Patent Publication Number: US-2022218061-A1

Title: Self-customized microled wig

Description:
TECHNICAL FIELD 
     The present invention relates to a self-customized microLED wig, and more specifically, to a technique capable of expressing a single color or a variety of colors of a hair unit of a normal wig according to a situation by coating a transparent microLED display skin that can selectively express a color and a design on the outer surface of the hair unit. 
     BACKGROUND ART 
     Although wigs serve to protect the scalp from sunlight, they are also used to show off the appearance or boast social status in many cases. History of wigs goes back to around 5000 to 6000 BC, and images of women wearing a wig may be frequently found on murals and stone statues in Chile and Egypt, and history of wigs in Korean is very long dating back to the period of Three Kingdoms. That is, the most ultimate purpose of the wigs is to be used to hide hair loss caused by congenital or acquired factors, and recently, in addition to using the wigs to hide hair loss, the utility as a fashion item has been sufficiently recognized through the Internet or broadcasting. Currently, the wigs have become an accessory used when a person desires to feel better mood or change an image once in a while, and they are widely used even when a user uses a wig for a relatively short period of time to produce various hairstyles. 
     For example, wigs of various colors are often used as props for successful performances in a ceremony, festival, party, or event on a street, and when a wig may emit light to change colors variously for this event purpose, it may have an effect of being more interesting and attentive in the dark. 
     Meanwhile, although a wig may emit light by coating a photoluminescent agent or the like on the hair of the wig, there is a problem in that as only light of one color is emitted with low brightness, the wig looks dark at night and is difficult to identify during the daytime. 
     In addition, as the light emitting effect of the photoluminescent agent is not continued and the wig may be used only for a short period of time, it is troublesome to purchase many wigs, and the economic efficiency is extremely low. 
     First, conventional techniques are described below. 
     Korean Patent Registration No. 10-1279558 discloses a technique related to a light emitting wig using fiber optic yarn, which is configured of a support that is worn on the head and a plurality of extension hairs planted on the support, and the wig comprises: a PCB attached to the support and equipped with a plurality of light sources; a battery for supplying power to the PCB; a switch for controlling turning on or off of the light sources; and a plurality of fiber optic yarn hairs planted to contact with the light sources of the PCB at one end to transfer light, wherein the PCB is stored in a case, a planting unit is formed on the top of the case, and the plurality of optical fiber yarn hairs is planted in the planting unit. 
     The conventional technique mentioned above mainly describes a technique of radiating a light source to optical fiber yarn so that light is radiated to the hair. However, the technical configurations have a problem in that it is difficult to use for an extended period of time due to the large battery consumption, and there is no choice but to create a somewhat artificial atmosphere by using fiber optic hairs instead of conventional hairs. 
     DISCLOSURE OF INVENTION 
     Technical Problem 
     Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a self-customized microLED wig basically comprising, like the configuration of conventional wigs, a base plate to be worn on the head of a user, and a plurality of hair units configured on the top of the base plate. As a transparent microLED display skin is configured to be coated on the outer surface of the hair units, and a master unit for selectively controlling the transparent microLED display skin and a remote slave spaced apart from the master unit by a predetermined distance and wirelessly communicating with the master unit are configured inside the base plate, the transparent microLED display skin may express a single color or a variety of colors. 
     Technical Solution 
     To accomplish the above object, according to one aspect of the present invention, there is provided a self-customized microLED wig capable of emitting light, the wig comprising: a base plate  100  worn and fixed on a person&#39;s head; a plurality of hair units  200  configured on the top of the base plate  100  to be spaced apart from each other at regular intervals; a transparent microLED display skin  300  configured to include a transparent flexible substrate  310  having transparency and flexibility, and a semiconductor device layer  320  having microLED pixels  330  transferred and attached on the transparent flexible substrate  310 , and fully or partly coated on the surface of the hair unit  200 ; a master unit  400  configured on the base plate  100  and provided with a power switch  410  for controlling a power supply unit  430 , a charging port  420  for charging a battery through a USB cable, the power supply unit  430  controlled by the power switch  410 , the battery  440  for storing power charged through the charging port  420 , a wireless power supply unit  450  having a wireless electric coil to wirelessly supply power to the power supply unit  430 , a short-range wireless communication unit  460  for performing short-range wireless communication with external devices and other devices including a smartphone  600 , a main control unit  470  for controlling color expression in the transparent microLED display skin  300  of the hair unit  200 , an energy harvesting unit  480  for self-generation of energy, and a photodetector  490  for detecting brightness of light outside the wig; a remote slave  500  configured at a position spaced apart from the master unit  400  of the base plate  100  by a predetermined distance, and provided with a wireless electric antenna  510  for receiving power generated by the wireless power supply unit  450 , a remote control unit  520  for driving and controlling the transparent microLED display skin  300 , a transceiver unit  530  for performing close proximity remote transmission and reception with the master unit  400 , an energy harvesting unit  540  for self-generation of energy, and a photodetector  550  for detecting brightness of light outside the wig; and the smartphone  600  including an APP capable of controlling the main control unit  470  or the remote control unit  520  of the master unit  400  or the remote slave  500  through a short-range wireless communication method with the short-range wireless communication unit  460  of the master unit  400 . 
     The photodetectors  490  and  550  detect an amount of external light applied to the wig, and then apply them to the main control unit  470  and the remote control unit  520 , and the main control unit  470  and the remote control unit  520  control display luminance brightness of the transparent microLED display skin  300  based on the received amount of light. 
     The energy harvesting units  480  and  540  are configured of any one or a combination of a photoelectric element, a thermoelectric element, a piezoelectric element, and a wireless electric conversion element. 
     When a specific transparent microLED display skin  300  is controlled through the APP, the transparent microLED display skin  300  is controlled by the master unit  400  or the remote slave  500  close to the specific transparent microLED display skin  300 . 
     Advantageous Effects 
     According to the self-customized microLED wig of the present invention, since it is possible to immediately respond to a situation in the field as various colors and glittering particles may be fully or partly changed with ease in accordance with decorations for self-expression or the current situation of a user in a ceremony, festival, party, or event, while maintaining the original purpose of wigs used recently, this is a useful invention that can enhance the fun and satisfaction of users and have an effect of using for an extended period of time owing to low power consumption, rechargeable battery, and autonomous power supply. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a front cross-sectional view and an enlarged view showing a preferred embodiment of the present invention. 
         FIG. 2  is an exploded view and an enlarged view showing a preferred embodiment of the present invention. 
         FIG. 3  is a plan view showing a preferred embodiment of the present invention. 
         FIG. 4  is a view showing a transparent microLED display skin of the present invention. 
         FIG. 5  is a block diagram showing a preferred embodiment of a master unit of the present invention. 
         FIG. 6  is a block diagram showing a preferred embodiment of a remote slave of the present invention. 
         FIG. 7  is a view showing that a smart phone and a wig of the present invention operate in a short-range wireless communication method. 
         FIG. 8  is a view showing another embodiment of the present invention. 
     
    
    
       
     
       
         
           
               
             
               
                   
               
               
                 DESCRIPTION OF SYMBOLS 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 100: base plate 
               
               
                   
                 110: insertion hole 
               
               
                   
                 120: motor 
               
               
                   
                 200: hair unit 
               
               
                   
                 210: insertion unit 
               
               
                   
                 300: transparent microLED display skin 
               
               
                   
                 310: transparent flexible substrate 
               
               
                   
                 320: semiconductor device layer 
               
               
                   
                 330: microLED pixel 
               
               
                   
                 331: positive electrode layer 
               
               
                   
                 332: transparent conductive layer 
               
               
                   
                 333: transparent p-electrode layer 
               
               
                   
                 334: p-GaN layer 
               
               
                   
                 335: active layer 
               
               
                   
                 336: n-Gan layer 
               
               
                   
                 337: transparent n-electrode layer 
               
               
                   
                 338: transparent insulating layer 
               
               
                   
                 400: master unit 
               
               
                   
                 410: power switch 
               
               
                   
                 420: charging port 
               
               
                   
                 430: power unit 
               
               
                   
                 440: battery 
               
               
                   
                 450: wireless power supply unit 
               
               
                   
                 460: short-range wireless communication unit 
               
               
                   
                 470: main control unit 
               
               
                   
                 480: energy harvesting unit 
               
               
                   
                 490: light detection unit 
               
               
                   
                 500: remote slave 
               
               
                   
                 510: wireless electric antenna 
               
               
                   
                 520: remote control unit 
               
               
                   
                 530: transceiver unit 
               
               
                   
                 540: energy harvesting unit 
               
               
                   
                 550: light detection unit 
               
               
                   
                 600: smartphone 
               
               
                   
                   
               
            
           
         
       
     
     BEST MODE FOR CARRYING OUT THE INVENTION 
     Although people expressed their individuality through hair dyeing in the past, in the case of hair dyeing, the dyed hair color of one color or multiple colors should be maintained as is until next dyeing, and the unique color of the hair is added as the hair grows, and in addition, when dyeing is continued, there are many problems from the aspect of hair damage, money, and time. 
     Therefore, in the present invention, since a wig wearer may act as a hair designer to instantaneously change the color of all or part of the hair with ease and to make the wig radiate light and generate various effects such as glittering or the like according to the environment or mood, a self-customized microLED wig which can express a single color or a variety of colors and glittering of a hair unit according to a situation may be provided by coating a transparent microLED display skin that can selectively express a color and a design on the outer surface of the hair unit of the wig as a concept of a final hair fashion of wig. 
     Hereinafter, a preferred embodiment of the present invention for achieving the above objects in relation to the accompanying drawings will be described with reference to  FIGS. 1 to 8 . 
     First, the present invention provides a self-customized microLED gig comprising: a base plate  100  worn on the head of a wearer, a hair unit  200  configured on the base plate  100 , a transparent microLED display skin  300  fully or partly coated on the surface of the hair unit  200 , a master unit  400  and a remote slave  500  configured on the base plate  100 , and a smartphone  600  for selectively controlling the master unit  400  and the remote slave  500 . 
     The base plate  100  is a component that is worn and fixed around a person&#39;s head as shown in  FIGS. 1 to 3 , and formed of a variety of soft materials comfortable to wear, and the upper plate is formed of a relatively hard material, where a plurality of insertion holes  110  for selectively inserting and separating hair units  200  is formed to be spaced apart from each other at regular intervals. 
     The insertion holes  110  may be formed in various shapes. 
     The hair unit  200  is a hair unit used in a general wig as shown in  FIGS. 1 to 3 , and an insertion unit  210  inserted into the insertion hole  110  is formed on the bottom. At this point, normally, the overall color of the hair unit  200  may be black or may be expressed in a transparent color. Since only the hair units  200  that cannot operate due to damage may be replaced through the insertion and separation structure of the hair unit  200 , economic efficiency can be increased. 
     Here, although a driving motor  120  is configured in a portion adjacent to the insertion hole  110  of the base plate  100  and a separate fixing member is connected to an end of the driving motor  120  as shown in  FIG. 8 , the hair unit  200  is configured to rotate through the operation of the driving motor by fixing the insertion unit  210  of the hair unit  200  to an end of the driving motor. 
     When the transparent microLED display skin  300 , the master part  400 , the remote slave  500 , and the smartphone  600  described below are configured and used, the hair unit  200  may rotate while light of a color is emitted, and therefore, there is an effect of enhancing the fun in using the wig. 
     Meanwhile, as shown in  FIG. 4 , the transparent microLED display skin  300  is configured of a transparent flexible substrate  310  having transparency and flexibility, and a semiconductor device layer  320  having microLED pixels  330  transferred and attached on the transparent flexible substrate  310 , to be fully or partly coated on the surface of the hair unit  200 . 
     That is, since the hair unit  200  coated with the transparent microLED display skin  300  may be independently and easily separated, hair units  200  of various shapes and sizes may be used, and normal hair units not coated with the transparent microLED display skin  300  may also be used. 
     The microLED display is a display in which microLED particles with a size of 5 to 100 μm ( 1/100,000 Cm) are connected one after another on a substrate (a transparent substrate in the present invention), and it is suitable for implementing a flexible or rollable screen by using an LED chip itself as a pixel, may be used for a long time as power consumption is very small compared to an OLED, and is much excellent from the aspect of illuminance, saturation, and power efficiency compared to existing OLEDs. 
     The transparent microLED display skin  300  as described above is attached to be coated on the surface of the hair unit  200 , and the transparent microLED display skin  300  uses a transparent flexible substrate  310  having both transparency and flexibility to function as the hair unit  200  as is even when the microLED display does not work, and the pixels made of microLED chips, i.e., the microLED pixels  330 , are also configured to maximize the transparency. 
     On the other hand, the transparent microLED display skin  300  of the present invention is configured by implanting a semiconductor device layer  320  having numerous microLED pixels  330  made of micro p-n diode layer on the transparent flexible substrate  310  in a micro transfer printing technique, and at this point, in performing the transfer printing technique, it is preferable to transfer and attach 10,000 or more microLED pixels  330  per second on the transparent flexible substrate  310  using a roll transfer technique. 
     The microLED pixels  330  are prepared on a native substrate and then transferred and printed on the transparent flexible substrate  310 , and the native substrate and unnecessary portions are then removed thereafter. 
     The transparent flexible substrate  310  has transparency and flexibility and is selected in a thickness range among 5 to 10 μm, 10 to 50 μm, 50 to 100 μm, 100 to 200 μm, 200 to 500 μm, 0.5 to 1 mm, 1 to 5 mm, and 5 to 10 mm. 
     That is, as shown in  FIG. 4 , the transparent microLED display skin  300  is a configuration in which the semiconductor device layer  320  having microLED pixels  330  is formed to be attached on the transparent flexible substrate  310  having both transparency and flexibility. 
     The microLED pixel  330  of the semiconductor device layer  320  is configured of a positive electrode layer  331 , a transparent conductive layer  332 , a transparent p-electrode layer  333 , a p-GaN layer  334 , an active layer  335 , an n-GaN layer  336 , and an upper transparent n-electrode layer  337 , and a transparent insulating layer  338  is formed between the microLED pixels  330 . Each of the microLED pixels  330  formed in the semiconductor device layer  320  is a p-n diode layer, which is configured of a compound semiconductor having a band gap corresponding to a specific region in the spectrum, and for example, it is formed of gallium nitride (GaN), which is a III to V nitride material. 
     The transparent p-electrode layer  333  is a layer for supplying power, and forms an electrode with an oxide containing Al, Ga, Ag, Sn, In, Zn, Co, Ni, or Au having a transmittance of 70% or more. The positive electrode layer  331  becomes a circuit pattern, a bump, or a conductive adhesive layer, and the transparent n-electrode layer  337  has electrical conductivity. The positive electrode layer  331  may be selected from a group of silver and nickel having reflectivity to the visible spectrum, and forms a latent reflective mirror layer. 
     In addition, the present invention may implement the microLED display skin  300  in full color by arranging three elements, i.e., microLED panels, having red (R), green (G) and blue (B) colors. 
     In other words, in the present invention, when the transparent microLED display skin  300  of the hair unit  200  does not operate, the color and design of a general hair unit are expressed, and when the transparent microLED display skin  300  operates, various colors may be output to the outside. 
     Here, when a specific transparent microLED display skin  300  is controlled through the APP, the transparent microLED display skin  300  is controlled by the master unit  400  or the remote slave  500  close to the specific transparent microLED display skin  300 . 
     In addition, the transparent microLED display skin  300  is configured to be fully or partly coated on the outer surface of the hair unit  200 , and may express various colors on the hair unit  200  under the control of the smartphone  600  described below. 
     Meanwhile, the master unit  400  is configured on the base plate  100  as shown in  FIG. 5 , and is configured of a power switch  410  for controlling a power supply unit  430 , a charging port  420  for charging a battery through a USB cable, the power supply unit  430  controlled by the power switch  410 , the battery  440  for storing power charged through the charging port  420 , a wireless power supply unit  450  having a wireless electric coil to wirelessly supply power to the power supply unit  430 , a short-range wireless communication unit  460  for performing short-range wireless communication with external devices and other devices including a smartphone  600 , a main control unit  470  for controlling color expression in the transparent microLED display skin  300  of the hair unit  200 , an energy harvesting unit  480  for self-generation of energy, and a photodetector  490  for detecting brightness of light outside the wig. 
     It is preferable that the IC chip of the main control unit  470  embedded in the base plate  100  is implemented as an application specific integrated circuit (ASIC), and wireless electricity and the energy harvesting unit  480  is able to supply energy by applying a solar cell (photovoltaic cell). 
     On the other hand, as shown in  FIG. 6 , the remote slave  500  for wirelessly receiving power supplied from the master unit  400  configured in the base plate  100  is configured at a position spaced apart from the master unit  400  of the base plate  100  by a predetermined distance, and includes a wireless electric antenna  510  for receiving power generated by the wireless power supply unit  450 , a remote control unit  520  formed in an IC chip for driving and controlling the transparent microLED display skin  300 , a transceiver unit  530  for performing close proximity remote transmission and reception with the master unit  400 , an energy harvesting unit  540  for self-generation of energy, and a photodetector  550  for detecting brightness of light outside the wig. 
     The integrated circuit (IC) of the remote control unit  520  may configure a micron-scale integrated circuit using a complementary-metal-oxide semiconductor (CMOS), and the area of the IC chip is 1 mm×1 mm, and the thickness is preferably 0.5 mm. 
     Meanwhile, power generated through the resonance phenomenon in the wireless electric coil of the wireless power supply unit  450  configured on the base plate  100  of the wig of the present invention is received by the wireless electric antenna  510  of the remote slave  500 , and the power received under the control of the remote controller  520  is used to drive the transparent microLED display skin  300 . 
     Here, the energy harvesting units  480  and  540  are means for harvesting energy in the surroundings and may generate power without receiving power from a separate battery and supply the power to each part inside, and are preferably configured of any one or a combination of a photoelectric element, a thermoelectric element, a piezoelectric element, and a wireless electric conversion element. The photodetectors  490  and  550  detect the amount of external light applied to the wig, and then apply them to the main control unit  470  and the remote control unit  520 , and the main control unit  470  and the remote control unit  520  may control the display luminance brightness of the transparent microLED display skin  300  based on the received amount of light. 
     In addition, as shown in  FIG. 7 , a smartphone  600  is further provided to include an APP capable of controlling the main control unit  470  or the remote control unit  520  of the master unit  400  or the remote slave  500  through a short-range wireless communication method with the short-range wireless communication unit  460  of the master unit  400 . 
     The wireless transmission and reception method between the master unit  400  and the smartphone  600  may use a Li-Fi technology that implements a fast communication speed using the wavelength of light emitted from an LED, and particularly, when the microLED technique of the present invention is applied, the effect of miniaturizing and light-weighting the parts is increased. 
     That is, through the smartphone  600  of the present invention, as shown in  FIG. 7 , change of design and color may be controlled through short-range remote control between the self-customized microLED wig and the smartphone  600 . The master unit  400  may wirelessly connect to the smartphone  600  using a short-range wireless communication method such as Bluetooth communication, Wi-Fi communication, NFC communication, IR communication, or Li-Fi communication. When users selectively control the APP included in the smartphone  600 , various colors may be expressed on the transparent microLED display skin  300  according to a control command. 
     In addition, in operating the transparent microLED display skin  300  using the APP of the smartphone  600  that controls the master unit  400  and the remote slave  500  of the present invention, when a control command is initially transmitted to the master unit  400 , the master unit  400  operates the transparent microLED display skin  300 , and when the distance between the master unit  400  and a specific transparent microLED display skin  300  is long, the master unit  400  transmits the control command to the remote slave  500 , and the remote slave  500  operates the corresponding transparent microLED display skin  300 . 
     That is, when a specific transparent microLED display skin  300  is initially operated using the smartphone  600 , the master unit  400  or the remote slave  500  close to the specific transparent microLED display skin  300  in distance operates the specific transparent microLED display skin  300 , and thus there is an advantage of quickly and accurately controlling the transparent microLED display skin  300 . 
     According to the self-customized microLED wig of the present invention, since it is possible to immediately respond to a situation in the field as various colors may be changed with ease in accordance with the current situation of a user in a ceremony, festival, party, or event, while maintaining the original purpose of wigs used recently, this is a useful invention that can enhance the fun of users by variously changing colors and have an effect of using for an extended period of time owing to low power consumption, rechargeable battery, and autonomous power supply.