ANTENNA DEVICE AND MANUFACTURING METHOD THEREOF

In to the elucidation of the in the embodiment, each layer, foil or sheet layers, foil or seat "on (on)" or "(under) below" described to be formed in the case, "on (on)" and "(under) below" is "direct (directly)" or "(indirectly) via other components" includes both the formation. In addition reference is a reference drawing for each element of or under the described as follows. In addition attached drawing to aid in understanding the like display exaggerated size interval can be, in addition to reduced by a description of the contents in the field described conventional shown can be omitted.

In the embodiment according to fig. 1 and 2 is shown in cross-section conductive magnetic of the composite sheet are disclosed.

The reference also 1, in the embodiment according to conductive magnetic composite sheet of a magnetic sheet (100), conductive layer number 1 (210) and conductive layer number 2 (220) comprises.

The reference 2 also, in the embodiment according to conductive magnetic composite sheet adhesive layer number 1 (310) and number 2 adhesive layer (320) can be further.

Said conductive magnetic composite sheet conductive layer magnetic sheet it became total composite sheet are disclosed.

For example, be a magnetic composite sheet said copper laminated magnetic composite sheet.

Said magnetic sheets (100) includes a magnetic component.

Said magnetic component is ferrite (Ni-a Zn-based, Mg-a Zn-based, such as Mn-a Zn-based ferrite) magnetic oxide such as; it ladles and with (permalloy), state (sendust) [...], magnetic metal such as Fe a-Si-a Cr alloy and Fe a-Si - nano [khu with [su mask; or be a composite components. E.g., said magnetic component is Fe a-Si provided Al has an alloy composition comprising [...][...] be.

Said magnetic sheets (100) is be a flexible magnetic sheets. Said magnetic sheets (100) includes a polymer type magnetic sheets (polymeric magnetic sheet, PMS) implementation being. Specifically, said magnetic sheets (100) including said magnetic component comprises a magnetic powder (110) binder resin (120) can be a. More specifically, said magnetic sheets (100) includes a magnetic powder (110) binder resin (120) to reduce the noise containing binder can be cured sheet.

Said magnetic powder (110) such an oxide ferrite magnetic powder; it ladles and with, state [...], Fe a-Si-a Cr alloy and Fe a-Si - [khu with [su mask nano metal magnetic powder; or can be composite powder.

In the range of about 3 nm to about 1 mm diameter of magnetic powder can be said. More specifically, said magnetic powder particle size is about 1 - 300 micro m, about 1 - 50 micro m or about 1 - 10 micro m can be in the range of.

Said binder resin (120) can be include the curable resin with. Specifically, said binder resin is a photocurable resin, a thermosetting resin and a thermoplastic resin achieves higher heat resistance and/or can, preferably can be a thermoset resin.

The cured to which an adhesive may exhibit, reactable, at the time of knows sprouting, isocyanate, hydroxyl, carboxyl or amide such as by heat-curing possible functional groups or site or include one or more of; or for epoxide (epoxide), cyclic ethers (cyclic ether) to, sulfide (sulfide) to, acetal (acetal) or lactone (lactone) such as active energy curing possible functional groups or sites such as by including one or more can be resin.

Specifically, curable resins can be said, such as functional groups or sites described above at least one polyurethane resin, acrylic resin, polyester resin, isocyanate resin or epoxy resin such as exemplified but, the one number are not disclosed.

As an example, said binder resin is a polyurethane resin, and epoxy resin can be cured isocyanate-number.

Specifically, said magnetic sheets (100) includes a magnetic powder (110) oxide as magnetic powder, metal magnetic powder, or composite powder and, binder resin (120) as a polyurethane resin, an epoxy resin or the like can be. In addition, curing said magnetic sheets can be an isocyanate as number.

More specifically, about 1 - 300 micro m said magnetic sheet as said magnetic powder having a particle size state powder [...], number average molecular weight of about 10,000 - 50,000 g/mol having polyurethane resin, epoxy resin having a number average molecular weight of about 10,000 - 50,000 g/mol, and isocyanate curing can be a number.

In addition, said magnetic sheets (100) is a rust number (corrosion inhibitor) can be. As an example of organic and inorganic rust number is cited a number rust rust said number.

Said organic rust number specific example, amines, urea (urea), the [me the cop toe it cuts trillion motes oh it will doze (MBT), benzotriazole, sebacic acid, aldehydes, heterocyclic nitrogen compounds, sulfur-containing compounds, acetylenic compounds, ascorbic acid, succinic acid, trip it burns it pushed, such as caffeine is cited.

More specifically, said rust number is benzyl N - - N, N - bis [(3, 5 - dimethyl - 1H - pyrazole - 1 - yl) methyl] amine, 4 - (1 - methyl - 1 - phenylethyl) - N - [4 - (1 - methyl - 1 - phenylethyl) phenyl] aniline, tris (benzimidazole - 2 - ylmethyl) amine, N - (2 - it ladles, the [phyu reel) - p - [...], N - (5 - chloro - 2 - it ladles, the [phyu reel) - p - [...], N - (5 - nitro - 2 - it ladles, the [phyu reel) - p - [...], N - (5 - methyl - 2 - it ladles, the [phyu reel) - p - [...], N - (d roh methyl piperidinyl) - 3 - [(pyridyl [...]) amino] moving cystine, [ethylene - 3 - (3, 5 - di - tert - butyl - 4 - substituted phenyl the agent) propionate] methane tetrakis, such as amine-based rust implementation being number or a mixture of these.

50 Weight % or more magnetic powder said magnetic sheets, or 70 weight % or more can be amount. For example, magnetic powder 50 - 95% by weight of said magnetic sheets, 70 - 95% by weight, 70 - 90% by weight, 75 - 90% by weight, 75 - 95% by weight, 80 - 95% by weight, or 80 - 90% by weight contains an amount of can be.

In addition said magnetic sheet 5 - 40% by weight binder resin, 5 - 20% by weight, 5 - 15% by weight, or 7 - 15% by weight can be contains an amount of.

In addition said magnetic sheet number 1 - 10% by weight said a rust, 1 - 8% by weight, or 3 - 7% by weight of polystyrene can be.

According to one example, magnetic powder 80 - 90% by weight of said magnetic sheets, number 1 - 8% by weight binder resin containing 5 - 15% by weight temperature and can be.

In addition, 6 - 12% by weight based on the total weight of said binder resin magnetic sheets of polyurethane resin, 0. 5 - 2% By weight of isocyanate curing number and 0. 3 - 1. 5% By weight of epoxy resin can be.

Said magnetic sheets (100) has a thickness of about 10 - 3000 micro m implementation being. More specifically, said magnetic sheet thickness is about 10 - 500 micro m, about 40 - 500 micro m, about 40 - 250 micro m, about 50 - 250 micro m, about 50 - 200 micro m, or about 50 - 100 micro m implementation being.

Said magnetic sheet having a magnetic permeability of the AC current having a frequency of about 100 - 300 3MHz, 6. 78MHz AC current having a frequency of about 80 - 270 has a magnetic permeability of the, 13. 56MHz AC current having a frequency of about 60 - 250 may have of permeability.

Or, said magnetic sheet having a magnetic permeability of the AC current having a frequency of about 190 - 250 3MHz, 6. 78MHz AC current having a frequency of about 180 - 230 has a magnetic permeability of the, 13. 56MHz may have a magnetic permeability of about 140 - 180 having a frequency of alternating current.

In addition, said magnetic sheets can be applied to various devices may have flexibility. For example, 10,000 times in said magnetic sheet bending test (MIT folding test) MIT 90° 35 rpm and under controlled conditions and is even after bending thereof can. In addition, said magnetic sheet bending test in about 10% hereinafter after 10,000 times bending under controlled conditions and polyetherether MIT 90° 35 rpm, or about 5% hereinafter implementation being.

In addition, said magnetic sheets may have heat resistance capable of withstanding high heat conditions. For example, about 30 minutes when about 150 °C said magnetic sheets to be heat-treated, about 25% hereinafter, 15% hereinafter, 10% hereinafter, or about 5% hereinafter may have of volume change. In addition, about 30 minutes when about 150 °C said magnetic sheets to be heat-treated, about 25% hereinafter, 15% hereinafter, 10% hereinafter, or about 5% hereinafter magnetic permeability of the reduction may have.

In addition, 200 seconds to a temperature rise at a constant rate from 30 °C after 240 °C, 100 seconds at a constant rate until its temperature from 130 °C 240 °C under conditions when said thermal magnetic sheet 2 times, said magnetic sheets and permeability change 25% hereinafter thickness variations, 15% hereinafter, or about 10% hereinafter implementation being. Specifically, when said heat treatment condition 2 times, said magnetic sheets and permeability change 5% hereinafter thickness variations, implementation being 3% hereinafter more specifically.

In addition, various environment said magnetic sheets can withstand temperatures may have refractory chemical resistance. For example, when 10 minutes immersion in hydrochloric acid of about 2N said magnetic sheets, about 10% hereinafter, or about 5% hereinafter may have mass of change. In addition, when 10 minutes immersion in hydrochloric acid of about 2N said magnetic sheets, about 10% hereinafter, or less than about 5% hereinafter may have. In addition, when 10 minutes immersion in hydrochloric acid of about 2N said magnetic sheets, about 10% hereinafter, or about 5% hereinafter magnetic permeability of the reduction may have.

Specifically, when change of the magnetic permeability of the 2N hydrochloric acid solution and 5% hereinafter 30 minutes immersion thickness variations and 5% hereinafter, when 30 minutes immersion 2N sodium hydroxide solution 5% hereinafter may have thickness variations and 5% hereinafter magnetic permeability of the change.

More specifically, thickness variations and change of the magnetic permeability of the hydrochloric acid solution 2N 30 minutes immersion when 3% hereinafter and 3% hereinafter, when 30 minutes immersion 2N sodium hydroxide solution may have thickness variations and 3% hereinafter change magnetic permeability of 3% hereinafter.

In addition, said magnetic sheets can withstand corrosion resistance may have various in a corrosive environment. For example, KS D 9502 a salt water spraying test based on magnetic sheet 9. 8 Or more may have a rating number (rating number). Rating number (rating number) indicating an effective area ratio of corrosion by evaluation method as method corrosion area and the value of 0 - 10 is divided into a substrate.

In addition, about 2N solution of NaCl 10 minutes immersion when said magnetic sheets, about 10% hereinafter, or about 5% hereinafter may have mass of change. In addition, about 2N solution of NaCl 10 minutes immersion when said magnetic sheets, about 10% hereinafter, or about 5% hereinafter magnetic permeability of the reduction may have.

In addition, said magnetic sheets may have a high tensile strength.

Said conductive layer (210, 220) is said magnetic sheets (100) of at least one of disposed thereon.

I.e., said conductive layer (210, 220) is said magnetic sheets (100) is arranged on the one side of and/or other surface.

The, as shown in fig. 1, said conductive layer (210, 220) without the layer bonding said magnetic sheets (100) can be directly joined. The, said conductive layer (210, 220) is said magnetic sheets (100) can be in direct contact with the surface of.

The, said conductive layer (210, 220) is said magnetic sheets (100) of a binder resin (120) can be directly joined. Specifically, said conductive layer (210, 220) is said binder resin (120) can be directly bonded constituting thermosetting resins.

Said conductive layer (210, 220) can be conductive material. E.g., said conductive layer can be conductive metal. I.e., said conductive layer is a seed layer disclosed. E.g., said conductive layer may comprise copper, nickel, gold, is, at least one metal selected from the group consisting zinc and tin can be 1. Specifically, said conductive layer be a metal foil. More specifically, be said conductive layer is a copper foil.

Said conductive layer thickness is about 6 - 200 micro m may be, more specifically about 10 - 150 micro m, about 10 - 100 micro m, or about 20 - 50 micro m implementation being.

As shown in fig. 2, said adhesive layer (310, 320) is said magnetic sheets (100) on said conductive layer (210, 220) can be interposed between. I.e., said composite sheet said magnetic sheets (100) and said conductive layer (210, 220) adhesive layer which is interposed between (310, 320) can be further comprises, the adhesive layer said magnetic sheets (100) and said conductive layer (210, 220) can be in direct contact with.

The, said adhesive layer said conductive layer capable of said magnetic sheet. Said adhesive layer thickness is about 0. 1 - 20 Micro m implementation being. More carefully, said adhesive layer having a thickness of about 0. 1 - 10 Micro m, about 1 - 7 micro m, or about 1 - 5 micro m implementation being.

Said adhesive layer comprises a thermosetting resin or a thermoplastic resin achieves higher heat resistance. Specifically, epoxy resin or the like can be said adhesive layer.

By thermal curing to said adhesive layer, said adhesive layer and said magnetic sheets such as returning. The, said adhesive layer may have high heat-resistance and adhesion.

In addition, said adhesive layer thermal curing resin may have high because it includes a cinnamate. Accordingly, performing the function of said adhesive layer for protecting said magnetic sheets can be. I.e., when the conductive layer is etched by said etching solution, said etching solution from said adhesive layer for protecting said magnetic sheets can be.

the conductive layer is directly or through said magnetic sheets can be bonded together by a bonding face between the adhesive layer bonding force. Specifically, said conductive layer or adhesive layer is constructed thermal curing resin cures joined to the top of said magnetic sheets, even if thermal oxide is produced, and said conductive layer between said magnetic sheets as a minor component thereof can is not lowered.

Preferably, said conductive layer and said magnetic sheets abruption intensity between 0. Be a 6 kgf/cm or more. In addition, said conductive magnetic composite sheet 200 seconds after 240 °C temperature up at a constant rate from 30 °C, 100 seconds at a constant rate until its temperature from 130 °C 240 °C under conditions periodical repetition 2 after thermal oxide, said conductive layer and said conductive magnetic composite sheet between said magnetic sheets 0. Peeling strength may have 6 kgf/cm or more.

In addition, periodical repetition 2 when said heat treatment conditions, the rate of change of said conductive layer between said magnetic sheets peel strength (lowering rate) 20% hereinafter, 15% hereinafter, or implementation being 10% hereinafter.

Accordingly, in the embodiment according to reflow soldering (soldering) such as conductive magnetic composite sheet (reflow) process even if a process, consisting of magnetic permeability and thickness so as to move, magnetic sheets and the conductive layer and not result in peeling as predetermined.

In the embodiment according to magnetic composite sheet, said conductive layer after said magnetic sheet number by number magnetic sheet high pressure liquid coolant tank lining can be disclosed.

First magnetic powder and the binder resin molding seat from dry magnetic sheet number and drying high pressure liquid coolant therein.

Drying said magnetic sheet (i) magnetic powder dispersed in binder resin and solvent in the slurry tank number; and (ii) said forming a sheet by using a suspension slurry after drying by number bath including method can be disclosed.

In a more specific example, first magnetic powder polyurethane resin, an epoxy resin and cured with isocyanate number added to the solvent, by dispersing a disperser (planetary mixer, homo mixer, such as no-a bead mill) of about 100 - 10, 000 cPs number slurry having a viscosity of high pressure liquid coolant therein. Then, said slurry is dried magnetic sheets coated on a carrier film screen surface coater by means of seal and disposed therein. Drying said magnetic sheet thickness to be formed according to regulate the velocity and temperature, dryer after molding sheet number solvent through a stand-alone tank and winding polymer type magnetic sheets to 1308. (PMS) number.

With reference to fig. 3, said drying magnetic sheets (101) a positive roll-to-roll process performed number of pore-forming, including magnetic powder and a binder resin slurry coater (500) carrier film (400) and dried coated on dried magnetic sheets (101) number can be a high pressure liquid coolant. the dry magnetic sheets (101) is uncured or semi-state binder resin (121) can be included.

Then, said drying magnetic sheets woven conductive layer disposed thereon.

Said conductive layer conducting foil may be, specifically metal foil may be, more specifically be a copper foil.

Said drying magnetic sheets and said conductive layer lining by heat and pressure applied.

The, pressure applied to said magnetic sheet and said conductive layer about 1 - 100 mpa implementation being. In addition, when the temperature of the magnetic sheet and said conductive layer lining said about 100 - 300 °C implementation being. In addition, conductive layer said magnetic sheet and said lining process is about 0. 1 - 5 Can be on for.

During the process of said lining, said binder resin contained in the magnetic sheets can be cured using heat. Accordingly, as shown in fig. 4, binder resin cures have been completed magnetic sheets (100) and further, said conductive layer (210, 220) is said magnetic sheets (100) can be joined. Said conductive layer (210, 220) by the thermal curing to said magnetic sheets (100) is joined, said magnetic sheets can be excellent binder and said conductive layer. In particular, magnetic sheet and said conductive layer and said binder resin is cured so that the pressing can be by performing a mask layer as a minor component. The, said magnetic sheet and said conductive layer by a bonding layer can be joined without used for hereinafter.

Specifically, said returning process is roll-to-roll process or the step can be performed by.

As shown in fig. 5, said returning process is roll-to-roll process can be performed. Roll-to-roll process, curing of the binder resin not completed in said dry magnetic sheets (101) woven conductive layer (210, 220) are laminated roll (600) through the base. The, said roll itself is heated, said heat and pressure roll said laminate can be applied simultaneously. I.e., said roll by said conductive layer and said magnetic sheets, fabric continuously applied. As a result, binder resin cures have been completed magnetic sheets (100) and further, said conductive layer (210, 220) is said magnetic sheets (100) can be joined.

Said roll-to-roll process, said roll temperature of about 100 - 300 °C implementation being. In addition, the pressure in the roll about 1 - 100 mpa said implementation being. In addition, about 1 - 20 can be used in a process returning said roll pair. In addition, moving velocity of said laminate about 0. 1 - 10 M/min implementation being.

As shown in fig. 6, process of placing said returning process can be spectroscopically. Specifically, dry magnetic sheets stacked on said conductive layer, such a stack laminated back to the various stages. Then, the various stages stacked magnetic sheets and the conductive layer and a seal includes pressure heat treated substrate. As a result, binder resin cures have been completed magnetic sheets (100) and further, said conductive layer (210, 220) is said magnetic sheets (100) joined to laminates (10) can be achieved at a.

In said step, a heat treatment is about 100 - 300 °C implementation being. In addition, the pressure exerted on said a laminated multi-stage implementation being about 1 - 100 mpa. In addition, heat and pressure applied time is about 0. 1 - 5 Can be time.

As shown in fig. 7, conductive layer (210, 220) primer layer (311, 321) are formed, after drying magnetic sheets (101) electrically layer (210, 220) is said primer layer (311, 321) can be bonded to each other through.

said primer layer can be heat curable resin. Said heat-curable resin one example of an epoxy resin or the like used primer layer is cited.

Said primer layer thickness is about 0. 1 - 20 Micro m implementation being. More carefully, said primer layer thickness is about 1 - 7 micro m implementation being.

Said primer layer is formed conductive layer laminated on one or two surfaces of said dry magnetic sheets. The, drying said magnetic sheet disposed thereon to be in direct contact with said primer layer. In addition, multiple coating be a cure or binder included in said drying magnetic sheets.

Then, as shown in fig. 8, dry magnetic sheets and said conductive layer lining said encoded by heat and pressure. the lining and said conductive layer drying magnetic sheets can be disclosed. The, total can be said heat and pressure conditions, specifically described roll-to-roll process or the step prior to the illustrated prior thereto by temperature and pressure conditions can be performed.

As a result, returning in curing of the binder resin so as completed magnetic sheets (100) can be formed. In addition cured primer layer upon said lining, said magnetic sheet and said conductive layer by means of said primer, can be adhered together. I.e., said primer layer and said adhesive layer which together and said magnetic sheets conductive layer can be formed. The, said adhesive layer (310, 320) through magnetic sheets (100) electrically layer (210, 220) is bonded to a conductive magnetic composite sheet can be achieved.

According to one example, said adhesive layer (310, 320) reduces the heat curable resin below, may have high cinnamate. Thus, when the conductive layer is etched by said etching solution, said magnetic sheets protecting function can be perform magnetic powder contained in the protective layer.

Figure 9 shows a cross-sectional drawing in the embodiment according to one antenna element of a timing also are disclosed.

In the embodiment according to the antenna element magnetic sheets (100); said magnetic sheets (100) are disposed on one side of the antenna (230); said magnetic sheets (100) surface disposed on the other side of the wiring pattern (240); and said magnetic sheets (100) via number 1 through (251) and, the via said number 1 (251) is said antenna pattern (230) and an end of said wiring pattern (240) of an end-coupled with each other.

In the embodiment according to the antenna element magnetic sheets (100) of a groove formed, number 1 terminal patterns (271), and number 2 terminal patterns (272) can be further comprises, said magnetic sheets (100) number 2 through via (252) can be further comprises, according to their placement position and connection configuration permits design of antenna element.

In addition, in the embodiment according to the antenna element magnetic sheets (100) surface disposed on the other side of the additional antenna patterns can be. I.e., in the embodiment according to the antenna element magnetic sheets (100) may have both on both sides of the antenna pattern. In addition, herewith in the embodiment according to the antenna element number 1 terminal patterns, and number 2 terminal patterns can be further comprises, passing through the sheet further comprises a number 2 via said magnetic can be, according to their placement position and connection configuration permits design of antenna element.

also 10A to 10c also illustrates the plane view in different in the embodiment according to antenna element are disclosed (pattern gum display is a front pattern and, [...] content in accordance with the rear pattern and, via (via) is represented by the circle corresponding to the are disclosed).

With reference to the hereinafter drawing, more particularly configuration incorporated herein disclosed.

One part protrudes from the body, with reference to the 10a also, said in the embodiment according to the antenna element said magnetic sheets (100) disposed on one side of number 1 terminal patterns (271); and said magnetic sheets (100) number 2 through via (252) and further comprises a, the via said number 2 (252) is said number 1 terminal patterns (271) and said wiring pattern (240) can be connected to the other end of.

In addition, said in one embodiment, said antenna element is said magnetic sheets (100) disposed on one side of number 2 terminal patterns (272) and further comprises, the antenna pattern (230) of respectively said number 2 terminal patterns (272) can be connected.

In addition, said in one embodiment, said number 1 terminal patterns (271) and said number 2 terminal patterns (272) can be disposed adjacent to each other.

According other embodiments, with reference to the 10b also, said in the embodiment according to the antenna element said magnetic sheets (100) disposed on the other side of number 1 terminal patterns (271) and further comprises, said number 1 terminal patterns (271) is said wiring pattern (240) can be connected to the other end of.

In addition, said in another embodiment, said antenna element is said magnetic sheets (100) disposed on the other side of number 2 terminal patterns (272); and said magnetic sheets (100) number 2 through via (252) and further comprises a, via said number 2 (252) is said number 2 terminal patterns (272) and said antenna pattern (230) can be connected to the other end of.

In addition, said in another embodiment, said number 1 terminal patterns (271) and said number 2 terminal patterns (272) can be disposed adjacent to each other.

Another part protrudes from the body, with reference to the 10c also, said in the embodiment according to the antenna element said magnetic sheets (100) disposed on the other side of number 1 terminal patterns (271) and further comprises, said number 1 terminal patterns (271) is said wiring pattern (240) can be connected to the other end of. The, said antenna element is said magnetic sheets (100) disposed on one side of number 2 terminal patterns (272) and further comprises, said number 2 terminal patterns (272) is said antenna pattern (230) can be connected to the other end of.

In the embodiment according to antenna element, said antenna pattern and comprised of a conductive wiring pattern, said antenna pattern is directly bonded on one surface of said magnetic sheets and, said magnetic sheets can be directly bonded surface of said module.

In addition, vertically extending through the via hole including said magnetic sheet can be. The inner wall or said number 1 via holes may be plated, conductive material filled or, solder or the like can be inserted via conductive rod constituting said number 1. As an example, magnetic sheet number 1 and said vertically extending through the via hole, the via hole can be plated inner wall constituting said number 1 via said number 1.

Said magnetic sheet, as aforementioned, said binder resin and magnetic powder can be dispersed in a binder resin.

In addition, AC current having a frequency of said magnetic sheet having a magnetic permeability of 100 - 300 for 3MHz, 6. 78MHz for alternating current having a frequency of 80 - 270 has a magnetic permeability of the, 13. 56MHz of permeability for alternating current having a frequency of 60 - 250 may have.

The common antenna in the embodiment according to the previous magnetic sheets described magnetic sheets may have substantially the same construction and composition, by substantially the same method in addition number bath 1308.

Said antenna pattern is planar coil type, may have shape or spiral shape.

A hollow cylindrical member in Figure 14, in the embodiment according to antenna element (20) antenna pattern due to the current through the electromagnetic signals (50) can be generate.

Said electromagnetic signals (50) antenna element (20) and one or more external terminal (40) pair of between nephrophathy.

The in the embodiment according to the antenna element, a conductive layer or antenna pattern layer is directly formed on the insulating substrate such as polyimide without magnetic sheets by reducing thickness provides a number can be pore-simplifying, NFC has excellent magnetic property, can be used for composite WPC and MST. In addition, polymer type magnetic sheets can be using minimal effect on strength, roll-to-roll process can be improved processability by dielectric layer number.

In particular, in the embodiment according to the antenna element an antenna wiring pattern different magnetic sheets and arranged on the opposite side, passing through the sheet via the deficiency through the soft magnetic pattern, such as an upper wiring to lift truck stop additional processing is not required in the efficiency of work can be increased. In addition, in the embodiment according to the antenna element such as wiring insulation coating of thickness increase according to prevent disconnection of the antennas can be greater than the resolution of.

In the embodiment according to the antenna element of a manufacturing method (1) one aspect of magnetic sheets forming a surface of a conductive layer and each conductive layer number 1 and number 2; (2) said magnetic sheets is formed at said number 1 connecting the conductive layer and conductive layer via said number 2 number 1; (3) said number 1 conductive layer is etched to forming antenna pattern including patterns; and (4) said number 2 pattern by etching the conductive layer and including patterns, the antenna pattern is connected thereto an end of said said number 1 via an end and said wiring pattern.

A binder resin by molding magnetic powder is dispersed seat from said magnetic sheets number bath 1308.

In the embodiment according to antenna element manufacturing method used in the previous magnetic sheets described magnetic sheets may have substantially the same construction and composition, by substantially the same method in addition number bath 1308.

In addition, said step (2) is (2 - 1) said magnetic sheets, said number 1 conductive layer and conductive layer forming a via hole through said number 2 number 1; and (2 - 2) via said number 1 number 1 by plating the inner wall of the via hole can be.

Also in the embodiment according to Figure 13 shows a number bath the decoded signal timing to antenna elements 11 also are disclosed.

First, as shown in fig. 11, via holes passing through the sheet-copper laminated magnetic composite (260) formed therein. Said via holes (260) magnetic sheet (100) and conductive layer (210, 220) penetrates. For the via said range of e.g. 100 - 300 micro m, or may have micro m diameter range of 120 - 170.

Then, as shown in fig. 12, said via holes (260) by an inner face of a plating layer vias (250) can be formed. The plating mold vias, vias can be formed form a large area detector. I.e., the vias are said plating layer on the molding, can be efficiently for hereinafter can be formed. Or, after filling said via holes can be formed at in conductive powder sintering. Or, solder or a conductive rod or the like is inserted in said via holes can be formed at.

Then, said conductive layer (210, 220) spreading the mask pattern formed thereon cooper, also 13 as shown, mask pattern by conductive layer (210) is selectively etched, antenna pattern (230) including a patterns formed therein. In this manner other conductive layer (220) is selectively etched to form a wiring pattern (240) can be a including patterns. The conductive layer (210, 220) is etched antenna patterns can be obtained by including the terminal wiring pattern can be in addition. Preferably said magnetic sheets thus improved chemical resistance, said thickness of said magnetic sheets thereof can and less variation in the etching plasma.

In addition, binder resin (or adhesive layer) said antenna pattern and said wiring pattern of said magnetic sheets is closely attached to a substrate. I.e., binder resin (or adhesive layer) of said magnetic sheets by heat curing process, said antenna pattern and said wiring pattern is bonded. Accordingly, said etched, etching liquid between said conductive line patterns on said magnetic sheets (or adhesive layer) penetrate into the tropics. As a result, said antenna patterns and said wiring patterns can be said magnetic sheet joined to the joint force.

Hereinafter, more specific in the embodiment are illustratively described as follows.

In the embodiment of are as hereinafter used materials include a below:

[...] - state powder: C1F - 02A, Crystallite Technology

- Polyurethane resin:UD1357, die ㈜ reason tax car industry

- Isocyanate curing number: isophorone diisocyanate, Sigma non-Aldrich

- An epoxy resin: bisphenol A type epoxy resin (epoxy equivalent weight=189g/eq), Epikote^TM 828, Japan Epoxy Resin

In the embodiment 1: antenna element number bath

Step 1) magnetic powder slurry number bath

42. 8 Parts by weight of powder state [...], 15. 4 Parts by weight of a polyurethane resin dispersion (polyurethane resin 25% by weight, 2 - butane on 75% by weight), 1. 0 Parts by weight of isocyanate curing number dispersion (isocyanate curing number 62% by weight, n - butyl acetate 25% by weight, 2 - butane on 13% by weight), 0. 4 Parts by weight of epoxy resin dispersion (an epoxy resin 70 weight %, n - butyl acetate 3% by weight, 2 - 15% by weight on butane, toluene 13% by weight), and 40. 5 Parts by weight of toluene (planetary mixer) about 2 hours at a rate of about 40 provided 50 rpm planar [...] mixer mixing, number magnetic powder slurry was high pressure liquid coolant.

Step 2) number of magnetic sheets bath

Magnetic powder prepared by the number prior carrier film coater coating by screen surface on slurry, dry to dry at a temperature of about 110 °C rear magnetic sheets. About 60 minutes at a temperature of about 170 °C said drying magnetic sheets about 9 mpa pressure compression curing hot press process a final magnetic sheet are obtained.

Step 3) of the composite sheet number bath copper laminated magnetic

Thickness of copper foil on one surface of an epoxy resin coating about 37 micro m thickness of the primer layer about 4 micro m weight percent. Said magnetic sheets are arranged on both sides of said copper foil, said magnetic sheets adapted to be positioned between said primer layer and said copper foil laminate weight percent. Then, a pressure of about 60 minutes at a temperature of about 170 °C said laminate about 9 mpa hot compressing the primer layer by curing composite sheet-copper laminated magnetic number was high pressure liquid coolant.

Step 4) antenna element number bath

The drill, said magnetic copper laminated composite sheet, about 0. A plurality of via holes having a diameter of 15 mm weight percent. Then, copper plating copper plating layer through via holes within said weight percent. Both upper and lower surface of said plating layer on the Cu foil was acting via the connection. Then, said mask pattern formed on the upper and lower surface of the composite sheet-copper laminated magnetic, through etching process, said copper foil layer from the-gate. Accordingly, an upper pattern and lower patterns weight percent.

Test example

The steps of said in the embodiment 1 (2) prepared by the magnetic sheets in number, step (3) magnetic composite sheet and copper laminated prepared by the number in step (4) hereinafter according to antenna element is prepared by the number in his testing procedure.

1. Permeability measurement

Impedance circuit structure through, magnetic sheet permeability and investment loss were measured. Table 1 result to a shop window.

A hollow cylindrical member in said table 1, in the embodiment according to two band magnetic sheet 3 in both magnetic permeability transmission option.

2. Measuring - reflow heat resistance test

Magnetic sheets, copper laminated magnetic composite sheet and antenna elements disposed on the oven, at a constant speed from increasing temperature until after 30 °C 240 °C 200 seconds, 100 seconds to the heat treatment conditions to reduce the temperature at a constant rate from 130 °C 240 °C (also 15 reference) conducting the reflow test 2 times. Then, magnetic sheets, copper laminated magnetic composite sheet and antenna element thickness variations, permeability change and bonding force variations were measured.

As a result, subsequent to a blister (blister) is observed on the surface of the magnetic sheets 2 times both reflow test not been provided. In addition, reflow test 2 times thickness of the sheeting after it has been determined that both magnetic and permeability change less than 5%. In addition, copper magnetic sheets where the peel strength after reflow test 2 times with both 0. It has been determined that 6 kgf/cm or more.

3. Measuring heat resistance - Pb floating test

In lead trillion [...] magnetic sheet and copper clad laminate after 40 seconds left for an unusual change in the magnetic composite sheet, surface observed. As a result magnetic sheet and copper clad laminate on the surface of the blister is observed both magnetic composite sheet not been provided.

4. Measuring chemical resistance

About 30 minutes of immersing a 2N HCl aqueous solution magnetic sheets, said mass of magnetic sheets change, it has been determined that a variation in the thickness and permeability change. About 30 minutes of immersing a 2N NaOH aqueous solution magnetic sheets, said mass of magnetic sheets change, it has been determined that a variation in the thickness and permeability change. Magnetic powder is thereby lower a gate and precipitates, mass change, change mass of magnetic sheets, it has been determined that 5% hereinafter both change and permeability to thickness variations.

5. Measuring characteristic of rust

KS D9502 of saline spray test by a thermal, magnetic sheet 72 35 °C 5% concentration of NaCl in time average per hour after 1-a 2 ml into a neutral brine, discriminates whether a rust observed. Rust area method (rating number method) 9 discriminates whether a measured result. 8 Or more it has been determined that (rating number (rating number) method corrosion area and the effective area ratio of corrosion by whether the evaluation method are divided into as value of 0 - 10).

6. Peel strength measurement

Using UTM (universal testing machine), it has been determined that where the peel strength of the composite sheet-copper laminated magnetic magnetic sheet and copper foil between. As a result, 0 where the peel strength. It has been determined that 6 kgf/cm or more.

7. Measuring - bonding reinforcing cross cut test

Cross cut test (ASTM D3369) by, it has been determined that copper laminated magnetic sheet and copper foil between magnetic composite sheet as a minor component. It has been determined that cross cut test result 0/100 to 5/100.

8. It comes, [sup high temperature measuring characteristic of

After 72 hours at 85 °C/85% RH magnetic sheet in an oven to a air conditioner, magnetic sheets and permeability change thickness variations were measured. As a result magnetic sheets and permeability to thickness variations change it has been determined that both 5% hereinafter.