Display panel, preparation method of display panel and electronic equipment

Abstract

The embodiment of the invention provides a display panel, a preparation method of the display panel and electronic equipment, and relates to the technical field of display, the display panel comprises a display area and a non-display area surrounding at least part of the display area, the display panel comprises a substrate, an isolation conducting layer and a first dam, the isolation conducting layer and the first dam are located on one side of the substrate, and the isolation conducting layer is located on the other side of the substrate. The isolation conducting layer comprises an isolation structure and a blocking column, the isolation structure is located in the display area, and the blocking column and the first dam are located in the non-display area. According to the display panel, the blocking columns which are arranged on the same layer as the isolation structures are formed in the non-display area, a better blocking effect can be achieved on the material of the second packaging layer, the material of the second packaging layer is not prone to overflowing, external water vapor is not prone to entering the display area, and therefore the display effect of the display panel can be improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display panels.

[0003] However, there are still some problems with display panels that need to be solved urgently. Summary of the invention

[0004] In order to overcome the technical problems mentioned in the above technical background, an embodiment of the present application provides a display panel, wherein the display panel includes a display area and a non-display area surrounding at least a portion of the display area, and the display panel includes:

[0005] substrate;

[0006] An isolation conductive layer and a first dam are located on one side of the substrate, wherein the isolation conductive layer comprises an isolation structure and a blocking column, the isolation structure is located in the display area, and the blocking column and the first dam are both located in the non-display area.

[0007] In some possible implementations, the display panel further includes a second dam located at one side of the substrate, the second dam is located in the non-display area, and the barrier column is located between the first dam and the second dam;

[0008] Preferably, the blocking column is located on a side of the first dam away from the display area;

[0009] Preferably, the orthographic projection of the second dam on the substrate at least partially surrounds the orthographic projection of the display area on the substrate.

[0010] In some possible implementations, the orthographic projection of the blocking column on the substrate at least partially surrounds the orthographic projection of the display area on the substrate;

[0011] Preferably, the orthographic projection of the first dam on the substrate at least partially surrounds the orthographic projection of the display area on the substrate.

[0012] In some possible implementations, the number of the blocking columns is multiple;

[0013] Preferably, an orthographic projection of the barrier pillar on the substrate surrounds an orthographic projection of the display area on the substrate.

[0014] In some possible implementations, the blocking column and the isolation structure are disposed in the same layer;

[0015] Preferably, the blocking column and the isolation structure are made of the same material;

[0016] Preferably, the blocking column comprises a first blocking portion and a second blocking portion which are sequentially stacked in a direction away from the substrate, and an orthographic projection of a side of the first blocking portion away from the substrate on the substrate is located within an orthographic projection of the second blocking portion on the substrate;

[0017] Preferably, the blocking column further comprises a third blocking portion located on a side of the first blocking portion facing the substrate;

[0018] Preferably, the first blocking portion comprises a conductive material; and / or the second blocking portion comprises a conductive material; and / or the third blocking portion comprises a conductive material;

[0019] Preferably, the material of the third blocking part includes molybdenum metal; and / or the material of the first blocking part includes aluminum metal; and / or the material of the second blocking part includes titanium metal.

[0020] In some possible implementations, the display panel further includes a second planarization layer located on one side of the substrate, the second planarization layer includes a first planarization portion, and the first dam includes the first planarization portion;

[0021] Preferably, the display panel further comprises a pixel defining layer located on a side of the second planarization layer away from the substrate, the pixel defining layer comprises a first pixel defining portion, and the first dam comprises at least a portion of the first pixel defining portion.

[0022] In some possible implementations, the display panel further includes a first planarization layer located on one side of the substrate, the first planarization layer includes a second planarization portion, and the second dam includes the second planarization portion;

[0023] Preferably, the display panel further comprises a conductive layer located on a side of the first planarization layer away from the substrate, the conductive layer comprises a conductive portion, and the second dam comprises at least a portion of the conductive portion;

[0024] Preferably, the display panel further comprises a second planarization layer located on a side of the conductive layer away from the substrate, the second planarization layer comprises a third planarization portion, and the second dam comprises the third planarization portion;

[0025] Preferably, the display panel further comprises a pixel defining layer located on a side of the second planarization layer away from the substrate, the pixel defining layer comprises a second pixel defining portion, and the second dam comprises at least a portion of the second pixel defining portion.

[0026] In some possible implementations, the isolation structure encloses to form an isolation opening, and the display panel further includes a light emitting unit at least partially located in the isolation opening;

[0027] Preferably, the light-emitting unit comprises a first electrode, a light-emitting portion and a second electrode which are sequentially stacked in a direction away from the substrate;

[0028] Preferably, the isolation structure comprises a conductive material, and the second electrode extends to be electrically connected to the isolation structure;

[0029] Preferably, the first electrode comprises an anode, and / or the second electrode comprises a cathode.

[0030] In some possible implementations, the isolation structure includes a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, and an orthographic projection of a side of the first isolation portion away from the substrate on the substrate is located within an orthographic projection of the second isolation portion on the substrate;

[0031] Preferably, the second electrode is electrically connected to the first isolation portion; and / or the isolation structure further comprises a third isolation portion located on a side of the first isolation portion facing the substrate, and the second electrode is electrically connected to the third isolation portion;

[0032] Preferably, the orthographic projection of the light-emitting portion on the substrate is located outside the orthographic projection of the third isolation portion and / or the first isolation portion on the substrate;

[0033] Preferably, the material of the third isolation portion includes molybdenum metal; and / or the material of the first isolation portion includes aluminum metal; and / or the material of the second isolation portion includes titanium metal.

[0034] In some possible implementations, the display panel further includes a pixel defining layer located on a side of the first electrode away from the substrate, and the isolation structure is located on a side of the pixel defining layer away from the substrate; the pixel defining layer includes a pixel opening exposing at least a portion of the first electrode;

[0035] Preferably, an orthographic projection of the pixel opening on the substrate is located within an orthographic projection of the isolation opening on the substrate.

[0036] In some possible implementations, the display panel further includes a first encapsulation layer located on a side of the second electrode layer away from the substrate, the first encapsulation layer includes a plurality of encapsulation units arranged at intervals, at least some of the encapsulation units extend from a side of the isolation structure to a side of the isolation structure away from the substrate, and the side of the isolation structure is a surface of the isolation structure facing the isolation opening;

[0037] Preferably, the encapsulation unit is arranged at intervals on a side of the isolation structure away from the substrate;

[0038] Preferably, there is a gap between the packaging unit located on a side of the isolation structure away from the substrate and a side of the isolation structure away from the substrate;

[0039] Preferably, the orthographic projection of the encapsulation unit on the substrate covers the orthographic projection of the isolation opening on the substrate and covers a portion of the orthographic projection of the isolation structure on the substrate.

[0040] In some possible implementations, the display panel further includes a second encapsulation layer located on a side of the first encapsulation layer away from the substrate and a third encapsulation layer located on a side of the second encapsulation layer away from the substrate;

[0041] Preferably, the materials of the first encapsulation layer and the third encapsulation layer both include inorganic materials;

[0042] Preferably, the material of the second encapsulation layer comprises an organic material;

[0043] Preferably, the third encapsulation layer extends from the display area to the non-display area;

[0044] Preferably, the third encapsulation layer covers the blocking pillar;

[0045] Preferably, the third encapsulation layer covers the second dam;

[0046] Preferably, the second encapsulation layer is located on a side of the barrier column close to the display area.

[0047] In some possible implementations, the present application further provides a method for preparing a display panel, wherein the display panel includes a display area and a non-display area surrounding at least a portion of the display area, and the method includes:

[0048] providing a substrate;

[0049] An isolation conductive layer and a first dam are formed on one side of the substrate, wherein the isolation conductive layer includes an isolation structure and a blocking column, the isolation structure is located in the display area, and the blocking column and the first dam are both located in the non-display area.

[0050] In some possible implementations, the display panel further includes a second dam located at one side of the substrate, the second dam is located in the non-display area, the blocking column is located between the first dam and the second dam, and the blocking column is located at a side of the first dam away from the display area;

[0051] The step of forming an isolation conductive layer and a first dam on one side of the substrate comprises:

[0052] forming a first planarization layer on one side of the substrate, wherein the first planarization layer includes a second planarization portion located in the non-display area;

[0053] forming a conductive layer on a side of the first planarization layer away from the substrate, wherein the conductive layer includes a conductive portion located in the non-display area;

[0054] forming a second planarization layer on a side of the conductive layer away from the substrate, wherein the second planarization layer includes a first planarization portion and a third planarization portion located in the non-display area;

[0055] forming a pixel defining material layer on a side of the second planarization layer away from the substrate;

[0056] forming an isolation conductive material layer on a side of the pixel defining material layer away from the substrate;

[0057] The isolation conductive material is patterned to form an isolation structure and a blocking column, and the pixel defining material layer is patterned to form a pixel defining layer, a first pixel defining portion, and a second pixel defining portion; wherein the first planarization portion and the first pixel defining portion form at least a portion of the first dam, and the second planarization portion, the third planarization portion, the conductive portion, and the second pixel defining portion form at least a portion of the second dam.

[0058] In some possible implementations, the present application further provides an electronic device, which includes the display panel described in the present application, or includes a display panel prepared by the method for preparing the display panel described in the present application.

[0059] Compared with the prior art, this application has the following beneficial effects:

[0060] The present application provides a display panel, a method for preparing a display panel, and an electronic device. By forming a blocking column arranged in the same layer as the isolation structure in the non-display area, a better blocking effect can be achieved for the material of the second packaging layer. The material of the second packaging layer is not easy to overflow, and external water vapor is not easy to enter the display area, thereby improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0062] Figure 1 A schematic top view of a display panel in the related art provided by an embodiment of the present application;

[0063] Figure 2 Provided in the embodiments of this application Figure 1 Schematic cross-sectional view at AA in the middle;

[0064] Figure 3 This is one of the top view schematic diagrams of the display panel provided in the embodiment of the present application;

[0065] Figure 4 Provided in the embodiments of this application Figure 3 A schematic cross-sectional view of the middle BB;

[0066] Figure 5 A second schematic top view of a display panel provided in an embodiment of the present application;

[0067] Figure 6 Provided in the embodiments of this application Figure 5 Schematic cross-sectional view at CC in the middle;

[0068] Figure 7 A third schematic top view of a display panel provided in an embodiment of the present application;

[0069] Figure 8 Provided in the embodiments of this application Figure 7 One of the cross-sectional views at DD in the middle;

[0070] Fig. 9 Provided in the embodiments of this application Figure 7 The second cross-sectional view at DD in the middle;

[0071] Fig.10 Provided in the embodiments of this application Figure 7 The third cross-sectional view at DD in the middle;

[0072] Fig.11 A schematic diagram of a process for preparing a display panel provided in an embodiment of the present application;

[0073] Fig.12 A cross-sectional schematic diagram of forming a first planarization layer including a second planarization portion on one side of a substrate provided in an embodiment of the present application;

[0074] Fig.13 A cross-sectional view of a conductive layer including a conductive portion formed on a side of the first planarization layer away from the substrate provided in an embodiment of the present application;

[0075] Fig.14 A cross-sectional view of a second planarization layer including a first planarization portion and a third planarization portion formed on a side of the conductive layer away from the substrate provided in an embodiment of the present application;

[0076] Fig.15 A cross-sectional view of forming a pixel defining material layer on a side of the second planarization layer away from the substrate provided in an embodiment of the present application;

[0077] Fig.16 The cross-sectional intention of forming an isolation conductive material layer on a side of the pixel defining material layer away from the substrate provided in the embodiment of the present application;

[0078] Fig.17 A cross-sectional schematic diagram of patterning the isolation conductive material and the pixel defining material layer provided in an embodiment of the present application.

[0079] Figure numerals: 1. dam; 2. substrate; 3. third encapsulation layer; 4. first electrode; 5. light-emitting portion; 6. second electrode; 7. light-emitting unit; 8. isolation structure; 81. first isolation portion; 82. second isolation portion; 83. third isolation portion; 9. blocking column; 91. first blocking portion; 92. second blocking portion; 93. third blocking portion; 10. first dam; 11. first encapsulation layer; 111. encapsulation unit; 12. pixel defining layer; 121. first pixel defining portion; 122. second pixel defining portion; 13. second dam; 14. first planarization layer; 141. second planarization portion; 15. conductive layer; 151. conductive portion; 16. second planarization layer; 161. first planarization portion; 162. third planarization portion; 17. third encapsulation layer; 18. pixel defining material layer; 19. isolation conductive material layer. DETAILED DESCRIPTION

[0080] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0081] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0082] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0083] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They 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 position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0084] It should be noted that, in the absence of conflict, different features in the embodiments of the present application may be combined with each other.

[0085] Improving the density of light-emitting units in a display panel (i.e., pixel density) is an important way to improve the display effect. However, the display panels currently made using the fine metal evaporation mask (FMM) technology cannot further increase the density of light-emitting units due to technical limitations. The inventors have found through long-term research that in order to solve the technical problem that the density of light-emitting units cannot be further increased, an isolation structure is set in some display panels. When the light-emitting functional layer and the second electrode layer are evaporated in the entire layer, the light-emitting functional layer and the second electrode layer can be disconnected at the isolation structure. Through multiple evaporation and multiple etching processes (i.e., light-emitting unit patterning), light-emitting units of different colors can be formed in different isolation openings.

[0086] Among them, patent PCT / CN2023 / 134518, patent 202310759370.2, patent 202310740412.8, patent 202310707209.0, patent 202311499823.9, patent 202310692671.8, patent 202311091555.7 and patent 202311346196.5 record relevant technical solutions of isolation structure and encapsulation layer, and their contents are incorporated into this application by reference for reference.

[0087] See also Figure 1 and Figure 2 The display panel in the related art includes a display area AA and a non-display area AB surrounding at least part of the display area AA. The display panel includes a substrate 2, a dam 1 located on one side of the substrate 2, an isolation structure 8, a light-emitting unit 7 located in an isolation opening formed by the isolation structure 8, and a second encapsulation layer 3 located on a side of the light-emitting unit 7 away from the substrate. The material of the second encapsulation layer 3 can be formed by inkjet printing.

[0088] However, the material of the second encapsulation layer 3 easily goes over the dam 1 and overflows. Since the material of the second encapsulation layer 3 is an organic material, external water vapor easily enters the display area AA through the overflowing second encapsulation layer 3, thereby affecting the display effect of the display panel.

[0089] In order to solve the above-mentioned technical problems, the inventor innovatively designed the following technical solutions, and the specific implementation solutions of the present application will be described in detail below in conjunction with the accompanying drawings. It should be noted that the defects existing in the solutions in the above-mentioned prior art are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above-mentioned technical problems and the solutions proposed in this embodiment below for the above-mentioned problems should all be the contributions made by the inventor to the present application in the process of invention and creation, and should not be understood as the technical content known to those skilled in the art.

[0090] See also Figure 3-Figure 4 This embodiment provides a display panel, which includes a display area AA and a non-display area AB surrounding at least a portion of the display area AA. The display panel includes a substrate 2, an isolation conductive layer and a first dam 10.

[0091] The isolation conductive layer and the first dam 10 are located on one side of the substrate 2. The isolation conductive layer includes an isolation structure 8 and a barrier column 9. The isolation structure 8 is located in the display area AA. The barrier column 9 and the first dam 10 are both located in the non-display area AB.

[0092] The blocking column 9 can prevent the material of the second encapsulation layer 3 from flowing in a direction away from the display area AA. The material of the second encapsulation layer 3 is not easy to overflow to the edge of the non-display area AB of the display panel, and external water vapor is not easy to enter the display area AA of the display panel through the second encapsulation layer 3. Therefore, the light-emitting unit 7 of the display area AA is not easily affected by external water vapor, thereby improving the light-emitting effect of the light-emitting unit 7 of the display panel.

[0093] At the same time, the blocking column 9 can increase the transmission path of the cracks of the display panel, so the cracks of the display panel are not easy to spread to the display area AA, thereby improving the anti-crack performance of the display panel, and external water vapor is not easy to enter the display area AA through the cracks, thereby further improving the display effect of the display panel.

[0094] Based on the above design, this embodiment forms a blocking column 9 in the non-display area AB and is arranged on the same layer as the isolation structure 8, which can provide a better blocking effect on the material of the second encapsulation layer 3. The material of the second encapsulation layer 3 is not easy to overflow, and external water vapor is not easy to enter the display area AA, thereby improving the display effect of the display panel.

[0095] For some possible implementations, see again Figure 4 , the isolation structure 8 encloses an isolation opening, the display panel also includes a light-emitting unit 7 at least partially located in the isolation opening, the light-emitting unit 7 includes a first electrode 4, a light-emitting portion 5 and a second electrode 6 which are sequentially stacked in a direction away from the substrate 2, the isolation structure 8 includes a conductive material, and the second electrode 6 extends to be electrically connected to the isolation structure 8; the display panel also includes a pixel defining layer 12 located on a side of the first electrode 4 away from the substrate 2, and the isolation structure 8 is located on a side of the pixel defining layer 12 away from the substrate 2; the pixel defining layer 12 includes a pixel opening exposing at least a portion of the first electrode 4, and the orthographic projection of the pixel opening on the substrate 2 is located within the orthographic projection of the isolation opening on the substrate 2.

[0096] The setting of the isolation structure 8 enables the display panel to form film layers of light-emitting units 7 of different colors in different isolation openings without the need for a fine metal mask. Specifically, when forming a light-emitting functional layer, the light-emitting functional layer will be separated by the isolation structure 8 to form a plurality of light-emitting portions 5 arranged at intervals, and when forming a second electrode layer, the second electrode layer will be separated by the isolation structure 8 to form a plurality of second electrodes 6 arranged at intervals, the isolation structure 8 includes a conductive material, the second electrode 6 is electrically connected to the isolation structure 8, and a first electrode 4, a light-emitting portion 5 and a second electrode 6 form a light-emitting unit 7. Among them, the first electrode 4 can be an anode, and the second electrode 6 can be a cathode.

[0097] In this way, different light-emitting units 7 can be made independent of each other, thereby improving the crosstalk between adjacent light-emitting units 7 and improving the display effect of the display panel. At the same time, due to the presence of the isolation structure 8, the light-emitting functional layer and the second electrode layer in the light-emitting unit 7 of each color in the display panel can be first prepared on the entire surface and then patterned, thereby eliminating the need for a fine metal mask, thereby saving the manufacturing cost of the display panel.

[0098] For some possible implementations, see again Figure 4The display panel also includes a first packaging layer 11 located on a side of the second electrode layer away from the substrate 2. The first packaging layer 11 includes a plurality of packaging units 111 arranged at intervals. At least some of the packaging units 111 extend from the side of the isolation structure 8 to the side of the isolation structure 8 away from the substrate 2. The side of the isolation structure 8 is the surface of the isolation structure 8 facing the isolation opening. The packaging units 111 are arranged at intervals on the side of the isolation structure 8 away from the substrate 2. There is a gap between the packaging units 111 located on the side of the isolation structure 8 away from the substrate 2 and the side of the isolation structure 8 away from the substrate 2. The orthographic projection of the packaging unit 111 on the substrate 2 covers the orthographic projection of the isolation opening on the substrate 2 and covers part of the orthographic projection of the isolation structure 8 on the substrate 2.

[0099] During the patterning process of the light-emitting unit 7 , the first encapsulation layer 11 is disconnected at the isolation structure 8 to form the encapsulation unit 111 . The encapsulation unit 111 can completely and independently encapsulate the corresponding light-emitting unit 7 , thereby improving the display characteristics of the display panel.

[0100] Preferably, see again Figure 4 The display panel further includes a second encapsulation layer 3 located on a side of the first encapsulation layer 11 away from the substrate 2, and the material of the second encapsulation layer 3 includes an organic material. The second encapsulation layer 3 can be formed by inkjet printing (IJP). The second encapsulation layer 3 can provide a better encapsulation effect on the light-emitting unit 7, thereby further improving the encapsulation quality of the display panel.

[0101] For some possible implementations, see Figure 5 and Figure 6 The display panel further includes a second dam 13 located on one side of the substrate 2, and the barrier column 9 is located between the first dam 10 and the second dam 13. By providing the second dam 13 in the non-display area AB, the risk of material overflow of the second encapsulation layer 3 can be further reduced.

[0102] Preferably, see again Figure 5 and Figure 6 The blocking column 9 is located on the side of the first dam 10 away from the display area AA. When the material of the second encapsulation layer 3 overflows from the first dam 10 to the blocking column 9, the blocking column 9 can block the material of the second encapsulation layer 3, so that the material of the second encapsulation layer 3 is not easy to overflow from the blocking column 9 to the second dam 13.

[0103] If the material of the second encapsulation layer 3 overflows from the blocking pillars 9 to the second dams 13, the second dams 13 can further block the material of the second encapsulation layer 3. In this way, the overflow risk of the material of the second encapsulation layer 3 can be further reduced.

[0104] Preferably, see again Figure 5, the orthographic projection of the second dam 13 on the substrate 2 at least partially surrounds the orthographic projection of the display area AA on the substrate 2. In this way, the second dam 13 can block the material of the second encapsulation layer 3 from different directions, thereby further improving the blocking effect on the material of the second encapsulation layer 3.

[0105] Preferably, see again Figure 5 , the orthographic projection of the blocking column 9 on the substrate 2 at least partially surrounds the orthographic projection of the display area AA on the substrate 2. In this way, the blocking column 9 can block the material of the second encapsulation layer 3 from different directions, thereby further improving the blocking effect on the material of the second encapsulation layer 3.

[0106] Preferably, see again Figure 5 , the orthographic projection of the first dam 10 on the substrate 2 at least partially surrounds the orthographic projection of the display area AA on the substrate 2. In this way, the first dam 10 can block the material of the second encapsulation layer 3 from different directions, thereby further improving the blocking effect on the material of the second encapsulation layer 3.

[0107] For some possible implementations, see Figure 7 and Figure 8 There are multiple blocking columns 9 , and the material of the second encapsulation layer 3 is not easy to pass over the multiple blocking columns 9 at the same time. Therefore, the multiple blocking columns 9 can further reduce the overflow risk of the material of the second encapsulation layer 3 .

[0108] Preferably, the orthographic projection of the blocking column 9 on the substrate 2 surrounds the orthographic projection of the display area AA on the substrate 2. In this way, the blocking column 9 can block the material of the second encapsulation layer 3 from all directions, so that the material of the second encapsulation layer 3 is not easy to overflow.

[0109] For some possible implementations, see Fig. 9 The blocking column 9 and the isolation structure 8 are arranged in the same layer, and the blocking column 9 and the isolation structure 8 are made of the same material.

[0110] The isolation conductive layer is patterned into the isolation structure 8 in the display area AA and patterned into the blocking column 9 in the non-display area AB, thereby eliminating the need to set up a special process for forming the blocking column 9 and reducing the cost of forming the blocking column 9 .

[0111] Preferably, see again Fig. 9 The blocking column 9 includes a first blocking portion 91 and a second blocking portion 92 which are stacked in sequence in a direction away from the substrate 2 , and the orthographic projection of the side of the first blocking portion 91 away from the substrate 2 on the substrate 2 is located within the orthographic projection of the second blocking portion 92 on the substrate 2 .

[0112] The isolation structure 8 includes a first isolation portion 81 and a second isolation portion 82 which are stacked in sequence in a direction away from the substrate 2 . The orthographic projection of the side of the first isolation portion 81 away from the substrate 2 on the substrate 2 is located within the orthographic projection of the second isolation portion 82 on the substrate 2 .

[0113] The first blocking portion 91 is in the same layer and made of the same material as the first isolating portion 81, and the second blocking portion 92 is in the same layer and made of the same material as the second isolating portion 82. Since the second isolating portion 82 is located on the side of the first isolating portion 81 away from the substrate, and the lateral width of the second isolating portion 82 is greater than the lateral width of the first isolating portion 81, the second isolating portion 82 causes the light-emitting functional layer to be disconnected at the isolation structure 8 to form the light-emitting portion 5, and causes the second electrode layer to be disconnected at the isolation structure 8 to form the second electrode 6. In this way, the isolation structure 8 formed by the first isolating portion 81 and the second isolating portion 82 can make it easier to independently package each light-emitting unit 7, thereby improving the packaging yield of the display panel.

[0114] The second electrode 6 is electrically connected to the first isolation portion 81 . The first isolation portion 81 includes a conductive material. The second electrode 6 corresponding to the light-emitting unit 7 extends to contact the side wall of the first isolation portion 81 to achieve electrical connection between the second electrode 6 corresponding to the light-emitting unit 7 and the first isolation portion 81 .

[0115] Preferably, see Fig.10 The blocking column 9 further includes a third blocking portion 93 located on a side of the first blocking portion 91 facing the substrate 2 , and the isolation structure 8 further includes a third isolation portion 83 located on a side of the first isolation portion 81 facing the substrate 2 .

[0116] The third blocking portion 91 is in the same layer and made of the same material as the third isolation portion 83 , the second electrode 6 is electrically connected to the third isolation portion 83 , the third isolation portion 83 includes a conductive material, and the second electrode 6 corresponding to the light-emitting unit 7 extends to contact the side wall of the third isolation portion 83 to achieve electrical connection between the second electrode 6 corresponding to the light-emitting unit 7 and the third isolation portion 83 .

[0117] Specifically, the first barrier 91 includes a conductive material; and / or the second barrier 92 includes a conductive material; and / or the third barrier 93 includes a conductive material. More specifically, the material of the third barrier 93 includes molybdenum metal; and / or the material of the first barrier 91 includes aluminum metal; and / or the material of the second barrier 92 includes titanium metal; the material of the third isolation part 83 includes molybdenum metal; and / or the material of the first isolation part 81 includes aluminum metal; and / or the material of the second isolation part 82 includes titanium metal. In this way, when the isolation structure 8 separates the second electrode layer into the second electrode 6, the second electrode 6 is more easily electrically connected to the first isolation part 81 and / or the third isolation part 83.

[0118] The orthographic projection of the light emitting portion 5 on the substrate 2 is outside the orthographic projection of the third isolation portion 83 and / or the first isolation portion 81 on the substrate 2. In this way, the light emitting portion 5 does not overlap the isolation structure 8, thereby effectively improving the crosstalk problem between the light emitting units 7.

[0119] For some possible implementations, see again Fig. 9 or Fig.10 The display panel further includes a first planarization layer 14 located on one side of the substrate 2 , the first planarization layer 14 includes a second planarization portion 141 , and the second dam 13 includes the second planarization portion 141 .

[0120] The second planarization portion 141 is formed as a part of the second bank 13 at the same time as the first planarization layer 14 is formed. In this way, the cost of forming the second bank 13 can be reduced.

[0121] Preferably, the display panel further comprises a conductive layer 15 located on a side of the first planarization layer 14 away from the substrate 2 , the conductive layer 15 comprises a conductive portion 151 , and the second dam 13 comprises at least a portion of the conductive portion 151 .

[0122] The conductive layer 15 in this embodiment may be the fourth conductive layer of the display panel. The conductive portion 151 is formed as a part of the second dam 13 while the conductive layer 15 is formed. Thus, the cost of forming the second dam 13 can be reduced.

[0123] The display panel further includes a second planarization layer 16 located on one side of the substrate 2, the second planarization layer 16 includes a first planarization portion 161 and a third planarization portion 162, the first bank 10 includes the first planarization portion 161, and the second bank 13 includes the third planarization portion 162. When the second planarization layer 16 is formed, the first planarization portion 161 is formed as a part of the first bank 10, and the third planarization portion 162 is formed as a part of the second bank 13, so that the cost of forming the first bank 10 and the second bank 13 can be reduced.

[0124] Preferably, the display panel further comprises a pixel defining layer 12 located on a side of the second planarization layer 16 away from the substrate 2, the pixel defining layer 12 comprises a first pixel defining portion 121 and a second pixel defining portion 122, the first bank 10 comprises at least a portion of the first pixel defining portion 121, and the second bank 13 comprises at least a portion of the second pixel defining portion 122. When the pixel defining layer 12 is formed, the first pixel defining portion 121 is formed as a portion of the first bank 10 and the second pixel defining portion 122 is formed as a portion of the second bank 13, so that the cost of forming the first bank 10 and the second bank 13 can be reduced.

[0125] For some possible implementations, see again Fig.10The display panel further includes a third encapsulation layer 17 located on a side of the second encapsulation layer 3 away from the substrate 2 , and the materials of the first encapsulation layer 11 and the third encapsulation layer 17 both include inorganic materials.

[0126] The first encapsulation layer 11 and the third encapsulation layer 17 may be formed by chemical vapor deposition (CVD). The third encapsulation layer 17 may provide a better encapsulation effect on the light emitting unit 7, thereby further improving the encapsulation quality of the display panel.

[0127] Preferably, see again Fig.10 , the third encapsulation layer 17 extends from the display area AA to the non-display area AB, the third encapsulation layer 17 covers the barrier column 9, and the third encapsulation layer 17 covers the second dam 13. In this way, the third encapsulation layer 17 can better encapsulate the barrier column 9 and the second dam 13, so that it is less likely for external water vapor to enter the display area AA of the display panel.

[0128] Preferably, see again Fig.10 , the second encapsulation layer 3 is located on the side of the barrier column 9 close to the display area AA. The second encapsulation layer 3 is not easy to cross the barrier column 9, so it is not easy for external water vapor to be transferred to the display area AA through the second encapsulation layer 3, and the cracks in the non-display area AB are not easy to spread to the display area AA, thereby improving the display performance of the display panel.

[0129] For some possible implementations, see Fig.11 The present application also provides a method for preparing a display panel, the display panel comprising a display area AA and a non-display area AB surrounding at least a portion of the display area AA, the method comprising:

[0130] S10: providing a substrate 2.

[0131] S11: forming an isolation conductive layer and a first dam 10 on one side of the substrate 2, wherein the isolation conductive layer comprises an isolation structure 8 and a blocking column 9, wherein the isolation structure 8 is located in the display area AA, and the blocking column 9 and the first dam 10 are both located in the non-display area AB.

[0132] The blocking column 9 of the display panel obtained by the above method can prevent the material of the second encapsulation layer 3 from flowing in the direction away from the display area AA. The material of the second encapsulation layer 3 is not easy to overflow to the edge of the non-display area AB of the display panel, and the external water vapor is not easy to enter the display area AA of the display panel through the second encapsulation layer 3. Therefore, the light-emitting unit 7 of the display area AA is not easily affected by external water vapor, thereby improving the light-emitting effect of the light-emitting unit 7 of the display panel.

[0133] At the same time, the blocking column 9 can increase the transmission path of the cracks of the display panel, so the cracks of the display panel are not easy to spread to the display area AA, thereby improving the anti-crack performance of the display panel, and external water vapor is not easy to enter the display area AA through the cracks, thereby further improving the display effect of the display panel.

[0134] In some possible implementations, the display panel further includes a second dam 13 located on one side of the substrate 2, the barrier column 9 is located between the first dam 10 and the second dam 13, and the barrier column 9 is located on a side of the first dam 10 away from the display area AA; the step of forming the isolation conductive layer and the first dam 10 on one side of the substrate 2 includes:

[0135] See also Fig.12 A first planarization layer 14 is formed on one side of the substrate 2 , and the first planarization layer 14 includes a second planarization portion 141 located in the non-display area AB.

[0136] See also Fig.13 A conductive layer 15 is formed on a side of the first planarization layer 14 away from the substrate 2 , and the conductive layer 15 includes a conductive portion 151 located in the non-display area AB.

[0137] See also Fig.14 A second planarization layer 16 is formed on a side of the conductive layer 15 away from the substrate 2 , and the second planarization layer 16 includes a first planarization portion 161 and a third planarization portion 162 located in the non-display area AB.

[0138] See also Fig.15 A pixel defining material layer 18 is formed on a side of the second planarization layer 16 away from the substrate 2 .

[0139] See also Fig.16 , an isolation conductive material layer 19 is formed on a side of the pixel defining material layer 18 away from the substrate 2 .

[0140] See also Fig.17 , the isolation conductive material is patterned to form an isolation structure 8 and a blocking column 9, and the pixel defining material layer 18 is patterned to form a pixel defining layer 12, a first pixel defining portion 121 and a second pixel defining portion 122; wherein the first planarizing portion 161 and the first pixel defining portion 121 form at least a portion of the first dam 10, and the second planarizing portion 141, the third planarizing portion 162, the conductive portion 151 and the second pixel defining portion 122 form at least a portion of the second dam 13.

[0141] Through the above method, the first planarization portion 161 is formed as a part of the first dam 10 when the first planarization layer 14 is formed, and the second planarization portion 141 is formed as a part of the second dam 13, and the conductive portion 151 is formed as a part of the second dam 13 when the conductive layer 15 is formed.

[0142] When the second planarization layer 16 is formed, the third planarization portion 162 is formed as a part of the second dam 13 , and when the pixel defining layer 12 is formed, the first pixel defining portion 121 is formed as a part of the first dam 10 , and the second pixel defining portion 122 is formed as a part of the second dam 13 .

[0143] While the isolation conductive layer is patterned to obtain the isolation structure 8 located in the display area AA, the blocking pillar 9 located in the non-display area AB is obtained.

[0144] In this way, the cost of forming the first dam 10, the second dam 13 and the barrier column 9 can be reduced through the above method, thereby reducing the cost of manufacturing the display panel.

[0145] In some possible implementations, the present application further provides an electronic device, the electronic device comprising the display panel of the present application, or comprising a display panel prepared by the method for preparing a display panel of the present application. The electronic device may include a device with image processing capabilities, such as a server, a personal computer, a laptop computer, etc. Since the electronic device includes the display panel of the present application, the electronic device is not prone to the problem of material overflow of the second encapsulation layer, thereby improving the display quality of the electronic device.

[0146] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0147] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a non-display area surrounding at least a portion of the display area, and the display panel includes: substrate; An isolation conductive layer and a first dam are located on one side of the substrate, wherein the isolation conductive layer comprises an isolation structure and a blocking column, the isolation structure is located in the display area, and the blocking column and the first dam are both located in the non-display area.

2. The display panel according to claim 1, characterized in that: The display panel further comprises a second dam located at one side of the substrate, the second dam is located in the non-display area, and the barrier column is located between the first dam and the second dam; Preferably, the blocking column is located on a side of the first dam away from the display area; Preferably, the orthographic projection of the second dam on the substrate at least partially surrounds the orthographic projection of the display area on the substrate.

3. The display panel according to claim 1 or 2, characterized in that: The orthographic projection of the barrier pillar on the substrate at least partially surrounds the orthographic projection of the display area on the substrate; Preferably, the orthographic projection of the first dam on the substrate at least partially surrounds the orthographic projection of the display area on the substrate.

4. The display panel according to claim 1 or 2, characterized in that: The number of the blocking columns is multiple; Preferably, an orthographic projection of the barrier pillar on the substrate surrounds an orthographic projection of the display area on the substrate.

5. The display panel according to claim 1 or 2, characterized in that: The blocking column and the isolation structure are arranged in the same layer; Preferably, the blocking column and the isolation structure are made of the same material.

6. The display panel according to claim 5, characterized in that: The blocking column comprises a first blocking portion and a second blocking portion which are sequentially stacked in a direction away from the substrate, wherein the orthographic projection of a side of the first blocking portion away from the substrate on the substrate is located within the orthographic projection of the second blocking portion on the substrate; Preferably, the blocking column further comprises a third blocking portion located on a side of the first blocking portion facing the substrate; Preferably, the first blocking portion comprises a conductive material; and / or the second blocking portion comprises a conductive material; and / or the third blocking portion comprises a conductive material; Preferably, the material of the third blocking part includes molybdenum metal; and / or the material of the first blocking part includes aluminum metal; and / or the material of the second blocking part includes titanium metal.

7. The display panel according to claim 1, characterized in that: The display panel further includes a second planarization layer located on one side of the substrate, the second planarization layer includes a first planarization portion, and the first dam includes the first planarization portion.

8. The display panel according to claim 7, characterized in that: The display panel further includes a pixel defining layer located on a side of the second planarization layer away from the substrate, the pixel defining layer includes a first pixel defining portion, and the first dam includes at least a portion of the first pixel defining portion.

9. The display panel according to claim 2, characterized in that: The display panel further includes a first planarization layer located on one side of the substrate, the first planarization layer includes a second planarization portion, and the second dam includes the second planarization portion; Preferably, the display panel further comprises a conductive layer located on a side of the first planarization layer away from the substrate, the conductive layer comprises a conductive portion, and the second dam comprises at least a portion of the conductive portion; Preferably, the display panel further comprises a second planarization layer located on a side of the conductive layer away from the substrate, the second planarization layer comprises a third planarization portion, and the second dam comprises the third planarization portion; Preferably, the display panel further comprises a pixel defining layer located on a side of the second planarization layer away from the substrate, the pixel defining layer comprises a second pixel defining portion, and the second dam comprises at least a portion of the second pixel defining portion.

10. The display panel according to claim 2, characterized in that: The isolation structure encloses to form an isolation opening, and the display panel further comprises a light emitting unit at least partially located in the isolation opening; Preferably, the light emitting unit comprises a first electrode, a light emitting portion and a second electrode which are sequentially stacked in a direction away from the substrate.

11. The display panel according to claim 10, characterized in that: The isolation structure includes a conductive material, and the second electrode extends to be electrically connected to the isolation structure; Preferably, the first electrode comprises an anode, and / or the second electrode comprises a cathode.

12. The display panel according to claim 10, characterized in that: The isolation structure includes a first isolation portion and a second isolation portion which are stacked in sequence in a direction away from the substrate, wherein the orthographic projection of a side of the first isolation portion away from the substrate on the substrate is located within the orthographic projection of the second isolation portion on the substrate.

13. The display panel according to claim 12, characterized in that: The second electrode is electrically connected to the first isolation portion; and / or the isolation structure further includes a third isolation portion located on a side of the first isolation portion facing the substrate, and the second electrode is electrically connected to the third isolation portion; Preferably, the orthographic projection of the light-emitting portion on the substrate is located outside the orthographic projection of the third isolation portion and / or the first isolation portion on the substrate; Preferably, the material of the third isolation portion includes molybdenum metal; and / or the material of the first isolation portion includes aluminum metal; and / or the material of the second isolation portion includes titanium metal.

14. The display panel according to claim 10, characterized in that: The display panel further comprises a pixel defining layer located on a side of the first electrode away from the substrate, and the isolation structure is located on a side of the pixel defining layer away from the substrate; the pixel defining layer comprises a pixel opening exposing at least a portion of the first electrode; Preferably, an orthographic projection of the pixel opening on the substrate is located within an orthographic projection of the isolation opening on the substrate.

15. The display panel according to claim 14, characterized in that: The display panel also includes a first encapsulation layer located on the side of the second electrode layer away from the substrate, the first encapsulation layer includes a plurality of encapsulation units arranged at intervals, at least some of the encapsulation units extend from the side of the isolation structure to the side of the isolation structure away from the substrate, and the side of the isolation structure is the surface of the isolation structure facing the isolation opening.

16. The display panel according to claim 15, characterized in that: The encapsulation unit is arranged at intervals on a side of the isolation structure away from the substrate; Preferably, there is a gap between the packaging unit located on a side of the isolation structure away from the substrate and a side of the isolation structure away from the substrate; Preferably, the orthographic projection of the encapsulation unit on the substrate covers the orthographic projection of the isolation opening on the substrate and covers a portion of the orthographic projection of the isolation structure on the substrate.

17. The display panel according to claim 15, characterized in that: The display panel further comprises a second encapsulation layer located on a side of the first encapsulation layer away from the substrate and a third encapsulation layer located on a side of the second encapsulation layer away from the substrate; Preferably, the materials of the first encapsulation layer and the third encapsulation layer both include inorganic materials; Preferably, the material of the second encapsulation layer includes an organic material; Preferably, the third encapsulation layer extends from the display area to the non-display area; Preferably, the third encapsulation layer covers the blocking pillar; Preferably, the third encapsulation layer covers the second dam; Preferably, the second encapsulation layer is located on a side of the barrier column close to the display area.

18. A method for preparing a display panel, characterized in that: The display panel includes a display area and a non-display area surrounding at least a portion of the display area, and the method includes: providing a substrate; An isolation conductive layer and a first dam are formed on one side of the substrate, wherein the isolation conductive layer includes an isolation structure and a blocking column, the isolation structure is located in the display area, and the blocking column and the first dam are both located in the non-display area.

19. The method for preparing a display panel according to claim 18, characterized in that: The display panel further comprises a second dam located at one side of the substrate, the second dam is located at the non-display area, the barrier column is located between the first dam and the second dam, and the barrier column is located at a side of the first dam away from the display area; The step of forming an isolation conductive layer and a first dam on one side of the substrate comprises: forming a first planarization layer on one side of the substrate, wherein the first planarization layer includes a second planarization portion located in the non-display area; forming a conductive layer on a side of the first planarization layer away from the substrate, the conductive layer comprising a conductive portion located in the non-display area; forming a second planarization layer on a side of the conductive layer away from the substrate, wherein the second planarization layer includes a first planarization portion and a third planarization portion located in the non-display area; forming a pixel defining material layer on a side of the second planarization layer away from the substrate; forming an isolation conductive material layer on a side of the pixel defining material layer away from the substrate; The isolation conductive material is patterned to form an isolation structure and a blocking column, and the pixel defining material layer is patterned to form a pixel defining layer, a first pixel defining portion, and a second pixel defining portion; wherein the first planarization portion and the first pixel defining portion form at least a portion of the first dam, and the second planarization portion, the third planarization portion, the conductive portion, and the second pixel defining portion form at least a portion of the second dam.

20. An electronic device, characterized in that: The electronic device comprises the display panel according to any one of claims 1 to 17, or comprises a display panel prepared by the method for preparing a display panel according to claim 18 or 19.

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