Textured structure, cover plate, mobile terminal, and method for fabricating the cover plate

Abstract

A textured structure (100), a cover plate, a mobile terminal, and a method for making a cover plate. The textured structure (100) includes a substrate (10) and a plurality of groups of gratings (20) disposed on one side of the substrate (10). The plurality of groups of gratings (20) are arranged in a cross pattern on a surface of the substrate (10), each group of gratings (20) including a plurality of grating units (21) arranged side by side and extending in the same direction, each grating unit (21) configured to have a grating surface (30) that is inclined with respect to the substrate (10).

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims priority to Chinese Patent Application No. 202210347758.7, filed on April 1, 2022, and entitled “Texture Structure, Cover Plate, Mobile Terminal and Cover Plate Preparation Method,” which is incorporated herein by reference in its entirety.

[0002] The present disclosure relates to the field of optical technology, and in particular to a textured structure, a cover plate, a mobile terminal, and a method for making the cover plate. [Background technology]

[0003] At present, in order to improve the appearance of various products, various light and shadow effects are usually designed on the surface of the product. For example, in the related art, the effect of the decorative texture of a mobile phone is mainly planar light and shadow, and the effect of changing light and shadow is reflected by the change of color and the flow of light and shadow.

[0004] The color change of the mobile phone decorative texture is mainly realized by coating. After coating, only the same color or simple gradient color can be realized, but it is a flat color when viewed from different angles, and the flow of light and shadow is mainly expressed by a single grating. The flow of light and shadow has no sense of fluctuation at different angles, and also shows a flat two-dimensional light and shadow. Summary of the Invention [Problem to be solved by the invention]

[0005] In consideration of this, the present disclosure provides a textured structure, a cover plate, a mobile terminal, and a method for fabricating the cover plate, the textured structure being capable of realizing the light and shadow effect of a three-dimensional undulating closed sand dune. [Means for solving the problem]

[0006] The present disclosure relates to A substrate; a plurality of groups of gratings disposed on one side of a substrate, the plurality of groups of gratings being arranged in a cross pattern on a surface of the substrate, each group of gratings in the plurality of groups comprising a plurality of grating units arranged side by side and extending in the same direction, each of the plurality of grating units being configured to have a grating surface that is tilted with respect to the substrate; The present invention provides a texture structure comprising:

[0007] According to one embodiment of the present application, groups of gratings are configured to intersect such that the reflective surface of the textured structure exhibits a trend of change in any direction.

[0008] According to one embodiment of the present application, the plurality of gratings includes curved gratings extending in a curved manner and / or linear gratings extending in a linear manner.

[0009] According to one embodiment of the present application, the plurality of groups of gratings includes at least two groups of curved gratings extending in a curved manner.

[0010] According to one embodiment of the present application, the multiple groups of gratings include two groups of gratings, at least one of the two groups of gratings is a linear grating extending in a straight line, and the inclinations of the grating surfaces of the linear grating are different in the extension direction.

[0011] According to one embodiment of the present application, a cross section perpendicular to the extension direction of the grating is configured in a triangular or arc shape.

[0012] According to one embodiment of the present application, the tangent value of the angle between the grating surface and the surface of the substrate is 1:150-20:1.

[0013] According to one embodiment of the present application, the tangent value of the angle between the grating surfaces of at least one set of gratings and the surface of the substrate is between 2:15 and 20:1, and / or the tangent value of the angle between the grating surfaces of at least one set of gratings and the surface of the substrate is between 1:150 and 2:15.

[0014] According to one embodiment of the present application, an area where the orthogonal projections of the gratings of the multiple groups on the substrate overlap is configured as an overlap area, and a structure of the gratings corresponding to the overlap area is configured as an intersection, the overlap area has multiple position points A(x,y), the heights corresponding to the intersecting gratings of the multiple groups at each position point A(x,y) are h1, h2, ..., hn respectively, and the height H corresponding to the intersection at the corresponding position point A(x,y) is (h1+h2+...+hn) / n, or the height H corresponding to the intersection at the corresponding position point A(x,y) is the smallest of h1, h2, ..., hn, where n is the multiple gratings intersecting in the overlap area.

[0015] According to one embodiment of the present application, the intersection is configured as a pyramid or prism.

[0016] According to one embodiment of the present application, the texture structure has multiple intersections, and the shapes of the multiple intersections are different.

[0017] According to a second aspect of the present disclosure, there is provided a cover plate including a textured structure provided by the present disclosure.

[0018] According to a third aspect of the present disclosure, there is provided a mobile terminal including a cover provided by the present disclosure.

[0019] According to a fourth aspect of the present disclosure, there is provided a method for making a cover plate, the cover plate including a textured structure provided by the present disclosure, the method comprising: Photoresist is uniformly applied onto a glass plate, and photolithography exposure is performed on the glass plate with a predefined texture. Transferring predefined photolithographic textures onto a substrate Attach the board to the cover Includes.

[0020] In one embodiment, the substrate includes one of a PC sheet, a PET sheet, and a PC / PMMA composite sheet.

[0021] According to a fifth aspect of the present disclosure, there is provided a method for fabricating a cover plate, the cover plate comprising a glass plate and a texture structure provided by the present disclosure, the glass plate being configured as a substrate, the fabrication method comprising the steps of: Photoresist is applied to a glass plate, exposed and developed to create a predefined texture. The glass plate is placed into a chemical solution for etching. Includes.

[0022] With the above technical solution, multiple groups of gratings are arranged at the intersection, so that the areas where multiple groups of textures intersect can share the intersecting gratings, so that the whole texture structure has a closed and fused light and shadow effect. In addition, the grating units of each group of gratings have an inclined grating surface, which can realize a three-dimensional undulating feeling. Combined with the closed light and shadow effect, the whole texture structure can realize the closed sand dune effect, and therefore have a good visual effect.

[0023] Other features and advantages of the present disclosure are detailed in the detailed description that follows.

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of this specification. They are used to explain the present disclosure together with the following specific embodiments, but are not intended to be limiting of the present disclosure. [Brief description of the drawings]

[0025] [Figure 1] FIG. 2 is a schematic diagram of a texture structure of a combination of two sets of gratings provided by an exemplary embodiment of the present disclosure. [Diagram 2] 2 is a trend chart of light and shadow in the embodiment of FIG. 1. [Figure 3a] FIG. 2 is a schematic diagram of the refraction of light when the height of the grating surface is changed. [Figure 3b] FIG. 2 is a schematic diagram of the refraction of light as the width of a grating surface is changed. [Figure 4] FIG. 2 is a schematic diagram of a texture structure of a combination of two sets of gratings provided by an exemplary embodiment of the present disclosure. [Diagram 5] FIG. 5 is a schematic diagram of an intersection of texture structures corresponding to the embodiment of FIG. 4. [Figure 6a] FIG. 5 is a schematic diagram of the effect after cutting the textured structure on the right side of FIG. 4. [Figure 6b] FIG. 5 is a schematic diagram of the effect after detaching the texture structure on the right side of FIG. 4. [Figure 6c] FIG. 6b is a schematic diagram of the effect after cutting the textured structure of FIG. 6b. [Figure 7] FIG. 2 is a schematic diagram of a texture structure of a combination of two sets of gratings provided by an exemplary embodiment of the present disclosure. [Figure 8] FIG. 8 is a schematic diagram of an intersection of texture structures corresponding to the embodiment of FIG. 7. [Figure 9a] FIG. 8 is a schematic diagram of the effect after cutting the textured structure on the right side of FIG. 7. [Figure 9b] FIG. 8 is a schematic diagram of the effect after detaching the texture structure on the right side of FIG. 7. [Figure 9c]FIG. 9b is a schematic diagram of the effect after cutting the textured structure of FIG. 9b. [Figure 10] FIG. 2 is a schematic diagram of a texture structure of a combination of two sets of gratings provided by an exemplary embodiment of the present disclosure. [Figure 11] FIG. 11 is a partially enlarged view A of FIG. [Figure 12] FIG. 12 is a three-dimensional structural diagram corresponding to the diagram in FIG. [Figure 13] FIG. 13 is a cross-sectional view of the intersection in FIG. 12. [Figure 14] FIG. 2 is a schematic diagram of a texture structure of a combination of two sets of gratings provided by an exemplary embodiment of the present disclosure. [Figure 15] FIG. 15 is a partially enlarged view B of FIG. [Figure 16] FIG. 15 is a three-dimensional structural diagram corresponding to the diagram in FIG. 14. [Figure 17] FIG. 2 is a schematic structural diagram of a first grating provided by an exemplary embodiment of the present disclosure; [Figure 18a] 18 is an embodiment of cross-sectional view A of the first grating of FIG. 17. [Figure 18b] 18 is another embodiment of cross-sectional view A of the first grating of FIG. 17. [Figure 19a] 18 is an embodiment of cross-sectional view B of the first grating of FIG. 17. [Figure 19b] 18 is another embodiment of cross-sectional view B of the first grating of FIG. 17. [Figure 20] FIG. 2 is a schematic structural diagram of a second grating provided by an exemplary embodiment of the present disclosure. [Figure 21a] 21 is an embodiment of cross-section C of the second grating of FIG. 20. [Figure 21b] 21 is another embodiment of cross-section C of the second grating of FIG. 20. [Figure 22a] FIG. 21 is an embodiment of cross-sectional view D of the second grating of FIG. 20. [Figure 22b] 21 is another embodiment of cross-section D of the second grating of FIG. 20. [Figure 23a]FIG. 2 is a first embodiment of a schematic bottom view of a grating unit provided by an exemplary embodiment of the present disclosure. [Figure 23b] FIG. 13 is a second embodiment of a schematic bottom view of a grating unit provided by an exemplary embodiment of the present disclosure. [Figure 23c] FIG. 13 is a third embodiment of a schematic bottom view of a grating unit provided by an exemplary embodiment of the present disclosure. [Figure 23d] FIG. 13 is a fourth embodiment of a schematic bottom view of a grating unit provided by an exemplary embodiment of the present disclosure. [Figure 24a] 1 is a first embodiment of a grating extension direction provided by an exemplary embodiment of the present disclosure. [Figure 24b] 13 is a second embodiment of a grating extension direction provided by an exemplary embodiment of the present disclosure. [Figure 24c] 11 is a third embodiment of a grating extension direction provided by an exemplary embodiment of the present disclosure. [Fig. 24d] 11 is a fourth embodiment of a grating extension direction provided by an exemplary embodiment of the present disclosure. [Diagram 25] 1 is a schematic structural diagram of a cover provided by an exemplary embodiment of the present disclosure; [Figure 26] 1 is a flowchart of a method for making a cover plate according to an exemplary embodiment of the present disclosure. [Figure 27] 1 is a flowchart of a method for manufacturing a cover plate according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are used only to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0027] In this disclosure, unless otherwise specified, positional terms such as "upper", "lower", "top", and "bottom" generally refer to the orientation of the grating with the substrate as the bottom surface. For details, please refer to the drawing orientations in Figures 5 and 8. "Inner and outer" refer to the outer shapes of corresponding components. Terms used in this disclosure, such as "first, second", are used to distinguish one element from another and have no order or importance. Furthermore, when the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of the present disclosure, as detailed in the appended claims.

[0028] According to a first aspect of the present disclosure, a texture structure 100 is provided that can be provided on various products to improve aesthetics. For example, the texture structure 100 may be provided on a glass cover of a mobile phone to present a desired three-dimensional effect. Specifically, referring to FIG. 1 to FIG. 16, the texture structure 100 in the embodiment of the present disclosure includes a substrate 10 and a plurality of groups of gratings arranged on one side of the substrate 10. The plurality of groups of gratings 20 are arranged crosswise on the surface of the substrate 10. Here, the substrate 10 may be a PC (polycarbonate) sheet, a PET (polyethylene terephthalate) sheet, or a PC / PMMA (polymethyl methacrylate) composite plate, and the substrate 10 may also be a glass plate. The surface of the substrate 10 may be provided with two, three, four, or more groups of gratings arranged crosswise. In the embodiment of the present disclosure, for convenience of explanation, the following description will be given assuming that two groups of gratings 20 are arranged crosswise on the surface of the substrate 10. For example, the grating includes a first grating 201 and a second grating 202, but it should be understood that the number of grating groups in the embodiment of the present disclosure is not limited thereto. As shown in FIG. 10 and FIG. 14, the grating 20 in each group of the groups includes multiple grating units 21 arranged side by side and extending in the same direction. Adjacent grating units 21 may be spaced apart as shown, or may be in a tight configuration. Each of the grating units 21 in the embodiment of the present disclosure is configured to have a grating surface 30 inclined with respect to the substrate 10, and the grating surface 30 is used to refract light.

[0029] With the above technical solution, multiple groups of gratings 20 are arranged in an intersecting manner, and the textures presented by the intersecting gratings 20 may be shared in the intersecting areas, so that the whole texture structure 100 has a closed and integrated light and shadow effect. Furthermore, the grating units 21 of each group of gratings 20 have inclined grating surfaces 30, which can realize a three-dimensional undulating feeling. Combined with the closed light and shadow effect, the whole texture structure realizes a closed sand dune effect, thereby achieving a good visual effect.

[0030] In an embodiment of the present disclosure, the gratings 20 of the multiple groups are configured to intersect so that the reflective surface of the texture structure 100 changes in any direction. The tendency of the reflective surface change refers to the tendency of the reflective surface to change when the texture structure 100 is observed at any angle, rather than all of the reflective surfaces reflected by the texture structure 100 at this viewing angle being oriented in one direction. With reference to FIG. 1 and FIG. 2, the lines across the gratings 20 in FIG. 2 represent the trends of light and shadow. In FIG. 1, the texture structure 100 on the right side is obtained after combining the first grating 201 and the second grating 202. By combining the two sets of gratings 20, the texture structure 100 with a tendency of change can be obtained. For details, please refer to the light and shadow trend chart shown in FIG. 2. When the first grating 201 and the second grating 202 in FIG. 2 exist independently, they each reflect light depending on the opposite surface. After the first grating 201 and the second grating 202 are crossed and combined, the reflective surface changes, and the two groups of light sources reflected by the gratings 20 are merged, and the final texture structure 100 reflects the combined light and shadow effect. Through this combination of the gratings 20 in the embodiment of the present disclosure, a graduated light and shadow effect can be obtained, and the light and shadow presented by each grating 20 are combined at the crossing of the gratings 20, thereby producing a closed light and shadow effect.

[0031] According to an embodiment of the present disclosure, the tangent value of the angle between the grating surface 30 inclined relative to the substrate 10 and the surface of the substrate 10 may be 1:150 to 20:1. For example, when the height of the photolithography is 20 μm, that is, when the height of the grating surface 30 is 20 μm, the corresponding width of the grating surface 30 can be 1 μm to 3000 μm. This range of tangent values ​​can prevent the width of the grating surface 30 from being too wide and causing only a flat effect, and the width of the grating surface 30 is too narrow and cannot avoid exhibiting an inclined sand dune effect. For example, in some embodiments, in order to express the effect of the flow of light and shadow, the tangent value of the angle between the grating surface of at least one set of gratings 20 and the surface of the substrate 10 may be set to 2:15 to 20:1, for example, the height of the surface 30 is 20 μm and the corresponding width of the grating surface 30 is 1 μm to 150 μm. In some embodiments, in order to have both light and shadow flow and reflect the pattern of the arrangement of the gratings 20, the tangent value of the angle between the grating surface of at least one group of the gratings 20 and the surface of the substrate 10 may be set to 1:150-2:15, for example, the height of the grating surface 30 is 20 μm, and the corresponding width of the grating surface 30 is 150 μm-3000 μm. In the embodiment of the present disclosure, the arrangement of these gratings may be combined to obtain the desired texture effect. Among them, the spacing between the grating units 21 of each group of the gratings 20 may be set to 0-200 μm to ensure the texture expression effect by setting the height of the photolithography to 20 μm.

[0032] 17-19 show various shapes of the first grating 201, and FIG. 18a and FIG. 18b are cross-sectional views A of FIG. 17, which show the cross-section of the grating perpendicular to the extension direction, and FIG. 19a and FIG. 19b are cross-sectional views B of FIG. 17, which show the cross-section of the grating along the extension direction. Here, the apex position of the first grating 201 may always be located at the center line position of the grating 20. In FIG. 18a, the cross-section of the grating 20 may be configured as a triangle, and in FIG. 18b, the cross-section of the grating 20 is configured as an arc shape, i.e., the grating 20 has an upwardly arched structure. In Figure 19a, the height of the grating 20 may be kept constant in the extension direction, i.e. the inclination of the grating surfaces 30 of the grating 20 in the extension direction may be kept constant when the width of the grating 20 does not change, and in Figure 19b, the grating 20 may be configured in an undulating shape, i.e. the height of the grating 20 varies.

[0033] 20 to 22 show various shapes of the second grating 202. FIG. 21a and FIG. 21b are cross-sectional view C of FIG. 20, which shows a cross-section of the grating perpendicular to the extension direction. FIG. 22 is cross-sectional view D of FIG. 20, which shows a cross-section of the grating along the extension direction. Here, the apex position of the second grating 202 may gradually change in the extension direction of the grating 20. For example, on the left side of FIG. 20, the apex of the grating 20 is aligned with one side of the grating 20, and on the right side of FIG. 20, the apex of the grating 20 is aligned with the other side of the grating 20. Specifically, in FIG. 21a, the cross-section of the grating 20 may be configured as a triangle, which is configured as a right-angled triangle, and in FIG. 21b, the cross-section of the grating 20 is configured as a circular arc, i.e., the grating 20 has an upwardly arched structure. The apex of 20 is closer to the right side of the cross-section. In Figure 22a, similar to Figure 19a, the grating 20 can have a constant height in the extension direction, and in Figure 22b, similar to Figure 19b, the grating 20 can be configured in an undulating shape, i.e. the height of the grating 20 varies.

[0034] 23a to 23d show various possible bottom shapes of the grating 20, i.e., the shape of the contact surface between the grating 20 and the substrate 10. The bottom can be an ellipse as shown in FIG. 23a, or a rectangle as shown in FIG. 23b, or a special shape as shown in FIG. 23c and FIG. 23d. The present disclosure is not limited thereto, and various possible shapes are within the scope of protection of the embodiments of the present disclosure. Here, it should be noted that the structure of the first grating 201 and the second grating 202 is not limited to the above-mentioned bonding method. To form the grating 20, bottoms of various shapes may be bonded with a cross section along the extension direction and a cross section perpendicular to the extension direction. The embodiments are not limited to the above-mentioned embodiments and those shown in the drawings, and may be adjusted and bonded according to the actual desired effect.

[0035] In the embodiment of the present disclosure, the groups of gratings 20 may include curved gratings 203 that extend in a curved manner or linear gratings 204 that extend in a straight manner, or may include both at the same time. With reference to Fig. 24a to Fig. 24d, various possible extension directions of the gratings 20 are shown. Fig. 24a shows a linear grating 204 that extends in a straight manner, and Fig. 24b to Fig. 24d show a curved grating 203 that extends in a curved manner. In particular, the ground, Fig. 24b shows an S-shaped grating, Fig. 24c shows an M-shaped grating, and Fig. 24d shows an O-shaped grating, and the extension directions of the gratings 20 shown in Fig. 24a to Fig. 24d are merely illustrative and are not intended to limit the present disclosure.

[0036] In some embodiments, the multiple sets of gratings 20 may include at least two sets of curved gratings 203 extending in a curved line. The texture structure 100 obtained by the intersection of the two sets of curved gratings 203 can obtain the trend of change of the reflective surface in any direction, that is, obtain the effect of change of light and shadow, thereby achieving the visual effect of closed sand dunes. Based on this, one or more groups of linear gratings 204 or curved gratings 203 may be added arbitrarily.

[0037] In some embodiments, when the multiple sets of gratings 20 include only two sets of gratings, and one or both sets of gratings are linear gratings 204 extending in a straight line, the inclination of the grating surface 30 of the linear gratings 204 of the two sets of gratings may be set to be different in the extension direction. For example, the inclination of the grating surface 30 may be adjusted by changing the position of the apex of the grating 20 in the width direction of the grating, or by changing the height of the grating 20. In addition, by changing the inclination of the grating surface 30 of the linear grating 204, it is also possible to obtain the trend of change of the reflection surface shown by the texture structure in any direction, i.e., to obtain the effect of change of light and shadow, thereby realizing the visual effect of a closed sand dune.

[0038] 3a and 3b, the light reflection state at various grating surfaces 30 is shown. The left arrow in the figure represents the path of the incident light, and the arrow in the other direction represents the path of the reflected light. In FIG. 3a, it can be seen that from top to bottom, the width of the grating 20 remains the same, and the height gradually decreases (the inclination of the grating surface 30 gradually decreases). According to the path of the reflected light, it can be seen that the light reflected to the human eye gradually decreases, and in FIG. 3b, from top to bottom, the height of the grating 20 remains the same, and the width gradually increases (the inclination of the grating surface 30 gradually decreases), and according to the path of the reflected light, it can be seen that the light reflected to the human eye gradually decreases. From this, it can be seen that the smaller the inclination of the grating surface 30, the less light is reflected, and the greater the inclination of the grating surface 30, the more light is reflected. Based on this principle, after the multiple groups of gratings 20 are crossed, for example, after the multiple groups of gratings 20 are crossed through computer operation software, the crossing positions of the multiple groups of gratings (such as two sets of gratings) can also be processed according to the actually required texture effect, that is, the inclination of the grating surface at the crossing position is processed to obtain the expected texture effect.

[0039] Specifically, referring to FIG. 4 and FIG. 5, the arrow in FIG. 4 indicates the direction of the reflection surface of the grating. In FIG. 4, the first grating 201 and the second grating 202 are crossed to obtain a texture structure 100 in which the direction of the reflection surface changes. In this embodiment, the processing of the intersection after the gratings are crossed can be described with reference to FIG. 5. The thin solid line in FIG. 5 represents the cross section of the first grating 201, the dotted line represents the cross section of the second grating 202, and the thick solid line represents the cross section of the intersection 40 obtained after processing the crossing gratings. In the figure, the area where the orthogonal projections of multiple groups of gratings 20 overlap on the substrate 10 is configured as the overlap area. The structure of the grating 20 corresponding to the overlap area is configured as the intersection 40. The overlap area has multiple position points A(x,y), and although only one point is shown in the figure, it can be understood that the overlap area is configured as multiple position points. The number of intersecting gratings 20 in the overlap area is represented by n. The heights corresponding to the intersecting gratings 20 of the multiple groups at each position point A(x,y) are h1, h2, ..., hn, respectively. The height of the intersection portion 40 at the corresponding position point A(x,y) is represented by H. In one embodiment, the value of H may be the average height of the gratings of the multiple groups (h1+h2+...+hn) / n. As shown in FIG. 5, the multiple groups of gratings 20 include a first grating 201 and a second grating 202. The height of the first grating 201 corresponding to the position point A(x,y) is h1, the height of the second grating 202 corresponding to the position point A(x,y) is h2, and the height corresponding to the intersection portion 40 at the corresponding position point A(x,y) is H=(h1+h2) / 2. In design, the two sets of gratings can be first intersected, and then the gratings in the overlapping area can be cut according to the preset height value of the intersection portion 40. For example, in FIG. 5, to obtain the expected intersection 40, one cuts out the grating outside the contour formed by the thick solid line and the substrate 10.According to the experimental results, as shown in FIG. 5, when the height of the intersection 40 is averaged, the grating 20 and the intersection 40 transition smoothly, resulting in a fused light and shadow effect as shown on the right side of FIG. 4 so as to obtain a better dune effect.

[0040] In addition, referring to FIGS. 7 and 8, although the expression methods of each parameter and each grating are the same as those of the previous embodiment, the difference from the embodiments shown in FIGS. 4 and 5 is that in this embodiment, the value of the height H corresponding to the corresponding position point A(x, y) of the intersection 40 can be the smallest among h1, h2,..., hn, that is, it can be the smaller one among the heights of multiple groups of gratings. For example, in FIG. 8, the height of the first grating 201 is h1, the height of the second grating 202 is h2, and h1 < h2. In this embodiment, the height H of the intersection 40 may be h1. Similarly, in order to obtain the expected intersection 40, the extra gratings in the overlapping area may be cut in the same way as above. According to the method of obtaining the intersection 40 as shown in FIG. 8, the light and shadow effect shown on the right side of FIG. 7 can be obtained. In other embodiments of the present disclosure, the height value of the intersection is not limited to this and may be adjusted according to the actual required texture effect. For example, for the grating of the intersection, any value may be set between the minimum value and the maximum value of the height of the overlapping area.

[0041] In the embodiments of the present disclosure, the intersection 40 may be configured as a pyramid or a prism, that is, the cross-section of the intersection 40 may be configured as a triangle as shown in FIG. 8, or may be configured as an irregular trapezoidal structure as shown in FIG. 5. It can be understood that the shape of the intersection portion 40 in the embodiments of the present disclosure is not limited to this and may be modified and adjusted according to the shape of the grating.

[0042] Since each group of gratings 20 has multiple grating units 21, the texture structure 100 formed after the intersection may have multiple intersections 40. In the embodiment of the present disclosure, referring to Figs. 10 to 12 and Figs. 14 to 16, the shapes of the multiple intersections 40 may be set to be different. For example, different shapes of the intersections 40 may be realized by relying on the shape change of the grating itself, or the inclination of the grating surface 30 of the intersections 40 may be changed by changing the vertex position of the intersections 40, or the size of the intersections 40 may be changed to realize refraction and reflection of light at different angles and different intensities. This realizes the light and shadow of the sand dunes with closed three-dimensional characteristics.

[0043] Additionally, in embodiments of the present disclosure, the intersections 40 may be split again into multiple small pieces, or the distance between the intersections 40 may be changed by disconnecting the grating between adjacent intersections 40 to modify the texture. The effect exhibited by the structure may be adjusted to achieve a desired effect. For example, FIG. 6a shows the effect of cutting the textured structure 100 of FIG. 4, FIG. 6b shows the effect of raster cutting the textured structure 100 of FIG. 4 to widen the gap between the intersections 40, and FIG. 6c shows the effect of cutting the textured structure 100 of FIG. 6b again. As another example, FIG. 9a shows the effect of cutting the textured structure 100 of FIG. 7, FIG. 9b shows the effect of raster cutting the textured structure 100 of FIG. 7 to widen the gap between the intersections 40, and FIG. 9c shows the effect after cutting the textured structure 100 of FIG. 9b again.

[0044] According to one embodiment of the present disclosure, referring to Fig. 10 to Fig. 12, after two sets of gratings cross, the intersection 40 may be formed into multiple pyramids, and the pyramids have different shapes. Each pyramid may be divided into shapes as shown in Fig. 13. Fig. 13 shows a cross-sectional view after the intersection is divided. Fig. 14 to Fig. 16 show the effect of another grating intersection. Here, the intersection 40 may be configured as an irregular pyramid structure. For example, the base of the pyramid may be curved, and the side of the pyramid may be curved.

[0045] According to a second aspect of the present disclosure, a cover plate is also provided. The cover plate may include the texture structure 100 described above. The cover plate has all the beneficial effects of the texture structure 100 described above and will not be described again here. Specifically, referring to FIG. 25, the cover plate may also include a color fill layer 200 filled on the texture structure 100. For example, the texture structure 100 may be plated with a film layer of the same color. In the present disclosure, it may be made to look different by utilizing the light and shadow of the undulating sand dunes. The color change improves the aesthetics of the cover product.

[0046] According to a third aspect of the present disclosure, a mobile terminal is also provided. The mobile terminal includes the cover plate described above, and has all the beneficial effects of the cover plate described above, which will not be described again here. The cover may be used as a back shell of the mobile terminal to improve the visual effect. Among them, the mobile terminal may include a mobile phone, a tablet, a notebook computer, etc.

[0047] According to a fourth aspect of the present disclosure, a method for fabricating a cover plate is also provided. Referring to FIG. 26, the method includes: in step 101, uniformly applying a photoresist on a glass plate, and performing photolithography exposure on the glass plate with a preset texture. Here, the preset texture refers to the texture obtained by the above-mentioned groups of gratings 20 after cross processing. The designed preset texture data may be transferred to a computer, and then photolithography exposure is performed on the glass plate according to the data, and in step 102, the preset photolithography texture is transferred to the substrate 10. For example, after step 101, the texture after step 101 is developed, dried, plasma cleaned, and then transferred to the substrate 10 by UV transfer, and in step 103, the substrate 10 is bonded to the cover plate through processes such as coating, printing, cutting, and lamination, thereby obtaining a cover plate with a preset texture. As mentioned above, the substrate 10 can be one of a PC sheet, a PET sheet, and a PC / PMMA composite sheet.

[0048] Typically, the cover itself may include a glass plate, which may be directly configured as the substrate 10 of the texture structure 100. Referring to FIG. 27, in an embodiment of the present disclosure, another method of making a cover plate may include, in step 104, applying a photoresist onto the glass plate, generating a texture structure from texture data pre-stored in a computer by exposure and development, and, in step 105, placing the glass plate in a chemical etching tank for etching. Due to the protective effect of the photoresist on the glass, areas with thicker resist resist etching for a longer period of time, and areas with thinner resist resist etching for a shorter period of time. The glass of the substrate 10 will leak out before the thicker resist. Therefore, the glass placed in the etching tank will be non-uniform. With a reasonable etching time, the texture may be copied onto the glass plate of the cover plate, thereby forming the texture structure 100 in an embodiment of the present disclosure, and obtaining the desired cover plate.

[0049] The method of making a cover plate in embodiments of the present disclosure may also include coating, spraying, or printing the cover plate with a textured structure, thereby forming a cover plate product having a gradient color.

[0050] The preferred embodiments of the present disclosure have been described above in detail with reference to the accompanying drawings.However, the present disclosure is not limited to the specific details in the above-described embodiments.Within the scope of the technical concept of the present disclosure, the technical solution of the present disclosure may be simplified in various ways, and all these simple modifications belong to the protection scope of the present disclosure.

[0051] In addition, it should be noted that each specific technical feature described in the above-mentioned specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure describes various possible combinations. The combination methods will not be described further.

[0052] In addition, any combination of the various embodiments of the present disclosure may be implemented and, unless contrary to the concept of the present disclosure, they shall also be considered as being disclosed in the present disclosure.

Claims

1. A substrate (10); a plurality of groups of gratings (20) arranged on one side of the substrate (10), the plurality of groups of gratings (20) being arranged in a cross pattern on a surface of the substrate (10), each group of gratings (20) of the plurality of groups comprising a plurality of grating units (21) arranged side by side and extending in the same direction, each of the plurality of grating units (21) being configured to have a grating surface (30) that is inclined with respect to the substrate (10); A texture structure (100) comprising:

2. 2. The textured structure (100) of claim 1, wherein the groups of gratings (20) are configured to intersect such that the reflective surface of the textured structure (100) exhibits a trend of variation in any direction.

3. The plurality of groups of gratings (20) include: A curved grating (203) extending in a curved manner and / or A linear grating (204) extending in a straight line The textured structure (100) according to claim 1 or 2, comprising:

4. The textured structure (100) according to any one of claims 1 to 3, wherein the plurality of groups of gratings (20) comprises at least two groups of curvilinearly extending curvilinear gratings (203).

5. The textured structure (100) according to any one of claims 1 to 3, wherein the plurality of groups of gratings (20) include two groups of gratings (20), at least one of the two groups of gratings (20) being a linear grating (204) extending in a straight line, and the inclinations of the grating surfaces (30) of the linear grating (204) differ in the extension direction.

6. The textured structure (100) according to any one of claims 1 to 5, wherein a cross section of the grating (20) perpendicular to the extension direction is configured in a triangular or arc shape.

7. The textured structure (100) according to any one of the preceding claims, wherein the tangent value of the angle between the grating surface (30) and the surface of the substrate (10) is between 1:150 and 20:

1.

8. the tangent of the angle between the grating face (30) of at least one set of gratings (20) and the surface of the substrate (10) is between 2:15 and 20:1; and / or the tangent value of the angle between the grating face (30) of at least one set of gratings (20) and the surface of the substrate (10) is between 1:150 and 2:15; The texture structure (100) of claim 7.

9. 9. The textured structure (100) of claim 1, wherein an area where orthogonal projections of the groups of gratings (20) on the substrate (10) overlap is configured as an overlap area, and a structure of the gratings (20) corresponding to the overlap area is configured as an intersection (40), the overlap area having a plurality of position points A(x,y), heights corresponding to the groups of intersecting gratings (20) at each position point A(x,y) are h1, h2,...,hn, respectively, and the height H corresponding to the intersection (40) at the corresponding position point A(x,y) is (h1+h2+...+hn) / n, or the height H corresponding to the intersection (40) at the corresponding position point A(x,y) is the smallest of h1, h2,...,hn, where n is the number of the plurality of gratings (20) intersecting in the overlap area.

10. The textured structure (100) of claim 9, wherein the intersections (40) are configured as pyramids or prisms.

11. The textured structure (100) according to claim 9 or 10, wherein the textured structure (100) has a plurality of intersections (40), the shapes of the plurality of intersections (40) being different.

12. A cover plate comprising the textured structure (100) according to any one of the preceding claims.

13. A mobile terminal comprising a cover plate according to claim 12.

14. A method for making a cover plate, said cover plate comprising the textured structure (100) according to any one of claims 1 to 11, said method comprising the steps of: uniformly applying a photoresist onto a glass plate and performing a photolithography exposure on the glass plate with a pre-defined texture; transferring said pre-defined photolithographic texture onto said substrate (10); Attaching the substrate (10) to the cover; A method comprising:

15. The method of claim 14, wherein the substrate (10) comprises one of a PC sheet, a PET sheet, and a PC / PMMA composite sheet.

16. A method for producing a cover plate, said cover plate comprising a glass plate configured as said substrate (10) and said textured structure (100) according to any one of claims 1 to 11, said production method comprising the steps of: applying a photoresist onto the glass plate, exposing and developing it to create a preset texture; The glass plate is placed in a chemical solution for etching. A method comprising:

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