Display panel and display device

Abstract

The invention provides a display panel and a display device.The display panel comprises a substrate, an isolation structure and a lap joint part, the isolation structure is arranged on one side of the substrate, a plurality of isolation openings used for containing light-emitting units are defined by the isolation structure, the isolation structure comprises a supporting part and a crown part, the supporting part is arranged between the substrate and the crown part, and the lap joint part is arranged between the supporting part and the crown part. The supporting part comprises a first supporting branch part and a second supporting branch part, and the lap joint part at least partially covers the side wall, facing the isolation opening, of the second supporting branch part. According to the display panel provided by the invention, the lap joint part at least partially covers the side wall, facing the isolation opening, of the second supporting branch part, so that the electrical connection effect between the second electrode and the isolation structure is improved, poor connection between the second electrode and the isolation structure is avoided, pixel dark spots are avoided, and the display quality is improved. And the display performance of the display panel is improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display panel that can improve the overlapping effect and enhance the display performance.

[0005] Based on the above purpose, the present application provides a display panel, which includes:

[0006] substrate;

[0007] An isolation structure is arranged on one side of the substrate, the isolation structure encloses a plurality of isolation openings for accommodating light-emitting units, the isolation structure comprises a support portion and a crown portion, the support portion is arranged between the substrate and the crown portion, and the orthographic projection of the support portion on the substrate is located within the orthographic projection of the crown portion on the substrate; the support portion comprises a first support sub-portion and a second support sub-portion;

[0008] The first supporting section is located between the second supporting section and the substrate;

[0009] The overlapping portion at least partially covers a side wall of the second supporting section facing the isolation opening.

[0010] In one embodiment, the overlapping portion also partially covers the substrate, and the overlapping portion includes an overlapping surface facing the isolation opening, one end of the overlapping surface is connected to the side wall of the second supporting section, and the other end is connected to the substrate.

[0011] Preferably, the overlapping surface comprises a plane, and an angle between the overlapping surface and the plane where the substrate is located is less than or equal to an angle between a side wall of the second supporting section facing the isolation opening and the plane where the substrate is located.

[0012] Preferably, the overlapping surface comprises a curved surface;

[0013] Preferably, the curved surface is a cambered surface;

[0014] Preferably, the arc surface is convexly arranged toward the isolation opening.

[0015] In one embodiment, the overlapping portion includes a first overlapping section and a second overlapping section, the first overlapping section includes a first bonding surface, the first bonding surface is bonded to the side wall of the second supporting section, the second overlapping section includes a second bonding surface, the second bonding surface is bonded to a side of the substrate close to the isolation structure, the first overlapping section has a first overlapping surface facing the isolation opening on a side away from the second supporting section, and the second overlapping section has a second overlapping surface facing the isolation opening on a side away from the substrate;

[0016] Preferably, the orthographic projection of the first overlapping surface on the substrate does not overlap with the orthographic projection of the second overlapping surface on the substrate;

[0017] Preferably, the first overlapping surface is parallel to the side wall of the second supporting section, and the second overlapping surface is parallel to the surface of the substrate;

[0018] Preferably, the second overlapping section and the first supporting section are arranged in the same layer and have the same thickness;

[0019] Preferably, the first overlapping surface comprises a curved surface;

[0020] Preferably, the second overlapping surface comprises a curved surface.

[0021] In one embodiment, the first overlapping surface and the second overlapping surface are planes, and the angle between the plane where the first overlapping surface is located and the plane where the second overlapping surface is located is greater than the angle between the plane where the first bonding surface is located and the plane where the second bonding surface is located.

[0022] In one embodiment, the orthographic projection of the second supporting section on the substrate is located within the orthographic projection of the first supporting section on the substrate; the overlapping portion is located on a side of the first supporting section away from the substrate, the overlapping portion is arranged in the same layer as the second supporting section, and the overlapping portion also covers at least a portion of the first supporting section;

[0023] Preferably, a side of the overlapping portion away from the second supporting section has an overlapping surface facing the isolation opening, and the overlapping surface is parallel to a side wall of the second supporting section facing the isolation opening;

[0024] Preferably, the orthographic projection of the overlapping portion on the substrate is located within the orthographic projection of the first supporting section on the substrate.

[0025] In one embodiment, the overlapping portion and the second supporting portion are made of different materials;

[0026] Preferably, the overlapping portion is made of the same material as the first supporting section;

[0027] Preferably, the overlapping portion and the first supporting portion are made of molybdenum or titanium; and the second supporting portion is made of aluminum.

[0028] In one embodiment, the light-emitting unit includes a first electrode, a light-emitting layer, and a second electrode sequentially stacked on the substrate, the light-emitting layer and the second electrode are located in the isolation opening, and the second electrode overlaps the overlapping portion.

[0029] In one embodiment, a size of a portion of the second electrode overlapping the overlapping portion in a first direction is smaller than or equal to a size of the overlapping portion in the first direction; wherein the first direction is perpendicular to the surface of the substrate.

[0030] In one embodiment, the substrate includes a pixel defining layer, the pixel defining layer defines a plurality of pixel openings respectively corresponding to the isolation openings, and the pixel openings are connected to the corresponding isolation openings;

[0031] Preferably, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the corresponding isolation opening on the substrate, and the pixel defining layer covers the gaps between adjacent first electrodes and the edges of the first electrodes, so that the pixel opening exposes the first electrode.

[0032] In one embodiment, the display panel further includes a first encapsulation layer, the first encapsulation layer includes a plurality of encapsulation units arranged at intervals, and the encapsulation units cover the corresponding light-emitting units and at least a portion of the isolation structure;

[0033] Preferably, the packaging unit covers a portion of the side wall of the second supporting section that is not covered by the overlapping portion.

[0034] In one embodiment, the isolation openings include a first type of openings, a second type of openings and a third type of openings, and the first type of openings, the second type of openings and the third type of openings respectively define the light-emitting units with different colors of emitted light;

[0035] Preferably, the material of the crown comprises titanium or molybdenum;

[0036] Preferably, a size of the support portion in a first direction is 0.4um-2um; wherein the first direction is perpendicular to the surface of the substrate.

[0037] Based on the same inventive concept, the present application also discloses a display device, which includes the above-mentioned display panel.

[0038] Compared with the prior art, the display panel provided by the present application includes a supporting portion and an overlapping portion, wherein the supporting portion includes a first supporting section and a second supporting section; wherein the first supporting section is located between the second supporting section and the substrate, and the overlapping portion at least partially covers the side wall of the second supporting section facing the isolation opening, which is beneficial to improving the electrical connection effect between the second electrode and the isolation structure, avoiding poor connection between the second electrode and the isolation structure, and further avoiding the occurrence of pixel dark spots, thereby improving the display performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 is a schematic diagram of a related display panel;

[0041] Figure 2 is a schematic diagram of a film layer structure of a related display panel;

[0042] Figure 3 A schematic diagram of a film layer structure of a display panel provided in one embodiment of the present application;

[0043] Figure 4 A schematic diagram of a partial structure of a display panel provided in an embodiment of the present application;

[0044] Figure 5 A schematic diagram of a partial structure of a display panel provided in another embodiment of the present application;

[0045] Figure 6 A schematic diagram of a partial structure of a display panel provided in another embodiment of the present application;

[0046] Figure 7 A schematic diagram of a partial structure of a display panel provided in another embodiment of the present application;

[0047] Figure 8 A schematic diagram of a partial structure of a display panel provided in another embodiment of the present application;

[0048] Fig. 9 A schematic diagram of a partial structure of a display panel provided in another embodiment of the present application;

[0049] Fig.10A schematic diagram of a partial structure of a display panel provided in another embodiment of the present application;

[0050] Fig.11 A schematic diagram of the layer structure of a display panel provided in another embodiment of the present application.

[0051] Marking Description:

[0052] 100. Display panel;

[0053] 1. Substrate;

[0054] 2. Isolation structure; 21. Isolation opening; 22. Support portion; 23. Crown portion; 24. First support subdivision; 25. Second support subdivision; 27. Overlap portion; 271. Overlap surface; 28. First overlap subdivision; 281. First fitting surface; 282. First overlap surface; 29. ​​Second overlap subdivision; 291. Second fitting surface; 292. Second overlap surface;

[0055] 3. Light-emitting unit; 31. First electrode; 32. Light-emitting layer; 33. Second electrode; 34. Second electrode evaporation line;

[0056] 4. pixel definition layer; 41. pixel opening;

[0057] 5. The first encapsulation layer;

[0058] 6. Second encapsulation layer;

[0059] 7. The third encapsulation layer. DETAILED DESCRIPTION

[0060] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0061] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0062] Reference Figure 1-2 FIG. 1 is a schematic diagram of a structure of a related display panel, which includes a substrate 1 and an isolation structure 2 disposed on one side of the substrate 1. The isolation structure 2 encloses an isolation opening 21 for accommodating a light-emitting unit 3. Adjacent light-emitting units 3 are separated by the isolation structure 2. The cathode in the light-emitting unit 3 is electrically connected to the isolation structure 2. The light-emitting unit 3 generally includes R, G, and B, which are used to emit red light, green light, and blue light, respectively.

[0063] Among them, an isolation structure 2 is set at the gap between the light-emitting units 3 to separate the functional film layers of adjacent light-emitting units 3. In this way, in the evaporation process of multiple functional film layers, it is only necessary to perform evaporation on the entire surface of the display panel, without the need to use a fine mask plate to evaporate the area where the light-emitting unit 3 is located to form a functional film layer. Therefore, the process of evaporation using the isolation structure 2 does not need to consider the positioning accuracy during evaporation, so that the gap between the light-emitting units 3 can be designed to be smaller in size to increase the pixel density.

[0064] In the current display panel 100 , the electrical connection between the cathode of the light emitting unit 3 and the isolation structure 2 is poor, which easily causes dark spots in pixels, thereby affecting the display effect.

[0065] Based on this, the present application provides a display panel solution, as detailed in the following embodiments.

[0066] Reference Figure 3-4 As shown, an embodiment of the present application discloses a display panel 100, which includes a substrate 1, an isolation structure 2 and a lap portion 27. The isolation structure 2 is arranged on one side of the substrate 1, and the isolation structure 2 encloses a plurality of isolation openings 21 for accommodating the light-emitting units 3. The isolation structure 2 includes a support portion 22 and a crown portion 23. The support portion 22 is arranged between the substrate 1 and the crown portion 23. The support portion 22 includes a first support sub-portion 24 and a second support sub-portion 25. The first support sub-portion 24 is located between the second support sub-portion 25 and the substrate 1.

[0067] Please continue to refer to Figure 4 As shown, the overlapping portion 27 at least partially covers the side wall of the second supporting portion 25 facing the isolation opening 21 .

[0068] After long-term research, the inventors found that in the current three-layer isolation structure 2, the bottom layer is usually a material with good conductivity and good stability, and the middle layer is usually a thicker metal material (such as aluminum) that is easy to prepare. In order to improve the electrical overlap effect between the second electrode 33 and the isolation structure 2, the second electrode 33 is electrically overlapped with the bottom layer and the middle layer at the same time. However, the middle layer is easily oxidized, thereby affecting the electrical overlap effect.

[0069] The display panel 100 provided in this embodiment has a support portion 22 including a first support portion 24 and a second support portion 25, wherein the first support portion 24 is located between the second support portion 25 and the substrate 1, and the overlap portion 27 at least partially covers the side wall of the second support portion 25 facing the isolation opening 21, which is beneficial to improving the electrical connection effect between the second electrode 33 and the isolation structure 2, avoiding poor connection between the second electrode 33 and the isolation structure 2, and further avoiding the occurrence of pixel dark spots, thereby improving the display performance of the display panel 100.

[0070] Among them, the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the crown portion 23 on the substrate 1. In this way, the isolation structure 2 is set to a shape that is wide at the top and narrow at the bottom, so that the isolation structure 2 can block the light-emitting layer of the adjacent light-emitting unit 3 to reduce the current crosstalk problem of the adjacent light-emitting units 3.

[0071] In one embodiment, the isolation opening 21 includes a first type of opening, a second type of opening, and a third type of opening, and the first type of opening, the second type of opening, and the third type of opening respectively define light-emitting units 3 with different colors of emitted light, thereby improving the richness of the display of the display panel 100. Exemplarily, the light-emitting units 3 of different colors include light-emitting units R, light-emitting units B, and light-emitting units G. Further, the first type of opening, the second type of opening, and the third type of opening can be set as needed, and their shapes and sizes may be different, and are not specifically limited.

[0072] Preferably, the material of the crown 23 includes titanium or molybdenum.

[0073] Preferably, a size of the support portion 22 in the first direction includes 0.4um-2um, such as 0.4um, 0.5um, 1um, 2um, etc.; wherein the first direction is perpendicular to the surface of the substrate 1 .

[0074] The specific design of the isolation structure can refer to existing patents, such as CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A, which record the relevant contents of the isolation structure.

[0075] Please continue to refer to Figure 3As shown, in one embodiment, the light-emitting unit 3 includes a first electrode 31, a light-emitting layer 32, and a second electrode 33 sequentially stacked on the substrate 1, the light-emitting layer 32 and the second electrode 33 are partially located in the isolation opening 21, and the second electrode 33 overlaps the overlapping portion 27. In a specific embodiment, the first electrode 31 is an anode, and the second electrode 33 is a cathode. Different voltages are configured on the first electrode 31 and the second electrode 33 to form a voltage difference between the first electrode 31 and the second electrode 33, so as to drive the light-emitting layer 32 to emit light.

[0076] Please continue to refer to Figure 4 As shown, in one embodiment, the size of the portion of the second electrode 33 overlapping the overlapping portion 27 in the first direction (such as the X direction in the figure) is less than or equal to the size of the overlapping portion 27 in the first direction; wherein the first direction is perpendicular to the surface of the substrate 1, and the size in the first direction refers to the size of its positive projection in the first direction. That is, the second electrode 33 is entirely overlapped with the overlapping portion 27, and is not overlapped with the second supporting portion 25. Specifically, the top of the overlapping portion 27 can reach or exceed the boundary of the second electrode evaporation line 34, so that the overlapping area of ​​the second electrode 33 and the isolation structure 2 is entirely located on the overlapping portion 27, thereby improving the electrical overlap effect.

[0077] Please continue to refer to Figure 3 As shown, in one embodiment, the substrate 1 includes a pixel defining layer 4, which defines a plurality of pixel openings 41 corresponding to the isolation openings 21 respectively, and the pixel openings 41 are connected to the corresponding isolation openings 21, wherein the pixel defining layer 4 determines the shape and position of the light-emitting unit 3.

[0078] Preferably, the orthographic projection of the pixel opening 41 on the substrate 1 is within the orthographic projection of the corresponding isolation opening 21 on the substrate 1, and the pixel defining layer 4 covers the gaps between adjacent first electrodes 31 and the edges of the first electrodes 31, so that the pixel opening 41 exposes the first electrode 31. The pixel defining layer 4 separates the first electrode 31 from the isolation structure 2. Thus, the first electrode 31 can have a larger design area without contacting the isolation structure 2, so that the light-emitting unit 3 has a larger effective light-emitting area.

[0079] Reference Figure 4As shown, in one embodiment, the orthographic projection of the second support section 25 on the substrate 1 is located within the orthographic projection of the first support section 24 on the substrate 1; the overlapping portion 27 is located on the side of the first support section 24 away from the substrate 1, and the overlapping portion 27 is arranged in the same layer as the second support section 25, and the overlapping portion 27 also covers at least part of the first support section 24. Specifically, the orthographic projection area of ​​the second support section 25 on the substrate 1 is smaller than the orthographic projection area of ​​the first support section 24 on the substrate 1, so that part of the area on the first support section 24 is not covered by the second support section 25, while the overlapping portion 27 covers the area and the side wall of the second support section 25 facing the isolation opening 21, and the area is conducive to the film formation of the overlapping portion 27.

[0080] Preferably, the overlapping portion 27 has an overlapping surface 271 facing the isolation opening 21 on the side away from the second supporting section 25. The overlapping surface 271 is parallel to the side wall of the second supporting section 25 facing the isolation opening 21, and a film can be formed directly on the side wall of the second supporting section 25 facing the isolation opening 21, which is convenient for preparation.

[0081] Preferably, the orthographic projection of the overlapping portion 27 on the substrate 1 is located within the orthographic projection of the first supporting portion 24 on the substrate 1 .

[0082] Reference Figure 5 As shown, in one embodiment, the overlapping portion 27 partially covers the substrate 1, and the overlapping portion 27 includes an overlapping surface 271 facing the isolation opening 21, one end of the overlapping surface 271 is connected to the side wall of the second supporting section 25, and the other end is connected to the substrate 1. Among them, one end of the overlapping surface 271 is connected to the side wall of the second supporting section 25, and the other end is connected to the substrate 1, which means that the overlapping surface 271 is a complete surface, which is conducive to improving the continuity of the second electrode 33 on the overlapping surface 271, and the tightness of the second electrode 33 and the overlapping surface 271, thereby improving the electrical overlapping effect.

[0083] Please continue to refer to Figure 5 As shown, in one embodiment, the overlapping surface 271 includes a plane, and the angle between the plane where the overlapping surface 271 is located and the plane where the substrate 1 is located is less than or equal to the angle between the side wall of the second support section 25 facing the isolation opening 21 and the plane where the substrate 1 is located. This means that the film layer of the overlapping portion 27 can be made thicker, thereby improving the electrical overlapping effect with the second electrode 33. Among them, the angle between the plane where the overlapping surface 271 is located and the plane where the substrate 1 is located is less than or equal to 90 degrees, that is, the angle between the overlapping surface 271 and the bottom surface of the overlapping portion 27 and the substrate 1, and the angle between the side wall of the second support section 25 facing the isolation opening 21 and the plane where the substrate 1 is located is less than or equal to 90 degrees, that is, the angle between the side wall of the second support section 25 facing the isolation opening 21 and the bottom surface of the second support section 25 facing the substrate.

[0084] Meanwhile, compared with the current method of setting an overlapping step on the first supporting portion 24 and overlapping the second electrode 33 with the overlapping step, the display panel 100 in this embodiment can increase the film thickness of the second electrode 33 on the overlapping surface 271 to enhance the electrical overlapping effect.

[0085] Optionally, the lap surface 271 includes a curved surface. Specifically, the curved surface is a cambered surface, referring to Figure 6 As shown in FIG. 2 , the arc surface is convexly arranged toward the isolation opening 21. Figure 7 As shown, the arc surface is concave toward the isolation opening 21. Further, the overlap surface 271 can be a combination of at least two of a convex surface, a concave surface and a plane, which is not specifically limited.

[0086] Reference Figure 8 As shown, in one embodiment, the overlapping portion 27 includes a first overlapping section 28 and a second overlapping section 29, the first overlapping section 28 includes a first fitting surface 281, the first fitting surface 281 is fitted with the side wall of the second supporting section 25, the second overlapping section 29 includes a second fitting surface 291, the second fitting surface 291 is fitted with a side of the substrate 1 close to the isolation structure 2, the side of the first overlapping section 28 away from the second supporting section 25 has a first overlapping surface 282 facing the isolation opening 21, and the side of the second overlapping section 29 away from the substrate 1 has a second overlapping surface 292 facing the isolation opening 21.

[0087] The first overlap surface 282 and the second overlap surface 292 are two independent overlap surfaces, so that the first overlap section 28 and the second overlap section 29 can be formed into films separately, which is convenient for preparation. At the same time, this structure is conducive to increasing the total area of ​​the overlap region, thereby ensuring the electrical overlap effect with the second electrode 33.

[0088] Furthermore, the second overlapping section 29 also includes a third fitting surface, and the third fitting surface fits with the side wall of the first supporting section 24 to ensure electrical connection.

[0089] Preferably, the orthographic projection of the first overlap surface 282 on the substrate 1 does not overlap with the orthographic projection of the second overlap surface 292 on the substrate 1, thereby ensuring that the first overlap surface 282 and the second overlap surface 292 are arranged along the second direction (such as the Y direction in the figure), facilitating the formation of films on the first overlap section 28 and the second overlap section 29 respectively, and at the same time, facilitating the formation of films on the first overlap surface 282 and the second overlap surface 292 of the second electrode 33.

[0090] Preferably, the first overlapping surface 282 is parallel to the side wall of the second supporting section 25, and the second overlapping surface 292 is parallel to the surface of the substrate 1, so as to facilitate film formation of the first overlapping section 28 and the second overlapping section 29 and facilitate preparation.

[0091] Preferably, the second overlapping section 29 and the first supporting section 24 are arranged in the same layer and have the same thickness, so that the second overlapping section 29 and the first supporting section 24 can be formed into films simultaneously. Specifically, the second overlapping section 29 and the first supporting section 24 can be prepared first, and then the second supporting section 25 can be prepared on the first supporting section 24, and then the first overlapping section 28 can be prepared on the side wall of the second supporting section 25; of course, in other embodiments, the first overlapping section 28 and the second overlapping section 29 can be prepared after the first supporting section 24 and the second supporting section 25 are prepared.

[0092] Optionally, the first overlapping surface 282 includes a curved surface. Optionally, the second overlapping surface 292 includes a curved surface. Further, the first overlapping surface 282 includes a curved surface and a flat surface, and the second overlapping surface 292 includes a curved surface and a flat surface.

[0093] In one embodiment, the first overlapping surface 282 and the second overlapping surface 292 are planes, and the angle between the plane where the first overlapping surface 282 is located and the plane where the second overlapping surface 292 is located is greater than the angle between the plane where the first bonding surface 281 is located and the plane where the second bonding surface 291 is located. The angle between the first overlapping surface 282 and the second overlapping surface 292 is an obtuse angle, and the angle between the first bonding surface 281 and the second bonding surface 291 is an obtuse angle.

[0094] Specifically, refer to Fig. 9 and 10 As shown, the angle between the first overlapping surface 282 and the second overlapping surface 292 is b, and the angle between the first overlapping surface 282 and the second overlapping surface 292 is greater than the angle between the first bonding surface 281 and the second bonding surface 291, which means that the film layer of the overlapping portion 27 can be made thicker, thereby improving the electrical overlapping effect with the second electrode 33. Fig. 9 and Figure 8 The difference is that Fig. 9 The first overlap section 28 in the Figure 8 The thickness of the first overlapping portion 28 is relatively thick and gradually increases along the first direction, while the thickness of the second overlapping portion 29 is the same. Fig.10 and Figure 8 The difference is that Fig.10 The second overlap section 29 in the Figure 8 The thickness of the second overlapping portion 29 is thicker and gradually increases along the second direction, while the thickness of the first overlapping portion 28 is the same.

[0095] In one embodiment, the overlap portion 27 is made of different materials from the second support portion 25. The second support portion 25 is made of aluminum, etc., which is convenient for preparing a thicker structure. The overlap portion 27 can be made of molybdenum or titanium, etc., which have good conductivity and stability.

[0096] Preferably, the overlapping portion 27 is made of the same material as the first supporting portion 24; the material of the first supporting portion 24 is molybdenum or titanium, etc., which has good conductivity and stability.

[0097] Reference Fig.11 As shown, in one embodiment, the display panel 100 also includes a first encapsulation layer 5, the first encapsulation layer 5 includes a plurality of encapsulation units arranged at intervals, the encapsulation units cover the corresponding light-emitting units 3 and at least part of the isolation structure 2, and the first encapsulation layer 5 is used to protect the isolation structure 2 and the light-emitting unit 3.

[0098] Preferably, the packaging unit covers a portion of the side wall of the second supporting section 25 that is not covered by the overlapping portion 27 , so as to protect the second supporting section 25 .

[0099] Furthermore, the first encapsulation layer 5 is an inorganic layer, and the inorganic layer has high density to isolate water and oxygen. In a specific embodiment, the display panel 100 also includes a second encapsulation layer 6 and a third encapsulation layer 7, the second encapsulation layer 6 is located on the side of the first encapsulation layer 5 away from the substrate 1, and the third encapsulation layer 7 is located on the side of the second encapsulation layer 6 away from the substrate 1. The second encapsulation layer 6 is an organic layer, so it has a large thickness to flatten the surface of the display panel, and the third encapsulation layer 7 is an inorganic layer, realizing inorganic-organic-inorganic three-layer encapsulation.

[0100] Another embodiment of the present application discloses a display device, which includes the display panel 100 in the above embodiment. The display device can be on a smart device (such as a mobile phone, VR device, computer, television, car display, etc.).

[0101] In the display device of the present embodiment, the support portion 22 in the display panel 100 includes a first support portion 24 and a second support portion 25, wherein the first support portion 24 is located between the second support portion 25 and the substrate 1, and the overlapping portion 27 at least partially covers the side wall of the second support portion 25 facing the isolation opening 21, which is beneficial to improving the electrical connection effect between the second electrode 33 and the isolation structure 2, avoiding poor connection between the second electrode 33 and the isolation structure 2, and further avoiding the occurrence of pixel dark spots, thereby improving the performance of the display device.

[0102] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0103] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0104] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate; an isolation structure, arranged on one side of the substrate, the isolation structure encloses a plurality of isolation openings for accommodating light-emitting units, the isolation structure comprises a support portion and a crown portion, the support portion is arranged between the substrate and the crown portion, and the orthographic projection of the support portion on the substrate is located within the orthographic projection of the crown portion on the substrate; the support portion comprises a first support sub-portion and a second support sub-portion, the first support sub-portion is located between the second support sub-portion and the substrate; The overlapping portion at least partially covers a side wall of the second supporting section facing the isolation opening.

2. The display panel according to claim 1, wherein: The overlapping portion also partially covers the base plate. The overlapping portion includes an overlapping surface facing the isolation opening. One end of the overlapping surface is connected to the side wall of the second supporting section, and the other end is connected to the base plate.

3. The display panel according to claim 2, wherein: The overlapping surface comprises a plane, and an angle between the overlapping surface and the plane where the substrate is located is less than or equal to an angle between a side wall of the second supporting section facing the isolation opening and the plane where the substrate is located.

4. The display panel according to claim 2, wherein: The overlapping surface includes a curved surface; Preferably, the curved surface is a cambered surface; Preferably, the arc surface is convexly arranged toward the isolation opening.

5. The display panel according to claim 1, wherein: The overlapping portion includes a first overlapping section and a second overlapping section, the first overlapping section includes a first bonding surface, the first bonding surface is bonded to the side wall of the second supporting section, the second overlapping section includes a second bonding surface, the second bonding surface is bonded to a side of the substrate close to the isolation structure, the first overlapping section has a first overlapping surface facing the isolation opening on a side away from the second supporting section, and the second overlapping section has a second overlapping surface facing the isolation opening on a side away from the substrate; Preferably, an orthographic projection of the first overlapping surface on the substrate has no overlap with an orthographic projection of the second overlapping surface on the substrate.

6. The display panel according to claim 5, wherein: The first overlapping surface is parallel to the side wall of the corresponding second supporting section, and the second overlapping surface is parallel to the surface of the substrate; Preferably, the second overlapping section and the first supporting section are arranged in the same layer and have the same thickness.

7. The display panel according to claim 5, wherein: The first overlapping surface comprises a curved surface; Preferably, the second overlapping surface comprises a curved surface.

8. The display panel according to claim 6, wherein: The first overlapping surface and the second overlapping surface are planes, and an angle between the plane where the first overlapping surface is located and the plane where the second overlapping surface is located is greater than an angle between the plane where the first bonding surface is located and the plane where the second bonding surface is located.

9. The display panel according to claim 1, wherein: The orthographic projection of the second supporting section on the substrate is located within the orthographic projection of the first supporting section on the substrate; the overlapping portion is located on a side of the first supporting section away from the substrate, the overlapping portion is arranged in the same layer as the second supporting section, and the overlapping portion also covers at least a portion of the first supporting section; Preferably, a side of the overlapping portion away from the second supporting section has an overlapping surface facing the isolation opening, and the overlapping surface is parallel to a side wall of the second supporting section facing the isolation opening; Preferably, the orthographic projection of the overlapping portion on the substrate is located within the orthographic projection of the first supporting section on the substrate.

10. The display panel according to claim 1, wherein: The overlapping portion and the second supporting portion are made of different materials; Preferably, the overlapping portion is made of the same material as the first supporting section; Preferably, the material of the overlap portion and the first supporting section is molybdenum or titanium; The material of the second supporting section is aluminum.

11. The display panel according to any one of claims 1 to 10, characterized in that: The light-emitting unit includes a first electrode, a light-emitting layer, and a second electrode sequentially stacked on the substrate, the light-emitting layer and the second electrode are located in the isolation opening, and the second electrode overlaps the overlapping portion.

12. The display panel according to claim 11, wherein: The size of the overlapped portion of the second electrode in the first direction is smaller than or equal to the size of the overlapped portion in the first direction; wherein the first direction is perpendicular to the surface of the substrate.

13. The display panel according to claim 11, wherein: The substrate comprises a pixel defining layer, the pixel defining layer defines a plurality of pixel openings respectively corresponding to the isolation openings, and the pixel openings are connected to the corresponding isolation openings; Preferably, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the corresponding isolation opening on the substrate, and the pixel defining layer covers the gaps between adjacent first electrodes and the edges of the first electrodes, so that the pixel opening exposes the first electrode.

14. The display panel according to claim 1, wherein: The display panel further includes a first encapsulation layer, the first encapsulation layer includes a plurality of encapsulation units arranged at intervals, the encapsulation units cover the corresponding light-emitting units and at least a portion of the isolation structure; Preferably, the packaging unit covers a portion of the side wall of the second supporting section that is not covered by the overlapping portion.

15. The display panel according to claim 1, wherein: The isolation openings include a first type of opening, a second type of opening and a third type of opening, wherein the first type of opening, the second type of opening and the third type of opening respectively define the light-emitting units with different colors of emitted light; Preferably, the material of the crown comprises titanium or molybdenum; Preferably, a size of the support portion in a first direction is 0.4um-2um; wherein the first direction is perpendicular to the surface of the substrate.

16. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 15.

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