WO2013188997A1 - 一种高屏蔽效能的极薄屏蔽膜及其制作方法 - Google Patents

一种高屏蔽效能的极薄屏蔽膜及其制作方法 Download PDF

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Publication number
WO2013188997A1
WO2013188997A1 PCT/CN2012/001325 CN2012001325W WO2013188997A1 WO 2013188997 A1 WO2013188997 A1 WO 2013188997A1 CN 2012001325 W CN2012001325 W CN 2012001325W WO 2013188997 A1 WO2013188997 A1 WO 2013188997A1
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Prior art keywords
layer
shielding
solid
film
nickel
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PCT/CN2012/001325
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English (en)
French (fr)
Inventor
苏陟
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广州方邦电子有限公司
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Application filed by 广州方邦电子有限公司 filed Critical 广州方邦电子有限公司
Priority to US14/384,245 priority Critical patent/US9526195B2/en
Priority to KR1020147026851A priority patent/KR20140142708A/ko
Priority to JP2015509274A priority patent/JP2015523709A/ja
Publication of WO2013188997A1 publication Critical patent/WO2013188997A1/zh

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073Shielding materials
    • H05K9/0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0084Electromagnetic 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
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073Shielding materials
    • H05K9/0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0088Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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    • Y10T428/12736Al-base component
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Definitions

  • the invention relates to the field of a flexible circuit board and a shielding film for a rigid-flex circuit board, in particular to a very thin shielding film with high shielding performance and a manufacturing method thereof.
  • anti-electromagnetic interference technologies include: shielding technology, grounding technology and filtering technology.
  • circuit boards including flexible circuit boards, hard boards, and rigid-flex circuit boards
  • anti-electromagnetic interference is mainly considered from the following aspects.
  • the electromagnetic shielding film has better handling and practical properties in terms of flexibility and thickness. Widely used in flexible circuit boards and rigid-flex circuit boards.
  • the first structure is as follows:
  • the Chinese Patent No. Publication No. CN 101176388A entitled "Shielding Film, Shielded Printed Circuit Board, Shielded Flexible Printed Circuit Board, Shielding Film Manufacturing Method, and Shielded Printed Circuit Board Manufacturing Method” discloses a shielding film which is the outermost The hard layer and the second outer soft layer form an insulating layer, a solid metal conductor layer is formed on the soft layer, and then a layer of heat-cured conductive adhesive layer is formed on the solid metal conductor layer due to a solid metal shield
  • the shielding film has a high shielding effectiveness. However, as the frequency increases, especially when the frequency exceeds 1 GHz, the shielding performance is greatly reduced, and the shielding performance requirement of 60 dB or more cannot be met. Therefore, for products requiring more than 60 dB of stable shielding performance, many manufacturers still choose to print. The thickness of the silver paste is achieved.
  • the announcement number is CN101448362B.
  • the product structure disclosed in the Chinese invention patent entitled "Extremely thin shielding film, circuit board and its manufacturing method which can change the impedance of the circuit" is a three-layer structure, the insulating layer is the outermost layer, then a layer of metal.
  • the conductor layer is finally coated with a layer of thermally cured conductive paste on the metal conductor layer.
  • the invention patent focuses on the final impedance control by changing the grid size of the metal conductor layer;
  • the second structure is as follows:
  • the Chinese invention patent entitled "Electrical component with conductive layer and conductive film and its manufacturing method" disclosed in CN 1842245A is composed of two layers of crucible.
  • the outermost layer is a metal conductor layer, followed by a conductive adhesive layer. Compared to the first structure, the outermost layer has no insulating layer, and the outermost layer can be directly connected to the metal.
  • the shield is formed by a layer of metal conductor and then coated with a conductive layer. The shielding effect is not fundamentally different from the first type of crusting described above.
  • the third structure is as follows:
  • the Chinese Patent No. Publication No. CN 101120627A entitled "Electromagnetic Wave Shielding Adhesive Film, Its Preparation Method, and Electromagnetic Wave Shielding Method of Adhesive" is disclosed by a two-layer structure, the outermost insulating layer, and then A full range of conductive adhesive layers.
  • This structure has no solid metal film layer structure with respect to the first and second structures. It is able to achieve thinner requirements, better bending resistance and cheaper.
  • the most important indicator is the shielding effectiveness. Due to the lack of a solid shielding metal conductor layer, the shielding efficiency cannot reach 40 dB when the transmission frequency exceeds 1 GHz.
  • the fourth structure is as follows:
  • the publication number is CN 2626193Y, the name is "composite material with high thermal conductivity and electromagnetic shielding function".
  • the Chinese invention patent discloses a two-layer shielding layer, but the electromagnetic shielding layer is in a checkerboard pattern, and the two shielding layers are arranged at a high level. Formed in the heat conductive layer.
  • the thermal conductive glue contains ground heat-conducting particles, and the accumulated electric charge in the shielding layer cannot be introduced into the grounding layer to achieve stable high-frequency signal shielding; on the other hand, the metal conductor layer is in a checkerboard shape, not a solid metal shielding layer structure. , can not achieve very high shielding effectiveness.
  • the fifth structure is as follows:
  • the Chinese invention patent entitled "Electromagnetic Double Shielding Membrane” published by CN 1819758A discloses an electromagnetic double shielding film using austenitic nickel-chromium stainless steel as a sputtering target, which is for the surface processing of plastics, and the whole The production efficiency is extremely low, and large-scale production of a coil-shaped extremely thin shielding film cannot be achieved.
  • the sixth structure is as follows:
  • the Chinese invention patent entitled "Shielding Structure and Flexible Printed Circuit Board Having the Shielding Structure” disclosed in CN 101521985A discloses a shielding film which is first formed by coating to form a single-faced scratch.
  • the copper clad laminate structure is then coated with a conductive paste on the metal layer, wherein the metallic copper layer is between 1-6 microns and the polyimide is in the range of 3- 10 microns. Since the thickness of the metal layer is greater than 1 micrometer, which is much higher than the thickness of the shielding metal layer on the market, the hardness is greatly increased, which is not favorable for the flexibility requirement.
  • the structural metal foil needs carrier support and the process is complicated, the cost is high, and the flawless field is competitive.
  • the seventh structure is as follows:
  • the Chinese Patent No. Publication No. CN 101772996A entitled "Shielding Film for Printed Wiring Boards and Printed Wiring Boards” discloses a shielding film which obtains repeated bending and sliding for a bending radius from a large bending radius to a small bending radius.
  • the first metal layer is a layer formed of one or more scaly metal particles
  • the second metal layer is a porous layer having a plurality of pores. It is difficult to achieve extremely high shielding effectiveness.
  • a layer of a complete metal conductor layer coated with a conductive adhesive structure or a structure having only one layer of a versatile conductive paste; or a layer of a metal conductor layer having no solid metal conductor layer and Thermally conductive structural design without grounding design. Or it can not meet the shielding performance of 60dB or more, or can not meet the bending performance, or can not meet the peel strength, or can not meet the oxidation resistance, or can not meet the scale production of ultra-thin roll production.
  • An object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide an extremely thin shielding film which has excellent anti-interference performance and can provide good bending performance and high shielding effectiveness to meet the light and thin requirements of electronic products.
  • Another object of the present invention is to provide a method for fabricating an extremely thin shielding film having high shielding effectiveness.
  • the present invention is achieved in this way: A very thin shielding film of high shielding effectiveness comprising more than two layers of solid shielding layers.
  • the solid shielding layers are sequentially formed on the layer-by-layer surface.
  • At least two layers of the solid shielding layer are made of different materials.
  • An outer surface of one side of the outermost solid shielding layer is formed with a conductive adhesive layer, and an outer surface of one side of the outermost solid shielding layer is formed with an insulating film layer.
  • the insulating film layer may be a plurality of insulating film layers, or various resin layers, or may be formed by coating different resin layers on the insulating film.
  • the outer surface of the insulating film layer is covered with a carrier film layer, and the outer surface of the conductive adhesive layer can be as needed A protective film is formed.
  • the insulating film layer is composed of a first insulating film layer and a second insulating film layer which are connected together and has a thickness of 3 to 25 ⁇ m.
  • the material of the first insulating film layer is polyphenylene sulfide (PPS), polyethylene naphthalate (PEN), polyester or polyimide film;
  • the second insulating film layer is coated Epoxy resin, urethane resin, acrylic resin or polyimide resin.
  • the material of the solid shielding layer is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver or gold, or a metal alloy containing any one or more of the above metals, including but not limited to nickel-chromium alloy.
  • Materials such as copper-nickel alloy, titanium-manganese alloy, and nickel-chromium-based stainless steel; or materials such as ferrite and carbon nanotube.
  • the thickness is between 0.1 ⁇ m and 0.5 ⁇ m. Consider the bending requirement, the thickness is preferably selected between 0. 01 micron - 0.2 micron.
  • the binder in the conductive adhesive layer is a thermoplastic resin such as polystyrene, vinyl acetate, polyester, polyethylene, polyamide, rubber acrylate, or phenolic or epoxy. , carbamate, melamine or alkyd thermosetting resin; conductive particles may be carbon, silver, nickel, copper particles, nickel gold, copper nickel, copper silver, nickel silver, nickel gold, silver coated glass or copper nickel gold.
  • the particle or carbon nanotube has a weight ratio of conductive particles to glue of 10% to 400%.
  • the thickness of the conductive adhesive layer is preferably 3um-2 (hM, weight ratio is 10 «/ ⁇ 1001 ⁇ 2.
  • the conductive particles are preferentially selected as silver-coated copper particles, nickel-coated copper particles, silver.
  • Particles, copper particles, nickel particles; adhesives are preferred to high temperature resistant epoxy resin or acrylic resin; pre-curing conditions are: temperature 80 ° C to 15 (TC, time 20 minutes - 1 minute
  • the protective film is made of a polyester protective film which is low in cost and can withstand a certain temperature, and can also be a polyester silicone protective film, and has a thickness of 25 micrometers to 125 micrometers.
  • a method for fabricating an extremely thin shielding film with extremely high shielding effectiveness comprising the following steps:
  • a conductive adhesive layer is formed on the outer surface of the outermost core shielding layer.
  • a method for fabricating an extremely thin shielding film with extremely high shielding effectiveness comprising the following steps:
  • the outer surface of the conductive adhesive layer forms a protective film as needed.
  • the structure of the shielding film formed above is identical in the above-described formation, but the process is different.
  • the material selected for the insulating film layer is PPS, PEN, polyester, polyimide film; or coated modified epoxy resin, polyurethane resin, modified acrylic resin, or polyimide resin; or
  • the insulating layer film is coated with different resins as needed; the insulating film layer has a thickness of 3-25 microns, preferably between 3 micrometers and 7 meters, to ensure sufficient flexibility and dielectric strength.
  • More than two layers of solid shielding layer directly have high electromagnetic shielding interface, which can achieve high-efficiency shielding of high-frequency and high-speed interference signals by multiple reflection and absorption of interference signals.
  • the solid shielding layer and the circuit board are electrically connected through the conductive adhesive to ensure that the electric charge formed by the interference signal can be grounded smoothly and achieve high-efficiency shielding.
  • the invention Compared with the prior art, the invention has the following advantages: Provides two layers or more of a very thin solid shielding layer, which can reflect and absorb the chirp interference signal multiple times, and simultaneously introduce excess charge into the ground layer to achieve extremely high shielding effectiveness. After testing, at a frequency exceeding 300MHz, the shielding performance can reach more than 6 MB; setting different shielding layers can achieve high peel strength and oxidation resistance, while the extremely thin shielding layer can provide good bending performance to meet electronic products. Light and thin demand.
  • FIG. 1 is a cross-sectional structural view of a very thin shielding film of the present invention
  • FIG. 2 is a cross-sectional structural view of a very thin shielding film of the present invention
  • FIG. FIG. 4 is a cross-sectional structural view of the extremely thin shielding film of the present invention
  • FIG. 4 is a schematic view showing the structure of the ultra-thin shielding film of the present invention
  • FIG. 6 is a schematic cross-sectional view showing the structure of the ultrathin shielding film of the present invention.
  • An extremely thin shielding film with high shielding effectiveness comprises two solid shielding layers: a first solid shielding layer 1 and a second solid shielding layer 2.
  • the first solid shielding layer 1 is formed on a surface of the second solid shielding layer 2.
  • An outer surface of the second solid shielding layer 2 is formed with a conductive adhesive layer 8
  • an outer surface of the first solid shielding layer 1 is formed with an insulating film layer 10 .
  • the upper surface of the insulating film 10 is covered with a carrier film layer 11,
  • the lower surface of the conductive adhesive layer 8 is covered with a protective film 9.
  • the carrier film layer 11 serves as a support for the insulating film layer 10, which is advantageous for subsequent processing.
  • the protective film 9 has a protective effect on the conductive adhesive layer 8, which is also advantageous for subsequent processing and can prevent external pollution.
  • the first solid shielding layer 1 and the second solid shielding layer 2 are grounded through the conductive adhesive layer 8.
  • a method for fabricating a very thin shielding film with high shielding effectiveness which comprises the following specific manufacturing steps:
  • the thickness of the insulating film layer 1 Q is 3-25 micrometers; the material selected for the insulating film layer 10 is PPS, PEN, polyester, polyimide film; or coating Epoxy resin, urethane resin, acrylic resin, or polyimide resin.
  • the thickness is preferably between 3 microns and 8 microns.
  • the material of the first solid shielding layer may be aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and a metal alloy containing any one or more of these materials, including but not limited to nickel-chromium alloy. , copper-nickel alloy, titanium-manganese alloy, nickel-chromium-based stainless steel and other materials; may also be ferrite and carbon nanotubes and other materials.
  • the thickness is between 0.1 ⁇ m and 0.5 ⁇ m.
  • the thickness is preferably selected between 0. 01 ⁇ m and 0.2 ⁇ m.
  • the material of the second solid shielding layer 2 may be aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and a metal alloy containing any one or more of these materials, including but not limited to nickel-chromium alloy. Materials such as copper-nickel alloy, titanium-manganese alloy, and nickel-chromium-based stainless steel; or materials such as ferrite and carbon nanotubes.
  • the thickness is between 0.01 ⁇ m and 3 ⁇ m.
  • the first solid shielding layer and the second solid shielding layer are different shielding materials.
  • the thickness of the second solid shielding layer is preferably selected to be between 0.1 and 1 micrometer.
  • the binder in the conductive adhesive layer is a thermoplastic resin such as polystyrene, vinyl acetate, polyester, polyethylene, polyamide, rubber acrylate, or phenolic or epoxy. , carbamate, melamine or alkyd thermosetting resin; conductive particles may be carbon, silver, nickel, copper particles, nickel gold, copper nickel, copper silver, nickel silver, nickel gold, silver coated glass or copper nickel gold Particle or carbon nanotube, conductive particle
  • the weight ratio to the glue is up to 400%. According to the actual requirements, the thickness of the conductive adhesive layer is preferably 5um-20um, and the weight ratio is 10%-100%.
  • the conductive particles are preferably selected from silver-coated copper particles, nickel-coated copper particles, silver particles, copper particles, and nickel particles; the binder is preferably selected to have high temperature resistant modified epoxy having thermal curing properties. Resin or modified acrylic resin; thickness from 3 ⁇ to 0 um, pre-cure conditions: temperature 80'C to 15 (TC, time 20 minutes - 1 minute.
  • the protective film 9 is made of a polyester protective film which is inexpensive and can withstand a certain temperature, and may also be a polyester silicone protective film. The thickness is 25 microns to 125 microns.
  • a very thin shielding film with high shielding effectiveness comprises three layers of solid shielding layers: a first solid shielding layer 1, a second solid shielding layer 1 and a third solid shielding layer 3.
  • the first solid shielding layer 1, the second solid shielding layer 2, and the third solid shielding layer 2 are sequentially formed layer by layer on the outer surface of the next layer.
  • the outer surface of the third solid shielding layer 3 is formed with a conductive adhesive layer 8, and the outer surface of the first solid shielding layer 1 is formed with an insulating film layer 1.
  • the upper surface of the insulating film 1 is covered with a carrier film layer 1, and the lower surface of the conductive adhesive layer 8 is covered with a protective film 9.
  • the carrier film layer 1 supports the insulating film layer 1 to facilitate subsequent processing; the protective film 9 has a protective effect on the conductive adhesive layer 8, which is also advantageous for subsequent processing and can prevent external pollution.
  • the first solid shielding layer 1, the second solid shielding layer 2 and the third solid shielding layer 2 are grounded by a conductive adhesive layer.
  • a method for fabricating a very thin shielding film with high shielding effectiveness which comprises the following specific manufacturing steps:
  • the thickness of the insulating film layer 10 is 3-25 ⁇ m; the material selected for the insulating film layer is PPS, PEN, polyester, polyimide film; or a coating ring Oxygen resin, urethane resin, acrylic resin, or polyimide resin.
  • the thickness is preferred between 3 ⁇ 8 ⁇ m.
  • the material of the first solid shielding layer may be aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel chromium. Alloy, copper-nickel alloy, titanium-manganese alloy, nickel-chromium-based stainless steel, etc.; or ferrite and carbon nanotubes.
  • the thickness is between 0.01 ⁇ m and 0.5 ⁇ m. It can be formed by electroless plating, D, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof. 1 ⁇ Between the thickness of 0.
  • the material of the second solid shielding layer 2 may be aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy. Materials such as copper-nickel alloy, titanium-manganese alloy, and nickel-chromium-based stainless steel; or materials such as ferrite and carbon nanotube.
  • the thickness is between 0.01 ⁇ m and 3 ⁇ m.
  • the first solid shielding layer and the second solid shielding layer are different shielding materials.
  • the thickness of the second solid shield layer is preferably between 0.01 ⁇ m and 0.5 ⁇ m.
  • the third solid shielding layer 3 material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and
  • the alloy metal layer containing any one or more of these materials includes, but is not limited to, a material such as a nickel-chromium alloy, a copper-nickel alloy, a titanium-manganese alloy, or a nickel-chromium-based stainless steel; or a material such as ferrite or carbon nanotube. It is between 0.1 ⁇ m and 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation, sputtering, electroplating or a composite process thereof.
  • the second solid shielding layer 2 and the third solid shielding layer 3 can be It is a different shielding material, the process of the two can be different.
  • the third solid shielding layer 3 can increase the shielding effectiveness, the thickness of which is preferably between 0.01 ⁇ m and 1 cm.
  • the binder in the conductive adhesive layer is a thermoplastic resin such as polystyrene, vinyl acetate, polyester, polyethylene, polyamide, rubber acrylate, or phenolic or epoxy. , carbamate, melamine or alkyd thermosetting resin; conductive particles may be carbon, silver, nickel, copper particles, nickel gold, copper nickel, copper silver, nickel silver, nickel gold, silver coated glass or copper nickel gold.
  • the particle or carbon nanotube has a weight ratio of conductive particles to glue of 10% to 400%. According to the actual requirements, the thickness of the conductive adhesive layer is preferably 5um-20um, and the weight ratio is 10°/.
  • conductive particles are preferentially selected from silver-coated copper particles, nickel-coated copper particles, silver particles, copper particles, and nickel particles; the binder is preferably selected to have high temperature-resistant modification with heat curing properties.
  • Epoxy resin or modified acrylic resin thickness 3um to 50um, pre-curing conditions: temperature 80 ° C to 15 (TC, time 20 minutes - 1 minute.
  • the protective film is made of a polyester protective film which is inexpensive and can withstand a certain temperature, and may also be a polyester silicone protective film.
  • the thickness is 25 microns to 125 microns.
  • a very thin shielding film with high shielding effectiveness comprising four layers of solid shielding layer: The solid shielding layer 1, the second solid shielding layer 2, the third solid shielding layer 3, and the fourth solid shielding layer 4 .
  • the first solid shielding layer 1, the second solid shielding layer 2 , the third solid shielding layer 3, and the fourth solid shielding layer 3 are sequentially formed on the outer surface of the next layer layer by layer.
  • An outer surface of the fourth solid shielding layer 4 is formed with a conductive adhesive layer 8
  • an outer surface of the first solid shielding layer 1 is formed with an insulating film layer 1 .
  • the upper surface of the insulating film 1 is covered with a carrier film layer 1, and the lower surface of the conductive paste layer 8 is covered with a protective film 9.
  • the carrier film layer 1 supports the insulating film layer 1 to facilitate subsequent processing; the protective film 9 has a protective effect on the conductive adhesive layer 8, which is also advantageous for subsequent processing, and can prevent external pollution.
  • the four-layer solid shielding layer is grounded through a conductive adhesive layer.
  • a method for fabricating a very thin shielding film with high shielding effectiveness which comprises the following specific manufacturing steps:
  • the thickness of the insulating film layer 10 is 3-25 micrometers; the material selected for the insulating film layer is PPS, PEN, polyester, polyimide film; or coating modification Epoxy resin, urethane resin, modified acrylic resin, or polyimide resin. The thickness is preferred between 3 microns and 8 microns.
  • a desired first solid shield layer 1 is formed on the insulating film layer.
  • the material of the first solid shielding layer 1 is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy. , copper-nickel alloy, titanium-manganese alloy, nickel-chromium-based stainless steel and other materials; may also be ferrite and carbon nanotubes and other materials.
  • the thickness is between 0.01 micrometers and "0. 5 micrometers.” It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof. Considering the bending requirement, the thickness is preferably selected between 0. 01 micron - 0. 2 cm.
  • the second solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy, copper nickel Alloy, titanium-manganese alloy, nickel-chromium-based stainless steel, etc.; may also be ferrite and carbon nanotubes.
  • the thickness is between 0. 01 microns - 3 between the meters. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof.
  • the first solid shield layer 1 and the second solid shield layer 2 are different shielding materials.
  • the second solid shielding layer 2 thickness is preferably selected between 0. 01 micron - 0. 5 micron.
  • the material of the third solid shielding layer 3 is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy, copper. Nickel alloy, titanium manganese alloy, Materials such as nickel-chromium stainless steel; materials such as ferrite and carbon nanotubes.
  • the thickness is between 0.01 ⁇ m and 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof.
  • the second solid shielding layer and the third solid shielding layer may be different shielding materials, and the processes of the two may be different.
  • the third solid shielding layer can increase the shielding effectiveness, and the thickness thereof is preferably between 0.01 ⁇ m and 1 ⁇ m.
  • the fourth solid shielding layer 4 material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy, copper Nickel alloy, titanium manganese alloy, nickel chrome stainless steel, etc.; may also be ferrite and carbon nanotubes.
  • the thickness is between 0.1 ⁇ m and 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof.
  • the fourth solid shielding layer and the third solid shielding layer may be different shielding materials, and the fourth solid shielding layer may improve shielding performance and improve oxidation resistance. Its thickness is preferably selected between 0. 01 micrometers "" 1 micron.
  • the binder in the conductive adhesive layer is a thermoplastic resin such as polystyrene, vinyl acetate, polyester, polyethylene, polyamide, rubber acrylate, or phenolic or epoxy. , carbamate, melamine or alkyd thermosetting resin; conductive particles may be carbon, silver, nickel, copper particles, nickel gold, copper nickel, copper silver, nickel silver, nickel gold, silver coated glass or copper nickel gold.
  • the particle or carbon nanotube has a weight ratio of conductive particles to glue of 10% to 400%. According to the actual requirements, the thickness of the conductive adhesive layer is preferably 5um-20um, and the weight ratio is 10%-100%.
  • the conductive particles are preferably selected from silver-coated copper particles, nickel-coated copper particles, silver particles, copper particles, and nickel particles; the binder is preferably selected to have high temperature resistant modified epoxy having thermal curing properties. Resin or modified acrylic resin; thickness from 3um to 0ura, pre-curing conditions: temperature 80 ° C to 150 ° C, time 20 minutes -1 minute.
  • the protective film is made of a polyester protective film which is inexpensive and can withstand a certain temperature, and may also be a polyester silicone protective film.
  • the thickness is 25 microns to 125 microns.
  • An extremely thin shielding film with high shielding effectiveness comprises two solid shielding layers: a first solid shielding layer 1 and a second solid shielding layer 2.
  • the second solid shielding layer 2 is formed on the surface of the first solid shielding layer 1.
  • the outer surface of the second solid shielding layer 2 is formed with a conductive adhesive layer 8, the first solid
  • An insulating film layer 10 is formed on the outer surface of the shield layer 1.
  • An insulating layer 12 is formed on the outer surface of the insulating film 10.
  • the upper surface of the insulating layer 12 is covered with a carrier film layer 1, and the lower surface of the conductive adhesive layer 8 is covered with a protective film 9.
  • the carrier film layer 1 supports the insulating film layer 1 and the insulating layer 2, which is advantageous for subsequent processing; the protective film 9 has a protective effect on the conductive adhesive layer 8, and is also advantageous for subsequent processing, and can prevent external pollution.
  • the two solid shielding layers are grounded through the conductive adhesive layer 8.
  • a method for fabricating an ultra-thin shielding film with high shielding effectiveness comprising the following steps: 1) forming a second insulating film layer 12 on the carrier film layer, and forming a first insulating layer on the second insulating film layer 12
  • the film layer 10, the second insulating film layer 12 and the first insulating film layer 10 have an overall thickness of 3 to 25 ⁇ m.
  • the material selected for the second insulating film layer 12 is PPS, PEN, polyester, polyimide film;
  • the first insulating film layer 101 Q is a coating modified epoxy resin, a polyurethane resin, a modified acrylic resin, Or a polyimide resin.
  • the second insulating film layer 12 and the first insulating film layer 10 may be sequentially interchanged as needed, that is, the carrier film may be the first insulating film layer 10 and then the second insulating film layer 12. It is not limited by the structure shown in the drawing.
  • the purpose of providing a plurality of insulating layers is to improve the tear resistance of the insulating laminate and achieve a higher step pressing requirement.
  • the total insulation thickness is preferably between 3 microns and 8 microns.
  • the first solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy. Materials such as copper-nickel alloy, titanium-manganese alloy, and nickel-chromium-based stainless steel; or materials such as ferrite and carbon nanotube.
  • the thickness is between 0.1 ⁇ m and 0.5 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof. Considering the bending requirement, the thickness is preferably selected between 0. 01 micron - 0. 2 between the meters.
  • the second solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy, copper nickel Alloy, titanium-manganese alloy, nickel-chromium-based stainless steel, etc.; may also be ferrite and carbon nanotubes.
  • the thickness is between 0.1 ⁇ m and 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof. Considering the shielding effectiveness, the first solid shielding layer and the second solid shielding layer are different shielding materials.
  • the thickness of the second solid shield layer is preferably between 0.1 ⁇ m and 1 ⁇ m.
  • the binder in the conductive adhesive layer is polystyrene, vinyl acetate, polyester, polyethylene, polyamide, rubber a thermoplastic resin such as acrylate, or a phenolic, epoxy, urethane, melamine or alkyd thermosetting resin; the conductive particles may be carbon, silver, nickel, copper particles, nickel gold, copper nickel, copper Silver, nickel silver, nickel gold, silver coated glass or copper nickel gold particles or carbon nanotubes, the weight ratio of conductive particles to the glue is 10% to 400 ° /. . According to the actual requirements, the thickness of the conductive adhesive layer is preferably 5um-20um, and the weight ratio is 10%-100%.
  • the conductive particles are preferentially selected from silver-coated copper particles, nickel-coated copper particles, silver particles, and copper particles.
  • the binder is preferentially selected to have high temperature resistant modified epoxy resin with thermal curing properties. Or modified acrylic resin; thickness is 3um to 50 ⁇ , pre-curing conditions are: temperature is 80'C to 150 °C, time is 20 minutes - 1 minute.
  • the protective film is made of a polyester protective film which is inexpensive and can withstand a certain temperature, and may also be a polyester silicone protective film. The thickness is 25 microns to 125 microns.
  • a very thin shielding film with high shielding effectiveness comprises three layers of solid shielding layers: a first solid shielding layer 1, a second solid shielding layer 2 and a third solid shielding layer 3.
  • the first solid shielding layer 1, the second solid shielding layer 2 and the third solid shielding layer 3 are formed layer by layer on the outer surface of the next layer.
  • the outer surface of the third solid shielding layer 3 is formed with a conductive adhesive layer 8
  • the outer surface of the first solid shielding layer 1 is formed with an insulating film layer 1G.
  • An insulating layer 12 is formed on the outer surface of the insulating film 10.
  • the upper surface of the insulating layer 12 is covered with a carrier film layer 11, and the lower surface of the conductive adhesive layer 8 is covered with a protective film 9.
  • the carrier film layer 11 supports the insulating film layer 1 and the insulating layer 2, which is advantageous for subsequent processing; and can prevent external pollution.
  • the three-layer solid shield is grounded through a conductive adhesive layer.
  • a method for fabricating a very thin shielding film with high shielding effectiveness which comprises the following specific manufacturing steps:
  • the second insulating film layer 12 is PPS, PEN, polyester, polyimide film;
  • the first insulating film layer 1 G10 is a coating modified epoxy resin, a polyurethane resin, a modified acrylic resin, Or a polyimide resin.
  • the second insulating film layer 12 and the first insulating film layer 10 may be sequentially interchanged as needed, that is, the carrier film may be the first insulating film layer 10 and then the second insulating film layer 12.
  • the purpose of providing a plurality of insulating layers is to improve the tear resistance of the insulating laminate and achieve a higher step pressing requirement.
  • the total insulation thickness is preferably between 3 microns and 8 microns.
  • the first solid shielding layer material is Aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and alloy metal layers containing any one or more of these materials, including but not limited to nickel-chromium alloys, copper-nickel alloys, titanium-manganese alloys, nickel Materials such as chrome stainless steel; materials such as ferrite and carbon nanotubes.
  • the thickness is 0. 01 micron - 0. 5 between the emblem. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof. 1 ⁇ Between the thickness of 0. 01 microns - 0. 2 microns.
  • the second solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy, copper nickel Alloy, titanium-manganese alloy, nickel-chromium-based stainless steel, etc.; may also be ferrite and carbon nanotubes.
  • the thickness is between 0.1 ⁇ m and 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof.
  • the first solid shielding layer and the second solid shielding layer are different shielding materials.
  • the second solid shield thickness is preferably selected between 0. 01 micron - [). 5 micron.
  • the third solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy, copper nickel Alloy, titanium-manganese alloy, nickel-chromium-based stainless steel, etc.; may also be ferrite and carbon nanotubes.
  • the thickness is between 0.1 ⁇ m and 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof.
  • the second solid shielding layer and the third solid shielding layer may be different shielding materials, and the processes of the two may be different.
  • the third solid shielding layer can increase the shielding effectiveness, and the thickness thereof is preferably selected between 0.01 ⁇ m and 1 ⁇ m.
  • the binder in the conductive adhesive layer is a thermoplastic resin such as polystyrene, vinyl acetate, polyester, polyethylene, polyamide, rubber acrylate, or phenolic or epoxy. , carbamate, melamine or alkyd thermosetting resin; conductive particles may be carbon, silver, nickel, copper particles, nickel gold, copper nickel, copper silver, nickel silver, nickel gold, silver coated glass or copper nickel gold.
  • the particle or carbon nanotube has a weight ratio of conductive particles to glue of 10% to 400%. According to actual requirements, the thickness of the conductive adhesive layer is preferably 5 to 20 um, and the weight ratio is 10% to 100%.
  • the conductive particles are preferably selected from silver-coated copper particles, nickel-coated copper particles, silver particles, copper particles, and nickel particles; the binder is preferably selected to have high temperature resistant modified epoxy having thermal curing properties. Resin or modified acrylic resin; thickness from 3nm to 5Cum, pre-cured The conditions are: temperature 80 ° C to 15 CTC, time 20 minutes -1 minute.
  • the protective film is made of a polyester protective film which is inexpensive and can withstand a certain temperature, and may also be a polyester silicone protective film. The thickness is 25 microns to 125 microns.
  • An extremely thin shielding film with high shielding effectiveness includes four solid shielding layers: a first solid shielding layer 1, a second solid shielding layer 2, a third solid shielding layer 3, and a fourth solid shielding layer 4.
  • the first solid shielding layer 1, the second solid shielding layer 2, the third solid shielding layer 3 and the fourth solid shielding layer 3 are formed layer by layer on the outer surface of the next layer.
  • An outer surface of the fourth solid shielding layer 4 is formed with a conductive adhesive layer 8, and an outer surface of the first solid shielding layer 1 is formed with an insulating film layer 2.
  • An insulating layer 1 is formed on the outer surface of the insulating film 1, and the upper surface of the insulating layer 1 is covered with a carrier film layer 1, and the lower surface of the conductive adhesive layer 8 is covered with a protective film 9.
  • the carrier film layer 1 supports the insulating film layer 1 and the insulating layer 2, which is advantageous for subsequent processing; and can prevent external pollution.
  • the four-layer solid shielding layer is grounded through a conductive adhesive layer.
  • a method for fabricating a very thin shielding film with high shielding effectiveness which comprises the following specific manufacturing steps:
  • the second insulating film layer 12 is PPS, PEN, polyester, polyimide film;
  • the first insulating film layer 1 010 is a coating modified epoxy resin, a polyurethane resin, a modified acrylic resin, Or a polyimide resin.
  • the second insulating film layer 12 and the first insulating film layer 10 may be sequentially interchanged as needed, that is, the carrier film may be the first insulating film layer 10 and then the second insulating film layer 12. It is not limited by the structure shown in the drawing.
  • the purpose of providing a plurality of insulating layers is to improve the tear resistance of the insulating laminate and achieve a higher step pressing requirement.
  • the total insulation thickness is preferred between 3 microns and -8 meters.
  • the first solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy. Materials such as copper-nickel alloy, titanium-manganese alloy, and nickel-chromium-based stainless steel; or materials such as ferrite and carbon nanotube.
  • the thickness is between 0.1 ⁇ m and 0.5 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof. Considering the bending requirement, the thickness is preferably selected between 0. 01 micron and 0. 2 micron.
  • the second solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and any one of these materials.
  • the above alloy metal layers include, but are not limited to, materials such as nickel-chromium alloy, copper-nickel alloy, titanium-manganese alloy, and nickel-chromium-based stainless steel; and may be materials such as ferrite and carbon nanotube.
  • the thickness is between 0.01 ⁇ m and 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation, sputtering, electroplating or a composite process thereof.
  • the first solid shielding layer and the second solid shielding layer are different shielding materials.
  • the thickness of the second solid shield layer is preferably between 0.01 ⁇ m and 0.5 ⁇ m.
  • the third solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy, copper nickel Alloy, titanium-manganese alloy, nickel-chromium-based stainless steel, etc.; may also be ferrite and carbon nanotubes.
  • the thickness is between 0.1 ⁇ m and _ 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof.
  • the second solid shielding layer and the third solid shielding layer may be different shielding materials, and the processes of the two may be different.
  • the third solid shielding layer can increase the shielding effectiveness, and the thickness thereof is preferably selected between 0.01 ⁇ m and 1 ⁇ m.
  • the fourth solid shielding layer material is aluminum, titanium, zinc, iron, nickel, chromium, cobalt, copper, silver, gold, and an alloy metal layer containing any one or more of these materials, including but not limited to nickel-chromium alloy, copper nickel Alloy, titanium-manganese alloy, nickel-chromium-based stainless steel, etc.; may also be ferrite and carbon nanotubes.
  • the thickness is between 0.1 ⁇ m and 3 ⁇ m. It can be formed by electroless plating, PVD, CVD, electron gun evaporation plating, sputtering plating, electroplating, or a composite process thereof.
  • the fourth solid shielding layer and the third solid shielding layer may be different shielding materials, and the fourth solid shielding layer may improve shielding effectiveness and improve oxidation resistance.
  • the thickness is preferably selected between 0.1 ⁇ m and 1 ⁇ m.
  • the binder in the conductive adhesive layer is a thermoplastic resin such as polystyrene, vinyl acetate, polyester, polyethylene, polyamide, rubber acrylate, or phenolic or epoxy. , carbamate, melamine or alkyd thermosetting resin; conductive particles may be carbon, silver, nickel, copper particles, nickel gold, copper nickel, copper silver, nickel silver, nickel gold, silver coated glass or copper nickel gold.
  • the particle or carbon nanotube has a weight ratio of conductive particles to glue of 10% to 4001 ⁇ 2. According to the actual requirements, the thickness of the conductive adhesive layer is preferably 5um - 2 0UII1, and the weight ratio is 10% - 1003 ⁇ 4.
  • the conductive particles are preferably selected from silver-coated copper particles, nickel-coated copper particles, silver particles, copper particles, and nickel particles; A modified epoxy resin or a modified acrylic resin having a heat curing property; a thickness of 3 um to 50 um, and a pre-curing condition: a temperature of 80 ° C to 150 ° C, and a time of 20 minutes - 1 minute.
  • the protective film is made of a polyester protective film which is inexpensive and can withstand a certain temperature, and may also be a polyester silicone protective film. The thickness is 25 microns to 125 microns.
  • a method for manufacturing a very thin shielding film with high shielding effectiveness the manufacturing steps are as follows:
  • the manufacturing process for the specific production of two or more solid shielding layers can be in accordance with the Chinese invention disclosed in the inventor's publication No. CN101486264 in 2009, and the patent name is "a peelable ultra-thin transfer carrier metal foil and a manufacturing method thereof". patent application.

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Abstract

本发明提供一种高屏蔽效能的极薄屏蔽膜,包括两层以上实心屏蔽层,所述实心屏蔽层一侧外表面涂覆有导电胶层,所述实心屏蔽层另外一侧外表面设置有一层以上的绝缘层;所述绝缘膜层外表面设置有载体膜层,所述导电胶层下表面覆盖保护膜。本发明还公开一种高屏蔽效能的极薄屏蔽膜的制作方法。本发明具有如下优点:提供了两层以上极薄的完整的实心屏蔽层,能够多次反射和吸收高频干扰信号,同时将多余电荷导入接地层,实现高屏蔽效能,经测试,在频率超过300MHz时,屏蔽效能能够达到60dB以上;同时极薄的实心屏蔽层能够提供很好的弯曲性能,满足电子产品的轻、薄需求。

Description

一种高屏蔽效能的极薄屏蔽膜及其制作方法 技术领域
本发明涉及挠性电路板以及刚挠电路板用的屏蔽膜领域, 具体为一种高屏 蔽效能的极薄屏蔽膜及其制作方法。
背景技术
随着电子产品轻、 薄、 短、 小的需求, 以及通讯系统的高频化及高速的驱 动下所引发的组件内部及外部的电磁干扰问题将逐渐严重, 电磁屏蔽成为必然。
目前, 主要的抗电磁干扰技术包括: 屏蔽技术、 接地技术和滤波技术。 对 于电路板, 包括挠性电路板、 硬板以及刚挠电路板, 实现抗电磁干扰主要从以 下几个方面考虑。 印刷导电银浆, 增加金属铜层或者贴合电磁屏蔽膜。 从挠曲 性和厚度方面考虑, 电磁屏蔽膜具有更好地操作和实用性能。 广泛应用于挠性 电路板和刚挠电路板中。
现有屏蔽膜主要分以下几种结构:
第一种结构如下:
公告号为 CN 101176388A , 名称为 《屏蔽膜、 屏蔽印刷电路板、 屏蔽柔性 印刷电路板、 屏蔽膜制造方法及屏蔽印刷电路板制造方法》 的中国发明专利公 开了一种屏蔽膜, 其是最外层硬层和次外层软层构成绝缘层, 在软层上形成一 层实心金属导体层, 然后在实心金属导体层上形成一层热固化的导电胶层, 由 于具有一层实心的金属屏蔽层, 该屏蔽膜具有较高的屏蔽效能。 但是随着频率 的增高, 特别是当频率超过 1GHz 后, 其屏蔽效能大大地降低, 不能满足 60dB 以上的屏蔽效能要求; 因此, 对于需要 60dB以上稳定屏蔽效能要求的产品, 很 多厂家还是选用印刷一定厚度的银浆实现。
公告号为 CN101448362B , 名称为 《可改变电路阻抗的极薄屏蔽膜、 电路板 及其制作方法》 的中国发明专利公开的产品结构是三层结构, 绝缘层是最外层、 然后是一层金属导体层、 最后在金属导体层上涂布一层热固化的导电胶层。 该 发明专利重点是通过改变金属导体层的网格尺寸, 实现最终的阻抗控制; 同时
1
确认本 兼具了屏蔽膜功能。 但其屏蔽效能与上述的屏蔽膜相当, 存在相同的不足。 且上述两个专利申请都是采用了一层金属导体层, 然后涂布导电胶的结构 实现屏蔽功能, 仅是一般意义上的屏蔽膜。
第二种结构如下:
公开号为 CN 1842245A , 名称为 《附有导电层的电子组件及导电胶膜与其 制造方法》 的中囯发明专利 公开的是由两层结抅组成。 最外层为金属导体层, 然后是导电胶层。 相对于第一种结构, 最外层没有绝缘层, 最外层能够直接与 金属相连接。 其屏蔽结抅是采用一层金属导体层, 然后涂布导电胶层。 屏蔽效 能与上述第一种结抅没有本质区别。
第三种结构如下:
公开号为 CN 101120627A , 名称为 《电磁波屏蔽性粘合薄膜、 其制备方法以 及被粘合物的电磁波屏蔽方法》 的中国发明专利公开的是由两层结构组成, 最 外层绝缘层, 然后是全方位的导电胶层。 相对于第一和第二种结构, 这种结构 没有实心的金属薄膜层结构。 能够实现更薄的要求, 耐弯折性能更好, 更廉价。 但是作为屏蔽膜, 最重要的指标是屏蔽效能, 由于缺少实心屏蔽金属导体层, 当传输频率超过 1GHz时, 其屏蔽效能不能到达 40dB。
第四种结构如下:
公开号为 CN 2626193Y , 名称为《具有高导热及电磁屏蔽功能的复合材料》 中国发明专利公开的是具有的两层屏蔽层, 但是电磁屏蔽层呈棋盘格状, 两屏 蔽层中间设置在一高导热层中而形成。 一方面, 其导热胶内包含有地导热粒子, 不能将屏蔽层中累计的电荷导入接地层实现稳定的高频信号屏蔽; 另外一方面, 金属导体层呈棋盘格状, 不是实心金属屏蔽层结构, 实现不了极高屏蔽效能。
第五种结构如下:
公告号为 CN 1819758A , 名称为 《电磁双重屏蔽膜》 的中国发明专利公开 了一种采用奥氏体的镍铬类不锈钢作为溅射靶材的电磁双重屏蔽膜, 是对于塑 料表面加工, 而且整体生产效率极低, 不能实现卷状的极薄屏蔽膜大规模生产。
第六种结构如下:
公告号为 CN 101521985A, 名称为 《屏蔽结构及具有该屏蔽结构的柔性印刷 电路板》的中国发明专利公开了一种屏蔽膜, 先采用涂布的方式形成一单面挠 性覆铜板结构, 然后在金属层上涂布导电胶而成, 其中金属铜层在 1-6微米之 间, 聚酰亚胺在 3- 10微米范围。 由于金属层厚度大于 1微米, 远高于目前市场 上的屏蔽金属层厚度, 硬度大幅度增加, 不利于柔韧性要求。 同时该结构金属 箔需要载体支撑而工艺复杂、 成本高昂, 无巿场竟争力。
第七种结构如下:
公告号为 CN 101772996A, 名称为 《印刷布线板用屏蔽膜以及印刷布线板》 的中国发明专利公开了一种屏蔽膜, 获得对于从大弯曲半径至变为小的弯曲半 径的反复弯曲及滑动, 金属层难以发生破坏的印刷布线板用屏蔽膜以及印刷布 线板。 该第一金属层是一种以上的鳞片状金属粒子形成的层, 第二金属层是具 有多个孔的多孔质层。 难以实现极高屏蔽效能。
上述几种种结构: 或者是一层完整金属导体层涂布导电胶结构; 或者是仅 有一层全方位的导电胶的结构; 或者是有两层网格金属导体层、 无实心金属导 体层且无接地设计的导热的结构设计。 或者不能满足 60dB以上的屏蔽效能、 或 者不能满足弯折性能、 或者不能满足剥离强度、 或者不能满足抗氧化性能、 或 者不能满足极薄卷状生产的规模化生产。
发明内容
本发明的目的是克服上述现有技术的不足, 提供一种抗干扰性能好, 且能 够提供良好的弯曲性能, 满足电子产品的轻、 薄需求的高屏蔽效能的极薄屏蔽 膜。
本发明的另一目的是提供一种高屏蔽效能的极薄屏蔽膜的制作方法。
本发明是这样实现的: 一种高屏蔽效能的极薄屏蔽膜, 其包括两层以上的 实心屏蔽层。
所述实心屏蔽层之间为在逐层表面上依次形成。
所述实心屏蔽层至少有两层由不同材料制成。
所述最外层实心屏蔽层一侧外表面形成有导电胶层, 所述最外层实心屏蔽 层一侧外表面形成有绝缘膜层。
所述绝缘膜层可以是各种绝缘薄膜层, 或者各种树脂层, 或者是绝缘层薄 膜上根据需要涂布不同树脂复合而成。
所述绝缘膜层外表面覆盖有载体膜层, 所述导电胶层外表面根据需要可以 形成有保护膜。
所述绝缘膜层为连接在一起的第一绝缘膜层和第二绝缘膜层组成, 其厚度 为 3-25微米。 其中所述第一绝缘膜层选用的材料是聚苯硫醚〔PPS )、 聚萘二甲 酸乙二醇酯 (PEN )、 聚酯或聚酰亚胺薄膜; 第二绝缘膜层是涂布的环氧树脂、 聚氨酯类树脂、 丙烯酸树脂或者聚酰亚胺树脂。
所述实心屏蔽层的材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银或金, 或 者是包含上述金属中任意一种以上的金属合金, 包括但不仅限于镍铬合金, 铜 镍合金、 钛锰合金、 镍铬类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米- 0. 5微米之间。 考虑弯折需求, 厚度优先选择 0. 01微米 -0. 2 微米之间。
所述导电胶层中的粘合剂是聚苯乙烯系、 乙酸乙烯酯类、 聚酯类、 聚乙烯 类、 聚酰胺类、 橡胶类丙烯酸酯类等热塑性树脂, 或者使用酚醛类、 环氧类、 氨基甲酸酯类、 三聚氰胺类或醇酸类热固性树脂; 导电粒子可以是碳、 银、 镍、 铜颗粒、 镍金、 铜镍、 铜银、 镍银、 镍金、 银包玻璃或者铜镍金颗粒或者碳纳 米管, 其导电粒子与胶的重量比为 10%到 400%。 根据实际要求, 优先选择导电 胶层厚度为 3um- 2(hM, 重量比为 10«/Γ100½。 从可靠性和成本两个方面考虑, 导 电粒子优先选择银包铜粒子、 镍包铜粒子、 银粒子、 铜粒子、 镍粒子; 粘合剂 优先选择耐高温的具有热固化性能的环氧树脂或者丙烯酸树脂; 予固化条件为: 温度为 80°C至 15 (TC , 时间为 20分钟- 1分钟。所述保护膜选用成本低廉且能耐 受一定温度的聚酯保护膜,也可以是聚酯硅胶保护膜。厚度 25微米到 125微米。
一种极高屏蔽效能的极薄屏蔽膜的制作方法, 包括以下制作步骤:
1 )在载体膜层上形成绝缘膜层;
2 )在绝缘膜层上形成第一实心屏蔽层;
3 )在第一实心屏蔽层上表面形成至少一层实心屏蔽层;
4 )在最外层心屏蔽层的外表面形成有导电胶层。
以上操作步骤可以依顺序形成, 也可以是如下第二制作步骤:
一种极高屏蔽效能的极薄屏蔽膜的制作方法, 包括以下制作步骤:
1 )根据需要形成可剥离的两层以上的实心屏蔽层;
2 )在所述实心屏蔽层一侧外表面形成绝缘膜层; 3 )在所述实心屏蔽层另一侧外表面形成需要的导电胶层。
所述导电胶层外表面根据需要形成保护膜。
以上形成的屏蔽膜结构以上述形成的一致, 但工艺不同。
其中, 绝缘膜层选用的材料是 PPS、 PEN, 聚酯、 聚酰亚胺薄膜; 或者是涂 布改性环氧树脂、 聚氨酯类树脂、 改性丙烯酸树脂、 或者聚酰亚胺树脂; 或者 是绝缘层薄膜上根据需要涂布不同树脂复合而成;所述绝缘膜层厚度 3— 25微米, 优先选择 3微米- 7徽米之间,保证足够的柔韧性和介电强度。 两层以上的实心 屏蔽层直接因为具有不同的电磁屏蔽界面, 可以通过对干扰信号的多次反射和 吸收, 实现对高频和高速干扰信号的高效屏蔽。 实心屏蔽层与线路板经过导电 胶的电气连接, 保证干扰信号形成的电荷能够顺利接地, 实现高效屏蔽。
与现有的技术相比, 本发明具有如下优点: 提供了两层以上极薄的实心屏 蔽层, 能够多次反射和吸收髙频干扰信号, 同时将多余电荷导入接地层, 实现 极高屏蔽效能, 经测试, 在频率超过 300MHz时, 屏蔽效能能够达到 6 MB以上; 设置不同的屏蔽层可以实现高剥离强度、 抗氧化性能, 同时极薄的屏蔽层能够 提供很好的弯曲性能, 满足电子产品的轻、 薄需求。
附图说明
图 1为本发明高屏蔽效能的极薄屏蔽膜实施例 1的剖面图结构示意图; 图 2为本发明高屏蔽效能的极薄屏蔽膜实施例 2的剖面图结构示意图; 图 3为本发明高屏蔽效能的极薄屏蔽膜实施例 3的剖面图结构示意图; 图 4为本发明高屏蔽效能的极薄屏蔽膜实施例 4的剖面图结构示意图; 图 5为本发明高屏蔽效能的极薄屏蔽膜实施例 5的剖面图结构示意图; 图 6为本发明高屏蔽效能的极薄屏蔽膜实施例 6的剖面图结构示意图。 具体实施方式
以下结合附图和具体实施例对本发明进行详细的说明。
实施例 1
一种高屏蔽效能的极薄屏蔽膜, 如图 1所示, 包括两层实心屏蔽层:第一实 心屏蔽层 1和第二实心屏蔽层 2。所述第一实心屏蔽层 1形成在所述第二实心屏 蔽层 2表面上。 所述第二实心屏蔽层 2外表面形成有导电胶层 8 , 所述第一实心 屏蔽层 1外表面形成有绝缘膜层 10。 绝缘层膜 1 0上表面覆盖有载体膜层 11 , 所述导电胶层 8下表面覆盖保护膜 9。载体膜层 11对绝缘膜层 10起到支撑作用, 有利于后续加工。 保护膜 9对导电胶层 8有保护作用, 也有利于后续加工, 并 可以防止外界污染。 其中, 所述第一实心屏蔽层 1和第二实心屏蔽层 2通过导 电胶层 8实现接地。
一种高屏蔽效能的极薄屏蔽膜的制作方法, 其包括的具体制作步骤如下:
1 ) 在载体膜层 11上形成绝缘膜层 10, 绝缘膜层 1 Q厚度 3-25微米; 绝缘 膜层 10选用的材料是 PPS、 PEN, 聚酯、 聚酰亚胺薄膜; 或者是涂布环氧树脂、 聚氨酯类树脂、 丙烯酸树脂、 或者聚酰亚胺树脂。 厚度优先选择 3微米 -8微米 之间。
2 )在绝缘膜层上形成需要的第一实心屏蔽层。 所述第一实心屏蔽层的材料 可以是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一 种以上的金属合金, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类 不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 其厚度为 0. 01微米- 0. 5 微米之间。 可以采用化学镀方式、 物理气相沉积 (PVD )、 化学气相沉积 (CVD )、 电子枪蒸发镀、 溅射镀、 电镀或者其复合工艺形成。 考虑弯折需求, 厚度优先 选择 0. 01微米- 0. 2微米之间。
3 ) 在所述第一实心屏蔽层 1上形成所需要的第二实心屏蔽层 2。 第二实心 屏蔽层 2 的材料可以是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这 些材料中任意一种以上的金属合金, 包括但不仅限于镍铬合金, 铜镍合金、 钛 锰合金、镍铬类不锈钢等材质;也可以是铁氧体和碳纳米管等材质。厚度为 0. 01 微米— 3微米之间。 可以采用化学镀方式、 物理气相沉积(PVD )、 化学气相沉积
( CVD )、 电子枪蒸发镀、 溅射镀、 电镀或者其复合工艺形成。 考虑屏蔽效能, 第一实心屏蔽层和第二实心屏蔽层为不同的屏蔽材料。 所述第二实心屏蔽层厚 度优先选择 0. 01徽米 -1微米之间。
4 )在第二实心屏蔽层 2外表面上涂布导电胶层, 予固化。 所述导电胶层中 的粘合剂是聚苯乙烯系、 乙酸乙烯酯类、 聚酯类、 聚乙烯类、 聚酰胺类、 橡胶 类丙烯酸酯类等热塑性树脂, 或者使用酚醛类、 环氧类、 氨基甲酸酯类、 三聚 氰胺类或醇酸类热固性树脂; 导电粒子可以是碳、 银、 镍、 铜颗粒、 镍金、 铜 镍、 铜银、 镍银、 镍金、 银包玻璃或者铜镍金颗粒或者碳纳米管, 其导电粒子 与胶的重量比为 到 400%。 根据实际要求, 优先选择导电胶层厚度为 5um-20um, 重量比为 10%-100%。 从可靠性和成本两个方面考虑, 导电粒子优先 选择银包铜粒子、 镍包铜粒子、 银粒子、 铜粒子、 镍粒子; 粘合剂优先选择耐 高温的具有热固化性能的改性环氧树脂或者改性丙烯酸树脂; 厚度为 3ικη 至 0um, 予固化条件为: 温度为 80 'C至 15 (TC, 时间为 20分钟- 1分钟。
5 ) 在导电胶层 8覆盖可离形的保护膜 9。 所述保护膜 9选用成本低廉且能 耐受一定温度的聚酯保护膜, 也可以是聚酯硅胶保护膜。 厚度 25微米到 125微 米。
实施例 2
一种高屏蔽效能的极薄屏蔽膜, 如图 2 所示, 包括三层实心屏蔽层: 第一 实心屏蔽层 1、 第二实心屏蔽层 1和第三实心屏蔽层 3。所述第一实心屏蔽层 1、 第二实心屏蔽层 2和第三实心屏蔽层 2逐层依次在下一层的外表面上形成。 所 述第三实心屏蔽层 3外表面形成有导电胶层 8 ,所述第一实心屏蔽层 1外表面形 成有绝缘膜层 1。 绝缘层膜 1上表面覆盖有载体膜层 1 , 所述导电胶层 8下表面 覆盖保护膜 9。 载体膜层 1对绝缘膜层 1起到支撑作用, 有利于后续加工; 保护 膜 9对导电胶层 8有保护作用, 也有利于后续加工, 并可以防止外界污染。 所 述第一实心屏蔽层 1、第二实心屏蔽层 2和第三实心屏蔽层 2通过导电胶层实现 接地。
一种高屏蔽效能的极薄屏蔽膜的制作方法, 其包括的具体制作步骤如下:
1 ) 在载体膜层 11上形成绝缘膜层 1 0, 绝缘膜层 10厚度 3- 25微米; 绝缘 膜层选用的材料是 PPS、 PEN, 聚酯、 聚酰亚胺薄膜; 或者是涂布环氧树脂、 聚 氨酯类树脂、 丙烯酸树脂、 或者聚酰亚胺树脂。 厚度优先选择 3徼米 _8微米之 间。
2 ) 在绝缘膜层 10上形成需要的第一实心屏蔽层。 所述第一实心屏蔽层的 材料可以是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任 意一种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类不锈铜等材质;也可以是铁氧体和碳纳米管等材质。厚度为 0. 01微米- 0. 5 微米之间。 可以采用化学镀方式、 D、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或 者其复合工艺形成。 考虑弯折需求, 厚度优先选择 0. 01微米 - 0. 2微米之间。 3 )在所述第一实心屏蔽层 1上形成需要的第二实心屏蔽层 2。 第二实心屏 蔽层 2材料可以是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材 料中任意一种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰 合金、 镍铬类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01 微米— 3微米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或者其复合工艺形成。 第一实心屏蔽层和第二实心屏蔽层为不同的屏蔽材 料。 第二实心屏蔽层厚度优先选择 0. 01微米 - 0. 5微米之间。
4 )在所述第二实心屏蔽层 2上形成需要的第三实心屏蔽层 3„ 第三实心屏 蔽层 3材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中 任意一种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米- 3 微米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或 者其复合工艺形成。 第二实心屏蔽层 2和第三实心屏蔽层 3可以是不同的屏蔽 材料, 两者的工艺可以不同。 第三实心屏蔽层 3 可以增加屏蔽效能, 其厚度优 先选择 0. 01微米一 1徼米之间。
5 )在第三实心屏蔽层 3外表面上涂布导电胶层 8 , 予固化。 所述导电胶层 中的粘合剂是聚苯乙烯系、 乙酸乙烯酯类、 聚酯类、 聚乙烯类、 聚酰胺类、 橡 胶类丙烯酸酯类等热塑性树脂, 或者使用酚醛类、 环氧类、 氨基甲酸酯类、 三 聚氰胺类或醇酸类热固性树脂; 导电粒子可以是碳、 银、 镍、 铜颗粒、 镍金、 铜镍、 铜银、 镍银、 镍金、 银包玻璃或者铜镍金颗粒或者碳纳米管, 其导电粒 子与胶的重量比为 10%到 400%。 根据实际要求, 优先选择导电胶层厚度为 5um-20um, 重量比为 10°/。- 100 从可靠性和成本两个方面考虑, 导电粒子优先 选择银包铜粒子、 镍包铜粒子、 银粒子、 铜粒子、 镍粒子; 粘合剂优先选择耐 高温的具有热固化性能的改性环氧树脂或者改性丙烯酸树脂; 厚度为 3um 至 50um, 予固化条件为: 温度为 80°C至 15(TC , 时间为 20分钟- 1分钟。
6 )在导电胶层覆盖可离形的保护膜。 所述保护膜选用成本低廉且能耐受一 定温度的聚酯保护膜, 也可以是聚酯硅胶保护膜。 厚度 25微米到 125微米。
实施例 3
一种高屏蔽效能的极薄屏蔽膜, 如图 3所示, 包括四层实心屏蔽层: 第一 实心屏蔽层 1、 第二实心屏蔽层 2、 第三实心屏蔽层 3和第四实心屏蔽层 4。 所 述第一实心屏蔽层 1、 第二实心屏蔽层 2、 第三实心屏蔽层 3和第四实心屏蔽层 3为逐层依次在下一层的外表面上形成。所述第四实心屏蔽层 4外表面形成有导 电胶层 8 , 所述第一实心屏蔽层 1外表面形成有绝缘膜层 1。 绝缘层膜 1上表面 覆盖有载体膜层 1, 所述导电胶层 8下表面覆盖保护膜 9。 载体膜层 1对绝缘膜 层 1起到支撑作用, 有利于后续加工; 保护膜 9对导电胶层 8有保护作用, 也 有利于后续加工, 并可以防止外界污染。 四层实心屏蔽层通过导电胶层实现接 地。
一种高屏蔽效能的极薄屏蔽膜的制作方法, 其包括的具体制作步骤如下:
1 )在载体膜层 11上形成绝缘膜层 1 0, 绝缘膜层 10厚度 3-25微米; 绝缘 膜层选用的材料是 PPS、 PEN, 聚酯、 聚酰亚胺薄膜; 或者是涂布改性环氧树脂、 聚氨酯类树脂、 改性丙烯酸树脂、 或者聚酰亚胺树脂。 厚度优先选择 3微米- 8 微米之间。
2 )在绝缘膜层上形成需要的第一实心屏蔽层 1。 所述第一实心屏蔽层 1材 料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一种 以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类 不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米" "0. 5微米 之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或者其 复合工艺形成。 考虑弯折需求, 厚度优先选择 0. 01微米 -0. 2徼米之间。
3 )在所述第一实心屏蔽层 1上形成需要的第二实心屏蔽层 2。 第二实心屏 蔽层材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任 意一种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米 - 3 徽米之间。 可以采用化学镀方式、 PVD、 CVD, 电子枪蒸发镀、 溅射镀、 电镀或 者其复合工艺形成。 第一实心屏蔽层 1和第二实心屏蔽层 2为不同的屏蔽材料。 第二实心屏蔽层 2厚度优先选择 0. 01微米 - 0. 5微米之间。
4 )在所述第二实心屏蔽层 2上形成需要的第三实心屏蔽层 3。 第三实心屏 蔽层 3材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中 任意一种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米- 3微米之间。 可以采用化学镀方式、 PVD、 CVD, 电子枪蒸发镀、 溅射镀、 电镀或 者其复合工艺形成。 第二实心屏蔽层和第三实心屏蔽层可以是不同的屏蔽材料, 两者的工艺可以不同。第三实心屏蔽层可以增加屏蔽效能,其厚度优先选择 0. 01 微米— 1微米之间。
5 )在所述第三实心屏蔽层 3上形成需要的第四实心屏蔽层 4。 第四实心屏 蔽层 4材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中 任意一种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米- 3微米之间。 可以采用化学镀方式、 PVD、 CVD, 电子枪蒸发镀、 溅射镀、 电镀或 者其复合工艺形成。 第四实心屏蔽层和第三实心屏蔽层可以是不同的屏蔽材料, 第四实心屏蔽层可以提高屏蔽效能、 提高抗氧化性能。 其厚度优先选择 0. 01微 米"" 1微米之间。
6 )在第四实心屏蔽层 4外表面上涂布导电胶层, 予固化。 所述导电胶层中 的粘合剂是聚苯乙烯系、 乙酸乙烯酯类、 聚酯类、 聚乙烯类、 聚酰胺类、 橡胶 类丙烯酸酯类等热塑性树脂, 或者使用酚醛类、 环氧类、 氨基甲酸酯类、 三聚 氰胺类或醇酸类热固性树脂; 导电粒子可以是碳、 银、 镍、 铜颗粒、 镍金、 铜 镍、 铜银、 镍银、 镍金、 银包玻璃或者铜镍金颗粒或者碳纳米管, 其导电粒子 与胶的重量比为 10%到 400%。 根据实际要求, 优先选择导电胶层厚度为 5um-20um, 重量比为 10%- 100%。 从可靠性和成本两个方面考虑, 导电粒子优先 选择银包铜粒子、 镍包铜粒子、 银粒子、 铜粒子、 镍粒子; 粘合剂优先选择耐 高温的具有热固化性能的改性环氧树脂或者改性丙烯酸树脂; 厚度为 3um 至 0ura, 予固化条件为: 温度为 80 °C至 150 °C , 时间为 20分钟 -1分钟。
6 )在导电胶层覆盖可离形的保护膜。 所述保护膜选用成本低廉且能耐受一 定温度的聚酯保护膜, 也可以是聚酯硅胶保护膜。 厚度 25微米到 125微米。
实施例 4
一种高屏蔽效能的极薄屏蔽膜, 如图 4所示, 包括两层实心屏蔽层: 第一 实心屏蔽层 1和第二实心屏蔽层 2。所述第二实心屏蔽层 2为在第一实心屏蔽层 1表面上形成。 所述第二实心屏蔽层 2外表面形成有导电胶层 8 , 所述第一实心 屏蔽层 1外表面形成有绝缘膜层 10。 绝缘层膜 10外面形成有绝缘层 12 , 绝缘 层 12上表面覆盖有载体膜层 1 , 所述导电胶层 8下表面覆盖保护膜 9。 载体膜 层 1对绝缘膜层 1和绝缘层 2起到支撑作用, 有利于后续加工; 保护膜 9对导 电胶层 8 有保护作用, 也有利于后续加工, 并可以防止外界污染。 两实心屏蔽 层通过导电胶层 8实现接地。
一种高屏蔽效能的极薄屏蔽膜的制作方法, 其包括的具体制作步骤如下: 1 )在载体膜层上形成第二绝缘膜层 12 , 所述第二绝缘膜层 12上形成第一 绝缘膜层 10,所述第二绝缘膜层 12和第一绝缘膜层 10整体厚度 3-25微米。所 述第二绝缘膜层 12选用的材料是 PPS、 PEN, 聚酯、 聚酰亚胺薄膜; 第一绝缘膜 层 101 Q是涂布改性环氧树脂、 聚氨酯类树脂、 改性丙烯酸树脂、 或者聚酰亚胺 树脂而成。 所述第二绝缘膜层 12和第一绝缘膜层 10根据需要可以顺序互换, 即靠近载体膜可以是第一绝缘膜层 10, 然后是第二绝缘膜层 12。 不受附图所示 结构所限制。 设置多层绝缘层目的是提高绝缘层压合时耐撕裂能力, 实现更高 台阶压合需求。 总绝缘层厚度优先选择 3微米 -8微米之间。
2 )在绝缘膜层上形成需要的第一实心屏蔽层。 所述第一实心屏蔽层材料是 铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一种以上 的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类不锈 钢等材质;也可以是铁氧体和碳纳米管等材质。厚度为 0. 01微米 -0. 5微米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或者其复合工 艺形成。 考虑弯折需求, 厚度优先选择 0. 01微米- 0. 2徽米之间。
3 )在所述第一实心屏蔽层上形成需要的第二实心屏蔽层。 第二实心屏蔽层 材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一 种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬 类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米- 3微 米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或者 其复合工艺形成。 考虑屏蔽效能, 第一实心屏蔽层和第二实心屏蔽层为不同的 屏蔽材料。 第二实心屏蔽层厚度优先选择 0. 01微米- 1微米之间。
4 )在第二实心屏蔽层外表面上涂布导电胶层, 予固化。 所述导电胶层中的 粘合剂是聚苯乙烯系、 乙酸乙烯酯类、 聚酯类、 聚乙烯类、 聚酰胺类、 橡胶类 丙烯酸酯类等热塑性树脂, 或者使用酚醛类、 环氧类、 氨基甲酸酯类、 三聚氰 胺类或醇酸类热固性树脂; 导电粒子可以是碳、 银、 镍、 铜颗粒、 镍金、 铜镍、 铜银、 镍银、 镍金、 银包玻璃或者铜镍金颗粒或者碳纳米管, 其导电粒子与胶 的重量比为 10%到 400°/。。 根据实际要求, 优先选择导电胶层厚度为 5um-20um, 重量比为 10%- 100%。 从可靠性和成本两个方面考虑, 导电粒子优先选择银包铜 粒子、 镍包铜粒子、 银粒子、 铜粒子 镍粒子; 粘合剂优先选择耐高温的具有 热固化性能的改性环氧树脂或者改性丙烯酸树脂; 厚度为 3um至 50ιπη, 予固化 条件为: 温度为 80'C至 150 °C , 时间为 20分钟- 1分钟。
5 )在导电胶层覆盖可离形的保护膜。 所述保护膜选用成本低廉且能耐受一 定温度的聚酯保护膜, 也可以是聚酯硅胶保护膜。 厚度 25微米到 125微米。 实施例 5
一种高屏蔽效能的极薄屏蔽膜, 如图 5 所示, 包括三层实心屏蔽层: 第一 实心屏蔽层 1、 第二实心屏蔽层 2和第三实心屏蔽层 3。所述第一实心屏蔽层 1、 第二实心屏蔽层 2和第三实心屏蔽层 3为逐层依次在下一层的外表面上形成。 所述第三实心屏蔽层 3外表面形成有导电胶层 8,所述第一实心屏蔽层 1外表面 形成有绝缘膜层 1 G。 绝缘层膜 10外面形成有绝缘层 12 , 绝缘层 12上表面覆盖 有载体膜层 11, 所述导电胶层 8下表面覆盖保护膜 9。 载体膜层 11对绝缘膜层 1和绝缘层 2起到支撑作用, 有利于后续加工; 并可以防止外界污染。 三层实心 屏蔽层通过导电胶层实现接地。
一种高屏蔽效能的极薄屏蔽膜的制作方法, 其包括的具体制作步骤如下:
1 ) 在载体膜层上形成第二绝缘膜层 12, 所述第二绝缘膜层 12上形成第一 绝缘膜层 10, 所述第二绝缘膜层 12和第一绝缘膜层 10整体厚度 3-25微米。所 述第二绝缘膜层 12选用的材料是 PPS、 PEN, 聚酯、 聚酰亚胺薄膜; 第一绝缘膜 层 1 G10是涂布改性环氧树脂、 聚氨酯类树脂、 改性丙烯酸树脂、 或者聚酰亚胺 树脂而成。 所述第二绝缘膜层 12和第一绝缘膜层 10根据需要可以顺序互换, 即靠近载体膜可以是第一绝缘膜层 10, 然后是第二绝缘膜层 12。 不受附图所示 结构所限制。 设置多层绝缘层目的是提高绝缘层压合时耐撕裂能力, 实现更高 台阶压合需求。 总绝缘层厚度优先选择 3微米- 8微米之间。
2 )在绝缘膜层上形成需要的第一实心屏蔽层。 所述第一实心屏蔽层材料是 铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一种以上 的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类不锈 钢等材质;也可以是铁氧体和碳纳米管等材质。厚度为 0. 01微米- 0. 5徽米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发鍍、 溅射镀、 电镀或者其复合工 艺形成。 考虑弯折需求, 厚度优先选择 0. 01微米- 0. 2微米之间。
3 )在所述第一实心屏蔽层上形成需要的第二实心屏蔽层。 第二实心屏蔽层 材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一 种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬 类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米- 3微 米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或者 其复合工艺形成。 第一实心屏蔽层和第二实心屏蔽层为不同的屏蔽材料。 第二 实心屏蔽层厚度优先选择 0. 01微米 - [). 5微米之间。
4 )在所述第二实心屏蔽层上形成需要的第三实心屏蔽层。 第三实心屏蔽层 材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一 种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬 类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米- 3微 米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或者 其复合工艺形成。 第二实心屏蔽层和第三实心屏蔽层可以是不同的屏蔽材料, 两者的工艺可以不同。第三实心屏蔽层可以增加屏蔽效能,其厚度优先选择 0. 01 微米 -1微米之间。
5 )在第三实心屏蔽层外表面上涂布导电胶层, 予固化。 所述导电胶层中的 粘合剂是聚苯乙烯系、 乙酸乙烯酯类、 聚酯类、 聚乙烯类、 聚酰胺类、 橡胶类 丙烯酸酯类等热塑性树脂, 或者使用酚醛类、 环氧类、 氨基甲酸酯类、 三聚氰 胺类或醇酸类热固性树脂; 导电粒子可以是碳、 银、 镍、 铜顆粒、 镍金、 铜镍、 铜银、 镍银、 镍金、 银包玻璃或者铜镍金颗粒或者碳纳米管, 其导电粒子与胶 的重量比为 10%到 400%。 根据实际要求, 优先选择导电胶层厚度为 5而- 20um, 重量比为 10%-100%。 从可靠性和成本两个方面考虑, 导电粒子优先选择银包铜 粒子、 镍包铜粒子、 银粒子、 铜粒子、 镍粒子; 粘合剂优先选择耐高温的具有 热固化性能的改性环氧树脂或者改性丙烯酸树脂; 厚度为 3nm至 5Cum, 予固化 条件为: 温度为 80 °C至 15 CTC , 时间为 20分钟 -1分钟。
6 )在导电胶层覆盖可离形的保护膜。 所述保护膜选用成本低廉且能耐受一 定温度的聚酯保护膜, 也可以是聚酯硅胶保护膜。 厚度 25微米到 125微米。 实施例 6
一种高屏蔽效能的极薄屏蔽膜, 如图 6所示, 包括四层实心屏蔽层: 第一 实心屏蔽层 1、 第二实心屏蔽层 2、 第三实心屏蔽层 3和第四实心屏蔽层 4。 所 述第一实心屏蔽层 1、 第二实心屏蔽层 2、 第三实心屏蔽层 3和第四实心屏蔽层 3为逐层依次在下一层的外表面上形成。所述第四实心屏蔽层 4外表面形成有导 电胶层 8, 所述第一实心屏蔽层 1外表面形成有绝缘膜层 2。 绝缘层膜 1外面形 成有绝缘层 1 , 绝缘层 1上表面覆盖有载体膜层 1, 所述导电胶层 8下表面覆盖 保护膜 9。载体膜层 1对绝缘膜层 1和绝缘层 2起到支撑作用,有利于后续加工; 并可以防止外界污染。 四层实心屏蔽层通过导电胶层实现接地。
一种高屏蔽效能的极薄屏蔽膜的制作方法, 其包括的具体制作步骤如下:
1 )在载体膜层上形成第二绝缘膜层 12, 所述第二绝缘膜层 12上形成第一 绝缘膜层 10,所述第二绝缘膜层 12和第一绝缘膜层 10整体厚度 3-25微米。所 述第二绝缘膜层 12选用的材料是 PPS、 PEN , 聚酯、 聚酰亚胺薄膜; 第一绝缘膜 层 1 010是涂布改性环氧树脂、 聚氨酯类树脂、 改性丙烯酸树脂、 或者聚酰亚胺 树脂而成。 所述第二绝缘膜层 12和第一绝缘膜层 10根据需要可以顺序互换, 即靠近载体膜可以是第一绝缘膜层 1 0, 然后是第二绝缘膜层 12。 不受附图所示 结构所限制。 设置多层绝缘层目的是提高绝缘层压合时耐撕裂能力, 实现更高 台阶压合需求。 总绝缘层厚度优先选择 3微米 -8徽米之间。
2 )在绝缘膜层上形成需要的第一实心屏蔽层。 所述第一实心屏蔽层材料是 铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一种以上 的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬类不锈 钢等材质;也可以是铁氧体和碳纳米管等材质。厚度为 0. 01微米- 0. 5微米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电鍍或者其复合工 艺形成。 考虑弯折需求, 厚度优先选择 0. 01微米- 0. 2微米之间。
3 )在所述第一实心屏蔽层上形成需要的第二实心屏蔽层。 第二实心屏蔽层 材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一 种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬 类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米 -3微米 之间。 可以釆用化学镀方式、 PVD、 CVD, 电子枪蒸发镀、 溅射镀、 电镀或者其 复合工艺形成。 第一实心屏蔽层和第二实心屏蔽层为不同的屏蔽材料。 第二实 心屏蔽层厚度优先选择 0. 01微米- 0. 5微米之间。
4 )在所述第二实心屏蔽层上形成需要的第三实心屏蔽层。 第三实心屏蔽层 材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一 种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬 类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米 _ 3微 米之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或者 其复合工艺形成。 第二实心屏蔽层和第三实心屏蔽层可以是不同的屏蔽材料, 两者的工艺可以不同。第三实心屏蔽层可以增加屏蔽效能,其厚度优先选择 0. 01 微米 -1微米之间。
5 )在所述第三实心屏蔽层上形成需要的第四实心屏蔽层。 第四实心屏蔽层 材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银、 金以及包含这些材料中任意一 种以上的合金金属层, 包括但不仅限于镍铬合金, 铜镍合金、 钛锰合金、 镍铬 类不锈钢等材质; 也可以是铁氧体和碳纳米管等材质。 厚度为 0. 01微米- 3微米 之间。 可以采用化学镀方式、 PVD、 CVD、 电子枪蒸发镀、 溅射镀、 电镀或者其 复合工艺形成。 第四实心屏蔽层和第三实心屏蔽层可以是不同的屏蔽材料, 第 四实心屏蔽层可以提高屏蔽效能、 提高抗氧化性能。 其厚度优先选择 0. 01微米 -1微米之间。
6 )在第四实心屏蔽层外表面上涂布导电胶层, 予固化。 所述导电胶层中的 粘合剂是聚苯乙烯系、 乙酸乙烯酯类、 聚酯类、 聚乙烯类、 聚酰胺类、 橡胶类 丙烯酸酯类等热塑性树脂, 或者使用酚醛类、 环氧类、 氨基甲酸酯类、 三聚氰 胺类或醇酸类热固性树脂; 导电粒子可以是碳、 银、 镍、 铜颗粒、 镍金、 铜镍、 铜银、 镍银、 镍金、 银包玻璃或者铜镍金颗粒或者碳纳米管, 其导电粒子与胶 的重量比为 10%到 400½。 根据实际要求, 优先选择导电胶层厚度为 5um- 2 0UII1 , 重量比为 10%-100¾。 从可靠性和成本两个方面考虑, 导电粒子优先选择银包铜 粒子、 镍包铜粒子、 银粒子、 铜粒子、 镍粒子; 粘合剂优先选择耐高温的具有 热固化性能的改性环氧树脂或者改性丙烯酸树脂; 厚度为 3um至 50um, 予固化 条件为: 温度为 80'C至 150°C, 时间为 20分钟- 1分钟。
6)在导电胶层覆益可离形的保护膜。 所述保护膜选用成本低廉且能耐受一 定温度的聚酯保护膜, 也可以是聚酯硅胶保护膜。 厚度 25微米到 125微米。 实施例 7
一种高屏蔽效能的极薄屏蔽膜的制作方法, 其制作步骤如下:
(1)形成光亮基体载带;
(2)在光亮基体载带上采用蒸发镀或者电沉积或者化学沉积技术, 依次形 成需要的两层以上的实心屏蔽层;
(3)在所述实心屏蔽层外表面形成绝缘膜层;
(4)在绝缘膜层上贴合可转移胶膜, 将绝缘膜层和实心屏蔽层从光亮基体 载带上剥离下来;
(5)在所述实心屏蔽层另一侧外表面形成需要的导电胶层
(6)根据需要在导电胶层面贴合保护层。
关于具体制作两层以上的实心屏蔽层的制作工艺可以依发明人在 2009年申 请的公开号为 CN101486264, 专利名称为《一种可剥离的超薄转移载体金属箔及 其制造方法》 的中国发明专利申请。
以上所述者, 仅为本发明的较佳实施例而已, 当不能以此限定本发明实施的 范围, 即大凡依本发明申请专利范围及发明说明内容所作的简单的等效变化与 修饰, 皆仍属本发明专利涵盖的范围内。

Claims

1、 一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 包括两层以上的实心屏蔽 层。
2、 根据权利要求 1所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 所述 实心屏蔽层为在逐层表面上依次形成。
3、 根据权利要求 2所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 所述 实心屏蔽层至少有两层由不同材料制成。
4、 根据权利要求 1所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 所述 实心屏蔽层一侧外表面形成有导电胶层, 所述实心屏蔽层另外一侧外表面形成 有一层以上的绝缘膜层。
5、 根据权利要求 1所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 所述 绝缘膜层为连接在一起的第一绝缘膜层和第二绝缘膜层组成,厚度为 3- 25微米。
6、 根据权利要求 5所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 所述 第一绝缘膜层选用的材料是 PPS、 PEN, 聚酯或者聚酰亚胺薄膜; 第二绝缘膜层 是涂布的环氧树脂、 聚氨酯类树脂、 丙烯酸树脂或者聚酰亚胺树脂。
7、 根据权利要求 4、 5或者 6所述一种高屏蔽效能的极薄屏蔽膜, 其特征 在于, 所述绝缘膜层外表面覆盖有载体膜层, 所述导电胶层外表面根据需要形 成有保护膜。
8、 根据权利要求 1所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 所述 实心屏蔽层的材料是铝、 钛、 锌、 铁、 镍、 铬、 钴、 铜、 银或金, 或者是包含 上述金属中任意一种以上的金属合金, 或者是铁氧体、 碳纳米管; 厚度为 0. 01 微米 -0. 5微米之间。
9、 根据权利要求 8所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 所述 实心屏蔽层厚度选择 0. 01微米 -0. 2微米之间。
10、 根据杈利要求 4所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 所 述导电胶层中的粘合剂是聚苯乙烯系、 乙酸乙烯酯类、 聚酯类、 聚乙烯类、 聚 酰胺类、 橡胶类丙烯酸酯类热塑性树脂, 或者使用酚醛类、 环氧类、 氨基甲酸 酯类、 三聚氰胺类或醇酸类热固性树脂, 导电粒子是碳、 银、 镍、 铜颗粒、 镍 金、 铜镍、 铜银、 镍银、 镍金、 银包玻璃或者铜镍金颗粒或者碳纳米管, 其导 电粒子与胶的重量比为 10%到 400%; 厚度为 3um至 50um。
11、 根据权利要求 4所述一种高屏蔽效能的极薄屏蔽膜, 其特征在于, 导 电胶层厚度为 5um- 20um, 重量比为 1C%- 100»/。; 导电粒子选择银包铜粒子、 镍包 铜粒子、 银粒子、 铜粒子或镍粒子。
12、根据权利要求 1-11任一所述一种高屏蔽效能的极薄屏蔽膜的制作方法, 其特征在于, 包括以下步骤:
1 )在载体膜层上形成绝缘膜层;
2)在绝缘膜层上形成第一实心屏蔽层;
3)在第一实心屏蔽层上表面形成至少一层实心屏蔽层;
4)在最外层心屏蔽层的外表面形成有导电胶层。
13、根据权利要求 1-11任一所述一种高屏蔽效能的极薄屏蔽膜的制作方法, 其特征在于, 包括以下制作步骤:
1)根据需要形成可剥离的两层以上的实心屏蔽层;
2) 在所述实心屏蔽层一侧外表面形成绝缘膜层;
3) 在所述实心屏蔽层另一侧外表面形成需要的导电胶层。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110691501A (zh) * 2018-07-06 2020-01-14 广州方邦电子股份有限公司 电磁屏蔽膜、线路板及电磁屏蔽膜的制备方法
CN112259281A (zh) * 2020-11-19 2021-01-22 深圳市乐工新技术有限公司 柔性超薄导电材料的制作方法

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI482585B (zh) * 2012-12-21 2015-04-21 Ind Tech Res Inst 屏蔽複合膜片
JP2015015304A (ja) * 2013-07-03 2015-01-22 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、電子機器およびそれらの製造方法
GB201312243D0 (en) 2013-07-08 2013-08-21 Samsung Electronics Co Ltd Non-Uniform Constellations
CN104302091A (zh) * 2013-07-16 2015-01-21 昆山雅森电子材料科技有限公司 天线板制作叠构
CN103717050A (zh) * 2013-12-03 2014-04-09 明冠新材料股份有限公司 一种薄型柔性热固化电磁屏蔽胶膜
CN103619154B (zh) * 2013-12-09 2016-09-14 保定乐凯新材料股份有限公司 一种具有高效屏蔽与电磁吸收的电磁防护膜
CN103722832B (zh) * 2013-12-26 2015-12-30 北京工商大学 一种绝缘聚合物基电磁屏蔽材料及其制备方法
CN103763893B (zh) * 2014-01-14 2016-04-13 广州方邦电子股份有限公司 电磁波屏蔽膜以及包含屏蔽膜的线路板的制作方法
CN105324019B (zh) * 2014-07-22 2019-04-26 常州欣盛微结构电子有限公司 屏蔽膜及其制造方法
JP5861790B1 (ja) 2015-02-25 2016-02-16 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
CN104853577B (zh) * 2015-05-13 2018-06-15 李金明 超薄电磁屏蔽膜生产工艺
CN105150624B (zh) * 2015-08-12 2017-07-07 湖南深泰虹科技有限公司 一种碳纳米管、铜复合电磁屏蔽膜及其制备方法
CN105246313B (zh) * 2015-09-29 2018-07-27 朱春芳 一种电磁波屏蔽膜、含有该屏蔽膜的印刷线路板及该线路板的制备方法
US10652996B2 (en) * 2015-12-21 2020-05-12 3M Innovative Properties Company Formable shielding film
JP6481864B2 (ja) * 2015-12-25 2019-03-13 東レKpフィルム株式会社 金属化フィルムおよびその製造方法
TWI748975B (zh) * 2015-12-25 2021-12-11 日商拓自達電線股份有限公司 電磁波屏蔽膜及其製造方法
CN108601215B (zh) * 2016-02-25 2020-01-14 Oppo广东移动通信有限公司 软硬结合板及终端
US10147685B2 (en) * 2016-03-10 2018-12-04 Apple Inc. System-in-package devices with magnetic shielding
CN106003916A (zh) * 2016-05-04 2016-10-12 胡银坤 一种电磁屏蔽膜
CN107791641B (zh) * 2016-08-30 2020-01-14 昆山雅森电子材料科技有限公司 具有双层金属层的高遮蔽性电磁干扰屏蔽膜及其制备方法
CN108513521B (zh) * 2017-02-24 2024-03-22 昆山雅森电子材料科技有限公司 具黑色聚酰亚胺薄膜之高遮蔽性emi屏蔽膜及其制备方法
CN108541204B (zh) * 2017-03-01 2020-11-17 昆山雅森电子材料科技有限公司 复合式高遮蔽性薄型化电磁干扰屏蔽膜及其制备方法
CN106659108A (zh) * 2017-03-09 2017-05-10 东莞市纳利光学材料有限公司 一种电磁屏蔽膜及其制备方法
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
US20210059042A1 (en) * 2017-07-10 2021-02-25 Tatsuta Electric Wire & Cable Co., Ltd. Electromagnetic Shielding Film and Shielded Printed Wiring Board Including the Same
CN107189708B (zh) * 2017-07-17 2023-08-29 东莞市鸿兴烫画材料有限公司 一种与金属高结合力的导电胶膜及其制备方法
CN107734841A (zh) * 2017-09-28 2018-02-23 中山国安火炬科技发展有限公司 一种用于柔性电路板的复合绝缘膜及其制备方法
TWI787448B (zh) 2018-02-01 2022-12-21 德商漢高股份有限及兩合公司 用於屏蔽系統級封裝組件免受電磁干擾的方法
KR102039245B1 (ko) * 2018-02-22 2019-11-01 주식회사 신흥머티리얼즈 커버레이 필름 구조체
KR20190105455A (ko) * 2018-03-05 2019-09-17 삼성에스디아이 주식회사 전자파 차폐용 도전성 조성물, 이로부터 제조된 전자파 차폐층, 이를 포함하는 회로기판 적층체 및 전자파 차폐층 형성방법
CN108323144B (zh) * 2018-03-14 2020-07-28 广州方邦电子股份有限公司 电磁屏蔽膜、线路板及电磁屏蔽膜的制备方法
US11424048B2 (en) * 2018-06-28 2022-08-23 Carlisle Interconnect Technologies, Inc. Coaxial cable utilizing plated carbon nanotube elements and method of manufacturing same
CN110691497B (zh) * 2018-07-06 2024-04-23 广州方邦电子股份有限公司 电磁屏蔽膜、线路板及电磁屏蔽膜的制备方法
CN109130383B (zh) * 2018-07-25 2019-09-10 深圳市弘海电子材料技术有限公司 一种双层电磁屏蔽膜及其制备方法
CN109068554B (zh) * 2018-07-25 2020-04-07 深圳市弘海电子材料技术有限公司 一种fpc用反射型电磁屏蔽膜及其制备方法
CN110769677A (zh) * 2018-07-27 2020-02-07 广州方邦电子股份有限公司 电磁屏蔽膜、线路板及电磁屏蔽膜的制备方法
CN109081638B (zh) * 2018-08-29 2020-11-20 广州大学 一种电磁波损耗复合材料及其制备方法和应用
CN109168313A (zh) * 2018-09-10 2019-01-08 深圳科诺桥科技股份有限公司 电磁屏蔽膜以及包含屏蔽膜的线路板
KR102543301B1 (ko) 2018-09-10 2023-06-14 삼성전자 주식회사 테이프 부재 및 이를 포함하는 전자 장치
TWI699279B (zh) 2018-10-22 2020-07-21 長興材料工業股份有限公司 電磁波屏蔽膜及其製備方法與用途
CN110783019A (zh) * 2018-11-26 2020-02-11 广州方邦电子股份有限公司 导电胶膜、线路板及导电胶膜的制备方法
CN110783024A (zh) * 2018-11-26 2020-02-11 广州方邦电子股份有限公司 导电胶膜、线路板及导电胶膜的制备方法
CN110783018A (zh) * 2018-11-26 2020-02-11 广州方邦电子股份有限公司 导电胶膜、线路板及导电胶膜的制备方法
CN110783020A (zh) * 2018-11-26 2020-02-11 广州方邦电子股份有限公司 导电胶膜、线路板及导电胶膜的制备方法
CN110783023A (zh) * 2018-11-26 2020-02-11 广州方邦电子股份有限公司 导电胶膜、线路板及导电胶膜的制备方法
CN110783016A (zh) * 2018-11-26 2020-02-11 广州方邦电子股份有限公司 导电胶膜、线路板及导电胶膜的制备方法
CN110783021A (zh) * 2018-11-26 2020-02-11 广州方邦电子股份有限公司 导电胶膜、线路板及导电胶膜的制备方法
CN110783017B (zh) * 2018-11-26 2024-03-19 广州方邦电子股份有限公司 导电胶膜、线路板及导电胶膜的制备方法
TW202025179A (zh) * 2018-12-19 2020-07-01 吳震一 線材結構及其製造方法
US11109519B2 (en) * 2019-01-15 2021-08-31 Hdt Expeditionary Systems, Inc. Mission configurable shelter
CN109688782A (zh) * 2019-01-31 2019-04-26 常州斯威克新材料科技有限公司 一种无导电颗粒电磁屏蔽膜及其制备方法
CN111696700A (zh) * 2019-03-12 2020-09-22 泰连服务有限公司 具有期望的机械特性和电气特性组合的金属结构
US11843153B2 (en) 2019-03-12 2023-12-12 Te Connectivity Solutions Gmbh Use of enhanced performance ultraconductive copper materials in cylindrical configurations and methods of forming ultraconductive copper materials
WO2020198206A1 (en) 2019-03-26 2020-10-01 Hasbro, Inc. Toy projectile safety system
CN113785169B (zh) 2019-03-26 2024-07-16 孩之宝有限公司 玩具弹射件
CN110149790B (zh) * 2019-05-31 2020-10-27 厦门大学 一种石墨烯电磁屏蔽膜及其制备方法
CN111163623A (zh) * 2019-07-05 2020-05-15 海宁卓泰电子材料有限公司 一种多层金属结构的屏蔽膜
CN110994164B (zh) * 2019-09-06 2023-02-17 深圳科诺桥科技股份有限公司 一种全方位屏蔽的天线结构
CN110970729B (zh) * 2019-09-06 2021-08-27 深圳科诺桥科技股份有限公司 一种全方位屏蔽的天线结构及天线
KR102124327B1 (ko) * 2019-10-23 2020-06-23 와이엠티 주식회사 무전해 도금층을 이용한 회로기판용 전자파 차폐소재 및 이를 이용한 회로기판의 제조방법
TWI710312B (zh) * 2020-02-12 2020-11-11 亞洲電材股份有限公司 具有高電磁屏蔽功能的高頻覆蓋膜及其製備方法
KR102364069B1 (ko) * 2020-04-21 2022-02-17 브이메이커(주) 전자기파 차폐 소재 및 이의 제조방법
WO2022009554A1 (ja) * 2020-07-07 2022-01-13 正毅 千葉 電磁波吸収材、電磁波吸収塗料、電子デバイスおよび樹脂部品
CN112512289A (zh) * 2020-11-23 2021-03-16 江苏展宝新材料有限公司 一种聚芳噁二唑屏蔽薄膜及其制备方法
CN112831288A (zh) * 2021-01-11 2021-05-25 苏州清祥电子科技有限公司 一种屏蔽效果好的导电布胶带
CN112888288B (zh) * 2021-01-18 2022-10-28 哈尔滨工业大学 一种基于超薄掺杂金属/介质复合结构的电磁屏蔽曲面光学窗
CN113621299A (zh) * 2021-09-08 2021-11-09 青岛九维华盾科技研究院有限公司 一种轻质宽频电磁屏蔽涂料及其制备方法
EP4243038A1 (en) * 2022-03-10 2023-09-13 Nexans Water barrier materials for a dynamic power cable for submarine applications
CN114759411A (zh) * 2022-03-14 2022-07-15 吉林省中赢高科技有限公司 一种具有固态冷却介质的连接器总成及一种车辆
CN114585249A (zh) * 2022-03-28 2022-06-03 西安工业大学 一种基于超材料结构的电磁屏蔽膜
KR102597064B1 (ko) * 2022-04-28 2023-10-31 주식회사 현대케피코 전자파 차폐재 및 그 제조방법
KR102597010B1 (ko) * 2022-08-30 2023-10-31 주식회사 현대케피코 전자파 차폐재 및 그 제조방법
TW202411073A (zh) * 2022-09-06 2024-03-16 亞洲電材股份有限公司 生物基樹脂薄膜及使用其之覆蓋膜

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1787114A (zh) * 2005-12-06 2006-06-14 安泰科技股份有限公司 一种复合电磁屏蔽薄膜材料及其制造方法
CN101486264A (zh) * 2009-02-17 2009-07-22 广州力加电子有限公司 一种可剥离的超薄转移载体金属箔及其制造方法
CN201332571Y (zh) * 2008-12-25 2009-10-21 广州力加电子有限公司 可改变电路阻抗的极薄屏蔽膜及电路板
CN101448362B (zh) * 2008-12-25 2010-10-06 广州通德电子科技有限公司 可改变电路阻抗的极薄屏蔽膜、电路板及其制作方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6144499A (ja) * 1984-08-09 1986-03-04 凸版印刷株式会社 電磁波遮蔽性を有する合成樹脂製筐体
US4647714A (en) * 1984-12-28 1987-03-03 Sohwa Laminate Printing Co., Ltd. Composite sheet material for magnetic and electronic shielding and product obtained therefrom
JP2664940B2 (ja) * 1988-07-29 1997-10-22 日本黒鉛工業株式会社 膨脹黒鉛複合シートの製造方法
JP3532611B2 (ja) * 1994-04-28 2004-05-31 王子製紙株式会社 透明電磁波シールドフィルムおよびそれを用いた光拡散材の製造方法
WO2005101941A1 (ja) * 2004-03-30 2005-10-27 Geltec Co., Ltd. 電磁波吸収体
JP2006156946A (ja) * 2004-11-04 2006-06-15 Kitagawa Ind Co Ltd 電磁波シールドフィルム
JP2006179253A (ja) * 2004-12-22 2006-07-06 Tdk Corp Esd抑制方法及び抑制構造
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
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
US8043452B2 (en) * 2007-11-01 2011-10-25 The Boeing Company Multifunctional electromagnetic shielding
JP2010206182A (ja) * 2009-02-05 2010-09-16 Toshiba Corp 電磁シールドシート
JP2011018873A (ja) * 2009-05-22 2011-01-27 Sony Ericsson Mobilecommunications Japan Inc 電磁シールド方法および電磁シールド用フィルム
US9167735B2 (en) * 2010-06-23 2015-10-20 Inktec Co., Ltd. Method for manufacturing electromagnetic interference shielding film
JP5726048B2 (ja) * 2011-11-14 2015-05-27 藤森工業株式会社 Fpc用電磁波シールド材

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1787114A (zh) * 2005-12-06 2006-06-14 安泰科技股份有限公司 一种复合电磁屏蔽薄膜材料及其制造方法
CN201332571Y (zh) * 2008-12-25 2009-10-21 广州力加电子有限公司 可改变电路阻抗的极薄屏蔽膜及电路板
CN101448362B (zh) * 2008-12-25 2010-10-06 广州通德电子科技有限公司 可改变电路阻抗的极薄屏蔽膜、电路板及其制作方法
CN101486264A (zh) * 2009-02-17 2009-07-22 广州力加电子有限公司 一种可剥离的超薄转移载体金属箔及其制造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110691501A (zh) * 2018-07-06 2020-01-14 广州方邦电子股份有限公司 电磁屏蔽膜、线路板及电磁屏蔽膜的制备方法
CN112259281A (zh) * 2020-11-19 2021-01-22 深圳市乐工新技术有限公司 柔性超薄导电材料的制作方法

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