Photoinduced hair growing cap

Abstract

The invention provides a photoinduced hair growing cap, and relates to the technical field of wearable equipment. The light-induced hair growth cap comprises a supporting structure layer, a light-emitting structure layer and a light-transmitting protective film which are sequentially arranged in a stacked mode. The orthographic projection of the light-emitting area of the light-emitting structure layer on the supporting structure layer covers the supporting structure layer, the light-emitting structure layer is used for emitting light in a surface light-emitting mode, transmitting the light-transmitting protective film and outputting the light, and the light emitted by the light-emitting structure layer has the function of exciting scalp hair growth. Therefore, the illumination received by the scalp surface of the human body is uniform, the hair growing effect of the scalp surface of the human body is the same, in addition, the temperature of the scalp surface of the human body is also uniform, and the user experience feeling is good.

Description

Technical Field

[0001] The present application relates to the technical field of wearable devices, and in particular to a photoinduced hair growth cap. Background Art

[0002] As the times change, the number of people with hair loss in society is increasing, so the demand for hair growth is also increasing. At present, red light can be emitted by a photo-induced hair growth cap onto the surface of the human scalp. Red light can increase the level of cell metabolism, promote cell growth and repair, and effectively promote hair growth.

[0003] The inner side of the current photo-induced hair growth cap is equipped with multiple array-arranged laser light sources, each of which can emit a beam of light to illuminate the surface of the human scalp. In this way, the surface of the human scalp includes areas irradiated by the laser and areas not irradiated by the laser, resulting in uneven illumination, and thus different hair growth effects in areas irradiated by the laser and areas not irradiated by the laser. In addition, the temperature of the area irradiated by the laser will rise significantly, resulting in uneven temperature on the surface of the human scalp and a poor user experience. Summary of the invention

[0004] The present application provides a photoinduced hair growth cap, which is used to solve the problem in the prior art that the light emitted by the photoinduced hair growth cap is uneven, and the hair growth effect of the area irradiated by the laser is different from that of the area not irradiated by the laser, and the temperature of the area irradiated by the laser is significantly increased, resulting in uneven temperature on the surface of the human scalp and poor user experience.

[0005] The present application provides a photoinduced hair growth cap, comprising:

[0006] A supporting structure layer, configured to form a wearing space for the photoinduced hair growth cap;

[0007] A light-emitting structure layer is stacked on a side of the supporting structure layer close to the wearing space, and the orthographic projection of the light-emitting area of ​​the light-emitting structure layer on the supporting structure layer covers the supporting structure layer;

[0008] The light-transmitting protective film is stacked on the side of the light-emitting structure layer away from the supporting structure layer. The shapes of the light-emitting structure layer and the light-transmitting protective film match the shape of the supporting structure layer. The light-emitting structure layer is used to emit light in the form of surface light through the light-transmitting protective film and output it, and the light emitted by the light-emitting structure layer has the function of stimulating hair growth on the scalp.

[0009] In a possible implementation, the photoinduced hair growth cap further includes a filter film, which is stacked between the light emitting structure layer and the light-transmitting protective film, and is used to filter out light with a wavelength below 600 nm from the light emitted by the light emitting structure layer.

[0010] In a possible implementation, the filter film is a polyethylene terephthalate film or a triacetate cellulose film.

[0011] In a possible implementation, the filter film is bonded to the light-emitting structure layer through a first bonding layer, and the filter film is bonded to the light-transmitting protective film through a second bonding layer.

[0012] In a possible implementation manner, the light emitted by the light emitting structure layer includes light with a peak wavelength between 600 nm and 700 nm.

[0013] In a possible implementation, the support structure layer includes: a hat bottom area forming a wearing space and a hat side area arranged around the hat bottom area;

[0014] The light emitting structure layer includes a first light emitting panel and a second light emitting panel, the first light emitting panel is correspondingly arranged in the cap bottom area, and the second light emitting panel is correspondingly arranged in the cap side area;

[0015] The second light emitting panel includes a plurality of sub-light emitting panels, and the plurality of sub-light emitting panels are not on the same plane, and the first light emitting panel includes a plurality of sub-light emitting panels.

[0016] In a possible embodiment, the photoinduced hair growth cap also includes a PCB board, and flexible circuit boards corresponding to the multiple sub-light-emitting panels of the first light-emitting panel and the multiple sub-light-emitting panels of the second light-emitting panel, respectively. Each sub-light-emitting panel is electrically connected to the PCB board via a flexible circuit board, and the PCB board is used to drive any one of the multiple sub-light-emitting panels of the first light-emitting panel and the multiple sub-light-emitting panels of the second light-emitting panel to emit light independently.

[0017] In a possible implementation manner, there is no overlapping area between the multiple sub-light emitting panels of the first light emitting panel, and there is no overlapping area between the multiple sub-light emitting panels of the second light emitting panel.

[0018] In a possible implementation manner, the supporting structure layer further includes a plurality of bendable regions.

[0019] In a possible implementation, each bendable region includes a plurality of etched holes arranged at intervals, wherein:

[0020] The depth of the etched hole is equal to the thickness of the support structure layer;

[0021] Alternatively, the depth of the etched hole is equal to half the thickness of the support structure layer;

[0022] Alternatively, the depth of the etched hole is greater than 0 cm and less than the thickness of the supporting structure layer.

[0023] In a possible embodiment, the photoinduced hair growth cap also includes a flexible circuit board and a PCB board, the PCB board is located on the side of the supporting structure layer away from the light-emitting structure layer, one end of the flexible circuit board is overlapped and electrically connected to the side of the light-emitting structure layer away from the light-transmitting protective film, and the other end of the flexible circuit board is overlapped and electrically connected to the side of the PCB board close to the light-emitting structure layer.

[0024] In a possible implementation, the photoinduced hair growth cap further includes a packaging layer, and the packaging layer is disposed between the supporting structure layer and the light-emitting structure layer.

[0025] In a possible implementation, the packaging layer is bonded to the supporting structure layer via a thermally conductive adhesive layer.

[0026] In a possible implementation, the light-emitting structure layer is a flexible OLED layer.

[0027] The present application provides a light-induced hair growth cap, comprising a supporting structure layer, a light-emitting structure layer and a light-transmitting protective film which are stacked in sequence. Moreover, the light-emitting area of ​​the light-emitting structure layer is projected on the supporting structure layer to cover the supporting structure layer. The light-emitting structure layer is used to emit light in the form of surface light through the light-transmitting protective film and output it, and the light emitted by the light-emitting structure layer has the function of stimulating scalp hair growth. In this way, the light received by the human scalp surface can be uniform, and the hair growth effect on the human scalp surface is the same. In addition, the temperature of the human scalp surface is also uniform, and the user experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 A schematic diagram of the exploded structure of the photoinduced hair growth cap provided in an embodiment of the present application;

[0030] Figure 2 A schematic structural diagram of a support structure layer provided in an embodiment of the present application at a first viewing angle;

[0031] Figure 3 A schematic structural diagram of a bendable area on a support structure layer provided in an embodiment of the present application;

[0032] Figure 4 for Figure 3 A cross-sectional view at point A in FIG.

[0033] Figure 5A cross-sectional view of a flexible OLED layer provided in an embodiment of the present application;

[0034] Figure 6 A schematic diagram of the structure of the light-emitting structure layer provided in an embodiment of the present application;

[0035] Figure 7 A schematic diagram of the partial structure of the photoinduced hair growth cap provided in an embodiment of the present application;

[0036] Figure 8 A schematic diagram of the structure of the support structure layer provided in an embodiment of the present application at a second viewing angle;

[0037] Fig. 9 for Figure 8 Cross-sectional view at point B in FIG. DETAILED DESCRIPTION

[0038] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0039] Various structural schematic diagrams according to embodiments of the present disclosure are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may further design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0040] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, the layer / element may be directly on the other layer / element or an intervening layer / element may exist therebetween. In addition, if a layer / element is "on" another layer / element in one orientation, the layer / element may be "below" the other layer / element when the orientation is reversed.

[0041] The inner side of the current photo-induced hair growth cap is equipped with multiple array-arranged laser light sources, each of which can emit a beam of light to illuminate the surface of the human scalp. In this way, the surface of the human scalp includes areas irradiated by the laser and areas not irradiated by the laser, resulting in uneven illumination, and thus different hair growth effects in areas irradiated by the laser and areas not irradiated by the laser. In addition, the temperature of the area irradiated by the laser will rise significantly, resulting in uneven temperature on the surface of the human scalp and a poor user experience.

[0042] Based on the above technical problems, the invention of this application is that the orthographic projection of the light-emitting area of ​​the light-emitting structure layer on the supporting structure layer covers the supporting structure layer, the light-emitting structure layer is used to emit light in the form of surface light through the light-transmitting protective film and output, and the light emitted by the light-emitting structure layer has the function of stimulating scalp hair growth. In this way, the light received by the human scalp surface can be uniform, and the hair growth effect on the human scalp surface is the same. In addition, the temperature of the human scalp surface is also uniform, and the user experience is good.

[0043] The following is a detailed description of the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0044] See also Figure 1 The embodiment of the present application provides a light-induced hair growth cap, including a support structure layer 103, a light-emitting structure layer 101 and a light-transmitting protective film 102.

[0045] The supporting structure layer 103 is configured to form a wearing space for the photoinduced hair growth cap.

[0046] Exemplarily, the thickness of the support structure layer 103 is greater than 0.1 mm, for example, the thickness of the support structure layer 103 may be 0.2 mm, 0.3 mm, or 0.4 mm, etc., which is not limited here. The support structure layer 103 may be an alloy material layer or other composite material layer, which is not limited here. In addition, the wearing space formed above is used for being worn on the head of a human body.

[0047] Specifically, Figure 2 As shown, the support structure layer 103 may include a plurality of bendable regions 108, and the bendable regions 108 of the support structure layer 103 may be bent to form a wearing space for the photoinduced hair growth cap.

[0048] like Figure 3 As shown, each bendable region 108 includes a plurality of etched holes 109 arranged at intervals. The geometric shape of the etched holes 109 can be elliptical, circular, rectangular, etc., which is not limited here.

[0049] For example, Figure 4 As shown in (a) of FIG. 1 , the depth of the etched hole 109 may be equal to the thickness of the support structure layer 103. Alternatively, Figure 4 As shown in (b) in FIG. 1 , the depth of the etched hole 109 may also be equal to half the thickness of the support structure layer 103; or Figure 4As shown in (c) in FIG. 1 , the depth of the etched hole 109 may also be greater than 0 cm and less than the thickness of the support structure layer 103 , and the depths of the various etched holes 109 may be different.

[0050] The light emitting structure layer 101 is stacked on a side of the supporting structure layer 103 close to the wearing space, and the orthographic projection of the light emitting area of ​​the light emitting structure layer 101 on the supporting structure layer 103 covers the supporting structure layer 103 .

[0051] Among them, the light emitting structure layer 101 is used to emit light in the form of surface light emission, and the light emitted by the light emitting structure layer 101 has the function of stimulating scalp hair growth. The light emitted by the light emitting structure layer 101 includes light with a peak wavelength between 600nm-700nm. It can be understood that the light with a peak wavelength between 600nm-700nm is red light, and red light has the function of stimulating scalp hair growth. For example, the peak wavelength of the light emitted by the light emitting structure layer 101 can be 627nm, 640nm, or 660nm, which is not limited here.

[0052] It can be understood that since the orthographic projection of the light-emitting area of ​​the light-emitting structure layer 101 on the supporting structure layer 103 covers the supporting structure layer 103, the light emitted by the light-emitting area of ​​the light-emitting structure layer 101 can illuminate the entire wearing space corresponding to the supporting structure layer 103, so that the entire scalp of the human body can be evenly illuminated.

[0053] Specifically, the light emitting structure layer 101 may be a flexible OLED layer but is not limited thereto, and the flexible OLED layer may emit light in a surface emitting manner. Figure 5 As shown, the flexible OLED layer may include a substrate 501, a driving device layer 502, a light emitting device layer 503, and a color filter layer 504.

[0054] In some embodiments, the substrate 501 may be, but is not limited to, a flexible substrate 501, and the flexible substrate 501 may include a silicon substrate, a polyethylene terephthalate (PET) substrate, a polyethylene naphthalate diformic acid glycol ester (PEN) substrate, or a colorless polyimide (CPI), etc. It can be understood that the substrate 501 is used to support and protect the entire light emitting structure layer 101.

[0055] The driving device layer 502 is disposed on one side of the base substrate 501. In some embodiments, the driving device layer 502 includes a plurality of pixel driving circuits. The pixel driving circuits may be, but are not limited to, thin film transistors (TFT).

[0056] The light-emitting device layer 503 is disposed on one side of the base substrate 501. The light-emitting device layer 503 includes a plurality of light-emitting devices, and each pixel driving circuit is electrically connected to a light-emitting device. Each light-emitting device includes: an anode, a light-emitting functional layer, and a cathode, and the anode is closer to the base substrate 501 than the cathode. In some embodiments, the anode is a reflective electrode and the cathode is a transparent electrode. The light-emitting functional layer may include: an organic light-emitting material layer, and at least one of a hole injection layer, a hole transport layer, and an electron blocking layer disposed between the cathode and the organic light-emitting material layer, and at least one of an electron injection layer, an electron transport layer, and a hole blocking layer disposed between the anode and the organic light-emitting material layer.

[0057] The color filter layer 504 is disposed on a side of the light emitting device layer 503 away from the base substrate 501. In some embodiments, the color filter layer 504 includes a shielding layer 506 and a color filter unit 507. The shielding layer 506 is provided with a plurality of pixel openings of a preset size facing the light emitting device, and the color filter unit 507 is located in the pixel openings.

[0058] The light-transmitting protective film 102 is stacked on a side of the light-emitting structure layer 101 away from the supporting structure layer 103 .

[0059] Exemplarily, the light transmittance of the light-transmitting protective film 102 is greater than 85%, so as to facilitate the light from the light-emitting structure layer 101 to reach the wearing space. In addition, the hardness of the light-transmitting protective film 102 is ≥ 2H, 500g. In this way, when the light-induced hair growth cap is worn, the light-transmitting protective film 102 can protect the light-emitting device layer 503 from being damaged by external pressure.

[0060] It should be noted that the shape of the light emitting structure layer 101 and the shape of the light-transmitting protective film 102 match the shape of the supporting structure layer 103 , so that it is more convenient for users to wear.

[0061] In summary, the photoinduced hair growth cap provided by the embodiment of the present application includes a supporting structure layer 103, a light-emitting structure layer 101, and a light-transmitting protective film 102 which are stacked in sequence. Moreover, the orthographic projection of the light-emitting area of ​​the light-emitting structure layer 101 on the supporting structure layer 103 covers the supporting structure layer 103. The light-emitting structure layer 101 is used to emit light in the form of surface light emission through the light-transmitting protective film 102 and output it, and the light emitted by the light-emitting structure layer 101 has the function of stimulating scalp hair growth. In this way, the light received by the human scalp surface can be uniform, and then the hair growth effect on the human scalp surface is the same. In addition, the temperature of the human scalp surface is also uniform, and the user experience is good.

[0062] In some embodiments, Figure 1 As shown, the photoinduced hair growth cap also includes a filter film 104, which is stacked between the light emitting structure layer 101 and the light-transmitting protective film 102. The filter film 104 is used to filter out the light with a wavelength below 600nm from the light emitted by the light emitting structure layer 101. For example, the transmittance of the filter film 104 to the light below 600nm is less than 1%. In addition, the thickness of the filter film 104 is greater than or equal to 25um. For example, the thickness of the filter film 104 can be 25um, 28um, 32um, etc., which is not limited here. In addition, the filter film 104 can be a red filter film 104 or a transparent filter film 104, etc., which is not limited here.

[0063] It can be understood that light below 600nm is not red light and does not have the function of stimulating scalp hair growth; filtering light with a wavelength below 600nm can make the light irradiated to the surface of the human scalp purer, and can further make the light reaching the human scalp have the function of stimulating scalp hair growth.

[0064] In the embodiment of the present application, the filter film 104 may be, but is not limited to, a polyethylene terephthalate film or a triacetate film.

[0065] In addition, if Figure 1 As shown, the filter film 104 is bonded to the light emitting structure layer 101 through the first adhesive layer 106, and the filter film 104 is bonded to the light-transmitting protective film 102 through the second adhesive layer 105. Exemplarily, the first adhesive layer 106 may be an optically transparent adhesive layer, and the light transmittance of the optically transparent adhesive layer is greater than 90%; the second adhesive layer 105 may be, but is not limited to, a pressure-sensitive adhesive layer, and the light transmittance of the pressure-sensitive adhesive layer is greater than 85%.

[0066] In some embodiments, the support structure layer 103 includes: a hat bottom area 601 forming a wearing space and a hat side area 602 arranged around the hat bottom area 601. Figure 6As shown, the light emitting structure layer 101 includes a first light emitting panel and a second light emitting panel. The first light emitting panel is correspondingly arranged in the cap bottom area 601, and the second light emitting panel is correspondingly arranged in the cap side area 602. The second light emitting panel includes a plurality of sub-light emitting panels 603, and the plurality of sub-light emitting panels 603 of the second light emitting panel are not in the same plane. It can be understood that the plurality of sub-light emitting panels 603 of the second light emitting panel surround the cap side area 602. Figure 6 As shown, the left and right sides of the cap side area 602 respectively include two trapezoidal sub-light emitting panels 603, and the front and rear sides of the cap side area 602 respectively include one hexagonal sub-light emitting panel 603. The first light emitting panel includes multiple sub-light emitting panels 603, and the multiple sub-light emitting panels 603 of the first light emitting panel are located in the same plane, and the multiple sub-light emitting panels 603 of the first light emitting panel constitute the cap bottom area 601. Figure 6 As shown, the cap bottom area 601 includes two trapezoidal sub-light emitting panels 603 .

[0067] The light-induced hair growth cap also includes a PCB board 702, and a flexible circuit board 701 corresponding to the multiple sub-light-emitting panels 603 of the first light-emitting panel and the multiple sub-light-emitting panels 603 of the second light-emitting panel. Each sub-light-emitting panel 603 is electrically connected to the PCB board 702 through a flexible circuit board 701, and the PCB board 702 is used to drive any of the multiple sub-light-emitting panels 603 of the first light-emitting panel and the multiple sub-light-emitting panels 603 of the second light-emitting panel to emit light independently. In this way, the user can control the sub-light-emitting panel 603 at the specified position to emit light according to personal needs, while the other sub-light-emitting panels 603 are in an off state, which can save power consumption.

[0068] It should be noted that Figure 6 As shown, there is no overlapping area between the multiple sub-light emitting panels 603 of the first light emitting panel, and there is no overlapping area between the multiple sub-light emitting panels 603 of the second light emitting panel. In this way, the wearing comfort of the user can be enhanced.

[0069] It can be understood that the photoinduced hair growth cap includes a plurality of sub-light emitting panels 603, which can enhance the toughness of the photoinduced hair growth cap and enhance the wearing comfort.

[0070] Furthermore, if Figure 7 As shown, the PCB board 702 is located on the side of the supporting structure layer 103 away from the light-emitting structure layer 101, one end of the flexible circuit board 701 is overlapped and electrically connected to the side of the light-emitting structure layer 101 away from the light-transmitting protective film 102, and the other end of the flexible circuit board 701 is overlapped and electrically connected to the side of the PCB board 702 close to the light-emitting structure layer 101.

[0071] In addition, if Figure 1As shown, the photoinduced hair growth cap may further include an encapsulation layer 107, which is disposed between the support structure layer 103 and the light emitting structure layer 101. The encapsulation layer 107 may be used to isolate air and moisture from entering the light emitting structure layer 101, thereby preventing the light emitting structure layer 101 from being corroded. Specifically, the encapsulation layer 107 may be bonded to the support structure layer 103 through a thermally conductive adhesive layer 100. The thermal conductivity of the thermally conductive adhesive layer 100 is not less than 0.33 W / (m·k), so that the heat generated by the light emitting structure layer 101 may be conducted to the light emitting structure layer 101 through the thermally conductive adhesive layer 100 and output to the outside.

[0072] It should be noted that the encapsulation layer 107 can be made of inorganic materials such as nitride, oxide, oxynitride, nitrate, carbide or any combination thereof, and the preparation process can be a chemical vapor deposition (CVD) process, such as a plasma enhanced chemical vapor deposition (PECVD) process. For example, the encapsulation layer 107 can be made of acrylic, hexamethyldisiloxane, polyacrylate, polycarbonate, polystyrene and other materials, and the preparation process can be an inkjet printing (IJP) process.

[0073] It should be noted that Figure 7 As shown, the encapsulation layer 107 is spaced apart from one end of the flexible circuit board 701, and a photosensitive adhesive layer 704 and a waterproof adhesive layer 703 are disposed in the spaced area between the encapsulation layer 107 and the flexible circuit board 701. The photosensitive adhesive layer 704 is disposed on and in contact with the side of the light-emitting structure layer 101 away from the light-transmitting protective film 102, and the waterproof adhesive layer 703 is disposed on and in contact with the side of the photosensitive adhesive layer 704 away from the light-transmitting protective film 102, and the encapsulation layer 107 is bonded to the flexible circuit board 701 through the photosensitive adhesive layer 704 and the waterproof adhesive layer 703. In this way, the light-emitting structure layer 101 and the conductive adhesive layer used to electrically connect the light-emitting structure layer 101 and the flexible circuit board 701 can be prevented from being corroded by external water vapor.

[0074] It should be noted that if Figure 8 As shown, the support structure layer 103 may include a first support plate 801 and a second support plate 802, and the first support plate 801 and the second support plate 802 may be connected by a connecting component. The connecting component may include a connecting plate 803, a first adhesive layer 804 and a second adhesive layer 805. Specifically, as Fig. 9As shown, the first support plate 801 and the second support plate 802 are spaced apart, one end of the connecting plate 803 is bonded to the first support plate 801 through the first adhesive layer 804, and the other end of the connecting plate 803 is bonded to the second support plate 802 through the second adhesive layer 805. Among them, the connecting plate 803 can be an alloy metal plate, a polymer composite plate or a ceramic plate, etc., which is not limited here. It can be understood that the support structure layer 103 includes the first support plate 801 and the second support plate 802, which can enhance the toughness of the photoinduced hair growth cap and enhance the wearing comfort.

[0075] In the above description, the technical details such as the patterning of each layer are not described in detail. However, those skilled in the art should understand that various technical means can be used to form layers, regions, etc. of desired shapes. In addition, in order to form the same structure, those skilled in the art can also design methods that are not completely the same as the methods described above. In addition, although the various embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage.

[0076] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0077] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A photoinduced hair growth cap, characterized in that: include: A supporting structure layer, configured to form a wearing space for the photoinduced hair growth cap; A light-emitting structure layer is stacked on a side of the supporting structure layer close to the wearing space, and the orthographic projection of the light-emitting area of ​​the light-emitting structure layer on the supporting structure layer covers the supporting structure layer; A light-transmitting protective film is stacked on a side of the light-emitting structure layer away from the supporting structure layer. The shapes of the light-emitting structure layer and the light-transmitting protective film match the shape of the supporting structure layer. The light-emitting structure layer is used to emit light in the form of surface light to pass through the light-transmitting protective film and output it, and the light emitted by the light-emitting structure layer has the function of stimulating hair growth on the scalp.

2. The photoinduced hair growth cap according to claim 1, characterized in that: The photoinduced hair growth cap further comprises a filter film, which is stacked between the light emitting structure layer and the light-transmitting protective film, and is used to filter out light with a wavelength below 600 nm from the light emitted by the light emitting structure layer.

3. The photoinduced hair growth cap according to claim 2, characterized in that: The filter film is a polyethylene terephthalate film or a triacetate cellulose film.

4. The photoinduced hair growth cap according to claim 2, characterized in that: The filter film is bonded to the light emitting structure layer via a first bonding layer, and the filter film is bonded to the light-transmitting protective film via a second bonding layer.

5. The photoinduced hair growth cap according to claim 1, characterized in that: The light emitted by the light emitting structure layer includes light with a peak wavelength between 600nm and 700nm.

6. The photoinduced hair growth cap according to claim 1, characterized in that: The support structure layer includes: a hat bottom area forming the wearing space and a hat side area arranged around the hat bottom area; The light emitting structure layer includes a first light emitting panel and a second light emitting panel, wherein the first light emitting panel is correspondingly arranged in the cap bottom area, and the second light emitting panel is correspondingly arranged in the cap side area; The second light emitting panel includes a plurality of sub-light emitting panels, and the plurality of sub-light emitting panels are not on the same plane, and the first light emitting panel includes a plurality of sub-light emitting panels.

7. The photoinduced hair growth cap according to claim 6, characterized in that: The photoinduced hair growth cap also includes a PCB board and flexible circuit boards corresponding to the multiple sub-light-emitting panels of the first light-emitting panel and the multiple sub-light-emitting panels of the second light-emitting panel, respectively. Each of the sub-light-emitting panels is electrically connected to the PCB board via a flexible circuit board, and the PCB board is used to drive any one of the multiple sub-light-emitting panels of the first light-emitting panel and the multiple sub-light-emitting panels of the second light-emitting panel to emit light independently.

8. The photoinduced hair growth cap according to claim 6, characterized in that: There is no overlapping area between the multiple sub-light emitting panels of the first light emitting panel, and there is no overlapping area between the multiple sub-light emitting panels of the second light emitting panel.

9. The photoinduced hair growth cap according to claim 1, characterized in that: The supporting structure layer also includes a plurality of bendable areas.

10. The photoinduced hair growth cap according to claim 9, characterized in that: Each bendable region includes a plurality of etched holes arranged at intervals, wherein: The depth of the etched hole is equal to the thickness of the support structure layer; Alternatively, the depth of the etched hole is equal to half the thickness of the support structure layer; Alternatively, the depth of the etched hole is greater than 0 cm and less than the thickness of the supporting structure layer.

11. The photoinduced hair growth cap according to claim 1, characterized in that: The photoinduced hair growth cap also includes a flexible circuit board and a PCB board, wherein the PCB board is located on a side of the supporting structure layer away from the light-emitting structure layer, one end of the flexible circuit board is overlapped and electrically connected to a side of the light-emitting structure layer away from the light-transmitting protective film, and the other end of the flexible circuit board is overlapped and electrically connected to a side of the PCB board close to the light-emitting structure layer.

12. The photoinduced hair growth cap according to claim 1, characterized in that: The photoinduced hair growth cap further includes a packaging layer, and the packaging layer is arranged between the supporting structure layer and the light emitting structure layer.

13. The photoinduced hair growth cap according to claim 12, characterized in that: The packaging layer is bonded to the supporting structure layer via a thermally conductive adhesive layer.

14. The photoinduced hair growth cap according to any one of claims 1 to 13, characterized in that: The light emitting structure layer is a flexible OLED layer.

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