JP6526728B2 - Nail decoration sheet - Google Patents

Description

  The present invention relates to a nail decoration sheet attached to a nail of a user and used as an artificial nail, and in particular, provided with electronic paper and displaying an arbitrary image (figure or pattern) or characters on the electronic paper. About things.

  Conventionally, so-called nail art is widely used to decorate the fingertips of women. Among the nail art, it is possible to easily decorate a fingertip by simply pasting on a nail, and it is also easy to replace it properly. In addition, the artificial nails can be longer than the actual nail length of the user, which can provide a better view.

  However, even if it is easy to change, it is necessary to peel off the adhesion, and it is difficult to change it depending on the day, or the time zone of the morning, day and night, and further depending on the mood. Therefore, Patent Document 1 proposes a nail decoration sheet that uses electronic paper made of kosteric liquid crystal and allows the display content of the electronic paper to be appropriately rewritten by NFC (Near Field Communication: Near Field Communication). . Patent Document 2 is a nail chip on which an image display device is mounted.

JP 2012-20035 A JP, 2009-201999, A

  The above-mentioned prior art can display arbitrary images and characters by using electronic paper. However, the battery, which increases in volume, is embedded in the sheet body of the nail decoration sheet together with the substrate and the like, and the capacity is small, so the electronic paper is also non-volatile, and the image and characters are still images It is difficult only to display. In addition, it is also difficult to display a full color image which consumes more power.

  An object of the present invention is to provide a nail decoration sheet capable of displaying an arbitrary image or character by using an electronic paper, which can be mounted without discomfort even when a battery used to drive the display of the electronic paper has a large capacity. It is possible to provide a nail decoration sheet that can be made.

  The nail decoration sheet according to the present invention comprises an artificial nail body attached to the nail of the user and an electronic paper provided on the surface of the artificial nail body, and any image or character is displayed on the electronic paper. In the nail decoration sheet, the electronic paper is disposed on the nail plate from the center to the tip side of the user's nail, and on the nail meniscus on the proximal side of the user's nail in the artificial nail body, One or more raised decorative portions are provided, and a battery for supplying power for driving display of the electronic paper is disposed in the decorative portion.

  According to the above configuration, in the nail decoration sheet used as an artificial nail, the electronic paper can be displayed from the center to the center of the user's nail in order to make it possible to display any image or character on the surface using the electronic paper. On the nail plate on the side of the nail plate, on the nail half moon of the proximal end side of the user's nail in the artificial nail body, for example, a jewel or a crystal, a raised decorative portion or Provide multiple. And in the decoration part, the battery which supplies the electric power for display-driving the said electronic paper can be arrange | positioned without sense of incongruity.

  Therefore, even if any image or character is displayed, according to the present invention, conventionally, it is difficult to display only a still image using non-volatile electronic paper in terms of power consumption. Since the capacity of the battery to be embedded can be made relatively large, it is possible to perform frame-by-frame advance image updating and display at appropriate timing, and moving image or full-color image updating and display in a short time. In this way, an electronic paper can be used to make the nail decoration sheet capable of displaying an arbitrary image or character, which can be entertaining or attractive.

  Further, in the nail decoration sheet according to the present invention, the artificial nail body is formed to extend from the toe of the user, and the electronic paper is further displayed on the back side of the portion extended from the toe. It is characterized by arranging a battery that supplies power.

  According to the above configuration, the artificial nail is often formed to be longer (larger) than the length of the user's nail, for better viewing. The present invention takes advantage of this to add to the decoration on the nail half moon and also to the back side of the part extending from the user's actual toe in the artificial nail body on which the electronic paper is mounted. , Arranging a battery for supplying power to drive display of the electronic paper. Normally, both sides of the nail curl, and due to the curl, a dome-shaped space exists on the back side of the nail, and the battery is embedded in the space without a sense of discomfort.

  Thus, the battery can be made larger in total capacity.

  Furthermore, the nail decoration sheet according to the present invention is characterized in that the battery is disposed from a portion inside a predetermined length from the tip of the artificial nail body to the fingertip of the user.

  According to the above configuration, the battery is arranged from the inside of the tip of the artificial nail body by a predetermined length, for example, 1 mm.

  Therefore, when holding the pen or holding the fist, the toe comes into contact before the battery comes in contact with the palm of the hand, so that the user can be prevented from feeling discomfort.

  Further, in the nail decoration sheet according to the present invention, the battery is disposed from the position separated by a predetermined distance from the user's fingertip to the tip side of the artificial nail body.

  According to the above configuration, the battery is arranged from a position separated by a predetermined distance, for example, 1 mm from the user's fingertip.

  Therefore, for example, when the fingertip is pressed and spreads flat by reaching a desk or the like, the battery can be prevented from coming into contact with the fingertip of the user, and discomfort caused to the user can be suppressed.

  Furthermore, the nail decoration sheet according to the present invention is characterized by including power receiving means for supplying power received by NFC to the battery for charging.

  According to the above configuration, it is possible to supply the charging power without contact.

  Therefore, compared with the case where the electrode is provided on the nail decoration sheet to perform the contact power supply, it is possible to eliminate the structurally weak part such as the electrode and to improve the airtightness, and for the user's finger during charging. The degree of freedom (range of movement) can be increased.

  Further, in the nail decoration sheet according to the present invention, the display driving means for displaying and driving the electronic paper is characterized by displaying the data received by the NFC on the electronic paper.

  According to the above configuration, data for display driving can be received without contact.

  Therefore, compared with the case where the terminal is provided on the nail decoration sheet and the data reception is performed by contact, the structurally weak portion such as the electrode can be eliminated, and the airtightness can be improved. In addition, since data can be transmitted at an arbitrary timing within the communicable range, the convenience for updating the display can be improved.

  Furthermore, in the nail decoration sheet of the present invention, transmission of data for display to the display drive means is performed by a smartphone or a tablet terminal.

  According to the above configuration, in the smartphone or the tablet terminal, it is easy to select (extract) and edit a desired image or character. In addition, in the smart phone or the tablet terminal, the data of the favorite image or character can be easily transferred.

  Therefore, in the nail decoration sheet used as an artificial nail, a favorite image or character can be easily displayed.

  In the nail decoration sheet according to the present invention, the data transmitted from the smartphone by the NFC is data of an electronic mail received by the smartphone.

  According to the above configuration, the e-mail can be read by the nail, and the interest can be improved.

  The nail decoration sheet according to the present invention is a nail decoration sheet used as an artificial nail as described above, in which electronic paper can be used to display any image or character by using the electronic paper, the electronic paper is driven to display The battery for supplying electric power is disposed on the back side of the portion extended from the user's toe, or in the raised decorative portion formed on the nail meniscus on the proximal side of the user's nail.

  Therefore, the capacity of the battery can be increased without a sense of incongruity by the user, and frame-by-frame advance images, moving images in a short time, or full-color images can be updated and displayed.

It is a figure for demonstrating the usage method of the nail | claw decoration sheet which concerns on one Embodiment of this invention. It is a top view which expands and shows near the said nail decoration sheet from a user's finger. It is a longitudinal cross-sectional view which expands and shows the said nail | claw decoration sheet vicinity from a user's finger. It is a figure which shows the example of the frame advance image displayed on the said nail decoration sheet. It is a disassembled perspective view which shows the structure of the nail | claw decorative sheet based on the further another form of implementation of this invention. It is a longitudinal cross-sectional view which shows the structure of the nail | claw decoration sheet which concerns on the further another form of implementation of this invention. It is a figure for demonstrating the usage method of the nail | claw decoration sheet which concerns on the further another form of implementation of this invention.

Embodiment 1
FIG. 1 is a view for explaining how to use the nail decoration sheet 1 according to the embodiment of the present invention. In the example of FIG. 1, the nail decoration sheet 1 according to the embodiment is attached only to the forefinger 22 among the five fingers 21 to 25 of the user's hand 2 as artificial nails, and the remaining fingers 21 and 23 to 25 Shows an example in which old nail decorative sheets 31, 33 to 35 on which only images and characters are printed are attached. However, the nail decorative sheet 1 according to the embodiment may be attached to a plurality of fingers 21 to 25. Among the five fingers 21 to 25, which finger to use the nail decoration sheet 1 according to the embodiment depends on the cost and the design (for example, when it is used for all of the five fingers 21 to 25) It may be considered in consideration of, etc.). As described later, the nail decoration sheet 1 operates in cooperation with a so-called smartphone 4 and a tablet terminal (not shown).

  2 and 3 are a plan view and a longitudinal sectional view showing the vicinity of the nail decoration sheet 1 in an enlarged manner from the user's forefinger 22. FIG. As shown in FIG. 2, the nail decoration sheet 1 includes an artificial nail body 11, electronic paper 12 provided on the surface of the artificial nail body 11, and decorative portions 13 to 15. The electronic paper 12 is disposed on the nail plate on the tip end side from the center of the user's nail 221, and on the nail half moon on the proximal side of the nail 221, a plurality of arcs (see FIG. In the case of No. 2, three decorative parts 13 to 15 are arranged.

  The electronic paper 12 is for the index finger 22, and for example, the width W of the display screen 121 is 7 mm, and the length L is 10 mm. Row electrodes and column electrodes are formed on at least two sides outside the display screen 121, and those electrodes are illustrated as being folded inside the artificial nail body 11 or being put on the electronic paper 12 It is covered with the design of a protective sheet, etc. and can not be seen from the surface side.

  The electronic paper 12 can use an electrophoresis method as a typical display technology. In this method, white and black are displayed by moving white and black particles by an electric field in microcapsules containing a fluid, and this method is also called particle movement type. Various display methods of the electronic paper 12 can be used, but the contrast is high, no power is required for maintaining the display, and rewriting of the display can be performed with a small amount of power, so the electrophoresis method is used. Is preferred.

  As shown in FIG. 3, the decorative portion 14 is a dummy gem, and is formed of a raised outer shell 141 realized by a dome of glass and the like, and is formed by vapor deposition etc. inside thereof, and reflects light from the outer shell 141 And a reflective layer 142. The same applies to the other decorative parts 13 and 15. That is, the decorative portions 13 to 15 can be realized by covering a glass ball coated on the inner side. Then, for example, a substrate 145 on which the main control circuit 143 and the memory 144 are mounted is housed in the internal space of the dome of the decorative portion 14, and a coil for generating an excitation electromotive force by NFC is housed in the decorative portion 13. A communication circuit based on NFC is accommodated in the decoration portion 15.

  In NFC, the coil corresponds to, for example, ISO / IEC 14443, which is also used for electronic settlement with an IC card or a mobile phone, and a distance of up to a dozen centimeters using a frequency of 13.56 MHz. Thus, a power receiving unit capable of receiving power is configured. On the other hand, the communication circuit is for communicating with the smartphone 4 by Bluetooth (registered trademark) of 2.4 GHz or a wireless LAN, for example, using electromotive force of the coil. In addition, since the frequency of NFC such as the above-mentioned 13.56 MHz receives management of the Radio Law, if excitation power can be transmitted at a frequency outside the jurisdiction of the Radio Law, complicated procedures are eliminated and transmission power is increased to shorten Power can be transmitted in time, which is preferable.

  Thus, in the nail decoration sheet used as an artificial nail, in order to be able to display arbitrary images and characters using the electronic paper 12 on the surface, the nail decoration sheet 1 of this embodiment should be noted The artificial nail main body 11 is formed extending from the toe 222 of the user, and the battery 16 supplying power for displaying and driving the electronic paper 12 is disposed on the back side 112 of the portion 111 which is extended from the toe 222 It is being done.

  This utilizes the fact that the artificial nails used for decorative applications are often formed to be longer (larger) than the length of the user's nails 221 for better viewing. Normally, both sides of the claw 221 are curled, and due to the curl, a dome-like space 113 exists in the back side 112 of the portion 111 which is extended from the claw 221, and the space 113 is , And the battery 16 can be embedded without a sense of discomfort.

  The battery 16 and the electronic paper 12 are connected to the substrate 145 by the wires 171 and 172. Thus, the image data and character data stored in the memory 144 are read by the main control circuit 14 and displayed on the electronic paper 12 by the power of the battery 16. As the battery 16, a flexible organic radical battery having a relatively large capacity per volume can be used.

  Therefore, even if any image or character is displayed, conventionally, it is difficult to display only still images using nonvolatile electronic paper in terms of power consumption, the nail decoration sheet of this embodiment In No. 1, since the capacity of the battery 16 embedded in the space 113 can be relatively large, frame-by-frame images for update display at appropriate timings, moving images for a short time, or full-color image update display can be performed. become able to. In addition, since the power consumption can be increased, the possibility of using a self-emitting device such as an organic EL element can be opened to the electronic paper, in which case visual recognition in a dark place becomes possible. In this manner, by using the electronic paper 12, the nail decoration sheet 1 capable of displaying an arbitrary image or character can be entertained or more beautiful.

  Specifically, the operating voltage of the electronic paper 12 is 1.65 to 3.6 V, preferably 1.65 V. On the other hand, the operating voltage of the driver of the electronic paper 12 which is the main control circuit 143 is 2.6 to 2.7 V, the operating current value is 40 mA at maximum, is close to 0 at sleep, and is about 0.05 mA. . Therefore, if the capacity of the battery 16 is at least 3 V and 10 mAh, two organic radical batteries are used in series, and if images are replaced once per hour or information is displayed once, it is 15 It is possible to operate for a time, and in animation, it is possible to display continuously for about ten minutes.

  Such a capacity can be realized with the battery 16 embedded in the space 113 of the toe 222. For example, the length of the portion 111 extending from the toe 222 may be 7 to 8 mm, and may exceed 1 cm in the case of the thumb 21 unobtrusive (outside) when grasping the hand 2. A battery 16 of the above capacity can be accommodated. Particularly in the case of a long and wide thumb 21, a large capacity battery can be accommodated.

  Here, under the present circumstances, since the operating voltage of the electronic paper 12 is lower than the operating voltage of the driver, when the voltage becomes low, the driver stops earlier. Therefore, when an electronic paper without a driver appears, the operation time can be further extended.

  FIG. 4 shows an example of the frame advance image. FIG. 4 (a) is a plan view of the nail decoration sheet 1, and FIGS. 4 (b) to 4 (f) are views showing a frame-by-frame image displayed on the electronic paper 12 in an enlarged manner. The example in FIG. 4 shows that four leaf clover blooms, and after the stem 181 shown in a heart shape extends from FIG. 4 (b) to FIG. 4 (c), FIG. As shown in (d) to (e) of FIG. 4, the flower 182 blooms, and as shown in (f) of FIG.

  Furthermore, in the nail decoration sheet 1 according to the present embodiment, as shown in FIG. 3, the battery 16 is disposed from the inner portion by a predetermined length D1 from the tip 114 of the artificial nail main body 11 to the user's fingertip 223 Ru. The length D1 is, for example, 1 mm. Therefore, when the user holds the pen or holds the fist, the toe (tip 114) contacts before the battery 16 comes in contact with the palm of the hand, so that the sense of discomfort given to the user can be suppressed.

  Further, in the nail decoration sheet 1 of the present embodiment, as shown in FIG. 3, the battery 16 is also extended from the position separated by the predetermined distance D 2 from the user's fingertip 223 to the tip 114 side of the artificial nail 11 Be placed. The distance D2 is, for example, 1 mm. Therefore, when the user places a hand on a desk, for example, and the fingertip 223 is pressed and spreads flatly as shown by the virtual line 224 in FIG. 2, the battery 16 contacts the fingertip 223. It is possible to suppress the discomfort given to the user. In the state shown in FIG. 3, the gap D3 is secured between the battery and the battery 16 even when the fingertip 223 is expanded.

  Here, even in the same NFC, it is the 13.56 MHz frequency used in an IC card, a wireless tag or the like that is used to receive power by a coil. Thus, the power received by the coil can be used to charge the battery 16 by using the power for excitation of the IC card or the wireless tag, and the coil functions as a power receiving unit. Thus, the power supply for charging can be supplied in a non-contact manner, and as compared with the case where the electrodes are provided to perform the contact power feeding, the structurally weak portions such as the electrodes can be eliminated and the airtightness can be improved. The degree of freedom (moving range) of the user's finger 22 during charging can be increased.

  On the other hand, communication with the smartphone 4 or the like is also performed contactlessly using the 2.4 GHz frequency band or the like. Therefore, compared with the case where a terminal is provided and data reception is performed by contact, a portion which is structurally weak such as an electrode can be eliminated, and airtightness can be improved. In addition, since data can be transmitted at an arbitrary timing within the communicable range, the convenience for updating the display can be improved.

  Furthermore, in the nail decoration sheet 1 according to the present embodiment, data for display as shown in FIG. 4 is transmitted from the smartphone 4 or a tablet terminal. In the smartphone 4 or the tablet terminal, it is easy to select (extract, download) and edit a desired image or character. Moreover, in the smart phone 4 or the tablet terminal, data of the favorite image or character can be easily transferred to the nail decoration sheet 1. Thus, by using the smartphone 4 or the tablet terminal, it is possible to easily display a desired image or character on the nail decoration sheet 1 used as an artificial nail.

Further, since the display data transmission source is the smartphone 4 or the tablet terminal, the display data to be transmitted is the data of the e-mail received by the smartphone 4 or the tablet terminal. It can be read and can improve the interest.
Second Embodiment
Hereinafter, a nail decoration sheet according to another embodiment of the present invention will be described. The main configuration is the same as that of the nail decoration sheet 1 of FIGS. 1 to 4. The artificial nail main body 11 is made of shape memory gel or synthetic resin, and the electronic paper 12 is mounted on the upper surface thereof, and the entire structure is covered with a waterproof transparent film or the outer peripheral portion is waterproofed. By embedding an NFC coil in the outer peripheral portion of the artificial nail main body 11, in particular, the coil diameter is increased, the coil length is increased, and the amount of power that can be received can be increased.

  Then, the coil of NFC can be eliminated from the inside of the decorative portion 13, and although the capacity is somewhat smaller than that of the battery 16 of the toe 222, the battery can be accommodated in the dome of the decorative portion 13. . In that case, the electronic paper 12 displays a moving image, a full color image, or extends the display time for the battery 16 in the decorative portion 13 to be used for the expansion (capacity increase) of the battery 16. It is also good.

However, the battery 16 in the decorative portion 13 may be replaced with the battery 16, that is, the battery 16 of the toe 222 may be eliminated. In that case, in the artificial nail main body 11, the part 111 extended from the toe 222 can be shortened.
Third Embodiment
5 and 6 are an exploded perspective view and a longitudinal sectional view showing the structure of a nail decoration sheet 1a according to still another embodiment of the present invention. The nail decoration sheet 1a is similar to the nail decoration sheet 1 described above, and the corresponding portions are denoted by the same reference numerals, and the description thereof is omitted. It should be noted that in the nail decoration sheet 1a, the substrate 145, the coil of the NFC, etc. are formed in a sheet shape and laminated. In the example of FIG. 5 and FIG. 6, the insulating heat insulation sheet 18, the substrate and the printed antenna layer 19, the electronic paper 12a and the protective sheet 20 are laminated in this order on the artificial nail body 11a attached to the nail 221 .

  The insulating and heat insulating sheet 18 is provided to prevent leakage and heat transfer from the side of the substrate and the printed antenna layer 19 to the side of the finger 22 of the user, depending on the material and thickness of the artificial nail main body 11a. If the effect can be expected, the insulation and insulation sheet 18 may not be provided. In the insulating and heat insulating sheet 18, on the side of the toe 222 corresponding to the mounting position of the battery 16a, a through hole 181 for electrically connecting the battery 16a to the substrate and the print antenna layer 19 is formed. .

  In the substrate and the print antenna layer 19, bare chips such as the main control circuit 143, the memory 144, and the NFC communication circuit described above are mounted on, for example, a flexible substrate substantially at the central portion side. Formed and configured. The substrate and the print antenna layer 19 and the electronic paper 12a are connected to each other by the flexible substrate 173 on the proximal end side of the claw 221, that is, on the surface of the claw half. A protective sheet 20 is placed on the electronic paper 12a. The protective sheet 20 is formed so as to be transparent in the region of the display screen 121, and is formed so as to shield the peripheral portion so as to hide the row electrodes and column electrodes. Designs may be given as appropriate.

  By configuring in this manner, although the thickness of the nail decoration sheet 1a becomes thicker than that of the nail decoration sheet 1, it is possible to eliminate the need for the decoration portions 13 to 15 that camouflage the substrate 145 and the coil. In addition, with this nail decoration sheet 1a, the coil diameter of NFC can be increased, and the communication distance with the smartphone 4 can be extended. The nail decoration sheet 1a of this laminated structure and the nail decoration sheet 1 provided with the decorative parts 13 to 15 may be appropriately selected according to the design and the like.

  Further, it should be noted in the nail decoration sheet 1a that the battery 16a is configured to be detachable from the artificial nail main body 11a. In FIG. 6, the battery 16a portion is enlarged and shown in the lower left region. A bracket 16b is provided on the artificial nail main body 11a in order to make the battery 16a removable. Then, on the battery 16a side and the bracket 16b side, connector portions 16c and 16d to be fitted to each other are respectively provided. In the example of FIG. 6, the connector portion 16c on the battery 16a side is made of a pair of + and-pins, and the connector portion 16d on the bracket 16b side is made of a corresponding pair of holes. The connector portion 16 d is electrically connected to the substrate and the print antenna layer 19 through the through hole 181.

  Then, for example, in FIG. 7, the battery 16a removed from the artificial nail main body 11a as indicated by the reference symbol F1 is attached to the separately provided charger 5 as indicated by the reference symbol F2, and from the connector portion 16c Be charged. The charger 21 is connected to a power supply destination by a so-called USB cable or the like as shown in FIG. 7, and supplies power from the power supply destination to the battery 16a with a charging voltage of 3 V and a charging current of 60 mA. Do. Under the above conditions, the time to full charge is 10 minutes.

  Thus, the battery 16a is removed from the claw body 11a, and charging is performed by contact charging through the connector portions 16d and 16c by the separately provided charger 5, whereby the charging time can be shortened by rapid charging. The convenience can be improved without the need for restraint such as bringing the user's fingertip into contact with the electrode.

  Further, in the nail decoration sheet 1a according to the present embodiment, the connector portion 16d on the side of the artificial nail main body 11a is provided with a reset switch for detecting that the battery 16a is attached. In the example of FIG. 6, another pin 16e is erected between the pair of pins in the connector portion 16c of the battery 16a, and another hole 16f is formed between the pair of holes in the connector portion 16d of the bracket 16b. And they constitute the reset switch. Specifically, for example, the pin 16e is connected in parallel with the pin of the connector portion 16c +, the hole 16f is connected to the reset terminal of the main control circuit 143, and the pin 16e is fitted in the hole 16f. The voltage of 3 V is supplied to the main control circuit 143 which is a display drive unit for driving to display the electronic paper 12a, the main control circuit 143 is reset, and the attachment of the battery 16a is detected.

  This is because if the battery 16a is removed, depending on the case, the main control circuit 143 may erase display data such as the image or characters, or may cause an error in the system. is there. Therefore, the display can be promptly recovered by performing the reset as described above. Rereading of the image data accompanying the reset can be easily performed from the smartphone 4.

  The fitting of the battery 16a to the bracket 16b may be performed by using the fitting between the pin of the connector portion 16c and the hole of the connector portion 16d, but another method such as magnetic attraction or providing a hook may be used. Alternatively, additional engagement means may be provided. In addition, a dedicated jig or tool such as tweezers may be used for removing the battery 16a from the bracket 16b, attaching the battery 16a, or the like.

1, 1a nail decoration sheet 11, 11a artificial nail main body 111 part 112 back side 113 dome (squashed) space 12 electronic paper 121 display screen 13-15 decoration part 141 outer shell 142 reflection layer 143 main control circuit 144 memory 145 substrate 16 , 16a battery 16b bracket 16c, 16d connector portion 16e pin 16f hole 171, 172 wiring 18 insulation heat insulating sheet 181 through hole 19 print antenna layer 20 protective sheet 2 user's hand 21-25 finger 221 user's nail 222 toe 31, 33 to 35 nail decoration sheet 4 smartphone 5 charger

Claims (8)

A nail decoration sheet comprising: an artificial nail body attached to the nail of a user; and electronic paper provided on the surface of the artificial nail body, wherein an electronic paper is adapted to display an arbitrary image or character.
The electronic paper is placed on the nail plate from the center to the tip of the nail of the user,
On the nail half moon of the proximal side of the user's nail in the artificial nail body, one or more raised decorative parts are provided,
A nail decoration sheet, wherein a first battery for supplying power for driving display of the electronic paper is disposed in the decoration section. The artificial nail body is formed extending from the toe of the user, and a second battery for supplying power for displaying and driving the electronic paper is further disposed on the back side of the portion extended from the toe. The nail decoration sheet according to claim 1, characterized in that: 3. The nail decoration sheet according to claim 2, wherein the second battery is disposed from a portion inside a predetermined length from a tip end of the artificial nail body to a fingertip of the user. The nail decoration sheet according to claim 3, wherein the second battery is arranged from the position separated by a predetermined distance from the user's fingertip to the tip side of the artificial nail body. The nail decoration sheet according to any one of claims 1 to 4, further comprising power reception means for supplying power received by NFC to the first battery for charging.   The nail decoration sheet according to any one of claims 1 to 5, wherein display driving means for driving display of the electronic paper causes the data received by NFC to be displayed on the electronic paper.   The nail decoration sheet according to claim 6, wherein transmission of data for display to the display driving means is performed by a smartphone or a tablet terminal.   The nail decoration sheet according to claim 7, wherein the data transmitted from the smartphone by the NFC is data of an electronic mail received by the smartphone.