Light emitting device and light therapy apparatus

Abstract

The application discloses a light-emitting device and a phototherapy device. The light-emitting device comprises a battery layer, a light-emitting device layer and an encapsulation layer. The battery layer is used for powering the light-emitting device. The light-emitting device layer is located on the surface of the battery layer. The encapsulation layer is located on the surface of the light-emitting device layer away from the battery layer. The application achieves the effect of enhancing the portability of the wearable phototherapy device.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, in particular to a light-emitting device and a light therapy device. BACKGROUND

[0002] With the development of medicine, the light therapy method of applying visible light and invisible light in artificial light source to prevent and treat diseases is applied more and more widely, so that the light therapy device is applied more and more widely.

[0003] Some light therapy devices can be worn on the human body for long-term light therapy. At present, the light-emitting device of the wearable light therapy device needs to be equipped with a battery with a large volume, which leads to a large volume of the light therapy device, is not conducive to carrying, and makes the portability of the wearable light therapy device poor. SUMMARY

[0004] The present application provides a light-emitting device and a light therapy device to enhance the portability of the wearable light therapy device.

[0005] In a first aspect, an embodiment of the present application provides a light-emitting device, which comprises:

[0006] a battery layer for powering the light-emitting device;

[0007] a light-emitting device layer located on the surface of the battery layer;

[0008] an encapsulation layer located on the surface of the light-emitting device layer away from the battery layer.

[0009] Optionally, the battery layer comprises a stack of a flexible substrate, an electric core and a flexible encapsulation layer.

[0010] Optionally, the water vapor permeability of the flexible encapsulation layer or the flexible substrate of the battery layer close to the light-emitting device layer is less than 10 -3 grams per square meter per day.

[0011] Optionally, the electric core comprises a first electrode, an electrolyte layer and a second electrode;

[0012] the surface of the flexible substrate close to the electrolyte layer is provided with a first grid-shaped groove, and the first electrode is located in the first grid-shaped groove;

[0013] the surface of the flexible encapsulation layer close to the electrolyte layer is provided with a second grid-shaped groove, and the second electrode is located in the second grid-shaped groove.

[0014] Optionally, the line width of the first electrode is less than 100 microns;

[0015] and / or, the line width of the second electrode is less than 100 microns.

[0016] Optionally, the battery layer comprises a pigment, the pigment is located in the electrolyte layer, and the pigment is used for transmitting light of a preset wavelength.

[0017] Optionally, the first grid-shaped groove and the second grid-shaped groove are projectedly coincident on the flexible substrate.

[0018] Optionally, the light transmittance of the battery layer is greater than or equal to 60%.

[0019] In a second aspect, the embodiment of the present application further provides a light therapy device, which comprises the light emitting device according to any of the first aspect.

[0020] The battery layer can supply power for the light emitting device layer, and the battery layer is thin and small in size, so that the light emitting device does not need to be connected with an external battery, and the light therapy device does not need to be provided with a large-size battery, thereby reducing the size of the light therapy device, making the light therapy device convenient to carry, and enhancing the portability of the light therapy device. Moreover, the battery layer can also serve as the substrate of the light emitting device, so that the light emitting device does not need to be provided with a substrate, and the thickness of the light emitting device can be reduced, thereby further reducing the size and weight of the light therapy device, and being beneficial to improving the portability of the light therapy device. The present application solves the problem that the light emitting device of the current wearable light therapy device needs to be equipped with a large-size battery, resulting in a large size of the light therapy device and being inconvenient to carry, and achieves the effect of enhancing the portability of the wearable light therapy device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a light emitting device provided by the embodiment of the present application;

[0022] Figure 2 is a structural schematic diagram of another light emitting device provided by the embodiment of the present application;

[0023] Figure 3 is a structural schematic diagram of another light emitting device provided by the embodiment of the present application;

[0024] Figure 4 is a structural schematic diagram of a light therapy device provided by the embodiment of the present application; Figure 3 is a top view of a flexible substrate in the light therapy device;

[0025] Figure 5 is a top view of a flexible encapsulation layer in the light therapy device. Figure 3 DETAILED DESCRIPTION

[0026] ​The application will be described in further detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of description, only the parts related to the application are shown in the drawings rather than all the structures.

[0027] Figure 1 is a structural schematic diagram of a light-emitting device provided by an embodiment of the application, referring to Figure 1 The light-emitting device comprises: a battery layer 110, which is used to supply power for the light-emitting device; a light-emitting device layer 120, which is located on the surface of the battery layer 110; and an encapsulation layer 130, which is located on the surface of the light-emitting device layer away from the battery layer 110.

[0028] Specifically, the battery layer 110 can not only supply power for the light-emitting device, but also serve as the substrate of the light-emitting device. The battery layer 110 is, for example, a flexible battery layer, thereby providing a flexible substrate for the light-emitting device, so that the light-emitting device can be bent, thereby making the light-emitting device applicable to wearable devices, such as wearable phototherapy devices, etc. The light-emitting device layer 120 is, for example, an organic light-emitting diode (OLED) device layer, which comprises, for example, a stack of an anode layer, a light-emitting functional layer and a cathode layer, wherein the cathode layer comprises metal oxide or metal, and the anode layer comprises metal oxide or metal. The encapsulation layer 130 can encapsulate the light-emitting device layer 120, block water vapor, oxygen, etc., avoid corrosion of the light-emitting device by water vapor, oxygen, etc., and also block dust and prevent scratching, thereby achieving the effect of protecting the light-emitting device layer 120 and being conducive to prolonging the service life of the light-emitting device.

[0029] By arranging the battery layer 110 in the light-emitting device, the battery layer 110 can supply power for the light-emitting device layer 120, and the battery layer 110 is thin and small in size, so that the light-emitting device does not need to be connected with an external battery, and the phototherapy device does not need to be provided with a battery large in size, thereby reducing the size of the phototherapy device, making the phototherapy device easy to carry, and enhancing the portability of the phototherapy device. Moreover, the battery layer 110 can also serve as the substrate of the light-emitting device, so that the light-emitting device does not need to be provided with a substrate, and the thickness of the light-emitting device can be reduced, thereby further reducing the size and weight of the phototherapy device, and being conducive to improving the portability of the phototherapy device.

[0030] It should be noted that when the phototherapy device needs to be used for a long time and needs a large amount of electricity, the light-emitting device can comprise a stack of multiple battery layers 110, and the multiple battery layers 110 can be connected in series and / or in parallel to meet the demand of the phototherapy device for electricity, thereby enhancing the endurance of the phototherapy device.

[0031] The technical scheme of the embodiment is characterized in that the battery layer 110 is arranged in the light-emitting device, the battery layer 110 can supply power to the light-emitting element layer 120, the battery layer 110 is thin and small in size, the light-emitting device does not need to be connected to an external battery, the light therapy equipment does not need to be provided with a large-size battery, the size of the light therapy equipment is reduced, the light therapy equipment is convenient to carry, and the portability of the light therapy equipment is enhanced. In addition, the battery layer 110 can also serve as a substrate of the light-emitting device, the light-emitting device does not need to be provided with a substrate, and the thickness of the light-emitting device can be reduced, thereby further reducing the size and weight of the light therapy equipment, and improving the portability of the light therapy equipment. The technical scheme of the embodiment solves the problem that the light-emitting device of the current wearable light therapy equipment needs to be provided with a large-size battery, the size of the light therapy equipment is large, and the light therapy equipment is inconvenient to carry, and achieves the effect of enhancing the portability of the wearable light therapy equipment.

[0032] On the basis of the above technical scheme, the packaging layer 130 comprises an inorganic layer and / or an organic layer.

[0033] Specifically, the packaging layer 130 can comprise an inorganic layer, such as silicon nitride or silicon oxide, or a stack of an organic layer and an inorganic layer. The packaging layer 130 can also comprise an organic layer, which is not limited herein. The packaging layer 130 can encapsulate the light-emitting device, prevent the light-emitting device from being corroded by water vapor and oxygen in the environment, block dust, and prevent scratching, thereby achieving the effect of protecting the light-emitting device and prolonging the service life of the light-emitting device.

[0034] On the basis of the above embodiment, Figure 2 is another structure schematic diagram of a light-emitting device provided by the embodiment of the present application. Optionally, referring to Figure 2 , the battery layer 110 comprises a stack of a flexible substrate 111, a battery core 112, and a flexible packaging layer 113.

[0035] Specifically, the battery layer 110 comprises a flexible substrate 111, which comprises, for example, a polyimide (PI) substrate, a polyethylene terephthalate (PET) substrate, or an ultra thin flexible glass (UTG) substrate, thereby providing a flexible substrate for the light-emitting device, so that the battery layer 110 can be bent and applied to wearable equipment. The battery core 112 can supply power to the electric device, i.e., the battery core 112 can supply power to the light-emitting device. The flexible packaging layer 113 can bend the battery layer 110 and encapsulate the light-emitting device. The flexible packaging layer 113 can comprise an inorganic layer, such as silicon nitride or silicon oxide, or a stack of an organic layer and an inorganic layer.

[0036] Optionally, see Figure 2 The water vapor transmittance of the flexible encapsulation layer 113 or flexible substrate 111 near the light-emitting device layer 120 in the battery layer 110 is less than 10%. -3 grams per square meter per day.

[0037] Specifically, by controlling the water vapor transmission rate (WVTR) of the flexible encapsulation layer 113 or flexible substrate 111 near the light-emitting device layer 120 in the battery layer 110 to be less than 10. -3 With a moisture transmittance of 10 grams per square meter per day, the device effectively blocks moisture, ensuring the effectiveness of the battery layer 110 in encapsulating the light-emitting device. This prevents the light-emitting device layer 120 from being corroded by moisture in the environment, protecting the device and extending its lifespan. It should be noted that the specific value of the moisture transmittance of the flexible encapsulation layer 113 or flexible substrate 111 near the light-emitting device layer 120 in the battery layer 110 can be determined based on actual conditions, such as the encapsulation effect, and is not limited here. When the requirements for the encapsulation effect are strict, the moisture transmittance of the flexible encapsulation layer 113 or flexible substrate 111 near the light-emitting device layer 120 in the battery layer 110 can also be lower than other values.

[0038] Based on the above implementation plan, Figure 3 This is a schematic diagram of the structure of another light-emitting device provided in an embodiment of the present invention. Figure 4 This is provided by the embodiments of the present invention. Figure 3 Top view of a medium-flexible substrate. Figure 5 This is provided by the embodiments of the present invention. Figure 3 A top view of the flexible encapsulation layer, and Figure 3 The light-emitting device is along Figure 4 and Figure 5 A sectional view along the B1-B2 direction, optionally, see Figure 3 , Figure 4 and Figure 5 The battery cell 112 includes a first electrode 1121, an electrolyte layer 1122, and a second electrode 1123; a first mesh-shaped groove A1 is provided on the surface of the flexible substrate 111 near the first electrode 1121 and the electrolyte layer 1122, and the first electrode 1121 is located in the first mesh-shaped groove A1; a second mesh-shaped groove A2 is provided on the surface of the flexible encapsulation layer 113 near the second electrode 1123 and the electrolyte layer 1122, and the second electrode 1123 is located in the second mesh-shaped groove A2.

[0039] Specifically, the first electrode 1121 and the second electrode 1123 can supply power to the electrical equipment, thereby supplying power to the light-emitting device.

[0040] In the forming process of the battery layer 110, a transparent and elastic compound, polydimethylsiloxane (PDMS) can be poured into a silicon model (flexible substrate 111 and flexible encapsulation layer 113) to manufacture a grid-shaped groove, thereby forming a first grid-shaped groove A1 on the flexible substrate 111 and a second grid-shaped groove A2 on the flexible encapsulation layer 113. The metal film vapor generated above the first grid-shaped groove A1 can be used to manufacture a first conductive layer, so that the first grid-shaped groove A1 can be conductive. The metal film vapor generated above the second grid-shaped groove A2 can be used to manufacture a second conductive layer, so that the second grid-shaped groove A2 can be conductive. Then, the solution containing nanoscale effective electrode material is poured into the first grid-shaped groove A1 to form the first electrode 1121, and the solution containing nanoscale effective electrode material is poured into the second grid-shaped groove A2 to form the second electrode 1123, so that the transparent first electrode 1121 and the second electrode 1123 can be manufactured. The transparent electrolyte is accurately placed between the first electrode 1121 and the second electrode 1123 to form the electrolyte layer 1122, so that the transparent battery layer 110 can be manufactured. The battery layer 110 is set to be transparent, so that the light emitted by the light emitting device layer 120 can be emitted through the battery layer 110, so that the light emitting device can realize bottom light emission.

[0041] It should be noted that, Figure 4 and Figure 5 in the grid density is only schematic and is not limited.

[0042] Among them, polydimethylsiloxane (PDMS) is a transparent compound. By using polydimethylsiloxane (PDMS) instead of opaque conventional materials such as copper or aluminum, a transparent battery layer 110 can be manufactured. Moreover, polydimethylsiloxane (PDMS) has a low cost, which is conducive to reducing the manufacturing cost of the light emitting device.

[0043] Among them, the gel electrolyte can be changed to obtain the electrolyte layer 1122, so that the electrolyte layer can serve as both an electrolyte and a separator, thereby eliminating the need for an opaque separator like a common battery, thereby obtaining a transparent electrolyte layer 1122.

[0044] It should be noted that when the light emitting device is top light emitting, the battery layer 110 can not be transparent.

[0045] Optionally, referring to Figure 4 , the line width H1 of the first electrode 1121 is less than 50 microns; and / or, referring to Figure 5 , the line width H2 of the second electrode 1123 is less than 50 microns.

[0046] Specifically, when the light emitting device is bottom light emitting, the first electrode 1121 can be in a mesh structure, and the width of each line in the mesh is less than 50 microns. The line width H1 of the first electrode 1121 is less than 50 microns, so that the light emitted by the light emitting device layer 120 can pass through the transparent gap between the network lines of the first electrode 1121, so that the light emitting device can display normally. Preferably, the line width H1 of the first electrode 1121 is 35 microns. The line width H1 of 35 microns can have good transparency effect, and will not increase the difficulty of the manufacturing process. The specific line width H1 of the first electrode 1121 can be determined according to actual conditions. For example, when the light transmittance requirement is higher, the line width H1 of the first electrode 1121 can be smaller; when the manufacturing cost is required to be lower, the line width H1 of the first electrode 1121 can be larger.

[0047] When the light emitting device is bottom light emitting, the second electrode 1123 can be in a mesh structure, and the width of each line in the mesh is less than 50 microns. The line width H2 of the second electrode 1123 is less than 50 microns, so that the light emitted by the light emitting device layer 120 can pass through the transparent gap between the network lines of the second electrode 1123, so that the light emitting device can display normally. Preferably, the line width H2 of the second electrode 1123 is 35 microns. The line width H2 of 35 microns can have good transparency effect, and will not increase the difficulty of the manufacturing process. The specific line width of the second electrode 1123 can be determined according to actual conditions. For example, when the light transmittance requirement is higher, the line width H2 can be smaller; when the manufacturing cost is required to be lower, the line width H2 can be larger.

[0048] Optionally, referring to Figure 3 The battery layer 110 includes a pigment, and the pigment is located in the electrolyte layer 1122. The pigment is used to transmit light of a predetermined wavelength.

[0049] Specifically, when the light emitting device is bottom light emitting, the battery layer 110 is transparent, and the electrolyte layer 1122 of the battery layer 110 can include a pigment, so as to change the color of the electrolyte layer 1122, so that the battery layer 110 can transmit light of a predetermined wavelength, so that the transparent battery layer 110 can also have the function of a filter. The color of the pigment added in the electrolyte layer 1122 can be red, yellow or blue, etc. For example, when the light emitting device layer 120 emits white light, and the electrolyte layer 1122 includes a red pigment, the light emitting device can emit red light.

[0050] Optionally, referring to Figure 3 The first mesh-shaped groove A1 and the second mesh-shaped groove A2 are projected to coincide on the flexible substrate 111.

[0051] Specifically, the first grid-shaped groove A1 and the second grid-shaped groove A2 are projected to coincide on the flexible substrate 111, so that the first electrode 1121 in the first grid-shaped groove A1 and the third electrode 1123 in the second grid-shaped groove A2 completely correspond, thereby better forming the battery layer 110, so that the battery layer 110 can power the light emitting device.

[0052] Optionally, referring to Figure 3 The encapsulation layer 130 comprises a transparent encapsulation layer.

[0053] Specifically, when the light emitting device is top emitting, the encapsulation layer 130 comprises a transparent encapsulation layer, so that the light emitted by the light emitting device layer 120 can be emitted through the encapsulation layer 130. When the light emitting device layer 120 comprises a stack of an anode layer, a light emitting functional layer and a cathode layer, to realize that the light emitting device is top emitting, the cathode layer of the light emitting device layer 120 can be made into a transparent cathode layer, so that the light emitted by the light emitting functional layer can be emitted through the cathode layer and the encapsulation layer 130.

[0054] Optionally, referring to Figure 3 The light transmittance of the battery layer 110 is greater than or equal to 60%.

[0055] Specifically, when the light emitting device is bottom emitting, the transparency of the battery layer 110 can be ensured, so that the battery layer 110 is a transparent layer, thereby the light emitted by the light emitting device layer 120 can be emitted through the battery layer 110. And when the light emitting device layer 120 comprises a stack of an anode layer, a light emitting functional layer and a cathode layer, to realize that the light emitting device is bottom emitting, the anode layer of the light emitting device layer 120 can be made into a transparent anode layer. It should be noted that when the light emitting device needs a large amount of electricity, the number of layers of the battery layer 110 is large, the light transmittance of the battery layer 110 can be appropriately increased, so as to ensure that the light transmittance of the stack of the plurality of battery layers 110 is greater than or equal to 60%, thereby ensuring that the light emitting device can normally emit light when bottom emitting.

[0056] Optionally, a barrier layer can be formed between the battery layer 110 and the light emitting device layer 120, and the barrier layer comprises a barrier glue for example. The barrier layer can separate the battery layer 140 from the light emitting device layer 120, so that the battery layer 140 and the light emitting device layer 120 are insulated. And when the light emitting device is bottom emitting, the barrier layer is a transparent barrier layer, so that the light emitted by the light emitting device layer 120 can be emitted from the barrier layer and the battery layer 110.

[0057] The embodiment of the present application also provides a light therapy device, which comprises the light emitting device according to any of the above-mentioned embodiments.

[0058] Specifically, the light therapy device comprising the light emitting device of any of the above embodiments, by arranging the battery layer 110 in the light emitting device, the battery layer 110 can supply power for the light emitting device layer 120, and the battery layer 110 is thin and small in size, so that the light emitting device does not need to be connected with an external battery, so that the light therapy device does not need to be arranged with a large-size battery, thereby reducing the size of the light therapy device, so that the light therapy device is convenient to carry, and the portability of the light therapy device is enhanced. And the battery layer 110 can also serve as the substrate of the light emitting device, so that the light emitting device does not need to be arranged with a substrate, and the thickness of the light emitting device can be reduced, thereby reducing the size and weight of the light emitting device, and the portability of the light emitting device is improved. The technical scheme of the embodiment solves the problem that the light emitting device of the current wearable light therapy device needs to be equipped with a large-size battery, which leads to a large size of the light therapy device and is not convenient to carry, and achieves the effect of enhancing the portability of the wearable light therapy device.

[0059] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A light-emitting device, characterized in that, include: A battery layer for supplying power to the light-emitting device; A light-emitting device layer, wherein the light-emitting device layer is located on the surface of the battery layer; An encapsulation layer is located on the surface of the light-emitting device layer opposite to the battery layer; The battery layer comprises a stack of a flexible substrate, a battery cell, and a flexible encapsulation layer; The battery cell includes a first electrode, an electrolyte layer, and a second electrode; the battery layer includes a pigment located within the electrolyte layer, and the pigment is used to transmit light of a predetermined wavelength.

2. The light-emitting device according to claim 1, characterized in that, The water vapor transmission rate of the flexible encapsulation layer or flexible substrate near the light-emitting device layer in the battery layer is less than 10%. -3 grams per square meter per day.

3. The light-emitting device according to claim 1, characterized in that, The flexible substrate has a first grid-shaped groove on its surface near the electrolyte layer, and the first electrode is located in the first grid-shaped groove. The flexible encapsulation layer has a second mesh-like groove on its surface near the electrolyte layer, and the second electrode is located within the second mesh-like groove.

4. The light-emitting device according to claim 3, characterized in that, The linewidth of the first electrode is less than 100 micrometers; And / or, the linewidth of the second electrode is less than 100 micrometers.

5. The light-emitting device according to claim 3, characterized in that, The projections of the first mesh-like groove and the second mesh-like groove on the flexible substrate coincide.

6. The light-emitting device according to claim 1, characterized in that, The encapsulation layer includes a transparent encapsulation layer.

7. The light-emitting device according to claim 1, characterized in that, The light transmittance of the battery layer is greater than or equal to 60%.

8. A phototherapy device, characterized in that, Includes the light-emitting device according to any one of claims 1-7.

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