The present invention relates to a method of manufacturing an electrical connection structure for electrical connecting between inside and outside portions of printed circuit boards, interposers, electronic packages, and connectors for mutual electrical connecting thereof.
An electrical connection structure is required to connect a printed circuit board (PCB) and devices (for example, semiconductive material packages, passive devices, active devices, display modules, and batteries) mounted thereon, or to connect PCBs with other PCBs.
A typical electrical connection structure may be a connector for an electrical connection, and the connector is used for connecting different substrates to each other or for connecting a substrate and electronic components.
Generally, the connector for the electrical connection is a type in which a female connection structure and a male connection structure are coupled to each other, and includes a solder bonding type in which the connector is mounted on a substrate and the like using soldering, and a socket type for detachably coupling.
Generally, the connector for the electrical connection is manufactured to have a specific shape by injection molding a synthetic resin. That is, the connector is formed by a plastic being heated and melted, injected into a mold by high pressure, and cooled to solidify while the pressure is maintained.
When the connector for the electrical connection is manufactured by the injection molding, a great expense is incurred for manufacturing a mold, and there is inconvenience in which a new mold is manufactured again when the design of the electrical connection structure is changed.
In addition, since the connector for the electrical connection is manufactured to be limited to a specific shape (for example, a square shape), the connector should not interfere with structures such as other components or screw holes mounted on a printed circuit board. Thus, there is a problem in which a degree of freedom of circuit design is inhibited because the size of the printed circuit board is increased to increase a mounting space, or a space for connector mounting is considered when a circuit is designed.
The present invention is directed to providing a method of manufacturing an electrical connection structure using a method of manufacturing a printed circuit board in which it is possible for a design to be changed easily and to increase a degree of a mounting location and the effectiveness of a space usage.
The scope of the present invention is not limited to the above-described objects, and other unmentioned objects may be clearly understood by those skilled in the art from the following description.
One aspect of the present invention provides a method of manufacturing an electrical connection structure which includes a female connection structure having an inner conductive material inside an insertion hole of a female connection member, and a male connection structure having a conductive column configured to be inserted into and fixed to the insertion hole to be in contact with the inner conductive materials, and formed to protrude from a male connection member. The method includes preparing insulating members used for the female connection member and the male connection member; and forming the inner conductive material and the column by patterning a conductive material on each of the insulating members using a photolithography process.
According to the method of manufacturing an electrical connection structure, the female connection structure is manufactured by following processes including forming the insertion hole in the insulating member, stacking an electrode layer and a first dry film on the insulating member, forming a pattern hole having a shape corresponding to the insertion hole in the first dry film using a photolithography process, filling the insertion hole with a conductive material using an electrical plating process, and forming the inner conductive material by etching the conductive material in the insertion hole.
According to the method of manufacturing an electrical connection structure, the male connection structure is manufactured by following processes including forming an electrode layer and a second dry film on the insulating member, forming a column hole in the second dry film using a photolithography process, and forming the column by filling the column hole with a conductive material using an electrical plating process.
According to the method of manufacturing an electrical connection structure, the male connection structure is manufactured by adding following processes including stacking a third dry film and a fourth dry film on both sides surfaces of the insulating member before stacking the second dry film, forming a pattern hole for forming a pad in the third dry film and the fourth dry film using a photolithography process, and forming the pad by filling the pattern hole in the third dry film and the fourth dry film with a conductive material using an electrical plating process.
According to the method of manufacturing an electrical connection structure, the male connection structure is manufactured by adding following processes including stacking a fifth dry film to cover the columns, forming a pattern hole having a shape corresponding to an elastic fin in the fifth dry film using a photolithography process, and forming the elastic fin by filling the pattern hole in the fifth dry film with a conductive material using an electrical plating process.
According to the method of manufacturing an electrical connection structure, the male connection structure is manufactured by adding following processes including stacking an elastic fin separately manufactured on the columns.
Meanwhile, another aspect of the present invention provides a method of manufacturing an electrical connection structure which includes a female connection structure having an inner conductive material inside an insertion hole of a female connection member, and a male connection structure having a conductive column configured to be inserted into and fixed to the insertion hole to be in contact with the inner conductive materials, formed to protrude from a male connection member, and having an elastic fin around the columns, and the male connection structure is manufactured by following processes including preparing a metal plate used for the elastic fins, forming the column on the metal plate using a photolithography process and a plating process, and stacking an insulating member used for the male connection member on the columns.
According to the method of manufacturing an electrical connection structure the female connection member or the male connection member includes at least one of an active device, a passive device, a connector for electrical connection, a semiconductive material chip package, an interposer applied to a semiconductive material package, a semiconductive material chip and package having a three dimensional multilayered structure, and a multilayered ceramic capacitor.
An electrical connection structure is manufactured using a method of manufacturing a printed circuit board according to an exemplary embodiment of the present invention in which it is possible for a design to be changed easily and to increase a degree of a mounting location and the effectiveness of a space usage.
Also, according to an exemplary embodiment of the present invention, there is an advantage in which an expense for manufacturing a mold can be saved because conventional injection molding is not used.
In addition, there are effects in that many of the electrical connection structures can be disposed in a small space, and a fine pitch between connection structures can be implemented because of the electrical connection structure described above.
In addition, there are advantages in that an electrical signal speed can be increased by implementing the electrical connection structure in a low height and nearly linear structure, and a signal quality can be increased by reducing a signal loss.
An electrical connection structure disclosed in the present invention is a concept which covers all structures for electrical connecting between printed circuit boards applied to all types of electronic devices such as all types of mobile phones, display devices and the like, and electronic devices mounted on the printed circuit board, and a printed circuit board and electrical components. The electrical connection structure is capable of being applied to electronic devices such as all types of mobile phone, and display devices, and in this case, an electrical connection structure of the present invention may be provided in a housing configured to form an appearance of an electronic device. One exemplary embodiment of this may be an electrical connection structure between a printed circuit board installed in a housing and electronic components mounted thereon.
Hereinafter, a detachable electrical connection structure related to the present invention will be described in detail with reference to accompanying drawings.
As illustrated in
The female connection structure 100 and the male connection structure 200 may be formed in the printed circuit board or may be a stand-alone component configured to be mounted on a printed circuit board. For example, the female connection structure 100 or the male connection structure 200 may include at least one of an active device, a passive device, a connector, an interposer applied to a semiconductive material package, a semiconductive material chip package, a semiconductive material chip and package having a three dimensional multilayered structure, and a multilayered ceramic capacitor.
The female connection structure 100 includes a female connection member 110 having insertion holes 113, and inner conductive materials 120 provided in the insertion holes 113.
The female connection member 110 may be formed of an insulating material, or a combination of an insulating material and a conductive material. A raw material of the female connection member 110 may be one or a combination of more than one of a ceramic, a polymer, silicon, glass, a metal and the like.
The inner conductive material 120 is provided on an inner wall of an insertion hole 113 formed in the female connection member 110. According to an exemplary embodiment of the present invention insertion, the insertion hole 113 may have a shape resulting from recessing a surface (a lower surface in
The inner conductive material 120 may have a shape stacked on the inner wall of the insertion hole 113 at a predetermined thickness. According to an exemplary embodiment of the present invention the inner conductive material 120 is formed along an edge of the inner wall of the insertion hole 113.
The male connection structure 200 includes a male connection member 210, columns 220 protruding from the male connection member 210, and elastic fins 230 extending toward an outer direction from the column 220.
As in the female connection member 110, the male connection member 210 may be formed of an insulating material, or a combination of an insulating material and a conductive material.
The column 220 includes a conductive material and a structure protruding from the male connection member 120. In the exemplary embodiment of the present invention, as an example, the column 220 is mounted on a pad 240 connected to a circuit pattern of the male connection member 210.
The entire column 220 may be formed of a conductive material, or an outside surface thereof may be formed of a conductive material and an inside thereof may be formed of an insulating material. As one example of the latter, the inside of the column 220 may be formed of a polymer, silicon, glass and the like, and only the outside surface thereof may be formed of the conductive material. As illustrated in
The inner conductive material 120 and the column 220 may be disposed in an array shape on the female connection member 110 and the male connection member 210. For example, it is possible for the inner conductive material 120 and the column 220 to be disposed in a matrix shape having a predetermined number of columns and rows, or other various shapes.
The elastic fin 230 has a surface having a conductive material and configured to extend outside the column 220. The elastic fin 230 is configured to elastically contact the inner conductive material 120 by being elastically deformed when the column 220 is inserted into the insertion hole 113.
The elastic fins 230 may be bent in a direction opposite to an insertion direction of the column 220 when the column 220 is inserted into the insertion hole 113, and may have an integrated structure with the column 220 or have a configuration in which an additional layer is stacked on an upper surface of the column 220.
The elastic fin 230 may be formed of a conductive material (for example, a metal) capable of being elastically deformed, or may be formed by a surface of an elastic material (for example, a polymer, a fiber) being coated with a conductive material (for example, a metal).
It is preferable to form the elastic fins 230 as a plurality so as to be in contact with a plurality of areas of the inner conductive material 120, and as illustrated in
The female connection member 110 and the male connection member 210 respectively include a first connection portion and a second connection portion, and may respectively have a plurality of numbers thereof. The first connection portion and the second connection portion refer to objects configured to be electrically connected by a connection between the female connection member 110 and the male connection member 210, and examples thereof may include pads, circuit patterns, bumps, solder balls, via holes and the like.
According to an exemplary embodiment of the present invention, a pad 130 formed on upper surface of the female connection member 110 is provided as one example of the first connection portion, and a pad 250 formed on a lower surface of the male connection member 210 is provided as one example of the second connection portion.
The inner conductive material 120 formed of a conductive material (for example, a metal) is electrically connected to the first connection portion, and as an example, the inner conductive material 120 in
The column 220 is electrically connected to the second connection portion of the male connection member 210, the pad 250 of the lower surface of the male connection member 210 is capable of being electrically connected through a conductive structure such as a pad 240 of an upper surface of the male connection member 210 and a via hole.
Hereinafter, an operation state of an electrical connection structure of the present invention.
From a state in which the female connection structure 100 and the male connection structure 200 are separated from each other as illustrated in
Meanwhile, as the elastic fin 230 electrically connected to the second connection portion of the male connection member 210 is in contact with the inner conductive material 120 electrically connected to the first connection portion of the female connection member 110, it is possible to electrically connect the first connection portion and the second connection portion.
As described above, an additional physical coupling structure is not required due to implementing an electrical connection structure and a physical coupling structure together, and there is advantage in that a total thickness of the electrical connection structure is capable of being decreased by implementing the electrical connection structure in a horizontal contact structure at an inside of the female connection member 110. In addition, there are advantages in that an electrical signal speed may be increased by implementing the electrical connection structure in a low height and nearly linear structure, and a signal quality may be increased by reducing a signal loss.
Meanwhile, even though a structure in which the elastic fin 230 is provided on an outside surface of the column 220 is described as a structure of the male connection structure 200, a structure is possible in which the elastic fin 230 is not provided, and the column 220 is inserted into and coupled to the insertion hole 113, and the column 220 is in directly contact with the inner conductive material 120.
Hereinafter, a method of manufacturing an electrical connection structure according to an exemplary embodiment of the present invention will be described with reference to
A method of manufacturing an electrical connection structure according to the present invention includes an process of preparing insulating members 101 and 201 used for the female connection member 110 and the male connection member 210, and an process of forming the inner conductive material 120 and the column 220 by patterning a conductive material on each of the insulating members 101 and 201 using a photolithography process.
Hereinafter, each of manufacturing processes of the female connection structure 100 and the male connection structure 200 will be described in detail.
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Then, an electrode layer 102 is stacked as illustrated in
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At this time, another dry film 103 is adhered to a side opposite to the insertion hole 113, a pattern hole 133 corresponding to the pad 130 may be formed using a photolithography process. The photolithography processes which form each of the pattern holes 123 and 133 may be performed at the same time.
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The male connection structure according to an exemplary embodiment of the present invention has the same process as the previous embodiment except the process of forming the elastic fin 230. That is, processes
The method of manufacturing the male connection structure in this embodiment of the present invention is the same until the process of forming the column 220, since then, as illustrated in
The method of manufacturing the male connection structure according to an exemplary embodiment of the present invention has a reverse order with the previous embodiments, that is, includes a method in which the column 220 and the insulating member 210 are sequentially stacked on a metal plate 301 used for the elastic fin 230.
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For example, it is possible to design the structure D which avoids an arrangement location of a screw hole 15.
Furthermore, there is an advantage in that the inner conductive material 120 or the column 220 may be disposed in the female connection member 110 or the male connection member 210 in various shapes as illustrated by an enlarged view of the structure A in
The electrical connection structure and the method of manufacturing the same related to the present invention described above may be applied to various fields such as connectors for electrical connections, semiconductive material package assemblies, mutual connection structures for flip chips, mutual connection structures for capacitors of a multilayer ceramic capacitor (MLCC) and other components (or substrates), etc.
Meanwhile, the electrical connection structure and the method of manufacturing the same described above are not limited to the configurations and the methods of the embodiments described above, and various changes to the embodiments may be made by selectively combining all or a part of each of the embodiments, and the various changes may be made by those skilled in the art without departing from the spirit and scope of the present invention.
Number | Date | Country | Kind |
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10-2015-0010482 | Jan 2015 | KR | national |
Filing Document | Filing Date | Country | Kind |
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PCT/KR2015/002753 | 3/20/2015 | WO | 00 |