Display panel and display device

Abstract

The application discloses a display panel and a display device, and relates to the technical field of display, aiming at the horizontal leakage and crosstalk problem caused by the connecting layer between different color light emitting elements in the display panel. The application is provided with an opening isolation structure around at least one of the adjacent first color light emitting element and the second color light emitting element, and the opening does not face the other one. The path of the connecting layer between the adjacent different color light emitting elements is prolonged by the isolation structure, the resistance of the connecting layer is increased, and there is no direct straight conductive path between the first color light emitting element and the second color light emitting element, so that the horizontal leakage between the adjacent different color light emitting elements is effectively inhibited, and the crosstalk risk is reduced. Meanwhile, the opening of the isolation structure can ensure the electrical continuity of the cathode around the light emitting element, avoid the excessive voltage drop of the cathode due to the extension of the isolation structure, and ensure the uniformity of the display brightness of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] Organic light-emitting diode (OLED) displays have become the mainstream display technology due to their advantages such as high contrast, wide viewing angle, fast response, and flexibility. However, in OLED displays, there may be a common layer between different color light-emitting elements. This common layer can cause lateral leakage between different color light-emitting elements, which in turn can lead to crosstalk between them, resulting in problems such as color shift, low grayscale brightening, uneven brightness, and image quality degradation. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a display panel and display device to reduce lateral leakage between different color light-emitting elements in the display panel, reduce the risk of crosstalk between different color light-emitting elements, and improve the display effect of the display panel.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] In a first aspect, this application provides a display panel, the display panel comprising:

[0006] Array substrate;

[0007] The light-emitting element layer is located on one side of the array substrate. The light-emitting element layer includes a pixel definition layer. The pixel definition layer has multiple pixel openings. Light-emitting elements are disposed corresponding to the pixel openings. The light-emitting elements include an anode, a first light-emitting layer, a connecting layer, a second light-emitting layer, and a cathode stacked in a direction away from the array substrate. The connecting layers of each light-emitting element are connected.

[0008] The light-emitting element includes a first color light-emitting element and a second color light-emitting element arranged adjacent to each other. The light-emitting element layer also includes an isolation structure, and an isolation structure is disposed around at least one of the first color light-emitting element and the second color light-emitting element.

[0009] The isolation structure has at least one opening; when isolation structures are provided around both the first color light-emitting element and the second color light-emitting element, the openings of the isolation structures around the first color light-emitting element and the second color light-emitting element do not face each other; when an isolation structure is provided around one of the first color light-emitting element and the second color light-emitting element, the openings of the isolation structures around the first color light-emitting element and the second color light-emitting element do not face the other.

[0010] Secondly, this application provides a display device that includes the aforementioned display panel.

[0011] Compared with existing technologies, the above technical solution has the following advantages:

[0012] The display panel and display device provided in this application, in adjacent first and second color light-emitting elements, whether an isolation structure is provided around one of them or both are provided around them, the opening of the isolation structure around one of them does not directly face the other. This is to extend the path of the connection layer between adjacent different color light-emitting elements by utilizing the isolation structure, thereby increasing the resistance of the connection layer. Furthermore, in the adjacent section of the first and second color light-emitting elements, the isolation structure is continuous without openings, and there is no direct straight conductive path between the first and second color light-emitting elements. This effectively suppresses lateral leakage current between adjacent different color light-emitting elements and reduces the risk of crosstalk. At the same time, the opening of the isolation structure can ensure the electrical continuity of the cathode around the light-emitting element, avoid excessive voltage drop of the cathode due to the extension of the isolation structure, and ensure the uniformity of the display brightness of the display panel. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This illustration shows a partial cross-sectional structural diagram of a display panel according to an embodiment of this application;

[0015] Figure 2 A cross-sectional structural diagram of multiple light-emitting elements in a display panel provided in an embodiment of this application;

[0016] Figure 3 This is a schematic diagram illustrating the specific structure of a light-emitting element in a display panel, as provided in an embodiment of this application.

[0017] Figure 4 This is a cross-sectional structural diagram of an isolation structure in a display panel provided in an embodiment of this application;

[0018] Figure 5 This is a cross-sectional structural diagram of an isolation structure in a display panel provided in an embodiment of this application;

[0019] Figure 6 This is a partial top view of a display panel provided in an embodiment of this application;

[0020] Figure 7 A partial top view of another display panel provided in an embodiment of this application;

[0021] Figure 8 A partial top view of another display panel provided in an embodiment of this application;

[0022] Figure 9 A partial top view of another display panel provided in an embodiment of this application;

[0023] Figure 10 A partial top view of another display panel provided in an embodiment of this application;

[0024] Figure 11 A partial top view of another display panel provided in an embodiment of this application;

[0025] Figure 12 A partial top view of another display panel provided in an embodiment of this application;

[0026] Figure 13 A partial top view of another display panel provided in an embodiment of this application;

[0027] Figure 14 A partial top view of another display panel provided in an embodiment of this application;

[0028] Figure 15 A partial top view of another display panel provided in an embodiment of this application;

[0029] Figure 16 A partial top view of another display panel provided in an embodiment of this application;

[0030] Figure 17 A partial top view of another display panel provided in an embodiment of this application;

[0031] Figure 18 A partial top view of another display panel provided in an embodiment of this application;

[0032] Figure 19 A partial top view of another display panel provided in an embodiment of this application;

[0033] Figure 20 This is a top view of a display panel provided in an embodiment of the present application;

[0034] Figure 21 This is a top view of a display device provided in an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] Array substrate 100; light-emitting element layer 200; substrate sub; driving circuit layer 110; pixel circuit 10; thin film transistor Qx; storage capacitor Cst; LTPS thin film transistor Qx1; active region b1; gate g; source electrode s1; drain electrode d1; oxide thin film transistor Qx2; oxide region b2; bottom gate dg; top gate tg; source electrode s2; drain electrode d2; first capacitor plate Cst1; second capacitor plate Cst2; active layer poly; metal layer M1; metal layer MC; metal layer MG; metal layer M2; metal layer M3; oxide layer Oe; pixel definition layer PDL; pixel aperture K1; light-emitting element 20; anode 21; first light-emitting layer 22; connection layer 23; second light-emitting layer 24; cathode 25; metal layer RE; hole injection layer HIL; first hole transport layer HTL1; first hole blocking layer HBL1; first electron transport layer ETL1; P-type charge generation layer PCGL; N-type charge generation layer NCGL; second hole transport layer HTL2; second hole blocking layer HBL2; second electron transport layer ETL2; electron injection layer EIL; first color light-emitting element 201; second color light-emitting element 202; isolation structure T; isolation groove T1; isolation pillar T2; bottom width W1; top width W2; opening K2; third color light-emitting element 203; light-emitting element group 210; second color light-emitting element column 202L; light-emitting element group column 210L; pixel unit 220; first direction Y; second direction X; first side B1; first color light-emitting element column 201L; third color light-emitting element column 203L; third direction R; fourth direction T; second side B2; third side B3; fifth direction P; display area AA; first power supply voltage line PVEE1; planarization layer PLN; display panel 300; display device 400. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0039] Figure 1 This illustration shows a partial cross-sectional structural diagram of a display panel according to an embodiment of this application, as shown below. Figure 1 As shown, the display panel includes an array substrate 100 and a light-emitting element layer 200 located on one side of the array substrate 100. The array substrate 100 includes a substrate sub and a driving circuit layer 110 located on one side of the substrate sub. The driving circuit layer 110 includes a pixel circuit 10, which includes thin-film transistors Qx and storage capacitors Cst. The thin-film transistor Qx can be a low-temperature polycrystalline silicon (LTPS) thin-film transistor Qx1. Specifically, the LTPS thin-film transistor Qx1 includes an active region b1, a gate g, a source electrode s1, and a drain electrode d1. The thin-film transistor Qx can also be an oxide thin-film transistor Qx2. Specifically, the oxide thin-film transistor Qx2 includes an oxide region b2, a bottom gate dg, a top gate tg, a source electrode s2, and a drain electrode d2. The storage capacitor Cst includes a first capacitor plate Cst1 and a second capacitor plate Cst2.

[0040] Furthermore, the driving circuit layer 110 includes an active layer poly located on one side of the substrate sub, a multilayer metal layer located on the side of the active layer poly away from the substrate sub, and an oxide layer Oe. The multilayer metal layer may include metal layer M1, metal layer MC, metal layer MG, metal layer M2, and metal layer M3 arranged in a direction away from the substrate sub. The oxide layer Oe may be located between metal layer MC and metal layer MG. Different metal layers, metal layers and active layers, and metal layers and oxide layers are all isolated by an insulating layer.

[0041] Figure 2 This illustration shows a cross-sectional structural diagram of a plurality of light-emitting elements 20 in a display panel according to an embodiment of this application. Figure 1 and Figure 2As shown, the light-emitting element layer 200 includes a pixel definition layer PDL, which has multiple pixel openings K1. Light-emitting elements 20 are correspondingly disposed at each pixel opening K1. Each light-emitting element 20 includes an anode 21, a first light-emitting layer 22, a connecting layer 23, a second light-emitting layer 24, and a cathode 25, stacked along a direction away from the array substrate 100. The anode 21 is located in the metal layer RE. The pixel circuit 10 is electrically connected to the corresponding light-emitting element 20 to drive the corresponding light-emitting element 20 to emit light and control the brightness of the corresponding light-emitting element 20. Figure 2 As shown, the connection layers 23 of each light-emitting element 20 are connected, that is, the connection layers 23 are common layers.

[0042] Furthermore, Figure 3 This illustration shows a schematic diagram of the specific structure of a light-emitting element 20 in a display panel according to an embodiment of this application. Figure 3 As shown, the light-emitting element 20 may specifically include an anode 21, a hole injection layer HIL, a first hole transport layer HTL1, a first light-emitting layer 22 (EML1), a first hole blocking layer HBL1, a first electron transport layer ETL1, a connecting layer 23, a second hole transport layer HTL2, a second light-emitting layer 24 (EML2), a second hole blocking layer HBL2, a second electron transport layer ETL2, an electron injection layer EIL, and a cathode 25, stacked along the direction away from the array substrate 100. The hole injection layer HIL assists in hole injection, the electron injection layer EIL assists in electron injection, and the first hole transport layer HTL2 assists in electron injection. Hole transport layer HTL1 and hole transport layer HTL2 are used to transport holes, first electron transport layer ETL1 and second electron transport layer ETL2 are used to transport electrons, first hole blocking layer HBL1 and second hole blocking layer HBL2 are used to prevent holes from leaving the light-emitting layer, and first light-emitting layer 22 (EML1) and second light-emitting layer 24 (EML2) are used to emit light (electrons and holes recombine here). Thus, after applying a forward voltage between anode 21 and cathode 25, the light-emitting element 20 is equivalent to two OLED devices connected in series through the connecting layer 23, that is, the light-emitting element 20 is a series-connected OLED device. Furthermore, the connecting layer 23 may include a P-type charge generation layer PCGL and an N-type charge generation layer NCGL. The P-type charge generation layer PCGL can act as the transparent anode of the previous OLED device, and the N-type charge generation layer NCGL can act as the transparent cathode of the next OLED device, thus realizing the carrier injection and transport between the upper and lower OLED devices.

[0043] It is understandable that, compared with traditional single-layer OLED devices, tandem OLED devices (i.e., light-emitting elements 20) have at least the following advantages: First, under the same driving current density, the first light-emitting layer 22 and the second light-emitting layer 24 emit light simultaneously, and the total brightness of the device is the sum of the brightness of each light-emitting layer, thereby achieving significantly improved current efficiency, which is beneficial for achieving high-brightness displays; Second, when achieving the same target brightness, the required current density is only half that of single-layer OLED devices. Therefore, the current stress borne by each light-emitting layer is greatly reduced, which can effectively slow down the electro-aging process of organic materials and significantly extend the working life of the device; Third, the connecting layer 23 can adjust the carrier balance between the first light-emitting layer 22 and the second light-emitting layer 24, reduce non-radiative recombination and exciton quenching, and further improve luminous efficiency and color stability.

[0044] However, in tandem OLED display panels, the connecting layer 23 in different color light-emitting elements is usually formed by whole-surface evaporation, that is, the connecting layer 23 of different color light-emitting elements is a whole-layer interconnection, that is, the connecting layer 23 is a common layer, and the conductivity of the connecting layer 23 (including the P-type charge generation layer PCGL and the N-type charge generation layer NCGL) is good. This may cause lateral leakage between different color light-emitting elements, which in turn causes crosstalk between different color light-emitting elements, resulting in problems such as color shift, low grayscale brightness, uneven brightness and image quality degradation in the display panel.

[0045] In view of this, such as Figure 2 As shown, in the display panel provided in this application embodiment, considering that the light-emitting element 20 includes a first color light-emitting element 201 and a second color light-emitting element 202 arranged adjacently, the light-emitting element layer 200 also includes an isolation structure T, and the isolation structure T is arranged around at least one of the first color light-emitting element 201 and the second color light-emitting element 202.

[0046] Regarding the implementation of the isolation structure T, Figure 4 and Figure 5 The diagram shows a cross-sectional view of the isolation structure T in two display panels provided in embodiments of this application. Optionally, in some embodiments of this application, in conjunction with... Figure 2 and Figure 4 As shown, the isolation structure T includes an isolation groove T1 located in the pixel definition layer (PDL). Specifically, the isolation groove T1 is disposed around the corresponding light-emitting element 20, and the isolation groove T1 at least partially penetrates the pixel definition layer (PDL), that is, the isolation groove T1 can completely penetrate the pixel definition layer (PDL) or partially penetrate the pixel definition layer (PDL).

[0047] In terms of manufacturing process, the isolation trench T1 can be fabricated simultaneously with the pixel definition layer PDL. Specifically, the pixel definition layer PDL can be deposited on the planarization layer PLN of the array substrate 100 first. Then, the patterns of the pixel opening K1 and the isolation trench T1 can be formed by photolithography. Finally, the pixel definition layer PDL can be etched by etching, so that the pixel opening K1 and the isolation trench T1 can be formed simultaneously in the pixel definition layer PDL.

[0048] Understandably, in combination Figure 2 and Figure 4 As shown, since the connection layer 23 (including the P-type charge generation layer PCGL and the N-type charge generation layer NCGL) is formed by a full-surface evaporation process, when the connection layer 23 is deposited on the side of the pixel definition layer PDL away from the array substrate 100, it will be continuously deposited along the sidewall and bottom of the isolation trench T1. This causes the path length of the connection layer 23 between adjacent light-emitting elements 20 (such as the first color light-emitting element 201 and the second color light-emitting element 202) to change from the original straight-line distance to a broken-line distance along the isolation trench T1. As a result, the resistance of the connection layer 23 between adjacent light-emitting elements 20 (such as the first color light-emitting element 201 and the second color light-emitting element 202) increases significantly, thereby effectively suppressing lateral leakage current between adjacent light-emitting elements of different colors and reducing the risk of crosstalk.

[0049] Optionally, in other embodiments of this application, such as Figure 5 As shown, the isolation structure T includes an isolation pillar T2, which is located on the side of the pixel definition layer PDL facing away from the array substrate 100. Specifically, the isolation pillar T2 is disposed around the corresponding light-emitting element 20, and the isolation pillar T2 protrudes from the side of the pixel definition layer PDL facing away from the array substrate 100, for example, the isolation pillar T2 protrudes from the surface of the pixel definition layer PDL facing away from the array substrate 100.

[0050] In terms of manufacturing process, the isolation pillars T2 can be formed after the pixel definition layer (PDL) is fabricated. Specifically, an isolation material layer is deposited on the surface of the fabricated pixel definition layer (PDL) facing away from the array substrate 100. Then, the pattern of the isolation pillars T2 is formed by photolithography, and the excess isolation material is removed by etching, finally forming the isolation pillars T2 protruding from the surface of the pixel definition layer (PDL).

[0051] Similar to the case where the isolation structure T includes an isolation trench T1, when the isolation structure T includes an isolation pillar T2, when the connecting layer 23 (including the P-type charge generation layer PCGL and the N-type charge generation layer NCGL) is deposited across the entire surface, it will be continuously deposited along the sidewall and top of the isolation pillar T2 at the location of the isolation pillar T2. This causes the path length of the connecting layer 23 between adjacent light-emitting elements 20 (such as the first color light-emitting element 201 and the second color light-emitting element 202) to change from the original straight-line distance to a broken-line distance along the isolation pillar T2. As a result, the resistance of the connecting layer 23 between adjacent light-emitting elements 20 (such as the first color light-emitting element 201 and the second color light-emitting element 202) increases significantly, thereby effectively suppressing lateral leakage current between different color light-emitting elements and reducing the risk of crosstalk.

[0052] Optional, such as Figure 5 As shown, the isolation pillar T2 is an inverted trapezoid. Specifically, the shape of the isolation pillar T2 in the cross-section perpendicular to the plane of the array substrate 100 is an inverted trapezoid, that is, the width W1 of the lower base of the isolation pillar T2 near the pixel definition layer PDL is smaller than the width W2 of the upper base of the isolation pillar T2 away from the pixel definition layer PDL.

[0053] Optionally, the material of the isolation pillar T2 can be photoresist or organic insulating material, etc.

[0054] It should be noted that the aforementioned isolation groove T1 and isolation pillar T2 structures can be used individually or in combination. For example, in the same display panel, isolation groove T1 can be set around some light-emitting elements as isolation structure T, and isolation pillar T2 can be set around other light-emitting elements as isolation structure T, depending on the specific situation.

[0055] Figures 6-19 The following are partial top-view structural schematic diagrams of several display panels provided in embodiments of this application, such as... Figures 6-19 As shown, the isolation structure T is arranged around the corresponding light-emitting element 20, and the isolation structure T has at least one opening K2. Combined with... Figure 2As shown, the isolation structure T must have at least one opening K2 because the cathode 25 (also known as PVEE) of the light-emitting element 20 is formed over its entire surface. Understandably, if the isolation structure T were completely enclosed around the light-emitting element 20 without any openings, the cathode 25 (i.e., PVEE) formed by vapor deposition over its entire surface would continuously deposit along the sidewalls and bottom / top of the isolation structure T as it passes through it. This would significantly increase the path length of the cathode 25 (i.e., PVEE) around the light-emitting element 20, leading to a significant increase in the local resistance of the cathode 25 (i.e., PVEE) and a greater voltage drop (IR drop). Consequently, this would result in insufficient driving voltage for the light-emitting element 20, low brightness, and problems such as uneven brightness and dark spots on the display panel. Therefore, the isolation structure T must have at least one opening K2 to ensure the electrical continuity of the cathode 25 (i.e., PVEE) around the light-emitting element 20 and reduce the impact of the voltage drop on the cathode 25 (i.e., PVEE) on the display effect.

[0056] Optionally, the isolation structure T can be provided with an opening K2. When the isolation structure T is provided with an opening K2, the pattern design of the isolation structure T is relatively simple and the etching process is less difficult. However, at this time, the current of the cathode 25 (i.e., PVEE) can only flow in and out through this one opening K2 of the isolation structure T around the light-emitting element 20. In this way, the voltage drop of the cathode 25 (i.e., PVEE) may also be relatively large.

[0057] Optionally, the isolation structure T can also have two or more openings K2. When the isolation structure T has two or more openings K2, the current of the cathode 25 (i.e., PVEE) can be dispersed through the multiple openings K2 of the isolation structure T surrounding the light-emitting element 20, which can effectively reduce the current density of a single opening K2 and reduce the voltage drop of the cathode 25 (i.e., PVEE). However, if the number of openings K2 in the isolation structure T is too large, the light-emitting element 20 may experience lateral leakage current through the multiple openings K2 of the surrounding isolation structure T. That is, the suppression effect on the lateral leakage current of the light-emitting element 20 is significantly reduced, and the crosstalk problem between adjacent light-emitting elements of different colors cannot be effectively solved.

[0058] Therefore, optional, such as Figures 6-19As shown, the isolation structure T can be configured with two openings K2 arranged opposite to each other. In this way, on the one hand, the current of the cathode 25 (i.e., PVEE) can flow into the isolation structure T around the light-emitting element 20 from one of the openings K2 and out from the other opening K2, forming a uniform linear current path. This avoids the current concentration at a single opening K2, significantly reduces the overall voltage drop of the cathode 25 (i.e., PVEE), and improves the brightness uniformity of the display panel. On the other hand, the two openings K2 are arranged on opposite sides of the isolation structure T, which does not excessively cut the continuous isolation section of the isolation structure T. This can largely preserve the path extension effect of the isolation structure T on the connection layer 23, effectively suppressing the lateral leakage current between adjacent light-emitting elements of different colors. Thus, it is possible to simultaneously meet the requirements of reducing the lateral leakage current of the light-emitting element 20 and reducing the voltage drop of the cathode 25 (i.e., PVEE).

[0059] like Figures 6-19 As shown, in the display panel provided in this application embodiment, considering that the light-emitting element 20 includes a first color light-emitting element 201 and a second color light-emitting element 202 arranged adjacently, an isolation structure T is provided around at least one of the first color light-emitting element 201 and the second color light-emitting element 202. That is, an isolation structure T is provided around the first color light-emitting element 201, or an isolation structure T is provided around the second color light-emitting element 202, or an isolation structure T is provided around both the first color light-emitting element 201 and the second color light-emitting element 202, so as to reduce the lateral leakage between the first color light-emitting element 201 and the second color light-emitting element 202, reduce the risk of crosstalk between the first color light-emitting element 201 and the second color light-emitting element 202, and improve the display effect of the display panel.

[0060] It is understandable that the placement of the isolation structure T around the first color light-emitting element 201 and the second color light-emitting element 202, and the placement of the opening K2 of the isolation structure T, are key to simultaneously reducing the lateral leakage current between the first color light-emitting element 201 and the second color light-emitting element 202, and reducing the voltage drop of the cathode (i.e., PVEE). If the opening K2 of the isolation structure T around the first color light-emitting element 201 directly faces the second color light-emitting element 202, or if the opening K2 of the isolation structure T around the second color light-emitting element 202 directly faces the first color light-emitting element 201, then the connection layer 23 between the first color light-emitting element 201 and the second color light-emitting element 202 will form the shortest straight conductive path at the opening K2 of the isolation structure T, causing current to preferentially flow through the opening K2 of the isolation structure T. In this case, the effect of the isolation structure T in extending the path of the connection layer 23 may be lost, and it will be unable to effectively suppress the lateral leakage current between the first color light-emitting element 201 and the second color light-emitting element 202. Crosstalk may still occur between the first color light-emitting element 201 and the second color light-emitting element 202.

[0061] Based on this, one implementation of the display panel provided in this application embodiment is as follows: Figure 6 , Figure 10 , Figures 16-19 As shown, when an isolation structure T is provided around one of the first color light-emitting elements 201 and the second color light-emitting element 202, the opening K2 of the isolation structure T around one of the first color light-emitting elements 201 and the second color light-emitting element 202 does not face the other. For example, as Figure 6 and Figure 10 As shown, in the first color light-emitting element 201 and the second color light-emitting element 202, an isolation structure T is provided only around the second color light-emitting element 202, and the opening K2 of the isolation structure T around the second color light-emitting element 202 does not face the first color light-emitting element 201; for example, as... Figures 16-19 As shown, in the first color light-emitting element 201 and the second color light-emitting element 202, an isolation structure T is provided only around the first color light-emitting element 201, and the opening of the isolation structure T around the first color light-emitting element 201 does not face the second color light-emitting element 202.

[0062] With this configuration, the isolation structure T is a continuous, open-structure section adjacent to the first color light-emitting element 201 and the second color light-emitting element 202. This forces the connection layer 23 between the first color light-emitting element 201 and the second color light-emitting element 202 to extend along the path of the isolation structure T, increasing the resistance of the connection layer 23 between the first color light-emitting element 201 and the second color light-emitting element 202. This effectively suppresses lateral leakage current between adjacent different color light-emitting elements and reduces the risk of crosstalk. At the same time, the opening K2 of the isolation structure T around one of the first color light-emitting element 201 and the second color light-emitting element 202 does not face the other. This ensures that the first color light-emitting element 201 and the second color light-emitting element 202 do not form a direct straight conductive path through the opening K2 of the isolation structure T. This does not weaken the lateral leakage current suppression effect of the isolation structure T, and also ensures the electrical continuity of the cathode 25 (i.e., PVEE) around the light-emitting element 20. This prevents the cathode 25 (i.e., PVEE) from generating excessive voltage drop due to the obstruction of the isolation structure T, thereby ensuring the uniformity of the display panel's brightness.

[0063] This method of setting an isolation structure around only one of the first color light-emitting element 201 and the second color light-emitting element 202 is applicable to situations where the leakage current characteristics of different color light-emitting elements in the display panel differ significantly. For example, when the second color light-emitting element 202 is a blue light-emitting element, because the carrier mobility of the blue light-emitting material is higher than that of the red and green light-emitting materials, and the turn-on voltage of the blue light-emitting element is higher, the leakage current problem of the blue light-emitting element is more prominent than that of the red or green light-emitting elements. That is, the blue light-emitting element is prone to leakage to the red and green light-emitting elements, causing the red and green light-emitting elements to be lit illegally. In this case, setting an isolation structure T only around the blue light-emitting element can meet the crosstalk suppression requirements of the entire display panel.

[0064] In another embodiment of the display panel provided in this application, as follows: Figures 7-9 , Figures 11-15 As shown, when isolation structures T are provided around both the first color light-emitting element 201 and the second color light-emitting element 202, the openings K2 of the isolation structures T around the first color light-emitting element 201 and the second color light-emitting element 202 do not face each other, ensuring that there is no direct linear conductive path between the openings K2 of the isolation structures T around the first color light-emitting element 201 and the second color light-emitting element 202.

[0065] With this configuration, at least one of the isolation structures T around the first color light-emitting element 201 and the second color light-emitting element 202 is a continuous, open structure in the adjacent sections of the first color light-emitting element 201 and the second color light-emitting element 202. The connection layer 23 between the first color light-emitting element 201 and the second color light-emitting element 202 needs to bypass one or even two isolation structures T to flow between the two light-emitting elements. This increases the resistance of the connection layer 23 between the first color light-emitting element 201 and the second color light-emitting element 202, effectively suppressing lateral leakage between adjacent different color light-emitting elements and reducing the risk of crosstalk. Simultaneously, because the isolation structures T around the first color light-emitting element 201... The openings K2 of the isolation structure T and the openings K2 of the isolation structure T around the second color light-emitting element 202 do not face each other, so that the first color light-emitting element 201 and the second color light-emitting element 202 will not form a direct straight conductive path through the openings K2 of the isolation structure T. Even if there is leakage at the opening K2 of one of the isolation structures T, it cannot be directly transmitted to the opening K2 of the other isolation structure T. Thus, the lateral leakage suppression effect of the isolation structure T is not weakened, and the electrical continuity of the cathode 25 (i.e., PVEE) around the light-emitting element 20 is guaranteed. This avoids the cathode 25 (i.e., PVEE) from generating an excessive voltage drop due to the obstruction of the isolation structure T, thereby ensuring the uniformity of the display brightness.

[0066] This method of setting isolation structures T around both the first color light-emitting element 201 and the second color light-emitting element 202 can further provide two isolation structures T between the first color light-emitting element 201 and the second color light-emitting element 202, forming a double leakage current suppression guarantee. This can provide a stronger leakage current suppression effect between the first color light-emitting element 201 and the second color light-emitting element 202, and is applicable to high-resolution display panels, high-brightness display panels, and display products with high requirements for color purity and image quality uniformity.

[0067] It is understood that the core concept of the two embodiments described above is consistent, namely, in the adjacent first color light-emitting element 201 and second color light-emitting element 202, whether an isolation structure T is provided around one of them or both of them are provided around the isolation structure T, the opening K2 of the isolation structure T around one of them is not directly facing the other. In this way, in the adjacent section of the first color light-emitting element 201 and the second color light-emitting element 202, the isolation structure T is continuous without openings, and in the orientation of the opening K2 of the isolation structure T, a direct straight conductive path is not formed between the first color light-emitting element 201 and the second color light-emitting element 202, thereby effectively suppressing lateral leakage current between adjacent different color light-emitting elements and reducing the risk of crosstalk; at the same time, the opening of the isolation structure T can ensure the electrical continuity of the cathode 25 (i.e., PVEE) around the light-emitting element 20, avoid the cathode 25 (i.e., PVEE) from generating excessive voltage drop due to the extension of the isolation structure T, ensure that the light-emitting element 20 can obtain sufficient driving voltage, and ensure the uniformity of the display brightness of the display panel.

[0068] The following examples illustrate the specific placement of the isolation structure T and the setting of the opening K2 of the isolation structure T.

[0069] Optionally, in some embodiments of this application, such as Figures 6-15 As shown, an isolation structure T is provided around the second color light-emitting element 202.

[0070] Based on the isolation structure T arranged around the second color light-emitting element 202, optionally, such as Figure 6 As shown, considering that the light-emitting element 20 may also include a third color light-emitting element 203, and the first color light-emitting element 201, the second color light-emitting element 202 and the third color light-emitting element 203 are arranged adjacent to each other, one embodiment is that no isolation structure T is provided around the first color light-emitting element 201 and the third color light-emitting element 203, but only around the second color light-emitting element 202. In this way, the isolation structure T occupies the least space and has the least impact on the voltage drop of the cathode 25 (i.e., PVEE).

[0071] For example, because the carrier mobility of blue light-emitting materials is higher than that of red and green light-emitting materials, and the turn-on voltage of blue light-emitting elements is higher, the leakage current problem of blue light-emitting elements is more prominent than that of red or green light-emitting elements. That is, blue light-emitting elements are more prone to leakage current to red and green light-emitting elements, causing the red and green light-emitting elements to dim. Therefore, if... Figure 6As shown, the second color light-emitting element 202 can be a blue light-emitting element. An isolation structure T is set only around the blue light-emitting element, which can solve the leakage problem of the most prominent blue light-emitting element in the display panel with a lower process cost, while not affecting the driving characteristics of the red and green light-emitting elements.

[0072] When the isolation structure T is only provided around the second color light-emitting element 202, such as Figure 6 As shown, the opening K2 of the isolation structure T surrounding the second color light-emitting element 202 does not face the first color light-emitting element 201, and the opening K2 of the isolation structure T surrounding the second color light-emitting element 202 does not face the third color light-emitting element 203. With this configuration, the isolation structure T surrounding the second color light-emitting element 202 is a continuous, open-structure structure in the section adjacent to the second color light-emitting element 202 and the first color light-emitting element 201, as well as in the section adjacent to the second color light-emitting element 202 and the third color light-emitting element 203. Furthermore, the orientation of the opening K2 of the isolation structure T surrounding the second color light-emitting element 202 does not correspond to either the first color light-emitting element 201 or the third color light-emitting element 203. This ensures that there are no direct linear conductive paths between the second color light-emitting element 202 and the first color light-emitting element 201, or between the second color light-emitting element 202 and the third color light-emitting element 203. This simultaneously suppresses lateral leakage current between the second color light-emitting element 202 and the first color light-emitting element 201, and between the second color light-emitting element 202 and the third color light-emitting element 203. It also ensures the electrical connectivity of the cathode 25 (i.e., PVEE) around the second color light-emitting element 202, minimizing the impact on the voltage drop of the cathode 25 (i.e., PVEE) and ensuring the uniformity of the display panel's brightness.

[0073] Specifically, such as Figure 6 As shown, multiple second-color light-emitting elements 202 are arranged along the first direction Y to form a second-color light-emitting element column 202L, and multiple columns of second-color light-emitting element columns 202L are arranged along the second direction X. The first direction Y and the second direction X are both parallel to the plane where the array substrate 100 is located, and the first direction Y and the second direction X intersect. Furthermore, along the first direction Y, the first-color light-emitting elements 201 and the second-color light-emitting elements 202 do not overlap, and the third-color light-emitting elements 203 and the second-color light-emitting elements 201 do not overlap. For example, the first-color light-emitting elements 201 and the third-color light-emitting elements 203 constitute a light-emitting element group 210, and the first-color light-emitting elements 201 and the third-color light-emitting elements 203 are alternately arranged along the first direction Y to form a light-emitting element group column 210L. The light-emitting element group column 210L and the second-color light-emitting element column 202L are alternately arranged along the second direction X.

[0074] And, as Figure 6As shown, the light-emitting element layer 200 of the display panel includes multiple pixel units 220. Each pixel unit 220 may include a first color light-emitting element 201, a second color light-emitting element 202, and a third color light-emitting element 203. The first color light-emitting element 201 and the third color light-emitting element 203 may each be a red light-emitting element and a green light-emitting element, respectively. The second color light-emitting element 202 may be a blue light-emitting element. In this case, the display panel adopts a Real RGB pixel design. Each pixel unit consists of three independent sub-pixels: red (R), green (G), and blue (B). Without sharing sub-pixels, the target color can be directly generated by mixing the three primary colors. Therefore, when displaying fine content such as text and lines, the edges are sharp, especially in medium-sized products, resulting in a more delicate display effect. Furthermore, the lack of sub-pixel sharing leads to natural color transitions and eliminates the "screen door effect." Additionally, the red / green light-emitting element and the blue light-emitting element can each be provided with independent data signal lines to receive different data signals, reducing the transitions between different data signals on the data signal lines and lowering power consumption. Furthermore, in Real RGB... In an RGB pixel arrangement, the pixel opening K1 corresponding to the light-emitting element (specifically as follows) Figure 6 The top view shape of the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203 can be circular or elliptical to improve the diffraction phenomenon caused by external ambient light.

[0075] In this pixel arrangement, such as Figure 6 As shown, considering that the second color light-emitting element 202 does not overlap with the first color light-emitting element 201 and the third color light-emitting element 202 in the first direction Y, the isolation structure T surrounding the second color light-emitting element 202 can be configured to have two openings K2 arranged opposite to each other in the first direction Y. This configuration ensures that, on the one hand, the openings K2 of the isolation structure T surrounding the second color light-emitting element 202 do not simultaneously face the first color light-emitting element 201 and the third color light-emitting element 203, and that the sections of the isolation structure T surrounding the second color light-emitting element 202 adjacent to the first color light-emitting element 201 and the third color light-emitting element 203 in the second direction X are continuous without openings. This ensures that there are no direct linear conductive paths between the second color light-emitting element 202 and the first color light-emitting element 201, and between the second color light-emitting element 202 and the third color light-emitting element 203, while suppressing lateral leakage current between the second color light-emitting element 202 and the first color light-emitting element 201, and between the second color light-emitting element 202 and the third color light-emitting element 203, thus reducing the risk of crosstalk. On the other hand, combined with... Figure 20 As shown, Figure 20The diagram shows a top view of a display panel according to an embodiment of this application. As can be seen, the signal line (i.e., the first power supply voltage line PVEE1) of the cathode 25 (i.e., PVEE) is connected to the cathode 25 of the display area AA from the bottom edge and the left and right edges of the display panel. The orientation of the two opposing openings K2 of the isolation structure T around the second color light-emitting element 202 is along the first direction Y, which corresponds to the current flow direction of the first power supply voltage line PVEE1 connected to the cathode 25 of the display area AA from the bottom edge of the display panel. This is beneficial to the uniformity of the current of the cathode 25 in the display area AA and can improve the uniformity of the display brightness of the display panel.

[0076] It is understandable that the top-view shape of the isolation structure T surrounding the second color light-emitting element 202 can match the top-view shape of the pixel opening K1 where the second color light-emitting element 202 is located, for example, as Figure 6 As shown, the top view shape of the pixel opening K1 where the second color light-emitting element 202 is located is circular. Therefore, the top view shape of the isolation structure T around the second color light-emitting element 202 can be circular, elliptical, square, etc.

[0077] Based on the isolation structure T arranged around the second color light-emitting element 202, optionally, such as Figures 7-8 As shown, considering that the light-emitting element 20 may also include a third color light-emitting element 203, the first color light-emitting element 201, the second color light-emitting element 202 and the third color light-emitting element 203 are arranged adjacent to each other, and the light-emitting element layer 200 of the display panel includes a plurality of pixel units 220, each pixel unit 220 including a first color light-emitting element 201, a second color light-emitting element 202 and a third color light-emitting element 203, the first color light-emitting element 201 and the third color light-emitting element 203 in the pixel unit 220 constitute a light-emitting element group 210. In another embodiment, an isolation structure T is provided around the light-emitting element group 210, that is, in a pixel unit 220, an isolation structure T is provided around the second color light-emitting element 202, and an isolation structure T is also provided around the entire light-emitting element group 210 including the first color light-emitting element 201 and the third color light-emitting element 203.

[0078] For example, one of the first color light-emitting element 201 and the third color light-emitting element 203 may be a red light-emitting element and the other may be a green light-emitting element. The second color light-emitting element 202 may be a blue light-emitting element. When the turn-on voltages of the red light-emitting element and the green light-emitting element are close and both are lower than the turn-on voltage of the blue light-emitting element, the blue light-emitting element is prone to leakage to the red light-emitting element and the green light-emitting element, resulting in the red light-emitting element and the green light-emitting element being lit by stealth. Therefore, the red light-emitting element and the green light-emitting element can be used as a light-emitting element group 210. An isolation structure T is provided around the light-emitting element group 210 so that the isolation structure T surrounds both the red light-emitting element and the green light-emitting element. An isolation structure T is provided separately around the blue light-emitting element.

[0079] In this case, such as Figures 7-8 As shown, the opening K2 of the isolation structure T surrounding the light-emitting element group 210 and the opening K2 of the isolation structure T surrounding the second color light-emitting element 202 do not face each other.

[0080] This configuration creates an isolation structure T between the second color light-emitting element 202 and the light-emitting element group 210, forming a path for the double-extended connection layer 23. This forces the connection layer 23 between the second color light-emitting element 202 and the light-emitting element group 210 to bypass the two isolation structures T sequentially to achieve connectivity. This effectively suppresses lateral leakage current between the second color light-emitting element 202 and the light-emitting element group 210, reducing the risk of crosstalk. Simultaneously, the openings K2 of the isolation structures T around the light-emitting element group 210 and the second color light-emitting element 202 do not face each other, preventing the formation of a direct linear conductive path between the openings K2 of the two isolation structures T. This ensures the leakage current suppression effect and does not affect the electrical connectivity of the cathode 25 (i.e., PVEE) around the light-emitting element group 210 and the second color light-emitting element 202. This avoids a large voltage drop in the cathode 25 (i.e., PVEE) due to the obstruction of the isolation structures T, ensuring the uniformity of display brightness.

[0081] It is understandable that, since the light-emitting element group 210 composed of the first color light-emitting element 201 and the third color light-emitting element 203 is treated as a whole and an isolation structure T is set around it, this method is more suitable for situations where the start-up voltages of the first color light-emitting element 201 and the third color light-emitting element 203 are close, that is, the lateral leakage current between the first color light-emitting element 201 and the third color light-emitting element 203 is weak.

[0082] Based on the isolation structure T arranged around the second color light-emitting element 202, optionally, such as Figures 9-15As shown, considering that the light-emitting element 20 may also include a third color light-emitting element 203, and the first color light-emitting element 201, the second color light-emitting element 202 and the third color light-emitting element 203 are arranged adjacent to each other, in another embodiment, an isolation structure T is provided around at least one of the first color light-emitting element 201 and the third color light-emitting element 203; and when the isolation structure T is provided around the first color light-emitting element 201, the opening K2 of the isolation structure T around the first color light-emitting element 201 and the opening K2 of the isolation structure T around the second color light-emitting element 202 do not face each other; when the isolation structure T is provided around the third color light-emitting element 203, the opening K2 of the isolation structure T around the second color light-emitting element 202 and the opening K2 of the isolation structure T around the third color light-emitting element 203 also do not face each other.

[0083] This configuration allows for flexible selection of isolation targets based on the leakage current from the second color light-emitting element 202 to the first color light-emitting element 201 and the third color light-emitting element 203, as well as the leakage current between the first color light-emitting element 201 and the third color light-emitting element 203, achieving targeted isolation protection. Specifically, when isolation structures T are provided around both the first color light-emitting element 201 and the second color light-emitting element 202, such as... Figure 9 As shown, this can effectively suppress lateral leakage between the second color light-emitting element 202 and the first color light-emitting element 201; when isolation structures T are provided around both the second color light-emitting element 202 and the third color light-emitting element 203, such as Figure 10 As shown, this can effectively suppress lateral leakage between the second color light-emitting element 202 and the third color light-emitting element 203; when isolation structures T are provided around the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203, such as Figures 11-15 As shown, this design can simultaneously suppress lateral leakage between the second color light-emitting element 202 and the first color light-emitting element 201, between the second color light-emitting element 202 and the third color light-emitting element 203, and between the first color light-emitting element 201 and the third color light-emitting element 203. Simultaneously, the arrangement of the openings K2 of the isolation structure T around the different color light-emitting elements—neither facing each other nor facing other color light-emitting elements—avoids the formation of direct linear conductive paths between adjacent different color light-emitting elements through the openings K2 of the isolation structure T, ensuring the isolation effect and not affecting the electrical connectivity of the cathode 25 (i.e., PVEE), thus reducing the impact of the voltage drop of the cathode 25 (i.e., PVEE) on the display effect.

[0084] Furthermore, such as Figures 11-15As shown, when isolation structures T are provided around each of the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203, the connecting layer 23 can bypass two isolation structures T between each pair of the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203 to allow flow. The path length of the connecting layer 23 between adjacent different color light-emitting elements is greatly extended, and the lateral resistance is significantly improved. This can suppress lateral leakage current between adjacent different color light-emitting elements to a greater extent and reduce the risk of crosstalk. At the same time, the openings K2 of each isolation structure T do not face adjacent light-emitting elements, which will not weaken the isolation effect and can make the current of the cathode 25 (i.e., PVEE) around each light-emitting element flow smoothly, ensuring the brightness uniformity of the display panel. However, in this method, since isolation structures T are provided around the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203, the space occupied by the isolation structures T is relatively large. Compared with the method of setting the isolation structure T only around the second color light-emitting element 202, or the method of setting the isolation structure T only around the light-emitting element group 210, it will affect the voltage drop of the cathode 25 (i.e., PVEE).

[0085] Based on the fact that isolation structures T are provided around the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203, further, in some embodiments of this application, such as Figures 11-15 As shown, the isolation structures T surrounding the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203 each have two openings K2 arranged opposite to each other to reduce the impact of the increase in the isolation structure T on the voltage drop of the cathode 25 (i.e., PVEE). Furthermore, the relative arrangement direction of the two openings K2 on the isolation structure T surrounding the first color light-emitting element 201 can be the same as the relative arrangement direction of the two openings K2 on the isolation structure T surrounding the third color light-emitting element 203. That is, the openings K2 on the isolation structures T surrounding the first color light-emitting element 201 and the third color light-emitting element 203 are oriented in the same direction. This simplifies the isolation structure design, and the pattern design of the isolation structures T surrounding the first color light-emitting element 201 and the third color light-emitting element 203 can be completed on the same photomask, simplifying the manufacturing process and reducing the complexity of the process.

[0086] For example, when one of the first color light-emitting element 201 and the third color light-emitting element 203 is a red light-emitting element and the other is a green light-emitting element, and the second color light-emitting element 202 is a blue light-emitting element, the turn-on voltages of the red light-emitting element and the green light-emitting element may be relatively close and both are lower than the turn-on voltage of the blue light-emitting element. This causes the blue light-emitting element to leak current more severely into the red light-emitting element and the green light-emitting element, resulting in the red light-emitting element and the green light-emitting element idling. However, the leakage current between the red light-emitting element and the green light-emitting element is relatively weak. In this case, an isolation structure T with two opposing openings K2 can be provided around the red light-emitting element, around the green light-emitting element, and around the blue light-emitting element. The orientation of the two openings K2 of the isolation structure T around the red light-emitting element is the same as the orientation of the two openings K2 of the isolation structure T around the green light-emitting element.

[0087] Based on the fact that the relative orientation of the two openings K2 on the isolation structure T surrounding the first color light-emitting element 201 is the same as the relative orientation of the two openings K2 on the isolation structure T surrounding the third color light-emitting element 203, further optionally, in some embodiments of this application, such as Figures 11-14 As shown, the relative orientation of the two openings K2 on the isolation structure T surrounding the second color light-emitting element 202 is the same as that of the two openings K2 on the isolation structure T surrounding the first color light-emitting element 201. The relative orientations of the two openings K2 on the isolation structure T surrounding the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203 are all the same. In other words, the orientations of the two openings K2 on each isolation structure T are consistent, for example, they are all set along the first direction Y, or they are all set along the second direction X. This can further simplify the isolation structure design, and the pattern design of the isolation structure T surrounding the three color light-emitting elements can be completed on the same photomask, which greatly reduces the difficulty and cost of the process. Furthermore, the consistent orientation of the two openings K2 on each isolation structure T can also make the current of the cathode 25 (i.e., PVEE) form a uniform flow direction in the entire display area AA, making the current distribution more uniform, further reducing the overall voltage drop, and improving the brightness uniformity of the display panel.

[0088] Furthermore, such as Figures 11-14As shown, multiple second-color light-emitting elements 202 are arranged in a second-color light-emitting element column 202L along the first direction Y, and multiple columns of second-color light-emitting elements 202L are arranged along the second direction X; along the first direction Y, the first-color light-emitting elements 201 and the second-color light-emitting elements 202 do not overlap, and the third-color light-emitting elements 203 and the second-color light-emitting elements 202 do not overlap; wherein, optionally, as Figure 11 and Figure 14 As shown, the first color light-emitting element 201 and the third color light-emitting element 203 are alternately arranged along the first direction Y to form a light-emitting element array 210L, and the light-emitting element array 210L and the second color light-emitting element 202 are alternately arranged along the second direction X; another option is, as Figures 12-13 As shown, a plurality of first-color light-emitting elements 201 are arranged along the first direction Y to form a first-color light-emitting element column 201L, a plurality of third-color light-emitting elements 203 are arranged along the first direction Y to form a third-color light-emitting element column 203L, and the light-emitting element group column 210L includes the first-color light-emitting element column 201L and the third-color light-emitting element column 203L, and the first-color light-emitting element column 201L and the third-color light-emitting element column 203L are staggered along the first direction Y, and the light-emitting element group column 210L and the second-color light-emitting element column 202L are alternately arranged along the second direction X.

[0089] Under the above pixel arrangement method, such as Figures 11-13 As shown, each isolation structure T has two openings K2 that are arranged opposite each other along the first direction Y, or, as... Figure 14 As shown, each isolation structure T has two openings K2 arranged opposite each other along the second direction X; combined with Figure 20 As shown, since the signal line (i.e., the first power supply voltage line PVEE1) of the cathode 25 (i.e., PVEE) is connected to the cathode 25 of the display area AA from the bottom edge and the left and right edges of the display panel, when each isolation structure T has two openings K2 arranged opposite to each other along the first direction Y, the orientation of the two opposite openings K2 of each isolation structure T corresponds to the current flow direction of the first power supply voltage line PVEE1 from the bottom edge of the display panel to the cathode 25 of the display area AA; when each isolation structure T has two openings K2 arranged opposite to each other along the second direction X, the orientation of the two opposite openings K2 of each isolation structure T corresponds to the current flow direction of the first power supply voltage line PVEE1 from the left and right edges of the display panel to the cathode 25 of the display area AA; both of these methods are beneficial to the uniformity of the current of the cathode 25 and can improve the uniformity of the display brightness.

[0090] Furthermore, the arrangement of two openings K2 opposite each other along the second direction X in each isolation structure T is more conducive to the smooth flow of current in the cathode 25 than the arrangement of two openings K2 opposite each other along the first direction Y in each isolation structure T, which can further improve the uniformity of display brightness.

[0091] contrast Figure 11 and Figures 12-13 As you can see, Figures 12-13 The pixel arrangement in the image is as follows: multiple first-color light-emitting elements 201 are arranged along the first direction Y to form a first-color light-emitting element column 201L; multiple third-color light-emitting elements 203 are arranged along the first direction Y to form a third-color light-emitting element column 203L; the light-emitting element group column 210L includes the first-color light-emitting element column 201L and the third-color light-emitting element column 203L, and the first-color light-emitting element column 201L and the third-color light-emitting element column 203L are staggered along the first direction Y; the light-emitting element group column 210L and the second-color light-emitting element column 202L are alternately arranged along the second direction X. Compared to... Figure 11 The pixel arrangement in the image, namely the first color light-emitting element 201 and the third color light-emitting element 203 are alternately arranged along the first direction Y to form a light-emitting element group 210L, and the light-emitting element group 210L and the second color light-emitting element group 202L are alternately arranged along the second direction X, can make the distance between the openings K2 of the isolation structure T around the three color light-emitting elements relatively far, which can further improve the leakage current improvement effect.

[0092] Among them, such as Figure 11 As shown, the light-emitting element array 210L and the second-color light-emitting element array 202L are staggered along the first direction Y, so that the opening K2 of the isolation structure T around the second-color light-emitting element 202 is also relatively far from the opening K2 of the isolation structure T around the first-color light-emitting element 201 and the opening K2 of the isolation structure T around the third-color light-emitting element 203, which is beneficial to improving the leakage current reduction effect. Figures 12-13 As shown, any two adjacent columns of light-emitting elements are staggered along the first direction Y, which makes the distance between the openings K2 of the isolation structure T around the three colors of light-emitting elements relatively large, which can further improve the leakage current improvement effect.

[0093] contrast Figure 11 and Figure 14As can be seen, when the pixel arrangement is the same, that is, the first color light-emitting element 201 and the third color light-emitting element 203 are alternately arranged along the first direction Y to form a light-emitting element group 210L, and the light-emitting element group 210L and the second color light-emitting element group 202L are alternately arranged along the second direction X, each isolation structure T is provided with two openings K2 that are arranged opposite each other along the second direction X. Compared with the arrangement of each isolation structure T having two openings K2 that are arranged opposite each other along the first direction Y, the openings K2 of each isolation structure T do not face other color light-emitting elements. In a pixel unit 220 including the first color light-emitting element 201, the second color light-emitting element 202 and the third color light-emitting element 203, the distance between the openings K2 on the isolation structure T around the second color light-emitting element 202 and the openings K2 on the isolation structure T around the adjacent two other color light-emitting elements is consistent. While improving leakage, it can ensure the uniformity of leakage in the display area AA of the display panel, which is beneficial to the uniformity of the display effect.

[0094] Based on the fact that the relative orientation of the two openings K2 on the isolation structure T surrounding the first color light-emitting element 201 is the same as the relative orientation of the two openings K2 on the isolation structure T surrounding the third color light-emitting element 203, another optional provision is made in some embodiments of this application, such as... Figure 15 As shown, the relative orientation of the two openings K2 on the isolation structure T surrounding the second color light-emitting element 202 intersects with the relative orientation of the two openings K2 on the isolation structure T surrounding the first color light-emitting element 201. Therefore, the relative orientation of the two openings K2 on the isolation structure T surrounding the second color light-emitting element 202 also intersects with the relative orientation of the two openings K2 on the isolation structure T surrounding the third color light-emitting element 203.

[0095] This configuration further staggers the orientation of the openings K2 of the isolation structures T around different color light-emitting elements, further preventing the formation of possible DC paths between the openings K2 of the isolation structures T around different color light-emitting elements. Even if there is a weak leakage current at the opening K2 of the isolation structure T around a certain color light-emitting element, it cannot be directly transmitted to the opening K2 of the isolation structure T around other color light-emitting elements, thus further improving the leakage current suppression effect. In addition, the current flow direction of the cathode 25 (i.e., PVEE) in the display area AA can flow along the orientation of the two openings K2, which is beneficial to the uniformity of the current of the cathode 25 and can improve the uniformity of the display brightness.

[0096] Furthermore, considering Figure 15The pixel arrangement shown is such that the first color light-emitting element 201 and the third color light-emitting element 203 are alternately arranged along the first direction Y to form a light-emitting element group 210L, and a plurality of second color light-emitting elements 202 are arranged along the first direction Y to form a second color light-emitting element group 202L. The light-emitting element group 210L and the second color light-emitting element group 202L are alternately arranged along the second direction X. The first direction Y and the second direction X are both parallel to the plane where the array substrate 100 is located, and the first direction Y and the second direction X intersect. At this time, the isolation structure T around the first color light-emitting element 201 can be provided with two openings K2 arranged opposite to each other along the fifth direction P, and the isolation structure T around the second color light-emitting element 202 can be provided with two openings K2 arranged opposite to each other along the first direction Y. The fifth direction P intersects the first direction Y and the second direction X.

[0097] It is understandable that, since the relative orientation of the two openings K2 on the isolation structure T surrounding the first color light-emitting element 201 is the same as the relative orientation of the two openings K2 on the isolation structure T surrounding the third color light-emitting element 203, and the isolation structure T surrounding the first color light-emitting element 201 has two openings K2 that are relatively arranged along the fifth direction P, the isolation structure T surrounding the third color light-emitting element 203 also has two openings K2 that are relatively arranged along the fifth direction P.

[0098] Optional, such as Figure 14 As shown, the first direction Y and the second direction X are perpendicular, the fifth direction P is at an angle of 45° to the first direction Y, and the fifth direction P is at an angle of 45° to the second direction X. That is, the isolation structure T around the first color light-emitting element 201 and the third color light-emitting element 203 has an opening K2 at an angle of 45°, and the isolation structure T around the second color light-emitting element 202 has a vertical opening K2.

[0099] The above configuration further staggers the orientation of the openings K2 of the isolation structures T around different color light-emitting elements, and the openings K2 of the isolation structures T around different color light-emitting elements are relatively far apart, completely avoiding the formation of possible DC paths between the openings K2 of the isolation structures T around different color light-emitting elements, further improving the leakage current suppression effect; and, combined with Figure 20As shown, since the signal line (i.e., the first power supply voltage line PVEE1) of the cathode 25 (i.e., PVEE) is connected to the cathode 25 of the display area AA from the bottom and left and right edges of the display panel, the oblique opening K2 of the isolation structure T around the first color light-emitting element 201 and the third color light-emitting element 203, and the longitudinal opening K2 of the isolation structure T around the second color light-emitting element 202 are adapted to the horizontal and vertical current flow directions of the cathode 25 (i.e., PVEE), which can ensure the smooth flow of the cathode 25 (i.e., PVEE) and improve the uniformity of display brightness.

[0100] It is understandable that when isolation structures T are provided around the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203, such as Figures 11-15 As shown, the top view shape of the isolation structure T surrounding each light-emitting element can match the top view shape of the pixel opening K1 where the corresponding light-emitting element is located. For example, if the top view shape of the pixel opening K1 where the light-emitting element is located is circular, then the top view shape of the isolation structure T surrounding the light-emitting element can also be circular. Figures 11-12 , Figures 14-15 As shown; for example, if the top view shape of the pixel opening where the light-emitting element is located is square, then the top view shape of the isolation structure T around the light-emitting element can also be square, such as... Figure 13 As shown.

[0101] It should also be noted that, as Figure 9 and Figure 10 As shown, when isolation structures T are provided around the first color light-emitting element 201 and the second color light-emitting element 202, or when isolation structures T are provided around the second color light-emitting element 202 and the third color light-emitting element 203, the pixel arrangement and opening K2 can be referenced when isolation structures T are provided around the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203. For example, the first color light-emitting element 201 and the third color light-emitting element 203 are alternately arranged in a light-emitting element group 210L along the first direction Y, and multiple second color light-emitting elements 202 are arranged in a second color light-emitting element column 202L along the first direction Y. The light-emitting element group 210L and the second color light-emitting element column 202L are alternately arranged in the second direction X, and the orientation of the opening K2 of the isolation structure T can be along the first direction Y.

[0102] The foregoing embodiments are mainly described based on the provision of an isolation structure T around the second color light-emitting element 202. Alternatively, in some embodiments of this application, such as... Figures 16-19As shown, the second color light-emitting element 202 may not have an isolation structure around it, but an isolation structure T is provided around the first color light-emitting element 201.

[0103] Regarding the arrangement of the isolation structure T around the first color light-emitting element 201, without providing an isolation structure around the second color light-emitting element 202, in some embodiments of this application, as follows: Figures 16-18 As shown, considering that the light-emitting element 20 may also include a third color light-emitting element 203, the first color light-emitting element 201, the second color light-emitting element 202 and the third color light-emitting element 203 are arranged adjacent to each other, and the light-emitting element layer 200 of the display panel includes a plurality of pixel units 220, each pixel unit 220 including a first color light-emitting element 201, a second color light-emitting element 202 and a third color light-emitting element 203. The first color light-emitting element 201 and the third color light-emitting element 203 in the pixel unit 220 constitute a light-emitting element group 210. An isolation structure T may be provided around the light-emitting element group 210, that is, in a pixel unit 220, no isolation structure T is provided around the second color light-emitting element 202, but an isolation structure T is provided around the entire light-emitting element group 210 including the first color light-emitting element 201 and the third color light-emitting element 203; and the opening K2 of the isolation structure T around the light-emitting element group 210 does not face the second color light-emitting element 202.

[0104] It is understandable that, similar to the case where an isolation structure T is only set around the second color light-emitting element 202, this method can also ensure that there is no direct linear conductive path between the second color light-emitting element 202 and the first color light-emitting element 201, and between the second color light-emitting element 202 and the third color light-emitting element 203. This can simultaneously suppress lateral leakage current between the second color light-emitting element 202 and the first color light-emitting element 201, and between the second color light-emitting element 202 and the third color light-emitting element 203, while ensuring the electrical continuity of the cathode 25 (i.e., PVEE) and having a small impact on the voltage drop of the cathode 25 (i.e., PVEE).

[0105] Furthermore, because this method places the isolation structure T around the light-emitting element group 210 including the first color light-emitting element 201 and the third color light-emitting element 203, it can more effectively suppress the lateral leakage from the second color light-emitting element 202 to the first color light-emitting element 201 and the lateral leakage from the second color light-emitting element 202 to the third color light-emitting element 203, compared to placing the isolation structure T only around the second color light-emitting element 202.

[0106] It is also understandable that, since the light-emitting element group 210 composed of the first color light-emitting element 201 and the third color light-emitting element 203 is set as a whole with an isolation structure T around it, this method is more suitable for situations where the start-up voltages of the first color light-emitting element 201 and the third color light-emitting element 203 are close, that is, the lateral leakage current between the first color light-emitting element 201 and the third color light-emitting element 203 is weak.

[0107] Regardless of whether an isolation structure T is provided around the second color light-emitting element 202, the light-emitting element group 210 composed of the first color light-emitting element 201 and the third color light-emitting element 203 can be treated as a whole and an isolation structure T can be provided around it. Based on this, optionally, in some embodiments of this application, such as... Figures 7-8 , Figures 16-18 As shown, multiple light-emitting element groups 210 are arranged along the first direction Y to form a light-emitting element group column 210L, and multiple second-color light-emitting elements 202 are arranged along the first direction Y to form a second-color light-emitting element column 202L. The light-emitting element group column 210L and the second-color light-emitting element column 202L are arranged alternately along the second direction X. Both the first direction Y and the second direction X are parallel to the plane where the array substrate 100 is located, and the first direction Y and the second direction X intersect. Furthermore, along the first direction Y, the light-emitting element group 210 and the second-color light-emitting element 202 do not overlap. At this time, the display panel adopts a Real RGB pixel design, which can ensure that the display panel has high color purity and image quality performance, as well as low power consumption.

[0108] In this pixel arrangement, such as Figures 7-8 , Figures 16-18 As shown, considering that the light-emitting element group 210 and the second color light-emitting element 202 are staggered and do not overlap in the first direction Y, the isolation structure T surrounding the light-emitting element group 210 can be configured to have two openings K2 arranged opposite to each other in the first direction Y. This configuration ensures that, on the one hand, the openings K2 of the isolation structure T surrounding the light-emitting element group 210 do not face the second color light-emitting element 202, and the section of the isolation structure T surrounding the light-emitting element group 210 adjacent to the second color light-emitting element 202 in the second direction X is a continuous structure without openings. This ensures that there is no direct linear conductive path between the light-emitting element group 210 and the second color light-emitting element 202, suppressing lateral leakage current between the light-emitting element group 210 and the second color light-emitting element 202 and reducing the risk of crosstalk. On the other hand, combined with... Figure 20 As shown, the orientation of the two opposing openings K2 of the isolation structure T surrounding the light-emitting element group 210 is along the first direction Y, which corresponds to the current flow direction of the cathode 25 of the display area AA connected to the first power supply voltage line PVEE1 from the lower edge of the display panel. This is beneficial to the uniformity of the current in the cathode 25 and can improve the uniformity of the display brightness.

[0109] When an isolation structure T is also provided around the second color light-emitting element 202, that is, when an isolation structure T is provided around both the light-emitting element group 210 and the second color light-emitting element 202, such as... Figures 7-8 As shown, the isolation structure T surrounding the second color light-emitting element 202 can also be configured with two openings K2 arranged opposite each other along the first direction Y. In this case, the openings K2 of the isolation structure T surrounding the light-emitting element group 210 and the openings K2 of the isolation structure T surrounding the second color light-emitting element 202 are both arranged along the first direction Y. The two types of openings face the same direction but do not face each other, and the distance between the two types of openings is relatively large. This not only ensures the leakage current suppression effect, but also, combined with Figure 20 As shown, the orientation of the two types of openings corresponds to the current flow direction of the cathode 25 of the display area AA from the bottom edge of the first power supply voltage line PVEE1, making the current path of the cathode 25 smoother, the voltage drop smaller, and the uniformity of display brightness better.

[0110] Furthermore, in some optional embodiments of this application, such as Figure 16 As shown, the first color light-emitting element 201 and the third color light-emitting element 203 are alternately arranged along the first direction Y to form a light-emitting element group 210L, and the light-emitting element group 210L and the second color light-emitting element group 202L are alternately arranged along the second direction X. The isolation structure T around the light-emitting element group 210 includes at least two first sides B1 extending along the first direction Y and arranged opposite each other along the second direction X. With this arrangement, the extension direction of the two first sides B1 of the isolation structure T around the light-emitting element group 210 is consistent with the arrangement direction of the first color light-emitting element 201 and the third color light-emitting element 203 in the light-emitting element group 210. That is, the two first sides B1 of the isolation structure T around the light-emitting element group 210 constitute an isolation barrier between the light-emitting element group 210 and the second color light-emitting element 202 in the second direction X, and are a continuous solid blocking part along the first direction Y, ensuring that there is no direct straight conductive path between the light-emitting element group 210 and the second color light-emitting element 202, and stably suppressing lateral leakage.

[0111] It is understood that the two first sides B1 of the isolation structure T surrounding the light-emitting element group 210 can be long sides, and the isolation structure T surrounding the light-emitting element group 210 can also include two short sides extending along the second direction X and arranged opposite each other along the first direction Y, with openings K2 provided on the short sides, or the two sides of the isolation structure T surrounding the light-emitting element group 210 that are opposite each other along the first direction Y can be directly openings K2.

[0112] Furthermore, in some other optional embodiments of this application, such as Figures 7-8 as well as Figures 17-18As shown, multiple first-color light-emitting elements 201 are arranged along the first direction Y to form a first-color light-emitting element column 201L, and multiple third-color light-emitting elements 203 are arranged along the first direction Y to form a third-color light-emitting element column 203L. The light-emitting element group column 210L includes the first-color light-emitting element column 201L and the third-color light-emitting element column 203L, and the first-color light-emitting element column 201L and the third-color light-emitting element column 203L are staggered along the first direction Y. Furthermore, the light-emitting element group column 210L and the second-color light-emitting element column 202L are alternately arranged along the second direction X. This is also a Real RGB pixel design, which can effectively improve the pixel density of the display panel, reduce the jaggedness and graininess of the displayed image, significantly improve the clarity of text display and the fineness of the image, and reduce power consumption.

[0113] In this pixel arrangement, because the first color light-emitting element 201 and the third color light-emitting element 203 are not simply arranged in a straight line along the first direction Y, but are staggered along the first direction Y, the shape of the isolation structure T surrounding the pixel element group 210 composed of the first color light-emitting element 201 and the third color light-emitting element 203 also needs to be adjusted according to the contour of the light-emitting element 210. Specifically, the isolation structure T around the light-emitting element group 210 includes two second sides B2 extending along a third direction R and arranged opposite each other along the fourth direction T, and two third sides B3 extending along the fourth direction T and arranged opposite each other along the third direction R. The opening K2 of the isolation structure T around the light-emitting element group 210 is located on the second side B2, that is, the two second sides B2 of the isolation structure T around the light-emitting element group 210 are provided with openings K2 facing the first direction Y; wherein, the third direction R intersects with the first direction Y, and the third direction R intersects with the second direction X; the fourth direction T intersects with the first direction Y, and the fourth direction T intersects with the second direction X; the third direction R and the fourth direction T intersect.

[0114] This configuration not only ensures that the opening K2 of the isolation structure T surrounding the light-emitting element group 210 does not face the second color light-emitting element 202 (nor does it face the opening K2 of the isolation structure T surrounding the second color light-emitting element 202), effectively suppressing lateral leakage between the light-emitting element group 210 and the second color light-emitting element 202, but also that the configuration of the isolation structure T surrounding the light-emitting element group 210 and its opening K2 is highly matched with the outline of the staggered light-emitting element group.

[0115] Regarding the arrangement of the isolation structure T around the first color light-emitting element 202, in some embodiments of this application, another option is to not provide an isolation structure around the second color light-emitting element 202, such as... Figure 19As shown, considering that the light-emitting element 20 may also include a third color light-emitting element 203, and the first color light-emitting element 201, the second color light-emitting element 202 and the third color light-emitting element 203 are arranged adjacent to each other, an isolation structure T may be provided around the first color light-emitting element 201 and around the third color light-emitting element 203, and the opening K2 of the isolation structure T around the first color light-emitting element 201 does not face the second color light-emitting element 202, and the opening K2 of the isolation structure T around the third color light-emitting element 203 does not face the second color light-emitting element 202.

[0116] With this configuration, the isolation structures T surrounding the first color light-emitting element 201 and the third color light-emitting element 203 are continuous, open-less structures in their respective sections adjacent to the second color light-emitting element 202. This allows for the independent extension of the connection layer 23 between the second color light-emitting element 202 and the first color light-emitting element 201, and between the second color light-emitting element 202 and the third color light-emitting element 203. This forces the connection layer 23 to extend its path along the corresponding isolation structure T, increasing resistance and effectively suppressing lateral leakage between the second color light-emitting element 202 and the first color light-emitting element 201, and between the second color light-emitting element 202 and the third color light-emitting element 203.

[0117] Meanwhile, the opening K2 of the isolation structure T surrounding the first color light-emitting element 201 does not face the second color light-emitting element 202, and the opening K2 of the isolation structure T surrounding the third color light-emitting element 203 also does not face the second color light-emitting element 202. This prevents the formation of a direct linear conductive path between the second color light-emitting element 202 and the first color light-emitting element 201, and between the third color light-emitting element 203, through the opening K2, ensuring that the isolation effect is not weakened. Furthermore, the two independent isolation structures T are each provided with an opening K2, which can respectively ensure the electrical continuity of the cathode 25 (i.e., PVEE) surrounding the first color light-emitting element 201 and the third color light-emitting element 203, avoiding excessive voltage drop due to the obstruction of the isolation structure T, and ensuring the uniformity of display brightness.

[0118] Instead of treating the first color light-emitting element 201 and the third color light-emitting element 203 as a whole as a light-emitting element group 210 with an isolation structure, in this embodiment, isolation structures T are respectively set around the first color light-emitting element 201 and around the third color light-emitting element 203. This enables independent isolation and control of the first color light-emitting element 201 and the third color light-emitting element 203. If the opening K2 of the isolation structure T around the first color light-emitting element 201 and the opening K2 of the isolation structure T around the third color light-emitting element 203 do not face each other, the lateral leakage between the first color light-emitting element 201 and the third color light-emitting element 203 can also be effectively suppressed.

[0119] It is understandable that whether the first color light-emitting element 201 and the third color light-emitting element 203 are set as a light-emitting element group 210 with the isolation structure T, or the isolation structure T is set around the first color light-emitting element 201 and the third color light-emitting element 203 respectively, the top view shape of the isolation structure T can be set according to the outline of the light-emitting element or light-emitting element group to be surrounded.

[0120] Based on any of the above embodiments, optionally, in some embodiments of this application, such as Figures 6-19 As shown, the first color light-emitting element 201 can be one of a red light-emitting element and a green light-emitting element, the third color light-emitting element 203 can be the other of a red light-emitting element and a green light-emitting element, and the second color light-emitting element 202 can be a blue light-emitting element. Therefore, the aforementioned embodiments can at least suppress leakage current between the blue light-emitting element and the red light-emitting element (or the green light-emitting element), and can further suppress leakage current between the red light-emitting element and the green light-emitting element, thereby reducing the risk of crosstalk.

[0121] In the above embodiments, the display panel is mainly described using a Real RGB pixel arrangement as an example, wherein the pixel opening K1 corresponding to the light-emitting element (see reference for details) Figures 6-7 , Figures 9-12 , Figures 14-19 The top view shapes of the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203 can be circular to improve the diffraction phenomenon caused by external ambient light, or they can be square (see reference for details). Figure 8 , Figure 13 The top view shape of the first color light-emitting element 201, the second color light-emitting element 202, and the third color light-emitting element 203 (or other shapes) is not limited in this application.

[0122] Accordingly, embodiments of this application also provide a display device. Figure 21 A top view of the display device provided in an embodiment of this application is shown, as follows: Figure 21 As shown, the display device 400 includes the display panel 300 provided in any of the above embodiments. Since the display panel 300 has been described in detail in the foregoing embodiments, it will not be described again here.

[0123] The display device 400 can be any electronic device with display capabilities, such as a touch screen, mobile phone, tablet computer, laptop computer, e-reader, or television.

[0124] The various parts of this manual are described in a combination of parallel and progressive methods. Each part focuses on the differences between the other parts, and the same or similar parts can be referred to each other.

[0125] The features described above regarding the disclosed embodiments can be substituted or combined with each other to enable those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that, include: Array substrate; A light-emitting element layer located on one side of the array substrate, the light-emitting element layer includes a pixel definition layer, the pixel definition layer has a plurality of pixel openings, and a light-emitting element is correspondingly disposed on each pixel opening. The light-emitting element includes an anode, a first light-emitting layer, a connecting layer, a second light-emitting layer and a cathode stacked in a direction away from the array substrate, and the connecting layers of each light-emitting element are interconnected. The light-emitting element includes a first color light-emitting element and a second color light-emitting element arranged adjacent to each other. The light-emitting element layer also includes an isolation structure, and the isolation structure is disposed around at least one of the first color light-emitting element and the second color light-emitting element. The isolation structure has at least one opening; when the isolation structure is provided around both the first color light-emitting element and the second color light-emitting element, the openings of the isolation structure around the first color light-emitting element and the openings of the isolation structure around the second color light-emitting element do not face each other; when the isolation structure is provided around one of the first color light-emitting element and the second color light-emitting element, the openings of the isolation structure around the first color light-emitting element and the second color light-emitting element do not face the other.

2. The display panel according to claim 1, characterized in that, The isolation structure includes an isolation slot located in the pixel definition layer.

3. The display panel according to claim 1, characterized in that, The isolation structure includes isolation pillars located on the side of the pixel definition layer opposite to the array substrate.

4. The display panel according to claim 3, characterized in that, The isolation column is inverted trapezoidal.

5. The display panel according to claim 1, characterized in that, The isolation structure has two openings that are positioned opposite each other.

6. The display panel according to claim 1, characterized in that, The isolation structure is disposed around the second color light-emitting element.

7. The display panel according to claim 6, characterized in that, The light-emitting element further includes a third color light-emitting element, and the first color light-emitting element, the second color light-emitting element, and the third color light-emitting element are arranged adjacent to each other; The isolation structure is not provided around the first color light-emitting element or the third color light-emitting element, and the opening of the isolation structure around the second color light-emitting element does not face the third color light-emitting element.

8. The display panel according to claim 7, characterized in that, Multiple second-color light-emitting elements are arranged in a second-color light-emitting element column along a first direction, and multiple columns of second-color light-emitting elements are arranged along a second direction. Both the first direction and the second direction are parallel to the plane where the array substrate is located, and the first direction and the second direction intersect. Along the first direction, the first color light-emitting element and the second color light-emitting element do not overlap, and the third color light-emitting element and the second color light-emitting element do not overlap; The isolation structure surrounding the second color light-emitting element has two openings that are arranged opposite each other along the first direction.

9. The display panel according to claim 6, characterized in that, The light-emitting element further includes a third color light-emitting element, and the first color light-emitting element, the second color light-emitting element, and the third color light-emitting element are arranged adjacent to each other; The light-emitting element layer includes multiple pixel units, each pixel unit including a first color light-emitting element, a second color light-emitting element, and a third color light-emitting element. The first color light-emitting element and the third color light-emitting element in the pixel unit constitute a light-emitting element group, and the isolation structure is disposed around the light-emitting element group. The openings in the isolation structure surrounding the light-emitting element group and the openings in the isolation structure surrounding the second color light-emitting element do not face each other.

10. The display panel according to claim 6, characterized in that, The light-emitting element further includes a third color light-emitting element, and the first color light-emitting element, the second color light-emitting element, and the third color light-emitting element are arranged adjacent to each other; The isolation structure is disposed around at least one of the first color light-emitting element and the third color light-emitting element, and when the isolation structure is disposed around the third color light-emitting element, the openings of the isolation structure around the second color light-emitting element and the openings of the isolation structure around the third color light-emitting element do not face each other.

11. The display panel according to claim 10, characterized in that, The isolation structure is disposed around each of the first color light-emitting element, the second color light-emitting element and the third color light-emitting element.

12. The display panel according to claim 1, characterized in that, The isolation structure is not provided around the second color light-emitting element; The light-emitting element further includes a third color light-emitting element, and the first color light-emitting element, the second color light-emitting element, and the third color light-emitting element are arranged adjacent to each other; The light-emitting element layer includes multiple pixel units, each pixel unit including a first color light-emitting element, a second color light-emitting element, and a third color light-emitting element. The first color light-emitting element and the third color light-emitting element in the pixel unit constitute a light-emitting element group, and the isolation structure is disposed around the light-emitting element group. The openings in the isolation structure surrounding the light-emitting element group do not face the second color light-emitting element.

13. The display panel according to claim 1, characterized in that, The isolation structure is not provided around the second color light-emitting element; The light-emitting element further includes a third color light-emitting element, and the first color light-emitting element, the second color light-emitting element, and the third color light-emitting element are arranged adjacent to each other; The isolation structure is provided around the first color light-emitting element and around the third color light-emitting element, and the opening of the isolation structure around the third color light-emitting element does not face the second color light-emitting element.

14. The display panel according to claim 9 or 12, characterized in that, Multiple light-emitting element groups are arranged into a light-emitting element group column along a first direction, and multiple second-color light-emitting elements are arranged into a second-color light-emitting element column along the first direction. The light-emitting element group column and the second-color light-emitting element column are arranged alternately along a second direction. Both the first direction and the second direction are parallel to the plane where the array substrate is located, and the first direction and the second direction intersect. Along the first direction, the light-emitting element group and the second color light-emitting element do not overlap; The isolation structure surrounding the light-emitting element group has two openings that are arranged opposite to each other along the first direction.

15. The display panel according to claim 14, characterized in that, The first color light-emitting element and the third color light-emitting element are alternately arranged along the first direction to form the light-emitting element group; The isolation structure surrounding the light-emitting element group includes at least two first sides extending along the first direction and arranged opposite each other along the second direction.

16. The display panel according to claim 14, characterized in that, A plurality of first-color light-emitting elements are arranged in a first-color light-emitting element column along the first direction, and a plurality of third-color light-emitting elements are arranged in a second-color light-emitting element column along the first direction. The light-emitting element column includes the first-color light-emitting element column and the third-color light-emitting element column, and the first-color light-emitting element column and the third-color light-emitting element column are staggered along the first direction. The isolation structure surrounding the light-emitting element group includes two second sides extending along a third direction and arranged opposite each other along a fourth direction, and two third sides extending along the fourth direction and arranged opposite each other along the third direction, with the opening located on the second side; the third direction intersects with the first direction and the second direction, the fourth direction intersects with the first direction and the second direction, and the third direction intersects with the fourth direction.

17. The display panel according to claim 11, characterized in that, The isolation structure surrounding each of the first color light-emitting element, the second color light-emitting element, and the third color light-emitting element has two openings arranged opposite to each other, and the relative arrangement direction of the two openings on the isolation structure surrounding the first color light-emitting element is the same as the relative arrangement direction of the two openings on the isolation structure surrounding the third color light-emitting element.

18. The display panel according to claim 17, characterized in that, The relative orientation of the two openings on the isolation structure surrounding the second color light-emitting element is the same as the relative orientation of the two openings on the isolation structure surrounding the first color light-emitting element.

19. The display panel according to claim 18, characterized in that, Multiple second-color light-emitting elements are arranged in a second-color light-emitting element column along a first direction, and multiple columns of second-color light-emitting elements are arranged along a second direction. Both the first direction and the second direction are parallel to the plane where the array substrate is located, and the first direction and the second direction intersect. Along the first direction, the first color light-emitting element and the second color light-emitting element do not overlap, and the third color light-emitting element and the second color light-emitting element do not overlap; Each of the isolation structures has two openings disposed opposite each other along the first direction, or each of the isolation structures has two openings disposed opposite each other along the second direction.

20. The display panel according to claim 17, characterized in that, The relative orientation of the two openings on the isolation structure surrounding the second color light-emitting element intersects with the relative orientation of the two openings on the isolation structure surrounding the first color light-emitting element.

21. The display panel according to claim 20, characterized in that, The first color light-emitting element and the third color light-emitting element are alternately arranged in a light-emitting element group along a first direction, and a plurality of second color light-emitting elements are arranged in a second color light-emitting element column along the first direction. The light-emitting element group and the second color light-emitting element column are alternately arranged in a second direction. The first direction and the second direction are both parallel to the plane where the array substrate is located, and the first direction and the second direction intersect. The isolation structure surrounding the first color light-emitting element has two openings disposed opposite each other along a fifth direction, and the isolation structure surrounding the second color light-emitting element has two openings disposed opposite each other along the first direction, the fifth direction intersecting the first direction and the second direction.

22. The display panel according to claim 21, characterized in that, The first direction and the second direction are perpendicular, the fifth direction is at an angle of 45° to the first direction, and the fifth direction is at an angle of 45° to the second direction.

23. The display panel according to any one of claims 1-22, characterized in that, The first color light-emitting element is a red light-emitting element or a green light-emitting element, and the second color light-emitting element is a blue light-emitting element.

24. A display device, characterized in that, Includes the display panel as described in any one of claims 1-23.

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