WO2017164174A1 - Electromagnetic shielding film - Google Patents
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- WO2017164174A1 WO2017164174A1 PCT/JP2017/011234 JP2017011234W WO2017164174A1 WO 2017164174 A1 WO2017164174 A1 WO 2017164174A1 JP 2017011234 W JP2017011234 W JP 2017011234W WO 2017164174 A1 WO2017164174 A1 WO 2017164174A1
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- shielding film
- electromagnetic wave
- wave shielding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0084—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a single continuous metallic layer on an electrically insulating supporting structure, e.g. metal foil, film, plating coating, electro-deposition, vapour-deposition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- 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
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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
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- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
Abstract
Description
図1に示すように、本実施形態の電磁波シールドフィルム100は、アルミニウム膜からなるシールド層111と、シールド層111の第1の面側に設けられた導電性接着剤層112と、シールド層111の第1の面とは反対側の第2の面側に設けられた絶縁保護層113とを備えている。 (Electromagnetic wave shielding film)
As shown in FIG. 1, the electromagnetic
本実施形態のシールド層111は、アルミニウム膜からなる。アルミニウム膜の厚さは、シールド特性を良好にする観点から、好ましくは0.01μm以上、より好ましくは0.1μm以上である。また、厚さは、柔軟性等の観点及び10MHz以上の高周波信号の伝送特性の観点から、好ましくは12μm以下、より好ましくは10μm以下、さらに好ましくは3μm以下である。 <Shield layer>
The
本実施形態の導電性接着剤層112は、接着性樹脂組成物と導電性フィラーとを有する導電性接着剤層である。本実施形態において、導電性フィラーは、スパイク状又はフィラメント状のニッケル粒子からなる。 <Conductive adhesive layer>
The conductive
本実施形態の絶縁保護層113は、接着剤層及びシールド層を保護できる所定の機械的強度、耐薬品性及び耐熱性等を満たし、充分な絶縁性を有していれば特に限定されない。例えば、熱可塑性樹脂組成物、熱硬化性樹脂組成物、又は活性エネルギー線硬化性組成物等を用いることができる。 <Insulation protective layer>
The insulating
本実施形態の電磁波シールドフィルムの製造方法は特に限定されず種々の方法により製造することができる。例えば、以下に示すように、支持基材の上に、導電性接着剤層を形成し、別の支持基材の上に絶縁保護層及びシールド層を形成し、導電性接着剤層と、シールド層とを貼り合わせて製造することができる。 (Production method)
The manufacturing method of the electromagnetic wave shielding film of this embodiment is not specifically limited, It can manufacture by various methods. For example, as shown below, a conductive adhesive layer is formed on a support substrate, an insulating protective layer and a shield layer are formed on another support substrate, a conductive adhesive layer, and a shield. The layers can be bonded together.
まず、接着剤層用組成物を調製する。接着剤層用組成物は、導電性フィラーと、樹脂組成物と、溶剤とを含む。導電性フィラーは、スパイク状又はフィラメント状のニッケル粒子とする。樹脂組成物は、特に限定されないが、スチレン系樹脂組成物、酢酸ビニル系樹脂組成物、ポリエステル系樹脂組成物、ポリエチレン系樹脂組成物、ポリプロピレン系樹脂組成物、イミド系樹脂組成物、アミド系樹脂組成物、若しくはアクリル系樹脂組成物等の熱可塑性樹脂組成物、又はフェノール系樹脂組成物、エポキシ系樹脂組成物、ウレタン系樹脂組成物、メラミン系樹脂組成物、若しくはアルキッド系樹脂組成物等の熱硬化性樹脂組成物等とすることができる。これらは単独で用いてもよく、2種以上を併用してもよい。 <Conductive adhesive layer forming step>
First, an adhesive layer composition is prepared. The composition for an adhesive layer includes a conductive filler, a resin composition, and a solvent. The conductive filler is spiked or filamentary nickel particles. The resin composition is not particularly limited, but a styrene resin composition, a vinyl acetate resin composition, a polyester resin composition, a polyethylene resin composition, a polypropylene resin composition, an imide resin composition, an amide resin. Compositions, or thermoplastic resin compositions such as acrylic resin compositions, or phenolic resin compositions, epoxy resin compositions, urethane resin compositions, melamine resin compositions, alkyd resin compositions, etc. It can be set as a thermosetting resin composition or the like. These may be used alone or in combination of two or more.
まず、保護層用組成物を調製する。保護層用組成物は、樹脂組成物に、溶剤及びその他の配合剤を適量加えて調製することができる。溶剤は、例えば、トルエン、アセトン、メチルエチルケトン、メタノール、エタノール、プロパノール及びジメチルホルムアミド等とすることができる。その他の配合剤としては、架橋剤、重合用触媒、硬化促進剤、充填材及び着色剤等を加えることができる。その他の配合剤は必要に応じて加えればよい。 <Insulating protective layer formation process>
First, a protective layer composition is prepared. The protective layer composition can be prepared by adding an appropriate amount of a solvent and other compounding agents to the resin composition. The solvent can be, for example, toluene, acetone, methyl ethyl ketone, methanol, ethanol, propanol, dimethylformamide, and the like. As other compounding agents, a crosslinking agent, a polymerization catalyst, a curing accelerator, a filler, a colorant, and the like can be added. Other compounding agents may be added as necessary.
次に、絶縁保護層の表面にシールド層を形成し、絶縁保護層とシールド層との積層体とする。具体的には、予め所定の厚さに形成したアルミニウム箔を絶縁保護層に貼り合わせる方法や、絶縁保護層の表面に蒸着又はめっき等によりアルミニウム膜を形成する方法を用いることができる。 <Shield layer formation process>
Next, a shield layer is formed on the surface of the insulating protective layer to form a laminate of the insulating protective layer and the shield layer. Specifically, a method in which an aluminum foil formed in advance to a predetermined thickness is bonded to the insulating protective layer, or a method in which an aluminum film is formed on the surface of the insulating protective layer by vapor deposition or plating can be used.
導電性接着剤層とシールド層とを対向させ、導電性接着剤層と積層体とを貼り合わせることにより、絶縁保護層、シールド層及び導電性接着剤層を有する電磁波シールドフィルムが得られる。 <Lamination process>
By facing the conductive adhesive layer and the shield layer and bonding the conductive adhesive layer and the laminate, an electromagnetic wave shielding film having an insulating protective layer, a shield layer, and a conductive adhesive layer is obtained.
本実施形態の電磁波シールドフィルムは、例えば、図2に示すシールドプリント配線板300に用いることができる。シールドプリント配線板300は、プリント配線板200と、電磁波シールドフィルム100と備えている。 (Shield printed wiring board)
The electromagnetic wave shielding film of this embodiment can be used for the shield printed
導電性フィラー粒子の凝集体のモード径、累積分布、D50及びDmaxは、粒度分布測定装置(マイクロトラックベル社製、MT3300EXII)を用い、水を分散媒として測定した。 <Evaluation of particle size>
The mode diameter, cumulative distribution, D50 and Dmax of the aggregate of the conductive filler particles were measured using a particle size distribution measuring apparatus (manufactured by Microtrack Bell Co., Ltd., MT3300EXII) using water as a dispersion medium.
作成した電磁波シールドフィルムと、評価用のプリント配線基板とを重ね合わせ、プレス機を用いて170℃、3.0MPaの条件で1分間加熱加圧した後、同じ温度及び圧力で3分間加熱加圧した。この後、支持基材を保護層から剥離して、評価用のシールドプリント配線板を作製した。 <Evaluation of electrical connection>
The produced electromagnetic wave shielding film and the printed wiring board for evaluation are superposed and heated and pressurized for 1 minute at 170 ° C. and 3.0 MPa using a press machine, and then heated and pressurized for 3 minutes at the same temperature and pressure. did. Then, the support base material was peeled from the protective layer to produce a shield printed wiring board for evaluation.
固形分量が20質量%となるように、トルエンにビスフェノールA型エポキシ系樹脂(三菱化学(株)製、jER1256)を100質量部、硬化剤として(三菱化学(株)製、ST14)を0.1質量部配合し、絶縁保護層組成物を調製した。この組成物を、表面を離型処理したポリエチレンテレフタレート(PET)フィルムからなる絶縁保護層形成用支持基材に塗布し、加熱乾燥して絶縁保護層形成用支持基材の表面に絶縁保護層(厚さ6μm)を形成した。 <Creation of insulation protective layer and shield layer>
100 parts by mass of bisphenol A type epoxy resin (manufactured by Mitsubishi Chemical Co., Ltd., jER1256) and 0.1% of a curing agent (manufactured by Mitsubishi Chemical Co., Ltd., ST14) so that the solid content is 20% by mass. 1 part by mass was blended to prepare an insulating protective layer composition. This composition is applied to a support substrate for forming an insulating protective layer made of a polyethylene terephthalate (PET) film whose surface has been subjected to mold release treatment, dried by heating, and an insulating protective layer ( 6 μm thick) was formed.
-電磁波シールドフィルムの作成-
固形分量が20質量%となるように、トルエンにビスフェノールA型エポキシ系樹脂(三菱化学(株)製、jER1256)を100質量部、硬化剤(三菱化学(株)製、ST14)を0.1質量部、フィラメント状のニッケル粒子からなる導電性フィラーを43質量部添加し、撹拌混合して接着剤層組成物を調製した。なお、導電性フィラーのモード径は34μmで、累積分布は76%であり、メディアン径(D50)は20μm、最大粒子径(Dmax)は88μmであった。また、得られた接着剤層組成物中のニッケル粒子の割合は30質量%となる。得られた接着剤層組成物を、表面を離型処理したPETフィルムからなる導電性接着剤層形成用支持基材に塗布し、加熱乾燥することで、導電性接着剤層形成用支持基材の表面に導電性接着剤層(厚さ12μm)を形成した。 Example 1
-Creation of electromagnetic shielding film-
100 parts by mass of bisphenol A type epoxy resin (manufactured by Mitsubishi Chemical Co., Ltd., jER1256) and 0.1% of curing agent (manufactured by Mitsubishi Chemical Co., Ltd., ST14) so that the solid content is 20% by mass. 43 parts by mass of a conductive filler composed of part by mass and filamentary nickel particles was added and mixed by stirring to prepare an adhesive layer composition. The mode diameter of the conductive filler was 34 μm, the cumulative distribution was 76%, the median diameter (D50) was 20 μm, and the maximum particle diameter (Dmax) was 88 μm. Moreover, the ratio of the nickel particle in the obtained adhesive bond layer composition will be 30 mass%. The obtained adhesive layer composition is applied to a support substrate for forming a conductive adhesive layer made of a PET film whose surface has been release-treated, and dried by heating, whereby a support substrate for forming a conductive adhesive layer is formed. A conductive adhesive layer (thickness 12 μm) was formed on the surface.
モード径が31μmで累積分布が79%、メディアン径(D50)が19μm、最大粒子径(Dmax)が62μmの、フィラメント状のニッケル粒子からなる導電性フィラーを用いた他は実施例1と同様にした。 (Example 2)
Similar to Example 1 except that a conductive filler made of filamentary nickel particles having a mode diameter of 31 μm, a cumulative distribution of 79%, a median diameter (D50) of 19 μm, and a maximum particle diameter (Dmax) of 62 μm was used. did.
モード径が23μmで累積分布が68%、メディアン径(D50)が15μm、最大粒子径(Dmax)が88μmの、フィラメント状のニッケル粒子からなる導電性フィラーを用いた他は実施例1と同様にした。 (Example 3)
Similar to Example 1 except that a conductive filler made of filamentary nickel particles having a mode diameter of 23 μm, a cumulative distribution of 68%, a median diameter (D50) of 15 μm, and a maximum particle diameter (Dmax) of 88 μm was used. did.
モード径が8μmで累積分布が37%、メディアン径(D50)が10μm、最大粒子径(Dmax)が105μmの、スパイク状のニッケル粒子からなる導電性フィラーを用いた他は実施例1と同様にした。 (Example 4)
Similar to Example 1, except that a conductive filler made of spike-like nickel particles having a mode diameter of 8 μm, a cumulative distribution of 37%, a median diameter (D50) of 10 μm, and a maximum particle diameter (Dmax) of 105 μm was used. did.
モード径が7μmで累積分布が66%、メディアン径(D50)が6μm、最大粒子径(Dmax)が19μmの、球状のニッケル粒子からなる導電性フィラーを用いた他は実施例1と同様にした。リフロー前の初期電気抵抗値は、7750mΩであった。リフロー1回目~5回目の電気抵抗値はいずれも無限大(測定レンジ外)であった。 (Comparative Example 1)
Example 1 was used except that a conductive filler made of spherical nickel particles having a mode diameter of 7 μm, a cumulative distribution of 66%, a median diameter (D50) of 6 μm, and a maximum particle diameter (Dmax) of 19 μm was used. . The initial electrical resistance value before reflowing was 7750 mΩ. The electrical resistance values at the first to fifth reflows were infinite (out of the measurement range).
モード径が17μmで累積分布が64%、メディアン径(D50)が14μm、最大粒子径(Dmax)が52μmの、デンドライト状の銀被覆銅粒子(Ag-Cu、三井金属社製)からなる導電性フィラーを用いた他は実施例1と同様にした。リフロー前の電気抵抗値は、無限大(測定レンジ外)であった。このため、リフロー後の電気抵抗値の測定は行わなかった。 (Comparative Example 2)
Conductivity made of dendritic silver-coated copper particles (Ag-Cu, manufactured by Mitsui Kinzoku Co., Ltd.) having a mode diameter of 17 μm, a cumulative distribution of 64%, a median diameter (D50) of 14 μm, and a maximum particle diameter (Dmax) of 52 μm. The same procedure as in Example 1 was performed except that a filler was used. The electrical resistance value before reflow was infinite (out of the measurement range). For this reason, the measurement of the electrical resistance value after reflow was not performed.
111 シールド層
112 導電性接着剤層
113 絶縁保護層
200 プリント配線板
211 ベース層
212 グランド回路
213 絶縁性接着剤層
214 カバーレイ
300 シールドプリント配線板 DESCRIPTION OF
Claims (7)
- アルミニウム膜からなるシールド層と、導電性接着剤層とを備え、
前記導電性接着剤層は、スパイク状又はフィラメント状のニッケル粒子からなる、導電性フィラーを含み、
前記ニッケル粒子は、
メディアン径(D50)が5μm以上、30μm以下、
モード径が3μm以上、50μm以下、
モード径における累積分布が35%以上、
である、電磁波シールドフィルム。 Provided with a shield layer made of an aluminum film and a conductive adhesive layer,
The conductive adhesive layer includes a conductive filler composed of spiked or filamentary nickel particles,
The nickel particles are
Median diameter (D50) is 5 μm or more and 30 μm or less,
The mode diameter is 3 μm or more and 50 μm or less,
Cumulative distribution in mode diameter is 35% or more,
An electromagnetic wave shielding film. - 前記導電性フィラーは、
モード径における累積分布が、60%以上である、請求項1に記載の電磁波シールドフィルム。 The conductive filler is
The electromagnetic wave shielding film according to claim 1, wherein the cumulative distribution in the mode diameter is 60% or more. - 前記導電性フィラーは、最大粒子径が90μm以下である、請求項1又は2に記載の電磁波シールドフィルム。 The electromagnetic wave shielding film according to claim 1 or 2, wherein the conductive filler has a maximum particle size of 90 µm or less.
- 前記導電性接着剤層は、厚さが前記導電性フィラーのメディアン径以下である、請求項1~3のいずれか1項に記載の電磁波シールドフィルム。 The electromagnetic wave shielding film according to any one of claims 1 to 3, wherein the conductive adhesive layer has a thickness equal to or less than a median diameter of the conductive filler.
- 前記導電性接着剤層は、前記導電性フィラーを20質量%以上、50質量%以下含む、
請求項1~4のいずれか1項に記載の電磁波シールドフィルム。 The conductive adhesive layer contains 20% by mass or more and 50% by mass or less of the conductive filler,
The electromagnetic wave shielding film according to any one of claims 1 to 4. - スパイク状又はフィラメント状で、
モード径が3μm以上、50μm以下であり、
モード径における累積分布が35%以上である、ニッケル粒子からなる電磁波シールドフィルム用導電性フィラー。 Spike or filament,
The mode diameter is 3 μm or more and 50 μm or less,
A conductive filler for an electromagnetic wave shielding film made of nickel particles, wherein the cumulative distribution in mode diameter is 35% or more. - 前記ニッケル粒子は、最大粒子径が90μm以下である、請求項6に記載の電磁波シールドフィルム用導電性フィラー。 The conductive filler for an electromagnetic wave shielding film according to claim 6, wherein the nickel particles have a maximum particle diameter of 90 μm or less.
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KR1020187020204A KR102280175B1 (en) | 2016-03-23 | 2017-03-21 | electromagnetic shielding film |
CN201780013187.0A CN108702863B (en) | 2016-03-23 | 2017-03-21 | Electromagnetic wave shielding film |
JP2018507336A JP7023836B2 (en) | 2016-03-23 | 2017-03-21 | Electromagnetic wave shield film |
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Cited By (4)
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WO2019077909A1 (en) * | 2017-10-16 | 2019-04-25 | タツタ電線株式会社 | Electroconductive adhesive |
CN109868077A (en) * | 2019-01-08 | 2019-06-11 | 信维通信(江苏)有限公司 | A kind of antifreeze plate and preparation method thereof |
WO2021177328A1 (en) * | 2020-03-03 | 2021-09-10 | タツタ電線株式会社 | Electromagnetic wave shielding film |
WO2023243621A1 (en) * | 2022-06-14 | 2023-12-21 | 株式会社スリーボンド | Electrically conductive resin composition and cured product thereof |
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- 2017-03-21 WO PCT/JP2017/011234 patent/WO2017164174A1/en active Application Filing
- 2017-03-21 JP JP2018507336A patent/JP7023836B2/en active Active
- 2017-03-22 TW TW106109519A patent/TWI732836B/en active
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WO2019077909A1 (en) * | 2017-10-16 | 2019-04-25 | タツタ電線株式会社 | Electroconductive adhesive |
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KR102337623B1 (en) * | 2017-10-16 | 2021-12-09 | 타츠타 전선 주식회사 | conductive adhesive |
CN109868077A (en) * | 2019-01-08 | 2019-06-11 | 信维通信(江苏)有限公司 | A kind of antifreeze plate and preparation method thereof |
CN109868077B (en) * | 2019-01-08 | 2021-06-15 | 信维通信(江苏)有限公司 | Magnetic separation sheet and manufacturing method thereof |
WO2021177328A1 (en) * | 2020-03-03 | 2021-09-10 | タツタ電線株式会社 | Electromagnetic wave shielding film |
KR20220148802A (en) | 2020-03-03 | 2022-11-07 | 타츠타 전선 주식회사 | electromagnetic shielding film |
WO2023243621A1 (en) * | 2022-06-14 | 2023-12-21 | 株式会社スリーボンド | Electrically conductive resin composition and cured product thereof |
Also Published As
Publication number | Publication date |
---|---|
JPWO2017164174A1 (en) | 2019-02-14 |
KR20180122597A (en) | 2018-11-13 |
KR102280175B1 (en) | 2021-07-20 |
CN108702863B (en) | 2021-04-13 |
TW201802208A (en) | 2018-01-16 |
CN108702863A (en) | 2018-10-23 |
TWI732836B (en) | 2021-07-11 |
JP7023836B2 (en) | 2022-02-22 |
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