JP2017139368A - Coil component - Google Patents
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- JP2017139368A JP2017139368A JP2016019864A JP2016019864A JP2017139368A JP 2017139368 A JP2017139368 A JP 2017139368A JP 2016019864 A JP2016019864 A JP 2016019864A JP 2016019864 A JP2016019864 A JP 2016019864A JP 2017139368 A JP2017139368 A JP 2017139368A
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Abstract
Description
本発明は、デジタル機器やＡＶ機器、情報通信端末等の各種電子機器に使用されるコモンモードノイズフィルタなどのコイル部品に関するものである。 The present invention relates to a coil component such as a common mode noise filter used in various electronic devices such as digital devices, AV devices, and information communication terminals.
従来のこの種のコイル部品は、図６に示すように、絶縁層１に設けられたコイル導体２を有し、このコイル導体２は、コイル導体２を形成する導体パターン間の間隔が等しい渦巻状に形成されていた。 As shown in FIG. 6, the conventional coil component of this type has a coil conductor 2 provided on the insulating layer 1, and the coil conductor 2 is a spiral having equal intervals between conductor patterns forming the coil conductor 2. It was formed in a shape.
なお、この出願の発明に関連する先行技術文献としては、例えば、特許文献１が知られている。 As a prior art document related to the invention of this application, for example, Patent Document 1 is known.
上記した従来のコイル部品においては、直流抵抗値を低減させるために導体パターンの厚みを厚くする場合、焼成時に応力によって、隣り合う導体パターン間でショートする可能性があるという課題を有していた。 In the conventional coil component described above, when the thickness of the conductor pattern is increased in order to reduce the DC resistance value, there is a problem that there is a possibility of short-circuiting between adjacent conductor patterns due to stress during firing. .
特に、最外周の導体パターンの外側、最内周の導体パターンの内側には、他の導体パターンが存在しないため、最外周、最内周の導体パターンは応力を受け易く、ショートが発生する可能性が高まる。 In particular, there is no other conductor pattern outside the outermost conductor pattern and inside the innermost conductor pattern, so the outermost and innermost conductor patterns are susceptible to stress and can cause a short circuit. Increases nature.
本発明は上記従来の課題を解決するもので、導体パターンの厚みが厚くなっても、ショートが発生する可能性を低減できるコイル部品を提供することを目的とするものである。 The present invention solves the above-described conventional problems, and an object of the present invention is to provide a coil component that can reduce the possibility of occurrence of a short circuit even when the thickness of a conductor pattern is increased.
上記目的を解決するために本発明は、絶縁層と、前記絶縁層に積層され、渦巻状に形成された導体パターンからなるコイル導体とを備え、前記導体パターンの最内周および最外周における隣り合う前記導体パターン同士の間隔を、前記導体パターンの他の部分における前記導体パターン同士の間隔よりも広くした。 In order to solve the above-described object, the present invention includes an insulating layer and a coil conductor formed of a conductive pattern laminated on the insulating layer and formed in a spiral shape, and adjacent to the innermost circumference and the outermost circumference of the conductor pattern. The interval between the matching conductor patterns was made wider than the interval between the conductor patterns in other portions of the conductor pattern.
本発明のコイル部品は、導体パターンの最内周および最外周における導体パターン同士の間隔を広くしているため、導体パターンの厚みが厚くなっても、ショートが発生する可能性を低減できるという効果を奏するものである。 In the coil component of the present invention, the distance between the conductor patterns on the innermost periphery and the outermost periphery of the conductor pattern is widened, so that the possibility of occurrence of a short circuit can be reduced even if the thickness of the conductor pattern is increased. It plays.
図１は本発明に係るコイル部品の一実施の形態としてのコモンモードノイズフィルタを示す断面図、図２は同コモンモードノイズフィルタの斜視図、図３は同コモンモードノイズフィルタの主要部の上面図である。 1 is a cross-sectional view showing a common mode noise filter as an embodiment of a coil component according to the present invention, FIG. 2 is a perspective view of the common mode noise filter, and FIG. 3 is an upper surface of a main part of the common mode noise filter. FIG.
本発明の一実施の形態におけるコイル部品は、図１に示すように、第１の非磁性体部１１と、第１の非磁性体部１１を挟み込む第１の磁性体部１２、第２の磁性体部１３と、第１の非磁性体部１１内に埋設されＡｇで構成された第１のコイル１４、第２のコイル１５と、第１の磁性体部１２、第２の磁性体部１３を挟み込んでコモンモードノイズフィルタの最も外側に位置する第２の非磁性体部１６とを備えている。 As shown in FIG. 1, the coil component according to the embodiment of the present invention includes a first nonmagnetic body portion 11, a first magnetic body portion 12 that sandwiches the first nonmagnetic body portion 11, and a second Magnetic body part 13, first coil 14 and second coil 15 embedded in first nonmagnetic body part 11 and made of Ag, first magnetic body part 12, second magnetic body part 13 and a second non-magnetic member 16 positioned on the outermost side of the common mode noise filter.
上記構成において、前記第１の非磁性体部１１は、複数の絶縁層１１ａを積層することによって形成され、また、この第１の非磁性体部１１は、ガラスとＳｉＯ2で構成されたフィラーとを含有している。 In the above configuration, the first nonmagnetic body portion 11 is formed by laminating a plurality of insulating layers 11a, and the first nonmagnetic body portion 11 is a filler composed of glass and SiO 2. Containing.
また、前記第１の磁性体部１２は、第１の非磁性体部１１の下面に積層され、シート状に構成されたＮｉ−Ｃｕ−Ｚｎフェライト等の磁性材料からなる複数の磁性体層で構成されている。 The first magnetic body portion 12 is a plurality of magnetic layers made of a magnetic material such as Ni—Cu—Zn ferrite, which is laminated on the lower surface of the first nonmagnetic body portion 11 and configured in a sheet shape. It is configured.
そして、前記第２の磁性体部１３は、第１の非磁性体部１１の上面に積層され、すなわち、第１の非磁性体部１１を第１、第２の磁性体部１２、１３で挟み込んだ構成とし、そして、第２の磁性体部１３も、シート状に構成されたＮｉ−Ｃｕ−Ｚｎフェライト等の磁性材料からなる複数の磁性体層で構成されている。 The second magnetic body portion 13 is laminated on the upper surface of the first nonmagnetic body portion 11, that is, the first nonmagnetic body portion 11 is replaced by the first and second magnetic body portions 12 and 13. The second magnetic body portion 13 is also composed of a plurality of magnetic layers made of a magnetic material such as Ni—Cu—Zn ferrite formed in a sheet shape.
さらに、前記第１のコイル１４、第２のコイル１５は、第１の非磁性体部１１内に埋設され、それぞれ渦巻状の第１、第２のコイル導体１４ａ、１５ａで形成されている。また、第１、第２のコイル導体１４ａ、１５ａは、それぞれ絶縁層１１ａにＡｇを渦巻状にめっきまたは印刷することにより形成されている。そして、第１のコイル１４と第２のコイル１５が磁気結合するようになっている。 Further, the first coil 14 and the second coil 15 are embedded in the first non-magnetic body portion 11 and are formed of spiral first and second coil conductors 14a and 15a, respectively. The first and second coil conductors 14a and 15a are each formed by plating or printing Ag in a spiral shape on the insulating layer 11a. The first coil 14 and the second coil 15 are magnetically coupled.
そしてまた、前記第２の非磁性体部１６は、第１の磁性体部１２の下面、および第２の磁性体部１３の上面に積層されている、すなわち、第１の磁性体部１２、第２の磁性体部１３を挟み込んでコモンモードノイズフィルタの最も外側に位置する。なお、第２の非磁性体部１６は、第１の磁性体部１２の下面、または第２の磁性体部１３の上面のうち一方のみに設けるようにしてもよい。また、この第２の非磁性体部１６は、複数の非磁性体層を積層することによって形成され、ガラスとＳｉＯ2で構成されたフィラーとを含有している。 Further, the second non-magnetic body portion 16 is laminated on the lower surface of the first magnetic body portion 12 and the upper surface of the second magnetic body portion 13, that is, the first magnetic body portion 12, It is located on the outermost side of the common mode noise filter with the second magnetic body portion 13 interposed therebetween. The second non-magnetic member 16 may be provided only on one of the lower surface of the first magnetic member 12 or the upper surface of the second magnetic member 13. The second nonmagnetic part 16 is formed by laminating a plurality of nonmagnetic layers, and contains glass and a filler composed of SiO 2 .
そして、上記した構成により、図２に示すような積層体１７が形成される。また、この積層体１７の両端面には、４つの外部電極１８が設けられ、そしてこの外部電極１８はそれぞれ第１のコイル１４、第２のコイル１５の各両端部と接続されている。さらに、外部電極１８は、積層体１７の端面に樹脂と銀からなるペーストを印刷することにより形成され、またこれらの表面にめっきによってニッケルめっき層を形成するとともに、このニッケルめっき層の表面にめっきによってすずやはんだ等の低融点金属めっき層を形成する。 And the laminated body 17 as shown in FIG. 2 is formed by the above-mentioned structure. Further, four external electrodes 18 are provided on both end surfaces of the laminate 17, and the external electrodes 18 are connected to both end portions of the first coil 14 and the second coil 15, respectively. Further, the external electrode 18 is formed by printing a paste made of resin and silver on the end face of the laminate 17, and a nickel plating layer is formed on these surfaces by plating, and the surface of the nickel plating layer is plated. To form a low melting point metal plating layer of tin or solder.
また、第１、第２のコイル導体１４ａ、１５ａは、図３に示すように、絶縁層１１ａ上に渦巻状に形成された導体パターンで構成されている。なお、図３〜図５は、説明を簡単にするために、絶縁層１１ａおよび第１のコイル導体１４ａの導体パターンのみの上面図を示す。 Moreover, the 1st, 2nd coil conductors 14a and 15a are comprised by the conductor pattern formed in the spiral shape on the insulating layer 11a, as shown in FIG. 3 to 5 show top views of only the conductor pattern of the insulating layer 11a and the first coil conductor 14a for the sake of simplicity.
この導体パターンの最内周および最外周における導体パターン同士の間隔ｗ１は、導体パターンの他の部分における導体パターン同士の間隔ｗ２よりも広くなっている。また、導体パターンは、直線部１９ａとＲ部１９ｂとで構成されている。 An interval w1 between the conductor patterns on the innermost periphery and the outermost periphery of the conductor pattern is wider than an interval w2 between the conductor patterns in other portions of the conductor pattern. Moreover, the conductor pattern is comprised by the linear part 19a and the R part 19b.
ここで、最内周の導体パターン同士の間隔ｗ１は、最も内側に存在する導体パターンと、それと隣り合う導体パターンとの距離を示し、最外周の導体パターン同士の間隔ｗ１は、最も外側に存在する導体パターンと、それと隣り合う導体パターンとの距離を示す。 Here, the interval w1 between the innermost conductor patterns indicates the distance between the innermost conductor pattern and the adjacent conductor pattern, and the interval w1 between the outermost conductor patterns exists at the outermost side. The distance between the conductor pattern to be performed and the conductor pattern adjacent thereto is shown.
さらに、ここで言う最内周の導体パターンは、第１、第２のコイル導体１４ａ、１５ａ同士をそれぞれ接続する場合のビア電極１４ｃ、１５ｃ近傍を除き、そして、最外周の導体パターンは、外部電極１８と第１、第２のコイル導体１４ａ、１５ａをそれぞれ接続する引出用電極１４ｄ、１５ｄ近傍を除く。 Further, the innermost conductor pattern referred to here excludes the vicinity of the via electrodes 14c and 15c when the first and second coil conductors 14a and 15a are connected to each other. Excludes the vicinity of the lead electrodes 14d and 15d that connect the electrode 18 and the first and second coil conductors 14a and 15a, respectively.
上記したように本発明の一実施の形態におけるコイル部品においては、導体パターンの最内周および最外周における導体パターン同士の間隔を広くしているため、導体パターンの厚みが厚くなっても、ショートが発生する可能性を低減できるという効果が得られるものである。 As described above, in the coil component according to the embodiment of the present invention, the distance between the conductor patterns on the innermost periphery and the outermost periphery of the conductor pattern is widened. The effect that it is possible to reduce the possibility of occurrence of is obtained.
すなわち、焼成時の応力を最も多く受け、その結果、ショートが発生する可能性が高い最外周、最内周における導体パターンについて、その導体パターン間隔を広くすることによって、ショートが発生する可能性を低減できる。また、最外周、最内周のうちいずれか一方でも導体パターン間隔を広くすれば、上記の効果は得られる。 In other words, the conductor pattern on the outermost and innermost circumferences, which receives the most stress during firing and, as a result, is likely to cause a short circuit, has the potential to cause a short circuit by widening the conductor pattern interval. Can be reduced. In addition, the above-described effect can be obtained by increasing the conductor pattern interval on either the outermost circumference or the innermost circumference.
なお、最内周および最外周における導体パターン同士の間隔ｗ１は、他の部分における導体パターン同士の間隔ｗ２の１．２倍〜２．０倍とするのが好ましい。 In addition, it is preferable that the space | interval w1 of the conductor patterns in innermost periphery and outermost periphery shall be 1.2 times-2.0 times the space | interval w2 of the conductor patterns in another part.
さらに、図４に示すように、導体パターンは、最も応力を受け易いＲ部１９ｂにおける導体パターン同士の間隔ｗ３を、直線部１９ａにおける導体パターン同士の間隔ｗ４よりも広くしてもよい。 Furthermore, as shown in FIG. 4, in the conductor pattern, the interval w3 between the conductor patterns in the R portion 19b that is most susceptible to stress may be wider than the interval w4 between the conductor patterns in the straight portion 19a.
図３、図４においては、第１、第２のコイル導体１４ａ、１５ａの導体パターンの線幅は、どの部分でも略同一である。 3 and 4, the line widths of the conductor patterns of the first and second coil conductors 14a and 15a are substantially the same in any part.
そして、上記の第１、第２のコイル導体１４ａ、１５ａをめっきまたは印刷で形成するとき、レジストを使用するが、最内周および最外周においてはレジスト端部がダレて線幅が大きくなる可能性があるため、線幅が所定の幅になるように、あらかじめ最内周、最外周での線幅が細くなるようにこの部分のレジスト幅を大きくしてもよい。 When the first and second coil conductors 14a and 15a are formed by plating or printing, a resist is used. However, the resist end may sag at the innermost periphery and the outermost periphery to increase the line width. For this reason, the resist width of this portion may be increased in advance so that the line width at the innermost periphery and the outermost periphery becomes narrow so that the line width becomes a predetermined width.
また、図５に示すように、最外周、最内周の導体パターンの線幅を、他の部分の導体パターンの線幅より細くしても、同様に、ショートが発生する可能性を低減できる。最外周、最内周の導体パターンが受ける応力を低減できるためである。 Further, as shown in FIG. 5, even if the line widths of the outermost and innermost conductor patterns are narrower than the line widths of the conductor patterns in other portions, the possibility of occurrence of a short circuit can be reduced. . It is because the stress which the conductor pattern of the outermost periphery and innermost periphery receives can be reduced.
なお、上記の一実施の形態では、同一絶縁層１１ａにコイル導体１４、１５を１つだけ有するコモンモードノイズフィルタについて説明したが、本発明は、同一絶縁層１１ａに複数のコイル導体１４、１５が並設されているアレイタイプのコモンモードノイズフィルタにも適用可能である。さらに、本発明は、そのようなコモンモードノイズフィルタ以外のコイル部品、例えば同一絶縁層１１ａに２本の導体パターンを螺旋状に配置して１つのスパイラル部を形成してなるコイル部品等にも適用可能である。 In the above-described embodiment, the common mode noise filter having only one coil conductor 14 and 15 in the same insulating layer 11a has been described. However, the present invention provides a plurality of coil conductors 14 and 15 in the same insulating layer 11a. It is also applicable to an array type common mode noise filter in which are arranged in parallel. Furthermore, the present invention also applies to coil components other than such a common mode noise filter, such as a coil component in which two conductor patterns are spirally arranged on the same insulating layer 11a to form one spiral portion. Applicable.
本発明に係るコイル部品は、導体パターンの厚みが厚く、導体パターンのピッチが狭くなっても、ショートが発生する可能性を低減できるという効果を有するものであり、特にデジタル機器やＡＶ機器、情報通信端末等に使用される小形で薄型のコモンモードノイズフィルタ等のコイル部品において有用となるものである。 The coil component according to the present invention has an effect that the possibility of occurrence of a short circuit can be reduced even when the conductor pattern is thick and the conductor pattern pitch is narrowed. This is useful for small and thin coil components such as common mode noise filters used in communication terminals and the like.
１１ａ 絶縁層
１４ａ、１５ａ 第１、第２のコイル導体
11a Insulating layer 14a, 15a First and second coil conductors
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| Application Number | Priority Date | Filing Date | Title |
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| JP2016019864A JP2017139368A (en) | 2016-02-04 | 2016-02-04 | Coil component |
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| JP2016019864A JP2017139368A (en) | 2016-02-04 | 2016-02-04 | Coil component |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001085230A (en) * | 1999-09-14 | 2001-03-30 | Murata Mfg Co Ltd | Inductor |
| JP2007128928A (en) * | 2005-10-31 | 2007-05-24 | Tdk Corp | Coil element |
| JP2010153416A (en) * | 2008-12-24 | 2010-07-08 | Yazaki Corp | Spiral inductor |
| JP2013048243A (en) * | 2011-08-29 | 2013-03-07 | Samsung Electro-Mechanics Co Ltd | Conductor pattern and electronic component including the same |
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2016
- 2016-02-04 JP JP2016019864A patent/JP2017139368A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001085230A (en) * | 1999-09-14 | 2001-03-30 | Murata Mfg Co Ltd | Inductor |
| JP2007128928A (en) * | 2005-10-31 | 2007-05-24 | Tdk Corp | Coil element |
| JP2010153416A (en) * | 2008-12-24 | 2010-07-08 | Yazaki Corp | Spiral inductor |
| JP2013048243A (en) * | 2011-08-29 | 2013-03-07 | Samsung Electro-Mechanics Co Ltd | Conductor pattern and electronic component including the same |
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