WO2013077108A1 - シールドフィルム、シールドプリント配線板、及び、シールドフィルムの製造方法 - Google Patents
シールドフィルム、シールドプリント配線板、及び、シールドフィルムの製造方法 Download PDFInfo
- Publication number
- WO2013077108A1 WO2013077108A1 PCT/JP2012/076473 JP2012076473W WO2013077108A1 WO 2013077108 A1 WO2013077108 A1 WO 2013077108A1 JP 2012076473 W JP2012076473 W JP 2012076473W WO 2013077108 A1 WO2013077108 A1 WO 2013077108A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shield film
- shield
- metal layer
- film
- wiring board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0084—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a single continuous metallic layer on an electrically insulating supporting structure, e.g. metal foil, film, plating coating, electro-deposition, vapour-deposition
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/07—Electric details
- H05K2201/0707—Shielding
- H05K2201/0715—Shielding provided by an outer layer of PCB
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49226—Electret making
Definitions
- the present invention relates to a shield film used in a device such as a portable device, a shield printed wiring board using the shield film, and a method for manufacturing the shield film.
- Patent Documents 1 and 2 disclose a printed wiring board shield film in which a metal layer and an adhesive layer are sequentially laminated.
- the present invention has been made in view of the above problems, and shields electric field waves, magnetic field waves, and electromagnetic waves traveling from one side of the shield film to the other side, and has good transmission characteristics. It aims at providing the manufacturing method of a shield printed wiring board and a shield film.
- the present inventor has achieved favorable shielding characteristics and transmission characteristics by using an anisotropic conductive adhesive for the adhesive layer and a metal layer of 0.5 ⁇ m to 12 ⁇ m. It was found that it can be obtained.
- the present invention is characterized in that a metal layer having a layer thickness of 0.5 ⁇ m to 12 ⁇ m and an anisotropic conductive adhesive layer are provided in a laminated state.
- the metal layer having a layer thickness of 0.5 ⁇ m to 12 ⁇ m, it is possible to satisfactorily shield the electric field wave, magnetic field wave and electromagnetic wave traveling from the one surface side to the other surface side of the shield film. it can.
- the conductive adhesive layer is an anisotropic conductive adhesive layer, it has better transmission characteristics than when it is an isotropic conductive adhesive layer.
- the metal layer is a metal foil. According to said structure, while being able to obtain the metal layer of desired layer thickness easily, a shield characteristic better than the metal layer of the thin film formed by the vapor deposition method can be obtained.
- the metal foil is formed by rolling. According to said structure, workability
- the metal foil has a layer thickness adjusted by etching. According to the above configuration, after forming a metal foil having a layer thickness of the first dimension by rolling, the metal foil is thinned to the second dimension by etching, so that it cannot be obtained with high precision by rolling. A metal layer having a layer thickness can be obtained.
- the metal foil is mainly composed of copper. According to said structure, while being able to obtain the favorable workability and electroconductivity by having excellent shape maintenance, an inexpensive shield film can be obtained.
- a protective metal layer may be provided between a metal layer formed of a metal foil containing copper as a main component and an anisotropic conductive adhesive layer. According to the said structure, the oxidation of a metal layer can be suppressed, the raise of the surface resistance of a metal layer can be suppressed, and the stable shield effect can be hold
- the metal layer may be formed by an additive method. According to the said structure, when forming a metal layer, the thickness of a metal layer can be adjusted finely.
- the metal layer may be formed using at least one of an electrolytic plating method and an electroless plating method as the additive method. According to the said structure, when forming a metal layer, while being able to adjust the thickness of a metal layer finely, productivity can be raised.
- the shield film of the present invention is applied as a shield film for a signal transmission system for transmitting a signal having a frequency of 10 MHz to 10 GHz. According to said structure, while being able to respond to high-speed transmission, an inexpensive shield film can be obtained.
- the shield printed wiring board of the present invention includes a printed wiring board having a base member on which a printed circuit is formed, and an insulating film provided on the base member so as to cover the printed circuit, and the printed wiring. It has said shield film provided on the board.
- the printed circuit of the shield printed wiring board of the present invention includes a ground wiring pattern.
- the method for producing a shield film of the present invention comprises a step of forming a metal foil having a layer thickness of a predetermined dimension by rolling, and then etching the metal foil to a predetermined layer thickness of 0.5 ⁇ m to 12 ⁇ m; Forming an anisotropic conductive adhesive layer on one surface of the metal layer.
- A It is sectional drawing of the shield printed wiring board which contains a signal circuit and a ground circuit in a wiring pattern.
- B It is sectional drawing of the shield printed wiring board whose wiring pattern is only a signal circuit. It is a figure which shows the structure of the system used by KEC method.
- A is a figure which shows an electric field wave shield effect evaluation apparatus.
- B is a figure which shows a magnetic field wave shield effect evaluation apparatus.
- A It is a figure which shows the measurement result of the electric field wave shield performance by KEC method.
- B It is a figure which shows the measurement result of the magnetic wave shield performance by KEC method. It is a system block diagram which measures a frequency characteristic.
- (A) It is a figure which shows the measurement result of the frequency characteristic of a single-sided shield.
- (B) It is a figure which shows the measurement result of the frequency characteristic of a double-sided shield. It is a system block diagram which measures an output waveform characteristic.
- (A) It is a figure which shows the measurement result of the output waveform characteristic in case a bit rate is 1.0 Gbps.
- (B) It is a figure which shows the measurement result of the output waveform characteristic in case a bit rate is 3.0 Gbps.
- a shield film 1 shown in FIG. 1 is obtained by sequentially providing a metal layer 3 having a thickness of 0.5 ⁇ m to 12 ⁇ m and an anisotropic conductive adhesive layer 4 on one surface of an insulating layer 2. That is, the shield film 1 includes a metal layer 3 and an anisotropic conductive adhesive layer 4 in a laminated state.
- the insulating layer 2 is made of a cover film or an insulating resin coating layer.
- the cover film is made of engineering plastic. Examples include polypropylene, crosslinked polyethylene, polyester, polybenzimidazole, aramid, polyimide, polyimideamide, polyetherimide, polyphenylene sulfide (PPS), polyethylene naphthalate (PEN), and the like.
- An inexpensive polyester film is preferable when heat resistance is not required, and a polyphenylene sulfide film is preferable when flame resistance is required, and an aramid film or a polyimide film is preferable when heat resistance is required.
- the insulating resin may be any resin having insulating properties, and examples thereof include a thermosetting resin and an ultraviolet curable resin.
- examples of the thermosetting resin include a phenol resin, an acrylic resin, an epoxy resin, a melamine resin, a silicone resin, and an acrylic modified silicone resin.
- examples of the ultraviolet curable resin include epoxy acrylate resins, polyester acrylate resins, and methacrylate-modified products thereof.
- the curing form may be any of thermosetting, ultraviolet curing, electron beam curing, etc., as long as it can be cured.
- the minimum of the thickness of the insulating layer 2 is preferably 1 ⁇ m, and more preferably 3 ⁇ m.
- the upper limit of the thickness of the insulating layer 2 is preferably 10 ⁇ m, and more preferably 7 ⁇ m.
- the metal layer 3 is formed with a thickness in the range of 0.5 ⁇ m to 12 ⁇ m. Thereby, the electric field wave, magnetic field wave, and electromagnetic wave which advance from the one surface side of the shield film to the other surface side can be well shielded, and it is also suitable when applied to a flexible printed wiring board.
- the metal layer 3 is preferably a metal foil. This makes it possible to easily obtain a metal layer having a desired layer thickness and to obtain better shielding characteristics than a thin metal layer formed by vapor deposition.
- the metal layer 3 is preferably formed by rolling. Thereby, a shield film can have favorable shape retainability. Therefore, the workability at the time of assembling the flexible substrate with the shield film bonded thereto can be improved. For example, when a flexible printed wiring board provided with a shield film is bent and assembled to a portable device or the like, the flexible printed wiring board maintains its bent state due to its good shape retention, There is no need for the operator to maintain the bent state, and the load of assembling work such as portable equipment can be reduced, and good workability can be obtained.
- the layer thickness is preferably adjusted by etching.
- the metal material forming the metal layer 3 is preferably composed mainly of copper. Thereby, since shape maintenance is excellent, while being able to obtain favorable workability and electroconductivity, a shield film can be manufactured cheaply.
- the metal layer 3 is not limited to copper as a main component, but is any one of nickel, copper, silver, tin, gold, palladium, aluminum, chromium, titanium, and zinc, or two or more of these.
- An alloy containing The metal layer 3 is not limited to a metal foil formed by rolling, but may be a metal foil by electrolysis (such as a special electrolytic copper foil) or an additive method such as vacuum deposition, sputtering, CVD, MO ( Metal organic), plating, or the like may be used.
- Plating is electrolytic plating (a method in which electricity from an external electrode or the like is used for plating through an electrolysis reaction), electroless plating (a method for plating through a chemical reaction without using electricity from an external electrode or the like)
- the metal layer 3 is more preferably 1 ⁇ m, and further preferably 2 ⁇ m.
- the upper limit of the thickness of the metal layer 3 is more preferably 6 ⁇ m, and further preferably 3 ⁇ m.
- the anisotropic conductive adhesive layer 4 is an anisotropic conductive adhesive layer having anisotropic conductivity in which an electrically conductive state is ensured only in the thickness direction.
- a flame retardant or a conductive filler is added to the adhesive to form an anisotropic conductive adhesive layer.
- the lower limit of the thickness of the anisotropic conductive adhesive layer 4 is preferably 2 ⁇ m and more preferably 3 ⁇ m. Further, the upper limit of the thickness of the anisotropic conductive adhesive layer 4 is preferably 15 ⁇ m, and more preferably 9 ⁇ m.
- the adhesive contained in the anisotropic conductive adhesive layer 4 includes, as an adhesive resin, a thermoplastic resin such as polystyrene, vinyl acetate, polyester, polyethylene, polypropylene, polyamide, rubber, and acrylic. , Phenolic, epoxy-based, urethane-based, melamine-based and alkyd-based thermosetting resins.
- the adhesive may be a single substance or a mixture of the above resins.
- the adhesive may further contain a tackifier.
- the tackifier include tackifiers such as fatty acid hydrocarbon resins, C5 / C9 mixed resins, rosin, rosin derivatives, terpene resins, aromatic hydrocarbon resins, and thermally reactive resins.
- the conductive filler added to the anisotropic conductive adhesive layer 4 is partially or entirely formed of a metal material.
- conductive fillers include copper powder, silver powder, nickel powder, silver coated copper powder (Ag coated Cu powder), gold coated copper powder, silver coated nickel powder (Ag coated Ni powder), and gold coated nickel powder.
- the metal powder can be produced by an atomizing method, a carbonyl method, or the like.
- particles obtained by coating a metal powder with a resin and particles obtained by coating a resin with a metal powder can also be used.
- one or more kinds of conductive fillers may be mixed and added to the anisotropic conductive adhesive layer 4.
- the conductive filler is preferably Ag-coated Cu powder or Ag-coated Ni powder. This is because conductive particles having stable conductivity can be obtained from an inexpensive material.
- the conductive filler is added in the range of 3 wt% to 39 wt% with respect to the total amount of the anisotropic conductive adhesive layer 4.
- the average particle size of the conductive filler is preferably in the range of 2 ⁇ m to 20 ⁇ m, but an optimal value may be selected depending on the thickness of the anisotropic conductive adhesive layer 4.
- the shape of the metal filler may be spherical, needle-like, fiber-like, flake-like, or dendritic.
- shield printed wiring board 10 (Configuration of shield printed wiring board 10)
- FPC flexible printed wiring board
- this embodiment demonstrates the case where a shield film is stuck on FPC, it is not limited to this.
- it can be used for COF (chip on flex), RF (rigid flex printed board), multilayer flexible substrate, rigid substrate and the like.
- the shield printed wiring board 10 is formed by laminating the shield film 1 and the base film (FPC) 8 described above.
- the base film 8 is formed by sequentially laminating a base film 5, a printed circuit 6, and an insulating film 7.
- the surface of the printed circuit 6 includes a signal circuit 6a and a ground circuit 6b, and is covered with an insulating film 7 except for at least a part (non-insulating portion 6c) of the ground circuit 6b.
- the insulating film 7 has the insulation removal part 7a into which a part of anisotropic conductive adhesive layer 4 of the shield film 1 flows in the inside. Thereby, the ground circuit 6b and the metal layer 3 are electrically connected.
- the signal circuit 6a and the ground circuit 6b are formed with a wiring pattern by etching the conductive material.
- the ground circuit 6b refers to a pattern that maintains the ground potential. That is, the base film 5 is formed with a ground circuit 6b which is a ground wiring pattern. As shown in FIG. 2B, the printed circuit 6 may not include the ground circuit 6b. In this case, the printed circuit 6 is covered with the insulating film 7.
- a signal having a frequency of 10 MHz to 10 GHz is transmitted to the signal circuit 6a. That is, the shield film 1 is preferably applied as a shield film for a signal transmission system in which a signal having a frequency of 10 MHz to 10 GHz is transmitted, but is not limited thereto.
- the lower limit of the frequency of the signal transmission system to which the shield film 1 is applied is preferably 10 MHz, and more preferably 100 MHz.
- the upper limit of the frequency of the signal transmission system to which the shield film 1 is applied is preferably 10 GHz, and more preferably 5 GHz.
- the base film 5 and the printed circuit 6 may be joined together by an adhesive, or may be joined in the same manner as a so-called adhesiveless copper-clad laminate that does not use an adhesive.
- the insulating film 7 may be formed by bonding a flexible insulating film using an adhesive, or by a series of techniques such as application of a photosensitive insulating resin, drying, exposure, development, and heat treatment. . When the insulating film 7 is pasted using an adhesive, the insulating removal portion 7a is also formed at the location of the ground circuit 6b of the adhesive.
- the base film 8 is a single-sided FPC having a printed circuit only on one side of the base film, a double-sided FPC having a printed circuit on both sides of the base film, and a multilayer in which a plurality of such FPCs are laminated.
- FPC Flexboard (registered trademark) with multi-layer component mounting part and cable part, flex-rigid board with rigid members constituting multi-layer part, or TAB tape for tape carrier package Can be implemented.
- the base film 5 and the insulating film 7 are both made of engineering plastic. Examples thereof include resins such as polyethylene terephthalate, polypropylene, crosslinked polyethylene, polyester, polybenzimidazole, polyimide, polyimide amide, polyether imide, and polyphenylene sulfide (PPS).
- resins such as polyethylene terephthalate, polypropylene, crosslinked polyethylene, polyester, polybenzimidazole, polyimide, polyimide amide, polyether imide, and polyphenylene sulfide (PPS).
- PPS polyphenylene sulfide
- An inexpensive polyester film is preferable when heat resistance is not required, and a polyphenylene sulfide film is preferable when flame resistance is required, and a polyimide film is preferable when heat resistance is required.
- 10 micrometers is preferable and the minimum of the thickness of the base film 5 has more preferable 20 micrometers.
- the upper limit of the thickness of the base film 5 is preferably 60 ⁇ m, and more preferably 40 ⁇ m.
- the lower limit of the thickness of the insulating film 7 is preferably 10 ⁇ m, and more preferably 20 ⁇ m.
- the upper limit of the thickness of the insulating film 7 is preferably 60 ⁇ m, and more preferably 40 ⁇ m.
- the manufacturing method of the shield film 1 of this embodiment is demonstrated. First, rolling is performed through copper between rotating rolls to reduce the thickness to the first dimension.
- the lower limit of the thickness of the first dimension is preferably 3 ⁇ m, more preferably 6 ⁇ m, and even more preferably 9 ⁇ m.
- the upper limit of the thickness of the first dimension is preferably 35 ⁇ m, more preferably 18 ⁇ m, and further preferably 12 ⁇ m.
- etching is performed on the copper foil that has been rolled to have the first dimension, and the metal layer 3 is formed by reducing the thickness to the second dimension (0.5 ⁇ m to 12 ⁇ m).
- ⁇ m of copper foil is dipped in an etching solution of sulfuric acid and hydrogen peroxide to be processed to a thickness of 2 ⁇ m.
- an anisotropic conductive adhesive layer 4 is coated on one surface of the metal layer 3.
- the insulating layer 2 which is a protective film is stuck on the other surface of the formed metal layer 3. Note that the step of forming the insulating layer can be omitted.
- the insulating film 7 of the base film 8 is perforated by laser processing or the like to form the insulating removal portion 7a.
- the shield film 1 is bonded onto the insulating film 7 of the base film 8.
- the printed wiring board 10 and the shield film 1 are pressure-bonded from above and below by a press machine while the shield film 1 is heated by a heater.
- the anisotropic conductive adhesive layer 4 of the shield film 1 is softened by the heat of the heater, and is adhered onto the insulating film 7 by pressurization of a press.
- the anisotropically conductive adhesive layer 4 that has become soft is filled in the insulation removal portion 7a. Therefore, it adheres to the anisotropic conductive adhesive layer 4 filled with a part of the ground circuit 6b exposed at the insulation removal portion 7a. As a result, the ground circuit 6 b and the metal layer 3 are electrically connected via the anisotropic conductive adhesive layer 4.
- the shield film 1 is attached to one side, but is not limited thereto.
- a shield film may be attached to both sides.
- the shield printed wiring board 10 when copper is used as the metal material for forming the metal layer 3, the surface of the metal layer 3 is oxidized due to the influence of manufacturing conditions and manufacturing processes, and the surface resistance is increased. May end up.
- the surface resistance increases in this way, the connection resistance from the anisotropic conductive adhesive layer 4 to the ground circuit 6b also increases, and as a result, the shielding effect of the shield film 1 may be reduced. Therefore, as shown in FIG. 11, a protective metal layer 3 a having a low surface resistance / contact resistance may be provided between the metal layer 3 and the anisotropic conductive adhesive layer 4. In this case, it is preferable to use silver (Ag) or gold (Au) for the protective metal layer 3a.
- the protective metal layer 3a as in the method for forming the metal layer 3, there are methods such as vacuum deposition, sputtering, CVD, MO (metal organic), plating, which are additive methods.
- vacuum deposition sputtering, CVD, MO (metal organic), plating, which are additive methods.
- MO metal organic
- the shield film (measurement sample) 101 shown in Table 1 was used.
- Table 1 shows the manufacturing method and material of the metal layer, and whether the adhesive layer is an anisotropic conductive adhesive or an isotropic conductive adhesive.
- the electromagnetic wave shielding effect measuring device 11 (electric field wave shielding effect evaluation device 11a, magnetic field wave shielding effect evaluation device 11b) developed at the KEC Kansai Electronics Industry Promotion Center with respect to the electric field wave and magnetic field shielding properties of the shield film. It was evaluated by the KEC method using FIG. 3 is a diagram showing the configuration of a system used in the KEC method.
- the system used in the KEC method includes an electromagnetic wave shielding effect measuring device 11, a spectrum analyzer 21, an attenuator 22 that attenuates 10 dB, an attenuator 23 that attenuates 3 dB, and a preamplifier 24.
- HP 8447F manufactured by Agilent Technologies was used.
- FIG. 3A shows the electric field wave shield effect evaluation apparatus 11a
- FIG. 3B shows the magnetic field wave shield effect evaluation apparatus 11b.
- the electric field wave shield effect evaluation device 11a is provided with two measuring jigs 13 facing each other.
- the measurement target shield film (measurement sample) 101 shown in Table 1 is installed between the measurement jigs 13 and 13 so as to be sandwiched therebetween.
- the measurement jig 13 adopts a TEM cell (Transverse ElectroMagnetic Cell) size distribution and has a structure in which the measurement jig 13 is symmetrically divided in a plane perpendicular to the transmission axis direction. However, in order to prevent a short circuit from being formed due to the insertion of the measurement sample 101, the flat central conductor 14 is arranged with a gap between each measurement jig 13.
- the electric field wave shield effect evaluation apparatus 11a is provided with two measuring jigs 15 facing each other. The shield film 101 to be measured is installed so as to be sandwiched between the measurement jigs 15 and 15.
- the magnetic field shield effect evaluation apparatus 11b uses a shielded circular loop antenna 16 as a measurement jig 15, and combines it with a 90 ° square metal plate.
- the structure is such that a quarter of the antenna is exposed to the outside.
- Example 3 Example 5 shown in Table 1, and the shielding film 101 of the comparative example 1, it measured using what was cut
- measurement was performed in a frequency range of 1 MHz to 1 GHz. The measurement was performed in an atmosphere at a temperature of 25 ° C. and a relative humidity of 30 to 50%.
- a signal output from the spectrum analyzer 21 is input to the measurement jig 13 or the measurement jig 15 on the transmission side via the attenuator 22. Then, the signal is received by the measuring jig 13 or the measuring jig 15 on the receiving side and the signal via the attenuator 23 is amplified by the preamplifier 24, and then the signal level is measured by the spectrum analyzer 21.
- the spectrum analyzer 21 outputs the attenuation when the shield film is installed in the electromagnetic wave shielding effect measuring device 11 with reference to the state where the shield film is not installed in the electromagnetic wave shielding effect measuring device 11.
- the measurement result of the electric field wave shielding performance by the KEC method is shown in FIG. 4A, and the measurement result of the magnetic field wave shielding performance is shown in FIG. 4B.
- the attenuation of Examples 3 and 5 is larger than that of Comparative Example 1 and is effective as a shield characteristic.
- the frequency characteristics of the shield film were evaluated using a network analyzer 31 as shown in FIG.
- the network analyzer 31 ZVL6 manufactured by Rohde & Schwarz was used.
- the network analyzer 31 has an input terminal and an output terminal, and a connection board 32 is connected to each of them.
- the measurement is performed by connecting the shield flexible printed wiring board 110 to be measured so as to be supported in a straight state floating in the air between the pair of connection boards 32.
- 110 was fabricated (hereinafter referred to as a single-sided shield) as a measurement target (shielded flexible printed wiring board 110a).
- the object to be measured hereinafter referred to as a double-sided shield manufactured by attaching the shield film 101 to the base film side of the shield flexible printed wiring board 110a was also set as a measurement target (shield flexible printed wiring board 110b).
- shield flexible printed wiring boards 110 a 37.5 ⁇ m insulating film in which a 12.5 ⁇ m thick polyimide film and a 25 ⁇ m thick adhesive layer were combined was used.
- the circuit pattern used was a 12 ⁇ m copper foil plated with 6 ⁇ m copper. As described above, the circuit pattern does not include a ground circuit. Further, a 25 ⁇ m polyimide film was used as the base film. Further, the shield flexible printed wiring board 110 having a length of 200 mm was used. Further, the measurement was performed in the frequency range of 100 kHz to 6 GHz. The measurement was performed in an atmosphere at a temperature of 25 ° C. and a relative humidity of 30 to 50%.
- the network analyzer 31 measures for each frequency how much the input signal is attenuated with respect to the output signal.
- the measurement result of the single-sided shield by the network analyzer 31 is shown in FIG. 6A, and the measurement result of the double-sided shield is shown in FIG. 6B. From this, it was found that in both the single-sided shield and the double-sided shield, the attenuation amount of Example 5 was lower than that of Comparative Examples 1 and 2 and had good transmission characteristics.
- Table 2 shows attenuation amounts at typical frequencies in Comparative Examples 1 and 2 and Example 5.
- the shield film of the present invention is applied as a shield film for a signal transmission system that transmits a signal having a frequency of 10 MHz to 10 GHz, so that an electric field wave and a magnetic field wave traveling from one surface side to the other surface side of the shield film.
- electromagnetic waves can be well shielded.
- FIG. 1 This system includes a data generator 41, an oscilloscope 42, a sampling module 43 attached to the oscilloscope 42, and a pair of connection boards 32.
- the data generator 41 81133A manufactured by Agilent Technologies was used.
- the oscilloscope 42 DSC8200 manufactured by Tektronix was used.
- the sampling module 43 80E03 manufactured by Tektronix was used.
- connection board 32 has an input terminal and an output terminal, and the shielded flexible printed wiring board 110 to be measured is floated in the air between the pair of connection boards 32.
- the eye pattern is observed by connecting to the data generator 41 and the sampling module 43.
- the input amplitude was 150 mV / side (300 mVdiff).
- the data pattern was PRBS23. The measurement was performed in an atmosphere at a temperature of 25 ° C. and a relative humidity of 30 to 50%.
- FIG. 8A shows the measurement results observed with the oscilloscope 42 when the bit rate is 1.0 Gbps
- FIG. 8B shows the measurement results when the bit rate is 3.0 Gbps.
- the eye pattern of Comparative Examples 1 and 2 has more jitter than Example 5 regardless of single-sided shield or double-sided shield, and Example 5 is faster. It was found to be suitable for.
- the shape retention of the shield film was evaluated.
- the test body 51 was obtained by bonding the shield film 101 shown in Table 1 on both sides of a 50 ⁇ m polyimide film.
- the test body 51 was cut into a shape of 10 mm ⁇ 100 mm. As shown in FIG. 9, such a test body 51 is bent so as to be slightly creased at a bent portion 51a near the center in the longitudinal direction (around 50 mm), and an upper portion 51b and a lower portion 51c divided by the bent portion 51a. Are in such a manner that they face each other.
- the entire test body 51 is placed on a PP (polypropylene) substrate 54 and 0.3 mm thick as spacers on both sides of the test body 51 so as to be parallel to the longitudinal direction of the test body 51.
- a SUS plate (not shown) was arranged. Then, the silicon rubber 53 was lowered from above, and the entire test body 51 was pressed together with the SUS plate. That is, since there is a 0.3 mm SUS plate, the bending radius at the bent portion 51 a of the test body 51 is 0.15 mm.
- the pressurizing time is set to 1 second, 3 seconds, and 5 seconds in both cases where the pressure applied by the press is 0.1 MPa and 0.3 MPa, and the upper part 51b and the lower part 51c form the test body 51 after pressing.
- the angle (return angle) was measured.
- Table 3 to be described later shows the results of measuring the return angle for Examples 1 to 5 and Comparative Examples 1 and 2. Evaluation was made with double-sided sticking, with an angle of 90 degrees or less marked with ⁇ , and with more than 120 degrees marked with x. According to Table 3, it can be seen that the rolled copper foil has better shape retention. That is, it can be seen that the rolled copper foil is effective for shape retention.
- a shielded flexible printed wiring board 111 (any one of the samples of Examples 1 to 5 and Comparative Examples 1 and 2 described above) is used between the fixed plate 121 and the sliding plate 122. Is bent in a U shape with a curvature of 0.65 mm and a gap between the fixed plate 121 and the sliding plate 122 of 1.30 mm. Resistance of the metal layer of the shield film in the shield flexible printed wiring board when the sliding plate 122 is slid up and down at a stroke of 50 mm (sliding area 25 mm) and a sliding speed of 60 cpm at a humidity of 30 to 50% (what It can be verified whether it can withstand a single slide. Each shield film had a length of 140 mm. The verification results of Examples 1 to 5 and Comparative Examples 1 and 2 are shown in Table 3 below together with shape retention.
- Table 3 also shows the verification results of Examples 1 to 5 and Comparative Examples 1 and 2 regarding the above-described frequency characteristics and shield characteristics.
- the frequency characteristics are shown for the frequency when the attenuation is ⁇ 3 dB and ⁇ 10 dB.
- the shield characteristic the attenuation amount with respect to the electric field wave at 1 GHz is shown.
- the slidability is extremely lowered when the metal layer exceeds 5 ⁇ m. Therefore, when the slidability is required, it is clear that the metal layer is preferably 5 ⁇ m or less.
- shape retention it can be seen that good shape retention is obtained when the metal layer is made of copper foil and formed by rolling. Therefore, it is clear that it is preferable to use a rolled copper foil when shape retention is required.
- connection resistance ⁇ Connection resistance> Next, it measured about the connection resistance of the shield film and shield printed wiring board which passed through the manufacturing process which manufactures the shield printed wiring board 10 (measurement of the connection resistance after reflow). Specifically, as shown in Table 4, in Example 6, the copper foil was not subjected to rust prevention treatment, and the silver film between the metal layer 3 of the shield film 1 and the anisotropic conductive adhesive layer 4 was silver-coated. Was used to measure the connection resistance value ( ⁇ ) between the shield film 1 and the ground circuit 6b using the shield printed wiring board 10 provided with the protective metal layer 3a having a thickness of 0.05 ⁇ m.
- Example 7 the copper foil was not subjected to rust prevention treatment, and silver was vacuum-deposited between the metal layer 3 and the anisotropic conductive adhesive layer 4 of the shield film 1 to a thickness of 0.1 ⁇ m.
- the connection resistance value ( ⁇ ) between the shield film 1 and the ground circuit 6b was measured.
- the copper foil was not subjected to rust prevention treatment, and silver was plated between the metal layer 3 and the anisotropic conductive adhesive layer 4 of the shield film 1 to a thickness of 0.05 ⁇ m.
- the shield printed wiring board 10 provided with the protective metal layer 3a the connection resistance value ( ⁇ ) between the shield film 1 and the ground circuit 6b was measured.
- Example 9 the copper foil was not subjected to rust prevention treatment, and silver was plated between the metal layer 3 and the anisotropic conductive adhesive layer 4 of the shield film 1 to a thickness of 0.1 ⁇ m.
- the connection resistance value ( ⁇ ) between the shield film 1 and the ground circuit 6b was measured.
- the connection resistance value ((ohm)) between the shield film 1 and the ground circuit 6b in the shield printed wiring board which performed a rust prevention process as a process of copper foil, and does not provide the protective metal layer 3a was measured. .
- the insulating layer 2 has a thickness of 5 ⁇ m
- the metal layer 3 (rolled copper foil) has a thickness of 6 ⁇ m
- the anisotropic conductive adhesive layer 4 has a thickness of 9 ⁇ m.
- the shield films 1 of Examples 6 to 9 have a configuration in which a protective metal layer 3a is further provided between the metal layer 3 and the anisotropic conductive adhesive layer 4.
- connection resistance of Example 5 is 2 ⁇ or less, it is a level that can withstand practical use.
- Example 6 and Example 8 and Example 7 and Example 9 are compared, as a formation method of the protective metal layer 3a, the connection resistance is smaller when formed by plating than by vacuum deposition. I understand.
- Example 6 and Example 7 and Example 8 and Example 9 are compared, it turns out that the one where the protective metal layer 3a is thick has a small connection resistance.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
- Structure Of Printed Boards (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Non-Insulated Conductors (AREA)
- Manufacturing Of Electric Cables (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Description
上記の構成によれば、所望の層厚の金属層を容易に得ることができると共に、蒸着法で形成された薄膜の金属層よりも良好なシールド特性を得ることができる。
上記の構成によれば、良好な形状保持性によりシールドフィルムを貼り合わせたフレキシブル基板等の基体フィルムを組み付ける際の作業性を良好にすることができる。
上記の構成によれば、圧延加工により第1寸法の層厚の金属箔とした後に、その金属箔をエッチングにより第2寸法にまで薄くすることによって、圧延加工では高精度に得ることのできない薄い層厚の金属層を得ることができる。
上記の構成によれば、形状保持が優れていることによる良好な加工性及び導電性を得ることができると共に、安価なシールドフィルムを得ることができる。
上記構成によれば、金属層の酸化を抑制して、金属層の表面抵抗の上昇を抑制することができ、安定したシールド効果を保持することができる。
上記構成によれば、金属層を形成する際に、金属層の厚みをきめ細やかに調整することができる。
上記構成によれば、金属層を形成する際に、金属層の厚みをきめ細やかに調整することができるとともに、生産効率を上げることができる。
上記の構成によれば、高速伝送に対応できると共に、安価なシールドフィルムを得ることができる。
図1に示すシールドフィルム1は、絶縁層2の片面に、層厚が0.5μm~12μmの金属層3と、異方導電性接着剤層4とを順次設けてなるものである。即ち、シールドフィルム1は、金属層3と、異方導電性接着剤層4とを積層状態で備えている。
絶縁層2は、カバーフィルムや絶縁樹脂のコーティング層からなる。
カバーフィルムは、エンジニアリングプラスチックからなる。例えば、ポリプロピレン、架橋ポリエチレン、ポリエステル、ポリベンツイミダゾール、アラミド、ポリイミド、ポリイミドアミド、ポリエーテルイミド、ポリフェニレンサルファイド(PPS)、ポリエチレンナフタレート(PEN)などが挙げられる。
あまり耐熱性を要求されない場合は、安価なポリエステルフィルムが好ましく、難燃性が要求される場合においては、ポリフェニレンサルファイドフィルム、さらに耐熱性が要求される場合にはアラミドフィルムやポリイミドフィルムが好ましい。
絶縁樹脂は、絶縁性を有する樹脂であればよく、例えば、熱硬化性樹脂又は紫外線硬化性樹脂などが挙げられる。熱硬化性樹脂としては、例えば、フェノール樹脂、アクリル樹脂、エポキシ樹脂、メラミン樹脂、シリコン樹脂、アクリル変性シリコン樹脂などが挙げられる。紫外線硬化性樹脂としては、例えば、エポキシアクリレート樹脂、ポリエステルアクリレート樹脂、及びそれらのメタクリレート変性品などが挙げられる。尚、硬化形態としては、熱硬化、紫外線硬化、電子線硬化などどれでもよく、硬化するものであればよい。
尚、シールドフィルム1をフレキシブルプリント配線板に適用する場合、絶縁層2の厚みの下限は、1μmが好ましく、3μmがより好ましい。また、絶縁層2の厚みの上限は、10μmが好ましく、7μmがより好ましい。
また、金属層3を形成する金属材料としては、銅を主成分としていることが好ましい。これにより、形状保持が優れているため良好な加工性及び導電性を得ることができると共に、安価にシールドフィルムを製造することができる。尚、金属層3は、銅を主成分とすることに限定されず、ニッケル、銅、銀、錫、金、パラジウム、アルミニウム、クロム、チタン、及び、亜鉛の何れか、またはこれらの2つ以上を含む合金等であってもよい。
尚、金属層3は、圧延加工により形成された金属箔であることに限定されず、電解による金属箔(特殊電解銅箔など)、またはアディティブ法である真空蒸着、スパッタリング、CVD法、MO(メタルオーガニック)、メッキなどにより形成されるものであってもよい。
メッキは、電解メッキ(外部電極等からの電気を使用して、電気分解反応を通じてメッキする方法である)、無電解メッキ(外部電極等からの電気を使用せず、化学的反応を通じてメッキする方法であり、置換メッキや化学メッキなどがある)いずれでもよいが、生産効率の観点から下地として無電解メッキを行った後、電解メッキを行うことが好ましい。これまでの無電解メッキは前処理としてメッキ面のエッチング、触媒反応等が煩雑であったが、その前処理を簡略化する方法として導電性ポリマーをコーティングする方法を用いることができる。導電体ポリマーの導電種としては特に限定されないが、パラジウム等の触媒種を使用することが好ましい。
また、金属層3の厚みの下限は、1μmがより好ましく、2μmがさらに好ましい。また、摺動特性を向上すべく、金属層3の厚みの上限は、6μmがより好ましく、3μmがさらに好ましい。
シールドフィルム1をFPC(フレキシブルプリント配線板)に適用する場合、異方導電性接着剤層4の厚みの下限は、2μmが好ましく、3μmがより好ましい。また、異方導電性接着剤層4の厚みの上限は、15μmが好ましく、9μmがより好ましい。
異方導電性接着剤層4に含まれる接着剤は、接着性樹脂として、ポリスチレン系、酢酸ビニル系、ポリエステル系、ポリエチレン系、ポリプロピレン系、ポリアミド系、ゴム系、アクリル系などの熱可塑性樹脂や、フェノール系、エポキシ系、ウレタン系、メラミン系、アルキッド系などの熱硬化性樹脂で構成されている。尚、接着剤は、上記樹脂の単体でも混合体でもよい。また、接着剤は、粘着性付与剤をさらに含んでいてもよい。粘着性付与剤としては、脂肪酸炭化水素樹脂、C5/C9混合樹脂、ロジン、ロジン誘導体、テルペン樹脂、芳香族系炭化水素樹脂、熱反応性樹脂などのタッキファイヤーが挙げられる。
次に、図2を用いて、上記のシールドフィルム1をFPC(フレキシブルプリント配線板)に貼付したシールドプリント配線板10について説明する。尚、本実施形態では、シールドフィルムをFPCに貼付した場合について説明するがこれに限定されない。例えば、COF(チップオンフレックス)、RF(リジットフレックスプリント板)、多層フレキシブル基板、リジット基板などに利用できる。
図2(a)に示すように、プリント回路6の表面は、信号回路6aとグランド回路6bとからなり、グランド回路6bの少なくとも一部(非絶縁部6c)を除いて、絶縁フィルム7によって被覆されている。また、絶縁フィルム7は、内部にシールドフィルム1の異方導電性接着剤層4の一部が流れ込んでいる絶縁除去部7aを有している。これにより、グランド回路6bと金属層3とが電気的に接続される。
そして、信号回路6a及びグランド回路6bは、導電性材料をエッチング処理することにより配線パターンが形成される。また、グランド回路6bは、グランド電位を保つパターンのことを指す。即ち、ベースフィルム5には、グランド用配線パターンであるグランド回路6bが形成されている。
尚、図2(b)に示すように、プリント回路6は、グランド回路6bを含まないものであってもよい。この場合、プリント回路6は絶縁フィルム7によって被覆される。
シールドフィルム1が適用される信号伝送系の周波数の下限は、10MHzが好ましく、100MHzがより好ましい。また、シールドフィルム1が適用される信号伝送系の周波数の上限は、10GHzが好ましく、5GHzがより好ましい。
尚、ベースフィルム5の厚みの下限は、10μmが好ましく、20μmがより好ましい。また、ベースフィルム5の厚みの上限は、60μmが好ましく、40μmがより好ましい。
また、絶縁フィルム7の厚みの下限は、10μmが好ましく、20μmがより好ましい。また、絶縁フィルム7の厚みの上限は、60μmが好ましく、40μmがより好ましい。
本実施形態のシールドフィルム1の製造方法について説明する。
先ず、回転するロールの間に銅を通して圧延加工を行い、厚みを第1寸法まで薄くする。この第1寸法の厚みの下限は、3μmが好ましく、6μmがより好ましく、9μmがさらに好ましい。また、この第1寸法の厚みの上限は35μmが好ましく、18μmがより好ましく、12μmがさらに好ましい。
そして、圧延加工されて厚みが第1寸法になった銅箔に対して、エッチングを行なって、厚みを第2寸法(0.5μm~12μm)まで薄くして金属層3を形成する。具体的には、銅箔6μmを硫酸、過酸化水素水のエッチング液に浸して厚み2μmに加工する。尚、エッチングされた銅箔面に対し、プラズマ処理を行なって接着性を改質することが好ましい。
さらに、金属層3の一方面については、異方導電性接着剤層4をコーティングする。また、形成した金属層3の他方面については、保護フィルムである絶縁層2を貼付する。尚、絶縁層を形成する工程を省くこともできる。
先ず、基体フィルム8の絶縁フィルム7に対して、レーザー加工などによって穴を開けて絶縁除去部7aを形成する。これにより、グランド回路6bの一部の領域が絶縁除去部7aにおいて外部に露出される。
次に、基体フィルム8の絶縁フィルム7上に、シールドフィルム1が接着される。この接着時においては、ヒーターによってシールドフィルム1を加熱しながら、プレス機によって上下方向からプリント配線板10とシールドフィルム1とを圧着する。これにより、シールドフィルム1の異方導電性接着剤層4がヒーターの熱によって軟らかくなり、プレス機の加圧によって絶縁フィルム7上に接着される。この際、柔らかくなった異方導電性接着剤層4の一部が絶縁除去部7aに充填される。従って、絶縁除去部7aで露出していたグランド回路6bの一部が充填された異方導電性接着剤層4に接着する。これにより、グランド回路6bと金属層3とが異方導電性接着剤層4を介して電気的に接続されることになる。
そこで、図11に示すように、金属層3と異方導電性接着剤層4との間に、表面抵抗・接触抵抗の低い保護金属層3aを設ける構成にしてもよい。この場合の保護金属層3aには、銀(Ag)や金(Au)を使用するのが好ましい。また、保護金属層3aの形成方法としては、上記金属層3の形成方法同様に、アディティブ法である真空蒸着、スパッタリング、CVD法、MO(メタルオーガニック)、メッキなどの手法が挙げられる。
このように、金属層3と異方導電性接着剤層4との間に保護金属層3aを設けることにより、金属層3の酸化を抑制して、金属層3の表面抵抗の上昇を抑制することができ、安定したシールド効果を保持することができる。
尚、実施例1~5と比較例1・2について、表1に示すシールドフィルム(測定試料)101を用いた。尚、表1には、金属層の製造方法及び材料、並びに、接着剤層が異方導電性接着剤であるか等方導電性接着剤であるかを示している。
先ず、シールドフィルムの電界波及び磁界波シールド特性について、一般社団法人KEC関西電子工業振興センターで開発された電磁波シールド効果測定装置11(電界波シールド効果評価装置11a、磁界波シールド効果評価装置11b)を用いたKEC法により評価した。図3は、KEC法で用いられるシステムの構成を示す図である。KEC法で用いられるシステムは、電磁波シールド効果測定装置11と、スペクトラム・アナライザ21と、10dBの減衰を行うアッテネータ22と、3dBの減衰を行うアッテネータ23と、プリアンプ24とで構成される。
尚、スペクトラム・アナライザ21には、株式会社アドバンテスト社製のU3741を用いた。また、アジレントテクノロジーズ社製のHP8447Fを用いた。
電界波シールド効果評価装置11aには、2つの測定治具13が対向して設けられている。この測定治具13・13間に、表1に示される測定対象のシールドフィルム(測定試料)101が挟持されるように設置する。測定治具13には、TEMセル(Transverse ElectroMagnetic Cell)の寸法配分が取り入れられ、その伝送軸方向に垂直な面内で左右対称に分割した構造になっている。但し、測定試料101の挿入によって短絡回路が形成されることを防止するために、平板状の中心導体14は各測定治具13との間に隙間を設けて配置されている。
また、電界波シールド効果評価装置11aには、2つの測定治具15が対向して設けられている。この測定治具15・15間に、測定対象のシールドフィルム101が挟持されるように設置される。磁界波シールド効果評価装置11bは、磁界波成分の大きな電磁界を発生させるために、測定治具15にシールド型円形ループ・アンテナ16を使用し、90度角の金属板と組み合わせて、ループ・アンテナの1/4の部分が外部に出ている構造になっている。
次に、シールドフィルムの周波数特性について、図5に示すような、ネットワークアナライザ31を用いて評価した。尚、ネットワークアナライザ31には、ローデ・シュワルツ社製のZVL6を用いた。ネットワークアナライザ31は、入力端子と出力端子とを有し、これらの夫々に接続用基板32が接続されている。この1対の接続用基板32の間に、測定対象のシールドフレキシブルプリント配線板110を空中に浮かした直線状態に支持されるように接続して測定を行う。
次に、シールドフィルムの出力波形特性について、図7に示すような、システム構成を用いて評価した。このシステムは、データジェネレータ41と、オシロスコープ42と、オシロスコープ42に取り付けられたサンプリングモジュール43と1対の接続用基板32とで構成される。
尚、データジェネレータ41には、アジレントテクノロジーズ社製の81133Aを用いた。オシロスコープ42には、テクトロニクス社製のDSC8200を用いた。またサンプリングモジュール43は、テクトロニクス社製の80E03を用いた。
次に、シールドフィルムの形状保持性について評価を行った。尚、50μmポリイミドフィルムの両面に、表1に示すシールドフィルム101を貼り合わせたものを試験体51とした。試験体51は、10mm×100mmの形状に切り出したものを用いた。
図9に示すように、このような試験体51を長手方向の中心付近(50mm辺り)の曲折部51aで軽く折り目を付けるように曲折し、この曲折部51aにより分けられる上部51bと下部51cとが対向するような態様とした。
このような試験体51の全体をPP(ポリプロピレン)基板54上に載置すると共に、試験体51の長手方向と並行になるように、試験体51の両サイドにスペーサとして厚さ0.3mmのSUS板(図示せず)を配置した。そして、上方からシリコンゴム53を下降させて試験体51全体をSUS板と共にプレスした。即ち、0.3mmのSUS板があることにより、試験体51の曲折部51aにおける曲げ半径は0.15mmとなる。
そして、プレスによる加圧力を0.1MPa、0.3MPaの両方の場合について、加圧時間を1秒・3秒・5秒とし、プレス後の試験体51について、上部51bと下部51cとがなす角度(戻り角)を計測した。
後述の表3に、実施例1から5と比較例1,2について、戻り角を計測した結果を示す。評価は両面貼付のものについて、角度が90度以内のものは○、120度を超えるものは×とした。表3によると、圧延銅箔の方が良好な形状保持性を有していることがわかる。即ち、圧延銅箔が、形状保持性にとって有効であることがわかる。
IPC規格に則り、図10に示すように、固定板121と摺動板122との間にシールドフレキシブルプリント配線板111(上記実施例1~5、比較例1、2の試料のいずれかを用いて作製したものである)を、曲率を0.65mm、固定板121と摺動板122とのギャップを1.30mmとした状態でU字型に屈曲させて装着し、試験雰囲気25℃、相対湿度30~50%において、摺動板122を50mmのストローク(摺動領域25mm)、摺動速度60cpmで上下に摺動させたときのシールドフレキシブルプリント配線板おけるシールドフィルムの金属層の耐性(何回の摺動に耐えうるか)について検証した。なお、各シールドフィルムは、長さが140mmのものを使用した。実施例1~5、及び、比較例1,2の検証結果を、形状保持性と共に下記表3に示す。
また、シールド特性においては、金属層が0.5μm以上ある場合に、高いシールド特性を示している。
従って、金属層を少なくとも0.5μmの厚さとして、かつ、異方導電性接着剤を用いることで、シールド特性を維持しつつ高速処理化に対応可能なシールドフィルムを提供することができる。
また、摺動性に関しては、金属層が5μmを超えると極端に低下することがわかる。従って、摺動性を求める場合は、金属層を5μm以下とするのが好ましいことが明らかである。
また、形状保持性に関しては、金属層を銅箔とし、圧延加工により形成した場合に良好な形状保持性が得られることがわかる。従って、形状保持性を求める場合は、圧延銅箔とするのが好ましいことが明らかである。
次に、シールドプリント配線板10を製造する製造工程を経たシールドフィルムとシールドプリント配線板との接続抵抗について測定した(リフロー後の接続抵抗の測定)。具体的には、表4に示すように、実施例6では、銅箔には防錆処理を施さず、シールドフィルム1の金属層3と異方導電性接着剤層4との間に、銀を真空蒸着させて厚み0.05μmにした保護金属層3aを設けたシールドプリント配線板10を使用して、シールドフィルム1とグランド回路6bとの間の接続抵抗値(Ω)を測定した。また、実施例7では、銅箔には防錆処理を施さず、シールドフィルム1の金属層3と異方導電性接着剤層4との間に、銀を真空蒸着させて厚み0.1μmにした保護金属層3aを設けたシールドプリント配線板10を使用して、シールドフィルム1とグランド回路6bとの間の接続抵抗値(Ω)を測定した。また、実施例8では、銅箔には防錆処理を施さず、シールドフィルム1の金属層3と異方導電性接着剤層4との間に、銀をメッキして厚み0.05μmにした保護金属層3aを設けたシールドプリント配線板10を使用して、シールドフィルム1とグランド回路6bとの間の接続抵抗値(Ω)を測定した。また、実施例9では、銅箔には防錆処理を施さず、シールドフィルム1の金属層3と異方導電性接着剤層4との間に、銀をメッキして厚み0.1μmにした保護金属層3aを設けたシールドプリント配線板10を使用して、シールドフィルム1とグランド回路6bとの間の接続抵抗値(Ω)を測定した。また、実施例5では、銅箔の処理として防錆処理を施し、保護金属層3aを設けないシールドプリント配線板におけるシールドフィルム1とグランド回路6bとの間の接続抵抗値(Ω)を測定した。なお、実施例5~9のシールドフィルム1は、絶縁層2の厚みを5μm、金属層3(圧延銅箔)の厚みを6μm、異方導電性接着剤層4の厚みを9μmにしており、また、実施例6~9のシールドフィルム1は、金属層3と異方導電性接着剤層4との間に保護金属層3aを更に設けた構成としている。
2 絶縁層
3 金属層
4 異方導電性接着剤層
5 ベースフィルム
6 プリント回路
6a 信号回路
6b グランド回路
6c 非絶縁部
7 絶縁フィルム
7a 絶縁除去部
8 基体フィルム
10 シールドプリント配線板
Claims (12)
- 層厚が0.5μm~12μmの金属層と、異方導電性接着剤層とを積層状態で備えたことを特徴とするシールドフィルム。
- 前記金属層が金属箔であることを特徴とする請求項1に記載のシールドフィルム。
- 前記金属箔が圧延加工により形成されたものであることを特徴とする請求項2に記載のシールドフィルム。
- 前記金属箔は、エッチングにより層厚が調整されたものであることを特徴とする請求項3に記載のシールドフィルム。
- 前記金属箔は、銅を主成分としていることを特徴とする請求項4に記載のシールドフィルム。
- 前記銅を主成分とする金属箔で形成された金属層と前記異方導電性接着剤層との間に保護金属層を設けたことを特徴とする請求項5に記載のシールドフィルム。
- 前記金属層は、アディティブ法により形成されたものであることを特徴とする請求項1に記載のシールドフィルム。
- 前記アディティブ法として、電解メッキ法及び無電解メッキ法の少なくとも1つを使用して前記金属層を形成したことを特徴とする請求項7に記載のシールドフィルム。
- 10MHz~10GHzの周波数の信号を伝送する信号伝送系に対する電磁波シールドフィルムとして適用されることを特徴とする請求項1乃至8の何れか1項に記載のシールドフィルム。
- プリント回路が形成されたベース部材と、当該プリント回路を覆って当該ベース部材上に設けられた絶縁フィルムと、を有したプリント配線板と、
前記プリント配線板上に設けられた請求項1乃至8の何れか1項に記載のシールドフィルムと、
を有することを特徴とするシールドプリント配線板。 - 前記プリント回路は、グランド用配線パターンを含んでいることを特徴とする請求項10に記載のシールドプリント配線板。
- 圧延加工により所定寸法の層厚の金属箔とした後に、その金属箔をエッチングにより0.5μm~12μm内の所定の層厚にする工程と、
前記金属層の一方面に異方導電性接着剤層を形成する工程と
を備えたことを特徴とするシールドフィルムの製造方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/360,609 US10015915B2 (en) | 2011-11-24 | 2012-10-12 | Shield film, shielded printed wiring board, and method for manufacturing shield film |
| KR1020197026802A KR20190107768A (ko) | 2011-11-24 | 2012-10-12 | 차폐 필름, 차폐 프린트 배선판, 및 차폐 필름의 제조 방법 |
| KR20147014926A KR20140099258A (ko) | 2011-11-24 | 2012-10-12 | 차폐 필름, 차폐 프린트 배선판, 및 차폐 필름의 제조 방법 |
| US15/019,775 US10051765B2 (en) | 2011-11-24 | 2016-02-09 | Shield film, shielded printed wiring board, and method for manufacturing shield film |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011256816 | 2011-11-24 | ||
| JP2011-256816 | 2011-11-24 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/360,609 A-371-Of-International US10015915B2 (en) | 2011-11-24 | 2012-10-12 | Shield film, shielded printed wiring board, and method for manufacturing shield film |
| US15/019,775 Continuation US10051765B2 (en) | 2011-11-24 | 2016-02-09 | Shield film, shielded printed wiring board, and method for manufacturing shield film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013077108A1 true WO2013077108A1 (ja) | 2013-05-30 |
Family
ID=48469561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2012/076473 Ceased WO2013077108A1 (ja) | 2011-11-24 | 2012-10-12 | シールドフィルム、シールドプリント配線板、及び、シールドフィルムの製造方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US10015915B2 (ja) |
| JP (5) | JPWO2013077108A1 (ja) |
| KR (2) | KR20140099258A (ja) |
| CN (2) | CN103140126A (ja) |
| TW (1) | TWI596998B (ja) |
| WO (1) | WO2013077108A1 (ja) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014241330A (ja) * | 2013-06-11 | 2014-12-25 | 住友電工プリントサーキット株式会社 | シールドフィルム及びプリント配線板 |
| JP2015065343A (ja) * | 2013-09-25 | 2015-04-09 | タツタ電線株式会社 | シールド収容体、プリント回路板、電子機器、及び、シールド収容体の製造方法 |
| WO2016136247A1 (ja) * | 2015-02-25 | 2016-09-01 | 東洋インキScホールディングス株式会社 | 電磁波シールドシート、電磁波シールド性配線回路基板および電子機器 |
| WO2016190278A1 (ja) * | 2015-05-26 | 2016-12-01 | タツタ電線株式会社 | シールドフィルムおよびシールドプリント配線板 |
| US10015915B2 (en) | 2011-11-24 | 2018-07-03 | Tatsuta Electric Wire & Cable Co., Ltd. | Shield film, shielded printed wiring board, and method for manufacturing shield film |
| KR20190073037A (ko) * | 2017-12-18 | 2019-06-26 | 주식회사 잉크테크 | 전자파 차폐필름, 인쇄회로기판 제조방법 및 전자파 차폐필름 제조방법 |
| JP2020080345A (ja) * | 2018-11-12 | 2020-05-28 | 信越ポリマー株式会社 | 電磁波シールドフィルムおよび電磁波シールドフィルム付きプリント配線板 |
| JP2020167250A (ja) * | 2019-03-29 | 2020-10-08 | 東洋インキScホールディングス株式会社 | 電磁波シールドシート、電磁波シールド性配線回路基板および電子機器 |
| US10820457B1 (en) | 2019-05-30 | 2020-10-27 | Toyo Ink Sc Holdings Co., Ltd. | Electromagnetic wave shielding sheet and printed wiring board |
| KR20200144492A (ko) | 2019-06-18 | 2020-12-29 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트, 및 전자파 차폐성 배선 회로 기판 |
| KR102238608B1 (ko) | 2019-12-18 | 2021-04-09 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트 및 전자파 차폐성 배선 회로 기판 |
| KR102238611B1 (ko) | 2020-01-21 | 2021-04-09 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트 및 전자파 차폐성 배선 회로 기판 |
| KR20210142643A (ko) | 2019-03-22 | 2021-11-25 | 타츠타 전선 주식회사 | 전자파 차폐 필름 |
| KR20240167785A (ko) | 2022-03-29 | 2024-11-28 | 타츠타 전선 주식회사 | 전자파 실드 필름 |
| KR20250088703A (ko) | 2022-10-12 | 2025-06-17 | 타츠타 전선 주식회사 | 전자파 차폐 필름 및 차폐 프린트 배선판 |
| KR20250119519A (ko) | 2022-12-02 | 2025-08-07 | 타츠타 전선 주식회사 | 전자파 차폐 필름 및 전자파 차폐 필름의 제조 방법 |
| WO2025206251A1 (ja) * | 2024-03-29 | 2025-10-02 | タツタ電線株式会社 | 電磁波シールドフィルム |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102026751B1 (ko) * | 2013-05-28 | 2019-09-30 | 타츠타 전선 주식회사 | 형상 유지 필름, 및 이 형상 유지 필름을 구비한 형상 유지형 플렉시블 배선판 |
| TWI573498B (zh) * | 2013-07-26 | 2017-03-01 | Adv Flexible Circuits Co Ltd | The flattened cladding structure of soft circuit board |
| CN104582240B (zh) * | 2013-10-25 | 2017-08-25 | 富葵精密组件(深圳)有限公司 | 电路板及电路板制作方法 |
| US9345181B2 (en) * | 2014-08-19 | 2016-05-17 | T-Kingdom Co., Ltd. | Shielding film and method of manufacturing same |
| JP6781631B2 (ja) * | 2014-08-29 | 2020-11-04 | タツタ電線株式会社 | フレキシブルプリント配線板用補強部材、及びそれを備えたフレキシブルプリント配線板 |
| JP6184025B2 (ja) * | 2014-09-04 | 2017-08-23 | 信越ポリマー株式会社 | 電磁波シールドフィルムおよび電磁波シールドフィルム付きフレキシブルプリント配線板の製造方法 |
| JP6467701B2 (ja) * | 2014-10-28 | 2019-02-13 | 信越ポリマー株式会社 | 電磁波シールドフィルム、電磁波シールドフィルム付きフレキシブルプリント配線板、およびそれらの製造方法 |
| JP2016092053A (ja) * | 2014-10-30 | 2016-05-23 | 京セラサーキットソリューションズ株式会社 | 配線基板 |
| JP6461577B2 (ja) * | 2014-11-28 | 2019-01-30 | 東洋アルミニウム株式会社 | Rfid用インレットアンテナ及びrfid並びにそれらの製造方法 |
| US10665568B2 (en) * | 2014-12-12 | 2020-05-26 | Meiko Electronics Co., Ltd. | Encapsulated circuit module, and production method therefor |
| CN105828587A (zh) * | 2015-01-06 | 2016-08-03 | 富葵精密组件(深圳)有限公司 | 感光油墨及应用其的电磁屏蔽结构、电路板、电子装置 |
| CN105139922A (zh) * | 2015-09-21 | 2015-12-09 | 杨天纬 | 一种用于线缆的屏蔽膜及制造方法及线材的制造方法 |
| CN105139923A (zh) * | 2015-09-21 | 2015-12-09 | 杨天纬 | 一种用于线缆的屏蔽膜及制造方法及线材的制造方法 |
| KR102280175B1 (ko) * | 2016-03-23 | 2021-07-20 | 타츠타 전선 주식회사 | 전자파 차폐 필름 |
| CN107234803B (zh) * | 2016-03-28 | 2019-08-30 | 努比亚技术有限公司 | 一种粘贴保护膜时的处理系统和方法 |
| KR102520709B1 (ko) | 2016-04-19 | 2023-04-12 | 삼성디스플레이 주식회사 | 인쇄회로기판용 보호테이프 및 이를 구비하는 디스플레이 장치 |
| KR20170123747A (ko) * | 2016-04-29 | 2017-11-09 | 삼성전자주식회사 | 차폐 부재 및 그를 포함하는 전자 장치 |
| JP2018010888A (ja) * | 2016-07-11 | 2018-01-18 | 藤森工業株式会社 | 電磁波シールド材 |
| CN106061103A (zh) * | 2016-07-21 | 2016-10-26 | 东莞市航晨纳米材料有限公司 | 一种高柔软性电磁屏蔽膜及其制造方法 |
| CN107914435B (zh) * | 2016-10-10 | 2019-10-29 | 昆山雅森电子材料科技有限公司 | 一种多层异向导电胶膜及其制作方法 |
| KR102467723B1 (ko) * | 2017-02-13 | 2022-11-16 | 타츠타 전선 주식회사 | 그라운드 부재, 차폐 프린트 배선판 및 차폐 프린트 배선판의 제조 방법 |
| KR20190115020A (ko) * | 2017-02-13 | 2019-10-10 | 타츠타 전선 주식회사 | 프린트 배선판 |
| TWI658753B (zh) * | 2017-03-17 | 2019-05-01 | 易鼎股份有限公司 | Signal anti-attenuation shielding structure of flexible circuit board |
| US10080277B1 (en) * | 2017-03-17 | 2018-09-18 | Advanced Flexible Circuits Co., Ltd. | Attenuation reduction structure for flexible circuit board |
| KR101966230B1 (ko) * | 2017-03-24 | 2019-04-30 | (주)창성 | 롤투롤 공정을 이용한 fpcb용 다층 전자파 차폐 필름 제조방법 |
| US10159143B1 (en) * | 2017-07-31 | 2018-12-18 | Advanced Flexible Circuits Co., Ltd. | Attenuation reduction structure for flexible circuit board |
| EP3468312B1 (en) * | 2017-10-06 | 2023-11-29 | AT & S Austria Technologie & Systemtechnik Aktiengesellschaft | Method of manufacturing a component carrier having a three dimensionally printed wiring structure |
| FR3074400B1 (fr) * | 2017-11-30 | 2019-10-25 | Safran Electronics & Defense | Circuit imprime flexible avec piste de masse intermediaire |
| US12150239B2 (en) | 2018-12-11 | 2024-11-19 | Tatsuta Electric Wire & Cable Co., Ltd. | Method for manufacturing shielded printed wiring board and shielded printed wiring board |
| KR102843874B1 (ko) * | 2019-04-09 | 2025-08-08 | 삼성전자주식회사 | 연성 인쇄 회로 기판 및 그 연성 인쇄 회로 기판을 포함하는 전자 장치 |
| US11647618B2 (en) * | 2019-05-29 | 2023-05-09 | Tatsuta Electric Wire & Cable Co., Ltd. | Electromagnetic wave shielding film and shielding printed wiring board |
| JP6624331B1 (ja) * | 2019-08-01 | 2019-12-25 | 東洋インキScホールディングス株式会社 | 電磁波シールドシート、および電磁波シールド性配線回路基板 |
| CN112771598B (zh) * | 2019-08-01 | 2023-09-29 | 京东方科技集团股份有限公司 | 显示装置及其组装方法 |
| KR102705794B1 (ko) * | 2019-08-05 | 2024-09-12 | 삼성전자 주식회사 | 차폐 필름을 포함하는 플렉서블 케이블 |
| TWI829973B (zh) * | 2020-02-25 | 2024-01-21 | 日商拓自達電線股份有限公司 | 電磁波屏蔽膜 |
| CN111465175B (zh) * | 2020-04-23 | 2022-08-12 | 京东方科技集团股份有限公司 | 电路板及其制备方法、电子设备 |
| JP7772354B2 (ja) * | 2021-04-30 | 2025-11-18 | 株式会社コバヤシ | めっき用プライマー組成物 |
| TW202313327A (zh) * | 2021-09-29 | 2023-04-01 | 日商拓自達電線股份有限公司 | 電磁波屏蔽膜 |
| US11747295B2 (en) * | 2021-10-18 | 2023-09-05 | Dell Products L.P. | System and method of determining humidity levels within information handling systems |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007294918A (ja) * | 2006-03-29 | 2007-11-08 | Tatsuta System Electronics Kk | シールドフィルム及びシールドプリント配線板 |
| JP2008120081A (ja) * | 2006-11-11 | 2008-05-29 | Joinset Co Ltd | 軟性金属積層フィルム及びその製造方法 |
| JP2009200113A (ja) * | 2008-02-19 | 2009-09-03 | Nitto Denko Corp | シールド配線回路基板 |
| JP2009206188A (ja) * | 2008-02-26 | 2009-09-10 | Panasonic Electric Works Co Ltd | フレキシブルプリント配線板 |
Family Cites Families (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3498386B2 (ja) | 1994-10-19 | 2004-02-16 | 住友電気工業株式会社 | シールド付きフレキシブル配線板及びその製造方法 |
| JP2000013089A (ja) | 1998-06-25 | 2000-01-14 | Tomoegawa Paper Co Ltd | ディスプレイ用電磁波シールド材 |
| MY123910A (en) | 1998-08-10 | 2006-06-30 | Sumitomo Bakelite Co | Transparent electromagnetic wave shield |
| JP2000059075A (ja) | 1998-08-10 | 2000-02-25 | Sumitomo Bakelite Co Ltd | 電磁波遮蔽透明体 |
| CN101330800B (zh) | 2001-07-19 | 2011-03-23 | 东丽株式会社 | 电路基板的制造方法 |
| KR101022091B1 (ko) * | 2001-11-22 | 2011-03-17 | 파나소닉 주식회사 | 부호화 방법 및 부호화 장치 |
| JP4156233B2 (ja) | 2001-12-19 | 2008-09-24 | 大日本印刷株式会社 | 電磁波シールド材、及び電磁波シールド付きフラットケーブル |
| JP2008300881A (ja) | 2002-02-05 | 2008-12-11 | Toray Ind Inc | 回路基板用部材およびそれを用いた電子部品実装回路基板の製造方法 |
| JP4330868B2 (ja) | 2002-11-27 | 2009-09-16 | タツタ電線株式会社 | プリント配線板およびその製造方法 |
| JP2005235509A (ja) * | 2004-02-18 | 2005-09-02 | Jsr Corp | 異方導電性シートおよび回路装置の検査装置並びに回路装置の検査方法 |
| JP4647924B2 (ja) | 2004-03-23 | 2011-03-09 | タツタ電線株式会社 | プリント配線板用シールドフィルム及びその製造方法 |
| JP2005277262A (ja) | 2004-03-26 | 2005-10-06 | Toray Ind Inc | 電磁波シールドフィルム |
| CN101069461B (zh) | 2004-12-03 | 2010-12-08 | 新田股份有限公司 | 电磁干扰抑制体、天线装置及电子信息传输装置 |
| JP4575189B2 (ja) | 2005-02-21 | 2010-11-04 | タツタ電線株式会社 | シールドフレキシブルプリント配線板のシールドフィルム及びそれを用いたシールドフレキシブルプリント配線板 |
| JP2006303067A (ja) | 2005-04-19 | 2006-11-02 | Nippon Jitsupaa Chiyuubingu Kk | 発塵防止型導電性シート及びその製造方法 |
| JP4319167B2 (ja) * | 2005-05-13 | 2009-08-26 | タツタ システム・エレクトロニクス株式会社 | シールドフィルム、シールドプリント配線板、シールドフレキシブルプリント配線板、シールドフィルムの製造方法及びシールドプリント配線板の製造方法 |
| US7957154B2 (en) | 2005-12-16 | 2011-06-07 | Ibiden Co., Ltd. | Multilayer printed circuit board |
| JP2007193999A (ja) | 2006-01-17 | 2007-08-02 | Sony Chemical & Information Device Corp | 伝送ケーブル |
| WO2007119513A1 (ja) | 2006-03-29 | 2007-10-25 | Tatsuta System Electronics Co., Ltd. | シールドフィルム及びシールドプリント配線板 |
| JP4974803B2 (ja) | 2007-08-03 | 2012-07-11 | タツタ電線株式会社 | プリント配線板用シールドフィルム及びプリント配線板 |
| JP5213106B2 (ja) | 2008-01-17 | 2013-06-19 | デクセリアルズ株式会社 | フラットケーブル |
| JP2009177010A (ja) * | 2008-01-25 | 2009-08-06 | Toshiba Corp | フレキシブルプリント配線板および電子機器 |
| JP2009246121A (ja) | 2008-03-31 | 2009-10-22 | Nippon Steel Chem Co Ltd | 電磁波シールド材及びその製造方法 |
| JP5139156B2 (ja) | 2008-05-30 | 2013-02-06 | タツタ電線株式会社 | 電磁波シールド材及びプリント配線板 |
| JP2010108779A (ja) | 2008-10-30 | 2010-05-13 | Sony Chemical & Information Device Corp | シールド材及びその製造方法、フレキシブルフラットケーブル及びその製造方法、並びに、電子機器 |
| JP2011066329A (ja) | 2009-09-18 | 2011-03-31 | Tatsuta Electric Wire & Cable Co Ltd | シールドフィルム、そのシールドフィルムを有するシールド配線板、シールドフィルムにおけるグランド接続方法 |
| WO2011108878A2 (ko) * | 2010-03-05 | 2011-09-09 | 성균관대학교산학협력단 | 그래핀을 이용한 전자파 차폐 방법 및 전자파 차폐재 |
| CN102387656B (zh) * | 2010-08-30 | 2013-10-09 | 富葵精密组件(深圳)有限公司 | 具有接地屏蔽结构的电路板及其制作方法 |
| KR20140099258A (ko) | 2011-11-24 | 2014-08-11 | 다츠다 덴센 가부시키가이샤 | 차폐 필름, 차폐 프린트 배선판, 및 차폐 필름의 제조 방법 |
-
2012
- 2012-10-12 KR KR20147014926A patent/KR20140099258A/ko not_active Ceased
- 2012-10-12 JP JP2013545845A patent/JPWO2013077108A1/ja active Pending
- 2012-10-12 WO PCT/JP2012/076473 patent/WO2013077108A1/ja not_active Ceased
- 2012-10-12 KR KR1020197026802A patent/KR20190107768A/ko not_active Ceased
- 2012-10-12 US US14/360,609 patent/US10015915B2/en active Active
- 2012-10-19 TW TW101138571A patent/TWI596998B/zh active
- 2012-11-08 CN CN201210443949XA patent/CN103140126A/zh active Pending
- 2012-11-08 CN CN2012205866628U patent/CN203225988U/zh not_active Expired - Lifetime
-
2014
- 2014-12-18 JP JP2014256256A patent/JP6321535B2/ja active Active
-
2015
- 2015-10-23 JP JP2015208838A patent/JP2016036044A/ja active Pending
- 2015-10-23 JP JP2015208837A patent/JP2016040837A/ja active Pending
-
2016
- 2016-02-09 US US15/019,775 patent/US10051765B2/en active Active
-
2019
- 2019-02-12 JP JP2019022389A patent/JP2019083205A/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007294918A (ja) * | 2006-03-29 | 2007-11-08 | Tatsuta System Electronics Kk | シールドフィルム及びシールドプリント配線板 |
| JP2008120081A (ja) * | 2006-11-11 | 2008-05-29 | Joinset Co Ltd | 軟性金属積層フィルム及びその製造方法 |
| JP2009200113A (ja) * | 2008-02-19 | 2009-09-03 | Nitto Denko Corp | シールド配線回路基板 |
| JP2009206188A (ja) * | 2008-02-26 | 2009-09-10 | Panasonic Electric Works Co Ltd | フレキシブルプリント配線板 |
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10051765B2 (en) | 2011-11-24 | 2018-08-14 | Tatsuta Electric Wire & Cable Co., Ltd. | Shield film, shielded printed wiring board, and method for manufacturing shield film |
| US10015915B2 (en) | 2011-11-24 | 2018-07-03 | Tatsuta Electric Wire & Cable Co., Ltd. | Shield film, shielded printed wiring board, and method for manufacturing shield film |
| JP2014241330A (ja) * | 2013-06-11 | 2014-12-25 | 住友電工プリントサーキット株式会社 | シールドフィルム及びプリント配線板 |
| JP2015065343A (ja) * | 2013-09-25 | 2015-04-09 | タツタ電線株式会社 | シールド収容体、プリント回路板、電子機器、及び、シールド収容体の製造方法 |
| WO2016136247A1 (ja) * | 2015-02-25 | 2016-09-01 | 東洋インキScホールディングス株式会社 | 電磁波シールドシート、電磁波シールド性配線回路基板および電子機器 |
| JP2016157838A (ja) * | 2015-02-25 | 2016-09-01 | 東洋インキScホールディングス株式会社 | 電磁波シールドシート、電磁波シールド性配線回路基板および電子機器 |
| CN107409483A (zh) * | 2015-02-25 | 2017-11-28 | 东洋油墨Sc控股株式会社 | 电磁波遮蔽片、电磁波遮蔽性配线电路基板及电子机器 |
| KR101812713B1 (ko) | 2015-02-25 | 2017-12-27 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트, 전자파 차폐성 배선 회로 기판 및 전자 기기 |
| CN107409483B (zh) * | 2015-02-25 | 2020-08-18 | 东洋油墨Sc控股株式会社 | 电磁波遮蔽片、电磁波遮蔽性配线电路基板及电子机器 |
| US10196545B2 (en) | 2015-05-26 | 2019-02-05 | Tatsuta Electric Wire & Cable Co., Ltd. | Shielding film and shielded printed wiring board |
| JPWO2016190278A1 (ja) * | 2015-05-26 | 2018-03-01 | タツタ電線株式会社 | シールドフィルムおよびシールドプリント配線板 |
| WO2016190278A1 (ja) * | 2015-05-26 | 2016-12-01 | タツタ電線株式会社 | シールドフィルムおよびシールドプリント配線板 |
| KR20190073037A (ko) * | 2017-12-18 | 2019-06-26 | 주식회사 잉크테크 | 전자파 차폐필름, 인쇄회로기판 제조방법 및 전자파 차폐필름 제조방법 |
| KR102197471B1 (ko) | 2017-12-18 | 2021-01-04 | 주식회사 잉크테크 | 전자파 차폐필름, 인쇄회로기판 제조방법 및 전자파 차폐필름 제조방법 |
| JP2020080345A (ja) * | 2018-11-12 | 2020-05-28 | 信越ポリマー株式会社 | 電磁波シールドフィルムおよび電磁波シールドフィルム付きプリント配線板 |
| KR20210142643A (ko) | 2019-03-22 | 2021-11-25 | 타츠타 전선 주식회사 | 전자파 차폐 필름 |
| JP2020167250A (ja) * | 2019-03-29 | 2020-10-08 | 東洋インキScホールディングス株式会社 | 電磁波シールドシート、電磁波シールド性配線回路基板および電子機器 |
| JP7544173B2 (ja) | 2019-03-29 | 2024-09-03 | artience株式会社 | 電磁波シールドシート、電磁波シールド性配線回路基板および電子機器 |
| JP2023083317A (ja) * | 2019-03-29 | 2023-06-15 | 東洋インキScホールディングス株式会社 | 電磁波シールドシート、電磁波シールド性配線回路基板および電子機器 |
| JP7268446B2 (ja) | 2019-03-29 | 2023-05-08 | 東洋インキScホールディングス株式会社 | 電磁波シールドシート、電磁波シールド性配線回路基板および電子機器 |
| KR20200137937A (ko) | 2019-05-30 | 2020-12-09 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트 및 프린트 배선판 |
| KR20210130685A (ko) | 2019-05-30 | 2021-11-01 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트 및 프린트 배선판 |
| US11533833B2 (en) | 2019-05-30 | 2022-12-20 | Toyo Ink Sc Holdings Co., Ltd. | Electromagnetic wave shielding sheet and printed wiring board |
| US10820457B1 (en) | 2019-05-30 | 2020-10-27 | Toyo Ink Sc Holdings Co., Ltd. | Electromagnetic wave shielding sheet and printed wiring board |
| KR20200145812A (ko) | 2019-06-18 | 2020-12-30 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트, 및 전자파 차폐성 배선 회로 기판 |
| KR20200144492A (ko) | 2019-06-18 | 2020-12-29 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트, 및 전자파 차폐성 배선 회로 기판 |
| KR102238608B1 (ko) | 2019-12-18 | 2021-04-09 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트 및 전자파 차폐성 배선 회로 기판 |
| KR102238611B1 (ko) | 2020-01-21 | 2021-04-09 | 토요잉크Sc홀딩스주식회사 | 전자파 차폐 시트 및 전자파 차폐성 배선 회로 기판 |
| KR20240167785A (ko) | 2022-03-29 | 2024-11-28 | 타츠타 전선 주식회사 | 전자파 실드 필름 |
| KR20250088703A (ko) | 2022-10-12 | 2025-06-17 | 타츠타 전선 주식회사 | 전자파 차폐 필름 및 차폐 프린트 배선판 |
| KR20250119519A (ko) | 2022-12-02 | 2025-08-07 | 타츠타 전선 주식회사 | 전자파 차폐 필름 및 전자파 차폐 필름의 제조 방법 |
| WO2025206251A1 (ja) * | 2024-03-29 | 2025-10-02 | タツタ電線株式会社 | 電磁波シールドフィルム |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015109449A (ja) | 2015-06-11 |
| CN203225988U (zh) | 2013-10-02 |
| JP2019083205A (ja) | 2019-05-30 |
| US20160205817A1 (en) | 2016-07-14 |
| KR20140099258A (ko) | 2014-08-11 |
| KR20190107768A (ko) | 2019-09-20 |
| US10015915B2 (en) | 2018-07-03 |
| US10051765B2 (en) | 2018-08-14 |
| US20140326484A1 (en) | 2014-11-06 |
| TWI596998B (zh) | 2017-08-21 |
| TW201322836A (zh) | 2013-06-01 |
| JP2016040837A (ja) | 2016-03-24 |
| JPWO2013077108A1 (ja) | 2015-04-27 |
| CN103140126A (zh) | 2013-06-05 |
| JP2016036044A (ja) | 2016-03-17 |
| JP6321535B2 (ja) | 2018-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6321535B2 (ja) | シールドフィルム、シールドプリント配線板、及び、シールドフィルムの製造方法 | |
| TWI627881B (zh) | 屏蔽膜及屏蔽印刷電路板 | |
| JP6240376B2 (ja) | シールドフィルム、及び、シールドプリント配線板 | |
| JP5899031B2 (ja) | 導電性粘着シート、その製造方法およびプリント配線板 | |
| JP2015133474A (ja) | 電磁波シールドフィルム及びシールドフィルムを含む回路基板の作製方法 | |
| US20110308841A1 (en) | Coverlay film, method for manufacturing coverlay film, and flexible printed wiring board | |
| TWI837383B (zh) | 電磁波屏蔽片及電磁波屏蔽性配線電路基板 | |
| US20210059042A1 (en) | Electromagnetic Shielding Film and Shielded Printed Wiring Board Including the Same | |
| JP5798980B2 (ja) | 導電性粘着シート、その製造方法およびプリント配線板 | |
| CN111826617A (zh) | 电磁波屏蔽膜及其制备方法 | |
| CN110769677A (zh) | 电磁屏蔽膜、线路板及电磁屏蔽膜的制备方法 | |
| CN104219873B (zh) | 形状保持薄膜、及具备该薄膜的形状保持型柔性电路板 | |
| HK1183198A (en) | Shield film, sheilded printed board and method for manufacturing shield film | |
| JP2017212472A (ja) | シールドフィルム、及び、シールドプリント配線板 | |
| CN110691497A (zh) | 电磁屏蔽膜、线路板及电磁屏蔽膜的制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12851237 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2013545845 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 20147014926 Country of ref document: KR Kind code of ref document: A |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 12851237 Country of ref document: EP Kind code of ref document: A1 |