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 first flexible substrate, a light-emitting device layer located on a surface of the first flexible substrate, a barrier layer located on a surface of the light-emitting device layer away from the first flexible substrate, and a battery layer located on a surface of the barrier layer away from the light-emitting device layer, wherein the battery layer is used for powering the light-emitting device and encapsulating the light-emitting device. The application achieves the effect of enhancing the portability of a 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 first flexible substrate; a light-emitting device layer located on a surface of the first flexible substrate;

[0007] a barrier layer located on a surface of the light-emitting device layer away from the first flexible substrate;

[0008] a battery layer located on a surface of the barrier layer away from the light-emitting device layer, the battery layer being used for power supply of the light-emitting device and encapsulation of the light-emitting device.

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

[0010] Optionally, the water vapor permeability of the second flexible substrate or the flexible encapsulation layer close to the barrier layer in the battery 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] Optionally, the light-emitting device further comprises a first connecting member and a second connecting member; the light-emitting device layer comprises a stack of an anode layer, a light-emitting functional layer and a cathode layer;

[0013] the first electrode is connected with the anode layer through the first connecting member;

[0014] the second electrode is connected with the cathode layer through the second connecting member.

[0015] Optionally, the first connecting member comprises a metal column and / or conductive glue.

[0016] The second connecting member comprises a metal column and / or conductive glue.

[0017] Optionally, the light emitting device further comprises an encapsulation layer, the encapsulation layer is located between the light emitting device layer and the barrier layer, the encapsulation layer is provided with a first opening and a second opening;

[0018] The first connecting member is located in the first opening, and the first opening exposes the surface of the anode layer.

[0019] The second connecting member is located in the second opening, and the second opening exposes the surface of the cathode layer.

[0020] Optionally, the projection of the second opening on the cathode layer is located at the center of the cathode layer.

[0021] The projection of the first opening on the anode layer is located at the edge of the anode layer.

[0022] Optionally, the first flexible substrate comprises a first transparent flexible substrate.

[0023] In a second aspect, the embodiments of the present application further provide a light therapy device, the light therapy device comprising the light emitting device of any of the first aspect.

[0024] 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 battery, thereby reducing the size of the light therapy device, making the light therapy device easy to carry, and enhancing the portability of the light therapy device. Moreover, the battery layer can encapsulate the light emitting device, avoiding corrosion of the light emitting device by water vapor, oxygen and the like in the environment, and also blocking dust, achieving the effect of protecting the light emitting 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 battery, resulting in a large size of the light therapy device, which is not convenient to carry, and achieves the effect of enhancing the portability of the wearable light therapy device. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of a light emitting device provided by an embodiment of the present application;

[0026] Figure 2 is a structural schematic diagram of another light emitting device provided by an embodiment of the present application;

[0027] Figure 3 is a structural schematic diagram of another light emitting device provided by an embodiment of the present application;

[0028] Figure 4 is a structural schematic diagram of still another light emitting device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0029] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended for the purpose of interpretation of the present application and are not limiting of the present application. In addition, it should be noted that, for the purpose of description, only the parts related to the present application are shown in the accompanying drawings and not all the structures.

[0030] Figure 1 is a structural schematic diagram of a light emitting device provided by an embodiment of the present application. Referring to Figure 1 , the light emitting device comprises: a first flexible substrate 110; a light emitting device layer 120, the light emitting device layer 120 being located on a surface of the first flexible substrate 110; a barrier layer 130, the barrier layer 130 being located on a surface of the light emitting device layer 120 facing away from the first flexible substrate 110; and a battery layer 140, the battery layer 140 being located on a surface of the barrier layer facing away from the light emitting device layer 120, the battery layer 140 being used for powering the light emitting device and encapsulating the light emitting device.

[0031] Specifically, the first flexible substrate 110 comprises, for example, a polyimide (PI) substrate, a polyethylene terephthalate (PET) substrate or an ultra thin flexible glass (UTG) substrate, etc., the light emitting device layer 120 is, for example, an organic light emitting diode (OLED) device layer, the light emitting device layer 120 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, etc., and the anode layer comprises metal oxide or metal, etc. The barrier layer 130 comprises, for example, a barrier glue, and the barrier layer 130 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.

[0032] By arranging the battery layer 140 in the light emitting device, the battery layer 140 can power the light emitting device layer 120, and the battery layer 140 is thin and small in volume, 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 volume, thereby reducing the volume of the phototherapy device, making the phototherapy device convenient to carry and enhancing the portability of the phototherapy device. In addition, the battery layer 140 can also serve as an encapsulation layer of the light emitting device, can encapsulate the light emitting device, avoids corrosion of the light emitting device by water vapor, oxygen and the like in the environment, can also block dust, can also prevent scratching, and prevents damage of the light emitting device layer 120, achieves the effect of protecting the light emitting device, and is conducive to prolonging the service life of the light emitting device.

[0033] It should be noted that when the light therapy device needs to be used for a long time and needs a large amount of electricity, the light emitting device can include a plurality of battery layers 140 to meet the electricity demand of the light therapy device, thereby enhancing the endurance of the light therapy device.

[0034] The technical scheme of the embodiment, by arranging the battery layer 140 in the light emitting device, the battery layer 140 can supply power to the light emitting device layer 120, and the battery layer 140 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 provided with a large-size battery, thereby reducing the size of the light therapy device, making the light therapy device portable, and enhancing the portability of the light therapy device. And the battery layer 140 can encapsulate the light emitting device, avoid corrosion of the light emitting device by water vapor, oxygen and the like in the environment, also can block dust, also can prevent scratching, achieves the effect of protecting the light emitting device. 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, resulting in a large size of the light therapy device, which is not convenient to carry, and achieves the effect of enhancing the portability of the wearable light therapy device.

[0035] On the basis of the above-mentioned 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 140 includes a second flexible substrate 141, a battery core 142, and a flexible encapsulation layer 143.

[0036] Specifically, the battery layer 140 includes a second flexible substrate 141, which for example includes a polyimide (PI) substrate, a polyethylene terephthalate (PET) substrate, or an ultra-thin flexible glass (UTG) substrate, etc., so that the battery layer 140 can be bent, so that the battery layer 140 can be applied to wearable devices. The battery core 142 can provide power for the electric device, i.e. the battery core 142 can supply power for the light emitting device. The flexible encapsulation layer 143 makes the battery layer 140 bendable and can encapsulate the light emitting device. Wherein, the flexible encapsulation layer 143 can include an inorganic layer, or a stack of an organic layer and an inorganic layer.

[0037] Optionally, the water vapor transmission rate of the second flexible substrate 141 or the flexible encapsulation layer 143 of the battery layer 140 close to the barrier layer 130 is less than 10 -3 grams per square meter per day.

[0038] Specifically, the water vapor transmission rate (WVTR) of the second flexible substrate 141 or the flexible encapsulation layer 143 of the battery layer 140 close to the barrier layer 130 is less than 10 -3 grams per square meter per day, which can achieve the effect of effectively blocking water vapor and ensure the effectiveness of the battery layer 140 on the encapsulation of the light emitting device, thereby avoiding the light emitting device layer 120 in the light emitting device from being corroded by water vapor in the environment, achieving the effect of protecting the light emitting device, and thereby prolonging the service life of the light emitting device. It should be noted that the specific value of the water vapor transmission rate of the second flexible substrate 141 or the flexible encapsulation layer 143 of the battery layer 140 close to the barrier layer 130 can be determined according to actual conditions, for example, according to the encapsulation effect, which is not limited here. When the requirement for the encapsulation effect is more stringent, the water vapor transmission rate of the second flexible substrate 141 or the flexible encapsulation layer 143 of the battery layer 140 close to the barrier layer 130 can also be less than other values.

[0039] On the basis of the above-mentioned embodiments, Figure 3 is another structure schematic diagram of a light emitting device provided by an embodiment of the present application, and the battery cell 142 includes a first electrode 1421, an electrolyte layer 1422, and a second electrode 1423.

[0040] Specifically, the first electrode 1421 and the second electrode 1423 can supply power to the electrical equipment, i.e., can supply power to the light emitting device. The first electrode 1421 is, for example, the positive electrode of the battery, and the second electrode 1423 is, for example, the negative electrode of the battery, so that the battery layer 140 can supply power to the light emitting device layer 120 through the first electrode 1421 and the second electrode 1423.

[0041] Optionally, the light emitting device further includes a first connecting piece 161 and a second connecting piece 162; the light emitting device layer 120 includes a stack of an anode layer 121, a light emitting functional layer 122, and a cathode layer 123; the first electrode 1421 is connected to the anode layer 121 through the first connecting piece 161; and the second electrode 1423 is connected to the cathode layer 123 through the second connecting piece 162.

[0042] Specifically, the first connecting member 161 and the second connecting member 162 penetrate the barrier layer 130. The first electrode 1421 is connected to the anode layer 121 through the first connecting member 161, and the second electrode 1423 is connected to the cathode layer 123 through the second connecting member 162, so that the battery layer 140 can supply power to the light-emitting device layer 120, and the battery layer 140 is connected to the light-emitting device layer 120 through the first connecting member 161 and the second connecting member 162, so that the connection is more reliable, the integrity of the light-emitting device is stronger, and the portability of the phototherapy equipment is improved. Moreover, the second electrode 1423 is directly connected to the cathode layer 123 through the second connecting member 162, without leading out the cathode layer 123, which can reduce the manufacturing process of the light-emitting device layer 120 and reduce the process difficulty. Therefore, the conventional cathode overlap area design (the electrode film layer is overlapped on the anode layer 121 by designing the screen body and the evaporation mask) is omitted, and the width from the light-emitting area to the edge of the light-emitting device is reduced. In addition, preferably, the connection position of the cathode layer 123 is the center position of the cathode layer 123, that is, away from the edge of the light-emitting device, which has the advantages of improving the packaging reliability of the light-emitting device, and increasing the uniformity of the light-emitting device.

[0043] In another embodiment, the cathode layer 123 can also be connected to the surface of the anode layer 121 in an overlapping manner, and the second electrode 1423 of the battery layer 140 is connected to the cathode layer 123 through the second connecting member 162, Figure 3 In the embodiment, only the case that the first electrode 1421 is directly connected to the anode layer 121 through the first connecting member 161 is shown, and the case that the cathode layer 123 is connected to the surface of the anode layer 121 in an overlapping manner is not shown, but is not limited thereto.

[0044] Optionally, the first connecting member 161 comprises a metal column and / or conductive glue; and the second connecting member 162 comprises a metal column and / or conductive glue.

[0045] Figure 4 is another structure diagram of a light-emitting device provided by the embodiment of the present application. Optionally, referring to Figure 4 The light-emitting device further comprises an encapsulation layer 150, which is located between the light-emitting device layer 120 and the barrier layer 130, and the encapsulation layer 150 is provided with a first opening 151 and a second opening 152. The first opening 151 exposes the surface of the anode layer 121, and the first connecting member 161 is located in the first opening 151 and connected to the surface of the anode layer 121. The second opening 152 exposes the surface of the cathode layer 123, and the second connecting member 162 is located in the second opening 152 and connected to the surface of the cathode layer 123.

[0046] Specifically, the encapsulation layer 150 is formed between the light-emitting device layer 120 and the barrier layer 130, the light-emitting device layer 120 can be further encapsulated, and water vapor, oxygen and the like are further blocked, so that the light-emitting device layer 120 is better protected, and the service life of the light-emitting device is prolonged. The encapsulation layer 150 can include an inorganic layer, such as silicon nitride or silicon oxide, or a stack of an organic layer and an inorganic layer. In addition, the encapsulation layer 150 is, for example, a flexible encapsulation layer, facilitating the bending of the light-emitting device and enhancing the wearability of the phototherapy device, thereby enhancing the portability of the phototherapy device. The second opening 152 is, for example, a via hole, and the second connecting piece 162 is located in the second opening 152, so that the second connecting piece 162 can penetrate the encapsulation layer, and the second electrode 1423 can be connected to the cathode layer 123 through the second connecting piece 162. The first opening 151 is, for example, a via hole, and the first opening 151 can also be a portion of the encapsulation layer 150 that does not cover the anode layer 121, that is, the anode layer 121 is larger, and the edge of the anode layer 121 is exposed to the encapsulation layer 150, so that the first connecting piece 161 does not need to penetrate the encapsulation layer 150, avoiding the change of the density inside the encapsulation layer 150.

[0047] Optionally, referring to Figure 4 , the projection of the second opening 152 on the cathode layer 123 is located at the center of the cathode layer 123; and the projection of the first opening 151 on the anode layer 121 is located at the edge of the anode layer 121.

[0048] Specifically, the first opening 151 is arranged at the edge, and the first connecting piece 161 is located in the first opening 151, so that the first electrode 1421 of the battery layer 140 can be directly connected to the anode layer 121 through the first connecting piece 161, and the first connecting piece 161 does not need to penetrate the encapsulation layer 150. Moreover, since the corrosion of water vapor and oxygen is from the edge to the center of the light-emitting device, the projection of the second connecting piece 162 on the first flexible substrate 110 is located at the center of the first flexible substrate 110, which can further avoid the corrosion of the second connecting piece 162 by water vapor and oxygen.

[0049] Optionally, referring to Figure 4 , the first flexible substrate 110 includes a first transparent flexible substrate.

[0050] Specifically, when the light-emitting device is bottom-emitting, the first flexible substrate 110 includes a first transparent flexible substrate, so that the light emitted by the light-emitting device layer 120 can be emitted through the first transparent flexible substrate. When the light-emitting device layer 120 includes a stack of an anode, a light-emitting functional layer and a cathode, to realize that the light-emitting device is bottom-emitting, the anode layer of the light-emitting device layer 120 can be made as a transparent anode layer.

[0051] The embodiment of the present application also provides a phototherapy device including the light-emitting device according to any of the above-mentioned embodiments.

[0052] Specifically, the light therapy device comprising the light emitting device of any of the above embodiments, by arranging the battery layer 140 in the light emitting device, the battery layer 140 can supply power for the light emitting device layer 120, and the battery layer 140 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 and enhancing the portable performance of the light therapy device. And the battery layer 140 can encapsulate the light emitting device, avoid the light emitting device from being corroded by water vapor, oxygen and the like in the environment, also can block dust, also can prevent scratching, achieves the effect of protecting the light emitting device. 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 the large size of the light therapy device and is not conducive to carrying, and achieves the effect of enhancing the portability of the wearable light therapy device.

[0053] 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, readjustments 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 can include more other equivalent embodiments 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: First flexible substrate; A light-emitting device layer, wherein the light-emitting device layer is located on the surface of the first flexible substrate; A barrier layer is located on the surface of the light-emitting device layer opposite to the first flexible substrate; A battery layer is located on the surface of the barrier layer opposite to the light-emitting device layer. The battery layer is used to power the light-emitting device and encapsulate the light-emitting device. The battery layer includes a stack of a second flexible substrate, a battery cell, and a flexible encapsulation layer. The battery cell includes a first electrode, an electrolyte layer, and a second electrode. A first connector and a second connector; the light-emitting device layer includes a stack of an anode layer, a light-emitting functional layer, and a cathode layer; the first electrode is connected to the anode layer through the first connector; the second electrode is connected to the cathode layer through the second connector; the light-emitting device does not need to be connected to an external battery; An encapsulation layer is located between the light-emitting device layer and the barrier layer, and the encapsulation layer is provided with a first opening and a second opening; The first connector is located at the first opening, which exposes the surface of the anode layer; The second connector is located at the second opening, which exposes the surface of the cathode layer; The projection of the second opening onto the cathode layer is located at the center of the cathode layer; The projection of the first opening onto the anode layer is located at the edge of the anode layer; the edge of the anode layer is exposed outside the encapsulation layer, so that the first connector does not need to penetrate the encapsulation layer.

2. The light-emitting device according to claim 1, characterized in that, The water vapor permeability of the second flexible substrate or flexible encapsulation layer near the barrier 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 first connector includes a metal post and / or conductive adhesive; The second connector includes a metal post and / or conductive adhesive.

4. The light-emitting device according to claim 1, characterized in that, The first flexible substrate includes a first transparent flexible substrate.

5. A phototherapy device, characterized in that, Includes the light-emitting device according to any one of claims 1-4.

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