WO2012108264A1 - 2層銅張積層材及びその製造方法 - Google Patents
2層銅張積層材及びその製造方法 Download PDFInfo
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- WO2012108264A1 WO2012108264A1 PCT/JP2012/051549 JP2012051549W WO2012108264A1 WO 2012108264 A1 WO2012108264 A1 WO 2012108264A1 JP 2012051549 W JP2012051549 W JP 2012051549W WO 2012108264 A1 WO2012108264 A1 WO 2012108264A1
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- polyimide film
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- copper
- clad laminate
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/021—Cleaning or etching treatments
- C23C14/022—Cleaning or etching treatments by means of bombardment with energetic particles or radiation
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- 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
- B32B15/088—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 comprising polyamides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
- C23C14/025—Metallic sublayers
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
- C23C14/205—Metallic material, boron or silicon on organic substrates by cathodic sputtering
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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
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/381—Improvement of the adhesion between the insulating substrate and the metal by special treatment of the substrate
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- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0092—Metallizing
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- 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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/08—Dimensions, e.g. volume
- B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
- B32B2309/105—Thickness
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- 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
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/12—Copper
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- 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
- B32B2379/00—Other polymers having nitrogen, with or without oxygen or carbon only, in the main chain
- B32B2379/08—Polyimides
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
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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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/09—Treatments involving charged particles
- H05K2203/095—Plasma, e.g. for treating a substrate to improve adhesion with a conductor or for cleaning holes
-
- 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
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/022—Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
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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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12778—Alternative base metals from diverse categories
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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.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
Definitions
- the present invention is a two-layer copper-clad laminate in which a copper layer is formed on a polyimide film by sputtering or plating, while maintaining an excellent heat-resistant peel, and an etching solution for polyimide film (Toray Engineering Corp. TP-3000)
- the present invention relates to a two-layer copper-clad laminate with a delayed etching rate and a manufacturing method thereof.
- PI polyimide film
- Single-sided and double-sided CCLs with a copper layer thickness of 2 to 5 ⁇ m and a polyimide film thickness of 12.5 to 50 ⁇ m are required for applications such as medical probes and gas electron multipliers. Is suitable.
- the two-layer CCL material manufactured by sputtering or plating is a copper film formed on a polyimide film by forming a submicron copper layer by sputtering and then by copper sulfate plating.
- the basic invention is described in Patent Document 1 below.
- the CCL manufacturing process for such applications includes a copper layer etching process, a pressing process, and a polyimide film etching process.
- the polyimide film etching process is a process that is performed for forming a through hole or a flying lead, and is an important process for designing a free circuit.
- the polyimide film etching process includes a wet method using an etchant and a dry method of irradiating laser, ions, and the like.
- the dry method is capable of fine processing as compared with the wet method, and has a feature that the finish after processing is beautiful.
- the dry method locally irradiates laser and ions, if there is not enough adhesion between the copper layer and the polyimide film, the copper layer and the polyimide film peel off during the manufacturing process, adversely affecting the subsequent process. give. Of course, when the peeling is severe, the intended production itself is impossible.
- One way to improve the adhesion between the copper layer and the polyimide film is to increase the thickness of the tie coat layer such as NiCr between the copper layer and the polyimide film to form a film with a thickness of about 25 nm.
- COF Chip on film
- the thickness of the tie coat layer needs to be suppressed to 10 nm or less from the viewpoint of etching properties.
- Plasma treatment is a common technique for improving the adhesion between the copper layer and the polyimide film. Many effects have been reported (see Patent Document 3). However, the reforming effect by the plasma treatment varies greatly depending on the form of discharge and the type of gas used. For example, Patent Document 3 reports that “the nitrogen content ratio before the modification treatment of the polyimide to be used is 6.4 at% or less, which is the upper limit”.
- the nitrogen content of the polyimide film before modification is 6.4 at% which is the nitrogen content of the polyimide film disclosed in Patent Document 3, which is greatly different from the present invention described later. This is considered because the kind of polyimide film is different. As will be described later, it is important to perform the plasma treatment so that the nitrogen content after the reforming increases when comparing before and after the reforming.
- the tie coat layer has a thickness of 10 nm or less, so it is necessary to consider improving the adhesion by plasma treatment.
- the present invention relates to a two-layer copper-clad laminate (CCL material) in which a copper layer is formed on a polyimide film by sputtering and plating, in particular, two layers having a copper layer thickness of 5 ⁇ m or less and a polyimide film thickness of 12.5-50 ⁇ m.
- CCL material copper-clad laminate
- it shows good adhesion and adhesion after heat aging, does not peel off during dry polyimide film etching process, and at this time the dissolution characteristics of polyimide film is better than untreated polyimide film
- the present invention 1) One side or both sides of a polyimide film having a thickness of 12.5 to 50 ⁇ m is subjected to plasma treatment in a nitrogen gas atmosphere, and then nitrogen is contained in the polyimide film by sputtering or electrolytic plating in the gas atmosphere.
- the present invention provides a two-layer copper-clad laminate characterized in that the polyimide film surface is modified to delay dissolution of the polyimide film by an etching solution compared to a non-plasma-treated polyimide film.
- the present invention also provides: 2) Two-layer copper in which a polyimide layer having a thickness of 12.5 to 50 ⁇ m is subjected to plasma treatment in a nitrogen gas atmosphere on one or both sides, and then a copper layer having a thickness of 1 to 5 ⁇ m is formed by sputtering or electrolytic plating.
- a two-layer copper-clad laminate characterized in that the surface of the plasma-treated polyimide film contains nitrogen increased from the center in the thickness direction of the polyimide film, which is not affected by the plasma treatment. To do.
- the present invention also provides: 3) The two-layer copper-clad laminate according to 1) above, wherein modification is performed to suppress hydrolysis of the polyimide film surface. 4) Before forming a copper layer on one or both sides of a polyimide film, a tie coat layer of Ni, Cr, Ni—Cu alloy or Ni—Cr alloy is formed on the polyimide film by sputtering. 2) A copper clad laminate according to any one of 3) to 3). 5) Any of 1) to 4) above, wherein the normal peel strength is 0.90 kN / m or more and the heat-resistant peel strength is 0.70 kN / m or more when the thickness of the tie coat layer is 10 nm or less. A two-layer copper clad laminate according to one item is provided.
- the present invention also provides: 6) Two-layer copper that forms a copper layer having a thickness of 1 to 5 ⁇ m by sputtering or electrolytic plating after performing plasma treatment on one or both sides of a polyimide film having a thickness of 12.5 to 50 ⁇ m in a nitrogen gas atmosphere
- a method for producing a stretch laminate material wherein the polyimide film surface is modified by adding nitrogen to the polyimide film by plasma treatment in the nitrogen gas atmosphere, and the polyimide film is etched compared to a non-plasma-treated polyimide film.
- Disclosed is a method for producing a two-layer copper-clad laminate, wherein dissolution by a liquid is delayed.
- the present invention also provides: 7) Two-layer copper that forms a copper layer having a thickness of 1 to 5 ⁇ m by sputtering or electrolytic plating after performing plasma treatment in one side or both sides of a polyimide film having a thickness of 12.5 to 50 ⁇ m in a nitrogen gas atmosphere.
- a two-layer copper clad laminate comprising a method for producing a clad laminate, wherein the surface of a polyimide film subjected to plasma treatment is increased in nitrogen content relative to the center in the thickness direction of the polyimide film not affected by plasma treatment
- a manufacturing method is provided.
- the present invention also provides: 8) The method for producing a two-layered copper clad laminate according to 6) above, wherein the modification for suppressing hydrolysis of the polyimide film surface is performed. 9) Before forming a copper layer on one or both sides of a polyimide film, a tie coat layer of Ni, Cr, Ni—Cu alloy or Ni—Cr alloy is formed on the polyimide film by sputtering. The method for producing a two-layer copper clad laminate according to any one of items 1) to 8). 10) Any of 6) to 9) above, wherein the normal peel strength is 0.90 kN / m or more and the heat-resistant peel strength is 0.70 kN / m or more when the thickness of the tie coat layer is 10 nm or less. The manufacturing method of the two-layer copper clad laminated material as described in one term is provided.
- the two-layer copper-clad laminate of the present invention is a two-layer copper-clad laminate (CCL material) in which a copper layer is formed on a polyimide film by sputtering and plating, in particular, one side of a polyimide film having a thickness of 12.5 to 50 ⁇ m and
- a two-layer copper-clad laminate (plate) in which a copper layer having a thickness of 5 ⁇ m or less is formed on both sides by sputtering or electrolytic plating, even if the tie-coat layer thickness is 10 nm or less in the two-layer copper-clad laminate, normal peel strength Of 0.9 kN / m or more and heat-resistant peel strength of 0.7 kN / m or more, showing good adhesion.
- PI film processing step One of the processing steps for the copper clad laminate is a polyimide (PI) film processing step. This is performed when a hole (through hole) is formed in the PI film or a flying lead portion is formed. That is, it is a process of removing unnecessary PI film.
- the PI film processing step includes wet processing and dry processing.
- the PI film in the processed part is irradiated with laser or ions. This is a method of removing by laser burning or sputtering. In the case of a laser, as well as the ion irradiation, the processed part is locally heated. In this dry process, the adhesion between the resin and copper is important, and when the adhesion is not insufficient, the resin and copper may be peeled off and processing may be difficult.
- the dry process is expensive, but the dry process is characterized by the fact that the machined surface is finished cleanly. Here, the finish of the machined surface will be described.
- the wet method inevitably generates sag and it is impossible to form a completely vertical hole, but the dry method does not generate sag. It is also possible to form holes that are completely perpendicular to each other. Furthermore, finer processing than the wet method is possible.
- the surface treatment process of the PI film in the manufacturing process of the copper clad laminate is an essential process for improving the adhesion between the PI film and the copper layer.
- the adhesion between the PI and the copper layer is low, in addition to problems during processing such as circuit flow during copper layer etching, long-term reliability after circuit formation also deteriorates.
- the PI film-copper layer interface needs to be resistant to heat. That is, it is important that the copper-clad laminate exhibit high heat-resistant peel strength.
- a feature of the copper clad laminate exhibiting high heat-resistant adhesion is that the nitrogen content increases before and after the PI film surface treatment step.
- the present invention provides a two-layer copper clad laminate that is compatible with such a dry PI film removal process.
- a submicron copper layer is formed by sputtering.
- the formed copper layer is referred to as a copper seed layer because it becomes a seed for forming an electrolytic copper layer to be performed later.
- a tie coat layer made of Ni, Cr, Ni—Cu alloy or Ni—Cr alloy can be formed on the polyimide film surface by sputtering before forming a submicron copper layer by sputtering.
- the thickness of the tie coat layer is 10 nm or less from the viewpoint of etching properties. Therefore, the earnest examination of the plasma processing of the polyimide film surface was implemented. As a result, the following knowledge was obtained.
- the plasma treatment strip is intensively studied, and the polyimide film is modified by discharge using nitrogen gas with an appropriate power, so that the nitrogen content from 15.9 at% before the modification to 16.5 to 18.6 at% is improved. It was confirmed by photoelectron spectroscopy (XPS) that the content could be increased (see Table 1). This result is different from the contents reported in Patent Document 3 described above. This can be said to be an example of “the modification effect by plasma treatment varies greatly depending on the form of discharge, the type of gas used, etc.”.
- the surface characterization was performed by XPS analysis of the polyimide film surface before and after the plasma treatment. Furthermore, the melt
- the polyimide film surface was modified from the viewpoint of etching property to form a polyimide film that is difficult to hydrolyze. Specifically, as shown in the following Examples, it was found that a polyimide film surface that is difficult to hydrolyze can be formed by increasing the nitrogen content of the polyimide film surface.
- the polyimide film of the present invention has a thickness of 12.5-50 ⁇ m. After plasma treatment on one or both sides of this polyimide film, a copper layer with a thickness of 5 ⁇ m or less is formed by sputtering or electrolytic plating, and a two-layer copper-clad laminate Produce material. And a plasma glow process is performed so that the nitrogen content of a polyimide film may increase. As a result, even when the thickness of the tie coat layer is 10 nm or less, it is possible to obtain good adhesion such that the normal peel strength is 0.9 kN / m or more and the heat-resistant peel strength is 0.7 kN / m or more.
- the plasma glow process is a discharge (glow discharge) phenomenon that occurs when a voltage is applied between the anode and the cathode in a low-pressure gas (argon, nitrogen, oxygen, etc.).
- a low-pressure gas argon, nitrogen, oxygen, etc.
- Plasma composed of positive ions for example, ions of argon, nitrogen, etc.
- positive ions, electrons, ultraviolet rays, etc. in the plasma act to modify the polyimide film surface. For this action, adsorption, desorption, molecular chain breakage, etc. can be considered.
- the plasma treatment is preferably nitrogen glow discharge.
- the surface treatment may be ion irradiation, ultraviolet irradiation or the like as long as the polyimide film is modified to a surface state having the characteristics shown in the following examples.
- the nitrogen content is increased as compared with the polyimide film not subjected to the plasma treatment.
- the effect of increasing the normal peel strength and the heat-resistant peel strength can be obtained by modifying the polyimide film surface, but only a small amount, that is, 1 nitrogen compared to the untreated polyimide film. Just increasing the percentage will have its effect.
- the nitrogen content is increased by about 5 to 20%, the normal peel strength and the heat-resistant peel strength are sufficiently increased, and the object can be achieved.
- the nitrogen content is not particularly limited and can be set arbitrarily.
- the plasma-treated polyimide film cannot be directly compared with the nitrogen content of the untreated polyimide film or the polyimide film before treatment. An increase in nitrogen was confirmed by comparing the film surface with the central portion in the thickness direction of the polyimide film that was not affected by plasma treatment.
- the nitrogen content of the surface of the polyimide film that appears after removing the copper layer of the two-layer copper-clad laminate is measured, and then the nitrogen content is measured by removing half of the polyimide film in the thickness direction.
- the content was determined from the photoelectron spectrum by analyzing the surface with XPS.
- the normal peel strength is 0.8 kN / m or more
- the heat-resistant peel strength is 0.7 kN / m or more, which shows good adhesiveness.
- a two-layer CCL with a slow etching rate for TP-3000) is obtained.
- the polyimide film used for the two-layer CCL material of the present invention is not particularly limited as long as the present invention can be achieved, but it is effective to use a BPDA-PPD based polyimide film.
- Example 1 A 5 ⁇ m thick copper layer was formed by plasma treatment, sputtering and plating using a polyimide film (Kapton, Toray Dapon Co., Ltd.) having a thickness of 25 ⁇ m.
- Plasma glow treatment was performed under the following conditions using glow discharge of nitrogen gas. At this time, the gas pressure is 9 Pa, and the normalized processing strength (glow processing strength) is 1.
- a tie coat layer NiCr (20 wt%) of 10 nm and a copper seed layer of 20 nm were formed by sputtering, and a copper layer of 18 ⁇ m was formed by electrolytic plating.
- Electrolytic plating was performed on the two-layer CCL produced as described above, and after a copper layer thickness of 18 ⁇ m, a 3 mm wide circuit was formed.
- the peel strength was measured by the 90 ° C method. Moreover, 150 degreeC and the heating for 168 hours were performed and the peel strength was measured. The reason for setting the copper layer thickness to 18 ⁇ m is to simplify the peel strength measurement.
- the polyimide film surface after the plasma treatment was analyzed by XPS, and the determination amount value of the nitrogen content was obtained from the photoelectron spectrum. Furthermore, the metal layer of the produced two-layer CCL was completely removed with a mixed solution of ferric chloride and hydrochloric acid, washed with water, and only the polyimide film was taken out. This polyimide film was immersed in TP-3000 having a liquid temperature of 50 ° C., and the time until the entire amount was dissolved was determined. The results are shown in Table 1.
- the nitrogen content of the polyimide film was 18.5 at%, the total dissolution time of the polyimide film was 14 min, the normal peel strength was 1.00 kN / m, and the heat-resistant peel strength was 0.83 kN / m.
- the nitrogen content in the polyimide film was 18.5 at%, the total dissolution time of the polyimide film was 14 min, the normal peel strength was 1.00 kN / m, and the heat-resistant peel strength was 0.83 kN / m.
- Example 2 In Example 2, the same process as in Example 1 was performed except that the normalized treatment intensity (glow treatment intensity) of plasma treatment was set to 0.5.
- the results are also shown in Table 1.
- the polyimide film had a nitrogen content of 16.6 at%, a total dissolution time of the polyimide film of 12 min, a normal peel strength of 0.190 kN / m, and a heat-resistant peel strength of 0.75 kN / m. .
- Example 3 was performed in the same manner as Example 1 except that the composition of the tie coat layer formed by sputtering was changed to Cr and a film thickness of 7 nm. The results are also shown in Table 1. As shown in Table 1, the polyimide film had a nitrogen content of 18.0 at%, a total dissolution time of the polyimide film of 14 min, a normal peel strength of 1.07 kN / m, and a heat-resistant peel strength of 0.80 kN / m. .
- Example 4 In Example 4, it carried out like Example 3 except having made the normalization process intensity
- Comparative Example 1 Comparative Example 1 was performed in the same manner as in Example 1 except that plasma treatment was not performed (untreated). The results are also shown in Table 1. As shown in Table 1, the nitrogen content of the polyimide film was 15.9 at%, the total dissolution time of the polyimide film was 6 min, the normal peel strength was 0.70 kN / m, and the heat-resistant peel strength was 0.30 kN / m. .
- Comparative Example 2 Comparative Example 2 was performed in the same manner as in Example 1 except that the plasma treatment gas type was oxygen. The results are also shown in Table 1. As shown in Table 1, the polyimide film had a nitrogen content of 4.0 at%, a total dissolution time of the polyimide film of 6 min, a normal peel strength of 1.00 kN / m, and a heat-resistant peel strength of 0.61 kN / m. .
- the nitrogen content in the polyimide film was significantly reduced, the hydrolysis of the polyimide film progressed, the dissolution time was shortened, and the stability of the polyimide film was lost. Moreover, heat-resistant peel strength fell and it was not suitable as a two-layer copper clad laminated material.
- Comparative Example 3 Comparative Example 3 was performed in the same manner as Comparative Example 2 except that the plasma treatment normalization treatment intensity (glow treatment intensity) was set to 0.5.
- the results are also shown in Table 1.
- the polyimide film had a nitrogen content of 5.9 at%, a total dissolution time of the polyimide film of 6 min, a normal peel strength of 0.96 kN / m, and a heat-resistant peel strength of 0.56 kN / m. .
- the nitrogen content in the polyimide film was significantly reduced, the hydrolysis of the polyimide film progressed, the dissolution time was shortened, and the stability of the polyimide film was lost. Moreover, heat-resistant peel strength fell and it was not suitable as a two-layer copper clad laminated material.
- Comparative Example 4 Comparative Example 4 was performed in the same manner as Comparative Example 3 except that the composition of the tie coat layer formed by sputtering was Cr and the film thickness was 7 nm. The results are also shown in Table 1. As shown in Table 1, the polyimide film had a nitrogen content of 4.2 at%, a total dissolution time of the polyimide film of 6 min, a normal peel strength of 0.93 kN / m, and a heat-resistant peel strength of 0.60 kN / m. .
- the nitrogen content in the polyimide film was significantly reduced, the hydrolysis of the polyimide film progressed, the dissolution time was shortened, and the stability of the polyimide film was lost. Moreover, heat-resistant peel strength fell and it was not suitable as a two-layer copper clad laminated material.
- Comparative Example 5 Comparative Example 5 was performed in the same manner as Comparative Example 4 except that the normalized treatment intensity (glow treatment intensity) of plasma treatment was 0.5.
- the results are also shown in Table 1.
- the polyimide film had a nitrogen content of 6.0 at%, a total dissolution time of the polyimide film of 6 min, a normal peel strength of 1.00 kN / m, and a heat-resistant peel strength of 0.55 kN / m. .
- the nitrogen content in the polyimide film was significantly reduced, the hydrolysis of the polyimide film progressed, the dissolution time was shortened, and the stability of the polyimide film was lost. Moreover, heat-resistant peel strength fell and it was not suitable as a two-layer copper clad laminated material.
- the heat-resistant peel strength is 0.7 kN / m or more for Examples 1 to 4 of the present invention. ing. At this time, the etching time of the polyimide film is also long.
- the longer etching time of the polyimide film means that the polyimide film is modified by plasma treatment so that it is difficult to hydrolyze. I can say that. From the above, it can be seen that it is important to perform surface modification so as to increase the nitrogen content on the surface of the polyimide film in order to obtain good adhesion even when the tie coat layer thickness is 10 nm or less.
- the present invention relates to a two-layer copper-clad laminate (CCL material) in which a copper layer is formed on a polyimide film by sputtering and plating, in particular, two layers having a copper layer thickness of 5 ⁇ m or less and a polyimide film thickness of 12.5-50 ⁇ m.
- CCL material copper-clad laminate
- it exhibits good adhesion and adhesion after heat aging, which makes it possible to reduce obstacles when etching dry polyimide films in CCL materials. Therefore, it is applied to various small electronic substrates, particularly medical probe substrates and gas electron multipliers.
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Abstract
Description
このような用途でのCCLの製造工程には、銅層エッチング工程、プレス工程、ポリイミドフィルムのエッチング工程などがある。
このポリイミドフィルムのエッチング工程には、エッチング液を用いる湿式法とレーザー、イオンなどを照射する乾式法がある。
特に乾式法は、湿式法と比較する微細な加工が可能であり、また加工後の仕上がりが綺麗である特徴を持つ。
しかしながら、医療用プローブやガス電子増倍管などの用途においては、タイコート層の厚さはエッチング性の観点から10nm以下に抑える必要がある。
しかしながら、プラズマ処理による改質効果は、放電の形態や用いるガス種などで大きく異なっている。例えば、特許文献3では、「使用するポリイミドの改質処理前の窒素含有割合は、6.4at%以下であり、これが上限である。」と報告されている。
1)厚みが12.5~50μmであるポリイミドフィルムの片面又は両面に、窒素ガス雰囲気中でプラズマ処理を行った後、スパッタリング又は電解めっきをガス雰囲気中でのプラズマ処理によりポリイミドフィルムに窒素を含有させてポリイミドフィルム表面を改質し、非プラズマ処理のポリイミドフィルムに比べて当該ポリイミドフィルムのエッチング液による溶解を遅延させることを特徴とする2層銅張積層材、を提供する。
2)厚みが12.5~50μmであるポリイミドフィルムの片面又は両面に、窒素ガス雰囲気中でプラズマ処理を行った後、スパッタリング又は電解めっきにより厚みが1~5μmの銅層を形成した2層銅張積層材であって、プラズマ処理したポリイミドフィルムの表面がプラズマ処理の影響のないポリイミドフィルムの厚み方向の中心よりも増加した窒素を含有することを特徴とする2層銅張積層材、を提供する。
3)ポリイミドフィルム表面の加水分解を抑制する改質を行うことを特徴とする上記1)記載の2層銅張積層材。
4)ポリイミドフィルムの片面又は両面に銅層を形成する前に、該ポリイミドフィルムにスパッタリングによりNi、Cr、Ni-Cu合金又はNi-Cr合金のタイコート層を形成することを特徴とする上記1)~3)のいずれか一項に記載の2層銅張積層材。
5)前記タイコート層の厚みが10nm以下において、常態ピール強度が0.90kN/m以上、耐熱ピール強度が0.70kN/m以上であることを特徴とする上記1)~4)のいずれか一項に記載の2層銅張積層材、を提供する。
6)厚みが12.5~50μmであるポリイミドフィルムの片面又は両面に、窒素ガス雰囲気中でプラズマ処理を行った後、スパッタリング又は電解めっきにより厚みが1~5μmの銅層を形成する2層銅張積層材の製造方法であって、前記窒素ガス雰囲気中でのプラズマ処理によりポリイミドフィルムに窒素を含有させてポリイミドフィルム表面を改質し、非プラズマ処理のポリイミドフィルムに比べて当該ポリイミドフィルムのエッチング液による溶解を遅延させることを特徴とする2層銅張積層材の製造方法、を提供する。
7)厚みが12.5~50μmであるポリイミドフィルムの片面又は両面に、窒素ガス雰囲気中でプラズマ処理を行った後、スパッタリング又は電解めっきにより厚みが1~5μmの銅層を形成する2層銅張積層材の製造方法であって、プラズマ処理したポリイミドフィルムの表面がプラズマ処理の影響のないポリイミドフィルムの厚み方向の中心よりも窒素含有量を増加させることを特徴とする2層銅張積層材の製造方法、を提供する。
8)ポリイミドフィルム表面の加水分解を抑制する改質を行うことを特徴とする上記6)記載の2層銅張積層材製造方法。
9)ポリイミドフィルムの片面又は両面に銅層を形成する前に、該ポリイミドフィルムにスパッタリングによりNi、Cr、Ni-Cu合金又はNi-Cr合金のタイコート層を形成することを特徴とする上記6)~8)のいずれか一項に記載の2層銅張積層材の製造方法。
10)前記タイコート層の厚みが10nm以下において、常態ピール強度を0.90kN/m以上、耐熱ピール強度を0.70kN/m以上とすることを特徴とする上記6)~9)のいずれか一項に記載の2層銅張積層材の製造方法、を提供する。
銅張積層板の加工工程の一つに、ポリイミド(PI)フィルム加工工程がある。これはPIフィルムへの穴開け(スルーホール)やフライングリード部の形成時に実施される。つまり、不必要なPIフィルムを除去する工程である。PIフィルム加工工程(PIの除去方法)には、湿式処理と乾式処理がある。
銅張積層板の製造工程にあるPIフィルムの表面処理工程は、PIフィルムと銅層の密着性を向上されるためには必須の工程である。PIと銅層の密着性が低い場合、銅層エッチング時の回路流れなどの加工時の問題に加え、回路形成後の長期信頼も悪くなる。
形成された銅層は、後に行われる電解銅層形成のための種となることから、銅シード層と呼ばれる。また、スパッタリングによりサブミクロン程度の銅層を形成する前に、Ni、Cr、Ni-Cu合金又はNi-Cr合金からなるタイコート層をスパッタリングによりポリイミドフィルム表面に形成することができる。
本研究では、前記の通り医療用プローブやガス電子増倍管などの用途では、エッチング性の観点から、ポリイミドフィルム表面を改質し加水分解し難いポリイミドフィルムの状態を形成した。具体的には下記の実施例に示すが、ポリイミドフィルム表面の窒素含有量を増やすことで加水分解し難いポリイミドフィルム表面を形成できることが分かった。
ポリイミドフィルム表面へのプラズマ処理によって、プラズマ処理しないポリイミドフィルムよりも窒素含有量を増加させる。下記の実施例に示すように、ポリイミドフィルム表面の改質により、常態ピール強度及び耐熱ピール強度が増加する効果を得ることができるが、わずかな量、すなわち未処理ポリイミドフィルムに比べて窒素が1%増加するだけでも、その効果がある。
すなわち、2層銅張積層材の銅層を除去して現れたポリイミドフィルムの表面の窒素含有量を測定、その後、ポリイミドフィルムの厚み方向に半分を除去して窒素含有量を測定する。含有量は表面をXPSで分析し、光電子スペクトルから求めた。
本発明の2層CCL材料に使用されるポリイミドフィルムは、本発明を達成できるものであれば特に限定されないが、好ましくはBPDA-PPD系ポリイミドフィルムを用いるのが有効である。
ポリイミドフィルム(東レ・デェポン社製、Kapton)の厚さ25μm品を使用し、プラズマ処理、スパッタリング及びメッキ処理により、厚さ5μmの銅層を形成した。
プラズマ処理には窒素ガスのグロー放電を用いて以下の条件でプラズマグロー処理を施した。この時のガス圧は9Paで、規格化処理強度(グロー処理強度)は1である。その後、スパッタリングによってタイコート層NiCr(20wt%)を10nm、銅シード層を20 nm形成し、電解めっきによって銅層18μmを形成した。
実施例2では、プラズマ処理の規格化処理強度(グロー処理強度)を0.5にしたこと以外は、実施例1と同様に行った。この結果を、同様に表1に示す。
表1に示すように、ポリイミドフィルムの窒素含有量が16.6at%、ポリイミドフィルムの全量溶解時間が12min、常態ピール強度が01.90kN/m、耐熱ピール強度が0.75kN/mとなった。
実施例3では、スパッタリングによって成膜するタイコート層の組成をCr、膜厚7nmにしたこと以外は、実施例1と同様に行った。この結果を、同様に表1に示す。
表1に示すように、ポリイミドフィルムの窒素含有量が18.0at%、ポリイミドフィルムの全量溶解時間が14min、常態ピール強度が1.07kN/m、耐熱ピール強度が0.80kN/mとなった。
実施例4では、プラズマ処理の規格化処理強度を0.5にしたこと以外は、実施例3と同様に行った。この結果を、同様に表1に示す。
表1に示すように、ポリイミドフィルムの窒素含有量が17.2at%、ポリイミドフィルムの全量溶解時間が12min、常態ピール強度が1.10kN/m、耐熱ピール強度が0.73kN/mとなった。
比較例1では、プラズマ処理を行わないこと(未処理)以外は、実施例1と同様に行った。この結果を、同様に表1に示す。
表1に示すように、ポリイミドフィルムの窒素含有量が15.9at%、ポリイミドフィルムの全量溶解時間が6min、常態ピール強度が0.70kN/m、耐熱ピール強度が0.30kN/mとなった。
比較例2では、プラズマ処理のガス種を酸素にしたこと以外は、実施例1と同様に行った。この結果を、同様に表1に示す。
表1に示すように、ポリイミドフィルムの窒素含有量が4.0at%、ポリイミドフィルムの全量溶解時間が6min、常態ピール強度が1.00kN/m、耐熱ピール強度が0.61kN/mとなった。
比較例3では、プラズマ処理の規格化処理強度(グロー処理強度)を0.5にしたこと以外は、比較例2と同様に行った。この結果を、同様に表1に示す。
表1に示すように、ポリイミドフィルムの窒素含有量が5.9at%、ポリイミドフィルムの全量溶解時間が6min、常態ピール強度が0.96kN/m、耐熱ピール強度が0.56kN/mとなった。
比較例4では、スパッタリングによって成膜するタイコート層の組成をCrとし、膜厚を7nmにしたこと以外は、比較例3と同様に行った。この結果を、同様に表1に示す。
表1に示すように、ポリイミドフィルムの窒素含有量が4.2at%、ポリイミドフィルムの全量溶解時間が6min、常態ピール強度が0.93kN/m、耐熱ピール強度が0.60kN/mとなった。
比較例5では、プラズマ処理の規格化処理強度(グロー処理強度)を0.5にしたこと以外は、比較例4と同様に行った。この結果を、同様に表1に示す。
表1に示すように、ポリイミドフィルムの窒素含有量が6.0at%、ポリイミドフィルムの全量溶解時間が6min、常態ピール強度が1.00kN/m、耐熱ピール強度が0.55kN/mとなった。
以上から、タイコート層厚みが10nm以下においても、良好な密着性を得るためには、ポリイミドフィルム表面の窒素含有量を増やすように表面改質を行うことが重要であることが分かる。
Claims (10)
- 厚みが12.5~50μmであるポリイミドフィルムの片面又は両面に、窒素ガス雰囲気中でプラズマ処理を行った後、スパッタリング又は電解めっきにより厚みが1~5μmの銅層を形成した2層銅張積層材であって、前記窒素ガス雰囲気中でのプラズマ処理によりポリイミドフィルムに窒素を含有させてポリイミドフィルム表面を改質し、非プラズマ処理のポリイミドフィルムに比べて当該ポリイミドフィルムのエッチング液による溶解を遅延させることを特徴とする2層銅張積層材。
- 厚みが12.5~50μmであるポリイミドフィルムの片面又は両面に、窒素ガス雰囲気中でプラズマ処理を行った後、スパッタリング又は電解めっきにより厚みが1~5μmの銅層を形成した2層銅張積層材であって、プラズマ処理したポリイミドフィルムの表面がプラズマ処理の影響のないポリイミドフィルムの厚み方向の中心よりも増加した窒素を含有することを特徴とする2層銅張積層材。
- ポリイミドフィルム表面の加水分解を抑制する改質を行うことを特徴とする請求項1記載の2層銅張積層材。
- ポリイミドフィルムの片面又は両面に銅層を形成する前に、該ポリイミドフィルムにスパッタリングによりNi、Cr、Ni-Cu合金又はNi-Cr合金のタイコート層を形成することを特徴とする請求項1~3のいずれか一項に記載の2層銅張積層材。
- 前記タイコート層の厚みが10nm以下において、常態ピール強度が0.90kN/m以上、耐熱ピール強度が0.70kN/m以上であることを特徴とする請求項1~4のいずれか一項に記載の2層銅張積層材。
- 厚みが12.5~50μmであるポリイミドフィルムの片面又は両面に、窒素ガス雰囲気中でプラズマ処理を行った後、スパッタリング又は電解めっきにより厚みが1~5μmの銅層を形成する2層銅張積層材の製造方法であって、前記窒素ガス雰囲気中でのプラズマ処理によりポリイミドフィルムに窒素を含有させてポリイミドフィルム表面を改質し、非プラズマ処理のポリイミドフィルムに比べて当該ポリイミドフィルムのエッチング液による溶解を遅延させることを特徴とする2層銅張積層材の製造方法。
- 厚みが12.5~50μmであるポリイミドフィルムの片面又は両面に、窒素ガス雰囲気中でプラズマ処理を行った後、スパッタリング又は電解めっきにより厚みが1~5μmの銅層を形成する2層銅張積層材の製造方法であって、プラズマ処理したポリイミドフィルムの表面がプラズマ処理の影響のないポリイミドフィルムの厚み方向の中心よりも窒素含有量を増加させることを特徴とする2層銅張積層材の製造方法。
- ポリイミドフィルム表面の加水分解を抑制する改質を行うことを特徴とする請求項6記載の2層銅張積層材製造方法。
- ポリイミドフィルムの片面又は両面に銅層を形成する前に、該ポリイミドフィルムにスパッタリングによりNi、Cr、Ni-Cu合金又はNi-Cr合金のタイコート層を形成することを特徴とする請求項6~8のいずれか一項に記載の2層銅張積層材の製造方法。
- 前記タイコート層の厚みが10nm以下において、常態ピール強度を0.90kN/m以上、耐熱ピール強度を0.70kN/m以上とすることを特徴とする請求項6~9のいずれか一項に記載の2層銅張積層材の製造方法。
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JP2012556823A JPWO2012108264A1 (ja) | 2011-02-10 | 2012-01-25 | 2層銅張積層材及びその製造方法 |
KR1020137020851A KR20130118362A (ko) | 2011-02-10 | 2012-01-25 | 2 층 구리 피복 적층재 및 그 제조 방법 |
EP12744227.5A EP2674508A1 (en) | 2011-02-10 | 2012-01-25 | Two-layered copper-clad laminate material, and method for producing same |
CN201280008604XA CN103392024A (zh) | 2011-02-10 | 2012-01-25 | 双层覆铜层压材料及其制造方法 |
US13/984,175 US20140017513A1 (en) | 2011-02-10 | 2012-01-25 | Two-Layered Copper-Clad Laminate Material, and Method for Producing Same |
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Cited By (5)
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CN103014626A (zh) * | 2012-12-17 | 2013-04-03 | 常州大学 | 纳米多孔铜薄膜的制备方法 |
JP2015146358A (ja) * | 2014-01-31 | 2015-08-13 | 住友金属鉱山株式会社 | 送受電コイル及びその製造方法 |
KR20160098594A (ko) * | 2015-02-09 | 2016-08-19 | 도레이첨단소재 주식회사 | 양면 금속적층 필름의 제조방법 및 그로부터 제조되는 양면 금속적층 필름 |
JP2018135561A (ja) * | 2017-02-21 | 2018-08-30 | 住友金属鉱山株式会社 | 銅張積層基板とその製造方法、並びに配線基板 |
JP2022103918A (ja) * | 2020-12-28 | 2022-07-08 | ロック技研工業株式会社 | 樹脂シート表面処理方法及び樹脂シート表面処理装置 |
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KR102680283B1 (ko) * | 2016-08-29 | 2024-07-03 | 한국재료연구원 | 구리 박막 기판 및 이의 제조방법 |
CN106350843B (zh) * | 2016-10-11 | 2018-07-10 | 上海瑞尔实业有限公司 | 一种用于塑料电镀的前处理方法 |
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- 2012-01-25 US US13/984,175 patent/US20140017513A1/en not_active Abandoned
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Also Published As
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US20140017513A1 (en) | 2014-01-16 |
EP2674508A1 (en) | 2013-12-18 |
KR20130118362A (ko) | 2013-10-29 |
TW201250015A (en) | 2012-12-16 |
CN103392024A (zh) | 2013-11-13 |
JPWO2012108264A1 (ja) | 2014-07-03 |
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