TWI700982B - Electromagnetic wave shielding film - Google Patents
Electromagnetic wave shielding film Download PDFInfo
- Publication number
- TWI700982B TWI700982B TW106104503A TW106104503A TWI700982B TW I700982 B TWI700982 B TW I700982B TW 106104503 A TW106104503 A TW 106104503A TW 106104503 A TW106104503 A TW 106104503A TW I700982 B TWI700982 B TW I700982B
- Authority
- TW
- Taiwan
- Prior art keywords
- insulating protective
- protective layer
- electromagnetic wave
- wave shielding
- shielding film
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
-
- 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
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
-
- 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
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/212—Electromagnetic interference shielding
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Laminated Bodies (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
本發明關於一種電磁波屏蔽膜。電磁波屏蔽膜包括絕緣保護層110和屏蔽層120。絕緣保護層110表面的算術平均傾斜度在30°以上。 The present invention relates to an electromagnetic wave shielding film. The electromagnetic wave shielding film includes an insulating protective layer 110 and a shielding layer 120. The arithmetic average inclination of the surface of the insulating protection layer 110 is above 30°.
Description
本發明關於一種電磁波屏蔽膜。 The present invention relates to an electromagnetic wave shielding film.
近年來,日益需求智慧型手機和平板資訊終端等具有高速傳輸大容量數據的性能。要高速傳輸大容量數據則需要利用高頻訊號。然而,如果利用高頻訊號,則設在印刷配線板上的訊號電路就會發出電磁波雜訊,容易導致周邊設備出現誤動作。為了防止出現上述誤動作,屏蔽電磁波而使印刷配線板免受干擾就很重要。 In recent years, there has been an increasing demand for smart phones and tablet information terminals with high-speed transmission of large-capacity data. To transmit large-capacity data at high speeds, high-frequency signals are required. However, if a high-frequency signal is used, the signal circuit set on the printed wiring board will emit electromagnetic noise, which can easily cause malfunction of peripheral equipment. In order to prevent the above malfunctions, it is important to shield the electromagnetic waves and prevent the printed wiring board from interference.
為了屏蔽電磁波而使印刷配線板免受干擾,有人提出了如下方法:將包括絶緣層和屏蔽層的電磁波屏蔽膜貼到印刷配線板上(如參照專利文獻1)。 In order to shield the electromagnetic wave and prevent the printed wiring board from interference, a method has been proposed in which an electromagnetic wave shielding film including an insulating layer and a shielding layer is attached to the printed wiring board (for example, refer to Patent Document 1).
此外,為了隱藏電路圖案,有人提出了一種電磁波屏蔽膜,其中,將絕緣保護層染成黒色(如參照專利文獻2)。 In addition, in order to hide the circuit pattern, someone has proposed an electromagnetic wave shielding film in which an insulating protective layer is dyed in black (for example, refer to Patent Document 2).
此外,為了提高印刷到電磁波屏蔽膜表面的白色文字的視覺清晰度,有人提出對電磁波屏蔽膜的絕緣保護層的色調進行調整(如參照專利文獻3)。 In addition, in order to improve the visual clarity of the white characters printed on the surface of the electromagnetic wave shielding film, it has been proposed to adjust the color tone of the insulating protective layer of the electromagnetic wave shielding film (for example, refer to Patent Document 3).
〔專利文獻〕 〔Patent Literature〕
[專利文獻1]日本特開2004-095566號公報 [Patent Document 1] JP 2004-095566 A
[專利文獻2]日本特開2014-078574號公報 [Patent Document 2] JP 2014-078574 A
[專利文獻3]日本專利第5796690號公報 [Patent Document 3] Japanese Patent No. 5796690
在電子裝置的組裝製程中,為了對印刷配線板進行管理,會用白色油墨將符號等印刷到貼在該印刷配線板上的電磁波屏蔽膜表面。然而,先前的電磁波屏蔽膜有如下缺點:用白色油墨印刷時容易滲色,導致用白色油墨印刷的製程的生產性較低。 In the assembly process of electronic devices, in order to manage the printed wiring board, white ink is used to print symbols and the like on the surface of the electromagnetic wave shielding film pasted on the printed wiring board. However, the conventional electromagnetic wave shielding film has the following disadvantages: it is easy to bleed when printed with white ink, resulting in low productivity in the process of printing with white ink.
此外,設有電磁波屏蔽膜的資訊終端等有輕量、小型化的需求,因此,伴隨著該需求,電磁波屏蔽膜的尺寸就越來越小,電磁波屏蔽膜上印刷的文字等也越來越小。 In addition, there is a demand for light weight and miniaturization in information terminals equipped with electromagnetic wave shielding films. Therefore, with this demand, the size of electromagnetic wave shielding films has become smaller and smaller, and the characters printed on electromagnetic wave shielding films have also increased. small.
印刷的文字變小,就使得先前的電磁波屏蔽膜上印刷的文字難以辨認。尤其是在較高照度的室內,該影響會變得更大。 The printed characters become smaller, making the characters printed on the previous electromagnetic wave shielding film difficult to read. Especially in a higher illuminance room, the influence will become greater.
並且,如果利用絲網印刷在先前的電磁波屏蔽膜上印刷文字和符號,會出現如下問題:油墨會滲色到絲網印版與電磁波屏蔽膜之間,導致印刷精度下降,較小的文字等難以辨認。即使調節絕緣保護層的色調、提高對比度,也難以從根本上改善滲色造成的視覺清晰度下降問題。 Also, if you use screen printing to print text and symbols on the previous electromagnetic wave shielding film, the following problems will occur: ink will bleed between the screen printing plate and the electromagnetic wave shielding film, resulting in a decrease in printing accuracy and smaller characters. Illegible. Even if the color tone of the insulating protective layer is adjusted and the contrast ratio is increased, it is difficult to fundamentally improve the problem of reduced visual clarity caused by color bleeding.
本發明的目的是實現一種電磁波屏蔽膜,既能夠讓較小的文字等容易辨認,亦能夠在其表面進行高精度的印刷。 The purpose of the present invention is to realize an electromagnetic wave shielding film that can not only make small characters and the like easy to recognize, but also can print on the surface with high precision.
電磁波屏蔽膜的一態樣是包括絕緣保護層和屏蔽層,絕緣保護層表面的算術平均傾斜度(Arithmetic mean slope)在30°以上。 One aspect of the electromagnetic wave shielding film is to include an insulating protective layer and a shielding layer, and the arithmetic mean slope of the surface of the insulating protective layer is above 30°.
依據本發明的電磁波屏蔽膜,既能夠讓較小的文字等容易辨認,亦能夠進行高精度的印刷。 According to the electromagnetic wave shielding film of the present invention, small characters and the like can be easily recognized, and high-precision printing can be performed.
110‧‧‧絕緣保護層 110‧‧‧Insulation protection layer
120‧‧‧屏蔽層 120‧‧‧Shielding layer
130‧‧‧黏著劑層 130‧‧‧Adhesive layer
140‧‧‧各向同性導電性黏著劑層 140‧‧‧Isotropic conductive adhesive layer
圖1是表示一實施方式所涉及的電磁波屏蔽膜的剖面圖。 Fig. 1 is a cross-sectional view showing an electromagnetic wave shielding film according to an embodiment.
圖2是表示變形例所涉及的電磁波屏蔽膜的剖面圖。 Fig. 2 is a cross-sectional view showing an electromagnetic wave shielding film according to a modification.
下面具體說明本發明的電磁波屏蔽膜。但本發明不限於以下實施方式,可以在不改變本發明主旨的範圍內做出適當的變更來加以應用。 The electromagnetic wave shielding film of the present invention will be specifically described below. However, the present invention is not limited to the following embodiments, and can be applied with appropriate changes within the scope not changing the gist of the present invention.
(電磁波屏蔽膜) (Electromagnetic wave shielding film)
圖1是簡要地表示本實施方式的電磁波屏蔽膜的剖面簡圖。如圖1所示,電磁波屏蔽膜包括絕緣保護層110和屏蔽層120。在屏蔽層120的與絕緣保護層110相反一側的面上,可以依據需要設置黏著劑層130。藉由設置黏著劑層,就能夠容易地將電磁波屏蔽膜貼合到印刷配線板上。
FIG. 1 is a schematic cross-sectional view schematically showing the electromagnetic wave shielding film of this embodiment. As shown in FIG. 1, the electromagnetic wave shielding film includes an insulating
(絕緣保護層) (Insulation protection layer)
絕緣保護層110是為了保護屏蔽層而設。在本實施方式的電磁屏蔽膜中,絕緣保護層110的算術平均傾斜度在30°以上。
The insulating
藉由將絕緣保護層110的算術平均傾斜度設在30°以上(設在35°以上較佳,設在40°以上更佳),絕緣保護層110的表面積就會增大,油墨吸收性就會提高,從而能夠抑制絲網印刷之際油墨滲色。這樣一來,就能夠提高印刷作業的效率。
By setting the arithmetic mean inclination of the insulating
從減少滲色的觀點出發,算術平均傾斜度的值較大為佳,從絕緣保護層110的生產性的觀點出發,算術平均傾斜度在80°以下較佳,在70°以下更佳。
From the viewpoint of reducing bleeding, the value of the arithmetic mean gradient is preferably larger. From the viewpoint of productivity of the insulating
需要說明的是,本發明的算術平均傾斜度能夠依據JIS B 0601(2001)進行測量。 It should be noted that the arithmetic mean gradient of the present invention can be measured in accordance with JIS B 0601 (2001).
絕緣保護層的均方根傾斜度(Root mean square slope)可以在35°以上,在40°以上更佳,在45°以上尤佳。因為均方根傾
斜度在35°以上,所以絕緣保護層110的表面積就會較大,油墨的吸收性提高,從而能夠抑制絲網印刷之際油墨滲色。這樣一來,就能夠提高印刷作業的效率。
The Root mean square slope of the insulating protection layer can be above 35°, preferably above 40°, especially above 45°. Because the root mean square dip
The inclination is more than 35°, so the surface area of the insulating
需要說明的是,本發明中的均方根傾斜度能夠依據JIS B 0601(2001)進行測量。 It should be noted that the root mean square slope in the present invention can be measured in accordance with JIS B 0601 (2001).
形成具有規定範圍的算術平均傾斜度和均方根傾斜度的絕緣保護層的方法沒有特別限定,能夠利用公知的方法。此等公知的方法例如有:用壓花加工賦予剝離膜凹凸形状,在剝離膜表面塗佈形成絕緣保護層的樹脂組合物並乾燥,由此將剝離膜的凹凸形状移印到絕緣保護層上的方法;在屏蔽層表面塗佈包含微粒的樹脂組合物並乾燥而形成具有凹凸形状的絕緣保護層的方法;向絕緣保護層表面噴射乾冰等的方法;在屏蔽層表面塗佈活性能量射線固化型組合物後,將具有凹凸形状的鑄模按到屏蔽層表面使該固化型組合物層固化,並將鑄模剝離的方法等。 The method of forming an insulating protective layer having a predetermined range of arithmetic mean gradient and root mean square gradient is not particularly limited, and a known method can be used. Such well-known methods include, for example, embossing to give the release film an uneven shape, coating the surface of the release film with a resin composition forming an insulating protective layer and drying, thereby printing the uneven shape of the release film onto the insulating protective layer The method; the method of coating the resin composition containing fine particles on the surface of the shielding layer and drying to form an insulating protective layer with uneven shapes; the method of spraying dry ice on the surface of the insulating protective layer; coating the surface of the shielding layer to cure with active energy rays After molding the composition, press a mold having a concave and convex shape to the surface of the shielding layer to solidify the curable composition layer and peel off the mold.
在上述方法中,從生產性的觀點出發,較佳的方法是塗佈包含微粒的樹脂組合物並乾燥而形成具有凹凸形状的絕緣保護層的方法。此時,向絕緣保護層110添加的微粒沒有特別限定,例如,可以使用樹脂微粒或無機微粒。樹脂微粒可以使用丙烯酸樹脂微粒、聚丙烯腈微粒、聚氨酯微粒、聚醯胺微粒和聚醯亞胺微粒等。無機微粒可以使用碳酸鈣微粒、矽酸鈣微粒、黏土、高嶺土、滑石、二氧化矽微粒、玻璃微粒、矽藻土、雲母粉、氧化鋁微粒、氧化鎂微粒、氧化鋅微粒、硫酸鋇微粒、硫酸鋁微粒、硫酸鈣微粒和碳酸鎂微粒等。上述樹脂微粒和無機微粒既能夠單獨使用,亦能夠組合複數種使用。從提高絕緣保護層的耐磨性的觀點出發,無機微粒較佳。
Among the above methods, from the viewpoint of productivity, a preferred method is a method of coating a resin composition containing fine particles and drying to form an insulating protective layer having a concave-convex shape. At this time, the fine particles added to the insulating
從讓絕緣保護層表面產生適度的凹凸,使算術平均傾斜度和均方根傾斜度較大的觀點出發,微粒的50%平均粒徑在2μm以上較佳,在4μm以上更佳,在10μm以上尤佳。為了抑制絕緣保護層白色化,50%平均粒徑在30μm以下較佳,在20μm以下更佳。 From the viewpoint of making the surface of the insulating protective layer moderately uneven and increasing the arithmetic average gradient and root mean square gradient, the 50% average particle size of the particles is preferably 2μm or more, more preferably 4μm or more, and 10μm or more Especially good. In order to suppress the whitening of the insulating protective layer, the 50% average particle size is preferably 30 μm or less, and more preferably 20 μm or less.
從使算術平均傾斜度和均方根傾斜度較大的觀點出發,向絕緣保護層110添加微粒的添加量在3質量%以上較佳,在5%以上更佳。從抑制絕緣保護層白色化的觀點出發,向絕緣保護層110添加微粒的添加量在30質量%以下較佳,在20質量%以下更佳,在17質量%以下尤佳。
From the viewpoint of making the arithmetic mean gradient and the root mean square gradient larger, the amount of particles added to the insulating
絕緣保護層110中能夠添加黑色系著色劑。藉由添加黑色系著色劑,就能夠讓絕緣保護層110的L*值變小,從而能夠進一步提高文字的視覺清晰度。當印刷到絕緣保護層110上的文字是白色時,讓L*值在20以下較佳,在18以下更佳。需要說明的是,本發明中的L*值能夠依據JIS Z 8781-4(2013)進行測量。
A black colorant can be added to the insulating
黑色系著色劑可以是黒色顏料或將複數種顏料進行減色混合而變為黑色的混合顏料等。黒色顏料例如可以是以下任一種或幾種的組合:碳黑、科琴碳黑(Ketjen Black)、奈米碳管(CNT)、苝黑(Perylene Black)、鈦黑、鐵黑、苯胺黑等。混合顏料例如可以混合使用紅色、綠色、藍色、黃色、紫色、青色(Cyan)和洋紅色(Magenta)等顏料。 The black colorant may be a black pigment or a mixed pigment obtained by subtractively mixing a plurality of pigments to become black. The black pigment can be, for example, any one or a combination of the following: carbon black, Ketjen Black, carbon nanotube (CNT), Perylene Black, titanium black, iron black, aniline black, etc. . As the mixed pigment, for example, pigments such as red, green, blue, yellow, purple, cyan (Cyan), and magenta (Magenta) can be mixed.
黑色系著色劑的粒徑只要能夠實現所需的L*值即可,但從分散性和減小L*值等觀點出發,平均一次粒徑在20nm以上且100nm以下較佳。黑色系著色劑的平均一次粒徑能夠利用在由穿透式電子顯微鏡(TEM)放大5萬倍~100萬倍左右的圖像上能夠觀察到的20個左右一次粒子的平均粒徑求出。 The particle size of the black colorant may be as long as it can achieve the desired L* value, but from the viewpoints of dispersibility and reduction of the L* value, the average primary particle size is preferably 20 nm or more and 100 nm or less. The average primary particle size of the black colorant can be obtained from the average particle size of about 20 primary particles that can be observed on an image magnified by a transmission electron microscope (TEM) of about 50,000 times to about 1 million times.
從讓L*值較小的觀點出發,向絕緣保護層110添加的黑色系著色劑的添加量在0.5質量%以上較佳,在1質量%以上更佳。不過,黑色系著色劑只要依據需要添加即可,也可以不添加。
From the viewpoint of making the L* value small, the amount of the black colorant added to the insulating
讓絕緣保護層110的60°光澤度在3%以下(在2%以下較佳,在1%以下更佳),由此在絕緣保護層110表面就會產生適度的光的散射,光澤感就會得到適度的抑制。這樣一來,就能夠提高印刷文字的視覺清晰度。絕緣保護層110的85°光澤度在10%以下較佳,在3%以下更佳,在1%以下尤佳。
Let the 60° gloss of the insulating
需要說明的是,本發明中的60°光澤度和85°光澤度能夠依據實施例表示的方法進行測量。 It should be noted that the 60° gloss and 85° gloss in the present invention can be measured according to the method shown in the examples.
絕緣保護層110以具有所需的絶緣性,符合規定的機械強度、耐藥品性和耐熱性為佳。
The insulating
構成絕緣保護層的樹脂材料沒有特別限定,只要具有足夠的絶緣性即可。例如可以使用熱塑性樹脂組合物、熱固化型樹脂組合物和活性能量射線固化型組合物等。 The resin material constituting the insulating protective layer is not particularly limited as long as it has sufficient insulating properties. For example, a thermoplastic resin composition, a thermosetting resin composition, an active energy ray curing composition, etc. can be used.
熱塑性樹脂組合物沒有特別限定,可以使用苯乙烯系樹脂組合物、乙酸乙烯酯系樹脂組合物、聚酯系樹脂組合物、聚乙烯系樹脂組合物、聚丙烯系樹脂組合物、醯亞胺系樹脂組合物、丙烯酸系樹脂組合物等。熱固化型樹脂組合物沒有特別限定,可以使用酚系樹脂組合物、環氧系樹脂組合物、氨基甲酸乙酯系樹脂組合物、三聚氰胺系樹脂組合物、醇酸系樹脂組合物等。活性能量射線固化型組合物沒有特別限定,可以使用例如分子中至少含有兩個(甲基)丙烯酰氧基的聚合性化合物。上述組合物可以單獨使用一種,也可以兩種以上並用。 The thermoplastic resin composition is not particularly limited. A styrene resin composition, a vinyl acetate resin composition, a polyester resin composition, a polyethylene resin composition, a polypropylene resin composition, and an imide resin composition can be used. Resin composition, acrylic resin composition, etc. The thermosetting resin composition is not particularly limited, and a phenol resin composition, epoxy resin composition, urethane resin composition, melamine resin composition, alkyd resin composition, etc. can be used. The active energy ray-curable composition is not particularly limited. For example, a polymerizable compound containing at least two (meth)acryloyloxy groups in the molecule can be used. The above-mentioned composition may be used alone or in combination of two or more.
在絕緣保護層110中,除了包含上述微粒和著色劑,還可以
依據需要,包含固化促進劑、增黏劑、抗氧化劑、顏料、染料、塑化劑、紫外線吸收劑、消泡劑、平整劑、填充劑、阻燃劑、黏度調節劑、抗黏著(anti-blocking)劑等。
In the insulating
絕緣保護層110的厚度沒有特別限定,可以依據需要進行適當設定,但從充分保護屏蔽層的觀點出發,絕緣保護層110的厚度在1μm以上較佳,在4μm以上更佳。從確保電磁波屏蔽膜的可撓曲性的觀點出發,絕緣保護層110的厚度在10μm以下較佳,在5μm以下更佳。
The thickness of the insulating
(屏蔽層) (Shield)
本實施方式的屏蔽層120可以是金屬層。屏蔽層120可以使用由以下任一種金屬或由包括以下兩種以上的合金等形成的金屬層:鎳、銅、銀、錫、金、鈀、鋁、鉻、鈦、鋅。金屬層的材質和厚度只要依據所需的電磁屏蔽效果和對反覆彎曲‧滑動磨耗的耐性進行適當選擇即可。從得到充分的電磁屏蔽效果的觀點出發,金屬層的厚度在0.1μm以上較佳。從生產性和彎曲性等觀點出發,金屬層的厚度在8μm以下較佳。需要說明的是,金屬層可以藉由電鍍法、無電鍍法、濺鍍法、電子束蒸鍍法、真空蒸鍍法、CVD法、有機金屬化學氣相沉積法等形成。金屬層可以由金屬箔、金屬奈米粒子、鱗片狀金屬粒子等形成。
The
(黏著劑層) (Adhesive layer)
本實施方式的電磁波屏蔽膜可以在屏蔽層120的與絕緣保護層110相反的一側具有黏著劑層130。黏著劑層130能夠由具有黏著性的樹脂組合物形成。黏著性樹脂組合物沒有特別限定,可以使用:苯乙烯系樹脂組合物、乙酸乙烯酯系樹脂組合物、聚酯系樹脂組合物、聚乙烯系樹脂組合物、聚丙烯系樹脂組合物、醯亞胺系樹脂組合物、醯胺系樹脂組合物、丙烯酸系樹脂
組合物等熱塑性樹脂組合物;酚系樹脂組合物、環氧系樹脂組合物、氨基甲酸乙酯系樹脂組合物、三聚氰胺系樹脂組合物、醇酸系樹脂組合物等熱固化型樹脂組合物等。上述組合物可以單獨使用一種,也可以兩種以上並用。
The electromagnetic wave shielding film of this embodiment may have an
黏著劑層130能夠依據需要形成為具有各向同性導電性或各向異性導電性的層。若要將黏著劑層130形成為具有導電性的層,則只要向具有黏著性的樹脂組合物中添加導電性微粒即可。
The
導電性微粒沒有特別限定,可以使用金屬微粒、奈米碳管、炭素繊維、金屬繊維等。例如,可以使用銀粉、銅粉、鎳粉、焊料粉、鋁粉等金屬微粒。還可以使用對銅粉鍍銀形成的銀包銅粉、用金屬包覆高分子微粒或玻璃珠等形成的金屬包覆微粒等。其中,從経済性的觀點出發,可以廉價入手的銅粉或銀包銅粉較佳。 The conductive fine particles are not particularly limited, and metal fine particles, carbon nanotubes, carbon fibers, metal fibers, etc. can be used. For example, metal particles such as silver powder, copper powder, nickel powder, solder powder, and aluminum powder can be used. It is also possible to use silver-coated copper powder formed by plating copper powder with silver, metal-coated particles formed by coating polymer particles or glass beads with metal, and the like. Among them, from the viewpoint of economics, copper powder or silver-coated copper powder that can be obtained at a low price is preferable.
導電性粒子的50%平均粒徑沒有特別限定,但從實現良好的導電性的觀點出發,導電性粒子的50%平均粒徑在0.5μm以上較佳。從讓導電性黏著劑層較薄的觀點出發,導電性粒子的50%平均粒徑在15μm以下較佳。 The 50% average particle size of the conductive particles is not particularly limited, but from the viewpoint of achieving good conductivity, the 50% average particle size of the conductive particles is preferably 0.5 μm or more. From the viewpoint of making the conductive adhesive layer thinner, the 50% average particle diameter of the conductive particles is preferably 15 μm or less.
導電性粒子的形状沒有特別限定,可以從球状、扁平状、鱗片狀、樹枝状等形狀中做適當選擇。 The shape of the conductive particles is not particularly limited, and can be appropriately selected from shapes such as spherical, flat, scaly, and dendritic.
黏著劑層130的厚度可以依據需要進行調節,從實現良好的黏著性的觀點出發,讓黏著劑層130的厚度在0.5μm以上較佳。從讓電磁波屏蔽膜較薄的觀點出發,讓黏著劑層130的厚度在20μm以下較佳。
The thickness of the
以上對電磁波屏蔽膜具有絕緣保護層110、屏蔽層120和黏著劑層130的構成進行了說明,但如圖2所示,還可以採用具有
絕緣保護層110和各向同性導電性黏著劑層140的構成。
The electromagnetic wave shielding film has the insulating
絕緣保護層110可以採用與圖1所示的電磁波屏蔽膜相同的構成。各向同性導電性黏著劑層140可以由與黏著劑層130相同的具有黏著性的樹脂組合物和導電性微粒形成。各向同性導電性黏著劑層140作為屏蔽層發揮作用。
The insulating
(屏蔽膜的製造方法) (Method of manufacturing shielding film)
電磁波屏蔽膜可以用公知的製造方法製造。以下表示其中一例。 The electromagnetic wave shielding film can be manufactured by a known manufacturing method. One example is shown below.
首先,在表面經過脫模處理的底膜上,形成具有導電性的黏著劑層130。具體而言,將包含構成黏著劑層130的材料的黏著劑層組合物的溶液塗佈到底膜表面並乾燥,從而形成黏著劑層130。
First, a conductive
其次,在黏著劑層130的表面形成屏蔽層120。具體而言,可以採用以下方法:將厚度形成為預先規定厚度的金屬箔貼合到黏著劑層130上的方法;藉由蒸鍍或濕式鍍膜等在黏著劑層130的表面形成金屬層的方法。
Next, a
接著,在屏蔽層120的表面形成絕緣保護層110。具體而言,可以採用以下方法:將包含構成絕緣保護層110的材料的絕緣保護層組合物的溶液塗佈到屏蔽層120的表面並乾燥。
Next, an insulating
然後,藉由剝離底膜,就能夠得到電磁波屏蔽膜。 Then, by peeling off the base film, an electromagnetic wave shielding film can be obtained.
需要說明的是,還可以將黏著劑層130用作各向同性導電性黏著劑層140,並在各向同性導電性黏著劑層140的表面形成絕緣保護層110。
It should be noted that the
為了對絕緣保護層110的表面的算術平均傾斜度和均方根傾斜度進行調節,也可以對絕緣保護層110的表面進行噴砂等處理。
In order to adjust the arithmetic mean inclination and root mean square inclination of the surface of the insulating
以上表示了從黏著劑層130側起形成電磁波屏蔽膜的例子,還可以從絕緣保護層110側起按順序形成電磁波屏蔽膜。此時,使用帶有精細圖型的底膜,將精細圖型移印到黏著劑層130的表面,由此也能夠對黏著劑層130的表面的算術平均傾斜度和均方根傾斜度進行調節。
The above shows an example in which the electromagnetic wave shielding film is formed from the
【實施例】 [Example]
以下透過實施例來對本發明做出詳細說明。需要說明的是,以下實施例僅為示例,並不對本發明做出任何限定。 The following examples illustrate the present invention in detail. It should be noted that the following embodiments are only examples and do not limit the present invention in any way.
<特性評價> <Characteristic Evaluation>
〔滲色評價〕 〔Evaluation of bleeding〕
在電磁波屏蔽膜的絕緣保護層的表面,用絲網印版印刷1mm×2mm的英文字母和數字,透過用顯微鏡觀察英文字母和數字的形狀,對有無滲色做出評價。若不能確認有滲色則記為○,若確認發生滲色,並引起輪廓變形和油墨著色不均勻(cissing)則記為×。 On the surface of the insulating protective layer of the electromagnetic wave shielding film, English letters and numbers of 1mm×2mm are printed on a screen printing plate, and the shapes of the letters and numbers are observed with a microscope to evaluate whether there is bleeding. If bleeding could not be confirmed, it was recorded as ○, and if it was confirmed that bleeding occurred and caused contour deformation and ink coloring unevenness (cissing), it was recorded as ×.
〔視覺清晰度評價〕 〔Evaluation of visual clarity〕
透過觀察45°正反射的方法對視覺清晰度做出評價。在暗室中,在桌上高10cm處設置LED燈(SUPRABEAM製造),讓LED燈的照射口與鉛直方向成大致45°,將上述電磁波屏蔽膜放置於從照射口的正下方朝水平方向偏離10cm的位置處。然後,從電磁波屏蔽膜的放置位置朝水平方向偏離10cm、朝垂直方向偏離10cm的位置處,對用白色油墨印刷到絕緣保護層表面的3個英文字母和數字(縱0.5mm、橫0.2mm、間隔0.1mm)進行觀察,從而對易辨識度做出了評價。若能夠明確觀察到印刷文字的所有輪廓則記為○,若不能明確觀察到印刷文字則記為×。 The visual clarity is evaluated by observing the 45° regular reflection. In a dark room, set up an LED lamp (manufactured by SUPRABEAM) at a height of 10cm on the table, so that the irradiation port of the LED lamp is approximately 45° from the vertical direction, and the electromagnetic wave shielding film is placed directly below the irradiation port and deviated 10cm from the horizontal direction. Location. Then, from the place where the electromagnetic wave shielding film was placed 10 cm in the horizontal direction and 10 cm in the vertical direction, the three English letters and numbers (0.5 mm in length, 0.2 mm in width, Observed at an interval of 0.1mm) to evaluate the legibility. If all outlines of the printed text can be clearly observed, it is recorded as ○, and if the printed text cannot be clearly observed, it is recorded as ×.
〔算術平均傾斜度和均方根傾斜度的測量〕 [Measurement of arithmetic mean slope and root mean square slope]
用雷射顯微鏡(KEYENCE CORPORATION製造,VK-X200,50倍物鏡)觀察絕緣保護層表面的任意5視野,依據JIS B 0601(2001)對算術平均傾斜度和均方根傾斜度的平均值進行了測量。需要說明的是,基準長度設為280μm。 A laser microscope (manufactured by KEYENCE CORPORATION, VK-X200, 50 times objective lens) was used to observe any 5 fields of view on the surface of the insulating protective layer. According to JIS B 0601 (2001), the average value of the arithmetic mean tilt and the root mean square tilt was measured. measuring. It should be noted that the reference length is set to 280 μm.
〔L*值的測量〕 [Measurement of L* value]
用積分球分光測色儀(X-Rite公司製造,Ci64,鎢絲燈)測量了L*值。 The L* value was measured with an integrating sphere spectrophotometer (manufactured by X-Rite, Ci64, tungsten lamp).
〔光澤度的測量〕 〔Measurement of gloss〕
60°光澤度和85°光澤度用BYK-Gardner光澤度計(攜帶式光澤度計)進行了測量。 60° gloss and 85° gloss were measured with BYK-Gardner gloss meter (portable gloss meter).
(實施例1) (Example 1)
-導電性黏著劑層的製備- -Preparation of conductive adhesive layer-
向甲苯中添加100質量份的雙酚A型環氧系樹脂(三菱化學(株)製造,jER1256)、0.1質量份的固化劑(三菱化學(株)製造,ST14)、47質量份的呈球状且平均粒徑為10μm的銀包銅粉,保證固形物含量達到20質量%,並進行攪拌混合,製備出具有導電性的黏著劑層組合物。將製得的黏著劑層組合物塗佈到表面經過脫模處理的PET膜上,透過加熱乾燥,在底膜表面形成黏著劑層。 100 parts by mass of bisphenol A epoxy resin (manufactured by Mitsubishi Chemical Co., Ltd., jER1256), 0.1 parts by mass curing agent (manufactured by Mitsubishi Chemical Co., Ltd., ST14), and 47 parts by mass in a spherical shape were added to toluene In addition, the silver-coated copper powder with an average particle diameter of 10 μm ensures that the solid content reaches 20% by mass, and is stirred and mixed to prepare a conductive adhesive layer composition. The prepared adhesive layer composition is coated on the PET film whose surface has been demolded, and dried by heating to form an adhesive layer on the surface of the base film.
-屏蔽層的製備- -Preparation of shielding layer-
在製得的黏著劑層表面,藉由蒸鍍法形成了厚0.1μm的鍍銀層。 On the surface of the prepared adhesive layer, a silver-plated layer with a thickness of 0.1 μm was formed by an evaporation method.
-絕緣保護層的製備- -Preparation of insulating protective layer-
向甲苯中添加100質量份的雙酚A型環氧系樹脂(三菱化學(株)製造,jER1256)、0.1質量份的固化劑(三菱化學(株)製造,ST14)、15質量份的黑色系著色劑即碳粒子(Tokai Carbon Co.,Ltd.製造,TOKABLACK # 8300/F)、10質量份的微粒即平均粒徑為6μm的氨基甲酸乙酯樹脂粒子,保證固形物含量達到20質量%,製備出絕緣保護層組合物。將該組合物塗佈到製得的屏蔽層上,進行加熱乾燥而製得實施例1的電磁波屏蔽膜。 Add 100 parts by mass of bisphenol A epoxy resin (manufactured by Mitsubishi Chemical Corporation, jER1256), 0.1 parts by mass of curing agent (manufactured by Mitsubishi Chemical Corporation, ST14), and 15 parts by mass of black type epoxy resin to toluene Tokai Carbon Particles Co., Ltd., TOKABLACK # 8300/F), 10 parts by mass of fine particles, that is, urethane resin particles with an average particle diameter of 6 μm, ensure that the solid content reaches 20% by mass, and prepare an insulating protective layer composition. The composition was applied on the shielding layer prepared, and heated and dried to prepare the electromagnetic wave shielding film of Example 1.
製得的絕緣保護層表面的算術平均傾斜度為43°,均方根傾斜度為50°,L*值為18,60°光澤度為0.2%,85°光澤度為0.3%。對有無滲色做出評價,未觀察到油墨著色不均勻等,確認沒有滲色。印刷文字的視覺清晰度也良好。 The arithmetic mean inclination of the insulating protective layer surface is 43°, the root mean square inclination is 50°, the L* value is 18, the 60° gloss is 0.2%, and the 85° gloss is 0.3%. The presence or absence of bleeding was evaluated, and no unevenness in ink coloration was observed, and no bleeding was confirmed. The visual clarity of printed text is also good.
(實施例2) (Example 2)
實施例2除了將向絕緣保護層組合物添加的微粒變更為10質量份的平均粒徑為2μm的氨基甲酸乙酯樹脂粒子以外,其他與實施例1相同。製得的絕緣保護層表面的算術平均傾斜度為32°,均方根傾斜度為39°,L*值為20,60°光澤度為1.1%,85°光澤度為2.3%。對有無滲色做出評價,未觀察到油墨著色不均勻等,確認沒有滲色。印刷文字的視覺清晰度也良好。 Example 2 is the same as Example 1 except that the fine particles added to the insulating protective layer composition are changed to 10 parts by mass of urethane resin particles having an average particle diameter of 2 μm. The arithmetic mean inclination of the surface of the insulating protective layer prepared was 32°, the root mean square inclination was 39°, the L* value was 20, the 60° gloss was 1.1%, and the 85° gloss was 2.3%. The presence or absence of bleeding was evaluated, and no unevenness in ink coloration was observed, and no bleeding was confirmed. The visual clarity of printed text is also good.
(實施例3) (Example 3)
實施例3除了將向絕緣保護層組合物添加的微粒變更為10質量份的平均粒徑為5μm的氨基甲酸乙酯樹脂粒子以外,其他與實施例1相同。製得的絕緣保護層表面的算術平均傾斜度為46°,均方根傾斜度為52°,L*值為21,60°光澤度為0.3%,85°光澤度為2.6%。對有無滲色做出評價,未觀察到油墨著色不均勻等,確認沒有滲色。印刷文字的視覺清晰度也良好。 Example 3 is the same as Example 1 except that the fine particles added to the insulating protective layer composition are changed to 10 parts by mass of urethane resin particles having an average particle diameter of 5 μm. The arithmetic mean inclination of the insulating protective layer surface is 46°, the root mean square inclination is 52°, the L* value is 21, the 60° gloss is 0.3%, and the 85° gloss is 2.6%. The presence or absence of bleeding was evaluated, and no unevenness in ink coloration was observed, and no bleeding was confirmed. The visual clarity of printed text is also good.
(實施例4) (Example 4)
實施例4除了將向絕緣保護層組合物添加的微粒變更為13質量份的平均粒徑為5μm的苯乙烯-丙烯腈樹脂粒子以外,其他與實施例1相同。製得的絕緣保護層表面的算術平均傾斜度為 35°,均方根傾斜度為43°,L*值為18,60°光澤度為0.8%,85°光澤度為2.1%。對有無滲色做出評價,印刷文字的視覺清晰度良好。 Example 4 is the same as Example 1 except that the fine particles added to the insulating protective layer composition are changed to 13 parts by mass of styrene-acrylonitrile resin particles having an average particle diameter of 5 μm. The arithmetic mean slope of the surface of the insulating protective layer is 35°, the root mean square tilt is 43°, the L* value is 18, the 60° gloss is 0.8%, and the 85° gloss is 2.1%. Evaluate whether there is bleeding, and the visual clarity of the printed text is good.
(比較例1) (Comparative example 1)
比較例1將向絕緣保護層組合物添加的黑色系著色劑變更為5質量份,且沒有添加微粒。底膜表面經過脫模處理並具有凹凸形狀,將絕緣保護層組合物塗佈到底膜表面並乾燥,在底膜與屏蔽層貼合後,從絕緣保護層表面剝離底膜,由此形成凹凸移印至自身的絕緣保護層。其他條件與實施例1相同。製得的絕緣保護層表面的算術平均傾斜度為22°,均方根傾斜度為31°,L*值為28,60°光澤度為2.0%,85°光澤度為43.4%。對有無滲色做出評價,確認有油墨著色不均勻。印刷文字在反射光的遮掩下不能辨識。 In Comparative Example 1, the black colorant added to the insulating protective layer composition was changed to 5 parts by mass, and fine particles were not added. The surface of the base film has undergone a mold release treatment and has an uneven shape. The insulating protective layer composition is applied to the surface of the base film and dried. After the base film and the shielding layer are bonded, the base film is peeled off from the surface of the insulating protective layer, thereby forming uneven migration Printed on its own insulating protective layer. Other conditions are the same as in Example 1. The arithmetic mean inclination of the insulating protective layer surface was 22°, the root mean square inclination was 31°, the L* value was 28, the 60° gloss was 2.0%, and the 85° gloss was 43.4%. Evaluate whether there is bleeding, and confirm that there is uneven ink coloration. The printed text cannot be distinguished under the cover of reflected light.
(比較例2) (Comparative example 2)
比較例2除了將向絕緣保護層組合物添加的黑色系著色劑變更為5質量份,且沒有添加微粒以外,其他與實施例1相同。製得的絕緣保護層表面的算術平均傾斜度為16°,均方根傾斜度為25°,L*值為27,60°光澤度為11.1%,85°光澤度為36.7%。對有無滲色做出評價,確認有油墨著色不均勻。印刷文字在反射光的遮掩下不能辨識。 Comparative Example 2 is the same as Example 1 except that the black colorant added to the insulating protective layer composition is changed to 5 parts by mass and fine particles are not added. The arithmetic mean inclination of the insulating protective layer surface is 16°, the root mean square inclination is 25°, the L* value is 27, the 60° gloss is 11.1%, and the 85° gloss is 36.7%. Evaluate whether there is bleeding, and confirm that there is uneven ink coloration. The printed text cannot be distinguished under the cover of reflected light.
(比較例3) (Comparative example 3)
比較例3除了將向絕緣保護層組合物添加的黑色系著色劑變更為5質量份,且沒有添加微粒以外,其他與實施例1相同。製得的絕緣保護層表面的算術平均傾斜度為23°,均方根傾斜度為30°,L*值為25,60°光澤度為4.2%,85°光澤度為33.1%。對有無滲色做出評價,確認有油墨著色不均勻。印刷文字在反射 光的遮掩下不能辨識。 Comparative Example 3 was the same as Example 1 except that the black colorant added to the insulating protective layer composition was changed to 5 parts by mass and fine particles were not added. The arithmetic mean inclination of the insulating protective layer surface was 23°, the root mean square inclination was 30°, the L* value was 25, the 60° gloss was 4.2%, and the 85° gloss was 33.1%. Evaluate whether there is bleeding, and confirm that there is uneven ink coloration. Printed text in reflection Cannot be recognized under the cover of light.
(比較例4) (Comparative Example 4)
比較例4除了用表面粗糙度為0.6μm的膜作底膜以外,其他與比較例1相同。製得的絕緣保護層表面的算術平均傾斜度為13°,均方根傾斜度為19°,L*值為28,60°光澤度為8.0%,85°光澤度為43.1%。印刷文字在反射光的遮掩下不能辨識。 Comparative Example 4 was the same as Comparative Example 1 except that a film with a surface roughness of 0.6 μm was used as the base film. The arithmetic mean inclination of the insulating protective layer surface was 13°, the root mean square inclination was 19°, the L* value was 28, the 60° gloss was 8.0%, and the 85° gloss was 43.1%. The printed text cannot be distinguished under the cover of reflected light.
(比較例5) (Comparative Example 5)
比較例5除了將向絕緣保護層組合物添加的微粒變更為3質量份的平均粒徑為7μm的氨基甲酸乙酯樹脂粒子以外,其他與實施例1相同。製得的絕緣保護層表面的算術平均傾斜度為14°,均方根傾斜度為20°,L*值為26,60°光澤度為6.1%,85°光澤度為36.9%。印刷文字在反射光的遮掩下不能辨識。 Comparative Example 5 is the same as Example 1 except that the fine particles added to the insulating protective layer composition are changed to 3 parts by mass of urethane resin particles having an average particle diameter of 7 μm. The arithmetic mean inclination of the insulating protective layer surface was 14°, the root mean square inclination was 20°, the L* value was 26, the 60° gloss was 6.1%, and the 85° gloss was 36.9%. The printed text cannot be distinguished under the cover of reflected light.
表1表示各實施例和比較例中絕緣保護層的組成和特性一覽。 Table 1 shows a list of the composition and characteristics of the insulating protective layer in each example and comparative example.
【表1】
實施例1~3的絕緣保護層表面的算術平均傾斜度在30°以上,上述絕緣保護層均被確認沒有油墨著色不均勻,且印刷性 良好。與比較例的絕緣保護層相比,實施例1~3的絕緣保護層沒有滲色,且視覺清晰度良好。 The arithmetic mean inclination of the surface of the insulating protective layer of Examples 1 to 3 is above 30°, and the above insulating protective layer is confirmed to have no uneven ink coloring and printability good. Compared with the insulating protective layer of the comparative example, the insulating protective layer of Examples 1 to 3 did not bleed and had good visual clarity.
〔產業上的可利用性〕 〔Industrial availability〕
本發明的電磁波屏蔽膜能夠高精度地印刷較小的文字等,作為一種用於電子裝置等的電磁波屏蔽膜很有用。 The electromagnetic wave shielding film of the present invention can print small characters and the like with high accuracy, and is useful as an electromagnetic wave shielding film for electronic devices and the like.
110‧‧‧絕緣保護層 110‧‧‧Insulation protection layer
120‧‧‧屏蔽層 120‧‧‧Shielding layer
130‧‧‧黏著劑層 130‧‧‧Adhesive layer
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016-024914 | 2016-02-12 | ||
JP2016024914 | 2016-02-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
TW201803434A TW201803434A (en) | 2018-01-16 |
TWI700982B true TWI700982B (en) | 2020-08-01 |
Family
ID=59563840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW106104503A TWI700982B (en) | 2016-02-12 | 2017-02-10 | Electromagnetic wave shielding film |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP6621487B2 (en) |
KR (1) | KR102432750B1 (en) |
CN (1) | CN108605425B (en) |
TW (1) | TWI700982B (en) |
WO (1) | WO2017138638A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111818784B (en) * | 2016-09-06 | 2023-03-24 | 拓自达电线株式会社 | Electromagnetic wave shielding film |
CN111201137B (en) * | 2017-10-10 | 2022-11-01 | 东丽株式会社 | Film |
JP6863908B2 (en) * | 2018-01-12 | 2021-04-21 | タツタ電線株式会社 | Electromagnetic wave shield film |
TW201943330A (en) * | 2018-03-29 | 2019-11-01 | 日商拓自達電線股份有限公司 | Resin composition for protective layer of electromagnetic wave-shielding film, electromagnetic wave-shielding film, and method for producing electromagnetic wave-shielding film |
JP6597927B1 (en) * | 2019-06-18 | 2019-10-30 | 東洋インキScホールディングス株式会社 | Electromagnetic shielding sheet and electromagnetic shielding wiring circuit board |
TWI764350B (en) * | 2020-10-30 | 2022-05-11 | 臻鼎科技股份有限公司 | Electromagnetic shielding film and manufacturing method |
TW202402154A (en) * | 2022-06-28 | 2024-01-01 | 日商拓自達電線股份有限公司 | Electromagnetic shielding film |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5796690B1 (en) * | 2015-02-02 | 2015-10-21 | 東洋インキScホールディングス株式会社 | Electromagnetic shielding sheet and printed wiring board |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4360774B2 (en) * | 2002-03-29 | 2009-11-11 | タツタ電線株式会社 | Reinforcing shield film and shield flexible printed wiring board |
JP4201548B2 (en) | 2002-07-08 | 2008-12-24 | タツタ電線株式会社 | SHIELD FILM, SHIELD FLEXIBLE PRINTED WIRING BOARD AND METHOD FOR PRODUCING THEM |
JP5239444B2 (en) * | 2008-03-26 | 2013-07-17 | 大日本印刷株式会社 | Release paper manufacturing method and release paper manufacturing apparatus |
US8138429B2 (en) * | 2008-12-17 | 2012-03-20 | 3M Innovative Properties Company | Electromagnetic shielding article |
CN103120042B (en) * | 2010-06-23 | 2016-03-23 | 印可得株式会社 | The preparation method of electromagnetic shielding film and electromagnetic shielding film prepared therefrom |
JP2014078574A (en) | 2012-10-10 | 2014-05-01 | Toyo Ink Sc Holdings Co Ltd | Electromagnetic wave-shielding coverlay film, method for manufacturing flexible printed wiring board, and flexible printed wiring board |
-
2017
- 2017-02-10 TW TW106104503A patent/TWI700982B/en active
- 2017-02-10 JP JP2017567011A patent/JP6621487B2/en active Active
- 2017-02-10 WO PCT/JP2017/004941 patent/WO2017138638A1/en active Application Filing
- 2017-02-10 KR KR1020187018127A patent/KR102432750B1/en active IP Right Grant
- 2017-02-10 CN CN201780010708.7A patent/CN108605425B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5796690B1 (en) * | 2015-02-02 | 2015-10-21 | 東洋インキScホールディングス株式会社 | Electromagnetic shielding sheet and printed wiring board |
Also Published As
Publication number | Publication date |
---|---|
JPWO2017138638A1 (en) | 2018-12-06 |
KR20180113500A (en) | 2018-10-16 |
CN108605425B (en) | 2020-04-07 |
JP6621487B2 (en) | 2019-12-18 |
KR102432750B1 (en) | 2022-08-12 |
TW201803434A (en) | 2018-01-16 |
WO2017138638A1 (en) | 2017-08-17 |
CN108605425A (en) | 2018-09-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI700982B (en) | Electromagnetic wave shielding film | |
KR102567422B1 (en) | Electromagnetic wave shield film | |
JP6722370B2 (en) | Adhesive film for printed wiring boards | |
TWI768219B (en) | Adhesive film for printed wiring board | |
TWI829647B (en) | Electromagnetic wave shielding film | |
JP7410182B2 (en) | shape transfer film | |
CN106211702A (en) | There is the fin of Electromagnetic Interference function of shielding | |
CN204733501U (en) | There is the fin of Electromagnetic Interference function of shielding | |
TWI844723B (en) | Shape transfer film |