KR-20260063087-A - COIL ELECTRONIC COMPONENT

Abstract

A coil electronic component according to one embodiment comprises a support member, a coil disposed on the support member, and a body containing a magnetic material that surrounds the support member and the coil, wherein the coil comprises an inner coil and an outer coil disposed in order of proximity to the support member, and the outer coil is connected to the inner coil, and the ratio of the cross-sectional area of each turn of the inner coil to the cross-sectional area of each turn of the outer coil may be 1100/1150 or greater and 1200/1150 or less.

Inventors

• 이한
• 김범석

Assignees

• 삼성전기주식회사

Dates

Publication Date

20260507

Application Date

20241030

Claims (9)

1. Support member, A coil disposed on the above-mentioned support member, and A body comprising a magnetic material surrounding the above-mentioned support member and the above-mentioned coil. Includes, The above coil includes an inner coil and an outer coil arranged in order of proximity to the support member, and The above outer coil is connected to the above inner coil, and A coil electronic component in which the ratio of the cross-sectional area of each turn of the inner coil to the cross-sectional area of each turn of the outer coil is 1100/1150 or greater and 1200/1150 or less.
2. In paragraph 1, An insulating layer disposed between the inner coil and the outer coil, and A first via penetrating the insulating layer to electrically connect the inner coil and the outer coil. Coil electronic components including further
3. In paragraph 2, The support member comprises a first support surface, a second support surface facing the first surface, and a second via connecting the first support surface and the second support surface. The inner coil mentioned above is, A first inner coil pattern disposed on the first support surface, and A second inner coil pattern disposed on the second support surface and connected to the first inner coil pattern through the second via. A coil electronic component including
4. In Paragraph 3, The above insulating layer is, A first insulating layer covering the first inner coil pattern, and A second insulating layer covering the second inner coil pattern A coil electronic component including
5. In Paragraph 4, The above outer coil is, A first outer coil pattern disposed on the first insulating layer, and A second outer coil pattern disposed on the second insulating layer. A coil electronic component including
6. In paragraph 5, A third insulating layer disposed between the first outer coil pattern and the body, and A fourth insulating layer disposed between the second outer coil pattern and the body. Coil electronic components including further
7. In paragraph 5, The first outer coil pattern includes a first lead portion exposed from one side of the body, and The above second outer coil pattern is a coil electronic component comprising a second lead portion exposed from the other side of the body.
8. In Paragraph 7, A first external electrode disposed outside the body and connected to the first lead portion, and A coil electronic component further comprising a second external electrode disposed outside the body and connected to the second lead portion.
9. In paragraph 1, A coil electronic component further comprising a surface insulating layer disposed on the outer surface of the above body.

Description

Coil Electronic Components The present disclosure relates to a coil electronic component. Recently, as the functions of mobile devices have become more diverse and power consumption has increased, low-loss and highly efficient coil electronic components are being adopted around power management integrated circuits (PMICs) to extend battery life within mobile devices. Among these, thin-film inductors can be manufactured by forming a coil on a support member through sputtering or plating. A thin-film inductor with a multilayer coil structure to increase inductance has multiple coil layers connected through vias. In this case, there is a problem in that the DC resistance also increases as the capacitance of the inductor increases. FIG. 1 is a perspective view schematically showing a coil electronic component according to one embodiment. FIG. 2 is an exploded perspective view schematically showing the connection structure of the coils of the coil electronic component of FIG. 1. Figure 3 is a schematic cross-sectional view taken along the line I-I' of Figure 1. Figure 4 is a schematic cross-sectional view taken along the line II-II' of Figure 1. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. In order to clearly explain the invention in the drawings, parts unrelated to the explanation have been omitted, and the same reference numerals have been used for identical or similar components throughout the specification. Furthermore, in the attached drawings, some components may be exaggerated, omitted, or schematically depicted, and the size of each component does not entirely reflect its actual size. The attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included. Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. Furthermore, when it is said that a part, such as a layer, membrane, region, or plate, is "on" or "on" another part, this includes not only the case where it is "directly above" the other part, but also the case where there is another part in between. Conversely, when it is said that a part is "directly above" another part, it means that there is no other part in between. Also, saying that a part is "on" or "on" a reference part means that it is located above or below the reference part, and does not necessarily mean that it is located "on" or "on" in the direction opposite to gravity. Throughout the specification, terms such as “comprising” or “having” are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Accordingly, when a part is said to “comprising” a certain component, unless specifically stated otherwise, this means that it may include additional components rather than excluding other components. Additionally, throughout the specification, "planar" means when the subject part is viewed from above, and "cross-sectional" means when the cross-section obtained by vertically cutting the subject part is viewed from the side. Furthermore, throughout the specification, when the term "connected" is used, it does not mean only that two or more components are directly connected, but may also mean that two or more components are indirectly connected through other components, that they are connected not only physically but also electrically, or that they are a single unit although referred to by different names depending on their location or function. FIG. 1 is a perspective view schematically showing a coil electronic component according to one embodiment, FIG. 2 is an exploded perspective view schematically showing the connection structure of the coils of the coil electronic component of FIG. 1, FIG. 3 is a schematic cross-sectional view taken along line I-I' of FIG. 1, and FIG. 4 is a schematic cross-sectional view taken along line II-II' of FIG. 1. Referring to FIGS. 1, 2, 3 and 4, a coil electronic component (1000) according to one embodiment includes a body (100), a coil (200), a support member (300), a first external electrode (700), a second external electrode (800), and a surface insulating layer (900). The body (100) may be formed in a roughly rectangular shape, but the present embodiment is not