Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel, a preparation method thereof and a display device, the display panel comprises a substrate and an isolation structure, the isolation structure is arranged on one side of the substrate, the isolation structure is enclosed to form an isolation opening and a light-transmitting opening, the isolation opening and the light-transmitting opening are arranged at an interval, and the isolation opening comprises a first isolation opening and a second isolation opening. According to the display panel provided by the invention, the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening; the problem that the isolation structure is damaged due to the fact that the side wall of the isolation opening where the prepared light-emitting unit is located is etched after the side wall of the light-transmitting opening is etched and overlapped is avoided, pixel failure is avoided, and the light transmittance and the display performance of the display panel are improved.

Description

Display panel and its manufacturing method, display device Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel, a method for manufacturing the same, and a display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide range of applications, becoming the mainstream of 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 this application is to provide a display panel that can avoid damage to the isolation structure and improve transmittance and display performance.

[0005] To achieve the above objectives, this application provides a display panel comprising:

[0006] Substrate;

[0007] An isolation structure is disposed on one side of the substrate, the isolation structure encloses and forms an isolation opening and a light-transmitting opening, the isolation opening and the light-transmitting opening are spaced apart, and the isolation opening includes a first isolation opening and a second isolation opening;

[0008] The minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening.

[0009] In one embodiment, the isolation opening further includes a third isolation opening;

[0010] Wherein, the minimum distance between the third isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than or equal to the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening; or,

[0011] The minimum distance between the third isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is less than or equal to the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening; or,

[0012] The minimum distance between the third isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is less than the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening, and greater than the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening.

[0013] In one embodiment, the light-emitting unit includes a first color light-emitting unit, a second color light-emitting unit, and a third color light-emitting unit, wherein the first isolation opening is used to accommodate the first color light-emitting unit, the second isolation opening is used to accommodate the second color light-emitting unit, and the third isolation opening is used to accommodate the third color light-emitting unit.

[0014] In one embodiment, the first color-emitting unit emits red light, the second color-emitting unit emits one of green and blue light, and the third color-emitting unit emits the other of green and blue light; or...

[0015] The first color-emitting unit emits green light, the second color-emitting unit emits one of blue light and red light, and the third color-emitting unit emits the other of blue light and red light; or...

[0016] The first color light-emitting unit is used to emit blue light, the second color light-emitting unit is used to emit one of green light and red light, and the third color light-emitting unit is used to emit the other of green light and red light;

[0017] Preferably, the first color light-emitting unit is used to emit blue light, the second color light-emitting unit is used to emit green light, and the third color light-emitting unit is used to emit red light.

[0018] In one embodiment, the isolation structure includes a first support portion and a second support portion, the second support portion being located on the side of the first support portion away from the substrate, and the second electrode being electrically connected to the first support portion;

[0019] Preferably, the orthographic projection of the first support portion on the substrate is located within the orthographic projection of the second support portion on the substrate;

[0020] Preferably, the minimum distance between the edge of the second support portion corresponding to the second isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening is greater than the minimum distance between the edge of the second support portion corresponding to the first isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening.

[0021] Preferably, the minimum distance between the edge of the second support portion corresponding to the third isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening is greater than or equal to the minimum distance between the edge of the second support portion corresponding to the second isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening.

[0022] Preferably, the minimum distance between the edge of the second support portion corresponding to the third isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening is less than or equal to the minimum distance between the edge of the second support portion corresponding to the first isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening.

[0023] Preferably, the minimum distance between the edge of the second support portion corresponding to the third isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening is less than the minimum distance between the edge of the second support portion corresponding to the second isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening, and is greater than the minimum distance between the edge of the second support portion corresponding to the first isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening.

[0024] In one embodiment, the first support portion includes a first sub-support portion and a second sub-support portion. The first sub-support portion is located between the second sub-support portion and the substrate. The orthographic projection area of ​​the first sub-support portion on the substrate is larger than the orthographic projection area of ​​the second sub-support portion on the substrate, and the orthographic projection of the second sub-support portion on the substrate is located within the orthographic projection of the first sub-support portion on the substrate. The second electrode overlaps with the first sub-support portion.

[0025] Preferably, the second electrode also overlaps with the second sub-support portion;

[0026] Preferably, the materials of the first sub-support portion and the second sub-support portion include conductive materials.

[0027] In one embodiment, the display panel further includes a pixel defining layer located between the isolation structure and the substrate. The pixel defining layer defines a plurality of pixel openings corresponding to the isolation openings. The orthographic projection of the pixel openings on the substrate lies within the orthographic projection of the corresponding isolation openings on the substrate. The pixel defining layer covers the gap between adjacent first electrodes and the edges of the first electrodes, such that the pixel openings expose the first electrodes.

[0028] In one embodiment, the display panel further includes a first encapsulation layer that covers the second electrode.

[0029] In one embodiment, the display panel further includes:

[0030] The second encapsulation layer is disposed on the side of the first encapsulation layer away from the substrate;

[0031] A third encapsulation layer is disposed on the side of the second encapsulation layer away from the substrate.

[0032] Based on the same inventive concept, this application also discloses a method for manufacturing a display panel, which includes:

[0033] Provide a substrate;

[0034] An isolation structure is formed on one side of the substrate; wherein the isolation structure encloses an isolation opening and a light-transmitting opening, the isolation opening and the light-transmitting opening are spaced apart, and the isolation opening includes a first isolation opening and a second isolation opening; wherein the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening.

[0035] In one embodiment, forming an isolation structure on one side of the substrate includes:

[0036] A first support layer is formed on one side of the substrate;

[0037] A second support layer is formed on the side of the first support layer away from the substrate;

[0038] The second support layer is graphically represented to form the second support section;

[0039] The first support layer is graphically represented to form a first support portion, and the first support portion and the second support portion form the isolation structure.

[0040] In one embodiment, after forming the isolation structure on one side of the substrate, the method further includes:

[0041] A first color emitting unit is prepared within the first isolation opening;

[0042] A second color emitting unit is prepared within the second isolation opening;

[0043] Preferably, the first color light-emitting unit is used to emit blue light, and the second color light-emitting unit is used to emit green light.

[0044] In one embodiment, the isolation opening further includes a third isolation opening;

[0045] Wherein, the minimum distance between the third isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than or equal to the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening.

[0046] In one embodiment, after fabricating the second color light-emitting unit within the second isolation opening, the method further includes:

[0047] A third color light-emitting unit is prepared within the third isolation opening;

[0048] Preferably, the third color light-emitting unit is used to emit red light.

[0049] In one embodiment, before forming the isolation structure on one side of the substrate, the method further includes:

[0050] A pixel defining layer is formed on one side of the substrate;

[0051] After forming the isolation structure on one side of the substrate, the method further includes:

[0052] The pixel delineation layer is patterned to form pixel openings, which are located within the isolation openings.

[0053] In one embodiment, before forming the pixel defining layer on one side of the substrate, the method further includes:

[0054] A first electrode is formed on one side of the substrate.

[0055] In one embodiment, after patterning the pixel delimiting layer to form pixel openings, the method further includes:

[0056] A light-emitting functional layer is formed within the isolation opening;

[0057] A second electrode is formed on the side of the light-emitting functional layer away from the substrate; wherein the first electrode, the light-emitting functional layer and the second electrode are stacked sequentially in a direction away from the substrate, and the first electrode, the light-emitting functional layer and the second electrode constitute a light-emitting unit.

[0058] In one embodiment, the method for manufacturing the display panel further includes:

[0059] A first encapsulation layer is formed on the side of the second electrode away from the substrate;

[0060] Preferably, the method for manufacturing the display panel further includes:

[0061] A second encapsulation layer is formed on the side of the first encapsulation layer away from the substrate;

[0062] A third encapsulation layer is formed on the side of the second encapsulation layer away from the substrate.

[0063] Based on the same inventive concept, this application also discloses a display device, which includes the above-described display panel.

[0064] Compared with the prior art, the display panel provided in this application has a minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening that is greater than the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening. This avoids damage to the isolation structure caused by the etching of the sidewall of the isolation opening where the light-emitting unit is located after the sidewall of the light-transmitting opening is etched and stacked, thus avoiding pixel failure and improving the light transmittance and display performance of the display panel. Attached Figure Description

[0065] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 is a schematic diagram of a related display panel;

[0067] Figure 2 is a partial schematic diagram of the first region in Figure 1;

[0068] Figure 3 is a partial structural schematic diagram of a display panel provided in an embodiment of this application;

[0069] Figure 4 is a schematic diagram of the layer structure of a display panel provided in an embodiment of this application;

[0070] Figure 5 is a schematic diagram of the layer structure of a display panel provided in another embodiment of this application;

[0071] Figure 6 is a schematic diagram of the layer structure of a display panel provided in another embodiment of this application;

[0072] Figure 7 is a schematic diagram of the isolation structure provided in another embodiment of this application;

[0073] Figure 8 is a flowchart of a method for manufacturing a display panel according to another embodiment of this application;

[0074] Figure 9 is a flowchart of a method for manufacturing a display panel according to another embodiment of this application;

[0075] Figures 10a-10d are schematic diagrams illustrating the process of manufacturing a display panel according to another embodiment of this application.

[0076] Marker explanation:

[0077] 100. Display panel; 110. Display area; 101. First area;

[0078] 1. Substrate;

[0079] 2. Isolation structure; 21. Isolation opening; 22. Light-transmitting opening; 23. First isolation opening; 24. Second isolation opening; 25. Third isolation opening; 26. First support part; 261. First sub-support part; 262. Second sub-support part; 27. Second support part;

[0080] 3. Light-emitting unit; 31. First color light-emitting unit; 32. Second color light-emitting unit; 34. First electrode; 35. Light-emitting functional layer; 36. Second electrode;

[0081] 4. Pixel demarcation layer; 41. Pixel aperture;

[0082] 5. First encapsulation layer;

[0083] 61. First support layer; 62. Second support layer. Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0085] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" 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.

[0086] Referring to FIG1, a related display panel 100 is shown. The display panel 100 includes a display area 110, which includes a first area 101. The first area 101 is used for under-display recognition, photography, or transparent display, etc. Therefore, the first area 101 needs to have a certain light transmittance.

[0087] Referring to FIG2, the display panel 100 includes an isolation structure 2, which forms an isolation opening 21 for accommodating light-emitting units, and adjacent light-emitting units are separated by the isolation structure 2.

[0088] In this process, by setting an isolation structure 2 at the gap between the light-emitting units, the functional film layers of adjacent light-emitting units 3 are separated. Thus, in the evaporation process of multiple functional film layers, it is only necessary to perform evaporation on the entire display panel, without using a mask to evaporate the area where the light-emitting units are located to form functional film layers. Therefore, the process of using the isolation structure 2 for evaporation does not need to consider the alignment accuracy problem during evaporation, thereby allowing the gap between the light-emitting units to be designed to be smaller, so as to increase the pixel density.

[0089] Please refer to Figure 2. In order to meet the light transmission requirements of the first region 101, a light-transmitting opening 22 is also provided on the isolation structure 2.

[0090] Through long-term research, the inventors discovered that some film layers of the light-emitting unit need to be vapor-deposited and etched on the entire surface during preparation. Since the light-emitting units of different colors are vapor-deposited and etched in sequence, this will cause the sidewall of the isolation opening where the light-emitting unit is prepared later to be etched, and the sidewall of the light-transmitting opening 22 to be etched multiple times, which will lead to damage to the isolation structure 2 and pixel failure.

[0091] Based on this, this application provides a display panel solution, as detailed in the following embodiments.

[0092] Referring to Figures 3 and 4, an embodiment of this application discloses a display panel 100, which includes a substrate 1 and an isolation structure 2. The isolation structure 2 is disposed on one side of the substrate 1 and forms an isolation opening 21 and a light-transmitting opening 22. The isolation opening 21 and the light-transmitting opening 22 are spaced apart. The isolation opening 21 includes a first isolation opening 23 and a second isolation opening 24.

[0093] Among them, the minimum distance between the second isolation opening 24 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is greater than the minimum distance between the first isolation opening 23 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22.

[0094] In this embodiment, the minimum distance between the first isolation opening 23 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is 'a', and the minimum distance between the second isolation opening 24 closest to the light-transmitting opening 22 and the light-transmitting opening 22 is 'b', satisfying b>a. Therefore, in the display panel 100 provided in this embodiment, light-emitting units or other film layers can be fabricated sequentially within the first isolation opening 23 and the second isolation opening 24. This avoids damage to the isolation structure 2 caused by the etching of the sidewalls of the light-transmitting opening 22 and the second isolation opening 24, preventing pixel failure and improving the light transmittance and display performance of the display panel 100.

[0095] Referring to Figure 3, in one embodiment, the isolation opening 21 further includes a third isolation opening 25; wherein the minimum distance between the third isolation opening 25 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is greater than or equal to the minimum distance between the second isolation opening 24 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22. In this case, light-emitting units or other films can be fabricated sequentially within the first isolation opening 23, the second isolation opening 24, and the third isolation opening 25.

[0096] The minimum distance between the third isolation opening 25, which is adjacent to the light-transmitting opening 22, and the light-transmitting opening 22 is c, which satisfies c≥b. Therefore, the display panel 100 provided in this embodiment avoids damage to the isolation structure 2 caused by the etching of the sidewall of the light-transmitting opening 22 and the etching of the sidewall of the third isolation opening 25, thus avoiding pixel failure and improving the light transmittance and display performance of the display panel 100.

[0097] In another embodiment, the minimum distance between the third isolation opening 25 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is less than or equal to the minimum distance between the first isolation opening 23 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22. In this case, a light-emitting unit or other film layer can be prepared within the third isolation opening 25 first.

[0098] In another embodiment, the minimum distance between the third isolation opening 25 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is less than the minimum distance between the second isolation opening 24 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22, and greater than the minimum distance between the first isolation opening 23 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22. In this case, light-emitting units or other films can be fabricated sequentially within the second isolation opening 24, the third isolation opening 25, and the first isolation opening 23.

[0099] Referring to Figure 5, in one embodiment, the isolation opening 21 is used to accommodate the light-emitting unit 3. The light-emitting unit 3 includes a first electrode 34, a light-emitting functional layer 35, and a second electrode 36 sequentially stacked along a direction away from the substrate 1. The light-emitting functional layer 35 and the second electrode 36 are located in the isolation opening 21. The first electrode 34, the light-emitting functional layer 35, and the second electrode 36 constitute the light-emitting unit 3. By applying different voltages to the first electrode 34 and the second electrode 36, a voltage difference is formed between the first electrode 34 and the second electrode 36, driving the light-emitting functional layer 35 to emit light. Optionally, the first electrode 34 is the anode, and the second electrode 36 is the cathode.

[0100] In one embodiment, the light-emitting unit 3 includes a first color light-emitting unit 31, a second color light-emitting unit 32 and a third color light-emitting unit, a first isolation opening 23 for accommodating the first color light-emitting unit 31, a second isolation opening 24 for accommodating the second color light-emitting unit 32 and a third isolation opening 25 for accommodating the third color light-emitting unit.

[0101] The isolation opening 21, used to accommodate the light-emitting unit 3, can be understood as accommodating the entire light-emitting unit 3, or as accommodating the main part of the light-emitting unit 3. This main part determines the position of the main light-emitting area of ​​the light-emitting unit 3. The light-transmitting opening 22 allows light to pass through the area where the light-transmitting opening 22 is located, so as to facilitate under-display recognition (such as fingerprint recognition, camera, etc.) or transparent display.

[0102] During fabrication, after fabricating the first color light-emitting unit 31 and the second color light-emitting unit 32, the third color light-emitting unit is fabricated. Specifically, during the etching of the first color light-emitting unit 31 and the second color light-emitting unit 32, the sidewalls of the third isolation opening 25 are also etched, resulting in the third isolation opening 25 undergoing one more etching operation than the sidewalls of the second isolation opening 24.

[0103] Optionally, the first color light-emitting unit 31 is used to emit red light, the second color light-emitting unit 32 is used to emit green light, and the third color light-emitting unit is used to emit blue light; or, the first color light-emitting unit 31 is used to emit red light, the second color light-emitting unit 32 is used to emit blue light, and the third color light-emitting unit is used to emit green light; or, the first color light-emitting unit 31 is used to emit green light, the second color light-emitting unit 32 is used to emit red light, and the third color light-emitting unit is used to emit blue light; or, the first color light-emitting unit 31 is used to emit blue light, the second color light-emitting unit 32 is used to emit green light, and the third color light-emitting unit is used to emit red light; or, the first color light-emitting unit 31 is used to emit blue light, the second color light-emitting unit 32 is used to emit green light, and the third color light-emitting unit is used to emit red light; or, the first color light-emitting unit 31 is used to emit blue light, the second color light-emitting unit 32 is used to emit red light, and the third color light-emitting unit is used to emit green light.

[0104] Preferably, the first color light-emitting unit 31 is used to emit blue light, the second color light-emitting unit 32 is used to emit green light, and the third color light-emitting unit is used to emit red light.

[0105] Please refer to Figure 5. In one embodiment, the isolation structure 2 includes a first support portion 26 and a second support portion 27. The second support portion 27 is located on the side of the first support portion 26 away from the substrate 1. The second electrode 36 is electrically connected to the first support portion 26, so that the first support portion 26 of the isolation structure 2 connects the second electrode 36 in series, thereby making the first support portion 26 and the second electrode 36 form a common electrode for driving.

[0106] Preferably, the orthographic projection of the first support portion 26 on the substrate 1 is located within the orthographic projection of the second support portion 27 on the substrate 1. Thus, at least the portion of the isolation structure 2 away from the substrate 1 is configured with a shape that is wider at the top and narrower at the bottom, so that the isolation structure 2 can block the light-emitting functional layer 35 of the adjacent light-emitting unit 3, thereby reducing the current crosstalk problem of the adjacent light-emitting unit 3.

[0107] Preferably, the minimum distance between the edge of the second support portion 27 corresponding to the second isolation opening 24 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22 is greater than the minimum distance between the edge of the second support portion 27 corresponding to the first isolation opening 23 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22. Specifically, the minimum distance between the second isolation opening 24 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is based on the edge of the second support portion 27, and the minimum distance between the first isolation opening 23 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is also based on the edge of the second support portion 27. In this case, light-emitting units or other film layers can be fabricated successively in the first isolation opening 23 and the second isolation opening 24.

[0108] Preferably, the minimum distance between the edge of the second support portion 27 corresponding to the third isolation opening 25 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22 is greater than or equal to the minimum distance between the edge of the second support portion 27 corresponding to the second isolation opening 24 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22. In this case, light-emitting units or other film layers can be fabricated sequentially within the first isolation opening 23, the second isolation opening 24, and the third isolation opening 25.

[0109] Preferably, the minimum distance between the edge of the second support portion 27 corresponding to the third isolation opening 25 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22 is less than or equal to the minimum distance between the edge of the second support portion 27 corresponding to the first isolation opening 23 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22. The minimum distance between the third isolation opening 25 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is also based on the edge of the second support portion 27. In this case, a light-emitting unit or other film layer can be prepared within the third isolation opening 25.

[0110] Preferably, the minimum distance between the edge of the second support portion 27 corresponding to the third isolation opening 25 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22 is less than the minimum distance between the edge of the second support portion 27 corresponding to the second isolation opening 24 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22, and greater than the minimum distance between the edge of the second support portion 27 corresponding to the first isolation opening 23 adjacent to the light-transmitting opening 22 and the edge of the second support portion 27 corresponding to the light-transmitting opening 22. In this case, light-emitting units or other film layers can be fabricated sequentially within the second isolation opening 24, the third isolation opening 25, and the first isolation opening 23.

[0111] Please continue to refer to Figure 5. In one embodiment, the display panel 100 further includes a first encapsulation layer 5, which covers the second electrode 36 and is used to protect the second electrode 36.

[0112] In one embodiment, the display panel 100 further includes a second encapsulation layer and a third encapsulation layer. The second encapsulation layer is disposed on the side of the first encapsulation layer 5 away from the substrate 1, and the third encapsulation layer is disposed on the side of the second encapsulation layer away from the substrate 1. The first and third encapsulation layers are inorganic layers, with high density to isolate water and oxygen. The second encapsulation layer is an organic layer, thus having a larger thickness to planarize the surface of the display panel, achieving an inorganic-organic-inorganic three-layer encapsulation.

[0113] Please continue to refer to Figure 6. In one embodiment, the display panel 100 further includes a pixel defining layer 4. The pixel defining layer 4 is located between the isolation structure 2 and the substrate 1. The pixel defining layer 4 defines a plurality of pixel openings 41 that correspond to the isolation openings 21 respectively. The orthographic projection of the pixel openings 41 on the substrate 1 is located within the orthographic projection of the corresponding isolation openings 21 on the substrate 1. The pixel defining layer 4 covers the gap between adjacent first electrodes 34 and the edge of the first electrodes 34, so that the pixel openings 41 expose the first electrodes 34. This allows the first electrodes 34 to have a larger design area without contacting the first support portion 26, so that the light-emitting unit 3 has a larger effective light-emitting area.

[0114] Referring to Figures 6 and 7, in one embodiment, the first support portion 26 includes a first sub-support portion 261 and a second sub-support portion 262. The first sub-support portion 261 is located between the second sub-support portion 262 and the substrate 1. The orthographic projection area of ​​the first sub-support portion 261 on the substrate 1 is larger than the orthographic projection area of ​​the second sub-support portion 262 on the substrate 1, and the orthographic projection of the second sub-support portion 262 on the substrate 1 is located within the orthographic projection of the first sub-support portion 261 on the substrate 1. The second electrode 36 overlaps with the first sub-support portion 261, which helps to ensure the stability of the electrical connection between the second electrode 36 and the first support portion 26.

[0115] Preferably, the second electrode 36 also overlaps with the second sub-support 262, which helps to increase the overlap area and further improve the overlap effect.

[0116] The first sub-support portion 261 is typically made of a metallic material, such as aluminum, and is formed by wet etching. Therefore, when wet etching is performed on a portion of the film layer of the light-emitting unit 3, the first sub-support portion 261 will be etched.

[0117] Based on the same inventive concept, and referring to FIG8, another embodiment of this application discloses a method for manufacturing a display panel. The display panel 100 prepared by this method is shown in FIG3 and 4. The method for manufacturing the display panel includes the following steps:

[0118] Step S10: Provide a substrate 1;

[0119] Step S20: An isolation structure 2 is formed on one side of the substrate 1; wherein the isolation structure 2 encloses an isolation opening 21 and a light-transmitting opening 22, the isolation opening 21 and the light-transmitting opening 22 are spaced apart, and the isolation opening 21 includes a first isolation opening 23 and a second isolation opening 24; wherein the minimum distance between the second isolation opening 24 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is greater than the minimum distance between the first isolation opening 23 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22.

[0120] Among them, the minimum distance between the first isolation opening 23 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is a, and the minimum distance between the second isolation opening 24 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is b, satisfying b>a.

[0121] The method for manufacturing the display panel provided in this embodiment avoids damage to the isolation structure 2 caused by the etching of the sidewall of the second isolation opening 24 where the light-emitting unit is located after the sidewall of the light-transmitting opening 22 is etched and superimposed, thus avoiding pixel failure and improving the light transmittance and display performance of the display panel 100.

[0122] Referring to FIG9, in one embodiment, step S20, forming an isolation structure 2 on one side of the substrate 1, includes the following steps:

[0123] Step S21: Form a first support layer 61 on one side of the substrate 1.

[0124] Step S22: Form a second support layer 62 on the side of the first support layer 61 away from the substrate 1; see Figure 10a.

[0125] Step S23: Graphicalize the second support layer 62 to form the second support part 27; see Figure 10b.

[0126] Step S24: The first support layer 61 is patterned to form a first support portion 26, and the first support portion 26 and the second support portion 27 form an isolation structure 2; see Figure 10c. During the formation of the second support portion 27, a light-transmitting opening 22, a first isolation opening 23, and a second isolation opening 24 are formed.

[0127] In one embodiment, after forming the isolation structure 2 on one side of the substrate 1, the following steps are further included:

[0128] A first color emitting unit 31 is prepared within the first isolation opening 23;

[0129] A second color light-emitting unit 32 is fabricated within the second isolation opening 24, as shown in FIG4. Preferably, the first color light-emitting unit 31 is used to emit blue light, and the second color light-emitting unit 32 is used to emit green light.

[0130] In one embodiment, the isolation opening 21 further includes a third isolation opening 25; wherein the minimum distance between the third isolation opening 25 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 is greater than or equal to the minimum distance between the second isolation opening 24 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22.

[0131] In one embodiment, after the second color light-emitting unit 32 is prepared within the second isolation opening 24, the following step is further included:

[0132] A third color light-emitting unit is prepared within the third isolation opening 25. Preferably, the third color light-emitting unit is used to emit red light.

[0133] At this time, by preparing light-emitting units in the first isolation opening 23, the second isolation opening 24, and the third isolation opening 25 in sequence, the sidewall of the light-transmitting opening 22 is not etched, and the sidewall of the second isolation opening 24 and the third isolation opening 25 are not etched, which would cause damage to the isolation structure 2, thus avoiding pixel failure and improving the light transmittance and display performance of the display panel 100.

[0134] In one embodiment, before forming the isolation structure 2 on one side of the substrate 1, the method further includes:

[0135] A pixel defining layer 4 is formed on one side of the substrate 1.

[0136] After forming the isolation structure 2 on one side of the substrate 1, the following is also included:

[0137] The pixel defining layer 4 is patterned to form a pixel opening 41, which is located within the isolation opening 21. The orthographic projection of the pixel opening 41 onto the substrate 1 lies within the orthographic projection of the corresponding isolation opening 21 onto the substrate 1. The pixel defining layer 4 covers the gap between adjacent first electrodes 34 and the edges of the first electrodes 34, so that the pixel opening 41 exposes the first electrodes 34. This allows the first electrodes 34 to have a larger design area without contacting the first support portion 26, thus enabling the light-emitting unit 3 to have a larger effective light-emitting area.

[0138] In one embodiment, before forming the pixel defining layer 4 on one side of the substrate 1, the method further includes:

[0139] A first electrode 34 is formed on one side of the substrate 1.

[0140] In one embodiment, after patterning the pixel defining layer 4 to form the pixel opening 41, the method further includes:

[0141] A light-emitting functional layer 35 is formed within the isolation opening 21;

[0142] A second electrode 36 is formed on the side of the light-emitting functional layer 35 away from the substrate 1; wherein, the first electrode 34, the light-emitting functional layer 35 and the second electrode 36 are stacked sequentially along the direction away from the substrate 1, and the first electrode 34, the light-emitting functional layer 35 and the second electrode 36 constitute the light-emitting unit 3.

[0143] In one embodiment, the method for manufacturing the display panel further includes:

[0144] A first encapsulation layer 5 is formed on the side of the second electrode 36 away from the substrate; the first encapsulation layer 5 is used to protect the second electrode 36.

[0145] Preferably, the method for manufacturing the display panel further includes:

[0146] A second encapsulation layer is formed on the side of the first encapsulation layer 5 away from the substrate 1;

[0147] A third encapsulation layer is formed on the side of the second encapsulation layer away from the substrate 1.

[0148] Among them, the first encapsulation layer 5 and the third encapsulation layer are inorganic layers. The inorganic layers are highly dense to isolate water and oxygen. The second encapsulation layer is an organic layer, which has a large thickness to flatten the surface of the display panel, thus realizing an inorganic-organic-inorganic three-layer encapsulation.

[0149] Another embodiment of this application discloses a display device, which includes the display panel 100 in the above embodiments. This display device can be used on smart devices (such as mobile phones, VR devices, computers, televisions, in-vehicle displays, etc.).

[0150] In this embodiment, the minimum distance between the second isolation opening 24 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22 in the display panel 100 is greater than the minimum distance between the first isolation opening 23 adjacent to the light-transmitting opening 22 and the light-transmitting opening 22. This avoids damage to the isolation structure 2 caused by the etching of the sidewall of the second isolation opening 24 where the light-emitting unit is located after the sidewall of the light-transmitting opening 22 is etched and stacked, thus avoiding pixel failure and improving the light transmittance and display performance of the display panel 100, thereby improving the performance of the display device.

[0151] Patent applications CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, CN117979755A, CN11799 CN1900A, CN117062489A, CN117580403A, CN116583135A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A describe relevant technical solutions for the isolation structure 2, the contents of which are incorporated herein by reference.

[0152] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0153] It should be noted that the above description describes some embodiments of this 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 a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0154] The embodiments of this 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 this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, include: Substrate; An isolation structure is disposed on one side of the substrate, the isolation structure enclosing an isolation opening and a light-transmitting opening, the isolation opening and the light-transmitting opening being spaced apart, the isolation opening including a first isolation opening and a second isolation opening; wherein, the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening.

2. The display panel as described in claim 1, characterized in that, The isolation opening further includes a third isolation opening; wherein, the minimum distance between the third isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than or equal to the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening; or, the minimum distance between the third isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is less than or equal to the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening; or, the minimum distance between the third isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is less than the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening, and greater than the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening.

3. The display panel as described in claim 2, characterized in that, The isolation opening is used to accommodate a light-emitting unit, which includes a first electrode, a light-emitting functional layer, and a second electrode stacked sequentially along a direction away from the substrate.

4. The display panel as described in claim 3, characterized in that, The light-emitting unit includes a first color light-emitting unit, a second color light-emitting unit, and a third color light-emitting unit. The first isolation opening is used to accommodate the first color light-emitting unit, the second isolation opening is used to accommodate the second color light-emitting unit, and the third isolation opening is used to accommodate the third color light-emitting unit.

5. The display panel as described in claim 4, characterized in that, The first color-emitting unit is used to emit red light, the second color-emitting unit is used to emit one of green light and blue light, and the third color-emitting unit is used to emit the other of green light and blue light; or, the first color-emitting unit is used to emit green light, the second color-emitting unit is used to emit one of blue light and red light, and the third color-emitting unit is used to emit the other of blue light and red light; or, the first color-emitting unit is used to emit blue light, the second color-emitting unit is used to emit one of green light and red light, and the third color-emitting unit is used to emit the other of green light and red light; preferably, the first color-emitting unit is used to emit blue light, the second color-emitting unit is used to emit green light, and the third color-emitting unit is used to emit red light.

6. The display panel as described in claim 5, characterized in that, The isolation structure includes a first support portion and a second support portion, the second support portion being located on the side of the first support portion away from the substrate, and the second electrode being electrically connected to the first support portion; preferably, the orthographic projection of the first support portion on the substrate lies within the orthographic projection of the second support portion on the substrate; preferably, the minimum distance between the edge of the second support portion corresponding to the second isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening is greater than the minimum distance between the edge of the second support portion corresponding to the first isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening; preferably, the minimum distance between the edge of the second support portion corresponding to the third isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening is greater than or equal to the minimum distance between the edge of the second support portion corresponding to the second isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening. The minimum distance between the edges of the second support portion corresponding to the opening; preferably, the minimum distance between the edge of the second support portion corresponding to the third isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening is less than or equal to the minimum distance between the edge of the second support portion corresponding to the first isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening; preferably, the minimum distance between the edge of the second support portion corresponding to the third isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening is less than the minimum distance between the edge of the second support portion corresponding to the second isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening, and greater than the minimum distance between the edge of the second support portion corresponding to the first isolation opening adjacent to the light-transmitting opening and the edge of the second support portion corresponding to the light-transmitting opening.

7. The display panel as described in claim 6, characterized in that, The first support portion includes a first sub-support portion and a second sub-support portion. The first sub-support portion is located between the second sub-support portion and the substrate. The orthographic projection area of ​​the first sub-support portion on the substrate is larger than the orthographic projection area of ​​the second sub-support portion on the substrate, and the orthographic projection of the second sub-support portion on the substrate is located within the orthographic projection of the first sub-support portion on the substrate. The second electrode overlaps with the first sub-support portion. Preferably, the second electrode also overlaps with the second sub-support portion. Preferably, the materials of the first sub-support portion and the second sub-support portion include conductive materials.

8. The display panel as described in claim 3, characterized in that, The display panel further includes a pixel defining layer located between the isolation structure and the substrate. The pixel defining layer defines a plurality of pixel openings corresponding to the isolation openings. The orthographic projection of the pixel openings on the substrate is located within the orthographic projection of the corresponding isolation openings on the substrate. The pixel defining layer covers the gap between adjacent first electrodes and the edges of the first electrodes, so that the pixel openings expose the first electrodes.

9. The display panel as described in claim 3, characterized in that, The display panel further includes a first encapsulation layer that covers the second electrode.

10. The display panel as claimed in claim 9, characterized in that, The display panel further includes: a second encapsulation layer disposed on the side of the first encapsulation layer away from the substrate; and a third encapsulation layer disposed on the side of the second encapsulation layer away from the substrate.

11. A method for manufacturing a display panel, characterized in that, include: Provide a substrate; An isolation structure is formed on one side of the substrate; wherein the isolation structure encloses an isolation opening and a light-transmitting opening, the isolation opening and the light-transmitting opening are spaced apart, and the isolation opening includes a first isolation opening and a second isolation opening; wherein the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than the minimum distance between the first isolation opening adjacent to the light-transmitting opening and the light-transmitting opening.

12. The method for manufacturing a display panel as described in claim 11, characterized in that, The method of forming an isolation structure on one side of the substrate includes: forming a first support layer on one side of the substrate; forming a second support layer on the side of the first support layer away from the substrate; patterning the second support layer to form a second support portion; and patterning the first support layer to form a first support portion, wherein the first support portion and the second support portion form the isolation structure.

13. The method for manufacturing a display panel as described in claim 11, characterized in that, After forming an isolation structure on one side of the substrate, the method further includes: preparing a first color light-emitting unit within the first isolation opening; preparing a second color light-emitting unit within the second isolation opening; preferably, the first color light-emitting unit is used to emit blue light, and the second color light-emitting unit is used to emit green light.

14. The method for manufacturing a display panel as described in claim 13, characterized in that, The isolation opening further includes a third isolation opening; wherein the minimum distance between the third isolation opening adjacent to the light-transmitting opening and the light-transmitting opening is greater than or equal to the minimum distance between the second isolation opening adjacent to the light-transmitting opening and the light-transmitting opening; preferably, after preparing the second color light-emitting unit in the second isolation opening, the method further includes: preparing a third color light-emitting unit in the third isolation opening; preferably, the third color light-emitting unit is used to emit red light.

15. The method for manufacturing a display panel as described in claim 11, characterized in that, Before forming the isolation structure on one side of the substrate, the method further includes: forming a pixel defining layer on one side of the substrate; after forming the isolation structure on one side of the substrate, the method further includes: patterning the pixel defining layer to form a pixel opening, the pixel opening being located within the isolation opening.

16. The method for manufacturing a display panel as described in claim 15, characterized in that, Before forming a pixel defining layer on one side of the substrate, the method further includes forming a first electrode on one side of the substrate.

17. The method for manufacturing a display panel as described in claim 16, characterized in that, After patterning the pixel defining layer to form a pixel opening, the method further includes: forming a light-emitting functional layer within the isolation opening; forming a second electrode on the side of the light-emitting functional layer away from the substrate; wherein the first electrode, the light-emitting functional layer, and the second electrode are sequentially stacked along the direction away from the substrate, and the first electrode, the light-emitting functional layer, and the second electrode constitute a light-emitting unit.

18. The method for manufacturing a display panel as described in claim 17, characterized in that, The method for manufacturing the display panel further includes forming a first encapsulation layer on the side of the second electrode away from the substrate.

19. The method for manufacturing a display panel as described in claim 18, characterized in that, The method for manufacturing the display panel further includes: forming a second encapsulation layer on the side of the first encapsulation layer away from the substrate; and forming a third encapsulation layer on the side of the second encapsulation layer away from the substrate.

20. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-10.

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