TW201311133A - Electromagnetic shielding method and product by the same - Google Patents
Electromagnetic shielding method and product by the same Download PDFInfo
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- TW201311133A TW201311133A TW100130196A TW100130196A TW201311133A TW 201311133 A TW201311133 A TW 201311133A TW 100130196 A TW100130196 A TW 100130196A TW 100130196 A TW100130196 A TW 100130196A TW 201311133 A TW201311133 A TW 201311133A
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本發明涉及一種電磁遮罩方法及其製品。The invention relates to an electromagnetic masking method and an article thereof.
習知技術,通常採用金屬外罩、沉積有金屬層的或結合有金屬薄片的塑膠複合遮罩或金屬纖維複合遮罩來控制電磁干擾。然而,上述遮罩均存在以下缺點:所佔空間大、生產成本較高、安裝時難以實現遮罩與印刷電路板(PCB)或柔性線路板(FPC)之間無縫安裝,如此導致遮罩效率低下,PCB板或FPC板上的電子元件產生的熱量難以散發出去,使得電子元件工作性能不穩定,甚至損壞電子元件。Conventional techniques generally employ a metal cover, a metal composite layer or a metal composite mask or a metal fiber composite mask combined with a metal foil to control electromagnetic interference. However, the above-mentioned masks all have the following disadvantages: large space occupation, high production cost, and difficulty in achieving seamless mounting between the mask and the printed circuit board (PCB) or the flexible wiring board (FPC) during installation, thus causing the mask Inefficient, the heat generated by the electronic components on the PCB or FPC board is difficult to dissipate, making the electronic components unstable and even damaging the electronic components.
於PCB板或FPC板上直接沉積樹脂絕緣層,再於該絕緣層上電鍍或化學鍍金屬層,可實現電磁遮罩。然,為了保證該樹脂絕緣層與PCB板或FPC板之間有良好的結合力,避免絕緣層發生剝落或龜裂等現象,對所使用的樹脂的黏度值有嚴格的限制。而能滿足上述黏度要求的樹脂只限於某些特殊的有機樹脂,這些特殊的有機樹脂成分多、結構複雜、難以製造。此外,該絕緣層的厚度較大(難以控制在奈米級別),因而對電子元件的散熱存在不良影響。另外,電鍍或化學鍍金屬層對環境的污染較大。An electromagnetic insulating layer can be realized by directly depositing a resin insulating layer on a PCB board or an FPC board, and then plating or electrolessly plating a metal layer on the insulating layer. However, in order to ensure a good bonding force between the resin insulating layer and the PCB board or the FPC board, and to avoid peeling or cracking of the insulating layer, the viscosity value of the resin to be used is strictly limited. The resin which satisfies the above viscosity requirements is limited to certain special organic resins, and these special organic resin components are numerous, complicated in structure, and difficult to manufacture. Further, the insulating layer has a large thickness (it is difficult to control at the nanometer level), and thus has an adverse effect on heat dissipation of the electronic component. In addition, the plating or electroless metal plating layer is highly polluting to the environment.
鑒於此,本發明提供一種電磁遮罩方法。In view of this, the present invention provides an electromagnetic masking method.
另外,本發明還提供一種經由上述電磁遮罩方法製得的製品。In addition, the present invention also provides an article produced by the above electromagnetic masking method.
一種製品,包括基體、形成於該基體上的一絕緣層及形成於該絕緣層上的導電層,該絕緣層為矽-氧-氮層,該導電層為為銅層、鎳層、鋁層或銀層。An article comprising a substrate, an insulating layer formed on the substrate, and a conductive layer formed on the insulating layer, the insulating layer being a germanium-oxygen-nitrogen layer, the conductive layer being a copper layer, a nickel layer, and an aluminum layer Or silver layer.
一種電磁遮罩方法,其包括如下步驟:An electromagnetic mask method includes the following steps:
提供基體;Providing a substrate;
採用真空鍍膜法,以矽靶為靶材,以氧氣及氮氣為反應氣體,於基體上形成一絕緣層,該絕緣層為矽-氧-氮層;The vacuum coating method is adopted, the ruthenium target is used as a target, and oxygen and nitrogen are used as reaction gases to form an insulating layer on the substrate, and the insulating layer is a 矽-oxygen-nitrogen layer;
採用真空鍍膜法,以銅靶、鎳靶、鋁靶及銀靶中的一種為靶材,於該絕緣層上形成一導電層,該導電層為銅層、鎳層、鋁層或銀層。A conductive coating is formed on the insulating layer by using a vacuum coating method, one of a copper target, a nickel target, an aluminum target, and a silver target, and the conductive layer is a copper layer, a nickel layer, an aluminum layer or a silver layer.
所述電磁遮罩方法簡單快捷、幾乎沒有環境污染,且形成該絕緣層的材料簡單、易於獲得。The electromagnetic mask method is simple and quick, has little environmental pollution, and the material forming the insulating layer is simple and easy to obtain.
由於藉由真空鍍膜的方式形成的所述絕緣層及導電層的膜厚較小,可使電子元件產生的熱量快速的散發出去,提高了電子元件性能的穩定性。另一方面,該絕緣層及導電層所佔的空間小,質量輕。Since the thickness of the insulating layer and the conductive layer formed by vacuum coating is small, the heat generated by the electronic component can be quickly dissipated, and the stability of the performance of the electronic component is improved. On the other hand, the insulating layer and the conductive layer occupy a small space and are light in weight.
此外,以真空鍍膜方法形成的絕緣層及導電層與基體之間具有良好的結合力,可避免在使用過程中該絕緣層和/或導電層發生剝落或龜裂而降低製品的電磁遮罩性能。所述絕緣層和導電層在平面處、凹處及折縫處沉積均勻,且可以做到與基體無縫結合,如此提高了基體的電磁遮罩性能。In addition, the insulating layer formed by the vacuum coating method and the conductive layer and the substrate have a good bonding force, which can prevent the insulating layer and/or the conductive layer from being peeled off or cracked during use to reduce the electromagnetic shielding performance of the product. . The insulating layer and the conductive layer are uniformly deposited at the plane, the recess and the crease, and can be seamlessly combined with the substrate, thus improving the electromagnetic shielding performance of the substrate.
請參閱圖1,本發明一較佳實施方式電磁遮罩方法主要包括如下步驟:Referring to FIG. 1 , an electromagnetic mask method according to a preferred embodiment of the present invention mainly includes the following steps:
提供一基體11,該基體11可為印刷電路板或柔性線路板,還可為手機、數位相機及筆記本電腦等可攜帶式電子產品的殼體。A substrate 11 is provided. The substrate 11 can be a printed circuit board or a flexible circuit board, and can also be a housing of a portable electronic product such as a mobile phone, a digital camera, and a notebook computer.
當所述基體11為印刷電路板或柔性線路板時,所述基體11上形成有至少一電子元件112。When the base 11 is a printed circuit board or a flexible circuit board, at least one electronic component 112 is formed on the base 11.
對基體11的表面進行電漿清洗,以去除基體11表面的油污基體,以及改善基體11表面與後續鍍層的結合力。結合參閱圖2,提供一真空鍍膜機100,該真空鍍膜機100包括一鍍膜室20及連接於鍍膜室20的一真空泵30,真空泵30用以對鍍膜室20抽真空。該鍍膜室20內設有轉架(未圖示)、相對設置的二矽靶22及相對設置的二金屬靶23。轉架帶動基體11沿圓形的軌跡21公轉,且基體11在沿軌跡21公轉時亦自轉。每一矽靶22及每一金屬靶23的兩端均設有氣源通道24,氣體經該氣源通道24進入所述鍍膜室20中。其中,所述金屬靶23的材質為銅、鎳、鋁或銀。The surface of the substrate 11 is subjected to plasma cleaning to remove the oil-stained substrate on the surface of the substrate 11, and to improve the bonding force between the surface of the substrate 11 and the subsequent plating. Referring to FIG. 2, a vacuum coater 100 is provided. The vacuum coater 100 includes a coating chamber 20 and a vacuum pump 30 connected to the coating chamber 20. The vacuum pump 30 is used to evacuate the coating chamber 20. The coating chamber 20 is provided with a turret (not shown), a counter target 22 disposed opposite to each other, and a second metal target 23 disposed opposite to each other. The turret drives the base body 11 to revolve along a circular trajectory 21, and the base body 11 also rotates when revolving along the trajectory 21. A gas source passage 24 is provided at each end of each of the target 22 and each of the metal targets 23, and the gas enters the coating chamber 20 through the gas source passage 24. The material of the metal target 23 is copper, nickel, aluminum or silver.
該電漿清洗的具體操作及工藝參數可為:將基體11固定於真空鍍膜機100的鍍膜室20的轉架上,將該鍍膜室20抽真空至1.4×10-3~2.7×10-3Pa,然後向鍍膜室20內通入流量約為100~400sccm(標準狀態毫升/分鐘)的氬氣(純度為99.999%),並施加-200~-500V的偏壓於基體11,對基體11或基體11及電子元件112的表面進行電漿清洗,清洗時間為10~20min。The specific operation and process parameters of the plasma cleaning may be: fixing the substrate 11 to the rotating frame of the coating chamber 20 of the vacuum coating machine 100, and vacuuming the coating chamber 20 to 1.4×10 -3 to 2.7×10 -3 . Pa, then argon gas (purity of 99.999%) having a flow rate of about 100 to 400 sccm (standard state ML/min) is introduced into the coating chamber 20, and a bias of -200 to -500 V is applied to the substrate 11, to the substrate 11 Or the surface of the substrate 11 and the electronic component 112 is plasma-cleaned, and the cleaning time is 10-20 min.
採用磁控濺射鍍膜法,在經電漿清洗後的基體11表面濺鍍絕緣層13。該絕緣層13為矽-氧-氮(Si-O-N)層。濺鍍該絕緣層13在所述真空鍍膜機100中進行。開啟矽靶22,並設定矽靶22的功率為5~8kw;以氧氣及氮氣為反應氣體,調節氧氣的流量為50~200sccm及氮氣的流量為80~300sccm,以氬氣為工作氣體,調節氬氣的流量為100~300sccm。濺鍍時,對基體11施加-100~-300V的偏壓,並加熱所述鍍膜室20至溫度為20~80℃(即鍍膜溫度為20~80℃),鍍膜時間為15~35min。該絕緣層13的厚度為0.8~5μm。The insulating layer 13 is sputtered on the surface of the substrate 11 after plasma cleaning by a magnetron sputtering method. The insulating layer 13 is a bismuth-oxygen-nitrogen (Si-O-N) layer. Sputtering the insulating layer 13 is performed in the vacuum coater 100. Open the target 22 and set the power of the target 22 to 5~8kw; use oxygen and nitrogen as the reaction gas, adjust the flow rate of oxygen to 50~200sccm and the flow rate of nitrogen to 80~300sccm, and adjust the argon gas as the working gas. The flow rate of argon gas is 100~300sccm. During sputtering, a bias voltage of -100 to -300 V is applied to the substrate 11, and the coating chamber 20 is heated to a temperature of 20 to 80 ° C (ie, a coating temperature of 20 to 80 ° C), and the coating time is 15 to 35 minutes. The insulating layer 13 has a thickness of 0.8 to 5 μm.
當所述基體11為印刷電路板或柔性線路板時,所述絕緣層13沉積在所述電子元件112的表面及基體11的表面,以使電子元件112被封閉於所述絕緣層13內。When the substrate 11 is a printed circuit board or a flexible wiring board, the insulating layer 13 is deposited on the surface of the electronic component 112 and the surface of the substrate 11 such that the electronic component 112 is enclosed in the insulating layer 13.
採用磁控濺射鍍膜法,在所述絕緣層13上濺射一導電層15。所述導電層15為銅層、鎳層、鋁層或銀層。開啟金屬靶23,並設定金屬靶23的功率為10~15kw;以氬氣為工作氣體,調節氬氣的流量為100~300sccm。濺鍍時,對基體11施加-100~-300V的偏壓,並保持所述鍍膜室20的溫度為20~80℃(即鍍膜溫度為20~80℃),鍍膜時間為3~20min。A conductive layer 15 is sputtered on the insulating layer 13 by magnetron sputtering. The conductive layer 15 is a copper layer, a nickel layer, an aluminum layer or a silver layer. The metal target 23 is turned on, and the power of the metal target 23 is set to 10 to 15 kW; and the flow rate of the argon gas is adjusted to 100 to 300 sccm using argon gas as the working gas. During sputtering, a bias voltage of -100 to -300 V is applied to the substrate 11, and the temperature of the coating chamber 20 is maintained at 20 to 80 ° C (that is, the coating temperature is 20 to 80 ° C), and the coating time is 3 to 20 minutes.
可以理解的,若只需對基體11的部分區域進行電磁遮罩處理時,可採用遮蔽治具(圖未示)對不需要電磁遮罩的區域進行遮蔽。It can be understood that if only a part of the base 11 is subjected to electromagnetic shielding treatment, a shielding fixture (not shown) may be used to shield the area that does not require the electromagnetic mask.
可以理解的,所述絕緣層13及導電層15還可藉由真空蒸鍍及電弧電漿鍍膜等方式形成。It can be understood that the insulating layer 13 and the conductive layer 15 can also be formed by vacuum evaporation, arc plasma plating or the like.
所述電磁遮罩方法簡單快捷、幾乎沒有環境污染,且形成該絕緣層13的材料簡單、易於獲得。The electromagnetic mask method is simple and quick, has little environmental pollution, and the material forming the insulating layer 13 is simple and easy to obtain.
一種經由上述電磁遮罩方法製得的製品10包括一基體11、形成於該基體11上的一絕緣層13及形成於該絕緣層13上的導電層15。An article 10 produced by the above electromagnetic masking method includes a substrate 11, an insulating layer 13 formed on the substrate 11, and a conductive layer 15 formed on the insulating layer 13.
所述基體11為印刷電路板或柔性線路板,還可為手機、數位相機及筆記本電腦等可攜帶式電子產品的殼體。The base 11 is a printed circuit board or a flexible circuit board, and can also be a housing of a portable electronic product such as a mobile phone, a digital camera, and a notebook computer.
當所述基體11為印刷電路板或柔性線路板時,所述基體11上形成有至少一電子元件112,所述絕緣層13沉積在所述電子元件112的表面及基體11的表面,以使電子元件112被封閉於所述絕緣層13內。When the substrate 11 is a printed circuit board or a flexible circuit board, at least one electronic component 112 is formed on the substrate 11, and the insulating layer 13 is deposited on the surface of the electronic component 112 and the surface of the substrate 11 so that The electronic component 112 is enclosed within the insulating layer 13.
該絕緣層13為矽-氧-氮層。該絕緣層13的厚度為0.8~5μm,優選為2~3μm。The insulating layer 13 is a yttrium-oxygen-nitrogen layer. The insulating layer 13 has a thickness of 0.8 to 5 μm, preferably 2 to 3 μm.
該導電層15為銅層、鎳層、鋁層或銀層。該導電層15的厚度以完全覆蓋所述絕緣層13 為佳,優選為0.5~2μm,更優選為1~2μm。The conductive layer 15 is a copper layer, a nickel layer, an aluminum layer or a silver layer. The thickness of the conductive layer 15 is preferably completely covering the insulating layer 13, and is preferably 0.5 to 2 μm, and more preferably 1 to 2 μm.
該絕緣層13及導電層15藉由真空鍍膜的方式形成。The insulating layer 13 and the conductive layer 15 are formed by vacuum plating.
由於藉由真空鍍膜的方式形成的所述絕緣層13及導電層15的膜厚較小,可使電子元件112產生的熱量快速的散發出去,提高了電子元件112性能的穩定性。另一方面,該絕緣層13及導電層15所佔的空間小,質量輕。Since the thickness of the insulating layer 13 and the conductive layer 15 formed by vacuum coating is small, heat generated by the electronic component 112 can be quickly dissipated, and the performance of the electronic component 112 is improved. On the other hand, the insulating layer 13 and the conductive layer 15 occupy a small space and are light in weight.
除此之外,以真空鍍膜方法形成的絕緣層13及導電層15與基體11、電子元件112之間具有良好的結合力,可避免在使用過程中該絕緣層13和/或導電層15發生剝落或龜裂而降低製品10的電磁遮罩性能。所述絕緣層13和導電層15在平面處、凹處及折縫處沉積均勻,且可以做到與基體11無縫結合,如此進一步提高了基體11的電磁遮罩性能。In addition, the insulating layer 13 and the conductive layer 15 formed by the vacuum coating method have a good bonding force with the substrate 11 and the electronic component 112, so that the insulating layer 13 and/or the conductive layer 15 can be prevented from occurring during use. Peeling or cracking reduces the electromagnetic masking properties of the article 10. The insulating layer 13 and the conductive layer 15 are uniformly deposited at the plane, the recess and the crease, and can be seamlessly bonded to the substrate 11, thus further improving the electromagnetic shielding performance of the substrate 11.
10...製品10. . . product
11...基體11. . . Matrix
112...電子元件112. . . Electronic component
13...絕緣層13. . . Insulation
15...導電層15. . . Conductive layer
100...真空鍍膜機100. . . Vacuum coating machine
20...鍍膜室20. . . Coating chamber
21...軌跡twenty one. . . Trajectory
22...矽靶twenty two. . . Target
23...金屬靶twenty three. . . Metal target
24...氣源通道twenty four. . . Air source channel
30...真空泵30. . . Vacuum pump
圖1係本發明一較佳實施例製品的剖視圖。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view of an article of a preferred embodiment of the present invention.
圖2係本發明一較佳實施例真空鍍膜機的示意圖。2 is a schematic view of a vacuum coater according to a preferred embodiment of the present invention.
10...製品10. . . product
11...基體11. . . Matrix
112...電子元件112. . . Electronic component
13...絕緣層13. . . Insulation
15...導電層15. . . Conductive layer
Claims (11)
提供基體;
採用真空鍍膜法,以矽靶為靶材,以氧氣及氮氣為反應氣體,於基體上形成一絕緣層,該絕緣層為矽-氧-氮層;
採用真空鍍膜法,以銅靶、鎳靶、鋁靶及銀靶中的一種為靶材,於該絕緣層上形成一導電層,該導電層為銅層、鎳層、鋁層或銀層。An electromagnetic mask method includes the following steps:
Providing a substrate;
The vacuum coating method is adopted, the ruthenium target is used as a target, and oxygen and nitrogen are used as reaction gases to form an insulating layer on the substrate, and the insulating layer is a 矽-oxygen-nitrogen layer;
A conductive coating is formed on the insulating layer by using a vacuum coating method, one of a copper target, a nickel target, an aluminum target, and a silver target, and the conductive layer is a copper layer, a nickel layer, an aluminum layer or a silver layer.
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CN104792251A (en) * | 2014-01-16 | 2015-07-22 | 中国科学院西安光学精密机械研究所 | Structure and making method of induction synchronizer shielding film |
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