Display panel

Abstract

The invention provides a display panel which 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 first protrusions arranged at intervals and a plurality of antibacterial second protrusions distributed in a second area outside a first area where the first protrusions are located, the height of each first protrusion is larger than that of each second protrusion. According to the scheme, the antibacterial microstructure can be prevented from being damaged by external factors such as user touch and external object friction, so that the antibacterial and anti-fingerprint effects can be ensured, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel. 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 sticking dirt and sweat stains from the user's hands during use, which makes it easy for bacteria and mold to grow on the surface of the glass panel, thus posing a threat to the user's health. In order to solve the above technical problems, the prior art usually sets an antibacterial microstructure on the cover to achieve an antibacterial effect.

[0003] However, the above antibacterial microstructures can be easily damaged by external factors such as user touch and friction with foreign objects during actual use, thus affecting the antibacterial effect and service life. 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 that can prevent the antibacterial microstructure from being destroyed by external factors such as user touch and friction with foreign objects, thereby ensuring the antibacterial and anti-fingerprint effects and improving the service life.

[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 one side of a light-emitting surface of the display module, the protective cover plate including a plurality of first protrusions arranged at intervals, and a plurality of second protrusions for antibacterial purposes distributed in a second area outside a first area where each of the first protrusions is located, wherein the height of each of the first protrusions is greater than the height of each of the second protrusions.

[0006] Optionally, a height of each of the first protrusions is greater than or equal to 1 μm and less than or equal to 5 μm.

[0007] Optionally, a height of each of the second protrusions is greater than or equal to 200 nm and less than or equal to 1000 nm.

[0008] Optionally, the maximum width of the first protrusion is greater than or equal to 500 nm and less than or equal to 5 μm; and the minimum interval between adjacent first protrusions is greater than or equal to 100 μm and less than or equal to 200 μm.

[0009] Optionally, the maximum width of the second protrusion is greater than or equal to 40 nm and less than or equal to 100 nm; the minimum interval between adjacent second protrusions is greater than or equal to 40 nm and less than or equal to 100 nm.

[0010] Optionally, a plurality of the first protrusions are arranged in a first rectangular array, and rows and columns of the first rectangular array are respectively parallel to two adjacent side edges of the light emitting surface of the display module;

[0011] A plurality of the second protrusions are arranged in a second rectangular array in the second region, and the rows and columns of the second rectangular array are respectively parallel to two adjacent side edges of the light emitting surface of the display module.

[0012] Optionally, a maximum width dimension of a first end of the first protrusion close to the light emitting surface of the display module is greater than a maximum width dimension of a second end far from the light emitting surface of the display module.

[0013] Optionally, the surfaces of each of the first protrusions, each of the second protrusions, the spaces between adjacent first protrusions, and the spaces between adjacent second protrusions are all covered with an antibacterial layer.

[0014] Optionally, each of the first protrusions and each of the second protrusions are made of antibacterial material.

[0015] Optionally, the second protrusion is a conical protrusion, the tip of the conical protrusion has an arc surface, and the radius of curvature of the arc surface is greater than or equal to 30 nm and less than or equal to 50 nm.

[0016] Optionally, the protection 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 the first protrusions and a plurality of the second protrusions on a side away from the light emitting surface.

[0017] 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 first protrusions and a plurality of the second protrusions.

[0018] As another technical solution, an embodiment of the present invention further provides a method for manufacturing a display panel, comprising:

[0019] A template having a protrusion structure pattern is provided, wherein the protrusion structure pattern comprises a plurality of first protrusions arranged at intervals, and a plurality of second protrusions for antibacterial function distributed in a second area outside a first area where each of the first protrusions is located, wherein the height of each of the first protrusions is greater than the height of each of the second protrusions;

[0020] forming a glue material on a light emitting surface of the display module;

[0021] The template is used to replicate the protruding structure pattern on the adhesive material by nano-imprinting.

[0022] Optionally, the method for making the template includes:

[0023] Providing a sub-template having a convex structure pattern, wherein the size of the sub-template is smaller than the size of the template;

[0024] The sub-template is used to form the template with the raised structure pattern by nano-imprinting and splicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A first partial cross-sectional view of a protective cover plate of a display panel provided by an embodiment of the present invention;

[0026] Figure 2 A second partial cross-sectional view of the protective cover plate of the display panel provided by the embodiment of the present invention;

[0027] Figure 3 A third partial cross-sectional view of the protective cover plate of the display panel provided by the embodiment of the present invention;

[0028] Figure 4 A fourth partial cross-sectional view of the protective cover plate of the display panel provided by the embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the arrangement of the first protrusion and the second protrusion is provided for an embodiment of the present invention;

[0030] Figure 6 A flow chart of a method for manufacturing a display panel provided by an embodiment of the present invention;

[0031] Figure 7 A diagram showing the process of making a template in an embodiment of the present invention;

[0032] Figure 8 A schematic diagram of a template composed of multiple sub-templates in an embodiment of the present invention;

[0033] Fig. 9 A diagram showing a first manufacturing process of a protective cover plate of a display panel provided by an embodiment of the present invention;

[0034] Fig.10 A diagram of a second manufacturing process of a protective cover plate of a display panel provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] See also Figure 1 , an embodiment of the present invention 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, for example, includes a film material 1 covering the light-emitting surface of the display module; or, the display module includes a transparent cover plate, the surface of the transparent cover plate facing the light-emitting direction is the above-mentioned light-emitting surface, and the transparent cover plate is used as a protective cover plate. Among them, the protective cover plate includes a plurality of first protrusions 2 arranged at intervals, and a plurality of second protrusions 3 for antibacterial distributed in a second area outside the first area where each first protrusion 2 is located, wherein the height H1 of each first protrusion 2 is greater than the height H2 of each second protrusion 3. Specifically, taking the protective cover plate including the film material 1 as an example, each first protrusion 2 is distributed on the surface of the film material 1 away from the light-emitting surface, the area where each first protrusion 2 of the surface is located is the above-mentioned first area, and each second protrusion 3 is distributed in the second area of ​​the surface except the first area.

[0040] The plurality of second protrusions 3 have antibacterial and anti-fingerprint effects. Furthermore, by making the height H1 of each first protrusion 2 greater than the height H2 of each second protrusion 3, each first protrusion 2 can act as a barrier to prevent foreign objects from contacting each second protrusion 3, thereby protecting each second protrusion 3 and preventing each second protrusion 3 from being damaged by external factors such as user touch and friction with foreign objects, thereby ensuring the antibacterial effect and increasing the service life.

[0041] The above-mentioned multiple second protrusions 3 are sterilized by physical antibacterial methods targeting 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, and the scale of the above-mentioned multiple second protrusions 3 is usually hundreds of nanometers, with a minimum of tens of nanometers, 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, the super-hydrophobic surface 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 a surface with a sharp micro-nano structure, the bacteria themselves tend to extend, causing the cell wall to become thinner and the strength to decrease. The sharp microstructure will damage the bacteria and cause them to die. Based on the above principle, the embodiment of the present invention can achieve antibacterial and anti-fingerprint effects by using multiple second protrusions 3 to form a super-hydrophobic surface.

[0042] In some optional embodiments, the height H1 of each first protrusion 2 is greater than or equal to 1 μm and less than or equal to 5 μm. The height H1 of the first protrusion 2 refers to the distance between one end of the first protrusion 2 away from the light-emitting surface of the display module and the other end of the first protrusion 2 close to the light-emitting surface of the display module. The height of each first protrusion 2 should not be too large, otherwise it will affect the display effect; the height of each first protrusion 2 should not be too small, otherwise it will not be able to effectively prevent foreign objects from contacting each second protrusion 3.

[0043] In some optional embodiments, the height H2 of each second protrusion 3 is greater than or equal to 200 nm and less than or equal to 1000 nm. The height of the second protrusion 3 refers to the distance between one end of the second protrusion 3 away from the light-emitting surface of the display module and the other end of the second protrusion 3 close to the light-emitting surface of the display module. The height of each second protrusion 3 should not be too large, otherwise it will affect the display effect; the height of each second protrusion 3 should not be too small, otherwise it will not be effective in antibacterial.

[0044] In some optional embodiments, the maximum width dimension of the first protrusion 2 is greater than or equal to 500nm and less than or equal to 5μm; the minimum spacing between adjacent first protrusions 2 is greater than or equal to 100μm and less than or equal to 200μm. The maximum width dimension of the first protrusion 2 should not be too small, otherwise it cannot effectively protect the second protrusion 3, and the maximum width dimension of the first protrusion 2 should not be too large to prevent bacteria from attaching to the first protrusion 2 and multiplying. The minimum spacing between adjacent first protrusions 2 should not be too small, otherwise the bacteria cannot fall onto the second protrusion 3 and be killed, and the minimum spacing between adjacent first protrusions 2 should not be too large, otherwise the second protrusion 3 cannot be protected. The above-mentioned width dimension is also called line width, and the maximum width dimension refers to the largest width dimension in the height direction of the first protrusion. For example, Figure 1 As shown, if the first protrusion 2 is a column, and the width dimension D1 of the column in the height direction is equal everywhere, then the maximum width dimension is the width dimension D1 of the column at any height position. Figure 3 As shown, if the first protrusion 2 is a frustum, the width dimension of the frustum in the height direction decreases in the direction away from the light-emitting surface of the display module, then the maximum width dimension is the width dimension D11 of the frustum at the lowest position; the minimum width dimension is the width dimension D12 of the frustum at the highest position. Figure 4 As shown, if the first protrusion 2 is a cone, the width dimension of the cone in the height direction decreases in the direction away from the light emitting surface of the display module, and the maximum width dimension is the width dimension D11' of the cone at the lowest position.

[0045] In some optional embodiments, the maximum width dimension of the first end of the first protrusion 2 close to the light-emitting surface of the display module is greater than the maximum width dimension of the second end away from the light-emitting surface of the display module. Figure 1 and Figure 2 The column shown (i.e., the axial cross-section perpendicular to the light-emitting surface is rectangular), Figure 3 The frustum shown (i.e., the axial cross-section perpendicular to the light-emitting surface is a trapezoid) or Figure 4 The cone shown (ie the axial cross section perpendicular to the light emitting surface is a triangle), etc. In this way, the first protrusions 2 can also play a certain antibacterial and anti-fingerprint effect on the basis of acting as a barrier to prevent foreign objects from contacting the second protrusions.

[0046] In some optional embodiments, the maximum width dimension D3 of the second protrusion 3 is greater than or equal to 40nm and less than or equal to 100nm; the minimum interval between adjacent second protrusions D4 is greater than or equal to 40nm and less than or equal to 100nm. The maximum width dimension D3 of the second protrusion 3 should not be too small, otherwise it will increase the process difficulty, and should not be too large, otherwise it will not be able to effectively sterilize. In addition, under the premise that the process difficulty is not too great, the smaller the minimum interval D4 between adjacent second protrusions, the greater the arrangement density of the second protrusions 3, and the better the sterilization effect.

[0047] In some optional embodiments, such as Figure 2 As shown, the second protrusion 3 is a conical protrusion, and the tip 31 of the conical protrusion has an arc surface, and the radius of curvature of the arc surface is greater than or equal to 30nm and less than or equal to 50nm. The radius of curvature of the arc surface can achieve sharp microstructure antibacterial. Optionally, the shape of the orthographic projection contour of the conical protrusion on the light-emitting surface includes at least one of a circle, a square, a rectangle, a hexagon and a trapezoid, that is, the conical protrusion can be a cone, a triangular pyramid, a quadrangular pyramid, etc. Of course, in practical applications, the second protrusion can also be as follows Figure 1 The embodiments of the present invention have no particular restrictions on the structures of the column (i.e., a rectangular shape in the axial cross-section perpendicular to the light-emitting surface) or a frustum (i.e., a trapezoidal shape in the axial cross-section perpendicular to the light-emitting surface) shown, or a grid structure composed of multiple sheets (the width of the sheet is, for example, in the range of 30nm to 100nm), etc., where one end away from the light-emitting surface is a pointed end or an end face with a smaller width dimension, and the embodiments of the present invention have no particular restrictions on this.

[0048] In some optional embodiments, such as Figure 5 As shown, a plurality of first protrusions 2 are arranged into a first rectangular array, and the rows and columns of the first rectangular array are parallel to the two adjacent sides of the light-emitting surface of the display module, that is, parallel to the X direction and the Y direction respectively; a plurality of second protrusions 3 are arranged into a second rectangular array in the second region, and the rows and columns of the second rectangular array are parallel to the two adjacent sides of the light-emitting surface of the display module. By adopting the above arrangement, it can be matched with the display module to minimize the influence of the first protrusions 2 and the second protrusions 3 on the display effect, and even improve the display effect.

[0049] In some optional embodiments, in order to further improve the antibacterial effect, the surfaces of each first protrusion 2, each second protrusion 3, the intervals between adjacent first protrusions 2, and the intervals between adjacent second protrusions 3 are covered with an antibacterial layer. The antibacterial material used in the antibacterial layer is, for example, silver (Ag), or other metals such as copper (Cu), titanium (Ti), or metal oxides such as zinc oxide (ZnO), titanium oxide (TiO), and alloys.

[0050] In other optional embodiments, each first protrusion 2 and each second protrusion 3 can also be made of the above-mentioned antibacterial material. Taking the antibacterial material as silver as an example, the material of each first protrusion 2 and each second protrusion 3 itself is silver, which can also play a role in improving the antibacterial effect.

[0051] The following describes in detail a specific embodiment in which a plurality of first protrusions 2 and a plurality of second protrusions 3 are disposed on one side of the light emitting surface of the display module.

[0052] First embodiment

[0053] See also Figure 1 The protective cover plate includes a film material 1 that does not contain antibacterial material and covers the light-emitting surface of the display module. The film material 1 itself is formed with a plurality of first protrusions 2 and a plurality of second protrusions 3 on the side away from the light-emitting surface. The film material 1 covers the light-emitting surface of the display module. The display module includes, for example, a transparent cover plate (not shown in the figure). The surface of the transparent cover plate facing the light-emitting direction is the light-emitting surface. The transparent cover plate is, for example, a glass cover plate, a silicon cover plate, or a sapphire cover plate. The film material 1 covers the surface of the transparent cover plate facing the light-emitting direction.

[0054] The above-mentioned film material 1 is, for example, a flexible and transparent film material without antibacterial material, which is suitable for occasions where the antibacterial effect is not required, and can be used in various flexible or special display modules, such as flexible display modules that need to be curled, curved display modules, etc. The film material 1 is, for example, a transparent PET (polyethylene terephthalate) film layer, a flexible and transparent PI (polyimide) film material, etc. The above-mentioned film material 1 can also be a film material containing antibacterial material, that is, a film material doped with antibacterial material. The antibacterial material is, for example, silver (Ag), or other metals such as copper (Cu), titanium (Ti), etc., or metal oxides such as zinc oxide (ZnO), titanium oxide (TiO), etc., and alloys, etc., which are suitable for occasions where the antibacterial effect is required to be high, and can be used in various flexible or special display modules, such as flexible display modules that need to be curled, curved display modules, etc. In addition, a film material containing antibacterial and antiviral materials can also be used to achieve sterilization and antiviral effects. Antibacterial and antiviral materials are, for example, Ag, Cu, etc.

[0055] Second embodiment

[0056] The display panel provided in this embodiment is different from the above-mentioned first embodiment only in that the multiple first protrusions 2 and the multiple second protrusions 3 in this embodiment are directly formed on the light-emitting surface of the transparent cover plate of the display module. Specifically, in this embodiment, the display module includes a transparent cover plate, and the surface of the transparent cover plate facing the light-emitting direction is the above-mentioned light-emitting surface. The transparent cover plate is, for example, a glass cover plate, a silicon cover plate, or a sapphire cover plate. The transparent cover plate is used as a protective cover plate, and the transparent cover plate itself is formed with multiple first protrusions 2 and multiple second protrusions 3. The structure and function of the multiple first protrusions 2 and the multiple second protrusions 3 have been described in detail in the above-mentioned embodiment, and will not be repeated here.

[0057] As another technical solution, the embodiment of the present invention also provides a method for manufacturing a display panel, please refer to Figure 6 and Figure 7 , the method comprising:

[0058] S1. Provide a template 4 having a protrusion structure pattern, wherein the protrusion structure pattern comprises a plurality of first protrusions 2 arranged at intervals, and a plurality of second protrusions 3 for antibacterial function distributed in a second area outside a first area where each first protrusion 2 is located, wherein the height of each first protrusion 2 is greater than the height of each second protrusion 3;

[0059] S2, forming a glue material on the light emitting surface of the display module;

[0060] S3, using template 4, and replicating the raised structure pattern on the adhesive material by nanoimprinting.

[0061] The plurality of second protrusions 3 have antibacterial and anti-fingerprint effects. Furthermore, by making the height of each first protrusion 2 greater than the height of each second protrusion 3, each first protrusion 2 can act as a barrier to prevent foreign objects from contacting each second protrusion 3, thereby protecting each second protrusion 3 and preventing each second protrusion 3 from being damaged by external factors such as user touch and friction with foreign objects, thereby ensuring the antibacterial effect and increasing the service life.

[0062] The above-mentioned multiple second protrusions 3 are sterilized by physical antibacterial methods targeting 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, and the scale of the above-mentioned multiple second protrusions 3 is usually hundreds of nanometers, with a minimum of tens of nanometers, 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, the super-hydrophobic surface 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 a surface with a sharp micro-nano structure, the bacteria themselves tend to extend, causing the cell wall to become thinner and the strength to decrease. The sharp microstructure will damage the bacteria and cause them to die. Based on the above principle, the embodiment of the present invention can achieve antibacterial and anti-fingerprint effects by using multiple second protrusions 3 to form a super-hydrophobic surface.

[0063] In some optional embodiments, in the above step S1, the method for making a template with a raised structure pattern includes: first, an electron beam direct writing (EBL) process or a photolithography process can be used to make a raised structure pattern on a first template. Taking the electron beam direct writing (EBL) process as an example, an electron beam glue is coated on the first template, and the first template is patterned to obtain a raised structure pattern on the first template. The first template is a silicon wafer or other substrate material that can be applied to electron beam exposure. Then, the raised structure pattern is copied on the second template by nanoimprinting, that is, a template with a raised structure pattern is obtained. The second template can be a hard template or a soft template.

[0064] Through the above steps S1 (copying the pattern on the second template by the first nanoimprinting) and S3 (copying the pattern on the adhesive by the second nanoimprinting), a pattern identical to the protrusion structure pattern on the first template can be formed on the adhesive.

[0065] In some optional embodiments, the method for making the above template includes:

[0066] S11, providing a sub-template having a convex structure pattern;

[0067] The size of the sub-template is smaller than the size of the template.

[0068] S12. Using a sub-template to form a template with a raised structure pattern by nanoimprinting and splicing.

[0069] In the above step S11, first, Figure 7 As shown in Figures (1) to (2) in FIG. 1 , a glue material is coated on a first sub-template 51 of a small size, and a convex structure pattern is made on the glue material by using an electron beam direct writing (EBL) process or a photolithography process; then, as shown in FIG. Figure 7 As shown in FIG. (3), the first sub-template 51 is patterned (eg, ICP etching process) using the convex structure pattern on the glue material to obtain a convex structure pattern 511 on the first sub-template 51. The first sub-template 51 is a silicon wafer or other substrate material applicable to electron beam exposure.

[0070] In the above step S12, if Figure 7 As shown in FIG. (4), the convex structure pattern 511 on the small-sized first sub-template 51 is copied onto a plurality of small-sized second sub-templates 51', that is, the same first sub-template 51 is used to perform nano-imprinting on a plurality of second sub-templates 51', and then the plurality of second sub-templates 51' are spliced ​​to form a large-sized first template 5, and the convex structure patterns 511' on the plurality of small-sized second sub-templates 51' are spliced ​​to form a large-sized convex structure pattern. Since the cost of the small-sized first sub-template 51 is relatively high, this method of using a small-sized sub-template to obtain a template with a large-sized convex structure pattern can reduce the manufacturing cost. Of course, the method of forming a large-sized convex structure pattern in the embodiment of the present invention is not limited to this. In practical applications, for example, the same first sub-template 51 can also be used to perform multiple nano-imprintings on a large-sized hard or soft template to form a large-sized convex structure pattern, which can also reduce the manufacturing cost.

[0071] Then, if Figure 8 As well as Fig. 9 As shown in Figures (1) to (2) of the drawings, the above-mentioned protrusion structure pattern (including multiple first protrusions 2 and multiple second protrusions 3) formed by the large-sized first template 5 is replicated on the second template 4 by nanoimprinting. The second template 4 can be a hard template or a soft template.

[0072] In the above step S2, if Fig. 9 As shown in FIGS. (3) to (4) of the drawings, a glue material 9 is formed on the light emitting surface of the display module (eg, the light emitting surface of the transparent cover plate 6).

[0073] In the above step S3, if Fig. 9 As shown in FIG. (5), the second template 4 is used to replicate the convex structure pattern on the adhesive material 9 by nanoimprinting, so as to form a convex structure pattern 11 on the adhesive material 9. It is easy to understand that the adhesive material 9 has a certain fluidity before curing, and forms a solid film material after curing (for example, the film material 1 covering the light-emitting surface of the display module in the above embodiment).

[0074] On this basis, in order to further improve the antibacterial effect, the above step S3 further includes:

[0075] S4, such as Fig. 9 As shown in FIG. (6) , the surfaces of each first protrusion 2 , each second protrusion 3 , the intervals between adjacent first protrusions 2 , and the intervals between adjacent second protrusions 3 in the protrusion structure pattern 11 are all covered with the antibacterial layer 7 .

[0076] The above-mentioned method for making the antibacterial layer 7 includes but is not limited to evaporation, spraying, spin coating, etc.

[0077] In some other optional embodiments, in order to further improve the antibacterial effect, in the above step S2, as Fig.10 As shown in Figures (3) to (4) of FIG. 1 , the adhesive material 9' formed on the light-emitting surface of the display module is made of the above-mentioned antibacterial material, and then a layer of masking adhesive material 8 is coated on the adhesive material 9'. In the above-mentioned step S3, as Fig.10 As shown in FIG. 5 , firstly, a template (i.e., template 4) is used to replicate the protruding structure pattern on the masking material 8 by nanoimprinting; then, as shown in FIG. Fig.10 As shown in FIG. (6), the patterned mask adhesive 8 is used as a mask to etch the adhesive 9' made of antibacterial material, and finally a raised structure pattern 11 (including multiple first protrusions 2 and multiple second protrusions 3) is formed on the adhesive 9', which can also play a role in improving the antibacterial effect.

[0078] In summary, the display panel provided by the embodiment of the present invention has multiple second protrusions 3 with antibacterial and anti-fingerprint effects. Moreover, by making the height H1 of each first protrusion 2 greater than the height H2 of each second protrusion 3, each first protrusion 2 can act as a barrier to prevent foreign objects from contacting each second protrusion 3, thereby protecting each second protrusion 3 and preventing each second protrusion 3 from being damaged by external factors such as user touch and friction with foreign objects, thereby ensuring the antibacterial effect and increasing the service life.

[0079] It is 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 skilled 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 includes a plurality of first protrusions arranged at intervals, and a plurality of second protrusions for antibacterial function distributed in a second area outside a first area where each of the first protrusions is located, wherein a height of each of the first protrusions is greater than a height of each of the second protrusions.

2. The display panel according to claim 1, characterized in that: The height of each of the first protrusions is greater than or equal to 1 μm and less than or equal to 5 μm.

3. The display panel according to claim 1 or 2, characterized in that: The height of each of the second protrusions is greater than or equal to 200 nm and less than or equal to 1000 nm.

4. The display panel according to claim 1, characterized in that: The maximum width of the first protrusions is greater than or equal to 500 nm and less than or equal to 5 μm; the minimum interval between adjacent first protrusions is greater than or equal to 100 μm and less than or equal to 200 μm.

5. The display panel according to claim 1, characterized in that: The maximum width of the second protrusions is greater than or equal to 40 nm and less than or equal to 100 nm; the minimum interval between adjacent second protrusions is greater than or equal to 40 nm and less than or equal to 100 nm.

6. The display panel according to claim 1, characterized in that: The plurality of first protrusions are arranged in a first rectangular array, and the rows and columns of the first rectangular array are respectively parallel to two adjacent side edges of the light emitting surface of the display module; A plurality of the second protrusions are arranged in a second rectangular array in the second region, and the rows and columns of the second rectangular array are respectively parallel to two adjacent side edges of the light emitting surface of the display module.

7. The display panel according to claim 1, characterized in that: The maximum width dimension of the first protrusion at a first end close to the light emitting surface of the display module is greater than the maximum width dimension of the second end far from the light emitting surface of the display module.

8. The display panel according to any one of claims 1 to 7, characterized in that: The surfaces of each of the first protrusions, each of the second protrusions, the intervals between adjacent first protrusions, and the intervals between adjacent second protrusions are all covered with an antibacterial layer.

9. The display panel according to any one of claims 1 to 7, characterized in that: Each of the first protrusions and each of the second protrusions are made of antibacterial material.

10. The display panel according to any one of claims 1 to 7, characterized in that: The second protrusion is a cone-shaped protrusion, the tip of the cone-shaped protrusion has an arc surface, and the curvature radius of the arc surface is greater than or equal to 30 nm and less than or equal to 50 nm.

11. The display panel according to any one of claims 1 to 7, characterized in that: 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 the first protrusions and a plurality of the second protrusions on a side away from the light-emitting surface.

12. The display panel according to any one of claims 1 to 7, characterized in that: 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 first protrusions and a plurality of the second protrusions.

13. A method for manufacturing a display panel, characterized in that: include: A template having a protrusion structure pattern is provided, wherein the protrusion structure pattern comprises a plurality of first protrusions arranged at intervals, and a plurality of second protrusions for antibacterial function distributed in a second area outside a first area where each of the first protrusions is located, wherein the height of each of the first protrusions is greater than the height of each of the second protrusions; forming a glue material on a light emitting surface of the display module; The template is used to replicate the protruding structure pattern on the adhesive material by nano-imprinting.

14. The method for manufacturing a display panel according to claim 13, characterized in that: The method for making the template comprises: Providing a sub-template having a convex structure pattern, wherein the size of the sub-template is smaller than the size of the template; The sub-template is used to form the template with the raised structure pattern by nano-imprinting and splicing.

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