Display panel and display device

Abstract

This invention discloses a display panel and a display device. The display panel includes multiple light-emitting units, which are disposed on multiple adjacent virtual hexagons in a honeycomb-like dot matrix arrangement. Each light-emitting unit is located at a vertex of the virtual hexagon. Each light-emitting unit includes a first electrode, a second electrode, and an organic light-emitting portion disposed between the first electrode and the second electrode. The display panel includes at least one auxiliary electrode, which is electrically connected to the second electrode. One auxiliary electrode is correspondingly located at the center of one of the virtual hexagons. By arranging the light-emitting units in a honeycomb-like dot matrix, the display panel can meet the requirements of display resolution and transparent display while providing sufficient space for the formation of the auxiliary electrode. This reduces the precision requirements of the auxiliary electrode formation process and thus lowers the manufacturing cost of the auxiliary electrode.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] As a new display technology, transparent display allows the observer to see the background behind the screen through the display screen. This novel display effect has broadened the application field of the display and has therefore received widespread attention. Both reflective liquid crystal display (LCD) panels and organic light-emitting diode (OLED) display panels can achieve transparent display. Among them, OLED display panels are more widely used in the field of transparent display due to their better transparent display effect.

[0003] OLED display panels can be divided into three types according to the light emission direction: bottom-emitting OLED, top-emitting OLED and double-sided emitting OLED. Among them, the top-emitting OLED has a relatively high aperture ratio and thus achieves a higher transmittance. However, in order to meet the higher transmittance requirements of transparent display, the OLED cathode usually uses a material with a higher transmittance, such as transparent metal oxide conductive materials such as indium zinc oxide and indium tin oxide. This type of material has a high resistance, resulting in a large voltage drop in the cathode voltage signal during transmission, making the voltage distribution at various locations on the cathode uneven, which in turn leads to uneven brightness and high power consumption of the transparent OLED display panel. In existing conventional technical means, an auxiliary electrode is usually connected to the cathode to reduce the voltage drop generated by the cathode voltage signal during transmission. However, in order to meet a certain display resolution, the space between adjacent pixels is small, and the space for setting the auxiliary electrode is limited, resulting in high precision requirements for the auxiliary electrode formation process, which in turn leads to difficulty in making the auxiliary electrode and high production cost. Summary of the invention

[0004] The present invention provides a display panel and a display device. The display panel can provide sufficient space for the arrangement of auxiliary electrodes while meeting the requirements of resolution and transparent display.

[0005] To solve the above problems, in a first aspect, the present invention provides a display panel, the display panel comprising a plurality of light-emitting units, the plurality of light-emitting units being arranged on a plurality of adjacent virtual hexagons and arranged in a honeycomb lattice, each of the light-emitting units being arranged at a vertex position of the virtual hexagon:

[0006] The light-emitting unit includes a first electrode, a second electrode, and an organic light-emitting portion disposed between the first electrode and the second electrode, and the display panel includes at least one auxiliary electrode, and the auxiliary electrode is electrically connected to the second electrode;

[0007] Wherein, one of the auxiliary electrodes is correspondingly arranged at the center position of one of the virtual hexagons.

[0008] In a display panel provided by an embodiment of the present invention, the plurality of virtual hexagons include a plurality of first virtual hexagons and a plurality of second virtual hexagons, an auxiliary electrode is correspondingly arranged at the center position of a first virtual hexagon, and six adjacent second virtual hexagons are arranged in sequence around a first virtual hexagon.

[0009] In a display panel provided in an embodiment of the present invention, the display panel includes a cathode layer, the cathode layer includes each second electrode connected to each other, and the cathode layer includes a plurality of first openings penetrating the cathode layer, and a first opening is correspondingly arranged at the center position of a second virtual hexagon.

[0010] In a display panel provided by an embodiment of the present invention, the cathode layer further includes a plurality of second openings penetrating the cathode layer, a second opening is correspondingly arranged at a center position of a first virtual hexagon, and the second opening is covered by the corresponding auxiliary electrode.

[0011] In a display panel provided by an embodiment of the present invention, the material of the auxiliary electrode includes an ionic liquid polymer.

[0012] In a display panel provided by an embodiment of the present invention, the virtual hexagon is a regular hexagon, and the shape of the orthographic projection of the auxiliary electrode on the display panel is a circle.

[0013] In a display panel provided by an embodiment of the present invention, the display panel further includes at least one auxiliary electrode wiring, and the auxiliary electrode wiring is electrically connected to at least one auxiliary electrode.

[0014] In a display panel provided by an embodiment of the present invention, the display panel includes an anode layer, and the anode layer includes the first electrodes and the auxiliary electrode wiring.

[0015] In a display panel provided by an embodiment of the present invention, the display panel includes a thin film transistor layer arranged on a side of the first electrode away from the organic light-emitting portion, the thin film transistor layer includes a first metal layer, and the first metal layer includes the auxiliary electrode wiring.

[0016] In a second aspect, the present invention provides a display device, comprising the above-mentioned display panel.

[0017] Beneficial effect: The present invention provides a display panel and a display device, in which the light-emitting units are arranged in a honeycomb dot matrix at the vertex positions of the virtual hexagon. On the one hand, this arrangement makes any two adjacent light-emitting units have a smaller spacing, thereby meeting certain display resolution requirements. On the other hand, since each light-emitting unit is arranged at the vertex position of the virtual hexagon, the middle area of ​​the virtual hexagon has a larger area to form a transparent area, so that the display panel can achieve transparent display. At the same time, the middle area of ​​the virtual hexagon can also provide sufficient space to form an auxiliary electrode electrically connected to the second electrode, thereby reducing the precision requirement of the auxiliary electrode formation process, thereby reducing the production cost of the auxiliary electrode. That is, the display panel arranges the light-emitting units in the above-mentioned honeycomb dot matrix, so that the display panel can provide sufficient space for the setting of the auxiliary electrode while meeting the display resolution and transparent display requirements, thereby reducing the precision requirement of the auxiliary electrode formation process, thereby reducing the production cost of the auxiliary electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a schematic diagram of a planar structure of a first display panel provided by an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure of a display panel at position BB' is provided;

[0021] Figure 3 is a schematic diagram of a planar structure of a second display panel provided by an embodiment of the present invention;

[0022] Figure 4 yes Figure 3 A schematic diagram of a cross-sectional structure of a display panel at position CC' is provided;

[0023] Figure 5 is a schematic diagram of a planar structure of a third display panel provided by an embodiment of the present invention;

[0024] Figure 6 yes Figure 5 A schematic diagram of a cross-sectional structure of a display panel at position DD' is provided;

[0025] Figure 7yes Figure 1 Another schematic diagram of a cross-sectional structure of a display panel at position BB' is provided;

[0026] Figure 8 is a schematic diagram of a pixel arrangement structure of a display panel provided by an embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of another pixel arrangement structure of a display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the invention can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0031] An embodiment of the present invention provides a display panel, which is combined with Figure 1 and Figure 2 For detailed explanation:

[0032] See also Figure 1 , the display panel includes a plurality of light-emitting units A arranged at intervals, the plurality of light-emitting units A are arranged on a plurality of adjacent virtual hexagons H and are arranged in a honeycomb lattice, and each of the light-emitting units A is arranged at a vertex position of the virtual hexagon H;

[0033] See also Figure 2 The light-emitting unit A includes a first electrode 110, a second electrode 310, and an organic light-emitting portion 210 arranged between the first electrode 110 and the second electrode 310, and the display panel includes at least one auxiliary electrode 400, and the auxiliary electrode 400 is electrically connected to the second electrode 310, wherein one of the auxiliary electrodes 400 is correspondingly arranged at the center position of one of the virtual hexagons H.

[0034] In this embodiment, the light-emitting units A are arranged in a honeycomb dot matrix at the vertices of the virtual hexagon H. On the one hand, this arrangement allows any two adjacent light-emitting units A to have a smaller spacing, thereby meeting certain display resolution requirements. On the other hand, since the light-emitting units A are arranged at the vertices of the virtual hexagon H, the middle area of ​​the virtual hexagon H has a larger area to form a transparent area, so that the display panel can achieve transparent display. At the same time, the middle area of ​​the virtual hexagon H can also provide sufficient space for forming an auxiliary electrode 400 electrically connected to the second electrode, thereby reducing the precision requirements for the formation process of the auxiliary electrode 400, thereby reducing the difficulty and cost of making the auxiliary electrode 400. That is, the display panel arranges the light-emitting units A in the above-mentioned honeycomb dot matrix, so that the display panel can provide sufficient space for the formation of the auxiliary electrode while meeting the display resolution and transparent display requirements, thereby reducing the precision requirements for the formation process of the auxiliary electrode 400, thereby reducing the manufacturing cost of the auxiliary electrode 400.

[0035] It is additionally noted that the second electrodes 310 of the display units A are interconnected to form a cathode layer 300, and the cathode layer 300 is usually formed of a conductive material with high transmittance, such as a transparent metal oxide commonly used in the art, so that the interval area between adjacent light-emitting units has a higher transmittance, so as to meet the requirements of transparent display on the overall transmittance of the display panel;

[0036] The organic light-emitting parts 210 of each of the display units A are connected to each other to form an organic light-emitting layer 200, and the organic light-emitting layer 200 generally includes a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer, etc., which are stacked in sequence, wherein the light-emitting material layer is only arranged in the corresponding area of ​​each of the light-emitting units A, and other film layers except the light-emitting material layer are generally arranged in the entire surface of the display panel;

[0037] The first electrodes 110 of each of the display units A are spaced apart from each other to form an anode layer 100;

[0038] A thin film transistor layer 700 is usually provided on the side of each light emitting unit A away from the light emitting surface, including a plurality of thin film transistors and related signal wirings provided corresponding to each light emitting unit, for independently driving each light emitting unit A to emit light and thus realize display;

[0039] A pixel definition layer 600 is usually also disposed on the thin film transistor layer 700, and a plurality of first grooves 610 corresponding to the plurality of light-emitting units A and a second groove 620 corresponding to at least one auxiliary electrode 400 are disposed on the pixel definition layer 600. The pixel unit A is correspondingly disposed in the first groove 610, and the auxiliary electrode is correspondingly disposed in the second groove 620.

[0040] In some embodiments, in order to avoid reducing the transparent display effect of the display panel due to the setting of the auxiliary electrode 400 affecting the overall transmittance of the display panel, the auxiliary electrode 400 is formed of a transparent conductive material. Exemplarily, the material of the auxiliary electrode 400 includes an ionic liquid polymer, such as a pyridine-based particle liquid polymer and an imidazole-based ionic liquid polymer;

[0041] Furthermore, the auxiliary electrode 400 composed of such an ionic liquid polymer can be formed by an inkjet printing process. Specifically, ink is printed into the inkjet printing second groove 620 to form a liquid film layer, and then the liquid film layer is solidified through a curing process to form the auxiliary electrode. The printing ink generally includes an ionic liquid monomer, a solvent and other necessary components. A polymerizable group is provided in the ionic liquid monomer. The ionic liquid monomer undergoes a polymerization reaction under certain conditions to form the ionic liquid polymer, and the curing is completed to form the auxiliary electrode. In addition, the solvent can be selected from ether solvents.

[0042] In some embodiments, the auxiliary electrode 400 has a thickness of 0.5 to 1.2 microns, and the specific thickness is determined according to actual process requirements.

[0043] In some embodiments, see Figure 1The plurality of virtual hexagons H include a plurality of first virtual hexagons H1 and a plurality of second virtual hexagons H2, one auxiliary electrode 400 is correspondingly arranged at the center position of one of the first virtual hexagons H1, and six adjacent second virtual hexagons H2 are arranged around one of the first virtual hexagons H1, that is, each of the auxiliary electrodes 400 is evenly arranged in part of the virtual hexagons, while improving the uneven display brightness caused by the cathode voltage drop, avoiding the decrease in the overall transmittance of the display panel caused by the arrangement of too many auxiliary electrodes;

[0044] It is understandable that, according to actual process requirements, the first virtual hexagon H1 and the second virtual hexagon H2 may be arranged in other ways to balance the requirements between the cathode voltage drop improvement and the transparent display effect of the display panel.

[0045] In some embodiments, see Figure 3 and Figure 4 The cathode layer 300 includes a plurality of first openings 321 penetrating the cathode layer 300, and each of the first openings 321 is correspondingly arranged at the center of the second virtual hexagon H2. By designing the cathode layer 300 as an opening in the second virtual hexagon H2, the transmittance of the corresponding area in the second virtual hexagon H2 is improved, thereby improving the overall transmittance of the display panel, and thus making the display panel have a better transparent display effect;

[0046] Furthermore, although the auxiliary electrode 400 is not set in the second virtual hexagon H2, the pixel definition layer 600 can also set the second groove 620 in the second virtual hexagon H2 to further reduce the film layer set in the corresponding area in the second virtual hexagon H2 to further improve the transparent display effect of the display panel.

[0047] In some embodiments, see Figure 5 and Figure 6 The cathode layer 300 further includes a plurality of second openings 322 penetrating the cathode layer 300, and each of the second openings 322 is correspondingly arranged at the center position of the first virtual hexagon H1, that is, the cathode layer 300 is also provided with an opening structure inside the first virtual hexagon H1 where the auxiliary electrode 400 is arranged, that is, the transmittance of the corresponding area in the first virtual hexagon H1 is further improved, thereby improving the overall transmittance of the display panel, and further making the display panel have a better transparent display effect. At the same time, the size of the second opening 322 is slightly smaller than that of the auxiliary electrode 400, so that the second opening 322 of the cathode layer 300 is completely covered by the corresponding auxiliary electrode 400, so as to ensure that the auxiliary electrode and the cathode layer are stably electrically connected.

[0048] In some embodiments, each of the virtual hexagons H is a regular hexagon, and correspondingly, the shape of the positive projection of the auxiliary electrode 400 on the anode layer 100 of the display panel is circular, and the circular auxiliary electrode 400 can be set as large as possible without interfering with the adjacent light-emitting unit A, that is, the circular auxiliary electrode 400 can be inscribed in the corresponding virtual hexagon H as much as possible. Then, under the premise that the side length of the virtual hexagon H is constant, that is, the distance between two adjacent light-emitting units is constant, the size of the auxiliary electrode 400 is as large as possible, which reduces the difficulty of preparing the auxiliary electrode 400 and reduces the manufacturing cost.

[0049] Similarly, when each of the virtual hexagons H is a regular hexagon, the first opening 321 and the second opening 322 in the cathode layer 300 can be set as circular openings, and the first opening 321 and the second opening 322 can be set as large as possible, so that the display panel has a better transparent display effect.

[0050] It should be supplemented that, in the aforementioned embodiment, by electrically connecting the auxiliary electrode 400 on the cathode layer 300, that is, the cathode layer 300 and the auxiliary electrode 400 connected in parallel can be used as an actual cathode layer with lower resistance, so that the voltage drop generated when the cathode voltage signal is transmitted on the cathode layer 300 is smaller.

[0051] Further, in some embodiments, see Figure 7 When the auxiliary electrode 400 is arranged in a certain manner, in order to further improve the problem of uneven display brightness caused by the voltage drop of the cathode layer, the display panel also includes at least one auxiliary electrode wiring 500, and the auxiliary electrode wiring 500 is electrically connected to at least one auxiliary electrode 400. One end of the auxiliary electrode wiring 500 is connected to the cathode voltage signal generating module, and the cathode voltage signal can be directly transmitted to the corresponding position in the surface of the cathode layer 300 through the connected auxiliary electrode 400, thereby avoiding the voltage drop generated when the cathode voltage signal is transmitted in the surface of the cathode layer 300.

[0052] In some embodiments, one auxiliary electrode line 500 is generally electrically connected to a plurality of auxiliary electrodes 400 arranged along the extension direction of the auxiliary electrode line 500, that is, a cathode voltage signal is transmitted to the cathode layer through a plurality of auxiliary electrodes 400 simultaneously through one auxiliary electrode line 500.

[0053] In some embodiments, the auxiliary electrode wiring 500 and the conventional film layer in the panel are formed simultaneously by one process, and while the cathode voltage drop is improved by providing the auxiliary electrode wiring 500, the preparation process of the display panel will not be increased;

[0054] Exemplarily, the auxiliary electrode wiring 500 may be formed in the same layer as the first electrode 110, that is, the anode layer 100 includes the first electrodes 110 and the auxiliary electrode wiring 500;

[0055] In addition, the auxiliary electrode wiring 500 can be formed in the same layer as any metal layer in the thin film transistor layer 700, that is, the thin film transistor layer 700 includes a first metal layer, and the first metal layer includes the auxiliary electrode wiring 500. Specifically, the first metal layer can be a gate metal layer or a source and drain metal layer conventionally set in the thin film transistor layer 700.

[0056] In some embodiments, since there is an organic light-emitting layer 200 between the auxiliary electrode 400 and the auxiliary electrode wiring 500, in order to effectively electrically connect the auxiliary electrode wiring 500 to the auxiliary electrode 400, the auxiliary electrode wiring 500 can be designed to have a specific shape so that the upper organic light-emitting layer 200 has a fault, so that the auxiliary electrode wiring 500 is connected to the auxiliary electrode 400 in the fault area. For example, please continue to refer to Figure 7 The auxiliary electrode wiring 500 is an undercut structure, the width of the upper layer is wider than that of the lower layer, and since the thickness of the organic light-emitting layer 200 is relatively thin, it cannot completely cover the auxiliary electrode wiring 500, so that the auxiliary electrode 400 and the auxiliary electrode wiring 500 can be electrically connected. Furthermore, when the auxiliary electrode 400 is formed by an inkjet printing process, due to the fluidity of the printing ink, the printed ink can fully cover the recessed part of the undercut structure of the auxiliary electrode wiring 500, thereby enabling the auxiliary electrode 400 formed after curing to be fully electrically connected to the auxiliary electrode wiring 500.

[0057] In some embodiments, to achieve color display, the plurality of light emitting units A include a plurality of first light emitting units A1, a plurality of second light emitting units A2, and a plurality of third light emitting units A3, and are divided into a plurality of columns of light emitting units arranged along the first direction X, specifically including the following:

[0058] A light emitting unit column consisting of a plurality of first light emitting units A1 arranged in a straight line along the second direction Y, a light emitting unit column consisting of a plurality of second light emitting units A2 arranged in a straight line along the second direction Y, a light emitting unit column consisting of a plurality of third light emitting units A3 arranged in a straight line along the second direction Y, and a light emitting unit column consisting of a plurality of second light emitting units A2 arranged in a straight line along the second direction Y, and the aforementioned four light emitting unit columns are repeatedly arranged along the first direction X.

[0059] In some embodiments, signal lines such as data lines and scan lines may be arranged along the sides of a virtual hexagon to achieve independent driving of each of the light-emitting units A. The specific arrangement is not particularly limited in the present invention.

[0060] In some embodiments, since the number of the second light-emitting units A2 is the largest, which is twice that of the first light-emitting units A1 or the third light-emitting units A3, the second light-emitting units A2 can be set as blue light-emitting units with relatively low luminous lifetime, while one of the first light-emitting units A1 and the third light-emitting units A3 is a green light-emitting unit, and the other is a red light-emitting unit. Therefore, by increasing the total area of ​​the blue light-emitting units, a single blue light-emitting unit can meet the red, green and blue mixed light requirements when the brightness is low, thereby extending the luminous lifetime of the blue light-emitting units.

[0061] In some embodiments, further, the areas and shapes of the first light-emitting unit A1, the second light-emitting unit A2 and the third light-emitting unit A3 can be set to balance the light-emitting requirements between light-emitting units of different colors, which is not specifically limited in the present invention.

[0062] In some embodiments, based on the above-mentioned specific arrangement of light-emitting units, a variety of feasible arrangements of pixel units may be designed. Two feasible arrangements are given as examples below:

[0063] For the first arrangement, please refer to Figure 8 , the pixel unit P includes six pixel units located at the vertices of a virtual hexagon H, specifically including one first light-emitting unit A1, three second light-emitting units A2 and two third light-emitting units A3, and two pixel units P adjacent to each other along the first direction X are independent of each other, and two pixel units P adjacent to each other along the second direction Y share one second light-emitting unit A2 and one third light-emitting unit A3;

[0064] For the second layout, please refer to Fig. 9, a pixel unit P includes three pixel units located on three vertices of a virtual hexagon H along the first direction X and three pixel units located on three vertices of a virtual hexagon H adjacent to the first direction X along the opposite direction of the first direction X, specifically including one first light-emitting unit A1, three second light-emitting units A2 and two third light-emitting units A3, and two pixel units P adjacent to each other along the first direction X are independent of each other, and two pixel units P adjacent to each other along the second direction Y share one second light-emitting unit A2 and one third light-emitting unit A3.

[0065] Another embodiment of the present invention further provides a display device, which includes the display panel provided in the above embodiment. The display device can be built into a building window, a car window, a store window, etc., and the present invention is not limited to this.

[0066] An embodiment of the present invention provides a display panel and a display device, in which the light-emitting units are arranged in a honeycomb dot matrix at the vertex positions of the virtual hexagon. On the one hand, this arrangement method allows any two adjacent light-emitting units to have a smaller spacing, thereby meeting certain display resolution requirements. On the other hand, since each light-emitting unit is arranged at the vertex position of the virtual hexagon, the middle area of ​​the virtual hexagon has a larger area to form a transparent area, so that the display panel can achieve transparent display. At the same time, the middle area of ​​the virtual hexagon can also provide sufficient space to form an auxiliary electrode electrically connected to the second electrode, thereby reducing the precision requirements of the auxiliary electrode formation process, thereby reducing the production cost of the auxiliary electrode. That is, the display panel arranges the light-emitting units in the above-mentioned honeycomb dot matrix, so that the display panel can provide sufficient space for the setting of the auxiliary electrode while meeting the display resolution and transparent display requirements, thereby reducing the precision requirements of the auxiliary electrode formation process, thereby reducing the production cost of the auxiliary electrode.

[0067] A display panel and a display device provided by an embodiment of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A display panel, characterized in that: The display panel includes a plurality of light-emitting units, which are arranged on a plurality of adjacent virtual hexagons and in a honeycomb lattice arrangement, and each of the light-emitting units is arranged at a vertex position of the virtual hexagon: The light-emitting unit includes a first electrode, a second electrode, and an organic light-emitting portion disposed between the first electrode and the second electrode, the display panel includes at least one auxiliary electrode, the auxiliary electrode is electrically connected to the second electrode, and one of the auxiliary electrodes is correspondingly disposed at a center position of one of the virtual hexagons; Among them, the display panel also includes a pixel definition layer, which is arranged on the side of the light-emitting unit away from the light-emitting surface, and is provided with a plurality of first grooves corresponding to the plurality of light-emitting units and a second groove corresponding to at least one auxiliary electrode. The pixel unit is correspondingly arranged in the first groove, and the auxiliary electrode is correspondingly arranged in the second groove. The size of the second groove is larger than the size of the first groove, and the area of ​​the auxiliary electrode's orthogonal projection on the pixel definition layer is larger than the area of ​​the light-emitting unit's orthogonal projection on the pixel definition layer.

2. The display panel according to claim 1, characterized in that: The plurality of virtual hexagons include a plurality of first virtual hexagons and a plurality of second virtual hexagons. An auxiliary electrode is correspondingly disposed at the center position of a first virtual hexagon, and six adjacent second virtual hexagons are disposed around a first virtual hexagon.

3. The display panel according to claim 2, characterized in that: The display panel includes a cathode layer, the cathode layer includes the second electrodes connected to each other, and the cathode layer includes a plurality of first openings penetrating the cathode layer, and one of the first openings is correspondingly arranged at the center position of one of the second virtual hexagons.

4. The display panel according to claim 3, characterized in that: The cathode layer further includes a plurality of second openings penetrating the cathode layer, a second opening is correspondingly arranged at a center position of a first virtual hexagon, and the second opening is covered by the corresponding auxiliary electrode.

5. The display panel according to claim 1, characterized in that: The material of the auxiliary electrode includes an ionic liquid polymer.

6. The display panel according to claim 1, characterized in that: The virtual hexagon is a regular hexagon, and the shape of the orthographic projection of the auxiliary electrode on the display panel is a circle.

7. The display panel according to claim 1, characterized in that: The display panel further includes at least one auxiliary electrode wiring, and the auxiliary electrode wiring is electrically connected to at least one auxiliary electrode.

8. The display panel according to claim 7, characterized in that: The display panel includes an anode layer, and the anode layer includes the first electrodes and the auxiliary electrode wiring.

9. The display panel according to claim 7, characterized in that: The display panel includes a thin film transistor layer disposed on a side of the first electrode away from the organic light emitting portion, the thin film transistor layer includes a first metal layer, and the first metal layer includes the auxiliary electrode wiring.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

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