Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel and a preparation method thereof and a display device, and relates to the technical field of display, the display panel is provided with a first area and a second area at least partially surrounding the first area, and the display panel comprises a substrate, an isolation structure, a plurality of light-emitting units and a plurality of dummy light-emitting units. The isolation structure is located on one side of the substrate, the isolation structure comprises a first isolation structure and a second isolation structure, the first isolation structure is located in the first area, the first isolation structure encloses to form a plurality of first isolation openings, the second isolation structure is located in the second area, and the second isolation structure encloses to form a plurality of second isolation openings; the light-emitting unit is located on one side of the substrate and located in the first area, and the orthographic projection of the light-emitting unit on the substrate is overlapped with the orthographic projection of the first isolation opening on the substrate; the dummy light-emitting unit is located on one side of the substrate and located in the second area, and the orthographic projection of the dummy light-emitting unit on the substrate is overlapped with the orthographic projection of the second isolation opening on the substrate. The display panel can improve the use performance of the display device.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and more specifically, relates to a display panel and a preparation method thereof, and a display device. Background Art

[0002] At present, flat panel display devices have the advantages of high image quality, power saving, small thickness and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. In the preparation process of traditional display panels, the graphicization of luminous pixels is usually achieved through a fine metal mask (FMM). FMM technology is mature and has rich experience in mass production. However, FMM technology also has problems such as limited accuracy, high development cost and long development cycle. The non-fine metal mask technology eliminates the limitations of traditional OLED processes on display size, resolution and other screen performance, and has the advantages of high performance, full-domain size and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A, and CN118660589A record relevant contents of the non-fine metal mask technology for reference.

[0003] However, the performance and process performance of current display devices need to be improved. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a display panel and a method for manufacturing the same, and a display device, so as to improve the performance of the display device.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, a display panel is provided, the display panel having a first area and a second area at least partially surrounding the first area, the display panel comprising: a substrate, an isolation structure, a plurality of light-emitting units and a plurality of dummy light-emitting units. The isolation structure is located on one side of the substrate, the isolation structure comprises a first isolation structure and a second isolation structure, the first isolation structure is located in the first area, the first isolation structure encloses a plurality of first isolation openings, the second isolation structure is located in the second area, the second isolation structure encloses a plurality of second isolation openings; the light-emitting unit is located on one side of the substrate and in the first area, the orthographic projection of the light-emitting unit on the substrate overlaps with the orthographic projection of the first isolation opening on the substrate; the dummy light-emitting unit is located on one side of the substrate and in the second area, the orthographic projection of the dummy light-emitting unit on the substrate overlaps with the orthographic projection of the second isolation opening on the substrate.

[0007] Through the above technical solution, a dummy light-emitting unit is arranged in the second area, and at least part of the second area surrounds the first area, wherein the dummy light-emitting unit is not connected to the light-emitting unit and cannot emit light, and the electrostatic discharge (ESD) test preferentially affects the dummy light-emitting unit. Since the dummy light-emitting unit is not connected to the light-emitting unit, even if the electrostatic discharge (ESD) test affects the dummy light-emitting unit, it will not affect the light-emitting effect of the display panel, so the performance can be improved.

[0008] Therefore, the display panel provided by the present application can improve the performance of the display device.

[0009] In some embodiments, the display panel provided in the present application also includes a first encapsulation layer and a protective layer, the first encapsulation layer is located on the side of the light-emitting unit and the dummy light-emitting unit away from the substrate, the first encapsulation layer includes a plurality of encapsulation parts, and the plurality of encapsulation parts respectively cover the light-emitting unit and the dummy light-emitting unit; the protective layer includes an insulating material, the protective layer is located on the side of the isolation structure away from the substrate, and the protective layer covers at least a portion of the surface of the isolation structure away from the substrate.

[0010] In this way, the display panel provided in the present application sets a protective layer on the side of the isolation structure away from the substrate, and uses the protective layer to cover at least part of the surface of the isolation structure away from the substrate, which can improve the impact on the light-emitting unit during electrostatic testing and is beneficial to improving performance.

[0011] Optionally, the protection layer covers at least a portion of a surface of the first isolation structure facing away from the substrate.

[0012] Optionally, an orthographic projection of a surface of the first isolation structure facing away from the substrate on the substrate is located within an orthographic projection of the protection layer and the packaging portion on the substrate.

[0013] Optionally, the orthographic projections of the surfaces of the first isolation structure and the second isolation structure facing away from the substrate on the substrate are located within the orthographic projections of the protection layer and the packaging portion on the substrate.

[0014] In some embodiments, there is a gap between two adjacent packaging parts, the gap exposes at least a portion of the surface of the first isolation structure facing away from the substrate, and at least a portion of the protection layer is filled in the gap.

[0015] Optionally, the orthographic projection of the gap on the substrate is located within the orthographic projection of the protective layer on the substrate.

[0016] In some embodiments, the orthographic projection of the encapsulation portion on the substrate overlaps with the orthographic projection of the protection layer on the substrate, and the orthographic projection of the protection layer on the substrate is located within the orthographic projection of the surface of the first isolation structure facing away from the substrate on the substrate.

[0017] In some embodiments, an orthographic projection of the protective layer on the substrate surrounds at least a portion of an orthographic projection of the light emitting unit on the substrate.

[0018] Optionally, the light-emitting unit includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the first encapsulation layer includes a plurality of encapsulation parts, the plurality of encapsulation parts include a first encapsulation part, a second encapsulation part and a third encapsulation part, the protective layer includes a plurality of protection parts, the plurality of protection parts include a first protection part, a second protection part and a third protection part, the first encapsulation part covers the first light-emitting unit, the second encapsulation part covers the second light-emitting unit, the third protection part covers the third light-emitting unit, the orthographic projection of the first protection part on the substrate at least partially surrounds the orthographic projection of the first light-emitting unit on the substrate, the orthographic projection of the second protection part on the substrate at least partially surrounds the orthographic projection of the second light-emitting unit on the substrate, and the orthographic projection of the third protection part on the substrate at least partially surrounds the orthographic projection of the third light-emitting unit on the substrate.

[0019] Optionally, an orthographic projection of the first protection portion on the substrate overlaps with an orthographic projection of the second protection portion on the substrate.

[0020] Optionally, an orthographic projection of the first protecting portion on the substrate overlaps with an orthographic projection of the third protecting portion on the substrate.

[0021] Optionally, an orthographic projection of the second protection portion on the substrate overlaps with an orthographic projection of the third protection portion on the substrate.

[0022] In some embodiments, the material of the protection layer includes an organic material.

[0023] Optionally, the material of the protective layer includes organic glue.

[0024] Optionally, the material of the protection layer includes polyimide.

[0025] Optionally, the substrate includes a planar layer, and a material of the protective layer is consistent with a material of the planar layer.

[0026] In some embodiments, the display panel further includes a second encapsulation layer, which is located on a side of the first encapsulation layer and the protective layer away from the substrate; a surface of a second isolation structure on a side of the dummy light-emitting unit away from the light-emitting unit is away from the substrate and is adjacent to the second encapsulation layer.

[0027] Optionally, the display panel further includes a third encapsulation layer, and the third encapsulation layer is located on a side of the second encapsulation layer away from the substrate.

[0028] In some embodiments, the first isolation structure and the second isolation structure are provided in the same layer and with the same material.

[0029] Optionally, the first isolation structure and the second isolation structure are connected as one body or are insulated from each other.

[0030] Optionally, the first area is a display area, and the second area is a non-display area.

[0031] In some embodiments, the substrate includes a transistor, the light emitting unit is electrically connected to the transistor, and the dummy light emitting unit is not connected to the transistor.

[0032] Optionally, the substrate includes an insulating layer covering the transistor, the insulating layer includes a via hole, and the light-emitting unit is electrically connected to the transistor through a line passing through the via hole.

[0033] In some embodiments, at least part of the light emitting units and at least part of the dummy light emitting units are arranged in the same layer and with the same material.

[0034] In some embodiments, the display panel provided in the present application further includes a first electrode layer, the first electrode layer includes a plurality of first electrodes, and the first electrodes are located on a side of the light-emitting unit and the dummy light-emitting unit facing the substrate;

[0035] The first electrode corresponding to the light-emitting unit is electrically connected to the transistor, and the first electrode corresponding to the dummy light-emitting unit is not connected to the transistor.

[0036] In some embodiments, the display panel provided in the present application also includes a pixel definition layer, the pixel definition layer is located on the side of the first electrode layer away from the substrate, the isolation structure is located on the side of the pixel definition layer away from the substrate, the pixel definition layer includes a pixel opening, the pixel opening exposes a portion of the first electrode, the pixel opening is interconnected with the first isolation opening, and the pixel opening is not connected with the second isolation opening.

[0037] In some embodiments, in the first direction, an edge of a side of the orthographic projection of the dummy light-emitting unit on the substrate away from an adjacent light-emitting unit is a first edge, an edge of a side of the orthographic projection of a light-emitting unit adjacent to the dummy light-emitting unit on the substrate close to the dummy light-emitting unit is a second edge, a distance between the first edge and the second edge is d, an edge of a side of the orthographic projection of one of two adjacent light-emitting units on the substrate away from the other is a third edge, an edge of a side of the orthographic projection of the other of the two adjacent light-emitting units on the substrate close to one of the two adjacent light-emitting units is a fourth edge, a distance between the third edge and the fourth edge is e, 0.5e≤d≤2e.

[0038] In some embodiments, the display panel further includes a pixel definition layer and a first electrode layer, the first electrode layer includes a plurality of first electrodes, the first electrodes are located on a side of the light-emitting unit facing the substrate, the pixel definition layer is located on a side of the first electrode layer away from the substrate, the isolation structure is located on a side of the pixel definition layer away from the substrate, the pixel definition layer includes a first pixel opening and a second pixel opening, the first pixel opening is connected to the first isolation opening, and the second pixel opening is connected to the second isolation opening, in a first direction, an edge of an orthogonal projection of the second pixel opening on the substrate away from an adjacent first pixel opening is a first edge, an edge of an orthogonal projection of the first pixel opening adjacent to the second pixel opening on the substrate close to the second pixel opening is a second edge, an edge of a side of an orthogonal projection of one of the two adjacent first pixel openings on the substrate away from the other is a third edge, an edge of a side of an orthogonal projection of the other of the two adjacent first pixel openings on the substrate close to one of the two adjacent first pixel openings is a fourth edge, the distance between the first edge and the second edge is d, the distance between the third edge and the fourth edge is e, and 0.5e≤d≤2e.

[0039] In some embodiments, in the first direction, the distance between the center of the orthographic projection of the dummy light emitting unit on the substrate and the center of the orthographic projection of the adjacent light emitting unit on the substrate is d, the distance between the centers of the orthographic projections of two adjacent light emitting units on the substrate is e, and 0.5e≤d≤2e.

[0040] Optionally, the first direction is parallel to the surface where the substrate is located.

[0041] Optionally, the plurality of light emitting units include a plurality of rows and a plurality of columns, and the plurality of rows of light emitting units are arranged along the first direction, or the plurality of columns of light emitting units are arranged along the first direction.

[0042] In some embodiments, the display panel provided in the present application further includes a second electrode, the second electrode is located on a side of the light-emitting unit facing away from the substrate, and the second electrode is electrically connected to the isolation structure.

[0043] Optionally, the isolation structure includes a first layer and a second layer stacked in a direction away from the substrate, an orthographic projection of the first layer on the substrate is located within an orthographic projection of the second layer on the substrate, and the second electrode is electrically connected to the first layer.

[0044] Optionally, the first layer includes a first sublayer and a second sublayer stacked in a direction away from the substrate.

[0045] Optionally, an orthographic projection of the second sub-layer on the substrate is located within an orthographic projection of the first sub-layer on the substrate.

[0046] In a second aspect, the present application provides another display panel, which includes: a substrate, an isolation structure, a plurality of light-emitting units, a first encapsulation layer, and a protective layer. The isolation structure is located on one side of the substrate and encloses a plurality of isolation openings; the light-emitting unit is located on one side of the substrate, and the light-emitting unit is located on the side where the isolation structure is located, and the orthographic projection of the light-emitting unit on the substrate overlaps with the orthographic projection of the isolation opening on the substrate; the first encapsulation layer is located on the side of the light-emitting unit away from the substrate, and the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the first encapsulation layer on the substrate; the protective layer includes an insulating material, and the protective layer is located on the side of the isolation structure away from the substrate, and covers at least part of the surface of the isolation structure away from the substrate.

[0047] Through the above technical solution, the display panel provided in the present application uses a protective layer to cover at least part of the surface of the isolation structure away from the substrate, which can improve the impact of electrostatic discharge (ESD) testing on the light-emitting unit and is beneficial to improving performance.

[0048] Therefore, the display panel provided by the present application can improve the performance of the display device.

[0049] In a third aspect, the present application provides a method for preparing a display panel, the method comprising:

[0050] providing a substrate;

[0051] preparing an isolation structure on one side of the substrate;

[0052] A light-emitting unit, a first packaging layer and a protective layer are prepared, wherein the orthographic projection of the light-emitting unit on the substrate overlaps with the orthographic projection of the isolation opening on the substrate, the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the first packaging layer on the substrate, and the protective layer is located on the side of the isolation structure facing away from the substrate, and covers at least a portion of the surface of the isolation structure facing away from the substrate.

[0053] In some embodiments, preparing the light-emitting unit, the first encapsulation layer, and the protective layer includes:

[0054] preparing a light-emitting unit and a first encapsulation layer;

[0055] Prepare a protective layer.

[0056] In some embodiments, the light-emitting unit includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit, the first encapsulation layer includes a plurality of encapsulation parts, the plurality of encapsulation parts include a first encapsulation part, a second encapsulation part, and a third encapsulation part; before preparing the isolation structure on one side of the substrate, the preparation method of the present application further includes: preparing a pixel definition layer on one side of the substrate.

[0057] Optionally, the preparing the light-emitting unit and the first encapsulation layer includes:

[0058] The patterned isolation structure forms an isolation opening;

[0059] The patterned pixel definition layer forms a pixel opening, wherein an orthographic projection of the pixel opening on the substrate is located within an orthographic projection of the isolation opening on the substrate;

[0060] Prepare a first light-emitting unit and a first packaging part;

[0061] preparing a second light emitting unit and a second packaging part;

[0062] A third light emitting unit and a third encapsulation portion are prepared.

[0063] Optionally, the preparing the light-emitting unit and the first encapsulation layer includes:

[0064] The patterned isolation structure forms a first isolation opening;

[0065] The patterned pixel definition layer forms a first pixel opening;

[0066] Prepare a first light-emitting unit and a first packaging part;

[0067] The patterned isolation structure forms a second isolation opening;

[0068] The patterned pixel definition layer forms a second pixel opening;

[0069] preparing a second light emitting unit and a second packaging part;

[0070] The patterned isolation structure forms a third isolation opening;

[0071] The patterned pixel definition layer forms a third pixel opening;

[0072] preparing a third light emitting unit and a third packaging part;

[0073] Optionally, the preparing the light-emitting unit and the first encapsulation layer includes:

[0074] The patterned isolation structure forms a first isolation opening and a second isolation opening;

[0075] The patterned pixel definition layer forms a first pixel opening and a second pixel opening;

[0076] Prepare a first light-emitting unit and a first packaging part;

[0077] preparing a second light emitting unit and a second packaging part;

[0078] The patterned isolation structure forms a third isolation opening;

[0079] The patterned pixel definition layer forms a third pixel opening;

[0080] A third light emitting unit and a third encapsulation portion are prepared.

[0081] In some embodiments, the light-emitting unit includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit, the first encapsulation layer includes a plurality of encapsulation parts, the encapsulation parts include a first encapsulation part, a second encapsulation part, and a third encapsulation part, the protective layer includes a plurality of protection parts, the plurality of protection parts include a first protection part, a second protection part, and a third protection part;

[0082] The preparation of the light-emitting unit, the first encapsulation layer and the protective layer comprises:

[0083] Prepare a first light-emitting unit and a first packaging part;

[0084] preparing a first protective portion;

[0085] preparing a second light emitting unit and a second packaging part;

[0086] preparing a second protective portion;

[0087] preparing a third light emitting unit and a third packaging part;

[0088] A third protecting portion is prepared.

[0089] In a fourth aspect, the present application provides a display device, which includes a display panel of any of the above embodiments and / or a display panel prepared by a preparation method of any of the above embodiments. The display device provided by the present application has the same or similar technical effects as the above display panel, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0091] Figure 1 A schematic diagram of the planar structure of a display panel provided in an embodiment of the present application;

[0092] Figure 2 For along Figure 1 One of the cross-sectional structural diagrams along the AA line;

[0093] Figure 3 For along Figure 1 The second cross-sectional structure diagram of the AA line;

[0094] Figure 4 For along Figure 1 The third cross-sectional structure diagram of the AA line;

[0095] Figure 5 For along Figure 1 The fourth cross-sectional structure diagram of the AA line;

[0096] Figure 6 For along Figure 1 The fifth cross-sectional structure diagram of the AA line;

[0097] Figure 7 is a schematic diagram of an orthographic projection of a light emitting unit and a dummy light emitting unit on a substrate;

[0098] Figure 8 is a schematic diagram of the orthographic projection of the first pixel opening and the second pixel opening on the substrate;

[0099] Fig. 9 The second schematic diagram is an orthographic projection diagram of a light emitting unit and a dummy light emitting unit on a substrate;

[0100] Fig.10 for Figure 1 A partial enlarged view of point B in the middle;

[0101] Fig.11 For along Fig.10 Cross-sectional structural diagram of the center CC line;

[0102] Fig.12 For along Figure 1 The sixth cross-sectional structure diagram of the AA line;

[0103] Fig.13 One of the flow diagrams of the preparation method provided in the embodiment of the present application;

[0104] Fig.14 The second schematic diagram of the preparation method provided in the embodiment of the present application;

[0105] Fig.15 The third schematic diagram of the preparation method provided in the embodiment of the present application;

[0106] Fig.16 The fourth flow chart of the preparation method provided in the embodiment of the present application;

[0107] Fig.17 The fifth flow chart of the preparation method provided in the embodiment of the present application;

[0108] Fig.18 This is the sixth flow chart of the preparation method provided in the embodiment of the present application.

[0109] Among them, the reference numerals in the figure are:

[0110] 100-display panel; 101-first area; 102-second area; 10-substrate; 11-flat layer; 12-conductive layer; 20-pixel definition layer; 21-first pixel opening; 22-second pixel opening; 30-isolation structure; 301-first isolation structure; 3011-first isolation opening; 302-second isolation structure; 3021-second isolation opening; 31-first layer; 311-first sublayer; 312-second sublayer; 32-second layer; 40 1-first edge; 402-second edge; 403-third edge; 404-fourth edge; 41-light-emitting unit; 43-first electrode; 44-second electrode; 42-dummy light-emitting unit; 50-first encapsulation layer; 501-gap; 51-first encapsulation part; 52-second encapsulation part; 53-third encapsulation part; 60-second encapsulation layer; 70-third encapsulation layer; 80-protective layer; 81-first protection part; 82-second protection part; 83-third protection part. DETAILED DESCRIPTION

[0111] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0112] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0113] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0114] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0115] Please also read Figure 1 and Figure 2An embodiment of the present application provides a display panel 100 , which may be an organic light-emitting diode (OLED) display panel 100 or a micro light-emitting diode (Micro Light Emitting Diode, Micro LED / μLED) display panel 100 .

[0116] The display panel 100 includes a display area AA and a non-display area NA, and at least a portion of the non-display area NA surrounds the display area AA.

[0117] The display panel 100 includes a substrate 10 and a plurality of light-emitting units 41, the light-emitting units 41 are located on one side of the substrate 10 along the thickness direction, and the plurality of light-emitting units 41 can be prepared in batches according to the process flow. For example, the plurality of light-emitting units 41 can include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit, and the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit can emit light of different colors. For example, the first light-emitting unit can emit red light, the second light-emitting unit can emit green light, and the third light-emitting unit can emit blue light.

[0118] It is understandable that the first light-emitting unit, the second light-emitting unit and the third light-emitting unit are sequentially evaporated and patterned. That is, when preparing the display panel 100 provided in the embodiment of the present application, the first light-emitting unit can be firstly evaporated and patterned to form the first light-emitting unit, then evaporated and patterned to form the second light-emitting unit, and finally evaporated and patterned to form the third light-emitting unit.

[0119] In some embodiments, the first light emitting unit, the second light emitting unit, and the third light emitting unit may be patterned using a mask.

[0120] In some embodiments, the display panel 100 further includes a pixel definition layer 20 (Pixel Defined Layer, PDL) and an isolation structure 30, wherein the isolation structure 30 and the pixel definition layer 20 are disposed on the same side of the substrate 10 in the thickness direction, and the isolation structure 30 is disposed on the side of the pixel definition layer 20 away from the substrate 10, and the isolation structure 30 defines a plurality of isolation openings. Among them, the orthographic projection of the light-emitting unit 41 on the substrate 10 can be located within the orthographic projection of the corresponding isolation opening on the substrate 10. Optionally, the pixel definition layer 20 and the isolation structure 30 can be located in the display area AA. It can be understood that the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit can be patterned by the isolation structure 30 instead of the mask.

[0121] The display panel 100 also includes a first electrode layer, which is located on the side of the pixel definition layer 20 facing the substrate 10, and part of the first electrode layer is located between the pixel definition layer 20 and the substrate 10. The first electrode layer includes a plurality of first electrodes 43 spaced apart from each other, and the pixel opening is connected to the isolation opening, and the pixel opening exposes part of the first electrode 43.

[0122] It can be understood that the second electrode 44 and the first electrode 43 of the display panel 100 are located on the side of the pixel definition layer 20 facing the substrate 10 , the second electrode 44 is located in the isolation opening, and the light-emitting unit can be connected to the first electrode 43 through the pixel opening.

[0123] Optionally, the first electrode 43 may be an anode, and the second electrode 44 may be a cathode.

[0124] The display panel 100 further includes a first encapsulation layer 50, which is disposed on a side of the light emitting unit 41 away from the substrate 10, and the first encapsulation layer 50 is adjacent to the light emitting unit 41. The first encapsulation layer 50 includes a plurality of encapsulation parts, and the encapsulation parts cover the corresponding isolation openings and the light emitting unit 41. In other words, the orthographic projection of the isolation opening on the substrate 10 is located within the orthographic projection of the corresponding encapsulation part on the substrate 10, and the orthographic projection of the light emitting unit 41 on the substrate 10 is located within the orthographic projection of the corresponding encapsulation part on the substrate 10.

[0125] The plurality of encapsulation parts may include a first encapsulation part 51, a second encapsulation part 52, and a third encapsulation part 53. The first encapsulation part 51 corresponds to the first light-emitting unit, and the first encapsulation part 51 is also formed by patterning. The second encapsulation part 52 corresponds to the second light-emitting unit, and the second encapsulation part 52 is also formed by patterning. The third encapsulation part 53 corresponds to the third light-emitting unit, and the third encapsulation part 53 is also formed by patterning. In addition, the preparation order of the first encapsulation part 51, the second encapsulation part 52, and the third encapsulation part 53 is consistent with the preparation order of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit.

[0126] See also Figure 2 The inventors have found that when the display panel 100 is subjected to an electrostatic discharge (ESD) test, it is easy to apply a voltage to the isolation structure 30 , causing damage to the light-emitting unit 41 .

[0127] See also Figure 3In order to solve the above technical problems, the embodiment of the present application provides a display panel 100, which has a first area 101 and a second area 102 at least partially surrounding the first area 101. The display panel 100 also includes a substrate 10, an isolation structure 30, a plurality of light-emitting units 41 and a plurality of dummy light-emitting units 42. The isolation structure 30 is located on one side of the substrate 10. The isolation structure 30 includes a first isolation structure 301 and a second isolation structure 302. The first isolation structure 301 is located in the first area 101, and the first isolation structure 301 encloses a plurality of first isolation openings 3011. The second isolation structure 302 is located in the second area 102, and the second isolation structure 302 encloses a plurality of second isolation openings 3021. Optionally, the second isolation structure 302 surrounds the first isolation structure 301.

[0128] The light-emitting unit 41 is located on one side of the substrate 10 and in the first area 101, and the orthographic projection of the light-emitting unit 41 on the substrate 10 overlaps with the orthographic projection of the first isolation opening 3011 on the substrate 10; the dummy light-emitting unit 42 is located on one side of the substrate 10 and in the second area 102, and the orthographic projection of the dummy light-emitting unit 42 on the substrate 10 overlaps with the orthographic projection of the second isolation opening 3021 on the substrate 10.

[0129] It is understandable that the dummy light-emitting unit 42 is not connected to the light-emitting unit 41, and the dummy light-emitting unit 42 cannot emit light. In addition, the second area 102 where the dummy light-emitting unit 42 is located surrounds the first area 101 where the light-emitting unit 41 is located, and the electrostatic discharge (ESD) test preferentially affects the dummy light-emitting unit. Since the dummy light-emitting unit 42 is not connected to the light-emitting unit 41, even if the electrostatic discharge (ESD) test affects the dummy light-emitting unit 42, it will not affect the light-emitting unit 41, thereby not affecting the light-emitting effect of the display panel 100, and thus the performance of use can be improved.

[0130] Therefore, the display panel provided by the present application can improve the performance of the display device.

[0131] In some embodiments, the display panel 100 provided in the embodiments of the present application further includes a protective layer 80 , and the protective layer 80 includes an insulating material. The protective layer 80 can block current transmission.

[0132] The protective layer 80 is located on the side of the isolation structure 30 facing away from the substrate 10, and the protective layer 80 covers at least a portion of the surface of the isolation structure 30 facing away from the substrate 10. In this way, the display panel 100 provided in the embodiment of the present application can use the protective layer 80 to block current transmission, and cover at least a portion of the surface of the isolation structure 30 facing away from the substrate 10, thereby improving the impact of electrostatic discharge (ESD) testing on the light-emitting unit 41, which is beneficial to improving the performance.

[0133] Optionally, the protection layer 80 covers at least a portion of the surface of the first isolation structure 301 facing away from the substrate 10 , so that the protection layer 80 can block the current from being transmitted to the first isolation structure 301 , thereby preventing the current from being transmitted to the light-emitting unit 41 .

[0134] Optionally, the first isolation structure 301 and the second isolation structure 302 can be connected as one. This makes it convenient to prepare the isolation structure 30. It is understandable that the second isolation structure 302 is easily affected by the electrostatic test, but the dummy light-emitting unit 42 does not emit light, and the dummy light-emitting unit 42 is not connected to the light-emitting unit 41, and the second isolation structure 302 has no effect on the dummy light-emitting unit 42. Although the first isolation structure 301 is connected to the second isolation structure 302, the second isolation structure 302 surrounds the first isolation structure 301, and the current received by the second isolation structure 302 is dispersed to the multiple light-emitting units 41 in the first area 101, and it is not easy to produce current concentration, and the impact on the light-emitting unit 41 is small.

[0135] Optionally, the first isolation structure 301 and the second isolation structure 302 may be insulated from each other, so as to prevent the second isolation structure 302 from transmitting the received current to the first isolation structure 301 .

[0136] Optionally, the first isolation structure 301 and the second isolation structure 302 are in the same layer and are made of the same material, that is, the first isolation structure 301 and the second isolation structure 302 are both located on the side of the pixel definition layer 20 away from the substrate 10, and are both adjacent to the pixel definition layer 20, and the first isolation structure 301 and the second isolation structure 302 are made of the same material. This facilitates the preparation of the isolation structure.

[0137] Similarly, at least part of the light emitting units 41 and at least part of the dummy light emitting units 42 are provided in the same layer and with the same material, which facilitates the preparation of the light emitting units 41 and the dummy light emitting units 42 .

[0138] The inventors also found that due to packaging factors, the light-emitting unit 41 located at the edge of the display area AA is more susceptible to the influence of the electrostatic test.

[0139] In some embodiments, the first area 101 is the display area AA, the second area 102 is the non-display area NA, and the dummy light-emitting units 42 are located in the non-display area NA and arranged along the edge of the display area AA. In this way, the dummy light-emitting units 42 can replace the light-emitting units 41 at the edge of the display area AA to withstand the influence of the electrostatic test, thereby protecting the light-emitting units 41 at the edge of the display area AA.

[0140] In some embodiments, the substrate 10 includes a transistor (not shown), the light emitting unit 41 is electrically connected to the transistor, and the dummy light emitting unit 42 is not connected to the transistor. In this way, the light emitting unit 41 can emit light, and the dummy light emitting unit 42 does not emit light.

[0141] Optionally, the substrate includes an insulating layer covering the transistor, the insulating layer includes a via hole, and the light emitting unit 41 is electrically connected to the transistor through a line passing through the via hole.

[0142] Optionally, the substrate 10 includes a conductive layer 12, the light emitting unit 41 is electrically connected to the conductive layer 12, and the dummy light emitting unit 42 is not connected to the conductive layer 12. The conductive layer 12 may be connected to a transistor. In this way, the light emitting unit 41 may be connected to the transistor, and the dummy light emitting unit 42 may be not connected to the transistor.

[0143] See also Figure 3 Optionally, the first electrode 43 is located on the side of the light-emitting unit 41 and the dummy light-emitting unit 42 facing the substrate 10, the first electrode 43 corresponding to the light-emitting unit 41 is electrically connected to the transistor, and the first electrode 43 corresponding to the dummy light-emitting unit 42 is not connected to the transistor. In this way, the light-emitting unit 41 can be connected to the transistor, and the dummy light-emitting unit 42 can be not connected to the transistor.

[0144] Optionally, the first electrode 43 is located on the side of the light emitting unit 41 facing the substrate 10, that is, the light emitting unit 41 is electrically connected to the first electrode 43, and the first electrode 43 is electrically connected to the transistor. The orthographic projection of the dummy light emitting unit 42 on the substrate 10 does not overlap with the orthographic projection of the first electrode 43 on the substrate 10, that is, the dummy light emitting unit 42 is not connected to the first electrode 43. In this way, the light emitting unit 41 can be connected to the transistor, and the dummy light emitting unit 42 can be not connected to the transistor.

[0145] See also Figure 4 Optionally, the pixel opening exposes a portion of the first electrode 43, the pixel opening is connected to the first isolation opening 3011, and the pixel opening is not connected to the second isolation opening 3021. In this way, the light-emitting unit 41 can be electrically connected to the first electrode 43, and the dummy light-emitting unit 42 cannot be connected to the first electrode 43, so that the light-emitting unit 41 can be connected to the transistor, and the dummy light-emitting unit 42 is not connected to the transistor.

[0146] It can be understood that the light emitting unit 41 and the dummy light emitting unit 42 can be arranged in different layers.

[0147] See also Figure 5 Optionally, the pixel opening includes a first pixel opening 21 and a second pixel opening 22, the orthographic projection of the first pixel opening 21 on the substrate 10 overlaps with the orthographic projection of the light-emitting unit 41 on the substrate 10, the orthographic projection of the second pixel opening 22 on the substrate 10 overlaps with the orthographic projection of the dummy light-emitting unit on the substrate 10, the first pixel opening 21 is connected to the first isolation opening 3011, the second pixel opening 22 is connected to the second isolation opening 3021, the first pixel opening 21 exposes a portion of the first electrode 43, and the second pixel opening 22 cannot expose at least a portion of the first electrode 43, that is, the orthographic projection of the second pixel opening 22 on the substrate 10 does not overlap with the orthographic projection of the first electrode 43 on the substrate 10.

[0148] Please also read Figure 3 In some embodiments, the orthographic projection of the surface of the first isolation structure 301 facing away from the substrate 10 on the substrate 10 is located within the orthographic projection of the protective layer 80 and the packaging part on the substrate 10. In other words, the protective layer 80 and the packaging part can jointly cover the surface of the first isolation structure 301 facing away from the substrate 10 to prevent the surface of the isolation structure 30 facing away from the substrate 10 from being exposed. In this way, when the display panel 100 provided in the embodiment of the present application is subjected to an electrostatic test, it is possible to prevent the current from being introduced into the isolation structure 30 through the surface of the isolation structure 30 facing away from the substrate 10, thereby preventing the current from affecting the light-emitting unit 41.

[0149] See also Figure 6 Optionally, the orthographic projections of the surfaces of the first isolation structure 301 and the second isolation structure 302 facing away from the substrate 10 on the substrate 10 are located within the orthographic projections of the protection layer 80 and the packaging portion on the substrate 10 .

[0150] In some embodiments, a gap 501 is provided between two adjacent packaging parts, the gap 501 exposes at least a portion of the surface of the first isolation structure 301 facing away from the substrate 10 , and the gap 501 is filled with at least a portion of the protection layer 80 .

[0151] Optionally, the orthographic projection of the gap 501 on the substrate 10 is located within the orthographic projection of the protective layer 80 on the substrate 10. It is understandable that the protective layer 80 can cover the portion of the surface of the first isolation structure 301 facing away from the substrate 10 that is exposed by the gap 501. In this way, when the display panel 100 provided in the embodiment of the present application is subjected to an electrostatic test, it is possible to prevent the current from being introduced into the first isolation structure 301 through the surface of the first isolation structure 301 facing away from the substrate 10, thereby preventing the current from affecting the light-emitting unit 41.

[0152] Optionally, the encapsulation portion may cover at least a portion of a surface of the isolation structure 30 facing away from the substrate 10 .

[0153] See also Figure 3 Optionally, the encapsulation portion may cover at least a portion of the surface of the first isolation structure 301 facing away from the substrate 10 .

[0154] See also Figure 6 Optionally, the encapsulation portion may cover at least a portion of the surface of the second isolation structure 302 facing away from the substrate 10 .

[0155] Please also read Figure 3 , Figure 4 , Figure 5 and Figure 6 In some embodiments, the orthographic projection of the encapsulation part on the substrate 10 overlaps with the orthographic projection of the protective layer 80 on the substrate 10. It can be understood that the encapsulation part and the protective layer 80 jointly cover the surface of the first isolation structure 301 away from the substrate 10, and the orthographic projection of the encapsulation part on the substrate 10 overlaps with the orthographic projection of the protective layer 80 on the substrate 10. The overlapping portion of the encapsulation part and the protective layer 80 can double protect the surface of the first isolation structure 301 away from the substrate 10. In this way, the display panel 100 provided in the embodiment of the present application can avoid the exposure of the surface of the first isolation structure 301 away from the substrate 10, especially the exposure of the surface of the first isolation structure 301 away from the substrate 10 at the junction of the encapsulation part and the protective layer 80, thereby improving reliability. In addition, when the display panel 100 provided in the embodiment of the present application is subjected to electrostatic testing, it can avoid the current from being introduced into the isolation structure 30 through the surface of the first isolation structure 301 away from the substrate 10, thereby avoiding the current from affecting the light-emitting unit 41.

[0156] Optionally, the orthographic projection of the protective layer 80 on the substrate 10 is located within the orthographic projection of the surface of the first isolation structure 301 facing away from the substrate 10 on the substrate 10. It can be understood that the encapsulation portion can cover part of the surface of the first isolation structure 301 facing away from the substrate 10, and the protective layer 80 can cover the remaining part of the surface of the first isolation structure 301 facing away from the substrate 10. The display panel 100 provided in the embodiment of the present application makes the orthographic projection of the protective layer 80 on the substrate 10 located within the orthographic projection of the surface of the first isolation structure 301 facing away from the substrate 10 on the substrate 10, which can reduce the area of ​​the orthographic projection of the protective layer 80 on the substrate 10 and reduce the material usage of the protective layer 80. In this way, the preparation time of the protective layer can be reduced, which is conducive to improving the preparation efficiency of the display panel 100.

[0157] See also Figure 6In some embodiments, the display panel provided in the embodiment of the present application further includes a second electrode 44, the second electrode 44 is located on the side of the light emitting unit 41 away from the substrate 10, and the second electrode 44 is electrically connected to the isolation structure 30. It can be understood that the second electrode 44 can put the light emitting unit 41 in a passage, so that the light emitting unit 41 can emit light.

[0158] Optionally, the isolation structure 30 includes a first layer 31 and a second layer 32 stacked in a direction away from the substrate 10 , the orthographic projection of the first layer 31 on the substrate is located within the orthographic projection of the second layer 32 on the substrate, and the second electrode is electrically connected to the first layer 31 .

[0159] Optionally, the first layer 31 includes a first sub-layer 311 and a second sub-layer 312 stacked in a direction away from the substrate.

[0160] Optionally, the orthographic projection of the second sub-layer 312 on the substrate is located within the orthographic projection of the first sub-layer 311 on the substrate.

[0161] See also Figure 7 In some embodiments, in a first direction (eg Figure 7 In the X direction in the figure, the side edge of the orthogonal projection of the dummy light emitting unit 42 on the substrate 10 away from the adjacent light emitting unit 41 is the first edge 401, the side edge of the orthogonal projection of the light emitting unit 41 adjacent to the dummy light emitting unit 42 on the substrate 10 close to the dummy light emitting unit 42 is the second edge 402, and the distance between the first edge 401 and the second edge 402 is d. The side edge of the orthogonal projection of one of the two adjacent light emitting units 41 on the substrate 10 away from the other is the third edge 403, the side edge of the orthogonal projection of the other of the two adjacent light emitting units 41 on the substrate 10 close to one is the fourth edge 404, and the distance between the third edge 403 and the fourth edge 404 is e. Among them, 0.5e≤d≤2e.

[0162] It is understandable that providing the dummy light emitting unit 42 can help avoid the adverse effects of the electrostatic test on the light emitting unit 41 , and the size of the dummy light emitting unit 42 can be set according to the model size of the display panel 100 and the scenario of the electrostatic test.

[0163] See also Figure 8In some other embodiments, the pixel definition layer 20 includes a first pixel opening 21 and a second pixel opening 22, the first pixel opening 21 is connected to the first isolation opening 3011, and the second pixel opening 22 is connected to the second isolation opening 3021. In the first direction, the edge of the orthogonal projection of the second pixel opening 22 on the substrate 10 away from the adjacent first pixel opening 21 is the first edge 401, and the edge of the orthogonal projection of the first pixel opening 21 adjacent to the second pixel opening 22 on the substrate 10 close to the second pixel opening 22 is the second edge 402. The side edge of the orthogonal projection of one of the two adjacent first pixel openings 21 on the substrate 10 away from the other is the third edge 403, and the side edge of the orthogonal projection of the other of the two adjacent first pixel openings 21 on the substrate 10 close to one is the fourth edge 404. The distance between the first edge 401 and the second edge 402 is d, and the distance between the third edge 403 and the fourth edge 404 is e, and 0.5e≤d≤2e.

[0164] See also Fig. 9 In some other embodiments, in the first direction, the distance between the center of the orthographic projection of the virtual light-emitting unit 42 on the substrate 10 and the center of the orthographic projection of the adjacent light-emitting unit 41 on the substrate 10 is d, and the distance between the centers of the orthographic projections of two adjacent light-emitting units 41 on the substrate 10 is e, and 0.5e≤d≤2e.

[0165] Optionally, the first direction is parallel to the surface where the substrate 10 is located.

[0166] Optionally, the plurality of light emitting units 41 include a plurality of rows and a plurality of columns, and a plurality of rows of light emitting units 41 are arranged along the first direction, or a plurality of columns of light emitting units 41 are arranged along the first direction.

[0167] Exemplarily, d = 0.5e. Exemplarily, d = 0.6e. Exemplarily, d = 0.7e. Exemplarily, d = 0.8e. Exemplarily, d = 0.9e. Exemplarily, d = 1.0e. Exemplarily, d = 1.1e. Exemplarily, d = 1.2e. Exemplarily, d = 1.3e. Exemplarily, d = 1.4e. Exemplarily, d = 1.5e. Exemplarily, d = 1.6e. Exemplarily, d = 1.7e. Exemplarily, d = 1.8e. Exemplarily, d = 1.9e. Exemplarily, d = 2.0e.

[0168] In some embodiments, the orthographic projection of the protective layer on the substrate 10 surrounds at least part of the orthographic projection of the light emitting unit 41 on the substrate 10. It is understandable that the protective layer surrounds at least part of the light emitting unit 41, and can protect the light emitting unit 41 from multiple directions. In addition, the protective layer can also protect the light emitting unit 41 and the isolation structure 30 in the subsequent etching process.

[0169] Please also read Fig.10 and Fig.11 In some embodiments, the light emitting unit 41 includes a first light emitting unit, a second light emitting unit and a third light emitting unit. The first encapsulation layer 50 includes a plurality of encapsulation parts, and the plurality of encapsulation parts respectively cover the light emitting unit 41 and the dummy light emitting unit 42, thereby providing an encapsulation and protection effect on the light emitting unit 41 and the dummy light emitting unit 42.

[0170] Optionally, the plurality of encapsulation parts include a first encapsulation part 51, a second encapsulation part 52 and a third encapsulation part 53. The orthographic projection of the first light-emitting unit on the substrate 10 is located within the orthographic projection of the first encapsulation part 51 on the substrate 10, that is, the first encapsulation part 51 covers the first light-emitting unit, the orthographic projection of the second light-emitting unit on the substrate 10 is located within the orthographic projection of the second encapsulation part 52 on the substrate 10, that is, the second encapsulation part 52 covers the second light-emitting unit, and the orthographic projection of the third light-emitting unit on the substrate 10 is located within the orthographic projection of the third encapsulation part 53 on the substrate 10, that is, the third encapsulation part 53 covers the third light-emitting unit.

[0171] The protective layer includes multiple protective parts, and the multiple protective parts include a first protective part 81, a second protective part 82 and a third protective part 83. The orthographic projection of the first protective part 81 on the substrate 10 at least partially surrounds the orthographic projection of the first light-emitting unit on the substrate 10, the orthographic projection of the second protective part 82 on the substrate 10 at least partially surrounds the orthographic projection of the second light-emitting unit on the substrate 10, and the orthographic projection of the third protective part 83 on the substrate 10 at least partially surrounds the orthographic projection of the third light-emitting unit on the substrate 10.

[0172] It is understandable that the first protection portion 81 can protect the first light-emitting unit and prevent the electrostatic test from affecting the first light-emitting unit. The first protection portion 81 can also protect the first light-emitting unit, the first packaging portion 51 and the isolation structure 30 in the subsequent etching process.

[0173] Similarly, the second protection portion 82 can protect the second light emitting unit, prevent the electrostatic test from affecting the second light emitting unit, and protect the second light emitting unit, the second packaging portion 52 and the isolation structure 30 in the subsequent etching process.

[0174] Similarly, the third protection portion 83 can protect the third light-emitting unit and prevent the electrostatic test from affecting the third light-emitting unit.

[0175] Optionally, the orthographic projection of the first protection portion 81 on the substrate 10 overlaps with the orthographic projection of the second protection portion 82 on the substrate 10. It is understandable that the preparation order of the first protection portion 81 and the second protection portion 82 is different, and the second protection portion 82 can be prepared before the first protection portion 81, or after the first protection portion 81.

[0176] Optionally, the orthographic projection of the first protection portion 81 on the substrate 10 overlaps with the orthographic projection of the third protection portion 83 on the substrate 10. It is understandable that the preparation order of the first protection portion 81 and the third protection portion 83 is different, and the third protection portion 83 can be prepared before the first protection portion 81, and the third protection portion 83 can also be prepared after the first protection portion 81.

[0177] Optionally, the orthographic projection of the second protection portion 82 on the substrate 10 overlaps with the orthographic projection of the third protection portion 83 on the substrate 10. It is understandable that the preparation order of the second protection portion 82 and the third protection portion 83 is different, and the third protection portion 83 can be prepared before the second protection portion 82, or after the second protection portion 82.

[0178] In some embodiments, the material of the protective layer 80 includes an organic material. Alternatively, the material of the protective layer 80 includes an organic glue. Alternatively, the material of the protective layer 80 includes polyimide.

[0179] Exemplarily, the substrate 10 includes a planar layer 11, and the material of the protective layer 80 is consistent with the material of the planar layer 11. It is understood that the planar layer 11 can cover the conductive layer 12. In addition, the planar layer 11 can be provided with a via hole, and the via hole exposes at least a portion of the conductive layer 12, so that the first electrode 43 can be connected to the conductive layer 12.

[0180] In some embodiments, the display panel 100 provided in the embodiment of the present application further includes a second encapsulation layer 60, which is located on the side of the first encapsulation layer 50 and the protective layer 80 away from the substrate 10. It is understood that the second encapsulation layer 60 can further protect the light emitting unit 41.

[0181] It is understandable that when the display panel 100 provided in the embodiment of the present application only has the second encapsulation layer 60, the electrostatic test may still cause damage to the light emitting unit 41. The protective layer 80 can work together with the second encapsulation layer 60 to provide a protective effect on the light emitting unit 41, reducing the risk of damage to the light emitting unit 41 during the electrostatic test.

[0182] Optionally, a surface of the second isolation structure 302 on the side of the dummy light-emitting unit 42 away from the light-emitting unit 41, which is away from the substrate 10, is adjacent to the second encapsulation layer 60. That is, the second isolation structure 302 on the side of the dummy light-emitting unit 42 away from the light-emitting unit 41 may not be protected by the second encapsulation layer 60, and the light-emitting effect of the display panel 100 will not be affected even if current is introduced into the dummy light-emitting unit 42.

[0183] Optionally, the display panel 100 provided in the embodiment of the present application further includes a third encapsulation layer 70, which is located on a side of the second encapsulation layer 60 away from the substrate 10. It is understandable that the third encapsulation layer 70 can further protect the light emitting unit 41.

[0184] Similarly, when the display panel 100 provided in the embodiment of the present application only has the second encapsulation layer 60 and the third encapsulation layer 70, the electrostatic test may still cause damage to the light-emitting unit 41. The protective layer 80 can work together with the second encapsulation layer 60 and the third encapsulation layer 70 to provide a protective effect on the light-emitting unit 41, reducing the risk of damage to the light-emitting unit 41 during the electrostatic test.

[0185] The embodiment of the present application also provides another display panel 100, which is different from the first display panel 100 described above in that the display panel 100 includes a plurality of light-emitting units 41, and a first encapsulation layer 50 and a protective layer 80 are disposed on the side of the light-emitting unit 41 facing away from the substrate 10. The protective layer 80 is located on the side of the isolation structure 30 facing away from the substrate 10, and covers at least a portion of the surface of the isolation structure 30 facing away from the substrate 10, the second encapsulation layer 60 is located on the first encapsulation layer 50 and on the side facing away from the substrate 10, and the third encapsulation layer 70 is located on the side of the second encapsulation layer 60 facing away from the substrate 10.

[0186] It is understandable that the display panel 100 provided in the embodiment of the present application utilizes the first encapsulation layer 50 and the protective layer 80 to jointly protect the light-emitting unit 41, thereby improving the protection effect of the light-emitting unit 41. In this way, the display panel 100 provided in the embodiment of the present application can improve the impact on the light-emitting unit 41 during the electrostatic test, which is conducive to improving the performance.

[0187] Optionally, the display panel 100 provided in the embodiment of the present application may not be provided with a dummy light emitting unit 42. Of course, the display panel 100 provided in the embodiment of the present application may also be provided with a dummy light emitting unit 42 to further improve the impact on the light emitting unit 41 during the electrostatic test, which is conducive to further improving the performance.

[0188] See also Fig.12Optionally, the protective layer 80 can be a film layer that is integrally and simultaneously prepared. Optionally, the protective layer 80 can cover the light-emitting unit 41 of the entire display area AA. Optionally, the protective layer 80 can cover the light-emitting unit 41 and the dummy light-emitting unit. It is understandable that when the protective layer 80 includes a plurality of protective portions, some portions overlapping the protective layer 80 and the first encapsulation layer 50 need to be removed by etching or other processes, and the remaining portions form the protective portions. The display panel 100 provided in the embodiment of the present application can form the protective layer 80 using an integral film layer, which can reduce subsequent process flows and is beneficial to saving time and manufacturing.

[0189] See also Fig.13 , Fig.14 , Fig.15 , Fig.16 , Fig.17 as well as Fig.18 The embodiment of the present application also provides a method for preparing a display panel 100. The preparation method provided in the embodiment of the present application can prepare the display panel 100 of any of the above embodiments.

[0190] See also Fig.13 In some embodiments, the preparation method provided in the embodiments of the present application includes:

[0191] S1, providing a substrate 10;

[0192] S2, preparing a pixel definition layer 20 on one side of the substrate 10;

[0193] S3, preparing an isolation structure 30 on one side of the substrate 10, wherein the isolation structure 30 is located on a side of the pixel definition layer 20 away from the substrate 10;

[0194] S4, preparing a light-emitting unit 41, a first encapsulation layer 50 and a protective layer 80, wherein the orthographic projection of the light-emitting unit 41 on the substrate 10 overlaps with the orthographic projection of the isolation opening on the substrate 10, the orthographic projection of the light-emitting unit 41 on the substrate 10 is located within the orthographic projection of the first encapsulation layer 50 on the substrate 10, and the protective layer 80 is located on a side of the isolation structure 30 facing away from the substrate 10, and covers at least a portion of the surface of the isolation structure 30 facing away from the substrate 10;

[0195] S5, preparing a second encapsulation layer 60, wherein the second encapsulation layer 60 is located on the first encapsulation layer 50 and on a side away from the substrate 10;

[0196] S6 , preparing a third encapsulation layer 70 , wherein the third encapsulation layer 70 is located on a side of the second encapsulation layer 60 facing away from the substrate 10 .

[0197] The preparation method provided in the embodiment of the present application can enable the prepared display panel 100 to be provided with a protective layer 80, and use the protective layer 80 to block current transmission and cover at least part of the surface of the isolation structure 30 away from the substrate 10, thereby improving the impact on the light-emitting unit 41 during electrostatic testing, which is beneficial to improving performance.

[0198] It is understandable that, while preparing the light-emitting unit 41 , the dummy light-emitting unit 42 may also be prepared.

[0199] See also Fig.14 In some embodiments, in step S4, preparing the light emitting unit 41, the first encapsulation layer 50 and the protective layer 80 includes:

[0200] S41, preparing a light-emitting unit 41 and a first encapsulation layer 50;

[0201] S42, preparing a protective layer 80.

[0202] It is understandable that the preparation method provided in the embodiment of the present application can first prepare the light-emitting unit 41 and the first encapsulation layer 50, and then prepare the protective layer 80. The protective layer 80 is used to improve the impact of the electrostatic test on the light-emitting unit 41, which is beneficial to improving the performance.

[0203] In this way, the preparation method provided in the embodiment of the present application can prepare Figure 3 , Figure 4 , Figure 5 , Figure 6 or Fig.12 The display panel 100.

[0204] See also Fig.15 In some embodiments, in step S41, preparing the light emitting unit 41 and the first encapsulation layer 50 includes:

[0205] S411, patterning the isolation structure 30 to form an isolation opening;

[0206] S412, patterning the pixel definition layer 20 to form a pixel opening, wherein the orthographic projection of the pixel opening on the substrate 10 is located within the orthographic projection of the isolation opening on the substrate 10;

[0207] S413, preparing a first light-emitting unit and a first packaging part 51;

[0208] S414, preparing a second light emitting unit and a second packaging part 52;

[0209] S415 , preparing a third light emitting unit and a third packaging part 53 .

[0210] It is understandable that the preparation method provided in the embodiment of the present application can prepare all the isolation openings and pixel openings first, and then prepare the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit in sequence. The first encapsulation part 51 is prepared at the same time as the first light-emitting unit, the second encapsulation part 52 is prepared at the same time as the second light-emitting unit, and the third encapsulation part 53 is prepared at the same time as the third light-emitting unit.

[0211] Optionally, the pixel opening may include a first pixel opening 21 and a second pixel opening 22 .

[0212] See also Fig.16 In some other embodiments, in step S41, preparing the light emitting unit 41 and the first encapsulation layer 50 includes:

[0213] S411, patterning the isolation structure 30 to form a first isolation opening 3011;

[0214] S412, patterning the pixel definition layer 20 to form a first pixel opening 21;

[0215] S413, preparing a first light-emitting unit and a first packaging part 51;

[0216] S414, patterning the isolation structure 30 to form a second isolation opening 3021;

[0217] S415, patterning the pixel definition layer 20 to form a second pixel opening 22;

[0218] S416, preparing a second light emitting unit and a second packaging part 52;

[0219] S417, patterning the isolation structure 30 to form a third isolation opening;

[0220] S418, patterning the pixel definition layer 20 to form a third pixel opening;

[0221] S419, preparing a third light emitting unit and a third packaging part 53.

[0222] It is understandable that the preparation method provided in the embodiment of the present application can first prepare the first isolation opening 3011 and the first pixel opening 21, and then prepare the first light-emitting unit and the first packaging part 51. After preparing the first packaging part 51, prepare the second isolation opening 3021 and the second pixel opening 22, and then prepare the second light-emitting unit and the second packaging part 52. After preparing the second packaging part 52, prepare the third isolation opening and the third pixel opening, and finally prepare the third light-emitting unit and the third packaging part 53.

[0223] See also Fig.17 In some other embodiments, in step S41, preparing the light emitting unit 41 and the first encapsulation layer 50 includes:

[0224] S411 , patterning the isolation structure 30 to form a first isolation opening 3011 and a second isolation opening 3021 ;

[0225] S412, patterning the pixel definition layer 20 to form a first pixel opening 21 and a second pixel opening 22;

[0226] S413, preparing a first light-emitting unit and a first packaging part 51;

[0227] S414, preparing a second light emitting unit and a second packaging part 52;

[0228] S415, patterning the isolation structure 30 to form a third isolation opening;

[0229] S416, patterning the pixel definition layer 20 to form a third pixel opening;

[0230] S417 , preparing a third light emitting unit and a third packaging part 53 .

[0231] It is understandable that the preparation method provided in the embodiment of the present application can first prepare the first isolation opening 3011 and the second isolation opening 3021, then prepare the first pixel opening 21 and the second pixel opening 22, and then prepare the first light-emitting unit, the first packaging part 51, the second light-emitting unit, and the second packaging part 52. Then prepare the third isolation opening and the third pixel opening, and finally prepare the third light-emitting unit and the third packaging part 53.

[0232] See also Fig.18 In some embodiments, the light-emitting unit 41 includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit, the first encapsulation layer 50 includes a plurality of encapsulation parts, the encapsulation parts include a first encapsulation part 51, a second encapsulation part 52, and a third encapsulation part 53, and the protective layer 80 includes a plurality of protective layers, the protective layer includes a first protective part 81, a second protective part 82, and a third protective part 83.

[0233] In step S4, preparing the light emitting unit 41, the first encapsulation layer 50 and the protective layer 80 includes:

[0234] S41, preparing a first light-emitting unit and a first packaging part 51;

[0235] S42, preparing a first protection portion 81;

[0236] S43, preparing a second light-emitting unit and a second packaging part 52;

[0237] S44, preparing a second protection portion 82;

[0238] S45, preparing a third light emitting unit and a third packaging part 53;

[0239] S46, preparing the third protection portion 83.

[0240] The display panel 100 provided in the embodiment of the present application can directly prepare the first protection part 81 after preparing the first light-emitting unit and the first packaging part 51, and the first protection part 81 can be used to protect the first light-emitting unit and the first packaging part 51. The display panel 100 provided in the embodiment of the present application can also directly prepare the second protection part 82 after preparing the second light-emitting unit and the second packaging part 52, and the second protection part 82 can be used to protect the second light-emitting unit and the second packaging part 52. The display panel 100 provided in the embodiment of the present application prepares the third protection part 83 last after preparing the third light-emitting unit and the third packaging part 53.

[0241] In this way, the preparation method provided in the embodiment of the present application can prepare Fig.11 The display panel.

[0242] The embodiment of the present application also provides a display device, which includes the display panel 100 of any of the above embodiments. The display device provided by the present application has the same or similar technical effects as the display panel 100 of any of the above embodiments, which will not be described in detail here.

[0243] Optionally, the display device can be an electronic product such as a mobile phone, a television, a tablet computer, a laptop computer, a desktop computer, a vehicle-mounted display terminal, a wearable device, a human-computer interaction terminal device, etc.

[0244] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel has a first area and a second area at least partially surrounding the first area, and the display panel includes: substrate; An isolation structure, located at one side of the substrate, the isolation structure comprising a first isolation structure and a second isolation structure, the first isolation structure is located in the first area, the first isolation structure encloses a plurality of first isolation openings, the second isolation structure is located in the second area, the second isolation structure encloses a plurality of second isolation openings; A plurality of light-emitting units are located on one side of the substrate and in the first area, and the orthographic projections of the light-emitting units on the substrate overlap with the orthographic projections of the first isolation openings on the substrate; A plurality of dummy light emitting units are located on one side of the substrate and in the second area, and the orthographic projections of the dummy light emitting units on the substrate overlap with the orthographic projections of the second isolation openings on the substrate.

2. The display panel according to claim 1, wherein: The display panel further includes: A first encapsulation layer is located on a side of the light-emitting unit and the dummy light-emitting unit away from the substrate, the first encapsulation layer comprises a plurality of encapsulation parts, and the plurality of encapsulation parts respectively cover the light-emitting unit and the dummy light-emitting unit; a protective layer, the protective layer comprising an insulating material, the protective layer being located on a side of the isolation structure facing away from the substrate, and the protective layer covering at least a portion of a surface of the isolation structure facing away from the substrate; Preferably, the protective layer covers at least a portion of a surface of the first isolation structure facing away from the substrate; Preferably, an orthographic projection of a surface of the first isolation structure facing away from the substrate on the substrate is located within an orthographic projection of the protection layer and the packaging portion on the substrate; Preferably, the orthographic projections of the surfaces of the first isolation structure and the second isolation structure facing away from the substrate on the substrate are located within the orthographic projections of the protection layer and the packaging portion on the substrate.

3. The display panel according to claim 2, wherein: There is a gap between two adjacent packaging parts, the gap exposes at least a portion of the surface of the first isolation structure facing away from the substrate, and the gap is filled with at least a portion of the protective layer; Preferably, an orthographic projection of the gap on the substrate is located within an orthographic projection of the protective layer on the substrate.

4. The display panel according to claim 2, wherein: The orthographic projection of the encapsulation portion on the substrate overlaps with the orthographic projection of the protection layer on the substrate; The orthographic projection of the protection layer on the substrate is located within the orthographic projection of the surface of the first isolation structure facing away from the substrate on the substrate.

5. The display panel according to claim 2, wherein: The orthographic projection of the protective layer on the substrate surrounds at least part of the orthographic projection of the light-emitting unit on the substrate; Preferably, the light-emitting unit includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the first encapsulation layer includes a plurality of encapsulation parts, the plurality of encapsulation parts include a first encapsulation part, a second encapsulation part and a third encapsulation part, the protective layer includes a plurality of protection parts, the plurality of protection parts include a first protection part, a second protection part and a third protection part, the first encapsulation part covers the first light-emitting unit, the second encapsulation part covers the second light-emitting unit, the third encapsulation part covers the third light-emitting unit, the orthographic projection of the first protection part on the substrate at least partially surrounds the orthographic projection of the first light-emitting unit on the substrate, the orthographic projection of the second protection part on the substrate at least partially surrounds the orthographic projection of the second light-emitting unit on the substrate, and the orthographic projection of the third protection part on the substrate at least partially surrounds the orthographic projection of the third light-emitting unit on the substrate; Preferably, the orthographic projection of the first protection portion on the substrate overlaps with the orthographic projection of the second protection portion on the substrate; Preferably, the orthographic projection of the first protection portion on the substrate overlaps with the orthographic projection of the third protection portion on the substrate; Preferably, an orthographic projection of the second protection portion on the substrate overlaps with an orthographic projection of the third protection portion on the substrate.

6. The display panel according to claim 2, wherein: The material of the protective layer includes organic material; Preferably, the material of the protective layer includes organic glue; Preferably, the material of the protective layer includes polyimide; Preferably, the substrate comprises a flat layer, and a material of the protective layer is consistent with a material of the flat layer.

7. The display panel according to claim 2, wherein: The display panel further includes a second encapsulation layer, which is located on a side of the first encapsulation layer and the protective layer away from the substrate; The second isolation structure of the dummy light-emitting unit, which is away from the light-emitting unit, has a surface on one side facing away from the substrate and is adjacent to the second encapsulation layer; Preferably, the display panel further comprises a third encapsulation layer, and the third encapsulation layer is located on a side of the second encapsulation layer away from the substrate.

8. The display panel according to claim 1, wherein: The first isolation structure and the second isolation structure are provided in the same layer and with the same material; Preferably, the first isolation structure and the second isolation structure are connected as one body or are insulated from each other; Preferably, the first area is a display area, and the second area is a non-display area.

9. The display panel according to claim 1, wherein: The substrate includes a transistor, the light-emitting unit is electrically connected to the transistor, and the dummy light-emitting unit is not connected to the transistor; Preferably, the substrate comprises an insulating layer covering the transistor, the insulating layer comprises a via hole, and the light emitting unit is electrically connected to the transistor via a line passing through the via hole.

10. The display panel according to claim 9, wherein: At least part of the light emitting units and at least part of the dummy light emitting units are provided in the same layer and with the same material.

11. The display panel according to claim 10, wherein: The display panel further includes a first electrode layer, the first electrode layer includes a plurality of first electrodes, and the first electrodes are located on a side of the light emitting unit and the dummy light emitting unit facing the substrate; The first electrode corresponding to the light-emitting unit is electrically connected to the transistor, and the first electrode corresponding to the dummy light-emitting unit is not connected to the transistor.

12. The display panel according to claim 10, wherein: The display panel further includes a first electrode layer, the first electrode layer includes a plurality of first electrodes, the first electrodes are located on a side of the light emitting unit facing the substrate, and the first electrodes are electrically connected to the transistor; Wherein, the orthographic projection of the first electrode on the substrate does not overlap with the orthographic projection of the dummy light-emitting unit on the substrate; Alternatively, the display panel also includes a pixel definition layer, which is located on the side of the first electrode layer away from the substrate, the isolation structure is located on the side of the pixel definition layer away from the substrate, the pixel definition layer includes a pixel opening, the pixel opening exposes a portion of the first electrode, the pixel opening is interconnected with the first isolation opening, and the pixel opening is not connected with the second isolation opening.

13. The display panel according to claim 1, wherein: In the first direction, the side edge of the orthogonal projection of the dummy light-emitting unit on the substrate away from the adjacent light-emitting unit is the first edge, the side edge of the orthogonal projection of the light-emitting unit adjacent to the dummy light-emitting unit on the substrate close to the dummy light-emitting unit is the second edge, the distance between the first edge and the second edge is d, the side edge of the orthogonal projection of one of the two adjacent light-emitting units on the substrate away from the other is the third edge, the side edge of the orthogonal projection of the other of the two adjacent light-emitting units on the substrate close to the one is the fourth edge, the distance between the third edge and the fourth edge is e, 0.5e≤d≤2e; Alternatively, the display panel further comprises a pixel definition layer and a first electrode layer, the first electrode layer comprises a plurality of first electrodes, the first electrode is located on a side of the light emitting unit facing the substrate, the pixel definition layer is located on a side of the first electrode layer away from the substrate, the isolation structure is located on a side of the pixel definition layer away from the substrate, the pixel definition layer comprises a first pixel opening and a second pixel opening, the first pixel opening is connected to the first isolation opening, the second pixel opening is connected to the second isolation opening, in a first direction, an edge of the orthogonal projection of the second pixel opening on the substrate away from the adjacent first pixel opening is a first edge, an edge of the orthogonal projection of the first pixel opening adjacent to the second pixel opening on the substrate close to the second pixel opening is a second edge, an edge of a side of the orthogonal projection of one of two adjacent first pixel openings on the substrate away from the other is a third edge, an edge of a side of the orthogonal projection of the other of two adjacent first pixel openings on the substrate close to the one is a fourth edge, a distance between the first edge and the second edge is d, a distance between the third edge and the fourth edge is e, 0.5e≤d≤2e; Preferably, the first direction is parallel to the surface where the substrate is located; Preferably, the plurality of light emitting units include a plurality of rows and a plurality of columns, and the plurality of rows of light emitting units are arranged along the first direction, or the plurality of columns of light emitting units are arranged along the first direction.

14. The display panel according to claim 1, wherein: In the first direction, the distance between the center of the orthographic projection of the dummy light-emitting unit on the substrate and the center of the orthographic projection of the adjacent light-emitting unit on the substrate is d, and the distance between the centers of the orthographic projections of two adjacent light-emitting units on the substrate is e, 0.5e≤d≤2e; Preferably, the first direction is parallel to the surface where the substrate is located; Preferably, the plurality of light emitting units include a plurality of rows and a plurality of columns, and the plurality of rows of light emitting units are arranged along the first direction, or the plurality of columns of light emitting units are arranged along the first direction.

15. The display panel according to claim 1, wherein: The display panel further includes: A second electrode, located at a side of the light-emitting unit away from the substrate, the second electrode being electrically connected to the isolation structure; Preferably, the isolation structure comprises a first layer and a second layer stacked in a direction away from the substrate, an orthographic projection of the first layer on the substrate is located within an orthographic projection of the second layer on the substrate, and the second electrode is electrically connected to the first layer; Preferably, the first layer comprises a first sublayer and a second sublayer stacked in a direction away from the substrate; Preferably, the orthographic projection of the second sub-layer on the substrate is located within the orthographic projection of the first sub-layer on the substrate.

16. A display panel, characterized in that: The display panel comprises: substrate; An isolation structure, the isolation structure is located on one side of the substrate and encloses a plurality of isolation openings; A plurality of light-emitting units are located on one side of the substrate and on the side where the isolation structure is located, and the orthographic projection of the light-emitting unit on the substrate overlaps with the orthographic projection of the isolation opening on the substrate; A first encapsulation layer is located on a side of the light-emitting unit away from the substrate, and an orthographic projection of the light-emitting unit on the substrate is located within an orthographic projection of the first encapsulation layer on the substrate; A protection layer, wherein the protection layer comprises an insulating material, is located on a side of the isolation structure away from the substrate, and covers at least a portion of a surface of the isolation structure away from the substrate.

17. A method for preparing a display panel, characterized in that: include: providing a substrate; preparing an isolation structure on one side of the substrate; A light-emitting unit, a first encapsulation layer and a protective layer are prepared, wherein the orthographic projection of the light-emitting unit on the substrate overlaps with the orthographic projection of the isolation opening on the substrate, the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the first encapsulation layer on the substrate, and the protective layer is located on a side of the isolation structure facing away from the substrate and covers at least a portion of the surface of the isolation structure facing away from the substrate.

18. The preparation method according to claim 17, characterized in that: The preparation of the light-emitting unit, the first encapsulation layer and the protective layer comprises: preparing the light-emitting unit and the first encapsulation layer; The protective layer is prepared.

19. The preparation method according to claim 17, characterized in that: The light-emitting unit includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the first encapsulation layer includes a plurality of encapsulation parts, the plurality of encapsulation parts include a first encapsulation part, a second encapsulation part and a third encapsulation part, the protective layer includes a plurality of protection parts, the plurality of protection parts include a first protection part, a second protection part and a third protection part; The preparation of the light-emitting unit, the first encapsulation layer and the protective layer comprises: preparing the first light-emitting unit and the first packaging part; preparing the first protecting portion; preparing the second light-emitting unit and the second packaging part; preparing the second protecting portion; preparing the third light-emitting unit and the third packaging part; The third protecting portion is prepared.

20. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 16, and / or a display panel prepared by the preparation method as claimed in any one of claims 17 to 19.

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