Appearance decorative part, method for manufacturing appearance decorative part, and electronic device

Abstract

An exterior decorative member (100), a method for manufacturing the exterior decorative member (100), and an electronic device. The exterior decorative member (100) has a textured surface (101), the textured surface (101) is divided into a plurality of partition units (110) arranged in a plurality of rows and columns, each partition unit (110) has a sub-texture (11), the included angle of the sub-texture (11) with respect to the row direction (x) is defined as a texture included angle (α), and the sub-textures (11) of the plurality of partition units (110) satisfy the following requirements: the texture included angles (α) of any two adjacent sub-textures (11) in the first row are different, and the texture included angles (α) of the plurality of sub-textures (11) in each column form an arithmetic progression in the column direction (y).

Description

[Technical Field]

[0001] This disclosure claims priority to Chinese Patent Application No. 202211639020.4, filed on December 20, 2022, entitled "Appearance Decorative Part, Method for Manufacturing Appearance Decorative Part, and Electronic Device," the entire contents of which are incorporated herein by reference.

[0002] Technical Field The present disclosure relates to the field of exterior decoration, and in particular to an exterior decorative member, a method for manufacturing an exterior decorative member, and an electronic device. [Background technology]

[0003] With the advancement of science and technology, electronic products such as smartphones and tablets play an increasingly important role in consumers' daily lives, and their usage is increasing. In addition to meeting the functional requirements of electronic products, product design has also become an important factor in consumer purchase decisions. Currently, the decoration of electronic products is usually limited to variations in material and color, resulting in a single decorative effect and lacking dynamic effects. Summary of the Invention [Means for solving the problem]

[0004] The purpose of the present disclosure is to provide an exterior decorative member, a method for manufacturing an exterior decorative member, and an electronic device to solve the problem that current electronic products have a single decorative effect and lack dynamic effects.

[0005] To achieve the objectives of the present disclosure, the present disclosure provides the following technical solutions:

[0006] According to a first aspect, the present disclosure provides an exterior decorative member, the exterior decorative member including a textured surface, the textured surface being divided into a plurality of partition units arranged in a plurality of rows and columns, each of the partition units having a sub-texture, the included angle of the sub-texture with respect to the row direction being defined as a texture angle, and the sub-textures of the plurality of partition units satisfy the following requirements: the texture angles of any two adjacent sub-textures in the first row are different, and the texture angles of the plurality of sub-textures in each column form an arithmetic progression along the column direction.

[0007] In one embodiment, the difference in texture angle between any two adjacent sub-textures in the first row is 5° or more.

[0008] In one embodiment, the absolute value of the common difference of the arithmetic progression formed by the texture angles of the sub-textures in each column along the column direction is greater than 0° and less than or equal to 60°.

[0009] In one embodiment, all sub-textures in at least two columns form a column texture group along the column direction, and the texture angles of all sub-textures in the column texture group in the same column have a plurality of tolerances along the column direction.

[0010] In one embodiment, all sub-textures in at least two columns form a row texture group along the row direction, and the texture angles of all sub-textures in the row texture group in the same row have one or more tolerances along the row direction.

[0011] In one embodiment, the subtextures of the multiple partition units are rotationally symmetric.

[0012] In one embodiment, the structures of at least some of the sub-textures of the plurality of partition units are different, or any two of the sub-textures of the plurality of partition units have the same structure.

[0013] In one embodiment, the compartment units have the same shape and size, or the compartment units have the same shape and different sizes.

[0014] In one embodiment, the sub-texture comprises linear structures that protrude from the texture surface.

[0015] In one embodiment, the width of the linear structure in the normal direction to the extension path of the linear structure is 1 μm to 200 μm, and the height of the linear structure in the direction perpendicular to the height of the textured surface is 1 μm to 15 μm.

[0016] In one embodiment, the width of the linear structure in the normal direction of the extension path of the linear structure is 10 μm to 100 μm, and the height of the linear structure in the height direction perpendicular to the textured surface is 3 μm to 8 μm.

[0017] In one embodiment, the cross-sectional shape of the linear structure is one of a circular arc, a triangular shape, a trapezoidal shape, and a saddle shape.

[0018] In one embodiment, each of the sub-textures has a chamfer.

[0019] According to a second aspect, the present disclosure provides a method for manufacturing an exterior decorative member, the method including: manufacturing a photolithography master die having a sub-texture; using the photolithography master die to manufacture a PC mold or a GDM mold; using the PC mold to copy the sub-texture onto a PET explosion-proof film or a PC+PMMA composite board to form an exterior decorative member; or using the GDM mold to copy the sub-texture onto glass to form an exterior decorative member.

[0020] The photolithography master die has a plurality of division units, each of which has a sub-texture.

[0021] The included angle of the sub-texture with respect to the row direction is defined as the texture angle, and the sub-textures of multiple partition units satisfy the following requirements:

[0022] The texture angles of any two adjacent sub-textures in the first row are different, and the texture angles of the multiple sub-textures in each column form an arithmetic progression along the column direction.

[0023] According to a third aspect, the present disclosure further provides an electronic device, the electronic device including the exterior decorative member of any of the various embodiments of the first aspect.

[0024] In the exterior decorative member provided in the present disclosure, the texture surface is divided into a plurality of partition units arranged in a plurality of rows and columns, each of which has a sub-texture, and the sub-textures satisfy the conditions that the texture angles of any two adjacent sub-textures in the first row are different, and the texture angles of the plurality of sub-textures in each column form an arithmetic progression along the column direction, so that the plurality of sub-textures form a regular arrangement, and when light from an external light source is irradiated onto the product, it can reflect and present regular light and shadow effects, and at the same time, the light and shadow can change dynamically with changes in the relative position to the light source, thereby achieving rich decorative and dynamic effects.

[0025] In order to more clearly describe the embodiments of the present disclosure or the technical solutions of the prior art, the drawings that need to be used in the description of the embodiments or the prior art are briefly introduced below, and the drawings in the following description are only some embodiments of the present disclosure, and it is obvious to those skilled in the art that other drawings can be obtained from these drawings without creative efforts. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 2 is a schematic diagram of texture segmentation according to one embodiment. [Figure 2]FIG. 1B is a schematic diagram of a subtexture of a row of partition units according to one embodiment. [Figure 3] 10A-10C are schematic diagrams of sub-textures of four rows of partition units according to different embodiments; [Figure 4] FIG. 1B is a schematic diagram of a subtexture of a row of partition units according to one embodiment. [Figure 5] FIG. 1B is a schematic diagram of sub-textures of multiple rows and columns of multiple partition units, according to one embodiment. [Figure 6a] FIG. 1 is a schematic diagram of a sub-texture, according to some embodiments. [Figure 6b] FIG. 1 is a schematic diagram of a sub-texture, according to some embodiments. [Figure 6c] FIG. 1 is a schematic diagram of a sub-texture, according to some embodiments. [Figure 6d] FIG. 1 is a schematic diagram of a sub-texture, according to some embodiments. [Figure 6e] FIG. 1 is a schematic diagram of a sub-texture, according to some embodiments. [Figure 7] FIG. 1B is a schematic diagram of a sub-texture of two rows and two columns of partition units, according to one embodiment. [Figure 8] FIG. 10 is a schematic diagram of two rows and two columns of sub-textures of a partition unit according to another embodiment. [Figure 9] FIG. 1B is a schematic diagram of sub-textures of multiple rows and columns of multiple partition units, according to one embodiment. [Figure 10a] FIG. 10 is a schematic diagram of sub-textures of multiple rows and columns of multiple partition units, according to some embodiments. [Figure 10b] FIG. 10 is a schematic diagram of sub-textures of multiple rows and columns of multiple partition units, according to some embodiments. [Figure 10c] FIG. 10 is a schematic diagram of sub-textures of multiple rows and columns of multiple partition units, according to some embodiments. [Figure 10d]FIG. 10 is a schematic diagram of sub-textures of multiple rows and columns of multiple partition units, according to some embodiments. [Figure 10e] FIG. 10 is a schematic diagram of sub-textures of multiple rows and columns of multiple partition units, according to some embodiments. [Figure 11] FIG. 1 is a texture rendering of a mobile phone back cover, according to one embodiment. [Explanation of symbols]

[0027] 100 exterior decorative member, 101 texture surface, 11 sub-texture, 110 partition unit, 111 column texture group, 111a first column texture, 111b second column texture, 112 row texture group, 112a first row texture, 112b second row texture, 10 substrate, 20 linear structure, α texture angle DETAILED DESCRIPTION OF THE INVENTION

[0028] Hereinafter, the technical solutions in the embodiments of the present disclosure will be clearly and completely described with reference to the drawings of the embodiments of the present disclosure, and it is clear that the described embodiments are only a part of the embodiments of the present disclosure, and are not all of the embodiments. According to the embodiments of the present disclosure, all other examples obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] It should be noted that when one component is referred to as "anchored" to another component, it may be directly on the other component, or there may be intermediate components present. When one component is considered to be "connected" to another component, it may be directly connected to the other component, or there may be intermediate components present at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] Some embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The following embodiments and features within the embodiments may be combined with each other without contradiction.

[0032] In one embodiment of the present disclosure, an exterior decorative member is provided, which includes a textured surface and a non-textured surface, where the textured surface has a specific texture, and the non-textured surface has either no texture or a texture, but the texture is not limited thereto. The purpose of the present disclosure is to set a specific texture for the textured surface. It will be understood that the textured surface is typically a surface that can be seen from the outside, while the non-textured surface may be a hidden, unobservable surface. The exterior decorative member can be manufactured by a process including texture division and texture manufacturing. The exterior decorative member can be, but is not limited to, a mobile phone case, a mobile phone back cover, a mobile phone film, or any other feasible product.

[0033] Referring to FIG. 1, in the process of texture division, the texture surface is divided into a plurality of partition units arranged in a plurality of rows and columns, so that the texture surface is divided into a plurality of regularly arranged partition units arranged in a plurality of rows and columns by the texture division.

[0034] Specifically, the exterior decorative member can be a PC (polycarbonate) explosion-proof film, a PC + PMMA (polymer methacrylate) composite board, glass, etc. Depending on the different exterior decorative member, the textured surface can be, but is not limited to, a PC explosion-proof film surface, a PC + PMMA composite board surface, a glass surface, etc.

[0035] The texture surface can be, but is not limited to, flat or curved. When the texture surface is curved, the texture division can be performed on a plane and then projected onto the texture surface to form the texture division on the curved surface.

[0036] When performing texture division, an xy coordinate system can be established with the x direction as the row direction and the y direction as the column direction. Using the zero point of the xy coordinate system as a reference, a number of lines are drawn at intervals along the row direction and the column direction, respectively, and the line segments in the row direction and the line segments in the column direction intersect and intersect with each other to form a number of partition units arranged in a number of rows and columns, each of which is rectangular. When the separation distances of the line segments in the row direction and the column direction are equal, the formed partition unit is a square. For convenience of explanation, from bottom to top and left to right, the partition units are arranged as x1y1, x2y1, x1y2, ...x, with a total of m columns and n rows. m y n The partition unit includes m×n partition units, where m and n are positive integers greater than 2.

[0037] In one embodiment, the multiple partition units may be formed by drawing non-straight lines in an xy coordinate system such that the partition units are non-rectangular, for example, the partition units may be circular, triangular, hexagonal, etc., but are not limited thereto.

[0038] In one embodiment, the row and column directions may be interchanged: as shown in Figure 1, if the viewing angle is rotated by 90°, the row direction may be the y direction and the column direction may be the x direction.

[0039] The size of the partition unit can be set as needed. In one embodiment, the side length (diameter) of the partition unit can be 0.01 mm to 1 mm, specifically, 0.01 mm, 0.05 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc., but is not limited thereto. To improve the fineness of the texture and reduce graininess, the side length (diameter) of the partition unit can be 0.01 mm to 0.1 mm, specifically, 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, etc., but is not limited thereto. The shape of the partition unit in the embodiment shown in FIG. 1 is square, and the side length is 0.05 mm.

[0040] It should be understood that the size of the partition unit is related to the size of the sub-texture formed within the partition unit, and the size and density of the distribution of the sub-texture determine the coarseness or fineness of the visual perception. Generally speaking, the denser the partition unit is and the smaller its size, the more delicate the visual perception of the formed texture, and vice versa. From the perspective of manufacturing costs, the denser the texture is and the smaller its size, the greater the difficulty and cost of manufacturing. Therefore, an appropriate size of the partition unit can be selected to balance visual aesthetics and manufacturing costs.

[0041] In one embodiment, the texture division process may be performed in an electronic computer by a computer program, and texture surface data may be input into the computer program, so that the data in the computer program can correspond to the texture surface of an actual object when the texture surface manufacturing process is subsequently performed. The use of an electronic computer can improve work efficiency. In one embodiment, the texture division process can also be performed directly on the surface of the object (i.e., the texture surface).

[0042] After performing the texture division process, the required texture can be produced with multiple rows and multiple columns of obtained partition units, respectively, and through texture division, the texture of each partition unit can be designed so that the entire texture of the multiple partition units presents unique light and shadow effects.

[0043] Referring to FIG. 5, an exterior decorative member 100 has a textured surface 101. The textured surface 101 is divided into a plurality of partition units 110 arranged in a plurality of rows and columns. Each of the partition units 110 has a sub-texture 11. In the process of manufacturing the textured surface 101, the sub-texture 11 is manufactured in each of the partition units 110 so that each of the partition units 110 has its own sub-texture 11. In the diagram of FIG. 5, the partition units 110 and the sub-texture 11 are shown in white letters on a black background, and the partition units 110 are shown with a black background and the sub-texture 11 is shown with a white band. Partition units 110 and sub-textures 11 with similar patterns in other drawings are the same as those in FIG. 5, and their description will be omitted.

[0044] In one embodiment, a sub-texture 11 is formed in each of a plurality of partition units 110, and each partition unit 110 has at least one sub-texture 11. As shown in Figure 5, one sub-texture 11 is arranged in each partition unit 110. In other embodiments, two or more sub-textures may be arranged in each partition unit 110.

[0045] During the manufacturing process, the sub-textures 11 can be manufactured simultaneously in all partition units 110, or the sub-textures 11 can be manufactured one by one in multiple partition units 110, or the sub-textures 11 can be manufactured synchronously in rows or columns, but are not limited thereto. In an embodiment of the present disclosure, the specific shape and manufacturing process of the sub-textures 11 are not limited. Specifically, the sub-textures 11 can be linear, polygonal, arc-shaped, etc.

[0046] In the texture manufacturing process, the included angle of the sub-texture 11 with respect to the row direction (referring to the x direction in Figure 1, the horizontal direction, i.e., the width direction, shown in Figure 5) is defined as the texture angle α, and the sub-textures 11 of multiple partition units 110 satisfy the following conditions 1 and 2.

[0047] Condition 1: The texture angles α of any two adjacent sub-textures 11 on the first row are different.

[0048] Condition 2: The texture angles α of the multiple sub-textures 11 in each column form an arithmetic progression along the column direction y.

[0049] 1, 2, and 5, the diagram in FIG. 2 is a diagram of m partition units 110 in the first row from the bottom in FIG. 5 going from bottom to top.

[0050] Referring to Figures 2 and 5, the subtextures 11 in the multiple partition units 110 in the first row from the bottom of Figure 5 satisfy the above-mentioned condition 1, i.e., the texture angles α of any two adjacent subtextures 11 among the subtextures 11 in the m partition units 110 in the first row are different.

[0051] It will be understood that the subtexture 11 itself has a shape, and the texture angle α is the angle between the overall extension direction of the subtexture 11 and the row direction. For example, when the subtexture 11 has a linear shape, the texture angle α is the angle between the line and the row direction, and when the subtexture 11 has a non-linear shape such as a broken line or a circular arc line, the texture angle α may be the angle between the line connecting two end points of the non-linear shape such as a broken line or a circular arc line and the row direction.

[0052] In one embodiment, referring to FIG. 1 and FIG. 5, the first row of the plurality of compartment units may be, but is not limited to, the first row from the bottom or the first row from the top.

[0053] Referring to Figure 3, Figure 3 shows images of sub-textures of partition units in the column direction in four embodiments, and condition 2 is met, that is, the texture angles of multiple sub-textures in each column form an arithmetic progression along the column direction.

[0054] 3, the structures of partition units and sub-textures therein in four columns of different embodiments are shown from left to right. In the four embodiments, from bottom to top, the texture angles of the sub-textures in the first row from the bottom are the same, which is 45°. From left to right, the tolerance of the arithmetic progression of the texture angles of the multiple sub-textures in the first column is 22.5°, the tolerance of the arithmetic progression of the texture angles of the multiple sub-textures in the second column is 11.25°, the tolerance of the arithmetic progression of the texture angles of the multiple sub-textures in the third column is 2°, and the tolerance of the arithmetic progression of the texture angles of the multiple sub-textures in the fourth column is 45°. That is, for sub-textures with the same texture angle in the first row, after being rotated and positioned with different tolerances of the arithmetic progression, the overall texture structures obtained in each column are different.

[0055] It can be seen that by performing an arithmetic progression with different tolerances on sub-textures with the same texture angle, the shape of the entire column obtained will be different. In addition, referring to Figure 5, on the one hand, the texture angle α of each sub-texture 11 in the first row from the bottom is different, and at the same time, arithmetic progression is performed with different tolerances for each column, the resulting shape will have a certain regularity, with no row being completely the same as any other row, and no column being completely the same as any other column, resulting in a specific texture pattern being formed.

[0056] After texture is formed on the textured surface of the exterior decorative component, each sub-texture forms a reflective grid. Because the multiple sub-textures satisfy the above-mentioned conditions 1 and 2, the entire multiple sub-textures form a regular arrangement. When light from an external light source is irradiated onto the product, regular light and shadow effects are reflected and presented, creating a rich visual effect. At the same time, dynamic effects can be achieved by dynamically changing the light and shadow as the relative position of the product to the light source changes.

[0057] Therefore, in the exterior decorative member provided in the embodiment of the present disclosure, the texture surface is divided into a plurality of partition units arranged in a plurality of rows and columns, each of the partition units has a sub-texture, and the sub-textures satisfy the conditions that the texture angles of any two adjacent sub-textures in the first row are different, and the texture angles of the plurality of sub-textures in each column form an arithmetic progression along the column direction, so that the plurality of sub-textures form a regular arrangement, and when light from an external light source is irradiated onto the product, it can reflect and present regular light and shadow effects, and at the same time, the light and shadow can change dynamically with changes in the relative position to the light source, so that the exterior decorative member provided in the embodiment of the present disclosure can achieve rich decorative and dynamic effects.

[0058] In one embodiment, the difference between the texture angles of any two adjacent sub-textures in the first row is 5° or more, and specifically, the difference may be, but is not limited to, 5°, 8°, 10°, 15°, 20°, etc. Combining Figures 1 and 2, the first row is arranged with m partition units, each of which has a sub-texture, and each of the sub-textures has a texture angle with the row direction (i.e., the x direction). The sub-textures in the first row are configured as the reference for the other sub-textures, and the difference between the texture angles of any two adjacent sub-textures in the first row is 5° or more. As a result, after the angle change of the arithmetic progression, the angle difference between the texture angles of the sub-textures in adjacent columns is not too small, and there is little change in the visual effect, and a clearly different visual effect can be obtained to achieve the required decorative and dynamic effects.

[0059] The tolerances of the arithmetic progression of multiple columns of sub-textures may be equal or unequal. When the tolerances of the arithmetic progression of multiple columns of sub-textures are unequal, in some rows (other than the first row) after arranging the arithmetic progression, the texture angles of two adjacent sub-textures may be equal, i.e., the difference between the texture angles is 0. In some rows (other than the first row), it is also possible, but not limited to, that the angle between two adjacent sub-textures is less than 5°.

[0060] In one embodiment, the tolerance of the arithmetic progression formed by the texture angles of multiple sub-textures in each column along the column direction can be a positive or negative number, and the absolute value of the tolerance can be greater than 0° and less than or equal to 60°, and the absolute value of the tolerance can be, but is not limited to, 1°, 5°, 10°, 15°, 30°, 45°, 60°, etc. The absolute value of the tolerance is set within this range, so that the texture angles of any two adjacent sub-textures in the same column do not change too much, and the transition overall is not too abrupt, resulting in a good visual effect.

[0061] In one embodiment, all subtextures 11 in at least two columns form a column texture group 111 along the column direction, and the texture angles of all subtextures 11 in the column texture group 111 in the same column have multiple tolerances along the column direction. Referring to FIG. 4 , the column texture group 111 includes a first column texture 111a and a second column texture 111b along the column direction. Specifically, in the column texture group 111 in the same column, the texture angles of the multiple subtextures 11 (e.g., the first column texture 111a) from the first row (the first row from the bottom) to a certain row in the middle may be arranged with a tolerance of 18°, and the texture angles of the multiple subtextures 11 from a certain row in the middle to a certain row at the top (which may be the last row, i.e., the first row from the top, e.g., the second column texture 111b) may be arranged with another tolerance of −10°. That is, the texture angles of all subtextures 11 in the column texture group 111 in the same column may be arranged with a certain tolerance first, and then with another tolerance.

[0062] In one embodiment, all subtextures 11 in at least two columns form a row texture group 112 along the row direction, and the texture angles α of all subtextures 11 in the row texture group in the same row have one or more tolerances along the row direction. Referring to FIG. 5 , exemplarily, in this embodiment, the row texture group 112 includes a first row texture 112a and a second row texture 112b along the row direction. Specifically, in the row texture group 112 in the same row, the texture angles α of the subtextures 11 (e.g., the first row texture 112a) from the first column (the first column from the left) to a central column may be arranged with a first tolerance, and the texture angles α of the subtextures 11 from the central column to a column closer to the right (which may be the last column, i.e., the first column from the right, e.g., the second row texture 112b) may be arranged with another second first tolerance, and the first tolerance is different from the second tolerance. In some embodiments, the first tolerance is the same as the second tolerance. That is, the texture angles α of all sub-textures 11 within a row texture group 112 in the same row may be first spaced with one tolerance and then spaced with another tolerance.

[0063] It is understood that the texture angles of all sub-textures 11 in a column texture group 111 in the same column may have a tolerance of more than one, and the texture angles of all sub-textures 11 in a row texture group 112 in the same row may have a tolerance of more than one.

[0064] Unlike the embodiment shown in FIG. 4, in the four embodiments shown in FIG. 3, the texture angle tolerances of all sub-textures within a column are the same.

[0065] This arrangement can provide a richer variety of texture angles and enhance the decorative and dynamic effects.

[0066] 5, in one embodiment, the subtextures 11 of the multiple partition units 110 are rotationally symmetric. Specifically, the shapes, sizes, etc. of the subtextures 11 in the multiple partition units 110 are the same, and the only difference is that the texture angles α are different. Therefore, when the subtextures 11 are rotated so that the texture angles α are the same, the subtextures 11 can completely overlap each other, and therefore the subtextures 11 are rotationally symmetric. This arrangement simplifies the shapes of the multiple subtextures 11 and facilitates manufacturing.

[0067] It should be understood that the subtextures 11 in all partition units 110 may be rotationally symmetric, the subtextures 11 in some partition units 110 may be rotationally symmetric, and the subtextures 11 in other partition units 110 may not be rotationally symmetric.

[0068] In one embodiment, the partition units 110 may have the same shape but different sizes, and the sub-textures 11 may only partially overlap rather than completely overlap after rotation.

[0069] In one embodiment, referring to FIGS. 5 and 6a-6e, a sub-texture is fabricated in each of the partition units 110 respectively, which includes:

[0070] The linear structures 20 are fabricated in the partition unit 110, and the linear structures protrude from the textured surface 101 to form sub-textures 11, and the linear structures 20 extend along straight lines. That is, the sub-textures 11 are linear structures 20 extending along straight lines. The size of the linear structures 20 can be microns or even nanometers, and the size is so small that a single sub-texture 11 cannot be distinguished by the naked eye, and the combination of multiple sub-textures 11 can form rich visual effects.

[0071] Specifically, as shown in the side views (which may be cross-sectional views) of the sub-texture in one of the compartment units in Figures 6a to 6e, the linear structures 20 of the sub-texture are formed on a substrate 10. The substrate 10 is an exterior decorative member, such as, but not limited to, a PC explosion-proof film, a PC+PMMA composite board, glass, etc. The material of the linear structures 20 is the same as that of the substrate 10, and the linear structures 20 and the substrate 10 may be an integrated structure in which the linear structures 20 and the substrate 10 are integrally molded. Alternatively, the substrate 10 may be prepared first, and then the linear structures 20 may be formed on the substrate 10 by embossing, machining, etc.

[0072] The linear structure 20 extends along a straight line, forming a better reflective grating and achieving rich decorative and dynamic effects.

[0073] It will be understood that a large number of linear structures 20 can be formed on one substrate 10, each of the linear structures 20 being one sub-texture, and then an exterior decorative member having the required size can be obtained by cutting the substrate 10, and the exterior decorative member can be used as a mobile phone case, a mobile phone film, a mobile phone back cover, etc.

[0074] 6a, in one embodiment, the width W of the linear structure 20 in the normal direction to the extension path of the linear structure 20 is 1 μm to 200 μm, and the height H of the linear structure 20 in the direction perpendicular to the height of the textured surface 101 is 1 μm to 15 μm. Preferably, the width W of the linear structure 20 in the normal direction to the extension path of the linear structure 20 is 10 μm to 100 μm, and the height H of the linear structure 20 in the height direction perpendicular to the textured surface 101 is 3 μm to 8 μm. It should be noted that the term "width direction of the linear structure 20" refers to the normal direction of the linear structure 20 along the extension path of the linear structure 20, and the normal direction of the extension path is perpendicular to the tangential direction of the extension path.

[0075] According to currently achievable processing accuracy, the size of the linear structure 20 is made as small as possible in consideration of cost, so that the overall texture formed becomes finer and the graininess becomes weaker. Within the above-mentioned size range, the linear structure 20 is easy to manufacture, low cost, and has a good texture fineness and weak graininess.

[0076] Referring to FIGS. 6a to 6e, the cross-sectional shape of the linear structure 20 is one of a circular arc shape, a triangular shape, a trapezoidal shape, and a saddle shape.

[0077] Specifically, FIG. 6a shows an embodiment in which the cross-sectional shape of the linear structure 20 is an arc shape, which may be, but is not limited to, a semicircle or an arc of other radians.

[0078] FIG. 6b shows an embodiment in which the cross-sectional shape of the linear structure 20 is an isosceles triangle shape.

[0079] FIG. 6c shows an embodiment in which the cross-sectional shape of the linear structure 20 is generally triangular.

[0080] FIG. 6d shows an embodiment in which the cross-sectional shape of the linear structure 20 is an isosceles trapezoid, while in other embodiments the cross-sectional shape of the linear structure 20 may be a general trapezoid.

[0081] FIG. 6e shows an embodiment in which the cross-sectional shape of the linear structure 20 is saddle-shaped.

[0082] It should be understood that the cross-sectional shape of the linear structure 20 may be, but is not limited to, any other possible shape.

[0083] In other embodiments, multiple linear structures 20 may be arranged within one partition unit, but are not limited to one. Multiple linear structures 20 may be arranged parallel to one another or at least partially intersecting one another. Each linear structure 20 may have any of the shapes and structures 6a to 6c described above, but are not limited to these.

[0084] Referring to Figures 7 and 8, each of the sub-textures has a chamfer.

[0085] As shown in Figure 7, without chamfering, the corner contours of the sub-textures become sharp, and they interfere with each other at the intersection of two adjacent partition units, resulting in white spots and moiré defects.

[0086] As shown in Fig. 8, after the sub-texture in Fig. 7 is chamfered, the corner contours of the sub-texture become soft, and they hardly interfere with each other at the intersection of two adjacent partition units, resulting in few white spots and moiré defects.

[0087] It should be understood that chamfering refers to cutting an angle on the edge, corner, etc. of a shape to form a beveled or arcuate surface. The specific process of chamfering can be any feasible method, but is not limited thereto.

[0088] Referring to Figures 5 and 9, the non-chamfered texture in Figure 5 has sharp edges and corners and has a poor visual effect, while the chamfered texture in Figure 9 has no edges and corners and has a good visual effect.

[0089] The exterior decorative member in the embodiment of the present disclosure can achieve various decorative effects. Figures 10a to 10e show some embodiments of the exterior decorative member, whose texture presents the viewing angle effect of meteor light and shadow flow direction.

[0090] Specifically, referring to Figure 10a, the texture presents the effect of meteor light and shadow flowing vertically, in Figure 10b, the texture presents the effect of meteor light and shadow flowing in the diagonal direction, in Figure 10c, the texture presents the effect of meteor light and shadow flowing in an S line, in Figure 10d, the texture presents the effect of meteor light and shadow flowing in an arc line, and in Figure 10e, the texture presents the effect of meteor light and shadow flowing in a cross line.

[0091] It will be appreciated that the effect presentation of the texture can be designed as desired, but is not limited to such.

[0092] A method for manufacturing an exterior decorative member is also provided in one embodiment of the present disclosure, the method comprising: a photolithographic master die having a sub-texture is fabricated; The photolithography master die is used to produce a PC (polycarbonate) mold or a GDM (glass direct molding, direct decoration on glass) mold. The PC mold is used to copy the sub-texture onto PET (polyethylene terephthalate) explosion-proof film or PC + PMMA (polymethyl methacrylate) composite board to form exterior decorative parts. Alternatively, the GDM mold can be used to replicate sub-textures onto glass to form exterior decorative components. Includes.

[0093] The photolithography master die has a plurality of division units, each of which has a sub-texture.

[0094] The included angle of the sub-texture with respect to the row direction is defined as the texture angle, and the sub-textures of multiple partition units satisfy the following requirements:

[0095] The texture angles of any two adjacent sub-textures in the first row are different, and the texture angles of the multiple sub-textures in each column form an arithmetic progression along the column direction.The above-mentioned manufacturing method can form an exterior decorative member that satisfies the above-mentioned embodiments, thereby providing rich decorative and dynamic effects.

[0096] The following provides some embodiments of a specific manufacturing process for manufacturing a back cover of a mobile phone, and in the embodiments, the exterior decorative member is a back cover of a mobile phone.

[0097] In embodiment 1, the texture is designed, then a photolithography master die is produced by gray exposure, development, and other processes, then a PC mold is produced by anti-adhesive and UV adhesive transfer processes, and then the texture is copied onto a PET explosion-proof film by a UV (photopolymer exposure) transfer process to form a texture film. The texture film is then attached to a glass shell or a transparent injection-molded PC shell through coating, silkscreen printing, laser cutting, lamination, and other processes to form the back cover of the mobile phone.

[0098] In embodiment 2, the texture is designed, and then a photolithography master die is produced by gray exposure, development, and other processes. Then, a PC mold is produced by anti-adhesive, UV adhesive transfer, and other processes, and the characteristic structure is copied onto the PC+PMMA composite plate by UV transfer process. The composite plate is then processed by coating, silkscreen printing the bottom cover, high-temperature press molding, CNC (numerical control machine tool processing), and other processes to form the back cover of the mobile phone.

[0099] In embodiment 3, the texture is designed, then a photolithography master die is produced by gray exposure, development, and other processes, and then a GDM mold is produced by anti-adhesive, UV adhesive transfer, and other processes, and the characteristic structure is directly copied onto the glass by the GDM transfer process to form the back cover of the mobile phone. Among them, the GDM process refers to the process of directly decorating the texture and color on the glass cover plate, and the GDM mold is used for the GDM process.

[0100] In embodiments 1 to 3, the specific content of each step is not limited, and any feasible solution in the prior art can be used, and any other feasible steps can be included, all of which are not limited.

[0101] It should be understood that the textured mobile phone back cover can be manufactured by other processes and is not limited to embodiments 1 to 3. At the same time, the exterior decorative member of the embodiments of the present disclosure may be other products and is not limited to the mobile phone back cover.

[0102] Figure 11 shows the decorative effect of the mobile phone back cover under a point light source. When the mobile phone back cover and the point light source are in different relative positions, the texture on the mobile phone back cover changes, which has rich light and shadow effects and dynamic effects.

[0103] In one embodiment of the present disclosure, there is further provided an electronic device, which includes the exterior decorative member of the above-mentioned embodiment. The electronic device may be, but is not limited to, a smartphone, a tablet computer, etc.

[0104] In the electronic device provided in the embodiment of the present disclosure, by adopting the exterior decorative member of the embodiment of the present disclosure, within the exterior decorative member, the texture surface is divided into a plurality of partition units arranged in a plurality of rows and columns, each of the partition units has a sub-texture, and the sub-texture satisfies the condition that the texture angles of any two adjacent sub-textures in the first row are different, and the texture angles of the plurality of sub-textures in each column form an arithmetic progression along the column direction, so that the plurality of sub-textures form a regular arrangement, and when light from an external light source is irradiated onto the product, it can reflect and present regular light and shadow effects, and at the same time, the light and shadow can change dynamically with changes in the relative position to the light source, thereby realizing rich decorative and dynamic effects.

[0105] It should be noted that in describing the embodiments of the present disclosure, the orientation or positional relationship of indicators such as "center," "top," "bottom," "left," "right," "vertical," "horizontal," "inside," and "outside" is based on the orientation or positional relationship depicted in the drawings and is merely for convenience and simplification of the description of the present disclosure, and does not indicate or suggest that the referenced device or object must have a particular orientation or be constructed or operate in a particular orientation, and therefore cannot be understood as a limitation of the present disclosure.

[0106] The above disclosure is merely a preferred embodiment of the present disclosure, and of course, does not need to limit the scope of the present disclosure. It is understood that a person skilled in the art can understand all or part of the process of implementing the above embodiment, and can make equivalent modifications according to the claims of the present disclosure so as to still belong to the scope of the present disclosure.

Claims

1. An exterior decorative member (100), comprising a textured surface (101), the textured surface (101) being divided into a plurality of partition units (110) arranged in a plurality of rows and columns, each of the partition units (110) having a respective sub-texture (11); The included angle of the sub-texture (11) with respect to the row direction (x) is defined as a texture angle (α), and the sub-texture (11) of the plurality of partition units (110) satisfies the following requirements: The texture angles (α) of any two adjacent sub-textures (11) in the first row are different, and the texture angles (α) of the plurality of sub-textures (11) in each column form an arithmetic progression along the column direction (y). The exterior decorative member (100) satisfies the above.

2. The exterior decorative member (100) according to claim 1, wherein the difference in texture angle (α) between any two adjacent sub-textures (11) in the first row is 5° or more.

3. The exterior decorative member (100) according to claim 1, wherein the absolute value of the common difference of the arithmetic progression formed by the texture angles (α) of the plurality of sub-textures (11) in each row along the row direction (y) is greater than 0° and less than or equal to 60°.

4. 4. The exterior decorative member (100) of claim 3, wherein all the sub-textures (11) in at least two columns form a column texture group (111) along the column direction (y), and the texture angles (α) of all the sub-textures (11) in the column texture group (111) in the same column have a plurality of tolerances along the column direction (y).

5. 5. The exterior decorative member (100) of claim 4, wherein all sub-textures (11) in at least two columns form a row texture group (112) along the row direction (X), and the texture angles (α) of all sub-textures (11) in the row texture group (112) in the same row have one or more tolerances along the row direction (X).

6. The exterior decorative member (100) according to claim 1, wherein the sub-textures (11) of the plurality of partition units (110) are rotationally symmetric.

7. The exterior decorative member (100) of claim 1, wherein the structures of at least some of the sub-textures (11) of the plurality of partition units (110) are different, or any two of the sub-textures (11) of the plurality of partition units (110) have the same structure.

8. The exterior decorative member (100) of claim 1, wherein the plurality of compartment units (110) have the same shape and size, or the plurality of compartment units (110) have the same shape and different sizes.

9. 9. The exterior decorative member (100) according to any one of claims 1 to 8, wherein the sub-texture (11) comprises linear structures (20) protruding from the textured surface (101).

10. The exterior decorative member (100) according to claim 9, wherein the width of the linear structure (20) in the normal direction to the extension path of the linear structure (20) is 1 μm to 200 μm, and the height of the linear structure (20) in the direction perpendicular to the height of the textured surface (101) is 1 μm to 15 μm.

11. The exterior decorative member (100) according to claim 10, wherein the width of the linear structure (20) in the normal direction of the extension path of the linear structure (20) is 10 μm to 100 μm, and the height of the linear structure (20) in the height direction perpendicular to the textured surface (101) is 3 μm to 8 μm.

12. 10. The exterior decorative member (100) of claim 9, wherein the cross-sectional shape of the linear structure (20) is one of a circular arc shape, a triangular shape, a trapezoidal shape, and a saddle shape.

13. The exterior decorative member (100) according to any one of claims 1 to 8, wherein each of the sub-textures has a chamfer.

14. A method for manufacturing an exterior decorative member (100), comprising: Fabricating a photolithographic master die having a sub-texture (11); producing a PC mold or a GDM mold using the photolithography master die; The sub-texture (11) is copied onto a PET explosion-proof film or a PC+PMMA composite board using the PC mold to form the exterior decorative member (100); Alternatively, the sub-texture (11) is copied onto glass using the GDM mold to form the exterior decorative member (100). Including, The photolithography master die has a plurality of partition units (110), each of the partition units (110) having a sub-texture (11); The included angle of the sub-texture (11) with respect to the row direction (x) is defined as a texture angle (α), and the sub-textures of the plurality of partition units (110) satisfy the following condition: The texture angles (α) of any two adjacent sub-textures (11) in the first row are different, and the texture angles (α) of the plurality of sub-textures (11) in each column form an arithmetic progression along the column direction (y). A way to satisfy.

15. An electronic device comprising an exterior decorative member (100) according to any one of claims 1 to 14.

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