WO2006114902A1 - 接着シート、金属積層シート及びプリント配線板 - Google Patents
接着シート、金属積層シート及びプリント配線板 Download PDFInfo
- Publication number
- WO2006114902A1 WO2006114902A1 PCT/JP2005/012624 JP2005012624W WO2006114902A1 WO 2006114902 A1 WO2006114902 A1 WO 2006114902A1 JP 2005012624 W JP2005012624 W JP 2005012624W WO 2006114902 A1 WO2006114902 A1 WO 2006114902A1
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- WIPO (PCT)
- Prior art keywords
- film
- adhesive
- polyimide
- adhesive sheet
- temperature
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4626—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0183—Dielectric layers
- H05K2201/0195—Dielectric or adhesive layers comprising a plurality of layers, e.g. in a multilayer structure
-
- 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
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/386—Improvement of the adhesion between the insulating substrate and the metal by the use of an organic polymeric bonding layer, e.g. adhesive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
Definitions
- Adhesive sheet Adhesive sheet, metal laminate sheet, and printed wire-sheet
- the present invention relates to an adhesive sheet, a metal laminated sheet, and a printed wiring board. More specifically, the present invention relates to insulation in printed wiring boards used for electronic equipment, flexible printed circuit boards that are used for miniaturization and weight reduction of components.
- the present invention relates to an adhesive sheet used for forming a layer, a metal laminate in which a metal foil is laminated on the adhesive sheet, and a printed circuit board in which the metal laminate sheet is processed.
- prepreg When an adhesive sheet or an adhesive film is used to form an insulating layer in a printed wiring board or the like, a so-called prepreg in which a glass fiber cloth is impregnated with an uncured epoxy resin or the like has been used. A glass fiber fabric is also used instead of a glass fiber fabric. These prepregs have a thick cloth and cannot meet the demand for lighter and thinner fabrics in recent years.
- the insulating layer has a large dielectric loss tangent, such as non-uniformity of the insulating layer due to non-uniform flow and resin contamination. 'Has the problem of lack of reliability.
- thermoplastic polyimide resin Japanese Patent Laid-Open No. 2 0 00-1 4 3 9 8 1, Japanese Patent Laid-Open No. 2 0 00-1 4 4 0 9 2, Open 2 0 3-3 0 6 6 4 9).
- the present invention is excellent in flatness and homogeneity suitable as a base material for electronic parts, Also, an adhesive sheet using a polyimide film with excellent heat resistance with little warping and curling even when treated at high temperatures, a metal laminated sheet in which a metal foil is laminated on this adhesive sheet, and circuit processing of this metal laminated sheet The purpose is to provide a printed wiring board.
- a polyimide film having a curl degree at 300 ° C. of 10% or less an adhesive sheet, a metal laminate sheet, FPC (flexible printed wiring board), TAB
- FPC flexible printed wiring board
- TAB high-quality and uniform FPC (Flexible Printed Circuit Board), TAB tape, COF tape film, etc. can be obtained by using it as a substrate film such as tape and COF tape film. It was.
- this invention consists of the following structures.
- Adhesion characterized in that a polyimide film having a curl degree of 10% or less after heat treatment at 100 ° C. is used as a base film, and an adhesive layer is formed on at least one side of the base film. Sheet.
- polyimide film comprises a polyimide obtained by reacting an aromatic tetracarboxylic acid with an aromatic diamine.
- the above-mentioned 4 characterized in that it further has a biphenyltetracarboxylic acid residue as an aromatic tetracarboxylic acid residue, and further has a p-phenylenediamine residue as an aromatic diamine residue.
- Adhesive sheet characterized in that it further has a biphenyltetracarboxylic acid residue as an aromatic tetracarboxylic acid residue, and further has a p-phenylenediamine residue as an aromatic diamine residue.
- the polyimide has at least a biphenyltetracarboxylic acid residue as an aromatic tetracarboxylic acid residue and at least a phenyldiamine residue as an aromatic diamine residue.
- the above 1 characterized in that the adhesive constituting the adhesive layer is a thermosetting adhesive.
- a metal laminated sheet comprising a metal foil laminated on the adhesive layer of the adhesive sheet according to any one of 1 to 8 above.
- a printed wiring board obtained by removing a part of the metal foil of the metal laminated sheet according to 9 above.
- a printed wiring board comprising a plurality of the printed wiring boards described in 10 above.
- a printed wiring board comprising a semiconductor chip mounted on the printed wiring board according to 10 or 11 above.
- a semiconductor package comprising a semiconductor chip mounted on the printed wiring board according to 10 or 11 above.
- Fig. 1 is a schematic diagram showing a method for measuring the curl degree of a polyimide long film.
- (a) is a plan view
- (b) is a sectional view indicated by aa in (a) before hot air treatment
- (c) is indicated by aa in (a) after hot air treatment.
- (c) indicates the state in which the various sheets are left stationary when measuring the warpage of the various sheets.
- the hatching in (a) is performed to distinguish the region between the test piece 1 and the alumina ceramic plate 2.
- FIG. 2 is a schematic cross-sectional view showing the configuration of the test circuit board before lamination.
- symbol 3 indicates a test circuit board
- symbol 4 indicates an adhesive sheet.
- FIG. 3 is a schematic cross-sectional view showing the configuration of the test circuit board after lamination, in which the adhesive sheet is deformed.
- reference numeral 5 is a copper foil
- reference numeral 6 is a circuit side polymer film
- reference numeral 7 is an insulating layer width
- reference numeral 8 is an adhesive sheet polymer film
- reference numeral 9 is an adhesive
- reference numeral 10 is a film. Deformation, 1 1 indicates void, respectively.
- the adhesive sheet of the present invention comprises a base film and an adhesive layer formed on at least one side of the base film, and the base film has a curl degree of not more than 10% after 300 ° C heat treatment.
- the first feature is that it is made of a polyimide film.
- the curl degree at 300 ° C. of the polyimide film means the degree of deformation in the thickness direction with respect to the surface direction of the film after performing a predetermined heat treatment, and specifically, shown in FIG.
- 5 OmmX 5 Omm test piece 1 was treated with hot air at 300 ° C for 10 minutes, and then placed on a flat surface (alumina / ceramic plate 2) so that the test piece 1 was in a concave shape.
- the average value of the distance from each vertex to the plane is the curl amount (mm), and the center from each vertex of specimen 1 (on the diagonal of specimen 1) It is a value expressed as a percentage of curl (° / 0 ) with respect to the distance to the middle point (3 5. 3 6mm).
- Curl degree (%) 100 X (curl amount) / "35. 36
- the curl degree after 300 ° C. heat treatment of the polyimide film is 10% or less, more preferably 8% or less, and still more preferably 5% or less.
- the base film aromatic tetracarboxylic acids and aromatic With diamines What consists of a polyimide obtained by making it react is preferable.
- Polyimides include those having at least a pyromellitic acid residue as an aromatic tetracarboxylic acid residue and at least a diaminodiphenyl ether residue as an aromatic diamine residue, or an aromatic tetracarboxylic acid.
- Preferred are those having at least a biphenyltetracarboxylic acid residue as an acid residue and at least a phenylenediamine residue as an aromatic diamine residue, and having a pyromellitic acid residue as an aromatic tetracarboxylic acid residue.
- the polyimide may have other aromatic tetracarboxylic acid residues and other aromatic diamine residues other than those described above.
- the pyromellitic acid residue is a polyamic acid or a polyimidic acid obtained by reacting a functional derivative such as pyromellitic acid, its anhydride, or a halide thereof with an aromatic diamine.
- a functional derivative such as pyromellitic acid, its anhydride, or a halide thereof
- an aromatic diamine This is the group derived from pyromellitic acid in
- the diaminodiphenyl ether residue is a group derived from diaminodiphenyl ether in a polyamic acid or a polyimide obtained by reacting diaminodiphenyl ether or various derivatives thereof with an aromatic tetracarboxylic acid.
- the biphenyltetracarboxylic acid residue means a biphenyltetracarboxylic acid, an anhydride thereof, or a functional derivative such as a halide thereof, and a biphenyl in a polyamic acid or a polyimide obtained by a reaction with an aromatic diamine.
- the phenylenediamine residue is a polyamic acid obtained by a reaction of phenylenediamine or various derivatives thereof with an aromatic tetracarboxylic acid or a group derived from phenylenediamine in a polyimide.
- the other aromatic tetracarboxylic acid residue and the other aromatic diamine residue both represent the same meaning as described above.
- the above “reaction” is first performed with an aromatic diamine in a solvent.
- the aromatic tetracarboxylic acid is subjected to a ring-opening polyaddition reaction or the like to obtain an aromatic polyamic acid solution.
- high temperature heat treatment or dehydration condensation (imidation) is performed.
- Aromatic polyamidic acid is a generic term for the above aromatic tetracarboxylic acids (acids, anhydrides, functional derivatives, hereinafter also referred to as aromatic tetracarboxylic acids) and aromatic diamines (aromatic diamines, aromatic derivatives).
- aromatic diamine aromatic diamine
- the substantially equimolar amount is preferably reacted and polymerized in an inert organic solvent for 1 minute to several days at a polymerization temperature of 90 ° C. or less. It is manufactured by.
- the aromatic tetracarboxylic acid and the aromatic diamine may be added to the organic solvent as a mixture or as a solution, or the organic solvent may be added to the above mixture.
- the organic solvent may dissolve part or all of the polymerization component, and preferably dissolves the copolyamide acid polymer.
- Preferred solvents include N, N-dimethylformamide and N, N-dimethylacetamide.
- Other useful solvents of this type are N, N-jetylformamide and N, N-jetylacetamide.
- Other solvents that can be used include dimethyl sulfoxide, N-methyl-2-pyrrolidone, N-cyclohexyl-1-pyrrolidone, and the like. Solvents can be used alone, in combination with each other, or in combination with poor solvents such as benzene, benzobutryl, dioxane and the like.
- the amount of the solvent used is preferably in the range of 75 to 90% by mass of the aromatic polyamic acid solution. This is because this concentration range gives the optimum molecular weight.
- the aromatic tetracarboxylic acid component and the aromatic diamine component need not be used in absolute equimolar amounts. In order to adjust the molecular weight, the molar ratio of aromatic tetracarboxylic acid Z aromatic diamine is in the range of 0.90 to 1.10.
- the aromatic polyamic acid solution produced as described above contains 5 to 40% by mass, preferably 10 to 25% by mass of the polyamic acid polymer.
- diaminodiphenyl ether and phenylenediamine are suitable diamines.
- diaminodiphenyl ether include 4,4, -diaminodiphenyl ether (DADE), 3,3,1 diaminodiphenyl ether, 3,4, -diaminodiphenyl ether.
- DADE 4,4, -diaminodiphenyl ether
- phenylenediamine include p-phenylenediamine, o-phenylenediamine, and m-phenylenediamine, and ⁇ -phenylenediamine can be preferably used.
- phenol-diamines preferably p-phenylenediamine
- diaminodiphenyl ether preferably p-phenylenediamine
- other aromatic diamines may be appropriately selected and used.
- aromatic tetracarboxylic acids pyromellitic acids (pyromellitic acid, its dianhydride (PMDA) and their lower alcohol esters), biphenyltetracarboxylic acids (biphenyltetracarboxylic acid, Its dianhydrides (BMDA) and their lower alcohol esters are preferred.
- biphenyltetracarboxylic acids 3,3 ′, 4,4, -biphenyltetracarboxylic acids are preferred.
- biphenyltetracarboxylic acids preferably 3, 3, 4, 4′-biphenyltetracarboxylic acids
- pyromellitic acid preferably 3, 4, 4′-biphenyltetracarboxylic acids
- other aromatic tetracarboxylic acids may be appropriately selected and used.
- phenylenediamines are 50 to 100 mol% with respect to wholly aromatic diamines, and aromatic diamines other than phenylenediamines are 0 to 0 to fully aromatic diamines. It is preferable to use 0 to 50 mol% of diamines other than the former two with respect to the total aromatic diamines.
- Aromatic diamines other than those described above may be used in an amount of 0 to 50 mol% based on the total aromatic diamines. If these mole% ratios exceed this range, the balance as a heat-resistant polyimide film such as flexibility, rigidity, strength, elastic modulus water absorption, hygroscopic expansion coefficient, and elongation is lost, which is not preferable. .
- pyromellitic 50-1 00 mole benefits acids relative to the total aromatic Zokute tetracarboxylic acids 0/0, Biff enyl tetracarboxylic acid (preferably 3, 3 ', 4, 4, One Biff We sulfonyl tetracarboxylic acid anhydride May be used in an amount of 0 to 50 mol% with respect to the wholly aromatic tetracarboxylic acids, and aromatic tetracarboxylic acids other than the former two may be used in an amount of 0 to 50 mol% with respect to the wholly aromatic tetracarboxylic acids. If these mole% ratios exceed this range, the balance as a heat-resistant polyimide film such as flexibility, rigidity, strength, elongation, elasticity, water absorption, and hygroscopic expansion coefficient is not preferable. .
- aromatic diamines and aromatic tetracarboxylic acids are not specifically limited, For example, it is shown below.
- aromatic diamines other than those mentioned above include 5-amino-2- (p-aminophenyl) benzoxazole, 6_amino-2- (p-aminophenyl) benzoxazole, 5-amino-2- (m-aminophenol- Nole) Benzoxazonole, 6-Amino 2- (m-Aminophenyl) Benzoxazole, 4, 4 'mono-bis (3-aminophenoxy) Biphenyl, Bis [4 (3-Aminophenoxy) phenyl] Ketone, Bis [4- (3-Aminophenoxy) phenyl] Sulfide, Bis
- Some or all of the hydrogen atoms on the aromatic ring in the aromatic diamine are halogen atoms, alkyl groups or alkoxyl groups having 1 to 3 carbon atoms, cyano groups, or part of hydrogen atoms of alkyl groups or alkoxyl groups, or Examples thereof include aromatic diamines substituted with halogenated alkyl groups having 1 to 3 carbon atoms or alkoxyl groups, all of which are substituted with halogen atoms.
- aromatic tetracarboxylic acids other than those mentioned above include bisphenol A bis (trimellitic acid monoester anhydride), 2, 2-bis [4- (3,4-dicanoloxyphenoxy) fuel] propanoic acid anhydride. 3, 3 ,, 4, 4, monobenzophenone tetracarboxylic dianhydride, 3, 3, 4, 4, 4-diphenyl sulfonetetracarboxylic dianhydride, 1, 4, 5, 8-naphthalene Tetracarboxylic dianhydride, 2, 3, 6, 7-naphthalenetetracarboxylic dianhydride, 4, 4'-oxydiphthalic anhydride, 3, 3, 4, 4, 4, 4, -dimethyldiphenylsilane tetracarboxylic acid di Anhydride, 1, 2, 3, 4-Furantetracarboxylic dianhydride, 4, 4 '— Bis (3,4-Dicanolepoxyphenoxy) Diphenylpropanoic acid dianhydride, 4, 4, Mono
- a method for producing a polyimide film having a curl degree of 10% or less after heat treatment at 300 ° C. used in the present invention is not particularly limited, but as a preferred production example, a polyimide precursor film (Green film) Polyimide precursor film (Imide rate IM A on one side (8th side) and Imidization rate IM B on the other side (B side) satisfy the relationship of the following formula ( A green film) and then imidizing the polyimide precursor film (green film).
- the imidization rate of the green film is measured by the following method.
- ⁇ Measurement method of imidization ratio> Take a film to be measured with a size of 2 cm x 2 cm, place the surface to be measured in close contact with the ATR crystal, set it on an IR measurement device, measure the specific wavelength absorbance below, and measure the film according to the following formula. Get the surface imidization rate.
- the specific wavelength of 1 7 78 cm- 1 (near) is adopted, and the absorbance of the measurement surface at that wavelength is taken as 1778 .
- the specific wavelength of the aromatic ring of 1 4 7 8 cm near 1 is adopted, and the absorbance of the measurement surface at that wavelength is defined as i 478 .
- the measurement position is an arbitrary point in the longitudinal direction of the film, and is 2 points in the width direction (1/3 and 2/3 points of the width), and the measured value is the average of the two points.
- the method for producing the specific green film is not particularly limited. Examples of suitable examples include the following methods.
- the direction of volatilization of the solvent is limited to the surface in contact with air, so the imidization ratio of the surface in contact with air of the green film is in contact with the support. It tends to be smaller than the surface imidization rate.
- the difference in the imidization ratio between the front and back sides of the green film is within an allowable range. Dali
- the imidization rate of the solution increases when thermal energy is added more than necessary while the amount of solvent is large and the degree of freedom of the polyamic acid molecule is high.
- the amount of heat applied, the solvent volatilization rate, the difference in the amount of solvent on the front and back sides, etc. are applied to the drying conditions when a polyamic acid solution is coated on a support and dried to obtain a self-supporting green film. It is necessary to control the drying conditions while controlling the amount, and by this control, it is possible to obtain a green film in which the green film front and back surface imidization ratio and the difference are within a predetermined range.
- the difference in the imidization ratio between the front and back surfaces of these green films is preferably 5 or less, more preferably 4 or less, and even more preferably 3 or less. Furthermore, it is preferable to control these imidization ratios in the range of 1 to 15 on both sides. When the difference in imidization ratio between the front and back surfaces of the green film exceeds 5, the potential inside the film Strain remains and curls after heat treatment at 300 ° C., resulting in a polyimide long film unsuitable for commercialization.
- the imidization ratio of the front and back surfaces and the difference between them are determined by controlling the amount of residual solvent relative to the total mass of the green film after drying.
- a green film in the range of can be obtained.
- the residual solvent amount relative to the total mass of the green film after drying is preferred properly is 2 5-5 0 weight 0/0, more preferably is important to the 3 5-5 0 wt% is there.
- the residual solvent amount is lower than 25% by mass, the green film has a relatively high imidation ratio on one side and a difference in the imidization ratio between the front and back surfaces is small.
- the molecular weight decreases, the Darine film tends to become brittle.
- the self-supporting property is insufficient, and it is often difficult to convey the film.
- drying devices such as hot air, hot nitrogen, far infrared rays, and high frequency induction heating can be used.
- the following temperature control is required as drying conditions.
- Constant rate drying is a drying region where the surface of the coating consists of a free liquid surface and the volatilization of the solvent is dominated by mass transfer in the outside world. Under the drying conditions in which the coating surface is dried and solidified, and the solvent diffusion in the coating is rate-limiting, the physical property difference between the front and back is likely to appear.
- Such a preferable dry state varies depending on the type and thickness of the support, but in the temperature setting and the air flow setting, the ambient temperature above the coating film (green film) on the support (the coating film side) is usually set. Also dry the coating under conditions where the ambient temperature on the opposite side (opposite side of the coating) is 1 to 55 ° C higher.
- the direction is defined with the direction from the coating film to the support as the downward direction and the opposite as the upward direction.
- Such vertical description is made for the purpose of concisely expressing the position of the region of interest, and not for specifying the absolute direction of the coating film in actual production.
- the “atmosphere temperature on the paint film side” is the temperature in the region (usually the space) from directly above the paint film to the top 3 O mm above the paint film surface, and is 5 to 3 O mm away from the paint film. By measuring the temperature at the position with a thermocouple, etc., the ambient temperature on the coating surface can be obtained.
- “Atmosphere temperature on the opposite side” is the temperature in the region (often including the support and the lower part of the support 3 ⁇ 4r) directly below the coating (supporting part) and below the coating 30 mm.
- the ambient temperature on the opposite side can be determined by measuring the temperature at a position 5 to 3 O mm downward from the coating film with a thermocouple.
- the ambient temperature on the opposite side is lower than the ambient temperature on the coating surface side, or if the difference between the ambient temperature on the coating surface side and the ambient temperature on the opposite side is less than 1 ° C, the vicinity of the coating surface
- the film will be dried first to form a film like a “ ⁇ ”, and then the solvent to be evaporated from the vicinity of the support will evaporate, resulting in distortion of the internal structure of the film.
- the ambient temperature on the opposite side is higher than the ambient temperature on the coating surface side, and the temperature difference must be greater than 55 ° C. It is not desirable.
- the atmosphere temperature on the opposite side is higher by 5 to 55 ° C, more preferably by 10 to 50 ° C, more preferably 15 to 45 ° C. Increase ° C.
- the atmospheric temperature on the coating surface side is preferably 80 to 105 ° C, more preferably 90 to 105 ° C.
- the ambient temperature on the opposite side is preferably 85 to 105 ° C, more preferably 100 to 105 ° C.
- the setting of the atmospheric temperature as described above may be performed in all steps of drying the coating film, or may be performed in a part of the coating film drying process.
- the above-mentioned ambient temperature is set to the effective drying length, preferably 10 to 100%, more preferably 15 to 100%.
- the drying time is 10 to 90 minutes in total, preferably 15 to 45 minutes.
- the heating temperature is preferably 80 to 125 ° C., more preferably 85 to 105 ° C. from the viewpoint of preventing problems due to warpage, distortion, and the like.
- the green film that has undergone the drying step is then subjected to an imidization step, but may be either inline or offline.
- the green film When off-line is adopted, the green film can be removed at once. At that time, curling can be reduced by winding the green film around the tube so that the liner film is inside (support is outside).
- the “precursor film (green film)” is a film having a residual solvent amount of about 50% by mass or less, although it depends on the thickness and molecular weight. Specifically, it is a coating on a support.
- a film obtained by drying a membrane refers to a film that has been peeled off from a support and is heated to 50 ° C or higher. If the atmosphere to be peeled is already 50 ° C or higher, it means the film from immediately after peeling until it is heated to the peeling atmosphere temperature + 30 ° C or higher.
- a conventionally known imidization reaction can be appropriately used.
- a method in which an imidation reaction proceeds by using a poly (midacid) solution that does not contain a ring closure catalyst or a dehydrating agent and is subjected to heat treatment (so-called thermal ring closure method) or a ring closure catalyst and a polyamide acid solution
- thermal ring closure method a method in which a dehydrating agent is contained and an imidation reaction is performed by the action of the above ring-closing catalyst and the dehydrating agent
- the curl degree after heat treatment at 300 ° C. is 10
- the thermal ring closure method is preferred in order to obtain a long film of 7% or less!
- the heating maximum temperature of the thermal ring closure method is exemplified by 100 to 500 ° C, and preferably 200 to 4820 ° C. If the maximum heating temperature is lower than this range, it will be difficult to close the ring sufficiently, and if it is higher than this range, deterioration will progress and the film will become brittle.
- a more preferred embodiment is a two-step heat treatment in which the treatment is carried out at 1550 to 2500 ° C. for 3 to 20 minutes and then treated at 3500 to 500 ° C. for 3 to 20 minutes.
- the condition for partially proceeding with the imidization reaction is preferably a heat treatment at 100 to 200 ° C. for 3 to 20 minutes in order to sufficiently perform the imidization reaction.
- This condition is preferably a heat treatment for 3 to 20 minutes at 2 to 0 to 400 ° C.
- the drying process and the imidization process described above are carried out by holding both ends of the film with pin tenter clips. At that time, in order to maintain the uniformity of the film, it is desirable to make the tension in the width direction and the longitudinal direction of the film as uniform as possible.
- both ends of the film can be pressed with a brush, and the pin can pierce the film uniformly.
- the brush is preferably a fibrous material that is rigid and heat resistant, and a high-strength, high-modulus monofilament can be used.
- the timing for adding the ring closure catalyst to the polyamic acid solution is not particularly limited. It may be added in advance before the polymerization reaction for obtaining doic acid.
- Specific examples of the ring-closing catalyst include aliphatic tertiary amines such as trimethylamine and triethylamine, and bicyclic tertiary amines such as isoquinoline, pyridine and betapicoline. Among them, heterocyclic At least one amine selected from tertiary amines is preferred.
- the amount of the ring-closing catalyst per mole of polyamidic acid is not particularly limited, but is preferably 0.5 to 8 moles.
- the timing of adding the dehydrating agent to the polyamic acid solution is not particularly limited, and may be added in advance before the polymerization reaction for obtaining the polyamic acid.
- Specific examples of the dehydration method include fatty carboxylic acid anhydrides such as acetic anhydride, propionic anhydride and butyric anhydride, and aromatic carboxylic acid anhydrides such as benzoic anhydride. Among them, acetic anhydride Preference is given to benzoic anhydride or mixtures thereof.
- the amount of dehydrating agent used per mole of polyamic acid is not particularly limited, but is preferably 0.
- a gelation retarder such as acetylacetone ⁇ i may be used in combination.
- the precursor of the polyimide long film (green sheet, film) formed on the support is removed from the support before it is fully imidized. It may be peeled off or peeled after imidization.
- the thickness of the polyimide long film is not particularly limited, it is usually 1 to 150 ⁇ m, preferably 3 to 50 ⁇ m in consideration of use for an electronic substrate such as a base substrate for a printed wiring board to be described later. ⁇ . This thickness can be easily controlled by the coating amount when the polyamic acid solution is applied to the support and the concentration of the polyamic acid solution.
- the polyimide film as the substrate of the present invention it is preferable to give fine irregularities on the film surface by adding a lubricant to the polyimide to improve the sagability of the film.
- inorganic or organic fine particles having an average particle size of about 0.03 to 3 m can be used.
- specific examples include titanium oxide, alumina, silica, calcium carbonate, calcium phosphate, calcium hydrogen phosphate, pyro
- examples include calcium phosphate, magnesium oxide, calcium oxide, and clay minerals.
- the polyimide long film obtained by the above production method preferably has an absorption ratio.
- the A side is in the cage and the tube is rolled into the tube, it is possible to obtain a long polyimide film with a lower strength.
- the A surface means the surface with the larger absorption ratio
- the B surface means the surface with the smaller absorption ratio! /.
- the radius of curvature is preferably in the range of 3 Onm to 60 Omm. If the radius of curvature exceeds this range, the curlyness of the polyimide film may increase.
- the above-mentioned absorption ratio means the degree of orientation relative to the film surface of the imide ring surface of polyimide molecules from the film surface (or back surface, hereinafter ⁇ ! To a depth of about 3 ⁇ .
- polarization ATR measurement is performed using FT-IR (measurement device: manufactured by Digi 1 ab net, FT S-60 A / 8 96, etc.), and single reflection ATR adjustment is applied to goldengate M k II (SP EC AC Ltd.), diamond and I RE, enter elevation angle 45 °, it appears a peak (aromatic ring near 1480 cm- 1 in the case of performing measurement resolution in 4 cm- accumulation number 1 28 times condition film surface Nitsu have been
- the absorption coefficient (Kx, 11 ⁇ 2) in each direction in vibration is obtained and defined by the following: (where ⁇ is MD direction, Ky is TD direction, ⁇ ⁇ or thickness direction) The absorption coefficient is shown respectively.)
- the measurement position is an arbitrary point in the longitudinal direction of the film, and 2 points in the width direction (1/3 and 2/3 points of the width), and the measured value is the average of the two points.
- the winding tension is 10 ON or more, preferably 150 N or more and 500 N or less.
- the A surface is in the cage, and the radius of curvature is relatively 30-60 Omm, preferably 80-30 Omm.
- a method of increasing the winding tension and setting the winding tension to 10 ON or more can be adopted.
- a method of winding the green film so that the green film is inside (support is outside) can be adopted. Heat treatment is applied in the process and imidization process. At that time, if there are processing spots in the width direction of the film, there will be a difference in physical properties in the width direction of the film, which will cause curling.
- the present invention it is desirable to control the unevenness in the width direction of the ambient temperature in the dryer within a central temperature of ⁇ 5 ° C, preferably within ⁇ 3 ° C, and more preferably within ⁇ 2 ° C.
- the atmospheric temperature refers to a temperature measured with a thermocouple, a thermo-label, etc. at a position separated from the surface of the support by an equal distance of 5 mm to 3 O mm.
- the distance between the detection edge in the width direction is 5 en! It is preferable to be about ⁇ 10 cm.
- a known thermocouple such as alumel chromel may be used.
- the atmospheric temperature on the opposite side can be set higher by 1 to 55 ° C (preferably 5 to 55 ° C) than the atmospheric temperature on the coated surface side. In this case as well, it is necessary to set the temperature within the range of ⁇ 5 ° C from the center temperature of the temperature on each side of the support.
- the center temperature is the arithmetic average value of the Celsius temperature measured at each detection end, and the temperature measured at each detection end in the width direction perpendicular to the direction in which the rigid body travels is t 5 ° C.
- the range is a range calculated based on the numerical value of the central value.
- the polyimide long film produced under such conditions has excellent flatness at an extremely high temperature with a curl degree measured under the above-mentioned conditions (10% or less).
- the adhesive sheet of the present invention is basically composed of a polyimide having a residue of aromatic diamines and a residue of aromatic tetra force rubonic acids, and has a curl degree after treatment of 300 ° C. 3 ⁇ 4.
- a polyimide film (IF) of 10% or less is used as a base material, and an adhesive layer is formed on at least one side of the base film.
- the imide is preferably one having at least a pyromellitic acid residue and a diaminodiphenyl ether residue, or one having at least a biphenyltetracarboxylic acid residue and a phenylamine residue, Pyromellitic acid residue, viaenyl tetra
- the adhesive layer described above is preferably formed of an adhesive selected from a thermosetting adhesive and an ft plastic adhesive.
- the adhesive sheet of the present invention can also be used for forming an insulating layer between printed wiring boards.
- the thermosetting adhesive used in the present invention is not particularly limited as long as it is thermosetting and has excellent heat resistance and adhesiveness. It is preferable to be smaller than the tensile modulus of the material.
- the tensile modulus of elasticity of the adhesive base material The tensile modulus (ratio of tensile modulus) is preferably 0.1 to 0.5, more preferably 0.3 or less, and particularly preferably 0.1 or less.
- thermosetting adhesive epoxy-based, urethane-based, acrylic-based, silicone-based, polyester-based, imide-based, polyamide-based, and the like can be used. More specifically, for example, a resin mainly composed of a flexible resin such as polyamide resin and a hard material such as phenol and containing epoxy resin, imidazoles, and the like is exemplified.
- examples include a mixture of dimer acid-based polyamide resin, room temperature solid phenol, room temperature liquid epoxy, and the like, with appropriate softness, hardness, and adhesiveness.
- the semi-cured state can be easily controlled.
- the polyimide resin those having a weight average molecular weight of 50000 to 100000 are suitable. Since the cohesive strength of the amide ⁇ ⁇ mide resin changes depending on the carboxylic acid and the amine that are the raw materials of the resin, it is preferable to select the molecular weight of the phenol or epoxy resin, the chemical conversion point, etc. as appropriate. 7amide resin, polyester resin, acrylonitrile butadiene resin, polyimide resin, petital resin, etc. can be used instead. Of etc. Silicone-modified charge more preferred because also express flexibility.
- phenol resin and epoxy resin but also maleimide resin, resin, nor resin, and triazine resin can be used. Also blended with nitrile butadiene rubber It is also possible to copolymerize.
- thermosetting adhesive of the present invention is a clerk whose cured state is controlled to a semi-cured state, and a method for controlling the cured state is, for example, heating with hot air when the adhesive is applied to a substrate and dried. Power, such as heating with far-infrared rays and electron beam irradiation. In the control by heating, it is preferable to heat at 1 to 60 ° C. at 1 to 0 to 200 ° C., and to heat at 1 to 30 to 160 ° C. for 5 to 10 minutes. Furthermore, this is preferable.
- the conditions for controlling the curing state are preferably determined in consideration of the adhesive composition, curing mechanism, and curing speed.
- thermosetting adhesive of the present invention is used once in a semi-cured state.
- the semi-cured state is a solid phase state that can be softened or melted by heating and finally cured.
- the thermosetting adhesive according to the present invention basically includes a component that imparts flexibility and a component that imparts heat resistance so that a semi-hardened state can be maintained.
- thermoplastic adhesive used in the present invention is not particularly limited as long as it is thermoplastic or thermocompression-bonded and has excellent heat resistance and adhesiveness.
- the tensile elastic modulus of the adhesive is It is preferably smaller than the tensile elastic modulus of the substrate.
- the tensile elastic modulus of the adhesive / the tensile elastic modulus of the base material is preferably from 0.1 to 0.5, more preferably 0.3 or less, and particularly preferably 0.1 or less.
- thermoplastic polyimide polyamide
- polyamide resin wholly aromatic polyester, polyether imide, and polyamide resin
- thermoplastic adhesives in the present invention include heat resistance and fill
- an adhesive made of thermoplastic (thermocompression bonding) polyimide resin can be mentioned.
- Thermoplastic (thermocompression bonding) Polyimide resin may be any thermoplastic polyimide resin that can be thermocompression bonded at a temperature of about 230 to 400 ° C. As such a thermocompression-bondable polyimide, preferably as a diamine,
- a P B 1,3 one bis (3-aminophenoxybenzene),
- ODP S 3, 3, 4, 4, 4-diphenenoleethenoretetracarboxylic dianhydride
- B PDA 3, 3 ,, 4, 4 ′ monobiphenyl tetracarboxylic dianhydride
- a-B PD A 2, 3, 3, 4, 4-biphenyl tetracarboxylic dianhydride
- Polyimide obtained from at least one kind of tetracarboxylic dianhydride selected from the above can be used. These can be used alone or in combination of two or more. Further, other diamines or tetracarboxylic acid anhydrides exemplified above can be used in combination within the range not exceeding 50 mol% of each of diamines and tetracarboxylic acid anhydrides.
- a polyimide obtained from 1,3-bis (4-aminophenoxybenzene) and 2,3,3 ', 4, biphenyltetracarboxylic dianhydride preferably 1,3- Polyimide obtained from bis (4-aminophenoxybenzene) and pyromellitic dianhydride, 1,3-bis (4-aminophenoxy) 1,2,2-dimethylpropane and 4,4'-oxydiphthalic acid
- the reaction molar ratio of the diamine component and the tetracarboxylic dianhydride is usually in the range of 0.75 to 1.25 mol of the tetracarboxylic dianhydride component with respect to 1 mol of the diamine component. Preferably it is the range of 0.8-1.2 mol.
- a dicarboxylic acid anhydride may be added for the purpose of sealing the polymer end of the thermoplastic polyimide related to the thermoplastic polyimide layer as the thermoplastic adhesive.
- the dicarboxylic acid anhydrides used are phthalic anhydride, 2,3-benzophenone dicarboxylic acid anhydride, 3,4-benzophenone dicarboxylic acid anhydride, 2,3-dicanolevoxyphenol Norephenioleate / Lean anhydride, 2, 3-biphenylenocarboxylic acid anhydride, 3, 4-biphenyldicarboxylic acid anhydride, 2, 3-dicarboxenylenoresoleic anhydride, 3, 4 — Dicanole oxyphenol sulfonic sulfone anhydride, 2, 3-dicarboxyphenol phenol sulno anhydride, 1, 2-naphthalenedicarbonic anhydride, 2, 3-naphthalenedicarboxylic anhydride 1,8-naphthalened
- dicarboxylic acid anhydrides may be substituted with groups that are not reactive with amines or dicarboxylic acid anhydrides.
- the addition amount of the dicarboxylic acid anhydride is usually in the range of 0.001 to 0.5 mol with respect to 100 mol of the total amount of the specific diamine and tetracarboxylic dianhydride as the main raw materials. Preferably, it is in the range of 0.005 to 0.25 mol.
- a monoamine may be added for the purpose of sealing the polymer terminal of the thermoplastic polyimide.
- monoamines used include aniline, o-toluidine, m-toluidine, p-toluidine, 2,3-xylidine, and 2,4-xylidine.
- monoamines may be used alone or in combination of two or more.
- the amount of monoamine added is usually in the range of 0.001 to 0.5 mol with respect to the total of 100 mol of the specific diamine and tetracarboxylic dianhydride as the main raw materials. Preferably, it is in the range of 0.05 to 0.25 mol.
- a polyamide imide resin, a polyether imide resin, a polyester imide resin, or the like can be used alone or in appropriate combination as long as the advantages of the present invention are not impaired.
- thermosetting adhesive such as an epoxy-based cyanate-based adhesive may be used in combination with the thermoplastic adhesive of the present invention.
- the proportion of this thermosetting adhesive is at most 40% by mass with respect to the total mass of the adhesive composition constituting the adhesive layer.
- thermoplastic polyimide resin comprises the above components, and optionally other tetracarboxylic dianhydrides and other diamines in an organic solvent at a temperature of about 100 ° C. or less, particularly 20 to It can be produced by reacting at a temperature of 60 ° C. to obtain a polyamic acid solution, and using this polyamic acid solution as a dope solution.
- the polyamic acid solution produced as described above is heated to 150 to 250 ° C, or an imidizing agent is added to 150 ° C or less, particularly 15 to After reacting at a temperature of 50 ° C. to imide cyclization, the solvent is evaporated, or precipitated in a poor solvent to form a powder, and then the powder is dissolved in an organic solution to form a thermocompression-bonding polyimide resin.
- An organic solvent solution can be obtained.
- the amount of diamine (as the number of moles of amino groups) used in the organic solvent is the total number of moles of acid anhydride (tetraacid dianhydride and dicarboxylic acid).
- Ratio of the anhydride to the total moles of acid anhydride groups) preferably from 0.92 to: L.1, in particular from 0.98 to: L.1, in particular from 0.99 to 1
- a ratio in which the amount of dicarboxylic acid anhydride used is preferably not more than 0.05, particularly not more than 0.02, in terms of the ratio of tetracarboxylic dianhydride to the number of moles of acid anhydride groups. It is preferable to react these components.
- the molecular weight of the resulting polyamic acid and the thermoplastic polyimide obtained by imidizing the polyamic acid are small, and flexible metal foil Reduces the adhesive strength of the laminate.
- phosphorus stabilizers such as triphenyl phosphite and triphenyl phosphate are added to the solid content (polymer 1) concentration during polymerization of polyamic acid. It can be added in the range of ⁇ 1% by mass.
- a basic organic compound catalyst can be added to the dope solution for the purpose of promoting imidization.
- Imidazoru 2-I 'imidazole, 1, 2-dimethylimidazole, 2-Hue Nino 0 les imidazole and the polyamide acid. 0 5 to 1 0 weight 0/0, especially 0. 1-2 wt% Can be used in proportions. These are relatively low temperatures Used to avoid insufficient imidization to form a polyimide film.
- an organic aluminum compound, an inorganic aluminum compound, or an organic tin compound may be added to the thermocompression bonding polyimide raw material dope.
- aluminum hydroxide, aluminum triacetylacetonate or the like can be added as aluminum metal to polyamic acid in an amount of 1 ppm or more, particularly 1 to 100 ppm.
- the organic solvent used for the production of the polyamic acid is N-methyl-2-pyrrolidone, N, N-dimethylformamide for both high heat resistant polyimide and thermocompression bonding polyimide.
- These organic solvents may be used alone or in combination of two or more.
- plasma treatment, corona treatment, and alkali treatment on the polyimide film surface before applying the adhesive is a preferable method for increasing the adhesive force, and such plasma is an inert gas plasma and is inert.
- Nitrogen gas, Ne, Ar, Kr, and Xe are used as the gas.
- an inert gas may be introduced into the plasma generator to generate plasma.
- the time required for the plasma treatment is not particularly limited, and is usually 1 second to 30 minutes, preferably 10 seconds to 10 minutes.
- Frequency is usually 13.5 6 MHz
- output is usually 50 W to 100 0 W
- gas pressure is usually 0.
- temperature is usually 20 ° C to It is 2500 ° C, preferably 20 ° C to 180 ° C. If the output is too high, the surface of the base film may be cracked. If the gas pressure is too high, the smoothness of the substrate film surface may be reduced.
- an adhesive layer is formed on the surface of the polyimide film subjected to the surface treatment.
- the method is not limited, and an adhesive is applied to the polyimide film surface and dried to form an adhesive layer.
- Polyimide film by forming an adhesive layer in advance on the release sheet or film and pasting or transferring it to the polyimide film surface.
- An example is a method of forming an adhesive layer on the surface.
- the adhesive sheet thus obtained can be used as a metal laminated sheet in which a metal foil is laminated on the adhesive layer of the above-mentioned adhesive sheet, for example, a die bonding tape or a lead-on chip film.
- the metal foil layer is formed by stacking a metal foil on an adhesive layer formed on a polyimide film surface with or without plasma treatment, and using pressure, heat, or the like.
- Metals as metal foil include, for example, silver, copper, gold, platinum, rhodium, nickel, aluminum, iron, chromium, zinc, tin, brass, bronze, bronze, monel, tin-lead solder, tin copper solder, Tin silver solder or the like alone or an alloy thereof is used, but using copper is a preferred embodiment in terms of the balance between performance and economy.
- the thickness of the metal foil layer is preferably 1 to 1 75 zm, more preferably 3 to 50 / zm.
- the thickness of the metal foil layer is preferably 50 to 300 ⁇ m.
- the surface roughness of the polyimide film on which this metal foil layer is laminated via the adhesive layer is not particularly limited, but the centerline average roughness in JISB 0 60 1 (Definition and display of surface roughness) (Hereinafter referred to as R a) and 10-point average roughness (hereinafter referred to as R z) are values of 0.1 ⁇ m or less for R a and 1.0 ⁇ m for R z. What is m or less is preferable.
- the metal laminated sheet which is a composite of the polyimide film and the metal foil obtained by the above method, be further heat-treated at 20 to 35 ° C.
- This heat treatment is preferably 220 to 330 ° C, more preferably 240 to 310 ° C.
- the heat treatment reduces the strain of the base film and the strain generated in the manufacturing process of the metal laminated sheet, and can more effectively express the effects of the present invention. And reliability can be improved. If the temperature is lower than 200 ° C., the effect of relaxing the strain becomes small. Conversely, if the temperature exceeds 35 ° C., the polyimide film of the base material is deteriorated, which is not preferable.
- the metal laminate sheet of the present invention thus obtained can be used as a printed wiring board by forming a circuit pattern by removing unnecessary metal foil by etching.
- a plurality of printed wiring boards may be stacked to form a multilayer printed wiring board.
- a photoresist is applied to a conductive metal foil layer or a post-added metal thick film layer formed on the conductive metal foil layer, if necessary, and dried, followed by exposure, development, etching, and photoresist.
- a wiring circuit pattern is formed by the peeling process, and solder resist coating, curing, and electroless tinning are performed as necessary to obtain a flexible printed wiring board, and further multilayered to obtain a multilayer printed wiring board. be able to.
- the metal thick film layer means a metal layer formed by an electro plating method, a thick electroless plating method, a fired thick film method, or the like.
- it refers to a metal layer formed by an electroplating method used for double-sided through hole processing, via hole processing, via filling processing, and the like.
- TAB tapes with flying leads When manufacturing so-called TAB tapes with flying leads, pre-punching an adhesive sheet that has been coated with adhesive in advance, secures device holes, and then laminates with copper foil.
- the conductor pattern containing can be formed.
- an inorganic coating such as a single metal or a metal oxide may be formed on the surface of the metal (foil) layer or a post-added metal thick film layer formed thereon as necessary.
- an inorganic coating such as a single metal or a metal oxide may be formed on the surface of the metal foil layer or the post-added metal thick film layer formed on the metal foil layer, if necessary, is treated with a force coupling agent (aminosilane, epoxysilane, etc.), sandplast treatment, holing treatment, corona treatment, plasma. You may use for a process, an etching process, etc.
- a force coupling agent aminosilane, epoxysilane, etc.
- sandplast treatment holing treatment
- corona treatment corona treatment
- the adhesive sheet using the polyimide film having the specific physical properties of the present invention as a base material, the metal laminated sheet, and the printed wiring board are excellent in flatness, for example, when processed into a printed wiring board or the like. Even if there is no warpage or distortion, not only is the flatness maintaining property excellent, but also the adhesion of the metal foil layer by the flatness maintaining property is excellent.
- Measurement was performed using a micrometer (Finereuf, Millitron (registered trademark) 1 245 D).
- Fig. 1 (C) place a 5 Omm x 5 Omm Finolem test piece so that it is concave on the plane, and the distance from each vertex of the test piece to the plane (h 1, h 2, h 3, h 4: Unit mm) is the warpage amount (mm), and is a value expressed as a percentage (%) of the warpage amount with respect to the distance (35. 36mm) from each vertex to the center of the specimen. Specifically, it is calculated by the following formula.
- Warpage (mm) (h l + h 2 + h 3 + h 4) 4
- Samples should be sampled from two points in the width direction and length direction of the polyimide film or sheet (in principle, from the points of width 1Z3 and 2-3), if not possible, from the center as much as possible Take a total of 4 points and express the average value. Abbreviations of compounds used in Examples and the like are described below.
- TMHQ P-phenylene bis (trimellitic acid monoester anhydride)
- ODA 4, 4, monodiaminodiphenyl ether
- a A Acetic anhydride
- the abbreviation GF stands for polyimide precursor film (green film), and the abbreviation IF stands for polyimide film.
- a container equipped with a nitrogen inlet tube, a thermometer, and a stirring rod was purged with nitrogen, and then ODA was added.
- ODA was added.
- DMAC is added and completely dissolved
- PMDA is added
- ODA and PMDA as monomers are polymerized in DMAC at a mole ratio of 1 Z 1, resulting in a monomer charge concentration of 15% by mass.
- the mixture was stirred at 25 ° C. for 5 hours to obtain a brown viscous polyamidic acid solution.
- Each zone has three rows of slit-shaped air outlets above and below the film, the hot air temperature between each air outlet is plus or minus 1.5 ° C, and the air volume difference can be controlled within the range of plus 3%. It is set as follows.
- the width direction is controlled to be within ⁇ 1 ° C for a width equivalent to 1.2 times the effective film width.
- the setting of the drying oven is as follows. In the drying conditions, the temperature is 3 Omm above and below the film.
- the air volume is the total of the air volume from the outlets of each zone.
- the air volume was changed within the above range.
- the surface of the coating reached the dry touch shortly after entering the fourth zone, and since then, the drying has progressed in a decelerating manner.
- the lower temperature and air volume are set higher than the upper one to promote the diffusion of the solvent in the coating film.
- the polyamido acid film (GF) that became self-supporting after drying was peeled from the polyester film to obtain each GF, that is, Production Example 1, Production Example 2, and Production Example 3.
- the values of IIM A — IM B I of these GFs were 0.8, 1.2, and 3.9, respectively.
- Each of the obtained GFs was continuously purged with nitrogen while holding both ends with a pin tenter.
- the first stage is heated at 1 80 ° C for 5 minutes, the heating rate is 4 ° C nosec, and the second stage is heated at 400 ° C for 5 minutes.
- the imidation reaction was carried out.
- each IF (polyimide film), 1 Production Example 1, IF Production Example 2, and IF Production Example 3 were obtained by cooling to room temperature in 5 minutes.
- a brush made of an aromatic polyamide monofilament strand was provided in contact with both ends of the film so that both ends of the film pierced the pin tenter pins uniformly.
- the thickness and curl degree of each IF obtained were 1 5/1111, 2.8% in 1 Production Example 1 and 1 5.1 ⁇ , 4.1% in 1 Production Example 2 and 1 5 in 1 Production Example 3. // 111, 7.5% I got it.
- PMDA B PDA is used as the aromatic tetracarboxylic dianhydride component
- ODA and P_PDA are used as the diamine component
- four types of monomers are PMDA / B PD A / ODA / P—PDA.
- Polymerization was carried out in DMF at a ratio of 1 / 0.5 to prepare a DMF solution of polyamic acid so that the monomer charge concentration was 16% by mass.
- the obtained polyamic acid solution was coated on stainless benolet (gap between squeegee / belt is 400 ⁇ ) and dried in the same manner as in Production 1-3.
- the polyamido acid film which became self-supporting after drying was peeled off from the stainless steel belt to obtain each green fill having a thickness of 49.5 ⁇ m, that is, Production Examples 4 to 6.
- the values of IIM A — IM B I of each GF were 1.4, 4.2, and 4.8, respectively.
- the obtained GF was placed in a continuous heat treatment furnace purged with nitrogen, and the first stage was heated at 180 ° C for 3 minutes and the heating rate was 4 ° CZ seconds. Two-stage heating was performed at 2 ° C for 2 minutes to proceed with the imidization reaction. Then, by cooling to room temperature in 5 minutes, each IF (Polyimide film) with a thickness of 25 / zm that exhibits a brown color, IF Production Example 4, IF Production Example 5, and IF Production Example 6 were obtained. .
- the thickness and curl degree of each IF obtained were 15 / m, 4.8% in IF production example 4, 15.1 m N 7.8% in IF production example 5, and 1 5 in IF production example 6. / m, 9.5%.
- Zone 1 temperature 1 1 0 ° C both top and bottom
- the length of each zone is the same, and the total drying time is 9 minutes.
- the air volume is the total of the air volume from the outlets of each zone.
- Production Example 7, Production Example 8, and Production Example 9 the air volume was changed within the above range.
- the surface of the coating film reaches a dry-to-touch state at the center of the second zone, and thereafter drying at a reduced rate is performed.
- the polyamic acid film that became self-supporting after drying was peeled off from the stainless steel belt to obtain three types of GF, ie, Production Example 7, Production Example 8, and Production Example 9.
- the values of IIM A — IM B I of each GF were 5.2, 8.1, and 12.7, respectively.
- Each GF obtained was passed through a continuous heat treatment furnace that was purged with nitrogen while holding both ends with a pin tenter.
- the first stage was at 180 ° C for 5 minutes, and the heating rate was 4 ° C / sec.
- the temperature was raised, and the second stage was heated at 400 ° C for 5 minutes under the condition of 5 minutes to proceed with the imidization reaction.
- it cooled to room temperature in 5 minutes, and obtained each IF (polyimide film) which exhibits brown, IF manufacture example 7, IF manufacture example 8, and IF manufacture example 9.
- the thickness and curl degree of each IF obtained were 15 m, 10.8% in IF Production Example 7, 1 5.
- a vessel equipped with a nitrogen inlet tube, a thermometer, and a stirring rod was purged with nitrogen, and then P-PDA was added.
- B PDA is added, and P—PDA and B PDA as a monomer are polymerized in DMAC at a molar ratio of 1 1 to 1.
- concentration of the monomer was adjusted to 15% by mass and stirred at 25 ° C for 5 hours, a brown viscous polyamidic acid solution was obtained.
- Each zone has three rows of slit outlets above and below the film, the hot air temperature between each outlet can be controlled in the range of plus or minus 1.5 ° C, and the air volume difference can be controlled in the range of plus or minus 3%. It is set as follows. In the width direction, the width is controlled to be within ⁇ 1 ° C for a width equivalent to 1.2 times the effective film width.
- the temperature 30 mm above and below the film was set as follows.
- the length of each zone is the same and the total drying time is 18 minutes.
- the air volume is the sum of the air volumes from the outlets of each zone, and production example 10, production example 11 and production example 12 were changed within the above ranges.
- the surface of the coating reached the dry touch shortly after entering the fourth zone, and since then, the drying has progressed in a decelerating manner. At this time, set the lower temperature and air volume higher than the upper one, Promotes the diffusion of solvents.
- thermocouple supported at a position of 1 Omm above the film at the part directly below the air outlet in the center of each zone, and it was confirmed that it was within ⁇ 1.5 ° C. Yes.
- each GF green film
- the values of IIM A — IM B I of each GF were 0.8, 1.2, and 3.9, respectively.
- the temperature of the peeling atmosphere was 27 ° C. In the following production examples, peeling was performed under the same conditions.
- Each GF (green film) obtained was passed through a continuous heat treatment furnace that was purged with nitrogen while holding both ends with a pin tenter.
- the first stage was at 180 ° C for 5 minutes.
- the temperature was raised in ° CZ seconds, and the second stage was heated at 400 ° C for 5 minutes under the condition of 5 minutes to proceed the imidization reaction.
- each polyimide film which exhibits brown, ie, IF production example 10, IF production example 11 and IF production example 12 was obtained.
- the thickness and curl degree of each IF obtained are 15 zm, 2.6% for IF production example 10 and 1% for IF production example 1 1 1 .5 um 3.9%, 1 for IF production example 1 2 5 ⁇ m, 7.3%.
- a vessel equipped with a nitrogen inlet tube, a thermometer, and a stirring rod was purged with nitrogen, and then P-PDA was added.
- DMAC is added and completely dissolved
- B PDA is added
- P-PDA and B PDA as monomers are polymerized in DMA C at a molar ratio of 1 to 1, and the monomer charge concentration is 15%.
- a brown viscous polyamidic acid solution was obtained.
- the obtained polyamic acid solution was coated on a stainless steel belt (the gap between squeegee belts was 450 ⁇ m), and dried in the same manner as in Production Examples 10 to 12.
- GF polyamide acid film
- IIM A — IM B I of each GF were 1.1, 1.5, and 4.2, respectively.
- the obtained GF was passed through a continuous heat treatment furnace purged with nitrogen, and the first stage was heated at 180 ° C for 3 minutes and the heating rate was 4 ° C / sec.
- the second stage was 460 ° C.
- the 2nd stage heating was applied under the condition of 2 minutes to proceed the imidization reaction. Thereafter, by cooling to room temperature in 5 minutes, each IF having a brown color, that is, IF Production Example 13, IF Production Example 14 and IF Production Example 15 was obtained.
- the thickness and curl degree of each IF obtained were 15 ⁇ , 4.3% in IF Production Example 1 3 and 15.3% in IF Production Example 14, 15.5 ⁇ m, 5.5%, and IF Production Example 15 1 5 / m, 8.3%.
- Production Example 10 100 parts by mass of the polyamic acid solution obtained in 10 were mixed at a ratio of 15 parts by mass of AA and 3 parts by mass of IQ, and this was coated on a stainless steel belt (the gap between squeegee belts). Was 430 ⁇ ), and was dried using the same drying apparatus as in Production Examples 10 to 12.
- the drying conditions temperatures were 3 Omm above and below the film) were as follows.
- Air volume 20-25 25m 3 minutes The length of each zone is the same and the total drying time is 9 minutes.
- the air volume is the sum of the air volumes from the outlets of each zone.
- the air volume was changed within the above range.
- the surface of the coating film reaches the touch-dried state in the center of the second zone, and thereafter, drying at a reduced rate is performed.
- the GF that became self-supporting after drying was peeled from the stainless steel belt to obtain 3 types of each GF, that is, Production Example 16, Production Example 17, and Production Example 18.
- IIM A — IM B I of each GF were 5.3, 7.5, and 1.1.2, respectively.
- Each GF obtained was passed through a continuous heat treatment furnace purged with nitrogen in a state of gripping both ends with a pin tenter.
- the first stage was 1 ⁇ 0 ° C for 5 minutes, and the heating rate was 4 ° C /
- the temperature was raised in seconds, and the second stage was heated at 400 ° C for 5 minutes under the condition of 5 minutes to proceed with the imidization reaction. Then, it cooled to room temperature in 5 minutes, and obtained each IF and IF production example 16, IF production example 17, and IF production example 18 which show brown.
- the thickness and curl degree of each IF obtained were 1 5 111, 10.5% in IF Production Example 16, 15.1 ⁇ m, 14.1% in IF Production Example 17 and IF Production Example 1 8 It was 15 ⁇ m and 18.5%.
- N, N-dimethylacetamide is used as the polar organic solvent
- 1,3-bis (3-aminophenoxy) benzene is used as the diamine compound in a molar ratio of 3,3, dihydroxy-4,4'-diaminobiphenyl.
- 9: 1 a solution of polyamic acid polymer 3 ⁇ 4 ⁇ was obtained using 3, 3, 4, 4, 4, monoethylene glycolenolevenzoate tetra force rubonic acid dianhydride as ester tetracarboxylic acid. This polyamic acid polymer solution was heated under reduced pressure to obtain a thermoplastic polyimide.
- thermoplastic polyimide 80 parts by mass of this thermoplastic polyimide, 100 parts by mass of Epicote 1032H60 as a thermosetting resin (epoxy resin), and 4, 4 '-as a hardener 30 parts by mass of diaminodiphenyl ether was added to 10 parts by mass of dioxolane as an organic solvent, and dissolved by stirring. As a result, an adhesive solution was obtained.
- the obtained adhesive solution was cast on one side of a 12.5 m-thick releasable polyethylene terephthalate film with a release layer formed on one side and dried at 60 ° C for 2 minutes to obtain a thickness of 2 5 ⁇ m adhesive layer-formed polyethylene terephthalate fill ⁇ ⁇ was obtained.
- the obtained adhesive layer-formed polyethylene terephthalate fill adhesive layer and the polyimide film obtained in the above production example were laminated and laminated, and each single-sided adhesive sheet from each polyimide film (Ding 3 Examples 1-1: Ding 3 In Example 6, each polyimide iminolem of the same end number obtained in the above production example was used, and in KTS Comparative Examples 1-3, IF Production Example 7-IF Production Example 9 -Each of the obtained films was used, and so on.
- the total thickness of the polyimide film and the adhesive layer of the obtained adhesive sheet was 17.5 m.
- the two films thus obtained were laminated with the adhesive layer and both sides of the polyimide film obtained in the above production example, and each adhesive sheet from each polyimide film (RYS Examples 1 to RYS).
- Example 6 and RYS Comparative Examples 1 to R YS Comparative Example 3) were obtained.
- the total thickness of the polyimide film and the adhesive layer of the obtained adhesive sheet was 20 ⁇ m.
- each adhesive sheet obtained was judged as good or bad.
- X when the average value of warpage exceeds 10% in each sheet, ⁇ when warpage exceeds 7% to 10%, ⁇ 3-7% ⁇ , less than 3% ⁇ It was.
- KTS Example 1 KTS Example 2, KTS Example 4 are all ⁇ , KT S Example 3, KTS Example 5 is ⁇ , KTS Example 6 is ⁇ , KT S Comparative Example 1, KT S Comparison Example 2 and KTS Comparative Example 3 were all X.
- RYS Example 1 RYS Example 2, RYS Example 3, RYS Proposed Example 4, RYS Example 5 are all ⁇ , 1 ⁇ 3 Example 6 is ⁇ , 1 3 Comparative Example 1 is ⁇ , RYS Comparative Example 2 1 ⁇ 3 Comparative Example 3 was> ⁇ .
- Each polyimide film obtained in Production Examples 1 to 9 was used.
- the polyimide film was first slit to a width of 508 mm and corona treated.
- Each Polyi RV50 (trade name) manufactured by Toyobo Co., Ltd. was applied to the surface of the midfilm as an adhesive to a thickness of 18 ⁇ and dried in a dry oven at 80 ° C for 15 minutes.
- Each adhesive sheet was obtained from a polyimide film. Next, the adhesion surface of the electrical angle copper foil (18 ⁇ m) and the adhesive coated surface of the adhesive sheet are aligned, and the roll temperature is 120 ° C and the feed speed is 60 c using a rubber cone-laminator laminator.
- the quality was determined based on the average value of the degree of warpage of the obtained metal laminate sheets.
- the average value of warpage exceeds 10% is X
- warpage is more than 7% to 10%
- ⁇ , 3-7% is ⁇ , less than 3% ⁇ . .
- Ding 1 ⁇ Example 1, ⁇ Example 2, KT S Example 3, ⁇ Example 4, ⁇ Example 5 are all ⁇
- ⁇ Example 6 is ⁇
- ⁇ Comparative Example 1 is ⁇
- ⁇ ⁇ Comparative Example 2 and ⁇ ⁇ ⁇ Comparative Example 3 were X.
- Each metal laminate sheet (copper-clad laminate film) obtained above is slit; L 0 5mm wide, punched with sprocket holes for conveyance and O holes for alignment at both ends, and continuous processing for C OF processing Set in the machine.
- a photoresist is applied to the surface of the rolled copper foil, a predetermined O pattern is exposed and developed, and then the patterned resist is used as a mask with ferric chloride water. Etching treatment was performed using the solution. Apply the liquid resist type solder resist leaving the pad part 'Dry, mask exposure, develop, and pad the pad part with a thickness of 1.5 ⁇ , printed wiring from each polyimide film A plate (film substrate for COF) was obtained.
- a semiconductor chip is mounted on the obtained film substrate for COF, bonded with a chip chip bonding, and then sealed with a resin by a potting method to form each semiconductor package (SCJ Example 1 to SCJ Example 6, SCJ Comparative Example 1 to SC J Comparative Example 3) were produced in 2000 pieces each.
- Each semiconductor obtained Interactions between packages of chips Z substrate is 2 56.
- the package was loaded into an Etak (R) temperature cycle testing device (Enomoto Kasei Co., Ltd.) and a heating / cooling test was conducted. The test was performed by heating and cooling by repeatedly raising and lowering the temperature every 30 minutes between a low temperature of 150 ° C and a high temperature of 150 ° C. The test time was 3000 hours.
- a continuity test was conducted after the test to determine the defect rate at the connection point.
- the failure rate at the connection point was evaluated as ⁇ when less than 10 ppm, ⁇ when 10 to 301> 111, and X when more than 30 ppm.
- Example 1 SC J Example 2, SCJ Example 3, SCJ Example 4, 30; Example 5 is all ⁇ , 3) Example 60, 30] Comparison Example 1, SCJ Comparative Example 2, and SCJ Comparative Example 3 were all X.
- Each polyimide film obtained in Production Examples 1 to 9 was used. Each polyimide film was first slit to a width of 508 mm, corona-treated, and then RV50 (trade name) manufactured by Toyobo Co., Ltd. was applied as an adhesive to the surface of each polyimide film. Both sides were coated so as to be ⁇ and dried in an oven at 80 ° C. for 15 minutes to obtain each adhesive sheet from each polyimide film. Next, the adhesion treatment surface of the electrolytic copper foil (12 m) and the adhesive application surface of the adhesive sheet are aligned, and laminated at a roll temperature of 120 ° C and a feed rate of 60 cmZ with a silicone rubber roller laminator.
- the adhesive is cured by treating at 150 ° C for 5 hours in a vacuum dryer, and then each double-sided metal laminate sheet from each polyimide film (R YM Example 7 to RYM Example 1 2 and RYM Comparative Example 4 to RYM Comparative Example 6) were used.
- each metal laminate sheet obtained was judged as good or bad based on the average value of the warpage.
- RYM Example 7 RYM Example 8, RYS Example 9, RYM Example 10, RYM Example 1 1 are all ⁇ , RYM Example 1 2 is ⁇ , RYMI Comparative Example 4 is ⁇ , RYM Comparative Example 5, RYM Comparative Example 6 was X.
- a negative resist with a film thickness of 6 ⁇ m is formed on one side of each double-sided metal laminate sheet produced above using a liquid resist, and the copper layer is removed by etching.
- Line spacing / line width ⁇ 1 8 ⁇ ⁇ / 1 2 A test circuit pattern of 4.8 cm X 4.8 cm, which is supposed to be mounted on an L CD driver, containing fine lines of ⁇ m was formed.
- a square pattern of 4 mzm square is formed in a grid pattern with a pattern spacing of 0.5 mm on the back side, and each test circuit board from each polyimide film (Ding? 1 Example 7 to Ding? 1 Example 1 2 and TPR comparison Example 4 to TPR comparison example 6) were prepared in the same manner. Pattern area is 50% on both sides
- Examples 1 to 1 YS Example 6 and RY S Comparative Example 1 to RY S Comparative Example 3 and single-sided bonding of Examples 1 to 6 and Comparative Examples 1 to 3 to the outermost layer of each test month circuit board Sheets are arranged so as to be composed of the same polyimide film, and are hot-pressed at 150 ° C. Layers were applied to produce each test multilayer substrate. The obtained multilayer substrate was immersed in a tin-silver solder bath at 260 ° C. for 15 seconds, and the presence or absence of pattern abnormality was observed and evaluated.
- each test multilayer board is cut in the direction in which the cross-section in the width direction of the fine line pattern appears, embedded in resin, polished on the end face, and magnified with a microscope, and between the test multilayer boards We evaluated whether there was any deformation as shown in Fig. 3
- the multilayer substrates for each test using the polyimide film had no deformation of the adhesive sheet, but the IF production example 7 to 1 F Production example 9 Deformation of the adhesive sheet was observed in each test multilayer substrate using polyimide film.
- N, N-dimethylacetamide is used as an organic polar solvent
- 1,3-bis (3-aminophenoxy) benzene and 3,3, -hydroxy-4,4, and diaminobiphenyl as diamine compounds Is used in a molar ratio of 9: 1, and 3,3,4,4,
- monoethyleneglycolenobenzoate tetraforce rubonic acid dianhydride is used as the tetratetracarboxylic acid to form a polyamic acid polymer solution. Obtained. This riamic acid polymer solution was heated under reduced pressure to obtain a thermoplastic polyimide.
- the resulting adhesive solution was cast on one side of a release layer with a release layer on one side 12.5 / xmO on one side of a polyethylene terephthalate film, and dried at 60 ° C for 2 minutes. 2. A 5 tm adhesive layer was formed.
- the obtained film was laminated with the adhesive layer and one side of the polyimide film obtained in the above production example, and each single-sided adhesive sheet from each polyimide film (KT Examples 13 to KT).
- KT S Example 1 3 to KTS Example 1 8 each polyimide film obtained in the above Production Example 1 0 15 was used.
- KTS Comparative Examples 7 to 9 the polyamide films obtained in the above IB Production Examples 16 to 18 were used, respectively, and so on.
- the total thickness of the polyimide film and the adhesive layer of the obtained adhesive sheet was 17.5 / zm.
- the obtained adhesive sheet had a polyimide film, an adhesive layer and a total O thickness of 20 ⁇ m.
- the quality of each adhesive sheet obtained was judged as good or bad.
- the average value of the warp degree in this case is X, the warp degree is over 7% to 10%, ⁇ is 3-7%, and the less than 3% is ⁇ .
- KTS Example 1 3 KTS Example 14, KTS Example 1 6; ⁇ All ⁇ , KTS Example 15, KTS Example 1 7 is ⁇ , KTS Example 18 is ⁇ , KT S Comparative Example 7, KTS Comparative Example 8, and KTS Comparative Example 9 were all X.
- R YS Example 1 3, R YS Example 14, RYS Example 15, R YS Example 16, RYS Example 1 7 are all ⁇ , RYS Example 1 8 is ⁇ , RYS Comparative Example 7 ⁇ , R YS Comparative Example 8 and ⁇ 8 Comparative Example 9 were good.
- Each polyimide film obtained in Production Examples 10 to 18 was used. Each polyimide film was first slit to a width of 508 mm and corona treated. Next, apply Toyobo Co., Ltd. RV 50 (southern product name) as an adhesive to the surface of each polyimide film to a thickness of 18 and apply it in a dry oven at 80 ° C. It was dried for a while to obtain each adhesive sheet from each polyimide film.
- RV 50 product name
- KTM Example 1 3 KTM Example 14, KTS Example 15, TM Example 16, KTM Example 1 7 are all ⁇
- KTM Example 1 8 is ⁇
- KTIM Comparative Example 7 is ⁇
- KTM Comparative Example 8 and KTM Comparative Example 9 were X.
- Each metal laminated sheet (copper-clad laminated film) obtained above is slit to a width of 105m: m and punched with a sprocket hole for conveyance and a hole for alignment at both ends. And set on a continuous processing machine for C OF processing.
- a photoresist is applied to the surface of the rolled copper foil, a predetermined pattern is exposed and developed, and then the patterned resist is used as a mask with ferric chloride water. Etching treatment was performed using the solution.
- a semiconductor chip is mounted on the obtained film substrate for COF, bonded using flip chip bonding, and then sealed with a resin by a potting method.
- Example 1 8, SCJ Comparative Example 7 to SC J Comparative Example 9) were produced.
- the number of contacts between the chip substrates of each semiconductor package obtained is 256.
- the package was loaded into an Etac (R) temperature cycle tester (Enomoto Kasei Co., Ltd.) and a heating / cooling test was conducted. The test was performed by repeatedly heating and cooling between a low temperature of 150 ° C and a high temperature of 150 ° C every 30 minutes. The test time was 3000 hours.
- a continuity test was conducted after the test to determine the defect rate at the connection point.
- the failure rate at the connection point was evaluated as ⁇ when less than 10 P Pm, ⁇ when 10 to 30 13111 was ⁇ , and X when 30 ppm was exceeded.
- Each polyimide film obtained in Production Examples 10 to 18 was used. Each polyimide film was first slit to a width of 508 mm, corona-treated, and then the surface of each polyimide film was coated with RV50 (trade name) manufactured by Toyobo Co., Ltd. to a thickness of 18 ⁇ Both sides were coated on the substrate and dried for 15 minutes in a dry open at 80 ° C. to obtain each adhesive sheet from each polyimide film. Next, electrolytic copper foil (1 2 ⁇ ) and the adhesive-coated surface of the adhesive sheet are laminated together, laminated with a silicone rubber roller laminator at a roll temperature of 120 ° C and a feed rate of 60 cm / min.
- RV50 trade name
- electrolytic copper foil (1 2 ⁇ ) and the adhesive-coated surface of the adhesive sheet are laminated together, laminated with a silicone rubber roller laminator at a roll temperature of 120 ° C and a feed rate of 60 cm / min.
- RYM Example 19 RYM Example 20, RYS Example 21, RY ⁇ M Example 22, RYM Example 23 are all ⁇ , RYM Example 24 is ⁇ , RYM Comparative Example 10 is ⁇ , RYM Comparative Example 1 1 and RYM Comparative Example 1 2 were X.
- a negative resist with a film thickness of ⁇ ⁇ m is formed on one side of each of the double-sided metal laminate sheets prepared above using a liquid resist, and the copper layer is removed by etching.
- Line spacing / line width is 1 7 m 4.8 cm x 4.
- 8 cm test circuit pattern which is assumed to be mounted on an LCD driver including fine lines of ⁇ , was formed in the same way on the back side, 4 mm square; 0.5 mm in a grid pattern and each test circuit board from each polyimide imprint (Dick 1 Example 1 9 to TPR Example 24 and TPR Comparative Example 1 0 to TPR Comparative Example 1 2) Many patterns were produced in the same way, and the pattern area was 50% on both sides.
- each test multi-layer substrate is cut in the direction in which the cross-section in the width direction of the fine line pattern appears, embedded in resin, end-face polished, and magnified with a microscope, and between the test multi-layer substrates
- the adhesive sheet was evaluated for deformation.
- IF Production Example 1 0 to IF Production Example 1
- the test multilayer substrates using the polyimide film of 5 were all without deformation of the adhesive sheet, but IF Production Example 1 6 to IF Production Example 1 Deformation of the adhesive sheet was observed in each test multilayer substrate using the polyimide film of No. 8.
- each polyimide film obtained in the above production example applies SA 1 with a double coater on both sides of each polyimide film obtained in the above production example to a dry thickness of 7 // m, and 30 minutes at 90 ° C. Dried.
- the dried film is passed through a continuous heat treatment furnace, heated from 200 ° C to 380 ° C in an approximately linear manner for 20 minutes, cooled for 10 minutes, and then each 15 ⁇ m thick brown polymer
- Each double-sided adhesive sheet which is a thermocompression-bonding multilayer polyimide film with a 4 / Zm thick thermoplastic polyimide on both sides of the film (RYS Example 25 to RYS Example 30 and RYS comparison) Example 1 3 to RYS Comparative Example 1 5) were obtained.
- the total thickness of the polyimide film and adhesive layer of each double-sided adhesive sheet obtained is 23 ⁇ m.
- each adhesive sheet obtained was judged as good or bad. X when the average value of warpage in each sheet exceeds 10%, ⁇ when warpage exceeds 7% to 10%, 3-7 ° / 0 when ⁇ , less than 3% ⁇ .
- RYS Example 25 RYS Example 26, RYS Example 27, RYS Example 28, Example 2 9 are all ⁇ , Scale ⁇ 3 Example 30 is ⁇ , 1 ⁇ 3 Comparative Example 13 is RYS Comparative Example 14, RYS Comparative Example 15 was X.
- the roll surface temperature was heated to 240 ° C by heating using a thermocompression bonding machine that used both internal heating and external heating. Pass the thermocompression-bonding multilayer polyimide film obtained between the rolls and supply electrolytic copper foil with a thickness of 18 ⁇ (CF— ⁇ 9) made from Fukuda Metal Foil Powder Co., Ltd. from both sides.
- Each double-sided metal laminate sheet (RYM Example 25 to RYM Example 30 and RYM Comparative Example 1 to 3 to RYM Comparative Example 15) was obtained from each polyimide film made of fusible multilayer polyimide film and copper foil. Pass / fail was judged by the average value of the degree of warpage of each metal laminate sheet obtained. Each metal laminated sheet has an average value of warpage exceeding 10% X, warpage 7% Exceeding more than 10%, ⁇ , 3-7%, ⁇ , less than 3%.
- a negative resist with a thickness of 6 ⁇ m is formed on one side of each double-sided metal laminate sheet prepared above using a liquid resist, the copper layer is removed by etching, and the Z-line width between lines is as fine as 60 m / 40 ⁇ .
- a circuit pattern for a test of 4.8 cmK and 4.8 cm was formed, assuming that the LCD driver is included.
- a 4 mm square pattern is formed in a grid pattern with a pattern spacing of 0.5 mm, and each test circuit board from each polyimide film (TPR Examples 25 to TPR Examples) 30 and TPR Comparative Example 1 3 to TPR Comparative Example 1 5) were prepared in the same manner.
- the pattern density is 50% on both sides.
- each test multi-layer substrate was cut in the direction in which the cross-section of the fine line pattern had a width of f3 ⁇ 4, embedded in resin, polished on the end face, and then magnified with a microscope.
- the multilayer substrates for each test using the polyimide film of IF Production Example L to IF Production Example 6 where the adhesive sheet between the substrates was evaluated for deformation all of the adhesive sheets had no deformation.
- IF manufacturing example 7 to IF manufacturing example 9 Deformation of the adhesive sheet was observed in each multi-layer substrate for testing using coated film.
- N-methyl-2-pyrrolidone is added to a reaction vessel equipped with a stirrer and a nitrogen introduction tube, and 1,3-bis (4-aminophenoxy) benzene and 2,3,3,4,1-biphenyltetracarboxylic acid dianhydride and a 000: monomer concentration at 1 000 molar ratio of added to a 22 mass 0/0, further bird whistle - Ruhosufeto was added 0.1 wt% against monomer one mass. After completion of the addition, the reaction was continued for 1 hour while maintaining 25 ° C. to obtain a polyamic acid (SA 1) solution. The resulting polyamidic acid had a 77 sp / C of 1.6.
- SA 1 polyamic acid
- a double coater was used to apply a dry thickness on one side of each polyimide film obtained in the production example and dried at 90 ° C. for 30 minutes.
- the dried film is passed through a continuous heat treatment furnace and heated from 200 ° C to 380 ° C in approximately linear fashion for 20 minutes and then cooled for 10 minutes.
- Each single-sided adhesive sheet that is a thermocompression-bonding multilayer polyimide film with a 4 ⁇ thick thermoplastic polyimide on one side of the polyimide film (KT Example 31 to KTS Example 36 and KTS Comparative Example) 1 6 to KTS Comparative Example 1 8; KT S Example 3 1 to KTS Example 36
- KTS Comparative Example 1 6 to 18 Each of the polyamide films obtained in the above Production Examples 16 to 18 was used in the same manner.
- each polyimide film obtained in the production example was applied to both sides of each polyimide film obtained in the production example with a double coater so as to have a dry thickness of 7 im, and dried at 90 ° C. for 30 minutes.
- the dried film is passed through a continuous heat treatment furnace, heated from 200 to 380 ° C in approximately linear fashion for 20 minutes, cooled in 10 minutes, and then each brown polyimide with a thickness of 15 / zm
- Each double-sided adhesive sheet that is a thermocompression-bonding multilayer polyimide film with a 4 ⁇ thick thermoplastic polyimide film on both sides of the film (RYS Example 3 1 to RYS Example 36 and RYS Comparative Example 16 to ⁇ 3 Comparative Example 1 8) were obtained.
- the total thickness of the polyimide film and the adhesive layer of each obtained double-sided adhesive sheet was 23 ⁇ m.
- each adhesive sheet obtained was judged as good or bad. X when the average value of the warpage of each sheet exceeds 10%, ⁇ when the warpage exceeds 7% to 10%, ⁇ 3-7% ⁇ , less than 3% ⁇ did.
- KTS Example 3 1, 1 ⁇ 3 3 Example 32, KT S Example 34 are all ⁇
- KTS Example 3 6 is ⁇
- KT S Comparative Example 16 and KTS Comparative Example 17 and KTS Comparative Example 18 were all X.
- RYS Example 3 1, RYS Example 3 2, RYS Example 3 3, RYS Example 34, RYS Example 35 are all ⁇ , 1 ⁇ 3 Example 36 is ⁇ , 1 ⁇ 3 Comparative Example 16 is , RYS Comparative Example 17 and RY S Comparative Example 18 were X.
- thermocompression-bonding multilayer polyimide film obtained between the rolls, supply electrolytic copper foil with a thickness of 18 ⁇ (Fukuda Metal Foil Powder Industrial Co., Ltd., CF——9) from both sides.
- Heat-sealable multilayer polyimide film Each double-sided metal laminated sheet (RYM Example 3 1 to RYM Example 36 and RYM Comparative Example 16 to RYM Comparative Example 1 8) was obtained using each polyimide film made of copper foil. .
- Pass / fail was judged by the average value of the degree of warpage of each metal laminate sheet obtained. X when the average value of warpage of each metal laminate sheet exceeds 10%, ⁇ when warpage exceeds 7 ° / 0 to 10%, 3-7% ⁇ , less than 3% ⁇ .
- RYM Example 3 1 ⁇ ⁇ 1 ⁇ Example 32, 1 ⁇ 3 Example 33, R YM Example 34, RYM Example 35 are all ⁇ , RYM Example 3 6 is ⁇ , RYM Comparative Example 16 ⁇ , RYM Comparative Example 17 and R YM Comparative Example 18 were X.
- a negative resist with a film thickness of 6 ⁇ m is formed on one side of each double-sided metal laminate sheet produced above using a liquid resist, the copper layer is removed by etching, and a fine line with a line width of 60 jam and 40 ⁇ Intended for use with LCD driver including 4.8 cmX 4.8
- a test circuit pattern of cm was formed.
- a 4 mm square pattern is formed on the back side in a grid pattern with a pattern spacing of 0.5 mm, and each test circuit board (TPR Example 3 1 to TPR Example) is made using each polyimide film.
- 36 and TPR Comparative Example 1 6 to TPR Comparative Example 1 8) were prepared in the same manner.
- the pattern area density is 50% on both sides
- each test multilayer board is cut in the direction in which the cross-section in the width direction of the fine line pattern appears, embedded in resin, polished on the end face, and then magnified and observed with a microscope.
- the adhesive sheet was evaluated for deformation.
- IF Production Example 10 to IF Production Example 15 The multilayer substrates for each test using the polyimide film of 5 had no deformation of the adhesive sheet, but IF Production Example 16 to IF Production Example 18 Deformation of the adhesive sheet was observed in each test multi-layer substrate using polyimide film.
- an adhesive sheet, a metal laminate sheet and a printed wiring board using a polyimide film as a base film are provided.
- a metal foil layer is formed on one or both sides of a polyimide film, and unnecessary portions of the metal foil layer are removed, for example, a line width of 5 to 30 / zm, and a line spacing of 5 to 30. / xm, A wiring pattern with a thickness of about 3 to 40 ⁇ m is formed.
- the heat treatment, etc. when laminating this metal foil layer affects the base film, but the physical property difference between the front and back surfaces of the polyimide film during these various treatments, especially the degree of curl after heat treatment of the film at 300 ° C is below a certain level.
- an adhesive sheet composed of a polyimide film the polyimide film is hardly warped or distorted, especially when subjected to high-temperature processing. As a result, the quality and yield of the obtained printed wiring board are improved. To do. Thereafter, flatness can be maintained even for high-temperature processing such as annealing and soldering received by these printed wiring boards, and the yield of these products is improved.
- polyimide films as heat resistant films are often exposed to heat, and the low degree of curl after 300 ° C heat treatment of the film against the heat is used when used as a substrate for industrial products. It becomes extremely important quality.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Laminated Bodies (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
Claims
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CN2005800500336A CN101193751B (zh) | 2005-04-20 | 2005-07-01 | 粘合板、金属-层压板和印刷线路板 |
EP20050757941 EP1872940A4 (en) | 2005-04-20 | 2005-07-01 | ADHESIVE SHEET, METAL LAMINATED SHEET AND PRINTED CIRCUIT BOARD |
US11/912,105 US20090056995A1 (en) | 2005-04-20 | 2005-07-01 | Adhesive sheet, metal-laminated sheet and printed wiring board |
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JP7047282B2 (ja) | 2016-12-01 | 2022-04-05 | デクセリアルズ株式会社 | フィラー含有フィルム |
JP6497487B2 (ja) * | 2016-12-02 | 2019-04-10 | 株式会社村田製作所 | 多層配線基板 |
CN109735296B (zh) * | 2019-01-09 | 2019-08-23 | 北京迪尔捷科技有限公司 | 聚酰亚胺粘合剂、制备方法和制品 |
US11277909B2 (en) * | 2019-08-30 | 2022-03-15 | Ttm Technologies Inc. | Three-dimensional circuit assembly with composite bonded encapsulation |
CN111205646B (zh) * | 2020-03-20 | 2022-09-09 | 株洲时代华鑫新材料技术有限公司 | 一种黑色哑光聚酰亚胺薄膜及其制备方法 |
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- 2005-07-01 CN CN2005800500336A patent/CN101193751B/zh active Active
- 2005-07-01 US US11/912,105 patent/US20090056995A1/en not_active Abandoned
- 2005-07-01 EP EP20050757941 patent/EP1872940A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
EP1872940A4 (en) | 2008-12-10 |
CN101193751B (zh) | 2012-10-31 |
EP1872940A1 (en) | 2008-01-02 |
KR20080012300A (ko) | 2008-02-11 |
US20090056995A1 (en) | 2009-03-05 |
CN101193751A (zh) | 2008-06-04 |
KR100979618B1 (ko) | 2010-09-01 |
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