Decorative substrate, its manufacturing method and its application

Abstract

The decorative substrate includes a base material and a textured layer disposed on the base material. A plurality of lattice grids are disposed on the surface of the textured layer facing away from the base material. At least the plurality of lattice grids include a plurality of lattice units arranged in a ring shape around a central point. Each lattice unit includes a plurality of band-like protrusions. The band-like protrusions are arranged continuously in the radial direction of a circle centered at the central point. In the lattice grid, each band-like protrusion includes a first surface close to the central point and a second surface far from the central point. The first and second surfaces are connected to a third surface of the band-like protrusion. The included angle formed by the first and third surfaces of the band-like protrusion is less than or equal to the included angle formed by the second and third surfaces of the band-like protrusion.

Description

[Technical Field]

[0001] This disclosure claims priority to Chinese Patent Application No. 202211088106.2, entitled "DECORATIVE SUBSTRATE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF," filed with the China Patent Office on September 6, 2022, the entire contents of which are incorporated herein by reference.

[0002] FIELD OF THE DISCLOSURE The present disclosure relates to the field of decorative technology, and in particular to decorative substrates, and their manufacturing methods and applications. [Background technology]

[0003] Currently, the texture and color of electronic device housing components, such as the back cover of a mobile phone, are usually achieved through a decorative layer attached to the surface of the cover plate. However, the appearance of decorative cover plates on the market today is relatively monotonous, which fails to meet people's individual needs and reduces the competitiveness of the products. Summary of the Invention

[0004] To solve the above problems, the present disclosure provides a decorative substrate, which can achieve a three-dimensional woven grid pattern effect similar to that of fabric through a texture layer with a specific structure, thereby presenting a good decorative effect.

[0005] A first aspect of the present disclosure provides a decorative substrate, the decorative substrate including a substrate and a textured layer disposed on the substrate, wherein a plurality of grating grids are disposed on a surface of the textured layer remote from the substrate, at least two of the grating grids include a plurality of grating units arranged in a ring shape around a central point, the grating units include a plurality of strip-shaped protrusions, the plurality of strip-shaped protrusions being continuously arranged in a radial direction of a circle centered on the central point; In the lattice grid, the band-shaped protrusions include a first surface close to a center point, a second surface away from the center point, and a third surface connected to the first and second surfaces, the third surface being in contact with the substrate, and the angle formed by the first surface and the third surface being less than or equal to the angle formed by the second surface and the third surface.

[0006] In the textured layer of the present disclosure, the band-like protrusions with a specific structure and arrangement within the lattice unit can deflect reflected light from the surface of the protrusions toward the center point of the lattice grid. The circular arrangement of multiple lattice units ensures that the reflection paths of light within different lattice units are concentrated at the center point of the lattice grid. By converging the reflected light at the center point of the lattice grid, a protrusion effect with bright central areas and dark edge areas of the lattice grid can be achieved. At a macroscopic level, the decorative substrate presents a three-dimensional textured grid pattern, thereby significantly improving the decorative effect.

[0007] In one example, in a lattice grid, adjacent lattice units have a common edge and multiple lattice units intersect at a center point.

[0008] In one example, in the lattice grid, a gap is formed between adjacent lattice units, and the distance from the lattice unit to the center point is 100 μm or less.

[0009] In one example, in the lattice grid, a gap is formed between adjacent lattice units, and the distance from the lattice unit to the center point is 1 / 5 or less of the diameter of the circumscribing circle of the lattice grid.

[0010] In one example, in the textured layer, adjacent lattice grids are mirror-symmetric along an axis of symmetry, and the distance from the lattice grid to the axis of symmetry is 1 / 10 or less of the diameter of the circumscribing circle of the lattice grid, or the distance from the lattice grid to the axis of symmetry is 50 μm or less.

[0011] In one example, the angle formed by the first surface and the third surface is between 11° and 40°.

[0012] In one example, the angle formed by the second surface and the third surface is between 80° and 100°.

[0013] In one example, in the lattice grid, adjacent lattice units are mirror-symmetric along a symmetry axis, and the angle formed between the extension direction of each of the plurality of strip-shaped protrusions and the symmetry axis is 20° to 70°.

[0014] In one example, the ratio of the height of the strip-shaped protrusion in the first direction to the width of the strip-shaped protrusion in the second direction is 0.05 to 0.4, the first direction is perpendicular to the plane on which the substrate is located, and the second direction is perpendicular to the extension direction of the strip-shaped protrusion and the first direction.

[0015] In one example, in a lattice unit, the aspect ratio of the plurality of strip-like protrusions gradually decreases in a direction away from the center point, where the aspect ratio is the ratio of the height of the strip-like protrusions in a first direction to the width of the strip-like protrusions in a second direction, the first direction being perpendicular to the plane on which the substrate is located, and the second direction being perpendicular to the extension direction of the strip-like protrusions and the first direction.

[0016] In one example, the difference in aspect ratio between adjacent strips in a lattice unit is 0.1 or less, where the aspect ratio is the ratio of the height of the strip in a first direction to the width of the strip in a second direction, the first direction being perpendicular to the plane on which the substrate is located, and the second direction being perpendicular to the extension direction of the strip and the first direction.

[0017] In one example, the height of the strip-shaped protrusions in the first direction is 0.1 μm to 20 μm, and the first direction is perpendicular to the plane in which the substrate is located.

[0018] In one example, the width of the strip-shaped protrusion in the second direction is 1 μm to 150 μm, the first direction is perpendicular to the plane on which the substrate is located, and the second direction is perpendicular to the extension direction of the strip-shaped protrusion and the first direction.

[0019] In one example, the length of the band-shaped protrusion having the longest extension length in the lattice unit is 100 μm to 3000 μm in the extension direction of the band-shaped protrusion.

[0020] In one example, the cross-sectional shape of the band-like protrusion in the first direction includes one or more of a straight line portion and an arc portion, and the first direction is perpendicular to both the substrate and the extension direction of the band-like protrusion.

[0021] In one example, the shape of the band-like projection in its extension direction includes one or more of a saddle shape, a zigzag shape, and an arc shape.

[0022] In one example, the decorative substrate further includes a modification layer, which includes one or more of a color-forming layer, a matte layer, and a gloss layer, and the modification layer is disposed on the surface of the texture layer and / or the surface of the substrate.

[0023] A second aspect of the present disclosure provides a method for manufacturing a decorated substrate, the method comprising: a step of forming a texture layer on a substrate to obtain a decorative substrate, the method for manufacturing the texture layer including one or more of transfer printing, etching, and thermoforming; a plurality of lattice grids arranged on a surface of the texture layer away from the substrate, at least two or more of the lattice grids including a plurality of lattice units arranged in a ring shape around a central point, the lattice unit including a plurality of band-shaped protrusions, the plurality of band-shaped protrusions being arranged continuously in a radial direction of a circle centered on the central point; In the lattice grid, the band-like projections include a first surface close to the center point, a second surface away from the center point, and a third surface connected to the first and second surfaces, and the angle formed between the first and third surfaces is less than or equal to the angle formed by the second and third surfaces.

[0024] The manufacturing method provided by the present disclosure is simple and easy to operate, and facilitates industrial production with mature technology.

[0025] A third aspect of the present disclosure provides a cover plate comprising a decorative substrate as described in the first aspect and a base, the decorative substrate being disposed on a surface of the base.

[0026] A fourth aspect of the present disclosure provides an electronic device including the cover plate described in the third aspect. [Brief explanation of the drawings]

[0027] [Figure 1] 1A and 1B are diagrams illustrating the structure of a decorative substrate in one example of the present disclosure. [Figure 2] FIG. 2 is a diagram illustrating the structure of a texture layer in an example of the present disclosure. [Figure 3] FIG. 2 is a diagram illustrating the structure of a texture layer in an example of the present disclosure. [Figure 4] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 5] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 6] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 7] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 8] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 9A] FIG. 10 is a diagram illustrating the arrangement of band-shaped protrusions within a lattice grid in an example of the present disclosure. [Figure 9B]FIG. 9B is a cross-sectional view of a strip in the lattice grid shown in FIG. 9A. [Figure 10] FIG. 1 illustrates the principle of a lattice grid in an example of the present disclosure. [Figure 11] 10A to 10C are diagrams illustrating different cross sections of a band-shaped protrusion in an example of the present disclosure. [Figure 12] 10A and 10B are diagrams illustrating the structure of band-shaped protrusions in one example of the present disclosure. [Figure 13A] FIG. 10 is a top view of a band-like projection according to an example of the present disclosure. [Figure 13B] 13B is a diagram illustrating the principle of light reflection in a cross section of a band-shaped protrusion taken along line AA in FIG. 13A. FIG. [Figure 14] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 15] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 16] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 17] FIG. 10 is a diagram illustrating a structure of a lattice grid in an example of the present disclosure. [Figure 18A] 10A and 10B are diagrams illustrating the structure of a decorative substrate in another example of the present disclosure. [Figure 18B] FIG. 10 illustrates the structure of a cover plate in another example of the present disclosure. [Figure 18C] FIG. 1 illustrates a structure of an electronic device according to an example of the present disclosure. [Figure 19] FIG. 2 is a top view of the decorative substrate according to the first embodiment of the present disclosure. [Figure 20] FIG. 10 illustrates the grid pattern effect of the decorative substrate in Example 1 of the present disclosure. [Figure 21] FIG. 2 illustrates the weaving effect of the decorative substrate in the first embodiment of the present disclosure. [Figure 22] FIG. 10 is a top view of a decorative substrate according to a second embodiment of the present disclosure. [Figure 23] FIG. 10 illustrates the grid pattern effect of the decorative substrate in Example 2 of the present disclosure. [Figure 24] FIG. 10 is a diagram illustrating the woven effect of the decorative substrate in Example 2 of the present disclosure. [Figure 25] FIG. 10 is a top view of a decorative substrate according to a third embodiment of the present disclosure. [Figure 26] FIG. 10 illustrates the grid pattern effect of the decorative substrate in Example 3 of the present disclosure. [Figure 27] FIG. 10 illustrates the woven effect of the decorative substrate in Example 3 of the present disclosure. [Figure 28] FIG. 10 is a top view of a decorative substrate according to a fourth embodiment of the present disclosure. [Figure 29] FIG. 10 illustrates the grid pattern effect of the decorative substrate in Example 4 of the present disclosure. [Figure 30] FIG. 10 is a diagram illustrating the woven effect of the decorative substrate in Example 4 of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0028] The technical solutions in the examples of the present disclosure are clearly and completely described below in combination with the drawings in the examples of the present disclosure. Of course, the described examples are only a part of the examples of the present disclosure, but are not all of them. Based on the examples in the present disclosure, all other examples obtained by those skilled in the art without creative efforts are within the scope of protection of the present disclosure.

[0029] FIG. 1 illustrates the structure of a decorative substrate 100 according to an example of the present disclosure. The decorative substrate 100 includes a substrate 20 and a textured layer 10 disposed on the substrate 20. The substrate 20 may be made of, but is not limited to, one or more of plastic, metal, ceramic, and glass. In an embodiment of the present disclosure, a plurality of lattice grids, which may be disposed continuously or intermittently, are disposed on the surface of the textured layer 10. FIG. 2 illustrates the structure of the textured layer 10 according to an example of the present disclosure, showing a plurality of lattice grids 11 disposed continuously on the surface of the textured layer 10. FIG. 3 illustrates the structure of the textured layer 10 according to an example of the present disclosure, showing a plurality of lattice grids 11 disposed intermittently on the surface of the textured layer 10. In some embodiments of the present disclosure, the plurality of lattice grids are disposed intermittently, and adjacent lattice grids are mirror-symmetrical along the symmetry axis. The distance from the lattice grid to the symmetry axis is 1 / 10 or less of the diameter of the circumscribing circle of the lattice grid, and the distance from the lattice grid to the symmetry axis is 50 μm or less. The distance from the lattice grid to the axis of symmetry refers to the distance from the point closest to the axis of symmetry within the lattice grid to the axis of symmetry.

[0030] In some examples of the present disclosure, the lattice grid includes a plurality of lattice units arranged in a ring shape around a center point. The lattice unit includes a plurality of band-like protrusions arranged continuously in the radial direction of a circle centered on the center point. It should be noted that the circular arrangement of the lattice units refers to the overall shape and arrangement of the lattice units and does not limit the arrangement of the band-like protrusions within the lattice unit. Furthermore, the extension directions of the plurality of band-like protrusions may or may not be parallel to each other. In some examples of the present disclosure, the lattice grid includes a plurality of lattice units arranged in a ring shape around a center point and joined to each other, i.e., adjacent lattice units have a common edge, and the plurality of lattice units intersect at the center point. See FIG. 4, which illustrates the structure of a lattice grid 11 in one example of the present disclosure. The lattice grid 11 has a rectangular shape and includes four lattice units 12 arranged in a ring shape around a center point P and joined to each other. Each lattice unit 12 has a rectangular shape and includes several band-like protrusions 13 extending in parallel to each other. See FIG. 5, which illustrates the structure of a lattice grid 11 in one example of the present disclosure. The lattice grid 11 has a triangular shape and includes three lattice units 12 that are joined to each other and arranged in a circular pattern around a center point P. Each lattice unit 12 has a triangular shape and includes several band-like protrusions 13 that extend in directions parallel to each other. Refer to FIG. 6 , which illustrates the structure of the lattice grid 11 in one example of the present disclosure. The lattice grid 11 has a pentagonal shape and includes five lattice units 12 that are joined to each other and arranged in a ring shape around a center point P. Each lattice unit 12 has a triangular shape and includes several band-like protrusions 13 that extend in directions parallel to each other.

[0031] In some examples of the present disclosure, a gap is formed between adjacent lattice units in the lattice grid. See FIG. 7 , which illustrates the structure of the lattice grid 11 in one example of the present disclosure. In FIG. 7 , adjacent lattice units 12 in the lattice grid 11 are spaced apart, and the distance d0 from the lattice unit 12 to the center point P is the distance from the point on the lattice unit 12 closest to the center point P to the center point P. See FIG. 8 , which illustrates the structure of the lattice grid 11 in one example of the present disclosure. In FIG. 8 , adjacent lattice units 12 in the lattice grid 11 are spaced apart, and the shape of the lattice unit 12 is triangular. In some examples of the present disclosure, the distance d0 from the lattice unit 12 to the center point P is 100 μm or less. In some examples of the present disclosure, the distance d0 from the lattice unit 12 to the center point P is 1 / 5 or less of the diameter Φ of the circumscribing circle of the lattice grid 11. Controlling the gap distance between the lattice grids 11 can ensure that the texture layer has a more pronounced textured grid pattern effect overall.

[0032] In some examples of the present disclosure, the band-like protrusion includes a first surface close to the center point, a second surface away from the center point, and a third surface connected to the first and second surfaces. The angle between the first and third surfaces is less than or equal to the angle between the second and third surfaces of the band-like protrusion. Here, the third surface of the band-like protrusion refers to the surface of the band-like protrusion closest to the substrate and parallel to the plane of the substrate. For example, in this example, the third surface of the band-like protrusion is the surface in contact with the substrate. Please refer to Figures 9A and 9B together. Figure 9A illustrates the arrangement direction of the band-like protrusions 13 in the lattice grid 11 of the example of the present disclosure, and Figure 9B illustrates a cross-sectional view of the band-like protrusions 13 in the lattice grid 11 shown in Figure 9A. Specifically, in Figure 9A, the multiple band-like protrusions 13 are cut along the plane where line ab is located, resulting in the cross-sectional view of the multiple band-like protrusions 13 shown in Figure 9B. The strip-shaped protrusion 13 has a first surface 131 close to the center point P, a second surface 132 away from the center point P, and a third surface 133 connected to the first surface 131 and the second surface 132, and the third surface 133 is in contact with the substrate (20). The angle between the first surface 131 and the third surface 133 is α, and the angle between the second surface 132 and the third surface 133 is β, where α≦β. The condition α≦β ensures that light reflected from the surface of the strip-shaped protrusion 13 can be focused at the center point P of the lattice grid 11. See FIG. 10 , which illustrates the principle of the lattice grid 11 in one example of the present disclosure. When incident light strikes the surface of the band-like protrusions 13, the reflection path of the incident light can be deflected toward the center point P of the lattice grid 11 because the band-like protrusions 13 are arranged around the center point P and the angle α between the first surface 131 and the third surface 133 close to the center point P is less than or equal to the angle β between the second surface 132 and the third surface 133. The reflected light from the multiple band-like protrusions 13 converges on the center point P of the lattice grid 11, and the brightness at the center point P is significantly higher than the brightness outside, with the brightness gradually decreasing along the radial direction of the circle centered on the center point P, thus creating the effect of a raised grid.

[0033] In some examples of the present disclosure, the angle α between the first surface 131 and the third surface 133 of the band-shaped projection 13 is between 11° and 40°, i.e., 11°≦α≦40°. The angle α can be specifically, but not limited to, 11°, 15°, 18°, 20°, 25°, 30°, 35°, or 40°. In some examples of the present disclosure, the angle β between the second surface 132 and the third surface 133 is between 80° and 100°, i.e., 80°≦β≦100°. The angle β can be specifically, but not limited to, 80°, 85°, 90°, 95°, or 100°. Controlling the angle α between the first surface 131 and the third surface 133 and the angle β between the second surface 132 and the third surface 133 helps to concentrate the light reflected by the strip-like protrusions 13 onto the center point P of the lattice grid 11, thereby enhancing the three-dimensional effect of the textured grid pattern.

[0034] In the present disclosure, the first direction, second direction, and extension direction of the band-like protrusion are mutually orthogonal. The second direction and extension direction of the band-like protrusion are parallel to the substrate, and the first direction is perpendicular to the plane of the substrate. In some examples of the present disclosure, the cross-sectional shape of the band-like protrusion perpendicular to its extension direction includes one or more of a straight portion and an arc portion. The arc portion includes an upwardly convex arc portion and a downwardly convex arc portion. This cross-sectional shape can be understood as the intersection line obtained by cutting the band-like protrusion with a plane perpendicular to the extension direction of the band-like protrusion and perpendicular to the substrate; that is, the intersection line between the outer surface of the band-like protrusion and the plane is the locus of the cut. See FIG. 11, which illustrates cross-sectional views of different band-like protrusions 13 in one example of the present disclosure. The cross-section of the band-like protrusion 13 includes a triangular, trapezoidal, sectoral, or irregular shape. The trajectory of the band-shaped protrusion 13 having a triangular or trapezoidal cross section is a straight line segment, while the trajectory of the band-shaped protrusion 13 having a fan-shaped cross section is an arc segment. The trajectory of the band-shaped protrusion 13 having an irregular shape 1 includes a straight line segment and an upwardly convex arc segment, while the trajectory of the band-shaped protrusion 13 having an irregular shape 2 includes a straight line segment and a downwardly convex arc segment. In some examples of the present disclosure, the vertex connecting line of the band-shaped protrusion 13 in different cutting trajectories is used as the dividing line between the first and second faces. The vertex of the band-shaped protrusion 13 refers to the highest point of the band-shaped protrusion 13 relative to the third face 133 in the first direction. In some examples of the present disclosure, as shown in the cross-sectional view of the irregular shape 1 in FIG. 11 , the first face of the band-shaped protrusion 13 is an upwardly convex arc surface, i.e., the cutting trajectory of the cross section near the center point of the band-shaped protrusion 13 is an upwardly convex arc segment. The reflected light from this structure of the band-like protrusions 13 is more divergent than the reflected light from a planar structure of the band-like protrusions 13, and the resulting weaving effect is softer. In some examples of the present disclosure, as shown in the cross-sectional view of the irregular shape 2 in Figure 11, the first surface of the band-like protrusions 13 is a downwardly convex arc surface, i.e., the cutting locus of the cross section near the center point of the band-like protrusions 13 is a downwardly convex arc portion. The reflected light from this structure of the band-like protrusions 13 is more concentrated than the reflected light from a planar structure of the band-like protrusions 13, the brightness at the center of the lattice grid is higher, the resulting weaving effect is clearer and more distinct, and the three-dimensional effect is better.

[0035] In the present disclosure, the height of the band-like protrusion 13 refers to the difference in height between the highest point of the band-like protrusion 13 and the third surface 133 relative to the third surface 133. The width of the band-like protrusion 13 refers to the maximum width of the band-like protrusion 13 in the second direction. See FIG. 12 , which illustrates the structure of the band-like protrusion 13 in one example of the present disclosure. The length of the bottom edge of the cross section of the band-like protrusion 13 perpendicular to the extension direction of the band-like protrusion 13 is the width d1 of the band-like protrusion 13. The distance from the highest point of the cross section of the band-like protrusion 13 perpendicular to the extension direction of the band-like protrusion 13 to the third surface 133 of the band-like protrusion 13 is the height h of the band-like protrusion 13, which can also be calculated by the difference in height between the highest point and the lowest point of the cutting path. In some examples of the present disclosure, the height h of the band-like protrusion 13 in the first direction X is 0.1 μm to 20 μm. The height h may be, but is not limited to, 0.1 μm, 0.5 μm, 1 μm, 3 μm, 5 μm, 10 μm, 15 μm, or 20 μm. In some examples of the present disclosure, the height h of the band-like protrusions 13 in the first direction X is 1 μm to 20 μm. In some examples of the present application, the width d1 of the band-like protrusions 13 in the second direction is 1 μm to 150 μm. The width d1 may be, but is not limited to, 1 μm, 5 μm, 10 μm, 30 μm, 50 μm, 65 μm, 80 μm, 100 μm, 120 μm, or 150 μm. In some examples, the width d1 of the band-like protrusions 13 in the second direction is 5 μm or less. The smaller the width of the band-like protrusions 13, the more light scattering can be promoted, thereby creating a colorful grid effect. In some examples, the width d1 of the strip-like protrusions 13 in the second direction Y is 30 μm to 100 μm. The reflective effect of the strip-like protrusions 13 with this width is more obvious, which further enhances the three-dimensional effect of the textured grid pattern. Here, the first direction X is perpendicular to the plane of the substrate 20, and the second direction Y is perpendicular to the extension direction of the strip-like protrusions 13 and the first direction X.

[0036] In some examples of the present disclosure, the ratio of the height h of the band-like protrusion 13 in the first direction X to the width d1 of the band-like protrusion 13 in the second direction Y (i.e., the width d1 of the third surface 133 in the second direction Y) is 0.05 to 0.4. Specifically, the ratio of the height h of the band-like protrusion 13 to the width d1 of the third surface 133 of the band-like protrusion 13 can be, but is not limited to, 0.05, 0.1, 0.2, 0.3, or 0.4. The aspect ratio of the band-like protrusion 13 affects the angle of the reflected light and therefore the intensity of the light and shadow effects. Please refer to Figures 13A and 13B together. Figure 13A is a top view of a band-like protrusion 13 provided by an example of the present disclosure, and Figure 13B is a schematic diagram of the principle of light reflection related to the cross-section of the band-like protrusion 13 at AA. In Figure 13B, the color of the incident light path is darker and the color of the reflected light path is lighter. Under the same incident light conditions, the aspect ratio of the cross section affects the amount of light reflected to the human eye. If the width of the third surface 133 of the strip 13 is the same, the shorter the height of the strip 13, the less light is reflected to the human eye. If the height of the strip 13 is the same, the wider the width of the third surface 133 of the strip 13, the less light is reflected to the human eye. In general, the greater the ratio between the height of the strip 13 and the width of the third surface 133 of the strip 13, the more light is reflected to the human eye, the brighter the light and shadow effects and the more pronounced the weaving effect.

[0037] In some examples of the present disclosure, the aspect ratio of the multiple band-like protrusions in a lattice unit gradually decreases from a center point toward the center point. The larger the aspect ratio of the band-like protrusions, the brighter the reflected light. The gradual change in aspect ratio described above can further enhance the contrast between the center and edges of the lattice grid, thereby enhancing the three-dimensional appearance of the lattice grid. The aspect ratio of the band-like protrusions is the ratio between the height of the band-like protrusions in a first direction and the width of the band-like protrusions in a second direction. The first direction is perpendicular to the plane on which the substrate is located, and the second direction is perpendicular to both the extension direction of the band-like protrusions and the first direction. In some examples of the present disclosure, the difference in aspect ratio between adjacent band-like protrusions in a lattice unit is 0.1 or less. Controlling the difference in aspect ratio between adjacent band-like protrusions can make the gradual change in brightness more natural and enhance the effect of the textured grid pattern.

[0038] In some examples of the present disclosure, the size of the lattice grid is 100 μm to 3000 μm. The size of the lattice grid refers to the length of the band-like protrusion having the longest extension length within a lattice unit in the extension direction of the band-like protrusion. Specifically, the length of the band-like protrusion having the longest extension length within a lattice unit in the extension direction can be, but is not limited to, 100 μm, 200 μm, 400 μm, 600 μm, 800 μm, 1000 μm, 1500 μm, 2000 μm, 2500 μm, or 3000 μm.

[0039] Referring again to Figure 4, the lengths of the multiple strip-like protrusions 13 in the same lattice unit 12 in the extension direction of the strip-like protrusions 13 first gradually increase and then gradually decrease in the direction away from the center point P. Referring again to Figures 5 and 6, the lengths of the multiple strip-like protrusions 13 in the same lattice unit 12 in the extension direction of the strip-like protrusions 13 gradually increase in the direction away from the center point P.

[0040] 4 to 6. In FIGS. 4 to 6, the band-like protrusion 13 having the longest extension length within a lattice unit 12 has a length d in the extension direction of the band-like protrusion 13. In some examples, when the size of the lattice grid 11 is 150 μm or less, the textured grid pattern effect expressed by the decorative substrate becomes unclear. In some examples, when the size of the lattice grid 11 is greater than 150 μm, the textured grid pattern effect expressed by the decorative substrate becomes relatively clear. In some examples of the present disclosure, the length of the band-like protrusion 13 having the longest extension length within a lattice unit 12 in the extension direction is 200 μm to 500 μm. The textured grid pattern expressed by a lattice grid of this size has a relatively obvious three-dimensional effect and a relatively delicate texture.

[0041] In some examples of the present disclosure, adjacent lattice units in a lattice grid are mirror-symmetrical along the symmetry axis, and the angle between the extension direction of each of the multiple strip-like protrusions and the symmetry axis is 20° to 70°. See FIG. 7. The extension direction of the strip-like protrusions 13 forms an angle γ with the symmetry axis A, and the opening direction of the angle γ faces the center point P of the lattice grid 11. In some examples of the present disclosure, adjacent lattice units 12 have a common edge 14 in the lattice grid 11. Schematic diagrams of the position of the common edge can be seen in FIGS. 4 to 6. Of these, the extension direction of the strip-like protrusions 13 forms an angle γ with the common edge 14 or the symmetry axis A. Specifically, the angle γ formed by the extension direction of the strip-like protrusions 13 and the common edge 14 or the symmetry axis A can be, but is not limited to, 20°, 30°, 50°, 60°, or 70°. The extension direction of the strip-like protrusions 13 also affects the angle of reflected light, thereby affecting the intensity of the light and shadow effects. When the angle γ formed by the extension direction of the strip-like protrusions 13 and the symmetry axis A is controlled to be between 20° and 70°, the light reflected by the strip-like protrusions 13 in different grating units is more concentrated, thereby increasing the brightness at the center point P of the grating grid 11. In some examples of the present disclosure, the angle γ formed by the extension direction of the strip-like protrusions 13 and the symmetry axis A is between 30° and 60°. Within this angle range, the contrast between light and shadow in the grating grid is increased, and the three-dimensional effect of the textured grid pattern is enhanced.

[0042] In some examples of the present disclosure, the shape of the band-like protrusion in its extension direction includes one or more of a straight line, a saddle line, a zigzag line, and a circular arc line. The shape of the band-like protrusion in its extension direction can be understood as a connecting line between the protrusions of the vertices of the band-like protrusions at different positions on the substrate in the extension direction of the band-like protrusions. See FIG. 14, which illustrates the structure of a lattice grid in an example of the present disclosure. The lattice grid includes four lattice units, and the shape of the band-like protrusions in each lattice unit in its extension direction is straight. See FIG. 15, which is a schematic structural diagram of a lattice grid provided by an example of the present disclosure. The lattice grid includes four lattice units, and the shape of the band-like protrusions in each lattice unit in its extension direction is saddle-shaped. See FIG. 16, which is a schematic structural diagram of a lattice grid provided by an example of the present disclosure. The lattice grid includes four lattice units, and the shape of the band-like protrusions in each lattice unit in its extension direction is zigzag. The saddle-shaped and zigzag-shaped band protrusions can further add a matte finish to the decorative layer based on a textured grid pattern effect, thus enriching the appearance of the decorative substrate. See FIG. 17, which is a schematic structural diagram of a lattice unit provided by an example of the present disclosure. The lattice grid includes four lattice units, and the band protrusions within each lattice unit are arc-shaped in their extension direction. The arc-shaped band protrusions can adjust the details of the lattice grid protrusions and make the appearance of the decorative substrate more diverse.

[0043] In some examples of the present disclosure, reference is made to FIG. 18A, which is a schematic structural diagram of a decorative substrate 100 provided by another example of the present disclosure. The decorative substrate 100 further includes a modified layer 30, which includes one or more of a color layer, a matte layer, and a gloss layer. In the examples of the present disclosure, the color layer can be a coating layer or an ink layer as long as it has a specific color. The combination of a color layer and a texture layer can achieve color variation in a single-color coating, allowing the decorative substrate to have a rich color appearance. The matte layer has a certain anti-slip function and a softer visual effect, thereby enriching the appearance of the product. The gloss layer refers to the modified layer 30, which can express a sparkle effect. In some examples, the gloss layer includes a coating doped with gloss particles. The gloss layer can provide a certain glamorous effect to the decorative substrate. In this example, the modified layer 30 is disposed on the surface of the texture layer 10 facing away from the substrate 20. In some examples, the modified layer is disposed on the surface of the substrate. In some examples, the modification layer is disposed on the surface of the substrate and on the surface of the texture layer.

[0044] In the decorative substrate provided by the present disclosure, the textured layer has a regularly distributed micro-texture structure. When light strikes the textured surface, the band-like protrusions with different angles, widths, and cross sections in the textured layer cause different wavelengths of light to form a realistic visual with characteristic changes in highlights, mid-tones, and shadows through reflection, scattering, or refraction, making the surface of the decorative substrate present a three-dimensional light and shadow effect of a small raised grid, thus greatly improving the aesthetics of the product.

[0045] The present disclosure also provides a method for manufacturing a decorative substrate. In examples of the present disclosure, the method for manufacturing the texture layer includes one or more of etching, UV transfer, and hot press molding. In some examples, the substrate includes a transparent film. For example, the substrate can be a polyester substrate (PET film), a polycarbonate substrate (PC film), a polymethyl methacrylate substrate (PMMA film), or a PC / PMMA composite sheet. The method for manufacturing the decorative substrate includes creating a texture master having a texture pattern on a mold according to the pattern of the texture layer, and transferring the texture master onto the surface of a substrate to obtain a decorated substrate. In some examples, the substrate includes a plastic sheet. The method for manufacturing the decorated substrate includes transferring the texture master to the surface of a substrate and obtaining a decorated substrate through hot press molding. The resulting decorated substrate is a textured plastic sheet. In some examples, the substrate includes glass. The method for manufacturing the decorated substrate includes creating a mask on the surface of the substrate according to the pattern of the texture layer, and etching the substrate. The etching effect is stronger in thinner portions of the mask and weaker in thicker portions of the mask, thereby forming a textured pattern on the surface of the substrate to obtain a decorated substrate. The resulting decorated substrate is textured glass. The method for producing a decorated substrate provided by the present disclosure has mature technology, a simple process, and high product stability, which can improve product yield and is suitable for mass production.

[0046] See FIG. 18B, which is a schematic structural diagram of a cover plate 110 according to an example of the present disclosure. The present disclosure also provides a cover plate 110. The cover plate 110 includes a decorative substrate 100 according to the present disclosure and a base 120. The base is used to enhance the structural strength of the cover plate. The base can be made of one or more of plastic, metal, ceramic, and glass. The cover plate exhibits a three-dimensional woven grid pattern effect similar to fabric, thereby significantly improving aesthetics and enhancing market prospects. In some examples of the present disclosure, the cover plate 110 can be used for the housing of a communication device. The unique appearance of the cover plate can improve product recognition.

[0047] The present disclosure also provides an electronic device, which includes the cover plate described above. See FIG. 18C , which is a schematic structural diagram of an electronic device 200 provided by an example of the present disclosure. The electronic device 200 includes a display component 201 and a housing 202, and the housing 202 includes the cover plate of the present disclosure. In the example of the present disclosure, the electronic device may be, for example, a mobile phone, a computer, a watch, a USB flash drive, an electronic cigarette, a wearable device, a digital camera, or the like.

[0048] The following provides further examples of the present disclosure through specific examples. [Example]

[0049] The decorated substrate and its manufacturing method include: a grayscale image of a texture pattern is designed, the grayscale image is imported into a control computer, and the decorated substrate is obtained through a process such as laser direct writing by identifying the grayscale values ​​on the grayscale image.

[0050] Please refer to Fig. 19, which is a top view of a decorative substrate provided by Example 1 of the present disclosure. In Fig. 19, multiple lattice grids are arranged on the surface of the decorative substrate. The area surrounded by a white frame is one lattice grid. One lattice grid includes four lattice units arranged in a ring shape around a center point and connected to each other. Each lattice unit includes multiple band-like protrusions extending in parallel to each other, and the multiple band-like protrusions are arranged continuously in the radial direction of the circle centered on the center point.

[0051] Please refer to Fig. 20, which is a schematic diagram of the grid pattern effect of the decorative substrate provided by Example 1 of the present disclosure. As can be seen from Fig. 20, there is a certain brightness gradient within the lattice grid, and the grid pattern effect can be achieved by arranging multiple lattice grids. Please refer to Fig. 21, which is a schematic diagram of the woven effect of the decorative substrate provided by Example 1 of the present disclosure. As can be seen from Fig. 21, the decorative substrate of the present disclosure can express a three-dimensional woven grid pattern effect on a macroscopic scale. [Example]

[0052] The decorated substrate and its manufacturing method include: a grayscale image of a texture pattern is designed, the grayscale image is imported into a control computer, and the decorated substrate is obtained through a process such as laser direct writing by identifying the grayscale values ​​on the grayscale image.

[0053] Please refer to Fig. 22, which is a top view of a decorative substrate provided by Example 2 of the present disclosure. In Fig. 22, multiple lattice grids are arranged on the surface of the decorative substrate. The area surrounded by a black frame is one lattice grid. One lattice grid includes three lattice units arranged in a ring shape around a center point and connected to each other. Each lattice unit includes multiple band-like protrusions extending in parallel to each other, and the multiple band-like protrusions are arranged continuously in the radial direction of the circle centered on the center point.

[0054] Please refer to Fig. 23, which is a schematic diagram of the grid pattern effect of the decorative substrate provided by Example 2 of the present disclosure. As can be seen from Fig. 23, there is a certain brightness gradient within the lattice grid, and the grid pattern effect can be achieved by arranging multiple lattice grids. Please refer to Fig. 24, which is a schematic diagram of the woven effect of the decorative substrate provided by Example 2 of the present disclosure. As can be seen from Fig. 24, the decorative substrate of the present disclosure can express a three-dimensional woven grid pattern effect on a macroscopic scale. [Example]

[0055] The decorated substrate and its manufacturing method include: a grayscale image of a texture pattern is designed, the grayscale image is imported into a control computer, and the decorated substrate is obtained through a process such as laser direct writing by identifying the grayscale values ​​on the grayscale image.

[0056] Please refer to Fig. 25, which is a top view of a decorative substrate provided by Example 3 of the present disclosure. In Fig. 25, a plurality of lattice grids are arranged on the surface of the decorative substrate. The area surrounded by a black frame is one lattice grid. One lattice grid includes five lattice units arranged in a ring shape around a center point and joined together. Each lattice unit includes a plurality of band-like protrusions extending in parallel to each other, and the plurality of band-like protrusions are arranged continuously in the radial direction of the circle centered on the center point.

[0057] Please refer to Fig. 26, which is a schematic diagram of a grid pattern effect of the decorative substrate provided by Example 3 of the present disclosure. As can be seen from Fig. 26, there is a certain brightness gradient within the grid cell, and the grid pattern effect can be achieved by arranging multiple grids. Please refer to Fig. 27, which is a schematic diagram of a woven effect of the decorative substrate provided by Example 3 of the present disclosure. As can be seen from Fig. 27, the decorative substrate of the present disclosure can express a three-dimensional woven grid pattern effect on a macroscopic scale. [Example]

[0058] The decorated substrate and its manufacturing method include: a grayscale image of a texture pattern is designed, the grayscale image is imported into a control computer, and the decorated substrate is obtained through a process such as laser direct writing by identifying the grayscale values ​​on the grayscale image.

[0059] Please refer to Fig. 28, which is a top view of a decorative substrate provided by Example 4 of the present disclosure. In Fig. 28, multiple lattice grids are arranged on the surface of the decorative substrate. The area surrounded by a white frame is one lattice cell. One lattice grid includes four lattice units arranged in a ring shape around a center point, with a gap between the lattice units. Each lattice unit includes multiple band-like protrusions extending in parallel to each other, and the multiple band-like protrusions are arranged continuously in the radial direction of the circle centered on the center point.

[0060] Please refer to Fig. 29, which is a schematic diagram of the grid pattern effect of the decorative substrate provided by Example 4 of the present disclosure. As can be seen from Fig. 29, there is a certain brightness gradient within the grid cell, and the grid pattern effect can be achieved by arranging multiple grids. Please refer to Fig. 30, which is a schematic diagram of the grid pattern effect of the decorative substrate provided by Example 4 of the present disclosure. As can be seen from Fig. 30, the decorative substrate of the present disclosure can express a three-dimensional textured grid pattern effect on a macroscopic scale.

[0061] The above-described example merely represents one example of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the patent scope of the present invention. It should be noted that a person skilled in the art can make some modifications and improvements without departing from the design concept of the present disclosure, and all of these will fall within the protection scope of the present invention. Therefore, the patent protection scope of the present invention should be subject to the appended claims.

Claims

1. A decorative substrate (100) comprising a substrate (20) and a textured layer (10) disposed on the substrate (20), wherein a plurality of lattice grids (11) are disposed on a surface of the textured layer (10) remote from the substrate (20), at least two of the lattice grids (11) each comprising a plurality of lattice units (12) arranged in a ring shape around a central point (P), the lattice units (12) each comprising a plurality of band-like protrusions (13), the plurality of band-like protrusions (13) being continuously arranged in a radial direction of a circle centered on the central point (P); The decorative substrate (100) has a lattice grid (11) in which the strip-shaped projections (13) have a first surface (131) close to the center point (P), a second surface (132) away from the center point (P), and a third surface (133) connected to the first surface (131) and the second surface (132), the third surface (133) being in contact with the substrate (20), and the angle (α) formed by the first surface (131) and the third surface (133) being less than or equal to the angle (β) formed by the second surface (132) and the third surface (133).

2. 2. The decorative substrate (100) according to claim 1, wherein in the lattice grid (11), adjacent lattice units (12) have a common edge (14), and the plurality of lattice units (12) intersect at a central point (P).

3. 2. The decorative substrate (100) according to claim 1, wherein the lattice grid (11) has gaps between adjacent lattice units (12), and the distance from the lattice unit (12) to the center point (P) is 100 μm or less.

4. 2. The decorative substrate (100) according to claim 1, wherein in the lattice grid (11), a gap is formed between adjacent lattice units (12), and the distance (d0) from the lattice unit (12) to the center point (P) is 1 / 5 or less of the diameter (Φ) of the circumscribing circle of the lattice grid (11).

5. Decorative substrate (100) according to any one of claims 1 to 4, wherein the angle (α) formed by the first surface (131) and the third surface (133) is between 11° and 40°.

6. Decorative substrate according to any one of claims 1 to 4, wherein the angle (β) formed by the second surface (132) and the third surface (133) is between 80° and 100°.

7. The decorative substrate (100) according to any one of claims 1 to 4, wherein in the lattice grid (11), adjacent lattice units (12) are mirror-symmetrical along an axis of symmetry (A), and the angle (γ) formed between the extension direction of each of the plurality of strip-shaped protrusions (13) and the axis of symmetry (A) is 20° to 70°.

8. A decorative substrate (100) according to any one of claims 1 to 4, wherein the ratio of the height of the band-like protrusion (13) in a first direction (X) to the width of the band-like protrusion (13) in a second direction (Y) is 0.05 to 0.4, the first direction (X) is perpendicular to the plane in which the substrate (20) is located, and the second direction (Y) is perpendicular to the extension direction of the band-like protrusion (13) and the first direction (X).

9. 5. A decorative substrate (100) according to any one of claims 1 to 4, wherein in the lattice unit (12), the aspect ratio of the plurality of band-like protrusions (13) gradually decreases in a direction away from the center point (P), the aspect ratio being the ratio between the height of the band-like protrusions (13) in a first direction (X) and the width of the band-like protrusions (13) in a second direction (Y), the first direction (X) being perpendicular to the plane in which the substrate (20) is located, and the second direction (Y) being perpendicular to the extension direction of the band-like protrusions (13) and the first direction (X).

10. A decorative substrate (100) according to any one of claims 1 to 4, wherein in the lattice unit (12), the difference in aspect ratio between adjacent band-like protrusions (13) is 0.1 or less, the aspect ratio being the ratio between the height of the band-like protrusions (13) in a first direction (X) and the width of the band-like protrusions (13) in a second direction (Y), the first direction (X) being perpendicular to the plane in which the substrate (20) is located, and the second direction (Y) being perpendicular to the extension direction of the band-like protrusions (13) and the first direction (X).

11. A decorative substrate (100) according to any one of claims 1 to 4, wherein the height of the band-shaped protrusions (13) in a first direction (X) is 0.1 μm to 20 μm, the width of the band-shaped protrusions (13) in a second direction (Y) is 1 μm to 150 μm, the first direction (X) is perpendicular to the plane in which the substrate (20) is located, and the second direction (Y) is perpendicular to the extension direction of the band-shaped protrusions (13) and the first direction (X).

12. A decorative substrate (100) according to any one of claims 1 to 4, wherein the length in the extension direction of the band-shaped protrusion (13) having the longest extension length within the lattice unit (12) is 100 μm to 3000 μm.

13. 5. The decorative substrate (100) according to claim 1, wherein in the textured layer (10), adjacent lattice grids (11) are mirror-symmetric along an axis of symmetry (A), and the distance from the lattice grid (11) to the axis of symmetry (A) is 1 / 10 or less of the diameter (φ) of the circumscribing circle of the lattice grid (11), or the distance from the lattice grid (11) to the axis of symmetry (A) is 50 μm or less.

14. A decorative substrate (100) according to any one of claims 1 to 4, wherein the shape of the trajectory of the band-like projection (13) in a first direction comprises one or more of a straight line portion and an arc portion, and the first direction is perpendicular to both the substrate (20) and the extension direction of the band-like projection (13).

15. The decorative substrate (100) according to any one of claims 1 to 4, wherein the shape of the strip-shaped projection (13) in its extension direction comprises one or more of a straight shape, a saddle shape, a zigzag shape, and a circular arc shape.

16. The decorative substrate (100) according to any one of claims 1 to 4, further comprising a modified layer (30), the modified layer comprising one or more of a coloring layer, a matte layer, and a gloss layer, the modified layer being disposed on the surface of the texture layer (10) and / or the surface of the substrate (20).

17. A decorative substrate (100) according to any one of claims 1 to 4, wherein, within the same lattice unit (12), the length of the plurality of band-like protrusions (13) in the extension direction of the band-like protrusions (13) gradually increases in the direction away from the center point (P), or, within the same lattice unit (12), the length of the plurality of band-like protrusions (13) in the extension direction of the band-like protrusions (13) first gradually increases and then gradually decreases in the direction away from the center point (P).

18. A method for manufacturing a decorative substrate (100), comprising the steps of: a method for manufacturing the texture layer (10) on a surface of a substrate (20) to obtain the decorative substrate (100), the method comprising: forming a texture layer (10) on the surface of the substrate (20); the method for manufacturing the texture layer (10) comprising one or more of transfer printing, etching, and hot press molding; a plurality of lattice grids (11) arranged on a surface of the texture layer (10) away from the substrate (20); at least two or more of the lattice grids (11) comprising a plurality of lattice units (12) arranged in a ring shape around a central point (P); the lattice units (12) comprising a plurality of band-shaped protrusions (13), the plurality of band-shaped protrusions (13) being arranged continuously in a radial direction of a circle centered on the central point (P); A method for manufacturing a decorative substrate (100), wherein the strip-shaped projections (13) of the lattice grid (11) have a first surface (131) close to the center point (P), a second surface (132) away from the center point (P), and a third surface (133) connected to the first surface (131) and the second surface (132), the third surface (133) being in contact with the substrate (20), and the angle (α) formed by the first surface (131) and the third surface (133) being less than or equal to the angle (β) formed by the second surface (132) and the third surface (133).

19. A cover plate (110) comprising a decorative substrate (100) according to any one of claims 1 to 17 and a base (120), wherein the decorative substrate (100) is placed on the base (120).

20. An electronic device (200) comprising a cover plate (110) according to claim 19.

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