Display panel, manufacturing method thereof and display device

Abstract

The application provides a display panel, a manufacturing method thereof and a display device. The display panel comprises a light path adjusting structure, and a light emitting unit is located in a first groove of the light path adjusting structure. The first groove can ensure that light cross talk does not occur between different light emitting units. In addition, a first receiving electrode and a second receiving electrode located on at least the inner side wall of the first groove reflect the lateral light of the light emitting unit and emit the lateral light from the opening of the first groove, so as to improve the light emitting efficiency of the light emitting unit. That is to say, the display panel can reasonably utilize the lateral light of the light emitting unit to improve the light emitting efficiency of the light emitting unit and the display effect of the display panel under the condition that light cross talk does not occur between different light emitting units.

Description

TECHNICAL FIELD

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

[0002] With the continuous development of science and technology, various display devices have been widely used in people's life and work, bringing great convenience to people's daily life.

[0003] As one of the important components of display devices, the structure design of the display panel will directly or indirectly affect the display effect of the display device.

[0004] Based on the current display panel, since the light-emitting unit will have lateral light output, in order to prevent the light emitted between different light-emitting units from causing crosstalk, a light shielding structure will be provided between the light-emitting units to absorb the lateral light of the light-emitting unit.

[0005] However, the current technology will obviously affect the light-emitting efficiency of the light-emitting unit and further affect the display effect of the display panel due to the absorption of the lateral light of the light-emitting unit by the light shielding structure. SUMMARY

[0006] Therefore, in order to solve the above problems, the present application provides a display panel, a manufacturing method thereof and a display device, and the technical solutions are as follows:

[0007] A display panel comprises:

[0008] A light path adjusting layer is provided with a plurality of first grooves;

[0009] A light-emitting unit is located in the first groove;

[0010] A first receiving electrode and a second receiving electrode are located at least on the inner side wall of the first groove;

[0011] The light-emitting unit comprises a first electrode and a second electrode, the first electrode is electrically connected to the first receiving electrode, and the second electrode is electrically connected to the second receiving electrode;

[0012] The first receiving electrode reflects the light incident on the first receiving electrode from the light-emitting unit, and the second receiving electrode reflects the light incident on the second receiving electrode from the light-emitting unit.

[0013] A manufacturing method of a display panel comprises:

[0014] A light path adjusting layer is formed, and a plurality of first grooves are provided on the light path adjusting layer;

[0015] a first receiving electrode and a second receiving electrode are formed on at least an inner side wall of the first groove;

[0016] a light emitting unit is arranged in the first groove, the light emitting unit comprising a first electrode and a second electrode, the first electrode being electrically connected with the first receiving electrode, and the second electrode being electrically connected with the second receiving electrode;

[0017] The first receiving electrode reflects light incident on the first receiving electrode from the light emitting unit, and the second receiving electrode reflects light incident on the second receiving electrode from the light emitting unit.

[0018] A display device comprising the display panel.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The display panel provided by the present application comprises a light path adjusting structure, and a light emitting unit is arranged in a first groove of the light path adjusting structure. The first groove can prevent light crosstalk between different light emitting units. In addition, a first receiving electrode and a second receiving electrode arranged on at least an inner side wall of the first groove can reflect lateral light of the light emitting unit to emit from an opening of the first groove, thereby improving the light emitting efficiency of the light emitting unit.

[0021] That is, the display panel can reasonably utilize the lateral light of the light emitting unit to improve the light emitting efficiency of the light emitting unit and the display effect of the display panel without causing light crosstalk between different light emitting units. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the provided drawings.

[0023] Figure 1 FIG. 1 is a cross-sectional view of a display panel in the prior art;

[0024] Figure 2 FIG. 2 is a cross-sectional view of a display panel according to an embodiment of the present application;

[0025] Figure 3 FIG. 3 is a cross-sectional view of another display panel according to an embodiment of the present application;

[0026] Figure 4 FIG. 4 is a cross-sectional view of still another display panel according to an embodiment of the present application;

[0027] Figure 5 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0028] Figure 6 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0029] Figure 7A A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0030] Figure 7B A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0031] Figure 8 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0032] Figure 9 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0033] Figure 10 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0034] Figure 11 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0035] Figure 12 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0036] Figure 13 A top view schematic view of a display panel according to an embodiment of the present application is provided;

[0037] Figure 14 A top view schematic view of yet another display panel according to an embodiment of the present application is provided;

[0038] Figure 15 A top view schematic view of yet another display panel according to an embodiment of the present application is provided;

[0039] Figure 16 A top view schematic view of yet another display panel according to an embodiment of the present application is provided;

[0040] Figure 17 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0041] Figure 18 A cross-sectional schematic view of yet another display panel according to an embodiment of the present application is provided;

[0042] Figure 19A cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0043] Figure 20 A schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present invention;

[0044] Figures 21-23 for Figure 20 A schematic diagram of a portion of the structure corresponding to the manufacturing method shown;

[0045] Figure 24 A schematic flowchart illustrating another method for manufacturing a display panel according to an embodiment of the present invention;

[0046] Figure 25 for Figure 24 A schematic diagram of a portion of the structure corresponding to the manufacturing method shown;

[0047] Figure 26 A flowchart illustrating another method for manufacturing a display panel according to an embodiment of the present invention;

[0048] Figure 27 A flowchart illustrating another method for manufacturing a display panel according to an embodiment of the present invention;

[0049] Figure 28 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Based on the content recorded in the background art, refer to Figure 1 , Figure 1 This is a cross-sectional schematic diagram of a display panel in the prior art, such as... Figure 1 As shown, a light-shielding structure 03 is provided between the light-emitting units 02 on the substrate 01. The light-shielding structure 03 absorbs all the side light emitted by the light-emitting units 02 to prevent light crosstalk between different light-emitting units 02.

[0052] However, because the light-blocking structure 03 absorbs the side light from the light-emitting unit 02, the effective light output of the light-emitting unit is only the light emitted at the front viewing angle. The side light is clearly wasted and not utilized effectively. Therefore, it can be seen that... Figure 1The display panel structure shown here affects the light emission efficiency of the light-emitting units, thus impacting the display panel's performance. Furthermore, the viewing angle significantly deteriorates at non-normal viewing angles.

[0053] Based on this, the present invention provides a novel display panel that, while ensuring that there is no optical crosstalk between different light-emitting units, can also make reasonable use of the side light of the light-emitting units to improve the light emission efficiency of the light-emitting units, thereby improving the display effect of the display panel.

[0054] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] refer to Figure 2 , Figure 2 This is a cross-sectional schematic diagram of a display panel provided in an embodiment of the present invention.

[0056] The display panel includes: a light path adjustment layer 11, with a plurality of first grooves 12.

[0057] The light-emitting unit 13 is located in the first groove 12.

[0058] The first receiving electrode 14 and the second receiving electrode 15 are located at least on the inner sidewall of the first groove 12.

[0059] The light-emitting unit 13 includes a first electrode 131 and a second electrode 132. The first electrode 131 is electrically connected to the first receiving electrode 14, and the second electrode 132 is electrically connected to the second receiving electrode 15.

[0060] The first receiving electrode 14 reflects the light incident on the first receiving electrode 14 by the light-emitting unit 13, and the second receiving electrode 15 reflects the light incident on the second receiving electrode 15 by the light-emitting unit 13.

[0061] Specifically, such as Figure 2 As shown, the display panel includes a substrate 16, which may be a flexible insulating material with properties such as stretchability, bendability, or flexibility. The material includes, but is not limited to, polyimide (PI), polycarbonate (PC), or polyethylene terephthalate (PET). Alternatively, the substrate 16 may include a rigid substrate such as glass.

[0062] The optical path adjusting layer 11 is located on one side of the substrate 16, and a plurality of first grooves 12 are arranged on the side of the optical path adjusting layer 11 away from the substrate 16. The first grooves 12 do not penetrate the optical path adjusting layer, that is, the maximum depth of the first grooves 12 in the first direction is less than the thickness of the optical path adjusting layer 11. The first direction is perpendicular to the plane on which the substrate 16 is located.

[0063] It should be noted that the number of first grooves 12 and the spacing between adjacent two first grooves 12 and the like can be reasonably set based on the actual display requirements of the display panel, and are not limited in the embodiment of the present application, and are only illustrated by taking two first grooves as an example.

[0064] As shown in the figure, Figure 2 The light emitting unit 13 is located in the first groove 12, and the first groove 12 achieves the purpose of isolating the light emitting unit 13. Further, the surface of the light emitting unit 13 away from the optical path adjusting layer 11 is located inside the first groove 12, that is, the light emitting unit 13 is completely located inside the first groove 12, solving the problem of light crosstalk between different light emitting units 13. In order to prevent the light emitted by the light emitting unit 13 from passing through the optical path adjusting layer 11 and causing light crosstalk, the material of the optical path adjusting layer 11 at least includes a light-absorbing material to maximize the solution to the problem of light crosstalk between different light emitting units 13. In addition, it can also play a role of anti-reflection to reduce the reflection of external environmental light.

[0065] It should be noted that one first groove 12 is used to accommodate at least one light emitting unit 13, that is, one first groove 12 can also accommodate two or more light emitting units 13. When one first groove 12 accommodates two or more light emitting units 13, the colors of the light emitted by all the light emitting units 13 in one first groove 12 are the same.

[0066] It should be noted that one first groove 12 is used to accommodate one light emitting unit 13 in the embodiment of the present application.

[0067] As shown in the figure, Figure 2 The light emitting unit 13 has lateral light output around it in addition to the light output at the normal viewing angle. In order to reasonably utilize the lateral light to improve the light emitting efficiency of the light emitting unit 13, the first receiving electrode 14 and the second receiving electrode 15 are arranged in the embodiment of the present application. The first receiving electrode 14 and the second receiving electrode 15 are located at least on the inner side wall of the first groove 12. The first receiving electrode 14 reflects the light incident on the first receiving electrode from the light emitting unit 13 to be emitted in a direction tending to the normal viewing angle. The second receiving electrode 15 reflects the light incident on the second receiving electrode 15 from the light emitting unit 13 to be emitted in a direction tending to the normal viewing angle.

[0068] The light-emitting unit 13 may include a light-emitting diode (LED), the size of which may be less than 200 micrometers, further less than 100 micrometers, less than 50 micrometers, or even less than 10 micrometers. The light-emitting unit 13 may be disposed in the display panel by means of transfer printing.

[0069] In this embodiment, the first electrode 131 of the light-emitting unit 13 is electrically connected to the first receiving electrode 14, and the second electrode 132 of the light-emitting unit 13 is electrically connected to the second receiving electrode 15. In one embodiment, the first electrode 131 and the second electrode 132 are respectively the positive electrode and the negative electrode of the LED.

[0070] In other words, when the first receiving electrode 14 and the second receiving electrode 15 connect the light-emitting unit 13 to the external circuit, they can also reflect the lateral light emitted by the light-emitting unit 13 to improve the light emission efficiency of the light-emitting unit 13.

[0071] Therefore, the display panel provided in this embodiment of the invention can improve the light emission efficiency of the light-emitting unit by making reasonable use of the side light of the light-emitting unit 13 while ensuring that there is no light crosstalk between different light-emitting units 13, thereby improving the display effect of the display panel.

[0072] Optionally, in another embodiment of the invention, reference is made to... Figure 3 , Figure 3 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention.

[0073] The display panel also includes an array layer 17 located between the substrate 16 and the optical path adjustment layer 11.

[0074] Specifically, the array layer 17 is also called a TFT (Thin Film Transistor) layer, which is used to control the working state of the light-emitting unit 13.

[0075] like Figure 3 As shown, the array layer 17 includes a plurality of thin-film transistors 18; wherein, each thin-film transistor 18 includes an active layer 181, a gate 182, a source 183, and a drain 184. The array layer 17 further includes a gate insulating layer 19 disposed between the active layer 181 and the gate 182, an interlayer insulating layer 20 disposed between the gate 182 and the source 183 and the drain 184, a passivation layer 21 disposed on the side of the source 183 and the drain 184 away from the interlayer insulating layer 20, and a planarization layer 22 disposed on the side of the passivation layer 21 away from the interlayer insulating layer 20. The optical path adjustment layer 11 is disposed on the side of the planarization layer 22 away from the substrate 16.

[0076] It should be noted that the source electrode 183 and the drain electrode 184 are located in the same layer.

[0077] It should be noted that the thin film transistor 18 in the embodiment of the present application can be a P-type thin film transistor or an N-type thin film transistor. In the embodiment of the present application, the P-type thin film transistor is taken as an example for illustration.

[0078] When the thin film transistor 18 is a P-type thin film transistor, the first receiving electrode 14 or the second receiving electrode 15 is connected with the drain electrode of the P-type thin film transistor.

[0079] When the thin film transistor 18 is an N-type thin film transistor, the first receiving electrode 14 or the second receiving electrode 15 is connected with the source electrode of the N-type thin film transistor.

[0080] The specific connection mode is shown in Figure 3 The through hole is formed by etching the light path adjusting layer 11, the planarization layer 22 and the passivation layer 21 to expose the corresponding electrode end of the thin film transistor 18, so that the first receiving electrode 14 or the second receiving electrode 15 is in contact with the corresponding electrode end of the thin film transistor 18.

[0081] It should be noted that the first receiving electrode 14 is connected with one electrode end of the thin film transistor 18 in the embodiment of the present application.

[0082] Optionally, as shown in Figure 3 The display panel can further include a buffer layer 23 between the substrate 16 and the array layer 17.

[0083] The buffer layer 23 includes but is not limited to an inorganic material layer or an organic material layer. The material of the inorganic material layer includes but is not limited to silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide or aluminum nitride, etc. The material of the organic material layer includes but is not limited to acrylic or PI, etc.

[0084] Optionally, in another embodiment of the present application, referring to Figure 4 , Figure 4 Another cross-sectional view of a display panel provided in the embodiment of the present application is shown.

[0085] The light path adjusting layer 11 further includes a second groove 24, which is located at the bottom of the first groove 12 and penetrates the first groove 12.

[0086] Referring to Figure 5 , Figure 5A cross-sectional schematic view of still another display panel according to an embodiment of the present application is provided. In the arrangement direction of the first receiving electrode and the second receiving electrode, the size L1 of the opening of the second groove 24 is smaller than the size L2 of the opening of the first groove 12.

[0087] The first receiving electrode 14 and the second receiving electrode 15 are arranged at intervals in the position of the second groove 21.

[0088] Specifically, as shown in Figure 4 and Figure 5 The second groove 24 is used to separate the first receiving electrode 14 and the second receiving electrode 15 from each other, so as to avoid the interconnection of the first receiving electrode 14 and the second receiving electrode 15, thereby improving the control effect of the light emitting unit 13, that is, avoiding the situation that the light emitting unit 13 cannot work normally due to the interconnection of the first receiving electrode 14 and the second receiving electrode 15, thereby improving the display performance of the display panel.

[0089] Optionally, in another embodiment of the present application, referring to Figure 6 , Figure 6 A cross-sectional schematic view of still another display panel according to an embodiment of the present application is provided.

[0090] The display panel further comprises:

[0091] The reflection part 25 is located at the bottom surface of the second groove 24, and the material of the reflection part 25 is the same as that of the first receiving electrode 14 and the second receiving electrode 15.

[0092] Specifically, the reflection part 25 is used to reflect the light incident on the reflection part 25. The light incident on the reflection part 25 mainly includes the light emitted by the light emitting unit 13 and the light reflected by the first receiving electrode 14 and the second receiving electrode 15. These lights incident on the reflection part 25 are reflected by the reflection part 25 again to be emitted in the direction of the normal viewing angle, so as to maximize the light emitting efficiency of the light emitting unit 13 and finally improve the display effect of the display panel.

[0093] Optionally, the material of the reflection part 25 is the same as that of the first receiving electrode 14 and the second receiving electrode 15, so as to simplify the manufacturing process.

[0094] Optionally, in another embodiment of the present application, referring to Figure 7A , Figure 7A A cross-sectional schematic view of still another display panel according to an embodiment of the present application is provided.

[0095] The included angle a between the side wall of the second groove 24 and the bottom of the second groove 24 is less than or equal to 90°.

[0096] Specifically, in this application, the first electrode 131 and the second electrode 132 of the light-emitting unit 13 are located on the same side. In order to prevent the first receiving electrode 14 and the second receiving electrode 15 from interconnecting at the bottom of the second groove 24 during the formation of the first receiving electrode 14 and the second receiving electrode 15, in this embodiment of the invention, the included angle α between the side wall of the second groove 24 and the bottom of the second groove 24 is set to be less than or equal to 90°, so as to form a groove shape with an opening size smaller than the bottom size, thereby avoiding the first receiving electrode 14 and the second receiving electrode 15 from interconnecting at the bottom of the second groove 24.

[0097] Furthermore, when forming the first receiving electrode 14 and the second receiving electrode 15, the second groove 24 allows the two receiving electrodes to naturally separate at the groove opening, thus avoiding etching at this location. Figure 6 The metal portion remaining at the bottom of the second groove 24 can be reused as a reflective component.

[0098] refer to Figure 7B , Figure 7B This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention. The display panel includes: a light path adjustment layer 11 with a plurality of first grooves 12; a light-emitting unit 13 located in the first groove 12; and a first receiving electrode 14 located at least on the inner sidewall of the first groove 12. The light-emitting unit 13 includes a first electrode 131 and a second electrode 132, which are disposed opposite to each other in a direction perpendicular to the light path adjustment layer 11. The first electrode 131 is electrically connected to the first receiving electrode 14, and the first receiving electrode 14 reflects the light incident on the first receiving electrode 14 from the light-emitting unit 13. The light path adjustment layer 11 also has a second groove 24 located at the bottom of the first groove 12 and communicating with the first groove 12. The included angle α between the sidewall and the bottom of the second groove 24 can be greater than 90°. The first receiving electrode 14 includes not only the part covering the sidewall of the first groove 12, but also the part covering the bottom and sidewall of the second groove 24. The part of the first receiving electrode 14 covering the second groove 24 is located directly below the light-emitting unit 13. Combined with the included angle between the bottom surface and the sidewall of the second groove 24, the reflectivity of the light emitted below the light-emitting unit 13 can be improved, thereby improving the light emission efficiency of the light-emitting unit 13.

[0099] Optionally, in another embodiment of the invention, reference is made to... Figure 8 , Figure 8 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 9 , Figure 9 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention.

[0100] The display panel also includes:

[0101] A transparent filler 26 fills at least the first groove 12 and covers the light-emitting unit 13.

[0102] Specifically, as shown in FIG. 1, when the light path adjustment layer 11 in the display panel only has the first groove 12, the transparent filler 26 only fills the first groove 12. Figure 8 Figure 9 As shown in FIG. 2, when the light path adjustment layer 11 in the display panel has both the first groove 12 and the second groove 24, the transparent filler 26 fills the first groove 12 and the second groove 24.

[0103] It should be noted that in the present application, the transparent filler 26 is filled in the first groove 12 or the first groove 12 and the second groove 24 by means of IJP (Ink Jet Printing) printing, but is not limited thereto.

[0104] In order to ensure the light-emitting effect of the light-emitting unit 13, the material of the transparent filler 26 needs to have at least the characteristics of high transmittance.

[0105] Firstly, the transparent filler 26 can further fix the light-emitting unit 13, prevent the light-emitting unit 13 from shaking or tilting, and improve the light-emitting effect of the light-emitting unit 13.

[0106] Secondly, by reasonably setting the surface shape of the transparent filler 26 at the opening of the first groove 12, the purpose of improving the viewing angle can be achieved, and the specific principle is as follows:

[0107] As shown in FIG. 3, after the transparent filler 26 is cured, the surface of the transparent filler 26 on the side away from the light path adjustment layer 11 in the first groove 12 is an arc surface, and the vertex of the arc surface is slightly higher or slightly lower than the surface of the light path adjustment layer 11. At this time, the transparent filler 26 can play the role of a lens, and the viewing angle can be improved by controlling the surface arc. Figure 9 Alternatively, as shown in FIG. 4, after the transparent filler 26 is cured, the surface of the transparent filler 26 on the side away from the light path adjustment layer 11 in the first groove 12 is a convex arc surface.

[0108] Figure 9 Alternatively, as shown in FIG. 5, after the transparent filler 26 is cured, the surface of the transparent filler 26 on the side away from the light path adjustment layer 11 in the first groove 12 is a concave arc surface.

[0109] Alternatively, as shown in FIG. 6, after the transparent filler 26 is cured, the surface of the transparent filler 26 on the side away from the light path adjustment layer 11 in the first groove 12 is a convex arc surface. Figure 10 Figure 10 As shown in FIG. 7, after the transparent filler 26 is cured, the surface of the transparent filler 26 on the side away from the light path adjustment layer 11 in the first groove 12 is a concave arc surface.​​​

[0110] Optionally, in another embodiment of the present application, referring to Figure 11 , Figure 11 A cross-sectional schematic view of yet another display panel is provided for an embodiment of the present application.

[0111] The light emitting unit 13 comprises a first light emitting unit 13A and a second light emitting unit 13B, the light emitting efficiency of the first light emitting unit 13A is less than that of the second light emitting unit 13B.

[0112] The arc surface of the transparent filler 26 on the side away from the light path adjusting layer 11 is a convex arc surface.

[0113] The curvature of the convex arc surface of the transparent filler 26 corresponding to the first light emitting unit 13A is greater than that of the convex arc surface of the transparent filler 26 corresponding to the second light emitting unit 13B.

[0114] Specifically, the light emitting efficiency of the first light emitting unit 13A is less than that of the second light emitting unit 13B, so the curvature of the convex arc surface of the transparent filler 26 corresponding to the first light emitting unit 13A is set to be greater than that of the convex arc surface of the transparent filler 26 corresponding to the second light emitting unit 13B, which can consider setting the distance H1 between the vertex of the convex arc surface of the transparent filler 26 corresponding to the first light emitting unit 13A and the light path adjusting layer to be greater than the distance H2 between the vertex of the convex arc surface of the transparent filler 26 corresponding to the second light emitting unit 13B to realize the curvature size relationship, so as to increase the light collecting effect of the light emitted by the first light emitting unit 13A, thereby indirectly improving the light emitting efficiency of the first light emitting unit 13A.

[0115] Optionally, in another embodiment of the present application, referring to Figure 12 , Figure 12 A cross-sectional schematic view of yet another display panel is provided for an embodiment of the present application.

[0116] The light emitting unit 13 comprises a first light emitting unit 13A, a second light emitting unit 13B and a third light emitting unit 13C, the light emitting efficiency of the first light emitting unit 13A is less than that of the second light emitting unit 13B, which is less than that of the third light emitting unit 13C.

[0117] The arc surface of the transparent filler 26 on the side away from the light path adjusting layer 11 is a convex arc surface.

[0118] The curvature of the convex arc surface of the transparent filler 26 corresponding to the first light emitting unit 13A is greater than that of the convex arc surface of the transparent filler 26 corresponding to the second light emitting unit 13B, which is greater than that of the convex arc surface of the transparent filler 26 corresponding to the third light emitting unit 13C.

[0119] Specifically, the light emitting efficiency of the first light emitting unit 13A is less than the light emitting efficiency of the second light emitting unit 13B, and the light emitting efficiency of the second light emitting unit 13B is less than the light emitting efficiency of the third light emitting unit 13B. Therefore, the distance H1 between the vertex of the convex arc surface of the transparent filler 26 corresponding to the first light emitting unit 13A and the light path adjustment layer is set to be greater than the distance H2 between the vertex of the convex arc surface of the transparent filler 26 corresponding to the second light emitting unit 13B and the light path adjustment layer, and greater than the distance H3 between the vertex of the convex arc surface of the transparent filler 26 corresponding to the third light emitting unit 13C and the light path adjustment layer. That is, in the embodiment of the present application, the curvature of the convex arc surface of the corresponding transparent filler 26 is reasonably adjusted based on the light emitting units 13 with different light emitting efficiencies, so as to achieve different light emitting effects, thereby improving the display effect of the display panel as a whole.

[0120] Optionally, in another embodiment of the present application, referring to Figure 13 , Figure 13 a top view of a display panel provided by an embodiment of the present application.

[0121] The light path adjustment layer 12 further comprises a third groove 27, and the third groove 27 is connected with two adjacent first grooves 12.

[0122] Optionally, the width of the third groove 27 is less than the size of the opening of the first groove 12.

[0123] Specifically, the third groove 27 is connected with two adjacent first grooves 12 through the second groove, as shown in Figure 13 The third groove 27 is connected with the plurality of first grooves 12 in the row in sequence.

[0124] It should be noted that the light emitting units 13 placed in the plurality of first grooves 12 in the row belong to the same kind of light emitting unit 13, that is, all the light emitting units 13 emit light of the same color; or the light emitting units 13 placed in the plurality of first grooves 12 in the row belong to two or more kinds of light emitting units 13, that is, a part of the light emitting units 13 emit light of the first color, another part of the light emitting units 13 emit light of the second color, and the light emitting units 13 emit light of the third color, etc., the colors of the light of the first color, the light of the second color and the light of the third color are different from each other. Among them, the light of the first color, the light of the second color and the light of the third color can be selected from red light, green light and blue light respectively.

[0125] Optionally, referring to Figure 14 , Figure 14 a top view of another display panel provided by an embodiment of the present application, the third groove 27 is connected with the plurality of first grooves 12 in the row in sequence.

[0126] Similarly, the light emitting units 13 placed in the plurality of first grooves 12 in a row belong to the same kind of light emitting unit 13, that is, all the light emitting units 13 emit light of the same color; or the light emitting units 13 placed in the plurality of first grooves 12 in a row belong to two or more kinds of light emitting units 13, that is, a part of the light emitting units 13 emit light of a first color, another part of the light emitting units 13 emit light of a second color, and the light emitting units 13 emit light of a third color, and so on, the colors of the first color light, the second color light and the third color light are different from each other.

[0127] Optionally, referring to Figure 15 , Figure 15 A top view schematic diagram of another display panel provided by an embodiment of the present application is shown in FIG. 6. In a column or a row, part of the first grooves 12 are sequentially communicated by the third grooves 27, and the rest of the first grooves 12 are sequentially communicated by the third grooves 27.

[0128] Optionally, referring to Figure 16 , Figure 16 A top view schematic diagram of another display panel provided by an embodiment of the present application is shown in FIG. 6. In a column or a row, part of the first grooves 12 are sequentially communicated by the third grooves 27, and the rest of the first grooves 12 are sequentially communicated by the third grooves 27. Figure 16

[0129] In this embodiment, by setting the third grooves to communicate at least two first grooves, when forming the transparent filler, as shown in Figure 13 , Figure 14 and Figure 15 , the transparent filler material is injected at one end of the third grooves 27, and then solidified after flowing into the plurality of first grooves 12, so that the transparent filler does not need to be filled in each first groove 12 one by one, thereby greatly improving the convenience of the process.

[0130] Similarly, as shown in Figure 16 , in the case of cross communication, the transparent filler material can be injected at the intersection point of the cross communication, thereby realizing simultaneous filling of the five first grooves 12.

[0131] It should be noted that for the communication mode not embodied in the present application, an optimal material injection point can be selected based on the actual situation to realize simultaneous filling of the plurality of first grooves 12.

[0132] ​Further, since the heights of the convex arc surfaces of the transparent fillers 26 corresponding to the light emitting units 13 with different light emitting efficiencies are different, in an embodiment of the present application, the first grooves 12 in which the light emitting units 13 with the same light emitting color are located are connected by the third grooves 27, that is, the light emitting units 13 corresponding to the adjacent two first grooves 12 connected with the third grooves 27 have the same light emitting color; by controlling the injection amount and the injection time, the heights of the convex arc surfaces of the transparent fillers 26 corresponding to the light emitting units 13 with the same light emitting color connected by the third grooves 27 can be ensured to be the same. The injection of the light emitting units 13 with different light emitting colors only needs to control the injection amount and / or the injection time and the like to realize different convex heights.

[0133] Further, the first grooves 12 corresponding to the first light emitting units and the first grooves 12 corresponding to the second light emitting units are connected by the third grooves in a cross connection manner; assuming that the curvature of the convex arc surface of the transparent filler corresponding to the first light emitting unit needs to be greater than the curvature of the convex arc surface of the transparent filler corresponding to the second light emitting unit, in the case that the width of the third groove is unchanged, the depth of the third groove connected with the first light emitting unit is made to be less than the depth of the third groove connected with the second light emitting unit, then in the case of the same injection amount and / or the same injection time, after the injection is completed, it can be ensured that the curvature of the convex arc surface of the transparent filler corresponding to the first light emitting unit is greater than the curvature of the convex arc surface of the transparent filler corresponding to the second light emitting unit; or, in the case that the depth of the third groove is unchanged, the width of the third groove connected with the first light emitting unit is made to be less than the width of the third groove connected with the second light emitting unit, then in the case of the same injection amount and / or the same injection time, after the injection is completed, it can be ensured that the curvature of the convex arc surface of the transparent filler corresponding to the first light emitting unit is greater than the curvature of the convex arc surface of the transparent filler corresponding to the second light emitting unit.

[0134] Optionally, in another embodiment of the present application, referring to Figure 17 , Figure 17 a cross-sectional schematic view of another display panel provided by the embodiment of the present application.

[0135] The opening sizes of the first grooves corresponding to each of the light emitting units 13 are the same, which can improve the convenience of the process of the first grooves 12, that is, Figure 17 M1=M2 shown in the above embodiment.

[0136] However, in the process of the present application, it is considered that there is a difference in the light emitting efficiency of the light emitting units with different light emitting colors, for example, the light emitting units 13 include first light emitting units 13A and second light emitting units 13B, and the light emitting efficiency of the first light emitting units 13A is less than the light emitting efficiency of the second light emitting units 13B.

[0137] Then, referring toFigure 18 , Figure 18 The cross-sectional schematic view of the display panel provided by the embodiment of the present application can make the opening size Q1 of the first recess 12 corresponding to the first light emitting unit 13A greater than the opening size Q2 of the first recess 12 corresponding to the second light emitting unit 13B, that is, by setting the opening size of the first recess 12, the light emitting area of the light emitting unit with lower light emitting efficiency is increased, and the display effect of the display panel is further improved.

[0138] Optionally, in another embodiment of the present application, as shown in Figure 2 The cross section of the first recess 12 is semicircular, and based on the design of the inner side wall of the semicircular shape, most of the light incident on the first receiving electrode 14 and the second receiving electrode 15 tends to be emitted in the direction of the normal viewing angle, and the light emitting efficiency of the light emitting unit and the display effect of the display panel are maximized.

[0139] Optionally, in another embodiment of the present application, referring to Figure 19 , Figure 19 The cross-sectional schematic view of the display panel provided by the embodiment of the present application is a reverse trapezoidal shape.

[0140] By the structure design of the reverse trapezoidal shape, the stability of the light emitting unit 13 can be improved, and the Bonding of the light emitting unit 13 with the first bonding electrode 14 and the second bonding electrode 15 is more favorable.

[0141] It should be noted that the cross section of the first recess 12 can also be a rectangular shape, and is not limited in the embodiment of the present application.

[0142] Optionally, based on all the above embodiments of the present application, in another embodiment of the present application, a manufacturing method of a display panel is further provided, referring to Figure 20 , Figure 20 The flowchart of the manufacturing method of the display panel provided by the embodiment of the present application is shown.

[0143] The manufacturing method comprises:

[0144] S101: as shown in Figure 21 and Figure 22 , a light path adjusting layer 11 is formed, and a plurality of first recesses 12 are arranged on the light path adjusting layer 11.

[0145] In this step, a substrate 16 is first provided, the light path adjusting layer 11 is formed on the substrate 16, and the light path adjusting layer 11 is then processed to form a plurality of first recesses 12. The size and shape of the plurality of first recesses 12 are not limited in this step.

[0146] S102: as shown in Figure 23As shown, a first receiving electrode 14 and a second receiving electrode 15 are formed on at least the inner side wall of the first groove 12.

[0147] In this step, the first receiving electrode 14 and the second receiving electrode 15 are made of the same material.

[0148] S103: As Figure 2 As shown, the light emitting unit 13 is arranged in the first groove 12, the light emitting unit 13 includes a first electrode 131 and a second electrode 132, the first electrode 131 is electrically connected with the first receiving electrode 14, and the second electrode 132 is electrically connected with the second receiving electrode 15; wherein the first receiving electrode 14 reflects the light emitted by the light emitting unit 13 and incident on the first receiving electrode 14, and the second receiving electrode 15 reflects the light emitted by the light emitting unit 13 and incident on the second receiving electrode 15.

[0149] In this embodiment, the light emitting unit 13 is located in the first groove 12, and the first groove 12 is used to isolate the light emitting unit 13. Further, the surface of the light emitting unit 13 away from the light path adjustment layer 11 is located inside the first groove 12, that is, the light emitting unit 13 is completely located inside the first groove 12, thereby solving the problem of light crosstalk between different light emitting units 13. In order to prevent the light emitted by the light emitting unit 13 from passing through the light path adjustment layer 11 and causing light crosstalk, the material of the light path adjustment layer 11 at least includes a light-absorbing material, so as to solve the problem of light crosstalk between different light emitting units to the greatest extent.

[0150] It should be noted that one first groove 12 is used to accommodate at least one light emitting unit 13, that is, one first groove 12 can also accommodate two or more light emitting units 13. When one first groove 12 accommodates two or more light emitting units 13, the colors of the light emitted by all the light emitting units 13 in one first groove 12 are the same.

[0151] It should be noted that in the embodiment of the present application, one first groove 12 is used to accommodate one light emitting unit 13.

[0152] As Figure 2As shown, while ensuring light emission from the light-emitting unit 13 at a positive viewing angle, it also emits side light from its surroundings. In order to make reasonable use of this side light to improve the light emission efficiency of the light-emitting unit 13, a first receiving electrode 14 and a second receiving electrode 15 are provided in this embodiment of the invention. The first receiving electrode 14 and the second receiving electrode 15 are located at least on the inner sidewall of the first groove 12. The first receiving electrode 14 reflects the light incident on the light-emitting unit 13 and emits it in a direction that tends towards the positive viewing angle. The second receiving electrode 15 reflects the light incident on the light-emitting unit 13 and emits it in a direction that tends towards the positive viewing angle.

[0153] The first electrode 131 of the light-emitting unit 13 is electrically connected to the first receiving electrode 14, and the second electrode 132 of the light-emitting unit 13 is electrically connected to the second receiving electrode 15.

[0154] In other words, when the first receiving electrode 14 and the second receiving electrode 15 connect the light-emitting unit 13 to the external circuit, they can also perform emission processing on the lateral light emitted by the light-emitting unit 13 to improve the light emission efficiency of the light-emitting unit.

[0155] Therefore, it can be seen that the display panel formed by the manufacturing method provided in the embodiments of the present invention can improve the light emission efficiency of the light-emitting unit by making reasonable use of the side light of the light-emitting unit while ensuring that there is no light crosstalk between different light-emitting units, thereby improving the display effect of the display panel.

[0156] Optionally, in another embodiment of the invention, reference is made to... Figure 24 , Figure 24 This is a flowchart illustrating another method for manufacturing a display panel according to an embodiment of the present invention.

[0157] Before step S102, that is, before forming the first receiving electrode 14 and the second receiving electrode 15, the fabrication method further includes:

[0158] S104: As Figure 25 As shown, a second groove 24 is provided on the optical path adjustment layer 11. The second groove 24 is located at the bottom of the first groove 12 and communicates with the first groove 12.

[0159] Therefore, step S102, which involves forming at least a first receiving electrode 14 and a second receiving electrode 15 on the inner wall of the first groove 12, includes:

[0160] S1021: As Figure 4As shown, an electrode film layer is formed on the light path adjusting layer 11, the electrode film layer at least includes a portion covering the inner sidewall of the first groove 12, and is disconnected at the second groove 24, the portion of the electrode film layer covering the inner sidewall of the first groove 12 includes the first receiving electrode 14 and the second receiving electrode 15.

[0161] In this embodiment, due to the design of the second groove 24, the electrode film layer can be automatically truncated to form the independent first mating electrode 14 and the second mating electrode 15, thereby simplifying the process of the first mating electrode 14 and the second mating electrode 15.

[0162] Optionally, in another embodiment of the present application, referring to Figure 26 , Figure 26 A flowchart of another method for manufacturing a display panel is provided in an embodiment of the present application.

[0163] The manufacturing method further includes:

[0164] S105: forming a transparent filler by injecting an organic material, the transparent filler at least fills the first groove and covers the light emitting unit.

[0165] Optionally, referring to Figure 27 , Figure 27 A flowchart of another method for manufacturing a display panel is provided in an embodiment of the present application, before forming the transparent filler, the manufacturing method further includes:

[0166] S106: processing the light path adjusting layer to form a third groove, the third groove connects two adjacent first grooves.

[0167] S107: the injected organic material flows from one first groove to another first groove through at least one third groove.

[0168] In this embodiment, by setting the third groove to communicate at least two first grooves, when forming the transparent filler, the organic material is injected at one end of the third groove and then solidified after flowing into the plurality of first grooves, so that the transparent filler does not need to be filled in each first groove one by one, thereby greatly improving the convenience of the process.

[0169] Optionally, based on all the above embodiments of the present application, in another embodiment of the present application, referring to Figure 28 , Figure 28 A structural diagram of a display device is provided in an embodiment of the present application.

[0170] The display device 100 includes the display panel described in the above embodiments.

[0171] Specifically, the display device 100 includes but is not limited to electronic devices such as tablets and mobile phones, and has the same features as the display panel provided in the above-mentioned embodiments of the present application.

[0172] The display panel, the manufacturing method thereof and the display device provided by the present application are described in detail above, and the principles and implementation manners of the present application are described by using specific examples. The above-mentioned embodiments are only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the present application. Therefore, the content of the present description should not be understood as a limitation of the present application.

[0173] It should be noted that each embodiment in the present description is described in a progressive manner, and each embodiment mainly describes the differences from other embodiments. The same or similar parts between embodiments can be understood by referring to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be understood by referring to the description of the method.

[0174] It should also be noted that, in the present text, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms “include”, “contain” or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device inherently includes a series of elements, or further includes the elements inherent to the process, method, article or device. Without more limitations, the element defined by the statement “including a…” does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0175] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized by, Comprising: a light path adjusting layer, a plurality of first grooves are arranged on the light path adjusting layer; a light emitting unit is arranged in the first groove; a first receiving electrode and a second receiving electrode are arranged on at least the inner side wall of the first groove; the light emitting unit comprises a first electrode and a second electrode, the first electrode is electrically connected with the first receiving electrode, and the second electrode is electrically connected with the second receiving electrode; the first receiving electrode reflects the light emitted by the light emitting unit and incident on the first receiving electrode, and the second receiving electrode reflects the light emitted by the light emitting unit and incident on the second receiving electrode; the display panel further comprises: a transparent filler, which fills at least the first groove and covers the light emitting unit; the light path adjusting layer further comprises a second groove arranged at the bottom of the first groove and penetrating the first groove; the light path adjusting layer further comprises a third groove, and the third groove is connected with two adjacent first grooves through the second groove.

2. The display panel of claim 1, wherein in the arrangement direction of the first receiving electrode and the second receiving electrode, the size of the opening of the second groove is smaller than the size of the opening of the first groove.

3. The display panel of claim 2, wherein the first receiving electrode and the second receiving electrode are arranged at intervals at the position of the second groove.

4. The display panel of claim 3, wherein, further comprising: a reflecting part arranged at the bottom surface of the second groove, and the material of the reflecting part is the same as the material of the first receiving electrode and the second receiving electrode.

5. The display panel of claim 2, wherein the included angle between the side wall of the second groove and the bottom of the second groove is less than or equal to 90°.

6. The display panel of claim 1, wherein in the first groove, the surface of the side of the transparent filler away from the light path adjusting layer is an arc surface.

7. The display panel of claim 6, wherein the light emitting unit comprises a first light emitting unit and a second light emitting unit, and the light emitting efficiency of the first light emitting unit is less than the light emitting efficiency of the second light emitting unit; the arc surface of the side of the transparent filler away from the light path adjusting layer is a convex arc surface; the curvature of the convex arc surface of the transparent filler corresponding to the first light emitting unit is greater than the curvature of the convex arc surface of the transparent filler corresponding to the second light emitting unit.

8. The display panel of claim 1, wherein the width of the third groove is less than the size of the opening of the first groove.

9. The display panel of claim 1, wherein the light emitting units corresponding to the two adjacent first groves connected with the third groove have the same light emitting color.

10. The display panel of claim 1, wherein the light emitting unit comprises a first light emitting unit and a second light emitting unit, and the light emitting efficiency of the first light emitting unit is less than the light emitting efficiency of the second light emitting unit; the size of the opening of the first groove corresponding to the first light emitting unit is greater than the size of the opening of the first groove corresponding to the second light emitting unit.

11. The display panel of claim 1, wherein The cross section of the first groove is semicircular or inverted trapezoidal.

12. The display panel of claim 1, wherein, The side surface of the light emitting unit away from the light path adjustment layer is located inside the first groove.

13. The display panel of claim 1, wherein, The material of the light path adjustment layer comprises light-absorbing material.

14. A manufacturing method of a display panel, comprising: Comprising: forming a light path adjustment layer, and disposing a plurality of first grooves on the light path adjustment layer; forming a first receiving electrode and a second receiving electrode on at least the inner side wall of the first groove; disposing a light emitting unit in the first groove, the light emitting unit comprising a first electrode and a second electrode, the first electrode being electrically connected to the first receiving electrode, and the second electrode being electrically connected to the second receiving electrode; wherein the first receiving electrode reflects light incident on the first receiving electrode from the light emitting unit, and the second receiving electrode reflects light incident on the second receiving electrode from the light emitting unit; forming a transparent filler, the transparent filler filling at least the first groove and covering the light emitting unit; before forming the first receiving electrode and the second receiving electrode, further comprising: disposing a second groove on the light path adjustment layer, the second groove being located at the bottom of the first groove and penetrating the first groove; before forming the transparent filler, further comprising: processing the light path adjustment layer to form a third groove, the third groove connecting two adjacent first grooves through the second groove; the injected organic material flows from one first groove to another first groove through at least one third groove to form the transparent filler.

15. The manufacturing method of claim 14, wherein, the forming a first receiving electrode and a second receiving electrode on at least the inner side wall of the first groove comprises: forming an electrode film layer on the light path adjustment layer, the electrode film layer at least comprising a portion covering the inner side wall of the first groove, and being broken at the second groove, the portion of the electrode film layer covering the inner side wall of the first groove comprising the first receiving electrode and the second receiving electrode.

16. A display device comprising: The display device comprises the display panel of any one of claims 1-13.

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