Array type multilayer ceramic capacitor

Abstract

An array type laminated ceramic capacitor comprises a laminated brick and a plurality of terminal electrode pairs. The laminated brick comprises a ceramic body and a plurality of inner electrode groups. The ceramic body is provided with an upper surface, a lower surface, a first end face and a second end face, each inner electrode group comprises a plurality of first and second inner electrodes which are alternated with each other. The first and second inner electrodes extend from the first and second end surfaces, respectively. The first and second internal electrodes each include a first portion and a second portion in contact with each other. The first part comprises first to fourth side surfaces which are connected in sequence. The first to third side surfaces are respectively exposed from the upper surface, the first or second end surface and the lower surface. The second part is not exposed. And the end electrode pairs are correspondingly arranged on the inner electrode groups. Each terminal electrode pair comprises a first terminal electrode and a second terminal electrode. The first and second terminal electrodes respectively extend to cover the first to third side surfaces of the first portions of the first and second internal electrodes. The terminal electrodes of the capacitor units can be formed by electroplating simultaneously based on the exposed parts of the inner electrodes, so that the miniaturization of the array type multilayer ceramic capacitor can be achieved.

Description

Technical Field

[0001] This disclosure relates to a technique for manufacturing passive components, and more particularly to an array-type multilayer ceramic capacitor. Background Technology

[0002] The architecture of a multilayer ceramic capacitor can include multilayer bricks and two terminal electrodes covering the two end faces of the multilayer bricks. Currently, the terminal electrodes are mostly fabricated by first dipping the two end faces of the multilayer bricks into molten metal to form the first metal layer, and then plating on other metal layers that facilitate soldering. However, when this terminal electrode fabrication technology is applied to the fabrication of array-type multilayer ceramic capacitors, it cannot meet the miniaturization requirements of array-type multilayer ceramic capacitors due to the limitations of copper paste coating processes.

[0003] Furthermore, the resulting terminal electrodes exhibit high surface roughness and poor thickness uniformity. When multilayer ceramic capacitors are embedded in the package architecture, the high surface roughness and low thickness uniformity of the terminal electrodes lead to a decrease in the bonding reliability between the terminal electrodes and the dielectric windows of the lines connecting the terminal electrodes and other layers of the package structure, thereby affecting the package yield. Summary of the Invention

[0004] Therefore, the purpose of this disclosure is to provide an array-type multilayer ceramic capacitor that is not limited by the traditional copper paste coating process, and simultaneously forms the terminal electrodes of each capacitor unit of the array-type multilayer ceramic capacitor, thereby achieving the miniaturization requirement of the array-type multilayer ceramic capacitor.

[0005] In accordance with the aforementioned objectives of this disclosure, an array-type multilayer ceramic capacitor is proposed. This array-type multilayer ceramic capacitor includes multilayer bricks and multiple terminal electrode pairs. Each multilayer brick includes a ceramic body and multiple internal electrode groups. The ceramic body has an upper surface and a lower surface, and first end faces and second end faces opposite each other. The first end faces and second end faces are located between the upper and lower surfaces. Multiple internal electrode groups are substantially spaced apart from each other and embedded in the ceramic body. Each internal electrode group includes multiple first internal electrodes and multiple second internal electrodes. In each internal electrode group, these first and second internal electrodes alternate and are substantially spaced apart. The first internal electrode extends from the first end face toward the second end face and is spaced apart from the second end face. The second internal electrode extends from the second end face toward the first end face and is spaced apart from the first end face. Each first and second internal electrode includes a first portion and a second portion. The first portion includes a first side face, a second side face, a third side face, and a fourth side face connected in sequence. The first side face, the second side face, and the third side face are exposed on the upper surface, the first or second end face, and the lower surface, respectively. The second part joins the fourth side of the first part, and the second part is completely embedded in the ceramic body and not exposed. Multiple end electrode pairs are respectively disposed on the aforementioned inner electrode group and spaced apart from each other. Each end electrode pair includes a first end electrode and a second end electrode. The first end electrode extends to cover the first side, second side, and third side of the first part of the first inner electrode of the corresponding inner electrode group. The second end electrode extends to cover the first side, second side, and third side of the first part of the second inner electrode.

[0006] According to one embodiment of the present disclosure, the aforementioned internal electrode group includes an equal number of first internal electrodes and an equal number of second internal electrodes.

[0007] According to one embodiment of the present disclosure, the aforementioned internal electrode group includes a different number of first internal electrodes and a different number of second internal electrodes.

[0008] According to one embodiment of the present disclosure, the aforementioned portion of the inner electrode group includes an equal number of first inner electrodes and an equal number of second inner electrodes, while the number of first inner electrodes and the number of second inner electrodes in each of the other portion of the inner electrode group differ from those in the aforementioned portion of the inner electrode group.

[0009] According to one embodiment of the present disclosure, these internal electrode groups are divided into multiple groups, and each group of internal electrode groups includes the same number of first internal electrodes and the same number of second internal electrodes.

[0010] According to one embodiment of the present disclosure, each inner electrode group of each group contains a different number of first inner electrodes and a different number of second inner electrodes than each inner electrode group of other groups.

[0011] According to one embodiment of the present disclosure, the first and second end electrodes of each end electrode pair each include an electroplated copper structure.

[0012] According to one embodiment of the present disclosure, each of the first inner electrode and the second inner electrode is T-shaped.

[0013] According to one embodiment of the present disclosure, each internal electrode group, the corresponding end electrode pair, and the portion of the ceramic body between the corresponding end electrode pair constitute a capacitor unit, and the architecture of these capacitor units is identical to that of each other.

[0014] According to one embodiment of the present disclosure, each internal electrode group, the corresponding end electrode pair, and the portion of the ceramic body between the corresponding end electrode pairs constitute a capacitor unit, and the architectures of these capacitor units are different from each other.

[0015] As described in the above embodiments, the array-type multilayer ceramic capacitor disclosed herein comprises multiple internal electrode groups, and the three sides of the first internal electrode and the first portion of the second internal electrode of each internal electrode group are exposed on the upper surface, end face, and lower surface of the ceramic body. Therefore, based on the exposed portions of each internal electrode group, end electrodes can be grown on the two end faces of the ceramic body and the regions adjacent to the upper and lower surfaces of these two end faces using electroplating. Since the end electrodes of each internal electrode group are fabricated using electroplating, the end electrodes of each capacitor unit of the array-type multilayer ceramic capacitor can be formed simultaneously, achieving miniaturization of the array-type multilayer ceramic capacitor. Furthermore, the electroplated end electrodes have low surface roughness and uniform thickness, which is beneficial for the application of the array-type multilayer ceramic capacitor in embedded packaging architectures. Attached Figure Description

[0016] A better understanding of the features disclosed herein can be obtained from the following detailed description taken in conjunction with the accompanying drawings. It should be noted that, according to industry standard practice, the features are not drawn to scale. In fact, the dimensions of the features can be arbitrarily increased or decreased for clarity of discussion.

[0017] Figure 1 A three-dimensional schematic diagram is provided to illustrate an array-type multilayer ceramic capacitor according to the first embodiment of this disclosure.

[0018] Figure 2 This is a side view schematic diagram illustrating an arrayed multilayer ceramic capacitor according to the first embodiment of the present disclosure.

[0019] Figure 3 A three-dimensional schematic diagram illustrating the multilayer bricks of an array-type multilayer ceramic capacitor according to the first embodiment of this disclosure.

[0020] Figure 4 This is a perspective view illustrating the multilayer bricks of an array-type multilayer ceramic capacitor according to the first embodiment of this disclosure.

[0021] Figure 5A side view schematic diagram illustrating a first internal electrode according to a first embodiment of the present disclosure.

[0022] Figure 6 A side view schematic diagram illustrating a second internal electrode according to the first embodiment of this disclosure.

[0023] Figure 7 This is a top view schematic diagram illustrating an array-type multilayer ceramic capacitor according to a second embodiment of the present disclosure.

[0024] Figure 8 This is a top view schematic diagram illustrating an array-type multilayer ceramic capacitor according to a third embodiment of the present disclosure.

[0025] Figure 9 This is a top view schematic diagram illustrating an array-type multilayer ceramic capacitor according to the fourth embodiment of this disclosure. Detailed Implementation

[0026] The embodiments of this disclosure are discussed in detail below. However, it will be understood that the embodiments provide many applicable concepts that can be implemented in a wide variety of specific situations. The embodiments discussed and disclosed are for illustrative purposes only and are not intended to limit the scope of this disclosure. All embodiments of this disclosure reveal a variety of different features, but these features can be implemented individually or in combination as needed.

[0027] Furthermore, the terms "first," "second," etc., used in this article do not specifically refer to order or sequence; they are merely used to distinguish elements or operations described using the same technical terms.

[0028] The spatial relationship between the two elements described in this disclosure applies not only to the orientation shown in the accompanying drawings, but also to orientations not shown in the drawings, such as inverted orientations. Furthermore, the terms "connection," "electrical connection," or similar expressions used in this disclosure to refer to two components are not limited to a direct or electrical connection, but may also include indirect or electrical connections as needed.

[0029] This disclosure allows for the integration of multiple capacitor units within a multilayer brick to meet various application requirements. These capacitor units may have the same or different capacitance values; or some capacitor units may have the same capacitance value, while others may have different capacitance values.

[0030] Please refer to Figures 1 to 4The figures illustrate, respectively, a perspective view and a side view of an array-type multilayer ceramic capacitor 100 according to the first embodiment of the present disclosure, and a perspective view and a perspective view of the multilayer bricks 200 of the array-type multilayer ceramic capacitor 100. The array-type multilayer ceramic capacitor 100 is composed of multiple capacitor units arranged in an array. The array-type multilayer ceramic capacitor 100 mainly includes multilayer bricks 200 and multiple terminal electrode pairs 300, 310, 320, and 330.

[0031] The laminated brick 200 can be a cubic structure such as a cuboid or cube. The shape of the laminated brick 200 can be designed according to product requirements, and this disclosure is not limited thereto. Figure 1 In the illustrated embodiment, the laminated brick 200 is a cuboid. For example... Figure 3 and Figure 4 As shown, the laminated brick 200 mainly comprises a ceramic body 210 and multiple internal electrode groups 220, 230, 240, and 250. The internal electrode groups 220, 230, 240, and 250 are embedded in the ceramic body 210 and are physically separated from each other. Internal electrode group 220 includes multiple first internal electrodes 222 and multiple second internal electrodes 224. Internal electrode group 230 includes multiple first internal electrodes 232 and multiple second internal electrodes 234. Internal electrode group 240 includes multiple first internal electrodes 242 and multiple second internal electrodes 244. Internal electrode group 250 includes multiple first internal electrodes 252 and multiple second internal electrodes 254.

[0032] When manufacturing the laminated brick 200, multiple ceramic blanks can be sequentially and alternately stacked with inner electrode groups 220, 230, 240, and 250 to form a laminated structure, which is then sintered. Taking the inner electrode group 220 as an example, a first inner electrode 222, a ceramic blank, a second inner electrode 224, another ceramic blank, a first inner electrode 222, a ceramic blank, a second inner electrode 224, and another ceramic blank can be sequentially stacked on the ceramic blank. Subsequently, according to the stacking method of the inner electrode group 220 and the ceramic blank, the ceramic blanks are sequentially stacked with the first inner electrode 232 and the second inner electrode 234 of the inner electrode group 230, the first inner electrode 242 and the second inner electrode 244 of the inner electrode group 240, and the first inner electrode 252 and the second inner electrode 254 of the inner electrode group 250. The ceramic body 210 is formed by sintering these ceramic blanks.

[0033] exist Figure 3In the illustrated embodiment, the ceramic body 210 is a cuboid with six faces. Specifically, the ceramic body 210 may have an upper surface 211 and a lower surface 212, a first end face 213 and a second end face 214 opposite to each other, and a first side face 215 and a second side face 216 opposite to each other. The first end face 213, the second end face 214, the first side face 215, and the second side face 216 are all located between the upper surface 211 and the lower surface 212. Furthermore, the first side face 215 and the second side face 216 are located between the first end face 213 and the second end face 214.

[0034] like Figure 4 As shown, the first internal electrodes 222, 232, 242, and 252, and the second internal electrodes 224, 234, 244, and 254 are all sheet-like structures. Each of the first internal electrodes 222, 232, 242, and 252 extends from the first end face 213 of the ceramic body 210 toward the second end face 214, and is spaced apart from the second end face 214. Each of the second internal electrodes 224, 234, 244, and 254 extends from the second end face 214 of the ceramic body 210 toward the first end face 213, and is spaced apart from the first end face 213. The number of the first internal electrodes 222, 232, 242, and 252 may be the same as or different from the number of the second internal electrodes 224, 234, 244, and 254. For example... The number of the first internal electrodes 222, 232, 242, and 252 can be one more than the number of the second internal electrodes 224, 234, 244, and 254, and vice versa.

[0035] Please refer to the following at the same time Figure 4 and Figure 5 ,in Figure 5 This is a side view schematic diagram illustrating a first internal electrode 222, 232, 242, and 252 according to a first embodiment of the present disclosure. Each first internal electrode 222 of the internal electrode group 220 includes a first portion 222a and a second portion 222b that are engaged with each other. Each first internal electrode 232 of the internal electrode group 230 includes a first portion 232a and a second portion 232b that are engaged with each other. Each first internal electrode 242 of the internal electrode group 240 includes a first portion 242a and a second portion 242b that are engaged with each other. Each first internal electrode 252 of the internal electrode group 250 includes a first portion 252a and a second portion 252b that are engaged with each other.

[0036] The first parts 222a, 232a, 242a, and 252a can be square or rectangular sheet structures. Each first part 222a, 232a, 242a, and 252a includes a first side surface S11, a second side surface S12, a third side surface S13, and a fourth side surface S14 connected in sequence. The first side surface S11, the second side surface S12, and the third side surface S13 are respectively located in the upper surface 211, the first end face 213, and the lower surface 212 of the ceramic body 210. Therefore, as Figure 4 As shown, the first side surface S11, the second side surface S12, and the third side surface S13 are exposed on the upper surface 211, the first end face 213, and the lower surface 212 of the ceramic body 210, respectively.

[0037] The second parts 222b, 232b, 242b, and 252b are respectively joined to the fourth side surface S14 of the first parts 222a, 232a, 242a, and 252a. The second parts 222b, 232b, 242b, and 252b extend from the fourth side surface S14 of the first parts 222a, 232a, 242a, and 252a toward the second end face 214, but are spaced apart from the second end face 214. The second parts 222b, 232b, 242b, and 252b can all be square or rectangular sheet structures. The height of the second parts 222b, 232b, 242b, and 252b is smaller than the height of the first parts 222a, 232a, 242a, and 252a to which they are joined, and they are completely embedded within the ceramic body 210 and not exposed.

[0038] Please refer to the following at the same time Figure 4 and Figure 6 ,in Figure 6 This is a side view schematic diagram illustrating a second internal electrode 224, 234, 244, and 254 according to a first embodiment of the present disclosure. Each second internal electrode 224 of internal electrode group 220 includes a first portion 224a and a second portion 224b that are engaged with each other. Each second internal electrode 234 of internal electrode group 230 includes a first portion 234a and a second portion 234b that are engaged with each other. Each second internal electrode 244 of internal electrode group 240 includes a first portion 244a and a second portion 244b that are engaged with each other. Each second internal electrode 254 of internal electrode group 250 includes a first portion 254a and a second portion 254b that are engaged with each other.

[0039] The first parts 224a, 234a, 244a, and 254a can also be square or rectangular sheet structures. Each first part 224a, 234a, 244a, and 254a includes a first side surface S21, a second side surface S22, a third side surface S23, and a fourth side surface S24 connected in sequence. The first side surface S21, the second side surface S22, and the third side surface S23 are respectively located in the upper surface 211, the second end surface 214, and the lower surface 212 of the ceramic body 210. Therefore, as Figure 4 As shown, the first side surface S21, the second side surface S22, and the third side surface S23 are exposed on the upper surface 211, the second end surface 214, and the lower surface 212 of the ceramic body 210, respectively.

[0040] The second portions 224b, 234b, 244b, and 254b are respectively joined to the fourth side surface S24 of the first portions 224a, 234a, 244a, and 254a. The second portions 224b, 234b, 244b, and 254b extend from the fourth side surface S24 of the first portions 224a, 234a, 244a, and 254a toward the first end face 213, but are spaced apart from the first end face 213. The second portions 224b, 234b, 244b, and 254b can all be square or rectangular sheet structures. The second portions 224b, 234b, 244b, and 254b are narrower than the first portions 224a, 234a, 244a, and 254a to which they are joined, and are completely embedded within the ceramic body 210 without being exposed.

[0041] In some embodiments, the first inner electrodes 222, 232, 242, and 252 are mirror images of the second inner electrodes 224, 234, 244, and 254. That is, the second inner electrodes 224, 234, 244, and 254 can be completely overlapped with the first inner electrodes 222, 232, 242, and 252 after being rotated 180 degrees. However, the first inner electrodes 222, 232, 242, and 252 can also be asymmetrical with the second inner electrodes 224, 234, 244, and 254, and this disclosure is not limited thereto. In some embodiments, the shapes of the first inner electrodes 222, 232, 242, and 252 and the second inner electrodes 224, 234, 244, and 254 can all be T-shaped. In some embodiments, the upper surface 211 and the lower surface 212 are parallel to each other, and the first inner electrodes 222, 232, 242, and 252 and the second inner electrodes 224, 234, 244, and 254 are substantially perpendicular to the upper surface 211 and the lower surface 212. For example, the materials of the first inner electrodes 222, 232, 242, and 252 and the second inner electrodes 224, 234, 244, and 254 may be copper, silver, or nickel.

[0042] In this embodiment, inner electrode groups 220, 230, 240, and 250 contain the same number of inner electrodes. Specifically, the number of first inner electrodes 222 in inner electrode group 220 is the same as the number of first inner electrodes 232 in inner electrode group 230, the number of first inner electrodes 242 in inner electrode group 240, and the number of first inner electrodes 252 in inner electrode group 250, and the number of second inner electrodes 224 in inner electrode group 220 is the same as the number of second inner electrodes 234 in inner electrode group 230, the number of second inner electrodes 244 in inner electrode group 240, and the number of second inner electrodes 254 in inner electrode group 250.

[0043] Please refer to the following at the same time Figure 1 and Figure 3 Multiple end electrode pairs 300, 310, 320, and 330 are respectively disposed on inner electrode groups 220, 230, 240, and 250, and these end electrode pairs 300, 310, 320, and 330 are spaced apart from each other. End electrode pair 300 includes a first end electrode 302 and a second end electrode 304. For example... Figure 1 and Figure 4 As shown, the first end electrode 302 extends from the upper surface 211 of the ceramic body 210, through the first end face 213, to the lower surface 212, and extends to cover the first side surface S11, the second side surface S12, and the third side surface S13 of the first portion 222a of the first inner electrode 222 of the inner electrode group 220. Figure 2 As shown, the side view of the first end electrode 302 is shaped like an inverted C.

[0044] The second end electrode 304 extends from the upper surface 211 of the ceramic body 210, through the second end face 214, to the lower surface 212, and extends to cover the first side surface S21, the second side surface S22, and the third side surface S23 of the first portion 224a of the second inner electrode 224 of the inner electrode assembly 220. For example... Figure 2 As shown, the second end electrode 304 has a C-shaped side view. The second end electrode 304 and the first end electrode 302 are opposite to each other and are physically separated.

[0045] The terminal electrode pair 310 includes a first terminal electrode 312 and a second terminal electrode 314. The first terminal electrode 312 extends to cover the first side surface S11, the second side surface S12, and the third side surface S13 of the first portion 232a of the first inner electrode 232 of the inner electrode group 230. The second terminal electrode 314 extends to cover the first side surface S21, the second side surface S22, and the third side surface S23 of the first portion 234a of the second inner electrode 234 of the inner electrode group 230.

[0046] The terminal electrode pair 320 includes a first terminal electrode 322 and a second terminal electrode 324. The first terminal electrode 322 extends to cover the first side surface S11, the second side surface S12, and the third side surface S13 of the first portion 242a of the first inner electrode 242 of the inner electrode group 240. The second terminal electrode 324 extends to cover the first side surface S21, the second side surface S22, and the third side surface S23 of the first portion 244a of the second inner electrode 244 of the inner electrode group 240.

[0047] The terminal electrode pair 330 includes a first terminal electrode 332 and a second terminal electrode 334. The first terminal electrode 332 extends to cover the first side surface S11, the second side surface S12, and the third side surface S13 of the first portion 252a of the first inner electrode 252 of the inner electrode group 250. The second terminal electrode 334 extends to cover the first side surface S21, the second side surface S22, and the third side surface S23 of the first portion 254a of the second inner electrode 254 of the inner electrode group 250.

[0048] Like the first end electrode 302, the side view shapes of the first end electrodes 312, 322, and 332 are similar to an inverted C. Similarly, like the second end electrode 304, the side view shapes of the second end electrodes 314, 324, and 334 are similar to a C.

[0049] In some embodiments, the first terminal electrodes 302, 312, 322, and 332, and the second terminal electrodes 304, 314, 324, and 334 are single-layer structures. In some exemplary embodiments, the first terminal electrodes 302, 312, 322, and 332, and the second terminal electrodes 304, 314, 324, and 334 are all single-layer electroplated copper structures. In other embodiments, the first terminal electrodes 302, 312, 322, and 332, and the second terminal electrodes 304, 314, 324, and 334 are all multi-layer stacked structures. For example, the first terminal electrodes 302, 312, 322, and 332, and the second terminal electrodes 304, 314, 324, and 334 each include an electroplated copper layer, an electroplated nickel layer, and an electroplated tin layer sequentially stacked on the ceramic body 210 to facilitate other packaging methods, such as surface mount technology (SMT) packaging applications.

[0050] The first side surface S11, the second side surface S12, and the third side surface S13 of the first parts 222a, 232a, 242a, and 252a are exposed on the upper surface 211, the first end face 213, and the lower surface 212 of the ceramic body 210, respectively. The first side surface S21, the second side surface S22, and the third side surface S23 of the first parts 224a, 234a, 244a, and 254a are exposed on the upper surface 211, the second end face 214, and the lower surface 212 of the ceramic body 210, respectively. Therefore, by means of electroplating, first end electrodes 302, 312, 322, and 332 can be grown on the first end face 213 of the ceramic body 210 and on the regions of the upper surface 211 and the lower surface 212 adjacent to the first end face 213, respectively, based on the exposed portions of the first portions 222a, 232a, 242a, and 252a, and the regions of the second end face 214 of the ceramic body 210 and on the regions of the upper surface 211 and the lower surface 212 adjacent to the second end face 214, respectively.

[0051] Since the first terminal electrodes 302, 312, 322, and 332, and the second terminal electrodes 304, 314, 324, and 334 are fabricated using electroplating, they have low surface roughness and uniform thickness. Therefore, the arrayed multilayer ceramic capacitor 100 is suitable for embedded packaging. In embodiments where the first terminal electrodes 302, 312, 322, and 332, and the second terminal electrodes 304, 314, 324, and 334 are copper electrodes formed by electroplating, no silicon, zinc, barium, or other substances are detected in the copper electrodes.

[0052] like Figure 1 As shown, the inner electrode group 220, the corresponding terminal electrode pair 300, and the portion of the ceramic body 210 between the terminal electrode pairs 300 constitute a capacitor unit CA1. The inner electrode group 230, the corresponding terminal electrode pair 310, and the portion of the ceramic body 210 between the terminal electrode pairs 310 constitute a capacitor unit CA2. The inner electrode group 240, the corresponding terminal electrode pair 320, and the portion of the ceramic body 210 between the terminal electrode pairs 320 constitute a capacitor unit CA3. The inner electrode group 250, the corresponding terminal electrode pair 330, and the portion of the ceramic body 210 between the terminal electrode pairs 330 constitute a capacitor unit CA4.

[0053] In some embodiments, capacitor units CA1, CA2, CA3, and CA4 have identical architectures. Therefore, capacitor units CA1, CA2, CA3, and CA4 have substantially the same capacitance value. In other embodiments, capacitor units CA1, CA2, CA3, and CA4 have the same number of internal electrodes, but their architectures differ due to variations in the shape, size, and / or spacing of the internal electrodes. Thus, the capacitance values ​​of capacitor units CA1, CA2, CA3, and CA4 may differ.

[0054] Please refer to Figure 7 This is a top view schematic diagram illustrating an array-type multilayer ceramic capacitor 100a according to a second embodiment of the present disclosure. The array-type multilayer ceramic capacitor 100a is substantially the same as the array-type multilayer ceramic capacitor 100 of the above embodiment, except that the number of internal electrodes in each internal electrode group of the capacitor units CA1a, CA2a, CA3a, and CA4a of the array-type multilayer ceramic capacitor 100a is different from each other.

[0055] Capacitor unit CA1a includes an inner electrode group (not shown), an end electrode pair 300a including a first end electrode 302a and a second end electrode 304a, and a ceramic body 210 portion sandwiched between the first end electrode 302a and the second end electrode 304a. Capacitor unit CA2a includes an inner electrode group (not shown), an end electrode pair 310a including a first end electrode 312a and a second end electrode 314a, and a ceramic body 210 portion sandwiched between the first end electrode 312a and the second end electrode 314a. Capacitor unit CA3a includes an inner electrode group (not shown), an end electrode pair 320a including a first end electrode 322a and a second end electrode 324a, and a ceramic body 210 portion sandwiched between the first end electrode 322a and the second end electrode 324a. Capacitor unit CA4a includes an inner electrode group (not shown), an end electrode pair 330a including a first end electrode 332a and a second end electrode 334a, and a ceramic body 210 portion sandwiched between the first end electrode 332a and the second end electrode 334a. The arrangement, shape, and material of the inner electrodes of the inner electrode groups of capacitor units CA1a, CA2a, CA3a, and CA4a are the same as those of the array-type multilayer ceramic capacitor 100, and will not be described again here.

[0056] The internal electrode groups of capacitor units CA1a, CA2a, CA3a, and CA4a include different numbers of first internal electrodes and different numbers of second internal electrodes. Furthermore, the spacing between the first and second internal electrodes of each capacitor unit CA1a, CA2a, CA3a, and CA4a is substantially the same. In this embodiment, the number of first and second internal electrodes in capacitor unit CA1a is less than that in capacitor unit CA2a, the number of first and second internal electrodes in capacitor unit CA2a is less than that in capacitor unit CA3a, and the number of first and second internal electrodes in capacitor unit CA3a is less than that in capacitor unit CA4a. Therefore, the width of the first end electrode 302a and the second end electrode 304a is less than that of the first end electrode 312a and the second end electrode 314a, the width of the first end electrode 312a and the second end electrode 314a is less than that of the first end electrode 322a and the second end electrode 324a, and the width of the first end electrode 322a and the second end electrode 324a is less than that of the first end electrode 332a and the second end electrode 334a.

[0057] Furthermore, the capacitance value of capacitor unit CA1a is smaller than that of capacitor unit CA2a, the capacitance value of capacitor unit CA2a is smaller than that of capacitor unit CA3a, and the capacitance value of capacitor unit CA3a is smaller than that of capacitor unit CA4a.

[0058] Please refer to Figure 8 This is a top view schematic diagram illustrating an array-type multilayer ceramic capacitor 100b according to a third embodiment of the present disclosure. The array-type multilayer ceramic capacitor 100b is substantially the same as the array-type multilayer ceramic capacitor 100a described above, except that the number of internal electrodes in the internal electrode groups of capacitor units CA1b and CA2b of the array-type multilayer ceramic capacitor 100b is the same, but different from the number of internal electrodes in the internal electrode groups of capacitor units CA3b and CA4b. Furthermore, the number of internal electrodes in the internal electrode groups of capacitor units CA3b and CA4b are different from each other.

[0059] In this embodiment, the spacing between the first and second internal electrodes of each capacitor unit CA1b, CA2b, CA3b, and CA4b is substantially the same. The number of first and second internal electrodes of capacitor unit CA1b is the same as that of capacitor unit CA2b, the number of first and second internal electrodes of capacitor units CA1b and CA2b is less than that of capacitor unit CA3b, and the number of first and second internal electrodes of capacitor unit CA3b is less than that of capacitor unit CA4b. Therefore, the width of the first end electrode 302b and the second end electrode 304b of the terminal electrode pair 300b of capacitor unit CA1b is substantially equal to the width of the first end electrode 312b and the second end electrode 314b of the terminal electrode pair 310b of capacitor unit CA2b. The width of the first end electrode 312b and the second end electrode 314b of capacitor unit CA2b is smaller than the width of the first end electrode 322b and the second end electrode 324b of the terminal electrode pair 320b of capacitor unit CA3b. The width of the first end electrode 322b and the second end electrode 324b of capacitor unit CA3b is smaller than the width of the first end electrode 332b and the second end electrode 334b ​​of the terminal electrode pair 330b of capacitor unit CA4b.

[0060] Furthermore, the capacitance value of capacitor unit CA1b is actually equal to that of capacitor unit CA2b, the capacitance values ​​of capacitor units CA1b and CA2b are less than those of capacitor unit CA3b, and the capacitance value of capacitor unit CA3b is less than that of capacitor unit CA4b.

[0061] Please refer to Figure 9 The diagram above illustrates a top view of an array-type multilayer ceramic capacitor 100c according to a fourth embodiment of the present disclosure. The array-type multilayer ceramic capacitor 100c is substantially the same as the array-type multilayer ceramic capacitor 100b described above, except that the array-type multilayer ceramic capacitor 100c is divided into multiple groups G1 to G3. Each group G1 to G3 contains two or more capacitor units, and the internal electrode group of each unit in each group G1 to G3 contains the same number of first internal electrodes and the same number of second internal electrodes.

[0062] exist Figure 9In the illustrated embodiment, group G1 includes capacitor units CA1c and CA2c, group G2 includes capacitor units CA3c and CA4c, and group G3 includes capacitor units CA5c and CA6c. The number of first and second internal electrodes in the inner electrode groups of capacitor units CA1c and CA2c in group G1 differs from the number of first and second internal electrodes in the inner electrode groups of capacitor units CA3c and CA4c in group G2, and the number of first and second internal electrodes in the inner electrode groups of capacitor units CA5c and CA6c in group G3. Furthermore, the number of first and second internal electrodes in the inner electrode groups of capacitor units CA3c and CA4c in group G2 also differs from the number of first and second internal electrodes in the inner electrode groups of capacitor units CA5c and CA6c in group G3.

[0063] In this embodiment, the spacing between the first and second inner electrodes of each capacitor unit CA1c, CA2c, CA3c, CA4c, CA5c, and CA6c is substantially the same. The number of first and second inner electrodes of capacitor units CA1c and CA2c in group G1 is less than that of capacitor units CA3c and CA4c in group G2, while the number of first and second inner electrodes of capacitor units CA3c and CA4c in group G2 is less than that of capacitor units CA5c and CA6c in group G2. Therefore, the width of the first end electrode 302c and second end electrode 304c of the end electrode pair 300c of capacitor unit CA1c and the width of the first end electrode 312c and second end electrode 314c of the end electrode pair 310c of capacitor unit CA2c are less than the width of the first end electrode 322c and second end electrode 324c of the end electrode pair 320c of capacitor unit CA3c and the width of the first end electrode 332c and second end electrode 334c of the end electrode pair 330c of capacitor unit CA4c. Furthermore, the widths of the first end electrode 322c and the second end electrode 324c of the end electrode pair 320c of capacitor unit CA3c and the first end electrode 332c and the second end electrode 334c of the end electrode pair 330c of capacitor unit CA4c are smaller than the widths of the first end electrode 342c and the second end electrode 344c of the end electrode pair 340c of capacitor unit CA5c and the first end electrode 352c and the second end electrode 354c of the end electrode pair 350c of capacitor unit CA6c.

[0064] Furthermore, the capacitance value of capacitor unit CA1c is substantially equal to that of capacitor unit CA2c, the capacitance value of capacitor unit CA3c is substantially equal to that of capacitor unit CA4c, and the capacitance value of capacitor unit CA5c is substantially equal to that of capacitor unit CA6c. The capacitance values ​​of capacitor units CA1c and CA2c are less than those of capacitor units CA3c and CA4c, and the capacitance values ​​of capacitor units CA3c and CA4c are less than those of capacitor units CA5c and CA6c.

[0065] As described above, the array-type multilayer ceramic capacitor disclosed herein comprises multiple internal electrode groups, and the three sides of the first internal electrode and the first portion of the second internal electrode of each internal electrode group are exposed on the upper surface, end face, and lower surface of the ceramic body. Therefore, based on the exposed portions of each internal electrode group, end electrodes can be grown on the two end faces of the ceramic body and the regions adjacent to the upper and lower surfaces using electroplating. Since the end electrodes of each internal electrode group are fabricated using electroplating, the end electrodes of each capacitor unit of the array-type multilayer ceramic capacitor can be formed simultaneously, achieving miniaturization of the array-type multilayer ceramic capacitor. Furthermore, the electroplated end electrodes have low surface roughness and uniform thickness, which is beneficial for the application of the array-type multilayer ceramic capacitor in embedded packaging architectures.

[0066] Although this disclosure has been illustrated above with reference to embodiments, it is not intended to limit this disclosure. Any person skilled in the art may make various modifications and refinements without departing from the spirit and scope of this disclosure. Therefore, the scope of protection of this disclosure shall be determined by the scope of the appended claims.

[0067] [Symbol Explanation]

[0068] 100: Arrayed multilayer ceramic capacitor

[0069] 100A: Arrayed multilayer ceramic capacitor

[0070] 100b: Arrayed multilayer ceramic capacitor

[0071] 100c: Arrayed multilayer ceramic capacitor

[0072] 200: Laminated bricks

[0073] 210: Ceramic body

[0074] 211: Upper surface

[0075] 212: Lower surface

[0076] 213: First end face

[0077] 214: Second end face

[0078] 215: First side view

[0079] 216: Second side view

[0080] 220: Internal electrode assembly

[0081] 222: First internal electrode

[0082] 222a: Part 1

[0083] 222b: Part Two

[0084] 224: Second internal electrode

[0085] 224a: Part 1

[0086] 224b: Part Two

[0087] 230: Internal electrode assembly

[0088] 232: First internal electrode

[0089] 232a: Part 1

[0090] 232b: Part Two

[0091] 234: Second internal electrode

[0092] 234a: Part 1

[0093] 234b: Part Two

[0094] 240: Internal electrode assembly

[0095] 242: First internal electrode

[0096] 242a: Part 1

[0097] 242b: Part Two

[0098] 244: Second internal electrode

[0099] 244a: Part 1

[0100] 244b: Part Two

[0101] 250: Internal electrode assembly

[0102] 252: First internal electrode

[0103] 252a: Part 1

[0104] 252b: Part Two

[0105] 254: Second internal electrode

[0106] 254a: Part 1

[0107] 254b: Part Two

[0108] 300: End electrode pair

[0109] 300a: Terminal electrode pair

[0110] 300b: Terminal electrode pair

[0111] 300c: Terminal electrode pair

[0112] 302: First terminal electrode

[0113] 302a: First terminal electrode

[0114] 302b: First terminal electrode

[0115] 302c: First terminal electrode

[0116] 304: Second terminal electrode

[0117] 304a: Second terminal electrode

[0118] 304b: Second terminal electrode

[0119] 304c: Second terminal electrode

[0120] 310: End electrode pair

[0121] 310a: Terminal electrode pair

[0122] 310b: Terminal electrode pair

[0123] 310c: Terminal electrode pair

[0124] 312: First terminal electrode

[0125] 312a: First terminal electrode

[0126] 312b: First terminal electrode

[0127] 312c: First terminal electrode

[0128] 314: Second terminal electrode

[0129] 314a: Second terminal electrode

[0130] 314b: Second terminal electrode

[0131] 314c: Second terminal electrode

[0132] 320: End electrode pair

[0133] 320a: Terminal electrode pair

[0134] 320b: Terminal electrode pair

[0135] 320c: Terminal electrode pair

[0136] 322: First terminal electrode

[0137] 322a: First terminal electrode

[0138] 322b: First terminal electrode

[0139] 322c: First terminal electrode

[0140] 324: Second terminal electrode

[0141] 324a: Second terminal electrode

[0142] 324b: Second terminal electrode

[0143] 324c: Second terminal electrode

[0144] 330: End electrode pair

[0145] 330a: Terminal electrode pair

[0146] 330b: Terminal electrode pair

[0147] 330c: Terminal electrode pair

[0148] 332: First terminal electrode

[0149] 332a: First terminal electrode

[0150] 332b: First terminal electrode

[0151] 332c: First terminal electrode

[0152] 334: Second terminal electrode

[0153] 334a: Second terminal electrode

[0154] 334b: Second terminal electrode

[0155] 334c: Second terminal electrode

[0156] 340c: Terminal electrode pair

[0157] 342c: First terminal electrode

[0158] 344c: Second terminal electrode

[0159] 350c: Terminal electrode pair

[0160] 352c: First terminal electrode

[0161] 354c: Second terminal electrode

[0162] CA1: Capacitor Unit

[0163] CA1a: Capacitor Unit

[0164] CA1b: Capacitor Unit

[0165] CA1c: Capacitor Unit

[0166] CA2: Capacitor Unit

[0167] CA2a: Capacitor Unit

[0168] CA2b: Capacitor Unit

[0169] CA2c: Capacitor Unit

[0170] CA3: Capacitor Unit

[0171] CA3a: Capacitor Unit

[0172] CA3b: Capacitor Unit

[0173] CA3c: Capacitor Unit

[0174] CA4: Capacitor Unit

[0175] CA4a: Capacitor Unit

[0176] CA4b: Capacitor Unit

[0177] CA4c: Capacitor Unit

[0178] CA5c: Capacitor Unit

[0179] CA6c: Capacitor Unit

[0180] G1: Group

[0181] G2: Group

[0182] G3: Group

[0183] S11: First side view

[0184] S12: Second side

[0185] S13: Third side

[0186] S14: Fourth Side

[0187] S21: First side view

[0188] S22: Second side

[0189] S23: Third side

[0190] S24: Fourth side view.

Claims

1. An array-type multilayer ceramic capacitor, characterized in that, The arrayed multilayer ceramic capacitor includes: Laminated bricks, comprising: A ceramic body having an upper surface and a lower surface, and a first end face and a second end face opposite to each other, wherein the first end face and the second end face are located between the upper surface and the lower surface; and A plurality of internal electrode groups are embedded in the ceramic body, physically spaced apart from each other. Each of the plurality of internal electrode groups includes a plurality of first internal electrodes and a plurality of second internal electrodes. In each of the plurality of internal electrode groups, the plurality of first internal electrodes and the plurality of second internal electrodes alternate and are physically spaced apart from each other. The plurality of first internal electrodes extend from a first end face toward a second end face and are spaced apart from the second end face. The plurality of second internal electrodes extend from the second end face toward the first end face and are spaced apart from the first end face. Each of the plurality of first internal electrodes and the plurality of second internal electrodes includes: The first part includes a first side, a second side, a third side, and a fourth side connected in sequence, wherein the first side, the second side, and the third side are exposed on the upper surface, the first end face or the second end face, and the lower surface, respectively. as well as The second part engages with the fourth side of the first part, and the second part is completely embedded in the ceramic body without being exposed. as well as Multiple terminal electrode pairs are respectively disposed on the multiple inner electrode groups and spaced apart from each other, wherein each of the multiple terminal electrode pairs includes a first terminal electrode and a second terminal electrode, wherein the first terminal electrode extends to cover the multiple first side surfaces, the multiple second side surfaces, and the multiple third side surfaces of the multiple first portions of the multiple inner electrodes of the corresponding multiple inner electrode groups, and the second terminal electrode extends to cover the multiple first side surfaces, the multiple second side surfaces, and the multiple third side surfaces of the multiple first portions of the multiple inner electrodes.

2. The array-type multilayer ceramic capacitor according to claim 1, characterized in that, The plurality of internal electrode groups comprise the same number of the plurality of first internal electrodes and the same number of the plurality of second internal electrodes.

3. The array-type multilayer ceramic capacitor according to claim 1, characterized in that, The plurality of internal electrode groups comprise a plurality of first internal electrodes in different numbers and a plurality of second internal electrodes in different numbers.

4. The array-type multilayer ceramic capacitor according to claim 1, characterized in that, One portion of the plurality of internal electrode groups includes the same number of the plurality of first internal electrodes and the same number of the plurality of second internal electrodes, while the number of the plurality of first internal electrodes and the number of the plurality of second internal electrodes in each of the other portion of the plurality of internal electrode groups differs from that in the other portion of the plurality of internal electrode groups.

5. The array-type multilayer ceramic capacitor according to claim 1, characterized in that, The plurality of internal electrode groups are divided into a plurality of groups, and each of the plurality of groups contains the same number of the plurality of first internal electrodes and the same number of the plurality of second internal electrodes.

6. The array-type multilayer ceramic capacitor according to claim 5, characterized in that, Each of the plurality of inner electrode groups of each of the plurality of groups and each of the plurality of inner electrode groups of any other of the plurality of groups contains a different number of the plurality of first inner electrodes and a different number of the plurality of second inner electrodes.

7. The array-type multilayer ceramic capacitor according to claim 1, characterized in that, The first and second end electrodes of each of the plurality of end electrode pairs each contain an electroplated copper structure.

8. The array-type multilayer ceramic capacitor according to claim 1, characterized in that, Each of the plurality of first internal electrodes and the plurality of second internal electrodes is T-shaped.

9. The array-type multilayer ceramic capacitor according to claim 1, characterized in that, Each of the plurality of internal electrode groups, the corresponding plurality of terminal electrode pairs, and the portion of the ceramic body between the corresponding plurality of terminal electrode pairs constitute a capacitor unit, and the plurality of capacitor units have the same architecture as each other.

10. The array-type multilayer ceramic capacitor according to claim 1, characterized in that, Each of the plurality of internal electrode groups, the corresponding plurality of terminal electrode pairs, and the portion of the ceramic body between the corresponding plurality of terminal electrode pairs constitute a capacitor unit, and the architectures of the plurality of capacitor units are different from each other.

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