Display panel, preparation method thereof and display device

Abstract

The invention relates to a display panel, a preparation method thereof and a display device. The display panel comprises an array substrate and an isolation structure layer, the isolation structure layer is arranged on one side of the array substrate, the isolation structure layer comprises isolation structures, and the isolation structures are arranged between at least part of the isolation structures; the touch electrode is arranged on one side of the array substrate and located in the isolation gap; and the shielding structure layer is at least partially located between the isolation structure and the touch electrode. When the display panel is adopted in the working process, electric signal noise of the isolation structure can be shielded through part of the shielding structure layer, interference of the electric signal noise on the touch electrodes is reduced, in this way, external interference on touch signals transmitted in the touch electrodes can be reduced, distortion of the touch signals is reduced, the signal-to-noise ratio of the touch signals is increased, and the touch quality of the display panel is improved. Therefore, the touch performance of the display panel is improved.

Description

Technical Field

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

[0002] As the industry's demand for display panel functions becomes higher and higher, the touch structure is integrated into the display panel to achieve touch display, that is, In-Cell touch panel is gradually developed. This type of display panel has the advantages of low production cost and thin thickness, so it is gradually promoted and applied.

[0003] In the related art, the touch screen (Touch Panel, TP) wiring is mainly designed in the In-Cell touch panel to realize the touch function. However, during the operation of such display panels in the related art, there is a problem of poor touch performance. Summary of the invention

[0004] Based on this, it is necessary to provide a display panel and a preparation method thereof, and a display device that can improve touch performance in order to address the above technical problems.

[0005] In a first aspect, an embodiment of the present application provides a display panel, including:

[0006] An array substrate;

[0007] An isolation structure layer is provided on one side of the array substrate, the isolation structure layer includes isolation structures, and isolation gaps are provided between at least some of the isolation structures;

[0008] The touch electrode is disposed on one side of the array substrate and is located in the isolation gap;

[0009] The shielding structure layer is at least partially located between the isolation structure and the touch electrode.

[0010] In one embodiment, the shielding structure layer includes a first shielding portion, and the first shielding portion covers at least a portion of a surface of the touch electrode facing the isolation structure.

[0011] In one of the embodiments, the first shielding portion includes a first main body portion, and the first main body portion covers at least a portion of a side wall of the touch electrode;

[0012] Optionally, the first shielding portion further includes a first extension portion connected to the first main body portion, the first extension portion is located on a side of the touch electrode away from the array substrate, and a side surface of the first extension portion close to the array substrate is spaced from a side surface of the touch electrode away from the array substrate.

[0013] In one embodiment, the first shielding portion also includes a second extension portion connected to the first main body portion, the second extension portion is connected to an end of the first main body portion close to the array substrate, and a side surface of the second extension portion close to the array substrate is spaced apart from a side surface of the array substrate close to the second extension portion.

[0014] In one embodiment, the shielding structure layer includes a second shielding portion, and the second shielding portion covers at least a portion of a surface of the isolation structure facing the touch electrode.

[0015] In one of the embodiments, the orthographic projection size of the second shielding portion on the array substrate is different from the orthographic projection size of the first shielding portion in the shielding structure layer on the array substrate.

[0016] In one of the embodiments, the orthographic projection size of the second shielding portion on the array substrate is smaller than the orthographic projection size of the first shielding portion on the array substrate.

[0017] In one embodiment, the second shielding portion includes a second main body portion, and the second main body portion covers at least a portion of a side wall of the isolation structure.

[0018] In one embodiment, the second shielding portion also includes a third extension portion connected to the second main body portion, the third extension portion is located on a side of the isolation structure away from the array substrate, and a side surface of the third extension portion close to the array substrate is spaced from a side surface of the isolation structure away from the array substrate.

[0019] In one embodiment, an end of the second main body portion facing the array substrate is spaced apart from a side surface of the isolation structure away from the array substrate.

[0020] In one embodiment, the isolation structure includes a first isolation layer and a second isolation layer, the first isolation layer is arranged on a side of the second isolation layer away from the array substrate; the orthographic projection of the first isolation layer on the array substrate is located within the orthographic projection of the second isolation layer on the array substrate.

[0021] In one embodiment, the material of the first isolation layer includes titanium or molybdenum; the material of the second isolation layer includes aluminum, silver or copper.

[0022] In one embodiment, the touch electrode includes a first electrode layer and a second electrode layer, the first electrode layer is arranged on a side of the second electrode layer away from the array substrate; the orthographic projection of the first electrode layer on the array substrate is located within the orthographic projection of the second electrode layer on the array substrate.

[0023] In one embodiment, the first isolation layer and the first electrode layer are provided in the same layer and with the same material.

[0024] In one embodiment, the second isolation layer and the second electrode layer are provided in the same layer and with the same material.

[0025] In one embodiment, the isolation structure further includes a third isolation layer, which is disposed on a side of the first isolation layer facing the array substrate; an orthographic projection of the first isolation layer on the array substrate is located within an orthographic projection of the third isolation layer on the array substrate.

[0026] In one embodiment, the material of the third isolation layer includes titanium or molybdenum.

[0027] In one embodiment, the touch electrode further includes a third electrode layer, which is disposed on a side of the first electrode layer facing the array substrate; an orthographic projection of the first electrode layer on the array substrate is within an orthographic projection of the third electrode layer on the array substrate.

[0028] In one embodiment, the third isolation layer and the third electrode layer are provided in the same layer and with the same material.

[0029] In one embodiment, the isolation structure encloses a plurality of isolation openings; the display panel further comprises a plurality of light emitting elements, the plurality of light emitting elements are arranged corresponding to the plurality of isolation openings, and at least a portion of the light emitting elements are arranged in the corresponding isolation openings.

[0030] Optionally, the light emitting element includes a first electrode, a light emitting functional portion and a second electrode which are sequentially stacked and arranged away from the array substrate, and the second electrode is electrically connected to the isolation structure.

[0031] In one embodiment, the display panel further includes a pixel defining layer; the isolation structure and the touch electrode are both located on a side of the pixel defining layer away from the array substrate;

[0032] The pixel defining layer is provided with a plurality of pixel openings; the pixel openings are connected with the isolation openings, a plurality of light emitting elements are provided corresponding to the plurality of pixel openings, and at least a part of the light emitting elements is provided in the corresponding pixel openings.

[0033] In one embodiment, the material of the shielding structure layer includes an inorganic material;

[0034] Optionally, the display panel further includes a packaging structure layer, the packaging structure layer includes a plurality of packaging units, the plurality of packaging units are arranged corresponding to the plurality of light emitting elements, and are arranged on a side of the plurality of light emitting elements away from the array substrate.

[0035] Optionally, the shielding structure layer and the plurality of packaging units are provided in the same layer and with the same material.

[0036] In a second aspect, an embodiment of the present application provides a display panel, comprising:

[0037] An array substrate;

[0038] An isolation structure layer is provided on one side of the array substrate, and the isolation structure layer includes an isolation structure and a touch electrode, wherein the isolation structure and the touch electrode are spaced apart;

[0039] The shielding structure layer is at least partially located between the isolation structure and the touch electrode.

[0040] The shielding structure layer includes a first shielding portion, and the first shielding portion covers at least a portion of a surface of the touch electrode facing the isolation structure.

[0041] In one embodiment, the first shielding portion includes a first main body portion, and the first main body portion covers at least a portion of a side wall of the touch electrode.

[0042] In one embodiment, the first shielding portion also includes a first extension portion connected to the first main body portion, the first extension portion is located on a side of the touch electrode away from the array substrate, and a side surface of the first extension portion close to the array substrate is spaced from a side surface of the touch electrode away from the array substrate.

[0043] In one embodiment, the first shielding portion also includes a second extension portion connected to the first main body portion, the second extension portion is connected to an end of the first main body portion close to the array substrate, and a side surface of the second extension portion close to the array substrate is spaced apart from a side surface of the array substrate close to the second extension portion.

[0044] In one embodiment, the shielding structure layer includes a second shielding portion, and the second shielding portion covers at least a portion of a surface of the isolation structure facing the touch electrode.

[0045] In one of the embodiments, the orthographic projection size of the second shielding portion on the array substrate is different from the orthographic projection size of the first shielding portion in the shielding structure layer on the array substrate.

[0046] In one of the embodiments, the orthographic projection size of the second shielding portion on the array substrate is smaller than the orthographic projection size of the first shielding portion on the array substrate.

[0047] In one embodiment, the second shielding portion includes a second main body portion, and the second main body portion covers at least a portion of a side wall of the isolation structure.

[0048] In one of the embodiments, the second shielding portion also includes a third extension portion connected to the second main body portion, the third extension portion is located on a side of the isolation structure away from the array substrate, and a side surface of the third extension portion close to the array substrate is spaced from a side surface of the isolation structure away from the array substrate.

[0049] In one embodiment, an end of the second main body portion facing the array substrate is spaced apart from a side surface of the isolation structure away from the array substrate.

[0050] In one embodiment, an isolation gap is disposed between at least some of the isolation structures, and the touch electrodes are located in the isolation gap.

[0051] In a third aspect, an embodiment of the present application provides a method for preparing a display panel, comprising:

[0052] Providing an array substrate;

[0053] An isolation structure and a touch electrode are formed on one side of the array substrate; an isolation gap is provided between at least a portion of the isolation structures, and the touch electrode is located in the isolation gap;

[0054] At least a portion of a shielding structure layer is formed between the isolation structure and the touch electrode.

[0055] In one embodiment, at least a portion of a shielding structure layer is formed between the isolation structure and the touch electrode, including:

[0056] forming a shielding structure layer on at least a portion of the surface of the isolation structure facing the touch electrode and / or at least a portion of the surface of the touch electrode facing the isolation structure;

[0057] In one embodiment, the material of the shielding structure layer includes an inorganic material;

[0058] In one embodiment, the isolation structure encloses a plurality of isolation openings; before the step of forming at least a portion of the shielding structure layer between the isolation structure and the touch electrode, the method further includes:

[0059] Forming a light-emitting function layer, a first electrode material layer and a packaging material layer on the entire surface of the isolation structure and the touch electrode away from the array substrate;

[0060] The light-emitting functional layer, the first electrode material layer and the packaging material layer are patterned to form a light-emitting element at the isolation opening, a packaging unit located on a side of the light-emitting element away from the array substrate, and a shielding structure layer.

[0061] In a third aspect, an embodiment of the present application provides a display device, comprising a display panel provided in the first aspect or the second aspect.

[0062] The above-mentioned display panel and its preparation method, and display device include an array substrate and an isolation structure layer, wherein the isolation structure layer is arranged on one side of the array substrate, the isolation structure layer includes an isolation structure, and an isolation gap is arranged between at least part of the isolation structure; the touch electrode is arranged on one side of the array substrate and is located in the isolation gap; and the shielding structure layer is at least partially located between the isolation structure and the touch electrode. When the above-mentioned display panel is used, the electrical signal noise of the isolation structure can be shielded by part of the shielding structure layer, and the interference of the electrical signal noise on the touch electrode can be reduced. In this way, the external interference of the touch signal transmitted in the touch electrode can be reduced, the distortion of the touch signal can be reduced, and the signal-to-noise ratio of the touch signal can be improved. On this basis, the touch system in the display panel can more accurately identify and process the touch signal, thereby improving the touch performance of the display panel. At the same time, the partial shielding structure layer can also reduce the interference of the electrical signal noise on the isolation structure, ensuring the signal transmission effect of the isolation structure, and thus improving the picture display quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For different technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0064] Figure 1 is a schematic diagram of a cross-sectional structure of a display panel in the related art;

[0065] Figure 2 A schematic diagram of a cross-sectional structure of a display panel provided by an embodiment;

[0066] Figure 3 is a schematic diagram of a partial enlarged cross-section structure of a display panel in one embodiment;

[0067] Figure 4 A schematic cross-sectional structure diagram of a display panel provided in another embodiment;

[0068] Figure 5 A schematic cross-sectional structure diagram of an isolation structure and a touch electrode provided in another embodiment;

[0069] Figure 6 is a schematic diagram of a partial enlarged cross-section structure of a display panel in another embodiment;

[0070] Figure 7 is a schematic diagram of a top view of a light emitting element, an isolation structure, an isolation gap and a touch electrode in a display panel in one embodiment;

[0071] Figure 8A schematic flow chart of steps of a method for preparing a display panel in one embodiment;

[0072] Fig. 9 is a schematic diagram of a partial enlarged cross-section structure of a display panel in another embodiment;

[0073] Fig.10 FIG. 1 is a schematic flow chart of steps of a method for preparing a display panel in another embodiment.

[0074] Description of reference numerals:

[0075] 1. Encapsulation layer; 2. Isolation column; 3. Touch screen wiring; 10. Display panel; 11. Array substrate; 111. Substrate; 12. Isolation structure layer; 121. Isolation structure; 121a. First isolation layer; 121b. Second isolation layer; 121c. Third isolation layer; 122. Isolation gap; 13. Touch electrode; 131. First electrode layer; 132. Second electrode layer; 133. Third electrode layer; 14. Shielding structure layer; 141. First shielding part; 141a, first main body; 141b, first extension part; 141c, second extension part; 142, second shielding part; 142a, second main body; 142b, third extension part; 123, isolation opening; 15, light-emitting element; 151, first electrode; 152, light-emitting functional part; 152a, light-emitting layer; 152b, functional layer; 153, second electrode; 16, pixel defining layer; 17, planarization layer; 18, packaging unit; 19, vapor-deposited film layer. DETAILED DESCRIPTION

[0076] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0078] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there can be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly below or there can be one or more light-emitting units. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there can be one or more light-emitting units.

[0079] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0080] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0081] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0082] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a cross section taken by vertically cutting the target portion is viewed from the side.

[0083] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0084] Organic Light-Emitting Diode (OLED) display devices have been listed as a display technology with great development prospects due to their advantages such as thinness, lightness, wide viewing angle, active light emission, continuously adjustable light emission color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high light emission efficiency and flexible display.

[0085] In the related OLED display technology, the touch structure is integrated into the display panel to realize touch display, that is, the In-Cell touch panel. This type of display panel has the advantages of low manufacturing cost and thin thickness, so it is gradually promoted and applied. In order to design the In-Cell touch panel, in the related technology, such as Figure 1 As shown, the display panel includes an encapsulation layer 1 and an isolation layer, an isolation column 2 and an isolation gap are arranged on the isolation layer, and a touch screen trace (TP) 3 is arranged in the isolation gap to realize the touch function. However, this type of display panel has a problem of poor touch performance during operation.

[0086] After research, the applicant found that the cause of the above problem is that the electrode noise has a greater impact during the operation of the display panel, and it is impossible to completely filter the noise in the later debugging stage, resulting in a low touch signal-to-noise ratio and poor touch performance of the display panel.

[0087] In view of this, the embodiment of the present application provides a display panel and a method for preparing the same, and a display device. The display panel includes an array substrate and an isolation structure layer, the isolation structure layer is arranged on one side of the array substrate, the isolation structure layer includes an isolation structure and an isolation gap, and the isolation structure is connected to a fixed potential; the touch electrode is arranged on one side of the array substrate and is located in the isolation gap; the shielding structure layer is at least partially located between the isolation structure and the touch electrode. In the display panel provided by the present application, a partial shielding structure layer is arranged between the isolation structure and the touch electrode, so that during operation, the display panel can shield the electrode noise through the partial shielding structure layer, and reduce the interference of the electrode noise on the touch electrode, so that the external interference of the touch signal transmitted in the touch electrode (i.e., TP wiring) can be reduced, the distortion of the touch signal can be reduced, and the signal-to-noise ratio of the touch signal can be improved. On this basis, the touch system in the display panel can more accurately identify and process the touch signal, thereby improving the touch performance of the display panel. At the same time, the partial shielding structure layer can also reduce the interference of the electrode noise on the isolation structure, improve the isolation effect of the isolation structure, and thus improve the luminous performance of the luminous functional part in the display panel.

[0088] Based on the above technical problems, the present application provides a display panel and a method for manufacturing the same, and a display device to improve the touch performance of the display panel. The composition, preparation, etc. of the isolation structure mentioned below are described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, Further description is provided in CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A for reference.

[0089] See also Figure 2 The embodiment of the present application provides a display panel 10 including: an array substrate 11, an isolation structure layer 12, a touch electrode 13 and a shielding structure layer 14; the isolation structure layer 12 is arranged on one side of the array substrate 11, the isolation structure layer 12 includes an isolation structure 121, and an isolation gap 122 is provided between at least part of the isolation structure 121; the touch electrode 13 is arranged on one side of the array substrate 11 and is located in the isolation gap 122; the shielding structure layer 14 is at least partially located between the isolation structure 121 and the touch electrode 13.

[0090] Specifically, the display panel 10 may be an organic light emitting diode display panel (Organic Light Emitting Diode, OLED for short), a quantum dot electroluminescent display panel (Quantum Dot Light Emitting Diodes, QLED for short), or the like.

[0091] The array substrate 11 may be a substrate of an inorganic material, or a substrate of an organic material, or a composite substrate formed by stacking a substrate of an inorganic material and a substrate of an organic material. The array substrate 11 may include a substrate 111 and a driving circuit layer (not shown in the figure) disposed on a side close to the touch electrode 13, wherein the driving circuit layer includes a pixel driving circuit, and the pixel driving circuit includes a thin film transistor. The substrate 111 may be a rigid substrate or a flexible substrate. When the substrate 111 is a rigid substrate, the material of the substrate 111 may be glass or a silicon wafer, etc.; when the substrate 111 is a flexible substrate, the material of the substrate 111 may be polyimide.

[0092] The isolation structure layer 12 refers to a functional layer that can isolate adjacent light-emitting elements 15. The isolation structure layer 12 includes an isolation structure 121 and a plurality of isolation gaps 122 opened on the isolation structure 121; the isolation structure 121 can be understood as a porous structure. The material of the isolation structure 121 includes a conductive material, which can be connected to a fixed potential for transmitting electrical signals.

[0093] It is understandable that the touch electrodes 13 in the display panel 10 are used to transmit the touch signal on the touch panel to the touch control system in the display panel 10 , thereby ensuring the normal operation of the touch control function of the display panel 10 . The touch electrodes 13 are disposed in the same layer as the isolation structure 121 .

[0094] In practical applications, the display panel 10 also includes various touch sensors (such as capacitive sensors, resistive sensors, etc.), and the touch electrodes 13 can be connected with various touch sensors on the touch panel to form a complete touch detection system to realize the touch function of the display panel 10. The material of the touch electrodes 13 can include a low-resistance conductive material to improve the signal transmission efficiency and signal transmission stability of the touch electrodes 13.

[0095] It should be noted that the display panel 10 may include a plurality of touch electrodes 13, and a touch electrode 13 may be disposed in each isolation gap 122 on the isolation structure 121; a touch electrode 13 may also be disposed in part of the isolation gaps 122; or a plurality of touch electrodes 13 may be disposed in the isolation gaps 122, and the plurality of touch electrodes 13 may be insulated from each other. It is understood that after forming the isolation structure material layer on the array substrate 11, the isolation structure material layer is patterned to form the isolation structure 121 and the touch electrodes 13 in the isolation gaps 122 of the isolation structure 121.

[0096] At least part of the shielding structure layer 14 in the display panel 10 is located between the isolation structure 121 and the touch electrode 13, that is, part of the shielding structure layer 14 can be arranged on the side wall of the isolation structure 121 facing the touch electrode 13, and can also be arranged on the side wall and surface of the isolation structure 121 facing the touch electrode 13, so as to achieve the effect of shielding the electrical signal. At the same time, part of the shielding structure layer 14 can also be arranged on the side wall of the touch electrode 13, and can also be arranged on the side wall and surface of the touch electrode 13.

[0097] The technical solution in the embodiment of the present application includes an array substrate 11 and an isolation structure layer 12. The isolation structure layer 12 is arranged on one side of the array substrate 11. The isolation structure layer 12 includes an isolation structure 121, and an isolation gap 122 is provided between at least part of the isolation structure 121; the touch electrode 13 is arranged on one side of the array substrate 11 and is located in the isolation gap 122; the shielding structure layer 14 is at least partially located between the isolation structure 121 and the touch electrode 13. When the display panel 10 is used in operation, the electrical signal noise of the isolation structure can be shielded by the partial shielding structure layer 14, thereby reducing the interference of the electrical signal noise on the touch electrode 13. In this way, the external interference of the touch signal transmitted in the touch electrode 13 can be reduced, the distortion of the touch signal can be reduced, and the signal-to-noise ratio of the touch signal can be improved. On this basis, the touch system in the display panel 10 can more accurately identify and process the touch signal, thereby improving the touch performance of the display panel 10. At the same time, the partial shielding structure layer 14 can also reduce the interference of the electrical signal noise on the isolation structure, thereby ensuring the signal transmission effect of the isolation structure, and further improving the picture display quality of the display panel 10.

[0098] In one embodiment, the isolation structure 121 transmits cathode signals. In this way, the partial shielding structure layer 14 can shield the electrode noise and reduce the interference of the electrode noise on the touch electrode 13, which can reduce the external interference of the touch electrode 13 in the process of transmitting the touch signal, reduce the distortion of the touch signal, and improve the signal-to-noise ratio of the touch signal. On this basis, the touch system in the display panel 10 can more accurately identify and process the touch signal, thereby improving the touch performance of the display panel 10. At the same time, the partial shielding structure layer 14 can also reduce the interference of the electrode noise on the isolation structure 121, and improve the cathode signal transmission effect of the isolation structure 121.

[0099] In one embodiment, Figure 2 As shown, the shielding structure layer 14 in the display panel 10 covers at least a portion of the surface of the isolation structure 121 facing the touch electrode 13 and / or at least a portion of the surface of the touch electrode 13 facing the isolation structure 121 .

[0100] In one embodiment, the material of the shielding structure layer 14 includes inorganic materials.

[0101] Among them, at least a portion of the surface of the isolation structure 121 facing the touch electrode 13, that is, at least a portion of the side surface (that is, the side wall) of the isolation structure 121 facing the touch electrode 13, or at least a portion of the side wall and at least a portion of the upper surface of the isolation structure 121 facing the touch electrode 13.

[0102] Continue to see Figure 2As shown, the isolation structure 121 in the display panel 10 includes a first isolation layer 121a and a second isolation layer 121b. At least part of the surface of the isolation structure 121 facing the touch electrode 13, that is, at least part of the side wall of the second isolation layer 121b and / or the first isolation layer 121a facing the touch electrode 13, or at least part of the upper surface of the second isolation layer 121b close to the touch electrode 13 and at least part of the side wall of the second isolation layer 121b and / or the first isolation layer 121a facing the touch electrode 13, or at least part of the upper surface and lower surface of the second isolation layer 121b close to the touch electrode 13, and at least part of the side wall of the second isolation layer 121b and / or the first isolation layer 121a facing the touch electrode 13. Part of the lower surface of the second isolation layer 121b is connected to the first isolation layer 121a.

[0103] At least part of the surface of the touch electrode 13 facing the isolation structure 121 , that is, at least part of the side surface of the touch electrode 13 close to the isolation structure 121 , or also includes at least part of the upper surface of the touch electrode 13 close to the isolation structure 121 .

[0104] Continue to see Figure 2 As shown, the touch electrode 13 in the display panel 10 includes a first electrode layer 131 and a second electrode layer 132. At least part of the surface of the touch electrode 13 facing the isolation structure 121, that is, at least part of the side wall of the first electrode layer 131 and / or the second electrode layer 132 facing the isolation structure 121, or at least part of the upper surface of the second electrode layer 132 close to the isolation structure 121 and at least part of the side wall of the first electrode layer 131 and / or the second electrode layer 132 facing the isolation structure 121, or at least part of the upper surface and lower surface of the second electrode layer 132 close to the isolation structure 121 and at least part of the side wall of the first electrode layer 131 and / or the second electrode layer 132 facing the isolation structure 121.

[0105] At the same time, the shielding structure layer 14 in the display panel 10 is made of an inorganic material, so that the shielding structure layer 14 not only has good conductivity, but also can provide effective electrical signal shielding in a wide frequency range. The inorganic material can be silicon nitride, silicon oxide, silicon oxynitride, etc., so that the shielding structure layer 14 can effectively block and electrical signals, reduce interference from external electrical signal fields, and improve the stability of the display panel 10 and the quality of the output image.

[0106] The technical solution in the embodiments of the present application is to set a shielding structure layer 14 on at least a portion of the surface of the isolation structure 121 facing the touch electrode 13 and / or at least a portion of the surface of the touch electrode 13 facing the isolation structure 121, both of which can play a role in shielding the interference of electrode noise in the light-emitting element 15. In practical applications, the shielding structure layer 14 can be set at the corresponding position according to actual needs to achieve the target shielding effect.

[0107] In one embodiment, continue to see Figure 2 The shielding structure layer 14 includes a first shielding portion 141 , and the first shielding portion 141 covers at least a portion of the surface of the touch electrode 13 facing the isolation structure 121 .

[0108] The first shielding portion 141 is made of an organic material or an inorganic material. The inorganic material may be silicon nitride, silicon oxide, silicon oxynitride, etc., which can enable the first shielding portion 141 to have better shielding performance.

[0109] The first shielding portion 141 is arranged on at least a portion of the surface of the touch electrode 13 facing the isolation structure 121, that is, the first shielding portion 141 is arranged on at least a portion of the side wall of the touch electrode 13 facing the isolation structure 121, or also includes the first shielding portion 141 being arranged on at least a portion of the upper surface of the touch electrode 13 close to the isolation structure 121.

[0110] According to the technical solution in the embodiment of the present application, the shielding structure layer 14 includes a first shielding portion 141, and the first shielding portion 141 covers at least a portion of the surface of the touch electrode 13 facing the isolation structure 121. When the display panel 10 is used in operation, the interference of the electrode noise in the light-emitting element 15 on the touch electrode 13 can be shielded by the first shielding portion 141, thereby reducing the external interference on the touch signal transmitted in the touch electrode 13, reducing the distortion of the touch signal, and improving the signal-to-noise ratio of the touch signal. On this basis, the touch system in the display panel 10 can more accurately identify and process the touch signal, thereby improving the touch performance of the display panel 10.

[0111] In one embodiment, if Figure 3As shown, the first shielding portion 141 includes a first main body portion 141a, and the first main body portion 141a covers at least part of the side wall of the touch electrode 13; the first shielding portion 141 also includes a first extension portion 141b connected to the first main body portion 141a, and the first extension portion 141b is located on a side of the touch electrode 13 away from the array substrate 11, and a side surface of the first extension portion 141b close to the array substrate 11 is spaced from a side surface of the touch electrode 13 away from the array substrate 11. Further, the first shielding portion 141 also includes a second extension portion 141c connected to the first main body portion 141a, and the second extension portion 141c is connected to an end of the first main body portion 141a close to the array substrate 11, and a side surface of the second extension portion 141c close to the array substrate 11 is spaced from a side surface of the array substrate 11 close to the second extension portion 141c.

[0112] In a specific embodiment, the first main body portion 141a covers at least a portion of the side wall of the touch electrode 13, which means that the first main body portion 141a covers a portion of the side wall of the first electrode layer 131 in the touch electrode 13 facing the isolation structure 121, the side wall of the second electrode layer 132 facing the isolation structure 121, and a portion of the surface of the second electrode layer 132 facing the side of the array substrate 111.

[0113] The first extension portion 141b is disposed on a side of the second electrode layer 132 of the touch electrode 13 away from the array substrate 11. A surface of the first extension portion 141b close to the array substrate 11 is spaced from a surface of the second electrode layer 132 of the touch electrode 13 away from the array substrate 11.

[0114] It is understandable that an organic material may be filled between the first extension portion 141b and the second electrode layer 132. This is beneficial to increase the contact area between the first shielding portion 141 and other film layers in the display panel 10, and further improve the connection stability of the first shielding portion 141. Fig. 9 shown.

[0115] The second extension portion 141c is connected to an end of the first main body portion 141a away from the first extension portion 141b, and covers part of the isolation gap 122 between the isolation structure 121 and the touch electrode 13. This is beneficial to increase the area of ​​the first shielding portion 141 and improve the shielding effect of the first shielding portion 141.

[0116] According to the technical solution in the embodiment of the present application, the first shielding part 141 includes a first main body 141a, covering at least part of the side wall of the touch electrode 13; the first shielding part 141 also includes a first extension part 141b connected to the first main body 141a, covering the side of the touch electrode 13 away from the array substrate 11, and the side surface of the first extension part 141b facing the array substrate 11 is spaced from the side surface of the touch electrode 13 away from the array substrate 11; the first shielding part 141 also includes a second extension part 141c connected to the first main body 141a, the second extension part 141c is connected to one end of the first main body 141a away from the first extension part 141b, and the side surface of the second extension part 141c facing the array substrate 11 is spaced from the side surface of the touch electrode 13 away from the array substrate 11. The first shielding portion 141 may cover at least a portion of the side wall of the touch electrode 13 and at least a portion of the surface on the side close to the isolation structure 121, thereby increasing the shielding area of ​​the touch electrode 13, thereby greatly reducing the interference of the electrode noise on the touch electrode 13, and improving the signal transmission quality of the touch electrode 13, that is, improving the signal-to-noise ratio of the touch signal, thereby improving the touch performance of the display panel 10.

[0117] In one of the embodiments, the shielding structure layer 14 includes a second shielding portion 142, which covers at least a portion of the surface of the isolation structure 121 facing the touch electrode 13; the orthographic projection size of the second shielding portion 142 on the array substrate 11 is different from the orthographic projection size of the first shielding portion 141 on the array substrate 11; the orthographic projection size of the second shielding portion 142 on the array substrate 11 is smaller than the orthographic projection size of the first shielding portion 141 on the array substrate 11.

[0118] Specifically, the second shielding portion 142 is made of an organic material or an inorganic material. The inorganic material may be silicon nitride, silicon oxide, silicon oxynitride, etc., which can enable the first shielding portion 141 to have better shielding performance.

[0119] In a specific embodiment, the second shielding portion 142 is arranged on at least a portion of the surface of the isolation structure 121 facing the touch electrode 13, that is, the second shielding portion 142 is arranged on at least a portion of the side wall of the isolation structure 121 facing the touch electrode 13, or also includes the second shielding portion 142 being arranged on at least a portion of the upper surface of the isolation structure 121 close to the touch electrode 13.

[0120] The orthographic projection size of the second shielding portion 142 on the array substrate 11 is different from the orthographic projection size of the first shielding portion 141 on the array substrate 11. Optionally, the orthographic projection size of the second shielding portion 142 on the array substrate 11 may be smaller than the orthographic projection size of the first shielding portion 141 on the array substrate 11. It should be noted here that the orthographic projection size of the second shielding portion 142 on the array substrate 11 can be understood as the size of the area covered by the second shielding portion 142 on the plane of the array substrate 11; the orthographic projection size of the first shielding portion 141 on the array substrate 11 can be understood as the size of the area covered by the first shielding portion 141 on the plane of the array substrate 11.

[0121] In practical applications, the size of the second shielding portion 142 in the second direction may be the same as or different from the size of the first shielding portion 141 in the second direction, and the second direction is perpendicular to the thickness direction of the array substrate 11. In addition, the size of the second shielding portion 142 in the second direction may be the same as or different from the size of the first shielding portion 141 in the second direction. Figure 4 As shown, the size of the second shielding portion 142 in the second direction can be understood as the height of the second shielding portion 142. The size of the first shielding portion 141 in the second direction can be understood as the height of the first shielding portion 141. Figure 4 As shown, the first direction is the X direction, and the second direction is the Y direction.

[0122] According to the technical solution in the embodiment of the present application, the shielding structure layer 14 includes a second shielding portion 142, and the second shielding portion 142 covers at least a portion of the surface of the isolation structure 121 facing the touch electrode 13. When the above-mentioned display panel 10 is used in operation, the interference of the electrode noise on the isolation structure 121 can be reduced through the second shielding portion 142, thereby improving the isolation effect of the isolation structure 121, thereby improving the light-emitting performance of the light-emitting functional part in the display panel 10.

[0123] In one embodiment, if Figure 4 As shown, the second shielding portion 142 includes a second main body portion 142a, covering at least a portion of the side wall of the isolation structure 121; the second shielding portion 142 also includes a third extension portion 142b connected to the second main body portion 142a, the third extension portion 142b is located on the side of the isolation structure 121 away from the array substrate 11, and a side surface of the third extension portion 142b facing the array substrate 11 is spaced from a side surface of the isolation structure 121 away from the array substrate 11; an end of the second main body portion 142b facing the array substrate 11 is spaced from a side surface of the isolation structure 121 away from the array substrate 11.

[0124] In a specific embodiment, the second main body portion 142a covers at least a portion of the side wall of the isolation electrode, which means that the second main body portion 142a covers a portion of the side wall of the first isolation layer 121a in the isolation structure 121, the side wall of the second isolation layer 121b facing the touch electrode 13, and at least a portion of the surface of the second isolation layer 121b close to the touch electrode 13.

[0125] The third extension portion 142b is disposed on a side of the second isolation layer 121b in the isolation structure 121 away from the array substrate 11. A side surface of the third extension portion 142b close to the array substrate 11 is spaced from a side surface of the second isolation layer 121b in the isolation structure 121 away from the array substrate 11.

[0126] In the technical solution of the embodiment of the present application, the second shielding part 142 includes a second main body 142a, which covers at least part of the side wall of the isolation structure 121; the second shielding part 142 also includes a third extension part 142b connected to the second main body 142a, the third extension part 142b is located on the side of the isolation structure 121 away from the array substrate 11, and the side surface of the third extension part 142b close to the array substrate 11 is spaced from the side surface of the isolation structure 121 away from the array substrate 11; one end of the second main body 142b facing the array substrate 11 is spaced from the side surface of the isolation structure 121 away from the array substrate 11. The above-mentioned second shielding part 142 can cover at least part of the side wall of the isolation structure 121 and at least part of the side surface close to the touch electrode 13, so that the shielding area of ​​the isolation structure 121 can be increased, thereby greatly reducing the interference of the electrode noise on the isolation structure 121, improving the isolation effect of the isolation structure 121, and thus improving the light-emitting performance of the light-emitting functional part in the display panel 10.

[0127] In one embodiment, see Figure 4 As shown, the isolation structure 121 includes a first isolation layer 121a and a second isolation layer 121b. The first isolation layer 121a is arranged on the side of the second isolation layer 121b away from the array substrate 11; the orthographic projection of the first isolation layer 121a on the array substrate 11 is located within the orthographic projection of the second isolation layer 121b on the array substrate 11.

[0128] The first isolation layer 121a and the second isolation layer 121b in the isolation structure 121 may form an undercut structure with a "large top and small bottom". In this way, the adjacent light-emitting elements 15 may be isolated during the evaporation process, thereby avoiding crosstalk between light-emitting elements 15 of different colors, thereby improving the display effect of the display panel 10.

[0129] In an optional embodiment, the material of the first isolation layer 121a includes titanium or molybdenum; the material of the second isolation layer 121b includes aluminum, silver or copper.

[0130] In one embodiment, the touch electrode 13 includes a first electrode layer 131 and a second electrode layer 132, the first electrode layer 131 is arranged on the side of the second electrode layer 132 away from the array substrate 11; the orthographic projection of the first electrode layer 131 on the array substrate is located within the orthographic projection of the second electrode layer 132 on the array substrate.

[0131] The first electrode layer 131 and the second electrode layer 132 in the touch electrode 13 may form an undercut structure with a “large upper portion and small lower portion”, thereby improving the display effect of the display panel 10 .

[0132] Optionally, both the first electrode layer 131 and the second electrode layer 132 may be made of metal materials, and the second isolation layer 121 b and the second electrode layer 132 may be prepared by the same process.

[0133] It should be noted that the first isolation layer 121a has a conductive and supporting function for the second isolation layer 121b. Optionally, the size of the first isolation layer 121a in the thickness direction may be greater than the size of the second isolation layer 121b in the thickness direction.

[0134] At the same time, the first electrode layer 131 has a conductive and supporting function for the second electrode layer 132. Optionally, the size of the first electrode layer 131 in the thickness direction may be greater than the size of the second electrode layer 132 in the thickness direction.

[0135] The size of the first isolation layer 121a in the thickness direction is the same as that of the first electrode layer 131 in the thickness direction; the size of the second isolation layer 121b in the thickness direction is the same as that of the second electrode layer 132 in the thickness direction.

[0136] In this embodiment, the first isolation layer 121a and the first electrode layer 131 can be prepared by the same process, and the manufacturing process of the display panel 10 is simple and easy to implement. Optionally, the first isolation layer 121a and the second isolation layer 121b can be made of metal materials.

[0137] In an optional embodiment, the first isolation layer 121 a and the first electrode layer 131 are provided in the same layer and with the same material.

[0138] In an optional embodiment, the second isolation layer 121 b and the second electrode layer 132 are provided in the same layer and with the same material.

[0139] In one embodiment, if Figure 5As shown, the above-mentioned isolation structure 121 also includes a third isolation layer 121c, which is arranged on the side of the first isolation layer 121b facing the array substrate 11; the orthographic projection of the first isolation layer 121b on the array substrate 11 is located within the orthographic projection of the third isolation layer 121c on the array substrate 11.

[0140] The first isolation layer 121 a , the second isolation layer 121 b and the third isolation layer 121 c in the isolation structure 121 may form an “I-shaped” structure.

[0141] In an optional embodiment, the material of the third isolation layer 121c includes titanium or molybdenum.

[0142] In one embodiment, see Figure 5 As shown, the touch electrode 13 also includes a third electrode layer 133 , which is disposed on the side of the first electrode layer 132 facing the array substrate 11 ; the orthographic projection of the first electrode layer 132 on the array substrate 11 is located within the orthographic projection of the third electrode layer 133 on the array substrate 11 .

[0143] It should be noted that the third electrode layer 133 has conductive and supporting functions. Optionally, the size of the third electrode layer 133 in the first direction may be greater than the size of the first electrode layer 131 in the first direction.

[0144] The dimension of the third isolation layer 121 c in the thickness direction is the same as the dimension of the third electrode layer 133 in the thickness direction.

[0145] In this embodiment, the third isolation layer 121c and the third electrode layer 133 can be prepared by the same process, and the manufacturing process of the display panel 10 is simple and easy to implement. Optionally, the third isolation layer 121c and the third electrode layer 133 can be made of metal materials.

[0146] In an optional embodiment, the third isolation layer 121 c and the third electrode layer 133 are provided in the same layer and with the same material.

[0147] In one embodiment, see Figure 4 As shown, the isolation structure layer 12 also includes: a plurality of isolation openings 123 enclosed by the isolation structure 121; the display panel 10 also includes a plurality of light-emitting elements 15, and the plurality of light-emitting elements 15 are arranged corresponding to the plurality of isolation openings 123, and at least part of the light-emitting elements 15 are arranged between the corresponding isolation openings 123.

[0148] In an optional embodiment, if Figure 6As shown, the light emitting element 15 includes a first electrode 151 , a light emitting functional portion 152 , and a second electrode 153 which are sequentially stacked away from the array substrate 11 , and the second electrode 153 is electrically connected to the isolation structure 121 .

[0149] Among them, the first electrode 151 can be an anode, and the second electrode 153 can be a cathode. It can be understood that the light-emitting functional part 152 includes at least a light-emitting layer 152a (Emission layer, EML), and further, a functional layer 152b, which can include at least one of a hole injection layer (HIL), a hole transport layer (HTL) and an electron blocking layer (EBL). It can be understood that it can also include at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL). Alternatively, the light-emitting functional part 152 can also be a stacked light-emitting layer 152a, that is, it includes at least two light-emitting layers 152a and a charge generation layer (CGL) located between each adjacent light-emitting layer 152a.

[0150] In this embodiment, adjacent light-emitting functional parts 152 can be separated by the isolation structure 121, so as to avoid crosstalk between adjacent light-emitting functional parts 152 and improve the display effect of the display panel 10. In addition, the isolation structure layer 12 is provided with an isolation structure 121 and a plurality of isolation openings 123 formed by the isolation structure 121, and the light-emitting functional parts 152 can be prepared by a material patterning lithography process, thereby eliminating the need to use FMM and improving the pixel aperture ratio.

[0151] In one embodiment, see Figure 6 As shown, the display panel 10 further includes a pixel defining layer 16; the isolation structure 121 and the touch electrode 13 are both located on a side of the pixel defining layer 16 away from the array substrate 11;

[0152] The pixel defining layer 16 is provided with a plurality of pixel openings; the plurality of pixel openings are connected to the isolation opening 123 , the plurality of light emitting elements 15 are provided corresponding to the plurality of pixel openings, and at least a portion of the light emitting elements 15 is provided in the corresponding pixel openings.

[0153] Among them, a plurality of pixel openings are provided on the pixel defining layer 16 in the array substrate 11, a plurality of isolation openings 123 are arranged correspondingly to the plurality of pixel openings, and a plurality of light emitting elements 15 are arranged correspondingly to the plurality of pixel openings, and the light emitting elements 15 correspond one to one with the pixel openings.

[0154] Meanwhile, the display panel 10 further includes a planarization layer 17 , which is disposed between the array substrate 11 and the pixel defining layer 16 .

[0155] In an optional embodiment, the material of the shielding structure layer includes inorganic material.

[0156] In one embodiment, see Figure 6 As shown, the display panel 10 further includes a packaging structure layer, which includes a plurality of packaging units 18 . The plurality of packaging units 18 are arranged corresponding to the plurality of light emitting elements 15 and are arranged on a side of the corresponding light emitting element 15 away from the array substrate 11 .

[0157] In an optional embodiment, the shielding structure layer 14 and the plurality of packaging units 18 are provided in the same layer and with the same material.

[0158] Specifically, each packaging unit 18 corresponds to a corresponding light-emitting element 15 one by one, and a plurality of packaging units 18 cover a surface of a side of the corresponding light-emitting element 15 away from the array substrate 11 and at least a portion of a surface of a side of the isolation structure 121 close to the corresponding light-emitting element 15. In this way, the plurality of packaging units 18 can effectively reduce the impact of external impact on the internal components of the display panel 10, reduce the probability of the display panel 10 having a rupture, disconnection, and other faults, and can effectively isolate the external environment, that is, avoid the interference of water vapor on the light-emitting element 15, ensure that the internal components of the display panel 10 are always in a dry and clean environment, prevent the probability of damage to the internal components, and increase the service life of the display panel 10.

[0159] The isolation structure 121 is close to at least a portion of the surface of the side of the corresponding light-emitting element 15, that is, the isolation structure 121 is close to at least a portion of the side wall of the side of the corresponding light-emitting element 15, or the isolation structure 121 is close to at least a portion of the surface of the side of the corresponding light-emitting element 15, or the isolation structure 121 is close to at least a portion of the side wall of the side of the corresponding light-emitting element 15 and at least a portion of the surface of the side of the isolation structure 121 is close to the corresponding light-emitting element 15.

[0160] In an optional embodiment, the planar distribution diagram of the display panel 10 is as follows: Figure 7 As shown, the isolation structure layer 12 in the display panel 10 is distributed in a grid shape.

[0161] In one embodiment of the present application, a display panel 10 is provided. Figure 4 As shown, the display panel 10 includes:

[0162] An array substrate 11;

[0163] The isolation structure layer 12 is disposed on one side of the array substrate 11, and the isolation structure layer 12 includes an isolation structure 121 and a touch electrode 13; wherein the isolation structure 121 and the touch electrode 13 are spaced apart;

[0164] The shielding structure layer 14 is at least partially located between the isolation structure 121 and the touch electrode 13 .

[0165] In one embodiment, an isolation gap 122 is defined between at least a portion of the isolation structures 121 , and the touch electrodes 13 are located in the isolation gap 122 .

[0166] The specific design of the shielding structure layer 14 can refer to the description in the above embodiments, which will not be repeated here. Figure 8 One embodiment of the present application provides a method for preparing a display panel 10, the method comprising:

[0167] S100 , providing an array substrate 11 .

[0168] S200, forming an isolation structure layer 12 and touch electrodes 13 on one side of the array substrate 11; the isolation structure layer 12 includes an isolation structure 121 and a touch electrode 13; an isolation gap 122 is provided between at least part of the isolation structures 121, and the touch electrode 13 is located in the isolation gap 122.

[0169] S300 , forming at least a portion of the shielding structure layer 14 between the isolation structure 121 and the touch electrode 13 .

[0170] The isolation structure layer 12 is a structure that can isolate adjacent light emitting elements 15. The isolation structure layer 12 includes an isolation structure 121 and touch electrodes 13, and at least some of the isolation structures 121 are provided with an isolation gap 122. The isolation structure 121 in the isolation structure layer 12 is used to connect a fixed potential.

[0171] The shielding structure layer 14 refers to a structure that can shield interference from external electrical signals, that is, it is used to shield interference generated by electrode noise in the light-emitting element 15 , and protects the touch electrode 13 and the isolation structure 121 .

[0172] For the description of the specific structures of the formed isolation structure 121 , the touch electrode 13 and the shielding structure layer 14 , reference may be made to the specific description in the above embodiments, which will not be repeated here.

[0173] The method for preparing the display panel 10 provided in this embodiment forms an isolation structure layer 12 and a touch electrode 13 on one side of an array substrate 11, and forms at least a partial shielding structure layer 14 between the isolation structure 121 and the touch electrode 13. The isolation structure layer 12 includes an isolation structure 121 and an isolation gap 122. The isolation structure 121 is connected to a fixed potential, and the touch electrode 13 is located in the isolation gap 122. During operation, the display panel 10 prepared by the preparation method of the display panel 10 provided in this embodiment can shield the electrode noise through the partial shielding structure layer 14, thereby reducing the interference of the electrode noise on the touch electrode 13. In this way, the external interference of the touch signal transmitted in the touch electrode 13 can be reduced, the distortion of the touch signal can be reduced, and the signal-to-noise ratio of the touch signal can be improved. On this basis, the touch system in the display panel 10 can more accurately identify and process the touch signal, thereby improving the touch performance of the display panel 10. At the same time, the partial shielding structure layer 14 can also reduce the interference of the electrode noise on the isolation structure 121, enhance the isolation effect of the isolation structure 121, thereby improving the luminous performance of the luminous functional part 152 in the display panel 10.

[0174] In one embodiment, the step of forming at least a portion of the shielding structure layer 14 between the isolation structure 121 and the touch electrode 13 in the above S300 may include: forming a shielding structure layer 14 on at least a portion of the surface of the isolation structure 121 facing the touch electrode 13 and / or on at least a portion of the surface of the touch electrode 13 facing the isolation structure 121; wherein the material of the shielding structure layer 14 includes an inorganic material.

[0175] It should be noted that when preparing different types of display panels 10, the process of forming at least part of the shielding structure layer 14 may be the same or different due to different design requirements and preparation processes of different display panels 10. In the process of forming at least part of the shielding structure layer 14, the coverage of at least part of the shielding structure layer 14 can be flexibly designed according to actual shielding requirements, and can be large or small.

[0176] For the description of forming at least a portion of the isolation structure layer 12 , reference may be made to the specific description in the above embodiment, which will not be repeated here.

[0177] It should be noted that in the process of preparing the display panel using the process flow, after the multiple light-emitting elements are manufactured, such as Fig. 9 As shown, a vapor-deposited film layer 19 (including a light-emitting layer, a functional layer and an electrode layer, such as a cathode layer, etc.) may exist on the surface of the second electrode layer 132 in the touch electrode 13 away from the array substrate 11. Furthermore, a shielding structure layer 14 may be covered on the surface of the vapor-deposited film layer 19 away from the array substrate 11.

[0178] Afterwards, the shielding structure layer 14 covering the side of the second electrode layer 132 away from the array substrate 11 can be removed first, and then the evaporated film layer 19 covering the surface of the side of the second electrode layer 132 away from the array substrate 11 can be removed. Figure 4 As shown. In this way, the metal impedance of the touch electrode 13 can be reduced, and the obstacles to the transmission of the touch signal in the touch electrode can be reduced, thereby improving the touch sensitivity of the display panel 10. Of course, in other embodiments, the evaporated film layer 19 can be retained in subsequent products.

[0179] The method for preparing the display panel 10 provided in the present embodiment forms a shielding structure layer 14 on at least a portion of the surface of the isolation structure 121 facing the touch electrode 13 and / or on at least a portion of the surface of the touch electrode 13 facing the isolation structure 121, so that during the preparation process of the display panel 10, the coverage position and range of the shielding structure layer 14 can be flexibly designed according to actual shielding requirements, thereby enhancing the electrical signal interference shielding effect of the display panel 10, thereby improving the display effect of the display panel 10 and improving the practicability and reliability of the preparation method.

[0180] In one embodiment, the isolation structure 121 encloses a plurality of isolation openings 123; before performing the step of forming at least a portion of the shielding structure layer 14 between the isolation structure 121 and the touch electrode 13 in S300, as Fig.10 As shown, the above method also includes the following steps:

[0181] S400 , forming a light-emitting function layer, a second electrode material layer and a packaging material layer on the entire surface of the isolation structure 121 and the touch electrode 13 away from the array substrate 11 .

[0182] Specifically, a light-emitting functional layer, a second electrode material layer and a packaging material layer may be sequentially formed on the entire surface of the isolation structure 121 and the touch electrode 13 away from the array substrate 11. The light-emitting functional layer may be made of an inorganic light-emitting material, an organic light-emitting material or a mixture of the two. Optionally, the second electrode material layer may be made of a transparent conductive material, a metal material, etc. At the same time, the packaging material layer may be an inorganic material.

[0183] S500 , patterning the light-emitting function layer, the second electrode material layer and the packaging material layer to form a light-emitting element 15 at the isolation opening 123 , a packaging unit 18 located on a side of the light-emitting element 15 away from the array substrate 11 , and a shielding structure layer 14 .

[0184] Optionally, the light-emitting element 15 can be a light-emitting element of any color, such as a red light-emitting element, a green light-emitting element or a blue light-emitting element. In practical applications, after the light-emitting functional layer, the second electrode material layer and the packaging material layer corresponding to the light-emitting element of the last color are manufactured, the light-emitting functional layer, the second electrode material layer and the packaging material layer can be patterned to form the light-emitting element 15, the plurality of packaging units 18 and the shielding structure layer 14 at the isolation opening 123.

[0185] It is understood that the light-emitting functional layer at least includes an unpatterned light-emitting layer (Emission layer, EML), and in addition, it may also include an unpatterned functional layer, which may include at least one of a hole injection layer (HIL), a hole transport layer (HTL) and an electron blocking layer (EBL). It is understood that it may also include at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL).

[0186] The technical solution in the embodiment of the present application forms a light-emitting functional layer, a second electrode material layer and a packaging material layer on the entire surface of the isolation structure 121 and the touch electrode 13 on the side away from the array substrate 11, and patterning the light-emitting functional layer, the second electrode material layer and the packaging material layer to form a light-emitting element 15 at the isolation opening 123, a packaging unit located on the side of the light-emitting element 15 away from the array substrate 11, and a shielding structure layer 14; the above method forms the light-emitting functional layer, the second electrode material layer and the packaging material layer on the entire surface, so that each film layer can be evenly distributed in the display area of ​​the entire display panel 10 to prevent the problem of local uneven light emission.

[0187] An embodiment of the present application further provides a display device, comprising the display panel 10 in any of the above embodiments.

[0188] The display device can be a laptop computer, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a television monitor, a flat panel display, a computer monitor, a car display (e.g., an odometer display, etc.), a navigator, a cockpit controller and / or display, a display of a camera view (e.g., a display of a rearview camera in a vehicle), an electronic photo, an electronic billboard or sign, a projector, etc.

[0189] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: include: An array substrate; An isolation structure layer, disposed on one side of the array substrate, the isolation structure layer comprising isolation structures, at least some of which have isolation gaps between them; A touch electrode, disposed on one side of the array substrate and located in the isolation gap; The shielding structure layer is at least partially located between the isolation structure and the touch electrode.

2. The display panel according to claim 1, characterized in that: The shielding structure layer includes a first shielding portion, and the first shielding portion covers at least a portion of a surface of the touch electrode facing the isolation structure.

3. The display panel according to claim 2, characterized in that: The first shielding portion includes a first main body portion, and the first main body portion covers at least a portion of a side wall of the touch electrode; Optionally, the first shielding portion further includes a first extending portion connected to the first main body portion, the first extending portion is located on a side of the touch electrode away from the array substrate, and a side surface of the first extending portion close to the array substrate is spaced from a side surface of the touch electrode away from the array substrate; Optionally, the first shielding part also includes a second extension portion connected to the first main body portion, the second extension portion is connected to an end of the first main body portion close to the array substrate, and a side surface of the second extension portion close to the array substrate is spaced apart from a side surface of the array substrate close to the second extension portion.

4. The display panel according to claim 1, characterized in that: The shielding structure layer comprises a second shielding portion, and the second shielding portion covers at least a portion of a surface of the isolation structure facing the touch electrode; Optionally, the shielding structure layer further includes a first shielding portion, the first shielding portion covers at least a portion of the surface of the touch electrode facing the isolation structure; the orthographic projection size of the second shielding portion on the array substrate is different from the orthographic projection size of the first shielding portion in the shielding structure layer on the array substrate; Optionally, a size of an orthographic projection of the second shielding portion on the array substrate is smaller than a size of an orthographic projection of the first shielding portion on the array substrate.

5. The display panel according to claim 4, characterized in that: The second shielding portion includes a second body portion, the second body portion covering at least a portion of a side wall of the isolation structure; Optionally, the second shielding portion further includes a third extending portion connected to the second main body portion, the third extending portion is located on a side of the isolation structure away from the array substrate, and a side surface of the third extending portion close to the array substrate is spaced from a side surface of the isolation structure away from the array substrate; Optionally, one end of the second main body portion facing the array substrate is spaced apart from a side surface of the isolation structure away from the array substrate.

6. The display panel according to any one of claims 1 to 3, characterized in that: The isolation structure comprises a first isolation layer and a second isolation layer, wherein the first isolation layer is arranged on a side of the second isolation layer away from the array substrate; an orthographic projection of the first isolation layer on the array substrate is located within an orthographic projection of the second isolation layer on the array substrate; Optionally, the material of the first isolation layer includes titanium or molybdenum; the material of the second isolation layer includes aluminum, silver or copper.

7. The display panel according to claim 6, characterized in that: The touch electrode comprises a first electrode layer and a second electrode layer, wherein the first electrode layer is arranged on a side of the second electrode layer away from the array substrate; an orthographic projection of the first electrode layer on the array substrate is located within an orthographic projection of the second electrode layer on the array substrate; Optionally, the first isolation layer and the first electrode layer are provided in the same layer and with the same material; Optionally, the second isolation layer and the second electrode layer are provided in the same layer and with the same material; Optionally, the isolation structure further includes a third isolation layer, which is disposed on a side of the first isolation layer facing the array substrate; an orthographic projection of the first isolation layer on the array substrate is located within an orthographic projection of the third isolation layer on the array substrate; Optionally, the material of the third isolation layer includes titanium or molybdenum; Optionally, the touch electrode further includes a third electrode layer, and the third electrode layer is disposed on a side of the first electrode layer facing the array substrate; an orthographic projection of the first electrode layer on the array substrate is located within an orthographic projection of the third electrode layer on the array substrate; Optionally, the third isolation layer and the third electrode layer are provided in the same layer and with the same material.

8. The display panel according to claim 1, characterized in that: The isolation structure encloses a plurality of isolation openings; the display panel further comprises a plurality of light emitting elements, the plurality of light emitting elements are arranged corresponding to the plurality of isolation openings, and at least a portion of the light emitting elements is arranged in the corresponding isolation openings; Optionally, the light emitting element comprises a first electrode, a light emitting functional portion and a second electrode which are sequentially stacked and arranged away from the array substrate, and the second electrode is electrically connected to the isolation structure.

9. The display panel according to claim 8, characterized in that: The display panel further comprises a pixel defining layer; the isolation structure and the touch electrode are both located on a side of the pixel defining layer away from the array substrate; The pixel defining layer is provided with a plurality of pixel openings; the pixel openings are connected with the isolation openings, the plurality of light emitting elements are arranged corresponding to the plurality of pixel openings, and at least part of the light emitting elements is arranged in the corresponding pixel openings.

10. The display panel according to claim 8, characterized in that: The material of the shielding structure layer includes inorganic material; Optionally, the display panel further includes a packaging structure layer, the packaging structure layer includes a plurality of packaging units, the plurality of packaging units are arranged corresponding to the plurality of light-emitting elements and are arranged on a side of the plurality of light-emitting elements away from the array substrate; Optionally, the shielding structure layer and the plurality of packaging units are provided in the same layer and with the same material.

11. A display panel, characterized in that: include: An array substrate; An isolation structure layer, disposed on one side of the array substrate, the isolation structure layer comprising an isolation structure and a touch electrode, wherein the isolation structure and the touch electrode are spaced apart; The shielding structure layer is at least partially located between the isolation structure and the touch electrode.

12. The display panel according to claim 11, characterized in that: The shielding structure layer includes a first shielding portion, and the first shielding portion covers at least a portion of a surface of the touch electrode facing the isolation structure.

13. The display panel according to claim 12, characterized in that: The first shielding portion includes a first main body portion, and the first main body portion covers at least a portion of a side wall of the touch electrode; Optionally, the first shielding portion further includes a first extending portion connected to the first main body portion, the first extending portion is located on a side of the touch electrode away from the array substrate, and a side surface of the first extending portion close to the array substrate is spaced from a side surface of the touch electrode away from the array substrate; Optionally, the first shielding part also includes a second extension portion connected to the first main body portion, the second extension portion is connected to an end of the first main body portion close to the array substrate, and a side surface of the second extension portion close to the array substrate is spaced apart from a side surface of the array substrate close to the second extension portion.

14. The display panel according to claim 11, characterized in that: The shielding structure layer comprises a second shielding portion, and the second shielding portion covers at least a portion of a surface of the isolation structure facing the touch electrode; Optionally, the shielding structure layer further includes a first shielding portion, the first shielding portion covers at least a portion of a surface of the touch electrode facing the isolation structure; an orthographic projection size of the second shielding portion on the array substrate is different from an orthographic projection size of the first shielding portion in the shielding structure layer on the array substrate; Optionally, a size of an orthographic projection of the second shielding portion on the array substrate is smaller than a size of an orthographic projection of the first shielding portion on the array substrate.

15. The display panel according to claim 14, characterized in that: The second shielding portion includes a second body portion, the second body portion covering at least a portion of a side wall of the isolation structure; Optionally, the second shielding portion further includes a third extending portion connected to the second main body portion, the third extending portion is located on a side of the isolation structure away from the array substrate, and a side surface of the third extending portion close to the array substrate is spaced from a side surface of the isolation structure away from the array substrate; Optionally, one end of the second main body portion facing the array substrate is spaced apart from a side surface of the isolation structure away from the array substrate.

16. The display panel according to claim 11, characterized in that: The display panel further comprises a packaging structure layer, wherein the packaging structure layer comprises a plurality of packaging units, and the plurality of packaging units are arranged corresponding to the plurality of light emitting elements and are arranged on a side of the plurality of light emitting elements away from the array substrate; Optionally, the shielding structure layer and the plurality of packaging units are provided in the same layer and with the same material.

17. A method for preparing a display panel, characterized in that: include: Providing an array substrate; forming an isolation structure and a touch electrode on one side of the array substrate; An isolation gap is provided between at least some of the isolation structures, and the touch electrodes are located in the isolation gap; At least a portion of a shielding structure layer is formed between the isolation structure and the touch electrode.

18. The method according to claim 17, characterized in that The step of forming at least a portion of a shielding structure layer between the isolation structure and the touch electrode comprises: forming the shielding structure layer on at least a portion of the surface of the isolation structure facing the touch electrode and / or on at least a portion of the surface of the touch electrode facing the isolation structure; Optionally, the material of the shielding structure layer includes inorganic material; Optionally, the isolation structure encloses a plurality of isolation openings; and before the step of forming at least a portion of the shielding structure layer between the isolation structure and the touch electrode, the method further includes: Forming a light-emitting function layer, a second electrode material layer and a packaging material layer on the entire surface of the isolation structure and the touch electrode away from the array substrate; The light-emitting functional layer, the second electrode material layer and the packaging material layer are patterned to form a light-emitting element at the isolation opening, a packaging unit located on a side of the light-emitting element away from the array substrate, and the shielding structure layer.

19. A display device, characterized in that: A display panel comprising the display panel described in any one of claims 1-16 or a display panel prepared by the method described in any one of claims 17-18.

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