Workpiece and electronic device

Abstract

Workpiece and electronic device. The workpiece includes a substrate, and a texture layer is provided on a surface of one side of the substrate and includes a plurality of first-level regions. Each first-level region includes a plurality of structural units. The plurality of structural units include at least a first structural unit and a second structural unit connected to each other. The first structural unit and the second structural unit each internally include a plurality of first texture stripes arranged continuously and a plurality of second texture stripes arranged continuously. Both ends of at least some of the first texture stripes are both on the contour of the first structural unit. Both ends of at least some of the second texture stripes are both on the contour of the second structural unit. The ends of at least some of the first texture stripes are in contact with the ends of at least some of the second texture stripes.

Description

Technical Field

[0001] Cross - reference to Related Applications This disclosure claims priority and the benefit thereof to Chinese Patent Application No. 202210610353.8, entitled "WORKPIECE AND ELECTRONIC DEVICE", filed on May 31, 2022. The entire content of the above application is incorporated herein by reference.

[0002] This disclosure relates to the field of workpiece manufacturing technology, and more particularly, to workpieces and electronic devices.

Background Art

[0003] With the improvement of the overall consumption level, the market's requirements for the texture of the appearance of electronic devices are increasing. Currently, manufacturers usually place a texture film inside the housing of an electronic device to give it a beautiful appearance. However, such electronic devices generally do not produce a cool effect with changing light and shade, making the electronic device appear less flexible.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of this, this disclosure provides a workpiece and an electronic device in which the protruding structures between the texture layers on the surface of the workpiece cooperate with each other to form a multi - segment curve, so that the surface of the workpiece has a matte texture pattern. In addition, the protruding structures cooperate with each other to refract and reflect light at different angles and intensities, thereby improving the multi - layeredness and flexibility of the matte texture pattern, enriching the visual effect of the workpiece, and improving the aesthetic appearance.

Means for Solving the Problems

[0005] Specifically, according to the first aspect of the present disclosure, a workpiece is provided. The workpiece includes a substrate. A texture layer is provided on the surface on one side of the substrate. The texture layer includes a number of first-level regions. The first-level regions present light and shade changes, and each of the first-level regions includes a number of structural units. The number of structural units includes at least a first structural unit and a second structural unit connected to the first structural unit. The first structural unit includes a number of first texture stripes arranged continuously, and at least some of the ends of the number of first texture stripes are both on the contour of the first structural unit. The second structural unit includes a number of second texture stripes arranged continuously, and at least some of the ends of the number of second texture stripes are both on the contour of the second structural unit. The ends of at least some of the first texture stripes are in contact with the ends of at least some of the second texture stripes. Each texture stripe included in each of the structural units is a protruding structure.

[0006] In some implementations, one end of at least some of the first texture stripes is in contact with a number of second texture stripes.

[0007] In some implementations, the extending direction of each texture stripe in each of the structural units has a predetermined angle with respect to a predetermined direction, and the predetermined angle is individually within the range of -90° to 90°.

[0008] In some implementations, the predetermined direction is the length direction or the width direction of the substrate.

[0009] In some implementations, there are at least some first-level regions where the predetermined angle of each texture stripe within each single first-level region is within the range of -10° to 10°, and there are also some first-level regions where the predetermined angle of each texture stripe within each single first-level region is within the range of 80° to 90° and / or -90° to 80°.

[0010] In some implementation forms, there are at least some first-level regions where the default angle of each texture stripe within each single first-level region is within the range of -30° to 30°, and there are also some first-level regions where the default angle of each texture stripe within each single first-level region is within the range of 60° to 90° and / or -90° to -60°, and there are further some first-level regions where the default angle of each texture stripe within each single first-level region is within the range of -60° to -30° and / or 30° to 60°.

[0011] In some implementation forms, the first-level regions where the default angle is within the range of -60° to -30° and / or 30° to 60° are located between the first-level regions where the default angle is within the range of -30° to 30° and the first-level regions where the default angle is within the range of 60° to 90° and / or -90° to -60°.

[0012] In some implementation forms, the width of the protruding structure gradually decreases in the direction away from the substrate.

[0013] In some implementation forms, the cross-sectional shape of the protruding structure includes at least one of an arch shape and a polygonal shape.

[0014] In some implementation forms, the width of the protruding structure is in the range of 2 μm to 100 μm.

[0015] In some implementation forms, the height of the protruding structure is less than or equal to the maximum width of the protruding structure.

[0016] In some implementation forms, a number of protruding structures are arranged continuously within the same structural unit.

[0017] In some implementation forms, a number of protruding structures are arranged at intervals within the same structural unit, and the distance between two adjacent protruding structures is less than the maximum width of the protruding structure.

[0018] In some embodiments, the ratio of the maximum width to the length of the protruding structure is 1:(5 to 20).

[0019] In some embodiments, the material of the substrate includes at least one of metal, glass, ceramic, and polymer composite material.

[0020] The texture layer on the surface of the workpiece has a number of first-level regions with different levels of light and shade, thereby presenting a dynamic effect similar to the actual light and shade changes of hair. In addition, the surface of the workpiece has many protruding structures, which reduce the contact area between the human finger and the surface of the workpiece, thereby preventing hand sweat and fingerprints from remaining and maintaining a glamorous appearance even after long-term use.

[0021] According to a second aspect of the present disclosure, an electronic device is provided. The electronic device has a workpiece provided in the first aspect of the present disclosure. The electronic device has a cool appearance, thereby improving the appearance expressiveness and product competitiveness of the electronic device.

Brief Description of the Drawings

[0022]

Figure 1A

Figure 1B

Figure 1C

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Figure 11

Mode for Carrying Out the Invention

[0023] The present disclosure provides a workpiece and an electronic device in which protruding structures between texture layers on the surface of the workpiece cooperate with each other to form a multi-segment curve, and as a result, the surface of the workpiece has a matte texture pattern. In addition, the protruding structures cooperate with each other to refract and reflect light at different angles and intensities, thereby improving the multi-layeredness and flexibility of the matte texture pattern, enriching the visual effect of the workpiece, and improving the aesthetic appearance.

[0024] Hereinafter, the technical solution of the present disclosure will be described in detail with reference to the accompanying drawings.

[0025] Referring to FIGS. 1A to 7, one embodiment of the present disclosure provides a workpiece. The workpiece 100 includes a substrate 10. A texture layer 20 is provided on a surface of one side of the substrate 10. The texture layer 20 includes a number of first-level regions 21. The first-level regions 21 present light and shade changes, and each first-level region 21 includes a number of structural units 22. The number of structural units 22 includes at least a first structural unit and a second structural unit connected to the first structural unit. The first structural unit includes a number of continuously arranged first texture stripes, and at least some of both ends of the number of first texture stripes are on the contour of the first structural unit. The second structural unit includes a number of continuously arranged second texture stripes, and at least some of both ends of the number of second texture stripes are on the contour of the second structural unit. The ends of at least some of the first texture stripes are in contact with the ends of at least some of the second texture stripes. Each texture stripe included in each of the structural units is an individual protruding structure.

[0026] The texture layer on the surface of the workpiece has a number of first-level regions with different light and shade levels, thereby being able to present a dynamic effect similar to the light and shade changes of actual hair. In addition, the surface of the workpiece has a number of protruding structures, which can reduce the contact area between the human finger and the surface of the workpiece, thereby preventing hand sweat and fingerprints from remaining. As a result, the workpiece can still maintain a magnificent appearance after long-term use.

[0027] In the present disclosure, the first structural unit and the second structural unit are any two connected structural units among the number of structural units. For the convenience of marking, in FIGS. 1A to 5, each structural unit is marked as 21. Similarly, the first texture stripe and the second texture stripe are texture stripes in any two connected structural units, respectively. For the convenience of marking, in FIG. 5, each texture stripe is marked as 221.

[0028] As shown in FIGS. 2 to 5, a texture layer 20 is provided on the surface of the substrate 10, and the texture layer 20 includes a number of first-level regions 21 that present changes in light and shade. The changes in light and shade between different first-level regions are caused by different extending directions of the texture stripes within the first-level regions. The extending directions of the texture stripes within each first-level region are the same or similar. Specifically, each texture stripe is an individual protruding structure, and the protruding structure has a number of light reflection angles. Due to the different extending directions, the brightness of the light reflected by the protruding structure at a certain light angle is different. Therefore, when the user observes the workpiece from a certain angle, the surface of the workpiece may be divided into a number of first-level regions with different light brightnesses. When the user changes the observation angle, accordingly, the brightness of each first-level region changes, bringing a rich visual sensation to the user.

[0029] Furthermore, each first-level region 21 includes a number of structural units 22, and the first structural unit and the second structural unit are any two connected structural units among the number of structural units 22. In both the first structural unit and the second structural unit, at least some of the ends of the first texture stripes or the second texture stripes are both on the outer contour of the structural unit, and as a result, the first texture stripes and the second texture stripes may be in contact with each other. In addition, at least some of the ends of the first texture stripes are in contact with at least some of the ends of the second texture stripes. In this case, the first texture stripes and the second texture stripes may form a multi-segment curve.

[0030] For example, in a first structural unit having m first texture stripes inside, one end of i out of the m first texture stripes is in contact with j second texture stripes in a second structural unit, and the other end of k out of n second texture stripes is in contact with r first texture stripes in another first structural unit (where m, n, j, i, k, and r are all integers, m≥2, n≥2, i≥1, j≥1, k≥1, r≥1, and each value may be the same or different). As a result, at least one multi-segment curve including three texture stripes 221 may be formed. Specifically, as shown in FIG. 5, in the first structural unit B, one end of three of the four texture stripes in B (the first texture stripes b1, b2, and b3) is connected to three second texture stripes in the second structural unit A, and the other ends of b1 and b2 are also in contact with two second texture stripes in the second structural unit C respectively. As a result, a number of multi-segment curves including three texture stripes 221 are formed. The structural unit A and the structural unit C have other adjacent structural units, and by analogy, more multi-segment curves including different amounts of texture stripes 221 may be formed, and as a result, multi-segment curves of different lengths may be formed. When the user observes the workpiece, each multi-segment curve is similar to hair.

[0031] In addition, as can be seen from the above, there must be several texture stripes 221 having different extending directions (including similar situations or very different situations). As a result, the multi-segment curves may have different curvatures, lengths, and extending directions, and finally, the surface of the workpiece can present a hair-like pattern with a rich layer.

[0032] In summary, the texture layer 20 on the surface of the workpiece 100 has different levels of light and shade and can present a dynamic effect similar to that of real hair. That is, when the light and the viewing angle change, the hair texture pattern on the surface of the workpiece 100 also produces an effect where light and shade with multilayering and flexibility flow alternately, having a rich visual effect and bringing wonderful artistic beauty. In addition, the surface of the workpiece 100 has many protruding structures. This uneven structure can reduce the contact area between the human hand and the surface of the workpiece, thereby preventing the sweat and fingerprints of the hand from remaining. As a result, the workpiece 100 can still maintain a magnificent appearance even after long-term use.

[0033] In the present disclosure, the shape of the first-level region 21 can be regular or irregular. For example, the first-level region may be circular, irregularly curved, annular, etc.

[0034] In the present disclosure, in some cases, all of the dark stripes and white stripes in FIGS. 2 to 4 may represent texture stripes 221 (i.e., protruding structures). In some other cases, the dark stripe pattern in FIGS. 2 to 4 represents the texture stripe 221, and the white stripe pattern represents the interval between two adjacent texture stripes 221 within the same structural unit 22. That is, the texture stripes 221 within the structural unit 22 may be connected to each other or arranged at intervals, but in any case, there is a boundary between adjacent texture stripes 221, and the surfaces of the substrate 10 corresponding to the adjacent texture stripes 221 are each covered with a protruding structure.

[0035] In the present disclosure, the shape of the structural unit 22 is not particularly limited, and it may be rectangular, circular, fan-shaped, polygonal, irregular in shape, etc., as long as a number of structural units 22 can harmonize with each other to form a continuous texture layer 20.

[0036] In the present disclosure, the contact between texture stripes 221 may refer to the case where the two texture stripes 221 are completely connected, or may also refer to the case where the two texture stripes 221 are connected in a shifted state as long as the two texture stripes 221 have an intersection point.

[0037] In some implementations of the present disclosure, both ends of at least some of the first texture stripes are in contact with a number of second texture stripes. The number of second texture stripes may be derived from the same second structural unit or from different second structural units. In this case, it may be understood as being equivalent to forming a structure like a tree. For example, referring to FIG. 3, one end of the texture stripe e in FIG. 3 is in contact with the texture stripes f and f', and the two multi-segment curves d-e-f and d-e-f' intersect each other. When the user quickly changes the viewing angle, a pattern like hair can produce a flowing effect, further enriching the visual effect of the workpiece.

[0038] In some implementations of the present disclosure, the extending direction of each texture stripe 221 within each structural unit 22 has a predetermined angle with respect to a predetermined direction, and the predetermined angle is individually within the range of -90° to 90°. The predetermined direction is the length direction or the width direction of the workpiece 100 (specifically, the length direction or the width direction of the substrate 10). When discussing the positional relationship of the texture stripes 221 on the workpiece 100, it is necessary to use either the length direction or the width direction of the workpiece 100 as the predetermined direction. Specifically, taking FIG. 5 as an example, the predetermined angle between the extending direction of the texture stripe g in FIG. 5 and the predetermined direction is 0°, and the predetermined angle between the extending direction of the texture stripe e and the predetermined direction is 90° (or -90°). When the user observes the workpiece 100 obliquely, when the predetermined angle of most of the texture stripes 221 (i.e., the protruding structures) within the first-level region is within the range of -30° to 30° (see region A in FIG. 1A and the first-level region 21 marked in FIG. 2), the first-level region is a clear light-color region. When the predetermined angle of most of the texture stripes 221 within the first-level region is within the range of -90° to -60° or 60° to 90°, the first-level region is a clear dark-color region (see region B in FIG. 1A and FIG. 3). It can be understood that when the predetermined angle of most of the texture stripes 221 within the first-level region is within the range of -60° to -30° or 30° to 60°, the first-level region is a brightness transition region between the above-mentioned two regions (see region C in FIG. 1A and the first-level region 21 marked in FIG. 4).

[0039] In some implementations of the present disclosure, there are at least some first-level regions 21 in which the predetermined angle of each texture stripe 221 within each single first-level region 21 is within the range of -10° to 10°, and there are also some first-level regions 21 in which the predetermined angle of each texture stripe 221 within each single first-level region 21 is within the range of 80° to 90° and / or -90° to -80°. In this case, the surface of the workpiece 100 has relatively prominent light and dark regions, leading to a richer appearance of the workpiece 100. Additionally, the curvature of the multi-segment curve within the same first-level region 21 transitions naturally, thereby making the hair texture of the workpiece 100 more natural and realistic.

[0040] In some implementations of the present disclosure, there are at least some first-level regions 21 (represented by first-level region X) in which the predetermined angle of each texture stripe 221 within each single first-level region 21 is within the range of -30° to 30°, and there are also some first-level regions 21 (represented by first-level region Y) in which the predetermined angle of each texture stripe 221 within each single first-level region 21 is within the range of 60° to 90° and / or -90° to -60°, and there are further some first-level regions 21 (represented by first-level region Z) in which the predetermined angle of each texture stripe 221 within each single first-level region 21 is within the range of -60° to -30° and / or 30° to 60°. In this case, the light and shadow effects on the surface of the workpiece 100 become richer. Furthermore, the presented hair texture can become more natural and realistic.

[0041] In some implementations of the present disclosure, the first-level region Z is located between the first-level region X and the first-level region Y. In this case, the surface of the workpiece 100 has a light region, a dark region, and a transition region between the light region and the dark region, thereby making the transition of light and shadow on the surface of the workpiece 100 more natural, and as a result, the workpiece becomes more aesthetically attractive.

[0042] In some implementations of the present disclosure, the width of the protruding structure gradually decreases in a direction away from the substrate 10. In this case, when the user changes the viewing angle, the effect of the dynamic change of light and shadow of the workpiece becomes more prominent.

[0043] Referring to FIGS. 7 to 9 together, in some implementations of the present disclosure, the shape of the cross-section of the protruding structure (the cross-section is parallel to the thickness direction of the substrate 10) includes at least one of an arch shape and a polygon, but is not limited thereto. The shapes of the cross-sections of the protruding structures may be the same or different. For example, the polygon is a triangle, a trapezoid, etc., and correspondingly, the shape of the protruding structure is a prism, a quadrangular prism, etc. as long as the protruding structure has a number of light reflection angles under light irradiation.

[0044] In some implementations of the present disclosure, the width of the protruding structure ranges from 2 μm to 100 μm. For example, the width of the protruding structure may be 2 μm, 5 μm, 7 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc. The widths of the protruding structures may be the same or different. In this case, the size of each protruding structure is relatively small, which can ensure that each structural unit 22 can have a relatively large number of protruding structures. On the other hand, the protruding structure with a suitable size can better present a pattern like smooth hair and ensure that the workpiece 100 has a rich appearance. In addition, the protruding structure with the above size is relatively easy to prepare.

[0045] In some implementations of the present disclosure, the ratio of the maximum width to the length of the protruding structure is 1:(5 to 20). The protruding structure has a suitable aspect ratio, which helps to control the smoothness of the multi-segment curve (hair).

[0046] In some implementations of the present disclosure, the height of the protruding structure is not more than the maximum width of the protruding structure. This helps in the preparation of the workpiece 100 and ensuring the aesthetics of the workpiece 100.

[0047] In some implementations of the present disclosure, a number of protruding structures are arranged continuously within the same structural unit 22. In this case, the arrangement helps to ensure that each structural unit 22 has as many protruding structures as possible, resulting in a more elaborate appearance of the workpiece 100.

[0048] In some implementations of the present disclosure, a number of protruding structures are arranged at intervals within the same structural unit 22, and the distance between two adjacent protruding structures is less than the maximum width of the protruding structure. In the same structural unit 22, the distance between two adjacent protruding structures may be the same or different. The distances between adjacent protruding structures in different structural units 22 may be the same or different. The presence of a distance between the protruding structures can reduce the density of the protruding structures in the texture layer 20, and the difficulty of the manufacturing process of the workpiece 100 can be reduced. However, the appearance of the flowing hair-like pattern of the workpiece 100 can only be ensured at a suitable density. Those skilled in the art can select the density of the protruding structures according to the actual manufacturing requirements and customer requirements as long as the appearance effect of the workpiece 100 can be achieved.

[0049] In the present disclosure, the material and thickness of the substrate 10 are not particularly limited and can be selected according to the user's requirements. Specifically, the material of the substrate 10 includes, but is not limited to, metals, glasses, ceramics, polymer composites, etc.

[0050] In the present disclosure, the method for preparing the workpiece 100 may be a technical method well known to those skilled in the art. In some specific embodiments, the following steps are included. (1) A mold having a texture layer structure is prepared through photolithography. (2) A texture layer is formed on the surface of the substrate to obtain a workpiece.

[0051] Specifically, a planar pattern like hair may be designed in advance, and then, by using software, layer decomposition can be performed according to the light and shadow characteristics of different regions of the planar pattern. Next, in order to design and complete a hair texture structure having an effect of dynamically changing light and shadow, the texture structure parameters of each decomposed layer are set. Finally, the layer structure parameters are converted into a photolithography data file to obtain a mold having a texture layer structure through photolithography.

[0052] The method for forming a texture layer on the surface of the substrate can be selected according to the material of the substrate. For example, processes such as UV transfer printing, in-mold injection molding, injection molding, glass lamination, chemical etching, optical coating, and electroforming may be used.

[0053] An embodiment of the present disclosure further provides an electronic device for holding the workpiece 100 provided in the embodiment of the present disclosure. The electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a smart watch, an electronic cigarette, etc. For example, the workpiece 100 may be processed into the shell of a mobile phone, a tablet computer, a notebook computer, or a smart watch, or may be processed into related parts of an electronic cigarette. As a result, the electronic device can have a cool appearance effect, thereby improving the appearance expressiveness and product competitiveness of the electronic device.

[0054] In addition, the workpiece 100 may alternatively be processed into a high-class nameplate to improve the artistic quality of the product.

[0055] Hereinafter, the technical solution of the present disclosure will be described in detail with reference to specific embodiments.

[0056] Embodiment 1 In Embodiment 1, the workpiece is the back cover of a mobile phone, and the substrate is made of glass. In each structural unit, the texture stripes are arranged without intervals, and the protruding structure is a triangular prism with a width of 10 μm and a height of 1.5 μm.

[0057] Embodiment 2 The difference from Embodiment 1 is that the protruding structure is a triangular prism with a width of 100 μm and a height of 50 μm.

[0058] Embodiment 3 The difference from Embodiment 1 is that the protruding structure is a triangular prism with a width of 2 μm and a height of 1 μm.

[0059] Embodiment 4 The difference from Embodiment 1 is that the cross-section of the protruding structure is in the shape of an arch.

[0060] Embodiment 5 The difference from Embodiment 1 is that in each structural unit, the texture stripes are arranged at intervals, the distance between adjacent texture stripes is 10 μm, and the protruding structure is a triangular prism with a width of 50 μm and a height of 30 μm.

[0061] Figures 10 and 11 are respectively a microscopic photograph of a local area of the back cover of the mobile phone in Embodiment 1 and a texture structure size analysis. A large number of structural units constitute the rough texture pattern of the back cover of the housing. Figures 1A to 1C are grayscale images of the back cover of the mobile phone obtained in Embodiment 1 at different observation angles. It can be clearly seen that the hair pattern in the same area of the back cover of the mobile phone produces changes in light and shade when the observation angle changes, and the hairline of the pattern on the back cover is smooth, with multi-layeredness and flexibility.

[0062] In the above, exemplary implementation forms of the present disclosure have been described. It should be noted that those skilled in the art can make several further improvements and modifications to the present disclosure without departing from the principles of the present disclosure, and these improvements and modifications are also considered to be included in the protection scope of the present disclosure.

Description of Symbols

[0063] 100 Workpiece 10 Substrate 20 Texture layer 21 First-level region 22 Structural unit 221 Texture stripe

Claims

1. A workpiece (100) comprising a substrate (10), wherein a texture layer (20) is provided on one surface of the substrate (10), the texture layer (20) includes a plurality of first-level regions (21), the plurality of first-level regions (21) present a change between light and shade, each of the first-level regions (21) comprises a plurality of structural units (22), the plurality of structural units (22) comprises at least a first structural unit and a second structural unit connected to the first structural unit, the first structural unit comprises a plurality of first texture stripes arranged continuously, both ends of at least some of the plurality of first texture stripes are both on the contour of the first structural unit (22), the second structural unit comprises a plurality of second texture stripes arranged continuously, both ends of at least some of the plurality of second texture stripes are both on the contour of the second structural unit, ends of at least some of the first texture stripes are in contact with ends of at least some of the second texture stripes, and each texture stripe (221) included in each of the structural units (22) is an individual protruding structure, the workpiece (100).

2. The workpiece (100) according to claim 1, wherein one end of at least some of the first texture stripes is in contact with a plurality of second texture stripes.

3. The workpiece (100) according to claim 1 or 2, wherein an extending direction of each texture stripe (221) in each of the structural units (22) has a predetermined angle with respect to a predetermined direction, and the predetermined angle is individually within a range of -90° to 90°.

4. The workpiece (100) according to claim 3, wherein the predetermined direction is the length direction or the width direction of the substrate (10).

5. There are at least some first-level regions (21) in which the predetermined angle of each texture stripe (221) within each single first-level region (21) is within the range of -10° to 10°, and there are also some first-level regions (21) in which the predetermined angle of each texture stripe (221) within each single first-level region (21) is within the range of 80° to 90° and / or -90° to -80°. The workpiece (100) according to claim 3 or 4.

6. There are at least some first-level regions 21 in which the predetermined angle of each texture stripe (221) within each single first-level region (21) is within the range of -30° to 30°, and there are also some first-level regions (21) in which the predetermined angle of each texture stripe (221) within each single first-level region (21) is within the range of 60° to 90° and / or -90° to -60°, and there are further some first-level regions (21) in which the predetermined angle of each texture stripe (221) within each single first-level region (21) is within the range of -60° to -30° and / or 30° to 60°. The workpiece (100) according to claim 3 or 4.

7. The first-level region (21) in which the predetermined angle is within the range of -60° to -30° and / or 30° to 60° is located between the first-level region (21) in which the predetermined angle is within the range of -30° to 30° and the first-level region (21) in which the predetermined angle is within the range of 60° to 90° and / or -90° to -60°. The workpiece (100) according to claim 6.

8. The width of the protruding structure gradually decreases in the direction away from the substrate (10). The workpiece (100) according to any one of claims 1 to 7.

9. The cross-sectional shape of the protruding structure includes at least one of an arch shape and a polygonal shape. The workpiece (100) according to any one of claims 1 to 7.

10. The workpiece (100) according to any one of claims 1 to 9, wherein the width of the protruding structure ranges from 2 μm to 100 μm.

11. The workpiece (100) according to claim 10, wherein the height of the protruding structure is less than or equal to the maximum width of the protruding structure.

12. The workpiece (100) according to any one of claims 1 to 11, wherein a plurality of protruding structures are arranged continuously within the same structural unit (22).

13. The workpiece (100) according to any one of claims 1 to 11, wherein a plurality of protruding structures are arranged inside the same structural unit (22), and the distance between two adjacent protruding structures is less than the maximum width of the protruding structure.

14. The workpiece (100) according to any one of claims 1 to 13, wherein the ratio of the maximum width to the length of the protruding structure is 1:(5 to 20).

15. The workpiece (100) according to any one of claims 1 to 14, wherein the material of the substrate (10) includes at least one of metal, glass, ceramic, and polymer composite material.

16. An electronic device comprising the workpiece (100) according to any one of claims 1 to 15.

Images