U.S. patent application number 14/990332 was filed with the patent office on 2016-07-28 for multi-layer ceramic capacitor assembly.
The applicant listed for this patent is SAMSUNG ELECTRO-MECHANICS CO., LTD.. Invention is credited to Young-Ghyu Ahn, Kyoung-Jin Jun, Soon-Ju Lee, Heung-Kil Park, Sang-Soo Park, So-Yeon Song.
Application Number | 20160217929 14/990332 |
Document ID | / |
Family ID | 56434122 |
Filed Date | 2016-07-28 |
United States Patent
Application |
20160217929 |
Kind Code |
A1 |
Lee; Soon-Ju ; et
al. |
July 28, 2016 |
MULTI-LAYER CERAMIC CAPACITOR ASSEMBLY
Abstract
A multi-layer ceramic capacitor assembly includes a multi-layer
ceramic capacitor comprising a laminate, the laminate having
dielectric layers and internal electrodes laminated alternately
therein, and external electrodes being electrically connected with
the internal electrodes and disposed at end portions of the
laminate; and an electrode-forming substrate coupled to the
multi-layer ceramic capacitor and having through-holes disposed to
correspond to the external electrodes.
Inventors: |
Lee; Soon-Ju; (Cheongju,
KR) ; Ahn; Young-Ghyu; (Yongin, KR) ; Jun;
Kyoung-Jin; (Siheung, KR) ; Park; Sang-Soo;
(Suwon, KR) ; Song; So-Yeon; (Seongnam, KR)
; Park; Heung-Kil; (Busan, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
Suwon-Si |
|
KR |
|
|
Family ID: |
56434122 |
Appl. No.: |
14/990332 |
Filed: |
January 7, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H05K 1/141 20130101;
H05K 3/3436 20130101; Y02P 70/613 20151101; H01G 4/0085 20130101;
H05K 1/111 20130101; H01G 4/232 20130101; H01G 4/30 20130101; H05K
1/0271 20130101; H05K 1/181 20130101; H01G 2/065 20130101; Y02P
70/50 20151101 |
International
Class: |
H01G 4/30 20060101
H01G004/30; H01G 4/012 20060101 H01G004/012; H05K 1/11 20060101
H05K001/11; H05K 1/02 20060101 H05K001/02; H01G 4/12 20060101
H01G004/12; H01G 4/248 20060101 H01G004/248; H05K 1/18 20060101
H05K001/18 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 26, 2015 |
KR |
10-2015-0012188 |
Claims
1. A multi-layer ceramic capacitor assembly comprising: a
multi-layer ceramic capacitor comprising a laminate, the laminate
having dielectric layers and internal electrodes laminated
alternately therein, and external electrodes being electrically
connected with the internal electrodes and disposed at end portions
of the laminate; and an electrode-forming substrate coupled to the
multi-layer ceramic capacitor and having through-holes disposed to
correspond to the external electrodes.
2. The multi-layer ceramic capacitor assembly of claim 1, further
comprising a first bonding part disposed between the multi-layer
ceramic capacitor and the electrode-forming substrate in a region
where the external electrodes are not formed and configured to bond
the multi-layer ceramic capacitor with the electrode-forming
substrate.
3. The multi-layer ceramic capacitor assembly of claim 2, wherein
the first bonding part comprises: a pair of first bonding pads
formed integrally with the multi-layer ceramic capacitor and the
electrode-forming substrate, respectively; and a first soldering
member configured for soldering the pair of first bonding pads with
each other.
4. The multi-layer ceramic capacitor assembly of claim 1, further
comprising a circuit board having surface electrodes formed on one
surface thereof and being coupled to the electrode-forming
substrate in such a way that the surface electrodes are
electrically connected with the external electrodes through the
through-holes.
5. The multi-layer ceramic capacitor assembly of claim 4, wherein
the electrode-forming substrate comprises current-carrying
soldering members connecting the surface electrodes with the
external electrodes through the through-holes in such a way that
the surface electrodes are electrically connected, respectively,
with the external electrodes.
6. The multi-layer ceramic capacitor assembly of claim 5, further
comprising second bonding parts disposed at portions of the
electrode-forming substrate and the circuit board where the surface
electrodes are formed and bonding the electrode-forming substrate
with the circuit board.
7. The multi-layer ceramic capacitor assembly of claim 6, wherein
the second bonding parts each comprise: a second bonding pad
integrally formed with the electrode-forming substrate; and a
second soldering member connecting the second bonding pad with one
of the surface electrodes.
8. The multi-layer ceramic capacitor assembly of claim 6, wherein
the current-carrying soldering member and the second soldering
member are integrally formed.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of priority to Korean
Patent Application No. 10-2015-0012188, filed with the Korean
Intellectual Property Office on Jan. 26, 2015, the entirety of
which is incorporated herein by reference.
TECHNICAL FIELD
[0002] The present disclosure relates to a multi-layer ceramic
capacitor assembly.
BACKGROUND
[0003] Multi-layer ceramic capacitors (MLCC) are popularly used in
mobile terminals, such as mobile phones. An MLCC may be connected
electrically and physically to a circuit board of a mobile terminal
by placing an external electrode of the MLCC directly on a surface
electrode for mounting to the circuit board and soldering the
surface electrode with the external electrode of the MLCC.
[0004] However, the MLCC may be mechanically deformed by a change
of voltage applied thereto. Moreover, such a deformation may be
transferred to the circuit board and cause the circuit board to
vibrate, possibly causing acoustic noises that are audible to a
human ear.
SUMMARY
[0005] One embodiment of the present invention provides a
multi-layer ceramic capacitor assembly comprising a multi-layer
ceramic capacitor comprising a laminate, the laminate having
dielectric layers and internal electrodes laminated alternately
therein, and external electrodes being electrically connected with
the internal electrodes and disposed at end portions of the
laminate; and an electrode-forming substrate coupled to the
multi-layer ceramic capacitor and having through-holes disposed to
correspond to the external electrodes.
[0006] The multi-layer ceramic capacitor assembly may further
comprise a first bonding part disposed between the multi-layer
ceramic capacitor and the electrode-forming substrate in a region
where the external electrodes are not formed and configured to bond
the multi-layer ceramic capacitor with the electrode-forming
substrate.
[0007] The first bonding part may comprise a pair of first bonding
pads formed integrally with the multi-layer ceramic capacitor and
the electrode-forming substrate, respectively; and a first
soldering member configured for soldering the pair of first bonding
pads with each other.
[0008] The multi-layer ceramic capacitor assembly may further
comprise a circuit board having surface electrodes formed on one
surface thereof and being coupled to the electrode-forming
substrate in such a way that the surface electrodes are
electrically connected with the external electrodes through the
through-holes.
[0009] The electrode-forming substrate may comprise
current-carrying soldering members connecting the surface
electrodes with the external electrodes through the through-holes
in such a way that the surface electrodes are electrically
connected, respectively, with the external electrodes.
[0010] The multi-layer ceramic capacitor assembly may further
comprise second bonding parts disposed at portions of the
electrode-forming substrate and the circuit board where the surface
electrodes are formed and bonding the electrode-forming substrate
with the circuit board.
[0011] The second bonding parts each may comprise a second bonding
pad integrally formed with the electrode-forming substrate; and a
second soldering member connecting the second bonding pad with one
of the surface electrodes.
[0012] The current-carrying soldering member and the second
soldering member may be integrally formed.
[0013] Here, in the multi-layer ceramic capacitor assembly, while a
circuit board is coupled to the other surface of the
electrode-forming substrate, surface electrodes formed on one
surface of the circuit board may be electrically connected to the
external electrodes of the multi-layer ceramic capacitor through
the through-holes.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a perspective view showing a multi-layer ceramic
capacitor assembly in accordance with an embodiment of the present
invention.
[0015] FIG. 2 is an exploded perspective view showing the
multi-layer ceramic capacitor assembly in accordance with an
embodiment of the present invention.
[0016] FIG. 3 is a cross-sectional view showing the multi-layer
ceramic capacitor assembly in accordance with an embodiment of the
present invention.
[0017] FIG. 4 is a detailed cross-sectional view showing a
multi-layer ceramic capacitor in the multi-layer ceramic capacitor
assembly in accordance with an embodiment of the present
invention.
DETAILED DESCRIPTION
[0018] The terms used in the description are intended to describe
certain embodiments only, and shall by no means restrict the
present invention. Unless clearly used otherwise, expressions in a
singular form also include a meaning of a plural form.
[0019] In the present description, when any part is described to
"comprise" or "include" any element, it is intended to describe the
possibility of encompassing additional element(s), rather than
excluding any other element, unless otherwise described. Moreover,
when any element is described to be "on," "above" or "over" any
part or element, it shall be understood that such element is placed
above or below such part or element and not necessarily at a
vertically higher position.
[0020] When one element is described to be "coupled" to another
element, it does not refer to a physical, direct contact between
these elements only, but it shall also include the possibility of
another element being interposed between these elements and each of
these elements being in contact with the other element.
[0021] Terms such as "first" and "second" may be used to
distinguish one element from other identical or corresponding
elements, but the above elements shall not be restricted to the
above terms.
[0022] The size and thickness of each element shown in the drawings
are provided for the convenience of description, illustration, and
understanding, and thus the present invention shall not be limited
to how the drawings are illustrated.
[0023] Hereinafter, an embodiment of a multi-layer ceramic
capacitor assembly in accordance with the present invention will be
described with reference to the accompanying drawings. In
describing the present invention with reference to the accompanying
drawings, any identical or corresponding elements will be assigned
with same reference numerals, and their description will not be
provided redundantly.
[0024] FIG. 1 is a perspective view showing a multi-layer ceramic
capacitor assembly in accordance with an embodiment of the present
invention. FIG. 2 is an exploded perspective view showing the
multi-layer ceramic capacitor assembly in accordance with an
embodiment of the present invention. FIG. 3 is a cross-sectional
view showing the multi-layer ceramic capacitor assembly in
accordance with an embodiment of the present invention. FIG. 4 is a
detailed cross-sectional view showing a multi-layer ceramic
capacitor in the multi-layer ceramic capacitor assembly in
accordance with an embodiment of the present invention.
[0025] As illustrated in FIG. 1 to FIG. 4, a multi-layer ceramic
capacitor assembly 1000 in accordance with an embodiment of the
present invention includes a multi-layer ceramic capacitor 100 and
an electrode-forming substrate 200 and may further include a first
bonding part 300, a circuit board 400, and second bonding parts
500.
[0026] The multi-layer ceramic capacitor 100 may include a laminate
110, which has dielectric layers 111 and internal electrodes 113
laminated alternately therein, and an external electrode 120, which
is electrically connected with the internal electrodes 113 and
formed at an end portion of the laminate 110.
[0027] That is, as illustrated in FIG. 4, the laminate 110 of the
multi-layer ceramic capacitor 100 is formed by successively
laminating the dielectric layers 111, which contain ceramic
particles, and the internal electrodes 113 alternately.
[0028] The external electrodes 120 are provided in a pair formed at
either end portion of the laminate 110, and the internal electrodes
113 may each be electrically connected with either of the pair of
external electrodes 120. The pair of external electrodes 120 may be
formed at either end portion of the laminate 110 to face opposite
to each other and may be made of a conductive material such as
copper.
[0029] The electrode-forming substrate 200, which has the
multi-layer ceramic capacitor 100 coupled to one surface thereof
and has through-holes 210 formed at portions corresponding to where
the external electrodes 120 are formed, may be interposed between
the multi-layer ceramic capacitor 100 and the circuit board 400 in
order to carry out, for example, an insulation function in case the
multi-layer ceramic capacitor 100 is mounted on the circuit board
400.
[0030] In order for the insulation function to be effective, a
surface on which the multi-layer ceramic capacitor 100 is mounted
on the circuit board 400 may be entirely covered by the
electrode-forming substrate 200, but this may complicate the
electrical connection between the multi-layer ceramic capacitor 100
and the circuit board 400.
[0031] On the other hand, if the multi-layer ceramic capacitor 100
were physically bonded directly to the circuit board 400 over a
large area, vibrations generated by the multi-layer ceramic
capacitor 100 might be directly transferred to the circuit board
400, possibly generating an acoustic noise.
[0032] Therefore, the multi-layer ceramic capacitor assembly 1000
in accordance with the present embodiment may have the
through-holes 210 formed in the electrode-forming substrate 200
covering the surface where the multi-layer ceramic capacitor 100 is
installed and thus the multi-layer ceramic capacitor 100 may be
electrically connected to the circuit board 400 through these
through-holes 210.
[0033] Accordingly, since a relatively minimum area of the surface
where the multi-layer ceramic capacitor 100 is mounted is exposed,
the insulating performance may be enhanced, and the electrical
connection may be readily made.
[0034] The first bonding part 300, which is formed at portions of
the multi-layer ceramic capacitor 100 and the electrode-forming
substrate 200 where the external electrodes 120 are not formed, is
configured to physically bond the multi-layer ceramic capacitor 100
with the electrode-forming substrate 200.
[0035] That is, as illustrated in FIG. 1 to FIG. 3, when the
external electrodes 120 are formed at either end portion of the
laminate 110, the first bonding part 300 may be formed at a middle
portion of the laminate 110.
[0036] In such a configuration, the first bonding part 300 may be
variably configured, for example, by including an adhesive material
to bond the multi-layer ceramic capacitor 100 with the
electrode-forming substrate 200 or by including a binding member to
lock the multi-layer ceramic capacitor 100 with the
electrode-forming substrate 200.
[0037] As described above, by further including the first bonding
part 300, the multi-layer ceramic capacitor assembly 1000 may
separate an electrical connection path from a physical connection
path between the multi-layer ceramic capacitor 100 and the
electrode-forming substrate 200.
[0038] Here, the first bonding part 300 may include a pair of first
bonding pads 310, which are integrally formed with the multi-layer
ceramic capacitor 100 and the electrode-forming substrate 200,
respectively, and a first soldering member 320 configured for
soldering the pair of first bonding pads 310 with each other.
[0039] That is, the multi-layer ceramic capacitor 100 and the
electrode-forming substrate 200 may be bonded to each other more
readily and effectively through soldering, which is the most widely
used bonding method for mounting the multi-layer ceramic capacitor
100 on the circuit board 400.
[0040] The circuit board 400, which has surface electrodes 410
formed on one surface thereof and is coupled to the other surface
of the electrode-forming substrate 200 in such a way that the
surface electrodes 410 are electrically connected with the external
electrodes 120 through the through-holes 210, has a predetermined
circuit pattern formed thereon to provide electrical signals to the
multi-layer ceramic capacitor 100.
[0041] As such, since the electrical connection between the
multi-layer ceramic capacitor 100 and the circuit board 400 is made
with a minimum area through the through-holes 210, the vibrations
of the multi-layer ceramic capacitor 100 may be minimally
transferred directly to the circuit board 400.
[0042] In the multi-layer ceramic capacitor assembly 1000 in
accordance with the present embodiment, the electrode-forming
substrate 200 may include current-carrying soldering members 420
configured for soldering the surface electrodes 410 with the
external electrodes 120 through the through-holes 210 in such a way
that the surface electrodes 410 are electrically connected,
respectively, with the external electrodes 120.
[0043] That is, the surface electrodes 410 may be electrically
connected with the external electrodes 120, respectively, more
readily and effectively through soldering. In such a case, by
laminating the partially fluid current-carrying soldering members
420 on the surface electrodes 410 and then exerting downward force
on the electrode-forming substrate 200 over the current-carrying
soldering members 420, the current-carrying soldering members 420
may bulge up through the through-holes 210 to make contact with the
external electrodes 120.
[0044] The second bonding parts 500, which are formed at portions
of the electrode-forming substrate 200 and the circuit board 400
where the surface electrodes 410 are formed and are configured to
bond the electrode-forming substrate 200 with the circuit board
400, may physically bond the electrode-forming substrate 200 with
the circuit board 400.
[0045] The second bonding parts 500 may also be variably
configured, for example, by including an adhesive material to bond
the electrode-forming substrate 200 with the circuit board 400, or
by including a binding member to lock the electrode-forming
substrate 200 with the circuit board 400.
[0046] As such, by allowing the electrode-forming substrate 200 and
the circuit board 400 to be physically bonded with each other
through the second bonding parts 500 at portions where the surface
electrodes 410 are formed, a physical coupling between the
multi-layer ceramic capacitor 100 and the electrode-forming
substrate 200 is made at a middle portion of the electrode-forming
substrate 200, and a physical coupling between the
electrode-forming substrate 200 and the circuit board 400 is made
at peripheral portions of the electrode-forming substrate 200.
[0047] Accordingly, even if the vibrations of the multi-layer
ceramic capacitor 100 were transferred to the electrode-forming
substrate 200, the vibrations would have to be transferred to the
peripheral portions of the electrode-forming substrate 200 before
being eventually transferred to the circuit board 400, providing a
relatively inefficient transfer path and thereby possibly
minimizing the transfer of the vibrations of the multi-layer
ceramic capacitor 100 to the circuit board 400.
[0048] Here, the second bonding parts 500 may each include a second
bonding pad 510, which is integrally formed with the
electrode-forming substrate 200, and a second soldering member 520
configured for soldering the second bonding pad 510 with one of the
surface electrodes 410.
[0049] In other words, it is possible to bond the electrode-forming
substrate 200 with the circuit board 400 more readily and
effectively through soldering. Particularly, the soldering between
the electrode-forming substrate 200 and the circuit board 400 may
be performed in conjunction with the soldering between the
multi-layer ceramic capacitor 100 and the electrode-forming
substrate 200 through the first bonding part 300, allowing the
bonding processes to be performed more readily.
[0050] Moreover, in the multi-layer ceramic capacitor assembly 1000
in accordance with the present embodiment, the current-carrying
soldering members 420 and the second soldering members 520 may each
be integrally formed with each other. Specifically, instead of
forming the current-carrying soldering members 420 and the second
soldering members 520 separately, the partially fluid
current-carrying soldering members 420 may be laminated,
respectively, on the surface electrodes 410, and then the
electrode-forming substrate 200 may be pressed down over the
current-carrying soldering members 420. Then, portions of the
current-carrying soldering members 420 that bulge up through the
through-holes 210 may naturally become the current-carrying
soldering members 420, and portions of the current-carrying
soldering members 420 that escape the through-holes 210 and are
interposed between the electrode-forming substrate 200 and the
circuit board 400 may become the second soldering members 520.
[0051] As such, since the current-carrying soldering members 420
and the second soldering members 520 may be integrally formed,
processes for electrical connection and physical bonding may be
simultaneously performed.
[0052] Although certain embodiments of the present invention have
been described above, it shall be appreciated that there can be a
variety of permutations and modifications of the present invention
by those who are ordinarily skilled in the art to which the present
invention pertains without departing from the technical ideas and
scope of the present invention, which shall be defined by the
appended claims. It shall be also appreciated that a large number
of other embodiments than the above-described embodiment are
included in the claims of the present invention.
* * * * *