A light therapy device

Abstract

The application discloses a phototherapy device, comprising: a light-emitting structure and a flexible friction nanometer power generation structure arranged on one side of the light-emitting structure; the flexible friction nanometer power generation structure is used for powering the light-emitting structure to make the light-emitting structure emit light; the flexible friction nanometer power generation structure comprises a flexible electrode and flexible polymer layers arranged on two sides of the flexible electrode, the flexible electrode is electrically connected with a first electrode of the light-emitting structure, and a second electrode of the light-emitting structure contacts the skin; or, the flexible friction nanometer power generation structure comprises two oppositely arranged flexible electrodes, each flexible electrode is provided with a flexible polymer layer on the surface adjacent to the surface of the other flexible electrode, one of the two flexible electrodes is electrically connected with the first electrode of the light-emitting structure, and the other flexible electrode is electrically connected with the second electrode of the light-emitting structure. The phototherapy device provided by the application does not need to be provided with an external power supply, and the use convenience and comfort of the phototherapy device are improved.

Description

Technical Field

[0001] This invention relates to the field of phototherapy technology, and more particularly to a phototherapy device. Background Technology

[0002] Currently, many phototherapy devices require an external power source to emit light and perform phototherapy when treating the human body. This inevitably causes discomfort to the patient during the treatment process due to interference from the external power source. Summary of the Invention

[0003] This invention provides a phototherapy device that eliminates the need for an external power supply, thereby improving the ease of use and comfort of the device.

[0004] According to one aspect of the present invention, a phototherapy device is provided, comprising:

[0005] A light-emitting structure and a flexible triboelectric nanostructure disposed on one side of the light-emitting structure;

[0006] Flexible triboelectric nanostructures are used to power light-emitting structures, enabling them to emit light.

[0007] The flexible triboelectric nanostructure includes a flexible electrode and flexible polymer layers located on both sides of the flexible electrode. The flexible electrode is electrically connected to the first electrode of the light-emitting structure, and the second electrode of the light-emitting structure is in contact with the skin. Alternatively, the flexible triboelectric nanostructure includes two flexible electrodes arranged opposite each other. Each flexible electrode has a flexible polymer layer on its surface adjacent to the other flexible electrode. There is a gap between the two flexible polymer layers. One of the two flexible electrodes is electrically connected to the first electrode of the light-emitting structure, and the other flexible electrode is electrically connected to the second electrode of the light-emitting structure.

[0008] Optionally, the flexible triboelectric nanostructure includes a first flexible polymer layer having a cavity in which a conductive liquid is disposed;

[0009] The conductive liquid is electrically connected to the first electrode of the light-emitting structure;

[0010] The second electrode of the light-emitting structure contacts the skin.

[0011] Optionally, the conductive liquid includes an aqueous sodium chloride solution; the first flexible polymer layer is a polydimethylsiloxane layer, a polycaprolactone layer, or a hybrid resin layer of a mixture of a photocurable acrylate layer and a semi-crystalline thermoplastic polycaprolactone.

[0012] Optionally, the flexible triboelectric nanogenerator structure includes a first flexible electrode, a second flexible polymer layer, a third flexible polymer layer, and a second flexible electrode stacked sequentially, wherein the second flexible polymer layer is disposed on the surface of the first flexible electrode and the third flexible polymer layer is disposed on the surface of the second flexible electrode layer.

[0013] An elastic support is provided between the second and third flexible polymer layers, or between the first and second flexible electrodes.

[0014] Optionally, the second flexible polymer layer is a hybrid resin layer of a mixture of polydimethylsiloxane, polycaprolactone, photocurable acrylate, and semi-crystalline thermoplastic polycaprolactone, a cellulose aerogel layer, or a chitosan aerogel layer.

[0015] The third flexible polymer layer is a polydimethylsiloxane layer, a polycaprolactone layer, a hybrid resin layer of a mixture of light-cured acrylate and semi-crystalline thermoplastic polycaprolactone, a porous polydimethylsiloxane aerogel layer, or a porous polyimide aerogel layer.

[0016] Optionally, the flexible electrode may be made of a hydrogel doped with conductive particles.

[0017] Optionally, the phototherapy device includes at least two layers of flexible triboelectric nanostructures;

[0018] When a flexible triboelectric nanostructure includes a flexible electrode, the flexible electrodes of each flexible triboelectric nanostructure are electrically connected to each other.

[0019] When a flexible triboelectric nanostructure includes two flexible electrodes, one flexible electrode of each flexible triboelectric nanostructure is electrically connected to the other, and the other flexible electrode is electrically connected to the other.

[0020] Optionally, when the flexible triboelectric nanostructure includes two flexible electrodes, adjacent flexible triboelectric nanostructures share the same flexible electrode.

[0021] Optionally, the flexible triboelectric nanostructure is disposed on the surface of the first electrode of the light-emitting structure;

[0022] The flexible electrode of the flexible triboelectric nanostructure is electrically connected to the first electrode via conductive adhesive; or, the first electrode of the light-emitting structure is reused as a flexible electrode of the flexible triboelectric nanostructure.

[0023] Optionally, the flexible electrode is doped with scattering particles;

[0024] The flexible polymer layer and / or the flexible electrode surface have an uneven structure.

[0025] The phototherapy device provided in this invention includes a light-emitting structure and a flexible triboelectric nano-power generation structure disposed on one side of the light-emitting structure. The flexible triboelectric nano-power generation structure supplies power to the light-emitting structure, causing it to emit light. The flexible triboelectric nano-power generation structure includes a flexible electrode and flexible polymer layers located on both sides of the flexible electrode. The flexible electrode is electrically connected to a first electrode of the light-emitting structure, and the second electrode of the light-emitting structure contacts the skin. Alternatively, the flexible triboelectric nano-power generation structure includes two oppositely disposed flexible electrodes. Each flexible electrode has a flexible polymer layer disposed on the surface adjacent to the other flexible electrode, with a gap between the two flexible polymer layers. One of the two flexible electrodes is electrically connected to the first electrode of the light-emitting structure, and the other flexible electrode is electrically connected to the second electrode of the light-emitting structure. By rubbing or tapping the flexible triboelectric nano-power generation structure, it collects mechanical energy and generates voltages of varying magnitudes within a short time, supplying power to the light-emitting structure and causing it to emit light. No external power supply is required, and the flexible triboelectric nano-power generation structure can be bent into any shape as needed, improving the ease of use and comfort of the phototherapy device.

[0026] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a phototherapy device provided in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of another phototherapy device provided in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of another phototherapy device provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of another phototherapy device provided in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of another phototherapy device provided in an embodiment of the present invention;

[0033] Figure 6This is a schematic diagram of the structure of another phototherapy device provided in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of another phototherapy device provided in an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of another phototherapy device provided in an embodiment of the present invention. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] This invention provides a phototherapy device. Figure 1 This is a schematic diagram of the structure of a phototherapy device provided in an embodiment of the present invention, for reference. Figure 1 The phototherapy device includes: a light-emitting structure 200 and a flexible triboelectric nano-power generation structure 100 disposed on one side of the light-emitting structure 200; the flexible triboelectric nano-power generation structure 100 is used to supply power to the light-emitting structure 200, so that the light-emitting structure 100 emits light. Figure 2 This is a schematic diagram of another phototherapy device provided in an embodiment of the present invention, for reference. Figure 2 The flexible triboelectric nanostructure 100 includes a flexible electrode 110 and flexible polymer layers 120 located on both sides of the flexible electrode 110. The flexible electrode 110 is electrically connected to the first electrode 210 of the light-emitting structure 200, and the second electrode 230 of the light-emitting structure 200 is in contact with the skin; or, Figure 3 This is a schematic diagram of another phototherapy device provided in an embodiment of the present invention, for reference. Figure 3 The flexible triboelectric nanostructure 100 includes two flexible electrodes 110 arranged opposite each other. Each flexible electrode 110 has a flexible polymer layer 120 disposed on the surface adjacent to the other flexible electrode 110. There is a gap between the two flexible polymer layers 120. One of the two flexible electrodes 110 is electrically connected to the first electrode 210 of the light-emitting structure 200, and the other flexible electrode 110 is electrically connected to the second electrode 230 of the light-emitting structure.

[0039] The light-emitting structure 200 can serve as a light source for a phototherapy device, irradiating the treatment area to achieve a phototherapy effect. The light-emitting structure 200 can be a flexible light-emitting structure; for example, it can include organic or inorganic light-emitting structures. When the light-emitting structure 200 includes an organic light-emitting structure, it further includes an organic light-emitting layer 220, which is disposed between the first electrode 210 and the second electrode 230. Both the first electrode 210 and the second electrode 230 are flexible electrodes, and the organic light-emitting structure can be bent into any shape. When the light-emitting structure 200 includes an inorganic light-emitting structure, multiple inorganic light-emitting mechanisms can be disposed on a flexible substrate, which can be bent into any shape. When the light-emitting structure 200 includes both organic and inorganic light-emitting mechanisms, the inorganic light-emitting structures can be disposed between the organic light-emitting structures. The light-emitting structure 200 can be in direct contact with the flexible triboelectric nanostructure 100, or a planarization layer or other film layers can be disposed between them.

[0040] Specifically, the flexible electrode 110 of the flexible triboelectric nanostructure 100 can be a solid electrode, such as a hydrogel electrode or a flexible metal electrode; the flexible electrode 110 can also be a liquid electrode, such as a conductive liquid. The flexible polymer layer 120 can be a shape memory polymer or other polymers. The flexible triboelectric nanostructure 100 of this embodiment includes a flexible electrode 110 and a flexible polymer layer 120. During use, the flexible triboelectric nanostructure 100 can be bent into any shape according to different usage requirements. When the light-emitting structure 200 is a flexible light-emitting structure, the entire phototherapy device can be bent into any shape as needed, making the phototherapy device more convenient to use. When the flexible polymer layer 120 is a shape memory polymer, the flexible triboelectric nanostructure 100 can change and maintain a specific shape according to different usage requirements.

[0041] refer to Figure 2The flexible triboelectric nanostructure 100 can be a single-electrode flexible triboelectric nanostructure 100. The flexible electrode 110 of the flexible triboelectric nanostructure 100 can be electrically connected to the first electrode 210 of the light-emitting structure 200 through a through-hole 400 in the flexible polymer layer 120, and the second electrode 230 of the light-emitting structure 200 contacts the skin. When a charged object touches or leaves the flexible triboelectric nanostructure 100 (e.g., a person pats or rubs the flexible triboelectric nanostructure 100), it changes the electric field distribution of the flexible polymer layer 120 and the flexible electrode 110 in the flexible triboelectric nanostructure 100, thereby supplying power to the light-emitting structure 200.

[0042] refer to Figure 3 The flexible triboelectric nanostructure 100 can be a dual-electrode flexible triboelectric nanostructure 100. One flexible electrode 110 of the flexible triboelectric nanostructure 100 is electrically connected to the first electrode 210 of the light-emitting structure 200 via conductive adhesive 500, and the other flexible electrode 110 is electrically connected to the second electrode 230 of the light-emitting structure via conductive structure 300. By tapping the flexible triboelectric nanostructure 100, the two flexible polymer layers 120 in the flexible triboelectric nanostructure 100 come into contact, forming surface charges of opposite signs on the contact surfaces of the two flexible polymer layers 120. When these two surfaces separate, a small air gap is formed in the middle, creating an induced potential difference between the two flexible electrodes 110. If the light-emitting structure 200 is connected between the two flexible electrodes 110, electrons will flow through the light-emitting structure 200 from one flexible electrode 110 to the other, forming a reverse potential difference to balance the electrostatic field, thereby supplying power to the light-emitting structure 200.

[0043] The phototherapy device provided by the embodiments of the present invention includes a light-emitting structure 200 and a flexible triboelectric nano-power generation structure 100 disposed on one side of the light-emitting structure 200; the flexible triboelectric nano-power generation structure 100 is used to supply power to the light-emitting structure 200, causing the light-emitting structure 200 to emit light. The flexible triboelectric nano-power generation structure 100 includes a flexible electrode 110 and flexible polymer layers 120 located on both sides of the flexible electrode 110. The flexible electrode 110 is electrically connected to the first electrode 210 of the light-emitting structure 200, and the second electrode 230 of the light-emitting structure 200 contacts the skin; or, the flexible triboelectric nano-power generation structure 100 includes two flexible electrodes 110 disposed opposite to each other, each flexible electrode 110 having a flexible polymer layer 120 disposed on the surface adjacent to the other flexible electrode 110, with a gap between the two flexible polymer layers 120, one of the two flexible electrodes 110 being electrically connected to the first electrode 210 of the light-emitting structure 200, and the other flexible electrode 110 being electrically connected to the second electrode 230 of the light-emitting structure. By rubbing or tapping the flexible triboelectric nano-power generation structure 100, the flexible triboelectric nano-power generation structure 100 will collect mechanical energy and generate voltages of different magnitudes in a very short time, which will power the light-emitting structure 200 and make the light-emitting structure 200 emit light. No external power supply is required. Furthermore, the flexible triboelectric nano-power generation structure 100 can be bent into any shape as needed, which improves the convenience and comfort of using the phototherapy device.

[0044] Optional, Figure 4 This is a schematic diagram of another phototherapy device provided in an embodiment of the present invention, for reference. Figure 4 The flexible triboelectric nanostructure 100 includes a first flexible polymer layer 121, which has a cavity and a conductive liquid 111 is disposed inside the cavity; the conductive liquid 111 is electrically connected to the first electrode 210 of the light-emitting structure 200; and the second electrode 230 of the light-emitting structure 200 is in contact with the skin.

[0045] The first flexible polymer layer 121 can be a shape memory polymer or other flexible polymers. The conductive liquid 111 serves as the flexible electrode of the flexible triboelectric nano-power generation structure 100. When a charged object contacts and leaves the first flexible polymer layer 121 of the flexible triboelectric nano-power generation structure 100, it changes the local electric field distribution of the conductive liquid 111 in the flexible triboelectric nano-power generation structure 100, thereby supplying power to the light-emitting structure 200. Since the conductive liquid 111 is disposed within the cavity, its shape can change with the shape of the cavity, making the shape of the flexible triboelectric nano-power generation structure 100 easier to modify and suitable for different applications. Furthermore, when the light-emitting structure 200 generates heat during operation, the conductive liquid 111 can also dissipate heat, improving the heat dissipation effect of the phototherapy device and thus extending the service life of the light-emitting structure 200.

[0046] Optionally, the conductive liquid includes an aqueous sodium chloride solution; the first flexible polymer layer is a polydimethylsiloxane layer, a polycaprolactone layer, or a hybrid resin layer of a mixture of a photocurable acrylate layer and a semi-crystalline thermoplastic polycaprolactone.

[0047] Sodium chloride can completely ionize in water, forming freely moving cations and anions, giving water conductivity. Therefore, sodium chloride aqueous solution has good conductivity. Including sodium chloride aqueous solution in the conductive liquid enhances its conductivity, allowing the flexible triboelectric nanostructure to better power the light-emitting structure. Furthermore, sodium chloride aqueous solution is inexpensive and easy to prepare, reducing costs. The polydimethylsiloxane layer, polycaprolactone layer, and hybrid resin layer consisting of a mixture of photocurable acrylate layer and semi-crystalline thermoplastic polycaprolactone all possess good flexibility and can generate a significant amount of charge upon contact with other materials. Using these layers can improve the power generation efficiency of the triboelectric nanostructure.

[0048] Optional, see reference Figure 3 The flexible triboelectric nanostructure 100 includes a first flexible electrode 112, a second flexible polymer layer 122, a third flexible polymer layer 123, and a second flexible electrode 113, which are sequentially stacked. The second flexible polymer layer 122 is disposed on the surface of the first flexible electrode 112, and the third flexible polymer layer 123 is disposed on the surface of the second flexible electrode layer 113. An elastic support 130 is provided between the second flexible polymer layer 122 and the third flexible polymer layer 123. Figure 5 This is a schematic diagram of another phototherapy device provided in an embodiment of the present invention, for reference. Figure 5 An elastic support 130 is provided between the first flexible electrode 112 and the second flexible electrode 113.

[0049] The elastic support 130 is elastic and can be made of the same material as the second flexible polymer layer 122 or the third flexible polymer layer 123, or it can be made of other elastic materials. When the elastic support 130 is present between the second flexible polymer layer 122 and the third flexible polymer layer 123, or between the first flexible electrode layer 112 and the second flexible electrode layer 113, when a force is applied to the flexible triboelectric nanostructure 100, the second flexible polymer layer 122 and the third flexible polymer layer 123 deform, and the elastic support 130 is also compressed. This makes it easier for the second flexible polymer layer 122 and the third flexible polymer layer 123 to come into contact, and a smaller external force is required to make the second flexible polymer layer 122 and the third flexible polymer layer 123 come into contact, thereby improving the power generation efficiency.

[0050] Optionally, the second flexible polymer layer 122 is a hybrid resin layer of a mixture of polydimethylsiloxane, polycaprolactone, photocurable acrylate, and semi-crystalline thermoplastic polycaprolactone, a cellulose aerogel layer, or a chitosan aerogel layer; the third flexible polymer layer 123 is a hybrid resin layer of a mixture of polydimethylsiloxane, polycaprolactone, photocurable acrylate, and semi-crystalline thermoplastic polycaprolactone, a porous polydimethylsiloxane aerogel layer, or a porous polyimide aerogel layer.

[0051] Specifically, the polydimethylsiloxane layer, polycaprolactone layer, photocurable acrylate layer, and hybrid resin layer of semi-crystalline thermoplastic polycaprolactone, cellulose aerogel layer, chitosan aerogel layer, porous polydimethylsiloxane aerogel layer, and porous polyimide aerogel layer all possess good flexibility and can generate more charge when in contact with other materials. Using these film layers can improve the power generation efficiency of the triboelectric nanostructure. Furthermore, the hybrid resin material of photocurable acrylate layer and semi-crystalline thermoplastic polycaprolactone has shape memory function, meaning it can change the shape of the hybrid resin layer and maintain that shape after the change. When the second flexible polymer layer 122 and the third flexible polymer layer 123 are hybrid resin layers of a mixture of photocurable acrylate layer and semi-crystalline thermoplastic polycaprolactone, the shape of the flexible triboelectric nano-power generation structure can be changed as needed, and the flexible triboelectric nano-power generation structure can be maintained in that shape. When the light-emitting structure 200 is a flexible light-emitting structure, the shape of the entire phototherapy device can be changed as needed, so that the phototherapy device can be maintained in that shape.

[0052] Furthermore, cellulose aerogel layers, chitosan aerogel layers, porous polydimethylsiloxane aerogel layers, and porous polyimide aerogel layers have higher charge generation efficiency compared to other materials. When the second flexible polymer layer is a cellulose aerogel layer or a chitosan aerogel layer, and when the third flexible polymer layer is a porous polydimethylsiloxane aerogel layer or a porous polyimide aerogel layer, the flexible triboelectric nanostructure has even higher power generation efficiency.

[0053] Optionally, the flexible electrode may be made of a hydrogel doped with conductive particles.

[0054] Hydrogels possess excellent electrical conductivity, elasticity, and visible light transmittance. When flexible triboelectric nanostructures are placed on the light-emitting side of the luminescent structure, their impact on light emission is minimal. Furthermore, triboelectric nanostructures made from hydrogels can adhere well to human skin. Conductive particles, such as sodium chloride ions, can further enhance the conductivity of the hydrogel.

[0055] Optionally, the phototherapy device includes at least two layers of flexible triboelectric nanostructures; when the flexible triboelectric nanostructure includes a flexible electrode, the flexible electrodes of each flexible triboelectric nanostructure are electrically connected to each other. Figure 6 This is a schematic diagram of the structure of another phototherapy device provided in an embodiment of the present invention; see reference. Figure 6 When the flexible triboelectric nanostructure 100 includes two flexible electrodes 110, one flexible electrode 110 of each flexible triboelectric nanostructure 100 is electrically connected to the other, and the other flexible electrode 110 is electrically connected to the other.

[0056] The phototherapy device includes at least two layers of flexible triboelectric nanostructures 100, which can increase the power supply voltage to the light-emitting structure 200.

[0057] Optional, Figure 7 This is a schematic diagram of another phototherapy device provided in an embodiment of the present invention, for reference. Figure 7 When the flexible triboelectric nanostructure 100 includes two flexible electrodes 110, adjacent flexible triboelectric nanostructures 100 share the same flexible electrode 110.

[0058] By having adjacent flexible triboelectric nano-power generation structures 110 share the same flexible electrode 110, the thickness of the phototherapy device can be reduced, and the flexibility of the phototherapy device can be improved.

[0059] Optional, see reference Figure 3 The flexible triboelectric nanostructure 100 is disposed on the surface of the first electrode 210 of the light-emitting structure 200; the flexible electrode 110 of the flexible triboelectric nanostructure 100 is electrically connected to the first electrode 210 through conductive adhesive 500; or, Figure 8 This is a schematic diagram of another phototherapy device provided in an embodiment of the present invention, for reference. Figure 8 The first electrode 210 of the light-emitting structure 200 is reused as a flexible electrode of the flexible triboelectric nano-power generation structure 100.

[0060] In this design, the first electrode 210 of the light-emitting structure 200 reuses a flexible electrode of the flexible triboelectric nano-power generation structure 100, that is, the light-emitting structure 200 and the adjacent flexible triboelectric nano-power generation structure 100 share a single electrode, which can further reduce the thickness of the phototherapy device and improve its flexibility.

[0061] Optionally, the flexible electrode is doped with scattering particles; the flexible polymer layer and / or the surface of the flexible electrode has an uneven structure.

[0062] The scattering particles can be nano-titanium dioxide, nano-alumina, etc. By doping the flexible electrode with scattering particles, the particles can scatter the light emitted from the light-emitting structure, thereby improving the light extraction efficiency of the light-emitting structure. The flexible polymer layer and / or the surface of the flexible electrode have an uneven structure, which can further scatter the light emitted from the light-emitting structure, further improving the light extraction efficiency.

[0063] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0064] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A phototherapy device, characterized in that, include: A light-emitting structure and a flexible triboelectric nanostructure disposed on one side of the light-emitting structure; The flexible triboelectric nanostructure is used to power the light-emitting structure, enabling the light-emitting structure to emit light. The flexible triboelectric nanostructure includes two flexible electrodes arranged opposite each other. Each flexible electrode has a flexible polymer layer on its surface adjacent to the other flexible electrode. There is a gap between the two flexible polymer layers. One of the two flexible electrodes is electrically connected to the first electrode of the light-emitting structure, and the other flexible electrode is electrically connected to the second electrode of the light-emitting structure. The flexible triboelectric nanostructure includes a first flexible electrode, a second flexible polymer layer, a third flexible polymer layer, and a second flexible electrode stacked sequentially. The second flexible polymer layer is disposed on the surface of the first flexible electrode, and the third flexible polymer layer is disposed on the surface of the second flexible electrode. An elastic support is provided between the second flexible polymer layer and the third flexible polymer layer, or an elastic support is provided between the first flexible electrode and the second flexible electrode.

2. The phototherapy device according to claim 1, characterized in that: The second flexible polymer layer is a hybrid resin layer consisting of a polydimethylsiloxane layer, a polycaprolactone layer, a light-cured acrylate layer, and a mixture of semi-crystalline thermoplastic polycaprolactone, a cellulose aerogel layer, or a chitosan aerogel layer. The third flexible polymer layer is a polydimethylsiloxane layer, a polycaprolactone layer, a hybrid resin layer of a mixture of light-cured acrylate and semi-crystalline thermoplastic polycaprolactone, a porous polydimethylsiloxane aerogel layer, or a porous polyimide aerogel layer.

3. The phototherapy device according to claim 1, characterized in that: The flexible electrode is made of a hydrogel, which is doped with conductive particles.

4. The phototherapy device according to claim 1, characterized in that: The phototherapy device includes at least two layers of flexible triboelectric nanostructures; Each of the flexible triboelectric nanostructures has one flexible electrode electrically connected to the other, and the other flexible electrode is also electrically connected to the other.

5. The phototherapy device according to claim 4, characterized in that: The adjacent flexible triboelectric nanostructures share the same flexible electrode.

6. The phototherapy device according to claim 1, characterized in that: The flexible triboelectric nanostructure is disposed on the surface of the first electrode of the light-emitting structure; The flexible electrode of the flexible triboelectric nanostructure is electrically connected to the first electrode via conductive adhesive; or, the first electrode of the light-emitting structure is reused as a flexible electrode of the flexible triboelectric nanostructure.

7. The phototherapy device according to claim 1, characterized in that: The flexible electrode is doped with scattering particles; The flexible polymer layer and / or the surface of the flexible electrode have an uneven structure.

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