Display panel, display device and preparation method of display panel

Abstract

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises a bending display area and a non-bending display area which are connected, the display panel comprises a substrate, an isolation structure and a light-emitting function layer, the isolation structure is arranged on one side of the substrate, and a plurality of limiting openings are defined by the isolation structure; the light-emitting functional layer comprises a plurality of light-emitting units, and at least parts of the light-emitting units are arranged in the corresponding limited openings; the display panel is further provided with a plurality of open holes formed in the bent display area, the open holes penetrate through at least part of the substrate and at least part of the isolation structure, and the orthographic projection of the light-emitting units on the plane where the substrate is located does not overlap with the orthographic projection of the open holes on the plane where the substrate is located. The product stability of the display panel provided by the invention is high.

Description

Technical Field

[0001] The present application relates to the field of displays, and particularly to a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0002] Display panels based on technologies such as Organic Light Emitting Display (OLED) and Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptop computers, and desktop computers due to advantages such as high image quality, power saving, thin body, and wide application range, and have become the mainstream in display devices. However, the current manufacturing process of display panels needs to be improved. Summary of the Invention

[0003] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, aiming to improve the technical problems of the manufacturing process of related display panels.

[0004] An embodiment of the first aspect of the present application provides a display panel. The display panel includes a bent display area and a non-bent display area connected to each other, and the display panel includes: A substrate; An isolation structure disposed on one side of the substrate, and the isolation structure encloses a plurality of defined openings; A light-emitting functional layer including a plurality of light-emitting units, and at least a part of the light-emitting units is disposed in the corresponding defined openings; The display panel further has a plurality of openings disposed in the bent display area. The openings penetrate at least a part of the substrate and at least a part of the isolation structure, and the orthographic projection of the light-emitting units on the plane where the substrate is located does not overlap with the orthographic projection of the openings on the plane where the substrate is located.

[0005] According to an embodiment of the first aspect of the present application, the substrate includes a substrate and a driving circuit layer. The driving circuit layer is disposed on one side of the substrate. The driving circuit layer includes a plurality of conductive layers and insulating layers located between adjacent conductive layers. The openings penetrate through a plurality of insulating layers, and the orthographic projection of any conductive layer on the substrate does not overlap with the openings.

[0006] According to an embodiment of the first aspect of the present application, the openings distributed on the isolation structure are spaced apart from the defined openings.

[0007] According to an embodiment of the first aspect of the present application, the isolation structure includes a first isolation layer and a second isolation layer stacked. The first isolation layer is disposed on the side of the second isolation layer close to the substrate, and the orthographic projection of the first isolation layer on the substrate is located within the orthographic projection of the second isolation layer on the substrate.

[0008] According to an embodiment of the first aspect of the present application, the openings penetrate through the first isolation layer and the second isolation layer; According to an embodiment of the first aspect of the present application, the orthographic projection area of the surface of the second isolation layer facing away from the substrate on the substrate is smaller than the orthographic projection area of the surface of the second isolation layer close to the substrate on the substrate; According to an embodiment of the first aspect of the present application, the orthographic projection area of the surface of the first isolation layer facing away from the substrate on the substrate is smaller than the orthographic projection area of the surface of the second isolation layer close to the substrate on the substrate.

[0009] According to an embodiment of the first aspect of the present application, the display panel further includes a first electrode layer, the first electrode layer includes a plurality of spaced-apart first electrodes, the first electrodes are located on the side of the corresponding light-emitting unit close to the substrate, and the orthographic projection of the first electrodes on the plane where the substrate is located is spaced apart from the orthographic projection of the opening on the plane where the substrate is located.

[0010] According to an embodiment of the first aspect of the present application, the display panel further includes a second electrode layer, the second electrode layer includes a plurality of spaced-apart second electrodes, at least a part of the second electrodes is disposed within the corresponding defined opening, the second electrodes are located on the side of the corresponding light-emitting unit facing away from the substrate, and the orthographic projection of the second electrodes on the plane where the substrate is located is spaced apart from the orthographic projection of the opening on the plane where the substrate is located; According to an embodiment of the first aspect of the present application, the second electrode is electrically connected to the isolation structure.

[0011] According to an embodiment of the first aspect of the present application, the display panel further includes a first encapsulation layer, the first encapsulation layer includes a plurality of first encapsulation parts, at least a part of the first encapsulation parts is located within the corresponding defined opening, the first encapsulation parts are disposed on the side of the corresponding light-emitting unit facing away from the substrate, and the orthographic projection of the first encapsulation parts on the substrate covers the orthographic projection of the corresponding light-emitting unit on the substrate; According to an embodiment of the first aspect of the present application, the orthographic projection of the first encapsulation part on the plane where the substrate is located does not overlap with the orthographic projection of the opening on the plane where the substrate is located.

[0012] According to an embodiment of the first aspect of the present application, at least a part of the first encapsulation part is located on the side of the isolation structure facing away from the substrate.

[0013] According to an embodiment of the first aspect of the present application, the display panel further includes a second encapsulation layer, the second encapsulation layer is located on the side of the first encapsulation layer facing away from the substrate, and the opening penetrates through the second encapsulation layer; According to an embodiment of the first aspect of the present application, there is a gap between adjacent first encapsulation parts, the second encapsulation layer includes a connected second encapsulation part and a third encapsulation part, the second encapsulation part is located on the side of the first encapsulation part facing away from the substrate, the third encapsulation part is located within the gap and contacts the surface of the isolation structure facing away from the substrate, and the opening penetrates through the third encapsulation part; According to an embodiment of the first aspect of the present application, the display panel further includes a third encapsulation layer, the third encapsulation layer is located on the side of the second encapsulation layer facing away from the substrate, and the opening penetrates through the third encapsulation layer.

[0014] According to an embodiment of the first aspect of the present application, the display panel further includes: A pixel definition layer is arranged on a side of the isolation structure close to the substrate. The pixel definition layer includes a plurality of pixel openings. The pixel openings are connected to corresponding limiting openings. At least part of the light-emitting unit is arranged in the pixel openings. The openings penetrate the pixel definition layer. The openings in the pixel definition layer are spaced apart from the pixel openings. The orthographic projection of the pixel opening on the substrate is within the range of the orthographic projection of the limiting opening on the substrate.

[0015] According to an embodiment of the first aspect of the present application, the display panel also includes a touch layer, which is located on the side of the light-emitting functional layer away from the substrate, and the opening passes through the touch layer, and the orthographic projection of the touch electrode on the surface where the substrate is located does not overlap with the orthographic projection of the opening on the surface where the substrate is located.

[0016] According to an embodiment of the first aspect of the present application, the distribution density of the light-emitting units in the bent display area is less than the distribution density of the light-emitting units in the non-bent display area.

[0017] According to an embodiment of the first aspect of the present application, the multiple openings include a plurality of first openings and a plurality of second openings, the first openings extend along a first direction, the second openings extend along a second direction, the plurality of first openings and the plurality of second openings are arranged at intervals, and the first direction and the second direction intersect.

[0018] According to an embodiment of the first aspect of the present application, a plurality of first openings arranged at intervals along the first direction form a first opening group, the plurality of first opening groups are sequentially arranged along the second direction, a plurality of second openings arranged at intervals along the second direction form a second opening group, and the plurality of second opening groups are sequentially arranged along the first direction; The first opening is arranged between the second openings arranged adjacent to each other along the second direction, and the second opening is arranged between the first openings arranged adjacent to each other along the first direction.

[0019] According to an embodiment of the first aspect of the present application, a plurality of light-emitting units are combined to form a light-emitting unit group, and the plurality of light-emitting unit groups are arranged in an array; A plurality of openings surround the light emitting unit group and are arranged at intervals.

[0020] According to an embodiment of the first aspect of the present application, the bent display area is arranged around at least a portion of the non-bent display area, and the display panel also includes a binding area, which is connected to the bent display area.

[0021] According to an embodiment of the first aspect of the present application, the bent display area is arranged around at least a portion of the non-bent display area, the display panel also includes a binding area, the display panel has a first notch, the first notch is arranged around at least a portion of the non-bent display area, and a portion of the binding area is located in the first notch and connected to the non-bent display area.

[0022] According to an embodiment of the first aspect of the present application, the number of non-bent display areas is multiple. The multiple non-bent display areas include a first display area and a second display area. The second display area is arranged around the first display area. The non-bent display area is located between the first display area and the second display area and connects the first display area and the second display area.

[0023] According to an embodiment of the first aspect of the present application, the shape of the orthographic projection of the first display area on the plane where the substrate is located is circular or elliptical.

[0024] According to an embodiment of the first aspect of the present application, the display panel further includes a bonding area, and the bonding area is connected to the second display area; Alternatively, the display panel has a second notch, and the second notch is arranged around at least part of the bent display area; part of the bonding area is located within the second notch.

[0025] An embodiment of the second aspect of the present application provides a method for manufacturing a display panel, including: Providing a substrate, the substrate having a connected first area and a second area; Forming an isolation structure on one side of the substrate, the isolation structure enclosing a plurality of defined openings. The display panel has a plurality of openings provided in the second area, and the openings penetrate at least part of the substrate and at least part of the isolation structure. The defined openings and the openings are arranged at intervals; Forming a light-emitting functional layer on one side of the substrate, the light-emitting functional layer including a plurality of light-emitting units. At least part of the light-emitting units is arranged in the defined openings, and the orthographic projection of the light-emitting units on the plane where the substrate is located does not overlap with the orthographic projection of the openings on the plane where the substrate is located; Bending at least part of the second area, the second area forms a bent display area, and the first area forms a non-bent display area.

[0026] According to an embodiment of the second aspect of the present application, the second area has a plurality of first openings; forming an isolation structure on one side of the substrate includes: Sequentially forming a first isolation material layer and a second isolation material layer on one side of the substrate. The first isolation material layer has second openings communicating with the corresponding first openings, and the second isolation material layer has third openings communicating with the corresponding second openings; Performing patterning on the second isolation material layer and the first isolation material layer to obtain a plurality of defined openings. The first isolation material layer forms a first isolation layer, and the second isolation material layer forms a second isolation layer; Wherein, the openings include connected first openings, second openings and third openings.

[0027] According to an embodiment of the second aspect of the present application, forming a light-emitting functional layer on one side of the substrate includes: A first light emitting material layer, a first conductive material layer and a first packaging material layer are sequentially arranged on one side of the substrate, wherein at least parts of the first light emitting material layer, the first conductive material layer and the first packaging material layer are located in the defined opening; The first packaging material layer, the first light-emitting material layer and the first conductive material layer in part of the defined openings are removed, and the first light-emitting material layer in the remaining defined openings forms a light-emitting unit, the first conductive material layer on the side of the light-emitting unit away from the substrate forms a first electrode, and the first packaging material layer on the side of the light-emitting unit away from the substrate forms a first packaging portion.

[0028] According to an embodiment of the second aspect of the present application, the second region has a plurality of first openings; and forming an isolation structure on one side of the substrate includes: sequentially forming a first isolation material layer and a second isolation material layer on one side of the substrate; The second isolation material layer and the first isolation material layer are patterned to obtain a plurality of defined openings, and second openings and third openings connected to the corresponding first openings. The first isolation material layer forms a first isolation layer having a second opening, and the second isolation material layer forms a second isolation layer having a third opening, wherein the opening includes the second opening and the third opening connected to each other.

[0029] An embodiment of the third aspect of the present application provides a display device, which includes a display panel according to any of the above embodiments, or a display panel prepared according to any of the above embodiments.

[0030] According to the display panel, display device and display panel manufacturing method of the embodiments of the present application, a plurality of openings are provided in the bent display area, and the openings penetrate at least a portion of the substrate and at least a portion of the isolation structure, so that the openings can provide an escape space for the bent display area, thereby avoiding stress concentration in the bent display area; when the display panel is subjected to tensile stress and compressive stress, the stress can be released through the openings, thereby improving the service life of the display panel; the orthographic projection of the light-emitting unit on the surface where the substrate is located does not overlap with the orthographic projection of the opening on the surface where the substrate is located, thereby ensuring that any area of ​​the light-emitting unit will not be exposed by the opening, thereby avoiding or reducing external water vapor, air, etc. from entering the light-emitting unit through the openings, thereby improving the service life of the light-emitting unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0032] Figure 1 is a top view of a display panel provided in an embodiment of the present application; Figure 2It is a cross-sectional view of a display panel provided by an embodiment of the present application; Figure 3 It is a partial cross-sectional view of a display panel provided by an embodiment of the present application; Figure 4 It is a partial cross-sectional view of a display panel provided by an embodiment of the present application; Figure 5 It is a partial cross-sectional view of a display panel provided by an embodiment of the present application; Figure 6 It is a partial cross-sectional view of a display panel along a certain direction provided by an embodiment of the present application; Figure 7 It is a partial top view of a display panel provided by an embodiment of the present application; Figure 8 It is a top view of a display panel provided by an embodiment of the present application; Figure 9 It is a top view of a display panel provided by an embodiment of the present application; Figure 10 It is a top view of a display panel provided by an embodiment of the present application; Figure 11 It is a top view of a display panel provided by an embodiment of the present application.

[0033] Explanation of reference numerals: 100, display panel; AA1, non-bent display area; AA11, first display area; AA12, second display area; AA2, bent display area; NA, non-display area; BN, bonding area; 101, first notch; 102, second notch; 1, substrate; 11, substrate; 12, driving circuit layer; 121, conductive layer; 122, insulating layer; 2, isolation structure; 21, first isolation layer; 22, second isolation layer; 23, defining opening; 24, third isolation layer; 3, light-emitting functional layer; 31, light-emitting unit; 4, first electrode; 5, second electrode; 6, pixel definition layer; 61, pixel opening; 71, first encapsulation part; 72, second encapsulation layer; 721, second encapsulation part; 722, third encapsulation part; 73, third encapsulation layer; 8, touch control layer; 81, touch control electrode; 9, opening; 91, first opening; 92, second opening; 93, cover plate; X, first direction; Y, second direction; Z, third direction. Detailed implementation manners

[0034] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0035] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0036] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "above" or "over" another layer or another region, it may mean directly above the other layer or another region, or there may be other layers or regions between it and the other layer or another region. And if the component is flipped, this layer or region will be "below" or "beneath" the other layer or region.

[0037] In the related art, a partial area of a display panel is bent to make the display panel adapt to electronic devices with different shapes. During the bending process of the display panel, the display panel will be damaged due to stress concentration during bending, affecting the product stability and service life of the display panel.

[0038] To solve the above problems, embodiments of the present application provide a display panel, a method for manufacturing a display panel, and a display device. The embodiments of the display panel, the method for manufacturing a display panel, and the display device will be described below in conjunction with the accompanying drawings.

[0039] Embodiments of the present application provide a display panel, a method for manufacturing a display panel, and a display device. The following will be combined with the attached Figures 1 to 11 The embodiments of the display panel, the method for manufacturing a display panel, and the display device will be described.

[0040] Please refer toFigure 1 , Figure 2 Figure 3 , the display panel 100 includes a bent display area AA2 and a non-bent display area AA1 that are connected. The display panel 100 includes: a substrate 1, an isolation structure 2, and a light-emitting functional layer 3. The isolation structure 2 is disposed on one side of the substrate 1, and the isolation structure 2 encloses a plurality of defined openings 23; the light-emitting functional layer 3 includes a plurality of light-emitting units 31, and at least part of the light-emitting units 31 is disposed in the corresponding defined openings 23; the display panel 100 further has a plurality of openings 9 disposed in the bent display area AA2, and the openings 9 penetrate at least part of the substrate 1 and at least part of the isolation structure 2, and the orthographic projection of the light-emitting unit 31 on the plane where the substrate 1 is located does not overlap with the orthographic projection of the opening 9 on the plane where the substrate 1 is located.

[0041] In the display panel 100 provided by the embodiment of the present application, the display panel 100 may be a display panel 100 based on Organic Light Emitting Diode (OLED) technology. Among them, the isolation structure 2 is described in related patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072 for reference.

[0042] The display panel 100 provided by the present application has a bent display area AA2 and a non-bent display area AA1. At least part of the bent display area AA2 is bent into an arc shape, so that the display panel 100 can provide a three-dimensional display effect. The bent display area AA2 can be disposed around the non-bent display area AA1, and different areas of the bent display area AA2 can be bent along bending axes with different directions respectively.

[0043] In the display panel 100 provided by the embodiments of the present application, the substrate 1 can not only provide support for the isolation structure 2, but also provide electrical signals for the light-emitting functional layer. There are various ways to arrange the substrate 1. In some embodiments, the substrate 1 may include a substrate 11 and a driving circuit layer 12 disposed on the substrate 11. The substrate 11 can provide support for the driving circuit layer 12. The substrate 11 is made of a flexible material to facilitate bending the display area AA2 to achieve bending. The flexible material includes, but is not limited to, polyimide (PI), polyethylene terephthalate (PET), etc. The driving circuit layer 12 may include a pixel driving circuit, a light sensing circuit, etc. Exemplarily, the pixel driving circuit disposed on the driving circuit layer 12 includes a transistor and a storage capacitor. The transistor includes an active layer, a gate, a drain, and a source. The storage capacitor includes a first electrode plate and a second electrode plate. As an example, the gate and the first electrode plate may be located in the same conductive layer 121, the second electrode plate may be located in another conductive layer 121, and the drain and the source may be located in yet another conductive layer 121.

[0044] The isolation structure 2 encloses to form a defined opening 23 to define the setting range of the light-emitting unit 31, and the adjacent defined openings 23 can be spaced apart by the isolation structure 2. Optionally, the isolation structure 2 is in a grid shape, and the defined openings 23 are arranged in an array to improve the light-emitting uniformity of the arranged light-emitting units 31.

[0045] The number of the defined openings 23 can correspond one-to-one to the number of the light-emitting units 31. The multiple light-emitting units 31 can be light-emitting units 31 capable of emitting light of different colors respectively. For example, it can be a red light-emitting unit capable of emitting red light, a green light-emitting unit capable of emitting green light, and a blue light-emitting unit capable of emitting blue light. When the light-emitting functional layer has multiple light-emitting units 31, the multiple defined openings 23 include openings corresponding to various light-emitting units 31, and the shapes and sizes of the defined openings 23 for placing different light-emitting units 31 can be the same or different.

[0046] When preparing the display panel 100, one or more material layers may be patterned to obtain the aforementioned opening 9. When preparing the display panel 100, a plurality of first openings may be firstly opened in the flat substrate 11 corresponding to the portion of the bent display area AA2, and then a plurality of material layers may be sequentially arranged on the substrate 11 having the first openings to prepare a flat display panel 100. Each material layer prepared subsequently has other openings corresponding to the first openings, and the connected first openings and other openings form an opening 9 that penetrates the substrate 1 and the isolation structure 2. The portion of the flat display panel 100 corresponding to the bent display area AA2 is bent to obtain a bent display area AA2 that is bent relative to the non-bent display area AA1. The opening 9 may provide an escape space for the bent display area AA2 to avoid stress concentration in the bent display area AA2; when the display panel 100 is subjected to tensile stress and compressive stress, the stress may be released through the opening 9.

[0047] A plurality of light-emitting units 31 are arranged in the bending display area AA2 and the non-bending display area AA1, so that both the bending display area AA2 and the non-bending display area AA1 can emit light for display. The orthographic projection of the light-emitting unit 31 on the surface where the substrate 1 is located does not overlap with the orthographic projection of the opening 9 on the surface where the substrate 1 is located, so as to ensure that any area of ​​the light-emitting unit 31 is not exposed by the opening 9, which is conducive to isolating the light-emitting unit 31 from water and oxygen.

[0048] In the present application, the orthographic projection is a projection along the third direction Z, and the third direction Z may be a direction from the substrate 1 to the light-emitting unit 31, or may be a thickness direction of the display panel 100. The opening 9 may extend along the third direction Z. It is worth noting that, for ease of understanding, the orthographic projection in the present application is described with reference to the structure of the display panel 100 before the bent display area AA2 is bent.

[0049] In the present application, a plurality of openings 9 are provided in the bent display area AA2, and the openings 9 penetrate the substrate 1 and the isolation structure 2, so that the openings 9 can provide an escape space for the bent display area AA2, thereby avoiding stress concentration in the bent display area AA2; when the display panel 100 is subjected to tensile stress and compressive stress, the stress can be released through the openings 9, thereby improving the service life of the display panel 100; the orthographic projection of the light-emitting unit 31 on the substrate 1 does not overlap with the openings 9, thereby ensuring that any area of ​​the light-emitting unit 31 will not be exposed by the openings 9, thereby avoiding or reducing the entry of external water vapor, air, etc. into the light-emitting unit 31 through the openings 9, thereby improving the service life of the light-emitting unit 31.

[0050] In some embodiments, the display panel 100 further includes a cover plate 93 , which is located on the side of the light-emitting functional layer 3 facing away from the substrate 1 . The cover plate 93 covers one side of the opening 9 to reduce external impurities from entering the opening 9 .

[0051] In some embodiments, the substrate 1 includes a substrate 11 and a driving circuit layer 12. The driving circuit layer 12 is disposed on one side of the substrate 11, and the opening 9 penetrates through the substrate 11 and the driving circuit layer 12.

[0052] The driving circuit layer 12 may include a plurality of conductive layers 121 and a plurality of insulating layers 122. Adjacent conductive layers 121 are electrically connected through vias disposed on the insulating layers 122 to obtain the required driving circuit. The opening 9 penetrates through the substrate 11 and the driving circuit layer 12, so that stress in each film layer of the entire substrate 11 and the driving circuit layer 12 can be released through the opening 9.

[0053] In some embodiments, the driving circuit layer 12 includes a plurality of conductive layers 121 and insulating layers 122 located between adjacent conductive layers 121. The opening 9 penetrates through the plurality of insulating layers 122, and the orthographic projection of any conductive layer 121 on the plane where the substrate 11 is located does not overlap with the orthographic projection of the opening 9 on the plane where the substrate 11 is located.

[0054] The plurality of patterned conductive layers 121 form devices such as thin film transistors and storage capacitors through methods such as spacing and via connection. The insulating layers 122 are disposed between adjacent conductive layers 121 to electrically isolate adjacent conductive layers 121. The orthographic projection of any conductive layer 121 on the substrate 11 does not overlap with the opening 9, thereby preventing the opening 9 from exposing the conductive layer 121 and preventing the conductive layer 121 from directly contacting external water vapor and air through the opening 9, which is beneficial to improving the service life of the conductive layer 121. It can also prevent different conductive layers 121 exposed through the opening 9 or different portions of the same conductive layer 121 from contacting in the bending display area AA2 after bending, and prevent unwanted electrical conduction between conductive structures.

[0055] In some embodiments, a plurality of sequentially stacked insulating layers 122 enclose to form part of the wall surface of the opening 9.

[0056] On the substrate 11 having a first opening, each insulating layer 122 can be formed in sequence along the first direction X through methods such as deposition and coating. The subsequently prepared insulating layer 122 covers the previously prepared conductive layer 121. The insulating material for preparing the insulating layer 122 forms an opening that is sequentially connected along the third direction Z at a position corresponding to the first opening. The first opening and the opening sequentially connected along the third direction Z are connected to form at least part of the opening 9. The wall surface of the part of the opening 9 located on the substrate 11 is formed by the substrate 11. The wall surface of the part of the opening 9 located in the driving circuit layer 12 is formed by the insulating layers 122 sequentially stacked along the third direction Z.

[0057] In some embodiments, the opening 9 distributed on the isolation structure 2 is spaced apart from the defined opening 23.

[0058] The isolation structure 2 encloses and defines an opening 23, and at least a part of the light-emitting unit 31 is disposed in the corresponding defined opening 23. The isolation structure 2 can be spaced between adjacent light-emitting units 31, thereby preventing carrier crosstalk between adjacent light-emitting units 31. The opening 9 distributed on the isolation structure 2 is spaced from the defined opening 23, thereby preventing the opening 9 from being directly communicated with the defined opening 23, and reducing or preventing external water and oxygen from entering the light-emitting unit 31 through the opening 9.

[0059] Please refer to Figure 4 In some embodiments, the isolation structure 2 includes a first isolation layer 21 and a second isolation layer 22 which are stacked. The first isolation layer 21 is disposed on the side of the second isolation layer 22 close to the substrate 1, and the orthographic projection of the first isolation layer 21 on the substrate 1 is located within the orthographic projection of the second isolation layer 22 on the substrate 1.

[0060] The orthographic projection of the first isolation layer 21 on the substrate 1 is located within the orthographic projection of the second isolation layer 22 on the substrate 1, so that the cross-sectional area of the end of the isolation structure 2 far from the substrate 1 is larger, and the cross-sectional area of the end of the isolation structure 2 close to the substrate 1 is smaller. Along the direction from the isolation structure 2 to the substrate 1, the second isolation layer 22 completely covers the first isolation layer 21. For example, the cross-section of the isolation structure 2 is in a T shape.

[0061] When preparing the light-emitting unit 31, the light-emitting material A for preparing the light-emitting unit 31 can be covered on the isolation structure 2 based on the evaporation technology. Since the second isolation layer 22 covers the first isolation layer 21, a large drop is generated at the edge of the second isolation layer 22 for the light-emitting material A for preparing the light-emitting unit 31, and it is difficult to connect the light-emitting material A falling in the defined opening 23 and the light-emitting material A falling on the second isolation layer 22, so that breakage occurs, and the light-emitting material A spaced in adjacent defined openings 23 is formed. Compared with the preparation of the light-emitting unit 31 by evaporation through a precision mask plate in the related art, in this application, by providing the first isolation layer 21 and the second isolation layer 22, the light-emitting unit 31 located in the defined opening 23 can be prepared without a precision metal mask plate, thereby saving the cost of the precision metal mask plate. Compared with the preparation of the light-emitting unit 31 by evaporation through a precision metal mask plate with high precision, it is easier to directly prepare the isolation structure 2 with high precision, so that the structure of the display panel 100 provided in this application has low requirements for the preparation process, and the obtained display panel 100 has good consistency. The light-emitting material A can be a complex containing indium elements.

[0062] In some embodiments, the opening 9 penetrates through the first isolation layer 21 and the second isolation layer 22.

[0063] The sizes of the first isolation layer 21 and the second isolation layer 22 are different. By setting the opening 9 to penetrate through the first isolation layer 21 and the second isolation layer 22, it is ensured that the opening 9 and the light-emitting unit 31 are spaced apart.

[0064] The second isolation layer 22 extends outward from the first isolation layer 21 by a predetermined distance, that is, the orthographic projection area of the surface of the second isolation layer 22 facing away from the substrate 1 on the substrate 1 is smaller than the orthographic projection area of the surface of the second isolation layer 22 close to the substrate 1 on the substrate 1, so that the second isolation layer 22 has an inclined ramp structure, facilitating the definition of the pattern of the light-emitting unit 31 through the second isolation layer 22.

[0065] In some embodiments, the second isolation layer 22 protrudes toward the center of the opening 9 relative to the first isolation layer 21. When preparing the isolation structure 2, the first isolation material layer and the second isolation material layer are sequentially provided first, then the second isolation layer 22 is formed by etching the second isolation material layer, and then the first isolation layer 21 is formed by wet etching the first isolation material layer. By controlling the etching rate of the wet etching, it is obtained that the second isolation layer 22 protrudes toward the center of the defined opening 23 relative to the first isolation layer 21. At the same time, the first isolation material forming part of the wall surface of the opening 9 also contacts the etching solution, so that at the distribution of the opening 9, the second isolation layer 22 protrudes toward the center of the opening 9 relative to the first isolation layer 21.

[0066] Certainly, in some embodiments, the side walls of the first isolation layer 21 and the second isolation layer 22 at the opening 9 are flush.

[0067] In some embodiments, in the direction away from the substrate 1, the cross-sectional area of the second isolation layer 22 gradually decreases.

[0068] Optionally, the cross-section of the second isolation layer 22 is a trapezoid with the bottom edge facing the substrate 1, so that the second isolation layer 22 has a sloped surface, which is beneficial for the preparation material to break at the partition edge, forming a state where part of the preparation material is located on the second isolation layer 22 and part of the preparation material is located in the defined opening 23.

[0069] In some embodiments, the orthographic projection area of the surface of the first isolation layer 21 facing away from the substrate 1 on the substrate 1 is smaller than the orthographic projection area of the surface of the second isolation layer 22 close to the substrate 1 on the substrate 1.

[0070] That is, the second isolation layer 22 extends outward relative to the first isolation layer 21 to limit the pattern of the light-emitting unit 31 through the second isolation layer 22. The area of the second isolation layer 22 is larger than that of the first isolation layer 21, and the second isolation layer 22 completely covers the first isolation layer 21. At this time, the first isolation layer 21 is recessed relative to the second isolation layer 22 in the direction away from the defined opening 23. When preparing the light-emitting unit 31, at least part of the material for preparing the light-emitting unit 31 has a large drop at the edge of the isolation structure 2, and the first isolation layer 21 is concave. It is difficult for the material for preparing the light-emitting unit 31 to connect outside the isolation structure 2, so fracture is found, forming mutually isolated light-emitting units 31.

[0071] See also Figure 5 In some embodiments, the isolation structure 2 includes a third isolation layer 24, the third isolation layer 24 is located on a side of the first isolation layer 21 close to the substrate 1, the orthographic projection of the first isolation layer 21 on the substrate 1 is located within the orthographic projection of the third isolation layer 24 on the substrate 1, and the opening 9 passes through the third isolation layer 24. The cross section of the isolation structure 2 may be I-shaped.

[0072] Optionally, the orthographic projection area of ​​the first isolation layer 21 on the substrate 1 is smaller than the orthographic projection area of ​​the third isolation layer 24 on the substrate 1 .

[0073] The cross section of the first isolation layer 21 may be trapezoidal, increasing the size of the defined opening 23. The cross section of the first isolation layer 21 may be a regular trapezoid, which can stably support the second isolation layer 22 on the one hand, and on the other hand, makes the contact surface area between the first isolation layer 21 and the second isolation layer 22 smaller.

[0074] Optionally, the orthographic projection of the first isolation layer 21 on the substrate 1 is located within the orthographic projection of the third isolation layer 24 on the substrate 1, so that the third isolation layer 24 can stably support the first isolation layer 21, thereby realizing that the first isolation layer 21 is concavely set relative to the second isolation layer 22 in a direction away from the central axis of the limited opening 23, which facilitates the disconnection of the light-emitting functional layer at the isolation structure 2, and the etching waste generated by etching the first isolation layer 21 falls on the third isolation layer 24, which is easy to clean.

[0075] Optionally, the isolation structure 2 is in a grid shape, and the openings 23 are defined to be arranged in an array, so as to improve the light emission uniformity of the light emitting units 31 .

[0076] See also Figure 3 In some embodiments, the display panel 100 further includes a first electrode layer, the first electrode layer includes a plurality of spaced first electrodes 4, the first electrode 4 is located on a side of the light-emitting unit 31 close to the substrate 1, and the orthographic projection of the first electrode 4 on the surface where the substrate 1 is located is spaced apart from the orthographic projection of the opening 9 on the surface where the substrate 1 is located.

[0077] The first electrode layer is located on the side of the light-emitting functional layer 3 close to the substrate 1, and the first electrode layer includes a plurality of first electrodes 4, and the plurality of first electrodes 4 can be insulated from each other. The display panel 100 may also include a second electrode 5 located on the side of the corresponding light-emitting unit 31 away from the substrate 1. One of the first electrode 4 and the second electrode 5 may be a cathode, and the other may be an anode. The first electrode 4 and the second electrode 5 are respectively connected to the light-emitting unit 31 and are used to drive the light-emitting unit 31 to emit light. Optionally, the first electrode 4 is an anode and the second electrode 5 is a cathode.

[0078] The orthographic projection of the first electrode 4 on the surface where the substrate 1 is located is spaced from the orthographic projection of the opening 9 on the surface where the substrate 1 is located, thereby preventing the opening 9 from exposing the first electrode 4 and preventing the first electrode 4 from directly contacting external water vapor and air through the opening 9, which is beneficial to improving the service life of the first electrode 4. It can also prevent different first electrodes 4 exposed through the opening 9 from contacting each other in the bent display area AA2 after bending, and avoid electrical conduction between adjacent first electrodes 4.

[0079] In some embodiments, the display panel 100 also includes a second electrode layer, the second electrode layer includes a plurality of spaced second electrodes 5, at least a portion of the second electrode 5 is disposed in the corresponding limited opening 23, the second electrode 5 is located on the side of the corresponding light-emitting unit 31 away from the substrate 1, and the second electrode 5 is spaced apart from the orthographic projection of the surface where the substrate 1 is located and the orthographic projection of the opening 9 on the surface where the substrate 1 is located.

[0080] The orthographic projection of the second electrode 5 on the surface where the substrate 1 is located is arranged at an interval with the orthographic projection of the opening 9 on the surface where the substrate 1 is located, thereby preventing the opening 9 from exposing the second electrode 5 and preventing the second electrode 5 from directly contacting external water vapor and air through the opening 9, which is beneficial to improving the service life of the second electrode 5. It can also prevent different second electrodes 5 exposed through the opening 9 from contacting in the bent display area AA2 after bending, and avoid electrical conduction between adjacent second electrodes 5.

[0081] In some embodiments, the second electrode 5 is electrically connected to the isolation structure 2 .

[0082] The second electrode 5 can be connected to an external circuit by overlapping with the isolation structure 2. A plurality of second electrodes 5 can also be overlapped with the isolation structure 2 to electrically connect adjacent second electrodes 5 to each other.

[0083] In some embodiments, the second electrodes 5 distributed on opposite sides of the opening 9 are electrically connected through the isolation structure 2 .

[0084] The opening 9 penetrates the isolation structure 2 . When the opening 9 is not arranged around the second electrode 5 , the second electrodes 5 distributed on two opposite sides of the opening 9 can be electrically connected through the isolation structure 2 .

[0085] In some embodiments, the display panel 100 also includes a first encapsulation layer, the first encapsulation layer includes a plurality of first encapsulation portions 71, at least a portion of the first encapsulation portion 71 is located within the corresponding defined opening 23, the first encapsulation portion 71 is disposed on the side of the corresponding light-emitting unit 31 facing away from the substrate 1, and the orthographic projection of the first encapsulation portion 71 on the substrate 1 covers the orthographic projection of the light-emitting unit 31 on the substrate 1.

[0086] The first encapsulation part 71 and the light-emitting unit 31 can be arranged in one-to-one correspondence, that is, one first encapsulation part 71 is used to encapsulate one light-emitting unit 31. The first encapsulation part 71 can be entirely arranged within the defined opening 23, or partially extend outside the defined opening 23. The edge of the first encapsulation part 71 abuts against the isolation structure 2 to avoid or reduce the formation of a water- and oxygen-permeable gap between the first encapsulation part 71 and the isolation structure 2.

[0087] Since the isolation structure 2 is provided in this application, the light-emitting units 31 can be spaced apart by the isolation structure 2, and the first encapsulation parts 71 arranged on one side of the light-emitting units 31 are spaced apart. One first encapsulation part 71 is used to encapsulate one light-emitting unit 31, thereby reducing or avoiding external water and oxygen from first passing through the opening 9 and then entering the light-emitting unit 31 through the connection interface between the first encapsulation part 71 and the adjacent functional layer.

[0088] In some embodiments, the orthographic projection of the first encapsulation part 71 on the substrate 1 does not overlap with the opening 9, that is, the first encapsulation part 71 does not form part of the wall surface of the opening 9, thereby reducing or avoiding external water and oxygen from entering the light-emitting unit 31 through the connection interface between the first encapsulation part 71 and the adjacent functional layer.

[0089] In some embodiments, at least part of the first encapsulation part 71 is located on the side of the isolation structure 2 away from the substrate 1 to ensure effective encapsulation of the entire light-emitting unit 31 by the first encapsulation part 71.

[0090] When manufacturing the display panel 100, a packaging material layer can be provided to cover the prepared light-emitting unit 31 and the second electrode 5, and then the packaging material layer is patterned to obtain the first encapsulation part 71 covering the prepared light-emitting unit 31 and the second electrode 5, and the light-emitting material and the conductive material not covered by the first encapsulation part 71 are removed. Thereby ensuring that the light-emitting units 31 and the second electrodes 5 are spaced apart from each other, and the first encapsulation part 71 effectively encapsulates the light-emitting unit 31 and the second electrode 5.

[0091] The light-emitting material and the conductive material located between the surfaces of the first encapsulation part 71 and the isolation structure 2 away from the substrate 1 are removed, so that there is a gap between the surfaces of the first encapsulation part 71 and the isolation structure 2 away from the substrate 1.

[0092] The display panel 100 further includes a second encapsulation layer 72. The second encapsulation layer 72 is located on the side of the first encapsulation layer away from the substrate 1, and the opening 9 penetrates through the second encapsulation layer 72.

[0093] The first encapsulation layer and the second encapsulation layer 72 may be made of the same or different materials. When the first encapsulation layer and the second encapsulation layer 72 are made of different materials, the first encapsulation layer and the second encapsulation layer 72 may have different properties to improve the comprehensive ability of the display panel 100 to resist water and oxygen. The first encapsulation layer may be made of an inorganic material, and the second encapsulation layer 72 may be made of an organic material.

[0094] The second encapsulation layer 72 prepared later can cover the first encapsulation layer prepared earlier, and the opening 9 penetrates the second encapsulation layer 72, so that when external water and oxygen enter the light-emitting unit 31 through the opening 9, they need to pass through the second encapsulation layer and the first encapsulation layer, thereby increasing the difficulty of external water and oxygen entering the light-emitting unit 31 through the opening 9, which is beneficial to isolating the light-emitting unit 31 from water and oxygen.

[0095] In some embodiments, there is a gap between adjacent first packaging parts 71, and the second packaging layer 72 includes a second packaging part 721 and a third packaging part 722 that are connected to each other. The second packaging part 721 is located on the side of the first packaging part 71 that is away from the substrate 1, and the third packaging part 722 is located in the gap and in contact with the surface of the isolation structure 2 that is away from the substrate 1, and the opening 9 passes through the third packaging part 722.

[0096] There is a gap between adjacent first packaging parts 71. When the second packaging material prepared later is formed on the substrate 1, part of the second packaging material is located on the side of the first packaging part 71 away from the substrate 1, forming the second packaging part 721, and part of the second packaging material is located on the side of the isolation structure 2 away from the substrate 1, forming the third packaging part 722. The second packaging part 721 extends along the edge of the first isolation part to the third packaging part 722, so that the second packaging part 721 and the third packaging part 722 have a height difference, which increases the external water and oxygen entering the light-emitting unit 31 from the contact interface between the second packaging layer 72 and the isolation structure 2 after passing through the opening 9.

[0097] In some embodiments, the display panel 100 further includes a third encapsulation layer 73 . The third encapsulation layer 73 is located on a side of the second encapsulation layer 72 away from the substrate 1 . The opening 9 passes through the third encapsulation layer 73 .

[0098] The third encapsulation layer 73 may be made of inorganic materials. When the third encapsulation layer 73 and the second encapsulation layer 72 are made of different materials, the third encapsulation layer 73 and the second encapsulation layer 72 may have different properties to improve the comprehensive ability of the display panel 100 to resist water and oxygen.

[0099] Optionally, the first encapsulation layer is prepared from an inorganic material, the second encapsulation layer 72 is prepared from an organic material, and the third encapsulation layer 73 is prepared from an inorganic material. The inorganic material may specifically be an inorganic material such as silicon nitride, silicon oxide, and silicon oxynitride, and may specifically be formed by a CVD (Chemical Vapor Deposition) process. The organic material may be made of a resin or a polymer organic material, and may specifically be formed by an IJP (Inkjet printing) process.

[0100] In some embodiments, the display panel 100 further includes a pixel definition layer 6. The pixel definition layer 6 is disposed on a side of the isolation structure 2 close to the substrate 1. The pixel definition layer 6 includes a plurality of pixel openings 61. The pixel openings 61 communicate with corresponding defining openings 23. At least a part of the light-emitting unit 31 is disposed in the pixel openings 61, and the opening 9 penetrates through the pixel definition layer 6.

[0101] The pixel definition layer 6 encloses to form the pixel openings 61. At least a part of the light-emitting unit 31 may be disposed in the pixel openings 61 to realize the light-emitting display of the display panel 100. The pixel openings 61 may be correspondingly disposed with the defining openings 23. The isolation structure 2 may be directly disposed on a side of the pixel definition layer 6 facing away from the substrate 1, and the isolation structure 2 is supported by the pixel definition layer 6.

[0102] The pixel definition layer 6 is disposed around the light-emitting unit 31 to isolate each light-emitting unit 31, thereby reducing or avoiding external water and oxygen from entering the light-emitting unit 31 through the opening 9.

[0103] In some embodiments, the opening 9 in the pixel definition layer 6 is spaced apart from the pixel openings 61, thereby preventing the light-emitting unit 31 located in the pixel openings 61 from being exposed to the opening 9.

[0104] In some embodiments, the orthographic projection of the pixel opening 61 on the substrate 1 is within the orthographic projection range of the defining opening 23 on the substrate 1. The orthographic projection of the pixel opening 61 on the substrate 1 being within the orthographic projection range of the defining opening 23 on the substrate 1 can reduce the influence of the isolation structure 2 on the light-emitting viewing angle of the light-emitting functional layer 3.

[0105] Optionally, there are a plurality of pixel openings 61, and the plurality of pixel openings 61 are spaced apart. The isolation structure 2 may be disposed on the pixel defining portion between at least some adjacent two pixel openings 61. Optionally, the isolation structure 2 may be disposed around at least some of the pixel openings 61.

[0106] Please refer to Figure 6 , in some embodiments, the display panel 100 further includes a touch layer 8. The touch layer 8 is located on a side of the light-emitting functional layer 3 facing away from the substrate 1, and the opening 9 penetrates through the touch layer 8.

[0107] The touch layer 8 enables the display device to perform touch operations. The touch layer 8 can be disposed on the light-emitting side of the light-emitting functional layer 3. In order to prevent the touch layer 8 from affecting the display of the light-emitting functional layer 3, the touch layer 8 can be prepared from a light-transmissive material. The opening 9 penetrates through the touch layer 8, thereby avoiding or reducing the stress concentration generated by the bending of the touch layer 8.

[0108] In some embodiments, the touch layer 8 includes a plurality of touch electrodes 81, and the orthographic projection of the touch electrodes 81 on the plane where the substrate 1 is located does not overlap with the orthographic projection of the opening 9 on the plane where the substrate 1 is located.

[0109] The touch electrodes 81 can be self-capacitive touch electrodes or mutual-capacitive touch electrodes. A plurality of self-capacitive touch electrodes are arranged at intervals in an array, and each self-capacitive touch electrode forms a self-capacitance with the ground. When a finger touches the touch structure, the capacitance of the finger will be superimposed on the self-capacitance, making the self-capacitance increase. Thus, the touch point can be determined through the self-capacitance. A plurality of mutual-capacitive touch electrodes are arranged in an array in a staggered manner, and a mutual-capacitance is formed between the mutual-capacitive touch electrodes. When a finger touches the touch structure, the mutual-capacitance decreases, thereby determining the touch point.

[0110] The orthographic projection of the touch electrodes 81 on the substrate 1 does not overlap with the opening 9, thereby preventing the opening 9 from exposing the touch electrodes 81 and preventing the touch electrodes 81 from directly contacting external moisture and air through the opening 9. This is beneficial to improving the service life of the touch electrodes 81. It can also prevent the exposed different touch electrodes 81 through the opening 9 from contacting in the bent display area AA2 after bending, and prevent unwanted electrical conduction between the touch electrodes 81.

[0111] Please refer to Figure 7 , in some embodiments, the distribution density of the light-emitting units 31 in the bent display area AA2 is less than the distribution density of the light-emitting units 31 in the non-bent display area AA1.

[0112] Compared with the distribution density of the light-emitting units 31 in the non-bent display area AA1, the distribution density of the light-emitting units 31 in the bent display area AA2 is smaller, so that more space can be reserved for arranging the openings 9 spaced from the light-emitting units 31.

[0113] In some embodiments, an opening 9 is provided between two adjacent light-emitting units 31 to improve the bending performance of the bent display area AA2. In some other embodiments, two light-emitting units 31 form a light-emitting pair, and an opening 9 is provided between two adjacent light-emitting pairs to increase the distribution density of the light-emitting units 31 in the bent display area AA2. Optionally, an opening 9 is provided every one, two, three or more light-emitting units 31.

[0114] In some embodiments, the plurality of openings 9 include a plurality of first openings 91 and a plurality of second openings 92. The first openings 91 extend along a first direction X, and the second openings 92 extend along a second direction Y. The plurality of first openings 91 and the plurality of second openings 92 are arranged at intervals. The first direction X and the second direction Y intersect. The first direction X and the second direction Y may be the extending directions of the display panel 100. It should be noted that the first direction X and the second direction Y are described based on the structure of the display panel 100 before the bent display area AA2 is bent.

[0115] The first openings 91 and the second openings 92 distributed on the substrate 11 may be strip-shaped. The first openings 91 are strip-shaped with the length direction along the first direction X, and the second openings 92 are strip-shaped with the length direction along the second direction Y. Optionally, the first direction X and the second direction Y are perpendicular.

[0116] In the display panel 100, the first openings 91 and the second openings 92 extending in different directions are provided, so that the stress generated by bending the bent display area AA2 in different directions can be released by the openings 9 extending in different directions. Optionally, the plurality of openings 9 further include a third opening, a fourth opening, a fifth opening, etc., and the extending directions of the respective openings 9 are different.

[0117] Exemplarily, the bent display area AA2 is annular. The opposite ends of the bent display area AA2 arranged along the first direction X are bent along a bending axis extending along the second direction Y, and the stress generated by bending this area can be released through the second openings 92; the opposite ends of the bent display area AA2 arranged along the second direction Y are bent along a bending axis extending along the first direction X, and the stress generated by bending this area can be released through the first openings 91.

[0118] In some embodiments, the plurality of first openings 91 arranged at intervals along the first direction X form a first opening group, and the plurality of first opening groups are arranged in sequence along the second direction Y. The plurality of second openings 92 arranged at intervals along the second direction Y form a second opening group, and the plurality of second opening groups are arranged in sequence along the first direction X.

[0119] The plurality of first opening groups are arranged in sequence along the second direction Y, and the plurality of second opening groups are arranged in sequence along the first direction X, so that the first openings 91 and the second openings 92 are evenly distributed in the bent display area AA2.

[0120] In some embodiments, the first openings 91 are provided between the second openings 92 adjacent to each other along the second direction Y, and the second openings 92 are provided between the first openings 91 adjacent to each other along the first direction X, so that the stress generated by bending the bent display area AA2 along different bending axes can be effectively released by the first openings 91 and the second openings 912.

[0121] In some embodiments, a plurality of light-emitting units 31 form a light-emitting unit group 30, and a plurality of light-emitting unit groups 30 are arranged in an array. A plurality of openings 9 surround the light-emitting unit group 30 and are spaced apart.

[0122] A light-emitting unit group 30 may include light-emitting units 31 for emitting lights of different colors. Optionally, the light-emitting unit group 30 includes a light-emitting unit 31 for emitting red light, a light-emitting unit 31 for emitting green light, and a light-emitting unit 31 for emitting blue light. A light-emitting unit group 30 may further include a plurality of light-emitting units 31 for emitting lights of the same color. Optionally, the light-emitting unit group 30 includes a light-emitting unit 31 for emitting red light, two light-emitting units 31 for emitting green light, and a light-emitting unit 31 for emitting blue light.

[0123] A plurality of openings 9 surround the light-emitting unit group 30 and are spaced apart, so that corresponding second electrodes 5 in adjacent light-emitting unit groups 30 can be electrically connected through the isolation structure 2, and the spacing distance between the light-emitting units 31 in a light-emitting unit group 30 can also be reduced. At the same time, the light-emitting units 31 in a light-emitting unit group 30 are concentrated together, further ensuring the display effect.

[0124] Please refer to Figure 8 , in some embodiments, the bent display area AA2 surrounds at least a part of the non-bent display area AA1, so that the edge of the display panel 100 can be bent relative to the non-bent display area AA1 to achieve a three-dimensional display effect.

[0125] The display panel 100 further includes a non-display area NA. The circuit traces for controlling the display panel 100 can extend from the display area AA to the non-display area NA and then be electrically connected to an external circuit through the non-display area NA. The display panel 100 further includes a bonding area BA. The bonding area is all or part of the non-display area NA, and the bonding area BA is used for electrically connecting to an external circuit.

[0126] In some embodiments, the bonding area BA is connected to the bent display area AA2.

[0127] Please refer to Figure 9 , in some embodiments, the display panel 100 has a first notch 101, and the first notch 101 surrounds at least a part of the non-bent display area AA1; a part of the bonding area BA is located within the first notch 101 and is connected to the non-bent display area AA1.

[0128] The first notch 101 may extend from the edge of the bent display area AA2 facing away from the non-bent display area AA1 towards the non-bent display area AA1. The provided first notch 101 is beneficial for the non-bent display area AA1 in a ring shape to be bent.

[0129] The bonding area BA can be directly connected to the bent display area AA2, or can be connected to the non-bent display area AA1 through the first notch 101.

[0130] Please refer to Figure 10 , in some embodiments, the number of non-bent display areas AA1 is multiple. The multiple non-bent display areas AA1 include a first display area AA11 and a second display area AA12. The second display area AA12 is arranged around the first display area AA11. The non-bent display area AA1 is located between the first display area AA11 and the second display area AA12 and connects the first display area AA11 and the second display area AA12.

[0131] When preparing the display panel 100, the first display area AA11, the corresponding area of the bent display area AA2, and the second display area AA12 that are coaxially arranged can be prepared in advance. The corresponding area of the bent display area AA2 is bent to form the bent display area AA2. The bent display area AA2 can be bent relative to the non-bent display area AA1 to achieve a three-dimensional display effect.

[0132] In some embodiments, the display panel 100 has a second notch 102, and the second notch 102 is arranged around at least part of the bent display area AA2.

[0133] The second notch 102 can extend from the edge of the second display area AA12 facing away from the non-first display area AA11 towards the first display area AA11. The arranged second notch 102 is beneficial for the annular second display area AA12 to cooperate with the bending form of the non-bent display area AA1.

[0134] In some embodiments, the display panel 100 further includes a bonding area BA, and the bonding area BA is connected to the second display area AA12.

[0135] Please refer to Figure 11 , in some other embodiments, part of the bonding area BA is located within the second notch 102 and is connected to the bent display area AA2.

[0136] The bonding area BA can be directly connected to the second display area AA12, or can be connected to the bent display area AA2 through the second notch 102.

[0137] Please refer to Figures 1 to 11 , in a second aspect, the embodiments of the present application further provide a method for preparing a display panel 100, including the following steps: S100, providing a substrate, the substrate having a connected first area and second area; S200, forming an isolation structure on one side of the substrate, the isolation structure surrounding a plurality of defined openings. The display panel has a plurality of openings arranged in the second area, and the openings penetrate at least part of the substrate and at least part of the isolation structure. The defined openings and the openings are arranged at intervals; S300, form a light-emitting functional layer on one side of the substrate. The light-emitting functional layer includes a plurality of light-emitting units, at least part of the light-emitting units is disposed within a defined opening, and the orthographic projection of the light-emitting unit on the plane where the substrate is located does not overlap with the orthographic projection of the opening on the plane where the substrate is located; S400, bend at least part of the second region, the second region forms a bent display area, and the first region forms a non-bent display area.

[0138] Before S200, the substrate 11 and the driving circuit layer 12 located on one side of the substrate 11 can also be formed by processes such as coating, curing, and film formation. The substrate 11 can be polyimide, polystyrene, polyethylene terephthalate, parylene, polyethersulfone, or polyethylene naphthalate.

[0139] In S300, film layers such as the electron injection layer, electron transport layer, hole blocking layer, light-emitting material layer, electron blocking layer, hole transport layer, and hole injection layer in the light-emitting unit 31 can be formed by evaporation deposition.

[0140] In some embodiments, the second region has a plurality of first openings; S200 includes: S210, sequentially form a first isolation material layer and a second isolation material layer on one side of the substrate. The first isolation material layer has a second opening communicating with the corresponding first opening, and the second isolation material layer has a third opening communicating with the corresponding second opening; S220, perform patterning on the second isolation material layer and the first isolation material layer to obtain a plurality of defined openings. The first isolation material layer forms a first isolation layer, and the second isolation material layer forms a second isolation layer; Wherein, the opening includes a first opening, a second opening, and a third opening that are connected.

[0141] In this embodiment, the substrate provided by S100 has a first opening provided in the second region.

[0142] In S200, to form the isolation structure 2, a first isolation material layer and a second isolation material layer can be sequentially formed on one side of the substrate 1 first. Since each material layer provided on the substrate 1 has an opening corresponding to the first opening at the first opening, the first opening and the corresponding other openings form a connected opening 9.

[0143] In S200, etch the second isolation material layer to form the second isolation layer 22, and etch the first isolation material layer to form the first isolation layer 21. Specifically, at least one of dry etching or wet etching processes can be used to etch and remove the first isolation material layer and the second isolation material layer respectively. In this application, the corresponding etching solvent is used for etching according to the specific materials of the first isolation material layer and the second isolation material layer, and there is no special limitation on the etching solvent.

[0144] S300 includes: S310, sequentially disposing a first light emitting material layer, a first conductive material layer, and a first packaging material layer on one side of the substrate, wherein at least parts of the first light emitting material layer, the first conductive material layer, and the first packaging material layer are located within the defined opening; S320, remove the first packaging material layer, the first light-emitting material layer and the first conductive material layer in part of the defined openings, the first light-emitting material layer in the remaining defined openings forms a light-emitting unit, the first conductive material layer on the side of the light-emitting unit away from the substrate forms a first electrode, and the first packaging material layer on the side of the light-emitting unit away from the substrate forms a first packaging portion.

[0145] S310 and S320 are executed to prepare a plurality of light-emitting units 31 for emitting light of any color, and the corresponding first electrodes 4 and first packaging parts 71, and S210 and S220 are executed again to prepare a plurality of light-emitting units 31 for emitting light of another color, and the corresponding first electrodes 4 and first packaging parts 71, and S210 and S220 are executed multiple times until all light-emitting units 31 of the required colors, and the corresponding first electrodes 4 and first packaging parts 71 are prepared. The plurality of first packaging parts 71 respectively package the light-emitting units 31.

[0146] In some other embodiments, the second region has a plurality of first openings; S200 includes: S230, sequentially forming a first isolation material layer and a second isolation material layer on one side of the substrate; S240, patterning the second isolation material layer and the first isolation material layer to obtain the multiple defined openings, wherein the defined openings penetrate the stacked first isolation layer and the second isolation layer; and forming the first isolation material layer into a first isolation layer having a second opening connected to the corresponding first opening, and forming the second isolation material layer into a second isolation layer having a third opening connected to the corresponding second opening, wherein the opening includes a first opening, a second opening and a third opening that are connected.

[0147] The first isolation material layer and the second isolation material layer are etched and removed to obtain a plurality of defined openings, and second openings and third openings connected to the corresponding first openings.

[0148] By performing opening processing on the corresponding material layers, the openings on the multiple material layers are connected to form open holes.

[0149] When preparing a display panel, an opening in a previously prepared film layer structure can be utilized, and a material layer prepared later directly forms an opening at this opening, which is connected to the opening in the previously prepared layer structure. Multiple openings are connected to form an opening. It is also possible to obtain an opening connected to the opening in the previously prepared layer structure by performing an opening process on one or more material layers.

[0150] Since the display panel 100 prepared in the embodiment of the second aspect of the present application includes the display panel 100 of any embodiment of the first aspect above, the display panel 100 prepared in the embodiment of the second aspect of the present application has the beneficial effects of the display panel 100 of the first aspect above, which will not be elaborated here.

[0151] In a third aspect, an embodiment of the present application further provides a display device, which has the display panel 100 of the first aspect above or the display panel 100 prepared in the embodiment of the second aspect.

[0152] The display device provided by the embodiment of the present application can be applied to mobile phones and can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiment of the present application does not make special limitations on this.

[0153] The above is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules, and units can refer to the corresponding processes in the foregoing method embodiments, which will not be elaborated here. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present application, and these modifications or substitutions should all be covered within the protection scope of the present application.

[0154] It should also be noted that the exemplary embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps. That is, the steps can be executed in the order mentioned in the embodiments, can be different from the order in the embodiments, or several steps can be executed simultaneously.

Claims

1. A display panel, characterized in that: The display panel comprises a bending display area and a non-bending display area connected to each other, and the display panel comprises: substrate; An isolation structure is disposed on one side of the substrate, and the isolation structure encloses a plurality of defined openings; The light-emitting functional layer comprises a plurality of light-emitting units, at least a portion of the light-emitting units being disposed in the corresponding defined openings; The display panel also has a plurality of openings arranged in the bent display area, the openings penetrate at least a portion of the substrate and at least a portion of the isolation structure, and the orthographic projection of the light-emitting unit on the surface where the substrate is located does not overlap with the orthographic projection of the openings on the surface where the substrate is located.

2. The display panel according to claim 1, characterized in that: The substrate comprises a substrate and a driving circuit layer, wherein the driving circuit layer is arranged on one side of the substrate; The driving circuit layer includes multiple conductive layers and insulating layers located between adjacent conductive layers. The openings penetrate the multiple insulating layers. The orthographic projection of any conductive layer on the surface where the substrate is located does not overlap with the orthographic projection of the openings on the surface where the substrate is located.

3. The display panel according to claim 1, characterized in that: The openings distributed on the isolation structure are spaced apart from the limited opening; The isolation structure comprises a first isolation layer and a second isolation layer which are stacked, wherein the first isolation layer is arranged on a side of the second isolation layer close to the substrate, and an orthographic projection of the first isolation layer on the substrate is located within an orthographic projection of the second isolation layer on the substrate; The opening penetrates the first isolation layer and the second isolation layer.

4. The display panel according to claim 1, characterized in that: The display panel also includes a first electrode layer, which includes a plurality of spaced first electrodes. The first electrodes are located on a side of the corresponding light-emitting unit close to the substrate, and the orthographic projection of the first electrode on the surface where the substrate is located is spaced apart from the orthographic projection of the opening on the surface where the substrate is located.

5. The display panel according to claim 1, characterized in that: The display panel further includes a second electrode layer, the second electrode layer includes a plurality of spaced second electrodes, at least a portion of the second electrode is disposed in the corresponding defined opening, the second electrode is located on a side of the corresponding light-emitting unit away from the substrate, and an orthographic projection of the second electrode on the surface where the substrate is located is spaced from an orthographic projection of the opening on the surface where the substrate is located; The second electrode is electrically connected to the isolation structure.

6. The display panel according to claim 1, characterized in that: The display panel further includes a first encapsulation layer, the first encapsulation layer includes a plurality of first encapsulation parts, at least a portion of the first encapsulation parts is located in the corresponding defined opening, the first encapsulation parts are arranged on a side of the corresponding light-emitting unit away from the substrate, and an orthographic projection of the first encapsulation part on the substrate covers an orthographic projection of the corresponding light-emitting unit on the substrate; The orthographic projection of the first packaging portion on the surface where the substrate is located does not overlap with the orthographic projection of the opening on the surface where the substrate is located.

7. The display panel according to claim 6, characterized in that: The display panel further includes a second encapsulation layer, the second encapsulation layer is located on a side of the first encapsulation layer away from the substrate, and the opening penetrates the second encapsulation layer; There is a gap between adjacent first encapsulation parts, the second encapsulation layer includes a second encapsulation part and a third encapsulation part connected to each other, the second encapsulation part is located on a side of the first encapsulation part away from the substrate, the third encapsulation part is located in the gap and in contact with a surface of the isolation structure away from the substrate, and the opening runs through the third encapsulation part; The display panel further includes a third encapsulation layer, the third encapsulation layer is located on a side of the second encapsulation layer away from the substrate, and the opening passes through the third encapsulation layer.

8. The display panel according to claim 1, characterized in that: The display panel further includes: A pixel definition layer is arranged on a side of the isolation structure close to the substrate, the pixel definition layer includes a plurality of pixel openings, the pixel openings are connected to the corresponding defined openings, at least part of the light emitting unit is arranged in the pixel openings, and the openings penetrate the pixel definition layer; the openings in the pixel definition layer are arranged at intervals from the pixel openings; The orthographic projection of the pixel opening on the substrate is located within the orthographic projection range of the limiting opening on the substrate.

9. The display panel according to claim 1, characterized in that: The display panel further includes a touch layer, the touch layer is located on a side of the light-emitting functional layer away from the substrate, and the opening passes through the touch layer; The touch layer includes a plurality of touch electrodes, and the orthographic projections of the touch electrodes on the surface where the substrate is located do not overlap with the orthographic projections of the openings on the surface where the substrate is located.

10. The display panel according to claim 1, characterized in that: The distribution density of the light-emitting units in the bending display area is less than the distribution density of the light-emitting units in the non-bending display area.

11. The display panel according to claim 1, characterized in that: The plurality of openings include a plurality of first openings and a plurality of second openings, the first openings extend along a first direction, the second openings extend along a second direction, the plurality of first openings and the plurality of second openings are arranged at intervals, and the first direction and the second direction intersect.

12. The display panel according to claim 11, characterized in that: A plurality of the first openings arranged at intervals along the first direction form a first opening group, and the plurality of the first opening groups are sequentially arranged along the second direction; a plurality of the second openings arranged at intervals along the second direction form a second opening group, and the plurality of the second opening groups are sequentially arranged along the first direction; The first opening is disposed between the second openings adjacent to each other along the second direction, and the second opening is disposed between the first openings adjacent to each other along the first direction.

13. The display panel according to claim 11, characterized in that: A plurality of the light-emitting units are combined to form a light-emitting unit group, and the plurality of light-emitting unit groups are arranged in an array; The plurality of openings surround the light emitting unit group and are arranged at intervals.

14. The display panel according to claim 1, characterized in that: The bent display area is disposed around at least a portion of the non-bent display area; The display panel also includes a binding area, wherein The binding area is connected to the bent display area; or, The display panel has a first notch, and the first notch is arranged around at least a portion of the non-bending display area; a portion of the binding area is located in the first notch and connected to the non-bending display area.

15. The display panel according to claim 1, characterized in that: There are multiple non-bending display areas, and the multiple non-bending display areas include a first display area and a second display area. The second display area is arranged around the first display area, and the bending display area is located between the first display area and the second display area and connects the first display area and the second display area.

16. The display panel according to claim 15, characterized in that: The orthographic projection of the first display area on the surface where the substrate is located is in a circular or elliptical shape; The display panel further includes a binding area, and the binding area is connected to the second display area; Alternatively, the display panel has a second notch, and the second notch is arranged around at least a portion of the bent display area; a portion of the binding area is located in the second notch.

17. A method for preparing a display panel, characterized in that: include: Providing a substrate having a first region and a second region connected to each other; An isolation structure is formed on one side of the substrate, the isolation structure encloses a plurality of defined openings, the display panel has a plurality of openings arranged in the second area, the openings penetrate at least a portion of the substrate and at least a portion of the isolation structure, and the defined openings are spaced apart from the openings; A light-emitting functional layer is formed on one side of the substrate, wherein the light-emitting functional layer includes a plurality of light-emitting units, at least a portion of the light-emitting units are disposed in the corresponding defined openings, and an orthographic projection of the light-emitting units on the surface where the substrate is located does not overlap with an orthographic projection of the opening on the surface where the substrate is located; At least a portion of the second region is bent, so that the second region forms a bent display area and the first region forms a non-bent display area.

18. The preparation method according to claim 17, characterized in that: The second region has a plurality of first openings; and forming an isolation structure on one side of the substrate comprises: Forming a first isolation material layer and a second isolation material layer in sequence on one side of the substrate, wherein the first isolation material layer has a second opening communicating with the corresponding first opening, and the second isolation material layer has a third opening communicating with the corresponding second opening; Performing patterning on the second isolation material layer and the first isolation material layer to obtain the plurality of defined openings, wherein the first isolation material layer forms a first isolation layer, and the second isolation material layer forms a second isolation layer; Wherein, the opening includes the first opening, the second opening and the third opening which are connected to each other.

19. The preparation method according to claim 17, characterized in that: The second region has a plurality of first openings; and forming an isolation structure on one side of the substrate comprises: forming a first isolation material layer and a second isolation material layer in sequence on one side of the substrate; The second isolation material layer and the first isolation material layer are patterned to obtain the multiple defined openings, and the second openings and the third openings connected to the corresponding first openings, the first isolation material layer forms a first isolation layer with the second openings, and the second isolation material layer forms a second isolation layer with the third openings, wherein the opening includes the first opening, the second opening and the third opening that are connected.

20. A display device, characterized in that: A display panel comprising the display panel according to any one of claims 1 to 16, or a display panel prepared by the method for preparing a display panel according to any one of claims 17 to 19.

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