WO2010027052A1 - キャリア付き極薄銅箔、並びに銅貼積層板またはプリント配線基板 - Google Patents
キャリア付き極薄銅箔、並びに銅貼積層板またはプリント配線基板 Download PDFInfo
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- WO2010027052A1 WO2010027052A1 PCT/JP2009/065511 JP2009065511W WO2010027052A1 WO 2010027052 A1 WO2010027052 A1 WO 2010027052A1 JP 2009065511 W JP2009065511 W JP 2009065511W WO 2010027052 A1 WO2010027052 A1 WO 2010027052A1
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- Prior art keywords
- copper foil
- carrier
- ultrathin copper
- foil
- release layer
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/20—Separation of the formed objects from the electrodes with no destruction of said electrodes
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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
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
-
- 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
-
- 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
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/04—Wires; Strips; Foils
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
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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
-
- 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
- H05K3/025—Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates by transfer of thin metal foil formed on a temporary carrier, e.g. peel-apart copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
-
- 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
- H05K2203/03—Metal processing
- H05K2203/0315—Oxidising metal
-
- 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]
-
- 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
- the present invention relates to an ultrathin copper foil with a carrier, and a printed wiring board using the ultrathin copper foil with a carrier, and in particular, an ultrathin copper foil with a carrier suitable for use at a high temperature of 300 ° C. or more.
- the present invention relates to a wiring board using a copper foil.
- copper foil used for printed wiring boards that are the basis of printed wiring boards, multilayer printed wiring boards, chip-on-film wiring boards, etc.
- the anchor effect with respect to the board is exhibited on the surface, and the bonding strength between the board and the copper foil is increased to ensure the reliability as a printed wiring board.
- ultra-thin copper foil such a thin copper foil of 9 ⁇ m or less (hereinafter sometimes referred to as “ultra-thin copper foil”) has a low mechanical strength, easily causes wrinkles and creases during the production of a printed wiring board, and cuts the copper foil.
- an ultra-thin copper foil used for fine pattern applications an ultra-thin copper foil layer was directly electrodeposited on one side of a metal foil (hereinafter referred to as carrier foil) as a carrier via a release layer.
- carrier foil hereinafter referred to as carrier foil
- An ultra-thin copper foil with a carrier is used.
- the copper foil having a thickness of 5 ⁇ m or less which is currently used as described above is provided as this ultrathin copper foil with a carrier.
- the ultrathin copper foil with a carrier is formed by forming a peeling layer and an ultrathin copper foil by electrolytic copper plating in this order on one side of the carrier foil, and the outermost surface of the ultrathin copper foil made of the electrolytic copper plating Has a roughened surface. Then, after superposing the roughened surface on the resin base material, the whole is thermocompression bonded, and then the carrier foil is peeled and removed to form a copper clad laminate, and the ultrathin copper foil on the surface of the copper clad laminate is formed. It is used in the form of forming a predetermined wiring pattern.
- the carrier foil When the carrier foil is peeled off after thermocompression bonding of the ultrathin copper foil to the resin base material, if the thickness of the ultrathin copper foil is less than 5 ⁇ m, the deformation of the ultrathin copper foil becomes a problem. Therefore, it is necessary to lower and stabilize the peel strength (hereinafter, also referred to as carrier peel) when peeling the film and the ultrathin copper foil.
- carrier peel the peel strength
- the carrier foil functions as a reinforcing material for stably maintaining the shape of the ultrathin copper foil until the ultrathin copper foil is bonded to the resin base material.
- the peeling layer is a layer for improving peeling when separating the ultra-thin copper foil from the carrier foil, and by removing it integrally with the carrier foil, the carrier foil can be peeled cleanly and easily. It has become.
- a through-hole drilling and through-hole plating are sequentially performed on a copper-clad laminate with an ultra-thin copper foil bonded to a resin base material, and then etched into the ultra-thin copper foil on the surface of the copper-clad laminate. Processing is performed to form a wiring pattern having a desired line width and a desired line pitch, and finally, a solder resist is formed and other finishing processes are performed.
- the release layer to be formed on the carrier foil has conventionally been made of organic materials such as benzotriazole, inorganic materials such as metal oxides, or metal materials such as simple metal elements or alloys.
- organic materials such as benzotriazole
- inorganic materials such as metal oxides
- metal materials such as simple metal elements or alloys.
- the heating temperature in the press treatment of the copper foil and the resin or the curing treatment of the resin becomes high, and the organic release layer that becomes difficult to peel off due to an increase in the peel strength by this heat treatment
- a metal-based release layer is mainly used.
- Patent Document 1 As the metal for forming the metal-based release layer, Cr (Patent Document 1), Ni (Patent Documents 1 and 2), Ti (Patent Document 3), and the like have been proposed so far.
- the carrier peel depends on the ratio of the metal and oxide content in the release layer and the thickness of the oxide film formed on the metal surface. It is characterized by adjusting.
- the carrier peel is likely to vary due to the difference in the oxide content ratio and the thickness of the oxide film, making it difficult for the carrier peel to be stable and the problem of causing blisters.
- FIG. 3 schematically shows a carrier peel of a conventional copper foil with a carrier.
- 1 is an ultrathin copper foil
- 2 is a carrier foil
- 8 is a release layer
- 9 is a place where swelling occurs
- a dotted line is a peel strength. The weak part of each is shown.
- FIG. 3A shows a state where swelling occurs due to the presence of a weak adhesion portion between the ultrathin copper foil and the release layer
- FIG. 3B shows a variation in carrier peel, and there are some portions that are difficult to peel off.
- FIG. 3C shows a state in which the carrier peel varies and the carrier peel is not stable.
- the present invention aims to provide an ultrathin copper foil with a carrier that suppresses the occurrence of blistering and has a stable peel strength, and in particular, the carrier foil and the ultrathin copper even when placed in a high temperature environment.
- An object is to provide an ultrathin copper foil with a carrier that can be easily peeled off from the foil.
- the present invention provides a copper-laminated laminated substrate or printed wiring board that serves as a base material for printed wiring boards for fine patterns, multilayer printed wiring boards, chip-on-film wiring boards, etc., using the ultrathin copper foil with carrier. The purpose is to do.
- the ultrathin copper foil with a carrier of the present invention is an ultrathin copper foil with a carrier comprising a carrier foil, a release layer, and a copper foil, the release layer being a first release layer provided on the carrier foil side, and an ultrathin copper foil A second release layer provided on the side, a first interface between the carrier foil and the first release layer, a second interface between the electrolytic copper foil and the second release layer, a first release layer, There is a third interface with the second release layer, and the peel strength at the interface is first interface> third interface second interface> third interface.
- the release layer is composed of a metal A that maintains releasability and a metal B that facilitates plating of the ultrathin copper foil, and when the carrier foil and the ultrathin copper foil are peeled off
- the element ratio x of the metal A and the element ratio y of the metal B on the peeling surface on the ultrathin copper foil side are 10 ⁇ ⁇ y / (x + y) ⁇ ⁇ 100 ⁇ 80 It is the ratio of these.
- the thicknesses of the release layers remaining on the release surface on the carrier foil side and on the ultrathin copper foil side when the carrier foil and the ultrathin copper foil are peeled off are respectively d1 and d2. Then, 0.5 ⁇ d1 / d2 ⁇ 12 It is characterized by being.
- the third interface is preferably an oxide layer obtained by oxidizing the surface of the first release layer.
- the metal A constituting the release layer is preferably selected from the group of Mo, Ta, V, Mn, W, and Cr, and the metal B is preferably selected from the group of Fe, Co, and Ni.
- the total metal adhesion amount of the release layer is preferably 0.05 mg / dm 2 to 50 mg / dm 2 .
- the printed wiring board of the present invention is a copper-laminated laminated board or a printed wiring board, which is obtained by laminating an ultrathin copper foil with a carrier on the resin substrate, and particularly excellent in high density ultrafine wiring applications. .
- the present invention provides an ultra-thin copper foil with a carrier that has a stable carrier peel, is less likely to cause swelling, and can easily peel off the carrier foil and the ultra-thin copper foil even when placed in a high temperature environment. be able to.
- the present invention provides a copper-laminated laminated substrate or printed wiring board that serves as a base material for printed wiring boards for fine patterns, multilayer printed wiring boards, chip-on-film wiring boards, etc., using the ultrathin copper foil with carrier. can do.
- ultra-thin copper foil aluminum foil, aluminum alloy foil, stainless steel foil, titanium foil, titanium alloy foil, copper foil, copper alloy foil, etc.
- Carrier foils used for foils or ultra-thin copper alloy foils are electrolytic copper foils and electrolytic coppers from the viewpoint of easy handling. Alloy foil, rolled copper foil or rolled copper alloy foil is preferred. Further, it is preferable to use a foil having a thickness of 7 ⁇ m to 200 ⁇ m.
- the thickness of the carrier foil is preferably 7 ⁇ m to 200 ⁇ m.
- the carrier foil it is preferable to use a metal foil having a surface roughness of at least one surface of Rz: 0.01 ⁇ m to 5.0 ⁇ m.
- Rz It is preferably 0.01 ⁇ m to 2.0 ⁇ m. Therefore, when using a carrier foil having a surface roughness range of Rz: 2 ⁇ m to 5.0 ⁇ m when visibility such as for chip-on-film wiring boards is required, mechanical polishing or electrolytic polishing is performed on the rough surface in advance.
- the surface roughness is preferably smoothed to a range of Rz: 0.01 ⁇ m to 2 ⁇ m. Note that a carrier foil having a surface roughness Rz of 5 ⁇ m or more can be preliminarily mechanically polished and electrochemically dissolved and smoothed before use.
- the release layer is composed of a mixture of metal and a non-metal or metal oxide or alloy.
- the release layer of the present invention is composed of a metal A that maintains releasability and a metal B that facilitates plating of an ultrathin copper foil.
- the metal A constituting the release layer is selected from the group of Mo, Ta, V, Mn, W, and Cr.
- the metal B is selected from the group of Fe, Co, and Ni.
- the release layer is composed of a first release layer 3 provided on the carrier foil 2 side and a second release layer 4 provided on the ultrathin copper foil 1 side.
- the 1st interface 5 between the carrier foil 2 and the 1st peeling layer 3, the 2nd interface 7 between the ultrathin copper foil 1 and the 2nd peeling layer 4, and the 1st peeling layer 3 and the 2nd peeling A third interface 6 exists between each layer 4.
- the metal A that retains the releasability and the metal B that facilitates the plating of the ultrathin copper foil include the carrier foil 2 and the ultrathin copper foil 1 as schematically shown in FIG.
- the elemental ratio of metal A on the peeling surface 40 on the ultrathin copper foil 1 side when peeled is x and the elemental ratio of metal B is y, 10 ⁇ ⁇ y / (x + y) ⁇ ⁇ 100 ⁇ 80 (%) It is preferable to set the ratio.
- the carrier peel becomes too low and the bulge is likely to be generated and the plating may not be easily deposited on the release layer. If the above ratio is more than 80%, There arises a problem that the peel becomes too high to peel off the ultrathin copper foil. This ratio is particularly preferably 20 to 60%.
- the element ratio is the sum of the element ratios of the metals of the same group.
- FIG. 2 it can isolate
- FIG. 2 When the carrier foil 2 and the ultrathin copper foil 1 are separated, the thicknesses of the release layer 9 remaining on the carrier foil 2 side and the release layer 10 remaining on the release surface on the ultrathin copper foil 1 side are d1 and d2, respectively. Then, 0.5 ⁇ d1 / d2 ⁇ 12 It is preferable that the ratio is
- the ratio is greater than 12, the adhesion between the ultrathin copper foil and the release layer becomes too low and bulges are likely to occur, and if the ratio is less than 0.5, it remains on the surface of the ultrathin copper foil. Since the peeling layer to be thickened, there arises a problem that etching properties are inferior when a circuit is formed on a copper clad laminate formed by attaching an ultrathin copper foil.
- This ratio is particularly preferably 2 to 10.
- Each of the release layers can be formed by electrolytic plating as will be described later.
- the metal composition of each release layer can be changed by changing the plating conditions, for example, changing the current density, without intentionally changing the electrolytic bath composition.
- the metal composition of each release layer can be changed by changing the composition of the electrolytic bath.
- the peel strength at the third interface existing between the first peel layer and the second peel layer is lower than that of either the first interface or the second interface.
- the reason why the peel strength at the third interface is lowered and the peel strength at the first interface and the second interface is thus increased is that the ultrathin copper foil and the carrier foil are peeled at the third interface, This is to prevent the occurrence of blisters at the two interfaces and to provide stable peeling during carrier peeling.
- a method of forming the third interface between the first release layer and the second release layer for example, a method in which the formation of the release layer is divided into two times is preferable, or the plating tank is set to two tanks. It is also preferable to use a method such as plating at intervals or changing the current density in electrolytic plating.
- the surface of the first release layer is oxidized to form an oxide layer, and then the second release layer is formed on the oxide layer, whereby the first release layer is formed. Since the adhesiveness at the third interface between the layer and the second release layer can be reduced and a more stable peel strength can be obtained at the time of carrier peeling, the effect of the present invention can be further enhanced.
- Examples of a method for forming an oxide layer on the surface of the first release layer include a technique of increasing the current density in a treatment solution containing an oxidizing chemical such as hydrogen peroxide, anodic electrolytic treatment, and electrolytic plating. Can be used.
- the adhesion amount of the release layer to be adhered is 0.05 mg / dm 2 to 50 mg / dm 2 It is preferable that An adhesion amount of 0.05 mg / dm 2 or less is unsuitable because it does not perform a sufficient function as a release layer, and even if it is 50 mg / dm 2 or more, it can be peeled off.
- the metal species to be formed is a metal that is difficult to plate, and if it is thick, the smoothness is lost, the peeling force varies, the stability is lost, and it may cause blistering, so it is preferably 50 mg / dm 2 or less. Preferably there is.
- the upper limit is preferably 20 mg / dm 2 or less.
- the ultrathin copper foil is formed by electrolytic plating on the release layer using a copper sulfate bath, a copper pyrophosphate bath, a copper sulfamate bath, a copper cyanide bath, or the like.
- a copper sulfate bath a copper pyrophosphate bath
- a copper sulfamate bath a copper cyanide bath
- the plating solution pH immediately after metal plating etc.
- the thickness of the copper plating deposited by strike plating is preferably 0.01 ⁇ m to 0.5 ⁇ m, and the conditions vary depending on the type of bath.
- the current density is 0.1 A / dm 2 to 20 A / dm 2
- the plating time is Is preferably 0.1 seconds or longer.
- the current density is 0.1 A / dm 2 or less, it is difficult to uniformly deposit the plating on the release layer, and when the current density is 20 A / dm 2 or more, the burn plating is generated in the strike plating in which the metal concentration of the plating solution is reduced. In addition, a uniform copper plating layer cannot be obtained, which is not preferable.
- the thickness of the copper plating formed on the release layer by strike plating needs to be a thickness that does not impair the peelability of the release layer, and is preferably 0.01 to 0.5 ⁇ m. After forming this strike plating layer, copper plating is performed to a desired thickness to obtain an ultrathin copper foil.
- the surface of the second release layer is dissolved and removed thinly by etching, and then copper plating is also used to prevent pinholes and blisters. effective.
- the etching treatment of the second release layer is not performed, when the carrier foil provided with the second release layer is immersed in the plating solution for forming the ultrathin copper foil, the surface of the second release layer Oxide present in the film is dissolved and removed, and voids are likely to be formed at the second interface between the second release layer and the ultrathin copper foil, thereby inhibiting the deposition of the ultrathin copper foil and adhesion at the second interface. May decrease. In such a case, pinholes and blisters are likely to occur.
- the metal A and metal B oxides present on the surface of the second release layer are dissolved and removed. In addition, the adhesion is good. As a result, pinholes and blisters are prevented.
- the present invention in order to stabilize the heat resistance against the peelability of the release layer, it is effective to provide a diffusion prevention layer between the first release layer and the carrier foil or between the second release layer and the ultrathin copper foil. It is.
- the diffusion prevention layer is preferably formed of Ni or Co, or an alloy thereof. In addition, formation with Cr or Cr alloy is also effective.
- the surface of the ultrathin copper foil is subjected to a roughening treatment, and the roughness of the surface is Rz: 0.2 to 3.0 ( ⁇ m ).
- the roughening treatment if the roughness is 0.2 ( ⁇ m) or less, there is no effect on the adhesion, so it is meaningless to roughen. If the roughness is 3 ( ⁇ m), sufficient adhesion is achieved. This is because no further roughening is required.
- a metal such as Ni, Zn, or Cr that has an effect on rust prevention and heat resistance is deposited on the roughened surface. It is also effective to apply silane in order to improve the peel strength.
- the plating conditions for each example are as shown in Table 1.
- a first release layer was formed by plating. After transferring from the first plating tank to the second plating tank, a second release layer was formed by Mo—Co plating in the second plating tank.
- a third interface is formed on the surface of the first release layer.
- the release layers of Examples 1 to 8 were formed by appropriately adjusting the formation time of the first release layer or the second release layer.
- copper strike plating is performed to a thickness of 0.2 ⁇ m under the above ⁇ copper plating condition 1>, and then copper plating is performed according to the above ⁇ copper plating condition 3> to form a 3 ⁇ m thick electrode
- a thin copper foil was formed into an ultrathin copper foil with a carrier.
- Ni 0.5 mg / dm 2
- Zn 0.05 mg / dm 2
- Cr 0.3 mg / dm 2
- Example 9 An ultra-thin copper foil with a carrier was processed in the same manner as in Examples 1 to 8 except that it was immersed in the following oxidizing treatment liquid while being transferred from the first plating tank to the second plating tank.
- Sulfuric acid 10-30 g / dm 3
- Hydrogen peroxide solution 30-60 g / dm 3
- Bath temperature 10-30 ° C
- Example 10 An ultrathin copper foil with a carrier was obtained in the same manner as in Examples 1 to 8, except that a diffusion prevention layer by Ni plating was applied on the carrier foil under ⁇ Ni plating conditions> shown in Table 1.
- Examples 11 and 12 The formation of the first release layer and the second release layer was performed except that Mo-Ni plating and W-Ni plating were performed in ⁇ Mo-Ni plating conditions> ⁇ W-Ni plating conditions> described in Table 1, respectively. The same treatment as in Examples 1 to 8 was performed to obtain an ultrathin copper foil with a carrier.
- Example 13> An ultrathin copper foil with a carrier was obtained in the same manner as in Examples 1 to 8, except that the ultrathin copper foil was formed by copper plating according to the above ⁇ copper plating condition 2>.
- the first release layer is formed on the carrier foil by Mo-Co plating, and then the copper strike plating is performed without forming the second release layer. An ultrathin copper foil was obtained.
- Samples for evaluation of carrier peel of the ultrathin copper foil with carrier prepared in the above Examples and Comparative Examples were prepared and evaluated as follows.
- (1) Sample for carrier peel measurement and blister confirmation Ultra thin copper foil with carrier (Example, Conventional Example, Comparative Example) is cut into 250 mm length and 250 mm width, and then heated at 350 ° C. for 10 minutes to confirm blister A sample was created.
- the resin substrate was affixed with the double-sided tape on the ultra-thin copper foil side of the heat-treated sample, and a single-sided copper-clad laminate for polyimide carrier peel measurement with a carrier foil was obtained.
- Samples with heating temperatures of 300 ° C. and 400 ° C. were also prepared for evaluation of heat resistance.
- (C) Pinhole confirmation The sample for pinhole confirmation was irradiated with light from the bottom, and the number of visible light was counted as the number of pinholes. Table 4 shows the measurement results.
- the maximum value of the element ratio of the metal A is obtained from the surface to the inside, and the thickness up to the depth that becomes a ratio of 1/2 of the value is determined as the residual of the release layer.
- the thicknesses are d1 and d2, respectively, and the measurement results are shown in Table 2.
- the ultra-thin copper foils with carriers of Examples 1 to 13 have a low carrier peel and few bulges and pinholes. Further, when compared with the presence or absence of the diffusion prevention layer (Example 10 and Example 1), as shown in Table 5, the carrier peel is kept lower when the diffusion prevention layer is present, and the presence of the diffusion prevention layer , Heat resistance is improved.
- a surface-treated foil was prepared in which nickel, zinc, and chromium were sequentially attached to the surface of the ultrathin copper foil with a carrier produced in the above-described example by the general treatment method. After applying polyamic acid varnish to this surface-treated foil and drying it stepwise so as not to cause foaming, it is heated at 330 ° C. for 30 minutes in a nitrogen atmosphere to imidize to give a 25 ⁇ m thick polyimide.
- the present invention suppresses the occurrence of swelling at the peeling layer interface without affecting the carrier peel, and can easily peel off the carrier foil and the ultrathin copper foil even when placed in a high temperature environment.
- An ultra-thin copper foil with a carrier can be provided.
- the present invention uses the above-mentioned ultra-thin copper foil with a carrier, a copper-laminated laminated board with stable manufacturing quality, a printed wiring board as a printed wiring board for fine patterns, a multilayer printed wiring board, a wiring board for chip-on-film, etc. It has an excellent effect that can be provided as a base material.
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Electroplating Methods And Accessories (AREA)
- Parts Printed On Printed Circuit Boards (AREA)
Abstract
Description
このようなファインパターンプリント配線板用の銅箔として、厚い銅箔を用いると、エッチングによる配線回路形成時のエッチング時間が長くなり、その結果、形成される配線パターンの側壁の垂直性が崩れ、形成する配線パターンの配線線幅が狭い場合には断線に結びつくこともある。従って、ファインパターン用途に使われる銅箔としては、厚さ9μm以下の銅箔が要望され、現在では、厚さが5μm以下の銅箔も多く使用されている。
キャリア付き極薄銅箔は、キャリア箔の片面に、剥離層と電気銅めっきによる極薄銅箔がこの順序で形成されたものであり、該電気銅めっきからなる極薄銅箔の最外層表面が粗化面に仕上げられている。そして、該粗化面を樹脂基材に重ね合わせたのち全体を熱圧着し、ついでキャリア箔を剥離除去することにより銅張積層板を形成し、銅張積層板の表面の極薄銅箔に所定の配線パターンを形成するという態様で使用されている。
極薄銅箔を樹脂基材に熱圧着した後にキャリア箔を引き剥がす際に、極薄銅箔の厚さが5μmよりも薄いものになると極薄銅箔の変形が問題となるため、キャリア箔と極薄銅箔とを引き剥がす際の剥離強度(以下、キャリアピールと云うことがある)を低くかつ安定させることが必要とされている。
樹脂基材に極薄銅箔が接合された銅張積層板には、スルーホールの穿設及びスルーホールめっきが順次行われ、次いで、該銅張積層板の表面にある極薄銅箔にエッチング処理を施して所望の線幅と所望の線間ピッチを備えた配線パターンを形成し、最後に、ソルダレジストの形成やその他の仕上げ処理が行われる。
これらの提案では、剥離層を構成する金属の一部を酸化物の状態としており、剥離層における金属と酸化物の含有量の比率や、金属表面に形成した酸化物皮膜の厚さによりキャリアピールを調節することを特徴としている。しかしながら、酸化物含有量の比率や酸化物皮膜の厚さの差によりキャリアピールにバラツキが生じやすく、キャリアピールが安定しにくい問題やフクレが発生する問題があった。
さらに、酸化物の表面においては電気銅めっきによる析出が起こりにくく、剥離層上へ均一にめっきを施すことが難しいことから、極薄銅箔の厚さのバラツキやピンホール発生などの問題が生じることもあった。
また本発明は、前記キャリア付き極薄銅箔を使用したファインパターン用途のプリント配線板、多層プリント配線板、チップオンフィルム用配線板等の基材となる銅貼積層基板あるいはプリント配線基板を提供することを目的とする。
第一界面>第三界面
第二界面>第三界面
である。
10≦{y/(x+y)}×100≦80
の比率であることを特徴とする。
0.5≦d1/d2≦12
であることを特徴とする。
前記剥離層を構成する金属AとしてはMo,Ta,V,Mn,W,Crの群から選択する。また、金属BはFe,Co,Niの群から選択する。
10≦{y/(x+y)}×100≦80(%)
の比率とすることが好ましい。
0.5≦d1/d2≦12
の比率であることが好ましい。
第一剥離層と第二剥離層との間に第三界面を形成する方法としては、例えば、剥離層の形成を2回に分けて行う方法が好ましく、または、めっき槽を2槽とすることやインターバルをおいてめっきすること、電解めっきにおける電流密度を変化させる等の手法を用いることも好ましい方法である。
第一剥離層の表面に酸化物層を形成する方法としては、例えば、過酸化水素等の酸化性の薬品を含む処理液への浸漬やアノード電解処理、電解めっきにおける電流密度を高める等の手法を用いることができる。
0.05mg/dm2~50mg/dm2
であることが好ましい。
付着量が0.05mg/dm2以下では、剥離層としての十分な機能を果たさないことから不適であり、また、50mg/dm2以上であっても剥がすことは可能であるが、剥離層を形成する金属種は、めっきし難い金属であり厚くすると平滑性が失われ剥離力にバラツキがみられ、安定性がなくなり、フクレの原因にもなりかねないため、好ましくは50mg/dm2以下であることが好ましい。更に、極薄銅箔の表面の平滑性も考慮すると上限を20mg/dm2以下とすることが好ましい。
なお、極薄銅箔の形成に際しては、剥離層を構成する元素によっては、めっき液中のディップ時間・電流値、めっき仕上げのめっき液切り・水洗、金属めっき直後のめっき液pHなどが剥離層の残存状態を決定するため、めっき浴種については剥離層を構成する元素との関係で選択する必要がある。
ストライクめっきにより剥離層上に形成する銅めっき厚は、剥離層の剥離性を損なわない厚さとすることが必要であり、0.01~0.5μmとすることが好ましい。このストライクめっき層を形成した後、所望の厚さに銅めっきを行い、極薄銅箔とする。
第二剥離層のエッチング処理を行わない場合には、極薄銅箔を形成するためのめっき液中に、第二剥離層を設けたキャリア箔が浸漬された際に、第二剥離層の表面に存在する酸化物が溶解除去されて、第二剥離層と極薄銅箔との間の第二界面において空隙が生じやすくなり、極薄銅箔のめっき析出の阻害や第二界面における密着性低下のおそれがある。このような場合、ピンホールやフクレが発生しやすくなる。
一方、エッチング処理を施した場合には、第二剥離層の表面に存在する金属Aおよび金属Bの酸化物が溶解除去されるため、エッチング後の表面においては正常なめっき析出となり、第二界面における密着性も良好となる。この結果、ピンホールやフクレが防止される。
最後に、粗化処理した表面上に防錆及び耐熱性に効果があるNi、Zn、Cr等の金属を付着させる。またピール強度を向上させるためシランを塗布することも効果的である。
キャリア箔→Mo-Coめっき(第一剥離層)→Mo-Coめっき(第二剥離層)→銅ストライクめっき→銅めっき(極薄銅箔)によるキャリア付き極薄銅箔の製造。
片面がRz:0.8μmの銅箔(厚さ:31μm)をキャリア箔とし、該キャリア箔上に表1に記した<Mo-Coめっき条件>にて第一のめっき槽中においてMo-Coめっきにより第一剥離層を形成した。第一のめっき槽から第二のめっき槽中へと移送した後に、第二のめっき槽中においてMo-Coめっきにより第二剥離層を形成した。第一のめっき槽から第二のめっき槽へと移送されるまでの間に、第一剥離層の表面には第三界面が形成される。この第一剥離層あるいは第二剥離層の形成時間を適宜調整することにより、実施例1~8の剥離層を形成した。
次いで、この第二剥離層上に前記<銅めっき条件1>で0.2μm厚さに銅ストライクめっきを施し、その上に前記<銅めっき条件3>により銅めっきを行い、3μm厚さの極薄銅箔を形成してキャリア付き極薄銅箔とした。
なお、各種評価に供する試料については、極薄銅箔側の表面にNi:0.5mg/dm2、Zn:0.05mg/dm2、Cr:0.3mg/dm2を付着させ、その後でシランカップリング処理する表面処理を施した。
第一のめっき槽から第二のめっき槽へ移送される間に、下記の酸化性処理液への浸漬を行った他は、実施例1~8と同様に処理してキャリア付き極薄銅箔を得た。
硫酸 :10~30g/dm3
過酸化水素水 :30~60g/dm3
浴温 :10~30℃
キャリア箔上に表1に記した<Niめっき条件>にてNiめっきによる拡散防止層を施した他は、実施例1~8と同様に処理してキャリア付き極薄銅箔を得た。
第一剥離層および第二剥離層の形成を、それぞれ表1に記した<Mo-Niめっき条件><W-Niめっき条件>にてMo-NiめっきおよびW-Niめっきを施した他は、実施例1~8と同様に処理してキャリア付き極薄銅箔を得た。
極薄銅箔の形成を前記<銅めっき条件2>による銅めっきとした他は、実施例1~8と同様に処理してキャリア付き極薄銅箔を得た。
キャリア箔の上にMo-Coめっきにより第一剥離層を形成した後に、第二剥離層を形成せずに銅ストライクめっきを施した他は、実施例1~8と同様に処理してキャリア付き極薄銅箔を得た。
第一のめっき槽から第二のめっき槽へと移送されるまでの、第一剥離層あるいは第二剥離層の形成時間を、実施例1~8に比して過度に長く、あるいは短くした他は、実施例1~8と同様に処理してキャリア付き極薄銅箔を得た。
上記実施例及び比較例で作製したキャリア付き極薄銅箔のキャリアピールの評価用サンプルを下記のように作成し評価した。
(1)キャリアピールの測定及びフクレ確認用サンプル
キャリア付き極薄銅箔(実施例、従来例、比較例)を、縦250mm、横250mmに切断したのち、温度350℃、10分間加熱しフクレ確認用のサンプルを作成した。
また、上記加熱処理したサンプルの極薄銅箔側に、両面テープで樹脂基板を貼り付け、キャリア箔付きのポリイミドキャリアピール測定用片面銅張積層板とした。
なお、耐熱性の評価用として加熱温度を300℃、400℃としたサンプルも作成した。
キャリア付き極薄銅箔(実施例、従来例、比較例)を、縦250mm、横250mmに切断し、透明テープを極薄銅箔側に貼り付け、極薄銅箔をキャリア箔から剥離してピンホール確認用のサンプルとした。
(1)キャリアピールの測定方法とフクレの確認
(a)フクレの確認
キャリア箔上の極薄銅箔が膨れているかどうかを目視で観察し、フクレの数を数えた。その結果を表4に示す。
(b)キャリアピールの測定
上記により作製したキャリアピール測定用試料を、JISC6511に規定する方法に準拠して、測定試料幅10mmでキャリア箔から極薄銅箔を引き剥がし、キャリアピール(ピール強度)をn数3で測定した。評価結果を表4に示す。
上記ピンホール確認用サンプルに下から光をあて、光が見える数を数えピンホール数とした。測定結果を表4に示す。
(d)耐熱性の評価
上記キャリアピール測定用試料の作製において、加熱条件を300℃、350℃、400℃で10分間とした試料を、JISC6511に規定する方法に準拠して、測定試料幅10mmでキャリア箔から極薄銅箔を引き剥がし、キャリアピール(ピール強度)をn数3で測定した。評価結果を表5に示す。
キャリア箔と極薄銅箔とを剥離し、キャリア箔側および極薄銅箔側のそれぞれの剥離表面において、AES分析装置を用いて、表面から内部へと深さ方向の分析を行った。
その結果の一例として、極薄銅箔側の深さ方向分析結果を図4に示す。
極薄銅箔側の分析結果において、表面における金属Aの元素比および金属Bの元素比率を、それぞれxおよびy(%)とし、その測定結果を表2に示す。
また、キャリア箔側および極薄銅箔側の分析において、表面から内部にかけて金属Aの元素比率の最大値を求め、その値の1/2の比率となる深さまでの厚さを剥離層の残留厚さとし、それぞれd1およびd2とし、その測定結果を表2に示す。
比較例のキャリア付き極薄銅箔のうち、剥離層が2層で構成された場合でも、キャリア箔2と極薄銅箔1とを剥離した際の極薄銅箔1側の剥離表面における金属Aの元素比xと金属Bの元素比yとの比率{y/(x+y)}が極端に小さい場合(比較例1、2)やキャリア箔側の剥離層および極薄銅箔側の剥離層の表面に残留したそれぞれの剥離層の厚さd1およびd2の比率(d1/d2)が極端に大きい場合(比較例4、5)においては、第二界面における剥離強度が過度に低いために、界面における剥離強度が「第二界面<第三界面」となってしまうことにより、フクレやピンホールが発生して好ましくない。
また、比率{y/(x+y)}が極端に大きすぎる場合(比較例3)においては、フクレやピンホール発生はないものの、第三界面における剥離強度が過度に高いために、界面における剥離強度が「第二界面<第三界面」となり、キャリアピールが高くなりすぎて本発明の適用基準から外れたものとなる恐れがある。
前記実施例で作製したキャリア付き極薄銅箔の極薄銅箔側の表面に、一般的な処理方法にて順次ニッケル、亜鉛、クロムを付着させた表面処理箔を作製した。この表面処理箔に、ポリアミック酸ワニスを塗布し、発泡が起こらないように段階的に乾燥した後、窒素雰囲気下において330℃で30分間の加熱を行ってイミド化することにより、25μm厚のポリイミド系フレキシブル銅張積層板を作成した。
このポリイミド系フレキシブル銅張積層板よりキャリア箔を剥離除去した後、極薄銅箔にドライフィルムレジストを用いてパターン加工を施して、プリント配線基板を作製した。
この配線基板では、配線部の高いピール強度を維持しつつ、配線ピッチL/S=20/20のファインパターンを形成することができ、配線の直線性も良好であった。また、絶縁信頼性にも問題は見られなかった。
また本発明は、前記キャリア付き極薄銅箔を使用し、製造品質が安定した銅貼積層板、プリント配線基板をファインパターン用途のプリント配線板、多層プリント配線板、チップオンフィルム用配線板等の基材として提供することができる、優れた効果を有するものである。
2 キャリア箔
3 第一剥離層
4 第二剥離層
5 第一界面
6 第三界面
7 第二界面
Claims (12)
- キャリア箔、剥離層、極薄銅箔からなるキャリア付き極薄銅箔であって
前記剥離層はキャリア箔側に設ける第一剥離層と、極薄銅箔側に設ける第二剥離層とからなり、前記キャリア箔と第一剥離層との間の第一界面と、電解銅箔と第二剥離層との間の第二界面と、第一剥離層と第二剥離層との間の第三界面とが存在し、
前記界面における剥離強度は
第一界面>第三界面
第二界面>第三界面
であるキャリア付き極薄銅箔。 - 前記キャリア付き極薄銅箔において、
前記剥離層は剥離性を保持する金属Aと、極薄銅箔のめっきを容易にする金属Bからなり、
キャリア箔と極薄銅箔とを剥離した際の極薄銅箔側の剥離表面における金属Aの元素比xと金属Bの元素比yとが
10≦{y/(x+y)}×100≦80(%)
の比率であることを特徴とする、請求項1に記載のキャリア付き極薄銅箔。 - 前記キャリア付き極薄銅箔において、
前記キャリア箔と極薄銅箔とを剥離した際のキャリア箔側および極薄銅箔側の剥離表面に残留した剥離層の厚さを、それぞれd1およびd2とすると、
0.5≦d1/d2≦12
であることを特徴とする請求項1に記載のキャリア付き極薄銅箔。 - 前記第三界面が、第一剥離層の表面に酸化処理を施した酸化物層である請求項1に記載のキャリア付き極薄銅箔。
- 前記剥離層を構成する金属AはMo,Ta,V,Mn,W,Crの群から選択された少なくとも1つの金属であり、金属BはFe,Co,Niの群から選択された少なくとも1つの金属である請求項1~4のいずれかに記載のキャリア付き極薄銅箔。
- 前記剥離層の金属付着量の合計が、0.05mg/dm2~50mg/dm2である請求項1~4のいずれかに記載のキャリア付き極薄銅箔。
- 300℃の加熱処理後におけるキャリア箔と極薄銅箔との剥離強度が、0.005~0.1kN/mの範囲内である請求項1~4のいずれかに記載のキャリア付き極薄銅箔。
- 前記キャリア箔と剥離層及び/又は剥離層と極薄銅箔との間に拡散防止層が設けられている請求項1~4のいずれかに記載のキャリア付き極薄銅箔。
- 前記拡散防止層がFe、Ni、Co、Crまたはこれらの元素を含む合金で形成されている請求項8に記載のキャリア付き極薄銅箔。
- 前記キャリア箔がCu、またはCu合金である請求項1~9のいずれかに記載のキャリア付き極薄銅箔。
- 請求項1~10のいずれかに記載のキャリア付き極薄銅箔を樹脂基材に積層してなる銅張積層板。
- 請求項1~10のいずれかに記載のキャリア付き極薄銅箔を樹脂基材に積層してなる銅プリント配線基板。
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| KR1020117007807A KR101281146B1 (ko) | 2008-09-05 | 2009-09-04 | 캐리어 부착 극박 동박, 및 동장 적층판 또는 프린트 배선 기판 |
| US13/062,335 US8674229B2 (en) | 2008-09-05 | 2009-09-04 | Ultra-thin copper foil with carrier and copper-clad laminate board or printed circuit board substrate |
| CN2009801446360A CN102203326A (zh) | 2008-09-05 | 2009-09-04 | 带有载体的极薄铜箔以及贴铜层压板或印刷线路基板 |
| JP2010527833A JP5959149B2 (ja) | 2008-09-05 | 2009-09-04 | キャリア付き極薄銅箔、並びに銅貼積層板またはプリント配線基板 |
| EP20090811577 EP2336395A1 (en) | 2008-09-05 | 2009-09-04 | Ultrathin copper foil with carrier, and copper laminated board or printed wiring board |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2009/065511 Ceased WO2010027052A1 (ja) | 2008-09-05 | 2009-09-04 | キャリア付き極薄銅箔、並びに銅貼積層板またはプリント配線基板 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8674229B2 (ja) |
| EP (1) | EP2336395A1 (ja) |
| JP (1) | JP5959149B2 (ja) |
| KR (1) | KR101281146B1 (ja) |
| CN (1) | CN102203326A (ja) |
| TW (1) | TWI513388B (ja) |
| WO (1) | WO2010027052A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103392028B (zh) * | 2011-08-31 | 2016-01-06 | Jx日矿日石金属株式会社 | 附载体铜箔 |
| CN103392028A (zh) * | 2011-08-31 | 2013-11-13 | Jx日矿日石金属株式会社 | 附载体铜箔 |
| KR101780130B1 (ko) | 2012-08-08 | 2017-09-19 | 제이엑스금속주식회사 | 캐리어 부착 동박 |
| WO2014132947A1 (ja) * | 2013-02-26 | 2014-09-04 | 古河電気工業株式会社 | キャリア付き極薄銅箔、銅張積層板並びにコアレス基板 |
| JPWO2014132947A1 (ja) * | 2013-02-26 | 2017-02-02 | 古河電気工業株式会社 | キャリア付き極薄銅箔、銅張積層板並びにコアレス基板 |
| JP2014195036A (ja) * | 2013-02-28 | 2014-10-09 | Jx Nippon Mining & Metals Corp | キャリア付銅箔、キャリア付銅箔の製造方法、プリント配線板、プリント回路板、銅張積層板、及びプリント配線板の製造方法 |
| JP2015010274A (ja) * | 2013-07-02 | 2015-01-19 | Jx日鉱日石金属株式会社 | キャリア付銅箔、その製造方法、プリント配線板、プリント回路板、銅張積層板及びプリント配線板の製造方法 |
| JP2015010275A (ja) * | 2013-07-02 | 2015-01-19 | Jx日鉱日石金属株式会社 | キャリア付銅箔、その製造方法、プリント配線板、プリント回路板、銅張積層板及びプリント配線板の製造方法 |
| JP2015010273A (ja) * | 2013-07-02 | 2015-01-19 | Jx日鉱日石金属株式会社 | キャリア付銅箔、その製造方法、プリント配線板、プリント回路板、銅張積層板及びプリント配線板の製造方法 |
| JP2015042765A (ja) * | 2013-07-23 | 2015-03-05 | Jx日鉱日石金属株式会社 | 表面処理銅箔、キャリア付銅箔、基材、プリント配線板、プリント回路板、銅張積層板及びプリント配線板の製造方法 |
| JP2015047795A (ja) * | 2013-09-02 | 2015-03-16 | Jx日鉱日石金属株式会社 | キャリア付銅箔、プリント配線板、プリント回路板、銅張積層板、及びプリント配線板の製造方法 |
| JP2018053327A (ja) * | 2016-09-29 | 2018-04-05 | Jx金属株式会社 | キャリア付金属箔、積層体、積層体の製造方法、プリント配線板の製造方法及び電子機器の製造方法 |
| JP2018087369A (ja) * | 2016-11-30 | 2018-06-07 | 福田金属箔粉工業株式会社 | 複合金属箔及び該複合金属箔を用いた銅張積層板並びに該銅張積層板の製造方法 |
| JP2017106118A (ja) * | 2017-01-05 | 2017-06-15 | Jx金属株式会社 | キャリア付銅箔、キャリア付銅箔の製造方法、プリント回路板の製造方法、銅張積層板の製造方法、及び、プリント配線板の製造方法 |
| JP2020150244A (ja) * | 2019-03-11 | 2020-09-17 | ザ グッドシステム コーポレーション | 放熱板材 |
| JP2020150254A (ja) * | 2019-03-11 | 2020-09-17 | ザ グッドシステム コーポレーション | 放熱板材 |
| JP2025015606A (ja) * | 2019-08-26 | 2025-01-30 | 東洋鋼鈑株式会社 | キャリア層付き金属積層基材及びその製造方法、金属積層基材及びその製造方法、並びにプリント配線板 |
| JP7799793B2 (ja) | 2019-08-26 | 2026-01-15 | 東洋鋼鈑株式会社 | キャリア層付き金属積層基材及びその製造方法、金属積層基材及びその製造方法、並びにプリント配線板 |
| JP2025048697A (ja) * | 2023-09-20 | 2025-04-03 | 南亞塑膠工業股▲分▼有限公司 | 剥離キャリア構造及び銅箔複合構造 |
| US12492482B2 (en) | 2023-09-20 | 2025-12-09 | Nan Ya Plastics Corporation | Release carrier structure and copper foil composite structure |
| JP2025076229A (ja) * | 2023-11-01 | 2025-05-15 | 南亞塑膠工業股▲分▼有限公司 | キャリア付き極薄銅箔及びその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201021647A (en) | 2010-06-01 |
| JPWO2010027052A1 (ja) | 2012-02-02 |
| US20110209903A1 (en) | 2011-09-01 |
| TWI513388B (zh) | 2015-12-11 |
| US8674229B2 (en) | 2014-03-18 |
| KR20110049920A (ko) | 2011-05-12 |
| CN102203326A (zh) | 2011-09-28 |
| JP5959149B2 (ja) | 2016-08-02 |
| KR101281146B1 (ko) | 2013-07-02 |
| EP2336395A1 (en) | 2011-06-22 |
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