Display panel, method for manufacturing a display panel, and display device

Abstract

This application belongs to the field of display technologies, and discloses a display panel, a method for manufacturing the display panel, and a display device. The display panel includes a substrate, a light-emitting unit disposed on the substrate, a light-transmitting layer, and a light-transmitting pattern. An opening in the light-transmitting layer faces the light-emitting unit. The light-transmitting pattern includes a light-transmitting structure that covers the opening in the light-transmitting layer and a part of the light-transmitting layer. The light-transmitting structure and the opening in the light-transmitting layer can form a structure similar to a lens, thereby improving the light-emitting efficiency of the display panel. Since the light-transmitting pattern does not have a full-layer structure but includes a plurality of light-transmitting structures, it does not reduce the foldability of the display panel, solves the problem of poor foldability of the display panel in the related art, and realizes the improvement of the foldability effect of the display panel.

Description

[Technical Field]

[0001] The present application relates to the field of display technology, and more particularly to a display panel, a method for manufacturing a display panel, and a display device. [Background technology]

[0002] The display panel is a component that can realize image display functions. 。 Summary of the Invention

[0003] In the embodiments of the present application, a display panel, a manufacturing method for the display panel, and a display device are provided. The technical solutions are as follows: According to one aspect of the present invention, there is provided a display panel, The display panel includes a substrate, a plurality of light-emitting units, a light-transmitting layer, and a light-transmitting pattern; The plurality of light emitting units are disposed on the substrate; the light-transmitting layer is located on a substrate on which the plurality of light-emitting units are disposed, the light-transmitting layer has a plurality of apertures, and an orthogonal projection of a first light-emitting unit of the plurality of light-emitting units onto the substrate overlaps with an orthogonal projection of a first aperture of the plurality of apertures onto the substrate; The light-transmitting pattern is located on a substrate on which the light-transmitting layer is installed, and the light-transmitting pattern includes a plurality of light-transmitting structures, a first light-transmitting structure of the plurality of light-transmitting structures covers the first aperture and at least a portion of the light-transmitting layer, and the refractive index of the material of the light-transmitting pattern is greater than the refractive index of the material of the light-transmitting layer.

[0004] As one option, the first light-transmitting structure includes a first portion covered on the light-transmitting layer and a second portion located in the first aperture, and a height of the first portion in a first direction perpendicular to the substrate and away from the substrate is greater than a height of the second portion in the first direction.

[0005] Optionally, a top surface of the first portion of the first light-transmitting structure includes an arcuate surface that protrudes away from the substrate.

[0006] As one option, the side surface of the first portion is an inclined surface that slopes toward the center of the first aperture, and the inclination angle of the side surface of the first portion is 50 degrees or more.

[0007] As one option, the slope angle of the side surface of the first portion is in the range of 70 degrees to 80 degrees.

[0008] As one option, the hole wall of the first aperture in the light-transmitting layer is inclined in a direction away from the center of the first aperture, and the inclination angle of the hole wall is the critical angle of total reflection at the interface between the light-transmitting pattern and the light-transmitting layer.

[0009] As one option, the display panel has an effective display area and a peripheral area located outside the effective display area, and the light transmission pattern is located in the effective display area; The display panel further includes a target pattern disposed on a substrate on which the light emitting units are disposed; The target pattern is located in the peripheral region, and the refractive index of the material of the target pattern is greater than the refractive index of the material of the first light-transmitting layer.

[0010] As one option, the target pattern and the light-transmitting pattern have the same layer structure.

[0011] As one option, the target pattern includes at least one group of block-shaped structures, one of which includes a plurality of block structures arranged outside the effective display area along the edge of the effective display area.

[0012] As one option, the target pattern includes at least two of the block-shaped structure groups, and the at least two of the block-shaped structure groups are sequentially arranged in a direction away from the center of the display panel.

[0013] As one option, the target pattern includes stripe structures that are arranged outside the effective display area and extend along the edge of the effective display area.

[0014] As one option, the target pattern includes at least two of the stripe structures, and the at least two of the stripe structures are sequentially arranged outside the effective display area in a direction away from the center of the display panel.

[0015] Optionally, the dimensions of the blocking structure are the same as the dimensions of the light-transmitting structure.

[0016] As an alternative, the display panel further includes a first protrusion structure, the first protrusion structure being located in the aperture of the first light-transmitting layer; The first light-transmitting structure has a second protrusion structure at a portion covered by the first protrusion structure.

[0017] Optionally, the width of the striped structures ranges from 50 microns to 500 microns.

[0018] As an option, the display panel further includes a barrier dam located at an edge of the substrate; The orthogonal projection of the target pattern onto the substrate is located closer to the center of the display panel than the orthogonal projection of the barrier dam onto the substrate.

[0019] As an option, the display panel further includes a barrier dam located at an edge of the substrate; The target pattern is covered over the barrier dam.

[0020] Optionally, the light-transmitting structure is a color film layer; the display panel further includes a black matrix pattern disposed on a substrate on which the light-transmitting pattern is disposed, the black matrix pattern includes an opening area, and the orthogonal projection of the first opening of the light-transmitting layer onto the substrate is located within the orthogonal projection of the opening area onto the substrate;

[0021] As one option, the light-transmitting layer includes a first region covered by the first light-transmitting structure and a second region not covered by the first light-transmitting structure, and the thickness of the light-transmitting layer in the first region is greater than the thickness of the light-transmitting layer in the second region.

[0022] According to another aspect of the present invention, there is provided a method for manufacturing a seed display panel for manufacturing the above-mentioned display panel, the method comprising: obtaining a substrate; forming a plurality of light emitting units on the substrate; forming a light-transmitting layer on a substrate on which the plurality of light-emitting units are formed, the light-transmitting layer having a plurality of apertures, wherein an orthogonal projection of a first light-emitting unit of the plurality of light-emitting units onto the substrate is located within an orthogonal projection of a first aperture of the plurality of apertures onto the substrate; forming a light-transmitting material layer on the substrate on which the light-transmitting layer is formed, and a refractive index of the material of the light-transmitting material layer is greater than a refractive index of the material of the light-transmitting layer; performing a pattern construction process on the light-transmitting material layer to obtain a light-transmitting pattern, the light-transmitting pattern including a plurality of light-transmitting structures, a first light-transmitting structure of the plurality of light-transmitting structures covering the first aperture and at least a portion of the light-transmitting layer; Includes:

[0023] According to another aspect of the present invention, there is provided a display device, the display device including the display panel described above. 。

[0024] In order to more clearly explain the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. The drawings in the following description are only some embodiments of the present application, and it is obvious to those skilled in the art that other drawings can be obtained based on these drawings without any creative work. [Brief explanation of the drawings]

[0025] [Figure 1] FIG. 2 is a structural schematic diagram of a display panel. [Figure 2] 1 is a structural schematic diagram of a display panel provided in an embodiment of the present application; [Figure 3] FIG. 3 is a schematic diagram showing the planar structure of the display panel shown in FIG. [Figure 4] 3 is a schematic diagram showing another planar structure of the display panel shown in FIG. 2. FIG. [Figure 5] FIG. 2 is a structural schematic diagram of another display panel provided in an embodiment of the present application. [Figure 6] 6 is an enlarged schematic view of the structure of a partial region of the display panel shown in FIG. 5. [Figure 7] 1 is a schematic plan view of a display panel provided in an embodiment of the present application; [Figure 8] FIG. 2 is another schematic planar structural view of a display panel provided in an embodiment of the present application; [Figure 9] FIG. 9 is a schematic diagram showing the cross-sectional structure of the display panel shown in FIG. [Figure 10] 9 is a schematic diagram showing another cross-sectional structure of the display panel shown in FIG. 8. [Figure 11] 9 is a schematic diagram illustrating the structure of one pixel region in the display panel shown in FIG. 8. [Figure 12] FIG. 2 is a structural schematic diagram of another display panel provided in an embodiment of the present application. [Figure 13] 13 is a plan view of a first light-transmitting layer in the display panel shown in FIG. [Figure 14] FIG. 2 is a structural schematic diagram of another display panel provided in an embodiment of the present application. [Figure 15] FIG. 2 is a structural schematic diagram of another display panel provided in an embodiment of the present application. [Figure 16] 1 is a method flowchart of a method for manufacturing a display panel provided in an embodiment of the present application.

[0026] The embodiments set forth herein are illustrated by the drawings above and described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concepts of the present application in any way, but rather to explain the concepts to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION OF THE INVENTION

[0027] In order to make the objectives, technical solutions and advantages of the present application clearer, the following detailed description of the embodiments of the present application will be given in conjunction with the accompanying drawings. 。

[0028] The current display panel includes a substrate, a plurality of light-emitting units disposed on the substrate, and a first light-transmitting layer and a second light-transmitting layer disposed above the plurality of light-emitting units. The first light-transmitting layer has apertures facing the light-emitting units. The second light-transmitting layer is formed by an inkjet process, and fills the apertures of the first light-transmitting layer, forming a lens-like structure at the apertures to improve the light output efficiency of the display panel.

[0029] However, the display panel has poor bendability.

[0030] FIG. 1 is a schematic structural diagram of a display panel, in which the display panel 10 includes a substrate 11, a plurality of light-emitting units 12 (FIG. 1 shows only one light-emitting unit as an example) located on the substrate 11, a first light-transmitting layer 13 and a second light-transmitting layer 14 located on the substrate on which the plurality of light-emitting units 12 are installed.

[0031] Here, the light-emitting units 12 may include organic light-emitting diodes (OLEDs). The display panel 10 may include light-emitting units used to emit light of various colors, e.g., a red light-emitting unit used to emit red light, a blue light-emitting unit used to emit blue light, and a green light-emitting unit used to emit green light. These light-emitting units capable of emitting light of various colors enable the display panel to display images. After the display panel 10 is turned on, the light-emitting units 12 can emit light L, which can be emitted from the display panel 10 to realize the function of displaying images.

[0032] The first light-transmitting layer 13 has apertures 131 facing the light-emitting units 12, and the second light-transmitting layer 14 covers the first light-transmitting layer and fills the apertures 131. The refractive index of the material of the first light-transmitting layer 13 is smaller than that of the material of the second light-transmitting layer 14. The apertures 131 of the first light-transmitting layer 13 cooperate with the second light-transmitting layer 14 to form a lens-like structure, which can change the direction of the light beams emitted from the light-emitting units under the control of the structure, increasing the light beams irradiated within the visible range a and improving the light output efficiency of the display panel.

[0033] However, in the above-mentioned display panel, the second light-transmitting layer 14 has a full-layer structure, which reduces the bendability of the display panel. In addition, the second light-transmitting layer 14 is formed by forming a flowing film layer using an inkjet printing process, and then leveling and solidifying the film layer. The thickness of the light-transmitting layer formed by such a process is usually thick, which in turn increases the overall thickness of the display panel.

[0034] In the embodiments of the present application, a display panel, a manufacturing method of the display panel, and a display device are provided, Some Practices It can solve some of the problems that exist in

[0035] FIG. 2 is a structural schematic diagram of a display panel provided in an embodiment of the present application, which may include a substrate 21, a plurality of light-emitting units 22, a first light-transmitting layer 23, and a light-transmitting pattern 24.

[0036] A plurality of light emitting units 22 are disposed on a substrate 21 .

[0037] The first light-transmitting layer 23 is located on a substrate 21 on which a plurality of light-emitting units 22 are installed, and has a plurality of apertures k in the first light-transmitting layer 23, and the orthogonal projection of a first light-emitting unit 221 of the plurality of light-emitting units 22 onto the substrate 21 overlaps with the orthogonal projection of a first aperture k1 of the plurality of apertures k onto the substrate 21.

[0038] The light-transmitting pattern 24 is located on the substrate 21 on which the first light-transmitting layer 23 is installed, and the light-transmitting pattern 24 includes a plurality of light-transmitting structures 241, and a first light-transmitting structure 241a among the plurality of light-transmitting structures 241 covers the first aperture k1 and at least a portion of the first light-transmitting layer 23, and the refractive index of the material of the light-transmitting pattern 24 is greater than the refractive index of the material of the first light-transmitting layer 23.

[0039] Thus, the present invention provides a display panel including a substrate, a light-emitting unit disposed on the substrate, a first light-transmitting layer, and a light-transmitting pattern, wherein the apertures in the first light-transmitting layer face the light-emitting unit, and the light-transmitting pattern includes a light-transmitting structure that covers the apertures in the first light-transmitting layer and a portion of the first light-transmitting layer, and the light-transmitting structure and the apertures in the first light-transmitting layer can form a lens-like structure, thereby improving the light output efficiency of the display panel. The light-transmitting pattern is not a full-layer structure but includes multiple light-transmitting structures, which does not reduce the bendability of the display panel. Some Practices This solves the problem of poor bendability of the display panel in the LCD panel, and improves the bendability of the display panel.

[0040] Also, Some Practices In the display panel of the present application, the first light-transmitting layer is formed by forming a flowing film layer by an inkjet printing process, and then leveling and solidifying the film layer. The thickness of the first light-transmitting layer formed by such a process is usually thick, which in turn increases the overall thickness of the display panel. In contrast, in the display panel provided in the embodiment of the present application, the patterned light-transmitting pattern includes a plurality of light-transmitting structures. The light-transmitting pattern does not need to be formed by leveling and solidifying by an inkjet printing process, but can be formed by a pattern construction process. The thickness of the light-transmitting pattern can be reduced, thereby reducing the overall thickness of the display panel.

[0041] In the display panel provided in the embodiments of the present application, the aperture in the first light-transmitting layer and the upper light-transmitting structure form a structure similar to a double lens, which can together improve the light output efficiency of the display panel.

[0042] The display panel may also include an intermediate layer 27, which is located between the light-emitting unit 22 and the first light-transmitting layer 23. The intermediate layer 27 may include a multi-film layer structure, thereby realizing various functions such as protecting the light-emitting unit 22. For example, the intermediate layer 27 may include structures such as a package layer, a touch layer, and an insulating layer.

[0043] As shown in FIG. 3, FIG. 3 is a schematic planar structure diagram of the display panel shown in FIG. 2 (FIG. 2 may be a cross-sectional view of the display panel shown in FIG. 3 taken along E-E line). It can be seen that the plurality of light-transmitting structures 241 in the light-transmitting pattern 24 are arranged on the display panel, and the first light-transmitting structure may be one or more of the light-transmitting structures. Because the plurality of light-transmitting structures 241 are distributed on the display panel, the light-transmitting pattern 24 does not essentially restrict the bending of the display panel, thereby improving the bending ability of the display panel. Of course, in an exemplary embodiment, reference is made to FIG. 4, which is another schematic planar structure diagram of the display panel shown in FIG. 2 (FIG. 2 may be a cross-sectional view of the display panel shown in FIG. 4 taken along E-E line). Here, the plurality of light-transmitting structures 241 in the light-transmitting pattern 24 are arranged on the display panel, and these plurality of light-transmitting structures 241 are interconnected, i.e., the plurality of light-transmitting structures 241 do not have to be independent structures. The first light-transmitting structure may be one or more of the light-transmitting structures. Since a plurality of light-transmitting structures 241 are distributed on the display panel, the light-transmitting patterns 24 do not essentially restrict the bending of the display panel, thereby improving the bendability of the display panel.

[0044] 2, in the display panel shown in FIG. 2, when the light-emitting units 22 emit light, light rays are emitted in all directions within a 180-degree range on the side of the substrate 21 where the light-emitting units 22 are installed. However, a viewer usually views the display panel from an area directly facing the display panel 20. As a result, some of the light rays emitted from the light-emitting units 22 are not emitted to the area where the viewer is located, resulting in wasted light. In the display panel provided in the embodiment of the present application, the first apertures 231 of the first light-transmitting layer 23 cooperate with the second light-transmitting layer 14 to form a lens-like structure. Some of the light rays emitted from the light-emitting units 22 are irradiated onto the first light-transmitting structures 241a located in the first apertures 231 and onto the hole walls of the first apertures 231. Because the refractive index of the material of the first light-transmitting structures 241a is greater than that of the first light-transmitting layer 23, some of the light rays are totally reflected by the hole walls and emitted to the area directly facing the display panel. Therefore, the structure of the first light-transmitting structure 241a and the first apertures 231 can improve the light output efficiency of the display panel.

[0045] In the display panel provided in the above embodiment, the combination of the first light-emitting unit 221, the first aperture k1, and the first light-transmitting structure 241a can improve the light output efficiency of the light beam emitted by the first light-emitting unit 221. In the above display panel, one or more of the plurality of light-emitting units may be first light-emitting units, one or more of the plurality of apertures may be first apertures, and one or more of the plurality of light-transmitting structures may be first light-transmitting units. Of course, the display panel may have a first light-transmitting layer above one or more light-emitting units without apertures, or may have a first light-transmitting layer above one or more light-emitting units with apertures but no light-transmitting structures in the apertures, and the embodiments of the present application are not limited thereto.

[0046] In an exemplary embodiment, each of the light-emitting units among the plurality of light-emitting units is a first light-emitting unit, each of the apertures among the plurality of apertures is a first aperture, and each of the light-transmitting structures among the plurality of light-transmitting structures is a first light-transmitting unit, which can further improve the overall light-emitting efficiency of the display panel.

[0047] In exemplary embodiments, the light-emitting units 22 and the apertures k in the first light-transmitting layer 23 may have a one-to-one corresponding relationship, and the apertures k in the first light-transmitting layer 23 and the light-transmitting structures 241 may have a one-to-one corresponding relationship, and the embodiments of the present application are not limited thereto.

[0048] The plurality of apertures and the plurality of light-transmitting structures in the first light-transmitting layer provided in the embodiment of the present application can form a transparent array (Micro Lens Array, MLA) which can improve the light output efficiency of the display panel.

[0049] 5, which is a structural schematic diagram of another display panel provided in an embodiment of the present application. In the display panel shown in FIG. 5, the first light-transmitting structure 241a includes a first portion 1a covered by the first light-transmitting layer 23 and a second portion 1b located at the first aperture k1. The height of the first portion 1a in a first direction f1 perpendicular to the substrate 21 and away from the substrate 21 is greater than the height of the second portion 1b in the first direction f1. That is, the height of the portion of the first light-transmitting structure 241a covered by the first light-transmitting layer 23 is greater than the height of the portion not covered by the first light-transmitting layer 23. This height difference may be formed by the first light-transmitting layer 23 bracing the first light-transmitting structure 241a or by a process, and the embodiment of the present application is not limited thereto.

[0050] The portion of the first light-transmitting structure 241a that is covered by the first light-transmitting layer 23 is located just at the edge of the first light-transmitting structure 241a. That is, the first light-transmitting structure 241a has a protruding edge, which can diverge the light beam to a certain extent and improve the problem of luminance decay (L-Decay) of the display panel when the viewing angle becomes large.

[0051] In addition, the height of the first portion 1a in the first direction f1, which is perpendicular to the substrate 21 and away from the substrate 21, being greater than the height of the second portion 1b in the first direction f1 may mean that the minimum height of the first portion 1a in the first direction f1 is greater than the maximum height of the second portion 1b in the first direction f1, or that the maximum height of the first portion 1a in the first direction f1 is greater than the maximum height of the second portion 1b in the first direction f1, or that the average height of the first portion 1a in the first direction f1 is greater than the average height of the second portion 1b in the first direction f1, and the embodiments of the present application are not limited to this.

[0052] In the illustrative embodiment, the top surface m1 of the first portion 1a of the first light-transmitting structure 241a includes an arcuate surface that protrudes away from the substrate 21. The arcuate surface can further improve the light scattering ability of the first portion 1a, thereby improving the effect of alleviating the problem of attenuation of light output brightness of the display panel when the viewing angle increases. The arcuate surface may be formed by the action of the first light-transmitting layer 23 bracing the first light-transmitting structure 241a and the properties of the material of the light-transmitting structure, or may be formed by a process; however, the embodiment of the present application is not limited thereto.

[0053] As an option, the display panel further includes a second light-transmitting layer 28, which is located above the light-transmitting pattern and made of a material with a refractive index smaller than that of the light-transmitting pattern. For example, the material of the second light-transmitting layer 28 may be an optically clear adhesive (OCA).

[0054] In an exemplary embodiment, as shown in FIG. 6, FIG. 6 is an enlarged structural schematic diagram of a portion (region q1) of the display panel shown in FIG. 5, where the side m2 of the first portion 1a is an inclined surface inclined toward the center direction f2 of the aperture k, and the slope angle c1 of the side m2 of the first portion 1a is 50 degrees or more. In this inclined surface structure, the location of the side m2 is the interface between the first light-transmitting structure and the upper structure, and the refractive index of the upper structure may be smaller than the refractive index of the first light-transmitting structure, thereby adjusting the inclined side m2 to the deflection direction of the light beam, thereby improving the light output efficiency of the display panel. In the embodiment of the present application, a surface inclined in a direction (which may be referred to as a target direction) may mean that a first side and a second side of the surface are aligned in that direction, where the first side and the second side are two opposing sides of the surface, and the first side is located on the side of the second side away from the substrate.

[0055] As one option, the range of the inclination angle c1 of the side surface m2 of the first portion 1a is 70 to 80 degrees. When the inclination angle c1 is within this range, the light output efficiency of the display panel can be further improved.

[0056] As one option, the hole wall m3 of the opening k in the first light transmitting layer 23 is The direction f2 is inclined in the opposite direction to the direction f2, and the direction f2 is a direction toward the center of the aperture k,That is, the apertures are horn-shaped, larger at the top and smaller at the bottom. This type of aperture facilitates the adjustment of the direction of the light beams emitted from the light-emitting units and improves light output efficiency. The slope angle c2 of the aperture wall m3 is greater than the critical angle of total reflection at the interface between the light-transmitting pattern 24 and the first light-transmitting layer 23. That is, the slope angle c2 is greater than arcsin(n1 / n2), where n1 is the refractive index of the material of the first light-transmitting layer and n2 is the refractive index of the material of the light-transmitting structure. The aperture k is filled with a light-transmitting structure. The aperture wall of the aperture k is the interface between the first light-transmitting layer and the light-transmitting structure. The slope angle c2 of the aperture wall m3 is greater than the critical angle of total reflection at the interface between the light-transmitting pattern 24 and the first light-transmitting layer 23. This structure allows more light beams to be totally reflected at the interface, further improving the light output efficiency of the display panel.

[0057] In an exemplary embodiment, refer to FIG. 6, in which the first light-transmitting layer 23 includes a first region x1 covered by the first light-transmitting structure 241a and a second region x2 not covered by the first light-transmitting structure 241a, and the thickness h1 of the first light-transmitting layer 23 in the first region x1 is greater than the thickness h2 of the first light-transmitting layer 23 in the second region x2.

[0058] Such a structure may be formed by a pre-treatment (Descum) process performed after the formation of the light-transmitting pattern 24. The light-transmitting pattern 24 may be a pattern formed by a pattern construction process after all light-transmitting film layers are formed on the first light-transmitting layer 23, and the pre-treatment process is a process for removing the light-transmitting film layer that is not completely cleared.

[0059] 7, which is a schematic plan view of the structure of a display panel provided in an embodiment of the present application (the plan view shows an enlarged schematic plan view of an area P of the display panel), wherein the display panel further includes a target pattern 25 located on a substrate on which a first light-transmitting layer 23 is disposed, and the orthogonal projection of the target pattern 25 onto the substrate 21 surrounds the orthogonal projection of the light-transmitting pattern 24 onto the substrate 21. Target Pattern 25is used to reduce various problems such as unevenness (a phenomenon in which the brightness of the display panel is uneven and various marks appear) in the light transmission pattern near the edges by balancing the difference in thickness between the area where the light transmission pattern is installed on the display panel and the edge area where the light transmission pattern is not installed.

[0060] In the embodiment of the present application, the structure of the target pattern 25 can include at least two types, in one structure, the target pattern 25 includes a plurality of block-shaped structures, and in the other structure, the target pattern 25 includes a stripe-shaped structure.

[0061] For an example of the block structure of the target pattern, see FIG. 7 . Here, the display panel has an effective display area AA, the light-transmitting pattern 24 is located in the effective display area AA, and the target pattern 25 includes at least one block structure group 251. Each block structure group 251 includes a plurality of block structures 2a arranged along the edge of the effective display area AA outside the effective display area AA. That is, one block structure group 251 can be surrounded outside the effective display area AA. In an exemplary embodiment, the target pattern 25 includes at least two block structure groups 251, which are sequentially arranged in a direction away from the center of the display panel. That is, the plurality of block structure groups form a plurality of loops (which may be open loops) surrounding the effective display area AA, thereby improving the balance effect against thickness differences and further reducing the impact of the mura phenomenon. Here, the block structure 2a can be referred to as a dummy pixel. The shape of the block-shaped structure 2a may be the same as or different from the light-transmitting structure in the effective display area AA, and the embodiment of the present application is not limited thereto.

[0062] Regarding the stripe-shaped structure of the target pattern, please refer to FIG. 8, which is another schematic planar structural view of a display panel provided in an embodiment of the present application (showing an enlarged structural view of an area P of the display panel in the planar view). Here, the display panel has an effective display area AA, the light-transmitting pattern 24 is located in the effective display area AA, and the target pattern 25 includes a stripe-shaped structure 252, which is arranged outside the effective display area AA and extends along the edge of the effective display area AA. The stripe-shaped structure 252 can achieve a function similar to that of the block-shaped structure group. The stripe-shaped structure can be called a dummy stripe.

[0063] As an option, the width of the stripe structure 252 is in the range of 50 microns to 500 microns, and the stripe structure 252 within this width range is easy to manufacture, and can improve the balance effect for thickness difference and further reduce the influence of unevenness. Note that the width of the stripe structure may refer to the dimension perpendicular to the extension direction of the stripe structure.

[0064] In an exemplary embodiment, the target pattern 25 includes at least two stripe structures 252, which are sequentially arranged outside the effective display area AA in a direction away from the center of the display panel. That is, the stripe structures 252 form multiple loops (which may be open loops) surrounding the effective display area AA, thereby improving the balance effect for thickness differences and further reducing the influence of the mura phenomenon.

[0065] The display panel may have a wiring area q4 for connecting lines (e.g., flexible printed circuits (FPCs) and integrated circuits (ICs)), and the target pattern 25 may not be placed in the wiring area q4 to avoid affecting the structure in the wiring area q4.

[0066] In an exemplary embodiment, refer to Figure 9, which is a schematic cross-sectional view of the display panel shown in Figure 8 (the cross-section is located at the position DD). Here, the target pattern 25 and the light-transmitting pattern 24 have the same layer structure. That is, the target pattern 25 may be a patterned structure of the same material formed together with the light-transmitting pattern 24 by a single pattern configuration process, thereby saving the number of pattern configuration processes.

[0067] In the embodiment of the present application, the light-transmitting pattern 24 can be formed by a negative photoresist material, and the process of forming the light-transmitting pattern 24 can include applying a photoresist material layer, and exposing and developing the photoresist material layer.

[0068] In an exemplary embodiment, referring to FIG. 9 , the display panel further includes a barrier dam 26 located on the edge of the substrate. The orthogonal projection of the target pattern 25 onto the substrate 21 is located closer to the center of the display panel than the orthogonal projection of the barrier dam 26 onto the substrate 21. Because the area outside the barrier dam has little effect on the display of the display panel, the target pattern 25 can be located between the barrier dam 26 and the effective display area AA. The barrier dam can include multiple layers. In this embodiment, the target pattern 25 can be located between the barrier dam closest to the center of the display panel (i.e., the innermost barrier dam) and the effective display area AA. While FIG. 9 illustrates a structure in which the barrier dam is located on the first light-transmitting layer 23, the barrier dam can also be located at other positions. For example, refer to FIG. 10 , which is a schematic cross-sectional view of the display panel shown in FIG. 8 (the cross-section is located at DD). Here, the barrier dam 26 is positioned between the first light transmitting layer 23 and the intermediate layer 27 and tensions the first light transmitting layer 23 .

[0069] Of course, in other exemplary embodiments, the target pattern can be overlaid on a barrier dam, or Target Patterncan be covered over the barrier dam, and Target Pattern The inner edge is located between the barrier dam and the effective display area, and the outer edge is located at the cut edge of the display panel, but the embodiment of the present application is not limited thereto.

[0070] 11, which is a structural schematic diagram of one pixel region in the display panel shown in FIG. 8. The pixel region includes three light-emitting units, and the shapes of the three light-emitting units may be different. Three corresponding light-transmitting structures 241 with different shapes may be correspondingly covered above the three light-emitting units.

[0071] 12, which is a schematic diagram of the structure of another display panel provided in an embodiment of the present application. The display panel further includes a passivation layer (PAS) and an insulating layer (J1) disposed on a substrate 21, a thin-film transistor (TFT), an anode (S1), a pixel definition layer (PDL), a support structure (PS), a first chemical vapor deposition (CVD) layer (CVD1), an inkjet printing layer (IJP), a second chemical vapor deposition layer (CVD2), and an optical adhesive layer (OCA). The thin-film transistor (TFT) is electrically connected to the anode (S1), which is electrically connected to the light-emitting unit (22) (here, the light-emitting unit (22) is a structure including an electroluminescent layer). The optical adhesive layer (OCA) is coated on the light-transmitting pattern to provide a certain flatness. Other structures, such as a protective film layer, may be disposed on the optical adhesive layer (OCA), and the embodiment of the present application is not limited thereto. The thin-film transistor (TFT) may include structures such as an active layer (T1), a source / drain layer (SD), and a gate (G). In addition, the display panel may include a touch layer tc located between the light-transmitting layer 23 and the second chemical vapor deposition layer CVD2 to achieve a touch function. Exemplarily, the touch layer tc may include a first touch metal layer tc1, a second touch metal layer tc2, and an intermediate insulating layer tr located between the first touch metal layer tc1 and the second touch metal layer tc2.

[0072] The display panel may also include a first protrusion structure t1, which is located at the aperture k of the first light-transmitting layer 23. The first protrusion structure t1 may be used to refract the light beam emitted by the light-emitting unit 22, so as to improve the light output efficiency of the display panel. The first light-transmitting structure 241a has a second protrusion structure t2 at a portion covered by the first protrusion structure t1. The second protrusion structure t2 may be used to refract the light beam emitted by the light-emitting unit 22, so as to improve the light output efficiency of the display panel.

[0073] 13, which is a plan view of the first light-transmitting layer 23 in the display panel shown in FIG. 12, the first protrusion structure t1 may be a stripe-shaped structure spanning the aperture k (i.e., both ends of the stripe-shaped protrusion structure t1 may be connected to two opposing hole walls of the aperture k, respectively), and although the first protrusion structure t1 and the first light-transmitting layer 23 are in the same layer structure as shown in FIG. 13, the embodiment of the present application is not limited thereto. For example, the first protrusion structure may be a structure located at the center of the aperture k and may have a circular, rectangular, diamond, or other shape. The structure may be in a different layer from the first light-transmitting layer 23 or in the same layer as the first light-transmitting layer 23, and the embodiment of the present application is not limited thereto.

[0074] The display panel provided in the above embodiments may be a display panel to which Enhanced Efficiency Structure (EES) technology is applied.

[0075] Please refer to FIG. 14, which is a structural schematic diagram of another display panel provided in an embodiment of the present application, in which the light-transmitting structure 241 is a color film layer.

[0076] The display panel further includes a black matrix (BM) pattern 26 located on the substrate 21 on which the light-transmitting pattern 24 is installed, and the black matrix pattern 26 includes an opening area q3, and the orthogonal projection of the light-emitting unit 22 onto the substrate 21 is located within the orthogonal projection of the opening area q3 onto the substrate 21.

[0077] 15, which is a schematic diagram of the structure of another display panel provided in an embodiment of the present application. The display panel further includes an insulating layer (PAS), a thin-film transistor (TFT), an anode (S1), a pixel defining layer (PDL), a support structure (PS), a first chemical vapor deposition (CVD) layer (CVD1), an inkjet printing layer (IJP), a second chemical vapor deposition layer (CVD2), and an optical adhesive layer (OCA) disposed on a substrate (21). The thin-film transistor (TFT) is electrically connected to the anode (S1), which is electrically connected to the light-emitting unit (22) (here, the light-emitting unit (22) is a structure including an electroluminescent layer). The optical adhesive layer (OCA) is coated on the light-transmitting pattern to provide a certain flatness. Other structures, such as a protective film layer, may be disposed on the optical adhesive layer (OCA), and the embodiment of the present application is not limited thereto. The thin-film transistor (TFT) may include structures such as an active layer (T1), a source / drain layer (SD), and a gate (G).

[0078] In addition, the display panel may also include a protrusion structure tq, which is located at the aperture k of the first light-transmitting layer 23 and may be used to refract the light beams emitted by the light-emitting units 22 so as to improve the light output efficiency of the display panel. The protrusion structure tq may be a stripe-shaped structure spanning the aperture k (i.e., both ends of the stripe-shaped protrusion structure tq may be connected to two opposing aperture walls of the aperture k, respectively), or the protrusion structure may be a structure located at the center of the aperture k, and may have a circular, rectangular, diamond, or other shape, which is not limited to the embodiments of the present application.

[0079] Although FIG. 15 shows a top-type black matrix type display panel, the display panel provided in the embodiments of the present application may also be a bottom-type black matrix type display panel, and in a bottom-type black matrix type display panel, the black matrix pattern may be located on the side of the first light-transmitting layer closer to the light-emitting units.

[0080] The display panel shown in FIG. 15 may be a display panel that employs a technology in which a color film layer (CFon EL, COE) is formed on a thin-film packaged organic electroluminescence device.

[0081] The above embodiments provide structures where multiple types of light-emitting units are located, and the display panel provided in the embodiments of the present application can include multiple light-emitting units, and the structure of the locations of these light-emitting units can include the structure of the location of at least one type of light-emitting unit provided in the above embodiments.

[0082] Thus, an embodiment of the present application provides a display panel, which includes a substrate, a light-emitting unit disposed on the substrate, a first light-transmitting layer, and a light-transmitting pattern, wherein the apertures in the first light-transmitting layer face the light-emitting unit, and the light-transmitting pattern includes a light-transmitting structure that covers the apertures in the first light-transmitting layer and a portion of the first light-transmitting layer, and the light-transmitting structure and the apertures in the first light-transmitting layer can form a lens-like structure, thereby improving the light output efficiency of the display panel. Since the light-transmitting pattern is not a full-layer structure but includes multiple light-transmitting structures, the bendability of the display panel is not reduced. Some Practices This solves the problem of poor bendability of the display panel in the LCD panel, and improves the bendability of the display panel.

[0083] FIG. 16 is a method flowchart of a method for manufacturing a display panel provided in an embodiment of the present application, which can be used to manufacture any of the display panels provided in the above embodiments, and the method may include the following steps:

[0084] Step 1301: Obtain a substrate.

[0085] Step 1302: forming a plurality of light emitting units on a substrate;

[0086] Step 1303: Form a first light-transmitting layer on a substrate on which a plurality of light-emitting units are formed, the first light-transmitting layer having a plurality of apertures, and the orthogonal projection of a first light-emitting unit among the plurality of light-emitting units onto the substrate is located within the orthogonal projection of an aperture among the plurality of apertures onto the substrate.

[0087] Step 1304: forming a light-transmitting material layer on the substrate on which the first light-transmitting layer will be formed, the refractive index of the material of the light-transmitting material layer being greater than the refractive index of the material of the first light-transmitting layer;

[0088] A light-transmitting material layer can be formed on the substrate on which the first light-transmitting layer is formed by a coating process, and compared to the inkjet printing method, the coating process can achieve the effect of reducing the thickness of the light-transmitting material layer.

[0089] Step 1305: A light-transmitting pattern is obtained by processing the light-transmitting material layer through a pattern configuration process, the light-transmitting pattern including a plurality of light-transmitting structures, a first light-transmitting structure of the plurality of light-transmitting structures covering the aperture hole and covering at least a portion of the first light-transmitting layer.

[0090] Here, the material of the light-transmitting material layer may be a photoresist material, and further, the process of processing the light-transmitting material layer through a pattern construction process to obtain a light-transmitting pattern may include exposing and developing the light-transmitting material layer.

[0091] After obtaining the light-transmitting pattern, the display panel may be pre-treated to remove any remaining light-transmitting material layer on the display panel. During the pre-treatment, due to the etching resistance of the first light-transmitting layer, Figure 6 The thickness of the portion not covered by the light-transmitting pattern may be smaller than the thickness of the portion covered by the light-transmitting pattern, so as to form a structure as shown in FIG.

[0092] Thus, an embodiment of the present application provides a method for manufacturing a display panel, the display panel including a substrate, a light-emitting unit disposed on the substrate, a first light-transmitting layer, and a light-transmitting pattern, the apertures in the first light-transmitting layer facing the light-emitting unit, the light-transmitting pattern including a light-transmitting structure covering the apertures in the first light-transmitting layer and covering a portion of the first light-transmitting layer, and the light-transmitting structure and the apertures in the first light-transmitting layer forming a lens-like structure, thereby improving the light output efficiency of the display panel. The light-transmitting pattern is not a full-layer structure but includes multiple light-transmitting structures, so that the bendability of the display panel is not reduced. Some Practices This solves the problem of poor bendability of the display panel in the LCD panel, and improves the bendability of the display panel.

[0093] Also, Some PracticesIn the display panel provided in the embodiment of the present application, the patterned light-transmitting pattern includes a plurality of light-transmitting structures, and the light-transmitting pattern does not need to be formed by an inkjet printing process followed by leveling and solidification, but can be formed by a pattern construction process, thereby reducing the thickness of the light-transmitting pattern and the overall thickness of the display panel.

[0094] Furthermore, an embodiment of the present application provides a display device, which includes any one of the display panels provided in the above embodiments. The display device may include devices with various display functions, such as mobile phones, tablets, desktop computers, notebook computers, game consoles, smart wearable devices, televisions, advertising machines, etc. Since the display device includes the display panel provided in the above embodiments, it also has the beneficial effects of the display panel. For details, please refer to the above embodiments, and a detailed description of the embodiment of the present application will be omitted here.

[0095] The term "at least one of A and B" in this application merely describes the relation between related objects, indicating that three relations may exist, for example, "at least one of A and B" can refer to three cases: A exists alone, A and B exist simultaneously, and B exists alone. Similarly, "at least one of A, B, and C" indicates seven relations, indicating seven cases: A exists alone, B exists alone, C exists alone, A and B exist simultaneously, A and C exist simultaneously, C and B exist simultaneously, and A, B, and C exist simultaneously. Similarly, "at least one of A, B, C, and D" indicates that 15 relationships can exist, including A existing alone, B existing alone, C existing alone, D existing alone, A and B existing simultaneously, A and C existing simultaneously, A and D existing simultaneously, C and B existing simultaneously, D and B existing simultaneously, C and D existing simultaneously, A, B, and C existing simultaneously, A, B, and D existing simultaneously, A, C, and D existing simultaneously, B, C, and D existing simultaneously, and A, B, C, and D existing simultaneously.

[0096] It should be noted that in the drawings, the dimensions of layers and regions may be exaggerated for clarity. When an element or layer is referred to as being "on" another element or layer, it is understood that it may be directly on top of the other element, or that intermediate layers may be present. When an element or layer is referred to as being "under" another element or layer, it is understood that it may be directly under the other element, or that one or more intermediate layers or elements may be present. When a layer or element is referred to as being "between" two layers or elements, it is understood that it may be the only layer between the two layers or elements, or that one or more additional intermediate layers or elements may be present. Similar reference numbers refer to similar elements throughout this specification.

[0097] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to state or imply any relative importance. The term "plurality" means two or more than two, unless expressly limited.

[0098] The above are merely optional embodiments of the present application and are not used to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included within the scope of protection of the present application.

Claims

1. The light-emitting device includes a substrate, a plurality of light-emitting units, a first light-transmitting layer, and a light-transmitting pattern; The plurality of light emitting units are disposed on the substrate; the first light-transmitting layer is located on a substrate on which the plurality of light-emitting units are disposed, the first light-transmitting layer has a plurality of apertures, and an orthogonal projection of a first light-emitting unit of the plurality of light-emitting units onto the substrate overlaps with an orthogonal projection of a first aperture of the plurality of apertures onto the substrate; the light-transmitting pattern is located on a substrate on which the first light-transmitting layer is disposed, the light-transmitting pattern includes a plurality of light-transmitting structures, a first light-transmitting structure of the plurality of light-transmitting structures covers the first aperture and at least a part of the first light-transmitting layer, and the refractive index of the material of the light-transmitting pattern is greater than the refractive index of the material of the first light-transmitting layer; Display panel.

2. the first light-transmitting structure includes a first portion covered on the first light-transmitting layer and a second portion located in the first aperture, and a height of the first portion in a first direction perpendicular to the substrate and away from the substrate is greater than a height of the second portion in the first direction; The display panel according to claim 1 .

3. an upper surface of the first portion of the first light-transmitting structure including an arcuate surface protruding in a direction away from the substrate; The display panel according to claim 2 .

4. a hole wall of the first aperture of the first light-transmitting layer is inclined in a direction away from the center of the first aperture, and the inclination angle of the hole wall is greater than a total reflection critical angle of the interface between the light-transmitting pattern and the first light-transmitting layer; The display panel according to claim 1 .

5. the display panel has an effective display area and a peripheral area located outside the effective display area, the light transmission pattern is located in the effective display area, The display panel further includes a target pattern, the target pattern being located on a substrate on which the light-emitting units are installed, the target pattern being located in the peripheral region, and the refractive index of the material of the target pattern being greater than the refractive index of the material of the first light-transmitting layer. The display panel according to claim 1 .

6. the target pattern and the light-transmitting pattern have the same layer structure; The display panel according to claim 5 .

7. the target pattern includes at least one block structure group, and one of the block structure groups includes a plurality of block structures arranged outside the effective display area along a periphery of the effective display area. The display panel according to claim 5 .

8. the target pattern includes at least two of the block-shaped structure groups, and the at least two of the block-shaped structure groups are sequentially arranged in a direction away from the center of the display panel; The display panel according to claim 7 .

9. The dimensions of the block structure are the same as the dimensions of the light-transmitting structure; The display panel according to claim 7 .

10. the target pattern includes a stripe-shaped structure, and the stripe-shaped structure is arranged outside the effective display area and extending along the edge of the effective display area; The display panel according to claim 5 .

11. the target pattern includes at least two of the stripe-shaped structures, and the at least two of the stripe-shaped structures are sequentially arranged outside the effective display area in a direction away from the center of the display panel; The display panel according to claim 10.

12. the display panel further includes a first protrusion structure, the first protrusion structure being located in the opening of the first light-transmitting layer; the first light-transmitting structure has a second protrusion structure at a portion covered by the first protrusion structure; The display panel according to claim 1 .

13. The display panel further includes a barrier dam located at an edge of the substrate; an orthogonal projection of the target pattern onto the substrate is located closer to the center of the display panel than an orthogonal projection of the barrier dam onto the substrate; The display panel according to claim 5 .

14. The display panel further includes a barrier dam located at an edge of the substrate; the target pattern is covered on the barrier dam; The display panel according to claim 5 .

15. the light-transmitting structure is a color film layer; the display panel further includes a black matrix pattern disposed on a substrate on which the light-transmitting pattern is disposed, the black matrix pattern includes an opening area, and the orthogonal projection of the first aperture of the first light-transmitting layer onto the substrate is located within the orthogonal projection of the opening area onto the substrate; The display panel according to claim 1 .

16. the first light-transmitting layer includes a first region covered by the first light-transmitting structure and a second region not covered by the first light-transmitting structure, and the thickness of the first light-transmitting layer in the first region is greater than the thickness of the first light-transmitting layer in the second region; The display panel according to claim 1 .

17. a side surface of the first portion is an inclined surface inclined toward the center of the first aperture, and the inclination angle of the side surface of the first portion is 50 degrees or more; The display panel according to claim 2 .

18. The slope angle of the side surface of the first portion is in the range of 70 degrees to 80 degrees. The display panel according to claim 17.

19. A method for manufacturing a semiconductor device, comprising: obtaining a substrate; forming a plurality of light emitting units on the substrate; forming a first light-transmitting layer on a substrate on which the plurality of light-emitting units are formed, the first light-transmitting layer having a plurality of apertures, wherein an orthogonal projection of a first light-emitting unit of the plurality of light-emitting units onto the substrate overlaps with an orthogonal projection of a first aperture of the plurality of apertures onto the substrate; forming a light-transmitting material layer on a substrate on which the first light-transmitting layer is formed, and a refractive index of the material of the light-transmitting material layer is greater than a refractive index of the material of the first light-transmitting layer; performing a pattern construction process on the light-transmitting material layer to obtain a light-transmitting pattern, the light-transmitting pattern including a plurality of light-transmitting structures, a first light-transmitting structure of the plurality of light-transmitting structures covering the first aperture and at least a portion of the first light-transmitting layer; Including, A method for manufacturing a display panel.

20. A display device including a display panel, The display panel includes a substrate, a plurality of light-emitting units, a first light-transmitting layer, and a light-transmitting pattern; The plurality of light emitting units are disposed on the substrate; the first light-transmitting layer is located on a substrate on which the plurality of light-emitting units are disposed, the first light-transmitting layer has a plurality of apertures, and an orthogonal projection of a first light-emitting unit of the plurality of light-emitting units onto the substrate overlaps with an orthogonal projection of a first aperture of the plurality of apertures onto the substrate; the light-transmitting pattern is located on a substrate on which the first light-transmitting layer is disposed, the light-transmitting pattern includes a plurality of light-transmitting structures, a first light-transmitting structure of the plurality of light-transmitting structures covers the first aperture and at least a part of the first light-transmitting layer, and the refractive index of the material of the light-transmitting pattern is greater than the refractive index of the material of the first light-transmitting layer; Display device.

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