Display panel and electronic device

Abstract

The present application provides a display panel and an electronic device. The display panel comprises: a substrate; an inorganic layer, located on one side of the substrate, wherein, in the thickness direction of the substrate, the inorganic layer is provided with a first opening passing through the inorganic layer; and an isolation structure, located on the side of the inorganic layer away from the substrate, wherein the isolation structure encloses an isolation opening, and the orthographic projection of the first opening on the substrate is at least partially located within the orthographic projection of the isolation structure on the substrate.

Description

Display panel and electronic device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411366447.0, filed on September 27, 2024, entitled “Display panel and display device”, Chinese Patent Application No. 202510318449.0, filed on March 17, 2025, entitled “Display panel, preparation method of display panel and electronic device”, Chinese Patent Application No. 202510112923.4, filed on January 22, 2025, entitled “Display panel, preparation method of display panel and electronic device”, Chinese Patent Application No. 202510112902.2, filed on January 22, 2025, entitled “Display panel, preparation method of display panel and electronic device”, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of display, in particular, to a display panel and an electronic device. BACKGROUND

[0004] Organic Light Emitting Diode (OLED) and flat display devices based on Light Emitting Diode (LED) technology have been widely used in mobile phones, televisions, notebook computers, desktop computers and other consumer electronic products due to their high image quality, power saving, thin body and wide application range. They have become the mainstream of display panels. In the preparation process of traditional display panels, fine metal mask (FMM) is usually used to realize the patterning of light-emitting pixels. FMM technology is mature and has rich mass production experience. However, FMM technology also has the problems of limited precision, high development cost and long development cycle. The fine metal mask-free technology eliminates the limitations of traditional OLED process on display screen size, resolution and other screen performance, and has the advantages of high performance, full size and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A and CN118660589A disclose the related content of fine metal mask-free technology, which are referred to.

[0005] However, there are still some problems in display panels that need to be solved. SUMMARY

[0006] To overcome the technical problems mentioned in the technical background, the display panel provided in the embodiments of the present application comprises: a substrate; an inorganic layer located on one side of the substrate, along the thickness direction of the substrate, the inorganic layer being provided with a first opening hole penetrating through the inorganic layer; an isolation structure located on the side of the inorganic layer away from the substrate, the isolation structure being enclosed to form an isolation opening; and a projection of the first opening hole on the substrate is at least partially located within a projection of the isolation structure on the substrate.

[0007] In some possible implementation manners, the present application further provides a display panel, which comprises: a substrate; an inorganic layer located on one side of the substrate, along the thickness direction of the substrate, the inorganic layer being provided with a first opening hole penetrating through the inorganic layer; a pixel definition layer located on the side of the inorganic layer away from the substrate, the pixel definition layer being enclosed to form a plurality of pixel opening holes; and a projection of the first via hole on the substrate and a projection of the pixel opening hole on the substrate are staggered.

[0008] In some possible implementation manners, the present application further provides an electronic device comprising the display panel described in the present application.

[0009] Compared with the prior art, the present application has the following beneficial effects:

[0010] The display panel and the electronic device provided in the present application can improve the pixel aperture ratio of the display panel by arranging the projection of the first opening hole on the substrate within the projection of the isolation structure on the substrate, thereby improving the display effect of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0012] FIG. 1 is a partial top view of a display panel provided in the embodiments of the present application;

[0013] FIG. 2 is a cross-sectional view of A-A in FIG. 1 provided in the embodiments of the present application;

[0014] FIG. 3 is a cross-sectional view of A-A in FIG. 1 provided in the embodiments of the present application;

[0015] FIG. 4 is a partial top view of a display panel provided in the embodiments of the present application;

[0016] FIG. 5 is a cross-sectional view of the display panel along line B-B of FIG. 4 according to an embodiment of the present application;

[0017] FIG. 6 is a partial top view of the display panel according to an embodiment of the present application;

[0018] FIG. 7 is a partial top view of the display panel according to an embodiment of the present application;

[0019] FIG. 8 is a cross-sectional view of the display panel along line D-D of FIG. 7 according to an embodiment of the present application;

[0020] FIG. 9 is a partial top view of the display panel according to an embodiment of the present application;

[0021] FIG. 10 is a top view of the display panel according to an embodiment of the present application;

[0022] FIG. 11 is a cross-sectional view of the display panel along line C-C of FIG. 10 according to an embodiment of the present application;

[0023] FIG. 12 is a cross-sectional view of the display panel along line C-C of FIG. 10 according to an embodiment of the present application;

[0024] FIG. 13 is a partial top view of the display panel according to an embodiment of the present application;

[0025] FIG. 14 is a cross-sectional view of the display panel along line E-E of FIG. 13 according to an embodiment of the present application;

[0026] FIG. 15 is a top view of an inorganic layer of the display panel according to an embodiment of the present application;

[0027] FIG. 16 is a top view of an inorganic layer of the display panel according to an embodiment of the present application;

[0028] FIG. 17 is a top view of an inorganic layer of the display panel according to an embodiment of the present application;

[0029] FIG. 18 is a cross-sectional view of the display panel along line A-A of FIG. 1 according to an embodiment of the present application;

[0030] FIG. 19 is a cross-sectional view of the display panel along line A-A of FIG. 1 according to an embodiment of the present application;

[0031] FIG. 20 is a partial top view of the display panel according to an embodiment of the present application;

[0032] FIG. 21 is a cross-sectional view of the display panel including a packaging unit according to an embodiment of the present application;

[0033] FIG. 22 is a cross-sectional view of the display panel including a packaging unit according to an embodiment of the present application;

[0034] FIG. 23 is a cross-sectional view of a display panel including a second encapsulation layer and a third encapsulation layer according to an embodiment of the present disclosure;

[0035] FIG. 24 is a cross-sectional view of a display panel including a second encapsulation layer and a third encapsulation layer according to an embodiment of the present disclosure;

[0036] FIG. 25 is a partial top view of a display panel according to an embodiment of the present disclosure;

[0037] FIG. 26 is a cross-sectional view of C-C in FIG. 12 according to an embodiment of the present disclosure.

[0038] FIG. 26 is a cross-sectional view of C-C in FIG. 12 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0041] It should be noted that similar reference numerals and letters refer to like items throughout the accompanying drawings, and once an item is defined in one drawing, it is not necessary to further define and explain it in the subsequent drawings.

[0042] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed during use, 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0043] It should be noted that the different features in the embodiments of the present application can be combined with each other without conflict.

[0044] Increasing the density of light emitting units (i.e. pixel density) in a display panel is an important way to improve display effect, but the display panel made by the Fine Metal Mask (FMM) technology cannot further increase the density of light emitting units due to technical limitations. After long-term research by the inventors, it was found that in order to solve the technical problem that the density of light emitting units cannot be further increased, an isolation structure is provided in some display panels, so that the light emitting functional layer and the second electrode are disconnected at the isolation structure when the light emitting functional layer and the second electrode are deposited in an entire layer. Through multiple deposition and multiple etching processes (i.e. light emitting unit patterning), different colors of light emitting units can be formed in different isolation openings.

[0045] The display panel in the related art includes a substrate, an insulating layer located on one side of the substrate, and a light emitting unit located on the side of the insulating layer away from the substrate. The material of the insulating layer includes an organic material. Water vapor is easily transmitted in the organic material, so the water vapor in the insulating layer is easily transmitted to the light emitting unit, causing the light emitting unit to fail and produce dark spots, ultimately affecting the display effect of the display panel.

[0046] In order to solve the above-mentioned technical problems, the inventors have innovatively designed the following technical solutions, and the specific implementation schemes of the present application will be described in detail below. It should be noted that the defects of the above prior art solutions are the result of the inventors' practice and careful research, therefore, the discovery process of the above technical problems and the solutions proposed by the present embodiment to solve the above problems should be the contribution of the inventors to the present application during the invention and creation process, and should not be understood as technical content known to those skilled in the art.

[0047] Referring to FIG. 1 and FIG. 2, the display panel provided in the embodiment includes a substrate 1, an inorganic layer 6 and an isolation structure 4. The inorganic layer 6 is located on one side of the substrate 1 along the thickness direction of the substrate 1, and the inorganic layer 6 is provided with a first opening hole 61 penetrating through the inorganic layer 6; the isolation structure 4 is located on the side of the inorganic layer 6 away from the substrate 1, and the isolation structure 4 encloses to form an isolation opening 11; the orthographic projection of the first opening hole 61 on the substrate 1 is at least partially located in the orthographic projection of the isolation structure 4 on the substrate 1.

[0048] The display panel provided in the present application can improve the pixel aperture ratio of the display panel by setting the orthographic projection of the first opening hole 61 on the substrate 1 in the orthographic projection of the isolation structure 4 on the substrate 1, thereby improving the display effect of the display panel.

[0049] In some optional embodiments, as shown in FIG. 1 and FIG. 2, the display panel further includes a driving circuit layer 2, an insulating layer 5 and a light emitting unit 10. The driving circuit layer 2 is located on the substrate 1, the insulating layer 5 is located on the side of the driving circuit layer 2 away from the substrate 1, and the insulating layer 5 is provided with a first via hole 51 penetrating through the insulating layer 5 along the thickness direction Z of the substrate 1.

[0050] The inorganic layer 6 is located on the side of the insulating layer 5 away from the substrate 1, and the orthographic projection of the inorganic layer 6 on the substrate 1 at least partially overlaps with the orthographic projection of the insulating layer 5 on the substrate 1 along the thickness direction Z of the substrate 1. The inorganic layer 6 is provided with a first opening hole 61 penetrating through the inorganic layer 6.

[0051] At least part of the light emitting unit 10 is located in the isolation opening 11, and the light emitting unit 10 includes a first electrode 7, which is electrically connected with the driving circuit layer 2 through the first via hole 51.

[0052] The inorganic layer 6 has the function of blocking water vapor. In the present embodiment, the inorganic layer 6 is arranged between the light emitting unit 10 and the insulating layer 5. On the one hand, the inorganic layer 6 can block the water vapor in the external environment from entering the insulating layer 5, and on the other hand, the inorganic layer 6 can block the water vapor in the insulating layer 5 from invading the light emitting material layer of the light emitting unit 10, thereby reducing the risk of dark spots in the light emitting unit 10 caused by water vapor in the insulating layer 5, and further improving the display effect of the display panel.

[0053] If the inorganic layer 6 completely covers the insulating layer 5, the water vapor in the insulating layer 5 cannot be discharged in the subsequent preparation process of the display panel. When the water vapor in the insulating layer 5 reaches a certain amount, it is easy to make the inorganic layer 6 crack, thereby affecting the stability of the inorganic layer 6 and ultimately affecting the effect of the inorganic layer 6 on blocking the water vapor in the insulating layer 5 from invading the light emitting unit 10.

[0054] In the embodiment, the first opening 61 is arranged on the barrier layer 6, so that the moisture in the insulating layer 5 can be discharged in time during the subsequent preparation of the display panel, so that the inorganic layer 6 is not easy to collapse. Since the orthographic projection of the first opening 61 on the substrate 1 is located in the orthographic projection of the isolation structure 4 on the substrate 1, the gas discharged from the first opening 61 is not easy to invade the light emitting unit 10, so that the light emitting unit 10 is not easy to produce dark spots.

[0055] Optionally, the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is located in the orthographic projection of the isolation structure 4 between adjacent light emitting units 10 on the substrate 1. In some possible embodiments, as shown in FIGS. 4 and 5, the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is located in the orthographic projection of the side of the isolation structure 4 facing the substrate 1 on the substrate 1.

[0056] In this way, the first opening 61 is not easy to affect the flatness of the side of the isolation structure 4 facing the isolation opening 11, so that the second electrode 9 can better lap the side wall of the isolation structure 4, and finally the display effect of the display panel can be further improved.

[0057] Optionally, as shown in FIG. 5, the edge of the orthographic projection of the side of the first opening 61 away from the substrate 1 on the substrate 1 and the edge of the orthographic projection of the side of the side wall of the isolation structure 4 facing the isolation opening 11 close to the substrate 1 on the substrate 1 are spaced apart by a minimum distance D4 greater than 0 and less than or equal to 10 μm, such as 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm, etc. Reasonably setting the distance D4 can further prevent the first opening 61 from affecting the flatness of the side of the isolation structure 4 facing the isolation opening 11, so that the lapping effect of the second electrode 9 and the side wall of the isolation structure 4 can be further improved.

[0058] In the embodiment, the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is arranged in the orthographic projection of the isolation structure 4 between adjacent light emitting units 10 on the substrate 1, so that the influence of the first opening 61 on the area of the isolation opening 11 can be reduced, so that the light emitting area of the light emitting unit 10 can be improved, and the pixel aperture ratio of the display panel can be improved, and finally the display effect of the display panel can be improved.

[0059] Based on the above design, by arranging the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 in the orthographic projection of the isolation structure 4 between adjacent light emitting units 10 on the substrate 1, the pixel aperture ratio of the display panel can be improved, so that the display effect of the display panel can be improved.

[0060] In some possible implementation, referring to FIG. 1 and FIG. 2 again, the light emitting unit 10 further comprises the light emitting part 8 and the second electrode 9 which are sequentially stacked on the side of the first electrode 7 away from the substrate 1 in the direction Z away from the substrate 1.

[0061] For example, the display panel further comprises a pixel defining layer 3 between the inorganic layer 6 and the isolation structure 4, the pixel defining layer 3 comprises a pixel opening 31 which is in communication with the isolation opening 11, and the pixel opening 31 exposes part of the first electrode 7. For example, the pixel defining layer 3 comprises an inorganic insulating material. For example, the inorganic layer 6 is in contact with the first electrode 7.

[0062] The isolation structure 4 can be configured to form the film layers of the light emitting units 10 of different colors in different isolation openings 11 without the need of a fine mask plate. When the light emitting material layer is formed, the light emitting material layer is cut off by the isolation structure 4 to form a plurality of light emitting parts 8 arranged at intervals. When the second electrode 9 material layer is formed, the second electrode 9 material layer is cut off by the isolation structure 4 to form a plurality of second electrodes 9 arranged at intervals. The isolation structure 4 comprises a conductive material, the second electrode 9 is electrically connected with the isolation structure 4, and one first electrode 7, one light emitting part 8 and one second electrode 9 form one light emitting unit 10. The first electrode 7 can be an anode, and the second electrode 9 can be a cathode.

[0063] In this way, the different light emitting units 10 can be independent of each other, so that the crosstalk between adjacent light emitting units 10 can be improved, and the display effect of the display panel can be improved. Meanwhile, due to the presence of the isolation structure 4, the light emitting material layer and the second electrode 9 material layer in the light emitting unit 10 of each color in the display panel can be prepared in a whole plane and then patterned, so that the fine mask plate can be cancelled, and the preparation cost of the display panel can be saved.

[0064] Optionally, the orthographic projection of the first opening 61 on the substrate 1 is misaligned with the orthographic projection of the pixel opening 31 on the substrate 1. That is, the first opening 61 does not extend to the position of the pixel opening 31, and the first opening 61 and the pixel opening 31 are misaligned, which can improve the influence of the first opening 61 on the light emitting effect.

[0065] Optionally, the orthographic projection of the first via 51 on the substrate 1 is located within the orthographic projection of the first electrode 7 on the substrate 1. More of the first electrode 7 can extend into the first via 51, so that the first electrode 7 can be electrically connected with the driving circuit layer 2 through the first via 51, and the connection yield of the first electrode 7 and the driving circuit layer 2 can be improved.

[0066] In some possible implementation, referring to FIG. 1 and FIG. 2, the first via 51 is in communication with the first opening 61, and the first electrode 7 is electrically connected with the driving circuit layer 2 through the first opening 61 and the first via 51.

[0067] Optionally, the orthographic projection of the first via hole 51 on the substrate 1 is located within the orthographic projection of the first opening hole 61 on the substrate 1.

[0068] Optionally, the area of the orthographic projection of the first via hole 51 on the substrate 1 is smaller than the area of the orthographic projection of the first opening hole 61 on the substrate 1.

[0069] In the embodiment, the first via hole 51 and the first opening hole 61 are a sleeve hole, and the first electrode 7 can be electrically connected with the driving circuit layer 2 through the first opening hole 61, and the water vapor in the insulating layer 5 can be discharged in time. In addition, only one first opening hole 61 which is in communication with the first via hole 51 needs to be arranged on the inorganic layer 6, and no other via hole needs to be arranged, so that the structure of the inorganic layer 6 can be simplified, and the preparation and molding of the inorganic layer 6 are facilitated.

[0070] In some possible embodiments, referring to FIGS. 1 and 2 again, a part of the orthographic projection of the first opening hole 61 on the substrate 1 is located outside the orthographic projection of the first electrode 7 on the substrate 1. For example, the part of the orthographic projection of the first opening hole 61 on the substrate 1 is arranged staggered with the orthographic projection of the first electrode 7 on the substrate 1.

[0071] In this way, the first electrode 7 does not completely cover the first opening hole 61, and the water vapor in the insulating layer 5 can be discharged in time from the first opening hole 61 which is not covered by the first electrode 7. The orthographic projection of the first electrode 7 on the substrate 1 covers the part of the orthographic projection of the first opening hole 61 on the substrate 1.

[0072] Optionally, referring to FIGS. 1 and 2 again, the center of the orthographic projection of the first opening hole 61 on the substrate 1 is arranged spaced apart from the center of the orthographic projection of the first via hole 51 on the substrate 1. In this way, the first opening hole 61 and the first via hole 51 are arranged staggered, so that the first electrode 7 is more convenient to not completely cover the first opening hole 61.

[0073] In another optional embodiment, as shown in FIG. 3, the orthographic projection of the first opening hole 61 on the substrate 1 is located within the orthographic projection of the first electrode 7 on the substrate 1, and the orthographic projection of the first via hole 51 on the substrate 1 is located within the orthographic projection of the first electrode 7 on the substrate 1, that is, different from FIG. 2, the edge of the first electrode 7 and the edge of a part of the first opening hole 61 are arranged spaced apart in FIG. 2, and in the embodiment, the first electrode 7 covers the first opening hole 61 and the first via hole 51, so that the distribution area of the first electrode 7 can be increased, and the connection yield of the first electrode 7 and the driving circuit layer 2 can be ensured.

[0074] Optionally, referring to FIG. 1 and FIG. 2 again, the orthographic projection of the first opening 61 on the substrate 1 comprises a first edge 611 and a second edge 612 arranged oppositely, and the orthographic projection of the side of the first via 51 away from the substrate 1 on the substrate 1 comprises a third edge 511 and a fourth edge 512 arranged oppositely, and the first edge 611, the third edge 511, the fourth edge 512 and the second edge 612 are arranged in sequence. The third edge 511 is located on the side of the fourth edge 512 away from the light emitting unit 10 corresponding to the first opening 61. The light emitting unit 10 corresponding to the first opening 61: that is, the first electrode 7 of the light emitting unit 10 is electrically connected to the driving circuit layer 2 via the first opening 61.

[0075] Optionally, the minimum distance D1 between the first edge 611 and the third edge 511 is greater than the minimum distance D2 between the second edge 612 and the fourth edge 512. In this way, it can be more convenient for the first electrode 7 not to completely cover the first opening 61, and the water vapor in the insulating layer 5 can be discharged in time from the first edge 611 to the first electrode 7 towards the first edge 611.

[0076] In some possible implementation manners, referring to FIG. 1 and FIG. 2 again, the minimum distance D1 between the first edge 611 and the third edge 511 is greater than or equal to 2 μm and less than or equal to 10 μm, for example, the minimum distance D1 can be 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm, etc.

[0077] Optionally, the minimum distance D2 between the second edge 612 and the fourth edge 512 is greater than or equal to 0.3 μm and less than or equal to 5 μm, for example, the minimum distance D2 can be 0.3 μm, 1 μm, 2 μm, 3 μm, 4 μm, 4.5 μm or 5 μm, etc.

[0078] Reasonably setting the minimum distance D1 and the minimum distance D2 can make the water vapor in the insulating layer 5 discharged in time from the first opening 61, and at the same time, the first electrode 7 can be electrically connected to the driving circuit layer 2 through the first opening 61.

[0079] In some possible implementation manners, as shown in FIG. 2, the first electrode 7 is arranged apart from the first edge 611, for example, the orthographic projection of the first electrode 7 on the substrate 1 overlaps the orthographic projection of the second edge 612 on the substrate 1, for example, the orthographic projection of the first electrode 7 on the substrate 1 overlaps the orthographic projection of the fourth edge 512 on the substrate 1, for example, the orthographic projection of the first electrode 7 on the substrate 1 overlaps the orthographic projection of the third edge 511 on the substrate 1.

[0080] Optionally, the first edge 611 is located outside the orthographic projection of the first electrode 7 on the substrate 1.

[0081] Optionally, the third edge 511 is located within the orthographic projection of the first electrode 7 on the substrate 1.

[0082] Optionally, the first electrode 7 covers the sidewall of the first via 51.

[0083] In this embodiment, the first electrode 7 extends to the driving circuit layer 2 through one sidewall of the first via 51, and then extends to the side of the insulating layer 5 away from the substrate 1 through another sidewall of the first via 51. In this way, the first electrode 7 covers the second edge 612, the fourth edge 512 and the third edge 511. Since the first electrode 7 does not completely cover the first opening 61, the first electrode 7 does not cover the first edge 611.

[0084] Optionally, at least part of the orthographic projection of the first electrode 7 on the substrate 1 is located within the orthographic projection of the first opening 61 on the substrate 1. In this way, the first electrode 7 can be electrically connected to the driving circuit layer 2 through the first opening 61 and the first via 51.

[0085] Optionally, the minimum distance D3 between the orthographic projection on the substrate 1 of the part of the first electrode 7 located in the first opening 61 towards the side of the first edge 611 and the first edge 611 is greater than or equal to 2 μm and less than or equal to 8 μm. For example, the distance D3 can be 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm or 8 μm, etc. Reasonably setting the distance D3 can improve the blocking effect of the insulating layer 5 on the water vapor invading the light emitting unit 10 while ensuring that the water vapor in the insulating layer 5 is discharged in time.

[0086] Another embodiment is described below.

[0087] In some possible implementations, referring to FIGS. 4 and 5, the first via 51 is spaced apart from the first opening 61. That is, the first via 51 and the first opening 61 do not affect each other, which improves the problem of water vapor spreading from the first opening 61 to the first electrode 7 through the first via 51, and further improves the yield of the display panel.

[0088] Optionally, the inorganic layer 6 is provided with a second via 62 penetrating the inorganic layer 6, the first via 51 is in communication with the second via 62, and the first electrode 7 is electrically connected to the driving circuit layer 2 in sequence through the second via 62 and the first via 51.

[0089] Optionally, the orthographic projection of the first electrode 7 on the substrate 1 is located outside the orthographic projection of the first opening 61 on the substrate 1.

[0090] In this embodiment, the first opening 61 is spaced apart from the first via hole 51, and the first electrode 7 does not extend into the first opening 61. A second via hole 62 spaced apart from the first opening 61 is arranged on the inorganic layer 6. In this way, the water vapor in the insulating layer 5 can be discharged in time through the first opening 61, and the water vapor discharged from the first opening 61 is less likely to damage the first electrode 7, preventing the inorganic layer 6 from cracking. The first electrode 7 can be electrically connected to the driving circuit layer 2 through the second via hole 62 and the first via hole 51.

[0091] Optionally, the orthographic projection of the first via hole 51 on the substrate 1 overlaps the orthographic projection of the second via hole 62 on the substrate 1. In this way, the first electrode 7 can be electrically connected to the driving circuit layer 2 through both the first via hole 51 and the second via hole 62.

[0092] Optionally, the orthographic projection of the first via hole 51 on the substrate 1 is located within the orthographic projection of the second via hole 62 on the substrate 1. In this way, the second via hole 62 is large enough in size, and the first via hole 51 and the second via hole 62 form a sleeve hole. The inorganic layer 6 does not block part of the first electrode 7 in the first via hole 51, and the connection yield of the first electrode 7 and the driving circuit layer 2 can be improved.

[0093] Optionally, the center of the orthographic projection of the first via hole 51 on the substrate 1 coincides with the center of the orthographic projection of the second via hole 62 on the substrate 1. In this way, the edges of the orthographic projection of the first via hole 51 on the substrate 1 are equidistantly arranged between the edges of the orthographic projection of the second via hole 62 on the substrate 1. This improves the problem that part of the first via hole 51 may fall outside the second via hole 62 due to errors, thereby ensuring the connection yield of the first electrode 7 and the driving circuit layer 2.

[0094] In this way, the first electrode 7 is more conducive to being electrically connected to the driving circuit layer 2 through the second via hole 62 and the first via hole 51.

[0095] In some possible implementation manners, referring to FIGS. 4 and 5 again, the first via hole 51 and the first opening 61 are arranged along the direction in which the isolation structure 4 extends.

[0096] For example, the first via hole 51 and the first opening 61 are arranged along the circumferential direction of the isolation opening 11.

[0097] Since the first via hole 51 and the first opening 61 are arranged along the direction in which the isolation structure 4 extends or the circumferential direction of the isolation opening 11, the width of the isolation structure 4 arranged at the first via hole 51 and the first opening 61 can be reduced, thereby being more conducive to increasing the opening area of the isolation opening 11, and further improving the pixel aperture ratio of the display panel.

[0098] Optionally, as shown in FIG. 4 and FIG. 5, in the first via 51 and the first opening 61 adjacent to each other, the minimum distance D5 between the edge of the orthographic projection of the first via 51 on the substrate 1 and the edge of the orthographic projection of the first opening 61 on the substrate 1 is greater than or equal to 5 μm and less than or equal to 10 μm.

[0099] For example, the minimum distance D5 can be 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm, etc. Reasonably setting the minimum distance D5 can reduce the influence of the first opening 61 on the first via 51, so that the electrical connection effect between the first electrode 7 and the driving circuit layer 2 is better; at the same time, it can reduce the influence of the first opening 61 on the morphology of the isolation structure 4, so that the lapping effect of the second electrode 9 and the isolation structure 4 is better.

[0100] In some possible implementation manners, as shown in FIG. 4 and FIG. 5, the isolation structure 4 includes a first isolation unit 401 and a second isolation unit 402, the width of the orthographic projection of the first isolation unit 401 on the substrate 1 is greater than the width of the orthographic projection of the second isolation unit 402 on the substrate 1, the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is located within the orthographic projection of the first isolation unit 401 on the substrate 1, and the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is located outside the orthographic projection of the second isolation unit 402 on the substrate 1.

[0101] In this embodiment, the first opening 61 is arranged at the position of the first isolation unit 401 with a wider width, which can make the edge of the first opening 61 have less influence on the morphology of the isolation structure 4, the flatness of the isolation structure 4 is better, and the lapping effect of the second electrode 9 of the light emitting unit 10 and the isolation structure 4 is better, thereby improving the display effect of the display panel.

[0102] In some possible implementation manners, as shown in FIG. 4, the width D6 of the orthographic projection of the side of the first isolation unit 401 facing the substrate 1 on the substrate 1 is greater than the width D7 of the orthographic projection of the side of the second isolation unit 402 facing the substrate 1 on the substrate 1, and the orthographic projection of the first opening 61 on the substrate 1 is located within the orthographic projection of the side of the first isolation unit 401 facing the substrate 1 on the substrate 1. In this way, the influence of the edge of the first opening 61 on the morphology of the isolation structure 4 can be further reduced.

[0103] Optionally, the width D6 of the orthographic projection of the side of the first isolation unit 401 facing the substrate 1 on the substrate 1 is greater than or equal to 8 μm and less than or equal to 25 μm, for example, the width D6 can be 8 μm, 10 μm, 15 μm, 20 μm, 23 μm or 25 μm, etc.

[0104] Optionally, a width D7 of a normal projection of the second isolation unit 402 on the substrate 1 towards one side of the substrate 1 is greater than or equal to 4 μm and less than or equal to 10 μm, for example, the width D7 can be 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm, etc.

[0105] The width D6 and the width D7 are reasonably set, and the pixel aperture ratio of the display panel can be improved while effectively improving the flatness of the isolation structure 4.

[0106] The relative arrangement positions of the first isolation unit 401 and the second isolation unit 402 are various, for example, as shown in FIG. 4, the first isolation unit 401 and the second isolation unit 402 are arranged around the same isolation opening 11, and the first isolation unit 401 and the second isolation unit 402 are located on different sides of the isolation opening 11, the first isolation unit 401 extends along the second direction, the second isolation unit 402 extends along the first direction, and the extension length of the first isolation unit 401 in the second direction is greater than the extension length of the second isolation unit 402 in the first direction.

[0107] In the embodiment, the first isolation unit 401 and the second isolation unit 402 can be located on different sides of the same isolation opening 11, for example, the first isolation unit 401 is located on one side of the isolation opening 11 in the first direction and extends along the second direction, and the second isolation unit 402 is located on one side of the isolation opening 11 in the second direction and extends along the first direction.

[0108] Optionally, the first isolation unit 401 and the second isolation unit 402 enclose the isolation opening 11, the width D6 of the normal projection of the first isolation unit 401 on the substrate 1 is greater than the width D7 of the normal projection of the second isolation unit 402 on the substrate 1, the normal projection of the first opening 61 and the first via 51 on the substrate 1 is located in the normal projection of the first isolation unit 401 on the substrate 1, and the second direction X intersects the first direction Y.

[0109] Optionally, the width D6 of the normal projection of the first isolation unit 401 on the substrate 1 is the size of the normal projection of the first isolation unit 401 on the substrate 1 along the first direction Y; and the width D7 of the normal projection of the second isolation unit 402 on the substrate 1 is the size of the normal projection of the second isolation unit 402 on the substrate 1 along the second direction X.

[0110] Optionally, the gap between the adjacent isolation openings 11 arranged along the first direction Y is larger than the gap between the adjacent isolation openings 11 arranged along the second direction X. Optionally, the distance D6 between the adjacent isolation openings 11 arranged along the first direction Y is larger than the distance D5 between the adjacent isolation openings 11 arranged along the second direction X. In this way, the pixel aperture ratio of the display panel can be improved, and / or the flatness of the isolation structure 4 can be improved.

[0111] Optionally, the second direction X is perpendicular to the first direction Y.

[0112] The width D6 refers to the dimension of the orthogonal projection of the first isolation unit 401 on the substrate 1 in the first direction Y, and the width D7 refers to the dimension of the orthogonal projection of the second isolation unit 402 on the substrate 1 in the second direction X. The edge of the first opening 61 can affect the flatness of the isolation structure 4, thereby affecting the lapping effect of the second electrode 9 of the light-emitting unit 10 and the isolation structure 4, and finally affecting the display effect of the display panel.

[0113] In other optional embodiments, as shown in FIG. 7, the first isolation unit 401 and the second isolation unit 402 are arranged around different isolation openings 11. Alternatively, as shown in FIG. 13, the orthogonal projection of the isolation structure 4 on the substrate 1 is in a grid shape, and the first isolation unit 401 is located at the intersection position of the isolation structures 4 extending in different directions. The first isolation unit 401 is located at the intersection position, so that the first isolation unit 401 has a wider width and can better cover the first opening 61.

[0114] Optionally, as shown in FIG. 4, the extension length of the first isolation unit 401 in the second direction is greater than the extension length of the second isolation unit 402 in the first direction. The length and width of the first isolation unit 401 can be greater than those of the second isolation unit 402, the first opening 61 and the first isolation unit 401 are correspondingly arranged, the size of the first opening 61 can be appropriately increased, and the water vapor discharge effect can be improved.

[0115] Optionally, referring again to FIG. 4, the angle β between the line connecting the center of the orthogonal projection of the first via 51 on the substrate 1 and the center of the orthogonal projection of the first opening 61 on the substrate 1 and the second direction X is greater than or equal to 0 and less than 90°. For example, the angle β can be 0, 15°, 30°, 45°, 60°, 70°, 80° or 85°, and the like. In this way, the first isolation unit 401 can be arranged to be narrower, thereby being more conducive to increasing the opening area of the isolation opening 11.

[0116] Optionally, an angle β between a line connecting a center of a projection of the first via hole 51 on the substrate 1 and a center of a projection of the first opening hole 61 on the substrate 1 and the second direction X is greater than or equal to 0 and less than or equal to 30°. For example, the angle β can be 0, 5°, 10°, 15°, 20°, 25° or 30°, and the like, so that the first isolation unit 401 can be arranged to be narrower, thereby being more conducive to increasing the opening area of the isolation opening 11.

[0117] Optionally, referring to FIG. 1, the angle β between the line connecting the center of the projection of the first via hole 51 on the substrate 1 and the center of the projection of the first opening hole 61 on the substrate 1 and the second direction X is equal to 0. That is, the arrangement direction of the first via hole 51 and the first opening hole 61 is the same as the extension direction of the first isolation unit 401, so that more space can be provided for reducing the width of the first isolation unit 401, thereby further increasing the opening area of the isolation opening 11.

[0118] In some possible embodiments, referring to FIG. 1 and FIG. 2, corresponding to the same light emitting unit 10, the first via hole 51 corresponding to the first electrode 7 of the light emitting unit 10 and the adjacent at least one first opening hole 61 of the light emitting unit 10 are located on the same side of the light emitting unit 10.

[0119] Optionally, the first via hole 51 electrically connected to or corresponding to the first electrode 7 of the light emitting unit 10 is located on one side of the two opposite sides of the light emitting unit 10 along the first direction Y; and the adjacent first opening hole 61 of the light emitting unit 10 is located on at least one side of the two opposite sides of the light emitting unit 10 along the first direction Y.

[0120] For example, the first via hole 51 electrically connected to or corresponding to the first electrode 7 of the plurality of light emitting units 10 arranged along the second direction X is located on the same side of the two opposite sides of the light emitting unit 10 along the first direction Y.

[0121] For example, the first opening hole 61 is a plurality of. For example, the plurality of first opening holes 61 can be arranged at intervals.

[0122] For example, as shown in FIG. 1 and FIG. 4, the plurality of first opening holes 61 are arranged along the second direction X, for example, the plurality of first opening holes 61 are arranged along the second direction X at equal intervals or unequal intervals. For example, the distance between the adjacent first opening holes 61 arranged along the second direction X along the second direction X is greater than or equal to the distance between the centers of the adjacent isolation openings 11 arranged along the second direction X along the second direction X, and / or, the distance between the adjacent first opening holes 61 arranged along the second direction X along the second direction X is less than 2 times the distance between the centers of the adjacent isolation openings 11 arranged along the second direction X along the second direction X.

[0123] For example, the plurality of first openings 61 are arranged along the first direction Y, for example, the plurality of first openings 61 are arranged along the first direction Y at equal intervals or unequal intervals. For example, the distance between adjacent first openings 61 arranged along the first direction Y is greater than or equal to the distance between the centers of adjacent isolation openings 11 arranged along the first direction Y, and / or, the distance between adjacent first openings 61 arranged along the first direction Y is less than twice the distance between the centers of adjacent isolation openings 11 arranged along the first direction Y.

[0124] Optionally, as shown in FIG. 1 and FIG. 4, the isolation openings 11 and the first vias 51 are arranged alternately along the first direction Y.

[0125] In this way, arranging the first vias 51 corresponding to the plurality of light emitting units 10 arranged along the first direction Y on the same side and arranging the first openings 61 corresponding to the plurality of light emitting units 10 arranged along the first direction Y on the same side can make the arrangement of the plurality of first vias 51 and the plurality of first openings 61 in the display panel more uniform.

[0126] Optionally, the at least one first opening 61 and the at least one first via 51 are arranged along the second direction X, and the first direction Y and the second direction X intersect.

[0127] Optionally, as shown in FIG. 6, the plurality of first openings 61 and the plurality of first vias 51 are arranged alternately along the second direction X.

[0128] Arranging the at least one first opening 61 and the at least one first via 51 along the second direction X can reduce the space occupied by the first opening 61 and the first via 51, thereby more conducive to increasing the opening area of the corresponding isolation opening 11, and thus can improve the pixel aperture ratio of the display panel.

[0129] Optionally, the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is located within the orthographic projection on the substrate 1 of the region between the adjacent isolation openings 11 arranged along the first direction Y.

[0130] Optionally, the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is located outside the orthographic projection on the substrate 1 of the region between the adjacent isolation openings 11 arranged along the second direction X.

[0131] The width of the isolation structure 4 extending along the second direction X is greater than the width of the isolation structure 4 extending along the first direction Y, and arranging the first opening 61 and the first via 51 on the side of the isolation structure 4 extending along the second direction X close to the substrate 1 can reduce the influence of the first opening 61 on the topography of the isolation structure 4.

[0132] For example, the gap between the isolation openings 11 arranged along the first direction Y and adjacent to each other is greater than the gap between the isolation openings 11 arranged along the second direction X and adjacent to each other. For example, the interval between the isolation openings 11 arranged along the first direction Y and adjacent to each other is greater than the interval between the isolation openings 11 arranged along the second direction X and adjacent to each other. The orthogonal projection of the first opening 61 and the first via 51 on the substrate 1 is arranged in the gap between the adjacent isolation openings 11 with the greater gap, so that the pixel aperture ratio of the display panel can be improved.

[0133] For example, the orthogonal projection of the first opening 61 and the first via 51 on the substrate 1 is located within the orthogonal projection on the substrate 1 of the region between the pixel openings 31 arranged along the first direction Y and adjacent to each other. For example, the orthogonal projection of the first opening 61 and the first via 51 on the substrate 1 is located outside the orthogonal projection on the substrate 1 of the region between the pixel openings 31 arranged along the second direction X and adjacent to each other.

[0134] For example, the gap between the pixel openings 31 arranged along the first direction Y and adjacent to each other is greater than the gap between the pixel openings 31 arranged along the second direction X and adjacent to each other. For example, the interval between the pixel openings 31 arranged along the first direction Y and adjacent to each other is greater than the interval between the pixel openings 31 arranged along the second direction X and adjacent to each other. The orthogonal projection of the first opening 61 and the first via 51 on the substrate 1 is arranged in the gap between the adjacent pixel openings 31 with the greater gap, so that the pixel aperture ratio of the display panel can be improved.

[0135] In some possible embodiments, as shown in FIG. 4, FIG. 5 and FIG. 7, the isolation structure 4 includes a third isolation unit 403 and a fourth isolation unit 404, the length of the orthogonal projection of the third isolation unit 403 on the substrate 1 is greater than the length of the orthogonal projection of the fourth isolation unit 404 on the substrate 1, the orthogonal projection of the first opening 61 on the substrate 1 is located within the orthogonal projection of the third isolation unit 403 on the substrate 1, and the orthogonal projection of the first opening 61 on the substrate 1 is located outside the orthogonal projection of the fourth isolation unit 404 on the substrate 1.

[0136] In these optional embodiments, the first opening 61 is correspondingly arranged below the third isolation unit 403 with the greater length, and by reasonably setting the length of the first opening 61, the distribution area of the first opening 61 can be increased.

[0137] Optionally, as shown in FIG. 4, the third isolation unit 403 and the first isolation unit 401 can be multiplexed, and the fourth isolation unit 404 and the second isolation unit 402 can be multiplexed, that is, the width of the third isolation unit 403 can be greater than the width of the fourth isolation unit 404, so that the first opening 61 can be correspondingly arranged below the third isolation unit 403 with both the greater length and the greater width.

[0138] In some possible embodiments, the third isolation unit 403 has a width smaller than that of the fourth isolation unit 404.

[0139] Optionally, the third isolation unit 403 and the fourth isolation unit 404 can be arranged in various manners, for example, as shown in FIG. 7 and FIG. 8, the third isolation unit 403 and the fourth isolation unit 404 are arranged around the same pixel opening 31, and the third isolation unit 403 and the fourth isolation unit 404 are located at different sides of the pixel opening 31. In some possible embodiments, the third isolation unit 403 and the fourth isolation unit 404 are arranged around different pixel openings 31. Alternatively, the isolation structure 4 has a grid shape in the orthographic projection of the substrate 1, and the third isolation unit 403 is located at the intersection of the isolation structure 4 extending in different directions. The third isolation unit 403 is located at the intersection, so that the third isolation unit 403 has a wider width and can better cover the first opening 61.

[0140] In some possible embodiments, referring again to FIG. 4 and FIG. 7, the orthographic projection of the isolation opening 11 on the substrate 1 includes a fifth edge 4011 extending along the second direction X and a sixth edge 4021 extending along the first direction Y.

[0141] For example, each isolation opening 11 includes two fifth edges 4011 opposite along the first direction Y. For example, each isolation opening 11 includes two sixth edges 4021 opposite along the second direction X. Optionally, the orthographic projection of the first isolation unit 401 on the substrate 1 is located between the fifth edges 4011 of two adjacent isolation openings 11, the orthographic projection of the second isolation unit 402 on the substrate 1 is located between the sixth edges 4021 of two adjacent isolation openings 11, and the fifth edge 4011 has a length smaller than that of the sixth edge 4021.

[0142] Optionally, as shown in FIG. 4, the first opening 61 is located between two fifth edges 4011 of adjacent isolation openings 11, that is, the first opening 61 is arranged at the short edge of the isolation opening 11, and the first opening 61 is not arranged at the long edge of the isolation opening 11. The width of the isolation structure 4 at the position where the first opening 61 is not arranged is relatively smaller than that of the isolation structure 4 at the position where the first opening 61 is arranged, which is more conducive to reducing the width of the isolation structure 4 at the long edge of the isolation opening 11, more conducive to increasing the opening area of the isolation opening 11, and further conducive to improving the pixel aperture ratio of the display panel, and finally the display effect of the display panel can be further improved.

[0143] Optionally, as shown in FIG. 7, the third isolation unit 403 is located between the sixth edges 4021 of two adjacent isolation openings 11, and the fourth isolation unit 404 is located between the fifth edges 4011 of two adjacent isolation openings 11. The first opening 61 is located between the sixth edges 4021 of two adjacent isolation openings 11. Optionally, the projection of the first opening 61 on the substrate 1 extends in the second direction to increase the distribution area of the first opening 61 as much as possible and improve the exhaust effect.

[0144] Optionally, as shown in FIG. 7, the second via 62 is provided on the inorganic layer 6 and penetrates the inorganic layer 6. The projection of the second via 62 on the substrate 1 is located within the projection of the fourth isolation unit 404 on the substrate 1, and the projection of the second via 62 on the substrate 1 overlaps the projection of the first via 51 on the substrate 1. In these optional embodiments, the second via 62 and the first via 51 are arranged corresponding to the fourth isolation unit 404 to connect the first electrode 7 to the driving circuit layer 2, and the first opening 61 and the third isolation unit 403 are arranged corresponding to the fourth isolation unit 404 to exhaust water vapor.

[0145] Alternatively, in other optional embodiments, as shown in FIG. 9, the fifth edges 4011 have a greater extension length than the sixth edges 4021. The third isolation unit 403 is located between the fifth edges 4011 of two adjacent isolation openings 11, and the fourth isolation unit 404 is located between the sixth edges 4021 of two adjacent isolation openings 11. That is, the first opening 21 is arranged between the fifth edges 4011 of two adjacent isolation openings 11. The fifth edges 4011 of two adjacent isolation openings 11 are arranged opposite and adjacent to each other. Since the fifth edges 4011 have a greater extension length than the sixth edges 4021, the fifth edges 4011 of two adjacent isolation openings 11 have a greater arrangement space therebetween. Therefore, a first opening 21 with a more appropriate size can be arranged between the fifth edges 4011 of two adjacent isolation openings 11. Since the first opening 21 with a more appropriate size can be arranged, the inorganic layer 6 can effectively prevent external water vapor from entering the insulating layer 5 before the first electrode 7 of the light emitting unit 10 is formed. When the first electrode 7 of the light emitting unit 10 is formed and then baked, the water vapor in the insulating layer 5 can be discharged from the first opening 21 more timely, so that the insulating layer 5 and the inorganic layer 6 are less likely to crack, and the corresponding light emitting unit 10 is less likely to have a dark spot, thereby improving the reliability and display effect of the display panel.

[0146] Based on the above design, by arranging the first opening 21 on the inorganic layer 6 between two fifth edges 4011 of the adjacent isolation opening 11, the water vapor in the insulating layer 5 can be discharged through the first opening 21 more timely, so as not to easily cause the insulating layer 5 and the inorganic layer 6 to crack, and not to easily cause the corresponding light emitting unit 10 to produce dark spots, thereby improving the reliability and display effect of the display panel.

[0147] In some possible implementation manners, as shown in FIG. 4, the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is located in the orthographic projection on the substrate 1 of the side of the isolation structure 4 facing the substrate 1. The first opening 61 and the first via 51 are misaligned with the isolation opening 11 and the pixel opening 31, so as to increase the distribution area and the pixel opening rate of the pixel opening 31 as much as possible.

[0148] Optionally, the distance between the edge of the orthographic projection on the substrate 1 of the side of the first opening 61 away from the substrate 1 and the orthographic projection on the substrate 1 of the side of the side wall of the isolation structure 4 facing the isolation opening 11 close to the substrate 1 is greater than 0 and less than or equal to 10 μm.

[0149] In some possible implementation manners, please refer to FIGS. 10-12, the display panel includes a display area AA and a non-display area AB, for example, the non-display area AB surrounds at least part of the display area AA. The display panel further includes the pixel definition layer 3 described above, and the pixel definition layer 3 extends from the display area AA to the non-display area AB.

[0150] In the related art, the pixel definition layer 3 located in the non-display area AB is provided with a third opening 72 penetrating the pixel definition layer 3. Before the light emitting unit 10 is formed, the water vapor from outside is easy to enter the non-display area AB through the third opening 72, then enters the display area AA from the non-display area AB, and finally enters the light emitting unit 10, so as to cause the corresponding light emitting unit 10 to produce dark spots. The pixel definition layer 3 can include an inorganic insulating material.

[0151] The present application solves the above problems in the related art in the following two ways.

[0152] In some embodiments, referring to FIG. 11 again, the orthogonal projection of the isolation structure 1 on the substrate 1 is located within the orthogonal projection range of the pixel defining layer 3 on the substrate 1, the pixel defining layer 3 extends from the display area AA to the non-display area AB, and the pixel defining layer 3 located in the non-display area AB insulates the isolation structure 8 and the substrate 1. The pixel defining layer 3 defines a plurality of pixel openings 31 in the display area AA, the pixel openings 31 are in communication with the isolation openings 44, at least part of the light emitting unit 10 is located in the pixel opening 31, and the orthogonal projection of the first opening 61 on the substrate 1 and the orthogonal projection of the pixel opening 31 on the substrate 1 are arranged staggeredly.

[0153] The inventor has found through long-term research that the third opening 72 is not arranged on the pixel defining layer 3 located in the non-display area AB, and the performance of the display panel is not affected, so in this embodiment, the third opening 72 is not arranged on the pixel defining layer 3 located in the non-display area AB, and the pixel defining layer 3 located in the non-display area AB can insulate the external water vapor, so that the external water vapor cannot easily enter the light emitting unit 10 through the pixel defining layer 3 located in the non-display area AB before the light emitting unit 10 is formed.

[0154] In other embodiments, referring to FIG. 12 again, along the thickness direction Z of the substrate 1, the third opening 72 penetrating the pixel defining layer 3 is arranged on the pixel defining layer 3 located in the non-display area AB, and the inorganic layer 6 extends from the display area AA to the non-display area AB, and the orthogonal projection of the inorganic layer 6 on the substrate 1 covers the orthogonal projection of the third opening 72 on the substrate 1.

[0155] In this embodiment, the third opening 72 on the pixel defining layer 3 is retained, and the inorganic layer 6 extends from the display area AA to the non-display area AB, so that the inorganic layer 6 can block the third opening 72, and the external water vapor cannot easily enter the light emitting unit 10 through the third opening 72.

[0156] Optionally, referring to FIGS. 1 to 12, the orthogonal projection of the first opening 21 on the substrate 1 is in a polygonal shape (for example, a rectangular or oblong or square shape) or an elliptical shape or a circular shape. In this way, the shape of the first opening 21 can be reasonably arranged according to actual needs.

[0157] In some possible implementation manners, referring to FIGS. 7 and 8 again, along the thickness direction Z of the substrate 1, the inorganic layer 6 is provided with a second via 62 penetrating the inorganic layer 6.

[0158] For example, the second via 62 is located between two sixth edges 4021 of adjacent isolation openings 11, and the orthogonal projection of the second via 62 on the substrate 1 overlaps the orthogonal projection of the first via 51 on the substrate 1.

[0159] Optionally, the first electrode 7 is electrically connected with the driving circuit layer 2 through the second via hole 62 and the first via hole 51; the orthographic projection of the second via hole 62 on the substrate 1 overlaps the orthographic projection of the first via hole 51 on the substrate 1.

[0160] The second via hole 62 is arranged between two sixth edges 4021 of the adjacent isolation opening 11. The combination of the first opening 21 on the inorganic layer 6 and the second via hole 62 can release the water vapor in the insulating layer 5 in a more timely manner.

[0161] In some possible implementation manners, referring to FIGS. 7 and 8 again, the center of the orthographic projection of the second via hole 62 on the substrate 1 coincides with the center of the orthographic projection of the first via hole 51 on the substrate 1. In this way, the first electrode 7 can be more easily electrically connected with the driving circuit layer 2 through the second via hole 62 and the first via hole 51.

[0162] Optionally, referring to FIGS. 13 and 14 again, the distance W1 between the edge of the orthographic projection of the side of the first opening 61 away from the substrate 1 on the substrate 1 and the orthographic projection of the side of the side wall of the isolation structure 4 facing the isolation opening 11 close to the substrate 1 on the substrate 1 is greater than 0 and less than or equal to 10 μm, for example, the distance W1 can be 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm, and the like.

[0163] Optionally, the distance W1 between the edge of the orthographic projection of the side of the first opening 61 away from the substrate 1 on the substrate 1 and the orthographic projection of the side of the side wall of the isolation structure 4 facing the isolation opening 11 close to the substrate 1 on the substrate 1 is greater than or equal to 1 μm and less than or equal to 10 μm, for example, the distance W1 can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm, and the like.

[0164] Reasonably setting the distance W1 can reduce the influence of the edge of the first opening 61 on the morphology of the isolation structure 4, and can effectively improve the planarity of the isolation structure 4.

[0165] In some possible implementation manners, as shown in FIGS. 15 and 16, the orthographic projection of the inorganic layer 6 on the substrate 1 is in a mesh shape, and a plurality of first openings 61 are distributed at intervals. The inorganic layer 6 covers the insulating layer 5 on the whole surface, which can further improve the blocking effect of the water vapor in the insulating layer 5. For example, the inorganic layer 6 is in contact with the first electrode 7. For example, the orthographic projection of the pixel opening 31 on the substrate 1 is located in the orthographic projection of the inorganic layer 6 on the substrate 1.

[0166] In some alternative embodiments, as shown in FIG. 17, a plurality of the first openings 61 are in communication with each other to divide the inorganic layer 6 into a plurality of body portions 63 spaced apart from each other. In these alternative embodiments, the plurality of first openings 61 are in communication with each other so that the distribution area of the first openings 61 is larger, which can improve the exhaust effect.

[0167] In some possible implementations, as shown in FIG. 10, the display panel has a display area, and a plurality of the first openings 61 are located in the display area, and the ratio of the sum of the areas of the projections of the substrate 1 to the area of the display area is 5% to 20%. For example, the ratio of the sum of the areas of the projections of the substrate 1 to the area of the display area is 5%, 12%, 18%, 21.5%, 20%, etc., so as to improve the exhaust effect due to the small distribution area of the plurality of first openings 61, and also to improve the protection effect of the inorganic layer 6 due to the large distribution area of the plurality of first openings 61.

[0168] In some possible implementations, as shown in FIG. 18, the isolation structure 4 is formed with a recessed portion 405 away from the surface of the substrate 1, the recessed portion 405 is recessed towards the substrate 1, and the projection of the recessed portion 405 on the substrate 1 at least partially overlaps the projection of the first opening 61 on the substrate 1. In these alternative implementations, the isolation structure 4 is arranged on the inorganic layer 6, and due to the presence of the first opening 61, the surface of the film layer where the isolation structure 4 is arranged is uneven, so that the recessed portion 405 is easily formed on the isolation structure 4, and the recessed portion 405 is located on the first opening 61.

[0169] In some possible implementations, as shown in FIG. 18, the isolation structure 4 includes a first isolation portion 41 and a second isolation portion 42 arranged in a stack away from the substrate 1, the second isolation portion 42 is arranged protruding towards the isolation opening 11 relative to the first isolation portion 41, and the projection of the first opening 61 on the substrate 1 is located within the projection of the first isolation portion 41 on the substrate 1.

[0170] In these alternative implementations, the isolation structure 4 includes the first isolation portion 41 and the second isolation portion 42, the cross-sectional size of the second isolation portion 42 is larger than that of the first isolation portion 41, so that the second isolation portion 42 can be arranged protruding towards the isolation opening 11 relative to the first isolation portion 41, and an inner recess is formed under the second isolation portion 42, so as to facilitate the isolation structure 4 to divide the luminescent material into independent luminescent units 10. The projection of the first opening 61 on the substrate 1 is located within the projection of the first isolation portion 41 on the substrate 1, i.e., the first opening 61 is below the first isolation portion 41 with a smaller size, so that the isolation structure 4 can better cover the first opening 61, and further improve the pixel aperture ratio.

[0171] In some optional embodiments, as shown in FIG. 18, the first isolation portion 41 includes a first surface facing the substrate 1 and a second surface facing away from the substrate 1, and the minimum distance W2 between the edge of the orthographic projection of the smaller one of the first surface and the second surface on the substrate 1 and the edge of the orthographic projection of the first opening 61 on the substrate 1 is greater than or equal to 1 μm. For example, the first isolation portion 41 gradually decreases in cross-sectional area in a direction away from the substrate 1, and the cross-sectional area of the second surface of the first isolation portion 41 facing away from the substrate 1 is the smallest, and then the minimum distance between the edge of the orthographic projection of the second surface of the first isolation portion 41 on the substrate 1 and the edge of the orthographic projection of the first opening 61 on the substrate 1 is greater than or equal to 1 μm.

[0172] In these optional embodiments, the minimum distance between the edge of the orthographic projection of the first opening 61 on the substrate 1 and the edge of the orthographic projection of the first isolation portion 41 on the substrate 1 is greater, so as to avoid the case that the first isolation portion 41 is difficult to cover the first opening 61 due to process errors.

[0173] In some optional embodiments, as shown in FIG. 19, the display panel further includes a signal trace 17, and the orthographic projection of the signal trace 17 on the substrate 1 and the orthographic projection of the first opening 61 on the substrate 1 at least partially overlap. The signal trace includes a touch trace 171 of the display panel, and / or the driving circuit layer 2 includes an array trace, and the signal trace 17 includes the array trace. The local thickness of the display panel can be thinned.

[0174] Optionally, as shown in FIG. 19, the touch trace 171 can be located on the side of the third encapsulation layer 14 facing away from the second encapsulation layer 13, so as to improve the influence of the touch trace 171 on the encapsulation effect. Optionally, the touch trace 171 can be in a grid shape and used to form a touch electrode. Optionally, the orthographic projection of the touch trace 171 on the substrate 1 is located within the orthographic projection of the isolation structure 4 on the substrate 1, i.e., the touch trace 171 and the isolation opening 11 are arranged in a staggered manner, so as to improve the influence of the touch trace 171 on the light emission effect.

[0175] Optionally, the array trace can include at least one of a data signal line, a scan signal line, a power voltage signal line, a reference voltage signal line, and a light emission control signal line.

[0176] Optionally, the extending direction of the signal line 17 intersects with the extending direction of the first opening 61. The extending direction of the signal line 17 is the length direction of the signal line 17, and the size of the signal line 17 in the extending direction is greater than that in other directions. The extending direction of the first opening 61 is the extending direction of the orthographic projection of the first opening 61 on the substrate 1, and the size of the orthographic projection of the first opening 61 on the substrate 1 in the extending direction is greater than that in other directions. For example, the extending direction of the signal line 17 can be the first direction Y, and the extending direction of the first opening 61 can be the second direction X, so as to reduce the overlapping area of the signal line 17 and the first opening 61 as much as possible and improve the influence of the first opening 61 on the signal line 17. Optionally, when the signal line 17 includes the touch line 171, in the orthographic projection of the touch line 171 and the first opening 61 that overlap with each other, the extending direction of the touch line 171 intersects with the extending direction of the first opening 61. That is, when the orthographic projection of the touch line 171 on the substrate 1 and the orthographic projection of the first opening 61 on the substrate 1 at least partially overlap, the extending direction of the touch line 171 intersects with the extending direction of the first opening 61.

[0177] Optionally, when the signal line 17 includes the array line, in the orthographic projection of the array line and the first opening 61 that overlap with each other, the extending direction of the array line intersects with the extending direction of the first opening 61. That is, when the orthographic projection of the array line on the substrate 1 and the orthographic projection of the first opening 61 on the substrate 1 at least partially overlap, the extending direction of the array line intersects with the extending direction of the first opening 61.

[0178] Optionally, the line width of the signal line 17 is less than the width of the first opening 61. The width direction of the signal line 17 is perpendicular to the extending direction of the signal line 17, and both the width direction and the extending direction of the signal line 17 are parallel to the display surface of the display panel. Similarly, the width direction of the first opening 61 is perpendicular to the extending direction of the first opening 61, and both the width direction and the extending direction of the first opening 61 are parallel to the display surface of the display panel. For example, when the extending direction of the signal line 17 is the first direction Y, the width direction of the signal line 17 is the second direction X, and the line width of the signal line 17 is the size of the signal line 17 in the second direction X. When the extending direction of the first opening 61 is the second direction X, the width direction of the first opening 61 is the first direction Y, and the width of the first opening 61 is the extending size of the first opening 61 in the first direction Y. In the embodiment of the present application, the width of the first opening 61 is large, so that the distribution area of the first opening 61 is large, and the exhaust effect is improved.

[0179] Optionally, when the signal wire 17 comprises the touch wire 171, the line width of the touch wire 171 is less than the width of the first opening 61. Optionally, when the signal wire 17 comprises the array wire, the line width of the array wire is less than the width of the first opening 61. Optionally, referring to FIG. 20, the light emitting unit 10 comprises first light emitting units 101 and second light emitting units 102 with different light emitting colors, and the first light emitting units 101 and the second light emitting units 102 are arranged alternately along the second direction X; at least part of the fifth edges 4011 of the isolation openings 11 corresponding to the first light emitting units 101 and the second light emitting units 102 arranged along the second direction X are collinear.

[0180] Optionally, the light emitting unit 10 comprises first light emitting units 101, second light emitting units 102 and third light emitting units 103 with different light emitting colors, and the first light emitting units 101, the second light emitting units 102 and the third light emitting units 103 are arranged in sequence along the second direction X; at least part of the fifth edges 4011 of the isolation openings 11 corresponding to the first light emitting units 101, the second light emitting units 102 and the third light emitting units 103 arranged along the second direction X are collinear.

[0181] Optionally, at least part of the sixth edges 4021 of the isolation openings 11 corresponding to the first light emitting units 101 arranged along the first direction Y are collinear.

[0182] Optionally, at least part of the sixth edges 4021 of the isolation openings 11 corresponding to the second light emitting units 102 arranged along the first direction Y are collinear.

[0183] Optionally, at least part of the sixth edges 4021 of the isolation openings 11 corresponding to the third light emitting units 103 arranged along the first direction Y are collinear.

[0184] For example, the first light emitting units 101 can be used to emit light of one of red, green and blue. For example, the second light emitting units 102 can be used to emit light of one of red, green and blue. For example, the third light emitting units 103 can be used to emit light of one of red, green and blue.

[0185] In this way, the arrangement of the first light emitting units 101, the second light emitting units 102 and the third light emitting units 103 is more uniform, so that the display effect of the display panel is better.

[0186] Optionally, the size of the first opening 61 along the second direction X is greater than the size of the first opening 61 along the first direction Y.

[0187] Optionally, the shape of the orthographic projection of the first opening 61 on the substrate 1 comprises a rectangle, for example, an oblong.

[0188] In this way, the width of the first isolation unit 401 can be set to be narrower without affecting the appearance of the isolation structure 4, and thus the opening area of the isolation opening 11 can be further increased, and the pixel aperture ratio of the display panel can be further improved.

[0189] Optionally, the shape of the orthographic projection of the first opening 61 on the substrate 1 comprises one or more of a circle, an ellipse, a polygon (for example, a quadrilateral, a pentagon, a hexagon, an octagon, etc.), a polygon with rounded corners (for example, a rounded rectangle), and the like.

[0190] In some possible embodiments, referring again to FIGS. 3-6, the orthographic projection of the first opening 61 on the substrate 1 comprises a first edge 611 extending along the second direction X and a seventh edge 613 extending along the first direction Y.

[0191] For example, the extension length L2 of the seventh edge 613 is less than the extension length L1 of the first edge 611.

[0192] Optionally, the ratio of the extension length L1 of the first edge 611 to the extension length L2 of the seventh edge 613 is greater than 1 and less than or equal to 12.5. For example, the ratio of the length L1 to the length L2 can be 1, 2, 3, 5, 7, 9, 10, 11, 12, or 12.5. Reasonably setting the ratio of the length L1 to the length L2 can make the first opening 61 extend longer in the second direction X while effectively improving the flatness of the isolation structure 4, and thus the pixel aperture ratio of the display panel can be improved.

[0193] Optionally, the extension length L1 of the first edge 611 is greater than or equal to 5 μm and less than or equal to 25 μm. For example, the length L1 can be 5 μm, 7 μm, 10 μm, 15 μm, 20 μm, 23 μm, or 25 μm, and the like.

[0194] Optionally, the extension length L2 of the seventh edge 613 is greater than or equal to 2 μm and less than or equal to 10 μm. For example, the length L2 can be 2 μm, 3 μm, 5 μm, 7 μm, 9 μm, or 10 μm, and the like.

[0195] 31

[0196] In some possible embodiments, the material of the inorganic layer 6 comprises a water-blocking material, and / or the material of the insulating layer 5 comprises an organic material.

[0197] Water vapor is easy to pass through an organic material, and thus water vapor is easy to pass through the insulating layer 5. The water-blocking material can block water vapor, and thus the inorganic layer 6 can block water vapor in the insulating layer 5 from entering the light-emitting unit 10.

[0198] Optionally, the material of the inorganic layer 6 comprises an inorganic material.

[0199] Specifically, the material of the inorganic layer 6 comprises at least one of silicon nitride, silicon oxide or silicon oxynitride. Reasonably setting the material of the inorganic layer 6 can improve the barrier effect of the inorganic layer 6 on the water vapor in the insulating layer 5.

[0200] In some possible implementation, referring to FIG. 15 and FIG. 16, the orthographic projection of the inorganic layer 6 on the substrate 1 is in a mesh shape. The inorganic layer 6 covers the insulating layer 5 entirely, which can further improve the barrier effect on the water vapor in the insulating layer 5. For example, the mesh holes in the mesh shape comprise the first openings 61.

[0201] Optionally, the side of the insulating layer 5 away from the substrate 1 is in contact with the side of the inorganic layer 6 close to the substrate 1. In this way, the inorganic layer 6 can directly block the water vapor in the insulating layer 5, thereby further improving the barrier effect on the water vapor in the insulating layer 5.

[0202] Optionally, referring again to FIG. 2, along the thickness direction Z of the substrate 1, the thickness H of the inorganic layer 6 is greater than or equal to and less than or equal to For example, the thickness H can be or and so on. Reasonably setting the thickness H can improve the barrier effect of the inorganic layer 6 on the water vapor in the insulating layer 5.

[0203] In some possible implementation, referring to FIG. 21 and FIG. 22, the display panel further comprises the encapsulation units 12 located at the side of the light emitting units 10 away from the substrate 1. For example, the encapsulation units 12 can be multiple. For example, at least part of the encapsulation units 12 extend from the side of the isolation structure 4 facing the isolation opening 11 to the side of the isolation structure 4 away from the substrate 1, and the encapsulation units 12 are spaced apart on the side of the isolation structure 4 away from the substrate 1.

[0204] For example, the display panel comprises multiple encapsulation units 12 spaced apart. For example, the light emitting units 10 of different light emitting colors correspond to different encapsulation units 12.

[0205] Optionally, the encapsulation units 12 located on the side of the isolation structure 4 away from the substrate 1 have a gap between the encapsulation units 12 and the side of the isolation structure 4 away from the substrate 1.

[0206] In the patterning process of the light emitting units 10, the first encapsulation material layer is broken at the isolation structure 4 to form the encapsulation units 12, and the encapsulation units 12 can completely encapsulate the corresponding light emitting units 10 independently, thereby improving the display characteristics of the display panel.

[0207] In some possible implementation, referring to FIG. 19, the display panel further comprises a second encapsulation layer 13 located at the side of the encapsulation units 12 away from the substrate 1.

[0208] For example, the display panel further comprises a third encapsulation layer 14 located on the side of the second encapsulation layer 13 away from the substrate 1.

[0209] Optionally, the material of the encapsulation units 12 all comprises inorganic material, and / or the material of the third encapsulation layer 14 all comprises inorganic material, and the material of the second encapsulation layer 13 comprises organic material.

[0210] For example, the encapsulation units 12 and the third encapsulation layer 14 can be formed by chemical vapor deposition (CVD), and the second encapsulation layer 13 can be formed by ink-jet printing (IJP). The second encapsulation layer 13 and the third encapsulation layer 14 can provide better encapsulation effect for the light-emitting units 10, thereby further improving the encapsulation quality of the display panel.

[0211] For example, the isolation structure 4 comprises conductive material, and the second electrode 9 is electrically connected with the isolation structure 4.

[0212] In some possible implementation manners, referring to FIG. 4 again, the isolation structure 4 comprises a first isolation part 41 and a second isolation part 42 which are sequentially stacked in the direction away from the substrate 1, and the orthographic projection of the side of the first isolation part 41 away from the substrate 1 on the substrate 1 is located within the orthographic projection of the second isolation part 42 on the substrate 1.

[0213] Since the second isolation part 42 is located on the side of the first isolation part 41 away from the substrate 1, and in the plane parallel to the substrate 1, the lateral width of the second isolation part 42 is greater than the lateral width of the first isolation part 41, so the second isolation part 42 can break the material layers of the light-emitting material and the second electrode 9 at the isolation structure 4. In this way, the isolation structure 4 formed by the first isolation part 41 and the second isolation part 42 can more easily encapsulate the light-emitting units 10 independently, thereby improving the encapsulation yield of the display panel.

[0214] Optionally, the orthographic projection of the first opening 61 on the substrate 1 is located within the orthographic projection of the first isolation part 41 on the substrate 1.

[0215] Optionally, the orthographic projection of the first opening 61 on the substrate 1 is located within the orthographic projection of the side of the first isolation part 41 away from the substrate 1 on the substrate 1.

[0216] In this way, the first opening 61 is less likely to affect the morphology of the isolation structure 4, thereby making the lapping effect of the second electrode 9 and the isolation structure 4 better.

[0217] Optionally, referring to FIG. 5 again, a distance W between a side of the first isolation portion 41 facing the sidewall of the isolation opening 11 away from the substrate 1 in a projection of the first isolation portion 41 on the substrate 1 and an edge of a side of the first opening 61 away from the substrate 1 in a projection of the first opening 61 on the substrate 1 is greater than 0. For example, the distance W can be 0.2 μm, 0.5 μm, 0.7 μm, 1 μm, 1.3 μm, or 1.5 μm, etc. Reasonably setting the distance W can make the first opening 61 less likely to affect the profile of the isolation structure 4.

[0218] Optionally, referring to FIG. 5 again, the distance W between the side of the first isolation portion 41 facing the sidewall of the isolation opening 11 away from the substrate 1 in the projection of the first isolation portion 41 on the substrate 1 and the edge of the side of the first opening 61 away from the substrate 1 in the projection of the first opening 61 on the substrate 1 is greater than 1 μm and less than or equal to 10 μm. For example, the distance W can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, or 10 μm, etc.

[0219] As shown in FIG. 23, the second electrode 9 is electrically connected with the first isolation portion 41; the first isolation portion 41 comprises a conductive material, and the second electrode 9 corresponding to the light emitting unit 10 extends to contact the sidewall of the first isolation portion 41 to realize the electrical connection between the second electrode 9 corresponding to the light emitting unit 10 and the first isolation portion 41.

[0220] As shown in FIG. 24, the isolation structure 4 further comprises a third isolation portion 43 located at a side of the first isolation portion 41 facing the substrate 1, and the second electrode 9 is electrically connected with the third isolation portion 43.

[0221] The third isolation portion 43 comprises a conductive material, and the second electrode 9 corresponding to the light emitting unit 10 extends to contact the sidewall of the third isolation portion 43 to realize the electrical connection between the second electrode 9 corresponding to the light emitting unit 10 and the third isolation portion 43.

[0222] Specifically, the material of the third isolation portion 43 comprises a metal material, for example, molybdenum; and / or, the material of the first isolation portion 41 comprises a conductive material, for example, a metal material, for example, aluminum; and / or, the material of the second isolation portion 42 comprises a conductive material, for example, a metal material, for example, titanium. In this way, when the isolation structure 4 separates the material layer of the second electrode 9 into the second electrode 9, the second electrode 9 is more likely to be electrically connected with the first isolation portion 41 and / or the third isolation portion 43.

[0223] For example, a projection of the light emitting portion 8 on the substrate 1 is located outside the projection of the third isolation portion 43 and / or the first isolation portion 41 on the substrate 1. In this way, the light emitting portion 8 does not overlap with the isolation structure 4, thereby effectively improving the crosstalk problem between the light emitting units 10.

[0224] In some possible implementation manners, referring to FIGS. 25 and 26, the light emitting unit 10 is located on the side of the inorganic layer 6 away from the substrate 1, and the light emitting unit 10 includes the first electrode 7, which is electrically connected to the driving circuit layer 2 through the first opening 61 and the first via hole 51. The first via hole 51 corresponding to the first electrode 7 of the light emitting unit 10 and the at least one first opening 61 adjacent to the light emitting unit 10 are located on the same side of the light emitting unit 10. In this way, the pixel aperture ratio of the display panel can be improved, and thus the display effect of the display panel can be improved.

[0225] The inorganic layer 6 has a water vapor blocking effect. In this embodiment, the inorganic layer 6 is arranged between the light emitting unit 10 and the insulating layer 5. On one hand, the inorganic layer 6 can block the water vapor in the external environment from entering the insulating layer 5. On the other hand, the inorganic layer 6 can block the water vapor in the insulating layer 5 from invading the light emitting material layer of the light emitting unit 10, so as to reduce the risk of generating dark spots in the light emitting unit 10 due to the water vapor in the insulating layer 5, and thus the display effect of the display panel can be improved.

[0226] If the inorganic layer 6 completely covers the insulating layer 5, the water vapor in the insulating layer 5 cannot be discharged in the subsequent preparation process of the display panel. When the water vapor in the insulating layer 5 reaches a certain amount, the inorganic layer 6 is prone to be cracked, thereby affecting the stability of the inorganic layer 6 and finally affecting the effect of blocking the water vapor in the insulating layer 5 from invading the light emitting unit 10.

[0227] In this embodiment, because the first opening 61 is arranged on the inorganic layer 6, the water vapor in the insulating layer 5 can be discharged in time in the subsequent preparation process of the display panel, so as to not easily cause the inorganic layer 6 to be cracked. Because the orthographic projection of the first opening 61 on the substrate 1 is located outside the orthographic projection of the light emitting unit 10 on the substrate 1, the gas discharged from the first opening 61 is not easy to invade the light emitting unit 10, so as to not easily cause the light emitting unit 10 to generate dark spots.

[0228] The embodiment can be combined with some or all of the features in the above-described embodiments, which will not be described here.

[0229] The spacing D6 between the light emitting regions (corresponding to the pixel openings 31) of the light emitting units 10 arranged along the first direction Y and adjacent to each other is greater than the spacing D5 between the light emitting regions (corresponding to the pixel openings 31) of the light emitting units 10 arranged along the second direction X and adjacent to each other; the first direction Y and the second direction X intersect, and the orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is located in the orthographic projection on the substrate 1 of the gap between the light emitting units 10 arranged along the first direction Y and adjacent to each other. The orthographic projection of the first opening 61 and the first via 51 on the substrate 1 is arranged in the orthographic projection on the substrate 1 of the gap between the light emitting units 10 adjacent to each other with a larger gap, which is beneficial to improve the pixel aperture ratio of the display panel, so as to improve the display effect of the display panel.

[0230] In some possible implementation manners, referring to FIGS. 23-26 and the like, the present application further provides a display panel, which comprises a substrate 1, a driving circuit layer 2, an insulating layer 5, an inorganic layer 6 and a light emitting unit 10.

[0231] The driving circuit layer 2 is located on the substrate 1, and the insulating layer 5 is located on the side of the driving circuit layer 2 away from the substrate 1. Along the thickness direction Z of the substrate 1, the first via 51 penetrating the insulating layer 5 is arranged on the insulating layer 5.

[0232] The inorganic layer 6 is located on the side of the insulating layer 5 away from the substrate 1, and the orthographic projection of the inorganic layer 6 on the substrate 1 at least partially overlaps the orthographic projection of the insulating layer 5 on the substrate 1. Along the thickness direction Z of the substrate 1, the first opening 61 penetrating the inorganic layer 6 is arranged on the inorganic layer 6, and the orthographic projection of the first opening 61 on the substrate 1 overlaps the orthographic projection of the first via 51 on the substrate 1. In this embodiment, the second via 62 can not be arranged. Part of the first opening 61 can play the role of the second via 62. For example, the first opening 61 is in communication with the first via 51.

[0233] The light emitting unit 10 is located on the side of the inorganic layer 6 away from the substrate 1, and the light emitting unit 10 comprises a first electrode 7. The first electrode 7 is electrically connected to the driving circuit layer 2 through the first opening 61 and the first via 51. The part of the orthographic projection of the first opening 61 on the substrate 1 that overlaps the orthographic projection of the first via 51 on the substrate 1 is located outside the orthographic projection of the first electrode 7 on the substrate 1.

[0234] The inorganic layer 6 has the function of blocking water vapor. In this embodiment, the inorganic layer 6 is arranged between the light emitting unit 10 and the insulating layer 5. On the one hand, the inorganic layer 6 can block the water vapor in the external environment from entering the insulating layer 5. On the other hand, the inorganic layer 6 can block the water vapor in the insulating layer 5 from invading the light emitting material layer of the light emitting unit 10, so as to reduce the risk of dark spots of the light emitting unit 10 caused by the water vapor in the insulating layer 5, and further improve the display effect of the display panel.

[0235] If the inorganic layer 6 completely covers the insulating layer 5, the water vapor in the insulating layer 5 cannot be discharged in the subsequent preparation process of the display panel, and when the water vapor in the insulating layer 5 reaches a certain amount, the inorganic layer 6 is prone to collapse, thereby affecting the stability of the inorganic layer 6 and ultimately affecting the effect of the inorganic layer 6 on blocking the water vapor in the insulating layer 5 from entering the light emitting unit 10.

[0236] In the embodiment, since the first opening 61 is arranged on the inorganic layer 6, the water vapor in the insulating layer 5 can be discharged in time in the subsequent preparation process of the display panel, so that the inorganic layer 6 is not prone to collapse. Since the orthographic projection of the first opening 61 on the substrate 1 is located outside the orthographic projection of the light emitting unit 10 on the substrate 1, the gas discharged from the first opening 61 is not prone to enter the light emitting unit 10, so that the light emitting unit 10 is not prone to produce dark spots.

[0237] The embodiment can be combined with part or all of the features in the above-mentioned embodiments, which will not be described here.

[0238] As shown in FIGS. 1-26, in some possible embodiments, the present application further provides a display panel, which comprises a substrate 1, an inorganic layer 6 located on one side of the substrate 1, and a first opening 61 penetrating through the inorganic layer 6 in the thickness direction of the substrate 1, a pixel definition layer 3 located on the side of the inorganic layer 6 away from the substrate 1, and the pixel definition layer 3 encloses a plurality of pixel openings 31, and the orthographic projection of the first via 51 on the substrate 1 and the orthographic projection of the pixel opening on the substrate are staggered. Optionally, the orthographic projection of the first via 51 on the substrate 1 is located within the orthographic projection of the pixel definition layer 3 between adjacent pixel openings 31 on the substrate 1.

[0239] In the embodiment, the first via 51 and the pixel opening 31 are staggered, the first via 51 does not affect the normal light emission of the light emitting unit 10 in the pixel opening 31, and the first via 51 is located within the orthographic projection of the pixel definition layer 3 between adjacent pixel openings 31 on the substrate 1, which can improve the pixel opening rate of the display panel, thereby improving the display effect of the display panel.

[0240] In some possible implementation manners, the first openings 61 are in communication with each other to divide the inorganic layers 6 into a plurality of body portions 63 distributed at intervals; the display panel further comprises a driving circuit layer 2 located on the substrate 1; the light emitting unit 10 comprises a first electrode 7 electrically connected with the driving circuit layer 2, wherein a projection of the first electrode 7 on the substrate 1 is located within a projection of the body portion 63 on the substrate 1. Optionally, a part of the first electrode 7 corresponding to the pixel opening 31 can be located within the projection of the body portion 63 on the substrate 1.

[0241] In these optional implementation manners, the first openings 61 are in communication with each other to divide the inorganic layers 6 into a plurality of body portions 63 distributed at intervals; the first electrode 7 is located within the projection of the body portion 63 on the substrate 1, so that the body portion 63 can provide protection for the first electrode 7.

[0242] Optionally, the projection of the first electrode 7 on the substrate 1 is smaller than the projection of the body portion 63 on the substrate 1, and a distance between an edge of the projection of the first electrode 7 on the substrate 1 and an edge of the projection of the body portion 63 on the substrate 1 is greater than or equal to 2 μm. Optionally, a distance between an edge of the projection of the part of the first electrode 7 corresponding to the pixel opening 31 on the substrate 1 and an edge of the projection of the body portion 63 on the substrate 1 can be greater than or equal to 2 μm. In this way, the body portion 63 has a large enough distribution area to provide more perfect protection for the first electrode 7.

[0243] In some possible implementation manners, the present application further provides an electronic device comprising the display panel or comprising the display panel prepared by the preparation method of the display panel.

[0244] Any combination of the technical features in the above embodiments can be made, and to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.

[0245] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; an inorganic layer located on one side of the substrate, along the thickness direction of the substrate, the inorganic layer being provided with a first opening hole penetrating through the inorganic layer; an isolation structure located on the side of the inorganic layer away from the substrate, the isolation structure enclosing to form an isolation opening; the orthographic projection of the first opening hole on the substrate is at least partially located within the orthographic projection of the isolation structure on the substrate.

2. The display panel of claim 1, wherein, Further comprising: a driving circuit layer located on the substrate; an insulating layer located on the side of the driving circuit layer away from the substrate, the inorganic layer being located on the side of the insulating layer away from the substrate, along the thickness direction of the substrate, the insulating layer being provided with a first via penetrating through the insulating layer; a light emitting unit comprising a first electrode, the first electrode being electrically connected with the driving circuit layer through the first via.

3. The display panel of claim 2, wherein, The first via is in communication with the first opening hole, the first electrode is electrically connected with the driving circuit layer through the first opening hole and the first via, the orthographic projection of the first via on the substrate is located within the orthographic projection of the first opening hole on the substrate, and the area of the orthographic projection of the first via on the substrate is smaller than the area of the orthographic projection of the first opening hole on the substrate.

4. The display panel of claim 3, wherein, Part of the orthographic projection of the first opening hole on the substrate is located outside the orthographic projection of the first electrode on the substrate; the center of the orthographic projection of the first opening hole on the substrate is spaced apart from the center of the orthographic projection of the first via on the substrate; Alternatively, the orthographic projection of the first opening hole on the substrate is within the orthographic projection of the first electrode on the substrate, and the orthographic projection of the first via on the substrate is within the orthographic projection of the first electrode on the substrate.

5. The display panel of claim 3, wherein, The orthographic projection of the first opening hole on the substrate comprises oppositely arranged first and second edges, the orthographic projection of the side of the first via away from the substrate on the substrate comprises oppositely arranged third and fourth edges, the first, third, fourth and second edges are arranged in sequence, and the third edge is located on the side of the fourth edge away from the light emitting unit corresponding to the first via, wherein the minimum distance between the first edge and the third edge is greater than the minimum distance between the second edge and the fourth edge; Alternatively, the minimum distance between the first edge and the third edge is greater than or equal to 2μm and less than or equal to 10μm; Or, the minimum distance between the second edge and the fourth edge is greater than or equal to 0.3μm and less than or equal to 5μm.

6. The display panel of claim 5, wherein, The first edge is located outside the orthographic projection of the first electrode on the substrate; Or, the second edge is located within the orthographic projection of the first electrode on the substrate; Or, at least part of the edge of the orthographic projection of the first electrode on the substrate is located within the orthographic projection range of the first opening hole on the substrate.

7. The display panel of claim 6, wherein, A minimum distance between a normal projection of a portion of the first electrode located in the first opening towards a side of the first edge on the substrate and the first edge is greater than or equal to 2 μm and less than or equal to 8 μm.

8. The display panel of claim 2, wherein, The first via is arranged apart from a normal projection of the first opening on the substrate.

9. The display panel of claim 8, wherein, The inorganic layer is provided with a second via penetrating the inorganic layer, the first via and the second via are in communication, a normal projection of the first electrode on the substrate is located outside a normal projection of the first opening on the substrate, and the first electrode is electrically connected to the driving circuit layer through the second via and the first via in sequence.

10. The display panel of claim 9, wherein, A center of a normal projection of the second via on the substrate coincides with a center of a normal projection of the first via on the substrate.

11. The display panel of claim 9, wherein, A minimum distance between an edge of a normal projection of the first via on the substrate and an edge of a normal projection of the first opening on the substrate is greater than or equal to 5 μm and less than or equal to 10 μm.

12. The display panel of claim 2, wherein, The isolation structure includes a first isolation unit and a second isolation unit, a width of a normal projection of the first isolation unit on the substrate is greater than a width of a normal projection of the second isolation unit on the substrate, a normal projection of the first opening on the substrate is located within a normal projection of the first isolation unit on the substrate, and a normal projection of the first opening on the substrate is located outside a normal projection of the second isolation unit on the substrate.

13. The display panel of claim 12, wherein, The first isolation unit and the second isolation unit are arranged around the same isolation opening, and the first isolation unit and the second isolation unit are located on different sides of the isolation opening, the first isolation unit extends along a second direction, and the second isolation unit extends along a first direction. Alternatively, the first isolation unit and the second isolation unit are arranged around different isolation openings. Alternatively, a normal projection of the isolation structure on the substrate is in a grid shape, and the first isolation unit is located at an intersection position of the isolation structure extending in different directions.

14. The display panel of claim 13, wherein, An extension length of the first isolation unit in the second direction is greater than an extension length of the second isolation unit in the first direction.

15. The display panel of claim 13, wherein, An included angle between a line connecting a center of a normal projection of the first via on the substrate and a center of a normal projection of the first opening on the substrate and the second direction is greater than or equal to 0 and less than 90°. Alternatively, an included angle between a line connecting a center of a normal projection of the first via on the substrate and a center of a normal projection of the first opening on the substrate and the second direction is greater than or equal to 0 and less than or equal to 30°. Alternatively, an included angle between a line connecting a center of a normal projection of the first via on the substrate and a center of a normal projection of the first opening on the substrate and the second direction is equal to 0. The first direction is perpendicular to the second direction.

16. The display panel of claim 2, wherein, The isolation structure includes a third isolation unit and a fourth isolation unit, a length of a normal projection of the third isolation unit on the substrate is greater than a length of a normal projection of the fourth isolation unit on the substrate, a normal projection of the first opening on the substrate is located within the normal projection of the third isolation unit on the substrate, and a normal projection of the first opening on the substrate is located outside the normal projection of the fourth isolation unit on the substrate.

17. The display panel of claim 16, wherein, The inorganic layer further includes a second via hole penetrating the inorganic layer along a thickness direction of the substrate, a normal projection of the second via hole on the substrate is located within the normal projection of the fourth isolation unit on the substrate, and the normal projection of the second via hole on the substrate overlaps the normal projection of the first via hole on the substrate.

18. The display panel of any one of claim 2, wherein, The normal projections of the first opening and the first via hole on the substrate are both located within a normal projection of a side of the isolation structure facing the substrate on the substrate, An edge of a normal projection of a side of the first opening away from the substrate has a distance greater than 0 and less than or equal to 10 μm from a normal projection of a side of a sidewall of the isolation structure facing the isolation opening close to the substrate on the substrate.

19. The display panel of any one of claim 2, wherein, The display panel includes a display area and a non-display area, and further includes a pixel definition layer between the inorganic layer and the isolation structure, a normal projection of the isolation structure on the substrate is located within a range of a normal projection of the pixel definition layer on the substrate, the pixel definition layer further extends to the non-display area, the pixel definition layer defines a plurality of pixel openings in the display area, and the pixel openings are in communication with the isolation openings; at least part of the light emitting unit is located in the pixel opening, and the normal projection of the first opening on the substrate and the normal projection of the pixel opening on the substrate are arranged staggeredly.

20. The display panel of claim 19, wherein, Along the thickness direction of the substrate, a third opening penetrating the pixel definition layer is arranged on the pixel definition layer in the non-display area, and the inorganic layer extends from the display area to the non-display area, and a normal projection of the inorganic layer on the substrate covers a normal projection of the third opening on the substrate.

21. The display panel of any one of claims 1, wherein A normal projection of the inorganic layer on the substrate is in a mesh shape, and a plurality of the first openings are distributed at intervals from each other; Alternatively, a plurality of the first openings are in communication with each other to separate the inorganic layer into a plurality of body portions distributed at intervals from each other.

22. The display panel of any one of claims 1, wherein, The display panel has a display area, a plurality of the first openings are located in the display area, and a proportion of a sum of areas of normal projections of the first openings on the substrate to an area of the display area is 5% to 20%; Alternatively, a recessed portion is formed on a surface of the isolation structure away from the substrate, the recessed portion is recessed towards the substrate, and a normal projection of the recessed portion on the substrate and a normal projection of the first opening on the substrate at least partially overlap.

23. The display panel of any one of claims 1, wherein, The isolation structure comprises a first isolation portion and a second isolation portion arranged in a stacked manner away from the substrate, the second isolation portion is arranged protruding towards the isolation opening relative to the first isolation portion, and a projection of the first opening on the substrate is located within a projection of the first isolation portion on the substrate.

24. The display panel of claim 23, wherein, The first isolation portion comprises a first surface facing the substrate and a second surface facing away from the substrate, and a smaller one of a projection area of the first surface and a projection area of the second surface on the substrate is greater than or equal to 1 μm from an edge of a projection of the first opening on the substrate.

25. The display panel of any one of claims 2, wherein, The display panel further comprises a signal trace, and a projection of the signal trace on the substrate and a projection of the first opening on the substrate at least partially overlap. The display panel comprises a touch electrode, the touch electrode comprises a touch trace, the signal trace comprises the touch trace, or the substrate is provided with an array trace, and the signal trace comprises the array trace.

26. The display panel of claim 25, wherein, An extension direction of the signal trace and an extension direction of the first opening intersect. Or, a line width of the touch trace is less than a width of the first opening.

27. A display panel comprising: The display panel comprises: a substrate; an inorganic layer located on one side of the substrate, and along a thickness direction of the substrate, the inorganic layer is provided with a first opening penetrating through the inorganic layer; a pixel definition layer located on a side of the inorganic layer away from the substrate, and the pixel definition layer encloses to form a plurality of pixel openings; a projection of the first opening on the substrate and a projection of the pixel opening on the substrate are arranged staggeredly.

28. The display panel of claim 27, wherein: a plurality of the first openings are in communication with each other to separate the inorganic layer into a plurality of body portions distributed at intervals; the display panel further comprises a driving circuit layer located on the substrate; a light emitting unit comprises a first electrode, and the first electrode is electrically connected with the driving circuit layer, wherein a projection of the first electrode on the substrate is located within a projection of the body portion on the substrate.

29. The display panel of claim 28, wherein, A projection area of the first electrode on the substrate is less than a projection of the body portion on the substrate, and a distance between an edge of the projection of the first electrode on the substrate and an edge of the projection of the body portion on the substrate is greater than or equal to 2 μm.

30. An electronic device, comprising: The electronic device comprises the display panel of any one of claims 1.

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