Light-emitting panel and light-emitting device

Abstract

The embodiment of the invention provides a light-emitting panel and a light-emitting device, relates to the technical field of illumination, and is used for realizing a color temperature adjustable function of the light-emitting device. The light-emitting panel comprises a substrate, a first electrode, a counter electrode, at least two light-emitting layers, an intermediate electrode and a plurality of connecting electrodes, the first electrode is arranged on one side of the substrate; the counter electrode is arranged on the side, away from the substrate, of the first electrode; the at least two light-emitting layers are arranged between the first electrode and the counter electrode; the intermediate electrode is arranged between two adjacent light-emitting layers; the plurality of connecting electrodes are arranged around the first electrode, the plurality of connecting electrodes are arranged at intervals, and the connecting electrodes and the first electrode are arranged at intervals; and the counter electrode and the middle electrode are electrically connected with at least one connecting electrode respectively. The light-emitting panel is used for emitting light.

Description

Technical Field

[0001] The present disclosure relates to the field of lighting technology, and in particular to a light-emitting panel and a light-emitting device. Background Art

[0002] In recent years, organic light-emitting diodes (OLEDs) have become a research hotspot in the fields of full-color display, backlight source and lighting due to their excellent performances such as soft light, close to natural light, wide viewing angle, fast response speed, light weight, high brightness, high efficiency and active light emission. However, most OLED lighting products on the market have only one constant color temperature, which cannot meet the higher demand for lighting products. Summary of the invention

[0003] The purpose of the embodiments of the present disclosure is to provide a light-emitting panel and a light-emitting device, which are used to realize the function of adjusting the color temperature of the light-emitting device.

[0004] To achieve the above objectives, the embodiments of the present disclosure provide the following technical solutions:

[0005] In one aspect, a light-emitting panel is provided. The light-emitting panel comprises: a substrate, a first electrode, a counter electrode, at least two light-emitting layers, an intermediate electrode and a plurality of connecting electrodes; the first electrode is arranged on one side of the substrate; the counter electrode is arranged on the side of the first electrode away from the substrate; at least two light-emitting layers are arranged between the first electrode and the counter electrode; the intermediate electrode is arranged between two adjacent light-emitting layers; a plurality of connecting electrodes are arranged around the first electrode, and the plurality of connecting electrodes and the connecting electrodes and the first electrode are arranged at intervals; the counter electrode and the intermediate electrode are electrically connected to at least one connecting electrode respectively.

[0006] In the above-mentioned light-emitting panel, since the light-emitting panel includes at least two light-emitting layers, an intermediate electrode and a plurality of connecting electrodes, at least two light-emitting layers are arranged between the first electrode and the counter electrode, the intermediate electrode is arranged between two adjacent light-emitting layers, and the counter electrode and the intermediate electrode are respectively electrically connected to at least one connecting electrode; for example, at least two light-emitting layers include: a first light-emitting layer and a second light-emitting layer, and the intermediate electrode includes a first intermediate electrode, therefore, the first electrode and the first intermediate electrode can provide the voltage required for the first light-emitting layer to emit light, the first intermediate electrode and the counter electrode can provide the voltage required for the second light-emitting layer to emit light, and the first light-emitting layer and the second light-emitting layer can emit light separately or simultaneously. When the first light-emitting layer and the second light-emitting layer emit light separately, and the colors of the light emitted by the first light-emitting layer and the second light-emitting layer are different, the same light-emitting panel can emit light of the color corresponding to the first light-emitting layer or the second light-emitting layer. When the first light-emitting layer and the second light-emitting layer emit light simultaneously, and the colors of the light emitted by the first light-emitting layer and the second light-emitting layer are different, by adjusting the magnitude of the voltage applied to the first light-emitting layer and / or the magnitude of the voltage applied to the second light-emitting layer, the ratio of the light-emitting color and the light-emitting brightness of the first light-emitting layer and the second light-emitting layer can be adjusted, and the light-emitting panel can realize the function of adjustable color temperature.

[0007] In some embodiments, the at least two light-emitting layers include: a first light-emitting layer and a second light-emitting layer, the plurality of connecting electrodes include a first connecting electrode and a second connecting electrode, and the intermediate electrode includes a first intermediate electrode;

[0008] The first electrode, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer and the counter electrode are stacked in sequence in a direction away from the substrate, and the first electrode, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer and the counter electrode overlap; the first intermediate electrode is electrically connected to the first connecting electrode, and the counter electrode is electrically connected to the second connecting electrode.

[0009] In some embodiments, the light-emitting panel has a first cross-section, which is perpendicular to the substrate, parallel to the direction in which the first intermediate electrode is connected to the first connecting electrode, and passes through the first connecting electrode; in the first cross-section, the boundary of the second light-emitting layer is located between the boundary of the first intermediate electrode and the boundary of the counter electrode, and the boundary of the first intermediate electrode is farther away from the center line of the first electrode than the boundary of the counter electrode; the center line passes through the center of the first electrode and is perpendicular to the substrate.

[0010] In some embodiments, the light-emitting panel has a second cross-section, which is perpendicular to the substrate, parallel to the direction in which the counter electrode is electrically connected to the second connecting electrode, and passes through the second connecting electrode; in the second cross-section, the boundary of the second light-emitting layer is located between the boundary of the first intermediate electrode and the boundary of the counter electrode, and the boundary of the first intermediate electrode is closer to the center line of the first electrode than the boundary of the counter electrode; the center line passes through the center of the first electrode and is perpendicular to the substrate.

[0011] In some embodiments, it also includes: a shading layer, which is arranged between the substrate and the first light-emitting layer, and the shading layer defines a first opening; the first electrode, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer and the counter electrode overlap at least within the first opening; in the orthographic projection onto the substrate, the shading layer covers the gap area between the first connecting electrode and the first electrode, and the gap area between the second connecting electrode and the first electrode.

[0012] In some embodiments, the shading layer is disposed on a side of the first electrode away from the substrate, and the first opening is located above the first electrode; the shading layer covers the edge where the first connecting electrode and the first electrode are close to each other, and the edge where the second connecting electrode and the first electrode are close to each other.

[0013] In some embodiments, both the first light-emitting layer and the second light-emitting layer extend along the sidewall of the light-shielding layer to a side of the light-shielding layer away from the substrate.

[0014] In some embodiments, the first intermediate electrode includes a first edge electrically connected to the first connecting electrode, and a second edge not electrically connected to the first connecting electrode; the first edge spans the light-shielding layer and is electrically connected to the first connecting electrode; and the second edge is located on a side of the light-shielding layer away from the substrate.

[0015] In some embodiments, the counter electrode includes a third edge electrically connected to the second connecting electrode, and a fourth edge not electrically connected to the second connecting electrode; the third edge spans the light-shielding layer and is electrically connected to the second connecting electrode; and the fourth edge is located on a side of the light-shielding layer away from the substrate.

[0016] In some embodiments, the shading layer is embedded between edges where the first connecting electrode and the first electrode are close to each other, and between edges where the second connecting electrode and the first electrode are close to each other; or, the shading layer is arranged between the substrate and the first electrode, and in an orthographic projection onto the substrate, the shading layer overlaps with edges where the first connecting electrode and the first electrode are close to each other, and overlaps with edges where the second connecting electrode and the first electrode are close to each other.

[0017] In some embodiments, the light-shielding layer includes a first boundary close to the first opening and a second boundary away from the first opening; in the orthographic projection onto the substrate, the boundary of the first light-emitting layer and the boundary of the second light-emitting layer are both located between the first boundary and the second boundary of the light-shielding layer.

[0018] In some embodiments, the first intermediate electrode includes a first edge electrically connected to the first connecting electrode, and a second edge not electrically connected to the first connecting electrode; the light-shielding layer includes a first boundary close to the first opening, and a second boundary away from the first opening; in the orthographic projection onto the substrate, the first edge covers the light-shielding layer and is electrically connected to the first connecting electrode, and the boundary of the second edge is located between the first boundary and the second boundary of the light-shielding layer.

[0019] In some embodiments, the counter electrode includes a third edge electrically connected to the second connecting electrode, and a fourth edge not electrically connected to the second connecting electrode; the light-shielding layer includes a first boundary close to the first opening, and a second boundary away from the first opening; in the orthographic projection onto the substrate, the third edge covers the light-shielding layer and is electrically connected to the second connecting electrode, and the boundary of the fourth edge is located between the first boundary and the second boundary of the light-shielding layer.

[0020] In some embodiments, along the electrical connection direction between the counter electrode and the second connecting electrode, a cross-sectional shape of the third edge of the counter electrode includes a step shape.

[0021] In some embodiments, the first electrode and the first intermediate electrode can transmit light, and the counter electrode can reflect light.

[0022] In some embodiments, the first light-emitting layer and the second light-emitting layer emit light of different colors.

[0023] In some embodiments, the first electrode includes an electrode body, and an extension sub-part connected to the electrode body, and the extension sub-part is arranged on at least one side of the electrode body; the electrode body, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer and the counter electrode overlap; the first connecting electrode and the second connecting electrode are arranged around the electrode body, and the first connecting electrode, the second connecting electrode and the extension sub-part are spaced apart from each other.

[0024] In some embodiments, the extension sub-portion is arranged on two opposite sides of the electrode portion body; and / or, along a first direction, the first connecting electrode is arranged on two opposite sides of the electrode portion body; and / or, along a second direction, the second connecting electrode is arranged on two opposite sides of the electrode portion body; the first direction and the second direction intersect.

[0025] In some embodiments, the light-emitting panel includes two groups of first connecting electrodes, each group of first connecting electrodes includes two first connecting electrodes respectively arranged on opposite sides of the electrode body along the first direction; on the same side of the electrode body, the extension sub-portion is located between the two first connecting electrodes.

[0026] In some embodiments, the multiple connecting electrodes also include a third connecting electrode, and the third connecting electrode is spaced apart from the first electrode, the first connecting electrode and the second connecting electrode; the third connecting electrode is arranged around the first electrode; the light-emitting panel also includes: a third light-emitting layer and a second intermediate electrode arranged on a side of the second light-emitting layer away from the substrate, the third light-emitting layer is farther away from the substrate than the second intermediate electrode, and the first electrode, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer, the second intermediate electrode, the third light-emitting layer and the counter electrode overlap; the second intermediate electrode is electrically connected to the third connecting electrode.

[0027] In some embodiments, the light-emitting panel has a third cross-section, which is perpendicular to the substrate, parallel to the direction in which the second intermediate electrode is electrically connected to the third connecting electrode, and passes through the third connecting electrode; in the third cross-section, the boundary of the third light-emitting layer is located between the boundary of the second intermediate electrode and the boundary of the counter electrode, and the boundary of the second intermediate electrode is farther away from the center line of the first electrode than the boundary of the counter electrode; the center line passes through the center of the first electrode and is perpendicular to the substrate.

[0028] In some embodiments, the first electrode, the middle electrode, and the counter electrode are configured to apply voltages, and the voltages of at least two of the first electrode, the middle electrode, and the counter electrode are not equal in magnitude.

[0029] In another aspect, a light emitting device is provided, comprising: a light emitting panel as described in any one of the above embodiments and a controller, wherein the controller is electrically connected to a first electrode and a plurality of connection electrodes of the light emitting panel.

[0030] The above-mentioned light-emitting device has the same structure and beneficial technical effects as the light-emitting panels provided in some of the above-mentioned embodiments, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0032] Figure 1 A top view of a light emitting panel according to some embodiments;

[0033] Figure 2 for Figure 1 A structural diagram of a first electrode and a connecting electrode in a light-emitting panel;

[0034] Figure 3 for Figure 1 A cross-sectional view of the light emitting panel along section line AA;

[0035] Figure 4 for Figure 1 A cross-sectional view of the light emitting panel along section line BB;

[0036] Figure 5 is a cross-sectional structural diagram of a light-emitting panel provided according to some embodiments;

[0037] Figure 6 A top view of another light emitting panel provided according to some embodiments;

[0038] Figure 7 for Figure 6 A structural diagram of a first electrode and a plurality of connecting electrodes in a light-emitting panel;

[0039] Figure 8 for Figure 6 A cross-sectional view of the light emitting panel along section line AA;

[0040] Fig. 9 for Figure 6 A cross-sectional view of the light emitting panel along section line BB;

[0041] Fig.10 for Figure 6 A cross-sectional view of the light emitting panel along section line DD;

[0042] Fig.11 for Figure 6 A stacked structure diagram of a first electrode, a light shielding layer and a first intermediate electrode in a light emitting panel;

[0043] Fig.12 for Figure 6 A stacked structure diagram of a first electrode, a light shielding layer and a counter electrode in a light emitting panel;

[0044] Fig.13 is a structural diagram of another light-emitting panel provided according to some embodiments;

[0045] Fig.14 for Fig.13 A cross-sectional view of the light emitting panel along section line AA;

[0046] Fig.15 for Fig.13 Another cross-sectional view of the light emitting panel along the section line AA;

[0047] Fig.16 for Fig.13 A cross-sectional view of the light emitting panel along section line BB;

[0048] Fig.17 for Fig.13 A cross-sectional view of the light emitting panel along section line CC;

[0049] Fig.18 for Fig.15 A stacked structure diagram of a light shielding layer, a first electrode and a first intermediate electrode in a light emitting panel;

[0050] Fig.19 for Fig.15 A stacked structure diagram of a light shielding layer, a first electrode and a counter electrode in a light emitting panel;

[0051] Fig. 20 A structural diagram of a first electrode and a plurality of connecting electrodes in a light-emitting panel provided according to some embodiments;

[0052] Fig.21 for Fig. 20 A cross-sectional view of the light emitting panel along section line DD;

[0053] Fig. 22 for Fig. 20 A cross-sectional view of the light emitting panel along section line EE;

[0054] Fig.23 for Fig. 20 A cross-sectional view of the light emitting panel along section line FF;

[0055] Fig.24 for Fig. 20 A cross-sectional view of the light emitting panel along section line DD;

[0056] Fig.25 for Fig. 20 A cross-sectional view of the light emitting panel along section line EE;

[0057] Fig.26 for Fig. 20 A cross-sectional view of the light emitting panel along section line FF;

[0058] Fig. 27 is a structural diagram of a light emitting device provided according to some embodiments;

[0059] Fig.28 It is a structural diagram of a light emitting device provided according to some other embodiments.

[0060] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0061] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0062] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0063] When describing some embodiments, the expression "connection" and its derivatives may be used. The term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0064] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0065] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0066] The use of "adapted to" or "configured to" herein is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0067] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0068] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0069] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0070] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are exaggerated for clarity. Therefore, variations in the shapes relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0071] The embodiment of the present disclosure provides a light emitting panel 1000, Figure 1 , Figure 2 , Figure 3 and Figure 4 The light emitting panel 1000 includes a substrate 100 , a first electrode 201 , a light emitting layer EL, and a counter electrode 202 which are stacked.

[0072] The material of the substrate 100 is a transparent material. For example, the substrate 100 may be a flexible substrate, which may include, for example, a polyethylene terephthalate (PET) substrate, a polyethylene naphthalate dicarboxylic acid glycol ester (PEN) substrate, or a colorless polyimide (CPI) substrate. In this case, the light-emitting panel 1000 may be a flexible light-emitting panel. Alternatively, a rigid substrate may be used, which may include, for example, a glass substrate, an ultra-thin glass (UTG), a polymethylmethacrylate (PMMA) substrate, a silicon substrate, or the like. In this case, the light-emitting panel 1000 may be a rigid light-emitting panel.

[0073] In some embodiments, continue to refer to Figure 3 or Figure 4 A buffer layer 101 may be further provided between the substrate 100 and the first electrode 201 to reduce stress generated between the first electrode 201 and the substrate 100 .

[0074] refer to Figure 2, the light-emitting panel 1000 further includes: a connecting electrode L, a first electrode 201 and a connecting electrode L arranged at intervals from each other. The first electrode 201 includes an electrode body 21, and an extension sub-part 22 connected to the electrode body 21, and the extension sub-part 22 can be arranged on two opposite sides of the electrode body 21; the first electrode 201, the light-emitting layer EL and the counter electrode 202 overlap; the connecting electrode L is arranged around the electrode body 21, and the connecting electrode L and the extension sub-part 22 are arranged at intervals from each other, and the first electrode 201 is electrically connected to the connecting electrode L. In this way, the voltage signal of the second electrode 202 is input through the connecting electrode L, and the voltage signal of the first electrode 201 is input through the extension sub-part 22, and a voltage difference is formed between the first electrode 201 and the counter electrode 202, which can provide the voltage required for the light-emitting layer EL to emit light, thereby making the light-emitting layer EL emit light.

[0075] The light-emitting layer EL includes an organic light-emitting layer, and the light-emitting layer EL may also include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. The color of the light emitted by the light-emitting layer EL may be any color, for example, red, blue, green, or white. The light-emitting color of the light-emitting layer EL is set according to the lighting scene of the actual application. For example, when the light-emitting panel 1000 is applied to the taillight of a car, the light-emitting layer EL may emit red light.

[0076] In the above-mentioned light-emitting panel 1000, the first electrode 201, the light-emitting layer EL and the counter electrode 202 can constitute an OLED light-emitting device. In this embodiment, the first electrode 201 is configured as the anode of the OLED light-emitting device, and the counter electrode 202 is configured as the cathode of the OLED light-emitting device. If a relatively high potential is applied to the first electrode 201 and a relatively low potential is applied to the counter electrode 202, holes are injected from the first electrode 201 into the organic light-emitting layer through the hole transport layer, and electrons are injected from the counter electrode 202 into the organic light-emitting layer through the electron transport layer, so that the holes from the first electrode 201 and the electrons from the counter electrode 202 are recombined in the organic light-emitting layer, and the light-emitting layer EL is excited to emit light by the energy generated at this time. In other embodiments, the first electrode 201 can be configured as the cathode of the OLED light-emitting device, and correspondingly, the counter electrode 202 is configured as the anode of the OLED light-emitting device.

[0077] In this embodiment, the first electrode 201 can transmit light, the counter electrode 202 can reflect light, and the light emitted by the light-emitting layer EL is emitted through the substrate 100. In other embodiments, the first electrode 201 can reflect light, the counter electrode 202 can transmit light, and the light emitted by the light-emitting layer EL is emitted in a direction away from the substrate 100.

[0078] refer to Figure 5The light-emitting panel 1000 further includes: a packaging structure 102, which is located on the side of the counter electrode 202 away from the substrate 100 and covers the side wall of the counter electrode 202 and part of the side wall of the light-emitting layer EL. The packaging structure 102 is used to package the counter electrode 202 and the light-emitting layer EL, which can prevent the counter electrode 202 from leaking electricity, and can also protect the counter electrode 202 and the light-emitting layer EL to prevent the external water and oxygen from corroding the light-emitting layer EL.

[0079] For example, the material of the package structure 102 may include silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxynitride (SiO x N y ) or a combination of one or more thereof.

[0080] Continue to refer Figure 5 The light-emitting panel 1000 further includes: a packaging glue layer 103 and a cover plate 104. The packaging glue layer 103 is located between the packaging structure 102 and the cover plate 104. The packaging glue layer 103 also covers the side wall of the packaging structure 102. The cover plate 104 is bonded to the side of the packaging glue layer 103 away from the substrate 100 through the packaging glue layer 103. The packaging glue layer 103 and the cover plate 104 realize the packaging of the first electrode 201, the light-emitting layer EL and the counter electrode 202.

[0081] The cover plate 104 may be made of tempered glass, strengthened glass, etc.

[0082] The connection electrode L and the extension sub-portion 22 in the above-mentioned light-emitting panel 1000 extend to the outside of the packaging structure 102 and the packaging glue layer 103 to connect with the external circuit, so that the external circuit can input the signal required for the light-emitting layer EL to emit light through the connection electrode L and the extension sub-portion 22.

[0083] Based on the above-mentioned light-emitting panel 1000, the inventors of the present disclosure found that the above-mentioned light-emitting panel 1000 has only one light-emitting layer EL, and therefore can only emit light of a single color and has only a constant color temperature, and cannot achieve color temperature adjustment to meet higher demands for lighting products.

[0084] In order to solve the above technical problems, the embodiment of the present disclosure provides a light emitting panel 1000, Figure 6 and Figure 7 , includes: a substrate 100, a first electrode 201, an opposing electrode 202, at least two light-emitting layers EL, an intermediate electrode 300 and a plurality of connecting electrodes L.

[0085] Among them, the first electrode 201 is arranged on one side of the substrate 100; the counter electrode 202 is arranged on the side of the first electrode 201 away from the substrate 100; at least two light-emitting layers EL are arranged between the first electrode 201 and the counter electrode 202; the intermediate electrode 300 is arranged between two adjacent light-emitting layers EL; a plurality of connecting electrodes L are arranged around the first electrode 201, and the plurality of connecting electrodes L and the connecting electrodes L and the first electrode 201 are spaced apart from each other; the counter electrode 202 and the intermediate electrode 300 are electrically connected to at least one connecting electrode L respectively.

[0086] The light-emitting panel 1000 provided in this embodiment includes at least two light-emitting layers EL, an intermediate electrode 300 and a plurality of connecting electrodes L, at least two light-emitting layers EL are arranged between the first electrode 201 and the counter electrode 202, the intermediate electrode 300 is arranged between two adjacent light-emitting layers EL, and the counter electrode 202 and the intermediate electrode 300 are electrically connected to at least one connecting electrode L respectively; for example, referring to Figure 6 , at least two light-emitting layers EL include: a first light-emitting layer EL1 and a second light-emitting layer EL2, and the intermediate electrode 300 includes a first intermediate electrode 301. Therefore, the first electrode 201 and the counter electrode 202 can provide the voltage required for the first light-emitting layer EL1 to emit light, and the intermediate electrode 300 and the counter electrode 202 can provide the voltage required for the second light-emitting layer EL2 to emit light, and the first light-emitting layer EL1 and the second light-emitting layer EL2 can emit light separately or simultaneously. When the first light-emitting layer EL1 and the second light-emitting layer EL2 emit light separately, and the colors of the light emitted by the first light-emitting layer EL1 and the second light-emitting layer EL2 are different, the same light-emitting panel can emit light of the color corresponding to the first light-emitting layer EL1 or the second light-emitting layer EL2. When the first light-emitting layer EL1 and the second light-emitting layer EL2 emit light simultaneously, and the colors of the light emitted by the first light-emitting layer EL1 and the second light-emitting layer EL2 are different, by adjusting the magnitude of the voltage applied to the first light-emitting layer EL1 and / or the magnitude of the voltage applied to the second light-emitting layer EL2, the ratio of the light-emitting color and the light-emitting brightness of the first light-emitting layer EL1 and the second light-emitting layer EL2 can be adjusted, so that the light-emitting panel 1000 can achieve the function of adjustable color temperature.

[0087] In some embodiments, the first electrode 201 and the middle electrode 300 can transmit light, the counter electrode 202 can reflect light, and the light emitted by at least two light-emitting layers EL is emitted through the substrate 100. In other embodiments, the first electrode 201 can reflect light, the middle electrode 300 and the counter electrode 202 can transmit light, and the light emitted by at least two light-emitting layers EL is emitted in a direction away from the substrate 100.

[0088] In some embodiments, continue to refer to Figure 6, at least two light-emitting layers EL include: a first light-emitting layer EL1 and a second light-emitting layer EL2, a plurality of connection electrodes L include a first connection electrode L1 and a first connection electrode L2, and the intermediate electrode 300 includes a first intermediate electrode 301; the first electrode 201, the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202 are stacked in sequence in a direction away from the substrate 100, and the first electrode 201, the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202 overlap; the first intermediate electrode 301 is electrically connected to the first connection electrode L1, and the counter electrode is electrically connected to the second connection electrode L2.

[0089] In the above-mentioned light emitting panel 1000 , the first electrode 201 , the middle electrode 300 and the counter electrode 202 are configured to apply voltages, and the voltages of at least two of the first electrode 201 , the middle electrode 300 and the counter electrode 202 are not equal in magnitude.

[0090] Exemplarily, in the case where the light-emitting panel 1000 includes the first electrode 201, the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202, the first electrode 201, the first light-emitting layer EL1 and the first intermediate electrode 301 may constitute a first OLED light-emitting device, and the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202 may constitute a second OLED light-emitting device. That is, the first intermediate electrode 301 may be an electrode in the first OLED light-emitting device or an electrode in the second OLED light-emitting device. For example, a relatively high potential is applied to the first electrode 201, and a relatively low potential is applied to the first intermediate electrode 301, so that the first electrode 201 can be used as an anode of the first OLED light-emitting device, and the first intermediate electrode 301 can be used as a cathode of the first OLED light-emitting device. On this basis, a lower potential than the first intermediate electrode 301 is applied to the counter electrode 202, so that the first intermediate electrode 301 can be used as an anode of the second OLED light-emitting device, and the counter electrode 202 can be used as a cathode of the second OLED light-emitting device. Therefore, by applying corresponding potentials to the first electrode 201, the first intermediate electrode 301 and the counter electrode 202, the first OLED light-emitting device and the second OLED light-emitting device can emit light separately or simultaneously.

[0091] In the above-mentioned light-emitting panel 1000, the first light-emitting layer EL1 includes: an organic light-emitting layer, and may also include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer arranged between the first electrode 201 and the organic light-emitting layer, and at least one of an electron injection layer, an electron transport layer, and a hole blocking layer arranged between the first intermediate electrode 301 and the organic light-emitting layer. The specific arrangement is based on actual needs, and this embodiment does not impose any limitation on this.

[0092] The second light-emitting layer EL2 may include: an organic light-emitting layer, and may also include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer arranged between the first intermediate electrode 301 and the organic light-emitting layer, and at least one of an electron injection layer, an electron transport layer, and a hole blocking layer arranged between the counter electrode 202 and the organic light-emitting layer. The specific arrangement is based on actual needs, and this embodiment does not impose any limitation on this.

[0093] In some embodiments, among the at least two light-emitting layers EL in the light-emitting panel 1000, there are at least two light-emitting layers EL that emit light of different colors. In this way, when the light-emitting panel 1000 emits light, the light emitted by the light-emitting panel 1000 is light formed by the superposition of different colors. In this way, different atmosphere effects can be created by adjusting the light intensity and proportion of different colors to meet different decoration and lighting needs.

[0094] Exemplarily, when the at least two light-emitting layers EL in the light-emitting panel 1000 include a first light-emitting layer EL1 and a second light-emitting layer EL2 , the colors of light emitted by the first light-emitting layer EL1 and the second light-emitting layer EL2 are different.

[0095] For example, when the color of the light emitted by the first light-emitting layer EL1 is red, the color of the light emitted by the second light-emitting layer EL2 may be any one of blue, green and white. When the color of the light emitted by the first light-emitting layer EL1 is blue, the color of the light emitted by the second light-emitting layer EL2 may be any one of red, green and white. When the color of the light emitted by the first light-emitting layer EL1 is green, the color of the light emitted by the second light-emitting layer EL2 may be any one of red, blue and white. When the color of the light emitted by the first light-emitting layer EL1 is white, the color of the light emitted by the second light-emitting layer EL2 may be any one of red, blue and green. In this way, the color of the light emitted by the light-emitting panel 1000 is the light after the superposition of two different lights emitted by the first light-emitting layer EL1 and the second light-emitting layer EL2, and by adjusting the magnitude of the voltage applied to the first light-emitting layer EL1 and / or the magnitude of the voltage applied to the second light-emitting layer EL2, the ratio of the light-emitting color and the light-emitting brightness of the first light-emitting layer EL1 and the second light-emitting layer EL2 can be adjusted, so that the light-emitting panel can realize the function of adjustable color temperature to meet different decoration and lighting requirements. The color of the light emitted by the first light-emitting layer EL1 and the second light-emitting layer EL2 can be set according to the needs of the actual application scenario.

[0096] In some embodiments, continue to refer to Figure 7 The first electrode 201 includes an electrode body 21 and an extension sub-part 22 connected to the electrode body 21, and the extension sub-part 22 is provided on at least one side of the electrode body 21; Figure 6 and Figure 7, the electrode body 21, the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202 overlap; Figure 7 The first connection electrode L1 and the second connection electrode L2 are arranged around the electrode body 21, and the first connection electrode L1, the second connection electrode L2 and the extension sub-part 22 are arranged at intervals from each other. The first connection electrode L1, the second connection electrode L2 and the extension sub-part 22 are arranged at intervals from each other to avoid short circuits between the first electrode 201, the first intermediate electrode 301 and the counter electrode 202.

[0097] Exemplary, reference Figure 7 The extension part 22 is disposed on two opposite sides of the electrode body 21. In this way, the voltage signal of the electrode body 21 is input from two opposite sides of the electrode body 21, which can ensure that the voltage at each part of the electrode body 21 is basically the same, thereby ensuring the uniformity of the light emitting brightness at each part of the light emitting panel 1000.

[0098] In some embodiments, reference Figure 7 , along the first direction X1, the first connection electrode L1 is arranged on two opposite sides of the electrode body 21; and / or, along the second direction X2, the second connection electrode L2 is arranged on two opposite sides of the electrode body 21; the first direction X1 and the second direction X2 intersect. In this way, the voltage signal of the first intermediate electrode 301 is input from two opposite sides of the first intermediate electrode 301, which can ensure that the voltage at each location of the first intermediate electrode 301 is basically the same; similarly, the voltage signal of the counter electrode 202 is input from two opposite sides of the counter electrode 202, which can ensure that the voltage at each location of the counter electrode 202 is basically the same. In this way, the uniformity of the light emitting brightness at each location of the light emitting panel 1000 can be ensured.

[0099] Exemplary, reference Figure 7 , the light-emitting panel 1000 includes two groups of first connection electrodes L1, each group of first connection electrodes L1 includes two first connection electrodes L1 respectively arranged on opposite sides of the electrode body 21 along the first direction X1; on the same side of the electrode body 21, the extension sub-portion 22 is located between the two first connection electrodes L1. In this way, the first intermediate electrode 301 can be electrically connected to the first connection electrodes L1 located at four different positions, further ensuring that the voltage at each location of the first intermediate electrode 301 is substantially consistent, so as to improve the uniformity of the light-emitting brightness at each location of the light-emitting panel 1000.

[0100] Combined with reference Figure 6 and Figure 8, the light emitting panel 1000 has a first cross section, wherein the first cross section is a cross section along the section line AA, the first cross section is perpendicular to the substrate 100, parallel to the direction in which the first intermediate electrode 301 is electrically connected to the first connection electrode L1, and passes through the first connection electrode L1; in the first cross section, the boundary of the second light emitting layer EL2 is located between the boundary of the first intermediate electrode 301 and the boundary of the counter electrode 202, and the boundary of the first intermediate electrode 301 is farther from the center line Y of the first electrode 201 than the boundary of the counter electrode 202; the center line Y passes through the center of the first electrode 201 and is perpendicular to the substrate 100. Due to the diode characteristics of the second light emitting layer EL2 itself, the first intermediate electrode 301 can be isolated from the counter electrode 202 to prevent the first intermediate electrode 301 and the counter electrode 202 from short-circuiting.

[0101] Combined with reference Figure 6 and Fig. 9 , the light-emitting panel 1000 has a second cross section, wherein the second cross section is a cross section along the section line BB, the second cross section is perpendicular to the substrate 100, parallel to the direction in which the counter electrode 202 is electrically connected to the second connection electrode L2, and passes through the second connection electrode L2; in the second cross section, the boundary of the second light-emitting layer EL2 is located between the boundary of the first intermediate electrode 301 and the boundary of the counter electrode 202, and the boundary of the first intermediate electrode 301 is closer to the center line Y of the first electrode 201 than the boundary of the counter electrode 202; the center line Y passes through the center of the first electrode 201 and is perpendicular to the substrate 100. In the second cross section, the second light-emitting layer EL2 completely wraps the first intermediate electrode 301, so that the first intermediate electrode 301 and the counter electrode 202 are isolated from each other, and a short circuit between the first intermediate electrode 301 and the counter electrode 202 is avoided.

[0102] Combined with reference Figure 6 and Fig.10 , the light-emitting panel 1000 has a fourth cross section, wherein the fourth cross section is a cross section along the section line DD, the fourth cross section is perpendicular to the substrate 100, parallel to the direction in which the electrode body 21 is connected to the extension sub-section 22, and passes through the extension sub-section 22. In the fourth cross section, the boundary of the counter electrode 202 is located within the boundary range of the second light-emitting layer EL2, and the boundary of the second light-emitting layer EL2 is located within the boundary range of the first intermediate electrode 301, and the first intermediate electrode 301 does not overlap with the extension sub-section 22, or the boundary of the first intermediate electrode 301 is located within the boundary range of the second light-emitting layer EL2. As long as the second light-emitting layer EL2 can isolate the first intermediate electrode 301 from the counter electrode 202, and the first intermediate electrode 301 does not overlap with the extension sub-section 22, a short circuit between the first intermediate electrode 301 and the counter electrode 202 and a short circuit between the first intermediate electrode 301 and the first electrode 201 can be avoided.

[0103] When the light emitting panel 1000 includes the first electrode 201, the first light emitting layer EL1, the first intermediate electrode 301, the second light emitting layer EL2 and the counter electrode 202, the first electrode 201 and the first intermediate electrode 301 can transmit light, the counter electrode 202 can reflect light, and the light emitted by the first light emitting layer EL1 and the second light emitting layer EL2 is emitted through the substrate 100. Alternatively, the first electrode 201 can reflect light, the first intermediate electrode 301 and the counter electrode 202 can transmit light, and the light emitted by the first light emitting layer EL1 and the second light emitting layer EL2 is emitted in a direction away from the substrate 100.

[0104] The inventors also discovered that during the preparation process of the light-emitting panel 1000, especially when the light-emitting panel 1000 includes at least two light-emitting layers EL, due to the influence of equipment precision and alignment deviation, the edges of the light-emitting areas of the at least two light-emitting layers EL may be differentiated, thereby causing light leakage at the edges of the light-emitting panel 1000 and poor overall display effect of the light-emitting panel 1000.

[0105] To solve the above technical problems, in some embodiments, reference Figure 6 The light-emitting panel 1000 also includes: a shading layer T, which is arranged between the substrate 100 and the first light-emitting layer EL1, and the shading layer T defines a first opening K1. The first electrode 201, the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202 overlap at least within the first opening K1; in the orthographic projection onto the substrate 100, the shading layer T covers the gap area between the first connecting electrode L1 and the first electrode 201, and the gap area between the second connecting electrode L2 and the first electrode 201.

[0106] The shading layer T can correct the light emitting areas of the first light emitting layer EL1 and the second light emitting layer EL2, that is, the first light emitting layer EL1 and the second light emitting layer EL2 both emit light outward from the first opening K1, so that the light emitting areas of the first light emitting layer EL1 and the second light emitting layer EL2 are the same, thereby improving the light emitting quality of the light emitting panel 1000.

[0107] Exemplary, reference Figure 8 , Fig. 9 and Fig.10 The shading layer T is arranged on the side of the first electrode 201 away from the substrate 100, and the first opening K1 is located above the first electrode 201; the shading layer T covers the edge where the first connecting electrode L1 and the first electrode 201 are close to each other, and the edge where the second connecting electrode L2 and the first electrode 201 are close to each other.

[0108] In addition, the shading layer T covers the edges where the first connecting electrode L1 and the first electrode 201 are close to each other, and the edges where the second connecting electrode L2 and the first electrode 201 are close to each other, that is, the shading layer T separates the first connecting electrode L1 and the first electrode 201, and separates the second connecting electrode L2 and the first electrode 201, so as to avoid a short circuit between the first intermediate electrode 301 and the first electrode 201, and avoid a short circuit between the counter electrode 202 and the first electrode 201.

[0109] The shape and size of the first opening K1 can be set according to the needs of the actual application scenario. For example, the shape of the first opening K1 can be a triangle, rhombus, rectangle, circle, ellipse, regular pentagon or regular hexagon, etc., which is not limited in this embodiment.

[0110] Continue to refer Figure 8 , Fig. 9 or Fig.10 , the first light-emitting layer EL1 and the second light-emitting layer EL2 both extend along the side wall of the light-shielding layer T to the side of the light-shielding layer T away from the substrate 100. In this way, it can be ensured that the light-emitting area of ​​the first light-emitting layer EL1 and the second light-emitting layer EL2 is larger than the first opening K1, and the light-emitting area of ​​the first light-emitting layer EL1 and the second light-emitting layer EL2 can both cover the first opening K1. The light emitted by the light-emitting panel 1000 is the light after the first light-emitting layer EL1 and the second light-emitting layer EL2 are stacked, so that the light-emitting panel 1000 can realize the function of adjustable color temperature and improve the light-emitting quality of the light-emitting panel 1000.

[0111] In some embodiments, the overlapping area of ​​the first electrode 201, the first light-emitting layer EL1 and the first intermediate electrode 301 may be greater than the overlapping area of ​​the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202. Alternatively, the overlapping area of ​​the first electrode 201, the first light-emitting layer EL1 and the first intermediate electrode 301 may be equal to the overlapping area of ​​the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202. Alternatively, the overlapping area of ​​the first electrode 201, the first light-emitting layer EL1 and the first intermediate electrode 301 may be smaller than the overlapping area of ​​the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202. As long as the light-emitting areas of the first light-emitting layer EL1 and the second light-emitting layer EL2 can cover the first opening K1, the light emitted by the light-emitting panel 1000 is the light emitted from the first opening K1 after the first light-emitting layer EL1 and the second light-emitting layer EL2 are stacked, and there will be no edge light leakage.

[0112] refer to Fig.11The first intermediate electrode 301 includes a first edge B1 electrically connected to the first connection electrode L1, and a second edge B2 not electrically connected to the first connection electrode L1; the first edge B1 crosses the light shielding layer T and is electrically connected to the first connection electrode L1; the second edge B2 is located on a side of the light shielding layer T away from the substrate 100. In this way, while ensuring that the first intermediate electrode 301 is electrically connected to the first connection electrode L1, a short circuit between the first intermediate electrode 301 and the first electrode 201, or between the first intermediate electrode 301 and the second connection electrode L2 can be avoided.

[0113] It should be noted that in order to clearly show the positional relationship between the various film layers in the figure, Fig.11 Only the positional relationship among the first electrode 201 , the light shielding layer T and the first intermediate electrode 301 is illustrated.

[0114] refer to Fig.12 , the counter electrode 202 includes a third edge B3 electrically connected to the second connection electrode L2 and a fourth edge B4 not electrically connected to the second connection electrode L2; the third edge B3 crosses the light shielding layer T and is electrically connected to the second connection electrode L2; the fourth edge B4 is located on the side of the light shielding layer T away from the substrate 100. In this way, while ensuring that the counter electrode 202 is electrically connected to the second connection electrode L2, a short circuit between the counter electrode 202 and the first electrode 201, or between the counter electrode 202 and the first connection electrode L1 can be avoided.

[0115] Continue to refer Fig. 9 When the light shielding layer T is disposed between the substrate 100 and the first light emitting layer EL1, along the electrical connection direction between the counter electrode 202 and the second connection electrode L2, the cross-sectional shape of the third edge B3 of the counter electrode 202 includes a step shape. In this way, the step difference of the counter electrode 202 can be reduced, and the risk of the counter electrode 202 breaking can be reduced, so as to improve the structural reliability of the light emitting panel 1000.

[0116] It should be noted that in order to clearly show the positional relationship between the various film layers in the figure, Fig.12 Only the positional relationship among the first electrode 201 , the light shielding layer T and the counter electrode 202 is illustrated.

[0117] Combined with reference Figure 8 , Fig. 9 and Fig.10 When the light-emitting panel 1000 includes a first electrode 201, a first light-emitting layer EL1, a first intermediate electrode 301, a second light-emitting layer EL2 and a counter electrode 202, the first electrode 201 and the first connecting electrode L1 and the second connecting electrode L2 among the plurality of connecting electrodes also extend out of the encapsulation glue layer 103, which is beneficial for connecting the first electrode 201, the first intermediate electrode 301 and the counter electrode 202 with a controller in a light-emitting device using the light-emitting panel 1000.

[0118] exist Figure 8 , Fig. 9 or Fig.10 In the light emitting panel 1000 shown, the light shielding layer T may include a pixel defining layer, and the material of the pixel defining layer includes a light shielding material.

[0119] In some embodiments, reference Fig.13 The shading layer T is embedded between the edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, and between the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other; or, the shading layer T is arranged between the substrate 100 and the first electrode 201, and in the orthographic projection onto the substrate 100, the shading layer T overlaps with the edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, and overlaps with the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other.

[0120] For example, reference Fig.14 The shading layer T is embedded between the edges of the first connection electrode L1 and the first electrode 201, and between the edges of the second connection electrode L2 and the first electrode 201. In this way, the shading portion T can also prevent a short circuit from occurring between the first intermediate electrode 301 and the first electrode 201, or between the first intermediate electrode 301 and the second connection electrode L2.

[0121] For example, reference Fig.15 , the light shielding layer T is provided between the substrate 100 and the first electrode 201, specifically, the light shielding layer T may be located between the substrate 100 and the buffer layer 101. In the orthographic projection to the substrate 100, the light shielding layer T may overlap with the edge of the first connection electrode L1 and the first electrode 201 close to each other, and overlap with the edge of the second connection electrode L2 and the first electrode 201 close to each other. In this case, the first light emitting layer EL1 is also located between the first connection electrode L1 and the first electrode 201, and between the second connection electrode L2 and the first electrode 201, so that the first light emitting layer EL1 can also prevent the first intermediate electrode 301 and the first electrode 201, or the first intermediate electrode 301 and the second connection electrode L2 from short circuiting.

[0122] In this embodiment, the structure of the light emitting panel 1000 is schematically described by assuming that the light shielding layer T is located between the substrate 100 and the buffer layer 101 .

[0123] In addition, the shading layer T is embedded between the edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, and between the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other; or, the shading layer T is disposed between the substrate 100 and the first electrode 201, that is, the shading layer T is disposed between the substrate 100 and the buffer layer 101. Compared with the shading layer T being disposed on the side of the first electrode 201 away from the substrate 100, and the first opening K being located above the first electrode 201, the shading layer T is embedded between the edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, so that and between the edges that are close to each other between the second connecting electrode L2 and the first electrode 201; or, when the shading layer T is arranged between the substrate 100 and the first electrode 201, the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202 do not need to climb, thereby avoiding the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202 climbing on the shading layer T, causing the first light-emitting layer EL1 and the second light-emitting layer EL2 to become thinner at the climbing position, thereby causing the risk of short-circuiting between the first intermediate electrode 301 and the counter electrode 202.

[0124] refer to Fig.14 or Fig.15 , the light shielding layer T includes a first boundary T1 close to the first opening K1, and a second boundary T2 away from the first opening K1; in the orthographic projection onto the substrate 100, the boundary of the first light-emitting layer EL1 and the boundary of the second light-emitting layer E2 are both located between the first boundary T1 and the second boundary T2 of the light shielding layer T. In this way, it can be ensured that the light-emitting area of ​​the first light-emitting layer EL1 and the second light-emitting layer EL2 is larger than the first opening K1, and the light-emitting area of ​​the first light-emitting layer EL1 and the second light-emitting layer EL2 can both cover the first opening K1. The light emitted by the light-emitting panel 1000 is the light after the first light-emitting layer EL1 and the second light-emitting layer EL2 are stacked, so that the light-emitting panel 1000 can realize the function of adjustable color temperature while improving the light-emitting quality of the light-emitting panel 1000.

[0125] Combined with reference Fig.15 , Fig.16 , Fig.17 and Fig.18 The first intermediate electrode 301 includes a first edge B1 electrically connected to the first connection electrode L1, and a second edge B2 not electrically connected to the first connection electrode L1; in the orthographic projection onto the substrate 100, the first edge B1 covers the light shielding layer T and is electrically connected to the first connection electrode L1, and the boundary of the second edge B2 is located between the first boundary T1 and the second boundary T2 of the light shielding layer T. In this way, while ensuring the overlap between the first intermediate electrode 301 and the first connection electrode L1, a short circuit between the first intermediate electrode 301 and the first electrode 201, or between the first intermediate electrode 301 and the second connection electrode L2 can be avoided.

[0126] It should be noted that in order to clearly show the positional relationship between the various film layers in the figure, Fig.18 Only the positional relationship among the light shielding layer T, the first electrode 201 and the first intermediate electrode 301 is shown.

[0127] Combined with reference Fig.15 , Fig.16 , Fig.17 and Fig.19 , the counter electrode 202 includes a third edge B3 electrically connected to the second connection electrode L2, and a fourth edge B4 not electrically connected to the second connection electrode L2; in the orthographic projection onto the substrate 100, the third edge B3 covers the light shielding layer T and is electrically connected to the second connection electrode L2, and the boundary of the fourth edge B4 is located between the first boundary T1 and the second boundary T2 of the light shielding layer T. In this way, while ensuring that the counter electrode 202 is electrically connected to the second connection electrode L2, a short circuit between the counter electrode 202 and the first electrode 201, or between the counter electrode 202 and the first connection electrode L1 can be avoided.

[0128] It should be noted that in order to clearly show the positional relationship between the various film layers in the figure, Fig.19 Only the positional relationship among the light shielding layer T, the first electrode 201 and the counter electrode 202 is shown.

[0129] In some embodiments, the first electrode 201 and the first intermediate electrode 301 can transmit light, the counter electrode 202 can reflect light, and the material of the light shielding layer T includes a light shielding material. Therefore, after the first light-emitting layer EL1 and the second light-emitting layer EL2 emit light, the light-emitting panel 1000 emits light in the direction of the substrate 100. Since the material of the light shielding layer T includes a light shielding material, the light shielding layer T can correct the light-emitting areas of the first light-emitting layer EL1 and the second light-emitting layer EL2, so that the first light-emitting layer EL1 and the second light-emitting layer EL2 both emit light outward from the first opening K1. In this way, the light-emitting areas of the first light-emitting layer EL1 and the second light-emitting layer EL2 are the same, which can avoid the light leakage at the edge of the light-emitting panel 1000 due to the different light-emitting areas of the first light-emitting layer EL1 and the second light-emitting layer EL2, thereby improving the light-emitting quality of the light-emitting panel 1000.

[0130] In some embodiments, reference Fig. 20 The plurality of connection electrodes L further include a third connection electrode L3 , and the third connection electrode L3 is spaced apart from the first electrode 201 , the first connection electrode L1 , and the second connection electrode L2 ; the third connection electrode L3 is disposed around the first electrode 201 .

[0131] Exemplary, reference Fig. 20The light emitting panel 1000 includes two groups of third connection electrodes L3, each group of third connection electrodes L3 includes two third connection electrodes L3 respectively arranged on two opposite sides of the electrode body 21 along the first direction X1; on the same side of the electrode body 21, the extension sub-portion 22 is located between the two third connection electrodes L3. Each third connection electrode L3 is located between the extension sub-portion 22 and the first connection electrode L1.

[0132] The third connection electrode L3 may be arranged in other ways, as long as it is spaced apart from the first electrode 201 , the first connection electrode L1 and the second connection electrode L2 and is arranged around the electrode body 21 .

[0133] On the basis that the connection electrode L of the light emitting panel 1000 further includes a third connection electrode L3, Fig.21 , the light-emitting panel 1000 further includes: a third light-emitting layer EL3 and a second intermediate electrode 302 disposed on a side of the second light-emitting layer EL2 away from the substrate 100, the third light-emitting layer EL3 is farther away from the substrate 100 than the second intermediate electrode 302, and the first electrode 201, the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2, the second intermediate electrode 302, the third light-emitting layer EL3 and the counter electrode 202 overlap; the second intermediate electrode 302 is electrically connected to the third connection electrode L3. The third connection electrode L3 is spaced apart from the first electrode 201, the first connection electrode L1 and the second connection electrode L2, so as to avoid short circuits between the first electrode 201, the first intermediate electrode 301, the second intermediate electrode 302 and the counter electrode 202.

[0134] In the light-emitting panel 1000 provided in the above embodiment, the first intermediate electrode 301 is electrically connected to the first connection electrode L1, the second intermediate electrode 302 is electrically connected to the third connection electrode L3, and the counter electrode 202 is electrically connected to the second connection electrode L2. Therefore, the first electrode 201 and the first intermediate electrode 301 can provide the voltage required for the first light-emitting layer EL1 to emit light, the first intermediate electrode 301 and the second intermediate electrode 302 can provide the voltage required for the second light-emitting layer EL2 to emit light, the second intermediate electrode 302 and the counter electrode 202 can provide the voltage required for the third light-emitting layer EL3 to emit light, and the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 can emit light separately or simultaneously. When the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 emit light separately, and the colors of the light emitted by the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 are different, the same light-emitting panel can emit light of the color corresponding to the first light-emitting layer EL1, the second light-emitting layer EL2 or the third light-emitting layer EL3. When the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 emit light at the same time, and the colors of the light emitted by the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 are different, by adjusting the voltage applied to the first light-emitting layer EL1, and / or the voltage applied to the second light-emitting layer EL2, and / or the voltage applied to the third light-emitting layer EL3, the ratio of the light-emitting color and the light-emitting brightness of the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 can be adjusted, so that the light-emitting panel 1000 can realize the function of adjustable color temperature.

[0135] The light emitting panel 1000 further includes: a third light emitting layer EL3 and a second intermediate electrode 302, the first electrode 201, the first intermediate electrode 301 and the second intermediate electrode 302 can transmit light, the counter electrode 202 can reflect light, and the light emitted by the first light emitting layer EL1, the second light emitting layer EL2 and the third light emitting layer EL3 is emitted through the substrate 100. Alternatively, the first electrode 201 can reflect light, the first intermediate electrode 301, the second intermediate electrode 302 and the counter electrode 202 can transmit light, and the light emitted by the first light emitting layer EL1, the second light emitting layer EL2 and the third light emitting layer EL3 is emitted in a direction away from the substrate 100.

[0136] In the case where the light emitting panel 1000 includes the first electrode 201, the first light emitting layer EL1, the first intermediate electrode 301, the second light emitting layer EL2, the second intermediate electrode 302, the third light emitting layer EL3 and the counter electrode 202, wherein the first electrode 201, the first light emitting layer EL1 and the first intermediate electrode 301 can constitute a first OLED light emitting device, the first intermediate electrode 301, the second light emitting layer EL2 and the second intermediate electrode 302 can constitute a second OLED light emitting device, and the second intermediate electrode 302, the third light emitting layer EL3 and the counter electrode 202 can constitute a third OLED light emitting device. That is, the first intermediate electrode 301 can be an electrode in the first OLED light emitting device or an electrode in the second OLED light emitting device, and the second intermediate electrode 302 can be an electrode in the second OLED light emitting device or an electrode in the third OLED light emitting device. For example, a relatively high potential is applied to the first electrode 201, and a relatively low potential is applied to the first intermediate electrode 301, so that the first electrode 201 can be used as an anode of the first OLED light emitting device, and the first intermediate electrode 301 can be used as a cathode of the first OLED light emitting device. On this basis, a lower potential is applied to the second middle electrode 302 than the first middle electrode 301, so that the first middle electrode 301 can be used as the anode of the second OLED light-emitting device, and the second middle electrode 302 can be used as the cathode of the second OLED light-emitting device. On this basis, a lower potential is applied to the counter electrode 202 than the second middle electrode 302, so that the second middle electrode 302 can be used as the anode of the third OLED light-emitting device, and the counter electrode 202 can be used as the cathode of the third OLED light-emitting device. Therefore, by applying corresponding potentials to the first electrode 201, the first middle electrode 301, the second middle electrode 302 and the counter electrode 202, the first OLED light-emitting device, the second OLED light-emitting device and the third OLED light-emitting device can emit light separately or simultaneously.

[0137] In the above-mentioned light-emitting panel 1000, the third light-emitting layer EL3 includes: an organic light-emitting layer, and may also include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer arranged between the second intermediate electrode 302 and the organic light-emitting layer, and at least one of an electron injection layer, an electron transport layer, and a hole blocking layer arranged between the counter electrode 202 and the organic light-emitting layer. The specific arrangement is based on actual needs, and this embodiment does not impose any limitation on this.

[0138] In some embodiments, the first light-emitting layer EL1 , the second light-emitting layer EL2 , and the third light-emitting layer EL3 emit lights of different colors.

[0139] Exemplarily, the color of the light emitted by the first light-emitting layer EL1 includes any one of red, blue, green and white, the color of the light emitted by the second light-emitting layer EL2 includes any one of red, blue, green and white, and the color of the light emitted by the third light-emitting layer EL3 includes any one of red, blue, green and white, as long as the colors of the light emitted by the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 are different. In this way, the color of the light emitted by the light-emitting panel 1000 is the light after the superposition of three different lights emitted by the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3, and by adjusting the magnitude of the voltage applied to the first light-emitting layer EL1, and / or the magnitude of the voltage applied to the second light-emitting layer EL2, and / or the magnitude of the voltage applied to the third light-emitting layer EL3, the ratio of the light-emitting color and the light-emitting brightness of the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 can be adjusted, so that the light-emitting panel can realize the function of adjustable color temperature. The colors of the light emitted by the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 can be set according to the needs of the actual application scenario.

[0140] For example, the color of the light emitted by the first light-emitting layer EL1 may be red, the color of the light emitted by the second light-emitting layer EL2 may be blue, and the color of the light emitted by the third light-emitting layer EL3 may be green. Alternatively, the color of the light emitted by the first light-emitting layer EL1 may be blue, the color of the light emitted by the second light-emitting layer EL2 may be red, and the color of the light emitted by the third light-emitting layer EL3 may be green. Alternatively, the color of the light emitted by the first light-emitting layer EL1 may be green, the color of the light emitted by the second light-emitting layer EL2 may be red, and the color of the light emitted by the third light-emitting layer EL3 may be blue. Alternatively, the color of the light emitted by the first light-emitting layer EL1 may be green, the color of the light emitted by the second light-emitting layer EL2 may be red, and the color of the light emitted by the third light-emitting layer EL3 may be white. These are not listed here one by one, as long as the colors of the light emitted by the first light-emitting layer EL1, the second light-emitting layer EL2, and the third light-emitting layer EL3 are different.

[0141] refer to Fig.21, the light emitting panel 1000 has a third cross section, wherein the third cross section is a cross section along the section line DD, the third cross section is perpendicular to the substrate 100, parallel to the direction in which the second intermediate electrode 302 is electrically connected to the third connection electrode L3, and passes through the third connection electrode L3; in the third cross section, the boundary of the third light emitting layer EL3 is located between the boundary of the second intermediate electrode 302 and the boundary of the counter electrode 202, and the boundary of the second intermediate electrode 302 is farther from the center line Y of the first electrode 201 than the boundary of the counter electrode 202; the center line Y passes through the center of the first electrode 201 and is perpendicular to the substrate 100. Due to the diode characteristics of the third light emitting layer EL3 itself, the second intermediate electrode 302 can be isolated from the counter electrode 202 to prevent the second intermediate electrode 302 and the counter electrode 202 from short-circuiting.

[0142] Continue to refer Fig.21 In the third cross section, the boundary of the second light emitting layer EL2 is located between the boundary of the first intermediate electrode 301 and the boundary of the second intermediate electrode 302, and the boundary of the second intermediate electrode 302 is farther from the center line Y of the first electrode 201 than the boundary of the first intermediate electrode 301. Due to the diode characteristics of the second light emitting layer EL2 itself, the first intermediate electrode 301 and the second intermediate electrode 302 can be isolated to prevent the first intermediate electrode 301 and the second intermediate electrode 302 from short-circuiting.

[0143] refer to Fig. 22 , the light emitting panel 1000 has a fifth cross section, wherein the fifth cross section is a cross section along the section line EE, the fifth cross section is perpendicular to the substrate 100, parallel to the direction in which the counter electrode 202 is electrically connected to the second connection electrode L2, and passes through the second connection electrode L2; in the fifth cross section, the boundary of the third light emitting layer EL3 is located between the boundary of the second intermediate electrode 302 and the boundary of the counter electrode 202, and the boundary of the second intermediate electrode 302 is closer to the center line Y of the first electrode 201 than the boundary of the counter electrode 202. Due to the diode characteristics of the third light emitting layer EL3 itself, the second intermediate electrode 302 can be isolated from the counter electrode 202 to prevent the second intermediate electrode 302 and the counter electrode 202 from short-circuiting.

[0144] Continue to refer Fig. 22 In the fifth cross section, the boundary of the second light-emitting layer EL2 is located between the boundary of the first intermediate electrode 301 and the boundary of the counter electrode 202, and the boundary of the counter electrode 202 is farther from the center line Y of the first electrode 201 than the boundary of the first intermediate electrode 301. Due to the diode characteristics of the second light-emitting layer EL2 itself, the first intermediate electrode 301 can be isolated from the counter electrode 202 to avoid a short circuit between the first intermediate electrode 301 and the counter electrode 202. In the fifth cross section, the boundary of the second intermediate electrode 302 is also located within the boundary range of the second light-emitting layer EL2, and a short circuit between the first intermediate electrode 301 and the second intermediate electrode 302 can also be avoided.

[0145] refer to Fig.23 The light-emitting panel 1000 has a sixth cross section, wherein the sixth cross section is a cross section along the section line FF, the sixth cross section is perpendicular to the substrate 100, parallel to the direction in which the first intermediate electrode 301 is electrically connected to the first connection electrode L1, and passes through the first connection electrode L1; in the sixth cross section, the boundary of the counter electrode 202 is located within the boundary range of the third light-emitting layer EL3, and the boundary of the second intermediate electrode 302 is located within the range of the third light-emitting layer EL3. Due to the diode characteristics of the third light-emitting layer EL3 itself, the second intermediate electrode 302 can be isolated from the counter electrode 202 to avoid a short circuit between the second intermediate electrode 302 and the counter electrode 202.

[0146] Continue to refer Fig.23 In the sixth cross section, the boundary of the second light emitting layer EL2 is located between the boundary of the first intermediate electrode 301 and the boundary of the second intermediate electrode 302, and the boundary of the second intermediate electrode 302 is closer to the center line Y of the first electrode 201 than the boundary of the first intermediate electrode 301. Due to the diode characteristics of the second light emitting layer EL2 itself, the first intermediate electrode 301 and the second intermediate electrode 302 can be isolated to prevent the first intermediate electrode 301 and the second intermediate electrode 302 from being short-circuited.

[0147] Combined with reference Fig.21 , Fig. 22 and Fig.23 When the light-emitting panel 1000 includes a first electrode 201, a first light-emitting layer EL1, a first intermediate electrode 301, a second light-emitting layer EL2, a second intermediate electrode 302, a third light-emitting layer EL3 and a counter electrode 202, the first electrode 201 and the first connecting electrode L1, the second connecting electrode L2 and the third connecting electrode L3 among the multiple connecting electrodes also extend out of the encapsulation glue layer 103, which is beneficial for connecting the first electrode 201, the first intermediate electrode 301, the second intermediate electrode 302 and the counter electrode 202 with a controller in a light-emitting device using the light-emitting panel 1000.

[0148] In some embodiments, in conjunction with reference Fig.21 , Fig. 22 and Fig.23In the case where the light-emitting panel 1000 includes a first light-emitting layer EL1, a second light-emitting layer EL2 and a third light-emitting layer EL3, the light-emitting panel 1000 also includes: a shading layer T, which is arranged between the substrate 100 and the first light-emitting layer EL1, and the shading layer T defines a first opening K1, and the first electrode 201, the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2, the second intermediate electrode 302, the third light-emitting layer EL3, and the counter electrode 202 overlap at least within the first opening K1; in the orthographic projection onto the substrate 100, the shading layer T covers the gap area between the first connecting electrode L1 and the first electrode 201, and the gap area between the second connecting electrode L2 and the first electrode 201. The shading layer T can correct the light-emitting areas of the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3, that is, the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 all emit light outward from the first opening K1, so that the light-emitting areas of the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 are the same, thereby avoiding the phenomenon of light leakage and aperture formation at the edge of the light-emitting panel 1000 due to different light-emitting areas of the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3, thereby improving the light-emitting quality of the light-emitting panel 1000.

[0149] Exemplary, continue to combine reference Fig.21 , Fig. 22 and Fig.23 , the light shielding layer T is arranged on the side of the first electrode 201 away from the substrate 100, and the first opening K1 is located above the first electrode 201; the light shielding layer T covers the edge where the first connection electrode L1 and the first electrode 201 are close to each other, the edge where the second connection electrode L2 and the first electrode 201 are close to each other, and the edge where the third connection electrode L3 and the first electrode 201 are close to each other, and the first light-emitting layer EL1, the second light-emitting layer EL2, and the third light-emitting layer EL3 are all extended along the side wall of the light shielding layer T to the side where the light shielding layer T is away from the substrate 100. In this way, it can be ensured that the light-emitting areas of the first light-emitting layer EL1, the second light-emitting layer EL2, and the third light-emitting layer EL3 are larger than the first opening K1, and the light-emitting areas of the first light-emitting layer EL1, the second light-emitting layer EL2, and the third light-emitting layer EL3 can all cover the first opening K1, and the light emitted by the light-emitting panel 1000 is the light after the first light-emitting layer EL1, the second light-emitting layer EL2, and the third light-emitting layer EL3 are stacked, so that the light-emitting panel 1000 can realize the function of adjustable color temperature and improve the light-emitting quality of the light-emitting panel 1000.

[0150] Exemplarily, the light shielding layer T is embedded between the edges of the first connection electrode L1 and the first electrode 201, between the edges of the second connection electrode L2 and the first electrode 201, and between the edges of the third connection electrode and the first electrode 201; or, the light shielding layer T is disposed between the substrate 100 and the first electrode 201, and in the orthographic projection onto the substrate 100, the light shielding layer T overlaps with the edges of the first connection electrode L1 and the first electrode 201, overlaps with the edges of the second connection electrode L2 and the first electrode 201, and overlaps with the edges of the third connection electrode L3 and the first electrode 201. This embodiment is described by taking the light shielding layer T disposed between the substrate 100 and the first electrode 201 as an example.

[0151] Combined with reference Fig.24 , Fig.25 and Fig.26 In the orthographic projection onto the substrate 100, the boundaries of the third light-emitting layer EL3 are located between the first boundary T1 and the second boundary T2 of the light-shielding layer T. In this way, the light-emitting area of ​​the third light-emitting layer EL3 can be ensured to be larger than the first opening K1, and the light-emitting areas of the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 can all cover the first opening K1. The light emitted by the light-emitting panel 1000 is the light after the first light-emitting layer EL1, the second light-emitting layer EL2 and the third light-emitting layer EL3 are stacked, so that the light-emitting panel 1000 can realize the function of adjustable color temperature while improving the light-emitting quality of the light-emitting panel 1000.

[0152] The embodiment of the present disclosure also provides a light emitting device M, referring to Fig. 27 The light-emitting device M includes: a light-emitting panel 1000 and a controller Q as described in any of the above embodiments, and the controller Q is connected to the first electrode 201 of the light-emitting panel 1000 and a plurality of connecting electrodes L, so as to realize signal transmission between the controller Q and the first electrode 201, the intermediate electrode and the counter electrode.

[0153] For example, when the light-emitting panel 1000 includes a first light-emitting layer and a second light-emitting layer, and the plurality of connecting electrodes L include a first connecting electrode L1 and a second connecting electrode L2, signal transmission can be achieved between the controller Q and the first electrode 201, between the controller Q and the first intermediate electrode, and between the controller Q and the counter electrode.

[0154] In the case where the light emitting panel 1000 further includes a third light emitting layer and a second intermediate electrode, and the plurality of connection electrodes L further includes a third connection portion L3, Fig.28 The controller Q is also connected to the third connection portion L3, thereby realizing signal transmission between the controller Q and the second intermediate electrode.

[0155] The light-emitting device M provided in the embodiment of the present invention can be applied to eye protection desk lamps, medical beauty lighting or other light-emitting devices used for lighting.

[0156] In some embodiments, the controller Q may include a flexible printed circuit (FPC), wherein the first electrode 201, the first connection electrode L1, the second connection electrode L2 and the third connection electrode L3 are all connected to the flexible printed circuit, and the flexible printed circuit inputs signals to the first electrode 201, the first connection electrode L1, the second connection electrode L2 and the third connection electrode L3 respectively to control the light-emitting panel 1000 to emit light.

[0157] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A light-emitting panel, characterized in that: include: substrate; A first electrode, disposed on one side of the substrate; a counter electrode, disposed on a side of the first electrode away from the substrate; At least two light-emitting layers are disposed between the first electrode and the counter electrode; An intermediate electrode is disposed between two adjacent light-emitting layers; A plurality of connecting electrodes are arranged around the first electrode, and the plurality of connecting electrodes and the connecting electrodes and the first electrode are spaced apart from each other; The counter electrode and the intermediate electrode are respectively electrically connected to at least one of the connecting electrodes.

2. The light emitting panel according to claim 1, characterized in that: The at least two light-emitting layers include: a first light-emitting layer and a second light-emitting layer, the plurality of connecting electrodes include a first connecting electrode and a second connecting electrode, and the intermediate electrode includes a first intermediate electrode; The first electrode, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer and the counter electrode are stacked in sequence in a direction away from the substrate, and the first electrode, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer and the counter electrode overlap; the first intermediate electrode is electrically connected to the first connecting electrode, and the counter electrode is electrically connected to the second connecting electrode.

3. The light emitting panel according to claim 2, characterized in that: The light emitting panel has a first cross section, the first cross section is perpendicular to the substrate, parallel to a direction in which the first intermediate electrode is electrically connected to the first connecting electrode, and passes through the first connecting electrode; In the first cross section, the boundary of the second light-emitting layer is located between the boundary of the first intermediate electrode and the boundary of the counter electrode, and the boundary of the first intermediate electrode is farther away from the center line of the first electrode than the boundary of the counter electrode; the center line passes through the center of the first electrode and is perpendicular to the substrate.

4. The light emitting panel according to claim 2 or 3, characterized in that: The light emitting panel has a second cross section, the second cross section is perpendicular to the substrate, parallel to the direction in which the counter electrode is electrically connected to the second connecting electrode, and passes through the second connecting electrode; In the second cross section, the boundary of the second light-emitting layer is located between the boundary of the first intermediate electrode and the boundary of the counter electrode, and the boundary of the first intermediate electrode is closer to the center line of the first electrode than the boundary of the counter electrode; the center line passes through the center of the first electrode and is perpendicular to the substrate.

5. The light emitting panel according to any one of claims 2 to 4, characterized in that: Also includes: A light shielding layer, disposed between the substrate and the first light emitting layer, the light shielding layer defining a first opening; The first electrode, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer and the counter electrode overlap at least in the first opening; In an orthographic projection onto the substrate, the light shielding layer covers a gap region between the first connecting electrode and the first electrode, and a gap region between the second connecting electrode and the first electrode.

6. The light emitting panel according to claim 5, characterized in that: The light shielding layer is disposed on a side of the first electrode away from the substrate, and the first opening is located above the first electrode; The light shielding layer covers the edge where the first connecting electrode and the first electrode are close to each other, and the edge where the second connecting electrode and the first electrode are close to each other.

7. The light emitting panel according to claim 6, characterized in that: The first light-emitting layer and the second light-emitting layer both extend along the sidewall of the light-shielding layer to a side of the light-shielding layer away from the substrate.

8. The light emitting panel according to claim 6 or 7, characterized in that: The first intermediate electrode comprises a first edge electrically connected to the first connecting electrode, and a second edge not electrically connected to the first connecting electrode; The first edge crosses the light shielding layer and is electrically connected to the first connection electrode; The second edge is located at a side of the light shielding layer away from the substrate.

9. The light emitting panel according to any one of claims 6 to 8, characterized in that: The counter electrode comprises a third edge electrically connected to the second connection electrode, and a fourth edge not electrically connected to the second connection electrode; The third edge crosses the light shielding layer and is electrically connected to the second connection electrode; The fourth edge is located at a side of the light shielding layer away from the substrate.

10. The light emitting panel according to claim 5, characterized in that: The light shielding layer is embedded between the edges of the first connecting electrode and the first electrode that are close to each other, and between the edges of the second connecting electrode and the first electrode that are close to each other; or, The shading layer is arranged between the substrate and the first electrode. In the orthographic projection onto the substrate, the shading layer overlaps with the edges of the first connecting electrode and the first electrode close to each other, and overlaps with the edges of the second connecting electrode and the first electrode close to each other.

11. The light emitting panel according to claim 10, characterized in that: The light shielding layer comprises a first boundary close to the first opening and a second boundary far from the first opening; In an orthographic projection onto the substrate, a boundary of the first light-emitting layer and a boundary of the second light-emitting layer are both located between a first boundary and a second boundary of the light-shielding layer.

12. The light emitting panel according to claim 10 or 11, characterized in that: The first intermediate electrode comprises a first edge electrically connected to the first connecting electrode, and a second edge not electrically connected to the first connecting electrode; The light-shielding layer includes a first boundary close to the first opening and a second boundary away from the first opening; in the orthographic projection onto the substrate, the first edge covers the light-shielding layer and is electrically connected to the first connecting electrode, and the boundary of the second edge is located between the first boundary and the second boundary of the light-shielding layer.

13. The light emitting panel according to any one of claims 10 to 12, characterized in that: The counter electrode comprises a third edge electrically connected to the second connection electrode, and a fourth edge not electrically connected to the second connection electrode; The light-shielding layer includes a first boundary close to the first opening and a second boundary away from the first opening; in the orthographic projection onto the substrate, the third edge covers the light-shielding layer and is electrically connected to the second connecting electrode, and the boundary of the fourth edge is located between the first boundary and the second boundary of the light-shielding layer.

14. The light emitting panel according to claim 9 or 13, characterized in that: Along the electrical connection direction between the counter electrode and the second connection electrode, a cross-sectional shape of the third edge of the counter electrode includes a step shape.

15. The light emitting panel according to any one of claims 5 to 14, characterized in that: The first electrode and the first intermediate electrode can transmit light, and the counter electrode can reflect light.

16. The light emitting panel according to claim 1, characterized in that: At least two of the at least two light-emitting layers emit light of different colors.

17. The light emitting panel according to any one of claims 2 to 16, characterized in that: The first electrode comprises an electrode body and an extension sub-part connected to the electrode body, wherein the extension sub-part is arranged on at least one side of the electrode body; The electrode body, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer and the counter electrode overlap; The first connection electrode and the second connection electrode are arranged around the electrode body, and the first connection electrode, the second connection electrode and the extension sub-portion are arranged at intervals from each other.

18. The light emitting panel according to claim 17, characterized in that: The extension sub-portions are arranged on two opposite sides of the electrode portion body; and / or, Along the first direction, the first connecting electrodes are arranged on two opposite sides of the electrode body; and / or, Along the second direction, the second connecting electrodes are arranged on two opposite sides of the electrode body; the first direction and the second direction intersect.

19. The light emitting panel according to claim 18, characterized in that: The light emitting panel comprises two groups of first connecting electrodes, each group of first connecting electrodes comprises two first connecting electrodes respectively arranged on two opposite sides of the electrode body along the first direction; On the same side of the electrode portion body, the extending sub-portion is located between two of the first connecting electrodes.

20. The light emitting panel according to any one of claims 1 to 19, characterized in that: The plurality of connection electrodes further include a third connection electrode, the third connection electrode and the first electrode, the first connection electrode and the second connection electrode are arranged spaced apart from each other; the third connection electrode is arranged around the first electrode; The light emitting panel further comprises: a third light-emitting layer and a second intermediate electrode disposed on a side of the second light-emitting layer away from the substrate, the third light-emitting layer being farther from the substrate than the second intermediate electrode, and the first electrode, the first light-emitting layer, the first intermediate electrode, the second light-emitting layer, the second intermediate electrode, the third light-emitting layer and the counter electrode overlapping; The second intermediate electrode is electrically connected to the third connecting electrode.

21. The light emitting panel according to claim 20, characterized in that: The light emitting panel has a third cross section, the third cross section is perpendicular to the substrate, parallel to the direction in which the second intermediate electrode is electrically connected to the third connecting electrode, and passes through the third connecting electrode; In the third cross section, the boundary of the third light-emitting layer is located between the boundary of the second intermediate electrode and the boundary of the counter electrode, and the boundary of the second intermediate electrode is farther away from the center line of the first electrode than the boundary of the counter electrode; the center line passes through the center of the first electrode and is perpendicular to the substrate.

22. The light emitting panel according to any one of claims 1 to 21, characterized in that: The first electrode, the middle electrode, and the counter electrode are configured to apply voltages, and the voltages of at least two of the first electrode, the middle electrode, and the counter electrode are not equal in magnitude.

23. A light emitting device, characterized in that: include: The light emitting panel according to any one of claims 1 to 22; The controller is electrically connected to the first electrode of the light emitting panel and a plurality of connecting electrodes.

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