CN112754764A

CN112754764A - OLED phototherapy band-aid

Info

Publication number: CN112754764A
Application number: CN202011613717.5A
Authority: CN
Inventors: 高东东; 庞惠卿; 丁尚; 刘琪
Original assignee: Beijing Xiahe Technology Co ltd
Current assignee: Beijing Xiahe Technology Co ltd; Beijing Summer Sprout Technology Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-07

Abstract

An OLED phototherapy band-aid is disclosed. The OLED phototherapy band-aid comprises at least one phototherapy component and at least one pharmacotherapy part; the phototherapy assembly comprises at least one OLED light-emitting panel, a power supply device and a shell; the medical treatment part comprises a medical adhesive plaster and a water absorption layer; phototherapy subassembly detachable fixes on the part is treated with medicine, phototherapy subassembly's light emitting surface orientation includes the layer that absorbs water. The phototherapy subassembly is the modularization subassembly, can tear down at any time and change new layer that absorbs water and continue to use, both conveniently carry, resources are saved again, and modularization phototherapy subassembly dismouting, increase and decrease wantonly can adapt to the wound of different shapes and size.

Description

OLED phototherapy band-aid

Technical Field

The invention relates to a band-aid. More particularly, it relates to an OLED phototherapy band-aid comprising a pharmacotherapy portion and a phototherapy assembly. Also discloses an assembly and a use method of the OLED phototherapy band-aid.

Background

The band-aid is the most common hemostatic surgical medicine used by people in life after small wounds occur.

The traditional band-aid comprises: the medical adhesive plaster consists of a medical adhesive plaster and a water absorption layer (usually gauze), and some production methods add medicines on the water absorption layer on the basis of the medical adhesive plaster to promote the wound to heal quickly. However, the air permeability of the outer layer of the band-aid is poor, and the moist and warm environment has the risk of causing bacterial infection to the wound, so that the traditional band-aid is not suitable for being used for too long time and needs to be replaced frequently, and the antibacterial capacity is limited.

Phototherapy woundplast: because mitochondria absorb red light most in cells, after red light irradiation, the catalase activity of mitochondria is increased, the metabolism of cells is stimulated, the glycogen content, the protein synthesis and the adenosine triphosphate decomposition are improved, so that the cell regeneration is promoted, the healing of wounds and ulcers is accelerated, the phagocytosis of white blood cells is increased, and the immunity of an organism is improved. Current commercial phototherapy light sources fall into two categories: one is an LED light source and the other is a laser light source. The LED light source and the laser light source are point light sources, the illumination area is limited, and the whole wound is difficult to cover; meanwhile, the two light sources are both made of hard semiconductor materials, have poor flexibility and are not suitable for being applied to the surface of curved human skin; in addition, because the light-emitting area is small, the current density of the LED light source and the laser light source is high, local heating is easily caused, and the skin is seriously burnt, especially the laser light source; furthermore, both light sources are naturally higher intensity as point light sources, which also may disturb the visual impression of the wearer and the person around them. On the other hand, the OLED light source utilizes the principle of organic material electroluminescence, can randomly adjust the light emitting color by changing the molecular structure, can cover the wave band from blue light to near infrared, and can even adjust the color by changing the current density or the temperature in one device structure, and can simultaneously realize various phototherapy efficacies of accelerating wound healing, sterilizing and diminishing inflammation, stimulating cell regeneration and the like; secondly, the OLED light source can be prepared in a film form with nanometer-level thickness, the finished product is light and thin, and the flexible light source can be prepared on a flexible substrate and can better match the radian of the surface of a human body; the OLED is a surface light source and is particularly suitable for treating large-area wounds; meanwhile, the surface light source means that the current density of the surface light source is relatively low, so that the OLED light source does not generate heat, can directly contact with the skin, does not form a concentrated light spot to disturb vision, and is an ideal light source of phototherapy products.

In CN204951964U, the design of a photomedical dressing for phototherapy with a flexible light emitting unit is mentioned, and it is mentioned that the light emitting unit may be an OLED. But the necessity of a scattering medium is emphasized, and the light source is required to be packaged in the scattering medium to form a whole with the scattering medium, so that the design is not beneficial to replacing the light source and can only be used once. Further, CN205108772U discloses a wearable light emitting device, which emphasizes that various power supply devices and light emitting units are highly integrated in a closed structure in a compact manner, and the light source replacement is also difficult. Jeon et al (Jeon, y., Choi, h. -r., Lim, m., Choi, s., Kim, h., Kwon, j.h., Park, k. -c., Choi, k.c., adv.mater.technol.2018,3,1700391. doi: 10.1002/admt.201700391) showed in 2018 a finished adhesive article integrating a flexible red OLED (as shown in fig. 1 in this document) which integrated a bottom-emitting flexible OLED device, a heat sink and a thin film battery on an adhesive tape using a plastic molding technique (as shown in fig. 2 in this document), which also showed a great advantage of an OLED as a light source for wearable phototherapy because the used components are all flexible and have a very high degree of adhesion. However, as in the prior art, the flexible OLED device and its power source used in the flexible adhesive bandage are completely enclosed and integrated on the adhesive tape, which is not conducive to replacing the battery or the OLED itself, and therefore, the flexible adhesive bandage is high in cost, and the flexible adhesive bandage cannot be well adapted to wounds of different sizes due to the fixed size.

Based on the practical problems, the light source of the OLED phototherapy band-aid provided by the invention is a modularized component, can be detached at any time and replaced with a new water absorption layer for continuous use, is convenient to carry, saves resources, and can be arbitrarily detached, increased and decreased to adapt to wounds of different sizes.

Disclosure of Invention

The present invention aims to solve at least part of the above problems by providing a novel OLED phototherapy band-aid comprising at least one phototherapy component and at least one pharmacotherapy part. Wherein the phototherapy subassembly is the modularization subassembly, can tear down at any time and change new layer that absorbs water and continue to use, both conveniently carry, resources are saved again, and modularization phototherapy subassembly dismouting, increase and decrease wantonly can adapt to the wound of different shapes and size.

According to one embodiment of the present invention, an OLED phototherapy band-aid is disclosed, comprising: at least one phototherapy component and at least one medication portion;

the at least one phototherapy component comprises at least one OLED light-emitting panel, a power supply device and a shell, wherein the OLED light-emitting panel is electrically connected with the power supply device, and the OLED light-emitting panel and the power supply device are integrated in the shell;

the at least one medicated portion comprises a medical adhesive and a water absorbent layer;

the phototherapy subassembly detachably is fixed on the portion is treated with medicine to the light emitting area orientation of phototherapy subassembly includes the layer that absorbs water.

In this embodiment, the light emitting surface of the phototherapy assembly faces towards the water absorbing layer, for example, when the OLED panel in the phototherapy assembly is double-sided light emitting, for example, a transparent OLED panel, at least one of the light emitting surfaces of the phototherapy assembly faces towards the water absorbing layer.

According to one embodiment of the invention, the water-absorbing layer is made of medical fabric.

According to an embodiment of the invention, the water-absorbing layer is made of medical gauze, medical cotton cloth or medical chemical fiber.

According to one embodiment of the invention, the water absorption layer is coated with a medicine, and the medicine has the effects of diminishing inflammation, stopping bleeding and suppurating.

According to an embodiment of the invention, an area of the water absorption layer is equal to or larger than an effective light emitting area of the phototherapy assembly.

According to an embodiment of the invention, the area of the water absorbing layer is greater than or equal to 110% of the effective light emitting area of the phototherapy assembly.

According to an embodiment of the invention, the area of the water absorbing layer is 130% or more of the effective light emitting area of the phototherapy component.

According to one embodiment of the invention, the water absorbing layer covers at least one effective light emitting area of the OLED light emitting panel.

According to one embodiment of the invention, the water absorbing layer covers all the effective light emitting areas of the OLED light emitting panel.

According to one embodiment of the present invention, wherein the medical adhesive further comprises a protective film for preventing adhesion of an unused adhesive.

According to one embodiment of the invention, wherein the OLED light-emitting panel comprises a substrate, the substrate being a flexible substrate.

According to one embodiment of the invention, wherein the flexible substrate is a thin film glass, plastic, leather or metal film.

According to one embodiment of the invention, the flexible substrate is PET, PEN or PI.

According to one embodiment of the invention, the OLED light-emitting panel comprises an encapsulation layer, and the encapsulation layer is a thin film encapsulation layer.

According to one embodiment of the invention, wherein the OLED light-emitting panel comprises at least one OLED device, the at least one OLED device being a bottom-emitting device, a top-emitting device or a stacked device.

According to an embodiment of the invention, the peak emission wavelength of the OLED device is between 600-1000nm, and/or between 400-500 nm.

According to one embodiment of the invention, wherein the OLED light-emitting panel is pixelated.

According to one embodiment of the invention, wherein the OLED light-emitting panel is pixelated and each pixel is driven independently; the color of light emitted by each pixel is the same or different.

According to one embodiment of the invention, wherein the OLED light-emitting panel comprises at least two pixels, and the at least two pixels emit light of different colors.

According to an embodiment of the invention, at least a portion of the housing in the phototherapy assembly is transparent.

According to an embodiment of the invention, at least a portion of the housing in the phototherapy assembly, which is disposed on a light emitting surface side of the OLED light emitting panel, is transparent.

According to an embodiment of the invention, the housing in the phototherapy assembly is flexible.

According to an embodiment of the invention, wherein the power supply of the phototherapy assembly comprises a power source, a connection circuit and a control switch.

According to an embodiment of the invention, the power source of the phototherapy assembly is selected from button cells or flexible thin film cells.

According to one embodiment of the invention, a plurality of phototherapy assemblies is included.

According to one embodiment of the invention, the shell of the phototherapy component is provided with a limiting structure for assembling and disassembling and/or splicing with each other.

According to an embodiment of the present invention, the housing of the phototherapy assembly further has a coupling device thereon for connecting with each other when being spliced.

According to an embodiment of the invention, the phototherapy assembly is detachably fixed on the medical adhesive plaster.

According to another embodiment of the present invention, there is also disclosed an assembly and a use method of the OLED phototherapy band-aid according to any one of the above embodiments, comprising the following steps:

the method comprises the following steps: providing at least one phototherapy component; the phototherapy component comprises an OLED luminous panel, a power supply device and a shell;

step two: providing at least one medication portion; the medical treatment part comprises a medical adhesive plaster and a water absorption layer;

step three: detachably fixing the phototherapy component on the medical treatment part, and enabling the light emitting surface of the phototherapy component to face the water absorption layer;

step four: sticking the OLED phototherapy band-aid onto human skin by using a medical adhesive tape, and enabling the water absorption layer to be in contact with an area to be treated;

in the above steps, step one and step two may be performed in any order.

According to an embodiment of the present invention, the phototherapy units have a position-limiting structure and are detachably and/or mutually connected, and when a plurality of phototherapy units are used, the step of connecting and detachably fixing the phototherapy units to the medication portion is included in the third step.

According to an embodiment of the invention, the phototherapy component in the step one is newly prepared or detached from the used OLED phototherapy band-aid.

The novel OLED phototherapy band-aid comprises at least one phototherapy component and at least one drug therapy part. Wherein the phototherapy subassembly is the modularization subassembly, can tear down at any time and change new layer that absorbs water and continue to use, both conveniently carry, resources are saved again, and modularization phototherapy subassembly dismouting, increase and decrease wantonly can adapt to the wound of different shapes and size.

Drawings

Fig. 1 a-1 d are schematic cross-sectional views of an OLED light-emitting panel.

Fig. 2 a-2 d are schematic views of OLED device structures.

Fig. 3a-3c are schematic views of OLED light-emitting panel structures.

Fig. 4a is an appearance schematic diagram of an OLED phototherapy band-aid disclosed in the present invention.

Fig. 4b is a schematic diagram of the OLED phototherapy band-aid with separate phototherapy components and drug therapy portions.

Fig. 4c is an enlarged schematic view of a portion a of the OLED phototherapy band-aid disclosed in the present invention.

Fig. 4d is a schematic diagram of the structure of the phototherapy assembly.

Fig. 5a-5h are schematic diagrams illustrating an assembly and a use method of an OLED phototherapy band-aid disclosed in the present invention.

Fig. 6 a-6 b are schematic views of another OLED phototherapy band-aid disclosed in the present invention.

Fig. 7a-7d are schematic views of another OLED phototherapy band-aid disclosed in the present invention.

Fig. 8 a-8 h are schematic diagrams illustrating the assembly and use of another OLED phototherapy band-aid disclosed in the present invention.

Fig. 9 a-9 c are schematic views of another OLED phototherapy band-aid disclosed in the present invention.

Fig. 10 a-10 e are design layouts of an OLED light emitting panel.

Fig. 11 a-11 c are schematic diagrams of an OLED phototherapy band-aid disclosed in the present invention.

Fig. 12 a-12 c are schematic orthographic views of a plurality of phototherapy modules assembled together.

Detailed Description

As used herein, "top" means furthest from the substrate, and "bottom" means closest to the substrate. In the case where the first layer is described as being "disposed on" the second layer, the first layer is disposed farther from the substrate. Conversely, where a first layer is described as being "disposed" under a second layer, the first layer is disposed closer to the substrate. Other layers may be present between the first and second layers, unless it is specified that the first layer is "in contact with" the second layer. For example, a cathode can be described as being "disposed on" an anode even though various organic layers are present between the cathode and the anode.

As used herein, the term "OLED device" includes an anode layer, a cathode layer, one or more organic layers disposed between the anode layer and the cathode layer. An "OLED device" can be bottom emitting, i.e. from the substrate side, or top emitting, i.e. from the encapsulation layer side, or a transparent device, i.e. from both the substrate and the encapsulation side.

As used herein, the term "OLED light emitting panel" includes a substrate, an anode layer, a cathode layer, one or more organic layers disposed between the anode layer and the cathode layer, an encapsulation layer, and at least one anode contact and at least one cathode contact extending outside of the encapsulation layer for external access.

As used herein, the term "module" refers to an electronic device having only one set of external electrical drives.

As used herein, the term "encapsulation layer" may be a thin film encapsulation having a thickness of less than 100 microns, which includes disposing one or more thin films directly onto the device, or may also be a cover glass (cover glass) adhered to a substrate.

As used herein, the term "flexible printed circuit" (FPC) refers to any flexible substrate coated with any one or combination of the following, including but not limited to: conductive lines, resistors, capacitors, inductors, transistors, micro-electro-mechanical systems (MEMS), and the like. The flexible substrate of the flexible printed circuit may be plastic, thin glass, thin metal foil coated with an insulating layer, fabric, leather, paper, etc. A flexible printed circuit board is typically less than 1mm thick, more preferably less than 0.7mm thick.

As used herein, the term "light extraction layer" may refer to a light diffusing film, or other microstructure having light extraction effects, or a thin film coating having light outcoupling effects. The light extraction layer can be disposed on the substrate surface of the OLED, or can be in other suitable locations, such as between the substrate and the anode, or between the organic layer and the cathode, between the cathode and the encapsulation layer, on the surface of the encapsulation layer, and so forth.

As used herein, the term "independently driven" refers to the operating points of two or more light-emitting pixels being separately controlled. Although the pixels may be connected to the same controller or power line, there may be circuitry to divide the drive path and power each pixel without affecting the other. As used herein, a "light-emitting pixel" can be either an OLED device or an OLED light-emitting panel.

As used herein, the term "medicated portion" refers to a portion having a medical function comprising a medical adhesive and a water absorbent layer. As used herein, the term "water-absorbing layer" is a film layer made of a suitable medical fabric, and may be, for example, a film layer made of any material having a water-absorbing effect, such as medical gauze, medical cotton, medical chemical fiber, and the like. Preferably, the water-absorbing layer can be coated with medicine with antiinflammatory, hemostatic, and suppurative effects.

As used herein, the term "effective light-emitting area" refers to the portion of the planar area where the anode, organic layer, and cathode are co-incident, excluding light extraction effects; after the light source is assembled into the housing, the "effective light-emitting area" refers to the light-emitting area emitted by the light source that is able to pass out of the housing for acceptance by an observer.

As used herein, the term "light emitting face" refers to the side of the light source that emits light, e.g., if the light source comprises a bottom-emitting OLED light emitting panel, the "light emitting face" comprises the side of the substrate away from the anode, and if a top-emitting device, the "light emitting face" comprises the side of the encapsulation layer away from the cathode.

As used herein, the term "stacked device" refers to a device structure having a plurality of light emitting layers between a pair of cathode and anode electrodes, each light emitting layer having its own independent hole transport layer and electron transport layer, each light emitting layer and its associated hole transport layer and electron transport layer constituting one light emitting unit, the light emitting units being connected with each other by a charge generation layer, and a device having such a plurality of light emitting units is a "stacked device".

As used herein, the term "orthographic projection of the housing" refers to an orthographic projection of the housing taken with a plane parallel to the upper cover of the housing as a projection plane.

A typical single layer OLED device structure is shown in fig. 2 a. The OLED device 100 includes, among other things, an anode layer 101, a Hole Injection Layer (HIL)102, a Hole Transport Layer (HTL)103, an Electron Blocking Layer (EBL)104, an emission layer (EML)105, a Hole Blocking Layer (HBL)106, an Electron Transport Layer (ETL)107, an Electron Injection Layer (EIL)108, and a cathode layer 109. The light-emitting layer 105 typically further comprises at least one host material and at least one light-emitting material, and the electron-blocking layer 104 and the hole-blocking layer 106 are optional layers. The hole injection layer 102 may be a single layer of material, such as the commonly used HAT-CN; the hole injection layer 102 may also be a hole transport material doped with a certain proportion of a p-type conductivity dopant material. A single layer OLED device may also comprise multiple light emitting layers, and the OLED device 110 shown in fig. 2b may comprise one red light emitting layer 105a and one blue light emitting layer 105 b. The red light emitting layer 105a can be implemented by doping a red light host material with a red light emitting material; similarly, the blue light emitting layer 105b may be implemented by doping a blue light emitting material with a blue host material. Note that although OLED device 110 has two light emitting layers, it is still considered a single layer device because it has only one set of transport material systems. An adjusting layer can be added between the two light-emitting layers to control the position of the composite light-emitting region and realize color change caused by the drift of the light-emitting region under different electric driving. For example, at low current densities OLEDs may emit predominantly red light, promoting wound healing, and at high current densities OLEDs may emit blue light, providing germicidal and anti-inflammatory effects. It is of course also possible to prepare a single-layer device with three light-emitting layers on top of the OLED device 110, for example by successively superimposing a red, a green and a blue light-emitting layer. Techniques for fabricating OLEDs using single layer device structures are well known to those skilled in the art and are not described in detail herein.

The OLED device can also be implemented in a stacked structure, and an example of the structure of a stacked OLED device 200 is shown in fig. 2c, which includes a first light emitting unit 201 and a second light emitting unit 202, wherein the

light emitting units

201 and 202 include organic layers similar to those of the OLED device 100, and the two light emitting units are connected by a charge generation layer 111, and an anode 101 and a cathode 109 are respectively disposed at the bottom and the top of the stacked OLED device 200. The charge generation layer 111 may further include an n-type material layer and a p-type material layer to conduct electrons and holes, respectively. The charge generation layer may further comprise a buffer layer material, and reference may be made to patent application CN 2019109871570. The stacked OLED device shown in fig. 2c is a dual-cell structure, where the

light emitting cells

201 and 202 can be two red light emitting cells, and the stacked device is advantageous for improving current efficiency and device lifetime, and is generally a structure commonly used in OLED lighting. Similarly, three red light emitting units can also be stacked, as shown in the three-layer stacked OLED device 210 in fig. 2d, which comprises a first light emitting unit 201, a second light emitting unit 202 and a third light emitting unit 203, connected with charge generation layers 111 and 121 between them, with an anode 101 and a cathode 109 disposed across the device. Of course, each light emitting unit can also emit light with different colors, such as the first light emitting unit emitting red light with a wavelength between 610-640 nm, the second light emitting unit emitting red light with a wavelength between 640-700nm, and the third light emitting unit emitting near infrared light with a wavelength above 700 nm. Techniques for using stacked device structures are well known to those skilled in the art and will not be described in detail herein.

On the basis of the above-described device, the cross-section of an OLED light-emitting panel is schematically shown in fig. 1 a. The OLED light emitting panel 300 includes a substrate 301, an OLED device 310, a pair of contact electrodes 303 electrically connected to the OLED device 310, an encapsulation layer 302 exposing the contact electrodes 303, and a bonding structure 304 connecting the pair of contact electrodes 303 to an external driving circuit. The substrate 301 may be rigid such as glass, preferably flexible, including but not limited to ultra-thin flexible glass, PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PI (Polyimide), and the like. In particular, the substrate 301 may be a material (e.g., Polyimide material) that is coated on the supporting substrate in the form of a solution in advance, cured, and planarized for device fabrication. After the device is prepared, the device is peeled off from the supporting base plate by using a laser and is transferred to other flexible substrates according to requirements. OLED device 310 can be a bottom emitting device or a top emitting device, with a top emitting device being preferred because of its higher luminous efficiency. OLED device 310 can be a single layer structure or a stacked layer structure, with a stacked layer structure being preferred because it has a longer lifetime at the same brightness and because a thicker film layer is beneficial for increasing production yield. The organic material in OLED device 310 may be formed by evaporation in a vacuum chamber by thermal evaporation, or may be formed partially or even entirely using a solution process, including but not limited to ink jet printing (ink jet printing), spin coating, organic vapor spray printing (OVJP), and the like. The encapsulation layer 302 may be glass adhered to the device by UV curable adhesive, preferably a thin film encapsulation layer, generally having a thickness of 10 μm or more, such as a single inorganic layer, or a thin film organic-inorganic alternating multilayer structure, and is formed by PECVD, ALD, printing, spin coating, etc. If both the substrate 301 and the encapsulation layer 302 are flexible, the entire OLED light emitting panel is flexible; the contact electrode 303 may comprise at least one anode contact and one cathode contact. A front cover film 305 may be added to the above-described OLED light-emitting panel as shown in fig. 1 b. The front cover film 305 may be a Flexible Printed Circuit (FPC) board on which a pre-designed circuit is printed and electrically connected to the OLED device 310 through the adhesive structure 304. In another alternative, the adhesive structure 304 may be an FPC frame and the front cover film 305 may be a sheet of plastic film to provide mechanical support. A detailed description of the use of an FPC board to drive an OLED light-emitting panel can be found in chinese patent application CN201810572632.3, which is incorporated by reference in its entirety and will not be described herein. The front cover film 305 may also include a light extraction layer. When OLED device 310 is top-emitting, front cover film 305 is transparent in the light-emitting area. The front cover film 305 may be a combination of the above. Additional thin film encapsulation layers 306 may be applied to one or both sides of the substrate 301 as shown in fig. 1 c. The front cover film may also be coated with an additional thin film encapsulation layer 306, but is not shown in this figure. In fig. 1d, a back cover film 307 is overlaid onto the substrate 301. The back cover film 307 may be used for mechanical support. When the OLED is a bottom-emitting device, the back cover film 307 may be a light extraction layer and transparent. The back cover film 307 may be a combination of the above. Such an OLED light-emitting panel is one of the basic constituent elements in the present invention.

The OLED light source used in the adhesive bandage can emit light with the peak wavelength of 600-1000nm, preferably light with the peak wavelength of 630-970nm, more preferably light with the peak wavelength of 640-700nm, and the adhesive bandage with the red-infrared band and the near-infrared band can accelerate wound healing. In other embodiments, light with a peak wavelength between 360-500nm, which is mainly blue light, can also be used to achieve the effects of sterilization and anti-inflammation. It is also possible to generate a plurality of different wavelength bands of light on a patch of a band-aid, which can be done in several ways. The first is to design a pixelized layout on the same OLED light-emitting panel and then drive each pixel independently, or group pixels and then drive different groups independently. The pixels here typically have a light-emitting area in the order of millimetres, i.e. a minimum dimension of more than 1mm, preferably more than 5 mm. For example, an OLED light emitting panel 500 shown in fig. 3a may include an OLED substrate 501 on which a series of OLED devices 502 are patterned, and these devices share the same thin film encapsulation layer 503, in this case, each light emitting unit is an OLED device, and the whole OLED light emitting panel is a light source. In this case, the metal wires may be arranged on the panel at the same time of preparing the anode or the cathode for electrically connecting the OLED devices 502, and the method of the metal wires is well known in the art and will not be described herein. Different OLED devices are controlled through external electric drive, so that different devices can emit light with different colors, or the same device works under different currents, and multiple colors are realized. A variation of this is an OLED light emitting panel 510 as shown in fig. 3b comprising an OLED substrate 501, a series of OLED devices 502, but each device enjoys a separate encapsulating layer 513, and preferably a thin film encapsulating layer. At this time, the different OLED devices 502 can be connected through metal wiring, and can also be electrically connected through an FPC circuit board, thereby greatly improving the possibility of conductivity and circuit complexity. Also, a single or multiple OLED devices 502 can be independently driven through these electrical connections. Under the two conditions, if light with different colors is emitted, different device structures can be evaporated on different OLED devices by using a metal mask, and particularly, the material of a light emitting layer is changed; it is also possible to refer to the structures described in applications CN2020100639006 and CN2020100571291, all of which use the same structure of independent unit multiple light emitting layers, with the variation of color being achieved by the movement of the recombination zone at different operating points. The OLED substrate 501 in both of the above schemes may be rigid or flexible, preferably flexible. Alternatively, individual OLED light emitting panels may be arrayed as shown in fig. 3c, where each light emitting panel comprises an individual substrate 521, an OLED device 502 and an individual encapsulating layer 513. The advantage of this arrangement is that a non-flexible OLED light-emitting panel and/or a non-flexible encapsulation layer can be selected, and the light source formed into an array can still have a certain flexibility as long as the area is small enough. The individual OLED light emitting panels may be cut from the same motherboard, for example, using the same individual unit multi-light emitting layer structure, or may be reassembled by selecting different structures of devices from different motherboards. The scheme has the advantages that the device can be screened, the yield is improved, and the color diversity of products is also improved. The independent light-emitting panel shown in fig. 3c can be arranged and combined through FPC or front and back cover films, etc. to form a lattice physically connected with each other as required, and it is specifically referred to the method disclosed in CN208750423U and is not in the scope of the present invention. Also, the panels may be independently controlled to apply different operating currents. The array arrangement can not only realize multicolor luminescence, but also realize zone control, such as only treating wound parts. The local illumination can further reduce the power consumption and save energy. The OLED band-aid utilizing the pixelation or panel combination mode is particularly suitable for large-area wound healing scenes. For example, for the treatment of a patient with large-area burn, on one hand, the rapid healing of the wound is promoted, and on the other hand, the bacterial infection is prevented, and at the moment, multiband alternating treatment can be adopted, sterilization is carried out by using blue light, and the wound healing is stimulated by using red light.

We divided a piece of OLED phototherapy band-aid into two parts, medication and phototherapy. The medicinal part comprises water absorbing layer, which is made of gauze, medical cotton cloth, medical chemical fiber, etc., preferably, the water absorbing layer is coated with medicine with antiinflammatory, hemostatic, and suppurative effects, such as surfactant medicine with antibacterial effect, such as benzalkonium chloride. The medicated part also comprises a medical adhesive plaster, which is usually provided with a protective film to prevent adhesion, and the protective film can be torn off and adhered when in use. In some embodiments, the phototherapy subassembly is hugged closely between medical adhesive tape and the layer that absorbs water, and the phototherapy subassembly divides into casing and light source part again, and the light source part comprises at least one OLED luminescent panel and power supply unit, and wherein the casing divide into upper cover and inferior valve two parts, and the casing has integrateed the light source part, and wherein the upper cover is transparent or openwork in the position of the luminous region of corresponding light source so that light passes through. The upper cover can be opened to replace the components of the light source part. When the water absorption layer is used, the control switch of the light source is turned on, the light source emits light, and the light penetrates through the water absorption layer and acts on a wound of a human body to realize light therapy. If the medicine is further combined, the healing of the wound can be better promoted.

Fig. 4 a-4 d illustrate an example of a phototherapy effective adhesive bandage 600 from multiple angles, and fig. 4a illustrates an appearance of the adhesive bandage 600 in use, which includes a medication portion 610 and a detachable self-contained phototherapy assembly 620. Fig. 4b illustrates the state of the band-aid with the medication portion 610 and the phototherapy assembly 620 separated from each other, and the medication portion 610 and the phototherapy assembly 620 are combined for use, wherein the portion marked by the oval dotted line is indicated by a. Fig. 4c shows an enlarged view of part a of the adhesive bandage a, which comprises a medical adhesive tape 611, an upper protective film 612, a water-absorbing layer and/or drug patch 613 and a lower protective film 614. Wherein the medical adhesive tape 611 is divided into two parts 6111 and 6112; the two sides of the upper protective film 612 are smooth, so that the upper protective film 612 can be conveniently torn off from the medical adhesive tape, and the upper protective film 612 is folded in a z shape and used for separating the overlapped parts of the medical adhesive tapes 6111 and 6112 to avoid mutual adhesion; the water absorbing layer and/or the drug patch 613 is/are adhered to the bottom of the upper protective film 612, and the two ends are respectively fixed on the medical adhesive tapes 6111 and 6112; the water absorbing layer and/or the drug patch 613 may be gauze, or gauze with a drug applied thereto, and particularly, the area of the water absorbing layer and/or the drug patch 612 is greater than or equal to the effective light emitting area of the phototherapy assembly 620, preferably, greater than or equal to 110% of the effective light emitting area of the phototherapy assembly 620, and more preferably, greater than or equal to 130% of the effective light emitting area of the phototherapy assembly 620; the lower protective film 614 is divided into two parts 6141 and 6142, covers the water absorption layer and/or the drug patch 613, is adhered to two ends of the medical adhesive tape 611, and is used for keeping the water absorption layer and/or the drug patch clean when not in use, the lower protective film 614 in fig. 4c is only an example, and other forms of protective films and designs thereof can be used. Fig. 4d shows an exploded view of the phototherapy assembly 620, which comprises a lower housing 621, an upper cover 622, an OLED lighting panel 623, a power supply device 624, wherein the power supply device 624 includes a power supply 6241 and a power switch 6242, wherein the outer side of the lower housing 621 has a limiting protrusion 6211 for limiting the adhering position of the medical adhesive tape 611 and a limiting concave 6212 for adhering the medical adhesive tape, such a structure design facilitates the assembly, disassembly and/or assembly of the phototherapy assembly 620, of course, the limiting structure is not necessary as long as the medical adhesive tape can fix the phototherapy assembly; the upper cover 622 can be a transparent part, or an opaque part but is hollowed out in a light-transmitting area, and the transparent part is preferred; the power switch 6242 may be located on the side surface of the lower case 621, such as the 6214 position, or on the bottom surface of the lower case 621, such as the 6212 surface. The phototherapy assembly 620 is assembled as follows: the power supply unit 624 is installed inside the lower case 621, the power switch 6242 is installed inside the lower case 621, the light emitting surface of the OLED light emitting panel 623 faces the upper cover 622, the non-light emitting surface faces the power supply unit 624, and is installed in the lower case 621, the upper cover 622 is installed on the side close to the light emitting surface of the OLED light emitting panel 623 and structurally coupled with the lower case 621, wherein the upper cover 622 is made of transparent material. The light emitting surface of the phototherapy assembly 620 is the light emitting surface of the OLED light emitting panel 623. The power supply 624 may include a power supply, a control circuit, a switch, and other electronic components, for example, in fig. 4d, the power supply 6241 is a button battery, a negative electrode of the button battery is connected to a cathode of the OLED light-emitting panel 623 through a wire, one end of the power supply 6242 is connected to an anode of the power supply 6241 through a wire, and the other end of the power supply 6242 is connected to an anode of the OLED light-emitting panel 623 through a wire to form a complete circuit (a circuit is not shown in the figure). Note that although specific electrical connections are not shown, electrical connections to the various electronic components are well known to those skilled in the art, including but not limited to leads, FPC circuitry, wireless controls, etc. The electrical connections can be integrated on the inner surface of the lower shell without affecting the stitching and aesthetics of the phototherapy assembly. The power source 6241 may be a battery device such as a film battery or a button battery, or may be a circuit system having a wireless charging function.

The assembly and use method of the OLED phototherapy band-aid mainly comprises three parts: one is to provide the phototherapy component and the medication component, which are the components of the OLED phototherapy band-aid, wherein the phototherapy component may be completely prepared or detached from the OLED phototherapy band-aid after use, and if the phototherapy component is the latter, the corresponding cleaning and disinfection treatment may be required in consideration of the hygiene problem, and the medication component should be new in consideration of the hygiene problem; the phototherapy component and the pharmacotherapy part are detachably fixed together, and the light emitting surface of the phototherapy component faces the water absorbing layer; the OLED phototherapy band-aid is assembled at the moment; and finally, the assembled OLED phototherapy band-aid is pasted on the skin area to be treated of the human body, and the control switch of the phototherapy assembly is turned on to achieve the phototherapy effect while the drug therapy is carried out. When the area of the skin area to be treated is large, the phototherapy assemblies can be reasonably spliced according to the shape and the size of the skin area to be treated, and the spliced phototherapy assemblies and the pharmacotherapy part with the proper size are detachably fixed together, so that the OLED phototherapy band-aid with the proper size and the proper shape is assembled. The assembly and the application method of the OLED phototherapy band-aid disclosed in the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 5a-5h are schematic diagrams illustrating the assembly and use method of the adhesive bandage: as shown in fig. 5a, pulling up the protective film 612 causes one end of each of the

medical tapes

6111 and 6112 to be exposed and separated; as shown in fig. 5b, one end of the

medical tapes

6111 and 6112 is pulled up in turn so that the side of the water-absorbent layer 613 which does not contact the wound is exposed; as shown in fig. 5c, the phototherapy unit 620 is placed with the upper cover 622 facing downward and applied on the side of the water-absorbing layer 613 not contacting the wound; as shown in fig. 5d, one end of the medical adhesive plaster 6112 is adhered to the concave position-limiting surface 6212 on the lower shell 621 of the phototherapy component and is located at the inner side of the position-limiting protrusion 6211, so as to primarily fix the phototherapy component 620; as shown in fig. 5e, one end of the medical adhesive plaster 6111 is adhered to the concave position-limiting surface 6212 on the lower shell 621 of the phototherapy component and is located inside the position-limiting protrusion 6211, so that the phototherapy component 620 is fixed between the medical adhesive tape 611 and the water-absorbing layer 613, and the light-emitting surface of the phototherapy component 620 faces the water-absorbing layer 613; as shown in fig. 5f and 5g, the lower

protective films

6141 and 6142 are torn downward; as shown in fig. 5h, the absorbent layer is placed against the wound, and then the two ends of the medical adhesive tape are adhered to the skin to complete wearing, wherein the ring wearing is only an example in the figure, and the medical adhesive tape can also be relatively flatly applied to the surface of the skin. Note that the protective film 612 and the

medical tapes

6111 and 6112 shown in fig. 4c and fig. 5a-5g are only schematic, and different shapes, materials, and assembly structures can be used. The medical tape 611 and the water absorbing layer 613 are generally disposable, while the phototherapy assembly 620 can be used many times and the service life can be extended by replacing the internal battery or even the OLED lighting panel. The phototherapy assembly 620 can be completely detached from between the medical adhesive fabric 611 and the water-absorbing layer 613, and thenThe medical adhesive plaster is arranged on a new medical adhesive plaster and a new water absorption layer, thereby reducing the cost and effectively utilizing resources. Fig. 6a and 6b show the derivative applications of the OLED phototherapy band-aid, which can be combined in different ways according to different wound conditions. As shown in fig. 6a, a plurality of phototherapy components, such as

phototherapy components

620 and 630, may be added to the medical adhesive plaster 610, the

phototherapy components

620 and 630 may have a coupling structure therebetween to help fixing (not shown), only the extension of the phototherapy components in one dimension is shown in the drawing, but the phototherapy components may extend in two dimensions at the same time to form a larger area, which only needs to cooperate with the medical adhesive plaster of the corresponding area, as shown in fig. 6b, the medical adhesive plaster 610 may bind the four

phototherapy components

620, 630, 640, and 650 into the adhesive plaster 600¹And similar depictions 600¹、600²、600³、600⁴The phototherapy band-aid with larger area is formed by combining the phototherapy components in parallel, and different colors of light can be emitted by different phototherapy components. In other embodiments, the pixilated or panel combinations shown in figures 3a-3c may also be used to implement multiband therapy in a single phototherapy assembly.

Figures 7a-7d illustrate examples of another phototherapy effective adhesive bandage 700 from multiple angles, and figure 7a illustrates an appearance of the adhesive bandage 700 in use, including a medication portion 710 and a detachable self-contained phototherapy assembly 720. Fig. 7B illustrates the separated placement of the band-aid medication portion 710 and the phototherapy unit 720, wherein the portion marked by the oval dashed line is indicated by B. Fig. 7c shows an enlarged view of a portion B of the adhesive bandage, which includes a medical adhesive plaster 711, an upper protective film 712, a water absorbent layer 713, and a lower protective film 714. Wherein the medical adhesive plaster 711 is divided into two

parts

7111 and 7112; the two sides of the upper protective film 712 are smooth, so that the upper protective film 712 can be conveniently torn off from the medical adhesive tape, and the upper protective film 712 is folded in a Z shape and used for separating the overlapped parts of the medical

adhesive tapes

7111 and 7112 to avoid mutual adhesion; the water absorbing layer 713 is adhered to the bottom of the upper protective film 712, and both ends of the water absorbing layer are respectively adhered to the medical

adhesive tapes

7111 and 7112; the lower protective film 714 is divided into two

parts

7141 and 7142, covers the water absorbing layer 713 and is adhered to two ends of the medical adhesive tape 711, which is used for protecting the water absorbing layer from being cleaned when not in use, the lower protective film 714 is only an example in fig. 7c, and other forms of protective films and designs thereof can be used. Fig. 7d shows an exploded view of the phototherapy module 720, which includes a housing 721, a power supply 723, and an OLED lighting panel 724, wherein the housing 721 is a flexible sealed bag with an opening on one side, and is made of a flexible transparent material, and includes an opening position 7211 and a limit structure 7212, the limit structure 7212 can be implemented by extrusion, blow molding, or vacuum forming, and it should be noted that the limit structure is not necessary here as long as a medical adhesive tape can fix the phototherapy module; the power supply unit 723 further comprises a control switch 7231, the control switch 7231 can be a membrane switch, the membrane switch can be an operating system integrating a key function, an indicating element and an instrument panel, and the operating system comprises four parts, namely a panel, an upper circuit, an isolating layer and a lower circuit; the power supply 723 further comprises a power supply 7232, the power supply 7232 can be a flexible thin film battery, the OLED panel 724 can be a one-piece flexible light-emitting panel, or a series of independently driven OLED light-emitting devices arranged in an array as shown in fig. 3c, preferably a flexible light-emitting panel using a flexible substrate and a thin film package. When the control switch 7231 is pressed, the contact of the upper circuit is deformed downwards and is contacted with the polar plate of the lower circuit, after the finger is released, the contact of the upper circuit is rebounded, the circuit is disconnected, and the loop triggers a signal, so that the switch control is realized. The phototherapy assembly 720 sequentially stacks and assembles the control switch 7231, the power supply 7232 and the OLED lighting panel 724 by electrical connection in a top-to-bottom order as shown in fig. 7d, and then integrally places the stack inside the housing 721 and seals the opening. Note that the assembly sequence of the control switch 7231, the power supply 7232 and the OLED light emitting panel 724 in fig. 7d is merely illustrative as long as the three are electrically connected and form a closed loop.

Fig. 8a to 8h are schematic views illustrating an assembly and use method of the adhesive bandage: as shown in fig. 8a, the protective film 712 is pulled up to expose and separate one end of each of the

medical tapes

7111 and 7112; as shown in fig. 8b, one end of the

medical tapes

7111 and 7112 is sequentially pulled up to expose the side of the water absorbent layer 713 not contacting the wound; as shown in fig. 8c, the light emitting side of the housing 721 of the phototherapy unit 720 is applied downwards to the side of the water absorbent layer 713 not contacting the wound; as shown in fig. 8d, one end of a medical adhesive 7112 is adhered to the non-luminous side of the housing 721 of the phototherapy module and is primarily fixed on the medicated portion 710 by a stopper 7212; as shown in fig. 8e, one end of a medical adhesive tape 7111 is adhered to the non-luminous side of the shell 721 of the phototherapy assembly and fixed by a limiting structure 7212, so that the phototherapy assembly 720 is fixed between the medical adhesive tape 711 and the water absorption layer 713; as shown in fig. 8f and 8g, the lower

protective films

7141 and 7142 are torn downward; as shown in fig. 8h, the water-absorbing layer 713 is facing to the wound, and then the two ends of the medical adhesive plaster 711 are adhered to the skin for treatment, similarly, the ring-shaped medical adhesive plaster is only shown here, and the medical adhesive plaster can be relatively flatly adhered to the surface of the skin of the human body. Because the medication portion 710 and the phototherapy assembly 720 are both flexible members, they are lighter and thinner and better fit the wound.

Fig. 9a to 9c illustrate another example of a band-aid 800 having phototherapy effect, fig. 9a illustrates an appearance of the band-aid 800 when in use, fig. 9b illustrates a state of the band-aid when in separated placement, which includes a medication portion 810 and a phototherapy component 820, wherein the medication portion 810 includes a medical adhesive 811, a water absorbing layer 812, a protective film 813 and a protective film 814, and the medication portion 810 and the phototherapy component 820 can be separated when not in use; fig. 9c shows an exploded view of the adhesive bandage during use, which comprises, from top to bottom, a medical adhesive tape 811, a detachable independent phototherapy component 820, a water absorbing layer 812, and

protective films

813 and 814, wherein the phototherapy component 820 has a limiting structure 8211, and it is noted that the limiting structure is not essential. In this embodiment, the water absorbent layer 812 is not previously integrated with the medical tape 811. In use, the phototherapy module 820 is detachably fixed in the medical adhesive 811, in a manner similar to that shown in fig. 5a-5 h; then, the wound is covered or wrapped with the separately provided water absorbent layer 812, and then the

protective films

813 and 814 are peeled off, and the portion to be treated containing the medical phototherapy module 820 is applied on the water absorbent layer 812, and then fixed with the medical adhesive tape 811 in sequence. The absorbent layer 812 may be gauze or gauze coated with a drug. In another embodiment, the water absorption layer 812 may be fixed on the light emitting surface side of the phototherapy assembly 820, the phototherapy assembly 820 integrated with the water absorption layer 812 may be detachably fixed on the medical adhesive plaster 811, and finally the whole system may be applied to the wound. The phototherapy band-aid is especially suitable for treating large-area wounds.

Next, we prepared an example of an OLED phototherapy band-aid.

Fig. 10a to 10e are design layouts of an OLED lighting panel in an embodiment, which includes the anode layer 901 of fig. 10a, the organic layer 902 of fig. 10b, the cathode layer 903 of fig. 10c, and the encapsulation layer 904 of fig. 10 d. Fig. 10e shows the overall layout effect after the layers are stacked, where the overlapped area 905 of the anode layer 901, the organic layer 902, and the cathode layer 903 is an effective light-emitting area, the area a is its cathode electrical contact, and the area B is its anode electrical contact.

We prepared a single layer red OLED light emitting panel according to the above scheme. The device comprises a layer coated on a glass substrate according to the pattern of FIG. 10a

Specifically, the ITO layer of (1) as the anode layer 101 comprises

A thick Hole Injection Layer (HIL)102 of compound HI, one layer comprising

A Hole Transport Layer (HTL)103 of compound HT, one layer comprising

Electron Blocking Layer (EBL)104 of compound EB of thickness, one layer

The thick light-emitting layer (EML)105 contains a red host compound RH and a red light-emitting material (compound RD) in a weight ratio of 98: 2, a layer comprises

Hole Blocking Layer (HBL)106 of Compound HB, one layer

The thick Electron Transport Layer (ETL)107 comprises compound ET doped with 60% 8-hydroxyquinoline-Lithium (LiQ), and finally

LiQ as an Electron Injection Layer (EIL)108 in thickness and evaporated as per FIG. 10c

Aluminum of thickness was used as cathode 109 and all organic layers were prepared as per fig. 10 b. All the organic layers and the cathode layer are in a vacuum environment

Evaporated and encapsulated with a 0.7mm thick glass cover slip in a nitrogen atmosphere according to fig. 10d, the encapsulating glue being cured with UV light. The structures of compound HI, compound HT, compound EB, compound RH, compound RD, compound HB, and compound ET are shown below:

referring to the design of the adhesive bandage 800 of fig. 9a to 9c, we prepared an OLED phototherapy adhesive bandage, whose substance is shown in fig. 11a, and it includes a protective film 1001, a water absorbing layer (here, medical gauze) 1002, a phototherapy component 1003, and a medical adhesive plaster 1004, where the protective film 1001 is attached to the medical adhesive plaster 1004 as a whole, and when in use, the protective film 1001 in the middle is torn to expose the medical adhesive plaster 1004 partially, one side of the phototherapy component 1003 away from the light emitting surface is attached to the medical adhesive plaster 1004, and then the water absorbing layer 1002 is attached to one side of the light emitting surface of the phototherapy component 1003. Fig. 11b and 11c show the OLED phototherapy band-aidThe phototherapy unit 1003 comprises a lower housing 10031 (here, a transparent plastic part), an upper cover 10032 (here, a transparent plastic part), a power supply device 10033, a red OLED lighting panel 10034 obtained by the above-mentioned preparation, and a control switch 10035, wherein the effective light emitting area of the OLED lighting panel 10034 is 81mm²The power supply device 10033 is a button battery with a rated voltage of 3 v. The OLED phototherapy component emits red light with peak wavelength of 615nm, color coordinate of (0.680, 0.319), and brightness of 55cd/cm at 3V². When the band-aid with the phototherapy function is used, a user only needs to apply the band-aid to a wound like a common band-aid, and the OLED light-emitting panel emits red light to act on the wound by turning on the control switch. The OLED phototherapy band-aid is small and exquisite like a common band-aid and convenient to carry, can accelerate wound healing, and can be continuously used by replacing a medical treatment part. Compared with other phototherapy band-aids, the OLED phototherapy band-aid can be conveniently disassembled and assembled for repeated use, saves resources, reduces cost, and can treat wounds of different sizes by increasing the number of the phototherapy components.

In addition, the shape of the housing of the phototherapy assembly described in the present invention is not limited to the shape shown in fig. 4d, but the shape may be a shape that can be spliced, for example, the orthographic projection of the housing may be a regular or irregular polygon; in view of convenience in processing, it is preferable that the orthographic projection of the housing may be a regular polygon, for example, as shown in fig. 12a to 12c, the orthographic projection of the housing may be a triangle, a quadrangle, a hexagon, or the like. The phototherapy assembly described in the present invention can be assembled and spliced arbitrarily to accommodate different shapes and sizes of skin in the area to be treated.

It should be understood that the various embodiments described herein are illustrative only and are not intended to limit the scope of the invention. Thus, the invention as claimed may include variations from the specific embodiments and preferred embodiments described herein, as will be apparent to those skilled in the art. Many of the materials and structures described herein may be substituted with other materials and structures without departing from the spirit of the present invention. It should be understood that various theories as to why the invention works are not intended to be limiting.

Claims

1. An OLED phototherapy band aid comprising: at least one phototherapy component and at least one medication portion;

the at least one phototherapy assembly comprises at least one OLED light emitting panel, a power supply device and a shell; the OLED light-emitting panel is electrically connected with the power supply device, and the OLED light-emitting panel and the power supply device are integrated in the shell;

2. The OLED phototherapy band-aid of claim 1, wherein the water-absorbing layer is composed of medical fabric; preferably, the water-absorbing layer is coated with a drug.

3. The OLED phototherapy band-aid of claim 1, wherein an area of the water absorbing layer is equal to or greater than an effective light emitting area of the phototherapy assembly; preferably, the area of the water absorbing layer is greater than or equal to 110% of the effective light emitting area of the phototherapy assembly; more preferably, the area of the water absorbing layer is equal to or greater than 130% of the effective light emitting area of the phototherapy assembly.

4. The OLED phototherapy woundplast of claim 2 or 3, wherein the water absorbing layer covers an effective light emitting area of at least one OLED light emitting panel; preferably, the water absorbing layer covers all the light emitting areas of the OLED light emitting panel.

5. The OLED phototherapy band-aid of claim 1, wherein the medical tape further comprises a protective film.

6. The OLED phototherapy woundplast of claim 1, wherein the OLED light emitting panel comprises a substrate, the substrate being a flexible substrate; preferably, the flexible substrate is a thin film glass, plastic, leather or metal film; more preferably, the flexible substrate is PET, PEN or PI.

7. The OLED phototherapy woundplast of claim 1, wherein the OLED light emitting panel comprises an encapsulation layer, and the encapsulation layer is a thin film encapsulation layer.

8. The OLED phototherapy band aid of claim 1, wherein the OLED light emitting panel comprises at least one OLED device that is a bottom emitting device, a top emitting device, or a stacked device.

9. The OLED phototherapy band-aid of claim 8, wherein the peak emission wavelength of the OLED device is between 600-1000nm, and/or between 400-500 nm.

10. The OLED phototherapy woundplast of claim 1, wherein the OLED light emitting panel is pixelated; preferably, each pixel is driven independently; more preferably, the OLED light emitting panel includes at least two pixels, and the at least two pixels emit light of different colors.

11. The OLED phototherapy band-aid of claim 1, wherein the housing in the phototherapy assembly has a shape that is stitchable; preferably, the orthographic projection of the shell is a regular pattern; more preferably, the orthographic projection of the housing is triangular, quadrangular or hexagonal.

12. The OLED phototherapy band aid of claim 1, wherein at least a portion of the housing is transparent; preferably, at least a portion of the case disposed on the light emitting surface side of the OLED light emitting panel is transparent.

13. The OLED phototherapy band-aid of claim 1 or 12, wherein the housing in the phototherapy assembly is flexible.

14. The OLED phototherapy band-aid of claim 1, wherein the power supply of the phototherapy assembly comprises a power source, a connection circuit and a control switch; preferably, the power source is selected from a button cell battery or a flexible film battery.

15. The OLED phototherapy band-aid of claim 1, further comprising a plurality of phototherapy components.

16. The OLED phototherapy band-aid of claim 1 or 15, wherein the housing of the phototherapy assembly has a limiting structure for assembling and disassembling and/or splicing with each other; preferably, the shell of the phototherapy component is also provided with a coupling device for connecting with each other when being spliced.

17. The OLED phototherapy band-aid of claim 1, wherein the phototherapy assembly is detachably fixed on a medical tape.

18. A method of assembling and using the OLED phototherapy band-aid of claim 1, comprising the steps of:

the method comprises the following steps: providing at least one phototherapy component; the at least one phototherapy assembly comprises at least one OLED light emitting panel, a power supply device and a shell;

step two: providing at least one medication portion; the at least one medicated portion comprises a medical adhesive and a water absorbent layer;

in the above steps, step one and step two may be performed in any order.

19. The method of assembling and using an OLED phototherapy band-aid of claim 18, wherein the phototherapy units have a position-limiting structure and are detachably connected and/or connected to each other, and when a plurality of phototherapy units are used, the step of connecting and detachably fixing the phototherapy units to the medicated portion is included in the third step.

20. The method of assembling and using an OLED phototherapy woundplast of claim 18 or 19, wherein the phototherapy component in the first step is newly prepared or disassembled from the used OLED phototherapy woundplast.