KR101704646B1 - Functional contactor - Google Patents

Abstract

Provided is a functional contactor. The functional contactor includes a clip-shaped conductor having elasticity and being in electrical contact with a conductor of an electronic device; and a functional device electrically connected in series to a clip-shaped conductor through a solder and having a first electrode and a second electrode on upper and lower surfaces thereof. The functional device is provided with a protrusion on a part of an upper surface thereof so as to align the position of the clip-shaped conductor. The clip-shaped conductor is formed on a lower surface thereof with a groove portion corresponding to the protrusion such that the clip-shaped conductor is engaged with the functional device. When the clip-shaped conductor is laminated on the functional device through soldering, the clip-shaped conductor may be aligned at a correct position, so that the clip-shaped conductor may be prevented from being twisted, and electrical or mechanical failure may be prevented. Therefore, it is possible to stably perform the bonding, so that the precision and reliability of the product may be improved. When the clip-shaped conductor is bonded to a functional device through soldering or a functional contactor is mounted on a circuit board through soldering, a clip-shaped conductor is restricted, so that the clip-shaped conductor may be prevented from shaking by a liquid solder melted in the first or second reflow process. In addition, the soldering process may be performed stably and easily without any effort for separate alignment, thereby improving the production efficiency.

Description

Functional contactor

The present invention relates to a contactor for an electronic device such as a smart phone, and more particularly to a functional contactor capable of stably aligning a contactor that is stacked by soldering on a functional device.

In recent portable electronic devices, there is an increasing tendency to adopt a metal housing to improve esthetics and robustness. Such a portable electronic device alleviates an impact from the outside and simultaneously penetrates into the portable electronic device or reduces the electromagnetic waves leaked from the portable electronic device and provides an external housing and a portable electronic device for electrical contact between the antenna disposed in the external housing and the internal circuit board. A conductive elastic part such as a conductive gasket or a conductive contactor is used between the internal circuit boards of the electronic device.

However, since the conductive elastic part can form an electrical path between the external housing and the internal circuit board, when a static electricity having a high voltage instantaneously flows through a conductor such as an outer metal housing, Static electricity may flow into the built-in circuit board through the conductive contactor, thereby damaging a circuit such as an IC. If leakage current generated by the AC power source is transmitted to the external housing along the grounding portion of the circuit, It causes an electric shock which can cause injury to the user.

In addition, when the metal housing is used as an antenna, the conductive gasket or the conductive contactor has a low capacitance, so that the signal is attenuated and transmission of the RF signal is not smooth, so that it is necessary to realize a high capacitance.

A functional element for protecting the user from such static electricity or leakage current is provided together with a conductive gasket or a conductive contactor for connecting the metal housing and the circuit board, There is a need for a functional contactor having various functions for protecting a circuit in a portable electronic device or for smoothly transmitting a communication signal.

Further, in the step of mounting a functional element, which is formed by laminating a conductive elastic part such as a clip-shaped conductor of a relatively small size on an electrode by soldering or by laminating the conductive elastic part by soldering, onto the circuit board by secondary soldering, Since the solder exists in a liquid phase, the conductive elastic part is not fixed and a large amount of defects occur as the position is changed.

KR 2007-0109332A (Released Nov. 15, 2007)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a method of aligning a conductive elastic part in a precise position even when soldering is performed for bonding with a functional device or mounting of a circuit board It is an object of the present invention to provide a functional contactor.

In order to solve the above-mentioned problems, the present invention provides a connector comprising: a clip-shaped conductor having an elastic force to be electrically contacted with a conductor of an electronic device; And a functional element electrically connected in series to the clip-shaped conductor through the solder and having a first electrode and a second electrode on an upper surface and a lower surface, respectively. Here, the functional element is provided with a projection on a part of the upper surface thereof so as to align the position of the clip-shaped conductor, and the clip-shaped conductor has a groove portion corresponding to the projection on a lower surface thereof so as to be engaged with the functional element.

According to a preferred embodiment of the present invention, the groove portion may be spaced apart from the bending portion having the elastic force of the clip-shaped conductor at regular intervals.

In addition, the side surface of the protrusion connecting the upper surface of the protrusion and the upper surface of the functional device may be inclined at an acute angle.

Further, the thickness of the projecting portion may be at least two times the thickness of the lower surface of the clip-shaped conductor.

The thickness of the projecting portion may be equal to or less than 1/5 of the height of the bent portion having the elastic force of the clip-shaped conductor.

The groove and the protrusion may be spaced apart from each other by a predetermined distance.

Further, the groove portion and the protruding portion may be formed to abut each other.

Further, the groove portion can be formed by punching.

In addition, the first electrode may be formed on the upper surface of the protrusion.

In addition, the functional element may be formed on the entire lower surface of the second electrode.

The functional device may include an electric shock prevention function for interrupting a leakage current of an external power source flowing from the ground of the circuit board of the electronic device, a communication signal for passing a communication signal flowing into the conductive case of the electronic device, And an ESD protection function for allowing the static electricity to pass therethrough without causing dielectric breakdown when the static electricity is supplied from the conductive case.

On the other hand, the present invention relates to a clip-shaped conductor having an elastic force for electrically contacting a conductor of an electronic device; And a functional element electrically connected in series to the clip-shaped conductor through the solder and having a first electrode and a second electrode on an upper surface and a lower surface, respectively. Here, the functional element is provided with a receiving portion in a part of its upper surface so as to align the position of the clip-shaped conductor, and the clip-shaped conductor is formed with an inserting portion corresponding to the receiving portion on the lower surface thereof so as to be engaged with the functional element .

According to the present invention, when the protruding portion is provided on a part of the upper surface of the functional device and the groove portion corresponding to the protruding portion is provided on the lower surface of the clip shaped conductor, when the clip shaped conductor is laminated on the functional device by soldering, It is possible to arrange it at the correct position, thereby preventing the clip-shaped conductor from being tilted so as to prevent electrical or mechanical defects, and therefore, it is possible to stably engage and improve the precision and reliability of the product.

Further, in the present invention, a protruding portion of a functional element is inserted into a groove portion of a clip-shaped conductor, and a clip-shaped conductor is engaged with the functional element, so that a clip-shaped conductor is coupled to the functional element by soldering or the functional contactor is soldered When mounted on a circuit board, it is possible to prevent clip-shaped conductors from being shaken by molten liquid solder in one or two reflow processes by restraining a clip-shaped conductor. Therefore, the soldering process Can be stably and easily performed, and the production efficiency can be improved.

1 is a front view of a functional contactor according to an embodiment of the present invention;
FIG. 2 is an exploded perspective view showing a functional contactor according to an embodiment of the present invention, FIG.
Figure 3 is a cross-sectional view of the functional element of Figure 1,
FIG. 4 is a perspective view illustrating a process of forming a groove in a clip-shaped conductor during a manufacturing process of a functional contactor according to an embodiment of the present invention;
5 is a perspective view illustrating a state in which a groove is formed in a clip-shaped conductor during a manufacturing process of a functional contactor according to an embodiment of the present invention,
6 is an exploded cross-sectional view showing another example of the functional contactor according to one embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

The functional contactor 100 according to an embodiment of the present invention includes a clip-shaped conductor 110 and a functional device 120, as shown in FIGS. 1 and 2.

Such a functional contactor 100 is for electrically connecting a conductive case such as an external metal case to a circuit board or a conductive bracket electrically coupled to a circuit board on one side in a portable electronic device.

Such a functional contactor 100 is configured such that the clip-shaped conductor 110 is in contact with the circuit board or the conductive bracket and the functional element 120 can be coupled to the conductive case, And the functional device 120 may be coupled to the circuit board.

For example, if the functional contactor 100 is of the SMT type, i.e., coupled through soldering, then the functional element 120 is coupled to the circuit board, and if it is an adhesive layer type, , The functional device 120 may be coupled to the conductive case.

Meanwhile, the portable electronic device may be a portable terminal such as a smart phone, a cellular phone, and the like, and may be a smart watch, a digital camera, a DMB, an electronic book, a netbook, a tablet PC, Such electronic devices may comprise any suitable electronic components including antenna structures for communication with external devices.

Here, the conductive case may be an antenna for communication between the portable electronic device and an external device. Such a conductive case may be provided, for example, to partially surround or partially surround the sides of the portable electronic device.

The clip-shaped conductor 110 is in electrical contact with the conductor of the electronic device and has an elastic force. In one example, the clip shaped conductor 110 may be in electrical contact with either the circuit board of the electronic device, the bracket coupled to the circuit board, and the human contactable conductor, such as a case.

Here, when the clip-shaped conductor 110 is in contact with the conductor, the clip-shaped conductor 110 can be contracted toward the functional device 120 by the pressing force, and when the conductor is separated, Can be restored to its original state.

On the other hand, when the clip-shaped conductor 110 is pressed, galvanic corrosion occurs due to a potential difference between dissimilar metals. At this time, in order to minimize galvanic corrosion, it is preferable that the contact area of the clip-shaped conductor 110 is reduced.

The clip-shaped conductor 110 is formed with a groove 114 corresponding to the protruding portion 121 of the functional device 120 on its lower surface so as to be engaged with the functional device 120. That is, the clip-shaped conductor 110 has the groove portion 114 formed on the lower surface of the terminal portion 113.

At this time, the groove portion 114 may be spaced apart from the bent portion 112 having the elastic force of the clip-shaped conductor 110 by a predetermined distance d. That is, if the distance between the groove 114 and the bending portion 112 is too close, the supporting length of the bending portion 112 can not be sufficiently secured, And may be spaced apart from the bent portion 112 at regular intervals.

The groove 114 has a shape corresponding to the protrusion 121 of the functional device 120, which will be described later. That is, the groove 114 may be recessed upward from the lower surface of the terminal portion 113, and may be formed such that the side surface thereof is inclined at a substantially acute angle.

The depth of the groove portion 114 may be twice or more the thickness of the terminal portion 113 corresponding to the thickness of the protruding portion 121. [ Thereby, it is possible to secure a sufficient force to engage the clip-shaped conductor 110 with the functional element 120. [

In addition, the depth of the groove 114 may be less than 1/5 of the height of the bending portion 112. That is, if the depth of the groove 114 is too large, the distance h between the upper portion connected to the contact portion 111 in the bent portion 112 and the groove 114 decreases, Is limited, it does not provide sufficient elasticity. The depth of the groove portion 114 is set to 1/5 or less of the height of the bending portion 112 so that the distance h between the upper side of the bending portion 112 and the groove portion 114 is sufficiently secured in order to secure sufficient elasticity .

These grooves 114 may be formed by punch 11 as shown in Figs. 4 and 5. For example, the groove 114 may be formed by a punch 11 having a pattern 12 having a shape corresponding to the groove 114.

That is, the terminal portion 113, which is the lower surface of the clip-shaped conductor 110, is disposed so as to face the punch 11 and the terminal portion 113 is pressed by the punch 11, As shown in FIG.

By forming the groove portion 114 on the lower surface of the clip-shaped conductor 110 by the punch 11, the clip-shaped conductor is not changed to provide the groove portion, and the conventional clip- The manufacturing cost can be reduced by omitting processes such as design and manufacturing process change.

The clip-shaped conductor 110 has one side thereof contacting the conductor and the other side electrically connected to the functional device 120 and includes a contact portion 111, a bent portion 112 and a terminal portion 113 .

Here, the clip-shaped conductor may be a C-clip having a roughly "C" shape. Since the clip-shaped conductor 110 is in line contact or point contact, galvanic corrosion resistance can be excellent.

The contact portion 111 has a hook-shaped curved portion and can be in electrical contact with the conductor. The bent portion 112 extends from the contact portion 111 in a round shape and can have an elastic force. The terminal portion 113 may extend from the bent portion 112 to the lower side of the contact portion 111 and may be a terminal electrically connected to the functional device 120.

The contact portion 111, the bent portion 112, and the terminal portion 113 may be integrally formed of a conductive material having an elastic force.

The functional device 120 is electrically connected in series to the clip-shaped conductor 110 through the solder, and includes a first electrode 123 and a second electrode 124 on the upper surface and the lower surface, respectively.

The functional element 120 is provided with a protrusion 121 on a part of its upper surface 122 so as to align the position of the clip-shaped conductor 110.

At this time, the protrusion 121 may be provided at approximately the center of the functional device 120. In order to ensure sufficient elasticity, the groove portion 114 and the bent portion 112 of the clip-shaped conductor 110 are spaced apart from each other by a predetermined distance. Therefore, the protruding portion 121 is slightly offset from the center of the upper surface 122 to one side .

The protrusion 121 may be formed such that a side surface 121a connecting the upper surface of the protrusion 121 and the upper surface 122 of the functional device 120 is inclined at an acute angle. That is, since the shape of the groove 114 corresponding to the protruding portion 121 is limited in order to use the conventional product without changing the design of the clip-shaped conductor 110, the groove 114 can be easily processed A protrusion 121 is provided.

Particularly, when the groove 114 is machined by the punch 11, the side surface of the groove 114 is formed to be inclined in consideration of the convenience of machining. Therefore, the side surface 121a of the projecting portion 121 may be inclined have. That is, the protruding portion 121 may have a side surface 121a inclined from the upper surface 122 of the functional device 120 in four directions.

The thickness t of the projecting portion 121 may be twice or more the thickness of the terminal portion 113 constituting the lower surface of the clip-shaped conductor 110. The thickness t of the protruding portion 121 inserted into the groove portion 114 of the clip-shaped conductor 110 is set so that the clip-shaped conductor 110 is engaged with the functional element 120 with sufficient force, May be at least two times as thick as the thickness of the light emitting layer (113).

The thickness t of the protrusion 121 may be less than 1/5 of the height of the bent portion 112 of the clip-shaped conductor 110. The thickness t of the protruding portion 121 is set to be equal to or greater than the height of the bending portion 112 so that the distance h between the upper side of the bending portion 112 and the groove portion 114 is sufficiently secured in order to secure sufficient elasticity, Lt; / RTI >

At this time, the protrusion 121 and the groove 114 may be separated from each other by a predetermined distance. As a result, the degree of freedom in the accuracy of the process for forming the projecting portion 121 or the groove portion 114 can be improved. That is, even if the projections 121 and the grooves 114 are formed using a process having a low precision, the thickness t of the projections 121 and the depth of the grooves 114 are sufficiently secured, 114, it is possible to achieve the constraint of the clip-shaped conductor 110 during soldering. At this time, it is needless to say that the gap between the protrusion 121 and the groove 114 should be smaller than the position alignment error of the clip-shaped conductor 110.

Alternatively, the protrusion 121 and the groove 114 may be formed to abut each other. That is, when the process for forming the protruding portion 121 and the groove portion 114 can be adjusted to a minute tolerance and the accuracy is high, the protruding portion 121 and the groove portion 114 are formed to substantially abut each other, (110) and the functional device (120) are combined by a sufficient engaging force, it is possible to improve the positional accuracy of the clip-shaped conductor (110) and prevent the distortion.

Since the protrusion 121 is provided on a part of the upper surface 122 of the functional element 120 and the groove 114 is provided on the lower surface of the clip-shaped conductor 110, the function of the clip- The conductor 110 of the clip shape can be aligned at an accurate position and the structure of the clip shape of the conductor 110 by the engagement structure of the conductor 110 and the functional device 120 Since the flow of the conductor 110 is restricted, it is possible to prevent the clip 110 from being distorted by the melted liquid solder, thereby preventing electrical or mechanical defects in the SMT soldering process.

Moreover, since the clip-shaped conductor 110 is not aligned at the correct position on the first electrode 123 of the functional device 120 due to the pick-up error in the process, the clip-shaped conductor 110 is displaced from the correct position And the load is concentrated on the wrong portion, which often causes cracking of the functional device 120. [ In order to solve such a problem, an alignment technique is a key element. In the embodiment of the present invention, the clip-shaped conductor 110 is restrained by the engagement structure of the clip-shaped conductor 110 and the functional element 120, It is possible to stably bond the clip-shaped conductor 110 to the functional device 120, thereby improving the accuracy and reliability of the product.

When the functional contactor 100 is coupled to the circuit board or the like by soldering by restraining the clip-shaped conductor 110 by the engagement structure of the clip-shaped conductor 110 and the functional device 120, that is, Even when the solder between the clip-shaped conductor 110 and the functional device 120 melts and changes its state to a liquid state, the flow of the clip-shaped conductor 110 is restrained even in the two reflow processes, It is possible to prevent the clip-shaped conductor 110 from being shaken by the soldering process, thereby performing the soldering process stably and easily.

Further, in the SMT process for coupling the clip-shaped conductor 110 to the functional device 120, no extra effort is required to align the clip-shaped conductor 110, which shortens the process time and reduces the manufacturing cost The production efficiency can be improved.

The first electrode 123 may be formed on the upper surface of the protrusion 121. As a result, the first electrode 123 can stably ensure electrical series connection with the clip-shaped conductor 110. At this time, no electrode is formed on the side surface 121a of the protrusion 121, thereby providing a function of partially suppressing the flow of the melted liquid solder, thereby further preventing the clip-shaped conductor 110 from being shaken by the liquid solder .

Alternatively, the first electrode 123 may be formed on the upper surface of the protrusion 121 and on the upper surface 122 of the functional device 120 to increase the capacitance of the capacitance. Alternatively, the first electrode 123 may be formed on the side surface 121a of the protrusion 121 as well. The first electrode 123 may be integrally formed on the upper surface of the functional device 120 and on the side surface 121a and the upper surface of the protrusion 121 by coating or the like.

The first electrode 123 is laminated with the clip-shaped conductor 110 through the solder. That is, the first electrode 123 can be laminated with the clip-shaped conductor 110 by the SMT soldering process.

The second electrode 124 may be formed on the entire lower surface. That is, the second electrode 124 is integrally provided on the entire lower surface of the functional device 120.

This second electrode 124 may be coupled to the circuit board via soldering or to a conductor such as a conductive case through a conductive adhesive layer.

Here, the functional device 120 may have a function for protecting a user or an internal circuit. In one example, the functional device 120 may include at least one of an electric shock protection device, a varistor, a suppressor, a diode, and a capacitor.

That is, the functional device 120 can block the leakage current of the external power source flowing into the conductor from the ground of the circuit board. At this time, the functional device 120 may be configured such that the breakdown voltage Vbr or the breakdown voltage thereof is larger than the rated voltage of the external power supply of the electronic device. Here, the rated voltage may be a standard rated voltage for each country, for example, 240V, 110V, 220V, 120V, and 100V.

In addition, when the conductive case has an antenna function, the first electrode 123 and the second electrode 124 provided on the top and bottom surfaces of the functional device 120 function as a capacitor, thereby blocking the leakage current of the external power source And a communication signal flowing from the conductor or the circuit board can be passed.

Further, the functional device 120 can pass the electrostatic discharge (ESD) flowing from the conductive case without being broken. At this time, the functional device 120 may be configured such that the breakdown voltage Vbr thereof is smaller than the dielectric breakdown voltage Vcp of the body that is provided between the first electrode 123 and the second electrode 124.

Therefore, the functional contactor 100 electrically connects the conductive case and the circuit board with respect to a communication signal, an electrostatic discharge (ESD), and the like, and passes the leakage current of the external power source from the circuit board to the conductive case .

On the other hand, the projecting portion of the clip-shaped conductor and the groove portion of the functional device can be provided opposite to each other. 5, the functional element 220 is provided with a receiving portion 125 on a part of its upper surface so as to align the position of the clip-shaped conductor 210, and the clip- An insertion portion 114 'corresponding to the receiving portion 125 is formed on the lower surface thereof so as to be engaged with the functional device 220. At this time, the first electrode 123 may be formed on the bottom surface of the receiving portion 125.

More specifically, the receiving portion 125 may be recessed downwardly at an acute angle with the upper surface 122 of the functional device 220 and the side connecting the bottom surface thereof. The insertion portion 114 'may be inserted and fixed in the receiving portion 125.

The inserting portion 114 'may be formed to be downwardly protruded from the lower surface of the terminal portion 113, and may be formed with an inclined side surface at a substantially acute angle. The insertion portion 114 'may be formed by punching, similarly to the groove portion 114.

Although not described in detail herein, the shape and the functional characteristics of the receiving portion 215 of the functional device 220 and the insertion portion 114 'of the clip-shaped conductor 210 are the same as those of the top surface 122 of the functional device 220, It is to be understood that the shape and the functional characteristic of the protrusion 121 and the groove 114 of FIG. 1 are the same as those of the protrusion 121 and the groove 114, except that the terminal portion 113 is formed in a direction opposite to that of FIG. 1 .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: functional contactor 110: clip-shaped conductor
111: contact portion 112:
113: bending section 114:
114 ': Insertion part 120: Functional element
121: protruding portion 121a:
122: upper surface 123: first electrode
124: second electrode 125:

Claims (12)

A conductor having elasticity to contact the conductor of the electronic device; And
And a functional element connected to the elastic conductor and having a first electrode and a second electrode on an upper surface and a lower surface, respectively,
Wherein the functional element is provided with a protrusion on a part of its upper surface so as to align the position of the conductor having elasticity, the conductor having elasticity has a groove corresponding to the protrusion of the functional element,
Wherein a first electrode of the functional element is formed on an upper surface of the protrusion. The method according to claim 1,
Wherein the groove portion is spaced apart from the bent portion that gives elasticity to the elastic conductor. The method according to claim 1,
And a side surface of the protrusion connecting the upper surface of the protrusion and the upper surface of the functional device is formed to be inclined at an acute angle. A conductor having elasticity to contact the conductor of the electronic device; And
And a functional element connected to the elastic conductor and having a first electrode and a second electrode on an upper surface and a lower surface, respectively,
Wherein the functional element is provided with a protrusion on a part of its upper surface so as to align the position of the conductor having elasticity, the conductor having elasticity has a groove corresponding to the protrusion of the functional element,
Wherein the thickness of the projecting portion is at least twice the thickness of the terminal portion of the elastic conductive material. A conductor having elasticity to contact the conductor of the electronic device; And
And a functional element connected to the elastic conductor and having a first electrode and a second electrode on an upper surface and a lower surface, respectively,
Wherein the functional element is provided with a protrusion on a part of its upper surface so as to align the position of the conductor having elasticity, the conductor having elasticity has a groove corresponding to the protrusion of the functional element,
Wherein the thickness of the projecting portion is 1/5 or less of the height of the bent portion of the elastic conductor. A conductor having elasticity to contact the conductor of the electronic device; And
And a functional element connected to the elastic conductor and having a first electrode and a second electrode on an upper surface and a lower surface, respectively,
Wherein the functional element is provided with a protrusion on a part of its upper surface so as to align the position of the conductor having elasticity, the conductor having elasticity has a groove corresponding to the protrusion of the functional element,
Wherein the groove portion and the protruding portion are spaced apart at a predetermined interval. A conductor having elasticity to contact the conductor of the electronic device; And
And a functional element connected to the elastic conductor and having a first electrode and a second electrode on an upper surface and a lower surface, respectively,
Wherein the functional element is provided with a protrusion on a part of its upper surface so as to align the position of the conductor having elasticity, the conductor having elasticity has a groove corresponding to the protrusion of the functional element,
And the groove portion and the protruding portion are formed to abut each other. 8. The method according to any one of claims 1 to 7,
And the functional conductor and the functional conductor are connected by solder. delete A conductor having elasticity to contact the conductor of the electronic device; And
And a functional element connected to the elastic conductor and having a first electrode and a second electrode on an upper surface and a lower surface, respectively,
Wherein the functional element is provided with a protrusion on a part of its upper surface so as to align the position of the conductor having elasticity, the conductor having elasticity has a groove corresponding to the protrusion of the functional element,
And the second electrode of the functional device is formed on the entire lower surface of the functional device. 11. The method according to any one of claims 1 to 7 and 10,
Wherein the functional device is provided with an electric shock prevention function for interrupting a leakage current of an external power source flowing from a ground of a circuit board of the electronic device, a communication signal transmission function for passing a communication signal flowing from the conductive case of the electronic device or the circuit board And an ESD protection function for allowing static electricity to flow from the conductive case through discharge. A conductor having elasticity to contact the conductor of the electronic device; And
And a functional element connected to the elastic conductor by solder and having a first electrode and a second electrode on an upper surface and a lower surface, respectively,
Wherein the functional element is provided with a receiving portion in a part of the upper surface thereof so as to align the position of the conductor having elasticity and the elastic conductor has an insertion portion corresponding to the receiving portion of the functional element,
Wherein the first electrode is formed on a bottom surface of the accommodating portion, and the second electrode is formed on the entire lower surface of the functional device.

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