Multilayer electronic components

Abstract

To improve the mounting rate and mounting height of multilayer electronic components. [Solution] The stacked electronic component includes a dielectric layer and an internal electrode layer, a body 110 including surfaces facing each other with respect to a first direction Z to a third direction perpendicular to each other, and a plurality of external electrodes 131 to 134 arranged on the third direction surface and the second direction X surface of the body, wherein at least a part of the body includes a shape that is recessed inward, and the length from the body of the region of the external electrode arranged on the third direction surface of the body that is arranged on the second direction surface of the body that is arranged on the body that is arranged on the second direction surface of the body that is greater from the body of the region of the external electrode arranged on the body that is arranged on the body that is arranged on the second direction surface of the body that is arranged on second direction surface of the body, and the maximum length is the same or less.

Description

[Technical Field]

[0001] This invention relates to a stacked electronic component. [Background technology]

[0002] A multilayer ceramic capacitor (MLCC), a type of multilayer electronic component, is a chip-type capacitor that is mounted on the printed circuit boards of various electronic products such as liquid crystal displays (LCDs), plasma display panels (PDPs), computers, smartphones, and mobile phones, and plays the role of charging or discharging electricity.

[0003] Such multilayer ceramic capacitors can be used as components in various electronic devices due to their advantages of being small, yet guaranteeing high capacitance, and being easy to implement. As various electronic devices such as computers and mobile devices become smaller and more powerful, the demand for smaller and higher-capacitance multilayer ceramic capacitors is increasing.

[0004] On the other hand, the body of a multilayer electronic component can contain ceramic material, and as a result, the ceramic particles may shrink during the firing process, causing steps to occur when the multilayer electronic component with external electrodes is mounted onto a substrate. Alternatively, steps may occur in the body due to the repeated stacking of internal electrodes (layers) of different shapes, which can also cause steps when the multilayer electronic component with external electrodes is mounted onto a substrate. Such steps during mounting can lead to mounting defects and more easily induce component defects, so minimizing steps during mounting and improving the flatness of the mounted multilayer electronic component is one of the important challenges. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2015-019083 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] One of the problems that this invention aims to solve is to provide a stacked electronic component with improved mounting efficiency.

[0007] One of the problems that this invention aims to solve is to provide a stacked electronic component with improved mounting steps.

[0008] However, some of the problems that the present invention aims to solve are not limited to those described above and can be more easily understood in the process of describing specific embodiments of the present invention. [Means for solving the problem]

[0009] A stacked electronic component according to one embodiment of the present invention includes a body comprising a dielectric layer and first internal electrode layers and second internal electrode layers alternately arranged in a first direction with respect to the dielectric layer, and a body comprising first and second faces facing each other in the first direction, third and fourth faces connected to the first and second faces and facing each other in a second direction, and fifth and sixth faces connected to the first, second, third and fourth faces and facing each other in a third direction; first external electrodes and second external electrodes arranged on the third and fourth faces respectively and extending onto a part of the first and second faces; and third external electrodes and fourth external electrodes arranged on the fifth and sixth faces respectively and extending onto a part of the first and second faces, wherein when the stacked electronic component is observed from the third direction... The main body is configured such that the length in the first direction at both ends of the second direction is greater than the length in the first direction at the center of the second direction, the maximum length in the first direction of the region of the third and fourth external electrodes that extends onto a part of the first surface is greater than the maximum length in the first direction of the region of the first and second external electrodes that extends onto a part of the first surface, the maximum length in the first direction of the region of the third and fourth external electrodes that extends onto a part of the second surface is greater than the maximum length in the first direction of the region of the first and second external electrodes that extends onto a part of the second surface, and the ends of the third and fourth external electrodes in the first direction do not exceed the ends of the first and second external electrodes in the first direction.

[0010] A stacked electronic component according to another embodiment of the present invention includes a dielectric layer and first and second internal electrode layers alternately arranged in a first direction with respect to the dielectric layer, and comprises a body including first and second faces facing each other in the first direction, third and fourth faces connected to the first and second faces and facing each other in a second direction, and fifth and sixth faces connected to the first, second, third and fourth faces and facing each other in a third direction; first and second external electrodes arranged on the third and fourth faces respectively and extending to a part of the first and second faces, and third and fourth external electrodes arranged on the fifth and sixth faces respectively and extending to a part of the first and second faces, wherein at least one of the ends of the stacked electronic component in the third direction is connected to the body and the first external electrode, second external electrode, third external electrode When the cross-sections in the first and second directions are observed to include the pole and the fourth external electrode, the main body is such that the length in the first direction at both ends of the second direction is greater than the length in the first direction at the center of the second direction, the maximum length in the first direction of the region of the third and fourth external electrodes that extends onto a part of the first surface is greater than the maximum length in the first direction of the region of the first and second external electrodes that extends onto a part of the first surface, the maximum length in the first direction of the region of the third and fourth external electrodes that extends onto a part of the second surface is greater than the maximum length in the first direction of the region of the first and second external electrodes that extends onto a part of the second surface, and the ends of the third and fourth external electrodes in the first direction do not exceed the ends of the first and second external electrodes in the first direction. [Effects of the Invention]

[0011] One of the several effects of the present invention is to improve the mounting rate of stacked electronic components.

[0012] One of the several effects of the present invention is to improve the mounting height of multilayer electronic components.

[0013] However, the diverse yet beneficial advantages and effects of the present invention are not limited to the above-described content and can be more easily understood during the process of explaining the specific embodiments of the present invention.

Brief Description of the Drawings

[0014] [Figure 1] Schematically shows a perspective view of a multilayer electronic component according to an embodiment of the present invention. [Figure 2] Schematically shows a side view of FIG. 1 as viewed from the Y direction. [Figure 3a] Schematically shows an internal electrode layer of an embodiment of the present invention. [Figure 3b] Schematically shows an internal electrode layer of an embodiment of the present invention. [Figure 4] Schematically shows a cross-sectional view taken along the line I-I' of FIG. 1. [Figure 5] Schematically shows a cross-sectional view taken along the line II-II' of FIG. 1. [Figure 6] Schematically shows a perspective view of a multilayer electronic component according to another embodiment of the present invention. [Figure 7] Schematically shows a side view of FIG. 6 as viewed from the Y direction. [Figure 8] Schematically shows a cross-sectional view taken along the line III-III' of FIG. 6. [Figure 9]

Modes for Carrying Out the Invention

[0015] [[ID=G4]] ​​​​Embodiments of the present invention will be described below with reference to specific embodiments and accompanying drawings. However, 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. Furthermore, embodiments of the present invention are provided to give a more complete explanation of the present invention to a person of the ordinary skill. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation, and elements indicated by the same reference numerals in the drawings are the same elements.

[0016] Furthermore, in order to clearly illustrate the present invention in the drawings, parts unrelated to the explanation have been omitted, and the size and / or length of each component shown in the drawings are shown arbitrarily for the convenience of explanation; therefore, the present invention is not necessarily limited to what is shown. Components with the same function within the scope of the same concept are described using the same reference numerals. Moreover, throughout the specification, when a part "includes" a component, this does not exclude other components unless otherwise stated, but rather means that it may further include other components.

[0017] In drawings, the Z direction can be defined as the first direction, the X direction as the second direction, and the Y direction as the third direction.

[0018] Multilayer electronic components Figure 1 schematically shows a perspective view of a stacked electronic component according to one embodiment of the present invention, Figure 2 schematically shows a side view of Figure 1 viewed from the Y direction, Figures 3a and 3b schematically show an internal electrode layer according to one embodiment of the present invention, Figure 4 schematically shows a cross-sectional view along the line I-I' in Figure 1, Figure 5 schematically shows a cross-sectional view along the line II-II' in Figure 1, Figure 6 schematically shows a perspective view of a stacked electronic component according to another embodiment of the present invention, Figure 7 schematically shows a side view of Figure 6 viewed from the Y direction, Figure 8 schematically shows a cross-sectional view along the line III-III' in Figure 6, Figure 9 schematically shows a cross-sectional view along the line IV-IV' in Figure 6, and Figure 10 schematically shows a cross-sectional view along the line V-V' in Figure 6.

[0019] Hereinafter, with reference to Figures 1 to 10, various multilayer electronic components according to one embodiment of the present invention will be described in detail. However, although a multilayer ceramic capacitor will be described as an example of a multilayer electronic component, the present invention can also be applied to various electronic products that utilize dielectric compositions, such as inductors, piezoelectric elements, varistors, or thermistors.

[0020] A stacked electronic component 100 according to one embodiment of the present invention includes a dielectric layer 111 and first internal electrode layers 121 and second internal electrode layers 122 that are alternately arranged in a first direction with respect to the dielectric layer 111, and a first surface 1 and a second surface 2 that face each other in the first direction, a third surface 3 and a fourth surface 4 connected to the first surface 1 and the second surface 2 and facing each other in a second direction, and a fifth surface 5 connected to the first surface 1, the second surface 2, the third surface 3 and the fourth surface 4 and facing each other in a third direction. The stacked electronic component 100 may include a main body 110 including the third face 3 and the fourth face 4, a first external electrode 131 and a second external electrode 132 arranged on the third face 3 and the fourth face 4 respectively and extending to a part of the first face 1 and the second face 2, and a third external electrode 133 and a fourth external electrode 134 arranged on the fifth face 5 and the sixth face 6 respectively and extending to a part of the first face 1 and the second face 2, and when the stacked electronic component 100 is observed from the third direction, the main body 110 The length T1 in the first direction at both ends of the second direction is greater than the length T2 in the first direction at the central part of the main body 110 in the second direction; the maximum length in the first direction of the region of the third external electrode 133 and fourth external electrode 134 that extends onto a part of the first surface 1 is greater than the maximum length in the first direction of the region of the first external electrode 131 and second external electrode 132 that extends onto a part of the first surface 1; the maximum length ET2 in the first direction of the region of the third external electrode 133 and fourth external electrode 134 that extends onto a part of the second surface 2 is greater than the maximum length ET1 in the first direction of the region of the first external electrode 131 and second external electrode 132 that extends onto a part of the second surface 2; and the ELT2 at both ends of the third external electrode 133 and fourth external electrode 134 in the first direction do not exceed the ELT1 at both ends of the first external electrode 131 and second external electrode 132 in the first direction.

[0021] Another embodiment of the present invention, a stacked electronic component 200 includes a dielectric layer 211 and first internal electrode layers 221 and second internal electrode layers 222 arranged alternately in a first direction with respect to the dielectric layer 211, and a body 210 including first faces 1 and second faces 2 facing each other in the first direction, third faces 3 and fourth faces 4 connected to the first faces 1 and second faces 2 and facing each other in a second direction, and fifth faces 5 and sixth faces 6 connected to the first faces 1, second faces 2, third faces 3 and fourth faces 4 and facing each other in a third direction, and the third face 3 and The stacked electronic component 200 may include a first external electrode 231 and a second external electrode 232, which are arranged on the fourth surface 4 and extend to parts of the first surface 1 and the second surface 2, respectively, and a third external electrode 233 and a fourth external electrode 233, 234, which are arranged on the fifth surface 5 and the sixth surface 6 and extend to parts of the first surface 1 and the second surface 2, respectively, and at least one of the ends of the stacked electronic component 200 in the third direction may include the main body 210 and the first external electrode 231, the second external electrode 232, the third external electrode 233 and the fourth external electrode 234. When the cross-sections in the first and second directions are observed to include the part electrode 234, the length T1 in the first direction at both ends of the second direction of the main body 201 is greater than the length T2 in the first direction at the center of the second direction, and the maximum length in the first direction of the region of the third external electrode 233 and fourth external electrode 234 that extends onto a part of the first surface 1 is greater than the length in the first direction of the region of the first external electrode 231 and second external electrode 232 that extends onto a part of the first surface 1. The maximum length ET2 in the first direction of the region of the third external electrode 233 and fourth external electrode 234 that is extended onto a part of the second surface 2 is greater than the maximum length ET1 in the first direction of the region of the first external electrode 231 and second external electrode 232 that is extended onto a part of the second surface 2, and the ELT2 at both ends of the third external electrode 233 and fourth external electrode 234 in the first direction does not exceed the ELT1 at both ends of the first external electrode 231 and second external electrode 232 in the first direction.

[0022] The following describes in more detail a stacked electronic component 100 according to one embodiment of the present invention. However, unless otherwise inconsistent, it should be obvious to an ordinary person that the description of the stacked electronic component 100 of one embodiment can be similarly applied to a stacked electronic component 200 of another embodiment of the present invention.

[0023] The main body 110 may have a dielectric layer 111 and internal electrode layers 121 and 122 stacked alternately.

[0024] More specifically, the main body 110 may include a capacitance forming section Ac which is disposed inside the main body 110 and includes a first internal electrode layer 121 and a second internal electrode layer 122 that are alternately arranged facing each other with a dielectric layer 111 in between, thereby forming a capacitance.

[0025] There are no particular restrictions on the specific shape of the main body 110, but as shown in the figure, the main body 110 can be hexahedral in shape or a similar shape overall.

[0026] The main body 110 may have a first surface 1 and a second surface 2 facing each other in a first direction, a third surface 3 and a fourth surface 4 connected to the first surface 1 and the second surface 2 and facing each other in a second direction, a fifth surface 5 and a sixth surface 6 connected to the first surface 1, the second surface 2, the third surface 3 and the fourth surface 4 and facing each other in a third direction.

[0027] Due to the shrinkage of ceramic particles contained in the main body 110 during the firing process or the step difference of the stacked internal electrode layers 121 and 122, the main body 110 is not a perfectly straight hexahedron shape, but any two faces facing each other based substantially on a hexahedron shape may include at least a portion of a shape that is recessed inward towards the main body 110.

[0028] More specifically, for example, at least one of the first surface 1 and the second surface 2, which face each other in the first direction, may include at least a portion of a shape that is recessed inward toward the body 110, and preferably, the first surface 1 and the second surface 2 may include at least a portion of a shape that is recessed inward toward the body 110.

[0029] That is, in the present invention, the first surface 1 and the second surface 2 facing each other are not limited to being substantially parallel.

[0030] And the plurality of dielectric layers 111 forming the main body 110 are in a fired state, and the boundaries between adjacent dielectric layers 111 can be integrated so that they are difficult to confirm without using a scanning electron microscope (SEM).

[0031] The raw material for forming the dielectric layer 111 is not limited as long as sufficient capacitance can be obtained. Generally, perovskite (ABO3)-based substances can be used. For example, barium titanate-based substances, lead composite perovskite-based substances, or strontium titanate-based substances can be used. The barium titanate-based substance can contain BaTiO3-based ceramic particles. Examples of the ceramic particles include BaTiO3, (Ba , 1-y Ca x )TiO3 (0 < x < 1), Ba(Ti 1-y Ca y )O3 (0 < y < 1), (Ba 1-x Ca x )(Ti 1-y Zr y )O3 (0 < x < 1, 0 < y < 1) or Ba(Ti 1-y Zr y )O3 (0 < y < 1), etc.

[0032] In addition, various ceramic additives, organic solvents, binders, dispersants, etc. can be added to the particles such as barium titanate (BaTiO3) for forming the dielectric layer 111 according to the object of the present invention. <00​​​​

[0034] Furthermore, since the first and second dielectric layers can be formed using a dielectric material such as barium titanate (BaTiO3), they can contain a dielectric microstructure after firing. The dielectric microstructure includes multiple crystal grains, crystal grain boundaries located between adjacent crystal grains, and triple points located at points where three or more crystal grain boundaries meet, and can contain multiple crystal grains, crystal grain boundaries, and triple points.

[0035] The length td of the dielectric layer 111 in the first direction does not need to be particularly limited.

[0036] However, in order to more easily achieve miniaturization and high capacitance of the multilayer electronic component, the length td of the dielectric layer 111 in the first direction may be 3.0 μm or less, 2.0 μm or less, 1.0 μm or less, or 0.8 μm or less, preferably 0.6 μm or less, and preferably 0.4 μm or less.

[0037] Here, the length td of the dielectric layer 111 in the first direction can mean the length td of the dielectric layer 111 in the first direction, which is positioned between the first internal electrode layer and the second internal electrode layers 121 and 122.

[0038] In this case, the length td of the dielectric layer 111 in the first direction may be a concept that includes the length td of at least one of the multiple dielectric layers 111 in the first direction, or it may be a concept that includes the length td of each of the dielectric layers 111 in the first direction.

[0039] Furthermore, the length td of the dielectric layer 111 in the first direction can mean the average length td of one dielectric layer 111 in the first direction, the average length td of each of multiple dielectric layers 111 in the first direction, or the average length td of multiple dielectric layers 111 in the first direction.

[0040] The average length td of the dielectric layer 111 in the first direction can be measured by scanning the cross-section of the main body 110 in the first and second directions with a scanning electron microscope (SEM) at 10,000x magnification. More specifically, the average length td of a single dielectric layer 111 in the first direction can be calculated as the average value obtained by measuring the length in the first direction at five equally spaced points in the second direction of the dielectric layer 111 in the scanned image. These five equally spaced points can be specified in the capacitance forming section Ac. Furthermore, by extending this measurement of average values ​​to three dielectric layers 111, the average length td of the first direction of multiple dielectric layers 111 can be further generalized.

[0041] The internal electrode layers 121 and 122 may be stacked alternately with the dielectric layer 111.

[0042] The internal electrode layers 121 and 122 may include a first internal electrode layer 121 and a second internal electrode layer 122, and the first internal electrode layer 121 and the second internal electrode layer 122 may be arranged alternately with respect to the dielectric layer 111 constituting the main body 110 in between in the first direction. In the following, unless otherwise inconsistent, the description of the internal electrode layers 121 and 122 may correspond to the description of the first internal electrode layer 121 and the second internal electrode layer 122, respectively.

[0043] The first internal electrode layer 121 can be connected to the third external electrode 133 and the fourth external electrode 134, and the second internal electrode layer 122 can be connected to the first external electrode 131 and the second external electrode 132.

[0044] More specifically, the first internal electrode layer 121 may include a first internal electrode 121a exposed on the fifth surface 5 and the sixth surface 6 and connected to the third external electrode 133 and the fourth external electrode 134, and a first dummy electrode 121b positioned apart from the first internal electrode 121a, and the second internal electrode layer 122 may include a second internal electrode 122a exposed on the third surface 3 and the fourth surface 4 and connected to the first external electrode 131 and the second external electrode 132.

[0045] The first internal electrode layer 121 can be described in more detail as follows.

[0046] The first internal electrode 121a can be positioned away from the third surface 3 and the fourth surface 4, exposed to the fifth surface 5 and the sixth surface 6, and connected to the third external electrode 133 and the fourth external electrode 134, while the first dummy electrode 121b can be positioned away from the first internal electrode 121a.

[0047] The first internal electrode 121a may include a first main portion 121a-0 that forms a capacitance, and first lead portions 121a-1 and 121a-2 that are exposed on the fifth surface 5 and the sixth surface 6 without forming a capacitance. Specifically, the first lead portions 121a-1 and 121a-2 may include a first-first lead portion 121a-1 exposed on the fifth surface 5, and a first-second lead portion 121a-2 exposed on the sixth surface 6. In the following, unless otherwise inconsistent, the description of the first lead portions 121a-1 and 121a-2 may correspond to the description of the first-first lead portion 121a-1 and the first-second lead portion 121a-2, respectively.

[0048] More specifically, the first main section 121a-0 may be a rectangular shape with substantially constant dimensions in the second direction and substantially constant dimensions in the third direction, and the first lead sections 121a-1 and 121a-2 may be rectangular shapes with substantially constant dimensions in the second direction and substantially constant dimensions in the third direction. In this case, the dimensions of the first lead sections 121a-1 and 121a-2 in the second direction or the third direction may be smaller than the dimensions of the main section 121a-0 in the second direction or the third direction, respectively.

[0049] In the present invention, the statement that the size in the second direction is substantially constant means that the difference (absolute value) between the average size in the second direction and the size in the second direction is 10% or less, and this can be similarly applied to the statement that the size in the third direction is substantially constant.

[0050] Furthermore, the first lead portions 121a-1 and 121a-2 do not form capacitance and do not need to overlap with the second internal electrode 122a (described later) in the first direction. They are exposed on the fifth and sixth surfaces 5 and 6 of the main body, but may be arranged to be covered by the third and fourth external electrodes 133 and 134 (described later) and not exposed to the outside. In other words, the first-first lead portion 121a-1 is exposed on the fifth surface 5, but may be arranged to be completely covered by the third external electrode 133 and not exposed to the outside, and the first-second lead portion 121a-2 is exposed on the sixth surface 6, but may be arranged to be completely covered by the fourth external electrode 134 and not exposed to the outside.

[0051] The first dummy electrode 121b does not need to form a capacitance, and at least a portion of the first dummy electrode 121b can overlap with the second internal electrode 122a (described later) in the first direction, thereby improving steps that may occur due to repeated lamination or improving bending strength.

[0052] More specifically, the first dummy electrode 121b may include a first-first dummy electrode 121b-1 positioned between the first internal electrode 121a and the third surface 3, and a first-second dummy electrode 121b-2 positioned between the first internal electrode 121a and the fourth surface 4. In the drawings, the first-first dummy electrode 121b-1 is shown exposed on the third surface 3 but not on the fifth surface 5 and the sixth surface 6, and the first-second dummy electrode 121b-2 is shown exposed on the fourth surface 4 but not on the fifth surface 5 and the sixth surface 6, but it is not limited to this. More specifically, the first-first dummy electrode 121b-1 only needs to be positioned between the third surface 3 and the first internal electrode 121a without being exposed on the third surface 3, and may be exposed on at least one of the fifth surface 5 and the sixth surface 6. Similarly, the first-to-second dummy electrodes 121b-2 may be positioned between the fourth surface 4 and the first internal electrode 121a without being exposed to the fourth surface 4, and may be exposed to at least one of the fifth surface 5 and the sixth surface 6.

[0053] Furthermore, if the first dummy electrode 121b is exposed on at least one surface of the main body 110, it may be arranged to be covered by the first external electrode 131 and the second external electrode 132. In other words, the 1-1 dummy electrode 121b-1 may be exposed on at least a portion of at least one of the third surface 3, fifth surface 5, and sixth surface 6, but may be arranged to be completely covered by the first external electrode 131 and not exposed to the outside, and the 1-2 dummy electrode 121b-2 may be exposed on at least a portion of at least one of the fourth surface 4, fifth surface 5, and sixth surface 6, but may be arranged to be completely covered by the second external electrode 132 and not exposed to the outside.

[0054] The second internal electrode layer 122 can be described in more detail as follows.

[0055] The second internal electrode layer 122 may include a second internal electrode 122a that is exposed on the third surface 3 and the fourth surface 4 and connected to the first external electrode 131 and the second external electrode 132, and preferably consists of the second internal electrode 122a. In other words, it is preferable that the second internal electrode layer 122 does not contain any other electrodes or metallic materials other than the second internal electrode 122a.

[0056] The second internal electrode 122a can be positioned at a distance from the fifth surface 5 and the sixth surface 6. In this case, the second internal electrode 122a may include a second main portion 122a-0 that forms a capacitance, and second lead portions 122a-1 and 122a-2 that do not form a capacitance and are exposed to the third surface 3 and the fourth surface 4, and connected to the first external electrode 131 and the second external electrode 132. Specifically, the second lead portions 122a-1 and 122a-2 may include a second-first lead portion 122a-1 that is exposed to the fifth surface 5 and connected to the first external electrode 131, and a second-second lead portion 122a-2 that is exposed to the sixth surface 6 and connected to the second external electrode 132. In the following, unless otherwise inconsistent, the descriptions of the second lead portions 122a-1 and 122a-2 may correspond to the descriptions of the second-first lead portion 122a-1 and the second-second lead portion 122a-2, respectively.

[0057] More specifically, the second internal electrode 122a may be a rectangular shape with substantially constant size in the second direction and substantially constant size in the third direction. That is, the second main portion 122a-0 may be a rectangular shape with substantially constant size in the second direction and substantially constant size in the third direction, the second lead portions 122a-1 and 122a-2 may be rectangular shapes with substantially constant size in the second direction and substantially constant size in the third direction, and the size of the second lead portions 122a-1 and 122a-2 in the third direction and the size of the main portion 122a-0 in the third direction may be substantially constant.

[0058] The first internal electrode layer 121 and the second internal electrode layer 122 can be electrically isolated from each other by the dielectric layer 111 placed in between them.

[0059] On the other hand, the main body 110 can be formed by alternately stacking a first ceramic green sheet printed with a paste for the first internal electrode layer, which will become the first internal electrode layer 121, and a second ceramic green sheet printed with a paste for the second internal electrode layer, which will become the second internal electrode layer 122, and then firing them.

[0060] The materials forming the internal electrode layers 121 and 122 are not particularly limited, and any material with excellent electrical conductivity can be used. For example, the internal electrode layers 121 and 122 may include one or more of nickel (Ni), copper (Cu), palladium (Pd), silver (Ag), gold (Au), platinum (Pt), tin (Sn), tungsten (W), titanium (Ti), and alloys thereof.

[0061] Furthermore, the internal electrode layers 121 and 122 can be formed by printing a conductive paste for internal electrode layers containing one or more of the following on a ceramic green sheet: nickel (Ni), copper (Cu), palladium (Pd), silver (Ag), gold (Au), platinum (Pt), tin (Sn), tungsten (W), titanium (Ti), and alloys thereof. While screen printing or gravure printing can be used as printing methods for the conductive paste for internal electrode layers, the present invention is not limited thereto.

[0062] On the other hand, the length te of the internal electrode layers 121 and 122 in the first direction does not need to be particularly limited, and in the following, the explanation of the length te of the internal electrode layers 121 and 122 in the first direction can mean the length te of the first internal electrode layer 121 and the second internal electrode layer 122, respectively.

[0063] To achieve miniaturization and high capacitance of the stacked electronic component 100, the length te of the internal electrode layers 121 and 122 in the first direction may be 1.0 μm or less. To more easily achieve ultra-miniaturization and high capacitance, the length te of the internal electrode layers 121 and 122 in the first direction may be 0.8 μm or less or 0.6 μm or less, and more preferably 0.4 μm or less.

[0064] In this case, the length te of the internal electrode layers 121 and 122 in the first direction may be a concept that includes the length te of at least one of the multiple internal electrode layers 121 and 122 in the first direction, or it may be a concept that includes the length te of all internal electrode layers 121 and 122 in the first direction.

[0065] In this case, the length te of the internal electrode layers 121 and 122 in the first direction may be a concept that includes the length te of at least one of the multiple internal electrode layers 121 and 122 in the first direction, or it may be a concept that includes the length te of each of the internal electrode layers 121 and 122 in the first direction.

[0066] Furthermore, the length te of the internal electrode layers 121 and 122 in the first direction can mean the average length te of one of the internal electrode layers 121 and 122 in the first direction, or the average length te of each of the multiple internal electrode layers 121 and 122 in the first direction, or the average length te of the multiple internal electrode layers 121 and 122 in the first direction.

[0067] The average length te of the internal electrode layers 121 and 122 in the first direction can be measured by scanning the cross-section of the main body 110 in the first and second directions with a scanning electron microscope (SEM) at 10,000x magnification. More specifically, the average length te of one internal electrode layer 121 or 122 can be calculated as the average value obtained by measuring the length in the first direction at five equally spaced points in the second direction of one internal electrode layer in the scanned image. These five equally spaced points can be specified in the capacitance forming section Ac. Furthermore, by extending this measurement of average values ​​to three internal electrode layers 121 and 122, the average length te of multiple internal electrode layers 121 and 122 in the first direction can be further generalized.

[0068] On the other hand, the main body 110 may include cover portions 112 and 113 that are positioned on both end surfaces (end-surfaces) of the capacity forming portion Ac in the first direction.

[0069] Specifically, it may include a first cover portion 112 positioned on one side of the volume-forming portion Ac in a first direction, and a second cover portion 113 positioned on the other side of the volume-forming portion Ac in a second direction. More specifically, for example, it may include a first cover portion 112 positioned at the bottom of the volume-forming portion Ac in a first direction, and a second cover portion 113 positioned at the top of the volume-forming portion Ac in a first direction.

[0070] The first cover portion 112 and the second cover portion 113 can be formed by arranging or stacking a single second dielectric layer or two or more second dielectric layers in a first direction on the upper and lower surfaces of the capacitance forming portion Ac, respectively, and can essentially serve to prevent damage to the internal electrode layers 121 and 122 due to physical or chemical stress.

[0071] The first cover portion 112 and the second cover portion 113 do not include the internal electrode layers 121 and 122, and may contain the same dielectric material as the first dielectric layer 111 of the capacitance forming portion Ac, or even be identical to the first dielectric layer 111. That is, the first cover portion 112 and the second cover portion 113 can contain a dielectric material, for example, a barium titanate (BaTiO3) based dielectric material.

[0072] The length tc of the cover portions 112 and 113 in the first direction is not particularly limited, and in the following description of the length tc of the cover portions 112 and 113 in the first direction, it may mean the respective lengths tc of the first cover portion 112 and the second cover portion 113 in the first direction.

[0073] However, in order to more easily achieve miniaturization and high capacity of the stacked electronic component 100, the length tc of the cover portion 112, 113 in the first direction may be 100 μm or less or 50 μm or less, preferably 30 μm or less, and more preferably 20 μm or less for ultra-small products. Furthermore, the length tc of the cover portion 112, 113 in the first direction may be 20 μm or more, 15 μm or more, 10 μm or more, or 5 μm or more.

[0074] In one embodiment of the present invention, at least one of the first cover portion 112 and the second cover portion 113 may include at least a portion of a shape that is recessed inward toward the main body 110, and preferably, the first cover portion 112 and the second cover portion 113 may include at least a portion of a shape that is recessed inward toward the main body 110. In this case, the recessed shape may be formed on the outer surface of the first cover portion 112 and the second cover portion 113, and the outer surface here may mean the first surface 1 and the second surface 2.

[0075] The length tc of the cover portions 112 and 113 in the first direction can mean the respective lengths tc of the first cover portion 112 and the second cover portion 113 in the first direction.

[0076] In this case, the length tc in the first direction of the cover portions 112 and 113 does not necessarily have to be substantially constant across the entire region. For example, it can mean that the length tc in the first direction across the entire region is 100 μm or less, based on the cross-sections of the cover portions 112 and 113 in the first and second directions, but it does not mean that it is substantially constant. To give another example, it can mean that the length tc in the first direction across the entire region, more specifically the length tc' in the first direction at the center of the third direction of the cover portions 212 and 213, is 100 μm or less, based on the cross-sections of the cover portions 212 and 113 in the first and third directions, and that the length tc'' in the first direction at both ends of the third direction of the cover portions 212 and 213 is also 100 μm or less.

[0077] Furthermore, the cover portions 112 and 113 may include at least a portion of a region in which the length in the first direction decreases as you move from both ends in the second direction toward the center of the second direction.

[0078] The length tc of the cover portions 112 and 113 in the first direction can be measured by scanning the cross-section of the main body 110 in the first and second directions with a scanning electron microscope (SEM) at 10,000x magnification. More specifically, it can be determined by moving in the second direction and measuring the length in the first direction in the scanned image of one cover portion.

[0079] On the other hand, the stacked electronic component 100 may include side margin regions 114' and 115', which are the third-direction edge regions of the internal electrode layers 121 and 122.

[0080] More specifically, the side margin regions 114' and 115' may include a first side margin region 114' located between the internal electrode layers 121 and 122 and the fifth surface 5, and a second side margin region 115' located between the internal electrode layers 121 and 122 and the sixth surface 6.

[0081] As shown in the figure, the side margin regions 114' and 115' can refer to the regions between the interface between the first internal electrode layer 121 and the second internal electrode layer 122 in the third direction and the interface surface of the main body 110, with reference to the cross-sections of the main body 110 in the first and third directions.

[0082] The side margin regions 114' and 115' can be interpreted as the ceramic green sheet regions excluding the internal electrode layers 121 and 122 when the paste for the internal electrode layer is applied to the ceramic green sheet applied to the volume-forming portion Ac, excluding the areas that constitute the side margin regions 114' and 115'.

[0083] The side margin regions 114' and 115' essentially serve to prevent damage to the internal electrode layers 121 and 122 due to physical or chemical stress.

[0084] The first side margin region 114' and the second side margin region 115' do not include the internal electrode layers 121 and 122 and may contain the same material as the first dielectric layer 111, for example, they may correspond to a part of the first dielectric layer 111. That is, the first side margin region 114' and the second side margin region 115' may contain dielectric material, for example, barium titanate (BaTiO3) based dielectric material.

[0085] On the other hand, the length wm' of the third direction of the side margin regions 114' and 115' does not need to be particularly limited, and in the following, the explanation of the length wm' of the third direction of the side margin regions 114' and 115' can mean the length wm' of the third direction of the first side margin region 114' and the second side margin region 115', respectively.

[0086] To more easily achieve miniaturization and high capacitance of the stacked electronic component 100, the length wm' in the third direction of the side margin regions 114' and 115' may be 50 μm or less, preferably 30 μm or less, and more preferably 20 μm or less for ultra-small products.

[0087] Furthermore, the length wm' of the third direction of the side margin regions 114' and 115' can mean the average length wm' of the third direction of the first side margin region 114' and the second side margin region 115', respectively, or it can mean the average length wm' of the third direction of the first side margin region 114' and the second side margin region 115'.

[0088] The average length wm' of the side margin regions 114' and 115' in the third direction can be measured by scanning the cross-section of the main body 110 in the first and third directions with a scanning electron microscope (SEM) at 10,000x magnification. More specifically, it can mean the average value calculated by measuring the length in the third direction at five equally spaced points in the first direction in an image scanned from one side margin region 114', 115'.

[0089] One embodiment of the present invention describes a structure in which a stacked electronic component 100 has four external electrodes 131, 132, 133, and 134. However, the number and shape of the external electrodes 131, 132, 133, and 134 can be changed according to the form of the internal electrode layers 121 and 122 or other purposes.

[0090] The external electrodes 131, 132, 133, and 134 may include a first external electrode 131 and a second external electrode 132 positioned on the third surface 3 and the fourth surface 4, respectively, and a third external electrode 133 and a fourth external electrode 134 positioned on the fifth surface 5 and the sixth surface 6, respectively, and the first external electrode 131, the second external electrode 132, the third external electrode 133, and the fourth external electrode 134 may be positioned spaced apart from each other.

[0091] Furthermore, the first external electrode 131 and the second external electrode 132 can be extended and positioned on parts of the first surface 1 and the second surface 2, and even further, on parts of the fifth surface 5 and the sixth surface 6 of the main body 110. The third external electrode 133 and the fourth external electrode 134 may also be extended and positioned on parts of the first surface 1 and the second surface 2.

[0092] That is, the first external electrode 131 may be positioned on the third surface 3 and extended to parts of the first surface 1, the second surface 2, the fifth surface 5, and the sixth surface 6; the second external electrode 132 may be positioned on the fourth surface 4 and extended to parts of the first surface 1, the second surface 2, the fifth surface 5, and the sixth surface 6; the third external electrode 133 may be positioned on the fifth surface 5 (preferably positioned on a part of the fifth surface 5) and extended to parts of the first surface 1 and the second surface 2; and the fourth external electrode 134 may be positioned on the sixth surface 6 (preferably positioned on a part of the sixth surface 6) and extended to parts of the first surface 1 and the second surface 2.

[0093] The first external electrode 131 and the second external electrode 132 can be connected to the second internal electrode layer 122, and the third external electrode 133 and the fourth external electrode 134 can be connected to the first internal electrode layer 121. In this case, the first external electrode 131 and the second external electrode 132 may be connected to at least one of the 1-1 dummy electrode 121b-1 and 1-2 dummy electrode 121b-2 of the first internal electrode layer 121, but even in this case, they do not have to be connected to the first main section 121a-0.

[0094] On the other hand, as mentioned above, the main body can contain ceramic material, which can cause steps to occur when mounting multilayer electronic components with external electrodes onto a substrate due to the shrinkage of ceramic particles during the firing process. Alternatively, steps may occur in the main body due to the repeated stacking of internal electrodes (layers) of different shapes, which can also cause steps to occur when mounting multilayer electronic components with external electrodes onto a substrate. Such steps during mounting can lead to mounting defects and more easily induce component defects, so minimizing steps during mounting and improving the flatness of multilayer electronic component mounting is one of the important challenges.

[0095] Therefore, when observing the multilayer electronic component 100 according to an embodiment of the present invention from the third direction, the main body 110 has a length T1 in the first direction at both ends in the second direction that is greater than the length T2 in the first direction at the center in the second direction (T2 < T1). The maximum length in the first direction of the region extended and arranged on a part of the first surface 1 among the third external electrode 133 and the fourth external electrode 134 is greater than the maximum length in the first direction of the region extended and arranged on a part of the first surface 1 among the first external electrode 131 and the second external electrode 132. The maximum length ET2 in the first direction of the region extended and arranged on a part of the second surface 2 among the third external electrode 133 and the fourth external electrode 134 is greater than the maximum length ET1 in the first direction of the region extended and arranged on a part of the second surface 2 among the first external electrode 131 and the second external electrode 132 (ET1 < ET2). The both ends ELT2 in the first direction of the third external electrode 133 and the fourth external electrode 134 cannot exceed the both ends ELT1 in the first direction of the first external electrode 131 and the second external electrode 132.

[0096] In the present invention, observing the multilayer electronic component 100 from the third direction can mean observing the outside of the multilayer electronic component 100 toward the fifth surface 5 or the sixth surface 6, including the first external electrode 131, the second external electrode 132, the third external electrode 133, and the fourth external electrode 134.

[0097] The length T1 in the first direction at both ends in the second direction of the main body 110 can mean measuring the length in the first direction of the main body 110 at one end in the second direction of the first external electrode 131 or the second external electrode 132.

[0098] Specifically described with reference to FIG. 2 in which the multilayer electronic component 100 is observed toward the sixth surface 6, the length T1 in the first direction at both ends in the second direction of the main body 110 can mean the length in the first direction of the main body 100 at the outermost end (maximum point) located adjacent to the fourth external electrode 134 among the first external electrode 131 and the second external electrode 132. More specifically, the length in the first direction of one end in the second direction of the main body 110 measured at one end (maximum point) in the second direction of the second external electrode 132 adjacent to the fourth external electrode 134 can be set as T1.

[0099] In this manner, the length T1 in the first direction of the other end of the main body 110 in the second direction can also be measured and determined at one end (maximum point) of the first external electrode 131 adjacent to the fourth external electrode 134 in the second direction. Although the example given was observing the stacked electronic component 100 toward the sixth surface 6, it is obvious to any ordinary engineer that the length T1 in the first direction of both ends of the main body 110 in the second direction can also be determined by the method described above when observing the stacked electronic component 100 toward the fifth surface 5.

[0100] Furthermore, unless otherwise contradictory, the description of the length T1 in the first direction of both ends of the main body 110 in the second direction can mean the length of the main body 110 in the first direction at one end (maximum point) of the first external electrode 131 in the second direction, and the length T1 of the main body 110 in the first direction at one end (maximum point) of the second external electrode 132 in the second direction.

[0101] The length T2 of the central part of the main body 110 in the second direction in the first direction can be interpreted as the length of the main body 110 in the first direction measured at one end (maximum point) or the other end (maximum point) of the third external electrode 133 or the fourth external electrode 134 in the second direction.

[0102] Referring specifically to Figure 2, which shows the stacked electronic component 100 observed toward the sixth surface 6, the length T2 of the central part of the main body 110 in the first direction in the second direction can be said to be the smaller of the lengths of the main body 110 in the first direction measured at the furthest end (maximum point) of the fourth external electrode 134 that is adjacent to the first external electrode 131 or the second external electrode 132. More specifically, T2 can be defined as the smaller of the length of the main body 110 in the first direction measured at one end (maximum point) of the fourth external electrode 134 adjacent to the first external electrode 131 in the second direction, and the length of the main body 110 in the first direction measured at the other end (maximum point) of the fourth external electrode 134 adjacent to the second external electrode 132. For the sake of explanation, only the case where the stacked electronic component 100 is observed toward the sixth surface 6 has been described, but it is self-evident to an ordinary engineer that the same can be applied when the stacked electronic component 100 is observed toward the fifth surface 5, which is another surface observed from the third direction.

[0103] In the main body 110, the statement that the length T1 in the first direction at both ends of the second direction is greater than the length T2 in the first direction at the center of the second direction can mean that at least one of the first surface 1 and the second surface 2 includes at least a portion of a shape that is recessed inward toward the main body 110, and preferably, it can mean that the first surface 1 and the second surface 2 include at least a portion of a shape that is recessed inward toward the main body 110.

[0104] Furthermore, at least one of the first surface 1 and the second surface 2 may have curvature (κ) in the direction of the interior of the main body 110, and preferably, this means that the first surface 1 and the second surface 2 may have curvature (κ) in the direction of the interior of the main body 110.

[0105] More specifically, for example, the curvature (κ) value in the inward direction of at least one of the first surface 1 and the second surface 2 of the main body 110 may be greater than 0.0 mm and less than or equal to 1.0 mm. In other words, at least one of the first surface 1 and the second surface 2 can satisfy the curvature κ of 0.0 mm < κ ≤ 1.0 mm, which can mean that the curvature value of the first surface 1 is greater than 0.0 mm and less than or equal to 1.0 mm, or the curvature value of the second surface 2 is greater than 0.0 mm and less than or equal to 1.0 mm.

[0106] Furthermore, it can be said that the main body 110 includes at least a portion of a region in which the length in the first direction decreases as you move from both ends in the second direction toward the center of the second direction.

[0107] The method for measuring the maximum length ET2 in the first direction of the region of the third external electrode 133 and the fourth external electrode 134 that is extended onto a portion of the first surface 1 and the second surface 2, and the maximum length ET1 in the first direction of the region of the first external electrode 131 and the second external electrode 132 that is extended onto a portion of the first surface 1 and the second surface 2, may be as follows, but is not limited thereto.

[0108] First, regarding the method for measuring the maximum length ET2 in the first direction of the region of the third external electrode 133 and the fourth external electrode 134 that is extended onto a part of the first surface 1 and the second surface 2, a specific explanation will be given with reference to Figure 2, which shows the stacked electronic component 100 being observed toward the sixth surface 6. In the region of the fourth external electrode 134 that is extended onto a part of the second surface 2, the maximum length of the fourth external electrode 134 in the first direction measured from the second surface 2 can be defined as ET2. Here, the maximum length ET2 of the fourth external electrode 134 in the first direction measured from the second surface 2 can be defined as the larger of the maximum length of the fourth external electrode 134 in the first direction measured from a point adjacent to the first external electrode 131 among the points where the fourth external electrode 134 and the second surface 2 are in contact, and the maximum length of the fourth external electrode 134 in the first direction measured from another point adjacent to the second external electrode 132.

[0109] In this manner, the maximum length in the first direction of the region of the fourth external electrode 134 that extends onto a part of the first surface 1 can be determined. Similarly, when observing the stacked electronic component 100 toward the fifth surface 5, which is the surface observed from another direction in the third direction, the maximum length in the first direction of the third external electrode 133 that extends onto a part of the first surface 1, and the maximum length in the first direction of the region of the third electrode 133 that extends onto a part of the second surface 2 can also be determined using the method described above, which should be obvious to an ordinary engineer.

[0110] Next, a method for measuring the maximum length ET1 in the first direction of the region of the first external electrode 131 and the second external electrode 132 that is extended onto a part of the first surface 1 and the second surface 2 will be specifically explained with reference to Figure 2, which shows the stacked electronic component 100 being observed toward the sixth surface 6. In the region of the second external electrode 132 that is extended onto a part of the second surface, the maximum length of the second external electrode 132 in the first direction measured from the second surface 2 can be defined as ET1. Here, the maximum length ET2 of the second external electrode 132 in the second direction measured from the second surface 2 can be defined as the maximum length of the second external electrode 132 in the first direction measured from the point where the second external electrode 132 and the second surface 2 are in contact.

[0111] In this manner, the maximum length in the first direction of the region of the second external electrode 132 that extends onto a part of the first surface 1 can be determined, and the maximum length in the first direction of the region of the first external electrode 131 that extends onto a part of the first surface 1 or the second surface 2 can be determined. Similarly, when the stacked electronic component 100 is observed toward the fifth surface 5, which is the surface observed from another direction in the third direction, it is obvious to an ordinary engineer that the maximum length in the first direction of the region of the third external electrode 133 that extends onto a part of the first surface 1, and the maximum length in the first direction of the region of the third external electrode 133 that extends onto a part of the second surface 2 can also be determined by the method described above.

[0112] Furthermore, the statement that the maximum length T2 in the first direction of the region of the third external electrode 133 and the fourth external electrode 134 that is extended onto a part of the first surface 1 is greater than the maximum length T1 in the first direction of the region of the first external electrode 131 and the second external electrode 132 that is extended onto a part of the first surface 1 means that the maximum length in the first direction of the region of the third external electrode 133 that is extended onto a part of the first surface 1 is greater than the maximum length in the first direction of the region of the first external electrode 131 that is extended onto a part of the first surface 1 and the maximum length in the first direction of the region of the second external electrode 132 that is extended onto a part of the first surface 1, and the maximum length in the first direction of the region of the fourth external electrode 134 that is extended onto a part of the first surface 1 is greater than the maximum length in the first direction of the region of the first external electrode 131 that is extended onto a part of the first surface 1 and the maximum length in the first direction of the region of the second external electrode 132 that is extended onto a part of the first surface 1.

[0113] Similarly, the statement that the maximum length T2 in the first direction of the region of the third external electrode 133 and the fourth external electrode 134 that extends onto a part of the second surface 2 is greater than the maximum length T1 in the first direction of the region of the first external electrode 131 and the second external electrode 132 that extends onto a part of the second surface 2 means that the maximum length in the first direction of the region of the third external electrode 133 that extends onto a part of the second surface 2 is greater than the maximum length in the first direction of the region of the first external electrode 131 that extends onto a part of the second surface 2 and the maximum length in the first direction of the region of the second external electrode 132 that extends onto a part of the second surface 2, and the maximum length in the first direction of the region of the fourth external electrode 134 that extends onto a part of the second surface 2 is greater than the maximum length in the first direction of the region of the first external electrode 131 that extends onto a part of the second surface 2 and the maximum length in the first direction of the region of the second external electrode 132 that extends onto a part of the second surface 2.

[0114] Next, the statement that the ELT2 at both ends of the third external electrode 133 and the fourth external electrode 134 in the first direction does not exceed the ELT1 at both ends of the first external electrode 131 and the second external electrode 132 means that, when ELT2 is a straight line drawn substantially parallel to the second direction at both ends of the third external electrode 133 and the fourth external electrode 134 in the first direction, and ELT1 is a straight line drawn substantially parallel to the second direction at both ends of the first external electrode 131 and the second external electrode 132 in the first direction, then ELT2 does not exceed ELT1 in the direction outward from the main body, and it means that the difference (ST) between ELT1 and ELT2 measured from the same point on any one surface of the main body is 0 or greater (O ≤ ST).

[0115] The difference (ST) between ELT1 and ELT2, measured from the same point on either side of the main body, is most preferably 0, and the closer it is to 0, the better. The upper limit is not particularly limited, but may be 50 μm or less, 40 μm or less, 30 μm or less, 20 μm or less, or 10 μm or less.

[0116] By ensuring that the difference (ST) between ELT1 and ELT2, measured from the same point on any one surface of the main body, is 0 or greater (0 ≤ ST), the amount of solder applied between the first to fourth external electrodes 131, 132, 133, and 134 and the mounting surface can be kept constant during mounting to the substrate. This improves the mounting rate of the multilayer electronic component 100 and achieves flatness during mounting, thereby effectively preventing defects in the multilayer electronic component 100.

[0117] And that the both ends ELT2 in the first direction of the third external electrode 133 and the fourth external electrode 134 do not exceed the both ends ELT1 in the first direction of the first external electrode 131 and the second external electrode 132 means that one end in one direction of the first direction of the third external electrode 133 does not exceed one end in one direction of the first direction of the first external electrode 131 and one end in one direction of the first direction of the second external electrode 132, the other end in the other direction of the first direction of the third external electrode 133 does not exceed the other end in the other direction of the first direction of the first external electrode 131 and the other end in the other direction of the first direction of the second external electrode 132, one end in one direction of the first direction of the fourth external electrode 134 does not exceed one end in one direction of the first direction of the first external electrode 131 and one end in one direction of the first direction of the second external electrode 132, and the other end in the other direction of the first direction of the fourth external electrode 133 does not exceed the other end in the other direction of the first direction of the first external electrode 131 and the other end in the other direction of the first direction of the second external electrode 132.

[0118] In one embodiment of the present invention, the length T1 in the first direction of both end portions in the second direction of the main body 110 is larger than the length T2 in the first direction of the central portion in the second direction (T2 < T1), the maximum length in the first direction of the region extended and arranged on a part of the first surface among the third external electrode 133 and the fourth external electrode 134 is larger than the maximum length in the first direction of the region extended and arranged on a part of the first surface 1 among the first external electrode 131 and the second external electrode 132, the maximum length ET2 in the first direction of the region extended and arranged on a part of the second surface 2 among the third external electrode 133 and the fourth external electrode 134 is larger than the maximum length ET1 in the first direction of the region extended and arranged on a part of the second surface 2 among the first external electrode 131 and the second external electrode 132 (ET1 < ET2), and the both ends ELT2 in the first direction of the third external electrode 133 and the fourth external electrode 134 do not exceed the both ends ELT1 in the first direction of the first external electrode 131 and the second external electrode 132. Thus, when mounting the multilayer electronic component 100 on which the external electrodes 131, 132, 133, and 134 are formed to a substrate, the generation of steps can be minimized to improve the mounting rate, and the occurrence of mounting defects can be more effectively prevented.

[0119] Also, when observing the cross-sections in the first and second directions so as to include the main body 210, the first external electrode 231, the second external electrode 232, the third external electrode 233, and the fourth external electrode 234 at at least one of both ends of the multilayer electronic component 200 in the third direction, the main body 210 has a length T1 in the first direction at both ends in the second direction that is greater than the length T2 in the first direction at the central portion in the second direction (T2 < T1). The maximum length in the first direction of the region where the third external electrode 233 and the fourth external electrode 234 are extended and arranged on a part of the first surface 1 is greater than the maximum length in the first direction of the region where the first external electrode 231 and the second external electrode 232 are extended and arranged on a part of the first surface 1. The maximum length ET2 in the first direction of the region where the third external electrode 233 and the fourth external electrode 234 are extended and arranged on a part of the second surface 2 is greater than the maximum length ET1 in the first direction of the region where the first external electrode 231 and the second external electrode 232 are extended and arranged on a part of the second surface 2. The both ends ELT2 in the first direction of the third external electrode 233 and the fourth external electrode 234 cannot exceed the both ends ELT1 in the first direction of the first external electrode 231 and the second external electrode 232.

[0120] Here, one end of both ends of the multilayer electronic component 200 in the third direction can mean a region including the first external electrode 231, the second external electrode 232, and the fourth external electrode 231, 232, 234, and the other end can mean a region including the first external electrode 231, the second external electrode 232, and the third external electrode 233.

[0121] Except for the situation where, at at least one of both ends of the multilayer electronic component 200 in the third direction, the cross-sections in the first and second directions are observed so as to include the main body 210, the first external electrode 231, the second external electrode 232, the third external electrode 233, and the fourth external electrode 234, it can be the same as when observing the multilayer electronic component 100 from the third direction, so a specific description thereof is omitted. Also, although the above content has been described based on the multilayer electronic component 200 according to another embodiment, it can be said to be obvious to an ordinary technician that it can be similarly applied to the multilayer electronic component 100 according to one embodiment as long as there is no particular contradiction.

[0122] On the other hand, the average length in the first direction of the regions of the third external electrode 133 and the fourth external electrode 134 that are extended onto a part of the first surface 1 may be greater than the average length in the first direction of the regions of the first external electrode 131 and the second external electrode 132 that are extended onto a part of the first surface 1, and the average length in the first direction of the regions of the third external electrode 133 and the fourth external electrode 134 that are extended onto a part of the second surface 2 may be greater than the average length in the first direction of the regions of the first external electrode 131 and the second external electrode 132 that are extended onto a part of the second surface 2.

[0123] Here, the method for determining the average length in the first direction of each region of the first external electrode 131, second external electrode 132, third external electrode 133, and fourth external electrode 134 that are extended and positioned on a part of the first surface 1 and the second surface 2 may be as follows, but is not limited thereto, and can be similarly applied to the stacked electronic component 200 according to another embodiment of the present invention. First, when the cross-sections in the first and second directions of the stacked electronic component 100, including the main body 110 and the first external electrode 131, second external electrode 132, third external electrode 133, and fourth external electrode 134, are observed using a scanning electron microscope (SEM), transmission electron microscope (TEM), or scanning transmission electron microscope (STEM), the average value obtained by averaging the length in the first direction at the center of the second direction of the region of the first external electrode 131, second external electrode 132, third external electrode 133, and fourth external electrode 134 that extends onto a portion of the first surface 1 and second surface 2, and the length in the first direction at a point separated by a certain distance in both directions from the center of the second direction, can be taken as the average length in the first direction of each of the regions of the first external electrode 131, second external electrode 132, third external electrode 133, and fourth external electrode 134 that extends onto a portion of the first surface 1 and second surface 2.

[0124] More specifically, when the cross-sections in the first and second directions of a stacked electronic component 100, including the main body 110 which is one end of the third direction, and the first external electrode 131, the second external electrode 132, and the fourth external electrode 134, are observed with a scanning electron microscope (SEM), TEM, STEM, etc., the average length in the first direction of the region of the fourth external electrode 134 that is extended onto a part of the second surface 2 at the center of the second direction and the length of the fourth external electrode 134 in the first direction at a point separated by a certain distance in both directions from the center of the second direction can be taken as the average length in the first direction of the region of the fourth external electrode 134 that is extended onto a part of the second surface 2.

[0125] In this manner, the average length in the first direction of the region of the fourth external electrode 134 that is extended onto a part of the first surface 1 can be determined, as can the average length in the first direction of the regions of the first external electrode 131 and the second external electrode 132 that are extended onto a part of the first surface 1, and as can the average length in the first direction of the regions of the first external electrode 131 and the second external electrode 132 that are extended onto a part of the second surface 2. Similarly, it is obvious to an ordinary engineer that by observing the cross-sections in the first and second directions of the stacked electronic component 100, including the main body 110 which is the other end in the third direction, and the first external electrode 131, the second external electrode 132, and the third external electrode 133, using a scanning electron microscope (SEM) or the like (SEM, TEM, STEM), the average length in the first direction of each region of the first external electrode 131, the second external electrode 132, and the third external electrode 133 that are extended onto a part of the first surface 1, and the average length in the first direction of each region of the first external electrode 131, the second external electrode 132, and the third external electrode 133 that are extended onto a part of the second surface 2, can be determined.

[0126] This may also be true for various forms of stacked electronic components, including the stacked electronic component 200 according to another embodiment of the present invention.

[0127] The average length in the first direction of the regions of the third external electrode 133 and the fourth external electrode 134 that are extended onto a part of the first surface 1 is greater than the average length in the first direction of the regions of the first external electrode 131 and the second external electrode 132 that are extended onto a part of the first surface 1, and the average length in the first direction of the regions of the third external electrode 133 and the fourth external electrode 134 that are extended onto a part of the second surface 2 is greater than the average length in the first direction of the regions of the first external electrode 131 and the second external electrode 132 that are extended onto a part of the second surface 2. As a result, when mounting the stacked electronic component 100 on a substrate with the external electrodes 131, 132, 133, and 134 formed on it, the occurrence of steps can be minimized, the mounting rate can be improved, and the occurrence of mounting defects can be more effectively prevented.

[0128] The external electrodes 131, 132, 133, and 134 may be formed from any material that has electrical conductivity, such as metal, and the specific material may be determined by considering electrical properties, structural stability, etc. Furthermore, they may have a multilayer structure.

[0129] For example, the external electrodes 131, 132, 133, and 134 may include first electrode layers 131a, 132a, 133a, and 134a placed on the main body 110, and second electrode layers 131b, 132b, 133b, and 134b placed on the first electrode layers 131a, 132a, 133a, and 134a.

[0130] Here, it is preferable that the first electrode layers 131a, 132a, 133a, 134a and the second electrode layers 131b, 132b, 133b, 134b are layers that are distinct from each other. However, it is not limited to this, and they may be separated according to the order of the manufacturing process, and the first electrode layers 131a, 132a, 133a, 134a and the second electrode layers 131b, 132b, 133b, 134b may be observed as a single layer without being distinguished from each other.

[0131] In this invention, "distinguished" can mean, but is not limited to, two layers being distinguishable by physical differences, chemical differences, and / or simple optical differences, however, the distinction between layers can be made by the presence or absence of an "interface." An interface can mean a surface in which two layers in contact with each other are distinguishable from one another, for example, a state in which they can be distinguished by differences in components determined by EDS analysis using equipment such as a scanning electron microscope (SEM).

[0132] The first electrode layers 131a, 132a, 133a, and 134a may be formed by transferring a sheet containing a conductive metal onto the main body 110, by applying a conductive paste for external electrodes containing a conductive metal to the main body 110 and then firing it, or by a dipping method in which the main body 110 is immersed in a conductive paste for external electrodes containing a conductive metal, but are not limited to these methods.

[0133] To give a more specific example for the first electrode layers 131a, 132a, 133a, and 134a, the first electrode layers 131a, 132a, 133a, and 134a may be fired electrodes containing conductive metal and glass.

[0134] As the conductive metal contained in the electrode layers 131a, 132a, 133a, and 134a, a material with excellent electrical conductivity can be used. For example, the conductive metal may include one or more selected from the group consisting of nickel (Ni), copper (Cu), palladium (Pd), silver (Ag), gold (Au), platinum (Pt), tin (Sn), tungsten (W), titanium (Ti), and alloys thereof, but is not particularly limited thereto.

[0135] Furthermore, the glass contained in the electrode layers 131a, 132a, 133a, and 134a can play a role in improving the bonding with the main body 110.

[0136] The second electrode layers 131b, 132b, 133b, and 134b can play a role in improving mounting characteristics, and may be plated layers formed by a plating method on the first electrode layers 131a, 132a, 133a, and 134a, but are not particularly limited thereto.

[0137] The types of the second electrode layers 131b, 132b, 133b, and 134b are not particularly limited and may include, for example, at least one of nickel (Ni), tin (Sn), silver (Ag), palladium (Pd), and alloys thereof.

[0138] The second electrode layers 131b, 132b, 133b, and 134b may be a single layer or multiple layers.

[0139] More specifically, for example, the second electrode layers 131b, 132b, 133b, and 134b may be nickel (Ni) electrode layers or tin (Sn) electrode layers, and may be configured such that nickel (Ni) electrode layers and tin (Sn) electrode layers are formed sequentially on the first electrode layers 131a, 132a, 133a, and 134a, or may be configured such that tin (Sn) electrode layers, nickel (Ni) electrode layers, and tin (Sn) electrode layers are formed sequentially. Furthermore, the second electrode layers 131b, 132b, 133b, and 134b may include multiple nickel (Ni) electrode layers and / or multiple tin (Sn) electrode layers.

[0140] There is no particular limit to the size of the stacked electronic component 100.

[0141] However, in order to achieve both miniaturization and high capacitance simultaneously, the length of the dielectric layer and internal electrode layer in the first direction must be reduced and the number of layers increased. Therefore, the effects of the present invention may become more pronounced in a stacked electronic component 100 having a size of 2012 (length in the second direction × length in the third direction: 2.0 mm × 1.2 mm, where the length in the second direction and the length in the third direction satisfy an error of ±10%) or less.

[0142] Although embodiments of the present invention have been described in detail above, the present invention is not limited by the embodiments described above and the accompanying drawings, but is limited by the claims provided herein. Therefore, within the scope of the technical idea of ​​the present invention as described in the claims, various forms of substitution, modification, and alteration are possible by persons with ordinary skill in the art, and these also fall within the scope of the present invention.

[0143] Furthermore, the term "embodiment" as used in this invention does not mean that each "embodiment" is the same as another, but is provided to highlight and describe the unique and distinct features of each. However, the above-presented embodiments do not preclude their realization in combination with features of another embodiment. For example, even if a matter described in one particular embodiment is not described in another embodiment, it can be understood as a description related to the other embodiment, unless there is a description in the other embodiment that contradicts or is contrary to that matter.

[0144] The terms used in this invention are used solely to describe one embodiment and are not intended to limit the invention. In this context, singular expressions may include plural expressions unless the context clearly indicates otherwise. [Explanation of Symbols]

[0145] 100: Stacked Electronic Components 110: Main unit 111: Dielectric layer 112, 113: Cover section 114', 115': Side margin area 121, 122: Internal electrode layer 131, 132, 133, 134: External electrode

Claims

1. A body comprising a dielectric layer and a first internal electrode layer and a second internal electrode layer arranged alternately in a first direction with respect to the dielectric layer, and including a first and second surface facing each other in the first direction, a third and fourth surface connected to the first and second surfaces and facing each other in a second direction, and a fifth and sixth surface connected to the first, second, third and fourth surfaces and facing each other in a third direction, A first external electrode and a second external electrode are arranged on the third and fourth surfaces, respectively, and are extended to parts of the first and second surfaces, A stacked electronic component comprising a third external electrode and a fourth external electrode, which are arranged on the fifth and sixth surfaces respectively and extend to parts of the first and second surfaces, When the stacked electronic component is observed from the third direction, The main body is such that the length in the first direction of both ends in the second direction is greater than the length in the first direction of the central part in the second direction. The maximum length in the first direction of the region of the third external electrode and the fourth external electrode that is extended onto a part of the first surface is greater than the maximum length in the first direction of the region of the first external electrode and the second external electrode that is extended onto a part of the first surface. The maximum length in the first direction of the region of the third external electrode and the fourth external electrode that is extended to a part of the second surface is greater than the maximum length in the first direction of the region of the first external electrode and the second external electrode that is extended to a part of the second surface. A stacked electronic component in which both ends of the third external electrode and the fourth external electrode in the first direction do not extend beyond both ends of the first external electrode and the second external electrode in the first direction.

2. The average length in the first direction of the regions of the third external electrode and the fourth external electrode that are extended onto a part of the first surface is greater than the average length in the first direction of the regions of the first external electrode and the second external electrode that are extended onto a part of the first surface. The stacked electronic component according to claim 1, wherein the average length in the first direction of the regions of the third external electrode and the fourth external electrode that are extended to a part of the second surface is greater than the average length in the first direction of the regions of the first external electrode and the second external electrode that are extended to a part of the second surface.

3. The first internal electrode layer includes a first internal electrode exposed on the fifth and sixth surfaces and connected to the third and fourth external electrodes, and a first dummy electrode positioned at a distance from the first internal electrode. The stacked electronic component according to claim 1, wherein the second internal electrode layer includes a second internal electrode that is exposed on the third and fourth surfaces and connected to the first external electrode and the second external electrode.

4. The stacked electronic component according to claim 3, wherein the first dummy electrode includes a first-first dummy electrode disposed between the first internal electrode and the third surface, and a first-second dummy electrode disposed between the first internal electrode and the fourth surface.

5. The stacked electronic component according to claim 3, wherein the second internal electrode is arranged at a distance from the fifth and sixth surfaces.

6. The stacked electronic component according to claim 3, wherein the second internal electrode layer is made up of the second internal electrode.

7. The stacked electronic component according to any one of claims 1 to 6, wherein at least one of the first surface and the second surface includes at least a portion of a shape that is recessed inward toward the body.

8. When the stacked electronic component is observed from the third direction, The stacked electronic component according to any one of claims 1 to 6, wherein the main body includes at least a portion of a region in which the length in the first direction decreases as it moves from both ends in the second direction toward the center in the second direction.

9. A body comprising a dielectric layer and a first internal electrode layer and a second internal electrode layer arranged alternately in a first direction with respect to the dielectric layer, and including a first and second surface facing each other in the first direction, a third and fourth surface connected to the first and second surfaces and facing each other in a second direction, and a fifth and sixth surface connected to the first, second, third and fourth surfaces and facing each other in a third direction, A first external electrode and a second external electrode are arranged on the third and fourth surfaces, respectively, and are extended to parts of the first and second surfaces, A stacked electronic component comprising a third external electrode and a fourth external electrode, which are arranged on the fifth and sixth surfaces respectively and extend to parts of the first and second surfaces, When the cross-sections in the first and second directions are observed at least one of the ends of the stacked electronic component in the third direction, including the main body and the first external electrode, the second external electrode, the third external electrode, and the fourth external electrode, The main body is such that the length in the first direction of both ends in the second direction is greater than the length in the first direction of the central part in the second direction. The maximum length in the first direction of the region of the third external electrode and the fourth external electrode that is extended onto a part of the first surface is greater than the maximum length in the first direction of the region of the first external electrode and the second external electrode that is extended onto a part of the first surface. The maximum length in the first direction of the region of the third external electrode and the fourth external electrode that is extended to a part of the second surface is greater than the maximum length in the first direction of the region of the first external electrode and the second external electrode that is extended to a part of the second surface. A stacked electronic component in which both ends of the third external electrode and the fourth external electrode in the first direction do not extend beyond both ends of the first external electrode and the second external electrode in the first direction.

10. The average length in the first direction of the regions of the third external electrode and the fourth external electrode that are extended onto a part of the first surface is greater than the average length in the first direction of the regions of the first external electrode and the second external electrode that are extended onto a part of the first surface. The stacked electronic component according to claim 9, wherein the average length in the first direction of the regions of the third external electrode and the fourth external electrode that are extended to a part of the second surface is greater than the average length in the first direction of the regions of the first external electrode and the second external electrode that are extended to a part of the second surface.

11. The first internal electrode layer includes a first internal electrode exposed on the fifth and sixth surfaces and connected to the third and fourth external electrodes, and a first dummy electrode positioned at a distance from the first internal electrode. The stacked electronic component according to claim 9, wherein the second internal electrode layer includes a second internal electrode that is exposed on the third and fourth surfaces and connected to the first external electrode and the second external electrode.

12. The stacked electronic component according to claim 11, wherein the first dummy electrode includes a first-first dummy electrode disposed between the first internal electrode and the third surface, and a first-second dummy electrode disposed between the first internal electrode and the fourth surface.

13. The stacked electronic component according to claim 11, wherein the second internal electrode is arranged at a distance from the fifth and sixth surfaces.

14. The stacked electronic component according to claim 11, wherein the second internal electrode layer is made up of the second internal electrode.

15. The stacked electronic component according to any one of claims 9 to 14, wherein at least one of the first surface and the second surface includes at least a portion of a shape that is recessed inward toward the body.

16. When the cross-sections in the first and second directions are observed at least one of the ends of the stacked electronic component in the third direction, including the main body and the first external electrode, the second external electrode, the third external electrode, and the fourth external electrode, The stacked electronic component according to any one of claims 9 to 14, wherein the main body includes at least a portion of a region in which the length in the first direction decreases as it moves from both ends in the second direction toward the center in the second direction.

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