether group.
- Examples of diamines when R 2 is a divalent aromatic group include paraphenylenediamine, 3,3′-dimethyl-4,4′-diaminobiphenyl, 2,2′-dimethyl-4,4′- Diaminobiphenyl, 3,3′-dimethoxy-4,4′-diaminobiphenyl, 3,3′-dichloro-4,4′-diaminobiphenyl, 9,10-bis (4-aminophenyl) anthracene, 4,4 ′ -Diaminobenzophenone, 4,4'-diaminodiphenyl sulfone, 3,3'-diaminodiphenyl sulfone, 4,4'-diaminodiphenyl sulfoxide, 1,3-bis (3-aminophenoxy) benzene, bis [4- (4-Aminophenoxy) phenyl] sulfone, bis [4- (3-aminophenoxy) phenyl
- Examples of diamines when R 2 is a divalent aliphatic group include 1,1-metaxylylenediamine, 1,3-propanediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, heptamethylenediamine Octamethylene diamine, nonamethylene diamine, 4,4-diaminoheptamethylene diamine, 1,4-diaminocyclohexane, isophorone diamine, tetrahydrodicyclopentadienylene diamine, hexahydro-4,7-methanoin danylene dimethyl methylene diamine, Examples include tricyclo [6.2.1.02,7] -undecylenedimethyldiamine, 4,4′-methylenebis (cyclohexylamine), and isophoronediamine.
- diaminopolysiloxane represented by the following formula (11).
- R 28 and R 29 each independently represent a divalent hydrocarbon group
- R 30 and R 31 each independently represent a monovalent hydrocarbon group.
- p is 1 or more, preferably an integer of 1 to 10.
- R 28 and R 29 in the formula (11) are an alkylene group having 1 to 7 carbon atoms such as a methylene group, an ethylene group or a propylene group, or an arylene group having 6 to 18 carbon atoms such as a phenylene group.
- R 30 and R 31 include an alkyl group having 1 to 7 carbon atoms such as a methyl group and an ethyl group, and an aryl group having 6 to 12 carbon atoms such as a phenyl group.
- the diamine is particularly preferably a diaminodiphenyl ether such as 3,4'-diaminodiphenyl ether or 4,4'-diaminodiphenyl ether.
- the (A) polyamic acid a single type of material may be used, or a plurality of types may be used as a mixture. Further, it may be a copolymer in which R 1 and R 2 each have a plurality of structures.
- the blending amount of the polyamic acid is preferably 20 to 80% by mass based on the solid content of the composition.
- (B) Photoacid generator As a photoacid generator, a naphthoquinone diazide compound, a diarylsulfonium salt, a triarylsulfonium salt, a dialkylphenacylsulfonium salt, a diaryliodonium salt, an aryldiazonium salt, an aromatic tetracarboxylic acid ester, an aromatic sulfonic acid ester, Examples thereof include nitrobenzyl ester, aromatic N-oxyimide sulfonate, aromatic sulfamide, and benzoquinone diazosulfonic acid ester.
- the photoacid generator is preferably a dissolution inhibitor. Of these, a naphthoquinonediazide compound is preferable.
- naphthoquinonediazide compound examples include, for example, naphthoquinonediazide adduct of tris (4-hydroxyphenyl) -1-ethyl-4-isopropylbenzene (for example, TS533, TS567, TS583, TS593 manufactured by Sanpo Chemical Laboratory Co., Ltd.). ), Naphthoquinonediazide adducts of tetrahydroxybenzophenone (for example, BS550, BS570, BS599 manufactured by Sanpo Chemical Laboratory Co., Ltd.) and the like can be used.
- naphthoquinonediazide compound examples include, for example, naphthoquinonediazide adduct of tris (4-hydroxyphenyl) -1-ethyl-4-isopropylbenzene (for example, TS533, TS567, TS583, TS593 manufactured by Sanpo Chemical Laboratory Co., Ltd.).
- Such (B) photoacid generators may be used singly or in appropriate combination of two or more.
- the blending amount of the (B) photoacid generator is preferably 1 to 50 parts by mass with respect to 100 parts by mass of the (A) polyamic acid. By setting it as this range, the balance between the dissolution inhibiting effect and the dissolution promoting effect is improved.
- the amount is more preferably 10 to 40 parts by weight, still more preferably 10 to 35 parts by weight, and particularly preferably 10 to 25 parts by weight.
- a solvent can be mix
- the solvent is not particularly limited as long as it dissolves (A) polyamic acid, (B) photoacid generator, and other additives. Examples include N, N′-dimethylformamide, N-methylpyrrolidone, N-ethyl-2-pyrrolidone, N, N′-dimethylacetamide, diethylene glycol dimethyl ether, cyclopentanone, ⁇ -butyrolactone, ⁇ -acetyl- ⁇ - Examples include butyrolactone, tetramethylurea, 1,3-dimethyl-2-imidazolinone, N-cyclohexyl-2-pyrrolidone, dimethyl sulfoxide, hexamethylphosphoramide, pyridine, ⁇ -butyrolactone, and diethylene glycol monomethyl ether. These may be used alone or in combination of two or more. The amount of the solvent used can be in the range of 50 to 9
- a known sensitizer can be blended in order to further improve the photosensitivity.
- a known adhesion assistant can be added to the positive photosensitive resin composition of the present invention in order to improve the adhesion to the substrate.
- the positive photosensitive resin composition of the present invention preferably does not contain a compound having a phenolic hydroxyl group.
- various other organic or inorganic low molecular or high molecular compounds may be blended.
- a colorant, a surfactant, a leveling agent, a plasticizer, fine particles, and the like can be used.
- the fine particles include organic fine particles such as polystyrene and polytetrafluoroethylene, and inorganic fine particles such as colloidal silica, carbon, and layered silicate.
- the dry film of the present invention has a resin layer formed by applying and then drying the positive photosensitive resin composition of the present invention.
- the dry film of the present invention is used by laminating a resin layer so as to be in contact with a substrate.
- the dry film of the present invention is obtained by uniformly applying the positive photosensitive resin composition of the present invention to a carrier film by an appropriate method such as a blade coater, a lip coater, a comma coater, or a film coater, and drying the resin. It can be produced by forming a layer and preferably laminating a cover film thereon.
- the cover film and the carrier film may be the same film material or different films.
- any known materials used for dry films can be used.
- thermoplastic film such as a polyester film such as polyethylene terephthalate having a thickness of 2 to 150 ⁇ m is used.
- cover film a polyethylene film, a polypropylene film, or the like can be used, but it is preferable that the adhesive force with the photosensitive resin layer is smaller than that of the carrier film.
- the film thickness of the photosensitive resin layer on the dry film of the present invention is preferably 100 ⁇ m or less, and more preferably in the range of 5 to 50 ⁇ m.
- the pattern film that is a cured product of the positive photosensitive resin composition of the present invention is produced, for example, as follows.
- Step 1 a positive photosensitive resin composition is applied on a substrate and dried, or a resin layer is transferred from a dry film onto the substrate to obtain a coating film.
- a method for applying the positive photosensitive resin composition on the substrate methods conventionally used for applying the photosensitive resin composition, for example, spin coater, bar coater, blade coater, curtain coater, screen printing, etc.
- a coating method using a machine, a spray coating method using a spray coater, an ink jet method or the like can be used.
- a method for drying the coating film methods such as air drying, heat drying with an oven or hot plate, and vacuum drying are used.
- drying of a coating film on the conditions that the imidation of (A) polyamic acid in the photosensitive resin composition does not occur.
- natural drying, air drying, or heat drying can be performed at 70 to 120 ° C. for 20 minutes to 1 hour.
- drying is performed on a hot plate for 20 to 40 minutes.
- Vacuum drying is also possible, and in this case, it can be performed at room temperature for 20 minutes to 1 hour.
- the base material there is no particular limitation on the base material, and it can be widely applied to silicon wafers, wiring boards, various resins, metals, passivation protective films for semiconductor devices, and the like.
- the coating film is exposed through a photomask having a pattern or directly.
- the exposure light beam having a wavelength capable of activating the photoacid generator (B) and generating an acid is used.
- the exposure light beam preferably has a maximum wavelength in the range of 350 to 410 nm.
- the photosensitivity can be adjusted by appropriately using a sensitizer.
- a contact aligner, mirror projection, stepper, laser direct exposure apparatus, or the like can be used as the exposure apparatus.
- Step 3 heating is performed to imidize a part of the (A) polyamic acid in the unexposed area.
- the imidization rate is about 30%.
- the heating time and heating temperature are appropriately changed depending on (A) the polyamic acid, the coating film thickness, and (B) the type of the photoacid generator.
- a coating film thickness of about 10 ⁇ m it is about 110 seconds to 200 ° C. for about 30 seconds to 3 minutes.
- the heating temperature By setting the heating temperature to 110 ° C. or higher, partial imidization can be achieved efficiently.
- the heating temperature to 200 ° C. or lower, imidization of the exposed portion can be suppressed, the difference in solubility between the exposed portion and the unexposed portion can be increased, and the pattern film can be easily formed.
- step 4 the coating film is treated with a developer. Thereby, the exposed part in a coating film is removed and the pattern film
- an arbitrary method can be selected from conventionally known photoresist development methods such as a rotary spray method, a paddle method, an immersion method involving ultrasonic treatment, and the like.
- Developers include inorganic alkalis such as sodium hydroxide, sodium carbonate, sodium silicate, aqueous ammonia, organic amines such as ethylamine, diethylamine, triethylamine, triethanolamine, tetramethylammonium hydroxide, tetrabutylammonium hydroxide.
- aqueous solution of quaternary ammonium salts such as Further, if necessary, an appropriate amount of a water-soluble organic solvent such as methanol, ethanol, isopropyl alcohol or a surfactant may be added thereto. Thereafter, the coating film is washed with a rinse liquid as necessary to obtain a pattern film.
- a rinse liquid as necessary to obtain a pattern film.
- a rinsing liquid distilled water, methanol, ethanol, isopropanol or the like can be used alone or in combination. Moreover, you may use the said (C) solvent as a developing solution.
- step 5 the pattern film is heated to obtain a cured coating film (cured product).
- (A) polyamic acid may be completely imidized to obtain polyimide.
- the heating temperature is appropriately set so that the polyimide pattern film can be cured.
- heating is performed in an inert gas at 150 to 300 ° C. for about 5 to 120 minutes.
- a more preferable range of the heating temperature is 150 to 250 ° C, and a more preferable range is 180 to 220 ° C.
- the heating is performed by using, for example, a hot plate, an oven, or a temperature rising oven in which a temperature program can be set.
- the atmosphere (gas) may be air, or an inert gas such as nitrogen or argon.
- resin materials such as printing ink, adhesive, filler, electronic material, optical circuit component, molding material, resist material, building material, three-dimensional modeling, optical member, etc. are used.
- Various known fields and products, especially wide range of fields and products in which the properties of polyimide film such as heat resistance, dimensional stability and insulation are effective for example, paints or printing inks, color filters, and flexible displays It is suitably used as a forming material for films, semiconductor devices, electronic parts, interlayer insulating films, wiring coating films, optical circuits, optical circuit parts, antireflection films, holograms, optical members, building materials, and the like.
- the positive photosensitive resin composition of the present invention is mainly used as a pattern film forming material (resist), and the pattern film formed thereby imparts heat resistance and insulation as a permanent film made of polyimide.
- a pattern film forming material for example, color filters, flexible display films, electronic components, semiconductor devices, interlayer insulation films, wiring coating films such as solder resists and coverlay films, solder dams, optical circuits, optical circuit components, antireflection films It is suitable for forming other optical members or electronic members.
- the positive photosensitive resin composition of the present invention is excellent in resolution, it can be suitably used as a pattern film forming material for a package substrate, particularly a wafer level package substrate.
- the input amount of dehydrated NMP was 75% by mass of the amount of varnish of PAA.
- the acid anhydride “TDA” in the table is 4- (2,5-dioxotetrahydrofuran-3-yl) -1,2,3,4-tetrahydronaphthalene-1,2-dicarboxylic acid anhydride (new Nippon Science Co., Ltd. Rikacid TDA-100) was used.
- the input amount of dehydrated NMP was 75% by mass of the amount of varnish of PAA.
- pyromellitic anhydride manufactured by Mitsubishi Gas Chemical Co., Inc.
- PMDA acid anhydride
- Examples 1 to 16, Comparative Examples 1 to 3 The photo acid generator was mix
- surface is a compounding quantity per 100 mass parts of solid content of the varnish of polyamic acid.
- Contrast exposed area development speed (film thickness ⁇ m / development time min) / unexposed area development speed (film thickness ⁇ m / development time min)
- Example 17 to 20 [Evaluation of glass transition temperature]
- the photoacid generator B-1 (TS583, DNQ (diazonaphthoquinone) manufactured by Sanpo Chemical Laboratory Co., Ltd.) was added to 3 g of 15 mass% varnish of polyamic acid A-1, A-4, A-5, A-6. 0.0675 g was added to obtain photosensitive resin compositions of Examples 17 to 20.
- the obtained photosensitive resin composition was applied onto a silicon wafer with an applicator, heated on a hot plate at 100 ° C. for 10 minutes, and further heat-treated at 200 ° C. for 30 minutes to prepare a cured film.
- the cured film was peeled off from the silicon wafer, and the glass transition temperature (Tg) was measured.
- Tg was measured using a dynamic viscoelasticity measuring device RSA-G2 manufactured by TA Instrument under the conditions of 50 ° C. to 350 ° C., a heating rate of 10 ° C./min, and a frequency of 1 Hz in the atmosphere.
- the photosensitive resin composition of the present invention has an excellent contrast and a high-resolution positive pattern film can be obtained.
- the photosensitive resin composition of Comparative Example in which another polyamic acid was blended did not provide contrast, and a positive pattern film could not be formed.
- TDA is used as an acid anhydride having a cyclic aliphatic skeleton and an aromatic skeleton, and another acid anhydride to be copolymerized is selected.
- TDA is used as an acid anhydride having a cyclic aliphatic skeleton and an aromatic skeleton, and another acid anhydride to be copolymerized is selected.
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Abstract
Description
また、本発明者等は、ポリアミック酸の一部をイミド化したポリ(アミド-イミド)樹脂よりも、実質的にイミド化していないポリアミック酸を使用した方が解像性に優れた硬化物を得ることができることを見出した。
(式中、R1は、芳香族環と脂肪族炭化水素環との縮合環を含む4価の有機基、または芳香族基と脂環式炭化水素基とを含む4価の有機基であり、
R2は2価の有機基であり、
Xは2価の有機基であり、
mは1以上の整数であり、nは0または1以上の整数である。)
で表される構造を有する化合物であることが好ましい。
(式中、R2は2価の有機基であり、Xは2価の有機基であり、mは1以上の整数であり、nは0または1以上の整数である。)
で表される構造を有する化合物であることが好ましい。
(式中、R1は、芳香族環と脂肪族炭化水素環との縮合環を含む4価の有機基、または芳香族基と脂環式炭化水素基とを含む4価の有機基であり、
R2、R4およびR6は、2価の有機基であり、
R3およびR5は、4価の有機基であり、
mは、1以上の整数であり、nおよびsは、それぞれ独立して、0または1以上の整数であり、かつ、nおよびsの少なくとも一方は1以上の整数である。)
で表される構造を有する化合物であることが好ましい。
(式中、R2、R4およびR6は、2価の有機基であり、
R3およびR5は、4価の有機基であり、
mは、1以上の整数であり、nおよびsは、それぞれ独立して、0または1以上の整数であり、かつ、nおよびsの少なくとも一方は1以上の整数である。)
で表される構造を有する化合物であることが好ましい。
本発明では、ポリアミック酸の原料の酸無水物として、環状脂肪族骨格と芳香族骨格とを有するものを使用するので、解像性に優れた硬化物を得ることができる。例えば、L/Sが10/10μm以下のパターン膜を得ることができる。
また、本発明のポジ型感光性樹脂組成物は、光照射後かつ現像前に加熱した場合に、特に優れた解像性を発揮する。即ち、本発明のポジ型感光性樹脂組成物の塗膜に、活性光線を照射することにより、照射部の溶解性が上昇し、照射部と非照射部との間に溶解性の差が生ずる。その後、加熱し、未露光部のポリアミック酸の一部をイミド化した後、現像することによって、解像性に優れたポジ型パターン膜を形成することができる。現像後は、さらに高温で加熱し、完全にイミド化を行えばよい。
本発明で使用される(A)環状脂肪族骨格と芳香族骨格とを有する酸無水物と、ジアミンから得られるポリアミック酸(以下、「(A)ポリアミック酸」とも称する)は、実質的にイミド化されていない。(A)ポリアミック酸は、下記一般式(I)で表わされる構造を有することが好ましい。
R2は2価の有機基であり、
Xは2価の有機基であり、
mは1以上の整数であり、nは0または1以上の整数である。)
Z1は、Z2と共通するエチレン基と共に芳香族環(好ましくはベンゼン環、ナフタレン環、特にベンゼン環)を形成する炭素原子数4~12個の不飽和炭化水素基であり、芳香族環は置換基として少なくとも1個のアルキル基(炭素原子数1~4個)、アルコキシ基(炭素原子数1~4個)、アリール基(炭素原子数6~10個)、ヒドロキシ基、ハロゲン原子を有していてもよい。
Z3は、Z4と共通するエチレン基と共に芳香族環(好ましくはベンゼン環、ナフタレン環、特にベンゼン環)を形成する炭素原子数4~12個の不飽和炭化水素基であり、芳香族環は置換基として少なくとも1個のアルキル基(炭素原子数1~4個)、アルコキシ基(炭素原子数1~4個)、アリール基(炭素原子数6~10個)、ヒドロキシ基、ハロゲン原子を有していてもよい。
Z5は、Z6と共通するエチレン基と共に芳香族環(好ましくはベンゼン環、ナフタレン環、特にベンゼン環)を形成する炭素原子数4~12個の不飽和炭化水素基であり、芳香族環は置換基として少なくとも1個のアルキル基(炭素原子数1~4個)、アルコキシ基(炭素原子数1~4個)、アリール基(炭素原子数6~10個)、ヒドロキシ基、ハロゲン原子を有していてもよい。2個の「-」で表される1価の結合手は、隣接する炭素に結合しているが、2個の「-」で表される隣接する1価の結合手の組み合わせ同士も隣接して配置されてもよいし、環が大きければ、相互に少なくとも1個の炭素原子をおいて配置されてもよい。2個の「-」で表される1価の結合手は、隣接する炭素に結合しているが、「=CR7-」で表される2価の結合手は、「-」の結合手が結合する炭素の少なくとも1個の炭素原子をおいて隣の炭素原子に結合していることが好ましい。R7は一般に水素原子、アルキル基(炭素原子数1~4個)、アルコキシ基(炭素原子数1~4個)、ヒドロキシ基、ハロゲン原子であり、水素原子が好ましい。
Z7は、Z8と共通するエチレン基と共に芳香族環(好ましくはベンゼン環、ナフタレン環、特にベンゼン環)を形成する炭素原子数4~12個の不飽和炭化水素基であり、芳香族環は置換基として少なくとも1個のアルキル基(炭素原子数1~4個)、アルコキシ基(炭素原子数1~4個)、アリール基(炭素原子数6~10個)、ヒドロキシ基、ハロゲン原子を有していてもよい。2個の「-」で表される1価の結合手(Z7の右側の結合手、または、Z7の左側の結合手)は、それぞれ隣接する炭素に結合しているが、一組の結合手同士も隣接して配置されてもよいし、環が大きければ、相互に少なくとも1個の炭素原子をおいて配置されてもよい。
R2、R4およびR6は、2価の有機基であり、
R3およびR5は、4価の有機基であり、
mは、1以上の整数であり、nおよびsは、それぞれ独立して、0または1以上の整数であり、かつ、nおよびsの少なくとも一方は1以上の整数である。)
ここで、ビスフェニル骨格としては、例えば、-O-、-CH2-、―C2H4-、-C(CH3)2-、-C(CF3)2-、-SO2-、-SO-、-S-もしくは-CO-で連結されたビスフェニル骨格が挙げられる。
(A)ポリアミック酸の酸価は、JIS K-5601-2-1に準じて測定したものである。なお、試料の希釈溶剤としては、無水酸の酸価も測定できるようにアセトン/水(9/1体積比)の混合溶剤で酸価0のものを使用する。
(B)光酸発生剤としては、ナフトキノンジアジド化合物、ジアリールスルホニウム塩、トリアリールスルホニウム塩、ジアルキルフェナシルスルホニウム塩、ジアリールヨードニウム塩、アリールジアゾニウム塩、芳香族テトラカルボン酸エステル、芳香族スルホン酸エステル、ニトロベンジルエステル、芳香族N-オキシイミドスルフォネート、芳香族スルファミド、ベンゾキノンジアゾスルホン酸エステル等を挙げることができる。(B)光酸発生剤は、溶解阻害剤であることが好ましい。中でもナフトキノンジアジド化合物であることが好ましい。
本発明のドライフィルムは、本発明のポジ型感光性樹脂組成物を塗布後、乾燥して形成される樹脂層を有する。本発明のドライフィルムは、樹脂層を、基材に接するようにラミネートして使用される。
容量300mLのセパラブルフラスコに、下記表1に記載のジアミン30mmolを投入した後、窒素を流しながら、脱水NMP(N-メチルピロリドン)でジアミンを溶解させた。ジアミンを全て溶解させた後、下記表1に記載の酸無水物30mmolを徐々に加えた。少量のNMPでフラスコの壁に付着した酸無水物を反応溶液に流し入れた後、24時間室温で撹拌して反応させ、15質量%のポリアミック酸(PAA)A-1のワニスを得た。脱水NMPの投入量はPAAのワニスの量の75質量%であった。尚、表中の酸無水物「TDA」として、4-(2,5-ジオキソテトラヒドロフラン-3-イル)-1,2,3,4-テトラヒドロナフタレン-1,2-ジカルボン酸無水物(新日本理科社製リカシッドTDA-100)を用いた。ジアミン「4,4’-ODA」として、4,4’-ジアミノジフェニルエーテル(和歌山精化社製)を用いた。
ジアミンおよび酸無水物を、それぞれ以下の表2に示す化合物に変更した以外は合成例1と同様にしてポリアミック酸A-2およびA-3のワニスを得た。尚、表中の酸無水物「PPHT」としてN,N’-ビス(1,2-シクロヘキサンジカルボン酸無水物-4-イル)カルボニル-1,4-フェニレンジアミン(日本精化社製)を用いた。ジアミン「3,4’-ODA」として、3,4’-ジアミノジフェニルエーテル(ニチジュン化学社製)を用いた。
容量300mLのセパラブルフラスコに、下記表3に記載のジアミン30mmolを投入した後、窒素を流しながら、脱水NMP(N-メチルピロリドン)でジアミンを溶解させた。ジアミンを全て溶解させた後、下記表に記載の酸無水物TDA22.5mmolとPMDA7.5mmolを徐々に加えた。少量のNMPでフラスコの壁に付着した酸無水物を反応溶液に流し入れた後、24時間室温で撹拌して反応させ、15質量%のポリアミック酸(PAA)A-4のワニスを得た。脱水NMPの投入量はPAAのワニスの量の75質量%であった。尚、表中の酸無水物「PMDA」としてピロメリット酸無水物(三菱瓦斯化学社製)を用いた。
酸無水物の量を、TDA15mmolとPMDA15mmolに変更した以外は合成例4と同様にしてポリアミック酸A-5のワニスを得た。
酸無水物の量を、TDA7.5mmolとPMDA22.5mmolに変更した以外は合成例4と同様にしてポリアミック酸A-6のワニスを得た。
ジアミンおよび酸無水物を、それぞれ以下の表4に示す化合物に変更した以外は合成例1と同様にしてポリアミック酸R-1およびR-2のワニスを合成した。尚、表中の酸無水物「CBDA」として1,2,3,4-シクロブタンテトラカルボン酸二無水物(新日本薬業社製)を用いた。
表5に記載の組み合わせで、ポリアミック酸のワニスに対して、光酸発生剤を配合し、溶解させて、実施例および比較例の感光性樹脂組成物を得た。尚、表中の光酸発生剤の配合量は、ポリアミック酸のワニスの固形分100質量部あたりの配合量である。
実施例および比較例の各感光性樹脂組成物を、撹拌・脱泡装置を用いてワニス濃度を均一にした後、スピンコーターを用いてシリコン基板上に塗布し、ホットプレートで100℃30分乾燥させ、膜厚5μm程度の感光性樹脂組成物の乾燥塗膜を得た。この乾燥塗膜上に半分だけマスク(透過率0%)を配置して高圧水銀ランプを備える卓上型露光装置(三永電機社製)で1Jブロード露光を行った。次に、ホットプレートで表5に記載の条件のもと露光後加熱(PEB)を行った。これを1%NaOH水溶液もしくは1%Na2CO3水溶液にて現像し水でリンス後室温で乾燥させ、ポジ型パターン膜を得た。表5に光酸発生剤の添加量、PEB条件とコントラスト評価結果を示す。
上記コントラストを下記の式により求めた。
コントラスト=露光部現像速度(膜厚μm/現像時間min)/未露光部現像速度(膜厚μm/現像時間min)
膜厚(μm):現像前の膜厚から現像後の膜厚を差し引いた値
現像時間(min):現像液に浸漬させている時間
コントラストの値に従い下記のように評価した。
◎:10以上
〇:2以上~10未満
△:1以上~2未満
×:なし(溶解しなかった)
*2:和光純薬社製WPAG-149、(2-メチル-2-[(4-メチルフェニル)スルホニル]-1-[(4-メチルチオ)フェニル]-1-プロパン)
実施例8の感光性樹脂組成物を、撹拌・脱泡装置を用いてワニス濃度を均一にした後、スピンコーターを用いてシリコン基板上に塗布し、ホットプレートで100℃30分乾燥させ、膜厚5μm程度の感光性樹脂組成物の乾燥塗膜を得た。この乾燥膜上にL/S=3/3μm、7/7μmおよび9/9μmの細線パターン状のフォトマスクをそれぞれ載せ、マスク密着露光ステージ(リソテックジャパン)を用いて300mJのブロード光を露光した。その後ホットプレートで160℃1分のPEBを行った。これを1%Na2CO3水溶液にて現像し水でリンス後室温で乾燥させ、ポジ型パターン膜を得た。得られたポジ型パターン膜の顕微鏡写真図を図1に示す。また、段差(ラインの表面とスペース部分の表面の差)を表6に示す。
[ガラス転移温度の評価]
ポリアミック酸A-1、A-4、A-5、A-6の15質量%ワニス3gに対して光酸発生剤B-1(三宝化学研究所社製TS583、DNQ(ジアゾナフトキノン))を0.0675g添加し、実施例17~20の感光性樹脂組成物を得た。得られた感光性樹脂組成物をシリコンウエハ上にアプリケータで塗布し、ホットプレートで100℃10分加熱した後、さらに200℃30分熱処理して、硬化膜を作製した。この硬化膜をシリコンウエハ上から剥離し、ガラス転移温度(Tg)を測定した。TgはTA Instrument社製の動的粘弾性測定装置RSA-G2を用い、大気下、50℃から350℃、昇温速度10℃/min、周波数1Hzの条件のもと測定した。
Claims (12)
- (A)環状脂肪族骨格と芳香族骨格とを有する酸無水物と、ジアミンから得られるポリアミック酸と、
(B)光酸発生剤と、を含有することを特徴とするポジ型感光性樹脂組成物。 - 前記(B)光酸発生剤の配合量が、前記(A)ポリアミック酸100質量部に対して1~50質量部である請求項1記載のポジ型感光性樹脂組成物。
- ポジ型感光性樹脂組成物の塗膜に対し露光する露光工程と、
前記露光工程後に前記塗膜を加熱する加熱工程と、
前記加熱工程後に現像する現像工程と、を含むパターン膜の形成方法に使用することを特徴とする請求項1記載のポジ型感光性樹脂組成物。 - 請求項1~7のいずれか1項記載のポジ型感光性樹脂組成物を、フィルムに塗布、乾燥して得られる樹脂層を有することを特徴とするドライフィルム。
- 請求項1~7のいずれか1項記載のポジ型感光性樹脂組成物を硬化して得られることを特徴とする硬化物。
- 請求項8記載のドライフィルムの樹脂層を硬化して得られることを特徴とする硬化物。
- 請求項9記載の硬化物を有することを特徴とするプリント配線板。
- 請求項10記載の硬化物を有することを特徴とするプリント配線板。
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WO2023243199A1 (ja) * | 2022-06-14 | 2023-12-21 | Jsr株式会社 | 感光性樹脂組成物、パターンを有する樹脂膜、パターンを有する樹脂膜の製造方法、および半導体回路基板 |
WO2024100764A1 (ja) * | 2022-11-08 | 2024-05-16 | 株式会社レゾナック | 感光性樹脂組成物、硬化物、及び半導体素子 |
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