Display panel, display device and method for manufacturing display panel

Abstract

The application 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 connected with each other, and comprises a substrate, an isolation structure and a light-emitting functional layer. The isolation structure is arranged on one side of the substrate and surrounds a plurality of limited openings. The light-emitting functional layer comprises a plurality of light-emitting units, and at least part of the light-emitting units are arranged in the corresponding limited openings. The display panel further comprises a plurality of openings arranged in the bending display area, the openings penetrating 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 substrate is not overlapped with the orthographic projection of the openings on the substrate. The display panel provided by the application has high product stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the display field, and in particular to a display panel, a display device and a preparation method of the display panel. BACKGROUND

[0002] Organic light emitting diode (OLED) and display panel based on light emitting diode (LED) technology are widely used in mobile phones, televisions, notebook computers, desktop computers and other consumer electronic products due to high image quality, power saving, thin body and wide application range, and become the mainstream in display devices. However, the preparation process of the current display panel needs to be improved. SUMMARY

[0003] Embodiments of the present application provide a display panel, a display device and a preparation method of the display panel, aiming to improve the technical problem of the preparation process of the related display panel.

[0004] The first aspect of the present application provides a display panel, the display panel comprising a bending display area and a non-bending display area connected, the display panel comprising:

[0005] a substrate;

[0006] an isolation structure disposed on one side of the substrate, the isolation structure enclosing a plurality of limited openings;

[0007] a light emitting functional layer comprising a plurality of light emitting units, at least part of the light emitting units being disposed in the corresponding limited openings;

[0008] The display panel further has a plurality of openings disposed in the bending display area, the openings penetrating 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 substrate does not overlap with the orthographic projection of the openings on the substrate.

[0009] According to the embodiment of the first aspect of the present application, the substrate comprises a substrate and a driving circuit layer, the driving circuit layer is disposed on one side of the substrate, the driving circuit layer comprises a plurality of conductive layers and an insulating layer between adjacent conductive layers, the opening penetrates a plurality of insulating layers, and the orthographic projection of any conductive layer on the substrate does not overlap with the opening.

[0010] According to the embodiment of the first aspect of the present application, the openings distributed on the isolation structure are spaced apart from the limited openings.

[0011] According to the embodiment of the first aspect of the present application, the isolation structure comprises a first isolation layer and a second isolation layer stacked, the first isolation layer is disposed on one side of the second isolation layer close to the substrate, and the orthographic projection of the first isolation layer on the substrate is located in the orthographic projection of the second isolation layer on the substrate.

[0012] According to an embodiment of the first aspect of the present application, the opening penetrates the first isolation layer and the second isolation layer;

[0013] According to an embodiment of the first aspect of the present application, an orthographic projection area of ​​a surface of the second isolation layer facing away from the substrate on the substrate is smaller than an orthographic projection area of ​​a surface of the second isolation layer close to the substrate on the substrate;

[0014] According to an embodiment of the first aspect of the present application, the orthographic projection area of ​​a surface of the first isolation layer facing away from the substrate on the substrate is smaller than the orthographic projection area of ​​a surface of the second isolation layer close to the substrate on the substrate.

[0015] According to an embodiment of the first aspect of the present application, the display panel also includes a first electrode layer, the first electrode layer includes a plurality of spaced first electrodes, the first electrode is located on the 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.

[0016] 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 including a plurality of spaced-apart second electrodes, at least portions of the second electrodes being disposed within corresponding defined openings, the second electrodes being located on a side of the corresponding light-emitting unit facing away from the substrate, and an orthographic projection of the second electrodes on a surface on which the substrate is located being spaced apart from an orthographic projection of the opening on a surface on which the substrate is located;

[0017] According to an embodiment of the first aspect of the present application, the second electrode is electrically connected to the isolation structure.

[0018] 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 including a plurality of first encapsulation portions, at least portions of the first encapsulation portions being located within corresponding defined openings, the first encapsulation portions being disposed on a side of the corresponding light-emitting unit facing away from the substrate, and an orthographic projection of the first encapsulation portion on the substrate covering an orthographic projection of the corresponding light-emitting unit on the substrate;

[0019] According to an embodiment of the first aspect of the present application, an orthographic projection of the first packaging portion 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.

[0020] According to an embodiment of the first aspect of the present application, at least a portion of the first encapsulation portion is located on a side of the isolation structure facing away from the substrate.

[0021] 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 a side of the first encapsulation layer facing away from the substrate, and the opening passes through the second encapsulation layer;

[0022] According to an embodiment of the first aspect of the present application, the display panel further comprises 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 penetrates the third encapsulation layer.

[0023] According to an embodiment of the first aspect of the present application, the display panel further comprises 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 penetrates the third encapsulation layer.

[0024] According to an embodiment of the first aspect of the present application, the display panel further comprises:

[0025] The pixel definition layer is arranged on a side of the isolation structure close to the substrate, and comprises a plurality of pixel openings. The pixel openings are in communication with the corresponding limited openings. At least part of the light emitting unit is arranged in the pixel opening. The opening penetrates the pixel definition layer. The opening in the pixel definition layer is arranged in the pixel opening. The orthogonal projection of the pixel opening on the substrate is located in the orthogonal projection range of the limited opening on the substrate.

[0026] According to an embodiment of the first aspect of the present application, the display panel further comprises a touch layer, the touch layer is located on a side of the light emitting functional layer away from the substrate, the opening penetrates the touch layer, and the orthogonal projection of the touch electrode on the substrate is not overlapped with the orthogonal projection of the opening on the substrate.

[0027] According to an embodiment of the first aspect of the present application, the distribution density of the light emitting unit in the bending display area is less than the distribution density of the light emitting unit in the non-bending display area.

[0028] According to an embodiment of the first aspect of the present application, the plurality of openings comprises 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. The first direction and the second direction intersect.

[0029] 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. A plurality of first opening groups are arranged in sequence along the second direction. A plurality of second openings arranged at intervals along the second direction form a second opening group. A plurality of second opening groups are arranged in sequence along the first direction.

[0030] The first opening is arranged between the second openings arranged adjacent along the second direction. The second opening is arranged between the first openings arranged adjacent along the first direction.

[0031] According to an embodiment of the first aspect of the present application, a plurality of light emitting unit groups combine to form a light emitting unit group. The plurality of light emitting unit groups are arranged in an array.

[0032] The plurality of openings are arranged at intervals around the light emitting unit group.

[0033] According to an embodiment of the first aspect of the present application, the bending display area is disposed around at least part of the non-bending display area, and the display panel further comprises a binding area connected with the bending display area.

[0034] According to an embodiment of the first aspect of the present application, the bending display area is disposed around at least part of the non-bending display area, and the display panel further comprises a binding area connected with the bending display area.

[0035] According to an embodiment of the first aspect of the present application, the number of the non-bending display areas is multiple, and the multiple non-bending display areas comprise a first display area and a second display area, the second display area is disposed around the first display area, and the non-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.

[0036] 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 a circle or an ellipse.

[0037] According to an embodiment of the first aspect of the present application, the display panel further comprises a binding area connected with the second display area.

[0038] Alternatively, the display panel has a second notch disposed around at least part of the bending display area, and part of the binding area is located in the second notch.

[0039] An embodiment of the second aspect of the present application provides a display panel manufacturing method, comprising:

[0040] A substrate is provided, the substrate has a first region and a second region connected with each other;

[0041] An isolation structure is formed on one side of the substrate, the isolation structure encloses multiple defined openings, the display panel has multiple openings disposed in the second region, the openings penetrate at least part of the substrate and at least part of the isolation structure, and the defined openings are disposed apart from the openings;

[0042] A light-emitting functional layer is formed on one side of the substrate, the light-emitting functional layer comprises multiple light-emitting units, at least part of the light-emitting units are disposed 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;

[0043] At least part of the second region is bent, the second region forms a bending display area, and the first region forms a non-bending display area.

[0044] According to an embodiment of the second aspect of the present application, the second region has multiple first openings; forming an isolation structure on one side of the substrate comprises:

[0045] The first isolation material layer has a second opening in communication with the corresponding first opening, and the second isolation material layer has a third opening in communication with the corresponding second opening;

[0046] The second isolation material layer and the first isolation material layer are subjected to a patterning process 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;

[0047] The opening includes the first opening, the second opening, and the third opening in communication.

[0048] According to the embodiment of the second aspect of the present application, forming the light-emitting functional layer on one side of the substrate includes:

[0049] The first light-emitting material layer, the first conductive material layer, and the first encapsulation material layer are sequentially arranged on one side of the substrate, and at least part of the first light-emitting material layer, the first conductive material layer, and the first encapsulation material layer are located in the defined opening;

[0050] The first encapsulation material layer, the first light-emitting material layer, and the first conductive material layer in part of the defined opening are removed, the first light-emitting material layer located in the remaining defined opening forms a light-emitting unit, the first conductive material layer located on the side away from the substrate of the light-emitting unit forms a first electrode, and the first encapsulation material layer located on the side away from the substrate of the light-emitting unit forms a first encapsulation part.

[0051] According to the embodiment of the second aspect of the present application, the second region has a plurality of first openings; forming the isolation structure on one side of the substrate includes:

[0052] The first isolation material layer and the second isolation material layer are sequentially formed on one side of the substrate;

[0053] The second isolation material layer and the first isolation material layer are subjected to a patterning process to obtain a plurality of defined openings, and the second opening and the third opening in communication with the corresponding first opening, the first isolation material layer forms a first isolation layer having the second opening, and the second isolation material layer forms a second isolation layer having the third opening, wherein the opening includes the second opening and the third opening in communication.

[0054] The embodiment of the third aspect of the present application provides a display device, which includes the display panel of any of the above embodiments or is prepared according to any of the above embodiments.

[0055] According to the display panel, the display device and the preparation method of the display panel provided in the embodiments of the present application, a plurality of openings are arranged in the bending display area, and the openings penetrate through at least part of the substrate and at least part of the isolation structure, so that the openings can provide a relief space for the bending display area, and stress concentration in the bending display area is avoided; when the display panel is subjected to tensile stress and compressive stress, the stress can be released through the openings, and the service life of the display panel is improved; the orthographic projection of the light emitting unit on the substrate is not overlapped with the orthographic projection of the opening on the substrate, so that any area of the light emitting unit is not exposed by the opening, external water vapor, air and the like are avoided or reduced from entering the light emitting unit through the opening, and the service life of the light emitting unit is improved. BRIEF DESCRIPTION OF DRAWINGS

[0056] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof as taken in conjunction with the accompanying drawings, in which like references denote like features, and in which:

[0057] Figure 1 is a top view of a display panel provided by an embodiment of the present application;

[0058] Figure 2 is a cross-sectional view of a display panel provided by an embodiment of the present application;

[0059] Figure 3 is a partial cross-sectional view of a display panel provided by an embodiment of the present application;

[0060] Figure 4 is a partial cross-sectional view of a display panel provided by an embodiment of the present application;

[0061] Figure 5 is a partial cross-sectional view of a display panel provided by an embodiment of the present application;

[0062] Figure 6 is a partial cross-sectional view of a display panel provided by an embodiment of the present application;

[0063] Figure 7 is a partial top view of a display panel provided by an embodiment of the present application;

[0064] Figure 8 is a top view of a display panel provided by an embodiment of the present application;

[0065] Figure 9 is a top view of a display panel provided by an embodiment of the present application;

[0066] Figure 10 is a top view of a display panel provided by an embodiment of the present application;

[0067] Figure 11 is a top view of a display panel provided by an embodiment of the present application.

[0068] Legend of reference signs:

[0069] 100, display panel; AA1, non-bending display area; AA11, first display area; AA12, second display area; AA2, bending display area; NA, non-display area; BN, binding area; 101, first notch; 102, second notch;

[0070] 1, substrate; 11, substrate; 12, driving circuit layer; 121, conductive layer; 122, insulating layer;

[0071] 2, isolation structure; 21, first isolation layer; 22, second isolation layer; 23, defined opening; 24, third isolation layer;

[0072] 3, light-emitting functional layer; 31, light-emitting unit;

[0073] 4, first electrode; 5, second electrode;

[0074] 6, pixel definition layer; 61, pixel opening;

[0075] 71, first encapsulation layer; 72, second encapsulation layer; 721, second encapsulation layer; 722, third encapsulation layer; 73, third encapsulation layer;

[0076] 8, touch layer; 81, touch electrode;

[0077] 9, aperture; 91, first aperture; 92, second aperture; 93, cover plate;

[0078] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0079] The features and exemplary embodiments of various aspects of the present application will be described in detail below, in order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are configured only to explain the present application and are not configured to limit the present application. The present application can be implemented without some of these specific details by those skilled in the art. The following description of the embodiments is merely to provide a better understanding of the present application by showing examples of the present application.

[0080] It is to be understood that the terminology "on," "over," and "under" used in this document, when referring to the positioning of one layer, one region, etc. relative to another layer, another region, etc., can refer to a direct positioning of the one layer, one region, etc. on, over, or under the other layer, other region, etc., or can refer to an indirect positioning with one or more other layers, regions, etc. in between. Also, if the one layer, one region, etc. is flipped, it will be positioned "under" or "beneath" the other layer, other region, etc.

[0081] It should be understood that when describing the structure of a component, when one layer, one region is referred to as being "on" or "over" another layer, another region, it can mean directly on or over the other layer, the other region, or can contain other layers or regions therebetween. Also, if the one layer, one region is flipped, it will be positioned "under" or "beneath" the other layer, the other region.

[0082] In the related art, a partial region of a display panel is bent to adapt the display panel to electronic devices with different shapes. In the process of bending the display panel, the display panel will be damaged due to stress concentration when being bent, affecting the product stability and service life of the display panel.

[0083] To solve the above problems, the embodiments of the present application provide a display panel, a preparation method of the display panel, and a display device. The embodiments of the display panel, the preparation method of the display panel, and the display device will be described below with reference to the accompanying drawings.

[0084] The embodiments of the present application provide a display panel, a preparation method of the display panel, and a display device. The embodiments of the display panel, the preparation method of the display panel, and the display device will be described below with reference to the accompanying drawings. Figures 1 to 11 The embodiments of the display panel, the preparation method of the display panel, and the display device will be described below with reference to the accompanying drawings.

[0085] Please refer to Figure 1 , Figure 2 Figure 3The display panel 100 includes a bending display area AA2 and a non-bending display area AA1 connected to each other. The display panel 100 includes a substrate 1, a separation structure 2, and a light-emitting functional layer 3. The separation structure 2 is arranged on one side of the substrate 1 and surrounds a plurality of limited openings 23. The light-emitting functional layer 3 includes a plurality of light-emitting units 31, at least part of the light-emitting units 31 being arranged in the corresponding limited openings 23. The display panel 100 further includes a plurality of apertures 9 arranged in the bending display area AA2. The apertures 9 penetrate at least part of the substrate 1 and at least part of the separation structure 2. The orthographic projection of the light-emitting units 31 on the substrate 1 does not overlap the orthographic projection of the apertures 9 on the substrate 1.

[0086] The display panel 100 provided in the embodiments of the present application can be an organic light-emitting diode (OLED) display panel. The separation structure 2 is described in detail in the patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, and PCT / CN2024 / 099072, which are incorporated herein by reference.

[0087] The display panel 100 provided in the embodiments of the present application includes a bending display area AA2 and a non-bending display area AA1. At least part of the bending display area AA2 is curved into an arc shape, so that the display panel 100 can provide a stereoscopic display effect. The bending display area AA2 can be arranged around the non-bending display area AA1. Different regions of the bending display area AA2 can be bent along bending axes with different directions.

[0088] In the display panel 100 provided in the embodiments of the present application, the substrate 1 not only provides support for the separation structure 2, but also provides electrical signals for the light-emitting functional layer. The substrate 1 can be arranged in various ways. In some embodiments, the substrate 1 can include a substrate 11 and a driving circuit layer 12 arranged 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 the bending of the bending display area AA2. The flexible material includes, but is not limited to, polyimide (PI), polyethylene terephthalate (PET), and the like. The driving circuit layer 12 can include pixel driving circuits, light sensing circuits, and the like. For example, the pixel driving circuit arranged 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 plate and a second plate. As an example, the gate and the first plate can be located on the same conductive layer 121, the second plate can be located on another conductive layer 121, and the drain and the source can be located on another conductive layer 121.

[0089] The isolation structure 2 defines the opening 23 to define the arrangement range of the light emitting unit 31, and the adjacent openings 23 can be spaced by the isolation structure 2. Optionally, the isolation structure 2 is in a grid shape, and the openings 23 are arranged in an array to improve the light emitting uniformity of the arranged light emitting unit 31.

[0090] The number of the openings 23 can correspond to the number of the light emitting units 31. The plurality of light emitting units 31 can be light emitting units 31 capable of emitting light of different colors. For example, the light emitting units 31 can be red light emitting units capable of emitting red light, green light emitting units capable of emitting green light, and blue light emitting units capable of emitting blue light. In the case where the light emitting functional layer has a plurality of light emitting units 31, the plurality of openings 23 include openings corresponding to the various light emitting units 31, and the shapes and sizes of the openings 23 for placing different light emitting units 31 can be consistent or inconsistent.

[0091] In the preparation of the display panel 100, one or more material layers can be subjected to a patterning process to obtain the aforementioned opening 9. In the preparation of the display panel 100, a plurality of first openings can be formed in the flat substrate 11 corresponding to the portion of the bending display area AA2, and then a plurality of material layers can be sequentially arranged on the substrate 11 having the first openings to obtain the flat display panel 100. Each of the subsequently prepared material layers has other openings corresponding to the first openings, and the connected first openings and other openings form the opening 9 penetrating the substrate 1 and the isolation structure 2. The portion of the flat display panel 100 corresponding to the bending display area AA2 is bent to obtain the bending display area AA2 bent relative to the non-bending display area AA1. The opening 9 can provide a relief space for the bending display area AA2 to avoid stress concentration in the bending display area AA2; when the display panel 100 is subjected to tensile stress and compressive stress, the stress can be released through the opening 9.

[0092] The plurality of light emitting units 31 are arranged in the bending display area AA2 and the non-bending display area AA1, so that the bending display area AA2 and the non-bending display area AA1 can both emit light for display. The orthographic projection of the light emitting unit 31 on the plane of the substrate 1 does not overlap the orthographic projection of the opening 9 on the plane of the substrate 1, so as to ensure that any area of the light emitting unit 31 is not exposed by the opening 9, which is conducive to the water and oxygen isolation of the light emitting unit 31.

[0093] In the present application, the orthographic projection is a projection along the third direction Z, which can be the direction from the substrate 1 to the light emitting unit 31, or the thickness direction of the display panel 100. The opening 9 can extend along the third direction Z. It should be noted that, for ease of understanding, the orthographic projection in the present application is described based on the structure of the display panel 100 before the bending display area AA2 is bent.

[0094] In the present application, by providing a plurality of openings 9 located at the bending display area AA2, and the openings 9 penetrating the substrate 1 and the isolation structure 2, the openings 9 can provide a relief space for the bending display area AA2 to avoid stress concentration of the bending 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 the opening 9, so as to ensure that any area of the light emitting unit 31 is not exposed by the opening 9, thereby avoiding or reducing the entry of external water vapor, air and the like into the light emitting unit 31 through the opening 9, and improving the service life of the light emitting unit 31.

[0095] In some embodiments, the display panel 100 further comprises a cover plate 93 located on the side of the light emitting functional layer 3 away from the substrate 1, and the cover plate 93 covers one side of the opening 9 to reduce the entry of external impurities into the opening 9.

[0096] In some embodiments, the substrate 1 comprises a substrate 11 and a driving circuit layer 12, the driving circuit layer 12 is provided on one side of the substrate 11, and the opening 9 penetrates the substrate 11 and the driving circuit layer 12.

[0097] The driving circuit layer 12 can comprise a plurality of conductive layers 121 and a plurality of insulating layers 122, so that adjacent conductive layers 121 are electrically connected through vias provided on the insulating layers 122 to obtain the required driving circuit. The opening 9 penetrates the substrate 11 and the driving circuit layer 12, so that the stress of each film layer in the entire substrate 11 and the driving circuit layer 12 can be released through the opening 9.

[0098] In some embodiments, the driving circuit layer 12 comprises a plurality of conductive layers 121 and an insulating layer 122 located between adjacent conductive layers 121, and the opening 9 penetrates the plurality of insulating layers 122, and the orthographic projection of any conductive layer 121 on the substrate 11 does not overlap the orthographic projection of the opening 9 on the substrate 11.

[0099] The plurality of patterned conductive layers 121 form the aforementioned thin film transistors, storage capacitors and other devices through spacing, via connection and the like, and the insulating layer 122 is provided between adjacent conductive layers 121 to electrically isolate adjacent conductive layers 121. By arranging that the orthographic projection of any conductive layer 121 on the substrate 11 does not overlap the opening 9, the opening 9 is prevented from exposing the conductive layer 121, and the conductive layer 121 is prevented from being directly exposed to external water vapor and air through the opening 9, which is conducive to improving the service life of the conductive layer 121, and also prevents different conductive layers 121 or different parts of the same conductive layer 121 exposed through the opening 9 from contacting each other in the bending display area AA2 after bending, thereby preventing the electrical conduction of conductive structures that do not need to be electrically connected.

[0100] In some embodiments, the plurality of insulating layers 122 are sequentially stacked to form part of the wall surface of the opening 9.

[0101] The insulating layers 122 can be formed in sequence along the first direction X on the substrate 11 having the first openings by deposition, coating, or the like, and the insulating layer 122 formed later covers the conductive layer 121 formed earlier, and the insulating material used to form the insulating layer 122 forms openings in sequence along the third direction Z at positions corresponding to the first openings, and the first openings and the openings in sequence along the third direction Z communicate to form at least part of the opening 9, the wall surface of the part of the substrate 11 where the opening 9 is located is formed by the substrate 11. The wall surface of the part of the driving circuit layer 12 where the opening 9 is located is formed by the insulating layers 122 stacked in sequence along the third direction Z.

[0102] In some embodiments, the openings 9 distributed on the isolation structure 2 are spaced apart from the defined openings 23.

[0103] The isolation structure 2 encloses the defined openings 23, and at least part of the light emitting unit 31 is arranged in the corresponding defined opening 23, and the isolation structure 2 can be spaced apart between adjacent light emitting units 31, so as to avoid carrier crosstalk between adjacent light emitting units 31. The openings 9 distributed on the isolation structure 2 are spaced apart from the defined openings 23, so as to avoid direct communication between the openings 9 and the defined openings 23, and to reduce or avoid the entry of external water and oxygen into the light emitting unit 31 through the openings 9.

[0104] For reference, please see Figure 4 In some embodiments, the isolation structure 2 includes a first isolation layer 21 and a second isolation layer 22 stacked in sequence, the first isolation layer 21 is arranged 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.

[0105] 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 away 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 of the isolation structure 2 to the substrate 1, the second isolation layer 22 completely shields the first isolation layer 21. For example, the cross section of the isolation structure 2 is T-shaped.

[0106] When the light emitting unit 31 is prepared, the light emitting material A used 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 shields the first isolation layer 21, the light emitting material A used for preparing the light emitting unit 31 has a large difference at the edge of the second isolation layer 22, and the light emitting material A falling in the defined opening 23 and the light emitting material A falling on the second isolation layer 22 are difficult to connect, thereby breaking and forming the light emitting material A arranged at intervals in the adjacent defined opening 23. Compared with the related art, the light emitting unit 31 is prepared by evaporation through a precise mask plate. In the present application, the first isolation layer 21 and the second isolation layer 22 are arranged, so that the light emitting unit 31 located in the defined opening 23 can be prepared without a precise metal mask plate, thereby saving the cost of the precise metal mask plate. Compared with the preparation of the light emitting unit 31 by evaporation through the preparation of a precise 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 by the present application has low requirements on the preparation process, and the consistency of the prepared display panel 100 is good. The light emitting material A can be a complex containing indium element.

[0107] In some embodiments, the opening 9 penetrates the first isolation layer 21 and the second isolation layer 22.

[0108] The sizes of the first isolation layer 21 and the second isolation layer 22 are different, and the opening 9 penetrates the first isolation layer 21 and the second isolation layer 22 to ensure the spacing between the opening 9 and the light emitting unit 31.

[0109] The second isolation layer 22 extends outwardly relative to the first isolation layer 21 by a predetermined distance, that is, the area of the orthographic projection of the surface of the second isolation layer 22 away from the substrate 1 on the substrate 1 is smaller than the area of the orthographic projection 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 slope structure to facilitate defining the pattern of the light emitting unit 31 by the second isolation layer 22.

[0110] In some embodiments, the second isolation layer 22 protrudes relative to the first isolation layer 21 towards the center of the opening 9. When the isolation structure 2 is prepared, the first isolation material layer and the second isolation material layer are sequentially arranged, then the second isolation material layer is etched to form the second isolation layer 22, and then the first isolation material layer is wet etched to form the first isolation layer 21. By controlling the rate of wet etching, the second isolation layer 22 protrudes relative to the first isolation layer 21 towards the center of the defined opening 23, and at the same time, the first isolation material forming part of the wall surface of the opening 9 also contacts the etching liquid, so that at the distribution of the opening 9, the second isolation layer 22 protrudes relative to the first isolation layer 21 towards the center of the opening 9.

[0111] Of course, in some embodiments, the side walls of the first isolation layer 21 and the second isolation layer 22 at the opening 9 are flush.

[0112] In some embodiments, the cross-sectional area of the second isolation layer 22 gradually decreases in the direction away from the substrate 1.

[0113] 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 edge of the isolation structure 2, forming a state where part of the preparation material is on the second isolation layer 22 and part of the preparation material is in the opening 23.

[0114] In some embodiments, the area of the surface of the first isolation layer 21 away from the substrate 1 on the substrate 1 is smaller than the area of the surface of the second isolation layer 22 close to the substrate 1 on the substrate 1.

[0115] 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 by 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 first isolation layer 21 is recessed relative to the second isolation layer 22 in the direction away from the opening 23. When the light emitting unit 31 is prepared, at least part of the material used to prepare the light emitting unit 31 has a large difference at the edge of the isolation structure 2, and the first isolation layer 21 is recessed, so that the material used to prepare the light emitting unit 31 is difficult to connect on the outside of the isolation structure 2, thereby breaking and forming mutually isolated light emitting units 31.

[0116] Please refer to Figure 5 In some embodiments, the isolation structure 2 includes a third isolation layer 24, which is located on the 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 within the orthographic projection of the third isolation layer 24 on the substrate 1, and the opening 9 penetrates the third isolation layer 24. The cross-section of the isolation structure 2 can be an I-shaped cross-section.

[0117] Optionally, the area of the orthographic projection of the first isolation layer 21 on the substrate 1 is smaller than the area of the orthographic projection of the third isolation layer 24 on the substrate 1.

[0118] The cross-section of the first isolation layer 21 can be a trapezoid, which increases the size of the opening 23. The cross-section of the first isolation layer 21 can be a right trapezoid, which can stably support the second isolation layer 22 and reduce the contact area between the first isolation layer 21 and the second isolation layer 22.

[0119] 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 the inward recess of the first isolation layer 21 relative to the second isolation layer 22 in the direction away from the central axis of the defined opening 23, facilitating the disconnection of the light-emitting functional layer at the isolation structure 2, and facilitating the cleaning of the etching waste generated by etching the first isolation layer 21 on the third isolation layer 24.

[0120] 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.

[0121] Please refer to Figure 3 In some embodiments, the display panel 100 further comprises a first electrode layer, the first electrode layer comprises a plurality of spaced first electrodes 4, the first electrodes 4 are located on the side of the light-emitting units 31 close to the substrate 1, and the orthographic projection of the first electrodes 4 on the substrate 1 is spaced from the orthographic projection of the openings 9 on the substrate 1.

[0122] 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 comprises a plurality of first electrodes 4, which can be arranged to be insulated from each other. The display panel 100 can further comprise 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 can be a cathode, and the other can be an anode. The first electrode 4 and the second electrode 5 are respectively connected with the light-emitting unit 31 and 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.

[0123] The orthographic projection of the first electrodes 4 on the substrate 1 is spaced from the orthographic projection of the openings 9 on the substrate 1, thereby avoiding the exposure of the first electrodes 4 by the openings 9, avoiding the direct contact of the first electrodes 4 with external water vapor and air through the openings 9, and facilitating the improvement of the service life of the first electrodes 4. It can also avoid the contact of different first electrodes 4 exposed through the openings 9 after bending in the bending display area AA2, and avoid the electrical conduction between adjacent first electrodes 4.

[0124] In some embodiments, the display panel 100 further comprises a second electrode layer, the second electrode layer comprises a plurality of spaced second electrodes 5, at least part of the second electrodes 5 are arranged in the corresponding defined openings 23, and the second electrodes 5 are located on the side of the corresponding light-emitting units 31 away from the substrate 1. The orthographic projection of the second electrodes 5 on the substrate 1 is spaced from the orthographic projection of the openings 9 on the substrate 1.

[0125] The second electrode 5 is arranged at a position spaced from the orthogonal projection of the opening 9 on the substrate 1, so as to avoid the opening 9 exposing the second electrode 5, avoid the second electrode 5 directly contacting external water vapor and air through the opening 9, and facilitate improving the service life of the second electrode 5. In addition, the second electrodes 5 exposed through the opening 9 can be prevented from contacting each other in the bent display area AA2 after bending, so as to avoid the electrical conduction between adjacent second electrodes 5.

[0126] In some embodiments, the second electrode 5 is electrically connected to the isolation structure 2.

[0127] The second electrode 5 can be electrically connected to an external circuit by being overlapped with the isolation structure 2. A plurality of second electrodes 5 can also be electrically connected to each other by being overlapped with the isolation structure 2.

[0128] In some embodiments, the second electrodes 5 distributed on opposite sides of the opening 9 are electrically connected through the isolation structure 2.

[0129] The opening 9 penetrates the isolation structure 2. When the opening 9 does not surround the second electrode 5, the second electrodes 5 distributed on opposite sides of the opening 9 can be electrically connected through the isolation structure 2.

[0130] In some embodiments, the display panel 100 further includes a first encapsulation layer, the first encapsulation layer includes a plurality of first encapsulation portions 71, at least part of the first encapsulation portion 71 is located in the corresponding defined opening 23, the first encapsulation portion 71 is arranged on a side of the corresponding light emitting unit 31 away from the substrate 1, and the orthogonal projection of the first encapsulation portion 71 on the substrate 1 covers the orthogonal projection of the light emitting unit 31 on the substrate 1.

[0131] The first encapsulation portion 71 and the light emitting unit 31 can be arranged one by one, that is, one first encapsulation portion 71 is used for encapsulating one light emitting unit 31. The first encapsulation portion 71 can be arranged entirely within the defined opening 23, or can extend partially to the outside of the defined opening 23. The edge of the first encapsulation portion 71 is overlapped with the isolation structure 2, so as to avoid or reduce the gap through which water and oxygen can pass between the first encapsulation portion 71 and the isolation structure 2.

[0132] Due to the arrangement of the isolation structure 2, the light emitting units 31 are spaced by the isolation structure 2, the first encapsulation portions 71 arranged on one side of the light emitting units 31 are spaced, and one first encapsulation portion 71 is used for encapsulating one light emitting unit 31, so as to reduce or avoid external water and oxygen first passing through the opening 9 and then passing through the connection interface between the first encapsulation portion 71 and the adjacent functional layer into the light emitting unit 31.

[0133] In some embodiments, the first encapsulation part 71 does not overlap with the opening 9 in the orthographic projection of the substrate 1, i.e., the first encapsulation part 71 does not constitute a partial wall of the opening 9, thereby reducing or avoiding the external water and oxygen entering the light emitting unit 31 through the connecting interface between the first encapsulation part 71 and the adjacent functional layer.

[0134] 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, so as to ensure that the first encapsulation part 71 effectively encapsulates the entire light emitting unit 31.

[0135] In the preparation of the display panel 100, the encapsulation material layer can be arranged to cover the prepared light emitting unit 31 and the second electrode 5, and then the encapsulation material layer is subjected to a patterning process 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. Thus, the light emitting units 31 and the second electrode 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.

[0136] The light emitting material and the conductive material between the first encapsulation part 71 and the surface of the isolation structure 2 away from the substrate 1 are removed, so that a gap is formed between the first encapsulation part 71 and the surface of the isolation structure 2 away from the substrate 1.

[0137] The display panel 100 further comprises 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 the second encapsulation layer 72.

[0138] The first encapsulation layer and the second encapsulation layer 72 can be prepared by using the same or different materials. In the case that the first encapsulation layer and the second encapsulation layer 72 are prepared by using different materials, the first encapsulation layer and the second encapsulation layer 72 can have different properties to improve the comprehensive ability of the display panel 100 to resist water and oxygen. The first encapsulation layer can be prepared by using inorganic material, and the second encapsulation layer 72 can be prepared by using organic material.

[0139] 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 the 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 the external water and oxygen entering the light emitting unit 31 through the opening 9, which is conducive to isolating the water and oxygen from the light emitting unit 31.

[0140] In some embodiments, the second encapsulation layer 72 comprises a second encapsulation part 721 and a third encapsulation part 722 connected to each other, the second encapsulation part 721 is located on the side of the first encapsulation part 71 away from the substrate 1, the third encapsulation part 722 is located in the gap and in contact with the surface of the isolation structure 2 away from the substrate 1, and the opening 9 penetrates the third encapsulation part 722.

[0141] The gap is between the adjacent first encapsulation portions 71. When the second encapsulation material is formed on the substrate 1, part of the second encapsulation material is located on the side of the first encapsulation portion 71 away from the substrate 1 to form a second encapsulation portion 721, and part of the second encapsulation material is located on the side of the isolation structure 2 away from the substrate 1 to form a third encapsulation portion 722. The second encapsulation portion 721 extends along the edge of the first isolation portion to the third encapsulation portion 722, so that the second encapsulation portion 721 and the third encapsulation portion 722 have a difference, which increases the water and oxygen entering the light emitting unit 31 from the contact interface between the second encapsulation layer 72 and the isolation structure 2 after passing through the opening 9.

[0142] In some embodiments, the display panel 100 further includes a third encapsulation layer 73 located on the side of the second encapsulation layer 72 away from the substrate 1, and the opening 9 penetrates the third encapsulation layer 73.

[0143] The third encapsulation layer 73 can be made of inorganic material. 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 can have different properties to improve the comprehensive ability of the display panel 100 to resist water and oxygen.

[0144] Optionally, the first encapsulation layer is made of inorganic material, the second encapsulation layer 72 is made of organic material, and the third encapsulation layer 73 is made of inorganic material. The inorganic material can be made of inorganic materials such as silicon nitride, silicon oxide, and silicon oxynitride, and can be formed by a CVD (Chemical Vapor Deposition) process. The organic material can be made of resin or high molecular organic material, and can be formed by an IJP (Inkjet printing) process.

[0145] In some embodiments, the display panel 100 further includes a pixel definition layer 6 disposed on the 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 are in communication with the corresponding defined openings 23, at least part of the light emitting unit 31 is disposed in the pixel openings 61, and the opening 9 penetrates the pixel definition layer 6.

[0146] The pixel definition layer 6 encloses the pixel openings 61. The light emitting unit 31 can be at least partially disposed in the pixel openings 61 to realize the light emitting display of the display panel 100, and the pixel openings 61 can be disposed corresponding to the defined openings 23. The isolation structure 2 can be directly disposed on the side of the pixel definition layer 6 away from the substrate 1, and the isolation structure 2 is supported by the pixel definition layer 6.

[0147] The pixel definition layer 6 is arranged around the light emitting unit 31 to isolate the light emitting unit 31, thereby reducing or avoiding the external water oxygen entering the light emitting unit 31 through the opening 9.

[0148] In some embodiments, the opening 9 in the pixel definition layer 6 is spaced from the pixel opening 61, thereby avoiding the light emitting unit 31 in the pixel opening 61 being exposed to the opening 9.

[0149] In some embodiments, the orthographic projection of the pixel opening 61 on the substrate 1 is located in the range of the orthographic projection of the limiting opening 23 on the substrate 1, and the orthographic projection of the pixel opening 61 on the substrate 1 is located in the range of the orthographic projection of the limiting opening 23 on the substrate 1, which can reduce the influence of the isolation structure 2 on the light emitting function layer 3 light emitting viewing angle.

[0150] Optionally, the pixel opening 61 is a plurality of pixel openings 61, and the plurality of pixel openings 61 are spaced apart, and the isolation structure 2 can be arranged on the pixel definition part between at least part of two adjacent pixel openings 61. Optionally, the isolation structure 2 can be arranged around at least part of the pixel opening 61.

[0151] Please refer to Figure 6 In some embodiments, the display panel 100 further comprises a touch layer 8, and the touch layer 8 is located on the side of the light emitting function layer 3 away from the substrate 1, and the opening 9 penetrates the touch layer 8.

[0152] The touch layer 8 enables the display device to perform touch operation, and the touch layer 8 can be arranged on the light emitting side of the light emitting function layer 3. In order to avoid the influence of the touch layer 8 on the display of the light emitting function layer 3, the touch layer 8 can be made of a light-transmitting material. The opening 9 penetrates the touch layer 8, thereby avoiding or reducing the stress concentration caused by the bending of the touch layer 8.

[0153] In some embodiments, the touch layer 8 comprises a plurality of touch electrodes 81, and the orthographic projection of the touch electrode 81 on the substrate 1 does not overlap with the orthographic projection of the opening 9 on the substrate 1.

[0154] The touch electrode 81 can be a self-capacitive touch electrode or a mutual-capacitive touch electrode. The plurality of self-capacitive touch electrodes are arranged in an array, and each self-capacitive touch electrode and the ground form a self-capacitance. When a finger touches the touch structure, the capacitance of the finger will be superimposed on the self-capacitance, so that the self-capacitance becomes larger, and thus the touch point can be determined by the self-capacitance. The plurality of mutual-capacitive touch electrodes are arranged in an array in a staggered manner, and the mutual-capacitive touch electrodes form mutual-capacitances therebetween. When a finger touches the touch structure, the mutual-capacitance decreases, thereby determining the touch point.

[0155] The projection of the touch electrode 81 on the substrate 1 does not overlap with the opening 9, so as to avoid exposing the touch electrode 81 through the opening 9, avoid the touch electrode 81 directly contacting with external water vapor and air through the opening 9, and improve the service life of the touch electrode 81. In addition, the different touch electrodes 81 exposed through the opening 9 can be prevented from contacting with each other after the bending of the bending display area AA2, so as to avoid the unwanted electrical conduction between the touch electrodes 81.

[0156] Please refer to Figure 7 In some embodiments, the distribution density of the light emitting units 31 in the bending display area AA2 is less than the distribution density of the light emitting units 31 in the non-bending display area AA1.

[0157] Compared with the distribution density of the light emitting units 31 in the non-bending display area AA1, the distribution density of the light emitting units 31 in the bending display area AA2 is smaller, so as to reserve more space for arranging the opening 9 spaced from the light emitting units 31.

[0158] In some embodiments, the opening 9 is arranged between two adjacent light emitting units 31, so as to improve the bending performance of the bending display area AA2. In other embodiments, two light emitting units 31 form a light emitting pair, and the opening 9 is arranged between two adjacent light emitting pairs, so as to improve the distribution density of the light emitting units 31 in the bending display area AA2. Alternatively, one opening 9 is arranged every one, two, three or more light emitting units 31.

[0159] In some embodiments, the plurality of openings 9 includes a plurality of first openings 91 and a plurality of second openings 92, the first openings 91 extend along the first direction X, the second openings 92 extend along the 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, and the first direction X and the second direction Y can be the extension direction 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 bending display area AA2 is bent.

[0160] The first openings 91 and the second openings 92 distributed on the substrate 11 can be long strips, the first openings 91 are long strips with the length direction along the first direction X, and the second openings 92 are long strips with the length direction along the second direction Y. Alternatively, the first direction X and the second direction Y are perpendicular.

[0161] The first openings 91 and the second openings 92 extending along different directions are arranged in the display panel 100, so that the stress generated by the bending of the bending display area AA2 along different directions can be released by the openings 9 extending along different directions. Alternatively, the plurality of openings 9 further includes third openings, fourth openings, fifth openings, etc., and the extension directions of the openings 9 are different.

[0162] For example, the bending display area AA2 is annular, and opposite ends of the bending display area AA2 arranged along the first direction X are bent along the bending axes extending along the second direction Y. The stress generated by the bending of the area can be released through the second openings 92. Opposite ends of the bending display area AA2 arranged along the second direction Y are bent along the bending axes extending along the first direction X. The stress generated by the bending of the area can be released through the first openings 91.

[0163] In some embodiments, the first openings 91 arranged at intervals along the first direction X form a first opening group, and the first opening groups are arranged along the second direction Y in sequence. The second openings 92 arranged at intervals along the second direction Y form a second opening group, and the second opening groups are arranged along the first direction X in sequence.

[0164] The first opening groups are arranged along the second direction Y in sequence, and the second opening groups are arranged along the first direction X in sequence, so that the first openings 91 and the second openings 92 are uniformly distributed in the bending display area AA2.

[0165] In some embodiments, the first openings 91 are arranged between the second openings 92 arranged adjacent along the second direction Y, and the second openings 92 are arranged between the first openings 91 arranged adjacent along the first direction X. Thus, the stress generated by bending the bending display area AA2 along different bending axes can be effectively released by the first openings 91 and the second openings 92.

[0166] In some embodiments, the light emitting units 31 form a light emitting unit group 30, and the light emitting unit groups 30 are arranged in an array. The openings 9 are arranged at intervals around the light emitting unit groups 30.

[0167] The light emitting unit group 30 can include light emitting units 31 for emitting different colors of light. Alternatively, the light emitting unit group 30 includes light emitting units 31 for emitting red light, light emitting units 31 for emitting green light, and light emitting units 31 for emitting blue light. The light emitting unit group 30 can also include multiple light emitting units 31 for emitting the same color of light. Alternatively, the light emitting unit group 30 includes one light emitting unit 31 for emitting red light, two light emitting units 31 for emitting green light, and one light emitting unit 31 for emitting blue light.

[0168] The openings 9 are arranged at intervals around the light emitting unit groups 30, so that the corresponding second electrodes 5 in adjacent light emitting unit groups 30 can be electrically connected through the isolation structures 2. The arrangement can also reduce the interval distance between the light emitting units 31 in a light emitting unit group 30, and concentrate the light emitting units 31 in a light emitting unit group 30, thereby further ensuring the display effect.

[0169] Please refer to Figure 8In some embodiments, the bending display area AA2 is arranged around at least part of the non-bending display area AA1, so that the edge of the display panel 100 can be bent relative to the non-bending display area AA1 to achieve a stereoscopic display effect.

[0170] The display panel 100 further includes a non-display area NA, and the wires 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 the external circuit through the non-display area NA. The display panel 100 further includes a binding area BA, which is all or part of the non-display area NA, and the binding area BA is used for electrical connection with the external circuit.

[0171] In some embodiments, the binding area BA is connected with the bending display area AA2.

[0172] Referring to Figure 9 In some embodiments, the display panel 100 has a first notch 101, and the first notch 101 is arranged around at least part of the non-bending display area AA1; part of the binding area BA is located in the first notch 101 and connected with the non-bending display area AA1.

[0173] The first notch 101 can extend from the edge of the bending display area AA2 away from the non-bending display area AA1 to the non-bending display area AA1. The first notch 101 is arranged to facilitate the bending of the annular non-bending display area AA1.

[0174] The binding area BA can be directly connected with the bending display area AA2, or can be connected with the non-bending display area AA1 through the first notch 101.

[0175] Referring to Figure 10 In some embodiments, the number of non-bending display areas AA1 is multiple, and the multiple non-bending 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, and the non-bending 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.

[0176] In the preparation of the display panel 100, the first display area AA11, the bending display area AA2 corresponding area and the second display area AA12 can be prepared coaxially, the bending display area AA2 corresponding area is bent to form the bending display area AA2. The bending display area AA2 can be bent relative to the non-bending display area AA1 to achieve a stereoscopic display effect.

[0177] 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 bending display area AA2.

[0178] The second notch 102 can be formed from the edge of the second display area AA12 away from the non-first display area AA11 to the first display area AA11. The second notch 102 is arranged to facilitate the cooperation of the annular second display area AA12 with the bending mode of the non-bending display area AA1.

[0179] In some embodiments, the display panel 100 further comprises a binding area BA connected with the second display area AA12.

[0180] Referring to Figure 11 In some other embodiments, part of the binding area BA is located in the second notch 102 and connected with the bending display area AA2.

[0181] The binding area BA can be directly connected with the second display area AA12 or connected with the bending display area AA2 through the second notch 102.

[0182] Referring to Figures 1 to 11 In a second aspect, the embodiments of the present application further provide a display panel 100 preparation method, comprising the following steps:

[0183] S100, providing a substrate having a first area and a second area connected with each other;

[0184] S200, forming an isolation structure 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 opening penetrates at least part of the substrate and at least part of the isolation structure, and the defined opening is arranged apart from the opening;

[0185] S300, forming a light-emitting functional layer on one side of the substrate, the light-emitting functional layer comprises a plurality of light-emitting units, at least part of the light-emitting units are arranged in the defined opening, and the orthographic projection of the light-emitting unit on the substrate does not overlap with the orthographic projection of the opening on the substrate;

[0186] S400, bending at least part of the second area, the second area forms a bending display area, and the first area forms a non-bending display area.

[0187] Before S200, the substrate 11 and the driving circuit layer 12 located on one side of the substrate 11 can be formed by coating, curing, film forming and the like. The substrate 11 can be polyimide, polystyrene, polyethylene terephthalate, poly-p-xylylene, polyether sulfone or polyethylene naphthalate.

[0188] In S300, the film layers such as the electron injection layer, the electron transport layer, the hole blocking layer, the light-emitting material layer, the electron blocking layer, the hole transport layer and the hole injection layer in the light-emitting unit 31 can be formed by an evaporation process.

[0189] In some embodiments, the second region has a plurality of first openings; S200 comprises:

[0190] S210, sequentially forming a first isolation material layer and a second isolation material layer on one side of the substrate, the first isolation material layer having a second opening in communication with a corresponding first opening, and the second isolation material layer having a third opening in communication with a corresponding second opening;

[0191] S220, performing a patterning process on the second isolation material layer and the first isolation material layer to obtain a plurality of defined openings, the first isolation material layer forming a first isolation layer, and the second isolation material layer forming a second isolation layer;

[0192] The opening includes the first opening, the second opening, and the third opening in communication.

[0193] In this embodiment, the substrate provided by S100 has a first opening disposed in the second region.

[0194] 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. Since each material layer disposed 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 communication opening 9.

[0195] In S200, the second isolation material layer is etched to form the second isolation layer 22, and the first isolation material layer is etched to form the first isolation layer 21. Specifically, at least one of dry etching or wet etching can be used to etch and remove the first isolation material layer and the second isolation material layer. The present application uses a corresponding etching solvent to etch according to the specific materials of the first isolation material layer and the second isolation material layer, and the etching solvent is not particularly limited.

[0196] S300 comprises:

[0197] S310, sequentially disposing a first light-emitting material layer, a first conductive material layer, and a first encapsulation material layer on one side of the substrate, at least part of the first light-emitting material layer, the first conductive material layer, and the first encapsulation material layer being located in the defined opening;

[0198] S320, removing the first encapsulation material layer, the first light-emitting material layer, and the first conductive material layer in part of the defined opening, the first light-emitting material layer located in the remaining defined opening forming a light-emitting unit, the first conductive material layer located on the side of the light-emitting unit away from the substrate forming a first electrode, and the first encapsulation material layer located on the side of the light-emitting unit away from the substrate forming a first encapsulation portion.

[0199] S310 and S320 are performed to prepare a plurality of light emitting units 31 for emitting light of any color, and corresponding first electrodes 4 and first encapsulation portions 71, S210 and S220 are performed again to prepare a plurality of light emitting units 31 for emitting light of another color, and corresponding first electrodes 4 and first encapsulation portions 71, S210 and S220 are performed multiple times until all the light emitting units 31 of all the required colors, and corresponding first electrodes 4 and first encapsulation portions 71 are prepared. The plurality of first encapsulation portions 71 encapsulate the respective light emitting units 31.

[0200] In some other embodiments, the second region has a plurality of first openings; S200 includes:

[0201] S230, sequentially forming a first isolation material layer and a second isolation material layer on one side of the substrate;

[0202] S240, patterning the second isolation material layer and the first isolation material layer to obtain the plurality of defined openings, the defined openings penetrating through 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 in communication with a corresponding first opening, and forming the second isolation material layer into a second isolation layer having a third opening in communication with a corresponding second opening, wherein the aperture includes the first opening, the second opening and the third opening in communication.

[0203] The first isolation material layer and the second isolation material layer are etched to remove to obtain the plurality of defined openings, and the second opening and the third opening in communication with the corresponding first opening.

[0204] The openings on the plurality of material layers are communicated to form the aperture by opening processing on the corresponding material layers.

[0205] In the preparation of the display panel, the opening on a previously prepared film layer structure can be used to directly form an opening having a communication with the opening on the previously prepared layer structure at the opening of the material layer prepared later, and the plurality of openings are communicated to form the aperture. The opening having a communication with the opening on the previously prepared layer structure can also be obtained by opening processing on one or more material layers.

[0206] Since the display panel 100 prepared by the second aspect embodiment of the present application includes the display panel 100 of any embodiment of the first aspect described above, the display panel 100 prepared by the second aspect embodiment of the present application has the beneficial effects of the display panel 100 of the first aspect described above, which will not be repeated here.

[0207] In a third aspect, the embodiments of the present application also provide a display device, which has the display panel 100 of the first aspect described above, or the display panel 100 prepared by the second aspect embodiment.

[0208] The display device provided by the embodiments of the present application can be applied to a mobile phone, and can also be any electronic product with a display function, including but not limited to the following categories: a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a smart bracelet, smart glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal, and the like, and the embodiments of the present application do not make special limitations on this.

[0209] The above is merely a specific implementation of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the system, modules and units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be described herein again. It should be understood that the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

[0210] 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, or can be different from the order in the embodiments, or several steps can be executed simultaneously.

Claims

1. A display panel, characterized by, The display panel comprises a bending display area and a non-bending display area connected with each other, and the display panel comprises: a substrate; an isolation structure arranged on one side of the substrate, the isolation structure surrounds a plurality of defined openings; a light-emitting functional layer comprising a plurality of light-emitting units, at least part of the light-emitting units are arranged in the corresponding defined openings; the display panel further comprises a plurality of openings arranged in the bending display area, the openings penetrate at least part of the substrate and at least part of the isolation structure, the orthographic projection of the light-emitting units on the substrate is not overlapped with the orthographic projection of the openings on the substrate; the plurality of openings comprises 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.

2. The display panel of claim 1, wherein, the substrate comprises a substrate and a driving circuit layer arranged on one side of the substrate; the driving circuit layer comprises a plurality of conductive layers and an insulating layer between adjacent conductive layers, the openings penetrate a plurality of insulating layers, and the orthographic projection of any conductive layer on the substrate is not overlapped with the orthographic projection of the openings on the substrate.

3. The display panel of claim 1, wherein, the openings distributed on the isolation structure are arranged at intervals with the defined openings; the isolation structure comprises a first isolation layer and a second isolation layer arranged in layers, the first isolation layer is arranged 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; the openings penetrate the first isolation layer and the second isolation layer.

4. The display panel of claim 3, wherein, the second isolation layer is protruded towards the center of the opening relative to the first isolation layer.

5. The display panel of claim 1, wherein, the display panel further comprises a first electrode layer, the first electrode layer comprises a plurality of spaced first electrodes, the first electrodes are located on the side of the corresponding light-emitting units close to the substrate, and the orthographic projection of the first electrodes on the substrate is arranged at intervals with the orthographic projection of the openings on the substrate.

6. The display panel of claim 1, wherein, the display panel further comprises a second electrode layer, the second electrode layer comprises a plurality of spaced second electrodes, at least part of the second electrodes are arranged in the corresponding defined openings, the second electrodes are located on the side of the corresponding light-emitting units away from the substrate, and the orthographic projection of the second electrodes on the substrate is arranged at intervals with the orthographic projection of the openings on the substrate; the second electrode is electrically connected with the isolation structure.

7. The display panel of claim 1, wherein, the display panel further comprises a first encapsulation layer, the first encapsulation layer comprises a plurality of first encapsulation parts, at least part of the first encapsulation parts are located in the corresponding defined openings, the first encapsulation parts are arranged on the side of the corresponding light-emitting units 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 units on the substrate; the orthographic projection of the first encapsulation parts on the substrate is not overlapped with the orthographic projection of the openings on the substrate.

8. The display panel of claim 7, wherein, The display panel further comprises a second encapsulation layer located on a side of the first encapsulation layer away from the substrate, and the opening penetrates through the second encapsulation layer. The second encapsulation layer comprises a second encapsulation portion and a third encapsulation portion connected to each other, the second encapsulation portion is located on a side of the first encapsulation portion away from the substrate, the third encapsulation portion is located in the gap and contacts a surface of the isolation structure away from the substrate, and the opening penetrates through the third encapsulation portion. The display panel further comprises a third encapsulation layer located on a side of the second encapsulation layer away from the substrate, and the opening penetrates through the third encapsulation layer.

9. The display panel of claim 1, wherein, The display panel further comprises: A pixel definition layer located on a side of the isolation structure close to the substrate, the pixel definition layer comprises a plurality of pixel openings, the pixel openings are in communication with the corresponding defined openings, at least part of the light emitting units are arranged in the pixel openings, and the opening penetrates through the pixel definition layer; the opening in the pixel definition layer is arranged in the pixel opening in a spaced manner; A normal projection of the pixel opening on the substrate is located in a range of the normal projection of the defined opening on the substrate.

10. The display panel of claim 1, wherein, The display panel further comprises a touch layer located on a side of the light emitting functional layer away from the substrate, and the opening penetrates through the touch layer; The touch layer comprises a plurality of touch electrodes, and a normal projection of the touch electrodes on the substrate is not overlapped with a normal projection of the opening on the substrate.

11. The display panel of claim 1, wherein, 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.

12. The display panel of claim 11, wherein, A plurality of the first openings arranged in a spaced manner along the first direction form a first opening group, a plurality of the first opening groups are arranged in sequence along the second direction, a plurality of the second openings arranged in a spaced manner along the second direction form a second opening group, and a plurality of the second opening groups are arranged in sequence along the first direction; The first opening is arranged between the second openings arranged in a spaced manner along the second direction, and the second opening is arranged between the first openings arranged in a spaced manner along the first direction.

13. The display panel of claim 11, wherein, A plurality of the light emitting unit groups are arranged in an array. A plurality of the openings are arranged in a spaced manner around the light emitting unit group.

14. The display panel of claim 1, wherein, The bending display area is arranged around at least part of the non-bending display area, and the display panel further comprises a binding area connected to the bending display area.

15. The display panel of claim 1, wherein, The bending display area is arranged around at least part of the non-bending display area, the display panel further comprises a binding area, and the display panel has a first notch arranged around at least part of the non-bending display area; part of the binding area is located in the first notch and connected to the non-bending display area.

16. The display panel of claim 1, wherein, The number of the 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, and the 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.

17. The display panel of claim 16, wherein, The first display area has a circular or elliptical shape in the orthographic projection on the plane where the substrate is located; and the display panel further includes a binding area connected with the second display area.

18. The display panel of claim 16, wherein, The display panel further includes a binding area, the display panel has a second notch arranged around at least part of the bent display area, and part of the binding area is located in the second notch and connected with the bent display area.

19. A method for manufacturing a display panel, characterized by, Comprise: A substrate is provided, the substrate has a first region and a second region connected with 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 region, the openings penetrate at least part of the substrate and at least part of the isolation structure, the defined openings are arranged apart from the openings, 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 apart from each other, and the first direction and the second direction intersect each other; A light-emitting functional layer is formed 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 are arranged in the corresponding 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; At least part of the second region is bent, the second region forms a bent display area, and the first region forms a non-bent display area.

20. The method of claim 19, wherein, The second region has a plurality of first openings; and the forming of the isolation structure on one side of the substrate comprises: A first isolation material layer and a second isolation material layer are sequentially formed on one side of the substrate, the first isolation material layer has a second opening in communication with a corresponding first opening, and the second isolation material layer has a third opening in communication with a corresponding second opening; The second isolation material layer and the first isolation material layer are subjected to a patterning process to obtain the 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; The opening includes the first opening, the second opening and the third opening in communication with each other.

21. The method of claim 19, wherein, The second region has a plurality of first openings; and the forming of the isolation structure on one side of the substrate comprises: A first isolation material layer and a second isolation material layer are sequentially formed on one side of the substrate; The second isolation material layer and the first isolation material layer are subjected to a patterning process to obtain the plurality of defined openings, and a second opening and a third opening in communication with the corresponding first opening, the first isolation material layer forming a first isolation layer having the second opening, and the second isolation material layer forming a second isolation layer having the third opening, wherein the aperture includes the first opening, the second opening, and the third opening in communication.

22. A display device comprising: A display panel comprising the display panel of any one of claims 1 to 18, or a display panel prepared by the method of any one of claims 19 to 21.

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