KR101832570B1 - Coil Electronic Component - Google Patents

Coil Electronic Component Download PDF

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Publication number
KR101832570B1
KR101832570B1 KR1020150183204A KR20150183204A KR101832570B1 KR 101832570 B1 KR101832570 B1 KR 101832570B1 KR 1020150183204 A KR1020150183204 A KR 1020150183204A KR 20150183204 A KR20150183204 A KR 20150183204A KR 101832570 B1 KR101832570 B1 KR 101832570B1
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KR
South Korea
Prior art keywords
base region
region
marking
white pigment
tio
Prior art date
Application number
KR1020150183204A
Other languages
Korean (ko)
Other versions
KR20170074105A (en
Inventor
임정환
신성식
Original Assignee
삼성전기주식회사
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Application filed by 삼성전기주식회사 filed Critical 삼성전기주식회사
Priority to KR1020150183204A priority Critical patent/KR101832570B1/en
Priority to JP2016082200A priority patent/JP2017118089A/en
Publication of KR20170074105A publication Critical patent/KR20170074105A/en
Application granted granted Critical
Publication of KR101832570B1 publication Critical patent/KR101832570B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F17/0013—Printed inductances with stacked layers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
    • C09C1/0084—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound containing titanium dioxide
    • C09C1/0087—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound containing titanium dioxide only containing titanium dioxide and silica or silicate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Composite Materials (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

A coil electronic component according to an embodiment of the present invention includes a body including a coil pattern and a display portion formed on a surface of the body and having a base region and a marking region formed by a white pigment on a part of the base region As a result, it is possible to realize an excellent discriminating power in indicating the direction of the parts.

Description

Coil Electronic Component [0002]

The present invention relates to a coil electronic component.

An inductor is one of the components forming an electronic circuit together with a resistor and a condenser. The inductor is formed by winding or printing a coil on a ferrite core and forming electrodes at both ends. And is used as a component for forming an LC resonant circuit. The inductors can be classified into various types such as a laminated type, a wound type, and a thin type according to the shape of a coil.

In the case of the inductor, it is necessary to distinguish between the upper and lower parts because the capacitance value varies according to the direction of the inner coil. For this purpose, a process for marking the display part on the surface of the part is required. In recent years, the size of the parts tends to become smaller in the trend of miniaturization and multifunctionality of electronic products, and such a marking area also becomes smaller. When the marking area is reduced, it is difficult to identify the display part, which causes problems such as a decrease in the part yield and an increase in the processing time.

Thus, in the art, attempts have been made to improve the discrimination of the markings marked on the surface of the inductor, which is more necessary when the size of the parts is small. In this connection, the present invention intends to provide a coiled electronic part having a display part with excellent discrimination as one object.

According to one aspect of the present invention, there is provided a method of manufacturing a coiled electronic component, the method including the steps of: forming a body including a coil pattern on a surface of the body; And a display portion having a marking region formed by a white pigment on a part of the base region.

In this case, the marking region may be formed to fill the groove formed on the upper surface of the base region.

In addition, the white pigment may be typically TiO 2 , and the marking region may be formed by a paste printed on the substrate region.

In addition, since white pigment particles exist in a dense form, excellent discrimination power can be realized, so that the TiO 2 powder contained in the paste may have a BET of 5.0 m 2 / g or more. Further, the TiO 2 powder included in the paste may contain about 20-22%.

By using the coil electronic component proposed in the embodiment of the present invention, the discrimination power of the display portion marked on the surface can be remarkably improved, leading to an improvement in the process efficiency with respect to the coil electronic component.

1 and 2 schematically show a coil electronic component according to an embodiment of the present invention, which are respectively a perspective view and an exploded perspective view.
3 is a cross-sectional view showing the configuration of a display portion which can be employed in the embodiment of Fig.
Fig. 4 illustrates various forms of marking areas that can be employed in the embodiment of Fig.
Fig. 5 schematically shows the behavior of light incident on the marked region when the white pigment is not densely formed and when the white pigment is densely formed.
Fig. 6 schematically shows the sintering behavior of white pigment powder having different particle sizes.

Hereinafter, embodiments of the present invention will be described with reference to specific embodiments and the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided for a more complete description of the present invention to the ordinary artisan. Accordingly, the shapes and sizes of the elements in the drawings may be exaggerated for clarity of description, and the elements denoted by the same reference numerals in the drawings are the same elements.

It is to be understood that, although the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Will be described using the symbols. Further, throughout the specification, when an element is referred to as "including" an element, it means that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

1 and 2 schematically show a coil electronic component according to an embodiment of the present invention, which are respectively a perspective view and an exploded perspective view. 3 is a cross-sectional view showing a configuration of a display portion which can be employed in the embodiment of Fig. Figure 4 also shows various forms of marking areas that may be employed in the embodiment of Figure 1.

Although the multilayer inductor is described as an example of the coiled electronic component 100 in this embodiment, the display portion 102 corresponding to the unique structure in this embodiment is applicable to other types of inductors, It will be possible.

1 and 2 together, the coiled electronic component 100 includes a body 101 including a plurality of sheets 103 on which a coil pattern 104 is formed, and a display portion 102 formed on the surface of the body 101 102). In this case, although not shown, external electrodes may be provided on the outside of the body 101, which are electrically connected to the coil pattern 104. In this embodiment, the bodies other than the body and the display unit 102, Cities and descriptions are omitted.

The boundaries between the sheets 103 adjacent to each other by the sintering process can be integrated into the body 101 to such an extent that it is difficult to confirm without using a scanning electron microscope (SEM) It is not necessary to form them only in this integrated form. The shape and dimensions of the body 101 are not limited to those shown in the present embodiment, and the thickness of the sheet 103 can be arbitrarily changed in accordance with the capacity design of the coil electronic component 100. [

The plurality of sheets 103 may include a magnetic material, and examples thereof include Al 2 O 3 -based dielectrics, Mn-Zn ferrites, Ni-Zn ferrites, Ni-Zn-Cu ferrites, Mn- Ba-based ferrite, and Li-based ferrite. In addition, the plurality of sheets 103 may include a metal magnetic powder. In this case, the metal magnetic powder powders that can be contained in the sheet 103 include iron (Fe), silicon (Si), boron (B), chromium (Cr), aluminum (Al), copper (Cu), niobium Nickel (Ni), and the like. An example of such a material is an Fe-Si-B-Cr amorphous metal. Further, an oxide film is formed on the surface of the metal magnetic powder, and the insulating property of the metal magnetic powder can be ensured.

The coil pattern 104 is formed in the form of a conductor pattern on a plurality of sheets 103 and is formed using a method such as printing a conductive paste containing a conductive metal on the sheet 103 . 2, the coil pattern 104 may be electrically connected to those formed in other layers to form a coil structure, and a conductive pattern (not shown) for electrical connection between such layers, Vias may be provided. On the other hand, the conductive metal forming the coil pattern 104 is not particularly limited as long as it is a metal having excellent electrical conductivity. For example, silver (Ag), palladium (Pd), aluminum (Al), nickel (Ni) Ti, gold (Au), copper (Cu), platinum (Pt), or the like.

In the case of the present embodiment, the display portion 102 is formed on the upper surface of the body 101, on the basis of FIGS. 1 and 2, to identify the mounting direction of the component 100. The display portion 102 includes a base region B and a marking region M where the marking region M is formed by a white pigment on a part of the base region B.

The base region B is made of a darker material than the marking region M and can be black as shown in FIG. In this case, white and black are complementary color contrast, which can provide excellent discrimination power. The base region B may include the same magnetic material as the sheet 103 included in the body 101, and a black pigment may be added thereto. In this case, the base region B may be laminated together with the plurality of sheets 103 to form an integral structure with the body 101. [

As described above, the marking portion M is formed by a white pigment, and TiO 2 can be used as an example of such a white pigment. 3, the marking region M may be formed so as to fill the groove formed on the upper surface of the base region B, and further, the upper surface of the marking region M and the upper surface of the base region B May be formed as a co-plane.

As an example of the method of obtaining the shape shown in FIG. 3, a white pigment may be paste printed on the base region B, but pressure may be applied to the base region B in this process. In this case, the paste for printing the white pigment may include TiO 2 powder and glass, wherein the glass is added for the purpose of connecting TiO 2 powder during the sintering process because TiO 2 has a relatively high sintering temperature . The white pigment remaining after sintering in the paste for forming the marking area M needs to be left in a sufficient amount in order to secure discrimination power. In this case, a white pigment type marking area M having excellent discoloring power could be obtained when about 20 to 22% of the TiO 2 powder was contained in the paste component and about 150% of the glass was added to the TiO 2 powder.

It is possible to expect an improvement in efficiency in the process of mounting the coiled electronic component 100 by employing the marking region M of high cyanity so as to have a good discriminating power on the dark background region B as in this embodiment. The excellent cyan performance and discerning power can be exerted especially when the size of the coil electronic component 100 is small. Here, the case where the coil electronic component 100 has a small size is a case of 0603 size, that is, , And the length (L) and width (W) of the body are smaller than 6 mm and 3 mm, respectively. However, since the size criterion may be relative, the display unit 102 proposed in the present embodiment should not necessarily be applied to the 0603 size element.

4, the shape of the display portion 102, that is, the background region B and the marking region M are variously modified according to the size, shape, identification method, etc. of the electronic component . In addition, although not shown in FIG. 4, other shapes may be used as needed.

This high cyan marking area M can be realized by forming a dense intergranular connection structure after sintering using a white pigment powder having a relatively small particle size. This will be described with reference to FIGS. 5 and 6. FIG. Fig. 5 schematically shows the behavior of light incident on the marked region when the white pigment is not densely formed and when the white pigment is densely formed. As shown in FIG. 5, when the white pigment particles are not arranged densely (on the left side), the amount of light scattered or absorbed increases, so that the discrimination power of the marked region is remarkably lowered. In contrast, when the white pigment is densely formed, most of the light is reflected, and thus the cyanation can be greatly improved.

In this connection, Fig. 6 schematically shows the sintering behavior of the white pigment powder having different particle sizes. 6, when the particle size is relatively large (upper part in FIG. 6), the size of the pores formed between the particles is large even after the sintering, so that it is difficult to obtain a dense particle connection structure. In contrast, when the size of the particles is relatively small (lower part of FIG. 6), fine pores remain after the sintering, which is a level that does not significantly affect the discrimination power.

The inventors of the present invention have experimented in terms of the specific surface area (BET) of the white pigment, that is, the TiO 2 powder, which is capable of sufficiently securing white coloration based on the above idea. When the BET of the TiO 2 powder is 5.0 m 2 / g, it was confirmed that a dense particle connection structure without deterioration of discrimination power could be obtained.

As described above, in the case of the coil electronic component proposed in one embodiment of the present invention, since the connectivity of the color pigment particles is realized in a remarkably dense state, it is possible to provide a display portion having excellent discrimination power, The associated process efficiency can be greatly improved.

The present invention is not limited to the above-described embodiments and the accompanying drawings, but is intended to be limited only by the appended claims. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

100: coil electronic parts
101: Body
102:
103: Sheet
104: Coil pattern
B:
M: Marking area

Claims (14)

A body including a coil pattern; And
And a display portion formed on a surface of the body, the display portion having a base region and a marking region formed by a white pigment on a part of the base region,
Wherein the marking region is formed on an upper surface of the base region so as to fill a hole formed in a range not penetrating the base region,
Wherein the base region comprises a magnetic material and a black pigment.
delete The method according to claim 1,
Wherein the upper surface of the marking region and the upper surface of the base region form a coplanar surface.
delete delete The method according to claim 1,
Wherein the white pigment is TiO 2 .
The method according to claim 1,
Wherein the marking region is formed by a paste printed on the base region.
8. The method of claim 7,
Wherein the paste includes TiO 2 powder and glass.
9. The method of claim 8,
Wherein the TiO 2 powder has a BET of 5.0 m 2 / g or more.
9. The method of claim 8,
Wherein the TiO 2 powder is included in the paste in an amount of 20-22%.
The method according to claim 1,
Wherein the body has a length and a width smaller than 6 mm and 3 mm, respectively.
The method according to claim 1,
Wherein the plurality of coil patterns are stacked to form a laminated structure.
delete The method according to claim 1,
Wherein the body comprises a magnetic material contained in the base region.
KR1020150183204A 2015-12-21 2015-12-21 Coil Electronic Component KR101832570B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150183204A KR101832570B1 (en) 2015-12-21 2015-12-21 Coil Electronic Component
JP2016082200A JP2017118089A (en) 2015-12-21 2016-04-15 Coil electronic component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150183204A KR101832570B1 (en) 2015-12-21 2015-12-21 Coil Electronic Component

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KR20170074105A KR20170074105A (en) 2017-06-29
KR101832570B1 true KR101832570B1 (en) 2018-02-26

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102671967B1 (en) 2019-03-05 2024-06-05 삼성전기주식회사 Coil component
JP7131485B2 (en) 2019-06-03 2022-09-06 株式会社村田製作所 inductor components
WO2023286655A1 (en) * 2021-07-12 2023-01-19 株式会社村田製作所 Ceramic component

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007242806A (en) * 2006-03-07 2007-09-20 Mitsubishi Materials Corp Stacked electronic component and manufacturing method therefor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839028U (en) * 1981-09-09 1983-03-14 松下電器産業株式会社 Square chip-shaped electronic components
JPS6443577A (en) * 1987-08-12 1989-02-15 Dainichiseika Color Chem Metallic paint composition
KR100281191B1 (en) * 1998-12-17 2001-04-02 김춘호 Stacked Chip Inductors
JP3888446B2 (en) * 2002-03-25 2007-03-07 株式会社村田製作所 Ceramic electronic component and method for manufacturing ceramic electronic component
JP2004128004A (en) * 2002-09-30 2004-04-22 Toko Inc Laminated inductor
JP2005045103A (en) * 2003-07-24 2005-02-17 Tdk Corp Chip inductor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007242806A (en) * 2006-03-07 2007-09-20 Mitsubishi Materials Corp Stacked electronic component and manufacturing method therefor

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JP2017118089A (en) 2017-06-29

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