Multilayer ceramic electronic component and electronic device including same
By alternately stacking and rotating the internal electrodes in multilayer ceramic capacitors, and using high dielectric layer and conductive materials, the problem of insufficient reliability and electrical characteristics of multilayer ceramic capacitors under compactness and large capacity is solved, and the improvement of electrical signal transmission and process simplification is achieved.
Patent Information
- Application Number
- CN202411503519.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-25
- Filing Date
- 2024-10-25
- Publication Date
- 2025-07-25
AI Technical Summary
While existing multi-layer ceramic capacitors are compact and large in capacity, it is difficult to take into account both reliability and electrical characteristics, especially the high equivalent series inductance (ESL), which affects the transmission of electrical signals.
A multi-layer ceramic electronic assembly is designed in which the inner electrodes adopt first and second internal electrodes stacked alternately, the outer electrodes are arranged alternately in a specific direction and arranged by rotation angles to reduce interference, using conductive materials such as nickel, copper or alloys thereof, and the dielectric layer uses high dielectric constant ceramic materials such as barium titanate or strontium titanate.
The electrical characteristics of compact multi-layer ceramic capacitors are improved, the equivalent series inductance is reduced, the electrical signal transmission is improved, the process is simplified, the external electrode spacing is reasonable, and the interference is reduced.
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Figure CN120376334A_ABST
Abstract
Description
[0001] Cross - reference to related applications
[0002] This application claims the priority of Korean Patent Application No. 10 - 2024 - 0011689, filed with the Korean Intellectual Property Office on January 25, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical field
[0003] The present inventive concept relates to a multi - layer ceramic electronic component and an electronic device including the same, and more particularly, to a multi - layer ceramic capacitor and an electronic device including the same. Background art
[0004] As electronic products become more compact and have larger capacities, the electronic components used in electronic products also require compactness and large capacities. One such electronic component, a multi - layer ceramic capacitor (MLCC), is mounted on printed circuit boards of various electronic products such as display devices (e.g., liquid crystal displays (LCDs) and plasma display panels (PDPs)), computers, and smart phones for charging or discharging. The multi - layer ceramic capacitor can be used as a component for various electronic products due to its compactness and large capacity. Recently, various studies have been conducted on multi - layer ceramic capacitors to increase their reliability in addition to compactness and large capacity. Summary of the invention
[0005] Some embodiments of the present inventive concept provide a multi - layer ceramic electronic component having a compact size and an electronic device including the same.
[0006] Some embodiments of the present inventive concept provide a multi - layer ceramic electronic component having improved electrical characteristics and an electronic device including the same.
[0007] Aspects of the present inventive concept are not limited to those mentioned above, and other aspects not mentioned above will become apparent to those skilled in the art from the following description.
[0008] According to some embodiments of the inventive concept, a multi-layer ceramic electronic component includes: a capacitor body including a plurality of first internal electrodes and a plurality of second internal electrodes alternately stacked, the capacitor body having a plurality of first side surfaces opposite to each other in a first direction, a plurality of second side surfaces opposite to each other in a second direction orthogonal to the first direction, a plurality of third side surfaces opposite to each other in a third direction intersecting the first and second directions, and a plurality of fourth side surfaces opposite to each other in a fourth direction orthogonal to the third direction; and a plurality of external electrodes, each of the plurality of external electrodes being located on a corresponding one of the first to fourth side surfaces of the capacitor body. Each of the plurality of first internal electrodes includes a plurality of first protruding portions exposed at the first side surface; and a plurality of second protruding portions exposed at the second side surface. Each of the plurality of second internal electrodes includes a plurality of third protruding portions exposed at the third side surface; and a plurality of fourth protruding portions exposed at the fourth side surface.
[0009] According to some embodiments of the inventive concept, a multi-layer ceramic electronic component includes: a capacitor body having at least three first side surfaces and a plurality of second side surfaces having the same number as the number of the first side surfaces, wherein each of the second side surfaces is between two adjacent ones of the at least three first side surfaces and connects two adjacent ones of the at least three first side surfaces; a plurality of first external electrodes, wherein each of the plurality of first external electrodes is on a corresponding one of the at least three first side surfaces of the capacitor body and extends longitudinally; and a plurality of second external electrodes, wherein each of the plurality of second external electrodes is on a corresponding one of the second side surfaces of the capacitor body and extends longitudinally. The capacitor body includes a plurality of first internal electrodes and a plurality of second internal electrodes alternately stacked longitudinally; and a plurality of dielectric layers between the plurality of first internal electrodes and the plurality of second internal electrodes. Each of the plurality of first internal electrodes includes: a first main portion having a polygonal shape in a plan view; and a plurality of first protruding portions extending from the first main portion toward the plurality of first external electrodes. Each of the plurality of second internal electrodes includes: a second main portion having a polygonal shape in a plan view; and a plurality of second protruding portions extending from the second main portion toward the plurality of second external electrodes.
[0010] According to some embodiments of the inventive concept, an electronic device includes: a substrate; and a multilayer ceramic capacitor mounted on the substrate. The multilayer ceramic capacitor includes: a capacitor body including a plurality of first internal electrodes and a plurality of second internal electrodes stacked on a top surface of the substrate in a longitudinal direction, wherein the capacitor body has a regular octagonal planar shape in which a plurality of first side surfaces and a plurality of second side surfaces are alternately arranged; a plurality of first external electrodes, each of the plurality of first external electrodes being on a corresponding one of the plurality of first side surfaces of the capacitor body, the first external electrodes extending in the longitudinal direction; and a plurality of second external electrodes, each of the plurality of second external electrodes being on a corresponding one of the plurality of second side surfaces of the capacitor body, the plurality of second external electrodes extending in the longitudinal direction. Each of the plurality of first internal electrodes and each of the plurality of second internal electrodes includes: a main portion; and a plurality of protruding portions extending from the main portion in different directions. The plurality of first internal electrodes and the plurality of second internal electrodes may have the same planar shape. The plurality of first internal electrodes and the plurality of second internal electrodes may be rotationally displaced from each other by an angle of about 45 degrees. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a perspective view showing a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0012] Figure 2 is an exploded perspective view showing a capacitor body of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0013] Figure 3 is a plan view showing a first internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0014] Figure 4 is a plan view showing a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0015] Figure 5 is a plan view showing a first internal electrode and a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0016] Figure 6 is a side view showing a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0017] Figure 7 and Figure 8 is a cross-sectional view showing a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0018] Figure 9is a plan view showing a first internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0019] Figure 10 is a plan view showing a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0020] Figure 11 is a plan view showing a first internal electrode and a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0021] Figure 12 is a perspective view showing a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0022] Figure 13 is a plan view showing a first internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0023] Figure 14 is a plan view showing a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0024] Figure 15 is a plan view showing a first internal electrode and a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0025] Figure 16 is a plan view showing a first internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0026] Figure 17 is a plan view showing a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0027] Figure 18 is a plan view showing a first internal electrode and a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0028] Figure 19 is a cross-sectional view showing an electronic device according to some embodiments of the inventive concept. DETAILED DESCRIPTION
[0029] A multilayer ceramic electronic component according to the inventive concept will be discussed with reference to the accompanying drawings.
[0030] Figure 1 is a perspective view showing a multilayer ceramic electronic component according to some embodiments of the inventive concept. Figure 2 is an exploded perspective view showing a capacitor body of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0031] Reference Figure 1 and Figure 2 Figure 2 , the multilayer ceramic electronic component 1000 may be a multilayer ceramic capacitor. The multilayer ceramic electronic component 1000 may include a capacitor body 100, a first external electrode 150a, and a second external electrode 150b.
[0032]
[0032] The capacitor body 100 may be a regular polygon when viewed in a plane. Hereinafter, the shape of the capacitor body 100 will be described in detail using an embodiment of the capacitor body 100. The capacitor body 100 may have a first side surface 100s1 facing each other in a first direction D1, a second side surface 100s2 facing each other in a second direction D2, a third side surface 100s3 facing each other in a third direction D3, and a fourth side surface 100s4 facing each other in a fourth direction D4.
[0033]
[0033] The first direction D1, the second direction D2, the third direction D3, and the fourth direction D4 may be horizontal directions. The first direction D1 and the second direction D2 may be orthogonal to each other. The third direction D3 and the fourth direction D4 may be orthogonal to each other. The third direction D3 and the fourth direction D4 may intersect the first direction D1 and the second direction D2. The third direction D3 and the fourth direction D4 may form an angle of about 45 degrees with the first direction D1 and the second direction D2.
[0034]
[0034] The first side surface 100s1, the second side surface 100s2, the third side surface 100s3, and the fourth side surface 100s4 may have the same width in the horizontal direction. For example, when viewed in a plane, the capacitor body 100 may have a regular octagon. The capacitor body 100 may have a top surface 100U and a bottom surface 100L facing each other in a fifth direction D5. The fifth direction D5 may be perpendicular to the first direction D1, the second direction D2, the third direction D3, and the fourth direction D4. For example, the capacitor body 100 may have an octagonal prism (e.g., a prism) shape.
[0035] The first external electrode 150a can be correspondingly disposed on the first side surface 100s1 and the second side surface 100s2 of the capacitor body 100. The first external electrode 150a can cover some portions of the first side surface 100s1 and some portions of the second side surface 100s2. The first external electrode 150a can extend to the top surface 100U and the bottom surface 100L of the capacitor body 100 to cover some portions of the top surface 100U and some portions of the bottom surface 100L. The first external electrode 150a can surround the upper end portion of the capacitor body 100 formed between the top surface 100U and the first side surface 100s1 or the second side surface 100s2, and can also surround the lower end portion of the capacitor body 100 formed between the bottom surface 100L and the first side surface 100s1 or the second side surface 100s2 (i.e., each of the first external electrodes 150a can extend around the edge between the top surface 100U and the corresponding one of the plurality of first side surfaces; and each of the first external electrodes 150a can extend around the edge between the bottom surface 100L and the corresponding one of the plurality of first side surfaces).
[0036] The second external electrode 150b can be correspondingly disposed on the third side surface 100s3 and the fourth side surface 100s4 of the capacitor body 100. The second external electrode 150b can cover some portions of the third side surface 100s3 and some portions of the fourth side surface 100s4. The second external electrode 150b can extend to the top surface 100U and the bottom surface 100L of the capacitor body 100 to cover some portions of the top surface 100U and some portions of the bottom surface 100L. The second external electrode 150b can surround the upper end portion of the capacitor body 100 formed between the top surface 100U and the third side surface 100s3 or the fourth side surface 100s4, and can also surround the lower end portion of the capacitor body 100 formed between the bottom surface 100L and the third side surface 100s3 or the fourth side surface 100s4 (i.e., each of the second external electrodes 150b can extend around the edge between the top surface 100U and the corresponding one of the plurality of third side surfaces and the fourth side surfaces; and each of the second external electrodes 150b can extend around the edge between the bottom surface 100L and the corresponding one of the plurality of third side surfaces and the fourth side surfaces).
[0037] The first external electrode 150a and the second external electrode 150b can include a conductive material. For example, the first external electrode 150a and the second external electrode 150b can include nickel (Ni), copper (Cu), palladium (Pd), or any alloy thereof.
[0038] The capacitor body 100 may include internal electrodes 120a and 120b and a dielectric layer 110 interposed between the internal electrodes 120a and 120b. The internal electrodes 120a and 120b and the dielectric layer 110 may be alternately stacked, for example, along a fifth direction D5. The internal electrodes 120a and 120b may include a first internal electrode 120a and a second internal electrode 120b alternately stacked on the lowermost one of the dielectric layer 110. The lowermost one of the dielectric layer 110 may cover the uppermost one of the internal electrodes 120a and 120b. The dielectric layer 110 may include a ceramic material having a high dielectric constant. For example, the dielectric layer 110 may include barium titanate (BaTiO3) or strontium titanate (SrTiO3). The internal electrodes 120a and 120b may include a conductive material. For example, the internal electrodes 120a and 120b may include nickel (Ni), copper (Cu), palladium (Pd), or any alloy thereof.
[0039] Figure 3 A plan view showing a first internal electrode 120a of a multilayer ceramic electronic component according to some embodiments of the inventive concept is shown. Figure 4 A plan view showing a second internal electrode 120b of a multilayer ceramic electronic component according to some embodiments of the inventive concept is shown. Figure 5 A plan view of a first internal electrode 120a and a second internal electrode 120b in a multilayer ceramic electronic component according to some embodiments of the inventive concept is shown, which shows a first internal electrode and a second internal electrode overlapping each other.
[0040] Referring to Figures 3 to 5 , each of the first internal electrodes 120a may include a first main portion 130a, a plurality of first protruding portions 140a1 extending from the first main portion 130a, and a plurality of second protruding portions 140a2 extending from the first main portion 130a.
[0041] The first main portion 130a may have a planar shape corresponding to the planar shape of the capacitor body 100. For example, when viewed in a plane, the first main portion 130a may have a regular octagon. The first main portion 130a may have side surfaces facing a first direction D1, a second direction D2, a third direction D3, and a fourth direction D4. The planar shape of the first main portion 130a may be smaller than the planar shape of the capacitor body 100. For example, the width of the first main portion 130a in a horizontal direction may be smaller than the width of the capacitor body 100 in the horizontal direction.
[0042] When viewed in a plane, the first main portion 130a may be located on the central portion of the capacitor body 100. For example, the first main portion 130a may be spaced apart from the first side surface 100s1, the second side surface 100s2, the third side surface 100s3, and the fourth side surface 100s4 of the capacitor body 100. The same spacing distance may be set between the first main portion 130a and each of the first side surface 100s1, the second side surface 100s2, the third side surface 100s3, and the fourth side surface 100s4 of the capacitor body 100.
[0043] The first protruding portion 140a1 and the second protruding portion 140a2 may extend from the first main portion 130a. For example, the first protruding portion 140a1 may extend correspondingly from the side surface of the first main portion 130a in the first direction D1, and the second protruding portion 140a2 may extend correspondingly from the side surface of the first main portion 130a in the second direction D2. The first protruding portion 140a1 may extend toward the first side surface 100s1 of the capacitor body 100, and the second protruding portion 140a2 may extend toward the second side surface 100s2 of the capacitor body 100.
[0044] The first side surface 100s1 of the capacitor body 100 may correspondingly expose the first protruding portion 140a1, and the second side surface 100s2 of the capacitor body 100 may correspondingly expose the second protruding portion 140a2. On the first side surface 100s1 of the capacitor body 100, the first protruding portion 140a1 may be connected to the first external electrode 150a, and on the second side surface 100s2 of the capacitor body 100, the second protruding portion 140a2 may be connected to the first external electrode 150a.
[0045] The first protruding portion 140a1 and the second protruding portion 140a2 may each have a linear shape extending from the first main portion 130a. The horizontal width (width in the second direction D2) of the first protruding portion 140a1 may be smaller than the horizontal width (width in the second direction D2) of a side surface of the first main portion 130a that is connected to the first protruding portion 140a1. The horizontal width of the first protruding portion 140a1 may be smaller than the horizontal width (width in the second direction D2) of the first side surface 100s1. For example, the horizontal width of the first protruding portion 140a1 may be about 1 / 3 to about 2 / 3 of the horizontal width of the first side surface 100s1. The horizontal width (width in the first direction D1) of the second protruding portion 140a2 may be smaller than the horizontal width (width in the first direction D1) of a side surface of the first main portion 130a that is connected to the second protruding portion 140a2. The horizontal width of the second protruding portion 140a2 may be smaller than the horizontal width (width in the first direction D1) of the second side surface 100s2. For example, the horizontal width of the second protruding portion 140a2 may be about 1 / 3 to about 2 / 3 of the horizontal width of the second side surface 100s2.
[0046] Each of the second internal electrodes 120b may include a second main portion 130b, a plurality of third protruding portions 140b1 extending from the second main portion 130b, and a plurality of fourth protruding portions 140b2 extending from the second main portion 130b.
[0047] The second main portion 130b may have a planar shape corresponding to the planar shape of the capacitor body 100. For example, when viewed in a plane, the second main portion 130b may have a regular octagon. The second main portion 130b may have side surfaces facing the first direction D1, the second direction D2, the third direction D3, and the fourth direction D4. The planar shape of the second main portion 130b may be smaller than the planar shape of the capacitor body 100. For example, the width of the second main portion 130b in the horizontal direction may be smaller than the width of the capacitor body 100 in the horizontal direction.
[0048] When viewed in a plane, the second main portion 130b may be located on the central portion of the capacitor body 100. For example, the second main portion 130b may be spaced apart from the first side surface 100s1, the second side surface 100s2, the third side surface 100s3, and the fourth side surface 100s4 of the capacitor body 100. The same spacing distance may be set between the second main portion 130b and each of the first side surface 100s1, the second side surface 100s2, the third side surface 100s3, and the fourth side surface 100s4 of the capacitor body 100.
[0049] The third protruding portion 140b1 and the fourth protruding portion 140b2 can extend from the second main portion 130b. For example, the third protruding portion 140b1 can correspondingly extend from a side surface of the second main portion 130b in the third direction D3, and the fourth protruding portion 140b2 can correspondingly extend from a side surface of the second main portion 130b in the fourth direction D4. The third protruding portion 140b1 can extend toward the third side surface 100s3 of the capacitor body 100, and the fourth protruding portion 140b2 can extend toward the fourth side surface 100s4 of the capacitor body 100.
[0050] The third side surface 100s3 of the capacitor body 100 can correspondingly expose the third protruding portion 140b1, and the fourth side surface 100s4 of the capacitor body 100 can correspondingly expose the fourth protruding portion 140b2. On the third side surface 100s3 of the capacitor body 100, the third protruding portion 140b1 can be connected to the second external electrode 150b, and on the fourth side surface 100s4 of the capacitor body 100, the fourth protruding portion 140b2 can be connected to the second external electrode 150b.
[0051] The third protruding portion 140b1 and the fourth protruding portion 140b2 can each have a linear shape extending from the second main portion 130b. The horizontal width (width in the fourth direction D4) of the third protruding portion 140b1 can be smaller than the horizontal width (width in the fourth direction D4) of a side surface of the second main portion 130b that is connected to the third protruding portion 140b1. The horizontal width of the third protruding portion 140b1 can be smaller than the horizontal width (width in the fourth direction D4) of the third side surface 100s3. For example, the horizontal width of the third protruding portion 140b1 can be about 1 / 3 to about 2 / 3 of the horizontal width of the third side surface 100s3. The horizontal width (width in the fourth direction D4) of the fourth protruding portion 140b2 can be smaller than the horizontal width (width in the fourth direction D4) of a side surface (the side surface connected to the fourth protruding portion 140b2) of the second main portion 130b. The horizontal width of the fourth protruding portion 140b2 can be smaller than the horizontal width (width in the fourth direction D4) of the fourth side surface 100s4. For example, the horizontal width of the fourth protruding portion 140b2 can be about 1 / 3 to about 2 / 3 of the horizontal width of the fourth side surface 100s4.
[0052] The first internal electrode 120a and the second internal electrode 120b can be stacked in the fifth direction D5. The first internal electrode 120a can have the same planar shape as the second internal electrode 120b, and the first internal electrode 120a and the second internal electrode 120b can be moved rotationally by an angle of about 45 degrees. The first main portion 130a of the first internal electrode 120a can vertically overlap with the second main portion 130b of the second internal electrode 120b along the fifth direction D5.
[0053] The first internal electrode 120a and the second internal electrode 120b can be buried in the dielectric layer 110. The first internal electrode 120a and the second internal electrode 120b can be spaced apart from each other with the dielectric layer 110 therebetween. A metal-insulator-metal (MIM) structured capacitor can be constituted by one first internal electrode 120a, one second internal electrode 120b adjacent to the one first internal electrode 120a, and the dielectric layer 110 between the one first internal electrode 120a and the one second internal electrode 120b. The capacitance of the capacitor can depend on the overlapping area of the first internal electrode 120a and the second internal electrode 120b, for example, the overlapping area of the first main portion 130a and the second main portion 130b. Therefore, the areas of the first main portion 130a and the second main portion 130b can be adjusted to obtain the capacitance required for the multilayer ceramic electronic component 1000. The dielectric layer 110 can bury the first internal electrode 120a and the second internal electrode 120b, and can fill the space between the first protruding portion 140a1 and the second protruding portion 140a2 of the first internal electrode 120a and the space between the third protruding portion 140b1 and the fourth protruding portion 140b2 of the second internal electrode 120b.
[0054] The first internal electrode 120a can be connected to the first external electrode 150a, and the second internal electrode 120b can be connected to the second external electrode 150b.
[0055] Figure 6 A side view of a multilayer ceramic electronic component according to some embodiments of the inventive concept is shown, showing the multilayer ceramic electronic component viewed from the front in the second direction D2. Figure 7 and Figure 8 A cross-sectional view showing a multilayer ceramic electronic component according to some embodiments of the inventive concept is shown. Figure 7 Corresponding to a cross-sectional view taken along Figure 5 line A-A'. Figure 8 Corresponding to a cross-sectional view taken along Figure 5 line B-B'.
[0056] Referring to Figures 5 to 8, the first side surface 100s1 and the second side surface 100s2 of the capacitor body 100 may expose the first protruding portion 140a1 and the second protruding portion 140a2 (i.e., the first protruding portion 140a1 and the second protruding portion 140a2 are respectively exposed at the first side surface 100s1 and the second side surface 100s2), and the first protruding portion 140a1 and the second protruding portion 140a2 may be connected to the first external electrode 150a. The first external electrode 150a may extend in the fifth direction D5 and may be connected to the first internal electrodes 120a spaced apart from each other.
[0057] The third side surface 100s3 and the fourth side surface 100s4 of the capacitor body 100 may expose the third protruding portion 140b1 and the fourth protruding portion 140b2 (i.e., the third protruding portion 140b1 and the fourth protruding portion 140b2 are respectively exposed at the third side surface 100s3 and the fourth side surface 100s4), and the third protruding portion 140b1 and the fourth protruding portion 140b2 may be connected to the second external electrode 150b. The second external electrode 150b may extend in the fifth direction D5 and may be connected to the second internal electrodes 120b spaced apart from each other.
[0058] The first external electrode 150a and the second external electrode 150b may be terminals for transmitting an electrical signal to the capacitor body 100.
[0059] According to some embodiments of the inventive concept, the multilayer ceramic electronic component 1000 may be configured to have at least three first external electrodes 150a and at least three second external electrodes 150b provided. With this configuration, each of the first internal electrodes 120a and the second internal electrodes 120b may have three or more terminals, so that the equivalent series inductance (ESL) may be reduced. In addition, only one of the external electrodes 150a and 150b may be provided on each of the side surfaces of the capacitor body 100. Therefore, two adjacent external electrodes among the external electrodes 150a and 150b may be spaced apart from each other at a wide interval, and the capacitor body 100 may be located between the external electrodes 150a and 150b, for example, on a straight line connecting two adjacent ones of the external electrodes 150a and 150b. Therefore, there is less interference between the external electrodes 150a and 150b. In summary, the multilayer ceramic electronic component 1000 may have improved electrical characteristics.
[0060] In addition, as the capacitor body 100 is arranged in the form of a regular octagon and as the external electrodes 150a and 150b are provided on the side surfaces 100s1 to 100s4 of the capacitor body 100, the multilayer ceramic electronic component 1000 can be configured to have a symmetric shape when viewed in a plane. Accordingly, even if the size of the capacitor body 100 is small, a sufficient interval can be formed between the external electrodes 150a and 150b, and the multilayer ceramic electronic component 1000 can be made compact.
[0061] In addition, the first internal electrode 120a and the second internal electrode 120b can be rotationally displaced only relative to each other and can have substantially the same planar shape. Accordingly, the first internal electrode 120a and the second internal electrode 120b can be manufactured by the same process, and the multilayer ceramic electronic component 1000 can be manufactured by a simplified process.
[0062] In the following embodiments, the same reference numerals are assigned to elements identical to those discussed in the embodiments of Figure 1 and Figure 8 and, for ease of description, repeated explanations thereof will be omitted or deleted. Hereinafter, the focus will be on the differences between the embodiments of Figure 1 and Figure 8 and the embodiments described below.
[0063] Figure 9 FIG. shows a plan view of a first internal electrode 120a of a multilayer ceramic electronic component showing some embodiments according to the inventive concept. Figure 10 FIG. shows a plan view of a second internal electrode 120b of a multilayer ceramic electronic component showing some embodiments according to the inventive concept. Figure 11 FIG. shows a plan view of a first internal electrode and a second internal electrode in a multilayer ceramic electronic component showing some embodiments according to the inventive concept, which shows a first internal electrode and a second internal electrode overlapping each other.
[0064] Figures 1 to 8 It is depicted that the horizontal width of a first protruding portion 140a1 and the horizontal width of a second protruding portion 140a2 of the first internal electrode 120a are less than the horizontal width of a first main portion 130a of the first internal electrode 120a, and the horizontal width of a third protruding portion 140b1 and the horizontal width of a fourth protruding portion 140b2 of the second internal electrode 120b are less than the horizontal width of a second main portion 130b of the second internal electrode 120b, but the inventive concept is not limited thereto.
[0065] Referring to Figures 9 to 11, the horizontal width of the first protruding portion 140a1 of the first internal electrode 120a and the horizontal width of the second protruding portion 140a2 may be the same as the horizontal width of the first main portion 130a of the first internal electrode 120a. For example, as Figure 9 shown, each of the first internal electrodes 120a may have a cross-planar shape obtained when the first protruding portion 140a1 extending in the first direction D1 intersects the second protruding portion 140a2 extending in the second direction D2.
[0066] The second internal electrode 120b may have a planar shape that is substantially the same as or similar to the planar shape of the first internal electrode 120a. The horizontal width of the third protruding portion 140b1 of the second internal electrode 120b and the horizontal width of the fourth protruding portion 140b2 may be the same as the horizontal width of the second main portion 130b of the second internal electrode 120b. For example, as Figure 10 shown, each of the second internal electrodes 120b may have a cross-planar shape obtained when the third protruding portion 140b1 extending in the third direction D3 intersects the fourth protruding portion 140b2 extending in the fourth direction D4.
[0067] As Figure 11 shown, the first internal electrode 120a and the second internal electrode 120b may be stacked in a fifth direction D5 (i.e., the first internal electrode 120a and the second internal electrode 120b may be stacked on top of each other in the fifth direction D5). The first internal electrode 120a may have the same planar shape as the planar shape of the second internal electrode 120b, and the first internal electrode 120a and the second internal electrode 120b may be rotationally moved by an angle of about 45 degrees, as shown. The first main portion 130a of the first internal electrode 120a may vertically overlap the second main portion 130b of the second internal electrode 120b along the fifth direction D5.
[0068] Figure 12 is a perspective view showing a multi-layer ceramic electronic component according to some embodiments of the inventive concept. Figure 13 shows a plan view of the first internal electrode of a multi-layer ceramic electronic component showing some embodiments of the inventive concept. Figure 14 shows a plan view of the second internal electrode of a multi-layer ceramic electronic component showing some embodiments of the inventive concept. Figure 15 shows a plan view of the first internal electrode and the second internal electrode of a multi-layer ceramic electronic component showing some embodiments of the inventive concept.
[0069] Referring to Figures 12 to 15 , the multi-layer ceramic electronic component 1001 may include a capacitor body 100, a first external electrode 150a, and a second external electrode 150b.
[0070] The capacitor body 100 may have side surfaces that face each other in a sixth direction D6, side surfaces that face each other in a seventh direction D7, and side surfaces that face each other in an eighth direction D8. The sixth direction D6, the seventh direction D7, and the eighth direction D8 may be horizontal directions. An angle of approximately 60 degrees may be provided between the sixth direction D6, the seventh direction D7, and the eighth direction D8. The side surfaces of the capacitor body 100 may have the same width in the horizontal direction. For example, when viewed in a plane, the capacitor body 100 may have a regular hexagon shape. The capacitor body 100 may have a top surface and a bottom surface that face each other in a fifth direction D5. The fifth direction D5 may be perpendicular to the sixth direction D6, the seventh direction D7, and the eighth direction D8. For example, the capacitor body 100 may have a hexagonal prism shape.
[0071] The first external electrode 150a and the second external electrode 150b may be correspondingly provided on the side surfaces of the capacitor body 100. In this case, the first external electrode 150a and the second external electrode 150b may be provided on the side surfaces of the capacitor body 100 in a one-to-one correspondence (i.e., one first external electrode 150a is on one side surface, one second external electrode 150b is on the other side surface, etc.), and the first external electrode 150a and the second external electrode 150b may be alternately arranged (i.e., adjacent side surfaces have different first external electrodes 150a and second external electrodes 150b). For example, the first external electrode 150a may be provided on one of two adjacent side surfaces of the capacitor body 100, and the second external electrode 150b may be provided on the other of the two adjacent side surfaces of the capacitor body 100. The first external electrode 150a and the second external electrode 150b may cover some portions of the side surfaces of the capacitor body 100. The first external electrode 150a and the second external electrode 150b may extend onto the top surface and the bottom surface of the capacitor body 100 to cover some portions of the top surface and the bottom surface of the capacitor body 100, as shown. The first external electrode 150a and the second external electrode 150b may surround the upper end portion formed between the top surface and the side surface of the capacitor body 100, and may also surround the lower end portion formed between the bottom surface and the side surface of the capacitor body 100 (i.e., the first external electrode 150a and the second external electrode 150b extend around the edge between the top surface and the side surface of the capacitor body 100, and extend around the edge between the bottom surface and the side surface of the capacitor body 100).
[0072] The capacitor body 100 may include internal electrodes 120a and 120b and a dielectric layer 110 interposed between the internal electrodes 120a and 120b.
[0073] Each of the first internal electrodes 120a may include a first main portion 130a and a plurality of fifth protruding portions 140a3 extending from the first main portion 130a.
[0074] The first main portion 130a may have a planar shape corresponding to the planar shape of the capacitor body 100. For example, the first main portion 130a may have a regular hexagon in a plan view, as Figure 13 shown. The planar shape of the first main portion 130a may be smaller than the planar shape of the capacitor body 100.
[0075] The fifth protruding portions 140a3 may extend from the first main portion 130a. For example, the fifth protruding portions 140a3 may correspondingly extend from the side surfaces of the first main portion 130a. With this configuration, the fifth protruding portions 140a3 may be provided only on three of the six side surfaces of the first main portion 130a, as Figure 13 shown. For example, the fifth protruding portion 140a3 may be provided on one of two adjacent side surfaces of the first main portion 130a and may not be provided on the other of the two adjacent side surfaces of the first main portion 130a. The fifth protruding portion 140a3 may extend to the side surface of the capacitor body 100. Each of the side surfaces of the capacitor body 100 may expose one fifth protruding portion 140a3 (i.e., the fifth protruding portion 140a3 is exposed at the side surface of the capacitor body 100). On the side surface of the capacitor body 100, the fifth protruding portion 140a3 may be connected to the first external electrode 150a.
[0076] Each of the fifth protruding portions 140a3 may have a linear shape extending from the first main portion 130a. The horizontal width of the fifth protruding portion 140a3 may be smaller than the horizontal width of each side surface of the first main portion 130a that is connected to the fifth protruding portion 140a3. The horizontal width of the fifth protruding portion 140a3 may be smaller than the horizontal width of each side surface of the capacitor body 100. For example, the horizontal width of the fifth protruding portion 140a3 may be about 1 / 3 to about 2 / 3 of the horizontal width of each side surface of the capacitor body 100.
[0077] Each of the second internal electrodes 120b may include a second main portion 130b and a plurality of sixth protruding portions 140b3 extending from the second main portion 130b.
[0078] The second main portion 130b may have a planar shape corresponding to the planar shape of the capacitor body 100. For example, the second main portion 130b may have a regular hexagon in a plan view, as Figure 14 shown. The planar shape of the second main portion 130b may be smaller than the planar shape of the capacitor body 100.
[0079] The sixth protruding portion 140b3 can extend from the second main portion 130b. For example, the sixth protruding portion 140b3 can correspondingly extend from a side surface of the second main portion 130b. With this configuration, the sixth protruding portion 140b3 can be provided only on three of the six side surfaces of the second main portion 130b, as Figure 14 shown. For example, the sixth protruding portion 140b3 can be provided on one of two adjacent side surfaces of the second main portion 130b and not provided on the other of the two adjacent side surfaces of the second main portion 130b. The sixth protruding portion 140b3 can extend toward a side surface of the capacitor body 100. Each of the side surfaces of the capacitor body 100 can expose a sixth protruding portion 140b3 (i.e., the sixth protruding portion 140b3 is exposed at the side surface). On the side surface of the capacitor body 100, the sixth protruding portion 140b3 can be connected to the second external electrode 150b.
[0080] Each of the sixth protruding portions 140b3 can have a linear shape extending from the second main portion 130b. The horizontal width of the sixth protruding portion 140b3 can be smaller than the horizontal width of each side surface of the second main portion 130b that is connected to the sixth protruding portion 140b3. The horizontal width of each of the six protruding portions 140b3 can be smaller than the horizontal width of each side surface of the capacitor body 100. For example, the horizontal width of the sixth protruding portion 140b3 can be about 1 / 3 to about 2 / 3 of the horizontal width of each side surface of the capacitor body 100.
[0081] The first internal electrode 120a and the second internal electrode 120b can be stacked in the fifth direction D5 (i.e., the first internal electrode 120a and the second internal electrode 120b can be stacked on top of each other in the fifth direction D5). The first internal electrode 120a can have the same planar shape as the second internal electrode 120b, and the first internal electrode 120a and the second internal electrode 120b can be rotationally moved by an angle of about 60 degrees, as Figure 15 shown. The first main portion 130a of the first internal electrode 120a can vertically overlap the second main portion 130b of the second internal electrode 120b along the fifth direction D5.
[0082] The first internal electrode 120a and the second internal electrode 120b may be embedded in the dielectric layer 110. The first internal electrode 120a and the second internal electrode 120b may be spaced apart from each other with the dielectric layer 110 therebetween. A metal-insulator-metal (MIM) structured capacitor may be constituted by a first internal electrode 120a, a second internal electrode 120b adjacent to the first internal electrode 120a, and the dielectric layer 110 positioned between the first internal electrode 120a and the second internal electrode 120b.
[0083] The first internal electrode 120a may be connected to the first external electrode 150a, and the second internal electrode 120b may be connected to the second external electrode 150b.
[0084] Figure 16 is a plan view of a first internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept. Figure 17 is a plan view of a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept. Figure 18 is a plan view of a first internal electrode and a second internal electrode of a multilayer ceramic electronic component according to some embodiments of the inventive concept.
[0085] Referring to Figures 16 to 18 , the multilayer ceramic electronic component 1001 may include a capacitor body 100, a first external electrode 150a, and a second external electrode 150b.
[0086] When viewed in a plane, the capacitor body 100 may have a regular decagon. Side surfaces of the capacitor body 100 may have the same width in a horizontal direction. The capacitor body 100 may have a top surface and a bottom surface that face each other in a fifth direction D5. For example, the capacitor body 100 may have a decagonal prism shape.
[0087] The first external electrode 150a and the second external electrode 150b may be correspondingly provided on the side surface of the capacitor body 100, as shown. In this case, the external electrodes 150a and 150b may be provided on the side surface of the capacitor body 100 in a one-to-one correspondence (i.e., one first external electrode 150a is on one side surface, one second external electrode 150b is on the other side surface, etc.), and the first external electrode 150a and the second external electrode 150b may be alternately arranged (i.e., adjacent side surfaces have one of the respective different first electrode 150a and second electrode 150b). For example, the first external electrode 150a may be provided on one of two adjacent side surfaces of the capacitor body 100, and the second external electrode 150b may be provided on the other of the two adjacent side surfaces of the capacitor body 100. The first external electrode 150a and the second external electrode 150b may cover some portions of the side surface of the capacitor body 100. The first external electrode 150a and the second external electrode 150b may extend to the top surface and the bottom surface of the capacitor body 100 to cover some portions of the top surface and the bottom surface of the capacitor body 100, as shown. The first external electrode 150a and the second external electrode 150b may surround the upper end portion formed between the top surface and the side surface of the capacitor body 100, and may also surround the lower end portion formed between the bottom surface and the side surface of the capacitor body 100 (i.e., the first external electrode 150a and the second external electrode 150b extend around the edge between the top surface and the side surface of the capacitor body 100, and extend around the edge between the bottom surface and the side surface of the capacitor body 100).
[0088] The capacitor body 100 may include internal electrodes 120a and 120b and a dielectric layer 110 interposed between the internal electrodes 120a and 120b.
[0089] Each of the first internal electrodes 120a may include a first main portion 130a and a plurality of seventh protruding portions 140a4 extending from the first main portion 130a.
[0090] The first main portion 130a may have a planar shape corresponding to the planar shape of the capacitor body 100. For example, when viewed in a plane, the first main portion 130a may have a regular decagon. The planar shape of the first main portion 130a may be smaller than the planar shape of the capacitor body 100.
[0091] The seventh protruding portions 140a4 may extend from the first main portion 130a. For example, the seventh protruding portions 140a4 may correspondingly extend from the side surface of the first main portion 130a. With this configuration, the seventh protruding portions 140a4 may be provided only on five of the ten side surfaces of the first main portion 130a, asFigure 16 As shown. For example, the seventh protruding portion 140a4 may be provided on one of two adjacent side surfaces of the first main portion 130a and may not be provided on the other of the two adjacent side surfaces of the first main portion 130a. The seventh protruding portion 140a4 may extend to the side surface of the capacitor body 100. Each of the side surfaces of the capacitor body 100 may expose a seventh protruding portion 140a4 (i.e., the seventh protruding portion 140a4 is exposed at the corresponding side surface of the capacitor body 100). On the side surface of the capacitor body 100, the seventh protruding portion 140a4 may be connected to the first external electrode 150a.
[0092] Each of the seventh protruding portions 140a4 may have a linear shape extending from the first main portion 130a. The horizontal width of the seventh protruding portion 140a4 may be smaller than the horizontal width of each side surface of the first main portion 130a that is connected to the seventh protruding portion 140a4. The horizontal width of the seventh protruding portion 140a4 may be smaller than the horizontal width of each side surface of the capacitor body 100. For example, the horizontal width of the seventh protruding portion 140a4 may be about 1 / 3 to about 2 / 3 of the horizontal width of each side surface of the capacitor body 100.
[0093] Each of the second internal electrodes 120b may include a second main portion 130b and a plurality of eighth protruding portions 140b4 extending from the second main portion 130b.
[0094] The second main portion 130b may have a planar shape corresponding to the planar shape of the capacitor body 100. For example, the second main portion 130b may have a regular decagon in a plan view, as Figure 17 shown. The planar shape of the second main portion 130b may be smaller than the planar shape of the capacitor body 100.
[0095] The eighth protruding portions 140b4 may extend from the second main portion 130b. For example, the eighth protruding portions 140b4 may correspondingly extend from the side surfaces of the second main portion 130b. With this configuration, the eighth protruding portions 140b4 may be provided only on five of the ten side surfaces of the second main portion 130b, as Figure 17As shown. For example, the eighth protruding portion 140b4 may be disposed on one of two adjacent side surfaces of the second main portion 130b, and may not be disposed on the other of the two adjacent side surfaces of the second main portion 130b. The eighth protruding portion 140b4 may extend toward the side surface of the capacitor body 100. Each of the side surfaces of the capacitor body 100 may expose one eighth protruding portion 140b4 (i.e., the eighth protruding portion 140b4 is exposed at the corresponding side surface of the capacitor body 100). On the side surface of the capacitor body 100, the eighth protruding portion 140b4 may be connected to the second external electrode 150b.
[0096] Each of the eighth protruding portions 140b4 may have a linear shape extending from the second main portion 130b. The horizontal width of the eighth protruding portion 140b4 may be smaller than the horizontal width of each side surface of the second main portion 130b that is connected to the eighth protruding portion 140b4. The horizontal width of the eighth protruding portion 140b4 may be smaller than the horizontal width of each side surface of the capacitor body 100. For example, the horizontal width of the eighth protruding portion 140b4 may be about 1 / 3 to about 2 / 3 of the horizontal width of each side surface of the capacitor body 100.
[0097] The first internal electrode 120a and the second internal electrode 120b may be stacked in the fifth direction D5 (i.e., the first internal electrode 120a and the second internal electrode 120b may be stacked on top of each other in the fifth direction D5). The first internal electrode 120a may have the same planar shape as the second internal electrode 120b, and the first internal electrode 120a and the second internal electrode 120b may be rotated by an angle of about 36 degrees, as Figure 18 shown. The first main portion 130a of the first internal electrode 120a may vertically overlap with the second main portion 130b of the second internal electrode 120b along the fifth direction D5.
[0098] The first internal electrode 120a and the second internal electrode 120b may be embedded in the dielectric layer 110. The first internal electrode 120a and the second internal electrode 120b may be spaced apart from each other with the dielectric layer 110 therebetween. A metal-insulator-metal (MIM) structured capacitor may be composed of a first internal electrode 120a, a second internal electrode 120b adjacent to the first internal electrode 120a, and a dielectric layer 110 located between the first internal electrode 120a and the second internal electrode 120b.
[0099] The first internal electrode 120a may be connected to the first external electrode 150a, and the second internal electrode 120b may be connected to the second external electrode 150b.
[0100] Figures 1 to 18The embodiments explain that the plan view of the capacitor body 100 has a regular octagonal planar shape, a regular hexagonal planar shape, or a regular decagonal planar shape, but the inventive concept is not limited thereto. When viewed in a plane, the capacitor body 100 may have a regular n-sided polygon, and n may be equal to or greater than 4.
[0101] Figure 19 is a cross-sectional view showing a semiconductor device according to some embodiments of the inventive concept.
[0102] Referring Figure 19 , the electronic device 1100 may include a substrate 200 and a multilayer ceramic capacitor 1000 mounted on the substrate 200. The substrate 200 may have a substrate pad 210 provided on a top surface of the substrate 200. The substrate pad 210 may include a conductive material. The multilayer ceramic capacitor 1000 may be the multilayer ceramic electronic component 1000 or 1001 discussed with reference to Figures 1 to 18 . The multilayer ceramic capacitor 1000 may be mounted on the substrate 200 to allow Figure 1 the bottom surface 100L of the capacitor body 100 of to face the top surface of the substrate 200. The first external electrode 150a and the second external electrode 150b of the multilayer ceramic capacitor 1000 may be correspondingly provided on the substrate pad 210. Solder 220 may be provided on one of the first external electrode 150a and the second external electrode 150b and one of the substrate pads 210. The solder 220 may partially cover an outer side surface of each of the first external electrode 150a and the second external electrode 150b. The solder 220 may include tin (Sn), lead (Pb), silver (Ag), copper (Cu), gold (Au), and any alloy thereof. The solder 220 may further include a conductive polymer.
[0103] Some embodiments of the multilayer ceramic electronic component according to the inventive concept may be provided with at least three first external electrodes and at least three second external electrodes. With this configuration, each of the first internal electrode and the second internal electrode may have three or more terminals, and thus the equivalent series inductance (ESL) may be reduced. The external electrodes may be correspondingly provided on a side surface of the capacitor body. Two adjacent ones of the external electrodes may be spaced apart from each other at a wide interval, and the capacitor body may be located between the external electrodes. Accordingly, there is less interference between the external electrodes. Therefore, a multilayer ceramic electronic component having improved electrical characteristics may be provided.
[0104] In addition, since the capacitor body is provided in the form of a polygon and since the external electrodes are correspondingly provided on the side surface of the capacitor body, the multilayer ceramic electronic component may be configured to have a symmetric shape when viewed in a plane. Accordingly, even if the size of the capacitor body is small, a sufficiently large interval may be provided between the external electrodes, and the multilayer ceramic electronic component may be made compact.
[0105] In addition, the first internal electrode and the second internal electrode may be rotationally displaced only relative to each other and may have substantially the same planar shape. Accordingly, the first internal electrode and the second internal electrode are manufactured by the same process, and the multilayer ceramic electronic component can be manufactured by a simplified process.
[0106] Although the present invention has been described with reference to some embodiments of the inventive concept shown in the drawings, one of ordinary skill in the art should understand that changes in form and detail may be made therein without departing from the inventive concept. Accordingly, the embodiments disclosed above should be regarded as illustrative rather than restrictive.
Claims
1. A multilayer ceramic electronic component, comprising: A capacitor body, which includes a plurality of first internal electrodes and a plurality of second internal electrodes alternately stacked, the capacitor body includes a plurality of first side surfaces opposite to each other in a first direction, a plurality of second side surfaces opposite to each other in a second direction orthogonal to the first direction, a plurality of third side surfaces opposite to each other in a third direction intersecting the first direction and the second direction, and a plurality of fourth side surfaces opposite to each other in a fourth direction orthogonal to the third direction; And A plurality of external electrodes, each of the plurality of external electrodes is located on a corresponding one of the first side surface to the fourth side surface of the capacitor body, Wherein, each of the plurality of first internal electrodes includes: A plurality of first protruding portions, each of the plurality of first protruding portions is exposed at a corresponding one of the plurality of first side surfaces; and A plurality of second protruding portions, each of the plurality of second protruding portions is exposed at a corresponding one of the plurality of second side surfaces, and Wherein, each of the plurality of second internal electrodes includes: A plurality of third protruding portions, each of the plurality of third protruding portions is exposed at a corresponding one of the plurality of third side surfaces; and A plurality of fourth protruding portions, each of the plurality of fourth protruding portions is exposed at a corresponding one of the plurality of fourth side surfaces.
2. The multilayer ceramic electronic component according to claim 1, wherein, Each of the plurality of first internal electrodes further includes a first main portion, Each of the plurality of first protruding portions extends from the first main portion towards one of the plurality of first side surfaces, Each of the plurality of second protruding portions extends from the first main portion towards one of the plurality of second side surfaces, Each of the plurality of second internal electrodes further includes a second main portion, Each of the plurality of third protruding portions extends from the second main portion towards one of the plurality of third side surfaces, and Each of the plurality of fourth protruding portions extends from the second main portion towards one of the plurality of fourth side surfaces.
3. The multilayer ceramic electronic component according to claim 2, wherein, In a plan view, the first main portion and the second main portion have an octagonal shape.
4. The multilayer ceramic electronic component according to claim 3, wherein, The horizontal width of each of the plurality of first protruding portions and each of the plurality of second protruding portions is equal to or less than the horizontal width of the side surface of the first main portion, and The horizontal width of each of the plurality of third protruding portions and each of the plurality of fourth protruding portions is equal to or less than the horizontal width of the side surface of the second main portion.
5. The multilayer ceramic electronic component according to claim 2, wherein, Each of the plurality of first protruding portions and each of the plurality of second protruding portions has a linear shape extending from the first main portion, and Each of the plurality of third protruding portions and each of the plurality of fourth protruding portions has a linear shape extending from the second main portion.
6. The multilayer ceramic electronic component according to claim 1, wherein, each of the plurality of first internal electrodes has a cross-shaped planar shape formed by the plurality of first protruding portions and the plurality of second protruding portions, and each of the plurality of second internal electrodes has a cross-shaped planar shape formed by the plurality of third protruding portions and the plurality of fourth protruding portions.
7. The multilayer ceramic electronic component according to claim 1, wherein, The plurality of external electrodes include: a plurality of first external electrodes extending in a fifth direction on corresponding first side surfaces of the plurality of first side surfaces of the capacitor body; a plurality of second external electrodes extending in the fifth direction on corresponding second side surfaces of the plurality of second side surfaces of the capacitor body; a plurality of third external electrodes extending in the fifth direction on corresponding third side surfaces of the plurality of third side surfaces of the capacitor body; and a plurality of fourth external electrodes extending in the fifth direction on corresponding fourth side surfaces of the plurality of fourth side surfaces of the capacitor body.
8. The multilayer ceramic electronic component according to claim 7, wherein, the plurality of first protruding portions of the plurality of first internal electrodes are connected to the plurality of first external electrodes, the plurality of second protruding portions of the plurality of first internal electrodes are connected to the plurality of second external electrodes, the plurality of third protruding portions of the plurality of second internal electrodes are connected to the plurality of third external electrodes, and the plurality of fourth protruding portions of the plurality of second internal electrodes are connected to the plurality of fourth external electrodes.
9. The multilayer ceramic electronic component according to claim 1, wherein, the capacitor body has an octagon in a plan view, and the plurality of first side surfaces, the plurality of second side surfaces, the plurality of third side surfaces, and the plurality of fourth side surfaces have the same horizontal width.
10. The multilayer ceramic electronic component according to claim 1, wherein, The horizontal width of each of the plurality of first protruding portions, each of the plurality of second protruding portions, each of the plurality of third protruding portions, and each of the plurality of fourth protruding portions is 1 / 3 to 2 / 3 of the horizontal width of each of the plurality of first side surfaces, each of the plurality of second side surfaces, each of the plurality of third side surfaces, and each of the plurality of fourth side surfaces.
11. The multilayer ceramic electronic component according to claim 1, wherein, The third direction forms an angle of 45 degrees with the first direction and the second direction.
12. The multilayer ceramic electronic component according to claim 1, wherein, the capacitor body further includes a plurality of dielectric layers between the plurality of first internal electrodes and the plurality of second internal electrodes, and the plurality of dielectric layers fill the space between the plurality of first protruding portions and the plurality of second protruding portions and the space between the plurality of third protruding portions and the plurality of fourth protruding portions.
13. The multilayer ceramic electronic component according to claim 1, wherein, the plurality of first internal electrodes and the plurality of second internal electrodes have the same planar shape, and The plurality of first internal electrodes and the plurality of second internal electrodes are displaced relative to each other by an angle of 45 degrees in a rotational manner.
14. A multilayer ceramic electronic component, comprising: A capacitor body, which includes at least three first side surfaces and a plurality of second side surfaces having the same number as the at least three first side surfaces, wherein each of the plurality of second side surfaces is between the at least three first side surfaces and connects two adjacent ones of the at least three first side surfaces; A plurality of first external electrodes, wherein each of the plurality of first external electrodes is located on a corresponding one of the at least three first side surfaces of the capacitor body, and wherein each of the plurality of first external electrodes extends in the longitudinal direction of the capacitor body; and A plurality of second external electrodes, wherein each of the plurality of second external electrodes is located on a corresponding one of the plurality of second side surfaces of the capacitor body, and wherein each of the plurality of second external electrodes extends in the longitudinal direction, wherein the capacitor body includes: A plurality of first internal electrodes and a plurality of second internal electrodes alternately stacked in the longitudinal direction; and A plurality of dielectric layers between the plurality of first internal electrodes and the plurality of second internal electrodes, wherein each of the plurality of first internal electrodes includes: A first main portion having a polygonal shape in a plan view; and A plurality of first extending portions extending from the first main portion toward the plurality of first external electrodes, and wherein each of the plurality of second internal electrodes includes: A second main portion having a polygonal shape in a plan view; and A plurality of second extending portions extending from the second main portion toward the plurality of second external electrodes.
15. The multilayer ceramic electronic component according to claim 14, wherein, The capacitor body includes four first side surfaces and four second side surfaces, and The capacitor body has an octagonal shape in a plan view.
16. The multilayer ceramic electronic component according to claim 15, wherein, Each of the plurality of first main portions and the plurality of second main portions has an octagonal planar shape in a plan view.
17. The multilayer ceramic electronic component according to claim 15, wherein, The four first side surfaces and the four second side surfaces have the same horizontal width.
18. An electronic device, comprising: A substrate; And A multilayer ceramic capacitor mounted on the substrate, wherein the multilayer ceramic capacitor includes: A capacitor body, which includes a plurality of first internal electrodes and a plurality of second internal electrodes stacked in the longitudinal direction up to the top surface of the substrate, wherein the capacitor body has an octagonal planar shape in which a plurality of first side surfaces and a plurality of second side surfaces are alternately arranged; A plurality of first external electrodes, each of the plurality of first external electrodes is located on a corresponding one of the plurality of first side surfaces of the capacitor body, and the plurality of first external electrodes extend in the longitudinal direction; and A plurality of second external electrodes, each of the plurality of second external electrodes being located on a corresponding one of the plurality of second side surfaces of the capacitor body, the plurality of second external electrodes extending in the longitudinal direction, wherein each of the plurality of first internal electrodes and each of the plurality of second internal electrodes includes: a main portion; and a plurality of protruding portions extending from the main portion in different directions, wherein the plurality of first internal electrodes and the plurality of second internal electrodes have the same planar shape, and wherein the plurality of first internal electrodes and the plurality of second internal electrodes are rotationally displaced from each other by an angle of 45 degrees.
19. The electronic device according to claim 18, wherein the plurality of protruding portions of each of the plurality of first internal electrodes extend from the main portion toward the plurality of first side surfaces and are connected to the plurality of first external electrodes, and the plurality of protruding portions of each of the plurality of second internal electrodes extend from the main portion toward the plurality of second side surfaces and are connected to the plurality of second external electrodes.
20. The electronic device according to claim 19, wherein, The main portion of each of the plurality of first internal electrodes and each of the plurality of second internal electrodes has an octagonal planar shape.
Citation Information
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Method for machining a tooth flank area of a workpiece tooth array, a chamfering tool, a control program having control commands for performing the method, and a gear cutting machine
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