1260198 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、內容、實施方式及圖式簡單說明） 1 .發明所屬之技術領域 本發明係關於電磁干擾（Ε Μ I)防止對策用之零件和Ε Μ I 防止對策之方法，其係針對在具有作爲代表個人電腦那樣 之C P U和Μ P U，執行輸出入裝置間資料之收發那樣之資 訊處理裝置或機器上進行資料傳送之匯流排配線（b U s 1 i n e ) 實施電磁干擾防止對策用者。 2 .先前技術 一般，依傳播路徑分類噪音的話，能分成放射噪音及傳 導噪音。對於放射噪音係採使用金屬遮蔽以防止Ε Μ I之 對策，傳導噪音進一步可分爲正態噪音（normal mode noise) 及共態噪音（common mode noise)兩類。對正態噪音，自 來係採用在信號線上插入電感器和電容器，Ε Μ I過濾器等 之對策。 共態噪音係通過接地（ground)系而以介面電纜（interface cable)替代天線朝空中放射。近年來，因信號之高速數位 化，高頻率化，故對共態噪音之防止對策益形重要。 以往，對共態噪音通常係不採取對策。若須要採取對策 時才在配線中插入噪音去除用之各種過濾器等。但是，在 配線（Π n e )中插入過濾器之情形時須一度切斷已設置之信 號配線俾騰出插入過濾器之空間以行連接，這是極爲繁重 之作業。特別是，信號配線大多係爲形成在電路基板上之 導體圖案（pattern)。因此，一度切離後之導體圖案再行連 1260198 接係不容易。因此之故，最近，盛行假設以產生噪音爲前 提，事前預留及作好插入過濾器所需之空間和配線。但是 ，執行資訊處理裝置等上之資料之收發之匯流排配線甚爲 密集。因此之故，極難採取上述這些對策。 一般，執行Ε Μ I防止對策之情形時須具有噪音防止對 策之專業知識和經驗，要擬出對策須要很多時間。另外， 使用過濾器之價格高，構裝過濾器之空間多所限制，過濾 器之構裝作業不容易，及裝置整體製作所需之步驟多，從 而增加生產成本等，很多問題。特別是，不管噪音會產生 或不會產生都要事先預留空間，事先敷設好配線，可說是 非常無效虛耗之作業。 考慮近年各種機器皆要求要小巧，輕薄化，若要使用以 往之噪音防止對策方法以施行充份之噪音防止對策，且又 要實現小型化之電子機器的話，則不得不說係極爲困難。 因此，本發明之一目的在於提供EM I防止對策零件， 及EM I防止方法，其不必事先施設噪音防止對策用之裝 置，在構裝必要之元件並構成電路後，即便發現有噪音產 生之情形時仍能利用死空間（d e a d s p a c e )而實施充份之防 止對策。 3 .發明內容 本發明對特別須採取對策者係着眼於將介面電纜等作爲 天線而行放射之共態噪音，及近年來信號之高頻化所產生 之比較高頻率之噪音，本發明者等藉對先前提出之EMI抑 制用之複合磁性體施加磁場，提供提高效率之Ε Μ I防止對 1260198 策零件，而這零件係適用於Ε Μ I防止對策之方法者。 換言之，依本發明能製成Ε Μ I防止對策零件，其特徵爲 具備將軟磁性粉末分散於有機結合劑層中而成之複合磁性 體層和配置於前述複合磁性體層至少一部份上之將磁鐵粉 末分散在結合劑而成之複合磁鐵層，前述複合磁鐵層係對 前述複合磁性體層施加偏倚磁場。 另外，依本發明能得出Ε Μ I防止對策方法，其特徵爲以 在有機結合劑層中分散軟磁性粉末而成之複合磁性體層覆 蓋資訊處理裝置之匯流排配線之至少一部份，同時對該複 合磁性體層施加偏倚磁場。 4.實施方式 下面將參照圖面說明本發明之實施例。 第1圖係爲示出將本發明之第1實施例之Ε Μ I防止對策 零件1 1配置在C P U 5之匯流排配線6以實施Ε Μ I防止對策 之狀態之斜視圖。係示出部份被切削之EM I防止對策零 件1 1。匯流排配線6係連接C P U 5和未圖示之外部電路。 第1實施例，係爲執行電磁干擾抑制之裝置之Ε Μ I防止 對策零件1 1具有薄片狀之複合磁性體1。複合磁性體1 係由有機結合劑，和在分散於該有機結合劑中之表面上具 有氧化薄膜之金屬磁性體粉末作成之薄片形狀，在頻寬上 具有兩個不同之磁共振。在此複合磁性體1之一面上具備 複合磁鐵層2。此複合磁鐵層2係爲在有機結合劑之層中 分散S m C 〇 5永久磁鐵粉末並固化而成之物。另外，在複合 磁鐵層2不與複合磁性體1接鄰之另一面上設有黏結層3。 1260198 表1 軟磁性體粉末 Fe-Al-S i 合金 平均粒徑：1 〇 μ Π1 縱橫（A s p e c t)比：> 5 9 0重量份 有機結合劑 聚氨脂（polyurethane)樹脂 8重量份 異氰酸脂（isocyanate)化合物 2重量份 溶齊IJ 環己院（cyclohexane)和甲苯（toluene)化合物 4 0重量份 乙基溶纖劑（ethyl cellosolve) 6 5重量份 第2圖係爲示出將本發明之第2實施例之Ε ΜI防止對 策零件1 2鄰近匯流排配線7配置之狀態之斷面圖。屬於 電磁干擾抑制裝置之Ε Μ I防止對策零件1 2係爲在匯流排 配線7側由複合磁性體層1及配置在複合磁性體層1上之 複合磁鐵層2所形成之兩層構成。複合磁性體層1及複合 磁鐵層2係製作成與第1實施例上使用者相同之物，係爲 將複合磁性體層1配置在配線側使用之物。 第3圖係爲示出將本發明之第3實施例之Ε ΜI防止對 策零件鄰近匯流排配線7配置之狀態之斷面圖。此Ε Μ I 防止對策零件1 3係爲將複合磁鐵層2作爲支撐體，在其 兩面上設有複合磁性體層1。 接著，使用下述之裝置來評估本發明之實施例之Ε Μ I 防止對策零件。 第4圖係爲用於評估本發明之Ε Μ I防止對策零件之試 驗用之裝置之圖。參照第4圖，要被測定之試料係爲將未 -10- 1260198 (p e a k )也明確地顯現。 另外，確認在峰値之一半時之上下兩頻率點間之頻寬之 半値寬係如表2所示那樣逐漸變小。 表2 Η [ 0 e] 半値頻寬 [MHz] 0 115 0 10 0 9 0 0 5 0 0 3 5 0 1000 2 5 0 第7圖係爲示出不使用係爲第4圖之磁場施加用之線圈 之赫姆茲線圈2 8，而改用永久磁鐵3 5並將其配置在試料 上之狀態之圖。亦即，如該圖所示，使用永久磁鐵3 5大 小爲1 c m 3 ( 1 0 _6 m 3)，X，y，及z方向之偏倚磁場強度Η X ，Hy，及 Hz 各爲 3kOe，1.5kOe，1.5kOe(相當於 239，119 ，119kA/m) 〇 第8圖係爲示出使用第4圖之測定用裝置，得出之第7 圖之試料上之電力損失特性之測定結果之圖。於該圖上， 曲線5 1係爲不使用複合磁性體及永久磁鐵兩者而僅有微 細配線（m i c r 〇 s t r i p 1 i n e )之情形時之特性，曲線5 5係爲 不使用永久磁鐵之情形（使用複合磁性體）時之特性，曲線 5 2〜5 4係爲使用複合磁性體和永久磁鐵，永久磁鐵產生 之偏倚磁場之方向係爲X，z，y方向之情形時之特性。相 較於曲線5 5，曲線5 2之Η X係爲1 · 5 k Ο e ( 1 1 9 · 4 k A / m )，曲 1260198 ，進而能降低放射噪音之Ε Μ I防止對策零件及Ε Μ I防止 對策方法。 另外，依本發明，使用之電磁干擾抑制裝置能期具有作 爲電感（L)之功能，因此，藉1個對策能消除不同之多數 噪音，能提供效率極佳之Ε Μ I防止對策零件和Ε Μ I防止 對策方法。 另外，依本發明，具有不必事前即施行防止對策，不必 花時間和使用專業知識來執行防止對策，即便無特定之空 間也能實施防止對策，零件本身也比過濾器等便宜等優點 ，結果能提供有助於電子機器之小型化，便宜化之Ε Μ I 防止對策零件和Ε Μ I防止對策方法。 (產業上利用之可能性） 如上說明，本發明有關之ΕΜΙ防止對策零件及ΕΜΙ防 止對策方法對於抑制電子機器和電氣機器之電磁噪音等之 電磁干擾抑制對策係極爲有用。 5 .圖式簡單說明 第1圖係爲示出將本發明之第1實施例之ΕΜΙ防止對 策零件配置在C P U之匯流排以實施Ε Μ I防止對策之狀態 之斜視圖，係示出部份被切削之Ε Μ I防止對策零件。 第2圖係爲示出將本發明之第2實施例之Ε ΜI防止對 策零件鄰近匯流排配線配置之狀態之斷面圖。 第3圖係爲示出將本發明之第3實施例之Ε ΜI防止對 策零件鄰近匯流排配線配置之狀態之斷面圖。 第4圖係爲示出用於評估本發明之EM I防止對策零件 -15- 1260198 之試驗用裝置和其作用之槪略圖。 第5圖係爲示出偏倚磁場爲零之情形時之試料之反射 (r e f 1 e c t i ο η )傳送特性（S 1 1 )及傳導（t r a n s m i s s i ο η )傳送特性 (S 2 1 )，及係爲對輸入電力之損失比之電力損失特性 (P(loss)/P(in))之圖。 第6圖係爲示出施加不同偏倚磁場時之電力損失特性之 圖。1260198 发明, the description of the invention (the description of the invention should be described: the technical field, prior art, content, embodiment and schematic description of the invention) 1. Field of the Invention The present invention relates to electromagnetic interference (Ε Μ I) prevention For the countermeasures, the method for preventing the data transmission is performed on an information processing device or a device that performs transmission and reception of data between the input and output devices, such as a CPU and a PU as a representative personal computer. The wiring (b U s 1 ine ) is used to prevent electromagnetic interference. 2. Prior Art Generally, if noise is classified according to the propagation path, it can be divided into radiated noise and conducted noise. For the radiation noise system, metal shielding is used to prevent the countermeasures. The conduction noise can be further divided into two types: normal mode noise and common mode noise. For normal noise, countermeasures such as inserting an inductor and a capacitor, and Ε 过滤 I filter on the signal line are used. The common-state noise is radiated toward the air by an interface cable instead of an antenna through a ground system. In recent years, due to the high-speed digitization of signals and high frequency, it is important to prevent common-mode noise. In the past, no countermeasures were taken for common-mode noise. If you need to take countermeasures, insert various filters for noise removal into the wiring. However, when inserting a filter into the wiring (Π n e ), it is necessary to cut off the set signal wiring and vacate the space inserted into the filter to connect, which is extremely cumbersome. In particular, the signal wiring is often a conductor pattern formed on a circuit board. Therefore, it is not easy to connect the conductor pattern once cut off to the 1260198. For this reason, recently, it has been presumed that noise is generated in advance, and the space and wiring required for inserting the filter are reserved and made in advance. However, the bus wiring for transmitting and receiving data on information processing devices and the like is very dense. Therefore, it is extremely difficult to take these countermeasures. In general, it is necessary to have the expertise and experience of noise prevention measures when implementing Ε Μ I to prevent countermeasures. It takes a lot of time to prepare countermeasures. In addition, the price of the filter is high, the space for constructing the filter is limited, the construction of the filter is not easy, and the number of steps required for the overall manufacture of the device is increased, thereby increasing the production cost and the like. In particular, no matter whether noise is generated or not generated, it is necessary to reserve space in advance, and laying wiring in advance can be said to be a very ineffective operation. In recent years, it is extremely difficult to reduce the size and lightness of various types of machines. In order to implement adequate noise prevention measures and to reduce the size of electronic devices, it is extremely difficult to use them. Therefore, an object of the present invention is to provide an EM I prevention countermeasure component and an EM I prevention method, which do not require a device for preventing noise countermeasures in advance, and even if noise is generated after constructing a necessary component and constituting a circuit At the same time, it is still possible to use a dead space to implement adequate countermeasures. 3. In the present invention, the inventors of the present invention have focused on the common mode noise radiated by using an interface cable or the like as an antenna, and the relatively high frequency noise generated by the high frequency of the signal in recent years. By applying a magnetic field to the composite magnetic body for EMI suppression previously proposed, it is possible to improve the efficiency. Μ I Prevent the use of the 1260198 component, and this part is suitable for the method of preventing the ΜI. In other words, according to the present invention, it is possible to provide a component for preventing Ε I, which comprises a composite magnetic layer in which a soft magnetic powder is dispersed in an organic binder layer, and a layer disposed on at least a portion of the composite magnetic layer. The magnet powder is dispersed in a composite magnet layer formed by a binder, and the composite magnet layer applies a bias magnetic field to the composite magnetic layer. Further, according to the present invention, it is possible to provide a method for preventing Ε Μ I, which is characterized in that a composite magnetic layer in which a soft magnetic powder is dispersed in an organic binder layer covers at least a part of a bus bar wiring of an information processing apparatus, and at the same time A bias magnetic field is applied to the composite magnetic layer. 4. Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing a state in which the 防止 I prevention countermeasure component 1 1 of the first embodiment of the present invention is placed on the bus bar wiring 6 of the C P U 5 to prevent the Μ I countermeasure. A part of the cut EM I prevention measure 1 1 is shown. The bus bar wiring 6 is connected to the C P U 5 and an external circuit not shown. The first embodiment is a device for performing electromagnetic interference suppression. Μ I The countermeasure component 1 1 has a sheet-like composite magnetic body 1. The composite magnetic body 1 is formed of an organic binder and a sheet shape made of a metal magnetic powder having an oxidized film on the surface of the organic binder, and has two different magnetic resonances in the bandwidth. The composite magnet layer 2 is provided on one surface of the composite magnetic body 1. This composite magnet layer 2 is obtained by dispersing and solidifying S m C 〇 5 permanent magnet powder in a layer of an organic binder. Further, a bonding layer 3 is provided on the other surface of the composite magnet layer 2 which is not adjacent to the composite magnetic body 1. 1260198 Table 1 Soft magnetic powder Fe-Al-S i alloy Average particle size: 1 〇μ Π1 Aspect ratio: > 590 parts by weight of organic binder polyurethane resin 8 parts by weight 2 parts by weight of isocyanate compound IJ cyclohexane and toluene compound 40 parts by weight ethyl cellosolve 6 5 parts by weight Figure 2 is shown In the second embodiment of the present invention, a cross-sectional view of the state in which the countermeasure component 1 2 is disposed adjacent to the bus bar wiring 7 is provided. In the electromagnetic interference suppression device, the countermeasure component 1 2 is composed of two layers formed of the composite magnetic layer 1 and the composite magnet layer 2 disposed on the composite magnetic layer 1 on the bus bar wiring 7 side. The composite magnetic layer 1 and the composite magnet layer 2 are formed in the same manner as the user of the first embodiment, and the composite magnetic layer 1 is placed on the wiring side. Fig. 3 is a cross-sectional view showing a state in which the control member is placed adjacent to the bus bar wiring 7 in the third embodiment of the present invention. In the meantime, the countermeasure component 1 3 has the composite magnet layer 2 as a support, and the composite magnetic layer 1 is provided on both surfaces thereof. Next, the apparatus for preventing the countermeasures of the embodiment of the present invention was evaluated using the apparatus described below. Fig. 4 is a view showing a device for evaluating the test for preventing 零件 I of the present invention. Referring to Fig. 4, the sample to be measured is also clearly represented by -10- 1260198 (p e a k ). Further, it was confirmed that the half width of the bandwidth between the upper and lower frequency points in one half of the peak is gradually reduced as shown in Table 2. Table 2 Η [ 0 e] Half-turn bandwidth [MHz] 0 115 0 10 0 9 0 0 5 0 0 3 5 0 1000 2 5 0 Figure 7 shows the application of the magnetic field in Figure 4 without using it. A diagram of a state in which the Helmtz coil 2 of the coil is replaced with the permanent magnet 35 and placed on the sample. That is, as shown in the figure, the permanent magnet 35 is 1 cm 3 (1 0 _6 m 3 ), and the bias magnetic field strengths X, Hy, and Hz in the X, y, and z directions are 3 kOe, 1.5. kOe, 1.5kOe (corresponding to 239, 119, 119 kA/m) 〇 Fig. 8 is a graph showing the measurement results of the power loss characteristics on the sample of the seventh drawing obtained by using the measuring apparatus of Fig. 4 . In the figure, the curve 51 is a characteristic in the case where the composite magnetic body and the permanent magnet are not used and only the micro wiring (micr 〇strip 1 ine) is used, and the curve 55 is a case where the permanent magnet is not used ( When the composite magnetic material is used, the curves 5 2 to 5 4 are characteristics in which the composite magnetic body and the permanent magnet are used, and the direction of the bias magnetic field generated by the permanent magnet is in the X, z, y direction. Compared with the curve 5 5, the Η X of the curve 5 2 is 1 · 5 k Ο e (1 1 9 · 4 k A / m ), and the curve 1260198, which can reduce the radiation noise Ε I prevent the countermeasure parts and defects Μ I Prevent countermeasures. Further, according to the present invention, the electromagnetic interference suppressing device used can have the function as the inductance (L), and therefore, it is possible to eliminate a large amount of noise by one countermeasure, and it is possible to provide an excellent efficiency. Μ I Prevent countermeasures. Further, according to the present invention, it is possible to carry out prevention measures without having to take the time and use professional knowledge to perform countermeasures, and it is possible to carry out prevention measures even if there is no specific space, and the parts themselves are cheaper than filters, and the like. Provided to help reduce the size and cost of electronic equipment Ε I Prevent countermeasures and Ε Μ I Prevent countermeasures. (Effects of Industrial Applicability) As described above, the method for preventing the countermeasures and the method for preventing the tampering of the present invention are extremely useful for suppressing electromagnetic interference suppression measures such as electromagnetic noise of electronic equipment and electric equipment. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state in which a countermeasure component of a first embodiment of the present invention is placed in a busbar of a CPU to perform a countermeasure against Ε I. After being cut Ε I Prevent countermeasure parts. Fig. 2 is a cross-sectional view showing a state in which the control unit is placed adjacent to the bus bar wiring in the second embodiment of the present invention. Fig. 3 is a cross-sectional view showing a state in which the 零件I of the third embodiment of the present invention is prevented from being disposed adjacent to the bus bar wiring. Fig. 4 is a schematic view showing a test apparatus for evaluating the EM I countermeasure component -15-1260198 of the present invention and its action. Fig. 5 is a diagram showing the reflection (ref 1 ecti ο η ) transmission characteristic (S 1 1 ) and the conduction (transmissi ο η ) transmission characteristic (S 2 1 ) of the sample when the bias magnetic field is zero, and A graph of the power loss characteristic (P(loss)/P(in)) of the input power loss ratio. Fig. 6 is a graph showing the power loss characteristics when different bias magnetic fields are applied.
第7圖係爲示出在試料上配置永久磁鐵，以取代第4圖 之磁場施加用之赫姆茲（H e 1 m h ο 11 z )線圈之狀態。 第8圖係爲示出第7圖之試料上之電力損失特性之測定 結果之圖。 第9圖及第1 0圖係爲分別示出各種之偏倚磁場上之試料 之實數部導磁係數μ’，虛數部導磁係數μ”之頻率特性之圖。 第1 1圖係爲分別示出無磁場時相同試料之相對實數部 導磁係數μ ’，相對虛數部導磁係數μ ”之頻率特性之圖。Fig. 7 is a view showing a state in which a permanent magnet is placed on a sample in place of the Hemz (H e 1 m h ο 11 z ) coil for magnetic field application in Fig. 4. Fig. 8 is a view showing the measurement results of the power loss characteristics on the sample of Fig. 7. Fig. 9 and Fig. 1 are diagrams showing the frequency characteristics of the real part magnetic permeability coefficient μ' and the imaginary part magnetic permeability coefficient μ" of the sample on various bias magnetic fields, respectively. A graph showing the frequency characteristics of the relative real part magnetic permeability μ ' of the same sample in the absence of a magnetic field and the relative imaginary part magnetic permeability μ "".
第1 2圖係爲示出將本發明之第4實施例之Ε Μ I防止對策 零件配置於C P U之匯流排配線以實施Ε Μ I防止對策之狀態 之斜視圖，係示出部份被切削之Ε Μ I防止對策零件。 主要部分之代表符號說明 1 複合磁性體 2 複合磁鐡層 3 黏結層 5 中央處理單元 6 匯流排配線 -1 6- 1260198 2 0 EMI防 止零件 2 1 微細配 線 2 2，2 3 引線 2 4 微分析 器 2 8 H e 1 m h ο 11 z 線 3 1 輸入 3 2 輸出FIG. 1 is a perspective view showing a state in which the countermeasure component of the fourth embodiment of the present invention is placed on the busbar wiring of the CPU to perform the countermeasure against the Μ I, and the partial portion is cut. Ε Μ I Prevent countermeasure parts. Representative symbols for the main part 1 Composite magnetic body 2 Composite magnetic layer 3 Bonding layer 5 Central processing unit 6 Busbar wiring-1 6- 1260198 2 0 EMI prevention parts 2 1 Fine wiring 2 2, 2 3 Lead 2 4 Micro analysis 2 8 H e 1 mh ο 11 z line 3 1 input 3 2 output
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