KR20170046480A - Circuit protection device and mobile electronic device with the same - Google Patents

Abstract

An electric shock protection device and a portable electronic device having the same are provided. An electric shock protection device according to an exemplary embodiment of the present invention is an electric shock protection device disposed between a human contactable conductor of an electronic device and an internal circuit portion, the electric shock protection device comprising: an electric shock protection portion; And a capacitor unit including a first element body having a dielectric constant of 20 F / m or more so as to pass a communication signal that is electrically connected in parallel with the electric shock protection unit to pass communication signals from the electric conductor and to prevent attenuation of a communication signal passing therethrough Vb > Vin is satisfied so that static electricity is passed through the conductor without causing dielectric breakdown when the static electricity flows from the conductor, and leakage current of the external power source flowing from the ground of the circuit portion is blocked. Here, Vbr is the breakdown voltage of the electric shock protection element, and Vin is the rated voltage of the external power supply of the electronic device. According to this structure, in the portable electronic device in which the conductor such as the metal case is exposed to the outside, by providing the electric shock protection element that connects the electric conductor and the circuit portion, the user and the internal circuit are protected from the leakage current and static electricity caused by the external power source and the high capacitance So that attenuation of the communication signal can be minimized and transmitted.

Description

[0001] The present invention relates to an electric shock protection device and a portable electronic device having the same,

The present invention relates to an electric shock protection device and a portable electronic device having the same, and more particularly, to an electric shock protection device that protects a user from a leakage current by a power source, protects an internal circuit from external static electricity, minimizes attenuation of a communication signal, And a portable electronic device having the same.

Recently, the adoption of a metal-made housing has been increasing in order to improve aesthetics and robustness of portable electronic devices.

However, since the metal housing is excellent in electrical conductivity due to the nature of the material, an electrical path can be formed between the housing and the built-in circuit depending on the specific device or depending on the location. Particularly, since the metal housing and the circuit part form a loop, when a static electricity having a high voltage instantaneously flows through a conductor such as a metal housing having a large exposed surface area, the circuit part such as an IC can be damaged, Measures are required.

On the other hand, such a portable electronic device typically uses a charger to charge the battery. Such a charger rectifies an external AC power source to a DC power source and then through a transformer to a low DC power source suitable for a portable electronic device. Here, in order to enhance the electrical insulation of the transformer, a Y-CAP composed of a capacitor is provided at both ends of the transformer.

However, when the Y-CAP does not have the normal characteristics, such as a non-genuine charger, the DC power may not be sufficiently blocked by the Y-CAP, and furthermore, a leakage current may be generated by the AC power. As shown in FIG.

Such a leakage current can be transmitted to a conductor that can be contacted with a human body as in an external case of a portable electronic device. As a result, the user can give an unpleasant feeling of crushing and, in severe cases, You can wear it.

Therefore, a portable electronic device such as a cellular phone employing a metal case is required to protect the user from such a leakage current.

Meanwhile, the portable electronic device having the metal-made housing has a plurality of antennas according to function, and at least a part of the antennas is an internal antenna. The portable electronic device is disposed in the external housing of the portable electronic device, It is a tendency to use it as an antenna.

In such a case, the antenna and the internal circuit of the portable electronic device must be connected. At this time, the communication signal must be smoothly transmitted to the internal circuit without attenuation.

However, as described above, when the capacitance of a corresponding device is increased to effectively transmit a communication signal, there is a problem that the device is destroyed by external static electricity and thus the device is damaged.

Furthermore, as described above, it is difficult to realize the implementation of a high breakdown voltage for interrupting the leakage current due to the external power supply and the implementation of the high capacity capacitance for transmitting the communication signal, because of the opposite effect. Therefore, there is a demand for a protection against static electricity, a prevention of leakage current, and a high capacitance at the same time.

KR 0573364 B

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and provides an electric shock protection device capable of protecting an internal circuit and / It is an object to provide an electronic device.

In order to solve the above-mentioned problems, an electric shock protection element disposed between a human contactable conductor of an electronic device and a built-in circuit, comprising: an electric shock protection unit; And a capacitor portion including a first element body having a dielectric constant of 20 F / m or more so as to pass a communication signal coming from the conductor and to prevent attenuation of a communication signal passing therethrough, And the leakage current of the external power source flowing from the ground of the circuit part is cut off.

Vbr > Vin where Vbr is the breakdown voltage of the electric shock protection element, and Vin is the rated voltage of the external power supply of the electronic device.

In addition, the rated voltage may be a national standard rated voltage.

Also, Vcp > Vbr, where Vcp may be the dielectric breakdown voltage of the capacitor portion.

In addition, the communication signal may have a wireless communication frequency band.

The electric shock protection unit may include at least one pair of internal electrodes disposed at a predetermined distance in the second main body and the second main body and a gap formed between the pair of internal electrodes, It is possible to arrange the electric element on one side of the first elementary body so that the electric shock protection part is electrically connected in parallel with the capacitor part.

Further, the pair of internal electrodes may be arranged on the same plane.

The gap may include a layer of a discharge material applied to the inner wall at a predetermined thickness along the height direction.

Also, the gap may be provided between the pair of inner electrodes.

Also, the discharge material layer may be formed of a non-conductive material or a semiconductor material including metal particles.

In addition, the discharge material layer may include a first portion that is applied along the height direction of the inner wall of the cavity, a second portion that extends outward from the top of the first portion, and a second portion that extends outward from the bottom of the first portion. Wherein the second portion is in contact with one of the pair of inner electrodes, and the third portion is in contact with the other of the pair of inner electrodes.

In addition, the first and second elementary bodies may include a dielectric.

The internal electrode may include at least one of Ag, Au, Pt, Pd, Ni, and Cu.

The gap between the capacitor portion and the electric shock protection portion may be larger than the interval between the pair of internal electrodes of the electric shock protection portion.

The electric shock protection unit may include a plurality of first internal electrodes disposed in a line within the second elementary body and the second elementary body, and a second internal electrode spaced apart from the first internal electrodes and spaced apart from the first internal electrode, The second elementary body may be disposed on one side of the first elementary body so that the electric shock protection unit is electrically connected in parallel with the capacitor unit.

The breakdown voltage Vbr of the electric shock protection element may be the sum of the unit breakdown voltages formed between the first and second inner electrodes adjacent to each other.

Also, the second internal electrode may be arranged so that a plurality of electrodes are spaced apart in a row, wherein each of the second internal electrodes is disposed so as to overlap at least a part with the first internal electrode, And may be disposed so as not to overlap with the internal electrodes.

The distance L between any two first internal electrodes disposed adjacent to and closest to the second internal electrodes among the plurality of first internal electrodes may be a distance between the first internal electrodes and the second internal electrodes, May be larger than the sum of the shortest distances (d1, d2).

The second element may include at least one of a semiconductive material, a Pr-based material and a Bi-based material including at least one of ZnO, SrTiO ₃ , BaTiO ₃ and SiC.

The distance between the capacitor portion and the electric shock protection portion may be a distance between the first inner electrode and the second inner electrode, which is disposed adjacent to the second inner electrode of the plurality of first inner electrodes, d1, d2).

In addition, the first prism may include a dielectric.

On the other hand, human contactable conductors; Circuitry; And an electric shock protection device disposed between the electric conductor and the circuit part, wherein the electric shock protection device includes an electric shock protection part, and a first body having a dielectric constant of 20 F / m or more to pass the communication signal flowing from the electric conductor without attenuation Wherein the electrostatic discharge protection circuit is configured to pass the static electricity without being destroyed by insulation when the static electricity flows into the electric conductor from the electric conductor and cut off the leakage current of the external power supplied from the ground of the circuit portion, The electronic device having an electric shock protection function that satisfies the following expression.

Vbr> Vin, Vcp> Vbr

Here, Vbr is the breakdown voltage of the electric shock protection element, Vin is the rated voltage of the external power supply of the electronic device, and Vcp is the breakdown voltage of the capacitor portion.

In addition, the conductor may include at least one of an antenna, a metal case, and conductive ornaments for communication between the electronic device and an external device.

In addition, the metal case may be provided to partially surround or entirely surround the side of the housing of the electronic device.

In addition, the metal case may be provided to surround the camera, which is exposed to the outside on the front surface or the rear surface of the housing of the electronic device.

According to another aspect of the present invention, there is provided an electronic device, which is disposed between a body contactable conductor of an electronic device and a built-in circuit portion, the static electricity passing through the conductor, An electric shock protection unit for shutting off an electric current; And a capacitor portion including a first element body having a dielectric constant of 20 F / m or more to allow a communication signal flowing from the conductor to pass without attenuation, wherein the capacitor element satisfies the following equation.

Vbr> Vin, Vcp> Vbr

Here, Vbr is the breakdown voltage of the electric shock protection element, Vin is the rated voltage of the external power supply of the electronic device, and Vcp is the breakdown voltage of the capacitor portion.

The electric shock protection unit may include a second body; At least a pair of internal electrodes disposed at predetermined intervals in the inside of the second elementary body; And a gap formed between the pair of inner electrodes, and the second elementary body may be disposed on one side of the first elementary body so that the electric shock protection unit is electrically connected in parallel with the capacitor unit.

Alternatively, the electric shock protection portion may include: a second body; A plurality of first internal electrodes arranged in a line in the second main body; And a second internal electrode spaced apart from the plurality of first internal electrodes, wherein the second main body is disposed on one side of the first main body so that the electric shock protection unit is electrically connected in parallel with the capacitor unit .

The capacitor unit may include at least one of the upper and lower portions of the electric shock protection unit, or at least one of the upper and lower portions of the electric shock protection unit at regular intervals.

An electric shock protection device and a portable electronic device having the same according to an embodiment of the present invention include an electric shock protection device for connecting a conductor and a circuit portion in a portable electronic device in which a conductor such as a metal case is exposed to the outside, It protects the user and internal circuits from leakage current and static electricity and realizes high capacitance, minimizing the attenuation of the communication signal and delivering it.

1 is a schematic view illustrating an electric shock protection device according to an embodiment of the present invention;
FIGS. 2A to 2E are conceptual diagrams illustrating application examples of an electric shock protection device according to an embodiment of the present invention,
FIGS. 3A to 3C are schematic circuit diagrams for explaining operations of (a) leakage current, (b) static electricity (ESD), and (c) communication signals of the electric shock protection device according to the embodiment of the present invention,
4A and 4B show simulation results of the pass frequency band according to the capacitance,
FIGS. 5A to 5C are diagrams illustrating an example of an electric shock protection device according to an embodiment of the present invention, in which the electric shock protection device is provided with a surge protection type electric shock protection device,
6 is a view showing another example of an electric shock protection device according to an embodiment of the present invention,
7A to 7C are diagrams illustrating still another example of an electric shock protection device according to an embodiment of the present invention, in which an electric shock protection device having a varistor type electric shock protection unit is shown,
8A and 8B are cross-sectional views of an electric shock protection unit included in an electric shock protection device according to an embodiment of the present invention. In FIGS. 8A and 8B, a distance between first internal electrodes and a distance between a first internal electrode and a second internal electrode And the shortest distance between them.

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 electric shock protection device 100 according to an embodiment of the present invention may be disposed between the human contactable conductor 12 of the electronic device and the internal circuit portion 14 as shown in FIG.

The electric shock protection element 100 includes an electric shock protection unit; And a capacitor unit including a first element body having a dielectric constant of 20 F / m or more so as to pass a communication signal that is electrically connected in parallel with the electric shock protection unit to pass communication signals from the electric conductor and to prevent attenuation of a communication signal passing therethrough And is configured to pass the static electricity without breaking the insulation when the static electricity flows from the conductor (12), cut off the leakage current of the external power supplied from the ground of the circuit part (14) Lt; RTI ID = 0.0 > Vb < / RTI > that satisfies the equation:

Vbr> Vin, Vcp> Vbr

Where Vin is the rated voltage of the external power supply of the electronic device, and Vcp is the dielectric breakdown voltage of the capacitor portion.

At this time, the rated voltage may be a standard rated voltage for each country, for example, 240V, 110V, 220V, 120V, 110V, and 100V.

The breakdown voltage Vbr may be a breaker voltage or a trigger voltage of a varistor or a surge suppressor. The breakdown voltage Vbr may be applied to a varistor or a capacitor, Or the spacing of the inner electrodes of the supporter, the area of the inner electrode overlapped with each other, the dielectric constant of the laminated sheet layer, the pore volume between the inner electrodes, the particle size of the discharge material layer, the varistor material, Can be determined.

Such an electric shock protection element 100 may be disposed between the conductor 12 and the circuit portion 14, such as an external metal case, in the portable electronic device 10, as shown in Fig.

Here, the portable electronic device 10 may be in the form of a portable electronic device that is portable and portable. For example, 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. In addition, it may be a device using local area network communication such as Wi-Fi and Bluetooth.

Such a portable electronic device 10 may be made of conductive materials such as metal (aluminum, stainless steel, etc.) or carbon-fiber composite materials or other fiber-based composites, glass, ceramics, plastic, . ≪ / RTI >

At this time, the housing of the portable electronic device 10 may include a conductor 12 made of metal and exposed to the outside. Here, the conductor 12 may include at least one of an antenna for communication between the electronic device and an external device, a metal case, and conductive ornaments.

In particular, the metal case may be provided to partially surround or entirely surround the side of the housing of the portable electronic device 10. In addition, the metal case may be provided to surround the camera, which is exposed to the outside on the front surface or the rear surface of the housing of the electronic device.

As such, the electric shock protection element 100 may be disposed between the human contactable conductor 12 of the portable electronic device 10 and the circuit portion 14 to protect the internal circuit from leakage current and static electricity.

Such an anti-electrostatic device 100 may be suitably provided in accordance with the number of metal cases provided in the housing of the portable electronic device 10. [ However, when a plurality of metal cases are provided, each of the metal cases 12a, 12b, 12c, and 12d may be embedded in the housing of the portable electronic device 10 such that the anti- have.

That is, when the conductor 12 such as the metal case surrounding the side of the housing of the portable electronic device 10 is composed of three parts as shown in Fig. 2A, each of the conductors 12a, 12b, 12c, and 12d All of which are connected to the anti-shock device 100, thereby protecting the circuit inside the portable electronic device 10 from leakage current and static electricity.

When the plurality of metal cases 12a, 12b, 12c and 12d are provided, the anti-shock device 100 may be provided in various ways according to the roles of the metal cases 12a, 12b, 12c and 12d. have.

For example, when the camera of the portable electronic device 10 is exposed to the outside, when the anti-shock device 100 is applied to the conductor 12d surrounding the camera, the anti-shock device 100 May be provided in a form that blocks the leakage current and protects the internal circuit from static electricity.

In addition, when the metal case 12b serves as a ground, the anti-shock device 100 may be connected to the metal case 12b to shield the leakage current and protect the internal circuit from static electricity .

On the other hand, as shown in FIG. 2B, the electric shock protection device 100 may be disposed between the metal case 12 'and the circuit board 14'. At this time, since the electric shock protection element 100 is for passing static electricity without damaging itself, the circuit board 14 'may have a separate protection element 16 for bypassing the static electricity to the ground. Here, the protection element 16 may be a suppressor or a varistor.

2C, the electric shock protection device 100 may be disposed between a metal case 12 'and a front end module (FFM) 14a through a matching circuit (for example, R and L components) have. Here, the metal case 12 'may be an antenna. At this time, the electric shock protection element 100 is to pass the communication signal without attenuation, to pass the static electricity from the metal case 12 ', and to block the leakage current flowing from the ground through the matching circuit.

As shown in FIG. 2D, the electric shock protection device 100 may be disposed between a metal case 12 'having an antenna and an IC 14c implementing a communication function through the antenna. Here, the corresponding communication function may be NFC communication. At this time, since the electric shock protection element 100 is for passing the static electricity without damaging itself, it may be provided with a separate protection element 16 for bypassing the static electricity to the ground. Here, the protection element 16 may be a suppressor or a varistor.

As shown in FIG. 2E, the electric shock protection element 100 may be disposed between the short pin 22 of the PIFA (Planar Inverted F Antenna) antenna 20 and the matching circuit. At this time, the electric shock protection element 100 is to pass the communication signal without attenuation, to pass the static electricity from the metal case 12 ', and to block the leakage current flowing from the ground through the matching circuit.

As shown in Figs. 3A to 3C, the electric shock protection device 100 may have different functions depending on a leakage current due to an external power source, a static electricity flowing from the electric conductor 12, and a communication signal.

3A, when the leakage current of the external power source is introduced into the conductor 12 through the circuit board of the circuit unit 14, for example, the ground, the electric shock protection element 100 has its breakdown voltage (Vbr) is larger than the overvoltage due to the leakage current, it can be kept open. That is, since the breakdown voltage Vbr of the electric shock protection element 100 is larger than the rated voltage of the external power source of the portable electronic device, the human body contactable conductor 12, such as a metal case, It is possible to prevent the leakage current from being transmitted.

At this time, the capacitor portion provided in the electric shock protection device 100 can block the DC component included in the leakage current, and since the leakage current has a relatively low frequency as compared with the wireless communication band, the capacitor portion acts with a large impedance with respect to the frequency Leakage current can be blocked.

As a result, the electric shock protection element 100 can protect the user from electric shock by interrupting the leakage current caused by the external power source flowing from the ground of the circuit portion 14.

3B, when the static electricity flows from the outside through the conductor 12, the electric shock protection element 100 functions as an electrostatic protection element such as a suppressor or a varistor. That is, in the case of the varistor, when the breakdown voltage Vbr of the varistor is smaller than the instantaneous voltage of the static electricity, the electric shock protection element 100 is electrically conducted to allow the static electricity to pass therethrough. In the case of the surpressor, Since the operating voltage is smaller than the instantaneous voltage of the static electricity, the static electricity can be passed by the instantaneous discharge. As a result, the electric shock protection element 100 can lower the electrical resistance when the static electricity flows from the conductor 12, so that the static electricity can pass without being electrically broken.

At this time, since the dielectric breakdown voltage Vcp of the capacitor portion provided in the electric shock protection device 100 is larger than the breakdown voltage Vbr of the varistor or the suppressor, the static electricity does not flow into the capacitor portions 220a and 220b, Or it can only be passed through surprises.

Here, the circuit unit 14 may have a separate protection element for bypassing the static electricity to the ground. As a result, the electric shock protection element 100 can pass the static electricity without being broken by the static electricity flowing from the electric conductor 12, thereby protecting the inner circuit of the following stage.

Further, as shown in Fig. 3C, when a communication signal is input through the conductor 12, the electric shock protection element 100 functions as a capacitor. That is, the electric shock protection element 100 is kept open in the state of the suppressor or the varistor, so that the conductor 12 and the circuit part 14 are cut off, but the internal capacitor can pass the communication signal. Thus, the capacitor portion of the electric shock protection element 100 can provide the inflow path of the communication signal.

Here, it is preferable that the capacitance of the capacitor unit is set so as to pass the communication signal of the main wireless communication band without attenuation. As shown in Figs. 4A and 4B, according to the result of simulating the pass frequency band according to the capacitance, the mobile radio communication frequency band (700 MHz) for a capacitance of 5 ㎊ or more including the first element body having a permittivity of 40 F / To 2.6 GHz), and exhibits an electrically short circuit phenomenon.

However, as shown in FIG. 4B, it can be seen that the capacitance of the capacitor portion is not influenced by the reception sensitivity during communication at a capacitance of about 20 pF or more, preferably 30 pF or more. In the wireless communication frequency band, it is preferable to use a capacitor including a body having a dielectric constant of 20 F / m or more so that it is easier to realize a high capacitance of 20 F or more. As a result, the electric shock protection element 100 can pass the communication signal flowing from the conductor 12 through the internal capacitor portion with high capacitance without attenuation.

Hereinafter, various embodiments of the electric shock protection device according to the embodiment of the present invention will be described in more detail with reference to FIG. 5 to FIG.

5A to 5C, the electric shock protection device 200 includes a capacitor unit 210 including a second electric element 210, an electric shock protection unit 210 including the second bodies 211, 212 and 213, and a first body 221, 222, 223, 224, 225, 226, 227, (220a, 220b).

The capacitor units 220a and 220b may be electrically connected to the electric shock protection unit 210 in parallel in order to pass a communication signal input from the electric conductor 12 such as an antenna without attenuation. For example, the capacitor portions 220a and 220b may be disposed on at least one of the upper portion and the lower portion or both the upper portion and the lower portion of the electric shock protection portion 210. [ The dielectric breakdown voltage (Vcp) of the capacitor unit is applied to the outside of the electronic device to cut off the leakage current, particularly the DC component, of the external power source flowing from the ground of the circuit unit, May be greater than the rated voltage (Vbr) of the power source. At this time. The dielectric breakdown voltage Vcp of the capacitor portion is formed at both ends of the capacitor electrode included in the capacitor portion. In the case of the capacitor portion where the plurality of capacitor electrodes are disposed apart from each other, the dielectric breakdown voltage is a voltage at which a plurality of capacitor electrodes are connected in parallel And are formed between the respective capacitor electrodes as they are.

A plurality of sheet layers 221, 222, 223, 224, 225, 226, 227, 228 having capacitor electrodes 222a, 223a, 215a, 225a, 226a, 227a, 228a are sequentially stacked on one surface of the capacitor units 220a, 220b, The plurality of electrodes may be arranged so as to face each other, and then the first body may be formed through a sintering or curing process so as to be integrally formed. Alternatively, the first body may be formed by disposing the electrodes so as to have the electrode structures of the capacitor portions 220a and 220b in one sheet, and then sintering or curing the electrode. At this time, the first elementary body may have a dielectric constant of 20 F / m or more, preferably a dielectric constant of 35 F / m or more so as to prevent attenuation of a communication signal passing therethrough, So that the blocking ability of the DC component in the leakage current of the capacitor portion is improved and the breakdown voltage of the external power supply of the electronic device can be higher than that of the external power supply of the electronic device, Or may not be destroyed by static electricity. Further, it may be more advantageous to implement the device so as to be more downsized. If the dielectric constant is less than 20 F / m, there is a problem of attenuating the reception sensitivity of a communication signal in a communication signal, for example, a mobile wireless communication frequency band. In order to realize a capacitor using a low dielectric constant body with a fixed capacitance, the distance between the electrodes must be remarkably narrowed. In this case, if there is a defect (including pores) in the body located between the electrodes, It may be highly undesirable to composite the capacitor unit designed with the electric shock protection unit so that the distance between the electrodes is remarkably narrowed due to the possibility that the dielectric breakdown may be significantly increased. Further, the breakdown of the leakage current and / or the circuit protection function from static electricity may be degraded or lost as the breakdown voltage Vcp of the capacitor becomes lower than the rated voltage of the external power supply of the electronic device and the capacitor portion is destroyed by insulation.

The first elementary bodies 221, 222, 223, 224, 225, 226, 227, and 228 may be made of a dielectric material, and may be used without limitation if the dielectric material satisfies a dielectric constant of 20 F / m or more. For example, the dielectric forming the first body may be formed of a ceramic material and a magnetic material including low temperature sintered ceramics (LTCC) and high temperature sintered ceramics (HTCC). In this case, the ceramic material may be an oxide-based ceramic compound or a non-oxide-based ceramic compound, wherein the oxide-based ceramic compound is _{BeO, MgO, LaCrO 3, PbTiO} 3, (Ba, Pb) TiO 3, ZrO 2, Er 2 O _{3, Dy 2 O 3, Ho} 2 O 3, V 2 O 5, CoO, MoO 3, SnO 2, BaTiO 3, Nd 2 O 3, SiO 2, TiO 2, ZnO, SrTiO 3, LiNbO 3, LiTaO 3, Mn-based oxides, Ni-based oxides, Mn-based oxides, Al ₂ O _3, and solid solutions thereof. The non-oxide ceramic compound may include at least one selected from SiC, CdTe, TiC, TiN, B ₄ C, Si ₃ N ₄ , BN, TiB ₂ and AlN. In addition, the magnetic material may be a ferrite compound, and may be used without limitation in the case of conventional soft ferrite. One or more of Ni-Zn ferrite and Mn-Zn ferrite may be included.

The capacitor electrodes 222a, 223a, 215a, 225a, 226a, 227a and 228a may include any one or more of Ag, Au, Pt, Pd, Ni and Cu. . In addition, the capacitor electrode may be formed in various shapes and patterns, and one or more of the plurality of capacitor electrodes may be provided in the same pattern or may have different patterns. That is, the capacitor electrode is not limited to the pattern of each capacitor electrode when disposed inside the first element so as to realize the desired capacitance.

A plurality of capacitor electrodes 222a, 223a, 215a, 225a, 226a, 227a, and 228a constituting the capacitor units 220a and 220b are formed between a pair of opposing capacitor electrodes, for example, The spacing between the first capacitor electrode 221a and the second capacitor electrode 222a may be in the range of 15 to 100 占 퐉. .

5B, one capacitor electrode 221a is not formed in one sheet layer 221, and one capacitor electrode 221a is formed in one sheet layer (not shown) A plurality of capacitor electrodes (not shown) arranged in a line in a row on the plurality of capacitor electrodes, and a plurality of sheet layers each including a plurality of capacitor sheet electrodes on one surface thereof, They may be arranged to face each other so as to have an overlapping area equal to or larger than the area. For example, the number of capacitor electrodes formed in one sheet layer may be two, the spacing distance may be 50 탆, and one of the two capacitor electrodes may be 120 탆 long and 360 탆 wide, One of the two capacitor electrodes included in one sheet layer may have a length of 1010 mu m and a width of 360 mu m and a total of twelve such sheet layers may be stacked, Layers of the two capacitor electrodes included in the layer were stacked so that the overlapped areas of the long length capacitor electrodes included in the two adjacent sheet layers were alternately stacked so as to have a width of 360 x 840 m in length After sintering, the capacitor part can be realized.

The electric shock protection unit 210 includes a plurality of sheet layers 211, 212 and 213 having internal electrodes 211a and 212a and an air gap forming member 215 on one side thereof, The protective sheet layer 213 is laminated so as to be sandwiched between the sheet layers on which the electrodes are formed and the internal electrodes 211a and 212a provided on one surface of the other two sheet layers are arranged to face each other, And can be integrally formed by forming a body.

The second elementary body may be formed of a dielectric, a specific description thereof is the same as that of the first elementary body, and the dielectric forming the first elementary body and the dielectrics forming the second elementary body may be the same or different.

The internal electrodes 211a and 212a are spaced apart from each other within the second elementary body and may be formed of at least one pair. The internal electrodes 211a and 212a may include any one or more of Ag, Au, Pt, Pd, Ni, and Cu, and the external electrodes 231 and 232 may include any one or more of Ag, Ni, can do.

The first internal electrode 211a and the second internal electrode 212a may be formed in the same pattern or may have different patterns. The internal electrodes 211a and 212a may be formed in various shapes and patterns. . That is, the internal electrodes 211a and 212a are not limited to a specific pattern if the first internal electrode 211a and the second internal electrode 212a are disposed so as to overlap with each other when the first internal electrode 211a and the second internal electrode 212a are opposed to each other.

At this time, the intervals between the internal electrodes 211a and 212a, the areas facing each other, or the lengths overlapping with each other may be configured to satisfy a breakdown voltage Vbr of the supporter 200. For example, The interval between the first and second electrodes 211a and 212a may be 10 to 100 占 퐉.

On the other hand, between the pair of electrodes 211a and 212a corresponding to each other, a protective sheet layer 213 for protecting static electricity and protecting circuit protection elements and peripheral circuits from overvoltage is disposed.

The protection sheet layer 213 is provided with at least one air gap forming member 215 formed between the pair of internal electrodes 211a and 212a. For this purpose, the protection sheet layer 213 may be formed with a through hole at a position where the air gap forming member 215 is provided.

Specifically, the second elementary body may include a first sheet layer 211 having a first internal electrode 211a on its top surface and a second sheet layer 211 having a second internal electrode 212a on the bottom surface thereof. 212 are stacked on each other, and a protective sheet layer 213 is disposed between the first sheet layer 211 and the second sheet layer 212.

That is, the first sheet layer 211, the protective sheet layer 213, and the second sheet layer 212 are sequentially stacked so that the first internal electrode 211a and the second internal electrode 212a can face each other do.

Accordingly, the first internal electrode 211a and the second internal electrode 212a are disposed to face each other and are spaced apart from each other by the protective sheet layer 213, and the first internal electrode 211a, And the second internal electrode 212a are disposed so that one side thereof is in contact with the gap forming member 215, respectively.

The protective sheet layer 213 disposed between the first sheet layer 211 and the second sheet layer 212 may include at least one through hole.

Here, the through-holes are formed in a region where the first internal electrode 211a and the second internal electrode 212a, which are respectively disposed on the upper and lower sides of the protective sheet layer 213, are overlapped with each other.

At this time, an air gap forming member 215 may be provided in the through hole. The gap forming member 215 may be disposed between the internal electrodes 211a and 212a and may include a layer of the discharge material 125a, 125b, and 125c applied to the inner wall at a predetermined thickness along the height direction.

Alternatively, if the void forming member 215 is not provided separately, a layer of the discharge material may be applied to the inner wall of the through hole with a predetermined thickness along the height direction.

Here, the gap forming member 215 or the discharge material layer applied thereto is provided such that its upper end is in contact with the second inner electrode 212a and its lower end is in contact with the first inner electrode 211a.

The gap 216 may be formed between the pair of internal electrodes 211a and 212a by the gap forming member 215. [ The static electricity introduced from the outside by the gap 216 can be discharged between the internal electrodes 211a and 212a. At this time, the electrical resistance between the internal electrodes 211a and 212a is lowered, and the voltage difference between both ends of the electric shock protection device 200 can be reduced to a certain value or less. Therefore, the electric shock protection unit 220 can pass the static electricity without being broken.

Here, the discharge material constituting the discharge material layers 225a, 225b and 225c has a low dielectric constant, no conductivity, and no short circuit when an overvoltage is applied.

To this end, the discharge material may be made of a nonconductive material including at least one kind of metal particles, and may be made of a semiconductor material containing SiC or a silicon-based component. In addition, the discharge material may be formed by mixing at least one material selected from SiC, carbon, graphite, and ZnO and at least one material selected from Ag, Pd, Pt, Au, Cu, Ni, It is possible.

For example, when the first internal electrode 211a and the second internal electrode 212a include an Ag component, the discharge material may include a SiC-ZnO-based component. The SiC (Silicon Carbide) component has excellent thermal stability, excellent stability in an oxidizing atmosphere, constant conductivity and heat conductivity, and low dielectric constant.

The ZnO component has excellent nonlinear resistance characteristics and discharge characteristics.

Both SiC and ZnO have conductivity when used separately, but when they are sintered after mixing, ZnO is bonded to the surface of SiC particles to form an insulating layer.

In such an insulating layer, SiC completely reacts to form a SiC-ZnO reaction layer on the surface of the SiC particles. Accordingly, the insulation layer blocks the Ag path to provide a further higher insulation property to the discharge material and improves resistance to static electricity, thereby solving the DC short phenomenon when the supporter 120 is mounted on the electronic part.

Here, the discharge material includes SiC-ZnO-based materials as an example of the discharge material. However, the present invention is not limited thereto, and the discharge material may include a component constituting the first internal electrode 211a and the second internal electrode 212a A non-conductive material including a semiconductor material or metal particles may be used

At this time, the discharge material layers 215a, 215b and 215c applied to the inner wall of the gap forming member 215 have a first portion 215a coated along the height direction of the inner wall of the gap forming member 215, A second portion 215b extending from the upper end of the first portion 215a in contact with the first inner electrode 211a in contact with the upper surface of the protective sheet layer 213 and a lower portion And a third portion 215c extending in contact with and facing the second internal electrode 212a along the lower surface of the protective sheet layer 213. [

Accordingly, the discharge material layers 215a, 215b and 215c are formed not only on the inner wall of the gap forming member 215 but also on the upper and lower ends of the gap forming member 215, The first internal electrode 211a and the second internal electrode 212a are extended to extend the contact area with the first internal electrode 211a and the second internal electrode 212a.

With this configuration, even if part of the discharge material layers 215a, 215b and 215c are damaged as a part of the components constituting the discharge material layers 215a, 215b and 215c is vaporized by the electrostatic spark, 215a, 215b, and 215c can perform their functions, the resistance to static electricity can be improved.

The protective sheet layer 213 may include a plurality of void forming members 215. As described above, when the number of the gap forming members 215 is increased, the discharge path of the static electricity is increased, so that resistance to static electricity can be increased.

The protective sheet layer 213 disposed between the first sheet layer 211 and the second sheet layer 212 is formed to have the same area as the first sheet layer 211 and the second sheet layer 212 The first internal electrode 211a and the second internal electrode 212a may have a smaller area than the first and second sheet layers 211 and 212, .

Meanwhile, the electric shock protection unit 210 and the capacitor units 220a and 220b may be electrically connected to each other in parallel so that the second body is disposed on one side of the first body, thereby realizing an electric shock protection device. The second prism body may be disposed between the first prism of the first capacitor unit 220a and the second prism of the second capacitor unit 220b as shown in FIGS. 5A through 5C, 222a, 223a, 224a, 225a, 226a, 227a, and 228a of the capacitor units 220a and 220b and the internal electrodes 211a and 212a of the first and second main bodies 210 and 210, The external electrodes 231 and 232 may be electrically connected to the external electrodes 231 and 232, respectively. In addition, the external electrodes 231 and 232 are electrically connected to the human body-accessible conductor of the electronic device, respectively, so that the electric shock protection unit and the capacitor unit can be electrically connected in parallel.

Meanwhile, the electrodes included in the electric shock protection unit 210 and the capacitor units 220a and 220b may have different electrode pitches, electrode lengths, and / or electrode widths.

That is, the interval between the pair of the internal electrodes 211a and 212a disposed opposite to each other may be equal to the interval between the capacitor electrodes 221a, 222a, 223a, 224a, 225a, 226a, 227a, and 228a.

At this time, the interval between the electric shock protection unit 210 and the capacitor units 220a and 220b may be larger than the interval between the pair of internal electrodes 211a and 212a.

That is, it is preferable to ensure a sufficient distance from the internal electrodes 211a and 212a so that static electricity or leakage current flowing along the pair of internal electrodes 211a and 212a does not leak to the adjacent capacitor electrodes. At this time, the distance between the capacitor portions 220a and 220b and the electric shock protection portion 210 may be 15 to 100 mu m and preferably 2 times or more the interval between the pair of internal electrodes 211a and 212a Do. For example, when the interval between the pair of internal electrodes 211a and 212a is 10 占 퐉, the distance between the capacitor units 220a and 220b and the electric shock protection unit 210 may be 20 占 퐉 or more. Referring to FIG. 5C, the distance between the capacitor unit and the electric shock protection unit refers to a distance between the capacitor electrode 220a and the capacitor electrode 220, which is located closest to the electric shock protection unit 210 among the plurality of capacitor electrode units included in the capacitor unit 220a The distance between the inner electrode 212a and the inner electrode 212a closest to the inner electrode included in the shield 230a.

As described above, the electric shock protection device 100 is provided with the capacitor portions 220a and 220b so as to pass the static electricity and to block the leakage current of the external power source, and to have a capacitance suitable for the communication band It can be easily provided. Unlike the prior art in which a separate component for increasing the RF reception sensitivity is used together with a suppressor, a varistor or a Zener diode for protecting the internal circuit against static electricity by the capacitor units 115a and 115b, There is an advantage that the RF reception sensitivity can be increased as well as the protection against static electricity through one electric shock protection element 100.

In another embodiment, as shown in FIG. 6, the electric shock protection device 300 may include a pair of internal electrodes 314a and 314b horizontally spaced apart from each other by a predetermined distance. That is, the internal electrodes 314a and 314b are disposed apart from each other so as to form a gap in at least a pair of the sheet layers 311 and 312. Preferably, the pair of inner electrodes 314a and 314b are arranged at regular intervals in a parallel direction on the same plane.

Here, a gap 320 may be formed between the pair of inner electrodes 314a and 314b. Here, the cavity 320 may be formed to have a height greater than the height of the pair of inner electrodes 314a and 314b, and may be formed to have a width larger than that of the pair of inner electrodes 314a and 314b. When the volume of the void 320 is expanded, even if fine particles are generated from the internal electrodes 314a and 314b during the discharge by the static electricity, since the space between the internal electrodes 314a and 314b is wide, The incidence of defects can be reduced. At this time, it is preferable that the gap is a space in which discharge is started by the pair of internal electrodes 314a and 314b when static electricity flows, and the volume of the gap is set so as to satisfy the immunity against static electricity. For example, the volume of the gap may be 1-15% of the total volume of the electric shock protection device 300.

Specifically, the pair of inner electrodes 314a and 314b are spaced apart from each other to form a gap on the upper surface of the first sheet layer 311. [ Here, the gap between the pair of inner electrodes 314a and 314b may be 10 to 100 占 퐉. The pair of inner electrodes 314a and 314b are pattern-printed on the upper surface of the first sheet layer 311.

Between the pair of inner electrodes 314a and 314b corresponding to each other, an air gap 320 is provided for protecting the static electricity, protecting the circuit protection element and the peripheral circuits from the overvoltage, and cutting off the leakage current.

These voids 320 are disposed between the pair of inner electrodes 314a and 314b arranged in parallel to each other on the same plane and are provided in a hollow form so that air can be filled, The second sheet layer 312 is laminated.

A plurality of such voids 320 may be provided and spaced along the width direction of the internal electrodes 314a and 314b. As described above, when the number of the voids 320 is increased, the discharge path of the static electricity is increased, so that resistance to static electricity can be improved.

At this time, the gap 320 is formed to have a height exceeding the height from the upper surface of the first sheet layer 311 to the upper end of the internal electrodes 314a and 314b. That is, the cavity 320 according to an exemplary embodiment of the present invention is provided to have a height exceeding the total height of the internal electrodes 314a and 314b, thereby enlarging the volume of the cavity 320 as a whole.

Accordingly, even when fine particles are generated from the internal electrodes 314a and 314b during the discharge of static electricity, it is possible to reduce the incidence of defects that can be caused by the particles through the void 320 having a large space.

At this time, the gap 320 may be formed to extend on the upper surface or the lower surface of the pair of inner electrodes 314a and 314b spaced apart from each other.

The gap 320 may be formed to have a width equal to the width of the pair of inner electrodes 314a and 314b and the gap 320 may have a width greater than the thickness of the pair of inner electrodes 314a and 314b Can be largely provided.

The voids 320 are formed by patterning the voids between the pair of inner electrodes 314a and 314b and then removing the voids by heat applied during the sintering process. In order to prevent the air gap 320 from being deformed or damaged by pressure in the process of pressing the air gap material to form a body after stacking the first sheet layer 311 and the second sheet layer 312, Is used.

To this end, the void material is made of a material which is decomposed by heat at a high temperature, so that a plurality of sheet layers can be removed in the course of laminating and sintering. For example, the void material may be formed of a material that is decomposed at a temperature range of 200 to 2000 ° C.

The pair of inner electrodes 314a and 314b may be polygonal, circular, elliptical, spiral, or a combination of various shapes and patterns. The internal electrodes facing each other may be provided in the same pattern and shape, or may have different patterns and shapes.

Meanwhile, a gap is formed between the pair of inner electrodes 314a and 314b facing each other at a predetermined interval, and the gap 320 is provided in the vicinity of the center of the gap. At this time, a discharge material layer coated on the inner wall of the gap 320 at a predetermined thickness along the height direction of the internal electrodes 314a and 314b is provided. At this time, it is noted that the discharge material layer may be provided only on the inner wall of the gap 320, but may be applied to cover the open top of the gap 320. That is, the discharge material layer may extend not only the inner wall of the gap 320 but also the open upper end of the gap 320.

The first sheet layer 311 and the second sheet layer 312 constituting the second element body may be directly stacked on the upper portion of the first sheet layer 311, A pair of internal electrodes 314a and 314b formed on the upper surface of the first sheet layer 311 and a separate buffer layer corresponding to the height of the void 320 may be stacked. The buffer layer serves to eliminate the height deviation corresponding to the height of the internal electrodes 314a and 314b and the height of the void 320. [

In the case where the body included in each of the electric shock protection parts 210 and 310 and the capacitor parts 220 and 340 is formed by sintering after a single sheet layer is laminated, a plurality of sheet layers A plurality of sheet layers for forming a second sintered body are stacked, and a plurality of sheet layers for forming a first sintered body on the upper portion of the second sintered body are stacked to form a first sintered body and a second sintered body It is possible to realize an electric shock protection device in which a body is integrated. Or the first and second main bodies each formed by sintering may be laminated in a desired arrangement to form an electric shock protection element. The method of forming the electric shock protection element is not particularly limited.

Meanwhile, the electric shock protection device 400 may be an electric shock protection device 400 as shown in FIGS. 7A to 7C. The electric shock protection device 400 may include a varistor type electric shock protection unit 410 and one or more capacitor units 420a and 420b.

The electric shock protection unit 410 includes a plurality of first internal electrodes arranged in a line in the second main body and the second main body and a second internal electrode spaced apart from the other first internal electrodes can do.

The body may be formed through a known varistor composition. For example, a plurality of sheet layers 410 and 420 formed through a varistor composition may be laminated and then sintered.

The plurality of sheet layers may be formed of the same varistor composition, or may be formed of at least two varistor compositions, respectively. The sheet layers may be alternately stacked, .

The varistor composition may include a varistor forming component, and may further include a binder, a curing agent, a solvent, and the like. The varistor forming component may include at least one of a semiconductive material, a Pr-based material, and a Bi-based material including at least one of ZnO, SrTiO ₃ , BaTiO ₃ , and SiC. The average particle diameter of the varistor forming component powder may be 0.1 to 5 占 퐉, for example, 0.1 to 1 占 퐉. If the average particle diameter of the powder is less than 0.1 占 퐉, there may be a problem of greatly increasing the manufacturing cost. If the average particle diameter exceeds 1 占 퐉, when two or more kinds of varistor forming components are mixed for controlling the sintering temperature, It may not be uniformly mixed and there may be a problem that the sintered body does not have a proper volume shrinkage ratio after sintering.

 Accordingly, the varistor forming component may be pulverized through mechanical milling or the like so as to have an aimed average particle size before mixing with the binder, and then dried. The drying process may be performed at a temperature of 50 to 200 ° C for 30 minutes to 10 hours, but is not limited thereto. After the drying process, the final dielectric powder can be prepared by further pulverizing to have the desired average particle size.

The binder can be used without limitation in the case of a binder used for producing a known green sheet, and as a non-limiting example thereof, a polyvinyl butyral resin, a polyvinylacetate resin, and a polyacrylic resin And the like. The binder may be mixed in an amount of 1 to 30 parts by weight based on the total weight of the varistor forming component and the binder. If the binder is contained in an amount of less than 1 part by weight, the binder strength of the varistor-forming component is lowered, and the mechanical strength of the body may be considerably lowered even after sintering. In addition, if the binder is contained in an amount exceeding 30 parts by weight, the air permeability of the sheet itself after being manufactured into a sheet form is not good, and an internal air trap may occur when a thick film staking method is applied. And the adhesion may be increased even with a small amount of moisture, and workability may be deteriorated, and volume shrinkage during drying of the sheet is remarkable, and there is a possibility that the sheet bends or the quality of the surface is deteriorated.

Further, the solvent may be water, a known organic solvent, and may vary depending on the specific kind of the binder selected, so that the present invention is not particularly limited thereto.

The method for producing a single sheet layer through the varistor composition described above will be briefly described. The varistor composition can be formed into a sheet shape through press molding. The press molding may be carried out using a general press molding method used in the art. For example, the granules are put into a molding mold having a diameter of 7.0 to 10.0 mm, and a pressure of 800 to 1,200 kg / cm < 3 & A press molded product to be manufactured can be produced.

The first inner electrodes 416 and 416 'and the second inner electrodes 418 may be formed on the first varistor sheet layer 412 and the second varistor sheet layer 414, respectively, However, the method of forming the internal electrodes 416 and 416 'and the capacitor portion may be a well-known method, and the present invention is not limited thereto. For example, a method of applying, depositing or printing the internal electrode forming material As shown in FIG.

The prepared first varistor sheet layer 412 and the second varistor sheet layer 414 may be laminated so as to have a desired electrode arrangement, then may be formed into a sintered body through a sintering process, and may be further subjected to a pressing process before the sintering process . The sintering process may be performed through electric sintering using silver (Ag) electrodes, and the sintering process may be performed at 850 to 950 ° C, preferably 880 to 940 ° C. If the temperature is lower than 850, sintering may not occur smoothly. If the temperature is higher than 950, the internal electrode material of the sintering unit may be changed to a silver-palladium (Ag-Pd) alloy electrode at the silver (Ag) The sintering process may be performed at the above temperature. However, the present invention is not limited thereto, and can be modified depending on the kind of the varistor forming component included in the varistor material layer, the type of the binder, and the material of the internal electrode.

It is possible to implement an electric shock protection unit in which the second body is integrally formed through the above-described method. At this time, it is preferable to set the particle diameter of the sintered particles contained in the varistor sheet layer after sintering so as to satisfy the breakdown voltage (Vbr).

The internal electrodes 416 and 416 'and the capacitor portion are formed of a plurality of first internal electrodes 412 and 416' separated in a line on the first varistor sheet layer 412 and a second internal electrode 412 and 416 'formed on the second varistor sheet layer 414, Electrode 418 may be included. Here, a plurality of the second internal electrodes may be provided, and a plurality of second internal electrodes may be arranged in a line on the second varistor sheet layer.

The breakdown voltage Vbr of the electric shock protection device 400 may be the sum of the unit breakdown voltages respectively formed between the first internal electrodes 416 and 416 'and the second internal electrodes 418. That is, the breakdown voltage Vbr of the electric shock protection device 400 is set to be higher than the unit breakdown voltage formed between the first internal electrodes 416 and 416 'and the second internal electrode 418, (416, 416 ') and the second internal electrode (418).

Each of the first internal electrodes 416 and 416 'and the second internal electrode 418 may be disposed so that at least a part thereof is not overlapped. That is, each of the first internal electrodes 412 and 416 'and the second internal electrodes 418 may be disposed so as to be at least partially overlapped with each other, or alternately disposed between the first and second internal electrodes 412 and 416 so as not to overlap with each other.

At this time, the first internal electrode or the second internal electrode does not leak static electricity or leakage current to the adjacent external electrodes (not shown) of the internal electrodes 416, 416 ', 418, It is preferable that the interval is set so as to proceed normally.

For example, the distance L between any two first internal electrodes 416 and 416 'disposed adjacent to and closest to the second internal electrode 418 of the plurality of first internal electrodes 416 and 416' (D1, d2) between the two first internal electrodes 416, 416 'and the second internal electrode 418, respectively.

In addition, it is preferable that the distance between the second internal electrode 418 and the adjacent external electrode (not shown) is larger than the distance between the first internal electrodes 412 and 418.

Specifically, the first varistor sheet layer 412 may include two first internal electrodes 416 and 416 ', and the two first internal electrodes 416 and 416' may be spaced apart on the same plane .

The second varistor sheet layer 414 may include at least one second internal electrode 418 on one side thereof.

At this time, the first varistor sheet layer 412 and the second varistor sheet layer 414 are formed in the vertical direction so that the second inner electrode 418 forms a different row from the two first inner electrodes 416 and 416 ' The first varistor sheet layer 412 and the second varistor sheet layer 414 can be stacked in the upward and downward directions.

In addition, the second internal electrode 418 may be disposed so that both end portions thereof overlap with one end side of the first internal electrodes 416 and 416 '. For this, the center of the second internal electrode 418 may be located at the center of the gap L1 formed between the two first internal electrodes 416 and 416 '.

Here, the first varistor sheet layer 412 in which the two first internal electrodes 416 and 416 'are formed may include a second varistor sheet layer 418 in which one second internal electrode 418 is formed, as shown in FIG. 414 and may optionally be stacked on the bottom of the second varistor sheet layer 414. [

As shown in FIG. 8B, the plurality of unit elements formed by the first inner electrodes 416 and 416 'and the second inner electrodes 418 may be provided in parallel in the electric shock protection unit 410. That is, the electric shock protection unit 410 includes a first varistor sheet layer 412 having two first internal electrodes 416 and 416 'formed thereon, and one second varistor sheet layer 411 having one second internal electrode 418 formed thereon, (414) are stacked alternately.

At this time, the two first varistor sheet layers 412 may be stacked on top and bottom of the second varistor sheet layer 414, respectively. The second inner electrode 418 formed on the second varistor sheet layer 414 has first and second inner electrodes 416 and 416 'disposed on both ends thereof and a second inner electrode 418 disposed on the lower portion thereof. And are arranged so as to overlap with each other at a certain region.

The first inner electrodes 416 and 416 'disposed on the upper portion of the second varistor sheet layer 414 and the first inner electrodes 416 and 416' disposed on the lower portions of the second varistor sheet layer 414 are formed of And the second internal electrode 418 may be disposed between the first internal electrodes 416 and 416 'spaced apart in the vertical direction.

At this time, the central portion of the second inner electrode 418 may be disposed at the center of the gap L formed between the two first inner electrodes 416 and 416 'disposed on the same plane.

The first varistor sheet layer 412 and the second varistor sheet layer 414 may be formed by the spacing d1 and d2 between the first internal electrodes 416 and 416 'and the second internal electrodes 418, Can be arranged in various stacking orders while satisfying the spacing L of the protrusions.

For example, the two second varistor sheet layers 414 may be stacked on top and bottom of the first varistor sheet layer 412, respectively.

Here, the second internal electrode 418 formed on the second varistor sheet layer 414 has a pair of first internal electrodes 416 and 416 ', both ends of which are spaced apart from each other, .

At this time, it is preferable that the interval of the second internal electrode 418 is set so that the static electricity or the leakage current does not leak to the external electrode (not shown) but can proceed normally to the first internal electrode 416 '. For example, it is preferable that the distance between the second internal electrode 418 and adjacent external electrodes (not shown) is larger than the distances d1 and d2 between the first internal electrodes 416 and 416 '.

As described above, by laminating a plurality of the first varistor sheet layer 412 and the second varistor sheet layer 414, the discharge path for static electricity is increased, and resistance to static electricity can be improved.

The number of the first internal electrodes 416 and 416 'and the second internal electrode 418 may be determined to satisfy the breakdown voltage Vbr of the electric shock protection device 400 according to the unit breakdown voltage formed therebetween . That is, the unit elements formed by the first internal electrodes 416 and 416 'and the second internal electrodes 418 are formed by stacking two layers. However, the present invention is not limited to this, Device. As described above, by laminating a plurality of the first varistor sheet layer 412 and the second varistor sheet layer 414, the discharge path for static electricity is increased, and resistance to static electricity can be improved. Further, in order to provide a further increased unit breakdown voltage, a plurality of varistor sheet layers provided on the second elementary body are arranged in a line on a first varistor sheet layer (not shown), for example, (Not shown), and may include a plurality of, e.g., two, second internal electrodes (not shown) spaced in a line on a second varistor sheet layer (not shown). At this time, the sheet layers may be laminated such that the second internal electrodes do not overlap and / or overlap with the first internal electrodes between the two first internal electrodes.

Since the first internal electrodes 416 and 416 'and the second internal electrodes 418 are provided in the varistor sheet layer in the electric shock protection devices 400 and 400', when the static electricity is applied, due to the nonlinear voltage characteristics of the varistor material, The electrical resistance between the electrodes 416 and 416 'and the second internal electrode 418 is lowered to allow static electricity to pass therethrough. Therefore, the varistor material can pass the static electricity without being destroyed by the insulation even momentarily by the high static electricity.

The capacitor units 420a and 420b are for passing a communication signal input from the conductor 12, such as an antenna, without attenuation. The capacitor units 420a and 420b may be electrically connected in parallel with the varactor-type protection unit 410. For example, the capacitor portions 420a and 420b may be disposed on at least one of the upper portion and the lower portion or both the upper portion and the lower portion of the electric shock protection portion 410. At this time, the first body included in the capacitors 420a and 420b may be formed of the same dielectric material as the second body of the electric shock protection unit 410, for example, a varistor composition or a different dielectric material. The description of the capacitor portions 420a and 420b is the same as that of the capacitor sheets 220 and 340 described above and will not be described below.

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.

10: portable electronic device 12a, 12b, 12c, 12d: conductor
14: circuit part 100, 200, 300, 400:
210, 310, 410: electric shock protection unit 220, 340, 420:
211, 212, 311, 312, 412, 414:
211a, 212b, 314a, 314b, 416 ', 418:
125a, 125b, 125c, 324: a discharge material layer 215:
216,320: Pore
221, 222, 223, 224, 225, 226, 227, 228, 341, 342, 343, 344, 345, 346:
221a, 222a, 223a, 224a, 225a, 226a, 227a, 228a:
231, 232, 331, 332:

Claims (30)

An electric shock protection element disposed between a human contactable conductor of an electronic device and an internal circuit portion,
An electric shock protection part; And
And a capacitor portion including a first element body having a dielectric constant of 20 F / m or more to pass a communication signal flowing from the conductor and prevent attenuation of a communication signal passing through the first element body,
An electric shock protection element satisfying the following expression: < EMI ID = 1.0 > wherein: the electric current is passed through the conductor without passing through the dielectric breakdown, and the leakage current of the external power source,
Vbr> Vin
Here, Vbr is the breakdown voltage of the electric shock protection element, and Vin is the rated voltage of the external power supply of the electronic device. The method according to claim 1,
Wherein the rated voltage is a national standard rated voltage. The method according to claim 1,
Vcp > Vbr, wherein Vcp is an insulation breakdown voltage of the capacitor section. The method according to claim 1,
Wherein the communication signal has a wireless communication frequency band. The apparatus of claim 1, wherein the electric shock protection unit
The second body and /
At least one pair of inner electrodes disposed at a predetermined interval in the second elementary body and a gap formed between the pair of inner electrodes,
And the second elementary body is disposed on one side of the first elementary body so that the electric shock protection portion is electrically connected in parallel with the capacitor portion. 6. The method of claim 5,
Wherein the pair of inner electrodes are disposed on the same plane. 6. The method of claim 5,
Wherein the gap comprises a layer of a discharge material applied to the inner wall at a predetermined thickness along the height direction. 8. The method of claim 7,
Wherein the plurality of air gaps are provided between the pair of inner electrodes. 8. The method of claim 7,
Wherein the discharge material layer comprises a nonconductive material or a semiconductor material including metal particles. 8. The method of claim 7,
Wherein the discharge material layer has a first portion that is applied along the height direction of the inner wall of the gap, a second portion that extends outward from the top of the first portion, and a third portion that extends outward from the bottom of the first portion Including,
Wherein the second portion is in contact with one of the pair of inner electrodes, and the third portion is in contact with the other of the pair of inner electrodes. 6. The method of claim 5,
Wherein the first and second main bodies include a dielectric. 6. The method of claim 5,
Wherein the internal electrode comprises at least one of Ag, Au, Pt, Pd, Ni and Cu. 6. The method of claim 5,
Wherein an interval between the capacitor portion and the electric shock protection portion is larger than an interval between the pair of internal electrodes of the electric shock protection portion. The apparatus of claim 1, wherein the electric shock protection unit
The second body and /
A plurality of first internal electrodes arranged in a line in the second main body and a second internal electrode spaced apart from the first internal electrodes by a distance different from the first internal electrodes,
And the second elementary body is disposed on one side of the first elementary body so that the electric shock protection portion is electrically connected in parallel with the capacitor portion. 15. The method of claim 14,
Wherein the breakdown voltage (Vbr) of the electric shock protection element is a sum of unit breakdown voltages respectively formed between the first adjacent first internal electrode and the second internal electrode. 15. The method of claim 14,
Wherein the second internal electrode has a plurality of electrodes spaced apart in a line. 17. The method of claim 16,
Wherein each of the second internal electrodes is disposed to overlap at least a part of the first internal electrode. 17. The method of claim 16,
And each of the second internal electrodes is disposed so as not to overlap with the first internal electrode. 15. The method of claim 14,
A distance L between any two first inner electrodes disposed adjacent to and closest to the second inner electrode among the plurality of first inner electrodes is a distance between the two first inner electrodes and the second inner electrode, (d1, d2). 15. The method of claim 14,
Wherein the second element body comprises at least one of a semiconductive material, a Pr-based material and a Bi-based material including at least one of ZnO, SrTiO ₃ , BaTiO ₃ and SiC. 15. The method of claim 14,
The distance between the capacitor portion and the electric shock protection portion may be a distance between the first inner electrode and the second inner electrode disposed nearest to the second inner electrode of the plurality of first inner electrodes, d2) greater than the sum. 15. The method of claim 14,
Wherein the first elementary body comprises a dielectric. Human contactable conductors;
Circuitry; And
And an electric shock protection element disposed between the conductor and the circuit portion,
Wherein the electric shock protection housing includes a capacitor portion including an electric shock protection portion and a first body having a dielectric constant of 20 F / m or more to pass a communication signal flowing from the electric conductor without attenuation,
The electric shock protection device is configured to pass the static electricity without being insulated and broken when the static electricity flows from the electric conductor, to block the leakage current of the external electric power supplied from the ground of the circuit part, and to pass the communication signal flowing from the electric conductor The portable electronic device having an electric shock protection function satisfying:
Vbr> Vin, Vcp> Vbr
Here, Vbr is a breakdown voltage of the electric shock protection element,
Vin is the rated voltage of the external power supply of the electronic device
Vcp is the breakdown voltage of the capacitor portion. 24. The method of claim 23,
Wherein the conductor has at least one of an antenna, a metal case, and a conductive ornamental for communication between the electronic device and an external device. 25. The method of claim 24,
Wherein the metal case has an electric shock protection function that partially surrounds or entirely surrounds the side of the housing of the electronic device. 25. The method of claim 24,
Wherein the metal case is provided so as to surround a camera provided to be exposed to the outside on a front surface or a rear surface of the housing of the electronic device. An element disposed between a human body contactable conductor of an electronic device and an internal circuit portion,
An electric shock protection unit for passing static electricity without insulation breakdown during the introduction of static electricity from the electric conductor and for interrupting a leakage current of external electric power supplied from the ground of the circuit unit; And
And a capacitor portion including a first element body having a dielectric constant of 20 F / m or more to allow a communication signal flowing from the conductor to pass without attenuation, wherein an electric shock protection element satisfying the following formula:
Vbr> Vin, Vcp> Vbr
Here, Vbr is a breakdown voltage of the electric shock protection element,
Vin is the rated voltage of the external power supply of the electronic device,
Vcp is an insulation breakdown voltage of the capacitor portion. 28. The apparatus of claim 27, wherein the shock protection portion
Second body
At least a pair of internal electrodes disposed at predetermined intervals in the inside of the second elementary body; And
And a gap formed between the pair of inner electrodes,
And the second elementary body is disposed on one side of the first elementary body so that the electric shock protection portion is electrically connected in parallel with the capacitor portion. 28. The apparatus of claim 27, wherein the shock protection portion
A second body;
A plurality of first internal electrodes arranged in a line in the second main body; And
And a second internal electrode spaced apart from the plurality of first internal electrodes by another column,
And the second elementary body is disposed on one side of the first elementary body so that the electric shock protection portion is electrically connected in parallel with the capacitor portion. 28. The method of claim 27,
Wherein the capacitor portion is provided on at least one of the upper and lower portions of the electric shock protection portion or at least one of both the upper and lower portions of the electric shock protection portion at regular intervals.

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