CN116492133A

CN116492133A - OLED ice compress patch

Info

Publication number: CN116492133A
Application number: CN202210070667.3A
Authority: CN
Inventors: 庞惠卿; 谢梦兰
Original assignee: Beijing Summer Sprout Technology Co Ltd
Current assignee: Beijing Summer Sprout Technology Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2023-07-28

Abstract

An OLED ice pack is disclosed, comprising at least one flexible OLED light-emitting panel, a housing, a driving device and an ice bag; wherein the flexible OLED light-emitting panel comprises a light-emitting surface and a non-light-emitting surface, and emits light with a peak wavelength of 400-1400 nm; wherein the flexible OLED light-emitting panel is in contact with the housing; the shell comprises at least one containing structure, the containing structure is arranged on one side of the non-luminous surface of the flexible OLED luminous panel, and the containing structure is used for fixing the ice bag; the driving device is electrically connected with the flexible OLED light-emitting panel. The novel OLED ice compress is more portable and is attached to a human body, the dual effects of accelerating wound healing and stimulating cell regeneration by utilizing an OLED light source when the ice bag is used for carrying out iced detumescence can be achieved, and the treatment time is greatly shortened.

Description

OLED ice compress patch

Technical Field

The invention relates to an ice compress. And more particularly, to an ice application using a flexible OLED light emitting panel as a light source.

Background

In common telephone, the 'loving heart is good for everyone', and in recent years, the medical industry becomes an increasingly growing consumption field in China, and certain minimally invasive operations are favored by consumers due to hidden wounds, quick recovery and remarkable effects. Although minimally invasive, the patient is still wounded, and most of the postoperative days are later, because the human body reacts to cause red swelling, stasis and the like in the operation area, the patient usually needs to perform ice compress for pain relieving and detumescence in the postoperative days. Generally, the doctor and American mechanism provides some independently packaged ice bags, when in use, the ice bags need to be applied to the area to be treated, after the ice bags are warmed to room temperature, the ice bags need to be put into a refrigerator again or used with new ice bags, and the ice bags need to be repeated for several times in a day, and each time is about 15 minutes. Ice compress can effectively eliminate red swelling, but the ice compress can be continued for more than 3 days to achieve the effect of complete detumescence, which is too long for busy urban people. In addition, the ice compress is inconvenient to use, the independent ice bag is not fixed in the treatment area, and a patient needs to press the ice bag by hands or fix the ice bag by other methods, such as wrapping and fixing the ice bag by gauze, and normal work and life are seriously affected. Similarly, in some joint swelling and pain or soft tissue injuries, such as common injuries caused by injury of tissues, bruise, sports injury, and the like, ice compress is often used to achieve the effects of easing pain and detumescence under the conditions of local swelling and pain caused by tissue injury, and the area to be treated is generally a relatively large area, and an ice bag is usually used, so that the same inconvenience as the above is caused. Moreover, shortening the recovery period is significant to professional athletes, and therefore physical ice compress alone is not the most desirable option.

Many studies have shown that red to near infrared illumination (peak wavelength between 600-1000 nm) helps to promote regeneration of collagen and skin cells and other tissues, and can be applied in the fields of anti-wrinkle cosmetology, wound healing promotion, freckle and scar removal, hair growth stimulation and the like (Chan Hee Nam et al, dermatologic Surgery,2017;43:371-380,Daniel Barolet,Semin Cutan Med Surg,27:227-238,2008,Yongmin Jeon,Adv.Mater.Technol.2018,1700391). Therefore, the red light illumination can also be used for accelerating wound healing and cell regeneration after the minimally invasive surgery, and the effect of rapid recovery is achieved. If the red light illumination and the ice compress effect are combined, the postoperative repair can be further quickened, and the zero recovery time is really achieved. Similarly, red light can also help the injured muscles recover quickly, allowing professional athletes to return to the field quickly. Blue light (with peak wavelength of 400-500 nm) also has antibacterial and antiinflammatory effects, and also has important effect in reducing wound infection.

Two types of light sources, lasers and LEDs, are commonly used in medical and aesthetic products on the market today. The laser is a coherent light source, has high energy and achieves the therapeutic effect by directly striking subcutaneous cells. However, laser is a point light source, and only partial repeated treatment can be performed, so that the laser is not suitable for large-area treatment, and burns are easily generated due to high laser intensity, so that the laser is not suitable for long-time illumination. In recent years, LED light sources have been widely used in medical and aesthetic products such as phototherapy masks, hair growing caps, and the like. LEDs are also point sources of light and face the same dilemma of large area treatment as lasers. Meanwhile, the LED light source is high in light intensity density, and is accompanied by a large amount of heat dissipation, a heat sink component is integrated to help cooling during normal use, so that the volume and the weight are increased, the LED light source is unfavorable for being used as a component for wearing a medical device, and more importantly, the heat-generating light source can melt an ice bag and cannot achieve an ice compress effect, so that the LED and the laser are not suitable for being used together with ice compress. Patent application CN109549831a discloses a multifunctional beauty instrument integrating an LED light source and a temperature control element, patent application CN107149725A discloses a smooth surface film integrating an LED light source and a refrigerating sheet, both disclose the combination of the LED light source and ice compress effect, and the ice compress effect is brought by a special device with refrigerating effect, because the LED works with a great deal of heat release, if only a traditional ice bag is used, the room temperature is reached and even higher soon, so that the low temperature must be maintained by means of an additional refrigerating component. Secondly, the beauty instrument disclosed in CN109549831A needs to use a series of LED lamp beads densely arranged, which also increases the difficulty of heat dissipation; in order to achieve the effect, the light surface film disclosed in CN107149725a needs to be attached with such an LED light source and a cooling sheet at each part of the whole face, which is very inconvenient. Again, these reflect that LEDs are not suitable for use in applications requiring large area treatment as a point source. Finally, as mentioned above, the LED light source itself usually needs to integrate a heat sink component when in use, and if a device with refrigeration effect is integrated again, on the one hand, the weight of the medical device is further increased, and portability is reduced; on the other hand, the complexity of the manufacturing process is also improved, and the production cost is increased.

The OLED is a surface light source and a cold light source, is not dazzling, and has light and thin characteristics, so that the OLED is easy to integrate on a flexible substrate. This also makes OLEDs an ideal light source choice for wearable applications, and patent applications related thereto have also covered various fields in recent years. The application of OLEDs to wearable phototherapy products such as facial masks, hair growing caps, glasses, pediatric jaundice therapy clothing, etc. is disclosed in chinese application CN210227133U, CN111481833A, CN111538171B, CN111450421A, CN210009521U prior to the present inventors. These applications focus on treating a specific area, such as the face, head, eyes, or for specific therapeutic purposes, such as treating jaundice, which are designed to fit the shape of the specific area from design to assembly, and do not mention how to combine the ice compress efficacy. CN112754764a before the present inventors describes a band-aid integrated with an OLED light source, but the band-aid disclosed in this application has a small constructional space, a small flexibility and is likewise not usable in connection with ice bags.

Various technical problems exist in traditional ice compress or phototherapy, including that LEDs or lasers are not suitable for being used together with ice bags, and the LEDs or lasers are point light sources and are not suitable for large-area treatment of muscles or bodies; or when an independent ice bag or a common phototherapy apparatus is used alone, a patient needs to press the ice bag by hand or needs to receive light therapy at a fixed position, so that the normal activity range and life are limited, and the recovery period is long. Therefore, the novel ice compress medical device which can be attached to a human body and has high portability is researched and developed, and the ice compress medical device is a work with wide market prospect and application value.

Disclosure of Invention

The present invention aims to provide an ice application integrating an OLED light source to solve at least part of the problems described above. The OLED ice compress disclosed by the invention utilizes the characteristics of an OLED cold light source and a surface light source, avoids the melting of the ice bag caused by heat dissipation in the use process, and can achieve the dual effects of accelerating wound healing and stimulating cell regeneration by utilizing the OLED light source while carrying out iced detumescence by utilizing the ice bag. In particular, the flexible OLED light source is used, so that the device can be better attached to the area to be treated, and is fully contacted with the skin, and the treatment effect is enhanced. Finally, a fixing device such as a binding belt, an adhesive tape and the like can be added on the basis, so that the ice compress can be better fixed on the area to be treated, and the patient can receive recovery treatment and simultaneously can normally live and work.

According to one embodiment of the invention, an OLED ice pack is disclosed comprising at least one flexible OLED light panel, a housing, a driving device and an ice bag;

wherein the flexible OLED light-emitting panel comprises a light-emitting surface and a non-light-emitting surface, and emits light with a peak wavelength of 400-1400 nm;

wherein the flexible OLED light-emitting panel is in contact with the housing;

the shell comprises at least one containing structure, the containing structure is arranged on one side of the non-luminous surface of the flexible OLED luminous panel, and the containing structure is used for fixing the ice bag;

the driving device is electrically connected with the flexible OLED light-emitting panel.

According to one embodiment of the invention, the flexible OLED light emitting panel emits light comprising a peak wavelength in the range of 400-1000 nm.

According to one embodiment of the invention, the ice bag is a medical ice bag or a water-filled ice bag.

According to one embodiment of the invention, the ice bag is removably connected to the holding structure.

According to one embodiment of the invention, wherein the outer packaging material of the ice bag comprises a waterproof material.

According to one embodiment of the invention, the light emitting surface of the flexible OLED light emitting panel faces towards the human body side.

According to one embodiment of the invention, the flexible OLED light emitting panel emits light comprising a peak wavelength in the range of 400-500nm, and/or 600-1400 nm.

According to one embodiment of the invention, the flexible OLED light emitting panel emits light comprising a peak wavelength in the range of 600-1000 nm.

According to one embodiment of the invention, the flexible OLED light-emitting panel further comprises at least one OLED device.

According to one embodiment of the invention, wherein the flexible OLED light-emitting panel further comprises a plurality of OLED devices, wherein the plurality of OLED devices are capable of emitting light of the same or different colors.

According to an embodiment of the present invention, the material of the housing is selected from silica gel, gauze, non-woven fabric or a combination thereof.

According to one embodiment of the present invention, the material of the containing structure includes a material having elasticity and/or a thermal insulation material.

According to one embodiment of the present invention, the material of the containing structure comprises a thermal insulation material, and the thermal insulation material comprises a reflective coating.

According to an embodiment of the present invention, the material of the containing structure includes a waterproof material.

According to one embodiment of the invention, the drive means comprise any one or more of the following: the device comprises a power supply, a charging device, a Bluetooth communication device, a chip, a lead, a circuit board and a switch.

According to one embodiment of the invention, wherein the charging device is a wireless charging device.

According to one embodiment of the invention, wherein the power source comprises a battery.

According to one embodiment of the invention, wherein the battery comprises any one or more of the group of: thin film batteries, micro batteries, button batteries, chemical batteries, lithium batteries, hydrogen batteries.

According to one embodiment of the invention, the driving means are wirelessly connectable with an external electronic device.

According to one embodiment of the invention, the driving device comprises a bluetooth communication device and can be connected with the external electronic device wirelessly through the bluetooth communication device.

According to one embodiment of the invention, the ice pack further comprises a fixing device.

According to one embodiment of the invention, wherein the ice pack further comprises a securing means selected from the group consisting of a strap, an elastic, a loop, a hook, a buckle, a velcro, a medical adhesive, and combinations thereof.

According to an embodiment of the invention, there is also disclosed an application of the OLED ice pack according to any of the previous embodiments in soft tissue injury or postoperative recovery.

According to one embodiment of the invention, a plurality of ice packs as described in any of the preceding embodiments are used in combination.

The invention discloses an ice application with a flexible OLED light source, which comprises a flexible OLED light-emitting panel, a shell, a driving device and an ice bag. The shell is integrated with a flexible OLED light-emitting panel and is electrically connected with the driving device, the OLED light-emitting panel emits light with the peak wavelength of 400-1400nm, and the shell on one side of the non-light-emitting surface of the OLED light-emitting panel is integrated with a containing structure for containing ice bags. When the device is used, the luminous surface of the OLED luminous panel is applied to a region to be treated, the ice bag is placed in the containing structure, the power supply system is started to light the OLED, the ice compress detumescence effect is realized through the ice bag, and the red light emitted by the OLED accelerates wound healing and promotes cell regeneration. On the basis, a fixing device can be added to fix the ice compress on the area to be treated, so that the ice compress patch is more convenient to use. The novel OLED ice compress paste is more fit for a human body, the ice bag and the OLED panel are mutually supported in function, a new effect of multiplied efficacy and portability is achieved, and the treatment time is greatly shortened.

Drawings

Fig. 1a-1c are schematic diagrams of single layer OLED device structures.

Fig. 2 is a schematic diagram of a stacked OLED device structure.

Fig. 3a-3d are schematic cross-sectional views of OLED light-emitting panels.

FIG. 4 is a schematic diagram of the device absolute temperature versus current density for a single layer red OLED device.

Fig. 5a-5c are schematic structural views of an OLED light-emitting panel.

Fig. 6a is a schematic cross-sectional and top view of an OLED ice pack 600.

Fig. 6b is a schematic cross-sectional and top view of an OLED ice pack 610.

Fig. 6c is a schematic cross-sectional and top view of OLED ice application 620.

Fig. 6d is a schematic cross-sectional and top view of OLED ice pack 630.

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. Unless a first layer is "in contact with" a second layer, other layers may be present between the first and second layers. For example, a cathode may be described as "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, and one or more organic layers disposed between the anode layer and the cathode layer. An "OLED device" may be bottom-emitting, i.e. from the anode side, top-emitting, i.e. from the cathode side, or a transparent device, i.e. both anode and cathode.

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 the encapsulation layer for external access.

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

As used herein, the term "flexible printed circuit" (FPC) refers to any flexible substrate coated with any one or a combination of the following, including but not limited to: conductive lines, resistors, capacitors, inductors, transistors, microelectromechanical 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 typically has a thickness of less than 1mm, more preferably less than 0.7mm.

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

As used herein, the term "independently driven" means that the operating points of two or more light emitting panels (or OLED devices) are separately controlled. Although the light emitting panels (or OLED devices) may be connected to the same controller or power line, there may be circuitry to divide the driving routes and power each panel (or OLED device) without affecting each other.

As used herein, the term "light emitting region" refers to the portion of the planar area where the anode, organic layer and cathode are co-coincident, excluding the light extraction effect.

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

As used herein, the term "single layer device" refers to devices having a light emitting layer and associated hole and electron transport layers between a pair of cathodes and anodes, such devices having a single light emitting layer and associated transport layers being "single layer devices".

As used herein, the term "stacked device" refers to a device structure having a plurality of light emitting layers between a pair of cathodes and anodes, each light emitting layer having its own independent hole transporting layer and electron transporting layer, each light emitting layer and its associated hole transporting layer and electron transporting layer comprising a single light emitting layer, the single light emitting layers being connected by a charge generating layer, and a device having such a plurality of single light emitting layers being a "stacked device".

As used herein, a "light source lattice" refers to a combination of a plurality of light sources that are repeatedly arranged at intervals to form a series of light sources; it may be arranged at equal intervals or non-equal intervals.

As used herein, the term "ice bag" refers to a sealed bag that can provide a low temperature (preferably, 0 ℃) and may be a medical ice bag, or a frozen water filling bag. The sealed bags of the "ice bag" are typically constructed of a waterproof material, such as plastic or the like.

A schematic of a typical single layer OLED device 100 is shown in fig. 1 a. Among them, the OLED device 100 includes 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, a cathode layer 109, and a capping layer (CPL) 110. In the bottom emission device, the anode layer 101 is a transparent or translucent material including, but not limited to, ITO, IZO, moOx (molybdenum oxide), etc., the transparency of which is typically greater than 50%; preferably, the transparency is greater than 70%; the cathode layer 109 is a material with high reflectivity, including but not limited to Al, ag, etc., with a reflectivity greater than 70%; preferably, the reflectivity is greater than 90%. In top-emitting devices, anode layer 101 is a material or combination of materials with high reflectivity, including but not limited to Ag, ti, cr, pt, ni, tiN, and combinations of the above materials with ITO and/or MoOx (molybdenum oxide), typically with a reflectivity greater than 50%; preferably, the reflectivity is greater than 80%; more preferably, the reflectivity is greater than 90%. While the cathode layer 109 should be a translucent or transparent conductive material, including but not limited to MgAg alloy, moOx, yb, ca, ITO, IZO, or combinations thereof, typically having a transparency greater than 30%; preferably, the transparency is greater than 50%. The hole injection layer 102 may be a single material layer, such as conventional HATCN; the hole injection layer 102 may also be doped with a proportion of p-type conductive dopant material, typically not higher than 5%, typically between 1% and 3%. The light emitting layer 105 typically also comprises at least one host material and at least one light emitting material, while the electron blocking layer 104 and the hole blocking layer 106 are optional layers, and the capping layer 110 is not required in a bottom emission device. The electron transport layer 107 may be a single layer of Yb, liQ, or LiF, or may be formed by co-evaporation of 2 or more materials. Fig. 1b is a schematic diagram of a multi-color OLED device 130, where the light-emitting layers may include a light-emitting layer 1051 and a light-emitting layer 1052, and where the light-emitting layer 1051 may have a peak wavelength between 600 nm and 750nm (red light emission) and the light-emitting layer 1052 may have a peak wavelength between 750nm and 1400nm (near infrared light emission) without changing the other layers. Note that the order of the two light-emitting layers may be reversed, that is, the light-emitting layer 1051 emits near-infrared light and the light-emitting layer 1052 emits red light. The OLED device with the structure can emit red light and near infrared light simultaneously. Fig. 1c is a schematic diagram of a color-changeable OLED device 120 having a light-emitting layer 1053, a light-emitting layer 1055, and a tuning layer 1054. The adjustment layer 1054 can adjust and control movement of electrons and holes under different current densities, thereby realizing adjustment and control of colors. For example, where the peak wavelength of the light emitting layer 1053 may be between 600-750nm (red light emission), the peak wavelength of the light emitting layer 1055 may be between 750-1400nm (near infrared light emission), at low current densities the exciton recombination zone is predominantly near the cathode side, i.e., in the light emitting layer 1053, when the OLED device 120 may emit red light; when the injection is gradually increased and the voltage and current density are increased, the exciton recombination zone moves to the anode side and finally enters the near-light emitting layer 1055, and the OLED device 120 emits near-infrared light. Of course, the light-emitting layer 1053 may emit near-infrared light, and the light-emitting layer 1055 may emit red light, or vice versa. The structure of the color-changeable OLED device and the use of the adjustment layer can be specifically referred to in patent applications CN111081891a and CN111081892a before the present inventors.

A schematic structure of a typical stacked OLED device 200 is shown in fig. 2, which includes an anode layer 201, a first light emitting cell 202, a Charge Generation Layer (CGL) 203, a second light emitting cell 204, and a cathode layer 205. The first light emitting unit 202 and the second light emitting unit 204 may further include a series of organic layers from the hole injection layer 102 to the electron injection layer 108 in the single-layer light emitting device 100, and the light emitting layers of the first light emitting unit 202 and the second light emitting unit 204 may be the same or different. The first light emitting unit 202 and the second light emitting unit 204 may emit light of the same color, such as red light having a peak wavelength between 600-750 nm; the first light emitting unit 202 and the second light emitting unit 204 may emit light of different colors, for example, the first light emitting unit 202 emits red light and the second light emitting unit 204 emits near infrared light having a peak wavelength between 750 and 1400nm, in which case the device 200 may emit red light and near infrared light simultaneously. The charge generation layer 203 is typically composed of an n-type material and a p-type material, and a buffer layer may also be added, as described in patent application CN112687811 a. If the stacked device is a top-emitting device, a capping layer (not shown) may also be added over the cathode layer 205. The stacked device of 2 units shown in fig. 2 can be further added with a third light emitting unit and a second charge generating layer to form a stacked device of 3 units. The fabrication of both single layer and stacked OLED devices is well known in the art and will not be described in detail herein.

One type of light source that may be used in ice application is a flexible Organic Light Emitting Device (OLED). A schematic cross-sectional view of a flexible OLED light-emitting panel is shown in fig. 3a-3 d. In fig. 3a, an OLED light-emitting panel 300 comprises a substrate 301, an OLED device 310, a pair of contact electrodes 303 electrically connected to the OLED device 310, a packaging layer 302 (but exposing the contact electrodes 303), and an adhesive structure 304 connecting the pair of contact electrodes 303 to an external driving circuit. The substrate 301 is flexible and includes, but is 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., PI material) that was previously applied to the support base in solution form, and cured and planarized for device fabrication. After the device is prepared, the device is peeled off from the supporting base plate by using laser and is transferred onto other flexible substrates according to the requirement. The OLED device 310 may be a bottom light emitting device or a top light emitting device, and preferably, the OLED device 310 is a top light emitting device because of its higher light emitting efficiency. The OLED device 310 may have a single-layer structure or a stacked structure, and preferably, the OLED device 310 has a stacked structure because it has a longer lifetime at the same brightness and because the thicker film layer is advantageous for improving the production yield. The organic material in the OLED device 310 may be evaporated in a vacuum chamber in a thermal evaporation manner, or may be formed partially or entirely using a solution method, including, but not limited to, ink jet printing (ink jet printing), spin coating, organic vapor spray printing (OVJP), etc. The encapsulation layer 302 is a thin film encapsulation layer, and the thickness is usually more than 10 μm, for example, a single inorganic layer, or a multi-layer structure of alternating organic and inorganic thin films, and is formed by Plasma Enhanced Chemical Vapor Deposition (PECVD), atomic Layer Deposition (ALD), printing, spin coating, and the like. The contact electrode 303 may comprise at least one anode contact and at least one cathode contact. A front cover film 305 may be added to the OLED light emitting panel described above as shown in fig. 3 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 version, the adhesive structure 304 may be an FPC bezel and the front cover film 305 may be a sheet of plastic film that provides mechanical support. A specific description of the use of FPC boards to drive OLED light emitting panels can be found in patent application US20190376650A1, which is incorporated by reference in its entirety, which is not within the scope of the detailed description of the present application. The front cover film 305 may also include a light extraction layer. When OLED device 310 is a top-emitting device, front cover film 305 is transparent in the light-emitting region. The front cover film 305 may be a combination of the various forms described above. Additional thin film encapsulation layers 306 may be coated on one or both sides of the substrate 301, as shown in fig. 3 c. The front cover film may also be coated with an additional thin film encapsulation layer 306, but is not shown here. In fig. 3d, the rear cover film 307 is covered onto the substrate 301. The rear cover film 307 may be used for mechanical support, typically also a flexible film, such as plastic like PET. When the OLED is a bottom light emitting device, the rear cover film 307 may be a light extraction layer and transparent. The rear cover film 307 may be a combination of the above-described various forms. Such a flexible OLED light-emitting panel, when electrically connected to an external electrical drive (whether in an on or off state), is a flexible OLED light source, which is one of the basic components in the present invention.

The OLED light source used in ice application can emit light with peak wavelength between 400-1400nm, preferably red light and near infrared light with peak wavelength between 600-970nm, and the light in the wave band has the effects of anti-wrinkle, skin regeneration, freckle removal, even anti-inflammation (such as hordeolum and acne) and wound healing, scar desalination and the like (Daniel barlet, semin Cutan Med Surg,27:227-238,2008). The OLED light source in the ice compress paste can also emit blue light of 400-500nm, and has the effects of sterilizing, diminishing inflammation and reducing wound infection. The preparation of red or near infrared or blue OLED devices is well known to those skilled in the art and will not be described in detail herein. OLEDs have a wide range of application temperatures, which can operate normally within a range of-40 ℃ to 85 ℃ (Chen Jinxin, huang Xiaowen, OLED-dream displays-materials and devices). Generally, the color and the brightness of the OLED device are not obviously changed at room temperature (25 ℃) and 0 ℃, namely the OLED device can normally work at room temperature (25 ℃) and 0 ℃ to achieve the phototherapy effect.

We measured the operating temperature of a single layer red OLED device at different current densities, when measured, we illuminated the OLED device at a fixed current density, then placed the thermocouple of the temperature measurer on the device surface, read the temperature of the device surface at that time, then gradually increase the current density, and read the device surface temperature at each current density. Fig. 4 is a schematic diagram showing the relationship between the device temperature and the current density of a single-layer red OLED device, wherein the abscissa is the logarithm of the current density, and the ordinate is the absolute temperature of the device measured. It can be seen that at 10mA/cm ² When operating at current density, the temperature of the OLED device is maintained substantially at room temperature, where one top-emitting red device has a luminance above about 7,000nits, and one bottom-emitting red device has a luminance above 3,000nits, which is far from the phototherapy requirement. If stacked devices are used, the current density required at the same output brightness will be lower, for example, the operating current density of a 2-cell red stacked device, also at a 3,000nits brightness, may be as low as 5mA/cm ² The operating temperature of the device will also be more stable at room temperature. This also means that at low current densities, when using an OLED device as a light source, the device temperature does not rise and therefore can be performed simultaneously with ice compress.

In some ice application which needs to achieve multiple treatment effects, a plurality of different light segments can be adopted for treatment at the same time, for example, blue light with the wavelength of 400-500nm is used for achieving the effects of diminishing inflammation and sterilizing, and red light with the wavelength of 600-1400nm and near infrared light are used for achieving the effects of promoting wound healing, stimulating cell regeneration and the like.

The manner in which light having a plurality of different wavelength bands is achieved is as follows:

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 OLED light emitting panel is flexible, i.e., uses a flexible substrate and a thin film package. The pixels here typically have a light emitting area in the order of millimeters, i.e. a minimum size of more than 1mm ² Preferably greater than 5mm ² . For example, a flexible OLED light-emitting panel 500 shown in fig. 5a may include a flexible OLED substrate 501 on which a series of OLED devices 502 are patterned, where the devices all share the same thin film encapsulation layer 503, and each light-emitting unit is an OLED device, and the whole flexible OLED light-emitting panel is a light source. In this case, metal wires may be arranged on the panel while preparing the anode or the cathode, so as to electrically connect the OLED devices 502, and the method of metal wires is well known to those skilled in the art and will not be described herein. Different OLED devices are controlled through a circuit control system, 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 approach is a flexible OLED light-emitting panel 510 as shown in fig. 5b, comprising a flexible OLED substrate 501, a series of OLED devices 502, but each sharing a separate encapsulation layer 513, and preferably the encapsulation layer is a thin film encapsulation layer. At this time, different OLED devices 502 can be connected not only through metal wires, but also through FPC circuit boards, so that the electrical conductivity and the complexity of the circuit are greatly improved. Also, single or multiple OLED devices 502 can be independently driven through these electrical connections. In both cases, if light of different colors is to be emitted, a metal mask can be used to vapor deposit different device structures for different OLED devices, especially to change the material of the light emitting layer; reference may also be made to patent applications CN111081892a and CN111081891a, all of which use the same structure of independent unit multiple light emitting layers, with the color change being achieved by the movement of the recombination zone at different operating points.

Alternatively, the individual OLED light emitting panels may be arranged in an array, as shown in fig. 5c, where each OLED light emitting panel comprises an individual substrate 521, an OLED device 502 and an individual encapsulation layer 513. The advantage of this arrangement is that the non-flexible OLED light emitting panels and/or the non-flexible encapsulation layers can be chosen, as long as the area of each OLED light emitting panel is small enough, the light source after the array is formed still has a certain flexibility, but preferably each individual OLED light emitting panel is also flexible. The individual OLED light emitting panels may be cut from the same motherboard, for example, all using the same individual unit multiple light emitting layer structure, or may be reassembled by selecting devices of different structures from different motherboards. The scheme has the advantages that devices can be screened, the yield is improved, and the color diversity of products is also increased. The independent light emitting panels shown in fig. 5c may be arranged and combined through FPC or front and rear cover films according to the requirement to form a lattice physically connected to each other, and specific reference may be made to the method disclosed in CN208750423U, which is not the focus of the research in this application and will not be repeated. Also, the panels can be independently controlled to give different operating currents. The above-mentioned array arrangement not only can realize polychromatic luminescence, but also can realize partition control, for example according to the progress of recovering, can select to only treat the region that has not healed completely yet, and need not treat whole injured position, or make intensity or illumination duration different in different regions different. Such optional local illumination may further reduce power consumption and save energy.

Fig. 6a is a schematic cross-sectional and top view of an OLED ice pack 600. The OLED ice application 600 includes a flexible OLED light panel 601, a housing 602, and an ice pack 603. The flexible OLED light-emitting panel 601 includes a light-emitting surface 6011 (light-emitting direction is shown by an arrow in the figure), and a non-light-emitting surface 6012. If the flexible OLED light-emitting panel is a bottom-emitting device, the light-emitting surface 6011 is on the side of the flexible substrate, and the non-light-emitting surface 6012 is on the side of the thin-film encapsulation layer; conversely, if the flexible OLED light-emitting panel is a top-emitting device, light-emitting surface 6011 is on the thin-film encapsulation layer side, and non-light-emitting surface 6012 is on the flexible substrate side. As mentioned above, the OLED light-emitting panel may have one OLED device or may include a plurality of OLED devices. The OLED devices can emit light with the peak wavelength of 400-1400nm, can also partially emit blue light with the peak wavelength of 400-500nm, and can partially emit red light with the peak wavelength of 600-1400nm and near infrared light with the peak wavelength of 600-1400nm, so that the blue light can be selected to achieve the effects of diminishing inflammation and sterilizing, and then the red light can be used to achieve the effect of recovering regeneration. It should be understood that although the flexible OLED light emitting panel 601 is shown in a planar form, it may be bent, so that it may be tightly attached according to the radian of the portion to be treated, thereby further improving the treatment efficiency. The housing 602 protects the flexible OLED lighting panel 601 from the drive circuitry while also providing a secure support for the ice bag 603. The housing 602 has integrated therein a driver 6021, the driver 6021 being electrically connected to the flexible OLED light-emitting panel 601, the electrical connection including, but not limited to, one or more of thin film metal, transparent conductive material, FPC leads. The driving device 6021 includes, but is not limited to, one or more of a power source, a charging device (preferably a wireless charging device), a bluetooth communication device, a chip, a lead, a circuit board, a switch, etc., wherein the power source comprises a battery, which may be selected from one or more of a thin film battery, a micro battery, a button battery, a chemical battery, a lithium battery, a hydrogen battery. The driving device 6021 may also be wirelessly connected to and controlled by an external electronic device, such as a switch, dimming, and zone control, through a bluetooth communication device. The external electronic device may be a smart phone, a smart watch, a tablet computer, a notebook computer, a computer, etc. Further, control may also be performed in conjunction with an application program (APP). The housing 602 may be further divided into a portion 6022 that protects and supports the flexible OLED light panel 601, and a receiving structure 6023 that supports the stationary ice bag. The housing portion 6022 may entirely cover the light emitting surface 6011 of the flexible OLED light emitting panel 601, where the housing portion 6022 is required to be transparent or light transmissive and flexible, and because the side may directly contact the skin of the human body, a skin-friendly material such as silicone, gauze, non-woven fabric, etc., preferably medical transparent silicone, is selected, and is transparent and naturally attached to the skin surface. Of course, the housing portion 6022 may cover only the edge portion of the flexible OLED light-emitting panel 601, which is not shown. The holding structure 6023 in the housing portion is used to support and hold the ice bag 603, and may take various forms, such as a photo frame in fig. 6a, where the holding structure 6023 may be made of a material with a certain elasticity to hold the ice bag 603. The containing structure 6023 may also be in other forms, such as pocket form 6123 in fig. 6b, the pocket may be a thermal insulation material with a reflective coating on the surface to help maintain the ice bag in a low temperature state for a longer period of time; it is also possible to fix the ice bag from different directions as in the strap forms 6223 and 6323 of fig. 6c and 6d, respectively, and the strap forms of the holding structures 6223 and 6323 may be made of elastic materials such as rubber bands, etc. As shown in fig. 6a, the OLED ice pack 600 may further include fixing devices (604 and 605), and the fixing devices 604 may be one or more of a strap, an elastic band, a loop, a hook, a buckle, a velcro, etc. depending on the application location, note that if a plurality of straps or a pair of ear-hooks/loops are one fixing device. Furthermore, the fixation device may also be an external component, such as a medical adhesive 605, which may be independent of the ice application. Similarly, the ice bag 603 mainly plays a role of ice compress, and may be a medical ice bag, or more simply, an ice block (water-filled ice bag) stored in a waterproof airtight bag, which can be easily detached from the housing containing structure 6023, 6123, 6223, 6323, and then put back into a refrigerator for freezing when not in use, so that the ice bag can be reused.

When the ice pack 600 shown in fig. 6a is used, the ice pack 603 is placed in the containing structure 6023 of the housing and fixed, then the housing on the side of the light emitting surface 6011 is applied to the area to be treated, the ice pack is fixed on the area to be treated by using the binding band 604 or the external adhesive tape 605, the flexible OLED light emitting panel 601 is lightened by the driving device 6021 or the external electronic device (such as a switch or an APP on a mobile phone), and after the light, shade or color or area is selected, the treatment is started. After the ice bag is gradually warmed to room temperature, the flexible OLED light-emitting panel 601 is turned off by the driving device 6021, the fixing device 604 is opened or the adhesive tape 605 is torn open, the ice compress is taken down, the ice bag is taken out from the containing structure 6023, and if the ice bag is required to be reused, the ice bag can be stored in the freezer, and the steps are repeated when the ice bag is used next time.

The OLED ice packs shown in fig. 6a-6d can be used as a single unit or a plurality of such ice packs can be combined for use, which has the advantage that a large area of redness or redness can be treated more effectively. This is because ice cubes in ice bags are typically solid and frozen to shape before use, and their conformation to the body surface is not very tight, especially after the area to be treated has become large, which can significantly reduce the efficiency of the treatment. And a plurality of small ice bags are connected for use, so that the problem can be effectively solved. A plurality of such ice packs may be fixed together using an external adhesive tape, or may be integrally connected to each other by providing a member capable of being connected to each other, such as a buckle or a velcro, on the housing 602.

The flexible OLED ice compress disclosed by the invention is simple and convenient to use, and when the ice bag is used for iced detumescence, the light emitted by the flexible OLED is utilized to further accelerate wound healing or cell regeneration, so that the postoperative recovery period is greatly shortened, and the flexible OLED ice compress can be repeatedly used or used in different areas and has more advantages than the traditional ice compress. Note that the application of OLED ice application in this application in soft tissue injury or post-operative recovery is a rehabilitation/healthcare behavior that can be performed by itself in daily life, and is not a process of identifying, determining or eliminating etiology or lesions.

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

Claims

1. An OLED ice pack comprising:

at least one flexible OLED light-emitting panel, a housing, a driving device and an ice bag;

wherein the flexible OLED light-emitting panel is in contact with the housing;

2. The ice application of claim 1, wherein the ice pack is a medical ice pack or a water filled ice pack.

3. The ice application of claim 1, wherein the ice pack is removably connected to the holding structure.

4. The ice application of claim 1, wherein the light emitting face of the flexible OLED light emitting panel is facing the side of the human body.

5. The ice compress of claim 1, wherein the flexible OLED light emitting panel emits light comprising a peak wavelength of 400-500nm, and/or 600-1400 nm; preferably, the flexible OLED light emitting panel emits light comprising a peak wavelength in the range of 600-1000 nm.

6. The ice application of claim 1, wherein the flexible OLED light-emitting panel further comprises at least one OLED device.

7. The ice pack of claim 1, wherein the shell is selected from the group consisting of silicone, gauze, nonwoven, and combinations thereof.

8. The ice pack of claim 1, wherein the material of the holding structure comprises a material having elasticity and/or a thermal insulation material; preferably, the insulating material comprises a reflective coating.

9. The ice application of claim 1, wherein the drive means comprises any one or more of the following: the Bluetooth power supply comprises a power supply, a charging device, a Bluetooth communication device, a chip, a lead, a circuit board and a switch.

10. The ice application of claim 9, wherein the power source comprises a battery; preferably, the battery comprises any one or more of the following group: thin film batteries, micro batteries, button batteries, chemical batteries, lithium batteries, hydrogen batteries.

11. The ice application of claim 1, wherein the driving means is wirelessly connectable to an external electronic device; preferably, the driving device comprises a bluetooth communication device and can be connected with the external electronic equipment wirelessly through the bluetooth communication device.

12. The ice application of claim 1, further comprising a securing device; preferably, the securing means is selected from the group consisting of straps, elastic bands, loops, hooks, buckles, velcro, medical adhesive tape, and combinations thereof.

13. Use of an OLED ice pack according to any one of claims 1-12 in soft tissue injury or postoperative recovery.

14. The use of claim 13 wherein a plurality of said ice packs are used in combination.