Display panel, manufacturing method thereof and display device

Abstract

The invention provides a display panel, a manufacturing method thereof and a display device, relates to the technical field of display, and is used for realizing both high brightness and low reflectivity of the display panel. The display panel comprises an array substrate which comprises a substrate and an array layer; the light-emitting elements are located on one side of the array substrate, and each light-emitting element comprises a light-emitting surface far away from one side of the substrate; the first film layer is located on one side of the array substrate and comprises a plurality of first parts, each first part comprises a first sub-part, and the first sub-part at least covers the light emitting surface of the light emitting element; the shielding layer is located on one side of the array substrate and comprises a plurality of first openings, at least part of the first openings are overlapped with the light-emitting elements in the direction perpendicular to the plane where the substrate is located, the shielding layer further comprises first shielding parts, and the first shielding parts are adjacent to the first openings.

Description

TECHNICAL FIELD

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

[0002] A light emitting diode (LED) display panel includes an array substrate and an LED. The LED is placed above the array substrate by means of massive transfer and is electrically connected with a pad in the array substrate. A plurality of metal traces are provided in the array substrate. The metal traces will generate strong reflected light under the irradiation of the LED and ambient light, resulting in deterioration of display quality. Therefore, a shielding layer is further formed on one side of the array substrate to shield the metal traces in the array substrate and reduce the reflectivity of the panel.

[0003] However, in the prior art, it is difficult for the display panel to well balance high brightness and low reflectivity, which limits the further optimization of the performance of the display panel. SUMMARY

[0004] Embodiments of the present application provide a display panel, a manufacturing method thereof and a display device, for balancing high brightness and low reflectivity of the display panel.

[0005] In a first aspect, embodiments of the present application provide a display panel, comprising:

[0006] An array substrate, comprising a substrate and an array layer;

[0007] A plurality of light emitting elements located on one side of the array substrate, the light emitting elements comprising a light emitting surface away from the substrate;

[0008] A first film layer located on one side of the array substrate, the first film layer comprising a plurality of first portions, the first portions comprising a first sub-portion, the first sub-portion covering at least the light emitting surface of the light emitting elements;

[0009] A shielding layer located on one side of the array substrate, the shielding layer comprising a plurality of first openings, at least part of the first openings overlapping with the light emitting elements in a direction perpendicular to the plane on which the substrate is located, the shielding layer further comprising a first shielding portion adjacent to the first openings

[0010] In a second aspect, based on the same inventive concept, embodiments of the present application further provide a manufacturing method of a display panel, for forming the above-mentioned display panel, comprising:

[0011] Forming an array substrate, the array substrate comprising a substrate and an array layer;

[0012] A plurality of light emitting elements are formed on the array substrate side, the light emitting elements including a light emitting surface away from the substrate side;

[0013] A first film layer is formed, the first film layer including a plurality of first portions, the first portions including a first sub-portion covering the light emitting surface of the light emitting element;

[0014] After the first film layer is formed, a shielding layer is formed, the shielding layer including a plurality of first openings, at least part of the first openings overlapping the light emitting element in a direction perpendicular to the plane on which the substrate lies, the shielding layer further including a first shielding portion adjacent to the first opening.

[0015] In a third aspect, based on the same inventive concept, the present application provides a display device comprising the display panel.

[0016] The technical scheme provided by the embodiments of the present application has the following beneficial effects:

[0017] In the technical scheme provided by the embodiments of the present application, after the light emitting element is transferred to the array substrate, the light emitting surface of the light emitting element can be first filled and protected by the first sub-portion, and when the light shielding material is deposited to form the shielding layer, the light shielding material will not come into contact with the light emitting surface, and thus will not be left in the hole or gap of the light emitting surface to cause brightness loss. Moreover, the shielding layer is set later than the light emitting element, and when the light shielding material is deposited, the light shielding material will flow directly into contact with the first sub-portion or the light emitting element, without the need to reserve a larger opening due to the exposure alignment requirement considering the transfer accuracy of the light emitting element. The first shielding portion can have a larger shielding area, so that the display panel can achieve high brightness and low reflectivity. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 A brightness comparison schematic diagram of the light emitting element before and after the ashing treatment provided by the embodiments of the present application;

[0020] Figure 2 A structural schematic diagram of the display panel provided by the embodiments of the present application;

[0021] Figure 3 A top view of the display panel provided by the embodiments of the present application;

[0022] Figure 4 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0023] Figure 5 Another structural schematic view of the first sub-portion provided by the embodiment of the present application;

[0024] Figure 6 Another structural schematic view of the first sub-portion provided by the embodiment of the present application;

[0025] Figure 7 Another structural schematic view of the first sub-portion and the light emitting element provided by the embodiment of the present application;

[0026] Figure 8 Another structural schematic view of the first sub-portion provided by the embodiment of the present application;

[0027] Figure 9 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0028] Figure 10 Another structural schematic view of the first sub-portion and the light emitting element provided by the embodiment of the present application;

[0029] Figure 11 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0030] Figure 12 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0031] Figure 13 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0032] Figure 14 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0033] Figure 15 Another structural schematic view of the first sub-portion provided by the embodiment of the present application;

[0034] Figure 16 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0035] Figure 17 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0036] Figure 18 Another structural schematic view of the display panel provided by the embodiment of the present application;

[0037] Figure 19Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0038] Figure 20 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0039] Figure 21 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0040] Figure 22 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0041] Figure 23 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0042] Figure 24 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0043] Figure 25 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0044] Figure 26 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0045] Figure 27 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0046] Figure 28 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0047] Figure 29 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0048] Figure 30 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0049] Figure 31 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0050] Figure 32 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0051] Figure 33 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0052] Figure 34 Another structural schematic view of the display panel provided by the embodiment of the present application is shown in FIG. 6;

[0053] Figure 35 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 4.

[0054] Figure 36 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 4.

[0055] Figure 37 A flow chart of a manufacturing method of a display panel provided by an embodiment of the present application is shown in FIG. 5.

[0056] Figure 38 Another flow chart of a manufacturing method of a display panel provided by an embodiment of the present application is shown in FIG. 6.

[0057] Figure 39 Another flow chart of a manufacturing method of a display panel provided by an embodiment of the present application is shown in FIG. 6.

[0058] Figure 40 A structural schematic diagram of a display device provided by an embodiment of the present application is shown in FIG. 7. DETAILED DESCRIPTION

[0059] In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0060] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0061] The terms used in the embodiments of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0062] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0063] Before describing the technical solutions provided by the embodiments of the present application, the present application first describes the problems existing in the related art.

[0064] The display panel includes an array substrate, LEDs located on one side of the array substrate, and a shielding layer located on the other side of the array substrate. The shielding layer includes openings that expose the LEDs and is used to shield the metal traces in the array substrate to reduce the reflectivity of the display panel.

[0065] During the research process, the inventors found that after forming the array substrate, if a shielding layer is first formed on one side of the array substrate and then the LED is transferred to the top of the array substrate, considering the transfer accuracy of the LED and the need for exposure alignment, the coverage area of ​​the shielding layer is limited, resulting in the inability to minimize the reflectivity.

[0066] If the shielding layer is formed after the LED is transferred, although the fluidity of the shading material can be used to make the shielding layer have a larger coverage area, in the process of forming the shielding layer, a whole layer of shading material is first deposited, and then an opening exposing the light-emitting element is formed through an etching process. When the shading material is deposited, the shading material will cover the light-emitting surface of the LED, and then when the shading material above the LED is subsequently removed, the shading material may remain. For example, in order to optimize the light output of the LED, the light-emitting surface of the LED may have microstructures such as columns, holes, and hemispherical shapes. The shading material will remain in the holes or gaps on the light-emitting surface of the LED, resulting in a loss of LED brightness, and then a significant decrease in the brightness of the display screen. In response to this problem, in one solution, after the shielding layer is formed, the shading material remaining above the LED can be removed by ashing treatment, but this method is difficult to restore the brightness 100%, and the ashing treatment may also damage the film structure of the non-display area. In this regard, the inventors have verified that Figure 1 As shown, Figure 1 A schematic diagram of the brightness comparison of the light-emitting element before and after the ashing treatment provided in an embodiment of the present invention, wherein curve A is the light output brightness of the LED when no shielding layer is formed, curve B is the light output brightness of the LED when a shielding layer is formed but no ashing treatment is performed, and curve C is the light output brightness of the LED after the shielding layer is formed and the ashing treatment is performed. It can be seen that after the ashing treatment, the light output brightness of the LED cannot be completely restored to the brightness when no shielding layer is formed.

[0067] In this regard, an embodiment of the present invention provides a display panel, such as Figure 2 and Figure 3 As shown, Figure 2 A schematic structural diagram of a display panel provided by an embodiment of the present invention is shown in FIG. Figure 3 This is a top view of a display panel provided by an embodiment of the present invention. The display panel includes an array substrate 1. The array substrate 1 includes a substrate 2 and an array layer 3. The array layer 3 includes various structures such as pixel circuits, signal lines, and pads.

[0068] The display panel further comprises a plurality of light emitting elements 4 located on one side of the array substrate 1. The light emitting elements 4 are LEDs, such as mini LEDs or micro LEDs, etc. The light emitting elements 4 comprise a light emitting surface 5 away from the substrate 2. The light emitting surface 5 can comprise microstructures such as protrusions or recesses, which are used to change the propagation path of light, break the total reflection condition, and enable more light to be emitted, thereby enabling the light emitting elements 4 to have higher light emitting efficiency.

[0069] The display panel further comprises a first film layer 6 located on one side of the array substrate 1. The first film layer 6 comprises a plurality of first portions 7, and the first portions 7 comprise a first sub-portion 8. The first sub-portion 8 covers at least the light emitting surface 5 of the light emitting element 4.

[0070] In the present embodiment, the first sub-portion 8 is in contact with the light emitting surface 5 of the light emitting element 4.

[0071] The display panel further comprises a shielding layer 9 located on one side of the array substrate 1. The shielding layer 9 comprises a plurality of first openings 10, and at least part of the first openings 10 overlap the light emitting element 4 in a direction perpendicular to the plane in which the substrate 2 is located. The shielding layer 9 further comprises a first shielding portion 11 adjacent to the first opening 10.

[0072] In the present embodiment, the first shielding portion 11 is adjacent to the first opening 10, i.e., the sidewall of the first shielding portion 11 is multiplexed with the sidewall of the first opening 10. The plurality of first openings 10 can be independent of each other, and the first shielding portion 11 surrounds at least the periphery of the first opening 10.

[0073] In the present embodiment, after the array substrate 1 is formed, the light emitting element 4 is first transferred above the array substrate 1, then the first film layer 6 is formed, and then the shielding layer 9 is formed. In combination with Figure 4 The light emitting element 4 comprises a main body portion 12 and two electrodes 13. After the light emitting element 4 is transferred above the array substrate 1, the first film layer 6 is first formed by coating a transparent material. Since the transparent material has a certain flowability, part of the transparent material will flow into the gap between the main body portion 12 and the array substrate 1 and eventually remain. Therefore, in the present embodiment, part of the first sub-portion 8 is located in the gap between the main body portion 12 and the array substrate 1.

[0074] In the technical solution provided in the embodiments of the present application, after the light emitting element 4 is transferred to the array substrate 1, the light emitting surface 5 of the light emitting element 4 can be first filled and protected by the first sub portion 8, and then when the light shielding material is deposited to form the shielding layer 9, the light shielding material will not contact the light emitting surface 5, and thus will not be left in the hole or the gap of the light emitting surface 5 to cause brightness loss. Moreover, the shielding layer 9 is arranged later than the light emitting element 4, and when the light shielding material is deposited, the light shielding material will directly flow to the contact with the first sub portion 8 or the light emitting element 4, without the need to reserve a larger opening for the exposure alignment and other requirements considering the transfer accuracy of the light emitting element. The first shielding portion 11 can have a larger shielding area, and thus the display panel can achieve high brightness and low reflectivity.

[0075] The first film layer 6 comprises a transparent material, and the transmittance of the transparent material can be greater than 97%, so that the light emitted by the light emitting element 4 can be almost completely transmitted through the first sub portion 8. Moreover, to optimize the light transmission, the refractive index of the material of the first film layer 6 can be between the refractive index of the light emitting element 4 and the refractive index of the film layer (such as the encapsulation layer) adjacent to the first film layer 6.

[0076] The shielding layer 9 comprises a light shielding material, such as a photoresist mixed with black pigment, polyimide and the like. Moreover, to make the shielding layer 9 have better light shielding performance, the optical density (OD) value of the shielding layer 9 can be greater than or equal to 1.0.

[0077] In a feasible implementation manner, referring again to Figure 2 The first film layer 6 further comprises a second opening 14, and the second opening 14 at least partially surrounds the four sides of the first portion 7, and the second opening 14 is spaced between the adjacent first portions 7.

[0078] In this structure, the second opening 14 can be in a mesh shape in the display area, and the plurality of first portions 7 can be independent of each other, one first sub portion 8 corresponds to one light emitting element 4, and the first sub portion 8 covers the light emitting surface 5 of the corresponding light emitting element 4.

[0079] The first sub portion 8 comprises a first side surface 15, and along the direction parallel to the plane of the substrate 2, the first side surface 15 overlaps the light emitting element 4, and along the direction away from the substrate 2, the first side surface 15 is inclined away from the corresponding light emitting element 4. For example, the first sub portion 8 is in an inverted trapezoidal shape. In the first sub portion 8, the included angle between the first side surface 15 and the upper surface on the side away from the substrate 2 is less than 90°, and / or along the direction away from the substrate 2, the distance between the opposite two side surfaces of the first sub portion 8 in the same direction increases.

[0080] The first shielding part 11 is located at least in the second opening 14, and the distance between the surface of the first shielding part 11 far away from the substrate 2 and the substrate 2 is smaller than the distance between the surface of the first sub part 8 far away from the substrate 2 and the substrate 2, that is, the upper surface of the first shielding part 11 is lower than the upper surface of the first sub part 8.

[0081] In this arrangement, the first sub parts 8 are independent of each other, and the first sub part 8 can be, for example, in the shape of an inverted trapezoid. When the light shielding material is deposited to form the shielding layer 9, the light shielding material has a high solvent ratio, and the light shielding material has high thermal fluidity when it is post-baked. Therefore, the light shielding material has a certain amount of overlap with the inverted trapezoidal lower side of the first sub part 8 in the direction perpendicular to the substrate 2, so that the coverage range of the first shielding part 11 on the array substrate 1 is limited by the first side 15 or the light emitting element 4 of the first sub part 8.

[0082] For example, referring to Figure 2 In the second opening 14, the light shielding material flows to contact the first side 15, and the shielding area of the first shielding part 11 is at least limited by the first side 15. The bottom edge of the first side 15 is inclined towards the light emitting element 4, that is, the bottom edge of the first side 15 is closer to the light emitting element 4 than the top edge of the first side 15, so as to help the first shielding part 11 to have a larger shielding area.

[0083] Alternatively, referring to Figure 9 In the mass transfer process, some light emitting elements 4-1 can be offset. In the above arrangement, if some light emitting elements 4 are offset so that at least one side of the light emitting element 4 is exposed to the first sub part 8, the light shielding material will flow to contact the light emitting element 4 during deposition of the light shielding material, so that the first shielding part 11 has a large shielding area on the side, which can cover the bottom metal to a greater extent.

[0084] Furthermore, in the direction away from the substrate 2, the first side 15 is inclined away from the corresponding light emitting element 4, and the first side 15 can also improve the climbing of the light shielding material along the sidewall of the first sub part 8, so as to avoid the light shielding material from being left on the upper surface of the first sub part 8.

[0085] In addition, the second opening 14 is arranged between adjacent first sub parts 8, and the first shielding part 11 is located in the second opening 14, which is more downward. In addition, the upper surface of the first shielding part 11 is lower than the upper surface of the first sub part 8, so as to avoid the first shielding part 11 from excessively shielding the lateral light of the light emitting element 4 and causing loss of viewing angle brightness.

[0086] The first sub part 8 can include a plurality of first sides 15, for example, the four sides of the first sub part 8 can all be the first side 15.

[0087] In a possible implementation, as shown in Figure 4 Figure 4 In another structure of the display panel provided by the embodiment of the present application, the film thickness k1 of the first shielding part 11 is less than or equal to 5 μm. In this case, the first shielding part 11 is thinner, and the light emitted from the side of the light emitting element 4 can be further prevented from being excessively shielded by the first shielding part 11.

[0088] In addition, the light emitting element 4 includes a quantum well layer 16. More specifically, the main body part 12 of the light emitting element 4 includes an n-type semiconductor layer, the quantum well layer 16 and a p-type semiconductor layer. The n-type semiconductor layer is used to provide free electrons, and the p-type semiconductor layer is used to provide holes. The electrons and the holes are combined in the quantum well layer 16 to release energy in the form of photons, thereby generating the light emitting phenomenon.

[0089] In this case, the distance between the surface of the quantum well layer 16 close to the substrate 2 and the substrate 2 is greater than the distance between the surface of the first shielding part 11 away from the substrate 2 and the substrate 2. That is, the upper surface of the first shielding part 11 is lower than the lower surface of the quantum well layer 16. In the direction parallel to the plane in which the substrate 2 is located, the first shielding part 11 does not overlap the quantum well layer 16, and thus the light emitted from the side of the quantum well layer 16 is not shielded.

[0090] In a possible implementation, as shown in Figure 5 Figure 5 In another structure of the first sub part 8 provided by the embodiment of the present application, the light emitting element 4 includes a main body part 12 and an electrode 13. The main body part 12 includes a first sub main body part 17 and a second sub main body part 18 stacked in the direction perpendicular to the substrate 2, and the second sub main body part 18 is located between the first sub main body part 17 and the electrode 13. That is, the first sub main body part 17 can be regarded as the upper half of the main body part 12, and the second sub main body part 18 can be regarded as the lower half of the main body part 12.

[0091] In this case, the orthographic projection of the first side surface 15 on the first plane at least overlaps the orthographic projection of the second sub main body part 18 on the first plane. The first plane is perpendicular to the plane in which the substrate 2 is located. That is, in the direction parallel to the plane in which the substrate 2 is located, the first side surface 15 at least overlaps the lower half of the main body part 12.

[0092] The first shielding part 11 is in contact with the first side surface 15.

[0093] ​​In the structure, the bottom edge of the first side surface 15 can be directly in contact with the array substrate 1, and when the light shielding material is deposited, the light shielding material can fill the gap between the first side surface 15 and the array substrate 1. Since the bottom edge of the first side surface 15 is inclined towards the light emitting element 4, that is, the bottom edge of the first side surface 15 is closer to the light emitting element than the top edge of the first side surface 15, the first shielding portion 11 can have a larger shielding area.

[0094] Further, referring again to Figure 5 , the first sub-portion 8 includes a first top surface 19 located on the side of the light emitting element 4 away from the substrate 2, that is, the upper surface of the first sub-portion 8, wherein the first side surface 15 is connected to the first top surface 19.

[0095] In the structure, the orthographic projection of the first side surface 15 on the first plane also overlaps the orthographic projection of the first sub-main portion 17 on the first plane. The angle between the first side surface 15 and the first top surface 19 of the first sub-portion 8 can improve the problem of the light shielding material climbing along the first side surface 15, and avoid the light shielding material remaining on the first top surface 19.

[0096] Alternatively, as shown in Figure 6 , Figure 6 is another schematic view of the first sub-portion 8 provided by the embodiments of the present application, the first sub-portion 8 includes a first top surface 19 located on the side of the light emitting element 4 away from the substrate 2, and the first side surface 15 is connected to the first top surface 19 through a second side surface 20.

[0097] Among them, the inclination direction of the second side surface 20 and the first side surface 15 can be different, for example, in the direction away from the substrate 2, the first side surface 15 is inclined in the direction away from the corresponding light emitting element 4, and the second side surface 20 is inclined in the direction close to the corresponding light emitting element 4.

[0098] Due to the transfer accuracy of the light emitting element 4, the actual position of the light emitting element 4 can be deviated, and thus the relative position relationship between the light emitting surface 5 of the light emitting element 4 and the first top surface 19 of the first sub-portion 8 is changed from the preset condition. Therefore, in the embodiments of the present application, the size of the first top surface 19 can be set to be larger than the size of the light emitting surface 5, and a certain allowance is left for the deviation of the light emitting element 4, so that the light emitting element 4 can still ensure that the first top surface 19 can completely cover the light emitting surface 5 when the light emitting element 4 is deviated.

[0099] When the first side surface 15 is connected to the first top surface 19 through the second side surface 20, the distance between the first top surface 19 extending outwardly from the light emitting surface 5 and the inclination degree of the first side surface 15 have less mutual restriction, and the design of the two can be more flexible.

[0100] For example, referring again to Figure 6The second side surface 20 is inclined in a direction away from the substrate 2 and in a direction close to the corresponding light emitting element 4. In this embodiment, the first side surface 15 forms an angle a1 with the plane of the substrate 2, and the second side surface 20 forms an angle a2 with the plane of the substrate 2, where a2>a1.

[0101] In this embodiment, the second side surface 20 is inclined in a direction opposite to the first side surface 15, and the inclination of the second side surface 20 is smaller than that of the first side surface 15. On one hand, the first side surface 15 can have a larger inclination, and the bottom edge of the first side surface 15 is closer to the light emitting element 4, so that the first shielding part 11 has a larger shielding area. On the other hand, the second side surface 20 has a smaller inclination, which helps the first top surface 19 to extend out of the light emitting surface 5 by a sufficient distance, and leaves a larger allowance for the deviation of the light emitting element 4.

[0102] In combination with the above, Figure 6 and Figure 7 , Figure 7 Figure 1 shows a top view of the first sub-part 8 and the light emitting element 4 according to an embodiment of the present application. The first side surface 15 includes a first edge 21 close to the substrate 2, and the second side surface 20 includes a second edge 22 away from the substrate 2.

[0103] The main body part 12 includes a third side surface 23 close to the first side surface 15 and the second side surface 20, and the third side surface 23 includes a third edge 24 close to the substrate 2.

[0104] In this embodiment, the distance L1 between the orthogonal projection of the first edge 21 on the plane of the substrate 2 and the orthogonal projection of the third edge 24 on the plane of the substrate 2 is smaller than the distance L2 between the orthogonal projection of the second edge 22 on the plane of the substrate 2 and the orthogonal projection of the third edge 24 on the plane of the substrate 2.

[0105] Similar to the above analysis, in this embodiment, the smaller L1 means that the bottom edge of the first side surface 15 is closer to the light emitting element 4, and the first side surface 15 has a larger inclination, which helps the first shielding part 11 to have a larger shielding area. Meanwhile, the larger L2 means that the first top surface 19 can extend out of the light emitting surface 5 by a larger distance, which helps to leave a sufficient allowance for the deviation of the light emitting element 4.

[0106] In this embodiment, the distance between the orthogonal projection of the edge where the first side surface 15 and the second side surface 20 meet on the plane of the substrate 2 and the orthogonal projection of the third edge 24 on the plane of the substrate 2 is L, and the distance between the first shielding part 11 and the periphery of the light emitting element 4 is between 0 and L.

[0107] When the first sub-portion 8 comprises the first side surface 15 and the second side surface 20, the first sub-portion 8 forms a taper angle of an inverted trapezoid only at the bottom, which is more suitable for the case that the transparent material to be deposited is thin.

[0108] In addition, in the first sub-portion 8, the lower half comprising the first side surface 15 and the upper half comprising the second side surface 20 can be formed in the same patterning process, for example, by a large exposure amount and a long development time, or can be formed in two patterning processes respectively, and the two parts can be formed by the same transparent material or different transparent materials when they are formed in two patterning processes respectively.

[0109] In a feasible embodiment, as shown in Figure 8 , Figure 8 Fig. 4 is a schematic view of another structure of the first sub-portion 8 provided by an embodiment of the present application, the light emitting element 4 comprises a main body portion 12 and an electrode 13, the main body portion 12 comprises a first sub-main body portion 17 and a second sub-main body portion 18 stacked in the vertical direction of the substrate 2, and the second sub-main body portion 18 is located between the first sub-main body portion 17 and the electrode 13. That is, the first sub-main body portion 17 can be regarded as the upper half of the main body portion 12, and the second sub-main body portion 18 can be regarded as the lower half of the main body portion 12.

[0110] In the structure, the first side surface 15 is in contact with the first sub-main body portion 17, and the second side surface 20 is in contact with the second sub-main body portion 18. That is, the first side surface 15 only covers at least part of the side surface of the first sub-main body portion 17, and exposes the side surface of the second sub-main body portion 18.

[0111] The side surface of the second sub-main body portion 18 is in contact with the first shielding portion 11.

[0112] In the structure, the bottom edge of the first side surface 15 is relatively high, and when the light shielding material is deposited to form the shielding layer 9, the light shielding material will flow to directly contact the lower half of the light emitting element 4, the coverage area of the first shielding portion 11 can reach the maximum, and the anti-reflective performance of the display panel is more optimal.

[0113] In a feasible embodiment, referring to Figure 5 , Figure 6 and Figure 8 , the first sub-portion 8 comprises a first top surface 19 located on the side of the light emitting element 4 away from the substrate 2. In the first direction x, the length of the first top surface 19 is greater than the length of the light emitting surface 5, and the first direction x is parallel to the plane in which the substrate 2 is located.

[0114] The first top surface 19 is extended outwardly from the light emitting surface 5, which can leave a margin for the transfer precision of the light emitting element 4. Even if the light emitting element 4 is deviated, the first top surface 19 can still completely cover the light emitting surface 5, so that the first sub-portion 8 can fill and protect the light emitting surface 5, and prevent the shading material from being left on the light emitting surface 5.

[0115] The display panel includes light emitting elements 4 of multiple colors. In general, light emitting elements 4 of different colors are transferred to the array substrate 1 in batches. For example, in the mass transfer process, red light emitting elements are first transferred to the array substrate 1, then green light emitting elements are transferred to the array substrate 1, and finally blue light emitting elements are transferred to the array substrate 1. When light emitting elements of each color are transferred, the light emitting elements of this color may or may not be deviated.

[0116] In the display panel, light emitting elements 4 of at least one color may be deviated, and light emitting elements 4 of at least one color may not be deviated. For example, as shown in Figure 9 and Figure 10 , a structure of the display panel provided by an embodiment of the present application is shown in another top view, only the light emitting element 4-1 is deviated, and the light emitting element 4-2 and the light emitting element 4-3 are not deviated. Figure 9 Figure 10

[0117] Alternatively, referring to Figure 2 , light emitting elements 4 of each color may not be deviated.

[0118] Alternatively, light emitting elements 4 of each color may be deviated.

[0119] The following describes the case where the light emitting element 4 is deviated:

[0120] In a feasible implementation, in combination with Figure 9 and Figure 10 , the first top surface 19 includes a fourth edge 25 and a fifth edge 26 opposite in the first direction x.

[0121] The light emitting element 4 includes a main body portion 12 and an electrode 13. The main body portion 12 includes a third side surface 23 and a fourth side surface 27 opposite in the first direction x. The third side surface 23 is close to the fourth edge 25. The third side surface 23 includes a third edge 24 close to the substrate 2, and the fourth side surface 27 includes a sixth edge 28 close to the substrate 2.

[0122] ​​In which, in at least one light-emitting element 4 (4-1) and the corresponding first sub-portion 8 (8-1): the distance p1 between the orthographic projection of the fourth side 25 on the plane where the substrate 2 is located and the orthographic projection of the third side 24 on the plane where the substrate 2 is located is smaller than the distance p2 between the orthographic projection of the fifth side 26 on the plane where the substrate 2 is located and the orthographic projection of the sixth side 28 on the plane where the substrate 2 is located; the third side surface 23 contacts the first blocking portion 11 on one side thereof, the first side surface 15 includes a first sub-side surface 34, the first sub-side surface 34 is located on the side of the fourth side surface 27 away from the third side surface 23, and the first sub-side surface 34 contacts the first blocking portion 11 on one side thereof.

[0123] The aforementioned light-emitting element 4-1 can be considered to be offset in the first direction x. In this portion of the light-emitting element 4, along the first direction x, the distance p1 between the fourth edge 25 of the first top surface 19 of the first sub-section 8 and the third edge 24 of the third side surface 23 of the main body 12 is different from the distance p2 between the fifth edge 26 of the first top surface 19 of the first sub-section 8 and the sixth edge 28 of the fourth side surface 27 of the main body 12. In this case, in the main body 12, the fourth side surface 27 can be completely covered by the first sub-section 8, while at least a portion of the third side surface 23 is exposed by the first sub-section 8. Consequently, when the light-shielding material is deposited, the light-shielding material flows until it contacts the exposed portion of the third side surface 23, maximizing the shielding area of ​​the first shielding portion 11 on the side where the third side surface 23 is located.

[0124] Furthermore, if Figure 11 As shown, Figure 11 This is another structural diagram of a display panel provided by an embodiment of the present invention. The light emitting element 4 includes an electrode 13 . The electrode 13 includes an anode 29 and a cathode 30 . The third side surface 23 is close to the cathode 30 .

[0125] The array layer 3 includes a pad 50, a pixel circuit 33, and a negative power line PVEE. The pad 50 includes a first sub-pad 31 and a second sub-pad 32. The first sub-pad 31 is electrically connected to the pixel circuit 33 and the anode 29 of the light-emitting element 4, respectively. The second sub-pad 32 is electrically connected to the negative power line PVEE and the cathode 30 of the light-emitting element 4, respectively.

[0126] Typically, the negative power line PVEE can be located directly on the metal layer where the pad 50 is located. This metal layer is located in the array layer 3, which has a greater reflective effect on light. A portion of the negative power line PVEE can be directly reused as the second sub-pad 32. Alternatively, the negative power line PVEE and the second sub-pad 32 can be independent of each other and connected.

[0127] When the light emitting element 4 (4-1) is deviated, the light shielding material will flow to contact the third side surface 23 of the light emitting element 4 when the light shielding material is deposited, so that the first shielding part 11 has a larger shielding area on the side of the third side surface 23. By allowing the third side surface 23 to be close to the cathode 30, the first shielding part 11 can shield the negative power supply line PVEE to a greater extent, thereby effectively reducing the reflection of the negative power supply line PVEE.

[0128] The following describes a case where the light emitting element 4 is not deviated:

[0129] In a feasible implementation, in combination with Figure 9 and Figure 10 , the first top surface 19 includes a fourth edge 25 and a fifth edge 26 opposite in the first direction x.

[0130] The light emitting element 4 includes a main body part 12 and an electrode 13, the main body part 12 includes a third side surface 23 and a fourth side surface 27 opposite in the first direction x, the third side surface 23 is close to the fourth edge 25; wherein the third side surface 23 includes a third edge 24 close to the substrate 2, and the fourth side surface 27 includes a sixth edge 28 close to the substrate 2.

[0131] In at least one light emitting element 4 (4-2 and 4-3) and the first sub-part 8 (8-2 and 8-3) corresponding thereto: the distance p3 between the normal projection of the fourth edge 25 on the plane of the substrate 2 and the normal projection of the third edge 24 on the plane of the substrate 2 is equal to the distance p3 between the normal projection of the fifth edge 26 on the plane of the substrate 2 and the normal projection of the sixth edge 28 on the plane of the substrate 2; the first side surface 15 includes a first sub-side surface 34 and a second sub-side surface 35 opposite, the first sub-side surface 34 is located on the side of the fourth side surface 27 away from the third side surface 23, and the first sub-side surface 34 and the first shielding part 11 on one side thereof are in contact, and the second sub-side surface 35 and the first shielding part 11 on one side thereof are in contact.

[0132] The above light emitting element 4-2 and light emitting element 4-3 can be regarded as a light emitting element 4 that is not deviated. In this part of the light emitting element 4, along the first direction x, the distance p3 between the fourth edge 25 of the first top surface 19 in the first sub-part 8 and the third edge 24 of the third side surface 23 in the main body part 12 is the same as the distance p3 between the fifth edge 26 of the first top surface 19 in the first sub-part 8 and the sixth edge 28 of the fourth side surface 27 in the main body part 12. At this time, in the main body part 12, the third side surface 23 and the fourth side surface 27 can be completely covered by the first sub-part 8. Further, when the light shielding material is deposited, the light shielding material will flow to contact the third side surface 23 and the fourth side surface 27, the shielding condition of the first shielding part 11 on both sides of the light emitting element 4 is the same, and the antireflection degree is consistent.

[0133] In a feasible implementation, as Figure 12As shown in FIG. 1, Figure 12 As shown in FIG. 1,

[0134] The first sub-part 8 includes a first top surface 19 on the side of the light emitting element 4 away from the substrate 2, and the minimum distance between the first top surface 19 and the first insulating layer 36 is H, H≥11μm. At this time, the height of the first sub-part 8 can be adapted to various types of LEDs currently in use, and the first sub-part 8 can meet the requirement of covering the light emitting surface 5 of various light emitting elements 4.

[0135] And / or, the first side surface 15 has an included angle a3 with the plane on which the substrate 2 lies, a3≥105°. When H is constant, a3≥105°, the first side surface 15 has a large degree of inclination, and the first top surface 19 can extend outward from the light emitting surface 5 by a sufficient distance to meet the requirement of the displacement of the light emitting element 4 while ensuring that the first shielding part 11 has a large coverage area.

[0136] And / or, in the first direction x, the length of the first top surface 19 is greater than the length of the light emitting surface 5, and the difference between the two is AL, AL≥6μm, and the first direction x is parallel to the plane on which the substrate 2 lies. At this time, the first top surface 19 is wider than the light emitting surface 5 by a sufficient distance, and the first top surface 19 can still completely cover the light emitting surface 5 even when the light emitting element 4 is displaced.

[0137] Figure 12 In the embodiment, in the first direction x, the distances by which the two sides of the first top surface 19 extend outward from the light emitting surface 5 are represented by AL1 and AL2 respectively, and AL=AL1+AL2. When the light emitting element 4 is not displaced, AL1=AL2, AL1≥3μm, and AL2≥3μm. When the light emitting element 4 is displaced, AL1≠AL2, and further, AL1 and AL2 can satisfy: AL1<3μm and AL2>3μm, or AL1>3μm and AL2<3μm, or AL1>3μm and AL2>3μm.

[0138] In a feasible implementation manner, as shown in FIG. 1, Figure 13 and 17 As shown in FIG. 1, Figure 13 As shown in FIG. 1, Figure 14 As shown in FIG. 1,

[0139] The first subportion 8 comprises a first top surface 19 on the side of the light emitting element 4 away from the substrate 2, and the minimum distance between the first top surface 19 and the first insulating layer 36 is H. The first side surface 15 has an included angle a3 with the plane of the substrate 2, and a3 > 90°. In the first direction x, the length of the first top surface 19 is greater than the length of the light emitting surface 5, and the difference between them is AL, and the first direction x is parallel to the plane of the substrate 2.

[0140] The light emitting element 4 comprises a first light emitting element 37 and a second light emitting element 38.

[0141] Wherein, referring to Figure 13 , the heights of the first light emitting element 37 and the second light emitting element 38 are different, and the values of H of the first subportion 8 corresponding to the first light emitting element 37 and the second light emitting element 38 are the same.

[0142] The above design is to adapt to light emitting elements 4 of different heights by using first subportions 8 of uniform height. When designing the first subportion 8, only the height of the first subportion 8 needs to be designed to cover the light emitting surface 5 of the highest light emitting element 4. Thus, it is not necessary to separately design first subportions 8 of different heights for light emitting elements 4 of different heights, which greatly reduces the process complexity of the first film layer 6.

[0143] And / or, referring to Figure 14 , in the first direction x, the lengths of the light emitting surfaces 5 of the first light emitting element 37 and the second light emitting element 38 are different, and the values of a3 of the first subportion 8 corresponding to the first light emitting element 37 and the second light emitting element 38 are different.

[0144] And / or, in the first direction x, the lengths of the light emitting surfaces 5 of the first light emitting element 37 and the second light emitting element 38 are different, and the values of AL of the first subportion 8 corresponding to the first light emitting element 37 and the second light emitting element 38 are different.

[0145] The above design is to adapt to light emitting elements 4 of different widths by using first subportions 8 of different forms. Taking the case of the second light emitting element 38 being larger in size in the first direction x as an example. Since the second light emitting element 38 is larger in size, the offset distance when it is offset may be larger. Therefore, in the first direction x, a3 and / or AL of the first subportion 8 corresponding to the second light emitting element 38 can be designed to be larger, so that the first top surface 19 of this part of the first subportion 8 can be extended outward by a larger distance from the light emitting surface 5 of the second light emitting element 38, and better meet the offset requirement of the second light emitting element 38.

[0146] In one structure, the light emitting elements 4 include red light emitting elements, green light emitting elements and blue light emitting elements. In the first direction x, the length of the light emitting surface 5 of the red light emitting elements is greater than the length of the light emitting surface 5 of the green light emitting elements, and the length of the light emitting surface 5 of the red light emitting elements is greater than the length of the light emitting surface 5 of the blue light emitting elements. Correspondingly, the first sub-section 8 corresponding to the red light emitting elements has a greater α3 and / or ΔL.

[0147] In one possible implementation, as shown in Figure 15 , Figure 15 In one possible implementation, as shown in ,

[0148] In one possible implementation, as shown in Figures 16-18 , Figure 16 In one possible implementation, as shown in Figure 17 , Figure 18 In one possible implementation, as shown in ,

[0149] The first sub-section 8 includes a first side surface 15, which, in the direction away from the substrate 2, is inclined away from the corresponding light emitting element 4.

[0150] The first shielding section 11 is located at least in the second opening 14, and the surface of the first shielding section 11 away from the substrate 2 is recessed in the direction of the substrate 2.

[0151] In one structure, the proportion of solvent in the light shielding material is high, and the light shielding material has high thermal fluidity during post-baking. Therefore, when the light shielding material is deposited, the surface of the light shielding material may present a concave liquid surface in the shape of an inverted trapezoid, an inverted triangle, a semicircle or a semi-ellipse when the light shielding material flows and fills in the second opening 14.

[0152] Further, referring again to Figure 16 , the first shielding section 11 between adjacent first sections 7 includes a middle shielding section 37 and an edge shielding section 38 surrounding the middle shielding section 37, and the film thickness of the middle shielding section 37 is less than the film thickness of the edge shielding section 38.

[0153] The first sub-part 8 includes a first top surface 19 on the side of the light emitting element 4 away from the substrate 2, the first opening 10 exposes at least part of the first top surface 19, and the edge shielding part 38 overlaps the edge of the first top surface 19. At this time, the first shielding part 11 completely covers the first side surface 15, and the shielding degree of the first shielding part 11 is greater.

[0154] Further, referring again to Figure 16 , the first shielding part 11 between adjacent first parts 7 includes an intermediate shielding part 37 and an edge shielding part 38 surrounding the intermediate shielding part 37. The film thickness of the intermediate shielding part 37 is less than the film thickness of the edge shielding part 38.

[0155] When the upper surface of the first shielding part 11 is concave downward, the intermediate shielding part 37 is relatively thin. To ensure the light shielding effect of the intermediate shielding part 37, it can satisfy OD1xh1>1.0, where h1 is the film thickness of the intermediate shielding part 37, and OD1 is the OD value of the light shielding material per unit thickness.

[0156] It should be noted that when the film thickness of the intermediate shielding part 37 is not uniform at different positions, h1 can be the smallest film thickness of the intermediate shielding part 37.

[0157] In a feasible implementation mode, as Figure 19 shown, Figure 19 is another structural schematic diagram of the display panel provided by the embodiment of the present application. The first film layer 6 further includes a groove 39, and the groove 39 at least partially surrounds the four sides of the first part 7. The first part 7 is spaced apart from the first part 7 by the groove 39.

[0158] Different from the second opening 14 shown in Figure 2 , the second opening 14 penetrates the entire film thickness of the first film layer 6. The first film layer 6 has a through opening at the second opening 14, while the groove 39 only penetrates part of the film thickness of the first film layer 6. The first film layer 6 has a non-through groove at the groove 39.

[0159] The first film layer 6 further includes a groove 39. In another expression, the first film layer 6 further includes a second part 43, and the second part 43 at least partially surrounds the four sides of the first part 7. The first part 7 is in communication with the second part 43. The distance between the surface of the second part 43 away from the substrate 2 and the substrate 2 is less than the distance between the surface of the first part 7 away from the substrate 2 and the substrate 2, that is, the upper surface of the second part 43 is lower than the upper surface of the first part 7. The above-mentioned groove 39 is formed by the first part 7 and the second part 43, and the position of the groove 39 corresponds to the position of the second part 43.

[0160] The first sub-portion 8 includes a first side surface 15 . Along a direction away from the substrate 2 , the first side surface 15 is inclined toward a direction approaching the corresponding light-emitting element 4 .

[0161] The first blocking portion 11 is at least located in the groove 39 , and the distance between the surface of the first blocking portion 11 away from the substrate 2 and the substrate 2 is greater than or equal to the distance between the surface of the first sub-portion 8 away from the substrate 2 and the substrate 2 .

[0162] For example, see Figure 19 , the distance between the surface of the first shielding portion 11 away from the substrate 2 and the substrate 2 is equal to the distance between the surface of the first sub-portion 8 away from the substrate 2 and the substrate 2. Alternatively, see Figure 21 The distance between the surface of the first shielding portion 11 away from the substrate 2 and the substrate 2 is greater than the distance between the surface of the first sub-portion 8 away from the substrate 2 and the substrate 2 .

[0163] The first film layer 6 can be made of a transparent material with thermal fluidity, such as polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene (PS), polyethylene terephthalate (PET), or polybutylene terephthalate (PBT). During the flow of this material, grooves 39 are naturally formed between the light-emitting elements 4, simultaneously forming the inclined first side surfaces 15. This process requires only a relatively thin coating of the transparent material to cover the light-emitting surfaces 5 of the light-emitting elements 4.

[0164] The first shielding portion 11 is located relatively high within the groove 39. Setting the upper surface of the first shielding portion 11 to at least be flush with the upper surface of the first sub-portion 8 can reduce the size of the first opening 10 in the shielding layer 9, thereby increasing the coverage area of ​​the first shielding portion 11. For example, in one configuration, in the first direction x, the length of the first opening 10 approaches the length of the light-emitting surface 5 of the light-emitting element 4.

[0165] In addition, if Figure 20 As shown, Figure 20 This is another schematic diagram of the structure of a display panel provided by an embodiment of the present invention. In this structure, the first film layer 6 can cover the entire display area. The first film layer 6 does not need to be patterned in the display area, which can reduce the first film layer 6's dependence on high-precision exposure equipment. Furthermore, the shielding layer 9 can cover the area of ​​the display area except for the first opening 10.

[0166] Further, if Figure 21 As shown, Figure 21In another structure of the display panel provided by the embodiment of the present application, the first shielding part 11 comprises a first sub-shielding part 40 and a second sub-shielding part 41 arranged in a direction perpendicular to the substrate 2, the first sub-shielding part 40 is located in the groove 39, and the second sub-shielding part 41 is located on the side of the first sub-shielding part 40 away from the substrate 2.

[0167] The shielding layer 9 further comprises a plurality of third openings 42, the third openings 42 overlap the light-emitting elements 4 in a direction perpendicular to the plane in which the substrate 2 is located, and the second sub-shielding part 41 is adjacent to the third openings 42. That is, the sidewall of the second sub-shielding part 41 is multiplexed with the sidewall of the third openings 42.

[0168] In this arrangement, the first shielding part 11 as a whole protrudes from the groove 39, and the second sub-shielding part 41 protruding from the groove 39 can be used to absorb the large-angle light of the light-emitting elements 4, so as to avoid the large-angle light entering the glass cover plate to form total reflection, thereby improving the halo and other problems of the display panel.

[0169] In the first direction x, the length of the third opening 42 is greater than the length of the light-emitting surface 5 of the light-emitting element 4, and the first direction x is parallel to the plane in which the substrate 2 is located, thereby reducing the risk of the second sub-shielding part 41 shielding the light-emitting surface 5 of the light-emitting element 4.

[0170] In addition, in the direction away from the substrate 2, the length of the third opening 42 in the first direction x increases, the sidewall of the third opening 42 has an angle α4 with the plane in which the substrate 2 is located, and 42°≤α4≤90°, so as to ensure that the second sub-shielding part 41 can absorb light of a larger angle.

[0171] In other words, for the part of the second sub-shielding part 41 between the adjacent light-emitting elements 4, the second sub-shielding part 41 is in the shape of a trapezoid, and in the direction away from the substrate 2, the distance between the two opposite sides of the first sub-part 8 in the same direction decreases, and the angle between the side of the second sub-shielding part 41 and the bottom (the interface between the second sub-shielding part 41 and the first sub-shielding part 40) is α4.

[0172] In addition, the OD value of the second sub-shielding part 41 under a unit film thickness is greater than or equal to the OD value of the first sub-shielding part 40 under a unit film thickness, so that the shielding performance of the second sub-shielding part 41 is better, and the second sub-shielding part 41 can better converge the large-angle light.

[0173] In the embodiment of the present application, the first sub-shielding part 40 and the second sub-shielding part 41 can be formed by the same patterning process, or can be formed respectively in two times of patterning processes. When the first sub-shielding part 40 and the second sub-shielding part 41 are formed respectively in two times of patterning processes, the light-shielding materials used by the first sub-shielding part 40 and the second sub-shielding part 41 can be the same or different. The first sub-shielding part 40 can be made of a light-shielding material with higher flowability, and the thickness of the first sub-shielding part 40 can be between 1 and 10 microns.

[0174] In a feasible implementation, the glass transition temperature of the material of the first film layer 6 is less than or equal to 150 degrees Celsius, at which the light-shielding material of the first film layer 6 has higher thermal flowability, and is more suitable for forming Figure 19 the structure shown in FIG. 1.

[0175] In a feasible implementation, as Figure 22 shown in FIG. 2, Figure 22 FIG. 2 is another structure diagram of the display panel provided by the embodiment of the present application, the first film layer 6 further includes a second part 43, the second part 43 at least partially surrounds the first part 7, and the first part 7 is in communication with the second part 43. The surface of the second part 43 away from the substrate 2 is flush with the surface of the first part 7 away from the substrate 2.

[0176] The first shielding part 11 is located on the side of the second part 43 away from the substrate 2.

[0177] In this structure, the upper surfaces of the first part 7 and the second part 43 are flush, and the first film layer 6 in this region does not need to be further patterned, which can reduce the dependence on high-precision exposure machines in the process of the first film layer 6.

[0178] Further, referring again to Figure 22 in the first direction x, the length of the first opening 10 is greater than the length of the light-emitting surface 5 of the light-emitting element 4, and the first direction x is parallel to the plane in which the substrate 2 is located, thereby leaving a margin for the displacement of the light-emitting element 4 and preventing the first shielding part 11 from shielding the light-emitting surface 5 of the light-emitting element 4.

[0179] And / or, in the direction away from the substrate 2, the length of the first opening 10 in the first direction x increases, and the sidewall of the first opening 10 has an included angle a5 with the plane in which the substrate 2 is located, 42 degrees ≤ a5 ≤ 90 degrees, so that the first shielding part 11 can absorb light with a large angle, avoid this part of light with a large viewing angle from entering the glass cover plate to form total reflection, and further improve the halo and other adverse problems of the display panel.

[0180] And / or, the film thickness w of the first shielding part 11 is greater than or equal to 5 microns, so as to avoid that the first shielding part 11 is too thin and ensure the light-shielding effect of the first shielding part 11.

[0181] In one possible implementation, as shown in FIG. 4A, Figure 23 Figure 23 FIG. 4B shows another structure of the display panel provided by an embodiment of the present application. The display panel further comprises an encapsulation layer 44 located on the side of the barrier layer 9 away from the substrate 2.

[0182] At the position of the first opening 10, there is an air gap between the surface of the encapsulation layer 44 close to the substrate 2 and the surface of the first film layer 6 away from the substrate 2.

[0183] In one implementation, a pressure-sensitive OCA encapsulation structure can be used as the encapsulation layer 44, which is placed above the barrier layer 9 to form the air gap at the first opening 10. The length of the first opening 10 in the first direction x can be less than or equal to 50 pm to avoid the downward collapse of the encapsulation layer 44.

[0184] The refractive indexes of the light-emitting element 4, the air and the encapsulation layer 44 are different, which can cause multiple reflections and scattering of the light emitted by the light-emitting element 4 at the interface of the air gap, increase the probability of light emission, and thus reduce the absorption and loss of light inside the encapsulation layer 44, reduce the loss of encapsulation light efficiency, and help to improve the light-emitting efficiency and light-emitting uniformity of the light-emitting element 4.

[0185] In addition, the display panel can further comprise a cover plate 70 located on the side of the encapsulation layer 44 away from the substrate 2.

[0186] Further, as shown in FIG. 4C, Figure 24 Figure 24 FIG. 4D shows another structure of the display panel provided by an embodiment of the present application. The display panel further comprises a second film layer 45 located between the barrier layer 9 and the encapsulation layer 44. The second film layer 45 can comprise a transparent material. The second film layer 45 comprises a fourth opening 46, which overlaps the first opening 10 in the direction perpendicular to the plane on which the substrate 2 is located.

[0187] The above structure can increase the height of the air gap by using the second film layer 45. When part of the light is transmitted to the sidewall of the fourth opening 46, it will be refracted and transmitted out of the encapsulation layer 44 under the action of the refractive index difference between the air and the second film layer 45, thereby further improving the light-emitting efficiency of the light-emitting element 4.

[0188] The refractive index of the first film layer 6 is about 1.5, which is helpful to converge the light pattern of the light-emitting element 4. The second film layer 45 can comprise a high-refractive material, and the refractive index thereof can be greater than that of the first film layer 6, for example, greater than 1.5.

[0189] To be able to regulate more light and make more light tend to be emitted in the direction of the normal viewing angle, further, as shown in FIG. 4E,​​Figure 25 As shown, Figure 25 This is another structural schematic diagram of a display panel provided by an embodiment of the present invention. In the first direction x, the length of the fourth opening 46 can be made greater than the length of the first opening 10, and the sidewall of the fourth opening 46 is perpendicular to the plane of the substrate 2, and the first direction x is parallel to the plane of the substrate 2.

[0190] In one possible implementation, Figure 26 and Figure 27 As shown, Figure 26 Another top view of the display panel provided by the embodiment of the present invention, Figure 27 This is another structural diagram of a display panel provided by an embodiment of the present invention. The display panel may include a regular binding area 47 and a spare binding area 48 .

[0191] Array layer 3 includes a first pad group 51 located in regular bonding area 47 and a second pad group 52 located in spare bonding area 48. Each of first pad group 51 and second pad group 52 includes two pads 50. At least some light emitting elements 4 are located in regular bonding area 47 and electrically connected to first pad group 51.

[0192] In the direction perpendicular to the plane of the substrate 2 , a portion of the first opening 10 overlaps with the regular binding area 47 , and a portion of the first opening 10 overlaps with the spare binding area 48 .

[0193] The spare bonding area 48 includes a first spare bonding area 53. The first portion 7 further includes a second sub-portion 54. The second sub-portion 54 is located in the first spare bonding area 53 and covers the second pad group 52. The first spare bonding area 53 is a spare bonding area to which no light-emitting element 4 is ultimately bonded. The first spare bonding area 53 does not include the light-emitting element 4.

[0194] In the process of the display panel, after the light-emitting element 4 is transferred to the conventional binding area 47 and electrically connected to the first pad group 51, the light output brightness of this part of the light-emitting element 4 will also be tested to detect whether the light-emitting element 4 is damaged. When an undamaged light-emitting element 4 is detected, there is no need to rebind the light-emitting element 4 in the spare binding area 48. At this time, all the light-emitting elements 4 in the display panel are located in the conventional binding area 47. When a damaged light-emitting element 4 is detected, it is necessary to rebind the light-emitting element 4 in the spare binding area 48 next to the damaged light-emitting element 4 to compensate for the light-emitting brightness at this position. At this time, a part of the light-emitting elements 4 in the display panel are located in the conventional binding area 47, and another part of the light-emitting elements 4 are located in the spare binding area 48 and electrically connected to the second pad group 52. Furthermore, the damaged part of the light-emitting element 4 in the conventional binding area 47 can be removed or retained in the display panel.

[0195] When the display panel comprises the regular binding area 47 and the backup binding area 48, the first part 7 comprises the first sub-part 8 and the second sub-part 54. The first sub-part 8 is located at the position where the light emitting element 4 is located, and the first sub-part 8 covers the light emitting surface 5 of the light emitting element 4 to prevent the light blocking material from remaining on the light emitting surface 5. The second sub-part 54 is located at the position where the light emitting element 4 is not located.

[0196] It can be understood that the position of the damaged light emitting element 4 is random. The above structure is that the first part 7 is formed in each regular binding area 47 and each backup binding area 48. When the light emitting element 4 is finally bound in the backup binding area 48, the first part 7 at this position serves as the first sub-part 8. When the light emitting element 4 is not finally bound in the backup binding area 48, the first part 7 at this position serves as the second sub-part 54. In this way, even if the positions of the damaged light emitting elements 4 in different panels are different, the same mask plate pattern can be adapted in the process of the first film layer 6, thereby saving process cost.

[0197] In the embodiment of the present application, referring to Figure 27 , the surface (top surface) away from the substrate 2 in the second sub-part 54 can be flush with the surface (top surface) away from the substrate 2 in the first sub-part 8, that is, the height of the second sub-part 54 is consistent with the height of the first sub-part 8. In this case, the shape of the side surface of the second sub-part 54 can be consistent with the shape of the side surface of the first sub-part 8, for example, the second sub-part 54 and the first sub-part 8 are both inverted trapezoidal, and the angle between the side surface and the top surface in the second sub-part 54 is the same as the angle between the side surface and the top surface in the first sub-part 8.

[0198] Alternatively, referring to Figure 36 , the surface away from the substrate 2 in the second sub-part 54 can also be not flush with the surface away from the substrate 2 in the first sub-part 8, for example, the distance between the top surface of the second sub-part 54 and the substrate 2 is less than the distance between the top surface of the first sub-part 8 and the substrate 2, that is, the height of the second sub-part 54 is less than the height of the first sub-part 8. In this case, the shape of the side surface of the second sub-part 54 can be different from the shape of the side surface of the first sub-part 8.

[0199] Further, referring again to Figure 26 and Figure 28 , Figure 28As shown in FIG. 6, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position.

[0200] Alternatively, as shown in FIG. 7, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position. Figure 29 and Figure 30 As shown in FIG. 8, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position. Figure 29 As shown in FIG. 9, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position. Figure 30 As shown in FIG. 10, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position.

[0201] In the structure, after the light emitting elements 4 in the spare binding area 48 beside the damaged light emitting elements 4 are re-bound, the position of the first spare binding area 53 without the bound light emitting elements 4 can be detected, and then the first shielding part 11 is formed by patterning the light shielding material to cover the first spare binding area 53. The first shielding part 11 shields the pads 50 and other metal traces in the first spare binding area 53, and further reduces the reflectivity of the display panel.

[0202] Further, when the first shielding part 11 covers the first spare binding area 53, the distance between at least part of the adjacent light emitting elements 4 is large, and thus the upper surface of the light shielding material at the position of the first spare binding area 53 can be concave when the light shielding material is deposited.

[0203] As shown in FIG. 11, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position. Figures 31-34 As shown in FIG. 12, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position. Figure 31 As shown in FIG. 13, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position. Figure 32 As shown in FIG. 14, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position. Figure 33 As shown in FIG. 15, the display panel provided by the embodiment of the present application further includes a second spare binding area 55. The second spare binding area 55 includes light emitting elements 4. In other words, the light emitting elements 4 in the regular binding area 47 beside the second spare binding area 55 are damaged, and thus the light emitting elements 4 in the second spare binding area 55 are re-bound to compensate the light emitting brightness at the position.

[0204] The first film layer 6 further includes a third part 58, and the third part 58 is filled in the light-transmitting area 57.

[0205] The display panel with the structure can realize transparent display. When the display panel includes the light-transmitting area 57, the metal layer and the insulating layer in the light-transmitting area 57 are usually removed. In the embodiment, the transmittance of the first film layer 6 is greater than that of the insulating layer in the array layer 3, and by making the first film layer 6 further include the third portion 58 filled in the light-transmitting area 57, the flatness of the film layer in the light-transmitting area 57 and the circuit area 56 can be improved without affecting the transmittance of the light-transmitting area 57.

[0206] In a possible implementation, referring to Figure 31 and Figure 32 , the display panel further includes a wiring area 59, and the array layer 3 includes a signal line 60 located in the wiring area 59.

[0207] The first film layer 6 further includes a fourth portion 61 located in the wiring area 59, and a surface of the fourth portion 61 away from the substrate 2 is flush with a surface of the third portion 58 away from the substrate 2.

[0208] The shielding layer 9 further includes a second shielding portion 62 located in the wiring area 59 and located on a side of the fourth portion 61 away from the substrate 2.

[0209] In this structure, the upper surfaces of the portions of the first film layer 6 located in the light-transmitting area 57 and the wiring area 59 are flush, and the portions of the first film layer 6 in the wiring area 59 and the light-transmitting area 57 do not need to be etched, which can reduce the dependence on a high-precision exposure machine in the process of the first film layer 6.

[0210] Alternatively, in another possible implementation, as shown in Figure 34 , Figure 34 is another structure diagram of the display panel provided in the embodiment, the display panel further includes a wiring area 59, and the array layer 3 includes a signal line 60 located in the wiring area 59. The first film layer 6 further includes a fourth portion 61 located in the wiring area 59, and a distance between a surface of the fourth portion 61 away from the substrate 2 and the substrate 2 is less than a distance between a surface of the third portion 58 away from the substrate 2 and the substrate 2, that is, the surface of the fourth portion 61 away from the substrate 2 is lower than the surface of the third portion 58 away from the substrate 2. In this way, on the one hand, the second shielding portion 62 does not need to occupy extra film layer height, and on the other hand, the second shielding portion 62 at the wiring area 59 can have a greater thickness, so that the shielding performance of the second shielding portion 62 on the signal line 60 is better.

[0211] In a possible implementation, as shown in Figure 35 , Figure 35As shown in FIG. 6, the display panel further includes a third film layer 63 located on the side of the first film layer 6 and the first shielding portion 11 away from the substrate 2. The refractive index of the first film layer 6 is about 1.5. To help converge the light type of the light emitting element 4, the third film layer 63 can include a high-refractive material, and the refractive index of the high-refractive material can be greater than the refractive index of the first film layer 6, for example, greater than 1.5.

[0212] The third film layer 63 includes a fifth opening 64. In the direction perpendicular to the plane where the substrate 2 is located, the fifth opening 64 overlaps the light transmission area 57, and in the first direction x, the length of the fifth opening 64 is less than the length of the light transmission area 57, and the first direction x is parallel to the plane where the substrate 2 is located.

[0213] When the first film layer 6 and the shielding layer 9 are further provided with the third film layer 63, the third film layer 63 is not entirely covered, but is opened at the light transmission area 57, which can reduce the influence of the third film layer 63 on the transmittance of the light transmission area 57, and help optimize the transparent display.

[0214] Further, referring again to Figure 35 , the third film layer 63 overlaps the third portion 58, and the distance z between the side wall of the fifth opening 64 and the edge adjacent to the side wall of the third portion 58 in the plane where the substrate 2 is located is greater than or equal to 5 μm, so that the third film layer 63 and the third portion 58 have sufficient overlap distance, which can ensure the RA reliability between the third film layer 63 and the third portion 58.

[0215] In a feasible implementation, as shown in Figure 36 , Figure 36 As shown in FIG. 6, the display panel further includes a third film layer 63 located on the side of the first film layer 6 and the first shielding portion 11 away from the substrate 2. The refractive index of the first film layer 6 is about 1.5. To help converge the light type of the light emitting element 4, the third film layer 63 can include a high-refractive material, and the refractive index of the high-refractive material can be greater than the refractive index of the first film layer 6, for example, greater than 1.5.

[0216] The metal layer and the insulating layer in the light-transmitting area 57 are removed, so that the array layer forms a deeper groove in the light-transmitting area 57. When the first film layer 6 is formed, more transparent material flows into the groove in the light-transmitting area 57. In the embodiment, the third part 58 is designed to be relatively thin, so that the thickness of the transparent material to be deposited is reduced, and the cost is saved. Further, when the transparent material to be deposited is relatively thin, the distance between the surface away from the substrate 2 in the second sub-part 54 of the first spare binding area 53 and the substrate 2 is smaller than the distance between the surface away from the substrate 2 in the first sub-part 8 and the substrate 2, that is, the height of the second sub-part 54 is smaller than the height of the first sub-part 8. For example, the surface away from the substrate 2 in the second sub-part 54 and the surface away from the substrate 2 in the third part 58 can be flush.

[0217] Based on the same inventive concept, the embodiment of the present application also provides a manufacturing method of a display panel, which is combined with Figure 2 and Figure 3 As shown in Figure 37 , Figure 37 is a flow chart of the manufacturing method of the display panel provided by the embodiment of the present application. The manufacturing method of the display panel comprises the following steps.

[0218] Step S1: forming an array substrate 1, which comprises a substrate 2 and an array layer 3.

[0219] Step S2: forming a plurality of light-emitting elements 4 on one side of the array substrate 1. The light-emitting element 4 comprises a light-emitting surface 5 away from the substrate 2. The light-emitting element 4 can be transferred to the upper side of the array substrate 1 by means of mass transfer, and is bound with the pads in the array substrate 1 to realize the electrical connection between the light-emitting element 4 and the array substrate 1.

[0220] Step S3: forming a first film layer 6, which comprises a plurality of first parts 7. The first part 7 comprises a first sub-part 8, and the first sub-part 8 covers the light-emitting surface 5 of the light-emitting element 4.

[0221] Step S4: after the first film layer 6 is formed, a shielding layer 9 is formed. The shielding layer 9 comprises a plurality of first openings 10, and at least part of the first openings 10 overlaps with the light-emitting element 4 in the direction perpendicular to the plane in which the substrate 2 is located. The shielding layer 9 further comprises a first shielding part 11, and the first shielding part 11 is adjacent to the first opening 10.

[0222] In the technical solution provided in the embodiments of the present application, after the light emitting element 4 is transferred to the array substrate 1, the light emitting surface 5 of the light emitting element 4 can be first filled and protected by the first sub portion 8, and then when the light shielding material is deposited to form the shielding layer 9, the light shielding material will not contact the light emitting surface 5, and thus will not be left in the hole or the gap of the light emitting surface 5 to cause brightness loss. Moreover, the shielding layer 9 is arranged later than the light emitting element 4, and when the light shielding material is deposited, the light shielding material will directly flow to the contact with the first sub portion 8 or the light emitting element 4, and there is no need to reserve a larger opening for the exposure alignment and other requirements considering the transfer accuracy of the light emitting element. The first shielding portion 11 can have a larger shielding area, and thus the display panel can achieve high brightness and low reflectivity.

[0223] In a feasible implementation manner, the first film layer 6 and the shielding layer 9 are formed by using a negative photoresist. Figure 2 Again referring to Figure 37 , the process of forming the first film layer 6 includes: forming the first film layer 6 including the first portion 7 and the second opening 14 by using a photolithography process, the second opening 14 at least partially surrounds the first portion 7, and the second opening 14 is spaced between the adjacent first portions 7. The first portion 7 includes the first side surface 15, and the first side surface 15 is inclined away from the corresponding light emitting element 4 in the direction away from the substrate 2.

[0224] In the process of forming the shielding layer 9, the first shielding portion 11 is at least located in the second opening 14, and the distance between the surface of the first shielding portion 11 away from the substrate 2 and the substrate 2 is smaller than the distance between the surface of the first sub portion 8 away from the substrate 2 and the substrate 2.

[0225] In the process of forming the shielding layer 9, the first shielding portion 11 is at least located in the second opening 14, and the distance between the surface of the first shielding portion 11 away from the substrate 2 and the substrate 2 is smaller than the distance between the surface of the first sub portion 8 away from the substrate 2 and the substrate 2. Figure 37 The above is an example in which the first film layer 6 and the shielding layer 9 both use a negative photoresist. In the process of forming the first film layer 38, the light transmission region of the first mask plate 80 used corresponds to the position where the first film layer 38 needs to be formed, and the distance between the edge of the light transmission region of the first mask plate 80 and the edge of the light emitting surface 5 of the light emitting element 4 can be less than or equal to 3 μm. In the process of forming the shielding layer 9, the light transmission region of the second mask plate 90 used corresponds to the position where the shielding layer 9 needs to be formed, and the distance between the edge of the light transmission region of the second mask plate 90 and the edge of the first sub portion 8 can be greater than or equal to 0.

[0226] Of course, the first film layer 6 and the shielding layer 9 can also be formed by using a positive photoresist. In the process of forming the first film layer 38, the light shielding region of the mask plate used corresponds to the position where the first film layer 38 needs to be formed, and in the process of forming the shielding layer 9, the light shielding region of the mask plate used corresponds to the position where the shielding layer 9 needs to be formed.

[0227] In the above manufacturing process, the first sub-parts 8 are independent of each other, and the first sub-part 8 can be, for example, in the shape of an inverted trapezoid. When the light-shielding material is subsequently deposited to form the shielding layer 9, the light-shielding material has a high proportion of solvent, and the light-shielding material has high thermal fluidity when it is post-baked. Therefore, the light-shielding material has a certain amount of overlap with the inverted trapezoidal lower side of the first sub-part 8 in the direction perpendicular to the substrate 2, so that the coverage of the first shielding part 11 on the array substrate 1 is limited by the first side 15 of the first sub-part 8 or the light-emitting element 4.

[0228] For example, referring to Figure 2 In the second opening 14, the light-shielding material flows to contact the first side 15, and the shielding area of the first shielding part 11 is at least limited by the first side 15. The first side 15 is inclined at the bottom edge toward the light-emitting element 4, which helps to make the shielding area of the first shielding part 11 larger.

[0229] Alternatively, referring to Figure 9 In the mass transfer process, some light-emitting elements 4-1 can be misaligned. If some light-emitting elements 4 are misaligned so that at least one side of the light-emitting element 4 is exposed to the first sub-part 8, the light-shielding material flows to contact the light-emitting element 4 during deposition of the light-shielding material, so that the first shielding part 11 has a large shielding area on that side and can cover the bottom metal to a greater extent.

[0230] Furthermore, the first side 15 is inclined away from the corresponding light-emitting element 4 in the direction away from the substrate 2. The first side 15 can also improve the climbing of the light-shielding material along the sidewall of the first sub-part 8 and avoid the light-shielding material remaining on the upper surface of the first sub-part 8.

[0231] In addition, the second opening 14 is provided between adjacent first sub-parts 8, and the first shielding part 11 is located in the second opening 14 and is more downward. In addition, the upper surface of the first shielding part 11 is lower than the upper surface of the first sub-part 8, which can also avoid the first shielding part 11 causing excessive shielding of the lateral light of the light-emitting element 4 and resulting in loss of viewing angle brightness.

[0232] In a feasible implementation, in combination with Figure 19 As shown in Figure 38 Figure 38 ​Another flow chart of a method for manufacturing a display panel provided in an embodiment of the present invention, wherein the process of forming the first film layer 6 includes: applying a material for forming the first film layer 6 on one side of the array substrate 1, wherein the material flows to form the first film layer 6 including a first portion 7 and a groove 39, wherein the groove 39 at least partially surrounds the first portion 7, and grooves 39 are spaced between adjacent first portions 7. The first portion 7 includes a first side surface 15, which is inclined in a direction away from the substrate 2 toward the corresponding light-emitting element 4.

[0233] When forming the blocking layer 9 , the first blocking portion 11 is at least located in the groove 39 , and the distance between the surface of the first blocking portion 11 away from the substrate 2 and the substrate 2 is greater than or equal to the distance between the surface of the first sub-portion 8 away from the substrate 2 and the substrate 2 .

[0234] In this manufacturing process, in one process for forming the first film layer 6, the first film layer 6 can be made of a transparent material with thermal fluidity, such as polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene (PS), polyethylene terephthalate (PET), or polybutylene terephthalate (PBT). During the flow of this material, grooves 39 are naturally formed between the light-emitting elements 4, simultaneously naturally forming the inclined first side surfaces 15. In this process, only a relatively thin coating of the transparent material is required to ensure that the transparent material covers the light-emitting surfaces 5 of the light-emitting elements 4.

[0235] The first shielding portion 11 is located relatively high within the groove 39. Setting the upper surface of the first shielding portion 11 to at least be flush with the upper surface of the first sub-portion 8 can reduce the size of the first opening 10 in the shielding layer 9, thereby increasing the coverage area of ​​the first shielding portion 11. For example, in one configuration, in the first direction x, the length of the first opening 10 approaches the length of the light-emitting surface 5 of the light-emitting element 4.

[0236] In one possible embodiment, combining Figure 22 ,like Figure 39 As shown, Figure 39 Another flow chart of the method for manufacturing a display panel provided in an embodiment of the present invention, the process of forming a first film layer 6 includes: forming a first film layer 6 including a first part 7 and a second part 43, the second part 43 at least partially surrounding the first part 7, the first part 7 and the second part 43 being connected, and the surface of the second part 43 away from the substrate 2 is flush with the surface of the first part 7 away from the substrate 2.

[0237] When the shielding layer 9 is formed, the first shielding portion 11 is located on a side of the second portion 43 away from the substrate 2 .

[0238] The process of the first film layer 6 is simpler, the upper surface of the first film layer 6 at the position of the light emitting element 4 and the first shielding part 11 is flush, and the first film layer 6 in the area does not need to be etched, thereby reducing the dependence on a high-precision exposure machine.

[0239] Based on the same inventive concept, the embodiment of the present application also provides a display device, as shown in Figure 40 Figure 40 A structure schematic diagram of the display device provided by the embodiment of the present application is shown in the figure, and the display device comprises the display panel 100. Figure 40 The display device shown in the figure is only for illustrative purposes, and the display device can be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic paper, or a television.

[0240] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0241] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.​

Claims

1. A display panel, characterized in that: include: An array substrate, comprising a substrate and an array layer; a plurality of light-emitting elements located on one side of the array substrate, wherein the light-emitting elements include a light-emitting surface away from the substrate; a first film layer located on one side of the array substrate, the first film layer including a plurality of first portions, the first portion including a first sub-portion, the first sub-portion at least covering the light emitting surface of the light emitting element; A shielding layer is located on one side of the array substrate, the shielding layer includes a plurality of first openings, at least some of the first openings overlap with the light-emitting elements in a direction perpendicular to the plane of the substrate, and the shielding layer also includes a first shielding portion, which is adjacent to the first opening.

2. The display panel according to claim 1, wherein: The first film layer further includes a second opening, wherein the second opening at least partially surrounds the first portion, and adjacent first portions are spaced apart by the second opening; The first sub-portion includes a first side surface, and along a direction away from the substrate, the first side surface is inclined toward a direction away from the corresponding light-emitting element; The first shielding portion is at least located at the second opening, and a distance between a surface of the first shielding portion away from the substrate and the substrate is smaller than a distance between a surface of the first sub-portion away from the substrate and the substrate.

3. The display panel according to claim 2, wherein: The thickness of the first shielding portion is less than or equal to 5 μm; And / or, the light emitting element includes a quantum well layer, and the distance between the surface of the quantum well layer close to the substrate and the substrate is greater than the distance between the surface of the first shielding portion away from the substrate and the substrate.

4. The display panel according to claim 2, wherein: The light emitting element includes a main body and an electrode, the main body includes a first sub-main body and a second sub-main body stacked in a direction perpendicular to the substrate, and the second sub-main body is located between the first sub-main body and the electrode; The orthographic projection of the first side surface on the first plane at least overlaps with the orthographic projection of the second sub-body portion on the first plane, and the first plane is perpendicular to the plane where the substrate is located; The first shielding portion contacts the first side surface.

5. The display panel according to claim 4, wherein: The first sub-portion includes a first top surface located on a side of the light-emitting element away from the substrate, and the first side surface is connected to the first top surface.

6. The display panel according to claim 4, wherein: The first sub-section includes a first top surface located on a side of the light-emitting element away from the substrate, and the first side surface is connected to the first top surface via a second side surface.

7. The display panel according to claim 6, wherein: Along a direction away from the substrate, the second side surface is inclined toward a direction close to the corresponding light-emitting element; There is an angle α1 between the first side surface and the plane where the substrate is located, α1<90°; there is an angle α2 between the second side surface and the plane where the substrate is located, α2<90°, α2>α1.

8. The display panel according to claim 6, wherein: The first side surface includes a first edge close to the substrate, and the second side surface includes a second edge away from the substrate; The main body includes a third side surface close to the first side surface and the second side surface, and the third side surface includes a third edge close to the substrate; The distance between the orthographic projection of the first side on the plane where the substrate is located and the orthographic projection of the third side on the plane where the substrate is located is smaller than the distance between the orthographic projection of the second side on the plane where the substrate is located and the orthographic projection of the third side on the plane where the substrate is located.

9. The display panel according to claim 2, wherein: The light emitting element includes a main body and an electrode, the main body includes a first sub-main body and a second sub-main body stacked in a direction perpendicular to the substrate, and the second sub-main body is located between the first sub-main body and the electrode; The orthographic projection of the first side surface on the first plane overlaps with the orthographic projection of the first sub-body portion on the first plane, the orthographic projection of the first side surface on the first plane does not overlap with the orthographic projection of the second sub-body portion on the first plane, and the first plane is perpendicular to the plane where the substrate is located; A side surface of the second sub-body portion contacts the first shielding portion.

10. The display panel according to claim 2, wherein: The first sub-portion includes a first top surface located on a side of the light emitting element away from the substrate. Along a first direction, the length of the first top surface is greater than the length of the light emitting surface. The first direction is parallel to the plane of the substrate.

11. The display panel according to claim 10, wherein: The first top surface includes a fourth side and a fifth side opposite to each other in the first direction; The light-emitting element includes a main body and an electrode, the main body includes a third side surface and a fourth side surface opposite to each other in the first direction, the third side surface is close to the fourth side; wherein the third side surface includes a third side close to the substrate, and the fourth side surface includes a sixth side close to the substrate; Among them, in at least one of the light-emitting elements and the first sub-portion corresponding thereto: the distance between the orthographic projection of the fourth side on the plane where the substrate is located and the orthographic projection of the third side on the plane where the substrate is located is smaller than the distance between the orthographic projection of the fifth side on the plane where the substrate is located and the orthographic projection of the sixth side on the plane where the substrate is located; the third side surface is in contact with the first blocking portion on one side thereof, the first side surface includes a first sub-side surface, the first sub-side surface is located on the side of the fourth side surface away from the third side surface, and the first sub-side surface is in contact with the first blocking portion on one side thereof.

12. The display panel according to claim 11, wherein: The light emitting element includes an electrode, and the electrode includes an anode and a cathode, wherein the third side surface is close to the cathode.

13. The display panel according to claim 10, wherein: The first top surface includes a fourth side and a fifth side opposite to each other in the first direction; The light-emitting element includes a main body and an electrode, the main body includes a third side surface and a fourth side surface opposite to each other in the first direction, the third side surface is close to the fourth side; wherein the third side surface includes a third side close to the substrate, and the fourth side surface includes a sixth side close to the substrate; In which, in at least one of the light-emitting elements and the first sub-portion corresponding thereto: the distance between the orthographic projection of the fourth side on the plane where the substrate is located and the orthographic projection of the third side on the plane where the substrate is located is equal to the distance between the orthographic projection of the fifth side on the plane where the substrate is located and the orthographic projection of the sixth side on the plane where the substrate is located; the first side surface includes a first sub-side surface and a second sub-side surface relative to each other, the first sub-side surface is located on the side of the fourth side surface away from the third side surface, the first sub-side surface is in contact with the first blocking portion on one side thereof, and the second sub-side surface is in contact with the first blocking portion on one side thereof.

14. The display panel according to claim 2, wherein: The array layer includes a pad and a first insulating layer, the light-emitting element is electrically connected to the pad, the first insulating layer is an insulating layer adjacent to the pad and farthest from the substrate, the first sub-section includes a first top surface located on a side of the light-emitting element away from the substrate, and a minimum distance between the first top surface and the first insulating layer is H, where H is ≥ 11 μm; and / or, an angle α3 is formed between the first side surface and the plane where the substrate is located, and α3 is ≥ 105°; And / or, in a first direction, the length of the first top surface is greater than the length of the light emitting surface and the difference between the length and the light emitting surface is ΔL, ΔL≥6 μm, and the first direction is parallel to the plane where the substrate is located.

15. The display panel according to claim 2, wherein: The array layer includes a pad and a first insulating layer, the light-emitting element is electrically connected to the pad, the first insulating layer is an insulating layer adjacent to the pad and farthest from the substrate, the first sub-section includes a first top surface located on a side of the light-emitting element away from the substrate, and a minimum distance H between the first top surface and the first insulating layer; An included angle α3 is formed between the first side surface and the plane where the substrate is located, and α3>90°; In a first direction, the length of the first top surface is greater than the length of the light emitting surface, and the difference between the length and the light emitting surface is ΔL. The first direction is parallel to the plane where the substrate is located. The light-emitting element includes a first light-emitting element and a second light-emitting element; The first light-emitting element and the second light-emitting element have different heights, and the values ​​of H of the first sub-section corresponding to the first light-emitting element and the second light-emitting element are the same; And / or, in the first direction, the lengths of the light emitting surfaces of the first light emitting element and the second light emitting element are different, and the values ​​of α3 of the first sub-portion corresponding to the first light emitting element and the second light emitting element are different; And / or, in the first direction, the lengths of the light emitting surfaces of the first light emitting element and the second light emitting element are different, and the values ​​of ΔL of the first sub-portions corresponding to the first light emitting element and the second light emitting element are different.

16. The display panel according to claim 1, wherein The first film layer further includes a second opening, wherein the second opening at least partially surrounds the first portion, and adjacent first portions are spaced apart by the second opening; The first sub-portion includes a first side surface, and along a direction away from the substrate, the first side surface is inclined toward a direction away from the corresponding light-emitting element; The first blocking portion is at least located at the second opening, and a surface of the first blocking portion away from the substrate is recessed toward the substrate.

17. The display panel according to claim 16, wherein: The first shielding portion between adjacent first portions includes a middle shielding portion and an edge shielding portion surrounding the middle shielding portion, and a film thickness of the middle shielding portion is smaller than a film thickness of the edge shielding portion; The first sub-portion includes a first top surface located on a side of the light-emitting element away from the substrate, the first opening exposes at least a portion of the first top surface, and the edge shielding portion overlaps an edge of the first top surface.

18. The display panel according to claim 16, wherein: The first shielding portion between adjacent first portions includes a middle shielding portion and an edge shielding portion surrounding the middle shielding portion, and a film thickness of the middle shielding portion is smaller than a film thickness of the edge shielding portion; The film thickness of the middle shielding portion is h1, OD1×h1>1.0, wherein OD1 is the OD value of the shielding material per unit thickness.

19. The display panel according to claim 1, wherein The first film layer further includes a groove, wherein the groove at least partially surrounds the first portion, and adjacent first portions are spaced apart by the groove; The first sub-portion includes a first side surface, and along a direction away from the substrate, the first side surface is inclined toward a direction close to the corresponding light-emitting element; The first shielding portion is at least located in the groove, and a distance between a surface of the first shielding portion away from the substrate and the substrate is greater than or equal to a distance between a surface of the first sub-portion away from the substrate and the substrate.

20. The display panel according to claim 19, wherein The first shielding portion includes a first sub-shielding portion and a second sub-shielding portion stacked in a direction perpendicular to the substrate, the first sub-shielding portion is located in the groove, and the second sub-shielding portion is located on a side of the first sub-shielding portion away from the substrate. The shielding layer also includes a plurality of third openings, in a direction perpendicular to the plane of the substrate, the third openings overlap with the light-emitting element, and the second sub-shielding portion is adjacent to the first opening; Wherein, in a first direction, the length of the third opening is greater than the length of the light-emitting surface of the light-emitting element, and the first direction is parallel to the plane where the substrate is located; and / or, along a direction away from the substrate, the length of the third opening in the first direction increases gradually, and an angle α4 is formed between a sidewall of the third opening and a plane where the substrate is located, 42°≤α4≤90°; And / or, the OD value of the second sub-blocking portion per unit film thickness is greater than or equal to the OD value of the first sub-blocking portion per unit film thickness.

21. The display panel according to claim 1, wherein The glass transition temperature of the material of the first film layer is less than or equal to 150°C.

22. The display panel according to claim 1, wherein The first film layer further includes a second portion, the second portion at least partially surrounding the first portion, the first portion being in communication with the second portion, and a surface of the second portion away from the substrate being flush with a surface of the first portion away from the substrate; The first shielding portion is located on a side of the second portion away from the substrate.

23. The display panel according to claim 22, wherein: In a first direction, the length of the first opening is greater than the length of the light emitting surface of the light emitting element, and the first direction is parallel to the plane where the substrate is located; And / or, along a direction away from the substrate, the length of the first opening in the first direction increases gradually, and an angle α5 is formed between a sidewall of the first opening and a plane where the substrate is located, 42°≤α5≤90°; And / or, the thickness of the first shielding portion is greater than or equal to 5 μm.

24. The display panel according to claim 22, wherein: The display panel further includes an encapsulation layer, wherein the encapsulation layer is located on a side of the shielding layer away from the substrate; At the location of the first opening, an air gap exists between a surface of the encapsulation layer close to the substrate and a surface of the first film layer far from the substrate.

25. The display panel according to claim 24, wherein: The display panel further includes a second film layer, which is located between the shielding layer and the encapsulation layer. The second film layer includes a fourth opening, and the fourth opening overlaps with the first opening in a direction perpendicular to the plane of the substrate.

26. The display panel according to claim 25, wherein: In a first direction, the length of the fourth opening is greater than that of the first opening. The first direction is parallel to the plane where the substrate is located, and a sidewall of the fourth opening is perpendicular to the plane where the substrate is located.

27. The display panel according to claim 1, wherein The display panel includes a regular binding area and a spare binding area, the array layer includes a first pad group located in the regular binding area and a second pad group located in the spare binding area, and at least part of the light-emitting elements are located in the regular binding area and electrically connected to the first pad group; In a direction perpendicular to the plane of the substrate, part of the first opening overlaps with the regular binding area, and part of the first opening overlaps with the spare binding area; The standby bonding area includes a first standby bonding area, the first portion further includes a second sub-portion, and the second sub-portion is located in the first standby bonding area and covers the second pad group.

28. The display panel according to claim 1, wherein The display panel includes a circuit area and a light-transmitting area, the array layer includes a pixel circuit located in the circuit area, and the light-emitting element is located in the circuit area; The first film layer further includes a third portion, and the third portion is filled in the light-transmitting area.

29. The display panel according to claim 28, wherein: The display panel further includes a wiring area, and the array layer includes signal lines located in the wiring area; The first film layer further includes a fourth portion, the fourth portion is located in the routing area, and a surface of the fourth portion away from the substrate is flush with a surface of the third portion away from the substrate; The shielding layer further includes a second shielding portion, which is located in the routing area and on a side of the fourth portion away from the substrate.

30. The display panel according to claim 28, wherein The display panel further includes a third film layer, the third film layer being located on a side of the first film layer and the first shielding portion away from the substrate; The third film layer includes a fifth opening, which overlaps with the light-transmitting area in a direction perpendicular to the plane of the substrate, and the length of the fifth opening is smaller than the length of the light-transmitting area in a first direction, and the first direction is parallel to the plane of the substrate.

31. The display panel according to claim 30, wherein: A distance between an orthographic projection of a sidewall of the fifth opening on the plane where the substrate is located and an orthographic projection of an edge of the third portion adjacent thereto on the plane where the substrate is located is greater than or equal to 5 μm.

32. The display panel according to claim 28, wherein: A distance between a surface of the third portion away from the substrate and the substrate is smaller than a distance between a surface of the first sub-portion away from the substrate and the substrate.

33. A method for manufacturing a display panel, characterized in that: Used to form the display panel according to any one of claims 1 to 32, comprising: forming an array substrate, wherein the array substrate comprises a substrate and an array layer; A plurality of light-emitting elements are formed on one side of the array substrate, wherein the light-emitting elements include a light-emitting surface away from the substrate; forming a first film layer, wherein the first film layer includes a plurality of first portions, the first portion includes a first sub-portion, and the first sub-portion covers the light emitting surface of the light emitting element; After forming the first film layer, a blocking layer is formed, the blocking layer including a plurality of first openings, at least some of the first openings overlapping with the light-emitting element in a direction perpendicular to the plane of the substrate, the blocking layer also including a first blocking portion, the first blocking portion being adjacent to the first opening.

34. The method for manufacturing a display panel according to claim 33, wherein: The process of forming the first film layer includes: using a photolithography process to form the first film layer including the first part and the second opening, the second opening at least partially surrounding the first part, and the second opening is spaced between adjacent first parts; wherein the first part includes a first side surface, and along the direction away from the substrate, the first side surface is inclined in the direction away from its corresponding light-emitting element. When forming the blocking layer, the first blocking part is at least located at the second opening, and the distance between the surface of the first blocking part away from the substrate and the substrate is smaller than the distance between the surface of the first sub-part away from the substrate and the substrate.

35. The method for manufacturing a display panel according to claim 33, wherein: The process of forming the first film layer includes: applying a material for forming the first film layer on one side of the array substrate, wherein the material flows to form the first film layer including the first portion and a groove, wherein the groove at least partially surrounds the first portion, and the groove is spaced between adjacent first portions; wherein the first portion includes a first side surface, and along a direction away from the substrate, the first side surface is inclined toward a direction close to the corresponding light-emitting element; When forming the blocking layer, the first blocking portion is at least located in the groove, and the distance between the surface of the first blocking portion away from the substrate and the substrate is greater than or equal to the distance between the surface of the first sub-portion away from the substrate and the substrate.

36. The method for manufacturing a display panel according to claim 33, wherein: The process of forming the first film layer includes: forming the first film layer including the first portion and a second portion, wherein the second portion at least partially surrounds the first portion, the first portion is connected to the second portion, and a surface of the second portion away from the substrate is flush with a surface of the first portion away from the substrate; When the shielding layer is formed, the first shielding portion is located on a side of the second portion away from the substrate.

37. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 32.

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