KR20170046488A - Circuit protection device and mobile electronic device with the same - Google Patents
Circuit protection device and mobile electronic device with the same Download PDFInfo
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- KR20170046488A KR20170046488A KR1020150146890A KR20150146890A KR20170046488A KR 20170046488 A KR20170046488 A KR 20170046488A KR 1020150146890 A KR1020150146890 A KR 1020150146890A KR 20150146890 A KR20150146890 A KR 20150146890A KR 20170046488 A KR20170046488 A KR 20170046488A
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- electric shock
- shock protection
- capacitor
- pair
- electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0009—Casings with provisions to reduce EMI leakage through the joining parts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0067—Devices for protecting against damage from electrostatic discharge
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 a built-in circuit portion. The electric shock protection device passes a communication signal coming from the conductor and prevents attenuation At least one capacitor portion including a first body having a dielectric constant of 20 F / m or more; And an electric shock protection unit including a second elementary body disposed on one side of the first elementary body, and an air gap formed between the pair of internal electrodes and at least one pair of the internal electrodes disposed at a predetermined distance in the second elementary body; Vb > Vin so as to prevent static electricity from passing through the conductor and to prevent leakage current of the external power source flowing from the ground of the circuit part. 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
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 source. Can propagate along the ground of the circuit.
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.
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-described problems, there is provided an electric shock protection element disposed between a human contactable conductor of an electronic device and an internal circuit portion,
At least one capacitor portion including a first body having a dielectric constant of 20 F / m or more so as to pass communication signals incoming from the conductor and prevent attenuation of a communication signal passing therethrough; And an electric shock protection unit including a second elementary body disposed on one side of the first elementary body, and an air gap formed between the pair of internal electrodes and at least one pair of the internal electrodes disposed at a predetermined distance in the second elementary body; Wherein the static electricity is not passed through the conductor while the static electricity flows into the electric conductor, 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.
Also, the capacitor unit may be electrically connected in parallel with the electric shock protection unit.
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 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 gap may be arranged in a vertical or horizontal direction about the internal electrode. Also, the gap may be provided between the pair of inner electrodes. The gap may be equal to or greater than the gap between the pair of inner electrodes, and the height may be equal to or greater than the thickness 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 interval between the internal electrodes may be 10 to 100 mu m, and the thickness may be 2 to 10 mu m.
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. At this time, the gap between the capacitor unit and the electric shock protection unit may be 15 to 100 mu m.
Also, the capacitor unit may include a capacitor electrode in the first prism, and the thickness of the capacitor electrode may be 2 to 10 mu m. In addition, the interval between the capacitor electrodes may be 15 to 100 mu m.
In addition, the volume of the gap may be 1 to 15% of the total volume of the electric shock protection device.
In addition, the discharge start voltage due to the static electricity of the internal electrode may be 1 to 15 kV.
On the other hand, human contactable conductors; Circuitry; And at least one capacitor portion including a first body having a dielectric constant of 20 F / m or more so as to prevent attenuation of a communication signal passing therethrough; and an electric shock protection element disposed between the conductor and the circuit portion; And an electric shock protection unit including a second elementary body disposed on one side of the first elementary body, and an air gap formed between the pair of internal electrodes and at least one pair of the internal electrodes disposed at a predetermined distance in the second elementary body; Wherein the electric shock protection device allows the static electricity to pass without being destroyed by insulation when the static electricity flows from the electric conductor, interrupts the leakage current of the external electric power supplied from the ground of the circuit part, A portable electronic device having an electric shock protection function satisfying the following expression is provided.
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.
On the other hand, the present invention relates to an element disposed between a body-contactable conductor of an electronic device and a built-in circuit, wherein at least one of the elements includes a first body having a dielectric constant of 20 F / A capacitor portion; And a second elementary body disposed on one side of the first elementary body and at least a pair of internal electrodes disposed at a predetermined distance in the second elementary body and a gap formed between the pair of internal electrodes, And an electric shock protection unit for passing static electricity without being broken down in insulation upon entry and for interrupting a leakage current of an external electric power source flowing from the ground of the circuit unit, wherein the electric shock protection unit satisfies the following formula.
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.
Also, the capacitor unit may be electrically connected in parallel with the electric shock protection 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 an overall perspective view of an electric shock protection device according to an embodiment of the present invention;
Fig. 2 is an exploded perspective view showing the lamination relationship of the plurality of sheet layers shown in Fig. 1,
Fig. 3 is a longitudinal sectional view of Fig. 1,
4A to 4E are conceptual diagrams showing an application example of an electric shock protection device according to an embodiment of the present invention,
5A to 5C are schematic equivalent circuit diagrams for explaining operation of (a) leakage current, (b) static electricity (ESD), and (c) communication signal of the electric shock protection device according to the embodiment of the present invention,
6A and 6B show simulation results of the pass frequency band according to the capacitance,
7A to 7E are views showing various forms of internal electrodes in an electric shock protection device according to an embodiment of the present invention,
8A to 8D are longitudinal sectional views showing various arrangement relationships of the electric shock protection unit and the capacitor unit in the electric shock protection device according to the embodiment of the present invention,
9A to 9G are longitudinal sectional views showing various arrangement relationships of the first ceramic material and the second ceramic material in the electric shock protection device according to the embodiment of the present invention,
10 is a longitudinal sectional view showing another example of the electric shock protection unit in the electric shock protection device according to the embodiment of the present invention,
FIGS. 11A to 11D are longitudinal sectional views showing various shapes of voids in an electric shock protection device according to an embodiment of the present invention,
12A to 12E are views showing various arrangement relationships of the electric shock protection unit and the capacitor unit in another example of the electric shock protection device according to the embodiment of the present invention,
13A to 13D are views showing various forms of internal electrodes in another example of an electric shock protection device according to an embodiment of the present invention,
FIG. 14 is a longitudinal sectional view showing still another example of the electric shock protection device according to the embodiment of the present invention, and FIG.
15A to 15C are vertical cross-sectional views illustrating various forms of voids in another example of an electric shock protection device according to an 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 electric
The electric
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.
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 means a breakdown voltage (or trigger voltage) of the electric shock protection unit. The breakdown voltage Vbr is the breakdown voltage of the electric shock protection unit (or trigger voltage) , And a layer of a discharge material.
As shown in FIGS. 1 to 3, the electric
The
A plurality of sheet layers 121, 122, 123, 124, 125, 126, 127, 128 having
The first
The
A plurality of
If the distance between the capacitor electrodes is less than 15 mu m, it is difficult to ensure a sufficient capacitance for passing the communication signal of the wireless communication band without attenuation. If the distance exceeds 100 mu m, the distance between the capacitor electrodes is limited, Since the number of stacked sheet layers including the electrode is limited, it is difficult to realize a high capacity capacitor.
At this time, the thickness of each of the capacitor electrodes constituting the
For example, when the interval between the pair of capacitor electrodes facing each other is 20 μm, the thickness of the capacitor electrode may be set to be in the range of 2 to 10 μm. Here, if the thickness of the capacitor electrode is 2 mu m or less, it can not serve as an electrode. If the thickness is more than 10 mu m, the thickness of the capacitor electrode becomes thick and the distance between the capacitor electrodes for forming the capacitor portion is limited Since the number of stacked sheet layers including the capacitor electrode is limited, it is difficult to realize a capacitor of a high capacity.
The shortest distance d2 between the free ends of the capacitor electrodes that are not connected to the external electrodes and the
2, one
As described above, the electric
The electric
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
The first
At this time, the intervals between the
Here, if the interval between the first
At this time, the thicknesses of the first
With this configuration, the discharge start voltage (operation voltage) due to the static electricity of the
On the other hand, between the pair of
The
Specifically, the second elementary body may include a
That is, the
The first
The
Here, the through-holes are formed in a region where the first
At this time, an air
Alternatively, if the
Here, the
By the
Here, the discharge material constituting the
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
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 insulating layer blocks the Ag path to provide a further higher insulating property to the discharge material and improves resistance to static electricity, thereby solving the DC shorting phenomenon when the electric shock protection part 120 is mounted on the electronic part .
Here, it is described that the discharge material includes a SiC-ZnO-based material. However, the discharge material is not limited to the SiC-ZnO based material, and the discharge material may include a component constituting the first
At this time, the
As a result, the
With this configuration, even if part of the
The
The
Meanwhile, the electric
Meanwhile, the electrodes included in the electric
That is, the interval between the pair of
At this time, the interval between the electric
That is, it is preferable to ensure a sufficient distance from the
The electric
Such an electric
Here, the portable
Such a portable
At this time, the housing of the portable
In particular, the metal case may be provided to partially surround or entirely surround the side of the housing of the portable
As such, the electric
Such an
That is, when the
When the plurality of
For example, when the camera of the portable
In addition, when the
Meanwhile, as shown in FIG. 4B, the electric
4C, the electric
As shown in FIG. 4D, the electric
4E, the electric
Such an electric
5A, when the leakage current of the external power source is introduced into the
At this time, the
As a result, the electric
5B, when the static electricity flows from the outside through the
At this time, since the dielectric breakdown voltage Vcp of the
Here, the
Further, as shown in Fig. 5C, when a communication signal is input through the
Here, the capacitances of the
However, as shown in FIG. 6B, it can be seen that the capacitance of the capacitor portion is not influenced by the sensitivity of the mobile communication in the case of 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
Hereinafter, various embodiments of the electric shock protection device according to the embodiment of the present invention will be described in detail with reference to FIGS. 7 to 12. FIG.
The first
For example, as shown in FIG. 7A, end portions of a pair of second
As shown in FIG. 7B, the first
In addition, as shown in FIG. 7C, the first
As shown in FIG. 7D, the first
In addition, as shown in FIG. 7E, the first
The first
8A to 8D, in the electric
That is, as shown in FIG. 8A, the
In addition, a plurality of the electric
That is, in the electric
As described above, the number of the
In another embodiment, as shown in FIGS. 9A to 9G, the plurality of sheet layers constituting the first elementary body and / or the second elementary body may be made of different kinds of ceramic materials .
Specifically, at least one of the plurality of sheet layers forming the first element of the
At this time, the first ceramic material and the second ceramic material may be heterogeneous ceramic materials. Here, the meaning of 'heterogeneous' means that the physical properties are mutually consulted even if the chemical formulas are different from each other or the chemical formulas are the same.
That is, the first ceramic material and the second ceramic material may be a kind of dielectric material in the above-described first elementary body. For example, the first ceramic material may be composed of a metal-based oxide compound containing at least one selected from Er2O3, Dy2O3, Ho2O3, V2O5, CoO, MoO3, SnO2, BaTiO3, and Nd2O3, and the second ceramic material may be composed of ferrite , The first ceramic material may be made of low temperature co-fired ceramic (LTCC), and the second ceramic material may be made of high temperature co-fired ceramic (HTCC).
The first ceramic material and the second ceramic material may be selected from the group consisting of Er2O3, Dy2O3, Ho2O3, V2O5, CoO, MoO3, SnO2, BaTiO3 and Nd2O3. Or a combination of the two.
That is, the first ceramic material and the second ceramic material may be formed in various forms of metal oxide compound, ferrite, low temperature co-fired ceramic (LTCC), and high temperature co-fired ceramic (HTCC) Or cured.
The
As shown in FIG. 9A, the
Hereinafter, for convenience of description, it is assumed that the second ceramic material is a heterogeneous material.
9A to 9G show various arrangement relationships of the first ceramic material and the second ceramic material. The non-hatched portion (A) means that the sheet is made of the first ceramic material, and the hatched portion (B) in the figure means that the sheet is made of the second ceramic material. That is, in FIGS. 9A to 9G, reference numerals A and B refer to the material of the sheet.
More specifically, the entire plurality of sheet layers constituting the
Some of the plurality of sheet layers constituting the
As shown in FIG. 9B, at least one
9C, the
At this time, as shown in FIG. 9D, at least one
9E and 9F, a part of the sheet layers of the plurality of sheet layers constituting the
9G, the electric
As described above, in the electric shock protection device 100 'according to the embodiment of the present invention, the first ceramic material A and the second ceramic material B are selected and the first ceramic material A, which is a different type of ceramic material, The
On the other hand, as shown in Figs. 9C to 9G, the
This is because a uniform shrinkage ratio and structural stability can be achieved in consideration of the matching property of each material due to the bonding of the first ceramic material and the second ceramic material which are different materials. This structural stability makes it possible to improve the reliability of the electric shock protection device.
The first ceramic material, which is a different kind of material, is shown symmetrically on the basis of the
In addition, when the first ceramic material, which is a different kind of material, is partially used for the
It is noted that the first ceramic material, which is a heterogeneous material, can be used in an appropriate thickness with respect to the total thickness of the first elementary body depending on the required characteristics and capacity.
In another embodiment, as shown in FIG. 10, the discharge protection layer may be disposed between the
That is, in the electric
For example, as shown in FIG. 10, the pair of
Specifically, the first
As another embodiment, as shown in Figs. 11A to 11D, the
That is, in the electric
More specifically, as shown in FIG. 11A, the electric shock protection element 100 '' includes a
The
Accordingly, the first
At this time, the through
As shown in FIG. 11A, the pair of
At this time, as shown in FIG. 11B, the electric shock protection element 100 '' may be configured such that the electric
That is, the interval d4 between the pair of
At this time, the interval d5 between the electric
That is, it is preferable to ensure a sufficient distance from the
The width w1 of the pair of
At this time, the first prism body and / or the second prism body may include at least one of Ti, Zn, Ce, Nd and Bi.
When a discharge material layer is applied to a gap formed between the pair of
11C, the electric
In such an electric shock protection device 100 '', the
That is, the
In addition, as shown in FIG. 12C, the plurality of electric
12D, the electric
The first
For example, as shown in FIG. 13A, an end portion of a pair of first
In addition, as shown in FIG. 13C, the second
As shown in FIG. 13D, the first
In addition, as shown in FIG. 13E, the second
The first
In another embodiment, as shown in FIG. 14, the electric
Here, a
Specifically, the pair of
Between the pair of
These
A plurality of
At this time, the
Accordingly, even when fine particles are generated from the
At this time, the
In addition, the
The
For this purpose, the cavity material is made of a material which can be 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.
At this time, the pair of
For example, the
For example, the pair of
In addition, the pair of
However, the cross-section of the electrode is not limited thereto, and the above-described four shapes may be combined with each other, or the end portions facing each other may be formed in a circular shape, a polygonal shape, a wave shape, I will reveal.
Meanwhile, a gap is formed between the pair of
The
15A to 15C, the electric shock protection devices 200 ', 200' 'and 200' '' are formed on the same surface of the
That is, the through
If the first
That is, as shown in 15b, the electric shock protection element 200 '' includes a
In addition, as shown in 15c, the through
With this configuration, the electric shock protection device can variously provide a capacitance suitable for a communication signal of a wireless communication band corresponding to a purpose of use.
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
14:
100, 100 ', 100 ", 200, 200', 200", 200 '
111, 112: electric shock protection sheet layer
121, 122, 123, 124, 125, 126, 127, 128:
111a, 112a, 114a, 114b:
121a, 122a, 123a, 124a, 125a, 126a, 127a, 128a:
115:
116, 164: void 154, 164: through hole
Claims (29)
At least one capacitor portion including a first body having a dielectric constant of 20 F / m or more so as to pass communication signals incoming from the conductor and prevent attenuation of a communication signal passing therethrough; And
An electric shock protection unit including a second elementary body disposed on one side of the first elementary body and at least one pair of internal electrodes spaced apart from each other by a predetermined distance in the second elementary body and a gap formed between the pair of internal electrodes, Including,
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.
Wherein the rated voltage is a national standard rated voltage.
Vcp > Vbr, wherein Vcp is an insulation breakdown voltage of the capacitor section.
Wherein the communication signal has a wireless communication frequency band.
Wherein the capacitor unit is electrically connected in parallel with the electric shock protection unit.
Wherein the pair of inner electrodes are disposed on the same plane.
Wherein the gap is equal to or greater than the gap between the pair of inner electrodes and the height is greater than or equal to the thickness of the pair of inner electrodes.
Wherein the gap is arranged in a vertical or horizontal direction about the internal electrode.
Wherein the plurality of air gaps are provided between the pair of inner electrodes.
Wherein the gap comprises a layer of a discharge material applied to the inner wall at a predetermined thickness along the height direction.
Wherein the discharge material layer comprises a nonconductive material or a semiconductor material including metal particles.
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.
Wherein the first and second main bodies include a dielectric.
Wherein the internal electrode includes at least one of Ag, Au, Pt, Pd, Ni, and Cu.
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.
Wherein an interval between the capacitor portion and the electric shock protection portion is 15 to 100 mu m.
Wherein the capacitor portion includes a capacitor electrode inside the first prism body, and the thickness of the capacitor electrode is 2 to 10 mu m.
Wherein the capacitor portion includes a plurality of capacitor electrodes spaced apart from each other in the first elementary body, and the interval between the capacitor electrodes is 15 to 100 mu m.
Wherein an interval between the internal electrodes is 10 to 100 占 퐉.
And the thickness of the internal electrode is 2 to 10 mu m.
Wherein the volume of the gap is 1 to 15% of the total volume of the electric shock protection element.
And the discharge start voltage due to the static electricity of the internal electrode is 1 to 15 kV.
Circuitry; And
And an electric shock protection element disposed between the conductor and the circuit portion,
At least one capacitor portion including a first body having a dielectric constant of 20 F / m or more to prevent attenuation of a communication signal passing therethrough; And
An electric shock protection unit including a second elementary body disposed on one side of the first elementary body and at least one pair of internal electrodes spaced apart from each other by a predetermined distance in the second elementary body and a gap formed between the pair of internal electrodes, Including,
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.
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.
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.
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.
At least one capacitor portion including a first body having a dielectric constant of 20 F / m or more to pass a communication signal flowing from the conductor without attenuation; And
A second elementary body disposed on one side of the first elementary body, and a gap formed between the pair of internal electrodes and at least a pair of internal electrodes disposed at a predetermined distance inside the second elementary body, And an electric shock protection unit for passing static electricity without insulation breakdown and for blocking a leakage current of an external electric power source flowing from a ground of the circuit unit, wherein the electric shock protection unit satisfies 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.
Wherein the capacitor unit is electrically connected in parallel with the electric shock protection unit.
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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KR1020150146890A KR20170046488A (en) | 2015-10-21 | 2015-10-21 | Circuit protection device and mobile electronic device with the same |
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KR1020150146890A KR20170046488A (en) | 2015-10-21 | 2015-10-21 | Circuit protection device and mobile electronic device with the same |
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KR1020170079020A Division KR101808021B1 (en) | 2017-06-22 | 2017-06-22 | Circuit protection device and mobile electronic device with the same |
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