CN214956919U - Light-emitting structure - Google Patents

Abstract

The embodiment of the application provides a light-emitting structure, relates to the technical field of light, and aims to solve the problem that light rays emitted by an electroluminescent structure are single. The light-emitting structure comprises a substrate (110), a first electrode layer (120), a first light-emitting layer (130) and a second electrode layer (140) which are arranged in sequence; the first light-emitting layer (130) is a mixture layer comprising an inorganic electroluminescent material and an inorganic long afterglow photoluminescent material.

Description

Light-emitting structure

Technical Field

The present application relates to the field of light technology, and more particularly, to a light emitting structure.

Background

Electroluminescence (EL) is also called electroluminescence. Electroluminescence may refer to a physical phenomenon in which electrons excited by an electric field collide with a light emitting layer by generating an electric field by a voltage applied to two electrodes, and the electrons are caused to transit, change, and recombine between energy levels to emit light.

In the related art, the light emitted by the electroluminescent structure is single, and the requirements of users cannot be well met.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a light-emitting structure to solve the problem that light emitted by an electroluminescent structure is single.

The embodiment of the application provides a light-emitting structure, which comprises a substrate, a first electrode layer, a first light-emitting layer and a second electrode layer which are sequentially arranged; the first luminescent layer is a mixture layer comprising an inorganic electroluminescent material and an inorganic long afterglow photoluminescent material.

Optionally, when the first electrode layer and the second electrode layer are powered on and the inorganic electroluminescent material included in the first light-emitting layer emits light, the light-emitting structure exhibits a first pattern of light spots; when the first electrode layer and the second electrode layer are powered off and the inorganic long afterglow photoluminescent material included in the first light-emitting layer emits light, the light-emitting structure presents light spots in a second pattern; the first pattern is different from the second pattern.

Optionally, a shape of a surface of the first electrode layer or the second electrode layer opposite to the first light emitting layer is a first shape, a shape of a surface of the first light emitting layer opposite to the first electrode layer is a second shape, and the first shape is different from the second shape.

Optionally, when the first electrode layer and the second electrode layer are powered and the inorganic electroluminescent material included in the first light-emitting layer emits light, the light-emitting structure emits light of a first color; when the first electrode layer and the second electrode layer are powered off and the inorganic long afterglow photoluminescent material included in the first light-emitting layer emits light, the light-emitting structure emits light of a second color; the first color is different from the second color.

Optionally, the light emitting structure further includes a second light emitting layer and a third electrode layer, the second light emitting layer is disposed on the second electrode layer, the third electrode layer is disposed on the second light emitting layer, and the second light emitting layer is a mixture layer including an inorganic electroluminescent material and an inorganic long afterglow photoluminescent material.

Optionally, when the first electrode layer and the second electrode layer are powered on and the inorganic electroluminescent material included in the first light-emitting layer emits light, the light-emitting structure emits light of a third color; when the second electrode layer and the third electrode layer are electrified and the inorganic electroluminescent material included in the second light-emitting layer emits light, the light-emitting structure emits light of a fourth color; the third color and the fourth color are different.

Optionally, the light emitting structure further includes a protective layer, the protective layer is located at an outermost layer of the light emitting structure, and the protective layer is deviated from the substrate.

Optionally, the ratio of the inorganic electroluminescent material and the inorganic long-afterglow photoluminescent material included in the mixture is 1: 1 to 5: 1.

optionally, light emitted by the light emitting structure is emitted from one side where the substrate is located, and the first electrode layer and the substrate both have light-transmitting properties; or the light emitted by the light-emitting structure is emitted from the side deviating from the substrate, and each layer structure positioned on the side of the first light-emitting layer far away from the substrate has light transmittance.

Optionally, the light emitting structure further includes a first insulating layer disposed between the first electrode layer and the first light emitting layer, and a second insulating layer disposed between the first light emitting layer and the second electrode layer.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

in the embodiment of the present application, the first light-emitting layer may be sandwiched between the first electrode layer and the second electrode layer, and the inorganic electroluminescent material included in the first light-emitting layer may be caused to emit light by applying a voltage to the first electrode layer and the second electrode layer. The long afterglow photoluminescence material contained in the first luminescent layer can absorb the light energy generated when the inorganic electroluminescence material emits light, and after the first electrode layer and the second electrode layer are powered off, the long afterglow photoluminescence material contained in the first luminescent layer can slowly release the absorbed light energy in the form of light. Therefore, under the condition that the light-emitting structure is powered on, the light-emitting structure can perform electroluminescence, and under the condition that the light-emitting structure is powered off, the light-emitting structure can perform photoluminescence, so that the problem that light emitted by the electroluminescence structure is single can be solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic view of a first light emitting structure provided in an embodiment of the present application;

fig. 2 is a schematic view of light spots when an inorganic electroluminescent material in a light-emitting structure according to an embodiment of the present disclosure emits light;

fig. 3 is a schematic view of a light spot when an inorganic long afterglow photoluminescent material in a light emitting structure provided in an embodiment of the present application emits light;

fig. 4 is a schematic view of a second light emitting structure provided in the present application;

fig. 5 is a schematic view of a third light emitting structure provided in an embodiment of the present application;

fig. 6 is a schematic view of a fourth light emitting structure provided in the present embodiment;

fig. 7 is a schematic view of a fifth light emitting structure provided in an embodiment of the present application.

Description of reference numerals: 100-a light emitting structure; 110-a substrate; 120-a first electrode layer; 125-a first insulating layer; 130-a first light emitting layer; 135-a second insulating layer; 140-a second electrode layer; 150-a second light emitting layer; 160-a third electrode layer; 170-a protective layer; 210-a first pattern; 220-second pattern.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.

Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic view of a first light emitting structure provided in an embodiment of the present application. Referring to fig. 1, in an embodiment of the present application, a light emitting structure 100 may include a substrate 110, a first electrode layer 120, a first light emitting layer 130, and a second electrode layer 140, which are sequentially disposed; the first light emitting layer 130 may be a mixture layer including an inorganic electroluminescent material and an inorganic long persistence photoluminescent material.

It should be noted that the electroluminescent material can be understood as a material that directly converts electric energy into light energy under the action of a direct current or alternating current electric field by means of excitation of current and electric field. The electroluminescent material may include an organic electroluminescent material and an inorganic electroluminescent material. When the organic electroluminescent material is used as the light emitting material, the driving electrode needs to distinguish between the positive and negative electrodes, and when the inorganic electroluminescent material is used as the light emitting material, the positive and negative electrodes may not be distinguished. Also, the overall manufacturing process of the light emitting structure using the organic electroluminescent material as the light emitting material may be more complicated than the inorganic electroluminescent material as the light emitting material. Therefore, in the embodiment of the present application, the first light emitting layer 130 may be made of an inorganic electroluminescent material, and thus, the complexity of the manufacturing process of the light emitting structure 100 may be reduced.

Illustratively, in the embodiments of the present application, the inorganic electroluminescent material may be an inorganic powder having ZnS, ZnSe, CdS as a main matrix, and doped with manganese ions, copper ions, silver ions, aluminum ions, or the like. It should be noted that the above materials are merely examples, and do not constitute an improper limitation on the embodiments of the present application.

It should be noted that the long afterglow photoluminescent material is called long afterglow material for short, also called noctilucent material. The long afterglow photoluminescent material is one kind of photoluminescent material capable of emitting visible light under the excitation of light source, storing partial light energy and releasing slowly in the form of light after the excitation is stopped.

Illustratively, in the embodiments of the present application, the long persistence photoluminescent material may be an inorganic powder having aluminate or silicate as a main matrix, and doped with rare earth ions such as europium ion, dysprosium ion, and erbium ion. The long persistence photoluminescent material may include an organic long persistence photoluminescent material and an inorganic long persistence photoluminescent material, and in the embodiment of the present application, the first light emitting layer 130 may be made of an inorganic long persistence photoluminescent material, so that the complexity of the manufacturing process of the light emitting structure 100 may be reduced. It should be noted that the above materials are merely examples, and do not constitute an improper limitation on the embodiments of the present application.

In this way, in the embodiment of the present application, the first light-emitting layer 130 may be sandwiched between the first electrode layer 120 and the second electrode layer 140, and the inorganic electroluminescent material included in the first light-emitting layer 130 may be caused to emit light by applying a voltage to the first electrode layer 120 and the second electrode layer 140. The long persistence photoluminescent material included in the first light-emitting layer 130 may absorb light energy generated when the inorganic electroluminescent material emits light. After the first electrode layer 120 and the second electrode layer 140 are powered off, the long persistence photoluminescent material included in the first light emitting layer 130 may release absorbed light energy slowly in the form of light. Thus, when the light emitting structure 100 is powered on, the light emitting structure 100 can perform electroluminescence, and when the light emitting structure 100 is powered off, the light emitting structure 100 can perform photoluminescence, so that the problem that light emitted by the electroluminescence structure is single can be solved.

Fig. 2 is a schematic view of light spots when an inorganic electroluminescent material in a light-emitting structure according to an embodiment of the present disclosure emits light; fig. 3 is a schematic view of a light spot when an inorganic long afterglow photoluminescent material in a light emitting structure emits light according to an embodiment of the present application. Referring to fig. 2 and 3, in any of the light emitting structures 100 provided in the embodiments of the present application, in a case where the first electrode layer 120 and the second electrode layer 140 are powered on and the inorganic electroluminescent material included in the first light emitting layer 130 emits light, the light emitting structure 100 may exhibit a light spot of the first pattern 210. In a case where the first electrode layer 120 and the second electrode layer 140 are powered off and the inorganic long afterglow photoluminescent material included in the first light emitting layer 130 emits light, the light emitting structure 100 may exhibit a light spot of the second pattern 220. Wherein the first pattern 210 may be different from the second pattern 220. In the embodiment of the present application, the light spot may be understood as a bright area represented by a portion of the light emitting structure 100 emitting the emergent light. It should be noted that the first pattern 210 is different from the second pattern 220, and may include a shape, a size, and the like of the first pattern 210 and the second pattern 220.

Thus, in the embodiment of the present application, the light emitting structure 100 may have at least two light emitting states, wherein when the inorganic electroluminescent material included in the first light emitting layer 130 emits light, the light emitting structure 100 may exhibit the light spot of the first pattern 210; when the inorganic long persistence photoluminescent material included in the first light-emitting layer 130 emits light, the light-emitting structure 100 may exhibit a light spot of the second pattern 220. The light emitting structure 100 may have a cool light effect by presenting the light spots of the first pattern 210 and the second pattern 220, respectively.

In addition, in the embodiment of the present application, the color of the light spot of the first pattern 210 may be different from the color of the light spot of the second pattern 220. For example, the color of the light spots of the first pattern 210 may be blue, and the color of the light spots of the second pattern 220 may be red. In this way, the light efficiency of the light emitting structure 100 may be made more cool.

In order to make it easier for those skilled in the art to realize different light effects of the first pattern 210 and the second pattern 220, the following provides several solutions for those skilled in the art to refer to. It should be noted that the following schemes are merely examples, and there are many other ways to make the first pattern 210 different from the second pattern 220 in the embodiments of the present application.

Alternatively, in the embodiment of the present application, a manner of changing the shape of the conductive layer may be adopted such that the light emitting shape of the light emitting layer is different. For example, a surface of the first electrode layer 120 or the second electrode layer 140 opposite to the first light emitting layer 130 may have a first shape, a surface of the first light emitting layer 130 opposite to the first electrode layer 120 may have a second shape, and the first shape may be different from the second shape. In this way, the first pattern 210 may be made different from the second pattern 220.

In the embodiment of the present application, the shape of the surface of the first electrode layer 120 facing the first light-emitting layer 130 may be changed, or the shape of the surface of the second electrode layer 140 facing the first light-emitting layer 130 may be changed. For example, a shape of a surface of the first electrode layer 120 opposite to the first light emitting layer 130 may be a third shape, and a shape of a surface of the second electrode layer 140 opposite to the first light emitting layer 130 may be a fourth shape, wherein any one of the third shape and the fourth shape may be different from the second pattern 220. In this way, the first pattern 210 may be made different from the second pattern 220.

Alternatively, in the embodiment of the present application, the shape of the first pattern 210 or the second pattern 220 may be adjusted by using a shielding layer by providing the shielding layer, so that the first pattern 210 may be different from the second pattern 220.

Optionally, on the basis of any one of the light emitting structures 100 provided in this embodiment of the application, when the first electrode layer 120 and the second electrode layer 140 are powered on and the inorganic electroluminescent material included in the first light emitting layer 130 emits light, the light emitting structure 100 can emit light of the first color. When the first electrode layer 120 and the second electrode layer 140 are powered off and the inorganic long afterglow photoluminescent material included in the first light emitting layer 130 emits light, the light emitting structure 100 can emit light of the second color. Wherein the first color may be different from the second color. Therefore, the light emitting structure 100 can emit light rays with different colors in different states, and the lighting effect of the light emitting structure 100 can be cool.

Optionally, on the basis of any one of the light emitting structures 100 provided in the embodiments of the present application, the light emitting structure 100 may further include another light emitting layer. Fig. 4 is a schematic diagram of a second light emitting structure provided in an embodiment of the present disclosure, and referring to fig. 4, for example, in an embodiment of the present disclosure, the light emitting structure 100 may further include a second light emitting layer 150 and a third electrode layer 160, the second light emitting layer 150 may be disposed on the second electrode layer 140, the third electrode layer 160 may be disposed on the second light emitting layer 150, and the second light emitting layer 150 may be a mixture layer including an inorganic electroluminescent material and an inorganic long afterglow photoluminescent material. It should be noted that, in the embodiment of the present application, the light emitting structure 100 may further include a third light emitting layer, a fourth light emitting layer, and the like, and a corresponding electrode layer, which will not be described herein.

In this way, in the embodiment of the present application, the inorganic electroluminescent material included in the first light emitting layer 130 may be caused to emit light by applying a voltage to the first electrode layer 120 and the second electrode layer 140. The inorganic electroluminescent material included in the second light emitting layer 150 may be caused to emit light by applying a voltage to the second electrode layer 140 and the third electrode layer 160. Therefore, the problem that the light emitted by the electroluminescent structure is single can be further improved.

Alternatively, in the embodiment of the present application, in the case that the first electrode layer 120 and the second electrode layer 140 are powered on and the inorganic electroluminescent material included in the first light-emitting layer 130 emits light, the light-emitting structure 100 can emit light of a third color. When the second electrode layer 140 and the third electrode layer 160 are powered on and the inorganic electroluminescent material included in the second light-emitting layer 150 emits light, the light-emitting structure 100 can emit light of a fourth color. Wherein the third color and the fourth color are different. Thus, the light emitting structure 100 can emit light rays with different colors in different states, and the problem that the light rays emitted by the electroluminescent structure are single can be further improved.

Fig. 5 is a schematic view of a third light emitting structure provided in an embodiment of the present application. Referring to fig. 5, based on any one of the light emitting structures 100 provided in the embodiments of the present disclosure, the light emitting structure 100 may further include a protective layer 170, the protective layer 170 may be located at an outermost layer of the light emitting structure 100, and the protective layer 170 may be opposite to the substrate 110. In this way, the protective layer 170 may be used to protect the light emitting structure 100. It should be noted that, in the embodiment of the present application, the protection layer 170 may have a light-transmitting property, so that the light emitted by the light-emitting structure 100 can be smoothly emitted from the protection layer 170.

In order to facilitate the skilled person to better implement the present solution, the present application also provides the ratio range of the inorganic electroluminescent material and the inorganic long afterglow photoluminescent material. Alternatively, in embodiments herein, the ratio of inorganic electroluminescent material and inorganic long persistent photoluminescent material included in the mixture may be 1: 1 to 5: 1. it should be noted that when the ratio of the inorganic electroluminescent material to the inorganic long-afterglow photoluminescent material is too small, that is, the ratio of the inorganic electroluminescent material is too small, the luminance of the light emitted by the inorganic electroluminescent material is low, and when the ratio of the inorganic electroluminescent material to the inorganic long-afterglow photoluminescent material is too large, that is, the ratio of the inorganic long-afterglow photoluminescent material is too small, the luminance of the light emitted by the inorganic long-afterglow photoluminescent material is low. Of course, those skilled in the art can also reasonably adjust the ratio of the inorganic electroluminescent material and the inorganic long-afterglow photoluminescent material according to their own needs, and other ratio values are not listed here.

It should be noted that, in the embodiment of the present application, the light emitted from the light emitting structure 100 may be emitted from the side where the substrate 110 is located, or emitted from the side away from the substrate 110. If the light emitted from the light-emitting structure 100 is emitted from the side away from the substrate 110, each layer of the structure located on the side of the first light-emitting layer 130 away from the substrate 110 may have light-transmitting property. Taking the light emitting structure 100 shown in fig. 1 as an example, the second electrode layer 140 may have a light-transmitting property. Taking the light emitting structure 100 shown in fig. 5 as an example, the second electrode layer 140 and the protective layer 170 may have light transmittance. This is not to be taken as an example. If the light emitted from the light emitting structure 100 is emitted from the side of the substrate 110, the first electrode layer 120 and the substrate 110 may have light transmittance. Those skilled in the art can adjust the light transmittance of each layer included in the light emitting structure 100 according to actual requirements, and only need to enable the light emitted from the light emitting structure 100 to be smoothly emitted, which is not described in detail herein.

Fig. 6 is a schematic view of a fourth light emitting structure provided in the embodiment of the present application. Referring to fig. 6, on the basis of any one of the light emitting structures 100 provided in the embodiments of the present application, the light emitting structure 100 may further include a first insulating layer 125, and the first insulating layer 125 may be disposed between the first electrode layer 120 and the first light emitting layer 130. In this manner, by providing the first insulating layer 125 between the first electrode layer 120 and the first light-emitting layer 130, the driving voltage of the light-emitting structure 100 can be reduced, and the light-emitting efficiency of the light-emitting structure 100 can be improved.

In the light-emitting structure 100 shown in fig. 6, if light emitted from the light-emitting structure 100 is emitted from a side away from the substrate 110, the second electrode layer 140 may have light-transmitting property; if the light emitted from the light emitting structure 100 is emitted from the side of the substrate 110, the first electrode layer 120, and the first insulating layer 125 may have light transmittance.

Fig. 7 is a schematic view of a fifth light emitting structure provided in an embodiment of the present application. Referring to fig. 7, in addition to any one of the light emitting structures 100 provided in the embodiments of the present application, the light emitting structure 100 may further include a second insulating layer 135, and the second insulating layer 135 may be disposed between the first light emitting layer 130 and the second electrode layer 140. In this manner, by providing the second insulating layer 135 between the first light-emitting layer 130 and the second electrode layer 140, the driving voltage of the light-emitting structure 100 can be reduced, and the light-emitting efficiency of the light-emitting structure 100 can be improved.

In the light-emitting structure 100 shown in fig. 7, if light emitted from the light-emitting structure 100 is emitted from a side away from the substrate 110, the second insulating layer 135 and the second electrode layer 140 may have light-transmitting properties; if the light emitted from the light emitting structure 100 is emitted from the side where the substrate 110 is located, the substrate 110 and the first electrode layer 120 may have light transmittance.

It should be noted that, in the embodiment of the present application, both the first insulating layer 125 and the second insulating layer 135 may be disposed between the first electrode layer 120 and the first light emitting layer 130, and between the first light emitting layer 130 and the second electrode layer 140, so that the driving voltage of the light emitting structure 100 may be further reduced, and the light emitting efficiency of the light emitting structure 100 may be improved.

Alternatively, in an embodiment of the present application, the first electrode layer 120, the second electrode layer 140, or the third electrode layer 160 may be formed of a nano silver wire, PEDOT: one or more of a PASS compound and conductive graphene is made as a raw material. Note that PEDOT is a polymer of EDOT (3, 4-ethylenedioxythiophene monomer), and PASS may refer to polystyrene sulfonic acid. It should be noted that the first electrode layer 120, the second electrode layer 140, or the third electrode layer 160 can be formed by spraying or knife coating. It should also be noted that the raw materials or processes listed herein are only examples, and those skilled in the art can select other raw materials or other processes according to actual needs.

Alternatively, in an embodiment of the present application, the first light emitting layer 130 or the second light emitting layer 150 may be fabricated in the following manner. A mixed slurry including the inorganic electroluminescent material and the inorganic long afterglow photoluminescent material may be prepared first, and the first light emitting layer 130 or the second light emitting layer 150 may be fabricated by a spray coating or a blade coating method. Illustratively, in the embodiments of the present application, the slurry comprising the inorganic electroluminescent material and the inorganic long-lasting photoluminescent material may be mixed by a mixing method combining ultrasonic oscillation and mechanical stirring. It should be noted that the manufacturing processes listed here are only examples, and those skilled in the art can select other manufacturing processes according to actual needs.

Alternatively, in an embodiment of the present application, in a case where the light emitting structure 100 includes the protective layer 170, the protective layer 170 may be made of one or more of polyacrylic resin, epoxy resin, and amino resin as a raw material. The protective layer 170 may be formed by spraying or knife coating. It should be noted that the raw materials or processes listed herein are only examples, and those skilled in the art can select other raw materials or other processes according to actual needs.

In this way, in the embodiment of the present application, the first light-emitting layer 130 may be sandwiched between the first electrode layer 120 and the second electrode layer 140, and the inorganic electroluminescent material included in the first light-emitting layer 130 may be caused to emit light by applying a voltage to the first electrode layer 120 and the second electrode layer 140. The long-afterglow photoluminescent material included in the first light-emitting layer 130 may absorb light energy generated when the inorganic electroluminescent material emits light, and after the first electrode layer 120 and the second electrode layer 140 are powered off, the long-afterglow photoluminescent material included in the first light-emitting layer 130 may slowly release the absorbed light energy in the form of light. Thus, when the light emitting structure 100 is powered on, the light emitting structure 100 can perform electroluminescence, and when the light emitting structure 100 is powered off, the light emitting structure 100 can perform photoluminescence, so that the problem that light emitted by the electroluminescence structure is single can be solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the embodiments of the application, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A light emitting structure, characterized in that it comprises a substrate (110), a first electrode layer (120), a first light emitting layer (130) and a second electrode layer (140) arranged in that order; the first light-emitting layer (130) is a mixture layer comprising an inorganic electroluminescent material and an inorganic long afterglow photoluminescent material.

2. The light-emitting structure according to claim 1, wherein, when the first electrode layer (120) and the second electrode layer (140) are energized and the inorganic electroluminescent material comprised by the first light-emitting layer (130) emits light, the light-emitting structure exhibits a first pattern (210) of light spots; in case the first electrode layer (120) and the second electrode layer (140) are electrically disconnected and the inorganic long persistent photoluminescent material comprised by the first light emitting layer (130) is luminescent, the light emitting structure exhibits a light spot of a second pattern (220); the first pattern (210) is different from the second pattern (220).

3. The light-emitting structure according to claim 2, wherein a surface of the first electrode layer (120) or the second electrode layer (140) opposite to the first light-emitting layer (130) has a first shape, and a surface of the first light-emitting layer (130) opposite to the first electrode layer (120) has a second shape, and the first shape is different from the second shape.

4. The light-emitting structure according to claim 1, wherein when the first electrode layer (120) and the second electrode layer (140) are energized and the inorganic electroluminescent material comprised by the first light-emitting layer (130) emits light, the light-emitting structure emits light of a first color; in case the first electrode layer (120) and the second electrode layer (140) are powered off and the inorganic long persistent photoluminescent material comprised by the first light emitting layer (130) emits light, the light emitting structure emits light of a second color; the first color is different from the second color.

5. The light-emitting structure according to claim 1, further comprising a second light-emitting layer (150) and a third electrode layer (160), wherein the second light-emitting layer (150) is disposed on the second electrode layer (140), the third electrode layer (160) is disposed on the second light-emitting layer (150), and the second light-emitting layer (150) is a mixture layer comprising an inorganic electroluminescent material and an inorganic long afterglow photoluminescent material.

6. The light-emitting structure according to claim 5, wherein when the inorganic electroluminescent material included in the first light-emitting layer (130) emits light when the first electrode layer (120) and the second electrode layer (140) are energized, the light-emitting structure emits light of a third color; when the second electrode layer (140) and the third electrode layer (160) are energized and the inorganic electroluminescent material included in the second light-emitting layer (150) emits light, the light-emitting structure emits light of a fourth color; the third color and the fourth color are different.

7. The structure of claim 1, further comprising a protective layer (170), wherein the protective layer (170) is located at an outermost layer of the light emitting structure, and wherein the protective layer (170) faces away from the substrate (110).

8. The light-emitting structure according to claim 1, wherein the ratio of the inorganic electroluminescent material and the inorganic long-lasting photoluminescent material included in the mixture is 1: 1 to 5: 1.

9. the structure of claim 1, wherein light emitted from the light-emitting structure exits from a side of the substrate (110), and the first electrode layer (120) and the substrate (110) are both transparent; or the light emitted by the light-emitting structure is emitted from the side away from the substrate (110), and each layer structure on the side of the first light-emitting layer (130) away from the substrate (110) has light-transmitting property.

10. The light emitting structure according to claim 1, further comprising a first insulating layer (125) and a second insulating layer (135), the first insulating layer (125) being disposed between the first electrode layer (120) and the first light emitting layer (130), the second insulating layer (135) being disposed between the first light emitting layer (130) and the second electrode layer (140).

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