KR-20260066519-A - COIL COMPONENT

KR20260066519AKR 20260066519 AKR20260066519 AKR 20260066519AKR-20260066519-A

Abstract

A coil component according to one aspect of the present invention comprises a first surface and a second surface facing in a first direction, a plurality of sides connecting the first surface and the second surface, a body comprising a magnetic material, a coil disposed within the body, and first and second external electrodes disposed on the body spaced apart in the second direction and connected to both ends of the coil, wherein the body comprises a mold portion in which the coil is disposed and a cover portion comprising a surface in contact with the mold portion, and a raised pattern protruding from the surface is formed on the surface of the cover portion, and when viewed from the first direction, at least a portion of the raised pattern overlaps with the coil.

Inventors

김태현
박주형
권순광
김우진
이동진

Assignees

삼성전기주식회사

Dates

Publication Date: 20260512
Application Date: 20241104

Claims (15)

A body comprising a first surface and a second surface facing in a first direction, a plurality of sides connecting the first surface and the second surface, and a magnetic material; A coil disposed within the above body; and First and second external electrodes disposed on the body so as to be spaced apart in the second direction and connected to both ends of the coil; comprising The above body The above coil includes a mold portion in which the coil is disposed internally and a cover portion including a surface in contact with the mold portion. On one side of the above cover portion, an embossed pattern protruding from the above side is formed, and When viewed from the first direction, at least a portion of the embossed pattern overlaps with the coil, Coil parts.
In Article 1, When viewed from the first direction above, the embossed pattern shows a radial pattern extending from the center of one surface of the cover portion toward the outer edge. Coil parts.
In Article 1, The above mold portion includes a core penetrating the coil, Coil parts.
In Article 1, When viewed from the first direction above, the embossed pattern overlaps with the core, Coil parts.
In Article 1, Further comprising an insulating film covering the above coil; and The above embossed pattern is in contact with the insulating film, Coil parts.
In Article 1, The above embossed pattern does not penetrate the coil, Coil parts.
In Article 1, The above cover portion further includes a second surface facing the first surface in a first direction and a plurality of side surfaces connecting the first surface and the second surface, and The other surface of the above cover portion forms a second surface of the body, and A plurality of sides of the above cover portion form a plurality of sides of the above body, Coil parts.
In Article 1, The above cover portion includes a first metal magnetic powder, and The above mold part includes a second metal magnetic powder, and The above cover portion and the above mold portion have different particle size distributions. Coil parts.
In Article 1, Both ends of the above coil extend to both sides facing the second direction of the body, Coil parts.
In Article 1, The mold portion includes one surface forming a first surface of the body, another surface facing the one surface in a first direction and in contact with the cover portion, and a plurality of side surfaces connecting the one surface and the other surface. The above cover portion covers a plurality of sides of the above mold portion, Coil parts.
In Article 1, The above embossed pattern is spaced apart from a plurality of sides of the body, Coil parts.
In Article 1, Both ends of the above coil extend to the first surface of the body, Coil parts.
A body comprising a first surface and a second surface facing in a first direction, a plurality of sides connecting the first surface and the second surface, and a magnetic material; A coil disposed within the body and forming at least one turn; and First and second external electrodes disposed on the body so as to be spaced apart in a second direction and connected to both ends of the coil; comprising The above body The above coil includes a mold portion in which the coil is disposed internally and a cover portion including a surface in contact with the mold portion. On one side of the above cover portion, an embossed pattern protruding from the above side is formed, and When viewed from the first direction, the embossed pattern is spaced apart from a plurality of sides of the body, Coil parts.
In Article 13, The mold portion includes one surface forming a first surface of the body, another surface facing the one surface in a first direction and in contact with the cover portion, and a plurality of side surfaces connecting the one surface and the other surface. The above cover portion covers a plurality of sides of the above mold portion, Coil parts.
In Article 13, Both ends of the above coil extend to the first surface of the body, Coil parts.

Description

Coil Components The present invention relates to a coil component. The inductor, one of the coil components, is a representative passive electronic component used in electronic devices, along with resistors and capacitors. Inductors used in PC-related components such as DDR5 are being developed in the direction of high efficiency and large size due to the characteristics of components that use high current. The body of a large-sized inductor can be divided into a cover section and the remaining part where the coil is placed internally, using a single mold. Cracks may occur between these sections due to differences in applied materials and pressure conditions. FIG. 1 is a perspective view schematically showing a coil component according to one embodiment of the present invention. FIG. 2 is a drawing showing a cross-section along the line I-I' of FIG. 1. FIG. 3 is a view of FIG. 1 from the X direction. FIG. 4 is an enlarged view of each of A and B in FIG. 2. FIG. 5 is an enlarged view of A and B of FIG. 2, respectively, as a modified example. FIG. 6 is a view of the cover portion of FIG. 1 seen from the X direction. FIG. 7 is a view of the cover portion and coil of FIG. 1 seen from the X direction. FIG. 8 is a perspective view schematically showing a coil component according to another embodiment of the present invention. FIG. 9 is a drawing showing a cross-section along the line II-II' of FIG. 8. FIG. 10 is a view of FIG. 8 from the X direction. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “comprising” or “having” are intended to specify 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. Furthermore, throughout the specification, “on” means located above or below the subject part, and does not necessarily mean located on the upper side with respect to the direction of gravity. In addition, regarding the contact relationship between each component, the term "combination" is used not only to mean cases where each component is in direct physical contact with each other, but also to encompass cases where another component is interposed between each component and each component is in contact with that other component. The size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, and therefore the present invention is not necessarily limited to what is illustrated. In the drawing, the X direction may be defined as the first direction or thickness direction, the Y direction as the second direction or length direction, and the Z direction as the third direction or width direction. Hereinafter, coil components according to embodiments of the present invention will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. Various types of electronic components are used in electronic devices, and various types of coil components can be appropriately utilized among these electronic components for purposes such as noise removal. In other words, coil components in electronic devices can be used as power inductors, HF inductors, general beads, GHz beads, common mode filters, etc. (1st embodiment) FIG. 1 is a perspective view schematically showing a coil component according to an embodiment of the present invention. FIG. 2 is a cross-sectional view along the line I-I' of FIG. 1. FIG. 3 is a view taken from the X direction of FIG. 1. FIG. 4 is an enlarged view of A and B, respectively, of FIG. 2. FIG. 5 is an enlarged view of A and B, respectively, of FIG. 2 as a modified example. FIG. 6 is a view of the cover portion of FIG. 1 taken from the X direction. FIG. 7 is a view of the cover portion and the coil of FIG. 1 taken from the X direction. Referring to FIGS. 1 to 7, a coil component (1000) according to the first embodiment of the present invention includes a body (100), a coil (300), and external electrodes (400, 500). The body (100) forms the exterior of the coil component (1000) according to the first embodiment and has a coil (300) embedded inside. The body (100) can be formed in the shape of a cuboid overall. The body (100) may include, based on FIG. 1, a first surface (101) and a second surface (102) facing each other in the X direction (first direction), a first side (103) and a second side (104) facing each other in the Y direction (second direction), and a third side (105) and a fourth side (106) facing each other i