Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device.The display panel comprises an array substrate which comprises a first substrate and a plurality of driving units arranged on the first substrate, and a smooth layer is arranged on the side, away from the first substrate, of each driving unit; the color film substrate is arranged opposite to the array substrate and comprises a second substrate and an organic flat layer arranged on the second substrate; the liquid crystal layer is arranged between the array substrate and the color film substrate, a supporting structure is arranged in the liquid crystal layer, and the two ends of the supporting structure abut against the surface of the smooth layer and the surface of the organic flat layer respectively; wherein the smooth layer and the supporting structure are made of cross-linked polymers based on acrylic acid. According to the technology, the probability of light leakage can be effectively reduced, and the dark state uniformity of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the technical field of display products, and particularly to a display panel and a display device. Background Art

[0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display) has become an important display platform in modern information technology and video products. However, existing LCD display products still have various problems. For example, the display uniformity of LCD display products is poor in the dark state, etc., which easily affects the visual experience of users, and the viewing experience of users needs to be improved. Summary of the Invention

[0003] Embodiments of the present application provide a display panel and a display device to solve or alleviate one or more technical problems in the prior art.

[0004] In a first aspect, an embodiment of the present application provides a display panel, including: an array substrate including a first substrate and a plurality of driving units disposed on the first substrate, a smoothing layer being disposed on a side of the driving unit facing away from the first substrate; a color filter substrate disposed opposite to the array substrate, including a second substrate and an organic planarizing layer disposed on the second substrate; a liquid crystal layer disposed between the array substrate and the color filter substrate, a support structure being disposed in the liquid crystal layer, and two ends of the support structure respectively abutting against surfaces of the smoothing layer and the organic planarizing layer; wherein, the materials of the smoothing layer and the support structure respectively include an acrylic-based crosslinked polymer.

[0005] In an embodiment, the materials of the smoothing layer and the support structure respectively include polymethyl methacrylate, polybutyl methacrylate or poly(methyl acrylate).

[0006] In an embodiment, the thickness of the smoothing layer is 0.05 to 1 um.

[0007] In an embodiment, a surface of the smoothing layer facing away from the first substrate is curved in a direction towards the first substrate to form an arc surface, and a contact point of the support structure with the smoothing layer is disposed adjacent to the center of curvature of the arc surface.

[0008] In an embodiment, the driving unit includes a metal gate, a gate insulating layer, an active layer, a metal source-drain electrode and an organic film layer, the organic film layer having a boss structure protruding in a direction away from the first substrate, and a positive projection of the metal gate and the metal source-drain electrode on the first substrate being within a range of a positive projection of the boss structure on the first substrate; wherein, a positive projection of the smoothing layer on the first substrate and a positive projection of the boss structure on the first substrate are at least partially overlapped.

[0009] In one embodiment, the color filter substrate further includes a color filter layer disposed on the second substrate, and the color filter layer includes a red light transmission region, a green light transmission region, and a blue light transmission region; wherein, the orthographic projection of the smoothing layer on the second substrate overlaps at least partially with the orthographic projection of the blue light transmission region on the second substrate.

[0010] In one embodiment, the support structure includes a first support structure and a second support structure. The orthographic projection of the first support structure on the second substrate is within the orthographic projection range of the blue light transmission region on the second substrate, and the orthographic projection of the second support structure on the second substrate is within the orthographic projection range of the red light transmission region on the second substrate.

[0011] In one embodiment, two ends of the first support structure are respectively abutted against the surfaces of the smoothing layer and the organic planarization layer, one end of the second support structure is abutted against the surface of the organic planarization layer, and the other end is spaced apart from the surface of the driving unit.

[0012] In one embodiment, the color filter substrate further includes a light-shielding layer disposed between the organic planarization layer and the second substrate, and the orthographic projection of the smoothing layer on the second substrate overlaps at least partially with the orthographic projection of the light-shielding layer on the second substrate.

[0013] In a second aspect, an embodiment of the present application further provides a display device, including the display panel according to any one of the above embodiments of the present application.

[0014] According to the display panel of the embodiment of the present application, by disposing a smoothing layer on the side of the driving unit facing away from the first substrate, and the material of the smoothing layer is an acrylic-based cross-linked polymer having the same material as the support structure, the coefficient of static friction between the end of the support structure and the surface of the smoothing layer can be significantly reduced, thereby reducing the maximum static friction force between the two. Thus, during the elastic reset process of the support structure after the external force is removed, the situation where the support structure cannot be reset due to excessive static friction force can be avoided, thereby improving the efficiency of the support structure's rebound reset, ensuring that the support structure can return to its original state, and further ensuring the thickness consistency of the liquid crystal layer, effectively reducing the probability of light leakage, and improving the dark state uniformity of the display panel.

[0015] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0017] Figure 1A Schematic diagram showing the structure of a display panel in the related art when deformed under an external force;

[0018] Figure 1B Schematic diagram showing the structure of a display panel in the related art after the external force is removed;

[0019] Figure 2 Schematic diagram showing the structure of a display panel according to an embodiment of the present application;

[0020] Figure 3A Schematic diagram showing the structure of a display panel according to an embodiment of the present application when deformed under an external force;

[0021] Figure 3B Schematic diagram showing the structure of a display panel according to an embodiment of the present application after the external force is removed;

[0022] Figure 4 Schematic diagram showing the design layout of a display panel according to an embodiment of the present application.

[0023] Description of reference numerals:

[0024] Related art:

[0025] Display panel 1'; Array substrate 10'; First substrate 11'; Driving unit 12'; Color filter substrate 20'; Second substrate 21'; Light-shielding layer 22'; Color filter layer 23'; Organic film layer 24'; Liquid crystal layer 30'; Support structure 30a';

[0026] The present application:

[0027] Display panel 1;

[0028] Array substrate 10; First substrate 11; Driving unit 12; Boss structure 12a; Metal gate 121; Gate insulating layer 122; Active layer 123; Metal source-drain 124; Organic film layer 125; Smoothing layer 13;

[0029] Color filter substrate 20; Second substrate 21; Light-shielding layer 22; Color filter layer 23; Red light transmission region 231; Green light transmission region 232; Blue light transmission region 233; Organic planarization layer 24;

[0030] Liquid crystal layer 30; Support structure 31; First support structure 311; Second support structure 312; Detailed description of the invention

[0031] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0032] The poor dark state uniformity of the display panel means that when the display panel is in the dark state (i.e., when the screen is turned off or a black screen is displayed), the colors and brightness of different regions on the display panel cannot reach consistency, resulting in uneven display effects. In the related art, the main reason for the poor dark state uniformity of the display panel is that light leakage occurs in the display panel in the dark state. One possibility that causes the light leakage phenomenon is that some structures in the display panel are deformed under external force and cannot return to their original state.

[0033] Figure 1A The structural schematic diagram of the display panel 1' in the related art when it is deformed under external force is shown, as Figure 1A shown, the display panel 1' includes an array substrate 10', a color filter substrate 20', and a liquid crystal layer 30' located therebetween. The array substrate 10' includes a first substrate 11' and a driving unit 12' provided on the first substrate 11'. The color filter substrate 20' includes a second substrate 21' and a light-shielding layer 22', a color filter layer 23', and an organic film layer 24' sequentially provided on the second substrate 21'. Among them, a support structure 30a' is provided in the liquid crystal layer 30', and both ends of the support structure 30a' are respectively in contact with the surfaces of the array substrate 10' and the color filter substrate 20' to play a supporting role. When the display panel 1' is under external force, the display panel 1' is deformed, and the support structure 30a' undergoes elastic deformation accordingly. Among them, the end of the support structure 30a' in contact with the surface of the driving unit 12' of the array substrate 10' has a tendency of relative movement, so that the surface of the driving unit 12' exerts a frictional force F1 on the end of the support structure 30a' opposite to its movement tendency.

[0034] Figure 1B The structural schematic diagram of the display panel 1' in the related art after the external force is removed is shown, as Figure 1BAs shown, after the external force is removed, there is a static friction force F2 between the end of the support structure 30a' and the surface of the driving unit 12' under the action of its own elastic force. If the elastic force of the support structure 30a' itself is less than the maximum static friction force between its end and the surface of the driving unit 12', it will cause the support structure 30a' to be unable to rebound and reset, resulting in uneven thickness between the array substrate 10' and the color filter substrate 20'. The thickness of the liquid crystal layer 30' between the array substrate 10' and the color filter substrate 20' changes, resulting in different optical paths of the light passing through the liquid crystal layer 30'. Since the polarizer located above the liquid crystal layer 30' can only block light with a specific optical path. Therefore, when the thickness of the liquid crystal layer 30' is inconsistent, light leakage will occur.

[0035] It can be seen that if the static friction coefficient between the end of the support structure and the film layer interface it contacts is too large, the support structure will not be able to return to its original state through elastic deformation after deformation, resulting in light leakage in the display panel, and further resulting in the defect of poor dark state uniformity of the display panel. To solve the defect of poor dark state uniformity, a related technology proposes to increase the content of liquid crystal molecules in the liquid crystal layer to provide more support force through the liquid crystal layer, reduce the pressure borne by the support structure, and thus reduce the friction force received by the end of the support structure during the reset process. However, this method will affect the optical specifications of the display panel and increase the manufacturing cost.

[0036] In view of the above defects in the related technology, the embodiment of the present application provides a display panel, which is used to improve the defects that the support structure is difficult to rebound and rebounds slowly after being affected by an external force, thereby reducing the light leakage phenomenon of the display panel after the external force is removed, improving the defect of poor dark state uniformity, and further improving the display effect of the display panel.

[0037] Figure 2 The structural schematic diagram of the display panel 1 according to the embodiment of the present application is shown. As Figure 2 shown, the display panel 1 includes an array substrate 10, a color filter substrate 20, and a liquid crystal layer 30. Specifically, the array substrate 10 includes a first substrate 11 and a plurality of driving units 12 disposed on the first substrate 11. A smoothing layer 13 is disposed on the side of the driving unit 12 facing away from the first substrate 11. The color filter substrate 20 is disposed opposite to the array substrate 10 and includes a second substrate 21 and an organic planarization layer 24 disposed on the second substrate 21. The liquid crystal layer 30 is disposed between the array substrate 10 and the color filter substrate 20. A support structure 31 is disposed in the liquid crystal layer 30, and both ends of the support structure 31 are respectively abutted against the surfaces of the smoothing layer 13 and the organic planarization layer 24. Among them, the materials of the smoothing layer 13 and the support structure 31 respectively include acrylic-based crosslinked polymers.

[0038] In the embodiments of the present application, the display panel 1 may specifically adopt an LCD (Liquid Crystal Display) panel. Among them, the first substrate 11 and / or the second substrate 21 may be a rigid substrate or a flexible substrate, and the embodiments of the present application do not make specific limitations in this regard.

[0039] Exemplarily, the smoothing layer 13 is disposed on the side of the driving unit 12 away from the first substrate 11, and is the film layer structure closest to the liquid crystal layer 30 of the array substrate 10. It can be understood that multiple driving units 12 are arranged in an array and are correspondingly arranged one by one with multiple sub-pixels arranged in an array of the display panel 1. Among them, there may be multiple supporting structures 31, which are correspondingly arranged with some of the multiple sub-pixels. The smoothing layer 13 may be multiple corresponding one by one to the multiple supporting structures 31, and is correspondingly arranged one by one with the multiple driving units 12 corresponding to the multiple supporting structures 31.

[0040] In some examples, the supporting structure 31 may be columnar, and at least part of the orthographic projection of the supporting structure 31 on the first substrate 11 overlaps with the orthographic projection of the smoothing layer 13 on the first substrate 11. In other words, the orthographic projection of the supporting structure 31 on the first substrate 11 is located within the range of the orthographic projection of the smoothing layer 13 on the first substrate 11. Preferably, the orthographic projection of the supporting structure 31 on the first substrate 11 is disposed adjacent to the central region of the orthographic projection of the smoothing layer 13 on the first substrate 11. With such a setting, when the display panel 1 is deformed under an external force, when both ends of the supporting structure 31 are deformed under pressure, the end of the supporting structure 31 adjacent to the array substrate 10 can still keep in contact with the surface of the smoothing layer 13 when it slides relative to the surface of the smoothing layer 13.

[0041] In order to ensure that the supporting structure 31 has good elasticity, so that the supporting structure 31 can quickly return to its original state after being deformed with the display panel 1 to ensure its supporting effect on the display panel 1, the material of the supporting structure 31 may adopt an acrylic-based cross-linked polymer. The acrylic-based cross-linked polymer is a macromolecular compound formed by the polymerization reaction of acrylic acid or its derivatives (such as acrylate). In this process, monomer molecules form chemical bonds by sharing electron pairs to form a macromolecular chain, and then these macromolecular chains form a three-dimensional network structure through a cross-linking reaction. Since the acrylic-based cross-linked polymer has good heat resistance, chemical resistance and mechanical properties, it can ensure the supporting stability of the supporting structure 31 for the display panel 1.

[0042] It should be noted that, compared with the relatively large static friction coefficient between the end of the support structure 31 and the film layer interface of the array substrate 10 in the related art, in the embodiment of the present application, by using the same acrylic-based cross-linked polymer as the support structure 31 for the material of the smoothing layer 13, the friction coefficient between the end of the support structure 31 and the surface of the smoothing layer 13 can be significantly reduced, thereby reducing the maximum static friction force between the support structure 31 and the surface of the smoothing layer 13.

[0043] Figure 3A FIG. 4 shows a schematic structural diagram of the display panel 1 according to the embodiment of the present application when it is deformed under an external force. Figure 3B FIG. 5 shows a schematic structural diagram of the display panel 1 according to the embodiment of the present application after the external force is removed, as Figure 1B shown. The following will refer to Figure 3A and Figure 3B to describe the force analysis of the support structure 31 when the display panel 1 is under an external force and after the external force is removed.

[0044] As Figure 3A shown, when the display panel 1 is deformed under an external force, after the color filter substrate 20 is bent and deformed, it generates a pressure F on the support structure 31 (the support structure 31 located on the left side in the figure). Under the action of the horizontal component force F1 and the vertical component force F2 of the pressure F and the supporting force F 支 of the smoothing layer 13, the support structure 31 is deformed, and the lower end of the support structure 31 slides leftward relative to the smoothing layer 13, and the smoothing layer 13 generates a rightward frictional force f1 on the lower end of the support structure 31.

[0045] As Figure 3B shown, after the external force is removed, under the action of its own elastic force, the lower end of the support structure 31 (the support structure 31 located on the left side in the figure) has a rightward movement tendency relative to the smoothing layer 13, and the smoothing layer 13 generates a frictional force f2 on the lower end of the support structure 31 in the direction opposite to its movement tendency. Since the static friction coefficient between the lower end of the support structure 31 and the surface of the smoothing layer 13 is small, the elastic force of the support structure 31 itself is greater than the maximum static friction force exerted by the smoothing layer 13 on it, so that the lower end of the support structure 31 can slide rightward relative to the smoothing layer 13 until the support structure 31 is reset and can normally support the array substrate 10 and the color filter substrate 20.

[0046] In summary, for the display panel 1 according to the embodiments of the present application, by providing a smoothing layer 13 on the side of the driving unit 12 facing away from the first substrate 11, and the material of the smoothing layer 13 is an acrylic-based cross-linked polymer having the same material as that of the support structure 31, the static friction coefficient between the end of the support structure 31 and the surface of the smoothing layer 13 can be significantly reduced, thereby reducing the maximum static friction force therebetween. Thus, during the elastic reset process of the support structure 31 after the external force is removed, the situation where the support structure 31 cannot be reset due to excessive static friction force can be avoided, thereby improving the efficiency of the support structure 31 to rebound and reset, ensuring that the support structure 31 can return to its original state, and further ensuring the thickness uniformity of the liquid crystal layer 30, and effectively reducing the probability of light leakage and improving the dark state uniformity of the display panel 1.

[0047] In one embodiment, the materials of the smoothing layer 13 and the support structure 31 respectively include polymethyl methacrylate, polybutyl methacrylate or poly(methyl acrylate).

[0048] In the embodiments of the present application, the materials of the smoothing layer 13 and the support structure 31 can be the same type of acrylic-based cross-linked polymer, or different types of acrylic-based cross-linked polymers.

[0049] Preferably, the materials of the smoothing layer 13 and the support structure 31 can be the same type of acrylic-based cross-linked polymer. For example, the materials of the smoothing layer 13 and the support structure 31 can both be polymethyl methacrylate, polybutyl methacrylate or poly(methyl acrylate).

[0050] In one embodiment, the thickness of the smoothing layer 13 is 0.05 to 1 μm.

[0051] In the embodiments of the present application, the thickness of the smoothing layer 13 can be set accordingly according to the coating ability and exposure ability of the device, and the embodiments of the present application do not make specific limitations thereto.

[0052] It can be understood that when the thickness of the smoothing layer 13 is less than 0.05 μm, although the small thickness of the smoothing layer 13 is beneficial to reducing the overall thickness of the array substrate 10, the preparation difficulty is relatively large, resulting in an increase in the preparation cost of the display panel 1; when the thickness of the smoothing layer 13 is greater than 1 μm, although the preparation difficulty of the smoothing layer 13 is reduced, which is beneficial to reducing the preparation cost of the display panel 1, the overall thickness of the array substrate 10 will increase. Therefore, the thickness of the smoothing layer 13 is preferably set to 0.05 to 1 μm.

[0053] More preferably, the thickness of the smoothing layer 13 can be set to 0.4 to 0.6 μm.

[0054] In one embodiment, the surface of the smoothing layer 13 away from the first substrate 11 is bent in a direction towards the first substrate 11 to form an arc surface, and the contact point between the end of the support structure 31 and the smoothing layer 13 is arranged adjacent to the bending center of the arc surface.

[0055] Exemplarily, the surface of the smoothing layer 13 away from the first substrate 11 can be an arc surface bent in a direction towards the first substrate 11, and the shape of the orthographic projection of the smoothing layer 13 on the first substrate 11 can be circular. Among them, the bending center of the arc surface can overlap with the center of the circle of the shape of the orthographic projection of the smoothing layer 13 on the first substrate 11.

[0056] In some preferred examples, when the display panel 1 is not deformed under the action of external force, the contact point between the end of the support structure 31 and the smoothing layer 13 can be located at the bending center of the arc surface of the smoothing layer 13. With such an arrangement, after the display panel 1 is deformed and the external force is withdrawn, the displaced end of the support structure 31 can be quickly reset to the bending center of the arc surface under the action of its own elastic force, thereby improving the reset efficiency of the support structure 31 and enabling the display brightness of the display panel 1 to quickly recover to uniformity in the dark state.

[0057] In one embodiment, as Figure 2 shown, the driving unit 12 includes a metal gate 121, a gate insulating layer 122, an active layer 123, a metal source-drain 124, and an organic film layer 125. The organic film layer 125 has a boss structure 12a formed by protruding in a direction away from the first substrate 11. The orthographic projections of the metal gate 121 and the metal source-drain 124 on the first substrate 11 are located within the range of the orthographic projection of the boss structure 12a on the first substrate 11; among them, the orthographic projection of the smoothing layer 13 on the first substrate 11 overlaps at least partially with the orthographic projection of the boss structure 12a on the first substrate 11.

[0058] Exemplarily, the metal gate 121 is covered by the gate insulating layer 122, and the metal source-drain 124 is located on the side of the gate insulating layer 122 away from the first substrate 11, that is, the metal gate 121 and the metal source-drain 124 are located in different hierarchical structures. Thus, the organic film layer 125 covering the side of the metal source-drain 124 away from the first substrate 11 has a boss structure 12a protruding in a direction away from the first substrate 11 at a position opposite to the metal gate 121 and the metal source-drain 124. The smoothing layer 13 is arranged on the surface of the boss structure 12a away from the first substrate 11, and the orthographic projection of the smoothing layer 13 on the first substrate 11 and the orthographic projection of the boss structure 12a on the first substrate 11 have an overlapping area. Among them, the end of the support structure 31 abuts against the part of the surface of the smoothing layer 13 located in the overlapping area.

[0059] With such a setting, the smoothing layer 13 can be arranged as close as possible to the liquid crystal layer 30, so as to minimize the distance between the surface of the smoothing layer 13 and the surface of the organic planarization layer 24 of the color filter substrate 20, thereby reducing the support height of the support structure 31 and improving the support stability of the support structure 31.

[0060] In one embodiment, the color filter substrate 20 further includes a color filter layer 23 disposed on the second substrate 21. The color filter layer 23 includes a red light transmission region 231, a green light transmission region 232, and a blue light transmission region 233. Among them, the orthographic projection of the smoothing layer 13 on the second substrate 21 overlaps at least partially with the orthographic projection of the blue light transmission region 233 on the second substrate 21.

[0061] In the embodiments of the present application, the red light transmission region 231, the green light transmission region 232, and the blue light transmission region 233 are arranged in an array and are respectively corresponding to the red sub-pixels, green sub-pixels, and blue sub-pixels of the display panel 1. Among them, the red light transmission region 231 is for only red light to pass through, the green light transmission region 232 is for only green light to pass through, and the blue light transmission region 233 is for only blue light to pass through.

[0062] Exemplarily, Figure 4 show the layout design of the display panel 1 of the embodiments of the present application, as Figure 4 shown, the orthographic projection of the blue light transmission region 233 and the boss structure 12a of the driving unit 12 of the array substrate 10 on the second substrate 21 have an overlapping region, and at least part of the orthographic projection of the smoothing layer 13 on the second substrate 21 coincides with this overlapping region.

[0063] In one embodiment, the support structure 31 includes a first support structure 311 and a second support structure 312. The orthographic projection of the first support structure 311 on the second substrate 21 is within the orthographic projection range of the blue light transmission region 233 on the second substrate 21, and the orthographic projection of the second support structure 312 on the second substrate 21 is within the orthographic projection range of the red light transmission region 231 on the second substrate 21.

[0064] Exemplarily, both ends of the first support structure 311 are respectively in contact with the surfaces of the smooth layer 13 and the organic planarization layer 24, and one end of the second support structure 312 is in contact with the surface of the organic planarization layer 24 and the other end is spaced apart from the surface of the driving unit 12. Specifically, the first support structure 311 may be the main support structure 31, and both ends of the first support structure 311 are respectively in contact with the surfaces of the organic planarization layer 24 and the smooth layer 13, for playing a main supporting role for the display panel 1. The second support structure 312 may be an auxiliary support structure 31, one end of the second support structure 312 is connected to the surface of the organic planarization layer 24 and the other end is spaced apart from the film layer interface of the array substrate 10, for playing an auxiliary supporting role for the display panel 1. Wherein, at least part of the orthographic projection of the first support structure 311 on the second substrate 21 overlaps with the orthographic projection of the blue light transmission area 233 on the second substrate 21, and at least part of the orthographic projection of the second support structure 312 on the second substrate 21 overlaps with the orthographic projection of the red light transmission area 231 on the second substrate 21.

[0065] It should be noted that the first support structure 311 and the second support structure 312 are respectively multiple and are arranged in an array in the liquid crystal layer 30. The arrangement positions of the first support structure 311 and the second support structure 312 may correspond to the positions of multiple driving units 12 in the driving unit 12 array. In addition, the arrangement density of the first support structure 311 and the second support structure 312 is associated with the pixel resolution of the display panel 1. In some examples of the present application, the smooth layer 13 may be only disposed on the surface of the driving unit 12 corresponding to the first support structure 311 on the side away from the first substrate 11, to support the first support structure 311, while the surface of the driving unit 12 corresponding to the second support structure 312 on the side away from the first substrate 11 is not provided with the smooth layer 13. Preferably, the surfaces of the driving unit 12 corresponding to the first support structure 311 and the driving unit 12 corresponding to the second support structure 312 on the side away from the first substrate 11 may be respectively provided with the smooth layer 13, to improve the compatibility of the mask plate for preparing the smooth layer 13.

[0066] In an implementation manner, the color filter substrate 20 further includes a light-shielding layer 22 disposed between the organic planarization layer 24 and the second substrate 21, and at least part of the orthographic projection of the smooth layer 13 on the second substrate 21 overlaps with the orthographic projection of the light-shielding layer 22 on the second substrate 21.

[0067] Exemplarily, as Figure 4 shown, the orthographic projection of the smooth layer 13 on the second substrate 21 is within the range of the orthographic projection of the light-shielding layer 22 on the second substrate 21. With such a setting, the light-shielding layer 22 can shield the position directly opposite to the smooth layer 13, to avoid the metal wire or the support structure 31 scratching the PI layer of the color filter substrate 20 and causing light leakage.

[0068] In a second aspect, an embodiment of the present application further provides a display device, including a display panel according to any one of the above embodiments of the present application.

[0069] In addition, other components of the display device in the above embodiments may adopt various technical solutions known to those of ordinary skill in the art now and in the future, and will not be described in detail here.

[0070] In the description of this specification, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0071] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0072] In the present application, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal connection or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0073] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and diagonally below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0074] The above disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure of this application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit this application. In addition, this application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0075] As described above, the above are only specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of various changes or substitutions, and these should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A display panel, characterized in that, Comprising: An array substrate, comprising a first substrate and a plurality of driving units disposed on the first substrate, wherein a smoothing layer is disposed on a side of the driving unit facing away from the first substrate; A color filter substrate, disposed opposite to the array substrate, comprising a second substrate and an organic planarization layer disposed on the second substrate; A liquid crystal layer, disposed between the array substrate and the color filter substrate, wherein a support structure is disposed in the liquid crystal layer, and two ends of the support structure are respectively abutted against surfaces of the smoothing layer and the organic planarization layer; wherein, materials of the smoothing layer and the support structure respectively comprise acrylic-based crosslinked polymers.

2. The display panel according to claim 1, wherein The materials of the smoothing layer and the support structure respectively comprise polymethyl methacrylate, polybutyl methacrylate or poly(methyl acrylate).

3. The display panel according to claim 1, wherein The thickness of the smoothing layer is 0.05 to 1 μm.

4. The display panel according to claim 1, wherein A surface of the smoothing layer facing away from the first substrate is curved in a direction towards the first substrate to form an arc surface, and a contact point of the end portion of the support structure with the smoothing layer is disposed adjacent to a bending center of the arc surface.

5. The display panel according to claim 1, wherein The driving unit comprises a metal gate, a gate insulating layer, an active layer, a metal source-drain electrode and an organic film layer, wherein the organic film layer has a boss structure protruding in a direction away from the first substrate, and a positive projection of the metal gate and the metal source-drain electrode on the first substrate is located within a positive projection of the boss structure on the first substrate; wherein, a positive projection of the smoothing layer on the first substrate and a positive projection of the boss structure on the first substrate are at least partially overlapped.

6. The display panel according to claim 1, wherein The color filter substrate further comprises a color filter layer disposed on the second substrate, and the color filter layer comprises a red light transmission region, a green light transmission region and a blue light transmission region; wherein, a positive projection of the smoothing layer on the second substrate and a positive projection of at least a part of the blue light transmission region on the second substrate are overlapped.

7. The display panel according to claim 6, wherein The support structure comprises a first support structure and a second support structure, a positive projection of the first support structure on the second substrate is located within a positive projection of the blue light transmission region on the second substrate, and a positive projection of the second support structure on the second substrate is located within a positive projection of the red light transmission region on the second substrate.

8. The display panel according to claim 7, wherein Two ends of the first support structure are respectively abutted against surfaces of the smoothing layer and the organic planarization layer, and one end of the second support structure is abutted against the surface of the organic planarization layer and the other end is spaced from the surface of the driving unit.

9. The display panel according to claim 6, wherein The color filter substrate further comprises a light-shielding layer disposed between the organic planarization layer and the second substrate, and a positive projection of the smoothing layer on the second substrate and a positive projection of at least a part of the light-shielding layer on the second substrate are overlapped.

10. A display device, characterized in that, A display panel comprising any one of claims 1 to 9.

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