Multilayer ceramic electronic components and assemblies

Abstract

The present invention relates to a layered ceramic electronic component in which a first side surface electrode (51) connects a first external electrode layer (31) and a second internal electrode layer (42) to each other on a first side surface (S1) of a piezoelectric ceramic section (70) and is separated from a first internal electrode layer (41). A second side surface electrode (52) connects a second external electrode layer (32) and the first internal electrode layer (41) to each other on a second side surface (S2) and is separated from the second internal electrode layer (42). The ratio of a part in which all of a region of overlap between the first external electrode layer (31) and the first internal electrode layer (41), a region of overlap between the first internal electrode layer (41) and the second internal electrode layer (42), and a region of overlap between the second external electrode layer (32) and the second internal electrode layer (42) overlap in a two-dimensional layout is 75% or more with respect to the region in which the piezoelectric ceramic section (70) is arranged.

Description

[Technical Field]

[0001] The present invention relates to multilayer ceramic electronic components and assemblies. [Background technology]

[0002] Japanese Patent Laid-Open Publication No. 2017-183542 (Patent Document 1) discloses a piezoelectric element suitable for use as an actuator. The piezoelectric element includes a piezoelectric body, a first electrode, and a second electrode. The piezoelectric body is formed in a substantially rectangular parallelepiped shape extending in the longitudinal direction. The piezoelectric body has a pair of end faces, a pair of first side faces, and a pair of second side faces. The pair of end faces, the pair of first side faces, and the pair of second side faces are surfaces of the piezoelectric body. The pair of end faces are perpendicular to the longitudinal direction and face each other. The pair of first side faces extend parallel to the longitudinal direction and face each other. The pair of second side faces extend parallel to the longitudinal direction and face each other. The pair of second side faces are orthogonal to the pair of first side faces. In the piezoelectric element, the first internal electrode and the first external electrode function as first electrodes for applying an electric field to the piezoelectric body, and the second internal electrode and the second external electrode function as second electrodes for applying an electric field to the piezoelectric body. In the piezoelectric body, the region sandwiched between the second electrode portion and the first internal electrode, the region sandwiched between the first internal electrode and the second internal electrode, and the region sandwiched between the second internal electrode and the third electrode portion are active regions that displace in response to an applied electric field. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-183542 Summary of the Invention [Problem to be solved by the invention]

[0004] The piezoelectric element disclosed in JP 2017-183542 A lacks an active region at both ends in the longitudinal direction (the displacement direction of the actuator) over a length that is significant in terms of piezoelectric displacement. As a result, the amount of displacement that the actuator (multilayer ceramic electronic component) can generate is reduced. While the amount of displacement can be increased by increasing the size of the piezoelectric element in the displacement direction, there are usually limitations on this size.

[0005] The present invention has been made to solve the above-mentioned problems, and one object of the present invention is to provide a multilayer ceramic electronic component that can generate a large amount of displacement while being subject to dimensional constraints in the displacement direction. [Means for solving the problem]

[0006] The multilayer ceramic electronic component of the present invention includes a piezoelectric ceramic part having first and second main surfaces opposite to each other in a thickness direction, first and second end faces opposite to each other in a first direction different from the thickness direction, first and second side faces opposite to each other in the thickness direction and in a second direction different from the first direction, a first dimension in the first direction, and a second dimension in the second direction, the first dimension being greater than the second dimension. The multilayer ceramic electronic component further includes a first external electrode layer arranged on the first main surface, a second external electrode layer arranged on the second main surface, a first internal electrode layer arranged between the first external electrode layer and the second external electrode layer in the piezoelectric ceramic portion, a second internal electrode layer arranged between the second external electrode layer and the first internal electrode layer in the piezoelectric ceramic portion, a first side electrode connecting the first external electrode layer and the second internal electrode layer to each other on the first side surface and spaced apart from the first internal electrode layer, and a second side electrode connecting the second external electrode layer and the first internal electrode layer to each other on the second side surface and spaced apart from the second internal electrode layer. In a two-dimensional layout including the first direction and the second direction, the ratio of the overlapping areas of the area where the first external electrode layer and the first internal electrode layer overlap, the area where the first internal electrode layer and the second internal electrode layer overlap, and the area where the second external electrode layer and the second internal electrode layer overlap is 75% or more relative to the area where the piezoelectric ceramic part is arranged. [Effects of the Invention]

[0007] According to the multilayer ceramic electronic component of the present invention, the amount of displacement that can be generated by the multilayer ceramic electronic component can be increased. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a side view schematically showing the configuration of an assembly according to the first embodiment. [Figure 2] 1 is a top view schematically showing a configuration of a multilayer ceramic electronic component in accordance with a first embodiment. [Figure 3]1 is a bottom view schematically showing the configuration of the multilayer ceramic electronic component in accordance with Embodiment 1. FIG. [Figure 4] 1 is a left side view schematically showing the configuration of a multilayer ceramic electronic component in accordance with a first embodiment. [Figure 5] 1 is a right side view schematically showing the configuration of the monolithic ceramic electronic component in accordance with Embodiment 1. FIG. [Figure 6] FIG. 10 is a top view schematically illustrating the configuration of a multilayer ceramic electronic component according to a comparative example. [Figure 7] FIG. 10 is a bottom view schematically illustrating the configuration of a multilayer ceramic electronic component according to a comparative example. [Figure 8] FIG. 10 is a left side view schematically showing the configuration of a multilayer ceramic electronic component according to a comparative example. [Figure 9] FIG. 10 is a right side view schematically showing the configuration of a multilayer ceramic electronic component according to a comparative example. [Figure 10] 10 is a graph showing an example of a simulation result of the relationship between voltage and displacement amount in each of an example and a comparative example of the first embodiment. FIG. [Figure 11] FIG. 10 is a graph showing an example of a simulation result of the relationship between the active area ratio and the amount of displacement. [Figure 12] FIG. 10 is a top view schematically showing the configuration of a multilayer ceramic electronic component in accordance with a second embodiment. [Figure 13] FIG. 10 is a top view schematically showing the configuration of a multilayer ceramic electronic component in a first modified example of the second embodiment. [Figure 14] FIG. 10 is a top view schematically showing the configuration of a multilayer ceramic electronic component in a second modified example of the second embodiment. [Figure 15] FIG. 11 is a top view schematically showing the configuration of a multilayer ceramic electronic component according to a third embodiment. [Figure 16] FIG. 16 is a graph showing the distribution of inactive lengths in the multilayer ceramic electronic component of FIG. [Figure 17] 3 is a graph showing the distribution of inactive lengths in the multilayer ceramic electronic component of FIG. 2. FIG. [Figure 18]FIG. 11 is a top view schematically showing the configuration of a multilayer ceramic electronic component in a first modified example of the third embodiment. [Figure 19] FIG. 19 is a graph showing the distribution of inactive lengths in the multilayer ceramic electronic component of FIG. [Figure 20] FIG. 13 is a top view schematically showing the configuration of a multilayer ceramic electronic component in a second modified example of the third embodiment. [Figure 21] FIG. 21 is a graph showing the distribution of inactive lengths in the multilayer ceramic electronic component of FIG. 20. [Figure 22] 3 is a contour diagram showing an example of a simulation result of stress distribution in the vicinity of an inactive region in the multilayer ceramic electronic component of FIG. 2 under piezoelectric displacement. [Figure 23] 23 is a vector diagram corresponding to FIG. 22. [Figure 24] 16 is a contour map showing an example of a simulation result of stress distribution in the vicinity of an inactive region in the multilayer ceramic electronic component of FIG. 15 under piezoelectric displacement. [Figure 25] 25 is a vector diagram corresponding to FIG. 24. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In some of the drawings, an XYZ Cartesian coordinate system having an X direction, a Y direction, and a Z direction is shown to facilitate understanding of the directional relationships between the drawings. Note that the same or corresponding parts in the following drawings are given the same reference numerals, and their description will not be repeated. Furthermore, the terms "upper," "lower," "left," and "right" may be used in this specification in connection with the drawings, but these terms are used to facilitate understanding of the directional relationships between multiple drawings, and do not imply that the orientation of the configurations shown in the drawings must be oriented in a specific direction.

[0010] <First Embodiment> (Assembly configuration) 1 is a side view schematically illustrating the configuration of an assembly 500 according to the first embodiment. The assembly 500 includes a multilayer ceramic electronic component 110 and a mounted component 220 on which the multilayer ceramic electronic component 110 is mounted. The multilayer ceramic electronic component 110 is a piezoelectric actuator for generating a displacement in a longitudinal direction Y (first direction) as a displacement direction.

[0011] The mounted component 220 has a first support portion 221 and a second support portion 222 that support the multilayer ceramic electronic component 110. The mounted component 220 is configured so that the first support portion 221 and the second support portion 222 are relatively displaceable in the length direction Y (first direction). In the view of FIG. 1, the first support portion 221 and the second support portion 222 are separated from each other by a space portion. This allows the multilayer ceramic electronic component 110, which serves as an actuator, to be mounted on the first support portion 221 and the second support portion 222. 222 The space may be omitted depending on the application. The mounted component 220 may have a portion where the first support portion 221 and the second support portion 222 are connected to each other.

[0012] The assembly 500 further includes a first joint 321, a second joint 322, and a wiring portion 310. The first joint 321 and the second joint 322 mechanically join the multilayer ceramic electronic component 110 (specifically, the second external electrode layer 32 (FIG. 4) described later) to the first support portion 221 and the second support portion 222, respectively. At least one of the first joint 321 and the second joint 322 is an electrical joint that electrically joins the multilayer ceramic electronic component 110 to the mounted component 220. The electrical joint is made of a material containing a conductor to ensure good electrical conductivity. If at least one of the first joint 321 and the second joint 322 is an electrical joint, the other does not need to be an electrical joint and may be made of an insulating material. The thickness of the first joint 321 and the second joint 322 is, for example, approximately 2 to 3 μm.

[0013] Further assembly 500The multilayer ceramic electronic component 110 has a wiring portion 310 electrically connected to the multilayer ceramic electronic component 110 (specifically, a first external electrode layer 31 (FIG. 4) described later). A voltage can be applied to the multilayer ceramic electronic component by applying an external voltage between the wiring portion 310 and the electrical connection portion. The wiring portion 310 may have, for example, a wire 312 and a wire connection portion 311.

[0014] (Structure of multilayer ceramic electronic components) 2 to 5 are a top view, a bottom view, a left side view, and a right side view, respectively, that schematically show the configuration of a multilayer ceramic electronic component 110 according to Embodiment 1. The multilayer ceramic electronic component 110 has a piezoelectric ceramic part 70, a first external electrode layer 31, a second external electrode layer 32, a first internal electrode layer 41, a second internal electrode layer 42, a first side surface electrode 51, and a second side surface electrode 52. A voltage for driving the multilayer ceramic electronic component 110 is applied between the first external electrode layer 31 and the second external electrode layer 32. Therefore, the first external electrode layer 31 and the second external electrode layer 32 are electrodes having polarities opposite to each other.

[0015] The piezoelectric ceramic part 70 has a first main surface M1 and a second main surface M2 that are opposite to each other in the thickness direction Z. The piezoelectric ceramic part 70 also has a first end face E1 and a second end face E2 that are opposite to each other in the length direction Y. The length direction Y is a direction different from the thickness direction Z and is perpendicular to the thickness direction Z in this embodiment. The piezoelectric ceramic part 70 also has a first side surface S1 and a second side surface S2 that are opposite to each other in the width direction X (second direction). The width direction X is a direction different from the thickness direction Z and the length direction Y and is perpendicular to the thickness direction Z and the length direction Y in this embodiment.

[0016] The piezoelectric ceramic part 70 has a length dimension DY (first dimension) and a width dimension DX (second dimension) in the length direction Y and width direction X, respectively. The length dimension DY is larger than the width dimension DX, and may be, for example, 125% or more of the width dimension. Typically, the shape of the piezoelectric ceramic part 70 in the XY plane (planar view perpendicular to the thickness direction) is a rectangle having a side with a width dimension in the X direction and a side with a length dimension in the Y direction.

[0017] The first side surface S1 has a first non-connection region S1N and a first connection region S1C, and the first connection region S1C connects the first main surface M1 and the second main surface M2. The second side surface S2 has a second non-connection region S2N and a second connection region S2C, and the second connection region S2C connects the first main surface M1 and the second main surface M2.

[0018] The first external electrode layer 31 is disposed on the first main surface M1. The first main surface M1 includes a first inactive region RN1, which separates the first external electrode layer 31 from the second connection region S2C of the second side surface S2. Thus, the first inactive region RN1 separates the first external electrode layer 31 from the second side surface electrode 52. The second external electrode layer 32 is disposed on the second main surface M2. The second main surface M2 includes a second inactive region RN2, which separates the second external electrode layer 32 from the first connection region S1C of the first side surface S1. Thus, the second inactive region RN2 separates the second external electrode layer 32 from the first side surface electrode 51.

[0019] In the width direction X, the first inactive region RN1 and the second inactive region RN2 each have a first inactive width N1 ( 2 ) and the second inactive width N2 (Fig. 3 ) The piezoelectric ceramic part 70 has a width dimension DX in the width direction X. Preferably, D / N1≧2 and D / N2≧2 are satisfied, more preferably, D / N1≧3 and D / N2≧3 are satisfied, and even more preferably, D / N1≧4 and D / N2≧4 are satisfied.

[0020] The first internal electrode layer 41 is disposed between the first external electrode layer 31 and the second external electrode layer 32 in the piezoelectric ceramic portion 70. Referring to FIG. 5, the first internal electrode layer 41 is separated from the first connection region S1C of the first side surface S1. Therefore, the first internal electrode layer 41 is separated from the first side surface electrode 51. The distance between the first internal electrode layer 41 and the first side surface electrode 51 is preferably 0.05 mm or more and 0.25 mm or less. When the distance is 0.05 mm or more, a sufficient insulation distance is ensured. When the distance is 0.25 mm or less, a sufficient active area is ensured, thereby obtaining a large displacement. The second internal electrode layer 42 is disposed between the second external electrode layer 32 and the first internal electrode layer 41 in the piezoelectric ceramic portion 70. The second internal electrode layer 42 is separated from the second connection region S2C of the second side surface S2. Therefore, the second internal electrode layer 42 is separated from the second side surface electrode 52. The distance between the second internal electrode layer 42 and the second side electrode 52 is preferably 0.05 mm or more and 0.25 mm or less. When the distance is 0.05 mm or more, a sufficient insulation distance is ensured. When the distance is 0.25 mm or less, a sufficient active area is ensured, thereby obtaining a large displacement. In the XY plane (planar view perpendicular to the thickness direction), the first internal electrode layer 41 and the second external electrode layer 32 may have a common shape and a common arrangement, and the second internal electrode layer 42 and the first external electrode layer 31 may have a common shape and a common arrangement. As a first modified example, multiple first internal electrode layers 41 may be used instead of one first internal electrode layer 41. As a second modified example, multiple second internal electrode layers 42 may be used instead of one second internal electrode layer 42. The first modified example and the second modified example may be combined. In these modified examples, the first internal electrode layers 41 and the second internal electrode layers 42 are alternately arranged in the thickness direction.

[0021] Generally, a multilayer ceramic electronic component is an electronic component having a structure in which ceramic layers and electrode layers are stacked in the thickness direction. In the multilayer ceramic electronic component 110, the multiple electrode layers are composed of a first external electrode layer 31, a second external electrode layer 32, a first internal electrode layer 41, and a second internal electrode layer 42. Multiple ceramic layers disposed between these layers constitute a piezoelectric ceramic part 70. Note that, in this embodiment, a configuration in which two internal electrode layers, the first internal electrode layer 41 and the second internal electrode layer 42, are provided in the piezoelectric ceramic part 70 is described in detail, but the number of internal electrode layers is not limited to this.

[0022] The first side electrode 51 is disposed on the first connection region S1C of the first side face S1, outside the first non-connection region S1N of the first side face S1. The first side electrode 51 connects the first external electrode layer 31 and the second internal electrode layer 42 to each other on the first side face S1. In FIG. 5, the first side electrode 51 reaches the second main surface M2. Note that the first side electrode 51 does not necessarily have to reach the second main surface M2. The second side electrode 52 is disposed on the second connection region S2C of the second side face S2, outside the second non-connection region S2N of the second side face S2. The second side electrode 52 connects the second external electrode layer 32 and the first internal electrode layer 41 to each other on the second side face S2. In FIG. 4, the second side electrode 52 reaches the first main surface M1. Note that the second side electrode 52 does not necessarily have to reach the first main surface M1. It is preferable that each of the first side electrode 51 and the second side electrode 52 has a dimension in the Y direction that is 2.5% to 25% of the length dimension DY. If it is 2.5% or more, reliability against disconnection is sufficiently ensured. If it is 25% or less, a sufficient active area is ensured, thereby obtaining a large displacement.

[0023] In a two-dimensional layout including the X and Y directions, i.e., a two-dimensional layout on the XY plane, the active area ratio is defined as the ratio of the overlapping areas of the first external electrode layer 31 and the first internal electrode layer 41, the overlapping areas of the first internal electrode layer 41 and the second internal electrode layer 42, and the overlapping areas of the second external electrode layer 32 and the second internal electrode layer 42, to the area in which the piezoelectric ceramic part 70 is arranged. The active area ratio corresponds to the ratio of the area of ​​the piezoelectric ceramic part 70 in which the multilayer ceramic electronic component 110 can utilize its piezoelectric properties. The active area ratio is 75% or more. From the viewpoint of improving the displacement characteristics of the multilayer ceramic electronic component 110, the active area ratio is preferably 85% or more, more preferably 90% or more, and even more preferably 95% or more. On the other hand, from the viewpoint of ease of manufacture of the multilayer ceramic electronic component 110, the active area ratio is preferably less than 100%, more preferably 95% or less, and even more preferably 90% or less.

[0024] In the above two-dimensional layout, it is preferable that the first side electrode 51 and the second side electrode 52 are provided symmetrically to each other on the piezoelectric ceramic part 70. Specifically, in the two-dimensional layout on the XY plane, the first side electrode 51 and the second side electrode 52 may be provided line-symmetrically with respect to a reference line extending along the Y direction. Alternatively, or in addition to this, in the two-dimensional layout on the XY plane, the first side electrode 51 and the second side electrode 52 may be provided line-symmetrically with respect to a reference point. point The two-dimensional layouts illustrated in Figures 2 and 3 have both line symmetry and point symmetry.

[0025] The piezoelectric ceramic portion 70 may include at least one of a first dummy electrode layer 62 and a second dummy electrode layer 61. The first dummy electrode layer 62 is disposed on a portion of the first inactive region RN1 of the first principal surface M1 and is separated from the first external electrode layer 31 by the other portion of the first inactive region RN1 of the first principal surface M1. Therefore, the first dummy electrode layer 62 is separated from the first external electrode layer 31. The distance between the first dummy electrode layer 62 and the first external electrode layer 31 in the XY plane is preferably 0.05 mm or more and 0.25 mm or less. If the distance is 0.05 mm or more, a sufficient insulating distance is ensured. If the distance is 0.25 mm or less, a sufficient active area is ensured, thereby obtaining a large displacement. The second side electrode 52 reaches the first dummy electrode layer 62. The second dummy electrode layer 61 is disposed on a portion of the second inactive region RN2 of the second principal surface M2 and is separated from the second external electrode layer 32 by the other portion of the second inactive region RN2 of the second principal surface M2. Therefore, the second dummy electrode layer 61 is separated from the second external electrode layer 32. The distance between the second dummy electrode layer 61 and the second external electrode layer 32 in the XY plane is preferably 0.05 mm or more and 0.25 mm or less. If the distance is 0.05 mm or more, a sufficient insulating distance is ensured. If the distance is 0.25 mm or less, a sufficient active area is ensured, thereby obtaining a large displacement. The first side electrode 51 reaches the second dummy electrode layer 61.

[0026] In this embodiment, the first connection region S1C of the first side surface S1 is spaced apart from the first end face E1 and the second end face E2. The second connection region S2C of the second side surface S2 is spaced apart from the first end face E1 and the second end face E2. Therefore, the first side surface electrode 51 and the second side surface electrode 52 are spaced apart from the first end face E1 and the second end face E2.

[0027] In this embodiment, the first external electrode layer 31 reaches each of the first end face E1 and the second end face E2. In other words, the shortest distance between the first external electrode layer 31 and each of the first end face E1 and the second end face E2 is zero. The second external electrode layer 32 reaches each of the first end face E1 and the second end face E2. In other words, the shortest distance between the second external electrode layer 32 and each of the first end face E1 and the second end face E2 is zero. The first internal electrode layer 41 reaches each of the first end face E1 and the second end face E2. In other words, the shortest distance between the first internal electrode layer 41 and each of the first end face E1 and the second end face E2 is zero. The second internal electrode layer 42 reaches each of the first end face E1 and the second end face E2. In other words, the shortest distance between the second internal electrode layer 42 and each of the first end face E1 and the second end face E2 is zero.

[0028] In this embodiment, the first external electrode layer 31 reaches each of the first side surface S1 and the second side surface S2. In other words, the shortest distance between the first external electrode layer 31 and each of the first side surface S1 and the second side surface S2 is zero. The second external electrode layer 32 reaches each of the first side surface S1 and the second side surface S2. In other words, the shortest distance between the second external electrode layer 32 and each of the first side surface S1 and the second side surface S2 is zero. The first internal electrode layer 41 reaches each of the first side surface S1 and the second side surface S2. In other words, the distance between the first internal electrode layer 41 and each of the first side surface S1 and the second side surface S2 is zero. The second internal electrode layer 42 reaches each of the first side surface S1 and the second side surface S2. In other words, the distance between the second internal electrode layer 42 and each of the first side surface S1 and the second side surface S2 is zero.

[0029] The dimensions of the multilayer ceramic electronic component 110 are exemplified below. The length dimension of the piezoelectric ceramic portion 70 is preferably 0.8 mm or more and 2 mm or less, more preferably 0.8 mm or more and 1.4 mm or less, and even more preferably 0.8 mm or more and 1.3 mm or less. The lower limit of the width dimension of the piezoelectric ceramic portion 70 is preferably 0.1 mm, more preferably 0.2 mm. The upper limit of the width dimension of the piezoelectric ceramic portion 70 is preferably 1.0 mm, more preferably 0.6 mm. The dimension of each of the first inactive region RN1 and the second inactive region RN2 in the length direction Y is, for example, approximately 0.3 mm. The first inactive width N1 and the second inactive width N2 are each preferably 0.1 mm or more and 0.2 mm or less.

[0030] The thickness of the piezoelectric ceramic part 70 is preferably 0.03 mm or more and 0.15 mm or less. In this way, the thickness of the piezoelectric ceramic part 70 may be smaller than the length and width dimensions, because the function required of the piezoelectric ceramic part 70 as an actuator is displacement in the length direction Y, not displacement in the thickness direction Z.

[0031] (Manufacturing method for multilayer ceramic electronic components) Next, an example of a method for manufacturing the multilayer ceramic electronic component 110 will be described below.

[0032] Green sheets that will become the multiple ceramic layers that make up the piezoelectric ceramic portion 70 are prepared. An electrode paste pattern that will become the first internal electrode layer 41 and the second internal electrode layer 42 is formed on the green sheets. Next, the green sheets are sequentially stacked to form a laminate sheet. An electrode paste pattern is formed on the first main surface M1 of the laminate sheet. This electrode paste pattern forms the first external electrode layer 31 and No. 1 This will become the dummy electrode layer 62. An electrode paste pattern is formed on the second main surface M2 of the laminate sheet. This electrode paste pattern is No. 2 This will become the dummy electrode layer 61.

[0033] Next, the laminate sheet is cut to form the first side surface S1 and the second side surface S2. Next, electrode paste portions corresponding to the first side surface electrode 51 and the second side surface electrode 52 are formed. Specifically, a viscous electrode paste is applied by screen printing to form a viscous electrode paste on the first inactive region RN1 of the first main surface M1. No. 1 a step of causing the electrode paste to flow down from the dummy electrode layer 62 onto the second connection region S2C of the second side surface S2; No. 2 A step of causing the electrode paste to flow down from the dummy electrode layer 61 onto the first connection region S1C of the first side surface S1 is performed.

[0034] Next, the laminate sheet is cut to form the first end face E1 and the second end face E2. This cutting process forms green chips corresponding to the respective multilayer ceramic electronic components 110 from the laminate sheet. These green chips are then fired. Each chip is then subjected to a polarization process. In this manner, the multilayer ceramic electronic component 110 is obtained. Note that, although the above description has been given of a method for forming electrodes by applying an electrode paste, which is generally feasible at low cost, the method for forming electrodes is not limited to this, and for example, sputtering may also be used.

[0035] 6 to 9 are a top view, a bottom view, a left side view, and a right side view, respectively, that schematically show the configuration of a multilayer ceramic electronic component 100 in a comparative example. The multilayer ceramic electronic component 100 (FIGS. 6 to 9) has the same configuration as the first external electrode layer 31, the second external electrode layer 32, the first internal electrode layer 41, the second internal electrode layer 42, the first side electrode 51, the second side electrode 52, and the like in the multilayer ceramic electronic component 110 (FIGS. 2 to 5). No. 2 Dummy electrode layer 61 and No. 1 In place of the dummy electrode layer 62, the first external electrode layer 31C, the second external electrode layer 32C, the first internal electrode layer 41C, the second internal electrode layer 42C, the first side electrode 51C, the second side electrode 52C, No. 2 Dummy electrode layer 61C and No. 1 and a dummy electrode layer 62C.

[0036] The first external electrode layer 31C and the second external electrode layer 32C are disposed on the first main surface M1 and the second main surface M2, respectively. The first external electrode layer 31C reaches the first end face E1 and is separated from the second end face E2. The second external electrode layer 32C is separated from the first end face E1 and reaches the second end face E2. In the XY plane (plan view perpendicular to the thickness direction), the first internal electrode layer 41C and the second external electrode layer 32C have a common shape and a common arrangement, and the second internal electrode layer 42C and the first external electrode layer 31C have a common shape and a common arrangement. The first side surface electrode 51C and the second side surface electrode 52C are disposed on the first end face E1 and the second end face E2, respectively. The first side surface electrode 51C is in contact with the first external electrode layer 31C and the second internal electrode layer 42C. The second side surface electrode 52C is in contact with the second external electrode layer 32C and the first internal electrode layer 41C. No. 1 The dummy electrode layer 62C is disposed on a part of the first main surface M1 and is separated from the first external electrode layer 31C. No. 1 It directly reaches onto the dummy electrode layer 62C. No. 2 The dummy electrode layer 61C is disposed on a part of the second main surface M2 and is separated from the second external electrode layer 32C. No. 2 It directly reaches onto the dummy electrode layer 61C.

[0037] FIG. 10 is a graph showing an example of a simulation result of the relationship between voltage and displacement in each of the example of embodiment 1 (see FIG. 2) and the comparative example (see FIG. 6). The simulation conditions were that the dimensions of the piezoelectric ceramic part 70 were 1.1 mm in the length direction Y, 0.74 mm in the width direction X, and 0.048 mm in the thickness direction Z, and the number of ceramic layers constituting the piezoelectric ceramic part 70 was three. The simulation method employed piezoelectric harmonic analysis using software "Femtet" (registered trademark) manufactured by Murata Software Co., Ltd. As a result of the simulation, for example, the displacement at a voltage of 18.5 V was 242 nm in the example and 191 nm in the comparative example.

[0038] The simulation results of the relationship between the active area ratio and the amount of displacement are shown in Table 1 below.

[0039] [Table 1]

[0040] In the table above, in the column "Side Electrode Arrangement," "Long Side" refers to the use of a multilayer ceramic electronic component 110 (FIGS. 2 to 5) having a side electrode arrangement such as the first side electrode 51 and the second side electrode 52, while "Short Side" refers to the use of a multilayer ceramic electronic component 100 (FIGS. 6 to 9) having a side electrode arrangement such as the first side electrode 51C and the second side electrode 52C. The dimensions are as described in the table above. The columns "Element Length" and "Element Width" indicate the length and width of the model. The "Inactive Width" column corresponds to the first inactive width N1 and the second inactive width N2 in the case of the "Long Side," and corresponds to the element width in the case of the "Short Side." The "Inactive Length" column corresponds to the length of the first inactive region RN1 and the second inactive region RN2 in the case of the "Long Side," and corresponds to the length (dimension in the Y direction) of the exposed portion of the piezoelectric ceramic portion 70 in each of FIGS. 6 and 7 in the case of the "Short Side." In the "Assessment" column, when the displacement amount of Comparative Example 1 is defined as 100%, "A" corresponds to 110% or more, "B" corresponds to more than 100% but less than 110%, and "F" corresponds to 100% or less.

[0041] FIG. 11 is a graph showing an example of a simulation result of the relationship between the active area ratio and the amount of displacement. In the graph, circular markers correspond to the aforementioned "longitudinal side" models (see FIGS. 2 to 5), and triangular markers correspond to the aforementioned "shortitudinal side" models (see FIGS. 6 to 9). Also referring to Table 1, Comparative Example CM1 corresponds to Comparative Example 1, Comparative Examples CM2 and CM3 correspond to Comparative Examples 2 and 3, and Examples EX1 to EX4 correspond to Examples 1 to 4. The dashed line in the graph indicates the amount of displacement of Comparative Example CM1. Therefore, circular markers located above the dashed line correspond to "longitudinal side" models that can generate larger amounts of displacement than the typical "shortitudinal side" models. These results indicate that, compared to the typical "shortitudinal side" models, "longitudinal side" models with an active area ratio of 75% or more can generate larger amounts of displacement, and "longitudinal side" models with an active area ratio of 85% or more can generate significantly larger amounts of displacement.

[0042] (effect) According to the multilayer ceramic electronic component 110 (FIGS. 2 to 5) of this preferred embodiment, the amount of displacement that the multilayer ceramic electronic component 110 can generate can be increased.

[0043] The multilayer ceramic electronic component 110 is an actuator for generating a displacement in the longitudinal direction Y. This allows the large amount of displacement that the multilayer ceramic electronic component 110 can generate to be used as the amount of displacement of the actuator.

[0044] The mounted component 220 included in the assembly 500 (FIG. 1) has a first support portion 221 and a second support portion 222 that support the multilayer ceramic electronic component 110. The mounted component 220 is configured so that the first support portion 221 and the second support portion 222 are relatively displaceable in the longitudinal direction Y. This allows the dimension between the first support portion 221 and the second support portion 222 of the mounted component 220 to be controlled by the multilayer ceramic electronic component 110.

[0045] The first connection region S1C of the first side surface S1 is spaced apart from the first end face E1 and the second end face E2, and the second connection region S2C of the second side surface S2 is spaced apart from the first end face E1 and the second end face E2, thereby allowing the first side surface electrode 51 and the second side surface electrode 52 to be disposed apart from the first end face E1 and the second end face E2.

[0046] The first external electrode layer 31, the second external electrode layer 32, the first internal electrode layer 41, and the second internal electrode layer 42 each reach the first end face E1 and the second end face E2, respectively, which allows the size of the active portion in the longitudinal direction Y, which is the displacement direction, to be increased.

[0047] The first external electrode layer 31, the second external electrode layer 32, the first internal electrode layer 41, and the second internal electrode layer 42 each reach the first side surface S1 and the second side surface S2, respectively. This makes it possible to further reduce the degree to which the displacement of the active portion of the piezoelectric ceramic portion 70 is inhibited by the inactive portion of the piezoelectric ceramic portion 70.

[0048] <Embodiment 2> 12 is a top view schematically illustrating the configuration of a multilayer ceramic electronic component 120 according to the second embodiment. In the multilayer ceramic electronic component 120 (FIG. 12), unlike the multilayer ceramic electronic component 110 (FIG. 2), the shortest distance MS between the first external electrode layer 31 and the second side surface S2 is greater than 0. Here, the shortest distance MS is 10 μm or less. Although not illustrated, similarly, the shortest distance between the second external electrode layer 32 and the first side surface S1 is greater than 0 and 10 μm or less, the distance between each of the first internal electrode layers 41 and the first side surface S1 is greater than 0 and 10 μm or less, and the distance between the second internal electrode layer 42 and the second side surface S2 is greater than 0 and 10 μm or less. Preferably, the shortest distance MS is 5 μm or less, the shortest distance between the second external electrode layer 32 and the first side surface S1 is 5 μm or less, and the distance between the first internal electrode layer 41 and the first side surface S1 is 5 μm or less, and the distance between the second internal electrode layer 42 and the second side surface S2 is 5 μm or less.

[0049] According to this embodiment, the piezoelectric ceramic part 70 covers the first internal electrode layer 41 at the first side surface S1. This prevents unintended current leakage from the first internal electrode layer 41 on the first side surface S1. Similarly, the piezoelectric ceramic part 70 covers the second internal electrode layer 42 at the second side surface S2. This prevents unintended current leakage from the second internal electrode layer 42 on the second side surface S2. If the shortest distance MS were excessively large, the degree to which the displacement of the active portion of the piezoelectric ceramic part 70 is inhibited by the inactive portion of the piezoelectric ceramic part 70 would also be excessively large. According to this embodiment, since the shortest distance MS is 10 μm or less, this adverse effect can be suppressed.

[0050] 13 is a top view schematically illustrating a configuration of a multilayer ceramic electronic component 121 according to a first modified example of the second embodiment. The multilayer ceramic electronic component 121 (FIG. 13) differs from the multilayer ceramic electronic component 110 (FIG. 2) in that the shortest distance ME between the first external electrode layer 31 and each of the first end face E1 and the second end face E2 is greater than 0. Here, the shortest distance ME is 10 μm or less. Although not illustrated, similarly, the shortest distance between the second external electrode layer 32 and each of the first end face E1 and the second end face E2 is greater than 0 and 10 μm or less, the shortest distance between the first internal electrode layer 41 and each of the first end face E1 and the second end face E2 is greater than 0 and 10 μm or less, and the shortest distance between the second internal electrode layer 42 and each of the first end face E1 and the second end face E2 is greater than 0 and 10 μm or less. Preferably, the shortest distance ME is 5 μm or less, the shortest distance between the second external electrode layer 32 and each of the first end face E1 and the second end face E2 is 5 μm or less, and the shortest distance between the first internal electrode layer 41 and each of the first end face E1 and the second end face E2 is 5 μm or less, and the shortest distance between the second internal electrode layer 42 and each of the first end face E1 and the second end face E2 is 5 μm or less.

[0051] According to this modification, the piezoelectric ceramic part 70 covers the first internal electrode layer 41 and the second internal electrode layer 42 at the first end face E1 and the second end face E2. This prevents unintended current leakage from the first internal electrode layer 41 and the second internal electrode layer 42 on the first end face E1 and the second end face E2. If the shortest distance ME were excessively large, the dimension of the active portion in the longitudinal direction Y, which is the displacement direction, would be excessively sacrificed. According to this embodiment, since the shortest distance ME is 10 μm or less, such adverse effects can be suppressed.

[0052] 14 is a top view schematically showing the configuration of a multilayer ceramic electronic component 122 according to a second modification of embodiment 2. This modification has both the features of embodiment 2 and the features of the first modification.

[0053] <Third Embodiment> FIG. 15 is a top view schematically illustrating the configuration of a multilayer ceramic electronic component 130 according to the third embodiment. In a plan view, the first inactive region RN1 and the first external electrode layer 31 are in contact with each other along a first boundary line LB. The first boundary line LB does not include a straight line perpendicular to the longitudinal direction Y. In this embodiment, the first boundary line LB is formed only by curves, and preferably the same is true for the second boundary line. In the example illustrated in FIG. 15, this curve is an arc with a central angle of 180 degrees, in other words, a semicircle. As a modification, the central angle of the arc may be an angle other than 180 degrees, and in that case, the central angle is preferably less than 180 degrees. As another modification, an elliptical arc may be used instead of a circular arc.

[0054] The second inactive region RN2 and the second external electrode layer 32 are in contact with each other along a second boundary line (not shown). Preferably, the second boundary line also has the characteristics of the first boundary line LB described above. Note that a configuration in which the first boundary line LB does not have this characteristic but the second boundary line does may also be used.

[0055] Note that the configuration other than that described above is substantially the same as that of the above-mentioned embodiment 1, embodiment 2 or their modified examples, and therefore the same or corresponding elements are given the same reference numerals and their description will not be repeated.

[0056] 16 and 17 are graphs showing the distribution of the inactive length (the dimension of the first inactive region RN1 in the Y direction) in the multilayer ceramic electronic component 130 (FIG. 15: Embodiment 3) and the multilayer ceramic electronic component 110 (FIG. 2: Embodiment 1), respectively. In the graphs, the position of X=0 corresponds to the second side surface S2, and the position of the dot corresponds to the innermost position of the first inactive region RN1 in the width direction X on the first main surface M1. According to Embodiment 3, unlike Embodiment 1 described above, the inactive length decreases with increasing distance from the second side surface. This decrease is continuous. Furthermore, according to Embodiment 3, unlike Embodiment 1 described above, the inactive length converges to zero at the innermost position of the first inactive region RN1 (the position of the dot in FIG. 16).

[0057] According to this embodiment, it is possible to reduce stress concentration in the vicinity of the first boundary line LB.

[0058] FIG. 18 is a top view schematically illustrating a configuration of a multilayer ceramic electronic component 131 according to a first modification of the third embodiment. The first boundary line LB has a straight line portion LBX and a straight line portion LBS. The straight line portion LBS is inclined with respect to both the longitudinal direction Y and the width direction X (a direction perpendicular to the longitudinal direction Y). The straight line portion LBX is aligned with the longitudinal direction Y. In the example illustrated in FIG. 18, the shape of the region surrounded by the second side surface S2 and the first boundary line LB is a trapezoid. Preferably, the second boundary line also has a similar characteristic. Note that a configuration in which the first boundary line LB does not have this characteristic but the second boundary line does may also be used. Furthermore, if the area of ​​the first inactive region RN1 (and the second inactive region RN2) can be small, the straight line portion LBX aligned with the direction Y may be omitted, so that the shape of the first inactive region RN1 (and the second inactive region RN2) is triangular rather than trapezoidal.

[0059] 19 is a graph showing the distribution of inactive lengths in the multilayer ceramic electronic component 131 of FIG. 18. In the graph, the position of X=0 corresponds to the second side surface S2, and the position of the dot corresponds to the innermost position of the first inactive region RN1 in the width direction X on the first main surface M1. According to this modification, unlike the first embodiment described above, the inactive length decreases with increasing distance from the second side surface. This decrease is continuous.

[0060] FIG. 20 is a top view schematically illustrating the configuration of a multilayer ceramic electronic component 132 according to a second modified example of the third embodiment. In a plan view, the first boundary line LB includes a first straight line portion LB1, a second straight line portion LB2, and an intermediate portion LB0. The first straight line portion LB1 is perpendicular to the longitudinal direction Y. The second straight line portion LB2 is perpendicular to the longitudinal direction Y and is spaced apart from the first straight line portion LB1. The intermediate portion LB0 has a first end connected to the first straight line portion LB1 and a second end connected to the second straight line portion LB2, and does not include a straight line portion perpendicular to the longitudinal direction Y. The first straight line portion LB1 extends from the first end of the intermediate portion LB0 to the left in the figure, and the second straight line portion LB2 extends from the intermediate portion LB0 to the right in the figure. LB0 The direction in which the first linear portion LB1 extends from the first end of the interposed portion LB0 is the right direction in the drawing. LB0 and the direction in which the second end of the first electrode extends are opposite to each other.

[0061] 21 is a graph showing the distribution of inactive lengths in the multilayer ceramic electronic component 132 of FIG. 20. In the graph, the position of X=0 corresponds to the second side surface S2, and the position of the dot corresponds to the innermost position of the first inactive region RN1 in the width direction X on the first main surface M1. According to this modification, unlike the first embodiment described above, the inactive length decreases with increasing distance from the second side surface. This decrease is discontinuous.

[0062] 22 and 23 are contour and vector diagrams, respectively, showing an example of simulation results of stress distribution near the inactive region of the multilayer ceramic electronic component 110 (FIG. 2) under piezoelectric displacement. Simulation conditions included dimensions of the piezoelectric ceramic portion 70 of 1.1 mm in the length direction Y, 0.74 mm in the width direction X, and 0.048 mm in the thickness direction Z, with three ceramic layers constituting the piezoelectric ceramic portion 70. The simulation method employed piezoelectric harmonic analysis using software "Femtet" (registered trademark) manufactured by Murata Software Co., Ltd. In FIG. 22, positive values ​​correspond to tensile stress, and negative values ​​correspond to compressive stress. The rectangle indicated by the black line in the figure corresponds to the first inactive region RN1. In this simulation, a maximum stress of 55 MPa occurred near the center of the right short side of the rectangle.

[0063] 24 and 25 are contour and vector diagrams showing an example of the simulation results of stress distribution near the inactive region of the multilayer ceramic electronic component 130 (FIG. 15) under piezoelectric displacement. The simulation method for the cases of FIGS. 24 and 25 is the same as that of FIG. 2. 2 and Figure 2 3 The simulation method is the same as that in the case of Fig. 24 and Fig. 25. 2 and Figure 2 3 As shown in the figure, the simulation conditions for the case (1) differ from those for the case (2), except for the electrode layer pattern conditions, while the other conditions are the same. In FIG. 24, positive values ​​correspond to tensile stress, and negative values ​​correspond to compressive stress. In the figure, the semicircle indicated by the black line corresponds to the first inactive region RN1. In this simulation, a maximum stress of 45 MPa occurs near the center of the left side of the arc.

[0064] From the results of the two simulations above, the maximum stress in the multilayer ceramic electronic component 110 (FIG. 2) is 55 MPa, and the maximum stress in the multilayer ceramic electronic component 130 (FIG. 15) is 45 MPa. This shows that the latter can reduce the maximum stress under piezoelectric displacement compared to the former.

[0065] The above-described embodiments and modifications may be freely combined with each other. Although the present invention has been described in detail, the above description is illustrative in all respects and does not limit the present invention. It is understood that countless modifications not illustrated can be envisioned without departing from the scope of the present invention. [Explanation of symbols]

[0066] 31: First external electrode layer 32: Second external electrode layer 41: First internal electrode layer 42: Second internal electrode layer 51: 1st side electrode 52: 2nd side electrode 61: Second dummy electrode layer 62: First dummy electrode layer 70: Piezoelectric ceramic part 110, 120-122, 130-132: Multilayer ceramic electronic components 220: Mounted parts 221: 1st support part 222:Second support part 500: Assembly E1: 1st end surface E2: 2nd end face LB: 1st boundary line LB0: Interposition part LB1: 1st straight section LB2: 2nd straight section LBS: Straight section LBX: Straight section M1: First main surface M2: 2nd principal surface RN1: 1st inactive region RN2: 2nd inactive region S1: 1st side S1C: First connection area S1N: First unconnected area S2: 2nd side S2C: Second connection area S2N: Second unconnected region

Claims

1. A multilayer ceramic electronic component, The piezoelectric ceramic portion includes: a first main surface and a second main surface opposite to each other in a thickness direction; a first end surface and a second end surface that are opposite to each other in a first direction different from the thickness direction; a first side surface and a second side surface that are opposite to each other in a thickness direction and a second direction different from the first direction; a first dimension in the first direction and a second dimension in the second direction; the first dimension is greater than the second dimension, and the multilayer ceramic electronic component further comprises: a first external electrode layer disposed on the first main surface; a second external electrode layer disposed on the second main surface; a first internal electrode layer disposed between the first external electrode layer and the second external electrode layer in the piezoelectric ceramic portion; a second internal electrode layer disposed between the second external electrode layer and the first internal electrode layer in the piezoelectric ceramic portion; a first side electrode that connects the first external electrode layer and the second internal electrode layer to each other on the first side surface and is spaced apart from the first internal electrode layer; a second side electrode that connects the second external electrode layer and the first internal electrode layer to each other on the second side surface and is spaced apart from the second internal electrode layer; Equipped with in a two-dimensional layout including the first direction and the second direction, a ratio of an overlapping portion of all of a region where the first external electrode layer and the first internal electrode layer overlap, a region where the first internal electrode layer and the second internal electrode layer overlap, and a region where the second external electrode layer and the second internal electrode layer overlap is 75% or more with respect to a region where the piezoelectric ceramic portion is arranged, a first main surface including a first inactive region separating the first external electrode layer and the second side electrode, and a second main surface including a second inactive region separating the second external electrode layer and the first side electrode.

2. 2. The multilayer ceramic electronic component according to claim 1, a first dummy electrode layer disposed on the first inactive region of the first main surface and spaced apart from the first external electrode layer; a second dummy electrode layer disposed on the second inactive region of the second main surface and spaced apart from the second external electrode layer; The multilayer ceramic electronic component further comprises at least one of the above.

3. 3. The multilayer ceramic electronic component according to claim 1, A multilayer ceramic electronic component in which, in a plan view, the first inactive region and the first external electrode layer are in contact with each other along a first boundary line, and the second inactive region and the second external electrode layer are in contact with each other along a second boundary line, and at least one of the first boundary line and the second boundary line does not include a straight line portion perpendicular to the first direction.

4. 4. The multilayer ceramic electronic component according to claim 3, At least one of the first boundary line and the second boundary line is formed entirely of curved lines.

5. 4. The multilayer ceramic electronic component according to claim 3, At least one of the first boundary line and the second boundary line includes a straight line portion inclined from both the first direction and a direction orthogonal to the first direction.

6. 3. The multilayer ceramic electronic component according to claim 1, In a plan view, the first inactive region and the first external electrode layer are in contact with each other along a first boundary line, the second inactive region and the second external electrode layer are in contact with each other along a second boundary line, and at least one of the first boundary line and the second boundary line is a first linear portion perpendicular to the first direction; a second linear portion perpendicular to the first direction and spaced apart from the first linear portion; an intermediate portion having a first end connected to the first linear portion and a second end connected to the second linear portion, the intermediate portion not including a linear portion perpendicular to the first direction; Including, a direction in which the first linear portion extends from the first end of the interposed portion and a direction in which the second linear portion extends from the second end of the interposed portion are opposite to each other.

7. 7. The multilayer ceramic electronic component according to claim 1, the first side has a first non-connection region and a first connection region; the first side surface electrode is disposed on the first connection region of the first side surface, away from the first non-connection region of the first side surface; The multilayer ceramic electronic component, wherein the first non-connection region on the first side surface has a portion that separates the first side surface electrode and the first internal electrode layer from each other in the first direction.

8. A multilayer ceramic electronic component, The piezoelectric ceramic portion includes: a first main surface and a second main surface opposite to each other in a thickness direction; a first end surface and a second end surface that are opposite to each other in a first direction different from the thickness direction; a first side surface and a second side surface that are opposite to each other in a thickness direction and a second direction different from the first direction; a first dimension in the first direction and a second dimension in the second direction; the first dimension is greater than the second dimension, and the multilayer ceramic electronic component further comprises: a first external electrode layer disposed on the first main surface; a second external electrode layer disposed on the second main surface; a first internal electrode layer disposed between the first external electrode layer and the second external electrode layer in the piezoelectric ceramic portion; a second internal electrode layer disposed between the second external electrode layer and the first internal electrode layer in the piezoelectric ceramic portion; a first side electrode that connects the first external electrode layer and the second internal electrode layer to each other on the first side surface and is spaced apart from the first internal electrode layer; a second side electrode that connects the second external electrode layer and the first internal electrode layer to each other on the second side surface and is spaced apart from the second internal electrode layer; Equipped with in a two-dimensional layout including the first direction and the second direction, a ratio of an overlapping portion of all of a region where the first external electrode layer and the first internal electrode layer overlap, a region where the first internal electrode layer and the second internal electrode layer overlap, and a region where the second external electrode layer and the second internal electrode layer overlap is 75% or more with respect to a region where the piezoelectric ceramic portion is arranged, the first side has a first non-connection region and a first connection region; the first side surface electrode is disposed on the first connection region of the first side surface, away from the first non-connection region of the first side surface; The multilayer ceramic electronic component, wherein the first non-connection region on the first side surface has a portion that separates the first side surface electrode and the first internal electrode layer from each other in the first direction.

9. 9. The multilayer ceramic electronic component according to claim 1, The ratio is 85% or more.

10. 10. The multilayer ceramic electronic component according to claim 1, The multilayer ceramic electronic component, wherein each of the first side electrode and the second side electrode has a dimension in the first direction that is 2.5% to 25% of the first dimension.

11. 11. The multilayer ceramic electronic component according to claim 1, In the two-dimensional layout, the first side electrode and the second side electrode are provided symmetrically to each other on the piezoelectric ceramic portion.

12. 12. The multilayer ceramic electronic component according to claim 1, the first side electrode and the second side electrode are spaced apart from the first end face and the second end face.

13. 13. The multilayer ceramic electronic component according to claim 1, a shortest distance between the first external electrode layer and each of the first end faces and the second end faces is 0 to 10 μm, a shortest distance between the second external electrode layer and each of the first end faces and the second end faces is 0 to 10 μm, a shortest distance between the first internal electrode layer and each of the first end faces and the second end faces is 0 to 10 μm, and a shortest distance between the second internal electrode layer and each of the first end faces and the second end faces is 0 to 10 μm.

14. 14. The multilayer ceramic electronic component according to claim 1, the first external electrode layer reaches each of the first end face and the second end face, the second external electrode layer reaches each of the first end face and the second end face, the first internal electrode layer reaches each of the first end face and the second end face, and the second internal electrode layer reaches each of the first end face and the second end face.

15. 15. The multilayer ceramic electronic component according to claim 1, a multilayer ceramic electronic component, wherein the shortest distance between the first external electrode layer and the second side surface is 0 to 10 μm, the shortest distance between the second external electrode layer and the first side surface is 0 to 10 μm, the distance between the second internal electrode layer and the second side surface is 0 to 10 μm, and the distance between the first internal electrode layer and the first side surface is 0 to 10 μm.

16. 16. A multilayer ceramic electronic component according to claim 1, a multilayer ceramic electronic component, wherein the first external electrode layer reaches each of the first side surface and the second side surface, the second external electrode layer reaches each of the first side surface and the second side surface, the first internal electrode layer reaches each of the first side surface and the second side surface, and the second internal electrode layer reaches each of the first side surface and the second side surface.

17. 17. The multilayer ceramic electronic component according to claim 1, The laminated ceramic electronic component is an actuator for generating a displacement in the first direction.

18. The multilayer ceramic electronic component according to any one of claims 1 to 17, a mounted component on which the multilayer ceramic electronic component is mounted; Equipped with the mounted component has a first support portion and a second support portion that support the multilayer ceramic electronic component, and the mounted component is configured so that the first support portion and the second support portion are relatively displaceable in the first direction.

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