KR20170063178A - 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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- KR20170063178A KR20170063178A KR1020150169241A KR20150169241A KR20170063178A KR 20170063178 A KR20170063178 A KR 20170063178A KR 1020150169241 A KR1020150169241 A KR 1020150169241A KR 20150169241 A KR20150169241 A KR 20150169241A KR 20170063178 A KR20170063178 A KR 20170063178A
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- Prior art keywords
- electric shock
- capacitor
- shock protection
- electrode
- 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)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (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 element disposed between a body contactable conductor of an electronic device of the present invention and a built-in circuit, comprising: a first body; a plurality of first internal electrodes arranged in a line in the first body; And a second internal electrode arranged to be spaced apart from the other electrodes of the internal electrode, and a second internal electrode disposed on one side of the first body of the electric shock protection element for passing a communication signal flowing from the electric conductor, Wherein at least one of the first and second bodies is formed by stacking a plurality of sheet layers, and the plurality of sheet bodies are stacked and arranged so that at least one of the plurality And a plurality of sheet layers including sheet layers including the same dielectric material among the plurality of sheet layers. Accordingly, there is an advantage that the user and the internal circuit can be protected from the leakage current and the static electricity caused by the external power source. Also, data loss can be reduced in a wide frequency band.
Description
BACKGROUND OF THE
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, There is a fear of wearing. Accordingly, a portable electronic device such as a cellular phone employing a metal case is required to protect the user from such a leakage current.
On the other hand, a conventional device having a function of protecting an internal circuit or a function of cutting off a leakage current in the above-mentioned high-voltage static electricity is a device in which a capacitance is increased to prevent signal delay or distortion on a data line transmitting a high- (For example, a device having a low electrostatic capacitance of less than 1 pF) has been used. However, a normal device having a significantly low capacitance remarkably increases data loss in a communication frequency band of an electronic device having the device, .
Accordingly, an electrostatic discharge preventing function prevents static electricity having an instantaneous high voltage from flowing from the outside through the conductor to destroy the internal circuit, and a leakage current preventing flow of the leakage current through the conductor, It is urgently required to develop a device capable of preventing data loss in a wide frequency band.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a power supply circuit capable of simultaneously protecting an internal circuit and / or a user from a leakage current caused by static electricity or an external power supply, An object of the present invention is to provide an electric shock protection device and a portable electronic device having the same.
One aspect of the present invention provides an electric shock protection device. The electric shock protection device is disposed between a body contactable conductor of an electronic device and an internal circuit portion. The electric protection element includes a first body, a plurality of first internal electrodes arranged in a line in the first body, 1) an electric shock protection unit comprising a first internal electrode and a second internal electrode spaced apart from another column; And a capacitor electrode disposed inside the second elementary body so that at least some of the surfaces of the second elementary body and the electrode are overlapped with each other, the capacitor element being disposed inside the second elementary body so as to pass a communication signal flowing from the conductor, A capacitor portion including a capacitor; Wherein the second elementary body has a plurality of groups each including a plurality of sheet layers arranged in a laminated manner and sheet layers including the same dielectric material among the plurality of sheet layers.
The plurality of groups included in the second elementary body may include a first group and a second group, and the sheet layers belonging to the first group and the sheet layers belonging to the second group may be alternately stacked.
In addition, the group is BeO, MgO, LaCrO 3, PbTiO 3, (Ba, Pb) TiO 3,
In addition, it is possible to pass the static electricity without breaking the insulation when the static electricity flows from the conductor, and to prevent the leakage current of the external power source flowing from the ground of the circuit part.
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.
Also, Vcp > Vbr, where Vcp may be the dielectric breakdown voltage of the capacitor portion.
Also, the capacitor unit may be electrically connected in parallel with the electric shock protection unit.
In addition, the communication signal may have a wireless communication frequency band.
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).
Also, the distance between the capacitor portion and the electric shock protection portion may be 15 to 100 mu m.
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.
Another aspect of the present invention provides a portable electronic device having an electric shock protection function. The portable electronic device comprising: a human contactable conductor; Circuitry; And an electric shock protection element disposed between the conductor and the circuit portion, wherein the electric shock protection element includes a first elementary body, a plurality of first inner electrodes disposed in a line in the first elementary body, An electric shock protection unit including a second internal electrode spaced apart from an electrode and another column; And a capacitor electrode disposed inside the second elementary body so that at least some of the surfaces of the second elementary body and the electrode are overlapped with each other, the capacitor element being disposed inside the second elementary body so as to pass a communication signal flowing from the conductor, A capacitor portion including a capacitor; Wherein the second elementary body has a plurality of groups each including a plurality of sheet layers arranged in a laminated manner and sheet layers including the same dielectric material among the plurality of sheet layers.
In addition, in order to pass the static electricity through the static electricity from the conductor and prevent the leakage current of the external power source flowing from the ground of the circuit part, and to pass the communication signal without being insulated from the static electricity, Can be satisfied.
Vbr> Vin, Vcp> Vbr
Here, Vbr is the breakdown voltage of the electric shock protection device, Vin is the rated voltage of the external power supply of the electronic device, and Vcp is the breakdown voltage of the capacitor.
In addition, the capacitor unit may be provided at least one of the upper and lower portions of the electric shock protection unit, or at least one of both the upper and lower portions of the electric shock protection unit at regular intervals.
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 an embodiment of the present invention, there is provided an electric shock protection device and a portable electronic device including the electric shock protection device. The electric shock protection device includes the electric shock protection unit including the dissimilar materials, thereby protecting the user and the internal circuit from leakage current and static electricity There are advantages. Also, data loss can be reduced in a wide frequency band.
1 is a perspective view of an electric shock protection device according to an embodiment of the present invention. FIG. 1B is an exploded perspective view of an electric shock protection unit included in an electric shock protection device, and FIG. 1C is a longitudinal sectional view of FIG. 1A,
2 is a longitudinal sectional view of an electric shock protection device according to an embodiment of the present invention,
FIG. 3 is a view showing an electric shock protection unit included in an embodiment of the present invention. FIG. 3 (a) is an exploded perspective view of the electric shock protection unit, FIG. 3
FIG. 4 is a perspective view of an electric shock protection unit included in an embodiment of the present invention, FIG. 4A is an exploded perspective view of the electric shock protection unit, FIG. 4B is a longitudinal sectional view of FIG.
FIG. 5 is a longitudinal sectional view of an electric shock protection unit included in an embodiment of the present invention, FIGS. 5A and 5B are diagrams illustrating various positional relationships of internal electrodes included in the electric shock protection unit,
6A and 6B are views showing various arrangements of the electric shock protection unit and the capacitor unit in the electric shock protection device according to the embodiment of the present invention,
7A to 7E are views showing various forms of a capacitor portion made of dissimilar materials in an electric shock protection device according to an embodiment of the present invention,
8A to 8E are conceptual diagrams showing an application example of an electric shock protection device according to an embodiment of the present invention,
FIGS. 9A to 9C 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, and
FIGS. 10A and 10B are graphs showing the simulation results of the pass frequency band according to the capacitance.
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.
1A to 1C, an electric
The electric
Vbr> Vin where Vbr is the sum of the breakdown voltages formed between the nearest first
At this time, the
The first
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, if 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 second 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
The internal electrodes included in the
The
The breakdown voltage Vbr of the electric
The first
At this time, the first internal electrode or the second internal electrode does not leak static electricity or leakage current to adjacent external electrodes (not shown) of the
For example, a distance L between any two first
The distance between the second
More specifically, the first
At this time, the first
In addition, the second
Here, the first
When the plurality of sheets are stacked, the electric
4A, the first and second varistor sheet layers 211 and 211 may be laminated so that the first
The
The
The conductive component may include at least one selected from the group consisting of Ag, Au, Cu, Ni, Pd, and Pt. The conductive component may be included in the composition as a granule, wherein the average particle size of the conductive component may be 0.1 to 10 탆.
The binder component may be used without limitation in the case of conventional binders used for producing external electrodes, and as a non-limiting example, polyvinylbutyral resin, polyvinylacetate resin, ethyl cellulose , Nitrocellulose, polyacrylic resin, and the like.
In addition, the above-mentioned solvent can be used without limitation in the case of ordinary water or organic solvent which does not affect the above-mentioned conductive component and glass component to be used, and which does not cause problems in dissolving additives such as a binder component and other dispersant. As a non-limiting example, butoxyethoxy ethyl acetate), ethylene glycol, diethylene glycol, triethylene glycol, ethylene glycol monobutyl ether, propylene glycol monoethyl ether propylene glycol monomethyl ether, diethylene glycol methyl ether, glycerol, diethylene glycol ethyl ether acetate, terpineol, menthol, ), Diethylene glycol methyl ethyl ether (MEDG), and butyl diglycol (BDG), which may be used alone or in combination.
The outer electrode may further include a plating layer (not shown) on the surface of the electrode to further improve ease of soldering and electrical connection when the device is mounted on a circuit board by flow soldering or the like. The plating layer may be formed using a conventional plating method, and may include at least one of metals such as nickel, tin, copper, and tin-lead alloys. At this time, when two or more kinds of metals are included, two or more kinds may be included in one layer in the form of a mixture or an alloy, or a plating layer may be formed of a plurality of layers and each layer may be formed of one kind of metal . The thickness of the plating layer may be 0.1 to 5 탆, but is not limited thereto.
Meanwhile, a glass coating layer (not shown) may be formed on the outer surface of the elementary body including at least a contact region (A 'in FIG. 1A) between the first
The glass coating layer prevents the peeling of the elementary body, which may be formed by stacking a plurality of sheets, between the sheets, thereby improving the mechanical strength of the elementary body and further enhancing the adhesive force between the outer electrode and the elementary body. It is possible to prevent the plating solution from penetrating into the inside of the element body in the step of forming the plating layer which can be further included in the outer surface.
Meanwhile, since the
The
Vcp > Vbr where Vbr is the breakdown voltage of the electric shock protection element, and Vcp is the breakdown voltage of the capacitor portion.
The
3B, the
In this case, the second elementary body is formed by stacking a plurality of sheet layers 121, 122, 123, 124, 125, 126, 127, 128 and a plurality of groups of sheet layers 121, 122, 123, 124, 125, 126, 127, 128 including the same dielectric material Respectively. That is, the plurality of sheet layers include at least two kinds of dielectric materials. At this time, different dielectric materials can remove noise in different frequency bands. Thus, since at least two types of dielectric materials are included in the first prism, data loss due to noise can be reduced in a wide frequency band.
In addition, the group is BeO, MgO, LaCrO 3, PbTiO 3, (Ba, Pb) TiO 3,
The plurality of groups included in the second elementary body may include a first group and a second group, and the sheet layers belonging to the first group and the sheet layers belonging to the second group may be alternately stacked.
That is, in the electric
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.
As shown in Figs. 7A to 7E, the plurality of sheet layers constituting the
More specifically, at least one of the plurality of sheet layers constituting 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 formed in various forms of metal oxide compound, ferrite, low temperature co-fired ceramic (LTCC), and high temperature co-fired ceramic (HTCC) Or cured.
Meanwhile, in the
As shown in FIG. 7A, the
Hereinafter, for convenience of description, it is assumed that the second ceramic material is a heterogeneous material.
7A to 7D 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. 8A to 7D, reference numerals A and B refer to the material of the sheet.
More specifically, as shown in FIG. 7B, the entire plurality of sheet layers constituting the
7C and 7D, some of the plurality of sheets constituting the
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 kind of ceramic material, By arranging the
For example, as shown in FIGS. 7A to 7D, when the second ceramic material, which is a different type of ceramic material, is disposed in the
7E, at least one
With this configuration, the electric
In order to prevent attenuation of a communication signal passing through the second
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
1, one
As described above, the electric
Meanwhile, the above-described electric
Meanwhile, the electrodes included in the electric
The distance between the
Meanwhile, the electric
1B, the
6 to 7, various embodiments of the electric shock protection device according to the embodiment of the present invention will be described in more detail. As shown in FIG. 6A, the electric shock protection device 100 ' A plurality of electric
In addition, the number of the
The above-described 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. 8B, the electric
8C, the electric
As shown in FIG. 8D, the electric
8E, the electric
Such an electric
9A, when the leakage current of the external power source flows into the
At this time, the
As a result, the electric
Further, as shown in Fig. 9B, when static electricity flows from the outside through the
Since the dielectric breakdown voltage Vcp of the
Here, the
Further, as shown in Fig. 9C, when a communication signal flows through the
Here, the capacitances of the
However, as shown in FIG. 10B, it can be seen that the capacitance of the capacitor portion is less affected by the reception sensitivity 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
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:
110, 210: an electric shock protection part 120: a capacitor part
111, 112: varistor sheet layer
111a, 111b, 112a: internal electrodes
Claims (17)
An electric shock protection unit comprising a first element, a plurality of first internal electrodes arranged in a line within the first element, and a second internal electrode spaced apart from the first internal electrode by a distance from the first internal electrode; And
And a capacitor electrode disposed inside the second elementary body so that at least a part of the second elementary body and the electrode overlap with each other, the capacitor element being disposed in the first elementary body of the shielding protection element for passing a communication signal flowing from the conductor, A capacitor portion; , ≪ / RTI &
Wherein the second elementary body has a plurality of groups each including a plurality of sheet layers stacked and including sheet layers including the same dielectric material among the plurality of sheet layers.
The plurality of groups included in the second elementary body include a first group and a second group,
Wherein the sheet layers belonging to the first group and the sheet layers belonging to the second group are alternately laminated.
Said set 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, the group consisting of Mn-based oxide, Ni oxide, Mn oxide, Al 2 O 3 and their solid solutions of the selected one or more, SiC, CdTe, TiC, TiN, B 4 C, Si 3 N 4, BN, TiB 2, and made of AlN group certificate selected at least one, or, Ni-Zn ferrite, and Mn-Zn Based ferrite; and at least one selected from the group consisting of ferrite and ferrite.
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.
Vcp > Vbr, wherein Vcp is an insulation breakdown voltage of the capacitor section.
Wherein the capacitor unit is electrically connected in parallel with the electric shock protection unit.
Wherein the communication signal has a wireless communication frequency band.
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 a distance between the capacitor portion and the electric shock protection portion is 15 to 100 mu m.
Wherein the thickness of the capacitor electrode is 2 to 10 mu m.
Wherein an interval between the capacitor electrodes is 15 to 100 mu m.
Circuitry; And
And an electric shock protection element disposed between the conductor and the circuit portion,
An electric shock protection unit comprising a first element, a plurality of first internal electrodes arranged in a line within the first element, and a second internal electrode spaced apart from the first internal electrode by a distance from the first internal electrode; And
And a capacitor electrode disposed inside the second elementary body so that at least a part of the second elementary body and the electrode overlap with each other, the capacitor element being disposed in the first elementary body of the shielding protection element for passing a communication signal flowing from the conductor, A capacitor portion; , ≪ / RTI &
Wherein the second elementary body has a plurality of groups each including a plurality of sheet layers stacked and composed of sheet layers including the same dielectric material among the plurality of sheet layers.
Wherein the static electricity is passed through the conductor without passing through the dielectric breakdown and the leakage current of the external power source flowing from the ground of the circuit part is cut off and the communication signal is passed through without passing through the dielectric breakdown from the static electricity A portable electronic device having an electric shock protection function:
Vbr> Vin, Vcp> Vbr
Here, Vbr is the breakdown voltage of the electric shock protection device, Vin is the rated voltage of the external power supply of the electronic device, and Vcp is the breakdown voltage of the capacitor.
Wherein the capacitor unit has an electric shock protection function that is provided on at least one of the upper and lower portions of the electric shock protection unit, or both the upper and lower portions of the electric shock protection unit at regular intervals.
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.
Priority Applications (1)
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KR1020150169241A KR20170063178A (en) | 2015-11-30 | 2015-11-30 | Circuit protection device and mobile electronic device with the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150169241A KR20170063178A (en) | 2015-11-30 | 2015-11-30 | Circuit protection device and mobile electronic device with the same |
Publications (1)
Publication Number | Publication Date |
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KR20170063178A true KR20170063178A (en) | 2017-06-08 |
Family
ID=59221486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020150169241A KR20170063178A (en) | 2015-11-30 | 2015-11-30 | Circuit protection device and mobile electronic device with the same |
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KR (1) | KR20170063178A (en) |
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2015
- 2015-11-30 KR KR1020150169241A patent/KR20170063178A/en unknown
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