Skin condition detection sensor module and skin condition detection device

Abstract

The present invention provides a skin condition detection sensor module and a skin condition detection device. The skin condition detection sensor module of one embodiment of the present invention includes: a transparent film; a pair of sensor electrodes arranged at a plurality of positions on one side of the transparent film at a predetermined interval; and a floating electrode formed on the entire surface of the transparent film, divided into predetermined sizes, and formed separately from the pair of sensor electrodes. Here, the sensor electrode and the floating electrode are composed of a grid-shaped pattern layer.

Description

Technical Field

[0001] The present invention relates to a skin condition detection sensor and a skin condition detection device, and more particularly to a skin condition detection sensor module and a skin condition detection device that can meet both skin condition detection and sensing sensitivity for identifying touch in a mobile communication terminal. Background Art

[0002] Generally, in order to keep the skin healthy, moisturizing is very important, so it is very important to keep and maintain the moisture of the skin on a daily basis. In particular, in the case of facial skin, skin care is more intensive. For this reason, a device that detects the skin condition using a portable skin detection device or a portable electronic device is being developed.

[0003] However, there is the inconvenience of having to carry a large-sized separate detection device in order to detect the skin condition. In addition, in the case of a portable electronic device with a skin detection sensor, in order to detect the skin condition, additional time is required to measure the skin condition or management and attention for detection, so it is troublesome to use, and the battery of the portable electronic device is consumed when checking the skin condition, thereby limiting the use of the portable electronic device, or it cannot be used when the battery remaining power is insufficient. The above is the actual situation. Summary of the invention

[0004] (Problem to be solved)

[0005] The present invention is proposed in consideration of the points mentioned above, and aims to provide a skin condition detection sensor module and a skin condition detection device that can recognize touch, so that both the sensing sensitivity of detecting the skin condition of the user using only a metal mesh and the sensing sensitivity of recognizing the touch of the user on the touch pad of a mobile communication terminal can be met.

[0006] In addition, another object of the present invention is to provide a skin condition detection device that generates and provides power by collecting energy during a call on a mobile communication terminal, thereby detecting the skin condition of a user without using the power supply of the mobile communication terminal.

[0007] (Methods of solving the problem)

[0008] In order to solve the above-mentioned problems, the present invention provides a skin condition detection sensor module, comprising: a transparent film; a pair of sensor electrodes, which are arranged at multiple positions on one side of the transparent film at predetermined intervals; and a floating electrode, which is formed on the entire surface of the transparent film and is divided into predetermined sizes and is formed separately from the pair of sensor electrodes; wherein the sensor electrodes and the floating electrode are composed of a grid-shaped pattern layer.

[0009] According to a preferred embodiment of the present invention, the pair of sensor electrodes are formed in a concave-convex shape and may include a first sensor electrode and a second sensor electrode. In this case, the floating electrode may be arranged in the concave portion of the first sensor electrode and the second sensor electrode.

[0010] The pair of sensor electrodes may be respectively configured in a comb shape, and the maximum width of the pair of sensor electrodes may be 1 to 20 mm.

[0011] In addition, the transparent film can be one selected from polystyrene (PS), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polyimide (PI), polytetrafluoroethylene (PTFE), liquid crystal polymer (LCP), fluorinated ethylene propylene (FEP), perfluoroalkoxy (PFA), ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), ethylene chlorotrifluoroethylene copolymer (ECTFE), polychlorotrifluoroethylene (PCTFE) and combinations thereof.

[0012] In addition, the pattern layer can be one selected from aluminum (Al), titanium (Ti), chromium (Cr), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), ruthenium (Ru), palladium (Pd), silver (Ag), tin (Sn), neodymium (Nd), tungsten (W), platinum (Pt), gold (Au), molybdenum (Mo), stainless steel (SUS) and combinations thereof.

[0013] As an alternative, the pattern layer can be ITO (indium tin oxide), IZO (indium zinc oxide), IZTO (indium zinc tin oxide), IAZO (indium aluminum zinc oxide), IGZO (indium gallium zinc oxide), IGTO (indium gallium tin oxide), AZO (aluminum zinc oxide), ATO (antimony tin oxide), GZO (gallium zinc oxide), IrO x 、RuO x , TiO2 and a combination thereof.

[0014] At this time, the pattern layer can be formed by a process selected from MOCVD (Metal-Organic Chemical Vapor Deposition), HVPE (Hydride Vapor Phase Epitaxy), thermal deposition, Ebeam deposition, laser deposition, sputtering, and ion plating.

[0015] On the other hand, the present invention provides a skin condition detection device, including: a skin condition detection sensor module; a power generation unit, which collects energy from a mobile communication terminal call to generate electricity; a detection unit, which detects the moisture and ambient temperature of the user's skin based on the signal sensed by the skin condition detection sensor module; an NFC communication unit, which sends the detected information to the mobile communication terminal; and a control unit, which controls the detection of the moisture and ambient temperature of the skin, the generation of the electricity, and the sending of data to the mobile communication terminal. Here, preferably, the skin condition detection sensor module can utilize the skin condition detection sensor module of various embodiments having the structure and features described above.

[0016] According to a preferred embodiment of the present invention, the NFC communication unit can generate power by collecting energy during communication.

[0017] In addition, the power generation unit may include: a rectifying antenna to collect energy during a call of the mobile communication terminal; a super capacitor to store the collected energy; and a regulator to adjust the stored energy at a predetermined voltage.

[0018] In addition, the NFC communication unit may include: a dynamic NFC tag that stores the detected information and collects energy during NFC communication; and an NFC antenna that transmits an NFC signal.

[0019] (Effects of the Invention)

[0020] Through the present invention, a floating electrode is formed which is separated from the sensor electrode in predetermined units by a metal grid. The skin condition is detected by the sensor electrode while the floating electrode can recognize the user's touch on the touch panel of the mobile communication terminal. Therefore, the function of detecting the skin condition using the mobile communication terminal can be generalized.

[0021] In addition, the present invention generates and provides power by collecting energy using a rectifying antenna and a dynamic NFC tag, and can detect the skin condition of the user even if no power is received from the mobile communication terminal. Therefore, it can be used regardless of the battery power of the mobile communication terminal, thereby improving convenience of use.

[0022] In addition, the present invention can detect the skin condition during a call, so there is no need to spend extra time on the user to detect the skin condition or to perform special management or attention for the detection, thereby eliminating the trouble of detecting the skin condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view showing a state in which a skin condition detection sensor module according to an embodiment of the present invention is attached to a mobile communication terminal;

[0024] Figure 2 is an exploded perspective view showing a combined state of a skin condition detection device and a mobile communication terminal according to an embodiment of the present invention;

[0025] Figure 3 is an enlarged view of an example of a skin condition detection sensor module according to an embodiment of the present invention;

[0026] Figure 4 is an enlarged view of another example of the skin condition detection sensor module according to one embodiment of the present invention;

[0027] Figure 5 is a side view showing a state in which a skin condition detection device according to an embodiment of the present invention is combined with a mobile communication terminal;

[0028] Figure 6 is a perspective view showing a state in which a skin condition detection sensor module according to an embodiment of the present invention is combined with a housing of a mobile communication terminal;

[0029] Figure 7 is a layout diagram of a circuit module of a skin condition detection device according to an embodiment of the present invention; and

[0030] Figure 8 yes Figure 7 Block diagram of the . DETAILED DESCRIPTION

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that a person having ordinary knowledge in the technical field to which the present invention belongs can easily implement the present invention. The present invention can be implemented in various 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 in the accompanying drawings, and the same reference numerals are given to the same or similar constituent elements throughout the text.

[0032] Reference Figures 1 to 5 The skin condition detection sensor module 110 according to an embodiment of the present invention includes a transparent film 111 , a pair of sensor electrodes 113 , 114 and a floating electrode 116 .

[0033] The skin condition detection sensor module 110 may be attached to the touch screen of the mobile communication terminal 10. Here, the mobile communication terminal 10 may be a portable electronic device capable of making calls and having a display unit including a touch screen, such as a smart phone. At this time, a protective film may be attached to the mobile communication terminal 10. That is, the skin condition detection sensor module 110 may be attached to the touch screen of the mobile communication terminal 10 or to the protective film of the touch screen.

[0034] The transparent film 111 is made of a film to form a metal mesh. In addition, the transparent film 111 is attached to the touch screen of the mobile communication terminal 10, and thus has a transparent material, so that the display screen of the mobile communication terminal 10 can be clearly seen.

[0035] For example, the transparent film 111 can be one selected from polystyrene (PS), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polyimide (PI), polytetrafluoroethylene (PTFE), liquid crystal polymer (LCP), fluorinated ethylene propylene (FEP), perfluoroalkoxy (PFA), ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), ethylene chlorotrifluoroethylene copolymer (ECTFE), polychlorotrifluoroethylene (PCTFE) and combinations thereof.

[0036] Here, polyethylene terephthalate (PET) and polyimide (PI) are excellent in insulation, heat resistance and bending resistance, and have the characteristics of flexibility, little dimensional deformation and strong heat resistance, so polyethylene terephthalate (PET) or polyimide (PI) is preferably used.

[0037] At this time, the thickness of the transparent film 111 varies depending on the purpose and is not particularly limited, and can be 10 to 150 μm. Preferably, the thickness of the transparent film 111 can be 100 μm. Here, when the thickness of the transparent film 111 is less than 10 μm, it is difficult to support the sensor electrodes 113 and 114 or arrange them, and the possibility of damage by external force is high; on the contrary, when the thickness of the transparent film 111 is greater than 150 μm, the flexibility is reduced.

[0038] A pair of sensor electrodes 113 and 114 are formed at a plurality of locations on one surface of the transparent film 111. Figure 1 and Figure 2, the sensor electrodes 113 and 114 may be formed at a plurality of positions at the upper end of the transparent film 111. Here, the upper end may be a position corresponding to the speaker of the mobile communication terminal 10. That is, when a user uses the mobile communication terminal 10 to make a call, the sensor electrodes 113 and 114 may be formed at a portion that contacts the user's face. For example, the sensor electrodes 113 and 114 may be arranged at 9 positions in a 3x3 array, but there is no particular limitation on the number.

[0039] At this time, the sensor electrodes 113 and 114 are arranged at a predetermined interval. Figure 3 The sensor electrodes 113 and 114 may be formed with the first gap 115 interposed therebetween. That is, the sensor electrodes 113 and 114 may detect capacitance through the first gap 115.

[0040] In addition, the sensor electrodes 113 and 114 may be configured as a concave-convex shape as a whole. That is, the sensor electrodes 113 and 114 may be formed with a concave groove portion formed by depression and a convex convex portion formed by protrusion repeatedly. In this case, the sensor electrodes 113 and 114 may be arranged in parallel.

[0041] Here, the sensor electrodes 113 and 114 are formed of the lattice-shaped pattern layer 112. That is, the sensor electrodes 113 and 114 may be formed of a metal mesh.

[0042] In addition, the sensor electrodes 113 and 114 may include a first sensor electrode 113 and a second sensor electrode 114. At this time, a floating electrode 116 as described below may be formed in the groove portions of the first sensor electrode 113 and the second sensor electrode 114, respectively.

[0043] According to this, even when the user touches near the sensor electrodes 113 and 114, the user's touch can be recognized by the floating electrode 116. That is, when the sensor electrodes 113 and 114 are formed in a dense comb shape, the user's touch cannot be recognized. Therefore, in order to form a space between the sensor electrodes 113 and 114, the sensor electrodes 113 and 114 are formed in a concave-convex shape, and the floating electrode 116 can be formed in the groove portion of the concave-convex space.

[0044] Therefore, not only can the skin condition be detected by the sensor electrodes 113 and 114, but also the touch of the user can be recognized by the floating electrode 116, so the skin condition detection sensor module 110 can be attached to the touch screen of the mobile communication terminal 10. Therefore, it can be used in any mobile communication terminal 10, thereby improving the applicability of the skin condition detection sensor module 110, and the function of detecting the skin condition using the mobile communication terminal 10 can be generalized.

[0045] The floating electrode 116 is formed on the entire surface of the film. At this time, the floating electrode 116 is divided into predetermined sizes. That is, the floating electrode 116 can be formed with the second gap 117 interposed therebetween.

[0046] Accordingly, the portion touched by the user can be recognized by the floating electrode 116. That is, the touch screen of the mobile communication terminal 10 disposed under the floating electrode 116 can directly transmit the user's touch.

[0047] At this time, when the floating electrode 116 is formed only on a portion of the transparent film 111, the visibility of the skin condition detection sensor module 110 may vary depending on the angle. That is, the portion where the floating electrode 116 is formed and the portion where the floating electrode 116 is not formed may be distinguished by stripes. Therefore, in order to allow the user to have the same visibility of the skin condition detection sensor module 110 throughout the entire transparent film 111, the floating electrode 116 may be provided throughout the entire transparent film 111.

[0048] In addition, floating electrode 116 is separated from sensor electrodes 113 and 114 by third gap 118 and fourth gap 119 . That is, first sensor electrode 113 is separated from floating electrode 116 by third gap 118 , and second sensor electrode 114 is separated from floating electrode 116 by fourth gap 119 .

[0049] Here, the floating electrode 116 is formed of the lattice-shaped pattern layer 112. That is, the floating electrode 116 may be formed of a metal mesh.

[0050] At this time, the pattern layer 112 of the sensor electrodes 113, 114 and the floating electrode 116 can be one selected from aluminum (Al), titanium (Ti), chromium (Cr), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), ruthenium (Ru), palladium (Pd), silver (Ag), tin (Sn), neodymium (Nd), tungsten (W), platinum (Pt), gold (Au), molybdenum (Mo), stainless steel (SUS) and a combination thereof.

[0051] As an alternative, the pattern layer 112 may be a transparent electrode. For example, the pattern layer 112 may be formed on ITO (indium tin oxide), IZO (indium zinc oxide), IZTO (indium zinctin oxide), IAZO (indium aluminum zinc oxide), IGZO (indiumgallium zinc oxide), IGTO (indium gallium tin oxide), AZO (aluminum zinc oxide), ATO (antimony tin oxide), GZO (galliumzinc oxide), IrO x 、RuO x , TiO2 and a combination thereof.

[0052] In addition, the thickness of the pattern layer 112 may be 0.01 to 2 μm. Preferably, the thickness of the pattern layer 112 may be 1 μm. When the thickness of the pattern layer 112 is less than 0.01 μm, there are difficulties in the manufacturing process; when the thickness of the pattern layer 112 is greater than 2 μm, the thickness of the skin condition detection sensor module 110 increases and the pattern layer 112 collapses.

[0053] Here, the pattern layer 112 can form a grid with a line width of 1 to 5 μm and a spacing of 150 to 400 μm. Here, when the line width is less than 1 μm, the sensitivity of the skin condition detection and the user's touch is reduced; when it is greater than 5 μm, the visibility is reduced on the entire transparent film 111. In addition, when the spacing of the pattern layer 112 is less than 150 μm, the sensitivity of the skin condition detection and the user's touch is reduced; when it is greater than 400 μm, stripes or irregular patterns can be seen on the entire transparent film 111.

[0054] At this time, the second gaps 117 forming the floating electrodes 116 may be formed at a pitch of 50 to 200 μm. That is, the floating electrodes 116 may be separated at a pitch of 50 to 200 μm. Preferably, the floating electrodes 116 may be separated at a pitch of 100 μm.

[0055] When the pitch of the floating electrodes 116 is less than 50 μm, errors may occur due to reduced sensitivity to a user's touch; when it is greater than 200 μm, streaks or irregular patterns may be seen on the entire surface of the transparent film 111 through the pattern layer 112 .

[0056] The pattern layer 112 as described above can be formed by vacuum deposition. Here, the vacuum deposition method includes CVD (chemical vapor deposition) using a chemical method and PVD (physical vapor deposition) using a physical method. CVD includes MOCVD (Metal-Organic Chemical Vapor Deposition) and HVPE (Hydride Vapor Phase Epitaxy). PVD includes thermal deposition, E-Beam deposition, laser deposition, sputtering, ion plating, etc. Preferably, the pattern layer 112 can be formed by a sputtering process.

[0057] As an alternative, the skin condition detection sensor module may have a comb-shaped sensor electrode. Figure 4 The skin condition detection sensor module 110' is formed of sensor electrodes 113' and 114' in a comb shape. Here, the sensor electrodes 113' and 114' are arranged to cooperate with each other with a first gap 115 having a predetermined interval therebetween.

[0058] In addition, the sensor electrodes 113' and 114' may have a circular shape as a whole. That is, the sensor electrodes 113' and 114' are separated from the floating electrode 116 by the third gap 118' or the fourth gap 119', and the third gap 118' and the fourth gap 119' constituting the outer contour of the sensor electrodes 113' and 114' may be roughly circular. However, the present invention is not limited thereto, and the sensor electrodes 113' and 114' may be formed in various shapes as a whole, such as a quadrilateral.

[0059] In addition, the maximum width of the sensor electrodes 113', 114', for example Figure 4 The diameter D of the circle formed by the third gap 118' and the fourth gap 119' may be 1 to 20 mm. Here, when the diameter D is less than 1 mm, the sensitivity for detecting the skin condition by the sensor electrodes 113' and 114' cannot be satisfied; when the diameter D is greater than 20 mm, the interference with the user's touch is high, so errors may occur.

[0060] In addition, the skin condition detection sensor module 110' is similar to the above-mentioned sensor electrodes 113' and 114' except for the shapes of the sensor electrodes 113' and 114'. Figure 3 The skin condition detection sensor modules 110 shown are the same, so the detailed description is omitted.

[0061] Reference Figure 2 and Figure 5The skin condition detection device 100 according to the embodiment of the present invention includes: a skin condition detection sensor module 110 , a circuit module 120 and a connection part 130 .

[0062] The skin state detection sensor module 110 is configured on the front (i.e., touch screen) of the mobile communication terminal 10, and the circuit module 120 can be configured on the back (i.e., back cover) of the mobile communication terminal 10. At this time, the skin state detection sensor module 110 and the circuit module 120 can be connected through the connection part 130.

[0063] The connection portion 130 may be a flexible connection terminal. For example, the connection portion 130 may be a flexible connection terminal formed by bending, and may connect the skin condition detection sensor module 110 and the circuit module 120. In this case, the connection portion 130 may increase the number of terminals in an array manner so as to uniformly contact the terminals connected to the skin condition detection sensor module 110 and the terminals connected to the circuit module 120.

[0064] Reference Figure 6 , the circuit module 120 may be configured in the housing 12 of the mobile communication terminal. That is, the circuit module 120 is configured at the rear of the mobile communication terminal 10, and when the mobile communication terminal 10 is installed in the housing 12, the circuit module 120 may be attached to the position where the mobile communication terminal 10 is installed in the housing 12. At this time, the circuit module 120 is attached to the housing 12, and the skin condition detection sensor module 110 and the circuit module 120 may be connected through the connection part 130 after the mobile communication terminal 10 to which the skin condition detection sensor module 110 is attached in front is installed in the housing.

[0065] Here, the housing 12 is shown and described as a wallet-type housing as an example, but is not limited thereto and may include a silicon housing that only wraps the rear of the mobile communication terminal 10 .

[0066] Reference Figure 7 and Figure 8 The circuit module 120 includes: a detection unit 121, an MCU 122, a power generation unit 123 and an NFC communication unit 124.

[0067] The detection unit 121 detects the skin moisture and ambient temperature of the user based on the signal sensed by the skin condition detection sensor module 110. In addition, the detection unit 121 is arranged adjacent to the skin condition detection sensor module 110 and the connection unit 130, and may include converters 121a, 121b and a moisture / temperature sensor 121c.

[0068] The first converter 121a may convert the capacitance detected from the skin condition detection sensor module 110 disposed in front of the mobile communication terminal 10 into a digital value. Here, the most stable value is selected from the plurality of sensor electrodes 113, 114 of the skin condition detection sensor module 110 for conversion.

[0069] The second converter 121b can convert the capacitance detected by the moisture detection sensor module configured at the back of the mobile communication terminal 10 into a digital value. Here, when the user grasps the mobile communication terminal 10, the moisture detection sensor module configured at the back of the mobile communication terminal 10 is used to detect the skin moisture of the hand as an indirect reference.

[0070] At this time, the lower end of the skin detection sensor held by the user during the call is set as the reference, and the upper end is set as the humidity sensing part of the relative detection value of the detection reference, so as to confirm whether it is skin-specific data within the reference value range.

[0071] The moisture / temperature sensor 121c can detect the moisture state of the skin through the first converter 121a and the second converter 121b. In addition, the moisture / temperature sensor 121c can detect the ambient temperature.

[0072] The MCU 122 is arranged roughly in the center of the circuit module 120, and controls the detection unit 121, the power generation unit 123, and the NFC communication unit 124. That is, the MCU 122 controls the detection of skin moisture and ambient temperature, generates power, and transmits data to the mobile communication terminal 10. In addition, the MCU 122 may be a low-power MCU that can receive power supply through energy harvesting of the power generation unit 123.

[0073] At this time, the MCU 122 may include an LED indicator light 122a and an input button 122b (see Figure 8 ). The LED indicator light 122a can indicate that the skin condition is being detected by the skin condition detection sensor module 110. The input button 122b can be used by the user to select to start or end the detection of the skin condition.

[0074] Alternatively, the MCU 122 can control the user to automatically perform skin condition detection during a call through the mobile communication terminal 10. That is, the MCU 122 can detect the skin condition through the skin condition detection sensor module 110 regardless of whether the input button 122b is input or not when the mobile communication terminal 10 is in a call.

[0075] Accordingly, the user does not need to spend extra time or operate buttons for skin condition detection, and the user does not need to manage or pay special attention for detection. Thus, the trouble of skin condition detection can be eliminated, thereby improving the convenience of the user.

[0076] The power generation unit 123 generates power by collecting energy during a call of the mobile communication terminal 10. In addition, the power generation unit 123 is disposed at the lower end of the circuit module 120, and may include a rectifying antenna 123a, a super capacitor 123b, and a regulator 123c.

[0077] The rectifying antenna 123a collects the power generated during the call of the mobile communication terminal 10 and can collect energy. As a rectifying type antenna, the rectifying antenna 123a collects the radio waves during the call of the mobile communication terminal 10 and can directly convert them into DC power. In addition, the rectifying antenna 123a can also absorb the radio waves during the communication of the mobile communication terminal 10 and convert them into DC power.

[0078] The super capacitor 123b can store energy collected by the rectifying antenna 123a. The regulator 123c adjusts the energy stored in the super capacitor 123b to a predetermined voltage to supply power (VDD). That is, the regulator 123c can supply power (VDD) to the MCU 122, the LED indicator 122a, the input button 122b, the moisture / temperature sensor 121c, the first converter 121a, and the second converter 121b. Here, the super capacitor 123b and the regulator 123c can function as a power stabilization circuit.

[0079] According to this, it is not necessary to receive power supply from the mobile communication terminal 10, but it is possible to generate power by itself to detect the skin condition. Therefore, it can be used regardless of the battery power of the mobile communication terminal 10, thereby improving the convenience of use. That is, the use will not be restricted even if the remaining battery power of the mobile communication terminal 10 is insufficient. In addition, the skin detection does not consume the battery, so the battery usage time will not be shortened.

[0080] The NFC communication unit 124 transmits the information detected by the moisture / temperature sensor 121c to the mobile communication terminal 10. In addition, the NFC communication unit 124 is disposed at the upper end of the circuit module 120, and may include a dynamic NFC tag 124a and an NFC antenna 124b.

[0081] The dynamic NFC tag 124a stores the information detected by the moisture / temperature sensor 121c and can send it to the mobile communication terminal 10. At this time, the dynamic NFC tag 124a can perform collection. That is, the dynamic NFC tag 124a absorbs the radio waves from the NFC antenna 124b and converts them into DC power when sending the stored detection information to the mobile communication terminal 10.

[0082] At this time, the dynamic NFC tag 124a can send the collected power to the regulator 123c. Accordingly, the energy collected during the call of the mobile communication terminal 10 plus the energy collected during the NFC communication can provide power (VDD).

[0083] The NFC antenna 124 b may receive an NFC signal from the dynamic NFC tag 124 a. In addition, the NFC antenna 124 b may exchange data with the mobile communication terminal 10.

[0084] At this time, the NFC communication unit 124 may start communication after a predetermined delay in order to prevent a conflict with the NFC function of the mobile communication terminal 10 itself.

[0085] An embodiment of the present invention has been described above, but the concept of the present invention is not limited to the embodiment presented in this specification. Instead, a technician who understands the concept of the present invention can easily propose other embodiments within the same scope of the concept by adding, changing, deleting, increasing, etc., constituent elements, and this is also included in the scope of the concept of the present invention.

Claims

1. A skin condition detection device for detecting a skin condition including a moisture condition of a user's skin, the skin condition detection device comprising: A skin condition detection sensor module is attached to the touch screen on the front of the mobile communication terminal or to the protective film of the touch screen; a circuit module, which is disposed at the rear of the mobile communication terminal and includes a detection unit, which detects the moisture content and the surrounding temperature of the user's skin based on the signal sensed by the pair of sensor electrodes of the skin condition detection sensor module; and a connecting portion connecting a terminal of the skin condition detection sensor module and a terminal of the circuit module, Wherein, the skin condition detection sensor module includes: A transparent film, attached to the touch screen or the protective film to cover the entire display screen of the touch screen; The pair of sensor electrodes are arranged at intervals at a plurality of positions on one side of the transparent film; and The floating electrode is formed on the entire surface of the transparent film and is divided into predetermined sizes and is formed separately from the pair of sensor electrodes. The sensor electrode and the floating electrode are composed of a grid-shaped pattern layer. When a user uses the mobile communication terminal to make a call, the sensor electrode detects a capacitance signal to detect the state of the user's skin in contact with the transparent film; and When a user touches the transparent film to input information to the mobile communication terminal, the floating electrode transmits the user's touch to the touch screen.

2. The skin condition detection device according to claim 1, characterized in that: The pair of sensor electrodes is configured in a concave-convex shape and includes a first sensor electrode and a second sensor electrode; The floating electrode is disposed in the groove portion of the first sensor electrode and the second sensor electrode.

3. The skin condition detection device according to claim 1, characterized in that: The pair of sensor electrodes are respectively configured in a comb shape, The maximum width of the pair of sensor electrodes is 1 to 20 mm.

4. The skin condition detection device according to claim 1, characterized in that: The transparent film is one selected from polystyrene, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyimide, polytetrafluoroethylene, liquid crystal polymer, fluorinated ethylene propylene, perfluoroalkoxy, ethylene-tetrafluoroethylene copolymer, polyvinylidene fluoride, ethylene chlorotrifluoroethylene copolymer, polychlorotrifluoroethylene and combinations thereof.

5. The skin condition detection device according to claim 1, characterized in that: The pattern layer is one selected from aluminum, titanium, chromium, iron, cobalt, nickel, copper, zinc, ruthenium, palladium, silver, tin, neodymium, tungsten, platinum, gold, molybdenum, stainless steel and a combination thereof.

6. The skin condition detection device according to claim 1, characterized in that: The pattern layer is on ITO, IZO, IZTO, IAZO, IGZO, IGTO, AZO, ATO, GZO, IrO x 、RuO x , TiO2 and a combination of these.

7. The skin condition detection device according to claim 1, characterized in that: The pattern layer is formed by a process selected from MOCVD, HVPE, thermal deposition, Ebeam deposition, laser deposition, sputtering, and ion plating.

8. The skin condition detection device according to claim 1, characterized in that: The circuit module comprises: A power generation unit, which collects energy from calls in mobile communication terminals to generate electricity; an NFC communication unit, sending the detected information to the mobile communication terminal; and The control unit controls the detection of the moisture content and the ambient temperature of the skin, the generation of the electric power, and the transmission of data to the mobile communication terminal.

9. The skin condition detection device according to claim 8, characterized in that: The NFC communication unit generates electric power by collecting energy during communication.

10. The skin condition detection device according to claim 8, characterized in that: The power generation unit comprises: A rectenna for collecting energy during a call of the mobile communication terminal; A supercapacitor to store the collected energy; and A regulator regulates the stored energy at a predetermined voltage.

11. The skin condition detection device according to claim 9, characterized in that: The NFC communication unit includes: a dynamic NFC tag that stores the detected information and harvests energy during NFC communication; and NFC antenna, sends NFC signals.

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