Transparent panel with micro-nano texture structure

Abstract

The utility model discloses a transparent panel with a micro-nano texture structure, and the transparent panel comprises a transparent substrate which comprises a first surface and a second surface opposite to the first surface; the transparent substrate is provided with a first surface and a second surface, the micro-nano texture structure layer is composed of a plurality of micro-nano texture structures, the micro-nano texture structures are located on the first surface of the transparent substrate, the micro-nano texture structures are in a grid shape, and the micro-nano texture structures are defined by N side lines; wherein the micro-nano texture structure is a concave structure, the side line of the micro-nano texture structure is an arc line, and the arc surface of the arc line faces the second surface of the transparent substrate. According to the novel micro-nano texture structure provided by the invention, the side line of the structure is the arc line, and the arc surface of the arc line faces the second surface of the glass substrate, so that flash points appearing on the transparent panel can be effectively reduced by adjusting the randomness of the grid, the definition is improved, and the haze, glossiness and roughness are controllable.

Description

Technical Field

[0001] This application relates to the field of display technology, and particularly to a transparent panel with a micro-nano texture structure. Background Art

[0002] In recent years, people have had higher and higher pursuits for displays, and major brand manufacturers have successively launched high-brightness display screens to meet the needs of users.

[0003] The first Mini LED screen iPad Pro released by Apple in 2021 has a full-screen brightness and an HDR peak brightness of 1000 nit and 1600 nit respectively. If we go further, we will find that the full-screen brightness and the HDR peak brightness of the LCD screen of the Apple XDR display priced at 40,000 yuan are both 1000 nit and 1600 nit; after the launch of this display by Apple, it has been followed by various brand manufacturers, and they have all started research and development on their own displays. The mainstream technical solution is to set a micro-nano texture structure on the glass panel of the display to prevent or reduce light reflection. However, more or less technical problems such as flash points and insufficient clarity will occur during the use of the glass panel. Moreover, most of the existing processes use sandblasting to form a micro-nano texture structure on the glass surface, which will result in uncontrollable sizes of the formed micro-nano texture structures, and this is also the main reason for the occurrence of the above technical problems.

[0004] In summary, it is necessary to provide a new design structure to solve the technical problems encountered in the prior art. Utility Model Content

[0005] Based on this, it is necessary to provide a transparent panel with a micro-nano texture structure to solve the above technical problems.

[0006] One technical solution of this application is:

[0007] A transparent panel with a micro-nano texture structure, characterized in that it includes:

[0008] A transparent substrate, the transparent substrate includes a first surface and a second surface opposite to each other;

[0009] A micro-nano texture structure layer, the micro-nano texture structure layer is composed of a number of micro-nano texture structures, the micro-nano texture structures are located on the first surface of the transparent substrate, the micro-nano texture structures are in a grid shape, the micro-nano texture structures are surrounded by N side lines, and N is greater than or equal to 3;

[0010] Wherein, the micro-nano texture structure is a concave structure, the side lines of the micro-nano texture structure are arcs, and the arc surfaces of the arcs face the second surface of the transparent substrate.

[0011] In one embodiment, the aperture of the micro-nano texture structure is a, where 10μm ≤ a ≤ 80μm, and the depth of the micro-nano texture structure is b, and 0.01a ≤ b ≤ 0.125a.

[0012] In one embodiment, there is at least one group of two adjacent micro-nano texture structures with different aperture sizes, and the difference in aperture is not greater than 0.2*a.

[0013] In one embodiment, there are at least any two micro-nano texture structures with different aperture sizes, and the difference in aperture is not greater than 0.2*a.

[0014] In one embodiment, the straight-line distance between the two endpoints of the arc is c, the distance from the top of the arc to this straight line is d, and 0 < d ≤ c / 5, and 5μm ≤ c ≤ 40μm.

[0015] In one embodiment, the vertical distance from the top of the concave structure to the first surface of the transparent substrate is greater than the vertical distance from the top of the arc to the first surface of the transparent substrate.

[0016] In one embodiment, the grid formed by the micro-nano texture structure is a square, rectangle, rhombus, regular pentagon, or regular hexagon.

[0017] In one embodiment, the transparent substrate is a glass substrate, and the micro-nano texture structure is directly formed on the first surface of the glass substrate.

[0018] In one embodiment, the transparent substrate includes a flexible carrier substrate and a polymer layer. The polymer layer is disposed on the surface of the flexible carrier substrate, and the micro-nano texture structure is disposed on the side of the polymer layer away from the flexible carrier substrate.

[0019] In one embodiment, the grid formed by the micro-nano texture structure is a random grid; the entire surface of the transparent panel has a random grid with a randomness S, and the range of the randomness S is 0 ≤ S ≤ 0.4.

[0020] In one embodiment, the haze value of the transparent panel is 20 - 60%.

[0021] Advantages of the present application: The present application provides a new micro-nano texture structure. The side edges of the structure are arcs, and the arc surface of the arc faces the second surface of the transparent substrate, which reduces or eliminates the blank areas formed between structures. Additionally, by artificially controlling the randomness of the grid during design, the flash points that appear on the transparent panel can be effectively reduced, the clarity is improved, and the haze, gloss, and roughness are controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic plan view of a planar structure of a micro-nano texture structure transparent panel of the present application;

[0023] Figure 2 Schematic cross-sectional view of a micro-nano texture structure transparent panel of the present application;

[0024] Figure 3 is Figure 1 Schematic plan view of a single micro-nano texture structure in area A in

[0025] Figure 4 Schematic cross-sectional view of a single micro-nano texture structure of the present application;

[0026] Figure 5 Schematic cross-sectional view of the side line of a single micro-nano texture structure of the present application;

[0027] Figure 6 Another schematic cross-sectional view of a micro-nano texture structure transparent panel of the present application;

[0028] Figure 7 Another schematic plan view of a micro-nano texture structure transparent panel of the present application;

[0029] Figure 8 Another schematic plan view of a micro-nano texture structure transparent panel of the present application;

[0030] Figure 9 Schematic view of the structure of a micro-nano texture structure transparent panel of the present application under a microscope. Detailed implementation mode

[0031] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described below. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] A micro-nano texture structure transparent panel, the transparent panel can mainly be used in the display field, the transparent panel can well improve the overall brightness of the display, and is characterized in that the transparent panel includes:

[0034] A transparent substrate, the transparent substrate including a first surface and a second surface opposite thereto; for the transparent substrate, high-transparency glass can be selected as the substrate, or glass with high transmittance and relatively high hardness can be selected as the substrate, so that both light loss can be reduced and the display can be effectively protected. Alternatively, the transparent substrate includes a flexible carrier substrate and a polymer layer, the polymer layer being disposed on the surface of the flexible carrier substrate, and the micro-nano texture structure being disposed on the side of the polymer layer away from the flexible carrier substrate; for example, the flexible carrier substrate is made of materials such as PI, PET, PC, etc., the polymer is a UV glue, and the UV glue is a hard UV with a pencil hardness of not less than 2H.

[0035] A micro-nano texture structure layer, the micro-nano texture structure layer being composed of a plurality of micro-nano texture structures, the micro-nano texture structures being located on the first surface of the transparent substrate, the micro-nano texture structures being in a grid shape, the micro-nano texture structures being surrounded by N side lines, and N being greater than or equal to 3. Generally, the number of side lengths of the micro-nano texture structures is greater than 4, and hexagons or random grids can also be used; wherein, the micro-nano texture structures are concave structures, the side lines of the micro-nano texture structures are arcs, and the arc surfaces of the arcs face the second surface of the transparent substrate; the micro-nano texture structures are directly formed on the first surface of the transparent substrate, and the morphology of the concave structures of the micro-nano texture structures is similar to the morphology of a "volcano crater". Taking a hexagon as an example, the morphology of a single micro-nano texture structure is that the middle area is concave towards the inside of the transparent substrate, and the six side lines of the hexagon are also concave towards the inside of the transparent substrate, or as described above, concave towards the second surface of the transparent substrate.

[0036] In one embodiment, the vertical distance from the top or bottom of the concave structure to the first surface of the transparent substrate is greater than the vertical distance from the top or bottom of the arc to the first surface of the transparent substrate; here, the "top" refers to when the shape of the structure is an arc surface, at this time the structure has an arc surface and a plane, and the point on the arc surface with the maximum vertical distance to the plane is called the end point. Taking this application as an example, taking the first surface of the transparent substrate as the plane, the concave structure as the arc surface or the arc of the side line, at this time the maximum vertical distance from the arc surface or the arc to the first surface can be called the top of the arc surface or the arc, or it can also be said to be the maximum depth of the concave structure or the maximum depth of the arc. Of course, the top or bottom of the concave structure can be a plane, and the side wall is an arc.

[0037] The preparation process of the micro-nano texture structure is mainly formed on the surface of a glass substrate by etching. The process steps include: first, cleaning the glass substrate without the structure, and then coating a photoresist on the surface of the glass substrate; then forming a pattern on the surface of the photoresist through equipment, and finally forming the micro-nano texture structure by etching; it should be noted that during the etching process, it is necessary to ensure that there is no platform area between the micro-nano texture structures as much as possible, because once there is a platform area, it will affect the light, thus affecting the user's visual experience; especially at the intersection of the micro-nano texture structures, it is very easy to form an intersection platform due to insufficient etching, so it is necessary to control during the etching process to make the platform at the intersection very small or completely eliminate the platform.

[0038] When the transparent substrate includes a flexible carrier substrate and a polymer layer, the micro-nano texture structure can be formed by imprinting on the surface of the polymer layer through a mold, which has a lower preparation cost and is suitable for roll-to-roll production.

[0039] In one embodiment, the aperture of the micro-nano texture structure is a, where 10μm ≤ a ≤ 80μm, the depth of the micro-nano texture structure is b, and 0.01a ≤ b ≤ 0.125a. In one embodiment, there is at least one group of two adjacent micro-nano texture structures with different aperture sizes, and the difference in aperture is not greater than 0.2*a. In one embodiment, there are at least any two micro-nano texture structures with different aperture sizes, and the difference in aperture is not greater than 0.2*a. In one embodiment, the straight-line distance between the two endpoints of the arc is c, the distance from the top of the arc to this straight line is d, and 0 < d ≤ c / 5, and 5μm ≤ c ≤ 40μm. Here, the aperture of the micro-nano texture structure generally refers to the diameter of the largest circumscribed circle of the micro-nano texture structure.

[0040] In one embodiment, the grid formed by the micro-nano texture structure is square, rectangular, rhombic, regular pentagonal, or regular hexagonal. In one embodiment, the grid formed by the micro-nano texture structure is a random grid. In one embodiment, the random grid on the entire surface of the transparent panel has a randomness S, and the range of the randomness S is 0 ≤ S ≤ 0.4; the randomness refers to the random variation of the positions of the grid vertices from the regular pattern, that is, the positions of the vertices of the regular grid are randomly changed, and the ratio of the random change distance to the side length is less than 0.4; for example, taking a regular pentagon as an example, the regular pentagon has 5 vertices, and a random variation is set at each vertex, so that the formed figure becomes a general pentagon instead of a regular pentagon, and this variation is called randomness. Moreover, in the present application, the grid edges are designed as arcs. By combining with controlling the randomness of the grid, the flash points that appear on the transparent panel can be effectively reduced, the clarity is improved, and the haze, gloss, and roughness can be controlled.

[0041] In one embodiment, the haze value of the transparent panel is 20-60%, and the transparent panel here refers to a transparent substrate with a micro-nano texture structure; as described above, for the transparent substrate, a material with a suitable haze value still needs to be selected. Generally, the haze value of the transparent substrate is not greater than 5%.

[0042] As Figure 1 and Figure 2 shown, a transparent panel 100 with a micro-nano texture structure, the transparent panel 100 includes a glass substrate 10 and a micro-nano texture structure layer 20. The glass substrate 10 includes a first surface and a second surface opposite to each other. The micro-nano texture structure layer 20 is directly formed on the first surface of the glass substrate 10. From Figure 2 it can be seen that the transparent panel 100 is a single-layer structure; of course, in other application scenarios, a polymer layer can also be provided on the first surface of the glass substrate 10, and the micro-nano texture structure layer 20 is directly formed on the side of the polymer layer away from the glass substrate.

[0043] As Figures 3 to 5 shown, where Figure 3 is Figure 1 the enlarged view of area A in Figure 3 The micro-nano texture structure layer 20 is composed of several micro-nano texture structures 21. Figure 1 shows a schematic diagram of a single micro-nano texture structure 21 in area A. Combining Figure 1 it can be seen that Figure 3It can be seen that the maximum circumscribed circle diameter of the micro-nano texture structure 21 is a, or in other words, the aperture of the micro-nano texture structure 21 is a, and the side length of the micro-nano texture structure 21 is c, where 10μm ≤ a ≤ 80μm and 5μm ≤ c ≤ 40μm; combined with Figure 4 As shown, the aperture of the micro-nano texture structure 21 is a, and the depth of the micro-nano texture structure 21 is b, where 0.01a ≤ b ≤ 0.125a, so the range of b is 100nm ≤ b ≤ 5μm; in one embodiment, at least one group of two adjacent micro-nano texture structures have different aperture sizes, and the difference in aperture is not greater than 0.2*a, or, in one embodiment, at least any two micro-nano texture structures have different aperture sizes, and the difference in aperture is not greater than 0.2*a. As Figure 5 shown, in one embodiment, the straight-line distance between the two endpoints of the arc (or the side line 211) is c, the distance from the top of the arc to this straight line is d, and 0 < d ≤ c / 5, where generally the range of c is 5μm ≤ c ≤ 40μm; taking Figure 3 as an example, the length of the side line 211 is 40 microns, and the length c of the side line 211 can be set according to the actual situation. Here, the aperture of the micro-nano texture structure generally refers to the diameter of the maximum circumscribed circle of the micro-nano texture structure. Of course, the cross-section of the concave structure 210 can also be a combination of a straight line and an arc, that is, the bottom of the concave structure is a plane and the side wall is an arc.

[0044] As Figure 6 shown, a cross-sectional view of another transparent panel is given. The transparent substrate of the transparent panel includes a flexible carrier substrate 11 and a polymer layer 12. Among them, the flexible carrier substrate 11 is PI, and the polymer layer 12 is UV glue. A micro-nano texture structure is imprinted on the surface of the UV glue to form a micro-nano texture structure layer 20. Among them, the pencil hardness of the formed micro-nano texture layer is not less than 2H, so generally a glue with a relatively high hardness is used for the UV glue here; a filling structure can also be set on the surface of the micro-nano texture structure layer, and the refractive index of the transparent material used for this filling structure is lower than the refractive index of the polymer layer.

[0045] As Figure 7 、 Figure 8 shown, a cross-sectional view of another structure of the transparent panel is given; as Figure 7 shown, another transparent panel 101, the transparent panel 101 includes a micro-nano texture structure layer 30, the micro-nano texture structure layer 30 is composed of a number of micro-nano texture structures, and a number of the micro-nano texture structures form a random grid; as Figure 8As shown, another transparent panel 102 is provided. The transparent panel 102 includes a micro-nano texture structure layer 40, which is composed of a number of micro-nano texture structures. The number of the micro-nano texture structures forms a random grid, and the randomness of the random grid is 30%. The randomness of the random grid can be set according to different effects.

[0046] As Figure 9 shown, a three-dimensional topographic picture of the transparent panel in kind under a microscope is given. By irradiating the side of the transparent panel with the micro-nano texture structure through the microscope, the three-dimensional topography of the micro-nano texture structure can be seen. It can be clearly seen from the figure that the topography of the micro-nano texture structure is in the shape of a "crater", and the aperture sizes of the micro-nano texture structures are also different.

[0047] A new micro-nano texture structure provided by the present application has an arc-shaped side line. The arc surface of the arc faces the second surface of the glass substrate. By controlling the randomness of the random grid, the flash points that appear on the transparent panel can be effectively reduced, the clarity can be improved, and the haze, gloss and roughness can be controlled.

[0048] To make the above objects, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application are described in detail above with reference to the accompanying drawings. Many specific details are set forth in the above description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described above. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed above. Moreover, the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0049] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A micro-nano texture structure transparent panel, characterized in that: include: A transparent substrate, the transparent substrate comprising a first surface and an opposite second surface; A micro-nano texture structure layer, wherein the micro-nano texture structure layer is composed of a plurality of micro-nano texture structures, the micro-nano texture structures are located on the first surface of the transparent substrate, the micro-nano texture structures are in a grid shape, and the micro-nano texture structures are surrounded by N edges, and the N is greater than or equal to 3; Wherein, the micro-nano texture structure is a concave structure, the edge line of the micro-nano texture structure is an arc line, and the arc surface of the arc line faces the second surface of the transparent substrate.

2. The micro-nano texture structure transparent panel according to claim 1, characterized in that: The pore size of the micro-nano texture structure is a, wherein 10 μm≤a≤80 μm, and the depth of the micro-nano texture structure is b, wherein 0.01a≤b≤0.125a.

3. The micro-nano texture structure transparent panel according to claim 2, characterized in that: There is at least one group of two adjacent micro-nano texture structures with different pore sizes, and the difference between the pore sizes is no more than 0.2*a.

4. The micro-nano texture structure transparent panel according to claim 2, characterized in that: At least any two of the micro-nano texture structures have different pore sizes, and the difference between the pore sizes is no more than 0.2*a.

5. The micro-nano texture structure transparent panel according to claim 1, characterized in that: The straight-line distance between the two end points of the arc surface is c, the distance from the top of the arc line to the straight line is d, and 0<d≤c / 5, and 5μm≤c≤40μm.

6. The micro-nano texture structure transparent panel according to claim 1, characterized in that: A vertical distance from the bottom of the recessed structure to the first surface of the transparent substrate is greater than a vertical distance from the bottom of the arc line to the first surface of the transparent substrate.

7. A transparent panel with a micro-nano texture structure according to any one of claims 1 to 6, characterized in that: The transparent substrate is a glass substrate, and the micro-nano texture structure is directly formed on the first surface of the glass substrate.

8. A micro-nano texture structure transparent panel according to any one of claims 1 to 6, characterized in that: The transparent substrate comprises a flexible carrier substrate and a polymer layer. The polymer layer is arranged on the surface of the flexible carrier substrate, and the micro-nano texture structure is arranged on a side of the polymer layer away from the flexible carrier substrate.

9. The micro-nano texture structure transparent panel according to claim 1, characterized in that: The grid formed by the micro-nano texture structure is a random grid; the random grid of the entire surface of the transparent panel has a random degree S, and the range of the random degree S is 0≤S≤0.

4.

10. The micro-nano texture structure transparent panel according to claim 1, characterized in that: The haze value of the transparent panel is 20-60%.

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