WO2010092824A1 - ポジ型感光性樹脂組成物、及びそれを用いた硬化膜、保護膜、絶縁膜、半導体装置及び表示装置 - Google Patents
ポジ型感光性樹脂組成物、及びそれを用いた硬化膜、保護膜、絶縁膜、半導体装置及び表示装置 Download PDFInfo
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- WO2010092824A1 WO2010092824A1 PCT/JP2010/000873 JP2010000873W WO2010092824A1 WO 2010092824 A1 WO2010092824 A1 WO 2010092824A1 JP 2010000873 W JP2010000873 W JP 2010000873W WO 2010092824 A1 WO2010092824 A1 WO 2010092824A1
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- photosensitive resin
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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
- G03F7/022—Quinonediazides
- G03F7/023—Macromolecular quinonediazides; Macromolecular additives, e.g. binders
- G03F7/0233—Macromolecular quinonediazides; Macromolecular additives, e.g. binders characterised by the polymeric binders or the macromolecular additives other than the macromolecular quinonediazides
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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
- G03F7/075—Silicon-containing compounds
-
- 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
- G03F7/075—Silicon-containing compounds
- G03F7/0755—Non-macromolecular compounds containing Si-O, Si-C or Si-N bonds
Definitions
- the present invention relates to a positive photosensitive resin composition, and a cured film, a protective film, an insulating film, a semiconductor device, and a display device using the same.
- polyimide has become increasingly important as a heat-resistant insulating material in electronic equipment.
- Polyimide has not only excellent heat resistance but also chemical resistance, radiation resistance, electrical insulation, excellent mechanical properties, etc., so it can be used for flexible printed circuit boards, tape automation bonding substrates, and semiconductors.
- Currently, it is widely used for various applications such as an element protective film and an interlayer insulating film of an integrated circuit.
- Polyimide is obtained by polymerizing a solvent-soluble precursor (polyamic acid) by subjecting diamine and tetracarboxylic dianhydride to an equimolar polyaddition reaction without solvent in a solvent such as N-methyl-2-pyrrolidone, and then dissolving the varnish in a solution. It can be produced relatively easily by cast film formation, drying, and heat dehydration ring closure reaction (imidation reaction). In addition, since the film purity is extremely high, it is suitable for semiconductor applications that hate residual halogens, metal ions, and the like that may cause deterioration of electrical characteristics. Further, it is advantageous in that it is easy to improve the physical properties using various available monomers and easily cope with the increasingly demanded characteristics in recent years.
- the chip As a protective coating material on the surface of a semiconductor chip, the chip is protected from curing shrinkage of a sealing material such as an epoxy resin, the chip is protected from thermal shock and rapid thermal expansion stress of the sealing material in the solder reflow process, on the chip
- a sealing material such as an epoxy resin
- the chip is protected from thermal shock and rapid thermal expansion stress of the sealing material in the solder reflow process, on the chip
- an inorganic passivation film is formed, prevention of cracks, prevention of soft errors due to ⁇ -ray shielding from trace amounts of uranium and thorium contained in the inorganic filler in the sealing material, interlayer insulation of multilayer wiring circuits, wiring by flattening
- heat-resistant polyimide is used for the purpose of preventing disconnection.
- the protective coating material is finely processed such as via-hole formation by plasma etching or alkali etching on the bonding pad.
- a dry method such as plasma etching generally provides high resolution, but is expensive in terms of equipment, so that wet etching using alkali or the like is simpler.
- microfabrication of polyimide films has been performed by forming a photoresist layer on the polyimide film and etching the exposed areas with hydrazine or alkali.
- conductive polyimide By using conductive polyimide, the microfabrication process of polyimide is greatly shortened, and the semiconductor manufacturing speed and the yield rate are expected to be improved.
- an alkali developing positive photosensitive polyimide in which a diazonaphthoquinone photosensitizer is dispersed in a polyamic acid film as a polyimide precursor has been studied.
- the carboxyl group in the polyamic acid has a low pKa value of 4 to 5
- the solubility of the polyamic acid is too high in the 2.38 wt% tetraammonium hydroxide aqueous solution usually used in the semiconductor manufacturing process. There is a problem that it is not suitable for fine processing.
- the polybenzoxazole film obtained by thermal ring closure reaction of polyhydroxyamide which is a polybenzoxazole precursor, not only has excellent microfabrication properties as described above, but also has heat resistance equivalent to polyimide and low water absorption superior to polyimide. It is excellent as a semiconductor protective coating material in that it has properties.
- the polybenzoxazole precursor contained in the positive photosensitive resin composition is subjected to dehydration and ring closure by adding a thermal history, there is a positive photosensitive resin composition in which the warpage of the semiconductor wafer is small.
- a material that is extremely useful in the industrial field but such a material is not known at present.
- An object of the present invention is to add a thermal history to a dehydrated ring-closing by adding a thermal history to a polyamide resin mainly composed of a polybenzoxazole precursor patterned by coating, exposure, and development on a substrate such as a semiconductor wafer.
- a positive photosensitive resin composition that can reduce the warpage of a substrate such as a semiconductor wafer, and a positive photosensitive resin composition that includes a polyamide resin whose main component is such a polybenzoxazole precursor resin are subjected to dehydration and ring closure.
- the object is to provide a cured film to be obtained, a protective film having such a cured film, an insulating film, a semiconductor device, and a display device.
- a positive photosensitive resin composition comprising a polyamide resin (A) and a photosensitive agent (B), wherein the polyamide resin comprises a repeating unit (A- 1) and a repeating unit (A-2) represented by the following general formula (2) and / or a repeating unit (A-3) represented by the general formula (3) Resin composition.
- A- 1 and Y 1 are organic groups, R 1 is any one of a hydrogen atom, a hydroxyl group, and —O—R 2 , and m is an integer of 0 to 8.
- R 1 is an organic group having 1 to 15 carbon atoms.
- R 2 is an organic group having 1 to 15 carbon atoms.
- X 2 is a structural unit represented by the following general formula (40)
- Y 2 is an organic group
- R 3 is any one of a hydrogen atom, a hydroxyl group, and —O—R 4 ; Is an integer of 0 to 8.
- R 4 is an organic group having 1 to 15 carbon atoms.
- X 3 is an organic group
- Y 3 is a structural unit represented by the following general formula (40).
- R 5 is any one of a hydrogen atom, a hydroxyl group, and —O—R 6 , p Is an integer of 0 to 8. When there are a plurality of R 5 s , they may be the same or different, and R 6 is an organic group having 1 to 15 carbon atoms.
- R 7 is a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms
- R 8 is a hydrocarbon group having 1 to 10 carbon atoms
- R 41 , R 42 , R 43 , R 44 are At least one of them is an aryl group, and the remainder is a hydrogen atom or an organic group having 1 to 30 carbon atoms, which may be the same or different
- a and b are mol%
- a is 5 to 95 mol%
- b is 95 to 5 mol%
- a + b is 100 mol%
- * is bonded to the NH group represented by the general formula (2) and / or the C ⁇ O group represented by the general formula (3).
- a and b Represents mol%, a is 5 to 95 mol%, b is 95 to 5 mol%, and a + b is 100 mol%, where * is an NH group represented by the general formula (2) and / or (Indicates binding to the C ⁇ O group represented by the general formula (3).)
- * is an NH group represented by the general formula (2) and / or (Indicates binding to the C ⁇ O group represented by the general formula (3).)
- * is an NH group represented by the general formula (2) and / or (Indicates binding to the C ⁇ O group represented by the general formula (3).
- X 2 is a structural unit represented by the following general formula (4), Y 2 is an organic group, R 3 is any one of a hydrogen atom, a hydroxyl group, and —O—R 4 , n Is an integer of 0 to 8. When there are a plurality of R 3 s , they may be the same or different. R 4 is an organic group having 1 to 15 carbon atoms.
- R 7 is a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms
- R 8 is a hydrocarbon group having 1 to 10 carbon atoms, which may be the same or different.
- a and b Represents mol%, a is 5 to 95 mol%, b is 95 to 5 mol%, and a + b is 100 mol%, where * is bonded to the NH group represented by the general formula (2) Indicates that.
- [5] The repeating unit (A-1) represented by the general formula (1), the repeating unit (A-2) represented by the general formula (2) and / or the repeating unit represented by the general formula (3) Any of [1] to [4], wherein the molar ratio of unit (A-3) ((A-1) / ⁇ (A-2) + (A-3) ⁇ ) is 0.05 to 0.95
- D represents —CH 2 —, —CH (CH 3 ) —, —C (CH 3 ) 3 —, —O—).
- s is an integer of 1 to 3
- R 9 is an alkyl group, alkoxy It represents one selected from a group, an acyloxy group, and a cycloalkyl group, and when there are a plurality of R 9 s , they may be the same or different.
- R 10 is 1 selected from an alkyl group, an alkyl ester group, an alkyl ether group, and a halogen atom.
- R 10 s when there are a plurality of R 10 s , they may be the same or different.
- Curing characterized by being composed of a cured product of the positive photosensitive resin composition according to any one of [1] to [7], having an elastic modulus at 25 ° C. of 1.5 GPa or less. film.
- a protective film comprising the cured film according to [8].
- An insulating film comprising the cured film according to [8].
- a semiconductor device comprising the cured film according to [8].
- a display device comprising the cured film according to [8].
- a positive photosensitive resin composition containing a polyamide resin whose main component is a polybenzoxazole precursor that is patterned on a substrate such as a semiconductor wafer by application, exposure, and development is added to a dehydration ring closure by adding a thermal history. Even in this case, it is possible to obtain a positive photosensitive resin composition that can reduce the warpage of a substrate such as a semiconductor wafer, a cured film thereof, a protective film having such a cured film, an insulating film, a semiconductor device, and a display device.
- FIG. 1 is a longitudinal sectional view showing an example of a semiconductor device.
- the upper side in FIG. 1 is “upper” and the lower side is “lower”.
- a semiconductor device 10 illustrated in FIG. 1 is a QFP (Quad Flat Package) type semiconductor package, and includes a semiconductor chip (semiconductor element) 20, a die pad 30 that supports the semiconductor chip 20 via an adhesive layer 60, and the semiconductor chip 20.
- a lead film 40 electrically connected to the semiconductor chip 20, and a mold part 50 for sealing the semiconductor chip 20.
- the die pad 30 is made of a metal substrate and functions as a support for supporting the semiconductor chip 20.
- the die pad 30 includes various metal materials such as copper (Cu), iron (Fe), nickel (Ni), and alloys thereof (for example, Cu-based alloys and iron-nickel-based alloys such as Fe-42Ni). Improves the stability of the Pd layer on the surface of the metal substrate composed of the metal substrate, the surface of the metal substrate plated with silver or nickel / lead (Ni—Pd), and the surface of the Ni—Pd plating For this purpose, those provided with a gold plating (gold flash) layer provided for the purpose are used.
- Au gold plating
- planar view shape of the die pad 30 usually corresponds to the planar view shape of the semiconductor chip 20 and is, for example, a square such as a square or a rectangle.
- a plurality of leads 40 are provided radially on the outer periphery of the die pad 30. An end portion of the lead 40 opposite to the die pad 30 protrudes (exposes) from the mold portion 50.
- the surface of the exposed portion of the lead 40 from the mold portion 50 may be subjected to surface treatment such as gold plating, tin plating, solder plating, or solder coating.
- surface treatment such as gold plating, tin plating, solder plating, or solder coating.
- the surface treatment of the lead 40 is not limited to the exposed portion from the mold portion 50, and may be performed on the entire lead 40.
- the lead 40 is made of a conductive material, and for example, the same material as that of the die pad 30 described above can be used.
- the semiconductor chip 20 is fixed (fixed) to the die pad 30 via an adhesive layer 60 formed of a cured product of a resin composition (liquid resin composition).
- the adhesive layer 60 has a function of connecting the die pad 30 and the semiconductor chip 20 and a function of transmitting (dissipating) heat generated when the semiconductor chip 20 is driven to the die pad 30 side.
- the adhesive layer 60 includes, for example, a metal powder such as silver powder, aluminum powder, and nickel powder, or ceramic powder such as silica powder, alumina powder, and titania powder as an filler, an epoxy resin, an acrylic compound, Those composed of a thermosetting resin such as polyimide resin are preferably used.
- the semiconductor chip 20 has an electrode pad 21 on its upper surface, and the electrode pad 21 and the lead 40 are electrically connected by a wire 22. Thereby, the semiconductor chip 20 and each lead 40 are electrically connected.
- the material of the wire 22 is not particularly limited, but the wire 22 can be composed of, for example, a gold (Au) wire or an aluminum (Al) wire.
- a protective film (chip coat film) 70 is formed on the semiconductor chip 20 so that the electrode pads 21 are exposed.
- This protective film 70 functions to protect the semiconductor chip 20 when the mold part 50 is formed by curing and shrinking, thermal shock in the solder reflow process for mounting the semiconductor chip 20 on the substrate, and rapid thermal expansion of the molding material. It has a function to protect from stress.
- the present invention is characterized by the structure of the protective film 70, and the protective film 70 is mainly composed of the positive photosensitive resin composition of the present invention. These positive photosensitive resin compositions will be described in detail later.
- the die pad 30, each member provided on the upper surface side of the die pad 30, and the inner portion of the lead 40 are sealed by the mold part 50.
- the outer end portion of the lead 40 protrudes from the mold portion 50.
- the mold part 50 can be made of various resin materials such as epoxy resin, for example.
- Such a semiconductor device 10 can be manufactured as follows, for example. First, a lead frame including a die pad (support) 30 and a plurality of leads (terminals) 40 is prepared.
- a semiconductor chip 20 provided with a protective film 70 patterned so as to expose the electrode pads 21 is prepared.
- the formation of the protective film 70 on the semiconductor chip 20 can be performed as follows, for example. That is, first, a liquid material (varnish) containing a polyamide resin and a photosensitive agent is supplied so as to cover almost the entire upper surface of the semiconductor chip 20. Next, by drying this liquid material, a film containing a polyamide resin and a photosensitive agent is formed on the upper surface of the semiconductor chip 20. Next, the film formed at a position corresponding to the electrode pad 21 is exposed and exposed, and then etched. Thereby, the film is patterned into a shape in which the electrode pad 21 is exposed. Subsequently, the polybenzoxazole precursor copolymer contained in the patterned film is subjected to a ring-closing reaction to obtain a polybenzoxazole copolymer, whereby the protective film 70 can be obtained.
- the average film thickness of the protective film 70 is preferably about 1 to 20 ⁇ m, and more preferably about 5 to 10 ⁇ m. Thereby, the function as a protective film mentioned above can be exhibited reliably.
- a constituent material of the adhesive layer 60 before curing is supplied onto the die pad 30 by using a discharge device such as a commercially available die bonder.
- the semiconductor chip 20 is placed and heated on the die pad 30 with the surface on which the protective film 70 is provided facing upward so that the constituent material of the adhesive layer 60 before curing is interposed. Thereby, the constituent material of the adhesive layer 60 before curing is cured, and the adhesive layer 60 composed of the cured product is formed. As a result, the semiconductor chip 20 is bonded onto the die pad (support) 30 via the adhesive layer 60.
- the conductive wire 22 is formed between the electrode pad 21 exposed from the protective film 70 and the lead 40 by wire bonding. Thereby, the electrode pad 21 and the lead 40 are electrically connected.
- the mold part 50 is formed by transfer molding or the like. Thereafter, a resin-fixed tie bar is punched out from the lead frame, and a trim and foam process is performed to manufacture the semiconductor device 10.
- the protective film 70 has a lower water absorption rate and can be patterned into a finer shape for the purpose of exhibiting the function as the protective film 70 described above. Therefore, what has more excellent translucency is desired.
- various studies have been made on a film composed of a polyamide resin whose main component is a polybenzoxazole precursor as the protective film (chip coat film) 70 for the purpose of obtaining a film having excellent characteristics. Yes.
- the present inventor paid attention to a film composed of a polyamide resin containing a polybenzoxazole precursor as a main component in this manner, and as a result of intensive studies, the resulting film has a low water absorption rate and high translucency.
- a polyamide resin having a polybenzoxazole precursor as a main component and having a rigid skeleton and a high linearity when the polyamide resin having the polybenzoxazole precursor as a main component is dehydrated and closed, It has been found that there is a problem that the warpage of a substrate such as a semiconductor wafer increases.
- the repeating unit (A-1) represented by the following general formula (1) the repeating unit (A-2) represented by the following general formula (2) and / or the repeating unit represented by the general formula (3)
- the present inventors have found that the above-mentioned problems can be solved by constituting a polyamide resin obtained by subjecting a polyamide resin having A-3) to a ring-closing reaction as a main material of a protective film. It came.
- R 1 is any one of a hydrogen atom, a hydroxyl group, and —O—R 2
- m is an integer of 0 to 8. In the case where there are a plurality of R 1 s) May be the same or different, and R 2 is an organic group having 1 to 15 carbon atoms.
- X 2 is a structural unit represented by the following general formula (40), Y 2 is an organic group, R 3 is any one of a hydrogen atom, a hydroxyl group, and —O—R 4 ; Is an integer of 0 to 8. When there are a plurality of R 3 s , they may be the same or different. R 4 is an organic group having 1 to 15 carbon atoms.
- R 5 is any one of a hydrogen atom, a hydroxyl group, and —O—R 6 , p Is an integer of 0 to 8. When there are a plurality of R 5 s , they may be the same or different, and R 6 is an organic group having 1 to 15 carbon atoms.
- R 7 is a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms
- R 8 is a hydrocarbon group having 1 to 10 carbon atoms
- R 41 , R 42 , R 43 , R 44 are At least one of them is an aryl group, and the remainder is a hydrogen atom or an organic group having 1 to 30 carbon atoms, which may be the same or different
- a and b are mol%
- a is 5 to 95 mol%
- b is 95 to 5 mol%
- a + b is 100 mol%
- * is bonded to the NH group represented by the general formula (2) and / or the C ⁇ O group represented by the general formula (3).
- the characteristics of the positive photosensitive resin composition of the present invention are represented by the following general formula (40) as a component used in obtaining the repeating unit represented by the general formula (2) and / or the general formula (3). It is in the point provided with such a skeleton. Thereby, the elastic modulus of the cured film of polyamide resin can be lowered.
- R 7 is a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms
- R 8 is a hydrocarbon group having 1 to 10 carbon atoms
- R 41 , R 42 , R 43 , R 44 are At least one of them is an aryl group, and the remainder is a hydrogen atom or an organic group having 1 to 30 carbon atoms, which may be the same or different
- a and b are mol%
- a is 5 to 95 mol%
- b is 95 to 5 mol%
- a + b is 100 mol%
- * is bonded to the NH group represented by the general formula (2) and / or the C ⁇ O group represented by the general formula (3).
- R 41 , R 42 , R 43 and R 44 may be an aryl group, and the rest may be the same as a hydrogen atom or an organic group having 1 to 30 carbon atoms. May be different.
- aryl group a phenyl group, a phenyl group having a substituent, and a naphthyl group are preferable, and a phenyl group is particularly preferable.
- the structural unit represented by the following general formula (40) may contain — [Si (R 41 ) (R 42 ) O] — and — [Si (R 43 ) (R 44 ) O] —. It may be a block structure or a random structure.
- a diamine having a siloxane skeleton and an aromatic ring as represented by the following general formula (4) may be used as the structural unit represented by the general formula (40).
- R 7 is a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms
- R 8 is a hydrocarbon group having 1 to 10 carbon atoms, which may be the same or different.
- a and b Represents mol%, a is 5 to 95 mol%, b is 95 to 5 mol%, and a + b is 100 mol%, where * is an NH group represented by the general formula (2) and / or (Indicates binding to the C ⁇ O group represented by the general formula (3).)
- the structural unit represented by the general formula (4) only needs to contain — [Si (R 7 ) 2 O] — and — [Si (Ph) 2 O] —, and may have a block structure or a random structure. But you can.
- the polyamide resin (A) according to the positive photosensitive resin composition of the present invention comprises a repeating unit (A-1) represented by the general formula (1) and a repeating unit (A-) represented by the general formula (2). 2) and / or the repeating unit (A-3) represented by the general formula (3).
- X 1 of the repeating unit (A-1) represented by the general formula (1) according to the positive photosensitive resin composition of the present invention is not particularly limited, and examples thereof include a benzene ring and a naphthalene ring.
- Heterocyclic compounds such as aromatic compounds, bisphenols, pyrroles, furans and the like can be mentioned, and more specifically, compounds represented by the following formula (7) can be preferably mentioned. These may be used alone or in combination of two or more.
- A represents —CH 2 —, —C (CH 3 ) 2 —, —CH (CH 3 ) —, —O—, —S—, —SO 2).
- R 11 represents one selected from an alkyl group, an alkyl ester group, and a halogen atom; each good .R 12 be the same or different is an alkyl group, an alkoxy group, an acyloxy group, if .R 13 is either cycloalkyl group is more, good .R 13 be the same or different is hydrogen
- u is an integer of 0 to 2
- v is an integer of 0 to 3.
- Particularly preferable examples in the formula (7) include those represented by the following formula (5).
- D represents —CH 2 —, —CH (CH 3 ) —, —C (CH 3 ) 3 —, —O—).
- s is an integer of 1 to 3
- R 9 is an alkyl group, alkoxy It represents one selected from a group, an acyloxy group, and a cycloalkyl group, and when there are a plurality of R 9 s , they may be the same or different.
- Y 1 of the repeating unit (A-1) represented by the general formula (1) according to the positive photosensitive resin composition of the present invention is an organic group, and examples thereof include those similar to X 1 described above.
- Aromatic compounds such as benzene ring and naphthalene ring, heterocyclic compounds such as bisphenols, pyrroles, pyridines and furans, siloxane compounds and the like, more specifically, represented by the following formula (8) A thing can be mentioned preferably. These may be used alone or in combination of two or more.
- B represents —CH 2 —, —C (CH 3 ) 3 —, —O—, —S—, —SO 2 —, —CO).
- R 16 to R 19 is an organic group.
- Particularly preferable examples in the formula (8) include those represented by the following formula (6), and by applying these, the heat resistance and moisture resistance of the cured film made of the positive photosensitive resin composition are improved. Can be improved.
- T is an integer of 0 to 2
- R 10 is 1 selected from an alkyl group, an alkyl ester group, an alkyl ether group, and a halogen atom.
- R 10 s when there are a plurality of R 10 s , they may be the same or different.
- Y 2 of the repeating unit (A-2) represented by the general formula (2) according to the positive photosensitive resin composition of the present invention is not particularly limited, and Y 1 in the general formula (1) The same can be mentioned. As shown in the general formula (2), 0 to 8 R 3 are bonded to Y 2 .
- X 3 of the repeating unit (A-3) represented by the general formula (3) according to the positive photosensitive resin composition of the present invention is not particularly limited, and X in the general formula (1) is not limited. 1 may be mentioned, and as shown by the general formula (3), 0 to 8 R 5 are bonded to X 3 .
- X 2 of the repeating unit (A-2) represented by the general formula (2) and / or Y 3 of the repeating unit (A-3) represented by the general formula (3) according to the positive photosensitive resin composition of the present invention has a structural unit represented by the following general formula (4).
- R 7 is a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms
- R 8 is a hydrocarbon group having 1 to 10 carbon atoms, which may be the same or different.
- a and b Represents mol%, a is 5 to 95 mol%, b is 95 to 5 mol%, and a + b is 100 mol%, where * is an NH group represented by the general formula (2) and / or (Indicates binding to the C ⁇ O group represented by the general formula (3).)
- the polyamide resin (A) according to the positive photosensitive resin composition of the present invention has a large number of siloxane bonds as described above, the elastic modulus of the cured film made of the polyamide resin after dehydration and ring closure can be lowered. The stress of the semiconductor device having a cured film can be reduced. Moreover, the fall of the solubility with respect to the structural component of positive type photosensitive resin composition which arises when only a siloxane bond is increased can be suppressed by introduce
- R 7 in the general formula (4) is a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms, preferably a methyl group, an ethyl group, an i-propyl group, an n-propyl group, or an n-butyl group. A methyl group and an ethyl group are particularly preferred.
- R 8 in the general formula (4) is a hydrocarbon group having 1 to 10 carbon atoms, preferably a methylene group, an ethylene group, an n-propylene group or an n-butylene group, particularly preferably a methylene group or an ethylene group. .
- R 8 as the functional group, both the effect of lowering the elastic modulus after dehydration and ring closure of the polyamide resin and the effect of improving the solubility of the positive photosensitive resin composition in the constituent components can be achieved.
- the molecular weight of the structural unit represented by the general formula (4) is preferably 400 to 4000, and particularly preferably 500 to 3000. By setting the molecular weight within the above range, it is possible to achieve both the effect of lowering the elastic modulus after dehydration and ring closure of the polyamide resin and the effect of improving the solubility of the positive photosensitive resin composition in the constituent components.
- the repeating unit (A-1) represented by the general formula (1), the repeating unit (A-2) represented by the general formula (2) and / or the repeating unit represented by the general formula (3) (A ⁇
- the molar ratio of (3) ((A-1) / ⁇ (A-2) + (A-3) ⁇ ) is preferably 0.05 to 0.95. Thereby, the balance between the elastic modulus and the solubility becomes good.
- the preservability of positive photosensitive resin composition can be improved.
- Examples of the group derived from an acid anhydride containing an aliphatic group or cyclic compound group having at least one carbon-carbon double bond or carbon-carbon triple bond after reacting with an amino group include, for example, the formula (9 ), A group represented by the formula (10), and the like. These may be used alone or in combination of two or more.
- a group selected by the following formula (11) is particularly preferable. Thereby, especially the preservability of a positive photosensitive resin composition can be improved.
- the method is not limited to the above method, and the terminal acid contained in the polyamide-based resin (A) is an aliphatic group or a cyclic compound having at least one carbon-carbon double bond or carbon-carbon triple bond unit.
- An amine derivative containing a group can also be used to cap as an amide.
- the polyamide resin (A) having A-3) may have a nitrogen-containing cyclic compound on at least one of the side chain and the other end of the polyamide resin.
- adhesiveness with the metal wiring (especially copper wiring) etc. of a positive photosensitive resin composition can be improved.
- the reason for this is that when one end of the polyamide resin (A) is an organic group having an unsaturated group, the resin reacts so that the cured film has excellent mechanical properties such as tensile elongation, the side chain and the other end. This is because when at least one of the terminals has a nitrogen-containing cyclic compound, the nitrogen-containing cyclic compound reacts with the metal wiring of copper and copper alloy, so that adhesion is excellent.
- the nitrogen-containing cyclic compound is not particularly limited, and examples thereof include 1- (5-1H-triazoyl) methylamino group, 3- (1H-pyrazoyl) amino group, and 4- (1H-pyrazoyl) amino.
- the compound selected by the formula (12) is preferable. Thereby, especially adhesiveness with the metal wiring of copper and a copper alloy can be improved more.
- the photosensitizer (B) according to the present invention is not particularly limited, and examples thereof include a photosensitive diazoquinone compound.
- Q in the formulas (13) to (16) is selected from a hydrogen atom and the formula (17).
- at least one of Q of each compound is represented by formula (17).
- the positive photosensitive resin composition of the present invention can be used in combination with a compound having a phenolic hydroxyl group for the purpose of improving a residue (scum) at the time of patterning after exposure and development.
- the compound having a phenolic hydroxyl group is not particularly limited, and examples thereof include those represented by the formula (18). These may be used alone or in combination of two or more.
- the addition amount of the compound having a phenolic hydroxyl group is not particularly limited, but the repeating unit (A-1) represented by the general formula (1) and the repeating unit (A) represented by the general formula (2) -2) and / or 1 to 30 parts by weight, more preferably 1 to 20 parts by weight, per 100 parts by weight of the repeating unit (A-3) represented by the general formula (3).
- the addition amount is within the above range, the occurrence of scum is further suppressed during development, and the sensitivity is improved by promoting the solubility of the exposed area.
- the positive photosensitive resin composition of the present invention may contain an acrylic, silicone, fluorine, vinyl or other surfactant, an additive such as a silane coupling agent or an antioxidant, if necessary.
- silane coupling agent examples include 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, p-styryltrimethoxysilane, 3-methacryloxy Propylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, N-2- (aminoethyl) -3-aminopropylmethyldimethoxysilane, N-2- (aminoethyl) -3-aminopropyltrimethoxysilane, N-2- (aminoethyl) -3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxy Run, 3-amino
- the silicon compound having an amino group is not particularly limited, and examples thereof include 3-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, and 3-aminopropyl. Examples thereof include methyldimethoxysilane, N- (2-aminoethyl) -3-aminopropyltriethoxysilane, and 3-aminopropyltriethoxysilane.
- the acid anhydride is not particularly limited, and examples thereof include maleic anhydride, chloromaleic anhydride, cyanomaleic anhydride, cytoconic acid, and phthalic anhydride. Moreover, in using, it can be used individually or in combination of 2 or more types.
- the acid dianhydride is not particularly limited.
- silane coupling agent obtained by reacting the silicon compound having an amino group with an acid dianhydride or an acid anhydride, the storability and development of the positive photosensitive resin composition, or after the heat treatment
- the positive photosensitive resin composition of the present invention comprises a repeating unit (A-1) represented by the general formula (1), Polyamide resin (A) having a repeating unit (A-2) represented by the general formula (2) and / or a repeating unit (A-3) represented by the general formula (3), a photosensitive agent (B), and others Are dissolved in a solvent and used in the form of a varnish.
- the solvent is not particularly limited, but N-methyl-2-pyrrolidone, ⁇ -butyrolactone, N, N-dimethylacetamide, dimethyl sulfoxide, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, propylene glycol monomethyl ether , Dipropylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, methyl lactate, ethyl lactate, butyl lactate, methyl-1,3-butylene glycol acetate, 1,3-butylene glycol-3-monomethyl ether, methyl pyruvate, pyruvate Examples thereof include ethyl and methyl-3-methoxypropionate, and these may be used alone or in combination of two or more.
- the positive photosensitive resin composition of the present invention is applied to an appropriate support (substrate), for example, a silicon wafer, a ceramic substrate, an aluminum substrate or the like.
- an appropriate support for example, a silicon wafer, a ceramic substrate, an aluminum substrate or the like.
- the application amount is such that the final film thickness after curing is 0.1 to 30 ⁇ m. If the film thickness is below the lower limit value, it will be difficult to fully function as a protective surface film of the semiconductor element. If the film thickness exceeds the upper limit value, it will be difficult to obtain a fine processing pattern. Takes a long time to reduce throughput.
- Examples of the coating method include spin coating using a spinner, spray coating using a spray coater, dipping, printing, roll coating, and the like.
- actinic radiation is applied to the desired pattern shape.
- actinic radiation X-rays, electron beams, ultraviolet rays, visible rays and the like can be used, but those having a wavelength of 200 to 500 nm are preferable.
- a relief pattern is obtained by dissolving and removing the irradiated portion with a developer.
- the developer include inorganic alkalis such as sodium hydroxide, potassium hydroxide, sodium carbonate, sodium silicate, sodium metasilicate, and aqueous ammonia, primary amines such as ethylamine and n-propylamine, diethylamine, di-n Secondary amines such as propylamine, tertiary amines such as triethylamine and methyldiethylamine, alcohol amines such as dimethylethanolamine and triethanolamine, quaternary ammonium such as tetramethylammonium hydroxide and tetraethylammonium hydroxide
- An aqueous solution of an alkali such as a salt and an aqueous solution to which an appropriate amount of a water-soluble organic solvent such as methanol or ethanol or a surfactant is added can be preferably used.
- methods such as sodium hydro
- the relief pattern formed by development is rinsed. Distilled water is used as the rinse liquid.
- heat treatment is performed to form an oxazole ring, an imide ring, or an oxazole ring and an imide ring, thereby obtaining a final pattern rich in heat resistance.
- the heat treatment temperature is preferably 180 ° C. to 380 ° C., more preferably 200 ° C. to 350 ° C.
- the heat treatment performed here is the heat treatment step described above.
- the cured film which is a cured product of the positive photosensitive resin composition of the present invention, is used not only for semiconductor devices such as semiconductor elements but also for display devices such as TFT liquid crystal and organic EL, interlayer insulating films for multilayer circuits, It is also useful as a cover coat for flexible copper-clad plates, solder resist films, and liquid crystal alignment films.
- Examples of semiconductor device applications include a passivation film formed by forming a cured film of the above-described positive photosensitive resin composition on a semiconductor element, and a cured film of the above-described positive photosensitive resin composition formed on the passivation film.
- a protective film such as a buffer coating film, an insulating film such as an interlayer insulating film formed by forming a cured film of the above-mentioned positive photosensitive resin composition on a circuit formed on a semiconductor element, Examples include an ⁇ -ray blocking film, a planarizing film, a protrusion (resin post), and a partition wall.
- Examples of display device applications include a protective film formed by forming a cured film of the above-described positive photosensitive resin composition on a display element, an insulating film or a planarizing film for TFT elements and color filters, MVA, and the like. Protrusions for a liquid crystal display device, partition walls for an organic EL element cathode, and the like.
- the usage method is based on forming the positive photosensitive resin composition layer patterned on the substrate on which the display element and the color filter are formed according to the semiconductor device application by the above method.
- High transparency is required for display device applications, especially for insulating films and flattening films. Transparency can be achieved by introducing a post-exposure step before curing the positive photosensitive resin composition layer. It is also possible to obtain a resin layer that is excellent in practical use, which is more preferable in practical use.
- each part of the semiconductor device of the present invention can be replaced with an arbitrary one that can exhibit the same function, or an arbitrary configuration can be added.
- Example 1 ⁇ Synthesis of polyamide resin and evaluation of polyamide resin>
- AH6FP hexafluoro-2,2-bis (3-amino-4-hydroxyphenyl) propane
- GBL ⁇ -butyrolactone
- 60 mL and 1.21 mL (15 mmol) of pyridine were added and dissolved, and sealed with a septum cap.
- 1.630 g (15 mmol) of trimethylsilyl chloride was added by a syringe, and the mixture was stirred at room temperature for 1 hour for silylation.
- the content of the silicone diamine component represented by the copolymer composition was 30 mol%.
- Polymerization was started at a monomer concentration of 20% by weight, and GBL was sequentially added to dilute to a monomer concentration of 13.7%. The mixture was stirred at room temperature for a total of 72 hours to obtain a uniform polyamide resin solution. This solution is appropriately diluted, precipitated by dripping in a large amount of water, repeatedly washed with water, and vacuum-dried at 100 ° C. for 12 hours to obtain repeating units represented by the following formulas (19) and (20). A polyamide resin powder was obtained.
- Intrinsic viscosity was measured using the obtained polyamide resin. The results are shown in Table 1.
- the polyamide resin powder obtained as described above was dissolved in GBL to obtain a varnish having a concentration of 20% by weight.
- the obtained varnish was applied to a glass plate and dried in an oven at 80 ° C. for 2 hours, and then a polyamide resin film having a thickness of 10 ⁇ m was obtained.
- the i-line transmittance, g-line transmittance, and cut-off wavelength of the obtained polyamide resin film were measured. The results are shown in Table 1.
- a polyamide resin film cast on Furukawa Circuit electrolytic copper foil (18 ⁇ m thickness, trade name F3-WS) was cast at 300 ° C. in vacuum for 1 hour.
- n and n represent mol%, m is 95 to 5 mol%, n is 5 to 95 mol%, and m + n is 100 mol%.
- Example 2 The synthesis of the polyamide resin and the same procedure as in Example 1 except that 1.098 g (3 mmol) of AH6FP in Example 1 was changed to 1.830 g (5 mmol) and 9.380 g (7 mmol) of silicone was changed to 6.700 g (5 mmol). The polyamide resin was evaluated.
- Example 3 In the same manner as in Example 1 except that 1.098 g (3 mmol) of AH6FP in Example 1 was changed to 2.562 g (7 mmol) and 9.380 g (7 mmol) of silicone was changed to 4.020 g (3 mmol), The polyamide resin was evaluated.
- each physical property value of the polyamide resin in each Example and Comparative Example was measured by the following method.
- the obtained polyamide resin was dissolved in GBL to prepare a 0.5 wt% polyamide resin solution, and measured at 30 ° C. using an Ostwald viscometer.
- ⁇ Glass transition temperature Tg>
- TA Instruments, “Q800 type” the temperature was increased to 5 ° C. after cooling to ⁇ 120 ° C. with a frequency of 10 Hz and liquid nitrogen by dynamic viscoelasticity measurement.
- the glass transition temperature of the polyamide resin film was determined from the peak temperature of the loss modulus when measured at / min.
- ⁇ Linear thermal expansion coefficient From the elongation of the test piece at a load of 0.5 g (per film thickness of 1 ⁇ m) and a temperature rising temperature of 5 ° C./minute by thermomechanical analysis using a thermomechanical analyzer (manufactured by Bruker AXS, “TMA4000”) The linear thermal expansion coefficient of the polyamide resin film (thickness 30 ⁇ m) was determined as an average value in the range of 100 to 200 ° C.
- ⁇ Cutoff wavelength> Using a UV-visible spectrophotometer (V-530) manufactured by JASCO Corporation, the visible / ultraviolet transmittance of the polyamide resin film (10 ⁇ m thick) was measured in the range of 200 nm to 900 nm. The wavelength (cutoff wavelength) at which the transmittance was 0.5% or less was used as an index of transparency. The shorter the cutoff wavelength, the better the transparency.
- V-530 UV-visible spectrophotometer
- thermobalance device (TG-DTA2000” manufactured by Bruker AXS Co., Ltd.), as a 5% weight loss temperature in nitrogen and air, (T d 5 (N 2 ) and T d 5 (Air) )
- the polyamide resin film of Example 1 exhibited a low elastic modulus (0.026 GPa) effective for preventing warpage of the semiconductor element. Moreover, the polyamide resin film of each Example had excellent results for each measured value.
- the polyamide resin film of each example was found to exhibit excellent low stress properties. This is presumably because a siloxane skeleton was introduced into the polyamide resin skeleton.
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Abstract
Description
[1]ポリアミド樹脂(A)と、感光剤(B)と、を、含むポジ型感光性樹脂組成物であって、該ポリアミド樹脂が、下記一般式(1)で示される反復単位(A-1)と、下記一般式(2)で示される反復単位(A-2)及び/又は一般式(3)で示される反復単位(A-3)と、を有することを特徴とするポジ型感光性樹脂組成物。
(式中、R7は水素原子または炭素数1~10の炭化水素基であり、R8は、炭素数1~10の炭化水素基であり、R41、R42、R43、R44のうち少なくとも1つはアリール基で、残りは水素原子または炭素数1~30の有機基で、それぞれ同一でも異なっていてもよい。aおよびbはモル%を示し、aは5~95モル%、bは95~5モル%であり、a+bは100モル%である。ここで、*は一般式(2)で示されるNH基及び/又は一般式(3)で示されるC=O基に結合することを示す。)
[2]前記一般式(40)で示される構造単位が、下記一般式(4)で示される請求項1に記載のポジ型感光性樹脂組成物。
[3]前記一般式(40)で示される構造単位の分子量が400~4000である、請求項1または2に記載のポジ型感光性樹脂組成物。
[4]前記ポリアミド樹脂が、一般式(2)で示される反復単位(A-2)を有する[2]または[3]に記載のポジ型感光性樹脂組成物。
[5]前記一般式(1)で示される反復単位(A-1)と、前記一般式(2)で示される反復単位(A-2)及び/又は前記一般式(3)で示される反復単位(A-3)のモル比((A-1)/{(A-2)+(A-3)})が0.05~0.95である、[1]乃至[4]いずれかに記載のポジ型感光性樹脂組成物。
[6]前記一般式(1)で示される構造単位中のX1が、下記式(5)の群より選ばれる少なくとも1種以上を含むものである、[1]乃至[4]のいずれかに記載のポジ型感光性樹脂組成物。
[7]前記一般式(1)で示される構造単位中のY1が、下記式(6)の群より選ばれる少なくとも1種以上を含むものである、[1]乃至[4]のいずれかに記載のポジ型感光性樹脂組成物。
[8][1]乃至[7]のいずれかに記載のポジ型感光性樹脂組成物の硬化物で構成されている、25℃における弾性率が1.5GPa以下であることを特徴とする硬化膜。
[9][8]に記載の硬化膜で構成されていることを特徴とする保護膜。
[10][8]に記載の硬化膜で構成されていることを特徴とする絶縁膜。
[11][8]に記載の硬化膜を有していることを特徴とする半導体装置。
[12][8]に記載の硬化膜を有していることを特徴とする表示装置。
このリード40のダイパッド30と反対側の端部は、モールド部50から突出(露出)している。
まず、ダイパッド(支持体)30と、複数のリード(端子)40とを備えるリードフレームを用意する。
その後、リードフレームから樹脂止めのタイバーを打ち抜き、トリムアンドフォーム工程を行い、半導体装置10が製造される。
一般式(2)で示される反復単位(A-2)及び/又は一般式(3)で示される反復単位(A-3)と、を有するポリアミド樹脂(A)、感光剤(B)およびその他の添加剤を溶剤に溶解し、ワニス状にして使用する。溶剤としては、特に限定されるわけではないが、N-メチル-2-ピロリドン、γ-ブチロラクトン、N,N-ジメチルアセトアミド、ジメチルスルホキシド、ジエチレングリコールジメチルエーテル、ジエチレングリコールジエチルエーテル、ジエチレングリコールジブチルエーテル、プロピレングリコールモノメチルエーテル、ジプロピレングリコールモノメチルエーテル、プロピレングリコールモノメチルエーテルアセテート、乳酸メチル、乳酸エチル、乳酸ブチル、メチル-1,3-ブチレングリコールアセテート、1,3-ブチレングリコール-3-モノメチルエーテル、ピルビン酸メチル、ピルビン酸エチル、メチル-3-メトキシプロピオネート等が挙げられ、単独でも2種類以上混合して用いてもよい。
まず、本発明のポジ型感光性樹脂組成物を適当な支持体(基板)、例えば、シリコンウエハー、セラミック基板、アルミ基板等に塗布する。塗布量は、半導体素子上に塗布する場合、硬化後の最終膜厚が0.1~30μmになるよう塗布する。膜厚が下限値を下回ると、半導体素子の保護表面膜としての機能を十分に発揮することが困難となり、上限値を越えると、微細な加工パターンを得ることが困難となるばかりでなく、加工に時間がかかりスループットが低下する。塗布方法としては、スピンナーを用いた回転塗布、スプレーコーターを用いた噴霧塗布、浸漬、印刷、ロールコーティング等がある。次に、60~130℃でプリベークして塗膜を乾燥後、所望のパターン形状に化学線を照射する。化学線としては、X線、電子線、紫外線、可視光線等が使用できるが、200~500nmの波長のものが好ましい。
加熱処理温度は、180℃~380℃が好ましく、より好ましくは200℃~350℃である。ここで行う加熱処理が前述した熱処理工程のことである。
本発明のポジ型感光性樹脂組成物の硬化物である硬化膜は、半導体素子等の半導体装置用途のみならず、TFT型液晶や有機EL等の表示体装置用途、多層回路の層間絶縁膜やフレキシブル銅張板のカバーコート、ソルダーレジスト膜や液晶配向膜としても有用である。
<ポリアミド樹脂の合成およびポリアミド樹脂の評価>
よく乾燥した撹拌機付密閉反応容器中、ヘキサフルオロ-2,2-ビス(3-アミノ-4-ヒドロキシフェニル)プロパン(以下AH6FPと称する)1.098g(3mmol)にγ-ブチロラクトン(以下GBLと称する)60mLおよびピリジン1.21mL(15mmol)を加えて溶解し、セプタムキャップでシールした。次にトリメチルシリルクロリド1.630g(15mmol)をシリンジで加えて室温で1時間撹拌してシリル化した。この溶液に、メチル基が部分的にフェニル基に置換されている両末端アミン変性ジメチルシロキサン(信越シリコーン社製、アミン当量:670g/mol、平均分子量1340、以下シリコーンと称する)を9.380g(7mmol)を加え、攪拌して均一にした後、ジフェニルエーテル-4,4'-ジカルボン酸ジクロリド(以下OBCと称する)2.951g(10mmol)を粉末のまま3~4回に分けて加えた。このときの共重合組成即ち[シリコーン]/([AH6FP]+[シリコーン])×100(mol%)で示されるシリコーンジアミン成分の含有率は30mol%であった。モノマー濃度は20重量%で重合を開始し、GBLを順次加えてモノマー濃度13.7%まで希釈した。室温にてトータル72時間攪拌して均一なポリアミド樹脂溶液を得た。この溶液を適当に希釈し、大量の水中に滴下して沈殿させ、水で洗浄を繰り返し、100℃で12時間真空乾燥して、下記式(19)及び(20)で表される反復単位を有するポリアミド樹脂の粉末を得た。
(i)得られたポリアミド樹脂を用いて、固有粘度を測定した。その結果を表1に示す。
(ii)得られたワニスを、ガラス板に塗布し、オーブン中、80℃で2時間乾燥した後、膜厚10μmのポリアミド樹脂膜を得た。得られたポリアミド樹脂膜のi線透過率、g線透過率、及びカットオフ波長を測定した。その結果を表1に示す。
(iii)また別途、上記のようにして得られたワニスを用い、古川サーキット電解銅箔(18μm厚み、商品名F3-WS)上にキャスト製膜したポリアミド樹脂膜を真空中300℃で1時間熱処理して脱水環化反応を行った。この際、ポリアミド樹脂膜/銅箔積層体の反りの有無を観察した。その結果を、表1に示す。
(iv)さらに、このポリアミド樹脂膜/銅箔積層体を塩化第二鉄水溶液に浸漬して、銅箔を溶解除去し、ポリアミド樹脂膜を得た。得られたポリアミド樹脂膜のガラス転移温度(Tg)、5%重量減少温度(窒素中、空気中)、線膨張係数、弾性率、破断伸び、破断強度を測定した。その結果を、表1に示す。
実施例1のAH6FP1.098g(3mmol)を1.830g(5mmol)に、シリコーン9.380g(7mmol)を6.700g(5mmol)にした以外は、実施例1と同様に、ポリアミド樹脂の合成およびポリアミド樹脂の評価を行った。
実施例1のAH6FP1.098g(3mmol)を2.562g(7mmol)に、シリコーン9.380g(7mmol)を4.020g(3mmol)にした以外は、実施例1と同様に、ポリアミド樹脂の合成およびポリアミド樹脂の評価を行った。
実施例1のAH6FP1.098g(3mmol)を2.562g(10mmol)に、シリコーン9.380g(7mmol)を0g(0mmol)にした以外は、実施例1と同様に、ポリアミド樹脂の合成およびポリアミド樹脂の評価を行った。
得られたポリアミド樹脂をGBLに溶解し、0.5重量%ポリアミド樹脂溶液を作製し、オストワルド粘度計を用いて30℃で測定した。
動的粘弾性測定装置(TAインスツルメント社製、「Q800型」)を用いて、動的粘弾性測定により、周波数10Hz、液体窒素にて-120℃に冷却してから昇温速度5℃/分で測定した際の損失弾性率のピーク温度から、ポリアミド樹脂膜(30μm厚)のガラス転移温度を求めた。
熱機械分析装置(ブルカーエイエックスエス社製、「TMA4000」)を用いて、熱機械分析により、荷重0.5g(膜厚1μm当り)、昇温温度5℃/分における試験片の伸びより、100~200℃の範囲での平均値としてポリアミド樹脂膜(30μm厚)の線熱膨張係数を求めた。
東洋ボールドウィン社製引張試験機(テンシロンUTM-2)を用いて、ポリアミド樹脂膜(30μm厚)の試験片(3mm×30mm)について引張試験(延伸速度:8mm/分)を実施し、応力―歪曲線の初期の勾配から25℃における弾性率を、フィルムが破断した時の伸び率から破断伸び(%)を求めた。また、試験片が破断したときの応力から破断強度を求めた。破断伸びが高いほどフィルムの靭性が高いことを意味する。
日本分光社製紫外可視分光光度計(V-530)を用い、ポリアミド樹脂膜(10μm厚)の可視・紫外線透過率を200nmから900nmの範囲で測定した。透過率が0.5%以下となる波長(カットオフ波長)を透明性の指標とした。カットオフ波長が短い程、透明性が良好であることを意味する。
日本分光社製紫外可視分光光度計(V-530)を用い、ポリアミド樹脂膜(10μm厚)のi線(365nm)およびg線(435nm)における光透過率を測定した。透過率が高い程、透明性が良好であることを意味する。
熱天秤装置(ブルカーエイエックスエス社製、「TG-DTA2000」)を用いて、窒素中と大気中の5%重量減少温度として、それぞれ、(Td 5(N2)とTd 5(Air)を求めた。
10cm×10cmの古川サーキット電解銅箔(18μm厚み、商品名F3-WS)上にキャスト製膜したポリアミド樹脂膜を真空中300℃で1時間熱処理して脱水環化反応を行った。このポリアミド樹脂膜(30μm厚)/銅箔積層体の四隅の持ち上がりを目視で観察し、反りの有無を観察した。
Claims (12)
- ポリアミド樹脂(A)と、
感光剤(B)と、
を、含むポジ型感光性樹脂組成物であって、
該ポリアミド樹脂が、下記一般式(1)で示される反復単位(A-1)と、
下記一般式(2)で示される反復単位(A-2)及び/又は一般式(3)で示される反復単位(A-3)と、
を有することを特徴とするポジ型感光性樹脂組成物。
- 前記一般式(40)で示される構造単位の分子量が400~4000である、請求項1または2に記載のポジ型感光性樹脂組成物。
- 前記ポリアミド樹脂が、一般式(2)で示される反復単位(A-2)を有する請求項2または3に記載のポジ型感光性樹脂組成物。
- 前記一般式(1)で示される反復単位(A-1)と、
前記一般式(2)で示される反復単位(A-2)及び/又は前記一般式(3)で示される反復単位(A-3)のモル比((A-1)/{(A-2)+(A-3)})が0.05~0.95である、請求項1乃至4いずれかに記載のポジ型感光性樹脂組成物。 - 請求項1乃至7いずれかに記載のポジ型感光性樹脂組成物の硬化物で構成されている、25℃における弾性率が1.5GPa以下であることを特徴とする硬化膜。
- 請求項8に記載の硬化膜で構成されていることを特徴とする保護膜。
- 請求項8に記載の硬化膜で構成されていることを特徴とする絶縁膜。
- 請求項8に記載の硬化膜を有していることを特徴とする半導体装置。
- 請求項8に記載の硬化膜を有していることを特徴とする表示装置。
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CN2010800077234A CN102317861A (zh) | 2009-02-13 | 2010-02-12 | 正型感光性树脂组合物、和使用它的固化膜、保护膜、绝缘膜、半导体装置以及显示装置 |
US13/201,232 US20110294066A1 (en) | 2009-02-13 | 2010-02-12 | Positive photosensitive resin composition, cured film using the same, protecting film, insulating film, semiconductor device, and display device |
SG2011057221A SG173608A1 (en) | 2009-02-13 | 2010-02-12 | Positive photosensitive resin composition, cured film using the same, protecting film, insulating film, semiconductor device, and display device |
EP10741104.3A EP2397902A4 (en) | 2009-02-13 | 2010-02-12 | POSITIVE PHOTOSENSITIVE RESIN COMPOSITION, CURABLE FILM, PROTECTIVE FILM, INSULATING FILM, SEMICONDUCTOR DEVICE, AND DISPLAY DEVICE |
JP2010550468A JPWO2010092824A1 (ja) | 2009-02-13 | 2010-02-12 | ポジ型感光性樹脂組成物、及びそれを用いた硬化膜、保護膜、絶縁膜、半導体装置及び表示装置 |
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EP (1) | EP2397902A4 (ja) |
JP (1) | JPWO2010092824A1 (ja) |
KR (1) | KR20110122135A (ja) |
CN (1) | CN102317861A (ja) |
SG (1) | SG173608A1 (ja) |
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JP2011114311A (ja) * | 2009-11-30 | 2011-06-09 | Asahi Kasei Electronics Co Ltd | 半導体装置及びその製造方法 |
JP2013097227A (ja) * | 2011-11-02 | 2013-05-20 | Sumitomo Bakelite Co Ltd | ポジ型感光性樹脂組成物、硬化膜、保護膜、絶縁膜、半導体装置、および表示装置 |
US8956790B2 (en) | 2012-12-24 | 2015-02-17 | Cheil Industries Inc. | Positive photosensitive resin composition, and organic insulator film for display device and display device fabricated using the same |
KR20170108949A (ko) | 2015-01-27 | 2017-09-27 | 도레이 카부시키가이샤 | 수지, 감광성 수지 조성물 및 그들을 사용한 전자 부품, 표시 장치 |
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CN111522201B (zh) * | 2020-06-12 | 2023-03-10 | 江苏三月科技股份有限公司 | 一种正型感光性树脂组合物及其制备的固化膜与电子元件 |
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Also Published As
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EP2397902A1 (en) | 2011-12-21 |
JPWO2010092824A1 (ja) | 2012-08-16 |
KR20110122135A (ko) | 2011-11-09 |
EP2397902A4 (en) | 2014-01-15 |
SG173608A1 (en) | 2011-09-29 |
US20110294066A1 (en) | 2011-12-01 |
CN102317861A (zh) | 2012-01-11 |
TW201035242A (en) | 2010-10-01 |
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