Light-emitting panel and light-emitting device

Abstract

Embodiments of the present disclosure relate to the technical field of lighting, and provide a light-emitting panel and a light-emitting device, for use in enabling the light-emitting panel to achieve a color temperature adjustable function while taking high connection reliability into account. The light-emitting panel comprises a substrate, a first electrode layer, a first light-emitting layer, a second electrode layer, a second light-emitting layer, and a third electrode layer. The first electrode layer comprises an electrode layer body and a plurality of connecting portions arranged around the electrode layer body. The plurality of connecting portions include a first connecting portion, a second connecting portion, and a third connecting portion. The first connecting portion, the second connecting portion, and the third connecting portion are spaced apart from each other. The quantity of at least one of the first connecting portion, the second connecting portion and the third connecting portion is at least two. The electrode layer body, the first light-emitting layer, the second electrode layer, the second light-emitting layer and the third electrode layer overlap each other. The second electrode layer is in lap joint with the second connecting portion, and the third electrode layer is in lap joint with the third connecting portion. 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. 202411527928.5, 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 more particularly 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 currently 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, which enables the light-emitting panel to achieve adjustable color temperature while also ensuring high connection reliability.

[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 layer, a first light-emitting layer, a second electrode layer, a second light-emitting layer, and a third electrode layer. The first electrode layer is disposed on one side of the substrate. The first electrode layer includes an electrode layer body and a plurality of connecting portions disposed around the electrode layer body. The plurality of connecting portions includes a first connecting portion, a second connecting portion, and a third connecting portion. The first connecting portion, the second connecting portion, and the third connecting portion are spaced apart from each other. The electrode layer body is connected to the first connecting portion. The second connecting portion and the third connecting portion are spaced apart from the electrode layer body. The number of at least one of the first connecting portion, the second connecting portion, and the third connecting portion is at least two. The first light-emitting layer, the second electrode layer, the second light-emitting layer, and the third electrode layer are sequentially stacked on the side of the first electrode layer away from the substrate in a direction away from the substrate. The electrode layer body, the first light-emitting layer, the second electrode layer, the second light-emitting layer, and the third electrode layer overlap. The second electrode layer overlaps with the second connecting portion, and the third electrode layer overlaps with the third connecting portion.

[0007] In the aforementioned light-emitting panel, on one hand, the panel includes a first light-emitting layer, a second electrode layer, a third electrode layer, and a first electrode layer stacked sequentially along the direction away from the substrate on the side of the first electrode layer away from the substrate. The electrode layer body in the first electrode layer is connected to the first connecting portion, the second electrode layer overlaps with the second connecting portion, and the third electrode layer overlaps with the third connecting portion. Therefore, the electrode layer body and the second electrode layer can provide the voltage required for the first light-emitting layer to emit light, and the second and third electrode layers 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 emitted 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] On the other hand, among the multiple connecting parts, at least one of the first connecting part, the second connecting part, and the third connecting part has at least two connections; therefore, at least one of the electrode layer body, the second electrode layer, and the third electrode layer has at least two connection ends with the external power source, which can improve the reliability of the electrical connection between the electrode layer body, the second electrode layer, and the third electrode layer and the external power source.

[0009] In summary, the light-emitting panel can achieve adjustable color temperature while maintaining high connection reliability.

[0010] In some embodiments, the number of first connection portions is at least two, and at least two first connection portions are not adjacent along the circumference of the electrode layer body, and / or; the number of second connection portions is at least two, and at least two second connection portions are not adjacent along the circumference of the electrode layer body, and / or; the number of third connection portions is at least two, and at least two third connection portions are not adjacent along the circumference of the electrode layer body.

[0011] In some embodiments, the first electrode layer includes at least one pair of first connections, each pair of first connections including two first connections disposed on opposite sides of the electrode layer body; and / or, the first electrode layer includes at least one pair of second connections, each pair of second connections including two second connections disposed on opposite sides of the electrode layer body; and / or, the first electrode layer includes at least one pair of third connections, each pair of third connections including two third connections disposed on opposite sides of the electrode layer body.

[0012] In some embodiments, the line connecting the centers of the two first connecting portions of the first connecting portion passes through the center of the electrode layer body; and / or, the line connecting the centers of the two second connecting portions of the second connecting portion passes through the center of the electrode layer body; and / or, the line connecting the centers of the two third connecting portions of the third connecting portion passes through the center of the electrode layer body.

[0013] In some embodiments, the electrode layer body is an axisymmetric pattern having at least two axes of symmetry; the first connecting portion is symmetrical about two of the included first connecting portions with respect to one axis of symmetry of the electrode layer body; and / or, the second connecting portion is symmetrical about two of the included second connecting portions with respect to one axis of symmetry of the electrode layer body; and / or, the third connecting portion is symmetrical about two of the included third connecting portions with respect to one axis of symmetry of the electrode layer body.

[0014] In some embodiments, the number of the first connection portion, the second connection portion, and the third connection portion is at least two, and the first connection portion, the second connection portion, and the third connection portion are arranged periodically along the circumference of the electrode layer body.

[0015] In some embodiments, the electrode layer body, the first connecting portion, the second connecting portion, and the third connecting portion are made of the same material; among the electrode layer body, the second electrode layer, and the third electrode layer, any two with unequal sheet resistances, the area of ​​the connecting portion connected to the one with the relatively larger sheet resistance is greater than the area of ​​the connecting portion connected to the one with the smaller sheet resistance.

[0016] In some embodiments, the sheet resistance of the electrode layer body is greater than the sheet resistance of the second electrode layer, and the area of ​​the first connection portion is greater than the area of ​​the second connection portion; and / or, the sheet resistance of the electrode layer body is greater than the sheet resistance of the third electrode layer, and the area of ​​the first connection portion is greater than the area of ​​the third connection portion; and / or, the sheet resistance of the second electrode layer is greater than the sheet resistance of the third electrode layer, and the area of ​​the second connection portion is greater than the area of ​​the third connection portion.

[0017] In some embodiments, the edges of the electrode layer body and the connecting portion that are close to each other are parallel to each other.

[0018] In some embodiments, the electrode layer body is rectangular in shape; at least two of a first connecting portion, a second connecting portion, and a third connecting portion are provided on one side of each long side of the electrode layer body; at least one of a first connecting portion, a second connecting portion, and a third connecting portion is provided on one side of each short side of the electrode layer body; and the number of connecting portions provided on one side of each long side of the electrode layer body is greater than the number of connecting portions provided on one side of each short side of the electrode layer body.

[0019] In some embodiments, the electrode layer body has a first axis of symmetry parallel to the length direction of the electrode layer body and a second axis of symmetry parallel to the width direction of the electrode layer body; the first connecting portion, the second connecting portion and the third connecting portion are all symmetrically arranged with respect to the first axis of symmetry or the second axis of symmetry.

[0020] In some embodiments, the lines connecting the centers of the first connecting portions located on opposite sides of the electrode layer body, the lines connecting the centers of the second connecting portions located on opposite sides of the electrode layer body, and the lines connecting the centers of the third connecting portions located on opposite sides of the electrode layer body all pass through the center of the electrode layer body.

[0021] In some embodiments, the electrode layer body is a regular N-gon, where N is an even number and N is greater than or equal to 4; a connecting portion is provided on one side of each side of the electrode layer body; the first connecting portion, the second connecting portion and the third connecting portion are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body.

[0022] In some embodiments, the electrode layer body is circular or annular in shape; an even number of first connecting portions, an even number of second connecting portions, and an even number of third connecting portions are provided on the outer side of the circular boundary or the outer side of the annular boundary; the first connecting portions, the second connecting portions, and the third connecting portions are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body.

[0023] In some embodiments, the electrode layer body is annular in shape; at least two of a first connecting portion, a second connecting portion, and a third connecting portion are provided on the outer side of the outer boundary of the electrode layer body; at least one of a first connecting portion, a second connecting portion, and a third connecting portion is provided on the inner side of the inner boundary of the electrode layer body; and the first connecting portion, the second connecting portion, and the third connecting portion located on the outer boundary or the inner boundary are all symmetrically arranged with respect to an axis of symmetry of the electrode layer body.

[0024] In some embodiments, along the radial direction of the electrode layer body, the first connecting portion located at the outer boundary overlaps with the first connecting portion located at the inner boundary; the second connecting portion located at the outer boundary overlaps with the second connecting portion located at the inner boundary; and the third connecting portion located at the outer boundary overlaps with the third connecting portion located at the inner boundary; or, along the radial direction of the electrode layer body, the first connecting portion located at the outer boundary overlaps with the second and third connecting portions located at the inner boundary; the second connecting portion located at the outer boundary overlaps with the first and third connecting portions located at the inner boundary; and the third connecting portion located at the outer boundary overlaps with the first and second connecting portions located at the inner boundary.

[0025] In some embodiments, the number of connectors is m, the number of electrode layers is n, and the relationship between the number of connectors and the number of electrode layers satisfies m = kn, where k is an integer greater than or equal to 2.

[0026] In some embodiments, the light emitted by the first light-emitting layer and the second light-emitting layer is of different colors.

[0027] In some embodiments, the first electrode layer further includes a fourth connecting portion disposed around the electrode layer body, the fourth connecting portion being spaced apart from the electrode layer body, the first connecting portion, the second connecting portion, and the third connecting portion; the light-emitting panel further includes a third light-emitting layer and a fourth electrode layer disposed on the side of the third electrode layer away from the substrate, the third light-emitting layer being closer to the substrate than the fourth electrode layer, and the electrode layer body, the first light-emitting layer, the second electrode layer, the second light-emitting layer, the third electrode layer, the third light-emitting layer, and the fourth electrode layer overlapping; the fourth electrode layer overlaps with the fourth connecting portion.

[0028] In some embodiments, the number of fourth connections is at least two, and the fourth connections are not adjacent to each other along the circumference of the electrode layer body.

[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 connected to a plurality of connecting portions of the light-emitting panel.

[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 layer 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 top view of another light-emitting panel provided according to some embodiments;

[0036] Figure 5 is a structural diagram of the first electrode layer in the light-emitting panel of Figure 4;

[0037] Figure 6 is a cross-sectional view of the light-emitting panel in Figure 4 along section line AA;

[0038] Figure 7 is a cross-sectional view of the light-emitting panel in Figure 4 along section line BB;

[0039] Figure 8 is a cross-sectional view of the light-emitting panel in Figure 4 along section line CC;

[0040] Figure 9 is a top view of another light-emitting panel provided according to some embodiments;

[0041] Figure 10 is a top view of another light-emitting panel provided according to some embodiments;

[0042] Figure 11 is a structural diagram of the first electrode layer in the light-emitting panel of Figure 10;

[0043] Figure 12 is a cross-sectional view of the light-emitting panel in Figure 10 along section line DD;

[0044] Figure 13 is a cross-sectional view of the light-emitting panel in Figure 10 along section line EE;

[0045] Figure 14 is a cross-sectional view of the light-emitting panel in Figure 10 along section line FF;

[0046] Figure 15 is a structural diagram of a first electrode layer according to some embodiments;

[0047] Figure 16 is a structural diagram of another first electrode layer provided according to some embodiments;

[0048] Figure 17 is a structural diagram of yet another first electrode layer provided according to some embodiments;

[0049] Figure 18 is a structural diagram of yet another first electrode layer provided according to some embodiments;

[0050] Figure 19 is a structural diagram of yet another first electrode layer provided according to some embodiments;

[0051] Figure 20 is a structural diagram of yet another first electrode layer provided according to some embodiments;

[0052] Figure 21 is a structural diagram of yet another first electrode layer provided according to some embodiments;

[0053] Figure 22 is a structural diagram of yet another first electrode layer provided according to some embodiments;

[0054] Figure 23 is a structural diagram of a light-emitting device according to some embodiments;

[0055] Figure 24 is a structural diagram of another light-emitting device provided according to some embodiments. Detailed Implementation

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] "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.

[0061] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] The embodiments of this disclosure provide a light-emitting panel 1000. Referring to Figures 1, 2 and 3, the light-emitting panel 1000 includes a substrate 100, a first electrode layer 201, a light-emitting layer EL, and a second electrode layer 202 stacked together.

[0068] The substrate 100 is made of a transparent material. For example, the substrate 100 can be a transparent flexible substrate, such as 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 transparent rigid substrate can be used, such as 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.

[0069] In some embodiments, continuing to refer to FIG3, a buffer layer 101 may be provided between the substrate 100 and the first electrode layer 201 to reduce the stress generated between the first electrode layer 201 and the substrate 100 when the first electrode layer 201 is formed.

[0070] Referring again to Figure 2, the first electrode layer 201 includes an electrode layer body 20 and a first connecting portion L1 and a second connecting portion L2 disposed around the electrode layer body 20. The first connecting portion L1 and the second connecting portion L2 are spaced apart from each other. The electrode layer body 20 is connected to the first connecting portion L1, and the second connecting portion L2 is spaced apart from the electrode layer body 20.

[0071] In the aforementioned light-emitting panel 1000, the electrode layer body 20, the light-emitting layer EL, and the second electrode layer 202 overlap; the second electrode layer 202 overlaps with the second connecting portion L2. Since the electrode layer body 20 is connected to the first connecting portion L1, and the second electrode layer 202 overlaps with the second connecting portion L2, the first connecting portion L1 and the second connecting portion L2 are spaced apart, which can prevent short circuits between the electrode layer body 20 and the second electrode layer 202, thus avoiding damage to the light-emitting panel 1000. In this way, the voltage signal of the electrode layer body 20 is input through the first connecting portion L1, and the voltage signal of the second electrode layer 202 is input through the second connecting portion L2, creating a voltage difference between the electrode layer body 20 and the second electrode layer 202, which provides the voltage required for the light-emitting layer EL to emit light, thereby enabling the light-emitting layer EL to emit light.

[0072] 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 of red, blue, green, or white, and the color of the light emitted is determined according to the specific lighting application. For example, when the light-emitting panel 1000 is used in a vehicle taillight, the EL can emit red light.

[0073] In this embodiment, the light-emitting panel 1000, electrode layer body 20, light-emitting layer EL, and second electrode layer 202 can constitute an OLED light-emitting device. The electrode layer body 20 can be configured as the anode of the OLED light-emitting device, and the second electrode layer 202 can be configured as the cathode of the OLED light-emitting device. If a relatively high potential is applied to the electrode layer body 20 and a relatively low potential is applied to the second electrode layer 202, holes are injected from the electrode layer body 20 through the hole transport layer into the organic light-emitting layer, and electrons are injected from the second electrode layer 202 through the electron transport layer into the organic light-emitting layer. Thus, holes from the electrode layer body 20 and electrons from the second electrode layer 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 electrode layer body 20 can be configured as the cathode of the OLED light-emitting device, and correspondingly, the second electrode layer 202 is configured as the anode of the OLED light-emitting device.

[0074] In this embodiment, the electrode layer body 20 is able to transmit light, the second electrode layer 202 is able to reflect light, and the light emitted by the light-emitting layer EL is emitted through the substrate 100.

[0075] In other embodiments, the electrode layer body 20 may reflect light, the second electrode layer 202 may transmit light, and the light emitted by the light-emitting layer EL may be emitted in a direction away from the substrate 100. The above-mentioned light-emitting panel 1000 has only one light-emitting layer EL, so it 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.

[0076] To solve the above-mentioned technical problems, the embodiments of this disclosure provide a light-emitting panel 1000. Referring to Figures 4, 5 and 6, the light-emitting panel 1000 includes: a substrate 100, a first electrode layer 201, a first light-emitting layer EL1, a second electrode layer 202, a second light-emitting layer EL2 and a third electrode layer 203.

[0077] The first electrode layer 201 is disposed on one side of the substrate 100. Referring to FIG5, the first electrode layer 201 includes an electrode layer body 20 and a plurality of connecting portions disposed around the electrode layer body 20. The plurality of connecting portions include a first connecting portion L1, a second connecting portion L2 and a third connecting portion L3. The first connecting portion L1, the second connecting portion L2 and the third connecting portion L3 are disposed at intervals from each other. The electrode layer body 20 is connected to the first connecting portion L1, and the second connecting portion L2 and the third connecting portion L3 are both disposed at intervals from the electrode layer body 20.

[0078] Referring to Figures 6, 7, and 8, the first light-emitting layer EL1, the second electrode layer 202, the second light-emitting layer EL2, and the third electrode layer 203 are sequentially stacked on the side of the first electrode layer 201 away from the substrate 100 along the direction away from the substrate 100. The electrode layer body 20, the first light-emitting layer EL1, the second electrode layer 202, the second light-emitting layer EL2, and the third electrode layer 203 overlap. The second electrode layer 202 overlaps with the second connecting portion L2, and the third electrode layer 203 overlaps with the third connecting portion L3.

[0079] Referring to Figure 6, the electrode layer body 20 is connected to the first connecting portion L1. Referring to Figure 7, the second electrode layer 202 overlaps with the second connecting portion L2. Referring to Figure 8, the third electrode layer 203 overlaps with the third connecting portion L3. Therefore, the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 are spaced apart from each other, which can prevent short circuits between any two of the electrode layer body 20, the second electrode layer 202, and the third electrode layer 203, thus avoiding damage to the light-emitting panel 1000. In this way, the voltage signal of the electrode layer body 20 can be input through the first connecting portion L1, the voltage signal of the second electrode layer 202 can be input through the second connecting portion L2, and the voltage signal of the third electrode layer 203 can be input through the third connecting portion L3.

[0080] In this embodiment, the light-emitting panel 1000 includes a first light-emitting layer EL1, a second electrode layer 202, a second light-emitting layer EL2, and a third electrode layer 203, which are sequentially stacked on the side of the first electrode layer 201 away from the substrate 100 along a direction away from the substrate 100. Specifically, the electrode layer body 20 in the first electrode layer 201 is connected to the first connecting portion L1, the second electrode layer 202 overlaps with the second connecting portion L2, and the third electrode layer 203 overlaps with the third connecting portion L3. Therefore, the electrode layer body 20 and the second electrode layer 202 can provide the voltage required for the first light-emitting layer EL1 to emit light, and the second electrode layer 202 and the third electrode layer 203 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 1000 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 magnitude of the voltage applied to the first light-emitting layer EL1 and / or the magnitude of the voltage applied to the second light-emitting layer EL2, so that the light-emitting panel 1000 can achieve the function of adjustable color temperature.

[0081] In the aforementioned light-emitting panel 1000, the electrode layer body 20, the first light-emitting layer EL1, and the second electrode layer 202 can constitute a first OLED light-emitting device, and the second electrode layer 202, the second light-emitting layer EL2, and the third electrode layer 203 can constitute a second OLED light-emitting device. That is, the second electrode layer 202 can be an electrode in either the first or second OLED light-emitting device. For example, by applying a relatively high potential to the electrode layer body 20 and a relatively low potential to the second electrode layer 202, the electrode layer body 20 can serve as the anode of the first OLED light-emitting device, and the second electrode layer 202 can serve as the cathode. Furthermore, by applying a relatively low potential to the third electrode layer 203 compared to the second electrode layer 202, the second electrode layer 202 can serve as the anode of the second OLED light-emitting device, and the third electrode layer 203 can serve as the cathode. By applying corresponding potentials to the electrode layer body 20, the second electrode layer 202, and the third electrode layer 203, the first and second OLED light-emitting devices can emit light separately or simultaneously.

[0082] 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 electrode layer body 20 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 second electrode layer 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.

[0083] 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 second electrode layer 202 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 third electrode layer 203 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.

[0084] In some embodiments, the electrode layer body 20 and the second electrode layer 202 are transmissive to light, while the third electrode layer 203 is reflective to light. In this case, the light emitted by the first light-emitting layer EL1 and the second light-emitting layer EL2 is emitted through the substrate 100. In other embodiments, the second electrode layer 202 and the third electrode layer 203 are transmissive to light, while the electrode layer body 20 is reflective to light. In this case, 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. In some embodiments, the light emitted by the first light-emitting layer EL1 and the second light-emitting layer EL2 is of different colors.

[0085] 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. 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 emitting layer EL1 and the second emitting layer EL2 can be adjusted, enabling the light-emitting panel 1000 to achieve adjustable color temperature. 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.

[0086] Referring to Figure 9, the light-emitting panel 1000 further includes an encapsulation structure 102 located on the side of the third electrode layer 203 away from the substrate 100 and covering the sidewall of the third electrode layer 203, a portion of the second light-emitting layer EL2, and a portion of the sidewall of the second electrode layer 202. The encapsulation structure 102 encapsulates the third electrode layer 203, the second light-emitting layer EL2, and the second electrode layer 202, preventing leakage of the third electrode layer 203, protecting the third electrode layer 203, the second light-emitting layer EL2, and the second electrode layer 202, and preventing external water and oxygen from corroding the first light-emitting layer EL1 and the second light-emitting layer EL2.

[0087] 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 )

[0088] Referring again to Figure 9, 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 achieve encapsulation protection for the first light-emitting layer EL1, the second electrode layer 202, the second light-emitting layer EL2, and the third electrode layer 203.

[0089] The cover plate 104 can be made of tempered glass, reinforced glass, etc.

[0090] The first connecting portion L1, the second connecting portion L2, and the third connecting portion 23 in the aforementioned 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 first light-emitting layer EL1 to emit light through the first connecting portion L1 and the second connecting portion L2, and input the signal required for the second light-emitting layer EL2 to emit light through the second connecting portion L2 and the third connecting portion L3.

[0091] In some embodiments, referring to Figures 10 and 11, the first electrode layer 201 further includes a fourth connecting portion L4 disposed around the electrode layer body 20. The fourth connecting portion L4 is disposed at intervals from the electrode layer body 20, the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3. Referring to Figure 12, the light-emitting panel 1000 further includes a third light-emitting layer EL3 and a fourth electrode layer 204 disposed on the side of the third electrode layer 203 away from the substrate 100. The third light-emitting layer EL3 is closer to the substrate 100 than the fourth electrode layer 204, and the electrode layer body 20, the first light-emitting layer EL1, the second electrode layer 202, the second light-emitting layer EL2, the third electrode layer 203, the third light-emitting layer EL3, and the fourth electrode layer 204 overlap. The fourth electrode layer 204 overlaps with the fourth connecting portion L4.

[0092] In the light-emitting panel 1000 provided in the above embodiment, referring to FIG12, the second electrode layer 202 overlaps with the second connecting portion L2; referring to FIG13, the third electrode layer 203 overlaps with the third connecting portion L3; and referring to FIG14, the fourth electrode layer 204 overlaps with the fourth connecting portion L4. Therefore, the electrode layer body 20 and the second electrode layer 202 can provide the voltage required for the first light-emitting layer EL1 to emit light; the second electrode layer 202 and the third electrode layer 203 can provide the voltage required for the second light-emitting layer EL2 to emit light; and the third electrode layer 203 and the fourth electrode layer 204 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 1000 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, by adjusting the magnitude of the voltage applied to the first light-emitting layer EL1, and / or the magnitude of the voltage applied to the second light-emitting layer EL2, and / or the magnitude of the voltage applied to the third light-emitting layer EL3, the ratio of the emission color and the 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, so that the light-emitting panel 1000 can achieve the function of adjustable color temperature.

[0093] When the light-emitting panel 1000 further includes a third light-emitting layer EL3 and a fourth electrode layer 204, the electrode layer body 20, the second electrode layer 202, and the third electrode layer 203 are able to transmit light, while the fourth electrode layer 204 is able to reflect light. Specifically, the electrode layer body 20, the first light-emitting layer EL1, and the second electrode layer 202 can constitute a first OLED light-emitting device; the second electrode layer 202, the second light-emitting layer EL2, and the third electrode layer 203 can constitute a second OLED light-emitting device; and the third electrode layer 203, the third light-emitting layer EL3, and the fourth electrode layer 204 can constitute a third OLED light-emitting device. That is, the second electrode layer 202 can be an electrode in either the first or second OLED light-emitting device, and the third electrode layer 202 can be an electrode in either the second or third OLED light-emitting device.

[0094] 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 third electrode layer 203 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 fourth electrode layer 204 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] In some embodiments, the light-emitting panel 1000 may further include more light-emitting layers, such as a fourth light-emitting layer, a fifth light-emitting layer, and a sixth light-emitting layer, etc., so that the light-emitting panel 1000 can achieve diverse color temperature adjustable functions according to the needs of actual application scenarios, thereby meeting more lighting requirements for the light-emitting panel 1000. When the light-emitting panel 1000 includes more light-emitting layers, the light-emitting panel 1000 also needs to be provided with corresponding electrode layers, such that each light-emitting layer is sandwiched between two adjacent electrode layers, so that the two adjacent electrode layers input the voltage signal required for light emission to the light-emitting layer sandwiched in the middle.

[0099] With the light-emitting panel 1000 enabling adjustable color temperature, the number of electrode layers also increases. If there is an open circuit or poor connection between an electrode layer and an external power source, the light-emitting layer adjacent to that electrode layer will not emit light normally, thus affecting the adjustable color temperature function of the light-emitting panel 1000.

[0100] To address the aforementioned technical problems, this embodiment provides a light-emitting panel 1000. Referring again to FIG5, in the case where the light-emitting panel 1000 includes a substrate 100, a first electrode layer 201, a first light-emitting layer EL1, a second electrode layer 202, a second light-emitting layer EL2, and a third electrode layer 203, the first electrode layer 201 includes multiple connecting portions L, which include a first connecting portion L1, a second connecting portion L2, and a third connecting portion L3. At least one of the first connecting portions L1, the second connecting portion L2, and the third connecting portion L3 is at least two in number. Thus, at least one of the electrode layer body 20, the second electrode layer 202, and the third electrode layer 203 has at least two connection terminals with an external power source, thereby improving the reliability of the electrical connection between at least one of the electrode layer body 20, the second electrode layer 202, and the third electrode layer 203 and the external power source. Furthermore, the light-emitting panel 1000 can achieve adjustable color temperature while maintaining high connection reliability.

[0101] In some embodiments, the number of connections is m, and the number of electrode layers is n. The relationship between the number of connections and the number of electrode layers satisfies m = kn, where k is an integer greater than or equal to 2. For example, the number of connections connected to each electrode layer can be k, and k is an integer greater than or equal to 2. k can be 2, 3, 4, or 6, or other integers. In this way, there are k connection terminals between each electrode layer and the external power supply, thereby improving the reliability of the electrical connection between each electrode layer and the external power supply.

[0102] In some embodiments, referring further to FIG5, the edges of the electrode layer body 20 and the connecting portion L that are close to each other are parallel to each other. This can shorten the distance between the electrode layer body 20 and the connecting portion L, thereby reducing the area occupied by the first electrode layer 201 and helping to reduce the volume of the light-emitting panel 1000.

[0103] In some embodiments, the number of first connection portions L1 is at least two, and at least two first connection portions L1 are not adjacent along the circumference of the electrode layer body 20. This ensures the electrical connection reliability of the light-emitting panel 1000 while allowing the voltage signal provided by the external power supply to be accessed from different locations on the electrode layer body 20. This avoids the voltage drop problem caused by accessing the voltage signal from a single location, and prevents uneven voltage drops across the electrode layer body 20 that could lead to excessive local current in the light-emitting panel 1000 during light emission, thus avoiding uneven brightness display due to localized over-brightness. Therefore, the fact that at least two first connection portions L1 are not adjacent improves the uniformity of the voltage on the electrode layer body 20, thereby improving the uniformity of the light emission brightness of the light-emitting panel 1000.

[0104] In some embodiments, the number of second connection portions L2 is at least two, and at least two second connection portions L2 are not adjacent along the circumference of the electrode layer body 20. This can improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0105] In some embodiments, the number of third connecting portions L3 is at least two, and at least two third connecting portions L3 are not adjacent along the circumference of the electrode layer body 20. This can improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0106] In some embodiments, at least two first connecting portions L1 are not adjacent, and at least two second connecting portions L2 are not adjacent. Alternatively, at least two first connecting portions L1 are not adjacent, and at least two third connecting portions L3 are not adjacent. Alternatively, at least two second connecting portions L2 are not adjacent, and at least two third connecting portions L3 are not adjacent. Alternatively, at least two first connecting portions L1 are not adjacent, at least two second connecting portions L2 are not adjacent, and at least two third connecting portions L3 are not adjacent. All of these can improve the uniformity of the luminous brightness of the light-emitting panel 1000.

[0107] For example, continuing to refer to FIG5, there are four first connecting portions L1, and the four first connecting portions L1 are not adjacent along the circumference of the electrode layer body 20; and there are two second connecting portions L2, and the two second connecting portions L2 are not adjacent along the circumference of the electrode layer body 20; and there are two third connecting portions L3, and the two third connecting portions L3 are not adjacent along the circumference of the electrode layer body 20.

[0108] For example, referring to FIG15, there are two first connection portions L1, and the two first connection portions L1 are not adjacent along the circumference of the electrode layer body 20; and there are four second connection portions L2, and the four second connection portions L2 are not adjacent along the circumference of the electrode layer body 20; and there are four third connection portions L3, and the four third connection portions L3 are not adjacent along the circumference of the electrode layer body 20.

[0109] In some embodiments, the first electrode layer 201 includes at least one first connection pair D1, and the two first connection portions L1 included in each first connection pair D1 are disposed on opposite sides of the electrode layer body 20. Since there is resistance on the electrode layer body 20, a voltage drop will occur during the transmission of the voltage signal. If the voltage signal is input only from one side of the electrode layer body 20, a significant voltage drop can easily occur on the electrode layer body 20, causing a noticeable brightness difference on both sides of the first light-emitting layer EL1. This will result in uneven brightness of the entire light-emitting panel 1000, with one end bright and the other dark. Therefore, distributing the two first connection portions L1 included in each first connection pair D1 on opposite sides of the electrode layer body 20 can avoid excessive impedance and voltage drop during the transmission of the voltage signal. This facilitates the synchronous transmission of the same signal from opposite sides of the electrode layer body 20, helps reduce the impact of voltage drop, and thus improves the uniformity of the light-emitting panel's brightness.

[0110] In some embodiments, the first electrode layer 201 includes at least one second connection pair D2, and the two second connection portions L2 included in each second connection pair D2 are disposed on opposite sides of the electrode layer body 20. This can improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0111] In some embodiments, the first electrode layer 201 includes at least one third connection pair D3, and the two third connection portions L3 included in each third connection pair D3 are disposed on opposite sides of the electrode layer body 20. This can improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0112] In some embodiments, the first electrode layer 201 includes at least one first connection pair D1 and at least one second connection pair D2; wherein the two first connection portions L1 included in each first connection pair D1 are disposed on opposite sides of the electrode layer body 20, and the two second connection portions L2 included in each second connection pair D2 are disposed on opposite sides of the electrode layer body 20. Alternatively, the first electrode layer 201 includes at least one first connection pair D1 and at least one third connection pair D3; wherein the two first connection portions L1 included in each first connection pair D1 are disposed on opposite sides of the electrode layer body 20, and the two third connection portions L3 included in each third connection pair D3 are disposed on opposite sides of the electrode layer body 20. Alternatively, the first electrode layer 201 includes at least one second connection pair D2 and at least one third connection pair D3; wherein the two second connection portions L2 included in each second connection pair D2 are disposed on opposite sides of the electrode layer body 20, and the two third connection portions L3 included in each third connection pair D3 are disposed on opposite sides of the electrode layer body 20. Alternatively, the first electrode layer 201 includes at least one second connecting pair D2, at least one second connecting pair D2, and at least one third connecting pair D3; wherein, the two first connecting portions L1 included in each first connecting pair D1 are disposed on opposite sides of the electrode layer body 20, the two second connecting portions L2 included in each second connecting pair D2 are disposed on opposite sides of the electrode layer body 20, and the two third connecting portions L3 included in each third connecting pair D3 are disposed on opposite sides of the electrode layer body 20. Both configurations can improve the uniformity of the luminous brightness of the light-emitting panel 1000.

[0113] For example, continuing to refer to FIG5, the first electrode layer 201 includes two first connection pairs D1, one second connection pair D2, and one third connection pair D3. Each first connection pair D1 includes two first connection portions L1 located on opposite sides of the electrode layer body 20; each second connection pair D2 includes two second connection portions L2 located on opposite sides of the electrode layer body 20; and each third connection pair D3 includes two third connection portions L3 located on opposite sides of the electrode layer body 20.

[0114] In some embodiments, referring to FIG15, the line connecting the centers O1 of the two first connecting portions L1 included in D1 passes through the center O of the electrode layer body 20. This avoids voltage signal drop due to excessive impedance during transmission, which is beneficial for synchronous transmission of the same signal from opposite sides of the electrode layer body 20, helps reduce the impact of voltage drop, and thus helps improve the uniformity of the light emission brightness of the light-emitting panel.

[0115] In some embodiments, the line connecting the centers O2 of the two second connecting portions L2 included in D2 passes through the center O of the electrode layer body 20. This can improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0116] In some embodiments, the line connecting the centers O3 of the two third connecting portions L3 included in D3 passes through the center O of the electrode layer body 20. This can improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0117] In some embodiments, the line connecting the centers O1 of the two first connecting portions L1 included in D1 passes through the center O of the electrode layer body 20, and the line connecting the centers O2 of the two second connecting portions L2 included in D2 passes through the center O of the electrode layer body 20. Alternatively, the line connecting the centers O2 of the two second connecting portions L2 included in D2 passes through the center O of the electrode layer body 20, and the line connecting the centers O3 of the two third connecting portions L3 included in D3 passes through the center O of the electrode layer body 20. Alternatively, the line connecting the centers O1 of the two first connecting portions L1 included in D1 passes through the center O of the electrode layer body 20, and the line connecting the centers of the two third connecting portions L3 included in D3 passes through the center O of the electrode layer body 20. Alternatively, the line connecting the centers O1 of the two first connecting portions L1 included in D1 passes through the center O of the electrode layer body 20, the line connecting the centers O2 of the two second connecting portions L2 included in D2 passes through the center O of the electrode layer body 20, and the line connecting the centers O3 of the two third connecting portions L3 included in D3 passes through the center O of the electrode layer body 20. This improves the uniformity of the light emission brightness of the light-emitting panel 1000.

[0118] For example, referring to FIG15, the line connecting the centers O1 of the two first connecting portions L1 included in D1 of the first connecting portion passes through the center O of the electrode layer body 20; and the line connecting the centers O2 of the two second connecting portions L2 included in D2 of the second connecting portion passes through the center O of the electrode layer body 20; and the line connecting the centers O3 of the two third connecting portions L3 included in D3 of the third connecting portion passes through the center O of the electrode layer body 20.

[0119] In some embodiments, referring to FIG5, the electrode layer body 20 is an axisymmetric shape with at least two axes of symmetry; the two first connecting portions L1 included in D1 are symmetrical with respect to one axis of symmetry of the electrode layer body 20. This avoids excessive impedance and voltage drop during voltage signal transmission, and facilitates the synchronous transmission of the same signal from opposite sides of the electrode layer body 20, which helps to reduce the impact of voltage drop and thus improves the uniformity of the light emission brightness of the light-emitting panel 1000.

[0120] In some embodiments, the electrode layer body 20 is an axisymmetric pattern having at least two axes of symmetry; the second connection portion is symmetrical about the two second connection portions L2 included in D2 with respect to one axis of symmetry of the electrode layer body 20.

[0121] In some embodiments, the electrode layer body 20 is an axisymmetric pattern having at least two axes of symmetry; the third connection portion is symmetrical about the two third connection portions L3 included in D3 with respect to one axis of symmetry of the electrode layer body 20.

[0122] In some embodiments, the electrode layer body 20 is an axisymmetric pattern having at least two axes of symmetry; wherein, the first connecting portion is symmetrical about one axis of symmetry of the electrode layer body 20 with respect to the two first connecting portions L1 included in D1, and the second connecting portion is symmetrical about one axis of symmetry of the electrode layer body 20 with respect to the two second connecting portions L2 included in D2. Alternatively, the first connecting portion is symmetrical about one axis of symmetry of the electrode layer body 20 with respect to the two first connecting portions L1 included in D1, and the third connecting portion is symmetrical about one axis of symmetry of the electrode layer body 20 with respect to the two third connecting portions L3 included in D3. Alternatively, the second connecting portion is symmetrical about one axis of symmetry of the electrode layer body 20 with respect to the two second connecting portions L2 included in D2, and the third connecting portion is symmetrical about one axis of symmetry of the electrode layer body 20 with respect to the two third connecting portions L3 included in D3. Alternatively, the first connecting portion is symmetrical about the two first connecting portions L1 included in D1 with respect to an axis of symmetry of the electrode layer body 20, and the second connecting portion is symmetrical about the two second connecting portions L2 included in D2 with respect to an axis of symmetry of the electrode layer body 20, and the third connecting portion is symmetrical about the two third connecting portions L3 included in D3 with respect to an axis of symmetry of the electrode layer body 20. All of these configurations can improve the uniformity of the luminous brightness of the light-emitting panel 1000.

[0123] Among them, axially symmetric figures can include rectangles, squares, regular hexagons, regular octagons, or circles, etc. Axially symmetric figures can also be rings, such as rectangular rings, square rings, regular hexagonal rings, regular octagonal rings, or circular rings, etc.

[0124] For example, referring to FIG5, the electrode layer body 20 is rectangular and has two axes of symmetry, namely a first axis of symmetry X1 and a second axis of symmetry X2. The first connecting portion is symmetrical about the two first connecting portions L1 included in D1 with respect to the first axis of symmetry X1 of the electrode layer body 20; the second connecting portion is symmetrical about the two second connecting portions L2 included in D2 with respect to the first axis of symmetry X1 of the electrode layer body 20; and the third connecting portion is symmetrical about the two third connecting portions L3 included in D3 with respect to the second axis of symmetry X2 of the electrode layer body 20.

[0125] For example, referring to FIG16, the electrode layer body 20 is a regular hexagon with at least three axes of symmetry, namely a first axis of symmetry Y1, a second axis of symmetry Y2, and a third axis of symmetry Y3. Specifically, the first connecting portion is symmetrical with respect to the first axis of symmetry Y1 of the electrode layer body 20 with respect to the two first connecting portions L1 included in D1; the second connecting portion is symmetrical with respect to the second axis of symmetry Y2 of the electrode layer body 20 with respect to the two second connecting portions L2 included in D2; and the third connecting portion is symmetrical with respect to the first axis of symmetry Y1 of the electrode layer body 20 with respect to the two third connecting portions L3 included in D3.

[0126] In some embodiments, the number of the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 are all at least two, and the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 are arranged periodically along the circumference of the electrode layer body 20. This ensures the reliability of the electrical connection of the light-emitting panel 1000 while also preventing uneven voltage drops at various points on the electrode layer body 20, which could lead to excessive local current during light emission from the light-emitting panel 1000. This, in turn, causes excessively bright local light emission from the light-emitting panel 1000, resulting in uneven brightness display. Therefore, the periodic arrangement of the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 along the circumference of the electrode layer body 20 improves the uniformity of the light emission brightness of the light-emitting panel 1000.

[0127] The aforementioned "first connecting part L1, second connecting part L2 and third connecting part L3 are arranged periodically along the circumference of the electrode layer body 20" can mean that at least two first connecting parts L1, at least two second connecting parts L2 and at least two third connecting parts L3 are arranged sequentially along the circumference of the electrode layer body 20 in the order of: first connecting part L1, second connecting part L2, third connecting part L3, first connecting part L1, second connecting part L2, third connecting part L3...

[0128] For example, referring to Figure 16, the electrode layer body 20 is a regular hexagon; referring to Figure 17, the electrode layer body 20 is circular; or referring to Figure 18, the electrode layer body 20 is annular. There are two of each of the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3, which are arranged periodically along the circumference of the electrode layer body 20.

[0129] In some embodiments, the electrode layer body 20, the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 are made of the same material; among the electrode layer body 20, the second electrode layer 202, and the third electrode layer 203, if any two have unequal sheet resistances, the area of ​​the connecting portion connected to the electrode layer body 20 with the relatively larger sheet resistance is greater than the area of ​​the connecting portion connected to the electrode layer body 20 with the smaller sheet resistance. Since the area of ​​the region where the connecting portions are arranged along the circumference of the electrode layer body 20 is fixed when the shape of the electrode layer body 20 is fixed, it is beneficial to reduce the resistance between the electrode layer body with the relatively larger sheet resistance and its connected portion when the area of ​​the connecting portion connected to the electrode layer body with the smaller sheet resistance is greater than the area of ​​the connecting portion connected to the electrode layer body with the smaller sheet resistance. This is beneficial to improving the overall voltage drop of the entire light-emitting panel 1000.

[0130] It should be noted that sheet resistance refers to the resistance of a film material with a fixed thickness, length, and width; it is also known as sheet resistivity or area resistivity.

[0131] In some embodiments, the sheet resistance of the electrode layer body 20 is greater than that of the second electrode layer 202, and the area of ​​the first connection portion L is greater than the area of ​​the second connection portion L2. This helps to improve the overall voltage drop of the entire light-emitting panel 1000.

[0132] In some embodiments, the sheet resistance of the electrode layer body 20 is greater than that of the third electrode layer 203, and the area of ​​the first connection portion L1 is greater than the area of ​​the third connection portion L3. This helps to improve the overall voltage drop of the entire light-emitting panel 1000.

[0133] In some embodiments, the sheet resistance of the second electrode layer 202 is greater than that of the third electrode layer 203, and the area of ​​the second connection portion L2 is greater than the area of ​​the third connection portion L3. This helps to improve the overall voltage drop of the entire light-emitting panel 1000.

[0134] In some embodiments, the sheet resistance of the electrode layer body 20 is greater than the sheet resistance of the second electrode layer 202, the area of ​​the first connecting portion L is greater than the area of ​​the second connecting portion L2, and the sheet resistance of the electrode layer body 20 is greater than the sheet resistance of the third electrode layer 203, and the area of ​​the first connecting portion L1 is greater than the area of ​​the third connecting portion L3. Alternatively, the sheet resistance of the electrode layer body 20 is greater than the sheet resistance of the second electrode layer 202, the area of ​​the first connecting portion L is greater than the area of ​​the second connecting portion L2, and the sheet resistance of the second electrode layer 202 is greater than the sheet resistance of the third electrode layer 203, and the area of ​​the second connecting portion L2 is greater than the area of ​​the second connecting portion L3. Alternatively, the sheet resistance of the electrode layer body 20 is greater than the sheet resistance of the third electrode layer 203, the area of ​​the first connecting portion L1 is greater than the area of ​​the third connecting portion L3, and the sheet resistance of the second electrode layer 203 is greater than the sheet resistance of the third electrode layer 202, and the area of ​​the second connecting portion L2 is greater than the area of ​​the third connecting portion L3. Alternatively, the sheet resistance of the electrode layer body 20 is greater than that of the second electrode layer 202, and the area of ​​the first connecting portion L is greater than the area of ​​the second connecting portion L2; and the sheet resistance of the electrode layer body 20 is greater than that of the third electrode layer 203, and the area of ​​the first connecting portion L1 is greater than the area of ​​the third connecting portion L3; and the sheet resistance of the second electrode layer 202 is greater than that of the third electrode layer 203, and the area of ​​the second connecting portion L2 is greater than the area of ​​the third connecting portion L3. This helps to improve the overall voltage drop of the entire light-emitting panel 1000.

[0135] For example, the electrode layer body 20, the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 are all made of indium tin oxide (ITO), and the sheet resistance of the electrode layer body 20 is 22.5. The second electrode layer 202 is made of magnesium-silver alloy (MgAg), and its sheet resistance is 5. The third electrode layer 203 is made of aluminum, and its sheet resistance is 0.06.

[0136] In this case, referring to Figure 5, the sheet resistance of the electrode layer body 20 is greater than the sheet resistance of the second electrode layer 202, and the area of ​​the first connecting portion L is greater than the area of ​​the second connecting portion L2; the sheet resistance of the electrode layer body 20 is greater than the sheet resistance of the third electrode layer 203, and the area of ​​the first connecting portion L1 is greater than the area of ​​the third connecting portion L3; the sheet resistance of the second electrode layer 202 is greater than the sheet resistance of the third electrode layer 203, and the area of ​​the second connecting portion L2 is greater than the area of ​​the third connecting portion L3.

[0137] In some embodiments, the electrode layer body 20 is rectangular in shape; at least two of a first connecting portion L1, a second connecting portion L2, and a third connecting portion L3 are provided on one side of each long side of the electrode layer body 20; at least one of a first connecting portion L1, a second connecting portion L2, and a third connecting portion L3 is provided on one side of each short side of the electrode layer body 20; and the number of connecting portions provided on one side of each long side of the electrode layer body 20 is greater than the number of connecting portions provided on one side of each short side of the electrode layer body 20. This is beneficial for improving the overall voltage drop of the entire light-emitting panel 1000.

[0138] For example, referring to FIG15, the electrode layer body 20 is rectangular in shape; a first connecting portion L1 and a second connecting portion L2 are provided on one side of each long side of the electrode layer body 20; a second connecting portion L2 and a third connecting portion L3 are provided on one side of each short side of the electrode layer body 20; and the number of connecting portions provided on one side of each long side of the electrode layer body 20 is 3, and the number of connecting portions provided on one side of each short side of the electrode layer body 20 is 2.

[0139] In some embodiments, continuing to refer to FIG5, the electrode layer body 20 has a first axis of symmetry X1 parallel to the length direction of the electrode layer body 20 and a second axis of symmetry X2 parallel to the width direction of the electrode layer body 20; the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 are all symmetrically arranged with respect to the first axis of symmetry X1 or the second axis of symmetry X2. This avoids voltage drop due to excessive impedance during voltage signal transmission, which is beneficial for the synchronous transmission of the same signal from opposite sides of the light-emitting panel 1000, helps to reduce the impact of voltage drop, and thus helps to improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0140] In some embodiments, referring to FIG15, the lines connecting the centers O1 of the first connecting portions L1 located on opposite sides of the electrode layer body 20, the lines connecting the centers O2 of the second connecting portions L2 located on opposite sides of the electrode layer body 20, and the lines connecting the centers O3 of the third connecting portions L3 located on opposite sides of the electrode layer body 20 all pass through the center O of the electrode layer body 20. This is beneficial to improving the uniformity of the light emission brightness of the light-emitting panel 1000.

[0141] In some embodiments, the electrode layer body 20 is a regular N-gon, where N is an even number and N is greater than or equal to 4; a connecting portion is provided on one side of each side of the electrode layer body 20; the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body 20. This facilitates the synchronous transmission of the same voltage signal from opposite sides of the light-emitting panel 1000, helps reduce the impact of voltage drop, and thus helps improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0142] For example, referring to FIG5, the electrode layer body 20 is rectangular in shape. The first connecting portion L1, the second connecting portion L2 and the third connecting portion L3 are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body 20.

[0143] For example, referring to FIG16, the electrode layer body 20 is hexagonal in shape. The first connecting portion L1, the second connecting portion L2 and the third connecting portion L3 are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body 20.

[0144] For example, referring to FIG17, the electrode layer body 20 is circular in shape. The first connecting portion L1, the second connecting portion L2 and the third connecting portion L3 are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body 20.

[0145] For example, referring to FIG18, the electrode layer body 20 is annular. The first connecting portion L1, the second connecting portion L2 and the third connecting portion L3 are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body 20.

[0146] For example, referring to FIG19, the electrode layer body 20 is a regular octagon. The first connecting portion L1, the second connecting portion L2 and the third connecting portion L3 are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body 20.

[0147] In some embodiments, the electrode layer body 20 is circular or annular in shape; an even number of first connecting portions L1, an even number of second connecting portions L2, and an even number of third connecting portions L3 are provided on the outer side of the circular or annular boundary; the first connecting portions L1, second connecting portions L2, and third connecting portions L3 are all symmetrically arranged with respect to an axis of symmetry of the electrode layer body 20. This facilitates the synchronous transmission of the same voltage signal from opposite sides of the light-emitting panel 1000, helps reduce the impact of voltage drop, and thus helps improve the uniformity of the light emission brightness of the light-emitting panel 1000.

[0148] For example, referring to FIG17, the electrode layer body 20 is circular in shape; two first connecting parts L1, two second connecting parts L2 and two third connecting parts L3 are provided on the outer side of the circular boundary; the first connecting parts L1, the second connecting parts L2 and the third connecting parts L3 are all symmetrically arranged with respect to one axis of symmetry Z of the electrode layer body 20.

[0149] For example, referring to FIG18, the electrode layer body 20 is annular in shape; two first connecting portions L1, two second connecting portions L2 and two third connecting portions L3 are provided on the outer side of the outer boundary of the annulus; the first connecting portions L1, the second connecting portions L2 and the third connecting portions L3 are all symmetrically arranged with respect to a symmetry axis Z of the electrode layer body 20.

[0150] In some embodiments, the electrode layer body 20 is annular in shape; at least two of the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 are provided on the outer side of the outer boundary of the electrode layer body 20; at least one of the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 is provided on the inner side of the inner boundary of the electrode layer body 20; and the first connecting portion L1, the second connecting portion L2, and the third connecting portion L3 located on the outer or inner boundary are all symmetrically arranged with respect to an axis of symmetry of the electrode layer body 20.

[0151] For example, referring to FIG20, the electrode layer body 20 is annular in shape; a first connecting portion L1 and a third connecting portion L3 are provided on the outer side of the outer boundary of the electrode layer body 20; a second connecting portion L2 is provided on the inner side of the inner boundary of the electrode layer body 20; and the first connecting portion L1 and the third connecting portion L3 located on the outer boundary or the inner boundary are symmetrically arranged with respect to a symmetry axis Z of the electrode layer body 20.

[0152] For example, referring to FIG21, the electrode layer body 20 is annular in shape; a first connecting portion L1, a second connecting portion L2 and a third connecting portion L3 are provided on the outer side of the outer boundary of the electrode layer body 20; a first connecting portion L1, a second connecting portion L2 and a third connecting portion L3 are provided on the inner side of the inner boundary of the electrode layer body 20; and the first connecting portion L1, the second connecting portion L2 and the third connecting portion L3 located on the outer boundary or the inner boundary are symmetrically arranged with respect to a symmetry axis Z of the electrode layer body 20.

[0153] In some embodiments, referring to FIG21, along the radial direction of the electrode layer body 20, the first connecting portion L1 located at the outer boundary overlaps with the first connecting portion L1 located at the inner boundary; the second connecting portion L2 located at the outer boundary overlaps with the second connecting portion L2 located at the inner boundary; and the third connecting portion L3 located at the outer boundary overlaps with the third connecting portion L3 located at the inner boundary.

[0154] In some embodiments, referring to FIG22, along the radial direction of the electrode layer body 20, the first connecting portion L1 located at the outer boundary overlaps with the second connecting portion L2 and the third connecting portion L3 located at the inner boundary; the second connecting portion L2 located at the outer boundary overlaps with the first connecting portion L1 and the third connecting portion L3 located at the inner boundary; and the third connecting portion L3 located at the outer boundary overlaps with the first connecting portion L1 and the second connecting portion L2 located at the inner boundary.

[0155] Referring to Figures 10, 11, 12, and 13, when the light-emitting panel 1000 includes a substrate 100, a first electrode layer 201, a first light-emitting layer EL1, a second electrode layer 202, a second light-emitting layer EL2, a third electrode layer 203, a third light-emitting layer EL3, and a fourth electrode layer 204, the number of fourth connection portions L4 overlapping with the fourth electrode layer 204 is at least two, and the fourth connection portions L4 are not adjacent to each other along the circumferential direction of the electrode layer body 20. In this way, on the one hand, there are at least two connection ends between the fourth electrode layer 204 and the external power supply, thereby improving the reliability of the electrical connection between the fourth electrode layer 204 and the external power supply. Furthermore, the light-emitting panel 1000 can achieve both adjustable color temperature and high connection reliability. On the other hand, since the fourth connection portions L4 are not adjacent to each other along the circumferential direction of the electrode layer body 20, the uniformity of the light emission brightness of the light-emitting panel 1000 can be improved.

[0156] The embodiments of this disclosure also provide a light-emitting device M. Referring to FIG23, 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 plurality of connection portions L of the light-emitting panel 1000. For example, when the light-emitting panel 1000 includes a substrate, a first electrode layer, a first light-emitting layer, a second electrode layer, a second light-emitting layer and a third electrode layer, the controller Q is connected to the first connection portion L1, the second connection portion L2 and the third connection portion L3, thereby realizing signal transmission between the controller Q and the electrode layer body 20, the second electrode layer 202 and the third electrode layer 203.

[0157] When the light-emitting panel 1000 also includes a third connecting part L3 and a fourth electrode layer 204, referring to FIG24, the controller Q is also connected to the fourth connecting part L4, thereby realizing signal transmission between the controller Q and the fourth electrode layer 204.

[0158] 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.

[0159] In some embodiments, the controller Q may include a flexible printed circuit (FPC), wherein the first connection part L1, the second connection part L2, the third connection part L3 and the fourth connection part L4 are all connected to the flexible printed circuit, and the flexible printed circuit provides signals to the first connection part L1, the second connection part L2, the third connection part L3 and the fourth connection part L4 respectively to control the light-emitting panel 1000 to emit light.

[0160] 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; A first electrode layer is disposed on one side of the substrate. The first electrode layer includes an electrode layer body and a plurality of connecting portions disposed around the electrode layer body. The plurality of connecting portions includes a first connecting portion, a second connecting portion, and a third connecting portion. The first connecting portion, the second connecting portion, and the third connecting portion are spaced apart from each other. The electrode layer body is connected to the first connecting portion. The second connecting portion and the third connecting portion are both spaced apart from the electrode layer body. The number of at least one of the first connecting portion, the second connecting portion, and the third connecting portion is at least two. A first light-emitting layer, a second electrode layer, a second light-emitting layer, and a third electrode layer are sequentially stacked on the side of the first electrode layer away from the substrate, along a direction away from the substrate. The electrode layer body, the first light-emitting layer, the second electrode layer, the second light-emitting layer, and the third electrode layer overlap each other. The second electrode layer overlaps with the second connecting portion, and the third electrode layer overlaps with the third connecting portion.

2. The light-emitting panel according to claim 1, wherein, The number of the first connection portions is at least two, and along the circumference of the electrode layer body, at least two of the first connection portions are not adjacent, and / or; The number of the second connection portions is at least two, and along the circumference of the electrode layer body, at least two of the second connection portions are not adjacent, and / or; The number of the third connection portions is at least two, and at least two of the third connection portions are not adjacent along the circumference of the electrode layer body.

3. The light-emitting panel according to claim 1 or 2, wherein, The first electrode layer includes at least one pair of first connections, wherein the two first connections in each pair are disposed on opposite sides of the electrode layer body; and / or, The first electrode layer includes at least one pair of second connection portions, wherein each pair of second connection portions includes two second connection portions disposed on opposite sides of the electrode layer body; and / or, The first electrode layer includes at least one third connection pair, and each third connection pair includes two third connection portions disposed on opposite sides of the electrode layer body.

4. The light-emitting panel according to claim 3, wherein, The line connecting the centers of the two first connecting portions passes through the center of the electrode layer body; and / or, The line connecting the centers of the two second connecting portions passes through the center of the electrode layer body; and / or, The line connecting the centers of the two third connecting portions passes through the center of the electrode layer body.

5. The light-emitting panel according to claim 3, wherein, The electrode layer body is an axisymmetric pattern, and the axisymmetric pattern has at least two axes of symmetry. The first connection portion is symmetrical about one axis of symmetry of the two included first connection portions with respect to the electrode layer body; and / or, The second connection portion is symmetrical about one axis of symmetry of the two included second connection portions with respect to the electrode layer body; and / or, The third connection portion is symmetrical about one axis of symmetry of the electrode layer body with respect to the two included third connection portions.

6. The light-emitting panel according to any one of claims 1 to 5, wherein, The number of the first connecting portion, the second connecting portion, and the third connecting portion is at least two, and the first connecting portion, the second connecting portion, and the third connecting portion are arranged periodically along the circumference of the electrode layer body.

7. The light-emitting panel according to any one of claims 1 to 6, wherein, The electrode layer body, the first connecting portion, the second connecting portion, and the third connecting portion are made of the same material; In the electrode layer body, the second electrode layer, and the third electrode layer, among any two with unequal sheet resistances, the area of ​​the connection portion connected to the electrode layer with the relatively larger sheet resistance is greater than the area of ​​the connection portion connected to the electrode layer with the smaller sheet resistance.

8. The light-emitting panel according to claim 7, wherein, The sheet resistance of the electrode layer body is greater than that of the second electrode layer, and the area of ​​the first connection portion is greater than the area of ​​the second connection portion; and / or, The sheet resistance of the electrode layer body is greater than that of the third electrode layer, and the area of ​​the first connection portion is greater than the area of ​​the third connection portion; and / or, The sheet resistance of the second electrode layer is greater than that of the third electrode layer, and the area of ​​the second connection portion is greater than that of the third connection portion.

9. The light-emitting panel according to any one of claims 1 to 8, wherein, The edges of the electrode layer body and the connecting portion are parallel to each other.

10. The light-emitting panel according to claim 9, wherein, The electrode layer body is rectangular in shape; At least two of the first connecting portion, the second connecting portion, and the third connecting portion are provided on one side of each long side of the electrode layer body; The electrode layer body has at least one of the first connecting portion, the second connecting portion, and the third connecting portion on one side of each short side; and, The number of connection portions provided on one side of each long side of the electrode layer body is greater than the number of connection portions provided on one side of each short side of the electrode layer body.

11. The light-emitting panel according to claim 10, wherein, The electrode layer body has a first axis of symmetry parallel to the length direction of the electrode layer body and a second axis of symmetry parallel to the width direction of the electrode layer body; The first connecting portion, the second connecting portion, and the third connecting portion are all symmetrically arranged with respect to the first axis of symmetry or the second axis of symmetry.

12. The light-emitting panel according to claim 10, wherein, The lines connecting the centers of the first connecting portions located on opposite sides of the electrode layer body, the lines connecting the centers of the second connecting portions located on opposite sides of the electrode layer body, and the lines connecting the centers of the third connecting portions located on opposite sides of the electrode layer body all pass through the center of the electrode layer body.

13. The light-emitting panel according to any one of claims 1 to 8, wherein, The electrode layer body is a regular N-gon, where N is an even number and N is greater than or equal to 4; A connecting portion is provided on one side of each edge of the electrode layer body; The first connecting portion, the second connecting portion, and the third connecting portion are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body.

14. The light-emitting panel according to any one of claims 1 to 5, wherein, The electrode layer body is circular or annular in shape; An even number of the first connecting parts, an even number of the second connecting parts, and an even number of the third connecting parts are provided on the outer side of the circle's boundary or the outer side of the annulus's outer boundary; The first connecting portion, the second connecting portion, and the third connecting portion are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body.

15. The light-emitting panel according to any one of claims 1 to 5, wherein, The electrode layer body is ring-shaped; At least two of the first connecting portion, the second connecting portion, and the third connecting portion are provided on the outer side of the outer boundary of the electrode layer body; The inner side of the inner boundary of the electrode layer body is provided with at least one of the first connecting portion, the second connecting portion, and the third connecting portion; and, The first connecting portion, the second connecting portion, and the third connecting portion located at the outer boundary or the inner boundary are all symmetrically arranged with respect to one axis of symmetry of the electrode layer body.

16. The light-emitting panel according to claim 15, wherein, Along the radial direction of the electrode layer body, the first connecting portion located at the outer boundary overlaps with the first connecting portion located at the inner boundary; the second connecting portion located at the outer boundary overlaps with the second connecting portion located at the inner boundary; the third connecting portion located at the outer boundary overlaps with the third connecting portion located at the inner boundary; or, Along the radial direction of the electrode layer body, the first connecting portion located at the outer boundary overlaps with the second connecting portion and the third connecting portion located at the inner boundary; the second connecting portion located at the outer boundary overlaps with the first connecting portion and the third connecting portion located at the inner boundary; the third connecting portion located at the outer boundary overlaps with the first connecting portion and the second connecting portion located at the inner boundary.

17. The light-emitting panel according to any one of claims 1 to 16, wherein, The number of connecting parts is m, and the number of electrode layers is n. The relationship between the number of connecting parts and the number of electrode layers satisfies m = kn, where k is an integer greater than or equal to 2.

18. The light-emitting panel according to any one of claims 1 to 17, wherein, The first light-emitting layer and the second light-emitting layer emit light of different colors.

19. The light-emitting panel according to any one of claims 1 to 18, wherein, The first electrode layer further includes a fourth connecting portion disposed around the electrode layer body, wherein the fourth connecting portion is spaced apart from the electrode layer body, the first connecting portion, the second connecting portion and the third connecting portion; The light-emitting panel also includes: A third light-emitting layer and a fourth electrode layer are disposed on the side of the third electrode layer away from the substrate. The third light-emitting layer is closer to the substrate than the fourth electrode layer, and the electrode layer body, the first light-emitting layer, the second electrode layer, the second light-emitting layer, the third electrode layer, the third light-emitting layer and the fourth electrode layer overlap. The fourth electrode layer overlaps with the fourth connecting portion.

20. The light-emitting panel according to claim 19, wherein, The number of the fourth connection portions is at least two, and the fourth connection portions are not adjacent to each other along the circumference of the electrode layer body.

21. A light-emitting device, comprising: The light-emitting panel according to any one of claims 1 to 20; The controller is connected to multiple connection points of the light-emitting panel.

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