Light-emitting panel and light-emitting apparatus

Abstract

The embodiments of the present disclosure relate to the technical field of lighting. Provided are a light-emitting panel and a light-emitting apparatus, which are used for achieving the function of the color temperature of the light-emitting apparatus being adjustable. 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 connection electrodes, wherein the first electrode is disposed on one side of the substrate; the counter electrode is disposed at the side of the first electrode away from the substrate; the at least two light-emitting layers are disposed between the first electrode and the counter electrode; the intermediate electrode is disposed between two adjacent light-emitting layers; the plurality of connection electrodes are disposed around the first electrode, the plurality of connection electrodes are spaced apart from each other, and the connection electrodes and the first electrode are spaced apart from each other; and the counter electrode and the intermediate electrode are each electrically connected to at least one connection electrode. The light-emitting panel is used for emitting light.

Description

Light-emitting panel and light-emitting device

[0001] This application claims priority to Chinese patent application No. 202411530037.5, filed on October 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of lighting technology, and in particular to a light-emitting panel and a light-emitting device. Background Technology

[0003] In recent years, Organic Light-Emitting Devices (OLEDs) have become a research hotspot in fields such as full-color displays, backlights, and lighting due to their superior performance, including soft light emission, near-natural light, wide viewing angle, fast response speed, thinness, high brightness, high efficiency, and active emission. However, most OLED lighting products on the market only have a constant color temperature, which cannot meet the higher demands of lighting products. Summary of the Invention

[0004] The purpose of the embodiments disclosed herein is to provide a light-emitting panel and a light-emitting device for realizing the function of adjustable color temperature of the light-emitting device.

[0005] To achieve the above objectives, the embodiments of this disclosure provide the following technical solutions:

[0006] On one hand, a light-emitting panel is provided. The light-emitting panel includes: 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 disposed on one side of the substrate; the counter electrode is disposed on the 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; the intermediate electrode is disposed between two adjacent light-emitting layers; a plurality of connecting electrodes are disposed around the first electrode, and the plurality of connecting electrodes are spaced apart from each other and from the first electrode; the counter electrode and the intermediate electrode are each electrically connected to at least one connecting electrode.

[0007] In the aforementioned light-emitting panel, since the panel includes at least two light-emitting layers, an intermediate electrode, and multiple connecting electrodes, the at least two light-emitting layers are disposed between a first electrode and a counter electrode, the intermediate electrode is disposed between two adjacent light-emitting layers, and the counter electrode and the intermediate electrode are each electrically connected to at least one connecting electrode. For example, the 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, and the first intermediate electrode and the counter electrode can provide the voltage required for the second light-emitting layer to emit light. The first and second light-emitting layers can emit light separately or simultaneously. When the first and second light-emitting layers emit light separately, and the colors of the light emitted by the first and second light-emitting layers are different, the same light-emitting panel can emit light of the color corresponding to either the first or second light-emitting layer. When the first and second light-emitting layers emit light simultaneously, and the colors of the light emitted by the first and second light-emitting layers 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 emitting color and brightness of the first and second light-emitting layers can be adjusted, enabling the light-emitting panel to achieve an adjustable color temperature function.

[0008] In some embodiments, at least two light-emitting layers include a first light-emitting layer and a second light-emitting layer, a plurality of connecting electrodes include a first connecting electrode and a second connecting electrode, and an 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 sequentially stacked along 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 and the first connecting electrode are connected, 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 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 that is perpendicular to the substrate, parallel to the direction in which the counter electrode and the second connecting electrode are electrically connected, 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, the light-shielding layer is further comprising: 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 overlapping at least within the first opening; and in a projected onto the substrate, the light-shielding layer covers the gap region between the first connecting electrode and the first electrode, and the gap region between the second connecting electrode and the first electrode.

[0012] In some embodiments, the light-shielding layer is disposed on the 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 edges of the first connecting electrode and the first electrode that are close to each other, as well as the edges of the second connecting electrode and the first electrode that 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 the 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 crosses the light-shielding layer and is electrically connected to the first connecting electrode; the second edge is located on the 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 crosses the light-shielding layer and is electrically connected to the second connecting electrode; the fourth edge is located on the side of the light-shielding layer away from the substrate.

[0016] In some embodiments, 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 light-shielding layer is disposed between the substrate and the first electrode, and in a positive projection onto the substrate, the light-shielding layer overlaps with the edges of the first connecting electrode and the first electrode that are close to each other, and overlaps with the edges of the second connecting electrode and the first electrode that are close to each other.

[0017] In some embodiments, the light-shielding layer includes a first boundary near the first opening and a second boundary away from the first opening; in a positive 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 near the first opening and a second boundary away from the first opening; in 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 near the first opening and a second boundary away from the first opening; in 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, the cross-sectional shape of the third edge of the counter electrode includes a stepped shape.

[0021] In some embodiments, the first electrode and the first intermediate electrode are light-transmitting, and the counter electrode is light-reflecting.

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

[0023] In some embodiments, the first electrode includes an electrode body and an extension sub-part connected to the electrode body, the extension sub-part being disposed 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 disposed 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-parts are disposed on opposite sides of the electrode body; and / or, along a first direction, the first connecting electrode is disposed on opposite sides of the electrode body; and / or, along a second direction, the second connecting electrode is disposed on opposite sides of the electrode body; the first direction and the second direction intersect.

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

[0026] In some embodiments, the plurality of connecting electrodes further includes a third connecting electrode, which is spaced apart from the first electrode, the first connecting electrode, and the second connecting electrode; the third connecting electrode is disposed around the first electrode; the light-emitting panel further includes: a third light-emitting layer and a second intermediate electrode disposed on the 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.

[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 and the third connecting electrode are electrically connected, 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 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 intermediate electrode, and the counter electrode are configured to apply voltages, and the voltage magnitudes of at least two of the first electrode, the intermediate electrode, and the counter electrode are not equal.

[0029] On the other hand, a light-emitting device is provided. The light-emitting device includes: a light-emitting panel and a controller as described in any of the above embodiments, wherein the controller is electrically connected to a first electrode of the light-emitting panel and a plurality of connecting electrodes.

[0030] The above-described light-emitting device has the same structure and beneficial technical effects as the light-emitting panel provided in some of the above embodiments, and will not be described again here. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

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

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

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

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

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

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

[0038] Figure 7 is a structural diagram of the first electrode and multiple connecting electrodes in the light-emitting panel of Figure 6;

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

[0040] Figure 9 is a cross-sectional view of the light-emitting panel in Figure 6 along section line BB;

[0041] Figure 10 is a cross-sectional view of the light-emitting panel in Figure 6 along section line DD;

[0042] Figure 11 is a diagram of the stacked structure of the first electrode, the light-shielding layer and the first intermediate electrode in the light-emitting panel of Figure 6.

[0043] Figure 12 is a diagram of the stacked structure of the first electrode, the light-shielding layer and the counter electrode in the light-emitting panel of Figure 6.

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

[0045] Figure 14 is a cross-sectional view of the light-emitting panel in Figure 13 along section line AA;

[0046] Figure 15 is another cross-sectional view of the light-emitting panel in Figure 13 along section line AA;

[0047] Figure 16 is a cross-sectional view of the light-emitting panel in Figure 13 along section line BB;

[0048] Figure 17 is a cross-sectional view of the light-emitting panel in Figure 13 along section line CC;

[0049] Figure 18 is a diagram of the stacked structure of the light-shielding layer, the first electrode, and the first intermediate electrode in the light-emitting panel of Figure 15.

[0050] Figure 19 is a diagram of the stacked structure of the light-shielding layer, the first electrode, and the counter electrode in the light-emitting panel of Figure 15.

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

[0052] Figure 21 is a cross-sectional view of the light-emitting panel in Figure 20 along section line DD;

[0053] Figure 22 is a cross-sectional view of the light-emitting panel in Figure 20 along section line EE;

[0054] Figure 23 is a cross-sectional view of the light-emitting panel in Figure 20 along section line FF;

[0055] Figure 24 is a cross-sectional view of the light-emitting panel in Figure 20 along section line DD;

[0056] Figure 25 is a cross-sectional view of the light-emitting panel in Figure 20 along section line EE;

[0057] Figure 26 is a cross-sectional view of the light-emitting panel in Figure 20 along section line FF;

[0058] Figure 27 is a structural diagram of a light-emitting device according to some embodiments;

[0059] Figure 28 is a structural diagram of a light-emitting device according to some other embodiments. Detailed Implementation

[0060] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0061] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

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

[0063] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. The embodiments disclosed herein are not necessarily limited to the content 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", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations 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 “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0067] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the 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 described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error 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, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0069] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0070] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0071] The embodiments of this disclosure provide a light-emitting panel 1000. Referring to Figures 1, 2, 3 and 4, the light-emitting panel 1000 includes a substrate 100, a first electrode 201, a light-emitting layer EL and a counter electrode 202 stacked together.

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

[0073] In some embodiments, continuing to refer to FIG3 or FIG4, a buffer layer 101 may be provided between the substrate 100 and the first electrode 201 to reduce the stress generated between the first electrode 201 and the substrate 100.

[0074] Referring to Figure 2, the light-emitting panel 1000 further includes a connecting electrode L, and a first electrode 201 and the connecting electrode L are disposed at intervals. The first electrode 201 includes an electrode body 21 and an extension sub-part 22 connected to the electrode body 21. The extension sub-part 22 can be disposed on 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 disposed around the electrode body 21, and the connecting electrode L and the extension sub-part 22 are disposed at intervals. 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. 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 causing the light-emitting layer EL to emit light.

[0075] The light-emitting layer (EL) includes an organic light-emitting layer, and may further include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, an electron transport layer, and an electron injection layer. The light emitted by the EL can be any color, such as red, blue, green, or white. The color of the light emitted by the EL is determined based on the specific lighting application; for example, when the light-emitting panel 1000 is used in a vehicle taillight, the EL may emit red light.

[0076] In the aforementioned 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 through the hole transport layer into the organic light-emitting layer, and electrons are injected from the counter electrode 202 through the electron transport layer into the organic light-emitting layer. Thus, holes from the first electrode 201 and electrons from the counter electrode 202 recombine in the organic light-emitting layer, and the energy generated at this time excites the light-emitting layer EL to emit light. 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 is light-transmitting, and the counter electrode 202 is light-reflecting, so that the light emitted by the light-emitting layer EL passes through the substrate 100 and is emitted. In other embodiments, the first electrode 201 is light-reflecting, and the counter electrode 202 is light-transmitting, so that the light emitted by the light-emitting layer EL is emitted in a direction away from the substrate 100.

[0078] Referring to Figure 5, the light-emitting panel 1000 further includes an encapsulation structure 102 located on the side of the counter electrode 202 away from the substrate 100 and covering the sidewall of the counter electrode 202 and part of the sidewall of the light-emitting layer EL. The encapsulation structure 102 is used to encapsulate the counter electrode 202 and the light-emitting layer EL, which can prevent leakage of the counter electrode 202 and also protect the counter electrode 202 and the light-emitting layer EL from corrosion by external water and oxygen.

[0079] For example, the material of the packaging structure 102 may include silicon nitride (SiN). x ), silicon dioxide (SiO) x ), silicon oxynitride (SiO) x N y One or more combinations of )

[0080] Referring again to Figure 5, the light-emitting panel 1000 further includes an encapsulating adhesive layer 103 and a cover plate 104. The encapsulating adhesive layer 103 is located between the encapsulation structure 102 and the cover plate 104, and the encapsulating adhesive layer 103 also covers the sidewall of the encapsulation structure 102. The cover plate 104 is bonded to the side of the encapsulating adhesive layer 103 away from the substrate 100 by the encapsulating adhesive layer 103. The encapsulating adhesive layer 103 and the cover plate 104 encapsulate the first electrode 201, the light-emitting layer EL, and the counter electrode 202.

[0081] The cover plate 104 can be made of tempered glass, reinforced glass, etc.

[0082] The connecting electrode L and the extension sub-part 22 in the light-emitting panel 1000 extend to the outside of the encapsulation structure 102 and the encapsulation adhesive layer 103 and are connected to the external circuit. In this way, the external circuit can input the signal required for the light-emitting layer EL to emit light through the connecting electrode L and the extension sub-part 22.

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

[0084] To solve the above-mentioned technical problems, embodiments of this disclosure provide a light-emitting panel 1000, which, with reference to Figures 6 and 7, includes: a substrate 100, a first electrode 201, a counter electrode 202, at least two light-emitting layers EL, an intermediate electrode 300, and a plurality of connecting electrodes L.

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

[0086] The light-emitting panel 1000 provided in this embodiment includes at least two light-emitting layers EL, an intermediate electrode 300, and multiple connecting electrodes L. The at least two light-emitting layers EL are disposed between a first electrode 201 and a counter electrode 202, and the intermediate electrode 300 is disposed between two adjacent light-emitting layers EL. The counter electrode 202 and the intermediate electrode 300 are electrically connected to at least one connecting electrode L. For example, referring to FIG6, the at least two light-emitting layers EL include a first light-emitting layer EL1 and a second light-emitting layer EL2. 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. 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 either 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, 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 by adjusting the voltage applied to the first light-emitting layer EL1 and / or the voltage applied to the second light-emitting layer EL2, 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 intermediate electrode 300 are light-transmitting, while the counter electrode 202 is light-reflecting, and light emitted from at least two light-emitting layers EL is emitted through the substrate 100. In other embodiments, the first electrode 201 is light-reflecting, while the intermediate electrode 300 and the counter electrode 202 are light-transmitting, and light emitted from at least two light-emitting layers EL is emitted in a direction away from the substrate 100.

[0088] In some embodiments, continuing to refer to FIG6, at least two light-emitting layers EL include: a first light-emitting layer EL1 and a second light-emitting layer EL2, a plurality of connecting electrodes L include a first connecting electrode L1 and a first connecting electrode L2, and an 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 sequentially stacked along 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 connecting electrode L1, and the counter electrode is electrically connected to the second connecting electrode L2.

[0089] In the aforementioned light-emitting panel 1000, the first electrode 201, the intermediate electrode 300, and the counter electrode 202 are configured to apply voltages, and at least two of the first electrode 201, the intermediate electrode 300, and the counter electrode 202 have different voltage magnitudes.

[0090] For example, 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, the first light-emitting layer EL1, and the first intermediate electrode 301 can constitute a first OLED light-emitting device, and the first intermediate electrode 301, the second light-emitting layer EL2, and the counter electrode 202 can constitute a second OLED light-emitting device. That is, the first intermediate electrode 301 can be either an electrode in the first OLED light-emitting device or an electrode in the second OLED light-emitting device. For example, if a relatively high potential is applied to the first electrode 201 and a relatively low potential is applied to the first intermediate electrode 301, then the first electrode 201 can serve as the anode of the first OLED light-emitting device, and the first intermediate electrode 301 can serve as the cathode of the first OLED light-emitting device. Furthermore, if a relatively low potential is applied to the counter electrode 202 compared to the first intermediate electrode 301, then the first intermediate electrode 301 can serve as the anode of the second OLED light-emitting device, and the counter electrode 202 can serve as the 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 further include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer disposed 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 disposed between the first intermediate electrode 301 and the organic light-emitting layer. The specific configuration is determined according to actual needs, and this embodiment does not impose any restrictions on it.

[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 disposed 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 disposed between the counter electrode 202 and the organic light-emitting layer. The specific configuration is determined according to actual needs, and this embodiment does not impose any restrictions on it.

[0093] In some embodiments, at least two light-emitting layers EL in the light-emitting panel 1000 emit light of different colors. Thus, 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. This allows for the creation of different atmospheric effects by adjusting the intensity and proportion of different colors of light, thereby meeting different decorative and lighting needs.

[0094] For example, when the light-emitting panel 1000 includes at least two light-emitting layers EL: a first light-emitting layer EL1 and a second light-emitting layer EL2, the light emitted by the first light-emitting layer EL1 and the second light-emitting layer EL2 is of different colors.

[0095] For example, when the light emitted by the first emitting layer EL1 is red, the light emitted by the second emitting layer EL2 can be any color among blue, green, and white. When the light emitted by the first emitting layer EL1 is blue, the light emitted by the second emitting layer EL2 can be any color among red, green, and white. When the light emitted by the first emitting layer EL1 is green, the light emitted by the second emitting layer EL2 can be any color among red, blue, and white. When the light emitted by the first emitting layer EL1 is white, the light emitted by the second emitting layer EL2 can be any color among red, blue, and green. Thus, the light emitted by the light-emitting panel 1000 is the superposition of the two different colors emitted by the first emitting layer EL1 and the second emitting layer EL2. Furthermore, by adjusting the voltage applied to the first emitting layer EL1 and / or the voltage applied to the second emitting layer EL2, the ratio of the emitted color and brightness of the first and second emitting layers EL1 can be adjusted, enabling the light-emitting panel to achieve adjustable color temperature to meet different decorative and lighting needs. The colors of the light emitted by the first emitting layer EL1 and the second emitting layer EL2 can be set according to the needs of the actual application scenario.

[0096] In some embodiments, continuing to refer to FIG7, the first electrode 201 includes an electrode body 21 and an extension sub-part 22 connected to the electrode body 21, the extension sub-part 22 being disposed on at least one side of the electrode body 21; referring to FIGS. 6 and 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; referring to FIG7, the first connecting electrode L1 and the second connecting electrode L2 are disposed around the electrode body 21, and the first connecting electrode L1, the second connecting electrode L2, and the extension sub-part 22 are spaced apart from each other. The spaced-apart arrangement of the first connecting electrode L1, the second connecting electrode L2, and the extension sub-part 22 can prevent short circuits between the first electrode 201, the first intermediate electrode 301, and the counter electrode 202.

[0097] For example, referring to FIG7, the extension sub-parts 22 are provided on opposite sides of the electrode body 21. In this way, the voltage signal of the electrode body 21 is input from opposite sides of the electrode body 21, which can ensure that the voltage at all points of the electrode body 21 is basically consistent, thereby ensuring the uniformity of the light emission brightness at all points of the light-emitting panel 1000.

[0098] In some embodiments, referring to FIG7, along the first direction X1, the first connecting electrode L1 is disposed on opposite sides of the electrode body 21; and / or, along the second direction X2, the second connecting electrode L2 is disposed on opposite sides of the electrode body 21; the first direction X1 and the second direction X2 intersect. Thus, the voltage signal of the first intermediate electrode 301 is input from opposite sides of the first intermediate electrode 301, ensuring that the voltage at each point of the first intermediate electrode 301 is substantially consistent; similarly, the voltage signal of the counter electrode 202 is input from opposite sides of the counter electrode 202, ensuring that the voltage at each point of the counter electrode 202 is substantially consistent. This ensures the uniformity of the luminous brightness at each point of the light-emitting panel 1000.

[0099] For example, referring to FIG7, the light-emitting panel 1000 includes two sets of first connecting electrodes L1. Each set of first connecting electrodes L1 includes two first connecting electrodes L1 respectively disposed on opposite sides of the electrode body 21 along a first direction X1. On the same side of the electrode body 21, an extension sub-part 22 is located between the two first connecting electrodes L1. In this way, the first intermediate electrode 301 can be electrically connected to the first connecting electrodes L1 located at four different positions, further ensuring that the voltage at each point of the first intermediate electrode 301 is basically consistent, thereby improving the uniformity of the light emission brightness at each point of the light-emitting panel 1000.

[0100] Referring to Figures 6 and 8, the light-emitting panel 1000 has a first cross-section, which is a cross-section along section line AA. The first cross-section is perpendicular to the substrate 100, parallel to the direction of electrical connection between the first intermediate electrode 301 and the first connecting electrode L1, and passes through the first connecting 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 and the counter electrode 202 can be isolated, avoiding a short circuit between the first intermediate electrode 301 and the counter electrode 202.

[0101] Referring to Figures 6 and 9, the light-emitting panel 1000 has a second cross-section, which is a cross-section along section line BB. The second cross-section is perpendicular to the substrate 100, parallel to the direction of electrical connection between the counter electrode 202 and the second connecting electrode L2, and passes through the second connecting 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 encloses the first intermediate electrode 301, isolating the first intermediate electrode 301 from the counter electrode 202 and preventing a short circuit between the first intermediate electrode 301 and the counter electrode 202.

[0102] Referring to Figures 6 and 10, the light-emitting panel 1000 has a fourth cross-section, which is a cross-section along the section line DD. The fourth cross-section is perpendicular to the substrate 100, parallel to the direction of connection between the electrode body 21 and 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. 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, short circuits between the first intermediate electrode 301 and the counter electrode 202, as well as between the first intermediate electrode 301 and the first electrode 201, can be avoided.

[0103] 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 intermediate electrode 301 are capable of transmitting light, while the counter electrode 202 is capable of reflecting light. 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, while the first intermediate electrode 301 and the counter electrode 202 are capable of transmitting light. 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 manufacturing process of the light-emitting panel 1000, especially when the light-emitting panel 1000 includes at least two light-emitting layers EL, the edge differences in the light-emitting area of ​​at least two light-emitting layers EL are caused by the influence of equipment precision and alignment deviation, which leads to light leakage at the edge of the light-emitting panel 1000 and poor overall display effect of the light-emitting panel 1000.

[0105] To address the aforementioned technical problems, in some embodiments, referring to FIG6, the light-emitting panel 1000 further includes: a light-shielding layer T disposed between the substrate 100 and the first light-emitting layer EL1, the light-shielding layer T defining 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 and the counter electrode 202 overlapping at least within the first opening K1; in a positive projection onto the substrate 100, the light-shielding layer T covers the gap region between the first connecting electrode L1 and the first electrode 201, and the gap region between the second connecting electrode L2 and the first electrode 201.

[0106] The light-shielding layer T can correct the light-emitting area of ​​the first light-emitting layer EL1 and the second light-emitting layer EL2, that is, both the first light-emitting layer EL1 and the second light-emitting layer EL2 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] For example, referring to Figures 8, 9 and 10, the light-shielding layer T is disposed 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 edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, as well as the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other.

[0108] Furthermore, the light-shielding layer T covers the edges where the first connecting electrode L1 and the first electrode 201 approach each other, as well as the edges where the second connecting electrode L2 and the first electrode 201 approach each other. In other words, the light-shielding layer T separates the first connecting electrode L1 and the first electrode 201, and the second connecting electrode L2 and the first electrode 201. This can prevent a short circuit between the first intermediate electrode 301 and the first electrode 201, and also prevent 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., and this embodiment does not limit it.

[0110] Referring again to Figures 8, 9, or 10, both the first light-emitting layer EL1 and the second light-emitting layer EL2 extend along the sidewall of the light-shielding layer T to the side of the light-shielding layer T away from the substrate 100. This ensures that the light-emitting areas of the first light-emitting layer EL1 and the second light-emitting layer EL2 are larger than the first opening K1, and that the light-emitting areas of both 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 resulting from the stacking of the first light-emitting layer EL1 and the second light-emitting layer EL2, enabling the light-emitting panel 1000 to achieve adjustable color temperature while improving the light emission 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 can 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 can 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 can 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 both cover the first opening K1, the light emitted by the light-emitting panel 1000 is 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] Referring to Figure 11, the first intermediate electrode 301 includes a first edge B1 electrically connected to the first connecting electrode L1 and a second edge B2 not electrically connected to the first connecting electrode L1; the first edge B1 crosses the light-shielding layer T and is electrically connected to the first connecting electrode L1; the second edge B2 is located on the side of the light-shielding layer T away from the substrate 100. This ensures that the first intermediate electrode 301 is electrically connected to the first connecting electrode L1 while preventing short circuits between the first intermediate electrode 301 and the first electrode 201, or between the first intermediate electrode 301 and the second connecting electrode L2.

[0113] It should be noted that, in order to clearly show the positional relationship between the various film layers in the figure, Figure 11 only shows the positional relationship between the first electrode 201, the light-shielding layer T and the first intermediate electrode 301.

[0114] Referring to Figure 12, the counter electrode 202 includes a third edge B3 electrically connected to the second connecting electrode L2 and a fourth edge B4 not electrically connected to the second connecting electrode L2; the third edge B3 crosses the light-shielding layer T and is electrically connected to the second connecting electrode L2; the fourth edge B4 is located on the side of the light-shielding layer T away from the substrate 100. This ensures that the counter electrode 202 is electrically connected to the second connecting electrode L2 while preventing short circuits between the counter electrode 202 and the first electrode 201, or between the counter electrode 202 and the first connecting electrode L1.

[0115] Referring again to Figure 9, when the light-shielding layer T is disposed between the substrate 100 and the first light-emitting layer EL1, the cross-sectional shape of the third edge B3 of the counter electrode 202 includes a stepped shape along the electrical connection direction between the counter electrode 202 and the second connecting electrode L2. This can reduce the discontinuity in the formation of the counter electrode 202, reduce the risk of breakage of the counter electrode 202, and 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, only the positional relationship between the first electrode 201, the light-shielding layer T and the counter electrode 202 is shown in Figure 12.

[0117] Referring to Figures 8, 9, and 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 an encapsulating adhesive layer 103. This facilitates the connection of the first electrode 201, the first intermediate electrode 301, and the counter electrode 202 with the controller in the light-emitting device using the light-emitting panel 1000.

[0118] In the light-emitting panel 1000 shown in Figures 8, 9 or 10, 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, referring to FIG13, the light-shielding 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 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 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, referring to FIG14, the light-shielding 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. In this way, the light-shielding part T can also prevent short circuits from occurring between the first intermediate electrode 301 and the first electrode 201, or between the first intermediate electrode 301 and the second connecting electrode L2.

[0121] For example, referring to FIG15, a light-shielding layer T is disposed 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 a projection onto the substrate 100, the light-shielding layer T may overlap with the edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, and with the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other. In this case, the first light-emitting layer EL1 is also located between the first connecting electrode L1 and the first electrode 201, and between the second connecting electrode L2 and the first electrode 201. In this way, the first light-emitting layer EL1 can also prevent short circuits between the first intermediate electrode 301 and the first electrode 201, or between the first intermediate electrode 301 and the second connecting electrode L2.

[0122] In this embodiment, the structure of the light-emitting panel 1000 is illustrated with the light-shielding layer T located between the substrate 100 and the buffer layer 101.

[0123] Furthermore, the light-shielding 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 light-shielding layer T is disposed between the substrate 100 and the first electrode 201, that is, between the substrate 100 and the buffer layer 101. Compared with the light-shielding 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 light-shielding layer T being embedded between the edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, so as to... And between the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other; or, when the light-shielding layer T is disposed 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, thus avoiding the risk of the first light-emitting layer EL1 and the second light-emitting layer EL2 becoming thinner at the climbing position due to the climbing of the first light-emitting layer EL1, the first intermediate electrode 301, the second light-emitting layer EL2 and the counter electrode 202 on the light-shielding layer T, which would lead to a short circuit between the first intermediate electrode 301 and the counter electrode 202.

[0124] Referring to Figure 14 or Figure 15, the light-shielding layer T includes a first boundary T1 near the first opening K1 and a second boundary T2 away from the first opening K1. In the orthographic projection onto the substrate 100, the boundaries of the first light-emitting layer EL1 and 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. This ensures that the light-emitting areas of the first light-emitting layer EL1 and the second light-emitting layer EL2 are larger than the first opening K1, and that the light-emitting areas of both 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 after the first light-emitting layer EL1 and the second light-emitting layer EL2 are stacked, enabling the light-emitting panel 1000 to achieve adjustable color temperature while improving the light emission quality of the light-emitting panel 1000.

[0125] Referring to Figures 15, 16, 17, and 18, the first intermediate electrode 301 includes a first edge B1 electrically connected to the first connecting electrode L1 and a second edge B2 not electrically connected to the first connecting electrode L1. In a projection onto the substrate 100, the first edge B1 covers a light-shielding layer T and is electrically connected to the first connecting electrode L1, while 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. This ensures that the first intermediate electrode 301 overlaps with the first connecting electrode L1 while preventing short circuits between the first intermediate electrode 301 and the first electrode 201, or between the first intermediate electrode 301 and the second connecting electrode L2.

[0126] It should be noted that, in order to clearly show the positional relationship between the various film layers in the figure, Figure 18 only shows the positional relationship between the light-shielding layer T, the first electrode 201 and the first intermediate electrode 301.

[0127] Referring to Figures 15, 16, 17, and 19, the counter electrode 202 includes a third edge B3 electrically connected to the second connecting electrode L2 and a fourth edge B4 not electrically connected to the second connecting 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 connecting electrode L2, while 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. This ensures that the counter electrode 202 is electrically connected to the second connecting electrode L2 while preventing short circuits between the counter electrode 202 and the first electrode 201, or between the counter electrode 202 and the first connecting electrode L1.

[0128] It should be noted that, in order to clearly show the positional relationship between the various film layers in the figure, Figure 19 only shows the positional relationship between the light-shielding layer T, the first electrode 201 and the counter electrode 202.

[0129] In some embodiments, the first electrode 201 and the first intermediate electrode 301 are light-transmitting, while the counter electrode 202 is light-reflecting. 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 towards the substrate 100. Since the material of the light-shielding layer T includes a light-shielding material, the light-shielding layer T can modify the light-emitting area of ​​the first light-emitting layer EL1 and the second light-emitting layer EL2, so that both the first light-emitting layer EL1 and the second light-emitting layer EL2 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 and the appearance of a halo at the edge of the light-emitting panel 1000 due to the difference in the light-emitting areas of the first light-emitting layer EL1 and the second light-emitting layer EL2, thereby improving the light emission quality of the light-emitting panel 1000.

[0130] In some embodiments, referring to FIG20, the plurality of connecting electrodes L further includes a third connecting electrode L3, which is disposed at intervals from the first electrode 201, the first connecting electrode L1 and the second connecting electrode L2; the third connecting electrode L3 is disposed around the first electrode 201.

[0131] For example, referring to FIG20, the light-emitting panel 1000 includes two sets of third connecting electrodes L3. Each set of third connecting electrodes L3 includes two third connecting electrodes L3 respectively disposed on opposite sides of the electrode body 21 along a first direction X1. On the same side of the electrode body 21, an extension sub-part 22 is located between the two third connecting electrodes L3. Each third connecting electrode L3 is located between the extension sub-part 22 and the first connecting electrode L1.

[0132] The third connecting electrode L3 can also be arranged in other ways, as long as it is arranged at intervals with the first electrode 201, the first connecting electrode L1 and the second connecting electrode L2 and is located around the electrode body 21.

[0133] Referring to FIG. 21, the light-emitting panel 1000 further includes a third connecting electrode L3 on the connecting electrode L of the light-emitting panel 1000. The third light-emitting layer EL3 is disposed on the side of the second light-emitting layer EL2 away from the substrate 100, and a second intermediate electrode 302. The third light-emitting layer EL3 is farther from the substrate 100 than the second intermediate electrode 302. 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 connecting electrode L3. The third connecting electrode L3 is spaced apart from the first electrode 201, the first connecting electrode L1, and the second connecting electrode L2 to prevent 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 connecting electrode L1, the second intermediate electrode 302 is electrically connected to the third connecting electrode L3, and the counter electrode 202 is electrically connected to the second connecting 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, and 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. 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 simultaneously, 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 ratio of the light emission color and the light emission brightness of the first light-emitting layer EL1, the second light-emitting layer EL2, and the third light-emitting layer EL3 can be adjusted 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, so that the light-emitting panel 1000 can achieve 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 are light-transmitting, while the counter electrode 202 is light-reflecting. 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, while the first intermediate electrode 301, the second intermediate electrode 302, and the counter electrode 202 are light-transmitting. 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 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, 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 either the first or second OLED light-emitting device, and the second intermediate electrode 302 can be an electrode in either the second or third OLED light-emitting device. For example, by applying a relatively high potential to the first electrode 201 and a relatively low potential to the first intermediate electrode 301, the first electrode 201 can serve as the anode of the first OLED light-emitting device, and the first intermediate electrode 301 can serve as the cathode of the first OLED light-emitting device. Based on this, a lower potential than that of the first intermediate electrode 301 is applied to the second intermediate electrode 302, so that the first intermediate electrode 301 can serve as the anode of the second OLED light-emitting device, and the second intermediate electrode 302 can serve as the cathode of the second OLED light-emitting device. Similarly, a lower potential than that of the second intermediate electrode 302 is applied to the counter electrode 202, so that the second intermediate electrode 302 can serve as the anode of the third OLED light-emitting device, and the counter electrode 202 can serve as the cathode of the third OLED light-emitting device. Therefore, by applying corresponding potentials to the first electrode 201, the first intermediate electrode 301, the second intermediate 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 individually 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 further include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer disposed 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 disposed between the counter electrode 202 and the organic light-emitting layer. The specific configuration is determined according to actual needs, and this embodiment does not impose any restrictions on this.

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

[0139] For example, the light emitted by the first light-emitting layer EL1 can be any one of red, blue, green, and white; the light emitted by the second light-emitting layer EL2 can be any one of red, blue, green, and white; and the light emitted by the third light-emitting layer EL3 can be any one of red, blue, green, and white, as long as the colors of the light emitted by the first, second, and third light-emitting layers EL1 and EL2 are different. Thus, the light emitted by the light-emitting panel 1000 is the superposition of the three different colors emitted by the first, second, and third light-emitting layers EL1 and EL2. Furthermore, by adjusting the voltage applied to the first, second, and / or third light-emitting layers EL1 and EL2, and / or EL3, the ratio of the emitted color and brightness of the first, second, and third light-emitting layers EL1 and EL2 can be adjusted, enabling the light-emitting panel to achieve adjustable color temperature. The colors of the light emitted by the first, second, and third light-emitting layers EL1 and EL2 can be set according to the needs of the actual application scenario.

[0140] For example, the light emitted by the first EL1 layer can be red, the light emitted by the second EL2 layer can be blue, and the light emitted by the third EL3 layer can be green. Alternatively, the light emitted by the first EL1 layer can be blue, the light emitted by the second EL2 layer can be red, and the light emitted by the third EL3 layer can be green. Or, the light emitted by the first EL1 layer can be green, the light emitted by the second EL2 layer can be red, and the light emitted by the third EL3 layer can be blue. Or, the light emitted by the first EL1 layer can be green, the light emitted by the second EL2 layer can be red, and the light emitted by the third EL3 layer can be white. These are just a few examples; the requirement is that the colors of the light emitted by the first EL1 layer, the second EL2 layer, and the third EL3 layer are all different.

[0141] Referring to Figure 21, the light-emitting panel 1000 has a third cross-section, which is a cross-section along the section line DD. The third cross-section is perpendicular to the substrate 100, parallel to the direction of electrical connection between the second intermediate electrode 302 and the third connecting electrode L3, and passes through the third connecting 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 away 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 and the counter electrode 202 can be isolated, avoiding a short circuit between the second intermediate electrode 302 and the counter electrode 202.

[0142] Referring again to Figure 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, preventing a short circuit between the first intermediate electrode 301 and the second intermediate electrode 302.

[0143] Referring to Figure 22, the light-emitting panel 1000 has a fifth cross-section, which is a cross-section along the section line EE. The fifth cross-section is perpendicular to the substrate 100, parallel to the direction of electrical connection between the counter electrode 202 and the second connecting electrode L2, and passes through the second connecting 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 and the counter electrode 202 can be isolated, avoiding a short circuit between the second intermediate electrode 302 and the counter electrode 202.

[0144] Referring again to Figure 22, in the fifth 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 and the counter electrode 202 can be isolated, preventing a short circuit between them. In the fifth section, the boundary of the second intermediate electrode 302 is also within the boundary range of the second light-emitting layer EL2, further preventing a short circuit between the first intermediate electrode 301 and the second intermediate electrode 302.

[0145] Referring to Figure 23, the light-emitting panel 1000 has a sixth cross section, which is a cross section along the section line FF. The sixth cross section is perpendicular to the substrate 100, parallel to the direction of electrical connection between the first intermediate electrode 301 and the first connecting electrode L1, and passes through the first connecting 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 and the counter electrode 202 can be isolated to avoid short circuit between the second intermediate electrode 302 and the counter electrode 202.

[0146] Referring again to Figure 23, in the sixth 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, preventing a short circuit between the first intermediate electrode 301 and the second intermediate electrode 302.

[0147] Referring to Figures 21, 22, and 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 plurality of connecting electrodes also extend out of an encapsulating adhesive layer 103. This facilitates the connection of the first electrode 201, the first intermediate electrode 301, the second intermediate electrode 302, and the counter electrode 202 with the controller in the light-emitting device using the light-emitting panel 1000.

[0148] In some embodiments, referring to Figures 21, 22, and 23, when 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 further includes: a light-shielding layer T disposed between the substrate 100 and the first light-emitting layer EL1, the light-shielding layer T defining 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 overlapping at least within the first opening K1; in a positive projection onto the substrate 100, the light-shielding layer T covers the gap region between the first connecting electrode L1 and the first electrode 201, and the gap region between the second connecting electrode L2 and the first electrode 201. The light-shielding 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. This avoids the phenomenon of light leakage and the appearance of a halo at the edge of the light-emitting panel 1000 due to the different light-emitting areas of the first light-emitting layer EL1, the second light-emitting layer EL2, and the third light-emitting layer EL3, thus improving the light-emitting quality of the light-emitting panel 1000.

[0149] For example, continuing to refer to Figures 21, 22 and 23, the light-shielding layer T is disposed 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 edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other, and the edges of the third connecting electrode L3 and the first electrode 201 that 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 all extend along the sidewall of the light-shielding layer T to the side of the light-shielding layer T away from the substrate 100. This ensures that the luminous areas of the first luminous layer EL1, the second luminous layer EL2, and the third luminous layer EL3 are larger than the first opening K1. The luminous areas of the first luminous layer EL1, the second luminous layer EL2, and the third luminous layer EL3 can all cover the first opening K1. The light emitted by the light-emitting panel 1000 is the light after the first luminous layer EL1, the second luminous layer EL2, and the third luminous layer EL3 are stacked, which enables the light-emitting panel 1000 to achieve the function of adjustable color temperature while improving the luminous quality of the light-emitting panel 1000.

[0150] For example, the light-shielding layer T is embedded between the edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, between the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other, and between the edges of the third connecting electrode and the first electrode 201 that are close to each other; or, the light-shielding layer T is disposed between the substrate 100 and the first electrode 201, and in a positive projection onto the substrate 100, the light-shielding layer T overlaps with the edges of the first connecting electrode L1 and the first electrode 201 that are close to each other, overlaps with the edges of the second connecting electrode L2 and the first electrode 201 that are close to each other, and overlaps with the edges of the third connecting electrode L3 and the first electrode 201 that are close to each other. This embodiment uses the example of the light-shielding layer T being disposed between the substrate 100 and the first electrode 201 for illustration.

[0151] Referring to Figures 24, 25, and 26, in the orthographic projection onto the substrate 100, the boundary of the third light-emitting layer EL3 is located between the first boundary T1 and the second boundary T2 of the light-shielding layer T. This ensures that the light-emitting area of ​​the third light-emitting layer EL3 is 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, enabling the light-emitting panel 1000 to achieve adjustable color temperature while improving the light emission quality of the light-emitting panel 1000.

[0152] The embodiments of this disclosure also provide a light-emitting device M. Referring to FIG27, the light-emitting device M includes: a light-emitting panel 1000 as described in any of the above embodiments and a controller Q. The controller Q is connected to a first electrode 201 of the light-emitting panel 1000 and a plurality of connecting electrodes L, thereby realizing 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 realized 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 also includes a third light-emitting layer and a second intermediate electrode, and the multiple connecting electrodes L also include a third connecting portion L3, referring to FIG28, the controller Q is also connected to the third connecting portion L3, thereby realizing signal transmission between the controller Q and the second intermediate electrode.

[0155] The light-emitting device M provided in this embodiment of the invention can be applied to eye-protection desk lamps, medical aesthetic 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 connecting electrode L1, the second connecting electrode L2 and the third connecting electrode L3 are all connected to the flexible printed circuit, and the flexible printed circuit provides signals to the first electrode 201, the first connecting electrode L1, the second connecting electrode L2 and the third connecting electrode L3 respectively to control the light-emitting panel 1000 to emit light.

[0157] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A light-emitting panel, comprising: Substrate; The first electrode is disposed on one side of the substrate; The counter electrode is disposed on the 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; Multiple connecting electrodes are disposed around the first electrode, with the multiple connecting electrodes spaced apart from each other and between the connecting electrodes and the first electrode. The counter electrode and the intermediate electrode are each electrically connected to at least one of the connecting electrodes.

2. The light-emitting panel according to claim 1, wherein, 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 sequentially 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, wherein, The light-emitting panel has a first cross-section, which is perpendicular to the substrate, parallel to the direction of electrical connection between the first intermediate electrode and 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 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, wherein, The light-emitting panel has a second cross section, which is perpendicular to the substrate, parallel to the direction in which the counter electrode and the second connecting electrode are electrically connected, 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, further comprising: A light-shielding layer is 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 within the first opening; In a normal projection onto the substrate, the light-shielding layer covers the gap region between the first connecting electrode and the first electrode, as well as the gap region between the second connecting electrode and the first electrode.

6. The light-emitting panel according to claim 5, wherein, The light-shielding layer is disposed on the 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 edges of the first connecting electrode and the first electrode that are close to each other, as well as the edges of the second connecting electrode and the first electrode that are close to each other.

7. The light-emitting panel according to claim 6, wherein, Both the first light-emitting layer and the second light-emitting layer extend along the sidewall of the light-shielding layer to the side of the light-shielding layer away from the substrate.

8. The light-emitting panel according to claim 6 or 7, wherein, 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 extends across the light-shielding layer and is electrically connected to the first connecting electrode; The second edge is located on the side of the light-shielding layer away from the substrate.

9. The light-emitting panel according to any one of claims 6 to 8, wherein, 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; The fourth edge is located on the side of the light-shielding layer away from the substrate.

10. The light-emitting panel according to claim 5, wherein, 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 light-shielding layer is disposed between the substrate and the first electrode. In the orthographic projection onto the substrate, the light-shielding layer overlaps with the edges of the first connecting electrode and the first electrode that are close to each other, and also overlaps with the edges of the second connecting electrode and the first electrode that are close to each other.

11. The light-emitting panel according to claim 10, wherein, The light-shielding layer includes a first boundary near the first opening and a second boundary away from the first opening; In a normal projection onto the substrate, the boundaries of the first light-emitting layer and the second light-emitting layer are both located between the first and second boundaries of the light-shielding layer.

12. The light-emitting panel according to claim 10 or 11, wherein, 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 near the first opening and a second boundary away from the first opening; in a positive 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, wherein, 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 near the first opening and a second boundary away from the first opening; in a positive 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, wherein, Along the electrical connection direction between the counter electrode and the second connecting electrode, the cross-sectional shape of the third edge of the counter electrode includes a stepped shape.

15. The light-emitting panel according to any one of claims 5 to 14, wherein, The first electrode and the first intermediate electrode are able to transmit light, while the counter electrode is able to reflect light.

16. The light-emitting panel according to claim 1, wherein, The light emitted by at least two of the at least two light-emitting layers is of a different color.

17. The light-emitting panel according to any one of claims 2 to 16, wherein, The first electrode includes an electrode body and an extension sub-part connected to the electrode body, the extension sub-part being disposed 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 disposed around the electrode body, and the first connecting electrode, the second connecting electrode and the extension sub-part are spaced apart from each other.

18. The light-emitting panel according to claim 17, wherein, The extension sub-parts are located on opposite sides of the electrode body; and / or, Along a first direction, the first connecting electrodes are disposed on opposite sides of the electrode body; and / or, Along the second direction, the second connecting electrode is disposed on opposite sides of the electrode body; the first direction and the second direction intersect.

19. The light-emitting panel according to claim 18, wherein, The light-emitting panel includes two sets of first connecting electrodes, each set of first connecting electrodes including two first connecting electrodes respectively disposed on opposite sides of the electrode body along the first direction; On the same side of the electrode body, the extension sub-part is located between the two first connecting electrodes.

20. The light-emitting panel according to any one of claims 1 to 19, wherein, The plurality of connecting electrodes further includes a third connecting electrode, which is spaced apart from the first electrode, the first connecting electrode, and the second connecting electrode; the third connecting electrode is disposed around the first electrode. The light-emitting panel also includes: A third light-emitting layer and a second intermediate electrode are disposed on the side of the second light-emitting layer away from the substrate. The third light-emitting layer is 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 overlap. The second intermediate electrode is electrically connected to the third connecting electrode.

21. The light-emitting panel according to claim 20, wherein, The light-emitting panel has a third cross section, which is perpendicular to the substrate, parallel to the direction of electrical connection between the second intermediate electrode and 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 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, wherein, The first electrode, the intermediate electrode, and the counter electrode are configured to apply voltages, and the voltage magnitudes of at least two of the first electrode, the intermediate electrode, and the counter electrode are not equal.

23. A light-emitting device, comprising: 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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