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, an isolation structure and a touch electrode, the isolation structure is arranged on one side of the substrate, an isolation opening and a light-transmitting opening are defined by the isolation structure, the isolation opening is used for containing a light-emitting unit, and the isolation opening and the light-transmitting opening are arranged at an interval; the touch electrodes are arranged on the sides, away from the substrate, of the isolation structures; wherein the orthographic projection, on the substrate, of the touch electrode is located in the orthographic projection, on the substrate, of the isolation structure, and the wiring direction of the touch electrode is the same as the wiring direction of the isolation structure. According to the display panel provided by the invention, the orthographic projection of the touch electrode on the substrate is located in the orthographic projection of the isolation structure on the substrate, so that the light transmittance and the display performance of the display panel are improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a method for preparing the same, 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 light transmittance and display performance.

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

[0006] substrate;

[0007] An isolation structure, wherein the isolation structure is disposed on one side of the substrate, the isolation structure encloses an isolation opening and a light-transmitting opening, and the isolation opening is spaced apart from the light-transmitting opening;

[0008] a light emitting unit, at least partly located in the isolation opening;

[0009] A touch electrode, wherein the touch electrode is disposed on a side of the isolation structure away from the substrate;

[0010] The orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0011] In one embodiment, the touch electrode includes a first annular structure and a second annular structure, wherein the orthographic projection of the first annular structure on the substrate surrounds the orthographic projection of the isolation opening on the substrate, and the orthographic projection of the second annular structure on the substrate surrounds the orthographic projection of the light-transmitting opening on the substrate.

[0012] In one embodiment, an annular gap is formed between the orthographic projection of the first annular structure on the substrate and the orthographic projection of the isolation opening on the substrate;

[0013] Preferably, along the extension direction of the annular gap, the width of the annular gap remains unchanged;

[0014] Preferably, the first annular structure comprises a curved segment;

[0015] Preferably, the first annular structure further includes a straight line segment connected to the curved line segment.

[0016] In one embodiment, the light-emitting unit includes an anode, a light-emitting functional layer, and a cathode which are stacked on the substrate and sequentially away from the substrate, and the light-emitting functional layer and the cathode are located at the isolation opening.

[0017] In one embodiment, the isolation structure includes a support portion and a crown portion, the crown portion is located on a side of the support portion away from the substrate, and an orthographic projection of an end of the support portion facing the crown portion on the substrate is located within an orthographic projection of the crown portion on the substrate;

[0018] Preferably, the support portion is a conductive structure, and the cathode is electrically connected to the support portion;

[0019] Preferably, the material of the support portion includes aluminum;

[0020] Preferably, the material of the crown comprises titanium;

[0021] Preferably, the isolation structure further comprises a supporting portion, which is arranged on a side of the support portion close to the substrate; the supporting portion is a conductive structure, and the cathode is electrically connected to the supporting portion;

[0022] Preferably, the material of the supporting portion includes molybdenum.

[0023] In one embodiment, the display panel further includes a pixel defining layer, which is located between the isolation structure and the substrate, the pixel defining layer defines a plurality of pixel openings corresponding to the isolation openings respectively, the pixel openings are connected to the corresponding isolation openings, 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 anodes and the edges of the anodes so that the pixel openings expose the anodes.

[0024] In one embodiment, the touch electrodes include a plurality of rows of first touch electrodes and a plurality of columns of second touch electrodes, and the first touch electrodes and the second touch electrodes are spaced apart from each other and intersect each other;

[0025] Preferably, the display panel further comprises an encapsulation layer, and the encapsulation layer covers the light emitting unit and the isolation structure.

[0026] Based on the same inventive concept, the present application also discloses a method for preparing a display panel, which comprises:

[0027] An isolation structure is formed on one side of the substrate; wherein the isolation structure encloses an isolation opening and a light-transmitting opening, and the isolation opening is spaced apart from the light-transmitting opening;

[0028] A touch electrode is formed on a side of the isolation structure away from the substrate; wherein the orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the isolation structure on the substrate, and the routing direction of the touch electrode is the same as the routing direction of the isolation structure.

[0029] In one embodiment, before forming the isolation structure on one side of the substrate, the method further includes:

[0030] forming an anode on one side of the substrate;

[0031] Before forming the touch electrode on the side of the isolation structure away from the substrate, the method further includes:

[0032] A light-emitting functional layer and a cathode are formed in the isolation opening; wherein the anode, the light-emitting functional layer and the cathode are stacked in sequence in a direction away from the substrate, and the anode, the light-emitting functional layer and the cathode constitute a light-emitting unit;

[0033] Preferably, the touch electrode comprises a first annular structure and a second annular structure, the orthographic projection of the first annular structure on the substrate surrounds the orthographic projection of the isolation opening on the substrate, and the orthographic projection of the second annular structure on the substrate surrounds the orthographic projection of the light-transmitting opening on the substrate;

[0034] Preferably, an annular gap is formed between the orthographic projection of the first annular structure on the substrate and the orthographic projection of the isolation opening on the substrate;

[0035] Preferably, along the extension direction of the annular gap, the width of the annular gap remains unchanged;

[0036] Preferably, the first annular structure comprises a curved segment;

[0037] Preferably, the first annular structure further includes a straight line segment connected to the curved line segment.

[0038] Based on the same inventive concept, the present application also discloses a display device, which includes the above-mentioned display panel.

[0039] Compared with the prior art, the display panel provided in the present application avoids the touch electrode from affecting light transmittance by locating the orthographic projection of the touch electrode on the substrate within the orthographic projection of the isolation structure on the substrate, thereby improving the light transmittance and display performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 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.

[0041] Figure 1 is a schematic diagram of a related display panel;

[0042] Figure 2 A schematic diagram of a hierarchical structure of a display panel provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of an isolation structure provided in another embodiment of the present application;

[0044] Figure 4 A top view of an isolation structure provided in one embodiment of the present application;

[0045] Figure 5 A top view of a touch electrode provided in one embodiment of the present application;

[0046] Figure 6 A top view of an isolation structure and a touch electrode provided in an embodiment of the present application;

[0047] Figure 7 for Figure 6 Schematic diagram of the local structure;

[0048] Figure 8 A schematic diagram of the structure of a touch electrode provided in another embodiment of the present application;

[0049] Fig. 9 A flow chart of a method for preparing a display panel provided in another embodiment of the present application.

[0050] Marking Description:

[0051] 100, display panel; 110, display area; 101, first area;

[0052] 1. Substrate;

[0053] 2. Isolation structure; 21. Isolation opening; 22. Light-transmitting opening; 23. Supporting part; 24. Crown part; 25. Supporting part;

[0054] 3. touch electrode; 31. first annular structure; 311. curved segment; 312. straight segment; 32. second annular structure; 33. first touch electrode; 34. second touch electrode;

[0055] 4. Light-emitting unit; 41. Anode; 42. Light-emitting functional layer; 43. Cathode;

[0056] 5. Annular gap;

[0057] 6. pixel definition layer; 61. pixel opening;

[0058] 7. Encapsulation layer. DETAILED DESCRIPTION

[0059] 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.

[0060] 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.

[0061] Reference Figure 1 , is a related display panel 100, the display panel 100 includes a display area 110, the display area 110 includes a first area 101, the first area 101 is used for under-screen recognition, video or transparent display, so the first area 101 needs to have a certain light transmittance. At the same time, the display panel 100 also includes a light-emitting unit, an isolation structure and a touch electrode, the isolation structure is used to isolate the functional layer of the light-emitting unit, and the touch electrode is used to realize the touch function.

[0062] After long-term research, the inventors found that the setting of the isolation structure and the touch electrode will affect the transmittance of the display panel 100, especially in the first area 101 which has high requirements for transmittance. If the transmittance cannot meet the requirements, it will affect the under-screen recognition, camera or transparent display functions of this area.

[0063] Based on this, the present application provides a display panel solution, as detailed in the following embodiments.

[0064] Reference Figure 2-Figure 6 As shown, an embodiment of the present application discloses a display panel 100, which includes a substrate 1, an isolation structure 2, a touch electrode 3 and a light-emitting unit. The isolation structure 2 is arranged on one side of the substrate 1, and the isolation structure 2 encloses an isolation opening 21 and a light-transmitting opening 22. The light-emitting unit 4 is at least partially located in the isolation opening 21, and the isolation opening 21 and the light-transmitting opening 22 are arranged at intervals; the touch electrode 3 is arranged on the side of the isolation structure 2 away from the substrate 1. The orthographic projection of the touch electrode 3 on the substrate 1 is located within the orthographic projection of the isolation structure 2 on the substrate 1.

[0065] The range of the isolation opening 21 is as follows: Figure 2 In d1, the range of the light-transmitting opening 22 is as follows Figure 2 In d2, the isolation opening 21 is used to accommodate the light-emitting unit 4, which can be understood as the isolation opening 21 accommodating the entire light-emitting unit 4, or can be understood as the isolation opening 21 accommodating a major portion of the light-emitting unit 4, which determines the position of the main light-emitting area of ​​the light-emitting unit 4. The light-transmitting opening 22 can make the area where the light-transmitting opening 22 is located transparent to facilitate under-screen recognition (such as fingerprint recognition, camera, etc.) or transparent display, etc.

[0066] It should be noted that, since the light emitting unit 4 generally includes R, G, and B, which are respectively used to emit red light, green light, and blue light, the isolation opening 21 also includes three types of isolation openings for accommodating R, G, and B, respectively, and since the sizes of R, G, and B are different, the sizes of the three types of isolation openings 21 are also different. Correspondingly, since the light-transmitting opening 22 is spaced apart from the isolation opening 21, the light-transmitting opening 22 also includes multiple types of light-transmitting openings 22 with different sizes and shapes.

[0067] The display panel 100 provided in this embodiment prevents the touch electrode 3 from affecting light transmission by locating the orthographic projection of the touch electrode 3 on the substrate 1 within the orthographic projection of the isolation structure 2 on the substrate 1 , thereby improving the light transmittance and display performance of the display panel 100 .

[0068] Reference Figure 5 As shown, in one embodiment, the touch electrode 3 includes a first annular structure 31 and a second annular structure 32, the orthographic projection of the first annular structure 31 on the substrate 1 surrounds the orthographic projection of the isolation opening 21 on the substrate 1, and the orthographic projection of the second annular structure 32 on the substrate 1 surrounds the orthographic projection of the light-transmitting opening 22 on the substrate 1.

[0069] Among them, the orthographic projection of the first annular structure 31 on the substrate 1 surrounds the orthographic projection of the isolation opening 21 on the substrate 1, and the orthographic projection of the second annular structure 32 on the substrate 1 surrounds the orthographic projection of the light-transmitting opening 22 on the substrate 1, which can avoid the touch electrode 3 from blocking the isolation opening 21 and the light-transmitting opening 22, while ensuring the uniformity of the distribution of the touch electrode 3.

[0070] There are three different types of isolation openings 21 , and correspondingly there are three different types of first annular structures. There are multiple types of light-transmitting openings 22 , and correspondingly there are multiple types of second annular structures 32 .

[0071] Reference Figure 7 As shown, in one embodiment, an annular gap 5 is formed between the orthographic projection of the first annular structure 31 on the substrate 1 and the orthographic projection of the isolation opening 21 on the substrate 1 , and the annular gap 5 can further prevent the touch electrode 3 from blocking the isolation opening 21 .

[0072] Preferably, the width of the annular gap 5 remains unchanged along the extension direction of the annular gap 5. The width of the annular gap 5 is d3, and the unchanged width of the annular gap 5 can avoid color deviation caused by the touch electrode 3.

[0073] Preferably, the first annular structure 31 includes a curved segment 311. The curved structure is conducive to further reducing color deviation. Specifically, since the edge of the isolation opening 21 generally includes an arc portion, the curved segment 311 can be arranged corresponding to the arc portion, thereby ensuring that the gap width between the curved segment 311 and the arc portion remains unchanged along the extension direction of the annular gap 5, thereby further reducing color deviation.

[0074] Preferably, the first annular structure 31 further includes a straight segment 312 connected to the curved segment 311. Specifically, when the edge of the isolation opening 21 includes a straight portion, the straight segment 312 can be arranged corresponding to the straight portion, thereby ensuring that the gap width between the straight segment 312 and the straight portion remains unchanged along the extension direction of the straight line, thereby further reducing color deviation.

[0075] Please continue to refer to Figure 2As shown, in one embodiment, the light-emitting unit 4 includes an anode 41, a light-emitting functional layer 42 and a cathode 43 which are stacked on the substrate 1 and sequentially away from the substrate 1, and the light-emitting functional layer 42 and the cathode 43 are located at the isolation opening 21. Among them, the anode 41 plays a role in providing positive charge in the light-emitting unit 4. It is usually made of a material with good conductivity and light transmittance, such as indium tin oxide (ITO). The anode 41 can effectively introduce the current provided by the outside into the light-emitting unit 4. The light-emitting functional layer 42 is the core part of the light-emitting unit 4. This layer contains organic or inorganic materials that can generate light radiation under the action of an electric field. Different material combinations and structural designs can achieve light-emitting effects of different colors and brightness. The cathode 43 is responsible for receiving electrons from the external circuit and injecting them into the light-emitting unit 4. The cathode material generally has a lower work function to facilitate the injection of electrons.

[0076] Further, the light-emitting functional layer 42 may include a first common layer, a light-emitting layer, and a second common layer, which are sequentially stacked on the anode 41. The first common layer may include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second common layer may include an electron injection layer, an electron transport layer, a hole blocking layer, etc. The setting of the isolation structure 2 needs to make the first common layer (the main film layer causing current crosstalk) of each light-emitting unit 4 electrically disconnected from each other.

[0077] Please continue to refer to Figure 2 As shown, in one embodiment, the isolation structure 2 includes a support portion 23 and a crown portion 24, the crown portion 24 is located on the side of the support portion 23 away from the substrate 1, and the orthographic projection of one end of the support portion 23 facing the crown portion 24 on the substrate 1 is located within the orthographic projection of the crown portion 24 on the substrate 1; wherein the support portion 23 is a conductive structure, and the cathode 43 is electrically connected to the support portion 23. In this way, at least the portion of the isolation structure 2 away from the substrate 1 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 functional layer 42 of the adjacent light-emitting unit 4 to reduce the current crosstalk problem of the adjacent light-emitting unit 4. Preferably, the material of the crown portion 24 includes titanium or the like.

[0078] Preferably, the support portion 23 is a conductive structure, and the cathode 43 is electrically connected to the support portion 23, so that the support portion 23 of the isolation structure 2 connects the cathode 43 in series, so that the support portion 23 and the cathode 43 constitute a common electrode for driving. Preferably, the material of the support portion 23 includes metals such as aluminum, which is convenient for preparing a thicker film structure.

[0079] It should be noted that the material of the cathode 43 can be a metal material. The smaller the thickness of the cathode 43, the higher its transmittance, but the higher its resistivity. If the thickness of the cathode 43 is too small, without setting the isolation structure 2, the voltage drop of the cathode 43 (the common electrode at this time) will be too large. In this embodiment, the cathode 43 is connected to the conductive support part 23, which can remove the thickness restriction of the cathode 43, so that the cathode 43 has a smaller thickness and has a higher transmittance.

[0080] Please refer to Figure 3 As shown, in one embodiment, the isolation structure 2 further includes a supporting portion 25, which is disposed on a side of the support portion 23 close to the substrate 1; the supporting portion 25 is a conductive structure, and the cathode 43 is electrically connected to the supporting portion 25. Preferably, the material of the supporting portion 25 includes molybdenum, etc., which has good conductivity and stability.

[0081] Please continue to refer to Figure 2 As shown, in one embodiment, the display panel 100 further includes a pixel defining layer 6, which is located between the isolation structure 2 and the substrate 1, and defines a plurality of pixel openings 61 corresponding to the isolation openings 21, respectively, and the pixel openings 61 are connected to the corresponding isolation openings 21, and the orthographic projection of the pixel openings 61 on the substrate 1 is located within the orthographic projection of the corresponding isolation openings 21 on the substrate 1, and the pixel defining layer 6 covers the gaps between adjacent anodes 41 and the edges of the anodes 41, so that the pixel openings 61 expose the anodes 41. Thus, the anodes 41 can have a larger design area without contacting the support portion 23, so that the light-emitting unit 4 has a larger effective light-emitting area.

[0082] Please refer to Figure 8 As shown, in one embodiment, the touch electrode 3 includes multiple rows of first touch electrodes 33 and multiple columns of second touch electrodes 34, and the first touch electrodes 33 and the second touch electrodes 34 are spaced apart from each other and cross each other; wherein the row direction is the X direction in the figure, and the column direction is the Y direction in the figure.

[0083] Among them, the first touch electrode 33 is responsible for detecting the touch action in the row direction, which is used to sense the position and movement of the finger or stylus in the row direction. The second touch electrode 34 is responsible for detecting the touch operation in the column direction, which is used to sense the position and movement of the finger or stylus in the column direction. When the user performs a touch operation, such as sliding a finger on the screen, the first touch electrode 33 and the second touch electrode 34 will receive corresponding changes in electrical signals. By analyzing and processing these electrical signals, the system can accurately determine the touch position, action type (such as click, slide, long press, etc.) and movement trajectory.

[0084] Please continue to refer to Figure 2As shown, in one embodiment, the display panel 100 further includes an encapsulation layer 7 , and the encapsulation layer 7 covers the light emitting unit 4 and the isolation structure 2 to protect the light emitting unit 4 and the isolation structure 2 .

[0085] Furthermore, the encapsulation layer 7 includes a first encapsulation layer, a second encapsulation layer and a third encapsulation layer. The second encapsulation layer is located between the first encapsulation layer and the third encapsulation layer. The first encapsulation layer and the third encapsulation layer are inorganic layers. The inorganic layers have high density to isolate water and oxygen. The second encapsulation layer is an organic layer, so it has a large thickness to flatten the surface of the display panel, thereby realizing inorganic-organic-inorganic three-layer encapsulation.

[0086] Based on the same inventive concept, Fig. 9 As shown, another embodiment of the present application discloses a method for preparing a display panel. The display panel 100 prepared by the preparation method can refer to Figure 2-Figure 6 The method for preparing the display panel comprises the following steps:

[0087] Step S10 , forming an isolation structure 2 on one side of the substrate 1 ; wherein the isolation structure 2 encloses an isolation opening 21 and a light-transmitting opening 22 , and the isolation opening 21 and the light-transmitting opening 22 are spaced apart.

[0088] Step S20 , forming a touch electrode 3 on a side of the isolation structure 2 facing away from the substrate 1 ; wherein the orthographic projection of the touch electrode 3 on the substrate 1 is located within the orthographic projection of the isolation structure 2 on the substrate 1 .

[0089] The method for manufacturing a display panel provided in this embodiment prevents the touch electrode 3 from affecting light transmission by locating the orthographic projection of the touch electrode 3 on the substrate 1 within the orthographic projection of the isolation structure 2 on the substrate 1 , thereby improving the light transmittance and display performance of the display panel 100 .

[0090] In one embodiment, before step S10, forming the isolation structure 2 on one side of the substrate 1, the following steps are further included:

[0091] An anode 41 is formed on one side of the substrate 1;

[0092] Step S20, before forming the touch electrode 3 on the side of the isolation structure 2 facing away from the substrate 1, further comprising the following steps:

[0093] A light-emitting functional layer 42 and a cathode 43 are formed in the isolation opening 21; wherein the anode 41, the light-emitting functional layer 42 and the cathode 43 are sequentially stacked in a direction away from the substrate 1, and the anode 41, the light-emitting functional layer 42 and the cathode 43 constitute a light-emitting unit 4. Figure 2 shown.

[0094] Reference Figure 4As shown, in one embodiment, in step S20, the touch electrode 3 includes a first annular structure 31 and a second annular structure 32, the orthographic projection of the first annular structure 31 on the substrate 1 surrounds the orthographic projection of the isolation opening 21 on the substrate 1, and the orthographic projection of the second annular structure 32 on the substrate 1 surrounds the orthographic projection of the light-transmitting opening 22 on the substrate 1.

[0095] Among them, the orthographic projection of the first annular structure 31 on the substrate 1 surrounds the orthographic projection of the isolation opening 21 on the substrate 1, and the orthographic projection of the second annular structure 32 on the substrate 1 surrounds the orthographic projection of the light-transmitting opening 22 on the substrate 1, which can avoid the touch electrode 3 from blocking the isolation opening 21 and the light-transmitting opening 22, while ensuring the uniformity of the distribution of the touch electrode 3.

[0096] Preferably, an annular gap 5 is formed between the orthographic projection of the first annular structure 31 on the substrate 1 and the orthographic projection of the isolation opening 21 on the substrate 1 , and the annular gap 5 can further prevent the touch electrode 3 from blocking the isolation opening 21 .

[0097] Preferably, the width of the annular gap 5 remains unchanged along the extension direction of the annular gap 5. The width of the annular gap 5 is d, and the unchanged width of the annular gap 5 can avoid color deviation caused by the touch electrode 3.

[0098] Preferably, the first annular structure 31 includes a curved segment 311. The curved structure is conducive to further reducing color deviation. Specifically, since the edge of the isolation opening 21 generally includes an arc portion, the curved segment 311 can be arranged corresponding to the arc portion, thereby ensuring that the gap width between the curved segment 311 and the arc portion remains unchanged along the extension direction of the annular gap 5, thereby further reducing color deviation.

[0099] Preferably, the first annular structure 31 further includes a straight segment 312 connected to the curved segment 311. Specifically, when the edge of the isolation opening 21 includes a straight portion, the straight segment 312 can be arranged corresponding to the straight portion, thereby ensuring that the gap width between the straight segment 312 and the straight portion remains unchanged along the extension direction of the straight line, thereby further reducing color deviation.

[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, TV, car display, etc.).

[0101] In the display device of this embodiment, the display panel 100 avoids the touch electrode 3 from affecting the light transmittance by locating the orthographic projection of the touch electrode 3 on the substrate 1 within the orthographic projection of the isolation structure 2 on the substrate 1, thereby improving the light transmittance and display performance of the display panel 100, 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, wherein the isolation structure is disposed on one side of the substrate, the isolation structure encloses an isolation opening and a light-transmitting opening, and the isolation opening is spaced apart from the light-transmitting opening; a light emitting unit, at least partly located in the isolation opening; A touch electrode, wherein the touch electrode is disposed on a side of the isolation structure away from the substrate; The orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the isolation structure on the substrate.

2. The display panel according to claim 1, wherein: The touch electrode includes a first annular structure and a second annular structure. The orthographic projection of the first annular structure on the substrate surrounds the orthographic projection of the isolation opening on the substrate. The orthographic projection of the second annular structure on the substrate surrounds the orthographic projection of the light-transmitting opening on the substrate.

3. The display panel according to claim 2, wherein: An annular gap is formed between the orthographic projection of the first annular structure on the substrate and the orthographic projection of the isolation opening on the substrate; Preferably, along the extension direction of the annular gap, the width of the annular gap remains unchanged; Preferably, the first annular structure comprises a curved segment; Preferably, the first annular structure further includes a straight line segment connected to the curved line segment.

4. The display panel according to claim 1, wherein: The light-emitting unit comprises an anode, a light-emitting functional layer and a cathode which are stacked on the substrate and sequentially away from the substrate, and the light-emitting functional layer and the cathode are located at the isolation opening.

5. The display panel according to claim 4, wherein: The isolation structure comprises a support portion and a crown portion, wherein the crown portion is located at a side of the support portion away from the substrate, and an orthographic projection of an end of the support portion facing the crown portion on the substrate is located within an orthographic projection of the crown portion on the substrate; Preferably, the support portion is a conductive structure, and the cathode is electrically connected to the support portion; Preferably, the material of the support portion includes aluminum; Preferably, the material of the crown comprises titanium; Preferably, the isolation structure further comprises a supporting portion, which is arranged on a side of the support portion close to the substrate; the supporting portion is a conductive structure, and the cathode is electrically connected to the supporting portion; Preferably, the material of the supporting portion includes molybdenum.

6. The display panel according to claim 4, wherein: The display panel also includes a pixel defining layer, which is located between the isolation structure and the substrate. The pixel defining layer defines a plurality of pixel openings corresponding to the isolation openings respectively, and the pixel openings are connected to the corresponding isolation openings. 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 anodes and the edges of the anodes so that the pixel openings expose the anodes.

7. The display panel according to claim 1, wherein: The touch electrodes include a plurality of rows of first touch electrodes and a plurality of columns of second touch electrodes, wherein the first touch electrodes and the second touch electrodes are spaced apart from each other and intersect each other; Preferably, the display panel further comprises an encapsulation layer, and the encapsulation layer covers the light emitting unit and the isolation structure.

8. A method for preparing a display panel, characterized in that: include: An isolation structure is formed on one side of the substrate; wherein the isolation structure encloses an isolation opening and a light-transmitting opening, and the isolation opening is spaced apart from the light-transmitting opening; A touch electrode is formed on a side of the isolation structure facing away from the substrate; wherein the orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the isolation structure on the substrate.

9. The method for preparing a display panel according to claim 8, wherein: Before forming the isolation structure on one side of the substrate, the method further includes: forming an anode on one side of the substrate; Before forming the touch electrode on the side of the isolation structure away from the substrate, the method further includes: A light-emitting functional layer and a cathode are formed in the isolation opening; wherein the anode, the light-emitting functional layer and the cathode are stacked in sequence in a direction away from the substrate, and the anode, the light-emitting functional layer and the cathode constitute a light-emitting unit; Preferably, the touch electrode comprises a first annular structure and a second annular structure, the orthographic projection of the first annular structure on the substrate surrounds the orthographic projection of the isolation opening on the substrate, and the orthographic projection of the second annular structure on the substrate surrounds the orthographic projection of the light-transmitting opening on the substrate; Preferably, an annular gap is formed between the orthographic projection of the first annular structure on the substrate and the orthographic projection of the isolation opening on the substrate; Preferably, along the extension direction of the annular gap, the width of the annular gap remains unchanged; Preferably, the first annular structure comprises a curved segment; Preferably, the first annular structure further includes a straight line segment connected to the curved line segment.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 7.

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