Display panel and manufacturing method thereof

Abstract

The invention provides a display panel and a manufacturing method thereof, the display panel comprises a display module and a protective cover plate arranged on one side of a light emitting surface of the display module, the protective cover plate comprises a plurality of micro-nano structures, and each micro-nano structure comprises a first bulge and a plurality of second bulges arranged on one side, far away from the display module, of the first bulge; the distances between the first protrusions and the multiple first protrusions adjacent to the first protrusions are not equal, and the first protrusions and the multiple first protrusions are used for achieving the anti-dazzle effect. The multiple second protrusions are arranged at intervals and used for achieving the antibacterial effect. According to the display panel provided by the embodiment of the invention, the plurality of micro-nano structures can simultaneously have antibacterial and anti-fingerprint effects and an anti-dazzle effect.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof. Background Art

[0002] As electronic terminals gradually become indispensable products in people's daily work and life, the glass panels of existing electronic terminals are prone to adhere to dirt and sweat from the hands of users during use, which makes it easy for bacteria and mold to grow on the surface of the glass panel, posing a threat to the health of users. In order to solve the above technical problems, the prior art usually adopts two methods to achieve antibacterial and anti-fingerprint effects. The first method is to directly spray or evaporate a material with antibacterial ability on the cover plate. This solution can be achieved by mixing the silver-containing material with other functional organic materials (such as anti-fingerprint AF material) to make the cover glass have both antibacterial and anti-fingerprint effects. The second method is ion replacement, such as placing the glass cover plate in KNO 3 and AgNO 3 In the solution, Ag+ replaces Na+ to achieve antibacterial effect. The disadvantage of this solution is that other functional layers cannot be made on the glass cover, such as anti-fingerprint AF layer, anti-glare layer, etc. In addition, in order to improve the viewing angle of the display screen and reduce screen reflection, the existing anti-glare method is to spray or etch the glass cover to form an anti-glare layer, or attach AG film, etc.

[0003] However, in the prior art, there is no solution that can integrate the antibacterial and anti-fingerprint functions with the anti-glare function, which is a problem that needs to be solved urgently. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a display panel and a manufacturing method thereof, which can integrate the antibacterial and anti-fingerprint functions with the anti-glare function.

[0005] To achieve the above-mentioned purpose, an embodiment of the present disclosure provides a display panel, including a display module and a protective cover plate arranged on the light-emitting surface side of the display module, the protective cover plate including a plurality of micro-nano structures, the micro-nano structures including a first protrusion and a plurality of second protrusions arranged on the side of the first protrusion away from the display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, so as to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals, so as to achieve an antibacterial effect.

[0006] Optionally, a width of the first protrusion is greater than or equal to 1 μm and less than or equal to 400 μm; and a distance between adjacent first protrusions is greater than or equal to 1 μm and less than or equal to 400 μm.

[0007] Optionally, a width dimension of the second protrusion is greater than or equal to 150 nm and less than 1 μm; a width dimension of an interval between adjacent second protrusions is greater than or equal to 150 nm and less than 1 μm.

[0008] Optionally, the protective cover plate includes a film material containing or not containing antibacterial material and covering the light emitting surface of the display module, and the film material itself is formed with a plurality of the micro-nano structures on a side away from the light emitting surface.

[0009] Optionally, the protective cover plate includes a film material covering the light emitting surface of the display module, the film material itself has a plurality of the micro-nano structures formed on a side away from the light emitting surface, and the film material includes silicon dioxide, silicon nitride or aluminum oxide.

[0010] Optionally, the display module includes a transparent cover plate, the transparent cover plate is used as the protective cover plate, and the transparent cover plate itself is formed with a plurality of the micro-nano structures.

[0011] Optionally, surfaces of the plurality of micro-nano structures and spaces between adjacent micro-nano structures are covered with an antibacterial layer.

[0012] Optionally, the antibacterial layer includes an antibacterial organic layer, or an organic layer or an inorganic layer containing antibacterial metal.

[0013] Optionally, the first protrusion includes a column, a cone, or a frustum;

[0014] Optionally, the second protrusion includes a column, a cone, a frustum, or a needle-like protrusion or a needle cluster consisting of a plurality of needle-like protrusions.

[0015] Optionally, the second protrusion disposed on the surface of the first protrusion facing away from the light emitting surface includes at least one of a column, a cone, a sheet, and a needle-like protrusion or a needle cluster consisting of a plurality of needle-like protrusions.

[0016] As another technical solution, the present invention further provides a method for manufacturing a display panel, comprising:

[0017] A micro-nano structure template having a micro-nano structure pattern is provided, wherein the micro-nano structure pattern comprises a plurality of micro-nano structures, wherein the micro-nano structure comprises a first protrusion and a plurality of second protrusions arranged on a side of the first protrusion away from a display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, so as to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals, so as to achieve an antibacterial effect;

[0018] forming a film material on the light emitting surface of the display module;

[0019] The micro-nano structure template is used to replicate the micro-nano structure pattern on the film material by nano-imprinting.

[0020] Optionally, the method for preparing the micro-nanostructure template includes:

[0021] Performing a patterning process on the template body to form a plurality of micrometer pillars;

[0022] Performing a thermal reflow process on the template body having the micro-columns formed thereon, so that the micro-columns are formed into the first protrusions;

[0023] An etching process is performed on the first protrusions using an etching solution to form a plurality of second protrusions on a surface of each first protrusion facing away from the light emitting surface.

[0024] Optionally, the method for preparing the micro-nanostructure template includes:

[0025] Performing a patterning process on the template body to form a plurality of micrometer pillars;

[0026] Performing a thermal reflow process on the template body having the micro-columns formed thereon, so that the micro-columns are formed into the first protrusions;

[0027] forming a second protrusion pattern on the surface of the first protrusion facing away from the light emitting surface by a hydrothermal method;

[0028] A dry etching process is used to etch the surface of the first protrusion away from the light emitting surface, so as to copy the second protrusion pattern to the first protrusion to form a plurality of second protrusions.

[0029] Optionally, the method for preparing the micro-nanostructure template includes:

[0030] Performing a patterning process on the template body to form a plurality of micrometer pillars;

[0031] Performing a thermal reflow process on the template body having the micro-columns formed thereon, so that the micro-columns are formed into the first protrusions;

[0032] Providing a rigid template, wherein the rigid template has a nanostructure pattern;

[0033] Using the rigid template, replicating the nanostructure pattern on a flexible template by nanoimprinting;

[0034] Using the flexible template, replicating the nanostructure pattern on a PDMS template by nanoimprinting;

[0035] The nanostructure pattern on the PDMS template is transferred to the surface of the first protrusion of the template body facing away from the light emitting surface to form a plurality of the second protrusions.

[0036] Optionally, the method for preparing the micro-nanostructure template includes:

[0037] Performing a patterning process on the template body to form a plurality of micrometer pillars;

[0038] Performing a thermal reflow process on the template body having the micro-columns formed thereon, so that the micro-columns are formed into the first protrusions;

[0039] Using the template body, replicating the pattern of the first protrusion on a flexible template by nanoimprinting;

[0040] Using the flexible template, replicating the pattern of the first protrusion on a PDMS template by nanoimprinting;

[0041] The PDMS template is stretched and simultaneously subjected to a reactive plasma etching process, so that a plurality of orderly distributed sheets are formed on the surface of the first protrusion, namely, a plurality of the second protrusions.

[0042] Optionally, the patterning process includes an electron beam lithography process or a dry etching process using nanospheres as a mask.

[0043] As another technical solution, the present invention further provides a method for manufacturing a display panel, comprising:

[0044] A micro-nano structure template having a micro-nano structure pattern is provided, wherein the micro-nano structure pattern comprises a plurality of micro-nano structures, wherein the micro-nano structure comprises a first protrusion and a plurality of second protrusions arranged on a side of the first protrusion away from a display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, so as to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals, so as to achieve an antibacterial effect;

[0045] forming a film material on the light emitting surface of the display module;

[0046] Using the micro-nano structure template, replicating the micro-nano structure pattern on the film material by nanoimprinting;

[0047] The film material having the micro-nano structure pattern is used as a mask to perform a dry etching process on the glass cover plate of the display module to replicate the micro-nano structure pattern on the glass cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A partial cross-sectional view of a protective cover plate of a display panel provided in accordance with a first embodiment of the present invention;

[0049] Figure 2 for Figure 1 Top views of three shapes of the orthographic projection profiles of the first protrusion and the second protrusion on the light emitting surface used in;

[0050] Figure 3 A three-dimensional diagram of a protective cover plate of a display panel provided in a first embodiment of the present invention;

[0051] Figure 4 Another stereoscopic view of the protective cover plate of the display panel provided in the first embodiment of the present invention;

[0052] Figure 5 A partial cross-sectional view of a protective cover plate of a display panel provided in a third embodiment of the present invention;

[0053] Figure 6 for Figure 1 A partial cross-sectional view of a protective cover plate provided with an antibacterial layer;

[0054] Figure 7 A flow chart of a method for manufacturing a display panel provided by an embodiment of the present invention;

[0055] Figure 8 for Figure 7 A diagram of the manufacturing process of the micro-nano structure template in the manufacturing method adopted;

[0056] Fig. 9 for Figure 7 A diagram showing the manufacturing process of the protective cover plate in the manufacturing method adopted;

[0057] Fig.10 A first flow chart of a method for making a micro-nano structure template used in an embodiment of the present invention;

[0058] Fig.11 for Fig.10 Diagram of the fabrication process of the micro-nano structure template;

[0059] Fig.12 To adopt Fig.10 An electron microscope scanning image of a conical second protrusion on a micro-nanostructure template obtained by the manufacturing method;

[0060] Fig.13 A second flow chart of the method for making a micro-nano structure template used in an embodiment of the present invention;

[0061] Fig.14 for Fig.13 Diagram of the fabrication process of the micro-nano structure template;

[0062] Fig.15 A third flow chart of the method for making a micro-nano structure template used in an embodiment of the present invention;

[0063] Fig.16 for Fig.15 Diagram of the fabrication process of the micro-nano structure template;

[0064] Fig.17 A fourth flow chart of the method for making a micro-nano structure template used in an embodiment of the present invention;

[0065] Fig.18 for Fig.17 Diagram of the fabrication process of the micro-nano structure template;

[0066] Fig.19 To adopt Fig.17 An electron microscope scanning image of the second protrusion of the sheet body on the micro-nano structure template obtained by the manufacturing method;

[0067] Fig. 20 Another flow chart of a method for manufacturing a display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] The shapes and sizes of the components in the drawings do not reflect the actual proportions, and are only intended to facilitate understanding of the contents of the embodiments of the present invention.

[0070] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0071] The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of the configurations formed based on the manufacturing process. Therefore, the regions illustrated in the drawings have schematic properties, and the shapes of the regions shown in the drawings illustrate the specific shapes of the regions of the elements, but are not intended to be limiting.

[0072] An embodiment of the present invention provides a display panel, including a display module and a protective cover plate arranged on a light-emitting surface side of the display module, the protective cover plate including a plurality of micro-nano structures, the micro-nano structures including a first protrusion and a plurality of second protrusions arranged on a side of the first protrusion away from the display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, so as to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals, so as to achieve an antibacterial effect.

[0073] By making the spacing between the first protrusion and the plurality of first protrusions adjacent thereto unequal, that is, the spacing between the first protrusion and the other adjacent first protrusions is not equidistant, so that the plurality of first protrusions are arranged disorderly relative to the light-emitting surface of the display module. Specifically, there are many ways to achieve making the spacing between the first protrusion and the plurality of first protrusions adjacent thereto unequal, for example, at least one of the shapes, sizes and arrangements of the plurality of first protrusions is randomly arranged, without periodicity or regularity. Specifically, the shape of the first protrusion can be a combination of one or more shapes; the size of the first protrusion can be a combination of one or more sizes; the arrangement of the plurality of first protrusions includes an arrangement area and an arrangement density, and the arrangement area can be any area randomly divided on the light-emitting surface of the display module, and the arrangement density of the first protrusions on each arrangement area can also be randomly set. In addition, the above-mentioned disordered arrangement can also include a mixed arrangement of periodic arrangement and non-periodic arrangement, specifically, the plurality of first protrusions are randomly arranged non-periodically in a short range (for example, less than or equal to 2μm), and are arranged periodically in a long range (for example, greater than 2μm).

[0074] By setting the multiple second protrusions on each first protrusion at intervals, the micro-nano structure can have antibacterial and anti-fingerprint effects. At the same time, the multiple second protrusions can also increase the surface roughness of the protective cover plate to achieve the effect of diffuse reflection. At the same time, by making the spacing between the first protrusion and the multiple first protrusions adjacent to it unequal, that is, the multiple first protrusions are arranged disorderly relative to the light-emitting surface of the display module, it can be avoided that the light emitted by the display panel within a certain working wavelength range (for example, 380nm~760nm) is diffracted when encountering a periodic micro-nano structure, causing crosstalk and other disadvantages, so that the multiple micro-nano structures can have anti-glare effects. Therefore, the display panel provided by the embodiment of the present invention, its multiple micro-nano structures can have antibacterial and anti-fingerprint effects, as well as anti-glare effects.

[0075] The above-mentioned multiple micro-nano structures use physical antibacterial methods to sterilize the structure of bacteria. This method is basically applicable to all bacteria, and it is difficult for bacteria to develop drug resistance, and it is completely harmless to the human body. Specifically, the size of bacteria is usually between 1μm and 100μm, while the scale of the above-mentioned multiple micro-nano structures is usually hundreds of nanometers, and the minimum is tens of nanometers, in order to achieve sterilization. There are two main ways of physical antibacterial. The first antibacterial method is hydrophobic antibacterial. The super-hydrophobic surface has extremely low surface energy and bionic micro-nano structure, and has self-cleaning and low adhesion properties, which can significantly reduce bacterial adhesion, so that the coating has antibacterial function. Bionic super-hydrophobic surface has become an effective antibacterial method, by killing bacterial organisms or reducing adhesion strength to ensure that bacteria are easily removed before biofilms are formed on the surface. In addition, super-hydrophobic surfaces can prevent contamination by fingerprints, dirt, etc., that is, to achieve anti-fingerprint effect. The second antibacterial method is sharp microstructure antibacterial. When bacteria fall on the surface with sharp micro-nano structure, due to the tendency of bacteria themselves to extend, the cell wall becomes thinner and the strength is reduced, and the sharp microstructure is damaged, resulting in bacterial death. Based on the above principle, the multiple micro-nano structures adopted in the embodiment of the present invention can achieve antibacterial and anti-fingerprint effects by forming a super-hydrophobic surface by adopting a combination of a first protrusion and a plurality of second protrusions.

[0076] Specific embodiments of multiple micro-nano structures having antibacterial, anti-fingerprint and anti-glare effects are described in detail below.

[0077] First embodiment

[0078] See also Figure 1 The protective cover plate includes a film material 2 containing or not containing antibacterial material covering the light-emitting surface of the display module, and the film material 2 itself forms a plurality of micro-nano structures 21 on the side away from the light-emitting surface. The film material 2 covers the light-emitting surface of the display module, and the display module includes, for example, a transparent cover plate 1, and the surface of the transparent cover plate 1 facing the light-emitting direction is the above-mentioned light-emitting surface, and the transparent cover plate 1 is, for example, a glass cover plate, a silicon cover plate, or a sapphire cover plate, etc. The film material 2 covers the surface of the transparent cover plate 1 facing the light-emitting direction.

[0079] The membrane material 2 without antibacterial material means that the membrane material is a pure stamping membrane material, which is suitable for occasions where the antibacterial effect is not required. The membrane material 2 containing antibacterial material refers to a stamping membrane material doped with antibacterial material. The antibacterial material includes antibacterial metals (such as Ag, Cu, etc.) or antibacterial organic materials that match the stamping membrane material, etc., and is suitable for occasions where the antibacterial effect is required to be high. In addition, the membrane material can also contain antibacterial and antiviral materials to achieve bactericidal and antiviral effects. Antibacterial and antiviral materials are, for example, Ag, Cu, etc.

[0080] The film material 2 itself is formed with a plurality of micro-nano structures 21 on the side away from the light emitting surface, and the micro-nano structures 21 include a combination of a first protrusion and a plurality of second protrusions. Figure 1 As shown, the film material 2 itself is formed with a plurality of first protrusions on the side away from the light-emitting surface, and the first protrusions include a column 215, that is, the size of the first protrusions in the height direction is equal everywhere. The shape of the orthographic projection contour of the first protrusion (i.e., the column 215) on the light-emitting surface includes at least one of a circle, a square, a rectangle, a hexagon, and a trapezoid. For example, Figure 2 As shown in FIG. 2 (a), the shape of the orthographic projection contour of the first protrusion (ie, the column 215) on the light-emitting surface A is a circle; Figure 2 As shown in FIG. 2( b ), the shape of the orthographic projection contour of the first protrusion (ie, the column 215 ) on the light-emitting surface A is a rectangle; Figure 2 As shown in FIG. 2( c ), the orthographic projection profile of the first protrusion (i.e., the column 215) on the light-emitting surface A is in the shape of a square. At least one of the shapes, sizes, and arrangements of the plurality of first protrusions (i.e., the columns 215) on the light-emitting surface is arranged in a disordered manner so that the display panel has an anti-glare effect.

[0081] In other embodiments, the first protrusion may also include a cone, that is, the size of the first protrusion in the height direction decreases in the direction away from the light-emitting surface. The shape of the positive projection contour of the cone on the light-emitting surface includes at least one of a circle, a square, a rectangle, a hexagon and a trapezoid, that is, the cone may be a cone, a triangular pyramid, a quadrangular pyramid, etc. The end of the cone facing away from the light-emitting surface is a tip, and the tip can realize sharp microstructure antibacterial.

[0082] Alternatively, the first protrusion may also include a frustum, that is, the size of the first protrusion in the height direction decreases in the direction away from the light-emitting surface. The shape of the orthographic projection contour of the frustum on the light-emitting surface includes at least one of a circle, a square, a rectangle, a hexagon and a trapezoid. The end of the frustum away from the light-emitting surface is a plane with a smaller width dimension (also known as line width), and the width dimension of the plane is not greater than 100nm. Considering the process difficulty and the sterilization effect, the width dimension of the plane is optimal in the range of 30nm to 50nm. The frustum can also achieve sharp microstructure antibacterial.

[0083] In some optional embodiments, the width dimension of the first protrusion (eg Figure 1 The width B1 in the figure is greater than or equal to 1 μm and less than or equal to 400 μm; the interval between adjacent first protrusions (for example Figure 1 The interval B2) in the first protrusion is greater than or equal to 1 μm and less than or equal to 400 μm. By setting the width of the first protrusion and the interval between adjacent first protrusions within the above size range, an antibacterial effect can be achieved.

[0084] like Figure 1 As shown, the second protrusion may be a needle-like protrusion 214 or a needle cluster 214a composed of multiple needle-like protrusions 214 formed on the side of the film material 2 away from the light-emitting surface. A needle-like protrusion 214 or a needle cluster 214a composed of multiple needle-like protrusions 214 can achieve sharp microstructure antibacterial properties.

[0085] In some optional embodiments, the width dimension of the above-mentioned second protrusion is greater than or equal to 150nm and less than 1μm; the width dimension of the interval between adjacent second protrusions is greater than or equal to 150nm and less than 1μm. By setting the width dimension of the above-mentioned second protrusion and the interval between adjacent second protrusions within the above-mentioned size range, an antibacterial effect can be achieved. Preferably, the height range of a needle-shaped protrusion 214 is 5nm to 300nm; the width dimension B1 is 5nm to 200nm; the interval B2 between the needle-shaped protrusions 214 is 5nm to 200nm. In addition, the multiple needle-shaped protrusions 214 in a needle cluster 214a can be arranged periodically or disorderly.

[0086] like Figure 1 As shown, the film material 2 itself is formed with a plurality of first protrusions (e.g., columns 215) on the side away from the light emitting surface and a plurality of second protrusions (e.g., needle-shaped protrusions 214) arranged on the surface of the first protrusion (e.g., columns 215) away from the light emitting surface. The first protrusion (e.g., column 215) can achieve anti-fingerprint and anti-glare functions, and the plurality of second protrusions (e.g., needle-shaped protrusions 214) can achieve a bactericidal function of piercing bacterial cell walls. In some embodiments, the first protrusion (e.g., column 215) includes but is not limited to a column or a hemisphere or a frustum, etc., and the shape of the positive projection contour of the first protrusion (e.g., column 215) on the light emitting surface includes at least one of a circle, a square, a rectangle, a hexagon, and a trapezoid. For example, as Figure 2 As shown in FIG. 2 (a), the shape of the orthographic projection contour of the first protrusion (eg, the column 215) on the light-emitting surface A is a circle; Figure 2 As shown in (b) of FIG. 1 , the shape of the orthographic projection outline of the first protrusion (eg, column 215) on the light-emitting surface A is a rectangle; Figure 2 As shown in (c) in FIG. 1 , the shape of the orthographic projection contour of the first protrusion (i.e., the hemisphere 211) on the light-emitting surface A is a square. In some embodiments, the second protrusion disposed on the surface of the first protrusion (e.g., the column 215) away from the light-emitting surface A includes at least one of a column, a cone, a sheet, and a needle-like protrusion 214 or a needle cluster 214a composed of a plurality of needle-like protrusions 214. The shape of the orthographic projection contour of the second protrusion on the light-emitting surface includes at least one of a circle, a square, a rectangle, a hexagon, and a trapezoid. For example, as Figure 2As shown in Figures (a) to (c), the second protrusion arranged on the surface of the first protrusion (e.g., column 215) facing away from the light-emitting surface includes a needle cluster 214a composed of a plurality of needle-like protrusions 214, and the shape of the positive projection contour of each needle-like protrusion 214 on the light-emitting surface A is a square.

[0087] In a specific embodiment, Figure 1 As shown, the first protrusion includes a column 215, and a needle cluster 214a composed of a plurality of needle-shaped protrusions 214 is arranged on the surface of the column 215 facing away from the light-emitting surface. Among them, the width dimension of the column 215 (i.e., width B1) ranges from 900nm to 100μm, and the interval between the columns 215 (i.e., interval B2) ranges from 900nm to 100μm. The spacing between the column 215 and the plurality of adjacent columns 215 is not equal, that is, the spacing between the first protrusion and the other adjacent first protrusions is not equidistantly arranged, so that the plurality of first protrusions are arranged disorderly relative to the light-emitting surface of the display module. There are many ways to achieve the unequal spacing between the first protrusion and the plurality of adjacent first protrusions, for example, at least one of the shapes, sizes, and arrangements of the plurality of columns 215 is arranged disorderly, so that the display panel has an anti-glare effect. In the needle cluster 214a composed of multiple needle-like protrusions 214, the height of each needle-like protrusion 214 ranges from 5nm to 300nm; the width of each needle-like protrusion 214 ranges from 5nm to 200nm, and the interval between the needle-like protrusions 214 ranges from 5nm to 200nm. The multiple needle-like protrusions 214 in a needle cluster 214a can be arranged periodically or in a disordered manner.

[0088] In another specific embodiment, Figure 3 As shown, the first protrusion includes a hemisphere 211, and a plurality of second protrusions are arranged on the surface of the hemisphere 211 away from the light-emitting surface, and each second protrusion includes a column 216. The maximum width of the hemisphere 211 ranges from 2μm to 400μm; the maximum width of the intervals between the hemispheres 211 ranges from 2μm to 40μm. For the second protrusions (i.e., columns 216), their diameters range from 40nm to 100nm; the heights of the second protrusions (i.e., columns 216) range from 200nm to 1000nm; and the intervals between the second protrusions (i.e., columns 216) range from 40nm to 100nm. The smaller the size of the second protrusions (i.e., columns 216), the greater the arrangement density, and the better the sterilization effect. As shown Figure 4 As shown, each second protrusion may further include a cone 217, the maximum width of which is in the range of 150 nm to 200 nm; and the height of the cone 217 may be about 300 nm.

[0089] In another specific embodiment, the first protrusion comprises a hemisphere, and a plurality of second protrusions are arranged on the surface of the hemisphere away from the light emitting surface, and each second protrusion comprises a sheet body, such as Fig.19 As shown, the width of the sheet body ranges from 30nm to 100nm. A plurality of sheets are distributed parallel to each other on the surface of the hemisphere away from the light emitting surface.

[0090] Second embodiment

[0091] The display panel provided in this embodiment is different from the first embodiment described above only in that the film material covering the light-emitting surface of the display module is different. Specifically, in this embodiment, the protective cover plate includes a film material covering the light-emitting surface of the display module, and the film material itself is formed with a plurality of micro-nano structures 21 on the side away from the light-emitting surface, and the film material includes silicon dioxide, silicon nitride or aluminum oxide. The film material itself is formed with a plurality of micro-nano structures 21 on the side away from the light-emitting surface, and the micro-nano structures 21 can adopt the same structure as the first embodiment described above. Since the micro-nano structures 21 have been described in detail in the first embodiment described above, they will not be repeated here.

[0092] Third embodiment

[0093] The display panel provided in this embodiment is different from the first and second embodiments described above only in that: Figure 5 As shown, a plurality of micro-nano structures 21 in this embodiment are directly formed on the light-emitting surface of the transparent cover plate 1' of the display module. Specifically, in the embodiment, the display module includes a transparent cover plate 1', and the surface of the transparent cover plate 1' facing the light-emitting direction is the above-mentioned light-emitting surface. The transparent cover plate 1' is, for example, a glass cover plate, a silicon cover plate, or a sapphire cover plate, etc. The transparent cover plate 1' is used as a protective cover plate, and the transparent cover plate 1' itself is formed with a plurality of micro-nano structures 21'. The micro-nano structure 21' can adopt the same structure as the first embodiment described above, for example, including a plurality of first protrusions, and the first protrusion includes a column 215', which is Figure 1 Since the micro-nano structure 21' has the same structure as the micro-nano structure 21 in the first embodiment, and the micro-nano structure 21 has been described in detail in the first embodiment, it will not be repeated here.

[0094] On the basis of the above first, second and third embodiments, in order to further improve the antibacterial effect, as Figure 6 As shown, Figure 1 Taking the micro-nano structure 21 shown as an example, the surfaces of the multiple micro-nano structures 21 and the intervals between adjacent micro-nano structures 21 are covered with an antibacterial layer 22. The antibacterial layer 22 includes, for example, an antibacterial organic layer, or an organic layer or an inorganic layer containing an antibacterial metal. The antibacterial layer 22 can also be a film layer with bactericidal and antiviral effects. The methods for making the antibacterial layer 22 include, but are not limited to, evaporation, spraying, spin coating, etc.

[0095] As another technical solution, the embodiment of the present invention further provides a method for manufacturing a display panel. Figure 7 , the method comprising:

[0096] S1. providing a micro-nano structure template having a micro-nano structure pattern;

[0097] The above-mentioned micro-nano structure pattern includes multiple micro-nano structures, which include a first protrusion and multiple second protrusions arranged on the side of the first protrusion away from the display module; wherein the spacing between the first protrusion and the multiple first protrusions adjacent to it is not equal, which is used to achieve an anti-glare effect; the multiple second protrusions are arranged at intervals, which is used to achieve an antibacterial effect.

[0098] S2, forming a film material on the light emitting surface of the display module;

[0099] S3. Use a micro-nano structure template and adopt nano-imprinting method to copy the micro-nano structure pattern on the film material.

[0100] The manufacturing method of the display panel provided by the embodiment of the present invention can form the above-mentioned micro-nano structure on the film material by using a micro-nano structure template to copy the micro-nano structure pattern on the film material by nano-imprinting. The process of using this manufacturing method is simple and the cost is low. At the same time, the above-mentioned micro-nano structure includes a first protrusion and a plurality of second protrusions arranged on the side of the first protrusion away from the display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, which is used to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals, which is used to achieve an antibacterial effect. By making the spacing between the first protrusion and the plurality of first protrusions adjacent thereto unequal, that is, the spacing between the first protrusion and the other adjacent first protrusions is not equidistant, so that the plurality of first protrusions are arranged disorderly relative to the light-emitting surface of the display module. Specifically, there are many ways to achieve making the spacing between the first protrusion and the plurality of first protrusions adjacent thereto unequal, for example, at least one of the shapes, sizes and arrangements of the plurality of first protrusions is randomly arranged, without periodicity or regularity. Specifically, the shape of the first protrusion may be a combination of one or more shapes; the size of the first protrusion may be a combination of one or more sizes; the arrangement of the plurality of first protrusions includes an arrangement area and an arrangement density, the arrangement area may be any area randomly divided on the light-emitting surface of the display module, and the arrangement density of the first protrusions on each arrangement area may also be randomly set. In addition, the above-mentioned disordered arrangement may also include a mixed arrangement of periodic arrangement and non-periodic arrangement, specifically, the plurality of first protrusions are randomly non-periodic in a short range (e.g., less than or equal to 2 μm), and are periodically arranged in a long range (e.g., greater than 2 μm).

[0101] By setting the multiple second protrusions on each first protrusion at intervals, the micro-nano structure can have antibacterial and anti-fingerprint effects. At the same time, the multiple second protrusions can also increase the surface roughness of the protective cover plate to achieve the effect of diffuse reflection. At the same time, by making the spacing between the first protrusion and the multiple first protrusions adjacent to it unequal, that is, the multiple first protrusions are arranged disorderly relative to the light-emitting surface of the display module, it can be avoided that the light emitted by the display panel within a certain working wavelength range (for example, 380nm~760nm) is diffracted when encountering a periodic micro-nano structure, causing crosstalk and other disadvantages, so that the multiple micro-nano structures can have anti-glare effects. Therefore, the display panel provided by the embodiment of the present invention, its multiple micro-nano structures can have antibacterial and anti-fingerprint effects, as well as anti-glare effects.

[0102] The above-mentioned multiple micro-nano structures use physical antibacterial methods to sterilize the structure of bacteria. This method is basically applicable to all bacteria, and it is difficult for bacteria to develop drug resistance, and it is completely harmless to the human body. Specifically, the size of bacteria is usually between 1μm and 100μm, while the scale of the above-mentioned multiple micro-nano structures is usually hundreds of nanometers, and the minimum is tens of nanometers, in order to achieve sterilization. There are two main ways of physical antibacterial. The first antibacterial method is hydrophobic antibacterial. The super-hydrophobic surface has extremely low surface energy and bionic micro-nano structure, and has self-cleaning and low adhesion properties, which can significantly reduce bacterial adhesion, so that the coating has antibacterial function. Bionic super-hydrophobic surface has become an effective antibacterial method, by killing bacterial organisms or reducing adhesion strength to ensure that bacteria are easily removed before biofilms are formed on the surface. In addition, super-hydrophobic surfaces can prevent contamination by fingerprints, dirt, etc., that is, to achieve anti-fingerprint effect. The second antibacterial method is sharp microstructure antibacterial. When bacteria fall on the surface with sharp micro-nano structure, due to the tendency of bacteria themselves to extend, the cell wall becomes thinner and the strength is reduced, and the sharp microstructure is damaged, resulting in bacterial death. Based on the above principle, the multiple micro-nano structures adopted in the embodiment of the present invention can achieve antibacterial and anti-fingerprint effects by forming a super-hydrophobic surface by adopting a combination of a first protrusion and a plurality of second protrusions.

[0103] In some optional embodiments, in the above step S1, first, as Figure 8 As shown in FIG. (1), the pattern of the micro-nano structure 21 can be made by electron beam exposure process, that is, an electron beam film material is coated on the template body 3, and the film material is patterned to obtain the pattern of the micro-nano structure 21. The template body 3 is a silicon wafer or other substrate material that can be applied to electron beam exposure. Then, as shown in FIG. Figure 8 As shown in FIG. (2), the pattern of the micro-nano structure 21 is replicated on the soft template 4 by nanoimprinting, and used as a micro-nano structure template having a nanostructure pattern 41. Figure 8As shown in FIG. (3) in the figure. In practical applications, the method for making the above-mentioned nanostructure pattern 41 includes but is not limited to laser direct writing, single-point diamond and other processes. In the above-mentioned step S2, as Fig. 9 As shown in FIG. (1) in FIG. 1 , a film material 2' is formed on the light emitting surface of the display module. The film material 2' may be, for example, a film material containing or not containing antibacterial material. The display module may include, for example, a transparent cover plate 1. The surface of the transparent cover plate 1 facing the light emitting direction is the above-mentioned light emitting surface. The transparent cover plate 1 may be, for example, a glass cover plate, a silicon cover plate or a sapphire cover plate, etc. The film material 2' covers the surface of the transparent cover plate 1 facing the light emitting direction. In another optional embodiment, in the above step S2, the film material 2' may also include silicon dioxide, silicon nitride or aluminum oxide, etc. In the above step S3, as Figure 8 As shown in FIG. (2), a micro-nano structure template (i.e., a soft template 4 having a nanostructure pattern 41) is used to replicate the nanostructure pattern 41 on the above-mentioned film material 2' by nanoimprinting, and finally a micro-nano structure 21 is formed on the film material 2', as shown in FIG. Figure 8 As shown in Figure (3) in .

[0104] On this basis, in order to further improve the antibacterial effect, the above step S3 further includes:

[0105] S4, forming an antibacterial layer on the surfaces of the plurality of micro-nano structures 21 and the spaces between adjacent micro-nano structures 21, such as Figure 6 As shown in the antibacterial layer 22.

[0106] The antibacterial layer 22 includes, for example, an antibacterial organic layer, or an organic layer or an inorganic layer containing antibacterial metal. The antibacterial layer 22 may also be a film layer having bactericidal and antiviral effects. Methods for making the antibacterial layer 22 include, but are not limited to, evaporation, spraying, spin coating, and the like.

[0107] The above steps S1 to S4 are applicable to the manufacture of the display panel provided by any one of the first and second embodiments.

[0108] In some other optional embodiments, in the above step S1, there may be multiple methods for making the micro-nano structure template, for example, Fig.10 and Fig.11 As shown, the first method for making a micro-nanostructure template includes:

[0109] S11, performing a patterning process on the template body 3 to form a plurality of micron columns 31, such as Fig.11 As shown in Figures (1) and (2);

[0110] The patterning process includes, for example, an electron beam lithography process or a dry etching process using nanospheres as a mask.

[0111] S12, performing a heat reflow process on the template body 3 formed with the micron pillars 31, so that the micron pillars 31 are formed into first protrusions (ie, hemispherical bodies 211), as shown in FIG. Fig.11 As shown in Figure (3);

[0112] Taking the template body 3 as photoresist as an example, the above-mentioned thermal reflow process is a process in which the developed photoresist undergoes structural softening and deformation under the condition of heating temperature higher than the glass transition temperature. For example, after completing the thermal reflow process in the above-mentioned step S12, the contours of the plurality of micrometer pillars 31 on the template body 3 are deformed into a hemispherical contour, thereby forming a micro lens array (MLA) structure on the template body 3. Of course, in practical applications, after completing the above-mentioned thermal reflow process, the shape of the orthographic projection contour of the micrometer pillar on the light-emitting surface includes at least one of a circle, a square, a rectangle, a hexagon and a trapezoid.

[0113] It should be noted that the above-mentioned MLA structure is disordered, that is, at least one of the shape, size and arrangement is disordered, which can be achieved by using masks of different sizes in the photolithography process of the above-mentioned step S11, so that the finally formed micro-nano structure 21 can play an anti-dizziness function.

[0114] S13, using an etching solution to perform an etching process on the first protrusions, forming a plurality of second protrusions (eg, Fig.11 The specific structure of the cone 217 formed on the surface of each first protrusion (i.e., the hemispherical body 211) away from the light emitting surface is as follows: Fig.12 shown.

[0115] In the above step S13, the first protrusion (ie, the hemispherical body 211) is etched by wet etching to form a plurality of second protrusions (eg, Fig.11 The cone 217 in the middle). The etching solution is, for example, a KOH solution, and the height of the first protrusion (i.e., the hemisphere 211) (or the depth of the interval between the first protrusions) can be controlled by controlling the concentration, temperature and reaction time of the etching solution. In a specific embodiment, the etching solution is a KOH solution with a concentration of 6 mol / L; the temperature is 80°C; and the reaction time is 30s. The above parameters can be used to produce a conical second protrusion with a width range of 150nm to 200nm and a height of about 300nm.

[0116] like Fig.13 and Fig.14 As shown, the second method for making the micro-nanostructure template includes:

[0117] S11', patterning the template body 3 to form a plurality of micron columns 31, such as Fig.14 As shown in Figures (1) and (2);

[0118] This step S11 ′ is the same as the above-mentioned step S11 .

[0119] S12′, performing a heat reflow process on the template body 3 formed with the micron pillars 31, so that the micron pillars 31 are formed into first protrusions (ie, hemispherical bodies 211), as shown in FIG. Fig.14 As shown in Figure (3);

[0120] This step S12' is the same as the above step S12.

[0121] S13', using a hydrothermal method to form a second protrusion pattern 216a on the surface of the first protrusion (ie, the hemispherical body 211) away from the light emitting surface, such as Fig.14 As shown in Figure (4);

[0122] The hydrothermal method is to use an aqueous solution as a reaction medium in a special closed reaction container (autoclave), and to create a high temperature (100°C to 1000°C) and high pressure (1MPa to 100MPa) reaction environment by heating the reaction container, so that the usually insoluble or insoluble substances are dissolved and recrystallized. Specifically, in the above step S13', the hydrothermal method can be used to synthesize zinc oxide nanowires, specifically, the aqueous solution containing zinc nitrate, zinc chloride and hexamethylenetetramine (HMTA) is heated and deposited to generate zinc oxide, and the zinc oxide nanowires are the above second protrusion pattern 216a composed of a plurality of second protrusions.

[0123] S14′, using a dry etching process to etch the surface of the first protrusion (ie, the hemispherical body 211) away from the light-emitting surface, so as to replicate the second protrusion pattern 216a on the first protrusion (ie, the hemispherical body 211), to form a plurality of second protrusions, for example, including Fig.14 Column 216 in Figure (5) in FIG.

[0124] The step S14′ is used to transfer the second protrusion pattern 216a to the first protrusion, thereby forming a plurality of second protrusions (eg, Fig.14 Column 216 in Figure (5) in FIG.

[0125] like Fig.15 and Fig.16 As shown, the third method for making the micro-nano structure template includes:

[0126] S11”, performing a patterning process on the template body to form a plurality of micrometer columns;

[0127] This step S11" is the same as the above step S11.

[0128] S12”, performing a thermal reflow process on the template body formed with the micron columns, so that the micron columns are formed into first protrusions;

[0129] This step S12" is the same as the above step S12.

[0130] S13”, providing a rigid template 5, wherein the rigid template 5 has a second convex pattern 51;

[0131] In the above step S13", if Fig.16 As shown in Figures (1) to (4) in FIG. 1 , the photoresist 6 covered on the rigid template 5 can be exposed and developed using electron beam exposure (EBL) technology to prepare a nanostructure pattern (for example, Fig.16 As shown in FIG. 3 , the nanostructure pattern is composed of a plurality of nanorods 61 ). The nanostructure pattern is then transferred to the rigid template 5 by a dry etching process (eg, an ICP process).

[0132] The second protruding pattern 51 transferred onto the rigid template 5 may be the same as the nanostructure pattern prepared by photoresist exposure and development (ie, a plurality of nanorods 61 ), or may also be a plurality of nanocones.

[0133] S14”, using the rigid template 5, the second protrusion pattern 51 (ie, a plurality of nanorods or a plurality of nanocones) transferred to the rigid template 5 is replicated on a flexible template 7 by nanoimprinting, such as Fig.16 As shown in Figures (5) to (6);

[0134] S15”, using the flexible template 7, the nanostructure pattern (ie, multiple nanorods 71 ​​or multiple nanocones) is replicated on a PDMS (polydimethylsiloxane) template 8 by nanoimprinting. Fig.16 As shown in Figures (7) to (8);

[0135] S16”, transferring the second protrusion pattern (ie, a plurality of nanorods 81 or a plurality of nanocones) on the PDMS template 8 to the surface of the first protrusion of the template body away from the light emitting surface, to form a plurality of second protrusions.

[0136] like Fig.17 and Fig.18 As shown, the fourth method for making the micro-nano structure template includes:

[0137] S11”′, performing a patterning process on the template body 3 to form a plurality of micron columns 31;

[0138] This step S11''' is the same as the above step S11.

[0139] S12'', performing a thermal reflow process on the template body 3 formed with the micron pillars 31, so that the micron pillars are formed into first protrusions (ie, hemispherical bodies 211);

[0140] This step S12''' is the same as the above step S12.

[0141] S13″′, using the template body 3, the pattern of the first protrusion (ie, the hemisphere 211) is copied onto a flexible template 9 by nanoimprinting, such as Fig.18 As shown in Figures (1) to (2);

[0142] S14'', using the flexible template 9, the pattern 91 of the first protrusion (ie, the hemisphere 211) is replicated on a PDMS template 8 by nanoimprinting, forming a Fig.18 The pattern 81 shown in Figures (3) to (4);

[0143] S15″′, stretching the PDMS template 8 and simultaneously performing a reactive plasma etching process, so that the surface of the first protrusion (ie, the hemisphere 211) in the pattern 81 forms a plurality of orderly distributed sheets, namely, a plurality of second protrusions, such as Fig.18 As shown in Figures (6) to (8) of FIG. 1 , a portion of the sheet 811 and another portion of the sheet 812 are perpendicular to each other. Fig.19 As shown, the corresponding Fig.18 FIG. 7 is a scanning electron microscope image of the sheet 811 shown in FIG.

[0144] The width of the sheet is in the range of 30nm to 100nm. The plurality of sheets are distributed parallel to each other on the surface of the first protrusion away from the light emitting surface.

[0145] As another technical solution, an embodiment of the present invention further provides a method for manufacturing a display panel, such as Fig. 20 As shown, the method includes:

[0146] S101, providing a micro-nano structure template having a micro-nano structure 21 pattern;

[0147] The above-mentioned micro-nano structure pattern includes multiple micro-nano structures, which include a first protrusion and multiple second protrusions arranged on the side of the first protrusion away from the display module; wherein the spacing between the first protrusion and the multiple first protrusions adjacent to it is not equal, which is used to achieve an anti-glare effect; the multiple second protrusions are arranged at intervals, which is used to achieve an antibacterial effect.

[0148] S102, forming a film material on the light emitting surface of the display module;

[0149] S103, using a micro-nano structure template to replicate the micro-nano structure pattern on the film material by nanoimprinting;

[0150] S104, using the film material with the micro-nano structure pattern as a mask, performing a dry etching process on the glass cover of the display module to replicate the micro-nano structure pattern on the glass cover, for example, forming a Figure 5 The micro-nano structure 21' is shown.

[0151] The above steps S101 to S104 are applicable to the manufacture of the display panel provided in the above third embodiment.

[0152] In summary, the display panel and its manufacturing method provided by the embodiment of the present invention can form the above-mentioned micro-nano structure on the film material by using a micro-nano structure template to copy the micro-nano structure pattern on the film material by nanoimprinting. The process of using this manufacturing method is simple and the cost is low. At the same time, the above-mentioned micro-nano structure includes a first protrusion and a plurality of second protrusions arranged on the side of the first protrusion away from the display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, which is used to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals to achieve an antibacterial effect. The plurality of second protrusions can also increase the surface roughness of the protective cover plate to achieve a diffuse reflection effect. At the same time, by making the spacing between the first protrusion and the plurality of first protrusions adjacent thereto unequal, that is, the plurality of first protrusions are arranged disorderly relative to the light-emitting surface of the display module, it can be avoided that the light emitted by the display panel within a certain working wavelength range (for example, 380nm to 760nm) is diffracted when encountering a periodic micro-nano structure, causing crosstalk and other defects, so that the plurality of micro-nano structures can have an anti-glare effect. Therefore, the display panel provided by the embodiment of the present invention, whose multiple micro-nano structures can simultaneously have antibacterial and anti-fingerprint effects, as well as anti-glare effects.

[0153] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display panel, comprising a display module and a protective cover plate arranged on a light emitting surface side of the display module, characterized in that: The protective cover plate includes a plurality of micro-nano structures, and the micro-nano structures include a first protrusion and a plurality of second protrusions arranged on a side of the first protrusion away from the display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, so as to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals, so as to achieve an antibacterial effect.

2. The display panel according to claim 1, characterized in that: The width of the first protrusion is greater than or equal to 1 μm and less than or equal to 400 μm; the interval between adjacent first protrusions is greater than or equal to 1 μm and less than or equal to 400 μm.

3. The display panel according to claim 1, characterized in that: The width of the second protrusion is greater than or equal to 150 nm and less than 1 μm; the width of the interval between adjacent second protrusions is greater than or equal to 150 nm and less than 1 μm.

4. The display panel according to claim 1, characterized in that: The protective cover plate includes a film material containing or not containing antibacterial material and covering the light-emitting surface of the display module, and the film material itself is formed with a plurality of the micro-nano structures on a side away from the light-emitting surface.

5. The display panel according to claim 1, characterized in that: The protective cover plate includes a film material covering the light-emitting surface of the display module. The film material itself is formed with a plurality of micro-nano structures on a side away from the light-emitting surface. The film material includes silicon dioxide, silicon nitride or aluminum oxide.

6. The display panel according to claim 1, characterized in that: The display module includes a transparent cover plate, which is used as the protective cover plate, and the transparent cover plate itself is formed with a plurality of the micro-nano structures.

7. The display panel according to any one of claims 1 to 6, characterized in that: The surfaces of the plurality of micro-nano structures and the spaces between adjacent micro-nano structures are all covered with an antibacterial layer.

8. The display panel according to claim 7, characterized in that: The antibacterial layer includes an antibacterial organic layer, or an organic layer or an inorganic layer containing antibacterial metal.

9. The display panel according to any one of claims 1 to 6, characterized in that: The first protrusion includes a column, a cone, or a frustum.

10. The display panel according to any one of claims 1 to 6, characterized in that: The second protrusion includes a column, a cone, a frustum, or a needle-like protrusion or a needle cluster composed of a plurality of needle-like protrusions.

11. The display panel according to any one of claims 1 to 6, characterized in that: The second protrusion disposed on the surface of the first protrusion away from the light emitting surface includes at least one of a column, a cone, a sheet, and a needle-like protrusion or a needle cluster consisting of a plurality of needle-like protrusions.

12. A method for manufacturing a display panel, characterized in that: include: A micro-nano structure template having a micro-nano structure pattern is provided, wherein the micro-nano structure pattern comprises a plurality of micro-nano structures, wherein the micro-nano structure comprises a first protrusion and a plurality of second protrusions arranged on a side of the first protrusion away from a display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, so as to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals, so as to achieve an antibacterial effect; forming a film material on the light emitting surface of the display module; The micro-nano structure template is used to replicate the micro-nano structure pattern on the film material by nano-imprinting.

13. The method for manufacturing a display panel according to claim 12, characterized in that: The method for making the micro-nano structure template comprises: Performing a patterning process on the template body to form a plurality of micrometer pillars; Performing a thermal reflow process on the template body having the micro-columns formed thereon, so that the micro-columns are formed into the first protrusions; An etching process is performed on the first protrusions using an etching solution to form a plurality of second protrusions on a surface of each first protrusion facing away from the light emitting surface.

14. The method for manufacturing a display panel according to claim 12, wherein: The method for making the micro-nano structure template comprises: Performing a patterning process on the template body to form a plurality of micrometer pillars; Performing a thermal reflow process on the template body having the micro-columns formed thereon, so that the micro-columns are formed into the first protrusions; forming a second protrusion pattern on the surface of the first protrusion facing away from the light emitting surface by a hydrothermal method; A dry etching process is used to etch the surface of the first protrusion away from the light emitting surface, so as to copy the second protrusion pattern to the first protrusion to form a plurality of second protrusions.

15. The method for manufacturing a display panel according to claim 12, characterized in that: The method for making the micro-nano structure template comprises: Performing a patterning process on the template body to form a plurality of micrometer pillars; Performing a thermal reflow process on the template body having the micro-columns formed thereon, so that the micro-columns are formed into the first protrusions; Providing a rigid template, wherein the rigid template has a nanostructure pattern; Using the rigid template, replicating the nanostructure pattern on a flexible template by nanoimprinting; Using the flexible template, replicating the nanostructure pattern on a PDMS template by nanoimprinting; The nanostructure pattern on the PDMS template is transferred to the surface of the first protrusion of the template body facing away from the light emitting surface to form a plurality of the second protrusions.

16. The method for manufacturing a display panel according to claim 12, wherein: The method for making the micro-nano structure template comprises: Performing a patterning process on the template body to form a plurality of micrometer pillars; Performing a thermal reflow process on the template body having the micro-columns formed thereon, so that the micro-columns are formed into the first protrusions; Using the template body, replicating the pattern of the first protrusion on a flexible template by nanoimprinting; Using the flexible template, replicating the pattern of the first protrusion on a PDMS template by nanoimprinting; The PDMS template is stretched and simultaneously subjected to a reactive plasma etching process, so that a plurality of orderly distributed sheets are formed on the surface of the first protrusion, namely, a plurality of the second protrusions.

17. The method for manufacturing a display panel according to any one of claims 13 to 16, characterized in that: The patterning process includes an electron beam lithography process or a dry etching process using nanospheres as a mask.

18. A method for manufacturing a display panel, characterized in that: include: A micro-nano structure template having a micro-nano structure pattern is provided, wherein the micro-nano structure pattern comprises a plurality of micro-nano structures, wherein the micro-nano structure comprises a first protrusion and a plurality of second protrusions arranged on a side of the first protrusion away from a display module; wherein the spacing between the first protrusion and the plurality of first protrusions adjacent thereto is unequal, so as to achieve an anti-glare effect; and the plurality of second protrusions are arranged at intervals, so as to achieve an antibacterial effect; forming a film material on the light emitting surface of the display module; Using the micro-nano structure template, replicating the micro-nano structure pattern on the film material by nano-imprinting; The film material having the micro-nano structure pattern is used as a mask to perform a dry etching process on the glass cover plate of the display module to replicate the micro-nano structure pattern on the glass cover plate.

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