WO2009090927A1 - フラットケーブル - Google Patents
フラットケーブル Download PDFInfo
- Publication number
- WO2009090927A1 WO2009090927A1 PCT/JP2009/050269 JP2009050269W WO2009090927A1 WO 2009090927 A1 WO2009090927 A1 WO 2009090927A1 JP 2009050269 W JP2009050269 W JP 2009050269W WO 2009090927 A1 WO2009090927 A1 WO 2009090927A1
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- WIPO (PCT)
- Prior art keywords
- flat cable
- layer
- metal
- conductive adhesive
- adhesive layer
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0861—Flat or ribbon cables comprising one or more screens
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- 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
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0098—Shielding materials for shielding electrical cables
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0393—Flexible materials
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0335—Layered conductors or foils
- H05K2201/0338—Layered conductor, e.g. layered metal substrate, layered finish layer, layered thin film adhesion layer
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/07—Electric details
- H05K2201/0707—Shielding
- H05K2201/0715—Shielding provided by an outer layer of PCB
Definitions
- the present invention relates to a flat cable used as a relay cable for various parts disposed in various electronic device products.
- a flat cable is often used as a relay cable for various components disposed therein.
- a flat cable there is a flexible printed circuit board (Flexible-Print-Circuit) type manufactured by using a so-called etching method, but it is expensive and the length of the cable can only be 1000 mm or less because of the manufacturing infrastructure.
- Flexible-Print-Circuit Flexible-Print-Circuit
- a flexible flat cable (Flexible Flat Cable) manufactured by using a so-called laminating method is attracting attention.
- the flexible flat cable can be used for moving parts because of its excellent flexibility, and it can be used in a wide range of fields from the viewpoint that the manufacturing cost is lower and the unit price of the product is lower than that of the flexible printed circuit board type. It is being applied.
- the flexible flat cable has never been required to have electrical characteristics such as characteristic impedance. Therefore, for example, as shown in FIG. 11, the flexible flat cable is obtained by sandwiching the central conductor 101 from both sides with a base film 103 such as polyethylene terephthalate to which a predetermined adhesive layer 102 is attached, and laminating the same. It was possible to satisfy the required specifications simply by bonding the base film 103 on both sides.
- a base film 103 such as polyethylene terephthalate to which a predetermined adhesive layer 102 is attached
- the periphery of the center conductor 201 is covered with a dielectric 202, the periphery thereof is further covered with an external conductor 203, and the outermost layer is covered with a predetermined jacket 204.
- a coaxial cable formed by insulating coating.
- Such a coaxial cable is located in a high-end model in terms of high-frequency characteristics and is expensive. Further, since a plurality of coaxial lines are arranged and soldered to the connector, the cable length is likely to vary, which may cause a signal propagation delay. In the coaxial cable, since it is difficult to manufacture such variations in cable length, 100% inspection is indispensable, which causes a rise in manufacturing cost. Therefore, in recent years, flat type impedance control cables have attracted attention as an alternative to coaxial cables from the viewpoint of cost reduction.
- the microstrip structure and the impedance control cable having the strip structure have already been introduced into the market, and in particular, the microstrip structure is adopted in some thin televisions.
- Patent Document 8 discloses a shielded cable in which a shield tape with a metal foil attached to one side of a heat-flexible insulating sheet is folded in half so that the metal foil is on the outside, and is wrapped around the cable outer periphery. Is disclosed.
- the flexible flat cable having the microstrip structure in which the ground 303 described above is provided only on one side of the transmission path cannot be expected to suppress radiation on the surface facing the surface on which the ground 303 is provided. For this reason, in the flexible flat cable having the microstrip structure, the radiation problem has been taken out, and there is a case where this type of cable is not used for mounting on a product.
- the grounds 403 on both sides act as a shield layer. Therefore, although the structure is suitable for suppressing radiation, the grounds 403 as external conductors are provided on both sides. Since there is a problem of increasing the cable thickness, a metal vapor deposition layer having a thickness of less than 1 ⁇ m is often used as the outer conductor. However, in such a strip-structured flexible flat cable, although the characteristic impedance can be controlled, it is difficult to suppress the deterioration of the transmission characteristics due to the thin metal deposition layer. Therefore, in a flexible flat cable having a strip structure, transmission characteristics are also improved by using a metal foil as an external conductor instead of a metal vapor deposition layer.
- the thickness of the outer conductor is required to be several ⁇ m in consideration of the effect of the conductor loss, and as a result, the flexibility and the bending resistance are greatly lowered.
- the thickness of these cables has increased, and the tendency to decrease flexibility and bending resistance has progressed, and wiring inside the mounted electronic equipment is performed flexibly. The problem of being unable to do so has become a reality.
- the present invention has been made in view of such circumstances, and can realize excellent flexibility and bending resistance without impairing excellent electrical characteristics due to the strip structure, thereby improving cost performance.
- An object of the present invention is to provide a flat cable that can be made to operate.
- the inventor of the present application uses a metal layer of a shield material that has conventionally been configured using one type of metal, By forming using a flexible material having electrical conductivity, it has been found uniquely that it can function as a single metal layer in which the ridges are integrated when viewed electrically, and the present invention has been made.
- the flat cable according to the present invention that achieves the above-described object covers a cable body including a plurality of conductors arranged at a predetermined pitch, a ground layer provided on the cable body, and a surface of the cable body.
- a shield material provided so as to have a metal material formed by interposing a first conductive adhesive layer between a plurality of metal layers, and the outermost metal layer
- One of the layers is characterized in that one metal layer is electrically connected to the ground layer.
- the metal material forming the shield material uses the first conductive adhesive layer and the metal layer made of a flexible material, thereby providing the first conductive property.
- the first conductive adhesive layer and the metal layer are electrically connected through the conductive particles contained in the adhesive layer. That is, in the flat cable according to the present invention, when viewed electrically, the metal material is formed so as to function as a single metal layer in which the collar is integrated.
- the flat cable according to the present invention can maintain the electrical characteristics by the first conductive adhesive layer even if the metal layer is thin, and even if the thickness of the entire metal material is increased, Flexibility and bending resistance can be improved by the first conductive adhesive layer made of a soft material.
- the flat cable according to the present invention has an air-containing layer as an insulating material that has substantially the same width as the transmission path width of the cable body, and is provided so as to sandwich the cable body from both sides.
- the air-containing layer it is preferable that the air-containing layer is configured using a non-woven fabric cut to approximately the same width as the transmission path width of the cable body.
- the shield layer is provided so as to cover the surface of the air-containing layer and to be electrically connected to the ground layer at the terminal portions at both ends of the cable body.
- the flat cable according to the present invention can reduce the thickness of the cable by using a nonwoven fabric as an air-containing layer that functions as an insulating material, compared to the case where a resin insulating material is used. Excellent flexibility and bending resistance can be realized. Moreover, in the flat cable concerning this invention, it becomes possible to adjust a dielectric constant arbitrarily and to control characteristic impedance by changing the width
- a flat cable that realizes excellent flexibility and bending resistance can be manufactured by using an inexpensive manufacturing process without impairing the excellent electrical characteristics of the strip structure.
- FIG. 2 is a cross-sectional view illustrating the configuration of the flexible flat cable shown as the embodiment of the present invention, and is a cross-sectional view taken along the line AA in FIG. It is sectional drawing explaining the structure of the 1st ground foil provided in the flexible flat cable shown as embodiment of this invention, and a 2nd ground foil. It is sectional drawing explaining the structure of the 1st shield material and 2nd shield material which are provided in the flexible flat cable shown as embodiment of this invention. It is a top view explaining the other structure of the flexible flat cable shown as embodiment of this invention.
- FIG. 2 is a cross-sectional view illustrating the configuration of the flexible flat cable shown as the embodiment of the present invention, and is a cross-sectional view taken along the line AA in FIG. It is sectional drawing explaining the structure of the 1st ground foil provided in the flexible flat cable shown as embodiment of this invention, and a 2nd ground foil. It is sectional drawing explaining the structure of the 1st shield material and 2nd shield material which are provided in the flexible flat cable shown
- FIG. 6 is a cross-sectional view illustrating another configuration of the flexible flat cable shown as the embodiment of the present invention, and is a cross-sectional view taken along the line AA in FIG. 5. It is a top view explaining the structure of the flexible flat cable produced as an Example of this invention. It is a figure explaining the result of having measured differential impedance using the flexible flat cable shown in FIG. It is a figure explaining the result of having measured the transmission characteristic (S21) using the flexible flat cable shown in FIG. 7, and the flexible flat cable produced as a comparative example. It is a figure explaining the result of having measured the eye pattern using the flexible flat cable shown in FIG. 7, and the flexible flat cable produced as a comparative example. It is sectional drawing explaining the structure of the conventional flexible flat cable. It is a figure explaining the structure of a coaxial cable. It is sectional drawing explaining the structure of the flexible flat cable of a microstrip structure. It is sectional drawing explaining the structure of the flexible flat cable of a strip structure.
- This embodiment is a flexible flat cable (FFC) used as a relay cable for various parts disposed in various electronic device products.
- this flexible flat cable has a conventional metal foil shield while maintaining the flexibility and bending resistance of the cable itself by artificially forming a single metal layer using a conductive adhesive. It is possible to achieve the same electrical characteristics as a flat cable using a cable.
- the metal layer is a term indicating both a metal foil and a metal vapor deposition layer.
- the flexible flat cable 1 includes a plurality of conductors 11 arranged in parallel at a predetermined pitch. Is provided with a cable body 10 that is sandwiched from both sides by a first insulating material 12 and a second insulating material 13 provided with a predetermined adhesive layer and laminated. That is, the cable body 10 is configured as a cable having a strip structure.
- the conductor 11 for example, an annealed copper material that has been surface-treated by tin plating can be used.
- the 1st insulating material 12 and the 2nd insulating material 13 what laminated
- an epoxy resin, an acrylic resin, a melamine resin, a polyamide resin, a polyimide resin or the like can be used as a binder resin, and in particular, from the viewpoint of adhesive strength and availability, epoxy It is desirable to use a resin or acrylic resin as a binder resin.
- the first ground foil 14 and the second ground foil 15 constituting the ground layer are provided at the terminal portions at both ends of the cable body 10.
- Each of the first ground foil 14 and the second ground foil 15 is configured, for example, as a laminate of a metal layer 20 and an acrylic adhesive layer 21 as shown in FIG. It is provided with the release paper 22 attached to the lower layer.
- the metal layer 20 may be any metal as long as it is gold, silver, copper, lead, or any other metal that exhibits good conductivity. In particular, from the viewpoint of electrical characteristics and availability, copper It is desirable to use aluminum.
- an acrylate used for the acrylic adhesive layer 21 a monofunctional acrylate, a bifunctional acrylate, a trifunctional or higher polyfunctional acrylate, etc.
- the first ground foil 14 and the second ground foil 15 are formed of the first insulating material 12 and the second insulating material 13 through the acrylic adhesive layer 21 exposed by peeling the release paper 22, respectively. It is stuck from the end portion to the terminal portion of the cable body 10.
- a first shield material 16 and a second shield material 17 are provided so as to cover the surfaces of the first insulating material 12 and the second insulating material 13.
- Each of the first shield material 16 and the second shield material 17 includes a metal material 30 in which metal layers 32 and 33 are formed on both surfaces of a conductive adhesive layer 31, and a base film, for example, as shown in FIG.
- the polyethylene terephthalate film 34 is laminated, and a conductive adhesive layer 35 is further provided on the surface facing the polyethylene terephthalate film 34.
- One of the metal layers 32 and 33 of the first shield material 16 and the second shield material 17 is connected to the first ground foil 14 and the second ground via the conductive adhesive layer 35, respectively.
- the 1st shield material 16 and the 2nd shield material 17 function also as ground.
- the conductive adhesive layers 31 and 35 those using an epoxy resin, an acrylic resin, a melamine resin, a polyamide resin, a polyimide resin or the like as a binder resin can be used, and in particular, from the viewpoint of adhesive strength and availability. Therefore, it is desirable to use an epoxy resin or an acrylic resin as a binder resin.
- each of the first shield material 16 and the second shield material 17 includes the metal material 30 formed by interposing the conductive adhesive layer 31 between the two metal layers 32 and 33. .
- the conductive adhesive layer 31 is made of an anisotropic conductive adhesive film (ACF), an anisotropic conductive adhesive paste (ACP), or the like. These anisotropic conductive adhesives are made of a material in which fine conductive particles are dispersed in a binder resin. By applying pressure and heating, the anisotropic conductive adhesive is electrically connected in the thickness direction through the conductive particles together with the adhesive function. It has a connection function, and has an insulation function in the direction perpendicular to the thickness direction. From the viewpoint of electrical characteristics, it is desirable to use a conductive adhesive layer 31 having a thickness of 10 to 50 ⁇ m.
- the metal layers 32 and 33 are, for example, a metal foil such as copper attached to both surfaces of the conductive adhesive layer 31, a metal vapor deposited layer such as silver deposited on both surfaces of the conductive adhesive layer 31, or a conductive adhesive layer. It is formed as a metal plating layer in which metal is plated on both surfaces of 31.
- any metal such as gold, silver, copper, lead, and other metals showing good conductivity may be used, and particularly from the viewpoint of electrical characteristics and availability. It is desirable to use silver.
- the metal layers 32 and 33 using the metal foil are most desirable among the types of the metal foil, the vapor deposition layer, and the metal plating layer.
- the thickness of the metal layers 32 and 33 is preferably 0.05 ⁇ m to 0.5 ⁇ m.
- the metal material 30 composed of the conductive adhesive layer 31 and the metal layers 32 and 33 includes the conductive adhesive layer 31 and the metal layers 32 and 33 via the conductive particles included in the conductive adhesive layer 31. Are electrically connected. That is, in the flexible flat cable 1, the metal material 30 is formed so as to function as a single metal layer in which the ridges are integrated when viewed electrically.
- the flexible flat cable 1 uses the metal material 30 as described above to form the first shield material 16 and the second shield material 17, thereby using only the conventional metal deposition layer as the shield layer. Compared to the above, a metal layer thicker than the conductive adhesive layer 31 can be formed, so that the transmission characteristics can be improved.
- the flexible flat cable 1 is excellent even if the thickness of the metal material 30 is increased because a part of the metal material 30 is a conductive adhesive layer 31 made of a flexible material of resin and conductive particles. Flexibility and bending resistance can be realized.
- the flexible flat cable 1 can not only control the characteristic impedance, but also impairs excellent electrical characteristics due to the strip structure such as transmission loss, eye pattern aperture ratio, and unnecessary radiation (Electromagnetic Interference; EMI). Therefore, excellent flexibility and bending resistance can be realized.
- the flexible flat cable 1 forms the metal material 30 using the electroconductive contact bonding layer 31, it can manufacture at low cost and can improve cost performance.
- the flexible flat cable 1 can be manufactured by thermal lamination as in the existing manufacturing process, and can be manufactured by an existing manufacturing process using an inexpensive material. Is possible.
- the flexible flat cable 1 can be easily lengthened because it can be manufactured by thermal lamination, and a high yield can be realized.
- Such a flexible flat cable 1 is used in various electronic equipment products that require high-speed signal transmission, such as notebook personal computers and thin televisions that require high-definition image transmission. It is very suitable to apply.
- the metal material in which the metal layer is formed on both surfaces of the conductive adhesive layer has been described.
- the present invention can be achieved by alternately laminating the conductive adhesive layer and the metal layer.
- one metal layer of the outermost metal layers is a first ground foil and a second ground foil You may make it conduct.
- the metal layer has two layers, that is, the same configuration as the metal material 30 described above. Is most desirable.
- the first insulating material and the second insulating material are described as those in which a predetermined dielectric adhesive layer is laminated on a low dielectric material made of polyethylene terephthalate containing pores.
- the dielectric constant may be arbitrarily adjusted to control the characteristic impedance.
- a specific example of such a flexible flat cable will be described with reference to FIGS. 5 and 6.
- both sides of the cable body 10 are sandwiched between a first nonwoven fabric 41 and a second nonwoven fabric 42 as air-containing layers having substantially the same width as the transmission path width of the cable body 10.
- the first nonwoven fabric 41 and the second nonwoven fabric 42 are cut to substantially the same width as the transmission line width of the cable body 10 in a state where the first nonwoven fabric 41 and the second nonwoven fabric 42 are bonded to predetermined double-sided adhesive layers 43 and 44 such as double-sided tape. It is provided and functions as an insulating material by being attached to the cable body 10 through the double-sided adhesive layers 43 and 44.
- the first nonwoven fabric 41 and the second nonwoven fabric 42 may be made of cellulose, polyester, aramid, polyimide or the like impregnated with a flame retardant, and in particular, heat resistance and difficulty. From the viewpoint of flammability, it is desirable to use a cellulose-based or aromatic aramid-based material impregnated with a flame retardant.
- the first ground foil 14 and the second ground foil 15 are respectively exposed from the end portions of the first nonwoven fabric 41 and the second nonwoven fabric 42 through the acrylic adhesive layer 21 exposed by peeling the release paper 22. It sticks over the terminal part of the cable body 10.
- the first shield material 16 and the second shield material 17 proposed in the present invention are provided so as to cover the surfaces of the first nonwoven fabric 41 and the second nonwoven fabric 42, respectively.
- the flexible flat cable 40 can be made thinner than the flexible flat cable 1 and more excellent. Flexibility can be realized.
- the flexible flat cable 40 can greatly improve the resistance to stress applied during bending by using the first nonwoven fabric 41 and the second nonwoven fabric 42 without using a resin insulating material.
- the flexible flat cable 40 can arbitrarily adjust the dielectric constant and control the characteristic impedance by changing the width and thickness of the conductor 11 and the thickness of the first nonwoven fabric 41 and the second nonwoven fabric 42. Therefore, the excellent electrical characteristics due to the strip structure are not impaired.
- the flexible flat cable 40 is an electronic device that mounts the flexible flat cable 40 by using the first nonwoven fabric 41 and the second nonwoven fabric 42 that have excellent heat resistance and practical flame retardancy. It is possible to cope with the ignition caused by the increase in the amount of heat generated with the increase in the density of the circuit of the device.
- the flexible flat cable 40 can be manufactured by thermal lamination as in the existing manufacturing process.
- a resin is used as an insulating material as in the past, it is difficult to manufacture by heat lamination due to its properties, and it is necessary to perform hot pressing. Since such a heat press is an individual work, there is a problem that it affects productivity and cost and does not meet market demands.
- the flexible flat cable 40 can be manufactured by thermal lamination, the productivity can be improved and the manufacturing cost can be reduced.
- the conductor 11 is made of soft copper having a width of 0.25 mm ⁇ thickness of 0.040 mm and surface-treated by tin plating, and is parallel at a pitch of 0.5 mm.
- the first insulating material 12 and the second insulating material 13 each have a total thickness of 64 ⁇ m obtained by laminating an insulating adhesive layer having a thickness of 41 ⁇ m on a low dielectric material made of polyethylene terephthalate containing pores having a thickness of 23 ⁇ m. Insulation material “F2100” manufactured by Sony Chemical & Information Device Corporation was used.
- the first ground foil 14 and the second ground foil 15, respectively as shown in FIG.
- a metal layer 20 made of aluminum having a thickness of 30 ⁇ m and an acrylic adhesive layer 21 having a thickness of 10 ⁇ m are provided.
- the laminated ground foil “AL7080” manufactured by Sony Chemical & Information Device Corporation having a total thickness of 40 ⁇ m was used.
- the metal layers 32 and 33 are formed on both surfaces of the conductive adhesive layer 31 having a thickness of 20 ⁇ m.
- a 49.2 ⁇ m shield material was used.
- a flexible flat cable having 21 pins and a cable length of 1000 mm was manufactured using a material having such specifications.
- the inventor of the present application uses a flexible flat cable in which the specifications of the first shield material and the second shield material among the specifications shown in Table 1 above are the same shield materials as those currently introduced in the market. It was produced as a comparative example.
- the flexible flat cable produced as the first comparative example uses only a metal foil as a shield layer.
- the first shield material and the second shield material have a thickness of 12 ⁇ m.
- a shield material having a total thickness of 32 ⁇ m in which a conductive adhesive layer having a thickness of 20 ⁇ m was provided on a copper foil was used.
- the flexible flat cable produced as a 2nd comparative example uses only a metal vapor deposition layer as a shield layer, and as shown in following Table 3, it is a silver terephthalate film with a thickness of 0.1 micrometer on a polyethylene terephthalate film with a thickness of 9 micrometers.
- the inventor of the present application measured the differential impedance by a so-called TDR (Time-Domain-Reflectometry) method using a flexible flat cable produced as an example.
- the TDR method is a method capable of measuring electromagnetic waves in a high frequency band from 1 MHz to 30 GHz and displaying the waveform on the time axis.
- the target differential impedance is 100 ⁇ ⁇ 10%. The measurement results are shown in FIG.
- the so-called transmission characteristics (S21) and the eye pattern were measured using the flexible flat cable produced as an example and the flexible flat cable produced as a comparative example.
- the eye pattern was measured when the rise time Tr was 100 ps and the data rate was 1 Gbps.
- the measurement result of the transmission characteristic (S21) is shown in FIG. 9, and the measurement result of the eye pattern is shown in FIG.
- the differential impedance Z diff when the two channels of signals ch1 and ch2 are input to the flexible flat cable manufactured as an example is 94 ⁇ , which satisfies the target 100 ⁇ ⁇ 10%. confirmed.
- the transmission characteristic (S21) of the flexible flat cable manufactured as an example was confirmed to be ⁇ 10 dB / m in the case of a signal of 1 GHz, and the flexible flat cable manufactured as a comparative example. Compared with the results obtained.
- the value of the transmission characteristic (S21) of ⁇ 10 dB / m is the same as the target value of the transmission characteristic (S21) in HDMI (High Definition Multimedia Interface).
- the eye pattern also exhibited a good opening, and it was confirmed that there was no loss of electrical characteristics.
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Abstract
Description
10 ケーブル本体
11 導体
12 第1の絶縁材
13 第2の絶縁材
14 第1のグラウンド箔
15 第2のグラウンド箔
16 第1のシールド材
17 第2のシールド材
20 金属層
21 アクリル系接着層
22 剥離紙
30 金属材
31,35 導電性接着層
32,33 金属層
34 ポリエチレンテレフタレートフィルム
41 第1の不織布
42 第2の不織布
43,44 両面接着層
以下、本発明を適用したフレキシブルフラットケーブルの具体的な実施例について、実験結果に基づいて説明する。
Claims (12)
- 所定のピッチで配列された複数の導体を含むケーブル本体と、
上記ケーブル本体に設けられたグラウンド層と、
上記ケーブル本体の表面を被覆するように設けられたシールド材とを備え、
上記シールド材は、複数層の金属層の間に第1の導電性接着層を介装させて形成された金属材を有し、最外層の金属層のうち一方の金属層が上記グラウンド層と導通されていること
を特徴とするフラットケーブル。 - 上記金属材は、2層の上記金属層の間に上記第1の導電性接着層を介装させて形成されていること
を特徴とする請求項1記載のフラットケーブル。 - 上記シールド材は、第2の導電性接着層を介して上記最外層の金属層のうち一方の金属層が上記グラウンド層と導通されていること
を特徴とする請求項1又は請求項2記載のフラットケーブル。 - 上記第1の導電性接着層は、厚みが10μm~50μmであること
を特徴とする請求項1乃至請求項3のうちいずれか1項記載のフラットケーブル。 - 上記第1の導電性接着層は、異方性導電接着剤であること
を特徴とする請求項1乃至請求項3のうちいずれか1項記載のフラットケーブル。 - 上記金属層は、金属箔、金属蒸着層、又は金属メッキ層のいずれかとして形成されていること
を特徴とする請求項1乃至請求項3のうちいずれか1項記載のフラットケーブル。 - 上記金属層は、銀を含むこと
を特徴とする請求項1乃至請求項3のうちいずれか1項記載のフラットケーブル。 - 上記金属層は、厚みが0.05μm~0.5μmであること
を特徴とする請求項1乃至請求項3のうちいずれか1項記載のフラットケーブル。 - 上記シールド材は、上記金属材の一方の面に積層された保護基材を有すること
を特徴とする請求項1乃至請求項3のうちいずれか1項記載のフラットケーブル。 - 上記保護基材は、ポリエチレンテレフタレートであること
を特徴とする請求項9記載のフラットケーブル。 - 上記ケーブル本体の伝送路幅と略同幅を有し、当該ケーブル本体を両側から挟装するように設けられた絶縁材としての空気含有層を備え、
上記空気含有層は、上記ケーブル本体の伝送路幅と略同幅に切断された不織布を用いて構成されており、
上記シールド層は、上記空気含有層の表面を被覆し、且つ、上記ケーブル本体の両端の端子部における上記グラウンド層と導通するように設けられていること
を特徴とする請求項1乃至請求項10のうちいずれか1項記載のフラットケーブル。 - 上記不織布は、難燃性を有するものであること
を特徴とする請求項11記載のフラットケーブル。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020107015719A KR101160497B1 (ko) | 2008-01-17 | 2009-01-13 | 플랫 케이블 |
US12/863,379 US8440911B2 (en) | 2008-01-17 | 2009-01-13 | Flat cable |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2008007948A JP5213106B2 (ja) | 2008-01-17 | 2008-01-17 | フラットケーブル |
JP2008-007948 | 2008-03-28 |
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WO2009090927A1 true WO2009090927A1 (ja) | 2009-07-23 |
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PCT/JP2009/050269 WO2009090927A1 (ja) | 2008-01-17 | 2009-01-13 | フラットケーブル |
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US (1) | US8440911B2 (ja) |
JP (1) | JP5213106B2 (ja) |
KR (1) | KR101160497B1 (ja) |
TW (1) | TWI409985B (ja) |
WO (1) | WO2009090927A1 (ja) |
Families Citing this family (15)
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JP5293661B2 (ja) * | 2010-03-23 | 2013-09-18 | 住友電気工業株式会社 | フラットケーブル |
US8841560B1 (en) * | 2010-11-17 | 2014-09-23 | Dawn VME Products | Backplane slot interconnection system, method and apparatus |
JP5506647B2 (ja) * | 2010-12-14 | 2014-05-28 | 東京特殊電線株式会社 | フレキシブルフラットケーブル |
US8859904B2 (en) | 2011-02-08 | 2014-10-14 | Hitachi Metals, Ltd | Flexible flat cable |
KR20190107768A (ko) | 2011-11-24 | 2019-09-20 | 타츠타 전선 주식회사 | 차폐 필름, 차폐 프린트 배선판, 및 차폐 필름의 제조 방법 |
FR3011326B1 (fr) * | 2013-10-02 | 2016-04-01 | Soc Fr Detecteurs Infrarouges Sofradir | Circuit imprime flexible a faible emissivite |
WO2016179606A1 (en) * | 2015-05-07 | 2016-11-10 | Wilson Electronics, Llc | Flat coaxial cable |
KR20170123747A (ko) * | 2016-04-29 | 2017-11-09 | 삼성전자주식회사 | 차폐 부재 및 그를 포함하는 전자 장치 |
TWM545344U (zh) * | 2016-12-12 | 2017-07-11 | 品威電子國際股份有限公司 | 軟性排線結構和軟性排線電連接器固定結構 |
KR102060739B1 (ko) * | 2017-07-03 | 2019-12-31 | (주)잉크테크 | 전자파 차폐 기능을 갖는 회로기판과 이의 제조방법 및 이를 이용한 평판 케이블 |
JP7067275B2 (ja) * | 2018-05-30 | 2022-05-16 | 住友電気工業株式会社 | シールドフラットケーブル |
TWI696197B (zh) | 2018-11-21 | 2020-06-11 | 貿聯國際股份有限公司 | 高頻軟性扁平排線 |
KR20200092031A (ko) * | 2019-01-24 | 2020-08-03 | 주식회사 아모그린텍 | 플렉서블 케이블 점퍼 구조체 및 이를 제조하는 방법 |
CN109979670B (zh) * | 2019-04-15 | 2020-09-25 | 嘉兴市航旗电器股份有限公司 | 一种适用于hdmi接口的高速传输线缆及其加工工艺 |
CN112885527B (zh) * | 2019-11-30 | 2022-05-27 | 英业达科技有限公司 | 串行先进技术安装线缆 |
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Also Published As
Publication number | Publication date |
---|---|
TWI409985B (zh) | 2013-09-21 |
KR20100102662A (ko) | 2010-09-24 |
US8440911B2 (en) | 2013-05-14 |
KR101160497B1 (ko) | 2012-06-28 |
JP2009170291A (ja) | 2009-07-30 |
US20110100673A1 (en) | 2011-05-05 |
JP5213106B2 (ja) | 2013-06-19 |
TW200941818A (en) | 2009-10-01 |
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