KR101794542B1 - Electric Device for Skin and Driving Method Thereof - Google Patents

Abstract

The present invention relates to an electric device for skin and a method for operating the electric device. According to an embodiment of the present invention, the electric device for skin comprises: an interface part receiving orders from a user to alter intensity of plasma irradiated to skin; a plasma generation part selectively generating and outputting plasma corresponding to each level of second high voltage using predetermined first high voltage; and a control part controlling the plasma generation part so as to generate second high voltage at the selected level based on the orders from the user received among levels of second voltage. According to the present invention, it is possible to carry out precise and safe procedures.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric device for skin,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dermal device and a driving method thereof, and more particularly, to a dermal device and a method of driving the same, To an electric device for a skin which can directly control the intensity by varying the area of occurrence of the plasma and a driving method of the device.

As the anti-aging industry grows, the facial beauty and skin beauty medical devices markets are growing together. According to a report by a Korean researcher in 2015, the market for skin care equipment is growing at an average annual rate of 7%, and the market size will increase to $ 3.6 billion by 2017. This is because not only the women's advancement into society but also the perception of their appearance has changed, and the demand for skin beauty is increasing, such as dermatology, plastic surgery, etc.,

Currently, a variety of devices using laser, ultrasound, and plasma are being introduced in non-ablation mode. Particularly, recently, as the portable beauty equipment using plasma is emerging, many ordinary people are more interested in skin care and treatment.

The plasma is called a fourth material other than solid, liquid and gas. Generally, it can be artificially generated through arc induction based on a high voltage discharge. The plasma current is appropriately adjusted to a few mA or less so as not to be harmful to the human body When the skin is induced to the skin by a similar action to the laser for skin treatment, it can be used for the purpose of treatment and molding of the epidermal part of the skin by the sublimation action.

Conventionally, an arc induction type plasma electrosurgical apparatus has been introduced in this regard. However, in such a device, since the method for adjusting the output intensity of the plasma controls the voltage value at the time of forming the high voltage, the plasma output is not uniform when the high voltage is changed, and when the operation is performed close to the skin, The distance at which the discharge occurs varies depending on the magnitude of the high voltage, so that uniform treatment is difficult.

Korean Utility Model Registration Bulletin No. 20-0454538 (July 5, 2011) Korean Patent Publication No. 10-2016-0035742 (Apr. 201, 201) Korean Patent Publication No. 10-2016-0072759 (June 23, 2016)

The embodiment of the present invention can be applied to a case where a user can directly control the intensity by varying the generated area of the plasma, for example, so that the output intensity of the plasma can be changed while maintaining the output of the high voltage constant even if the user selects the output intensity of the plasma differently. And a method of driving the apparatus.

A skin cosmetic molding apparatus according to an embodiment of the present invention includes an interface for receiving a user command for varying the intensity of a plasma irradiated to the skin, a plasma corresponding to a second high voltage of a plurality of levels using a designated first high voltage, And a controller for controlling the plasma generator to generate the second high voltage at a selected level based on the received user command among the plurality of second high voltages of the plurality of levels.

Wherein the plasma generating unit includes a high voltage generating unit for generating the first high voltage and a second high voltage generating unit for changing the first high voltage generated in the high voltage generating unit to the second high voltage determined based on the received user command, And a plasma variable portion that generates a plasma corresponding to the second high voltage.

Wherein the plasma variable portion includes a first electrode portion including a first electrode to which the first high voltage is applied, a dielectric portion provided on one side of the first electrode portion, and a second electrode portion disposed to face the first electrode with the dielectric portion therebetween And a second electrode unit including a plurality of second electrodes which are electrically connected to the first electrodes and whose number is determined according to the user command.

The second electrode unit includes a switching element electrically connecting one of the second electrode and the other electrode, and the switching element may perform a switching operation under the control of the control unit.

The switching device may include a high voltage lead relay device.

The plasma generating part is formed on a first substrate, the control part is formed on a second substrate, and the second substrate is disposed apart from the first substrate so as to block noise due to a high voltage generated in the plasma generating part .

A method of driving a skin beauty cosmetic device according to an embodiment of the present invention includes receiving a user command for varying intensity of a plasma irradiated to the skin, generating a plasma using a first high voltage, Selectively generating and outputting a plasma corresponding to two high voltages, and controlling the plasma generator to generate the second high voltage at a selected level based on the received user command among the plurality of second high voltages .

According to the embodiment of the present invention, even if the user sets the plasma output intensity of the beauty device to be different, the distance of the plasma formed on the skin, that is, the distance that the plasma discharge occurs, can be kept constant so that the elaborate and safe operation can be performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an illustration showing an electric device for use in a skin according to a first embodiment of the present invention;
Figure 2 is a view showing the internal structure of Figure 1;
FIG. 3 is a top view and a rear view of the plasma generating apparatus of FIG. 2,
FIG. 4 is a top view and a front view of the plasma generator shown in FIG. 3,
5 is a view for explaining a plasma generating principle of the plasma generating part shown in FIG. 4,
FIG. 6 is a view for explaining the operation principle of the plasma generating unit of FIG. 4,
Figure 7 is a block diagram illustrating the drive mechanism of Figure 1,
FIG. 8 is a block diagram showing the detailed structure of the dermal device according to the second embodiment of the present invention,
9 is a flowchart showing a driving process of the dermal device according to the embodiment of the present invention, and Fig.
10 is a flowchart illustrating a driving process of the dermal device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a view showing an electric device for a skin according to a first embodiment of the present invention, and FIG. 2 is a view showing the internal structure of FIG. 1.

1 and 2, an electric device for a skin (for example, a skin cosmetic device) according to a first embodiment of the present invention includes a main body case 100, a driving part (or driving device) 110, (120-1 to 120-6).

Here, "including some or all of" means that some components such as the interface units 120-1 to 120-6 can be integrated with other components such as the driver 110, To fully understand the invention.

First, the main body case 100 includes a first cover 100-1 disposed on the upper side as viewed in Fig. 1, a second cover 100-2 disposed on the lower side, a head cap 100-3, And a support table 100-4. Here, the support 100-4 may be integrally formed with the upper cover 100-1 as shown in FIG. Here, "integrally formed" means that it can be fixedly formed on the upper cover 100-1. 2, the first substrate on which the controller 200 is formed may be spaced apart from the second substrate on which the plasma generator 220 is formed through the support 100-4. As a result, The main board, that is, the first substrate, can eliminate noise influence and interference due to the high voltage generated in the plasma generating unit 220. The head cap 100-3 is a cap for inserting and fixing the needle (tip) 230 thereinto.

The driving unit 110 includes a charging unit 110-1, a needle coupling unit 110-2 or a collet unit, a control unit 200, a power storage unit 210, a plasma generation unit 220, It can include everything. As shown in FIG. 2, the controller 200 is formed on a first substrate, the first substrate is attached to one side of the first cover 100-1, a power storage unit 210 is formed on the other side of the first substrate, A battery is provided. The plasma generating part 220 is formed on the second substrate and disposed as close as possible to the treatment part in the main body case 100 so as to reduce the loss of the plasma as much as possible and transmit energy to the skin target part. In addition, the plasma generating unit 220 is disposed separately from the main board, i.e., the first board, on which the controller 200 is formed, so as to minimize the influence of noise and interference from the high voltage on the main board. At this time, the first substrate and the second substrate may not be separately shown in the drawing, but may be electrically connected by a lead or cable connected to the connector. Further, the second substrate on which the plasma generating portion 220 is formed is fixed by two supports 100-4 located in front of the first cover 100-1. Here, the front side indicates the direction in which the needle 230 is located.

The charging unit 110-1 is mounted on a separate charger to perform a charging operation and transfers the voltage to the power source storage unit 210 to charge the battery. In this process, the charging unit 110-1 may convert the input AC voltage into a DC voltage and store the converted AC voltage in the power storage unit 210. [ The needle coupling portion 110-2 corresponds to the portion to which the needle 230 is coupled.

The interface units 120-1 to 120-6 include user interface units 120-1, 120-2 and 120-4 to 120-6 for receiving user commands through an interface with the user, A display unit 120-3 for displaying the operation state of the device, and the like. 1, the interface units 120-1 to 120-6 according to the embodiment of the present invention include an output indicator 120-1, a shot button 120-2, a display unit 120-3 A mode button 120-4, a power / level button 120-5, and a memory button 120-6. The output indicator lamp 120-1 is an indicator lamp for indicating the state of the plasma output. The shot button 120-2 is an operation button for outputting plasma, the display unit 120-3 is a screen for displaying an operation state and a set value, and the mode button 120-4 is a continuous or pulse mode. Can be used to select. The power / level button 120-5 can turn the power on / off (ON / OFF) or select the output intensity level 3. If you press and hold for more than 2 seconds, power can be turned off. Or if there is no button operation for 5 minutes, the power can be automatically turned off. The memory button 120-6 is used to recall the three memory settings set by the user.

FIG. 3 is a top view and a rear view of the plasma generating apparatus of FIG. 2, and FIG. 4 is a top view and a front view of the plasma generating portion (plasma changing portion) 5 is a view for explaining the plasma generating principle of the plasma generating section shown in Fig.

3 to 5, the plasma generating unit 220 includes a substrate 300, a connector 310 disposed on one side of the substrate 300, a high voltage generating unit Includes part or all of the part 320 and the plasma generating part 330, and the term "part or all" is the same as the above meaning.

Here, the substrate 300 is an insulating PCB substrate formed of a ceramic or FR4 dielectric. The substrate 300 constituting the plasma generating portion can receive voltage and various (control) signals from the first substrate through the connector 310 as a second substrate according to an embodiment of the present invention. For example, the received voltage is applied to the high voltage generator 320. More precisely, since the high voltage generating part 320 includes a high voltage transformer, a high voltage secondary voltage is formed by the full bridge operation of the voltage applied to the primary side terminal (e.g., coil) and supplied to the plasma generating part 330 do. The high voltage generated by the high voltage generator 320 according to the embodiment of the present invention is referred to as a first high voltage. This first high voltage maintains a constant magnitude according to embodiments of the present invention. For example, a voltage of 1500 V is applied to the plasma generator 330 with a constant magnitude without increasing or decreasing.

3, a plasma generator 330 is formed on the substrate 300. [ 4, the plasma generation unit 330 includes a first electrode 400 and a second electrode 410, and a plurality of switching devices 420-1 and 420-2. . The first electrode 400 and the second electrode 410 have the same or similar area with each other with the substrate 300 interposed therebetween. Here, a part of the substrate 300 corresponding to the mutually opposing area of the first electrode 400 and the second electrode 410 may be referred to as a dielectric portion 300-1 in the embodiment of the present invention. The dielectric portion 300-1 may be formed of the same material as the substrate 300 as a part of the substrate 300 but may be formed separately from the substrate 300. Therefore, But is not limited to one form. One electrode is formed on the first electrode 400 and the second electrode 410 is divided into a plurality of electrodes based on a facing area of the dielectric portion 300-1. Of course, the shape of such an electrode is not particularly limited in the embodiment of the present invention. In other words, any form can be used as long as the generated area of the plasma can be varied.

4, the second electrodes 410 are formed in three, and each of the second electrodes 410 is electrically connected or isolated by the switching elements 420-1 and 420-2, respectively . In other words, the switching elements 420-1 and 420-2 include, for example, a small high-voltage lead relay, and can perform switching operation by an external control signal to electrically connect or isolate the separated electrodes from each other . In this regard, as will be described later in detail, according to this operation, the plasma generating unit 330 can generate a plasma corresponding to the second high voltage of a plurality of levels, respectively. For example, the first high voltage of 1500V is applied from the high voltage generating part 320, but the plasma generating part 330 generates a second high voltage of 1000V according to a user command and generates a plasma corresponding thereto .

As shown in FIG. 5, the first high voltage generated by the high voltage generating unit 320 of FIG. 3 is applied to the first electrode 400 of the plasma generating unit 330 of FIGS. Since the second electrode 410 of the plasma generating unit 330 is grounded to the human body 500, the dielectric may be located between the first electrode 400 and the skin. Thus, Unlike an electrical arc, a high voltage applied to the electrode 400 forms a plasma and is transferred to the skin in the form of a microstreamer. This is compared to the formation of a high-voltage discharge when a high voltage directly touches the skin. Here, the second electrode 410 may be further separately connected to the chassis ground (of the circuit).

The high voltage generated in the high voltage transformer of the high voltage generating part 320 is directly applied to the first electrode 400, for example, the copper plate, so that the high voltage energy is directly transferred to the second electrode 410 The high voltage can be seen to be transformed into a plasma form. The second electrodes 410 are divided into three rectangular shapes on the upper surface and the three second electrodes 410 are connected to the switching elements 420- 1, 420-2) to generate a desired second high voltage and to generate a plasma according to the second high voltage that is generated differently.

FIG. 6 is a view for explaining the operation principle of the plasma generator of FIG. 4;

As shown in FIG. 6, the plasma generator 330 of FIG. 4 according to the embodiment of the present invention can operate in three states as shown in FIGS. 6A to 6C. This state may be referred to as a first mode to a third mode, respectively, according to an embodiment of the present invention, wherein "mode" (c). < / RTI >

In the embodiment of the present invention, as shown in FIG. 6, the plasma output can be directly controlled by adjusting the area of the plasma generating electrode. By the following charge amount transfer formula, the plasma can obtain an output proportional to the area of the electrode do.

(Where k is the dielectric constant of the dielectric, [epsilon] o is the vacuum dielectric constant, A is the area of the parallel plate (or electrode), and d is the distance between the parallel plates)

The switching elements 420-1 and 420-2 of FIG. 4 can be switched to the maximum 4000V as a small high voltage reed relay, so that the 1500V generated by the high voltage generating part 320 can be switched with margin.

As shown in FIG. 6A, the plasma generator 330 generates the first switching device 420-1 and the second switching device 420-2 at the level 1, that is, the second high voltage state of the first level, So that the plasma is output only through the first electrode 400.

6 (b), at the level 2, that is, at the second high voltage state of the second level, only the first switching device 420-1 of the plasma generating unit 330 is turned on and the two second electrodes The plasma is output over the areas of the first and second electrodes 410-1 and 410-2.

6, the first switching device 430-1 and the second switching device 420-1 of the plasma generator 330 are turned on at the level 3, that is, the second high voltage state of the third level, 2 are all turned on, and plasma is output from the area of the three second electrodes 410-1 to 410-3.

6A to 6C, the activation states of the second electrodes 410-1 to 410-3 are represented by hatching according to the embodiment of the present invention.

7 is a block diagram illustrating the driving mechanism of FIG.

7, a dermal device 90 according to the first embodiment of the present invention includes a power generator 700, a controller 710, a plasma generator 720, a display 730, Includes part or all of portion 740, wherein "including some or all" is the same as the preceding meaning.

The power generator 700 stores the power input from the outside in the battery 703 or the battery and provides the stored voltage to the high voltage generator 721 under the control of the controller 710. [ For example, the power storage unit 703 may include a lithium polymer rechargeable battery having a capacity of 7.4V and a capacity of 1000 mAh. When the power button is pressed, power can be turned on and controlled by controlling a switching device such as a FET device. Here, the switching element may be configured in the power source control unit 701. [ The power control unit 701 may apply a control signal or voltage to turn on / off the full bridge type switching devices constituting the high voltage generating unit 721 and the switching unit 723. [ Normally the control voltage will be 5V as a clock signal.

The control unit 710 controls the overall operation of the dermal device 90 as mentioned above. When a user command is input through the interface unit 740, a plasma of a strength corresponding to the user command is output. That is, operates in the first mode by the first command, operates in the second mode by the second command, and operates the dermal device 90 in the third mode by the third command. Here, the first mode to the third mode can be regarded as a method of controlling the plasma generator 725 by the controller 710. The plasma generator 725 varies the intensity of the plasma according to different modes.

The control unit 710 controls the power supply control unit 701 to output a DC voltage (for example, 5 V) to the high voltage generating unit 721 and controls the power supply control unit 701 to perform switching Voltage generator 721 amplifies the input voltage of 5V to generate a high voltage of 1500V and outputs the generated voltage to the plasma generator 725. [

The plasma generating portion 720 includes a high voltage generating portion 721, a switching portion 723, a plasma generating portion (or a plasma variable portion) 725, and a part or all of the tip coupling portion 727. The high voltage generating unit 721 amplifies the 5V voltage input from the power control unit 701 by the full bridge operation of the switching unit 723 and provides the generated high voltage to the plasma generating unit 725. [ The high voltage generated by the high voltage generating unit 721 according to the embodiment of the present invention may be referred to as a first high voltage. The plasma generator 725 generates the second high voltage at various levels based on the received user command using the input first high voltage. For example, the second high voltage of the first level to the second high voltage of the third level can be generated, which has been fully described with reference to FIG. 6, so that further explanation will be omitted. Plasmas of different intensities respectively generated through the plasma generating unit 725 are transmitted to the skin through the tips coupled to the tip coupling unit 727, that is, the needles 230 of FIG.

The switching unit 723 includes a full bridge control unit including four FET devices. The high voltage transformer of the high voltage generating unit 721 is pulse-driven at a frequency of 50 to 100 KHz and a voltage of 5 V rectified in the battery Voltage transformer to amplify the voltage of 1500V. When the high voltage thus amplified is insulated and passed through a dielectric (portion) 725-1 such as ceramic or FR4 constituting the plasma generating portion 725 to generate plasma, the plasma is generated by the two reed relays And the plasma intensity is changed in such a manner that the generated area is controlled through the units 725-2 and 725-3. The generated and controlled plasma is transmitted to the skin tissue through the needle 230 of the metal treatment tip connected through a collet made of a metal such as brass, stainless steel or the like.

FIG. 8 is a block diagram showing a detailed structure of a dermal device according to a second embodiment of the present invention.

8, the electric device molding machine 190 according to the second embodiment of the present invention includes part or all of the plasma generator 800, the controller 810, and the interface 820 , "Including some or all of them" is the same as the preceding meaning.

The plasma generating part 800 may include a high voltage generating part 800-1 and a plasma variable part 800-2. The high voltage generating unit 800-1 generates the first high voltage and provides the first high voltage to the plasma variable unit 800-2. The plasma variable portion 800-2 can generate the second high voltage of plural levels by using the first high voltage under the control of the controller 810. [ More precisely, it can be seen that the second high voltage of plural levels is selectively generated. The plasma variable portion 800-2 generates and outputs a plasma corresponding to a second high voltage of a specific level. Since this has been described in detail in the foregoing, further explanation is omitted. Therefore, in the embodiment of the present invention, how to generate and output plasma is not particularly limited. For example, the shape of the electrode may be changed into various shapes.

The controller 810 controls the plasma generator 800 according to a user command received from the interface unit 820. For example, the controller 810 may control the plasma variable portion 800-2 to output a variable plasma according to an instruction from the user to increase or decrease the intensity of the plasma.

The interface unit 820 can receive a user command through a button, for example. Here, the user command may correspond to a command for varying the intensity of the plasma. In addition, since the user command can be received in various forms such as a button or a wireless method, the interface unit 820 is not limited to a button or a wireless communication module.

The details of the plasma generator 800, the controller 810, and the interface 820 shown in FIG. 8 are not so different from those described in FIG.

FIG. 9 is a flowchart illustrating a driving process of the dermal device according to the embodiment of the present invention.

Referring to FIG. 9 with reference to FIG. 8, a dermal device 190 according to an embodiment of the present invention receives a user command for varying the intensity of plasma irradiated to the skin (S900).

Next, the plasma generator 800 of the dermal device 190 selectively generates and outputs a plasma corresponding to the second high voltage of a plurality of levels using the designated first high voltage (S910).

In step S920, the dermal device 190 controls the plasma generator 800 to generate a second high voltage of a specific level based on the user command received during the plurality of second high voltages. That is, the plasma generator 800 outputs a plasma corresponding to the level of the second high voltage determined by the received user command.

10 is a flowchart illustrating a driving process of the dermal device according to another embodiment of the present invention.

Referring to FIG. 10 for convenience of description, FIG. 10 is a flow chart illustrating an operation of a skin electrical device 90 according to an embodiment of the present invention. Referring to FIG.

In the course of this process, the device for the skin 90 may perform an automatic power off check operation and check whether there is a button selected by the user even after a predetermined time elapses (S1020, S1021, S1022).

If the shot button 120-2 of FIG. 1 is selected, the dermal device 90 may generate an output pulse or a control signal for generating a plasma (S1012). Thus, the dermal device 90 outputs a plasma having a predetermined intensity. In other words, the set plasma intensity is set so that the MCU (Micro Controller Unit), that is, the basic drive pulse of the control unit drives the full bridge drive IC, and the FET device integrated in the IC is controlled so that the high voltage pulse is generated by the high voltage transformer.

However, if there is no selection of the shot button 120-2, the dermal device 90 performs various operations according to the selection of the level increase or decrease button or the menu button.

More specifically, when the level increasing button is selected, the dermal electric appliance 90 is operated so that the plasma of the intensity corresponding thereto is output (S1013, S1014). If the level decreasing button is selected, (S1015, S1016). When the menu button is selected, the dermal device 90 enters the menu state (S1017, S1018) and can display the related information on the display unit.

In this case, the level increase, the level decrease, and the like are related to the adjustment of the plasma generation area as described above. Therefore, in order to control the generation area of the second electrode 410, (420-1, 420-2), it will be omitted from further description.

In addition, the dermal device 90 can set the driving method through the menu button, and the driving method can include the continuous mode and the pulse mode. Here, the continuous mode generates continuous output, and the pulse mode allows plasma to be generated in the form of pulses of the set frequency.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. The codes and code segments constituting the computer program may be easily deduced by those skilled in the art. Such a computer program may be stored in a non-transitory computer readable medium readable by a computer, readable and executed by a computer, thereby implementing an embodiment of the present invention.

Here, the non-transitory readable recording medium is not a medium for storing data for a short time such as a register, a cache, a memory, etc., but means a medium which semi-permanently stores data and can be read by a device . Specifically, the above-described programs can be stored in non-volatile readable recording media such as CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, and the like.

While the invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, 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 present invention.

200, 710, and 810: Controllers 210 and 703:
220, 720, 800: plasma generating unit 230: needle
300: substrate 310: connector
320, 800-1: High voltage generating unit 330, 725: Plasma generating unit
700: power generating unit 730: display unit
740 and 820:

Claims (7)

An interface for receiving a user command for varying the intensity of the plasma irradiated to the skin;
A plasma generator selectively generating and outputting a plasma corresponding to a second high voltage of a plurality of levels using a designated first high voltage; And
And a controller for controlling the plasma generator to generate the second high voltage of a selected level based on the received user command among the plurality of second high voltages,
The plasma generator may include:
And generating and outputting a plasma having an intensity corresponding to the second high voltage of the selected first level when the second high voltage of the first level is selected based on the received user command, And generates and outputs a plasma having an intensity corresponding to the second high voltage of the selected second level when the second high voltage of the second level is selected. The method according to claim 1,
The plasma generator may include:
A high voltage generating unit generating the first high voltage; And
A plasma variable portion for changing the first high voltage generated in the high voltage generating portion to the second high voltage determined on the basis of the received user command and generating a plasma corresponding to the changed second high voltage;
Containing electrical device. 3. The method of claim 2,
The plasma-
A first electrode unit including a first electrode to which the first high voltage is applied;
A dielectric portion provided on one side of the first electrode portion; And
And a plurality of second electrodes disposed in opposition to the first electrode with the dielectric portion interposed therebetween, wherein the number of the plurality of second electrodes, which are electrically responsive to the first electrode according to the user command, And a second electrode portion
Containing electrical device. The method of claim 3,
Wherein the second electrode unit includes a switching element for electrically connecting one second electrode and the second electrode to each other, and the switching element is operated by switching under the control of the control unit. 5. The method of claim 4,
Wherein the switching element includes a high-voltage lead relay element. The method according to claim 1,
The plasma generating part is formed on a first substrate, the control part is formed on a second substrate, and the second substrate is disposed apart from the first substrate so as to block noise due to a high voltage generated in the plasma generating part Electrical device for skin. Receiving a user command to vary the intensity of the plasma irradiated to the skin;
Selectively generating and outputting a plasma corresponding to a second high voltage of a plurality of levels using the first high voltage designated; And
And controlling the plasma generator to generate the second high voltage of a selected level based on the received user command among the plurality of second high voltages,
The step of selectively generating and outputting the plasma may include:
And generating and outputting a plasma having an intensity corresponding to the second high voltage of the selected first level when the second high voltage of the first level is selected based on the received user command, And generates and outputs a plasma having an intensity corresponding to the second high voltage of the selected second level when the second high voltage of the second level is selected A method of driving an electric device for skin.

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