KR20170046480A - 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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- KR20170046480A KR20170046480A KR1020150146879A KR20150146879A KR20170046480A KR 20170046480 A KR20170046480 A KR 20170046480A KR 1020150146879 A KR1020150146879 A KR 1020150146879A KR 20150146879 A KR20150146879 A KR 20150146879A KR 20170046480 A KR20170046480 A KR 20170046480A
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- electric shock
- shock protection
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- electronic device
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Thermistors And Varistors (AREA)
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
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.
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
The electric
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
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
On the other hand, as shown in FIG. 2B, the electric
2C, the electric
As shown in FIG. 2D, the electric
As shown in FIG. 2E, the electric
As shown in Figs. 3A to 3C, the electric
3A, when the leakage current of the external power source is introduced into the
At this time, the capacitor portion provided in the electric
As a result, the electric
3B, when the static electricity flows from the outside through the
At this time, since the dielectric breakdown voltage Vcp of the capacitor portion provided in the electric
Here, the
Further, as shown in Fig. 3C, when a communication signal is input through the
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
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
The
A plurality of sheet layers 221, 222, 223, 224, 225, 226, 227, 228 having
The first
The
A plurality of
5B, one
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
On the other hand, between the pair of
The
Specifically, the second elementary body may include a
That is, the
Accordingly, 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
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 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
At this time, the
Accordingly, 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 the
At this time, the interval between the electric
That is, it is preferable to ensure a sufficient distance from the
As described above, the electric
In another embodiment, as shown in FIG. 6, 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
The
The
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
Meanwhile, a gap is formed between the pair of
The
In the case where the body included in each of the electric
Meanwhile, the electric
The electric
The body may be formed through a known varistor composition. For example, a plurality of
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
The prepared first
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
The breakdown voltage Vbr of the electric
Each of the first
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
For example, the distance L between any two first
In addition, it is preferable that the distance between the second
Specifically, the first
The second
At this time, the first
In addition, the second
Here, the first
As shown in FIG. 8B, the plurality of unit elements formed by the first
At this time, the two first varistor sheet layers 412 may be stacked on top and bottom of the second
The first
At this time, the central portion of the second
The first
For example, the two second varistor sheet layers 414 may be stacked on top and bottom of the first
Here, the second
At this time, it is preferable that the interval of the second
As described above, by laminating a plurality of the first
The number of the first
Since the first
The
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:
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 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.
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.
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.
Wherein the pair of inner electrodes are disposed on the same plane.
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 plurality of air gaps are provided between the pair of inner electrodes.
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 comprises 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.
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.
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.
Wherein the second internal electrode has a plurality of electrodes spaced apart in a line.
Wherein each of the second internal electrodes is disposed to overlap at least a part of the first internal electrode.
And each of the second internal electrodes is disposed so as not to overlap with the first internal electrode.
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).
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.
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.
Wherein the first elementary body comprises a dielectric.
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.
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.
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.
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.
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.
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150146879A KR20170046480A (en) | 2015-10-21 | 2015-10-21 | Circuit protection device and mobile electronic device with the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150146879A KR20170046480A (en) | 2015-10-21 | 2015-10-21 | Circuit protection device and mobile electronic device with the same |
Publications (1)
Publication Number | Publication Date |
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KR20170046480A true KR20170046480A (en) | 2017-05-02 |
Family
ID=58742945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020150146879A KR20170046480A (en) | 2015-10-21 | 2015-10-21 | Circuit protection device and mobile electronic device with the same |
Country Status (1)
Country | Link |
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KR (1) | KR20170046480A (en) |
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2015
- 2015-10-21 KR KR1020150146879A patent/KR20170046480A/en unknown
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