A housing and an electronic device

Abstract

The application relates to the technical field of material surface processing, and in particular relates to a shell and an electronic device. The shell comprises a first texture layer, a target layer and a second texture layer; a first target surface of the first texture layer has a first texture, reflected light beams of the first texture are emitted from the shell to present a first visual effect, the first visual effect is that the brightness of the reflected light beams is different under different visual angles; the reflectivity of the target layer is greater than 0.25 and the reflected light beams are transmitted; an appearance surface of the second texture layer has a second texture, the second texture transmits the reflected light beams of the first texture layer and the target layer and forms scattering.

Description

Technical Field

[0001] This application relates to the field of material surface processing technology, and more particularly to a housing and electronic device. Background Technology

[0002] In recent years, with the increasing popularity of electronic devices in daily life, the appearance of electronic devices has received more and more attention. As consumers demand more variety in appearance, there is a need for more diverse and customized appearance designs. Utility Model Content

[0003] In view of this, the technical problem to be solved by this application is to provide a housing and an electronic device.

[0004] This application provides a shell, including a first texture layer, a target layer, and a second texture layer;

[0005] The first target surface of the first texture layer has a first texture, and the reflected light beam of the first texture is emitted from the shell to present a first visual effect, wherein the brightness of the reflected light beam is different under different viewing angles;

[0006] The target layer has a reflectivity greater than 0.25 and allows the reflected light beam to pass through;

[0007] The surface of the second texture layer has a second texture, which allows reflected light beams from the first texture layer and the target layer to pass through and form scattering.

[0008] Optionally, the first texture is a groove extending along a first direction on the first target surface, the first direction being parallel to the first target surface.

[0009] Optionally, in the first direction, at least a portion of the first texture is not located on the same straight line.

[0010] Optionally, the depth of the first texture may be the same or different at different locations.

[0011] Optionally, the second texture is a regularly arranged and / or irregularly arranged line or pit formed on the surface of the second texture layer;

[0012] The second texture can reduce the gloss of the target layer.

[0013] Optionally, the second texture layer is a photocurable adhesive layer;

[0014] The thickness of the second texture layer is 15–20 μm;

[0015] The depth of the texture is less than or equal to 20 μm;

[0016] The line spacing of the texture is less than or equal to 50 μm.

[0017] Optionally, the target layer is a physical vapor deposition layer;

[0018] The target layer is used to provide a metallic luster.

[0019] Optionally, an ink layer is provided on the side of the first texture layer away from the target layer.

[0020] Optionally, the housing includes:

[0021] Substrate layer, ink layer, first texture layer, target layer, and second texture layer;

[0022] The substrate layer is disposed on the side of the ink layer away from the first texture layer.

[0023] This application provides an electronic device, including:

[0024] Housing, which is part of the body of the electronic device;

[0025] The outer surface of the shell includes a first texture layer, a target layer, and a second texture layer;

[0026] The first target surface of the first texture layer has a first texture, and the reflected light beam of the first texture is emitted from the shell to present a first visual effect, wherein the brightness of the reflected light beam is different under different viewing angles;

[0027] The target layer has a reflectivity greater than 0.25 and allows the reflected light beam to pass through;

[0028] The surface of the second texture layer has a second texture, which allows reflected light beams from the first texture layer and the target layer to pass through and form scattering. Attached Figure Description

[0029] Figure 1 A schematic diagram of the shell structure provided in this application;

[0030] Figure 2 This is a schematic diagram of the structure of the first texture;

[0031] Figure 3 This is a schematic diagram of the structure of the shell provided in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the structure of the shell provided in an embodiment of this application;

[0033] Figure 5 A flowchart of the method for preparing the shell provided in this application;

[0034] Figure 6 The process flow diagrams for Examples 1 and 2 are shown below;

[0035] Figure 7 An image showing the appearance of the shell prepared in Example 1 from a first viewing angle;

[0036] Figure 8 An image of the casing prepared in Example 1 from a second viewing angle;

[0037] Figure 9 An image of the shell prepared in Example 1 from a third viewing angle;

[0038] Figure 10 The image shows the appearance of the shell prepared in Example 1 from a fourth viewing angle. Detailed Implementation

[0039] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely one area of ​​this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0040] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] This application provides a housing, which can be a housing for electronic products such as mobile phones, computers, and tablets. This application does not impose special limitations on the shape of the housing, as long as it can be adapted to the electronic products such as mobile phones, computers, and tablets, including but not limited to flat or curved shapes. This application does not impose special limitations on the size of the housing, as long as it can be adapted to the size of the electronic products such as mobile phones, computers, and tablets.

[0042] like Figure 1 As shown, Figure 1 The schematic diagram of the housing provided in this application shows that the housing may include:

[0043] First texture layer 100, target layer 200, and second texture layer 300.

[0044] The first target surface 101 of the first texture layer 100 may have a first texture 110. The reflected light beam of the first texture 110 can present a first visual effect when emitted from the shell. The first visual effect may be that the brightness of the reflected light beam is different under different viewing angles. By the different brightness of the reflected light beam, the product appearance can present different light and dark gradient effects under different viewing angles.

[0045] It should be noted that the aforementioned first target surface 101 can be the side of the first texture layer 100 facing the target layer 200, used to imprint the first texture 110, making the first texture 110 visible on the outer surface of the housing. The reflected beam of the first texture 110 is a beam of light reflected by the first texture 110. When it exits the housing, it can carry the shape information of the first texture 110. Therefore, when the reflected beam passes through the target layer 200 and the second texture layer 300 of the housing, it will present a beam effect with the shape characteristics of the first texture 110, which is the aforementioned first visual effect. Therefore, the aforementioned first texture 110 is the texture structure in the housing used to form the appearance effect.

[0046] In one embodiment of this application, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of the first texture 110. The first texture 110 can be a groove extending along a first direction on the first target surface 101. That is, the first texture 110 can be formed by a continuous groove extending along the first direction from a depression in the first target surface 101. It should be noted that... Figure 2 This is merely a schematic diagram of the structure of the first texture 110 and does not represent the actual structure of the first texture 110. Furthermore... Figure 2 The arrangement of multiple first textures 110 is only an illustration; the arrangement of the first textures 110 can be as follows: Figure 2 The discrete arrangement shown in Figure a can also be the closely adjacent arrangement shown in Figure b, or an arrangement other than the two methods mentioned above.

[0047] In one embodiment of this application, at least a portion of the first texture 110 may not be located on the same straight line in the first direction, that is, at least a portion of the first texture 110 in its extension direction may not be located on the same straight line, that is, the shape of the projection of the first texture 110 onto the first target surface 101 may not be a straight line, and the first texture 110 may be a non-linear groove extending along the first direction on the first target surface 101.

[0048] This application does not impose special limitations on the line shape of the first texture 110, including but not limited to wavy, S-shaped, parabolic, spiral, V-groove, sine wave, pyramid, cylinder, regular and / or irregularly arranged concentric circles, etc. Using a non-linear texture allows the texture effect of the first texture 110 to be presented from multiple directions. Furthermore, under different visual angles, the brightness of the reflected light beam observed by the user changes due to changes in the angle and distance between the viewpoint and the texture. Due to light interference, when constructive interference occurs (i.e., the optical path difference is an integer multiple of the wavelength), the amplitudes superimpose, forming bright fringes; when destructive interference occurs, i.e., ... When the optical path difference is an odd multiple of half the wavelength, the amplitude cancels out, forming dark stripes, giving the product a gradient effect of light and dark. As a result, the visual effect of the shell appearance can change with the viewing angle. Under the same viewing angle, different positions of the shell can present different light and dark effects, making the appearance richer. When the viewing angle changes, the brightness of the reflected light beam of the observed texture changes, and the shell can present another kind of light and dark gradient effect. This allows users to observe the visual effect produced by the reflected light beam of the first texture 110 when observing the shell from multiple directions, and the observed visual effects can be different, thus achieving a rich product appearance.

[0049] In one embodiment of this application, the depth of the first texture 110 at different locations may be the same or different. That is, the texture depth of the first texture 110 at various points along its extension direction may be the same or different. In this application, the depth may refer to the depth of the indentation of the first texture 110 on the first target surface 101, that is, the depth of the first texture 110 may be the depth of the indentation of the first texture 110 relative to the base surface, that is, the vertical distance between the apex and the valley of the first texture 110, or the height difference between the highest and lowest points on the contour line.

[0050] In one embodiment of this application, the depth of the first texture 110 is the same at different positions, that is, the texture depth of the first texture 110 at all points in its extension direction can be kept consistent, so that the texture effect presented at all points in the extension direction of the first texture 110 can also be consistent, thereby making the appearance of the shell rich and regular, and aesthetically pleasing.

[0051] In one embodiment of this application, the depth of the first texture 110 varies at different locations. As the depth increases, more reflected light beams can be emitted from the texture surface, and the brightness of the reflected light beams can gradually increase. By setting textures of different depths, different light and dark gradient effects are formed.

[0052] In one embodiment of this application, in the first texture 110, the depths of adjacent textures may be different, and the texture effects presented by the reflected light beams of adjacent textures after exiting the shell may also be different, forming different light and shadow effects on the surface of the shell, so that the product has a richer appearance.

[0053] In one embodiment of this application, the surface of the first texture 110 can be a smooth surface, that is, the surface of the first texture 110 has no protrusions or depressions. In some embodiments, the first texture 110 can achieve different depths at different locations through gradual height changes. A smooth surface allows reflected light beams to exit directly through the housing without any diffuse reflection, increasing the glossiness of the first visual effect.

[0054] The depth of the first texture 110 can be 5–10 μm, including endpoint values, but this application does not limit it and it depends on the specific situation. In some embodiments, the depth of the first texture 110 can be 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, or 10 μm, or any of the above values ​​as the upper or lower limit. Using a suitable texture depth can change the reflectance spectrum distribution, which helps to form a satisfactory appearance.

[0055] The line spacing of the first texture 110 can be less than or equal to 10 μm, but this application does not limit this and it depends on the specific circumstances. In some embodiments, the line spacing of the first texture 110 can satisfy the condition of being greater than 0.1 μm. In some embodiments, the line spacing of the first texture 110 can be 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, or a range of values ​​with any of the above values ​​as the upper or lower limit. The line spacing can refer to the straight-line distance between adjacent lines of the first texture 110. By using appropriate line spacing to adjust the direction of the reflected beam, the spatial distribution of the reflected beam of the first texture 110 when it is emitted from the shell can be more reasonable. The energy of the reflected beam is highly concentrated in the direction of mirror reflection and in a small angle nearby, forming a high gloss and low haze appearance, and a clear texture effect can be seen.

[0056] In one embodiment of this application, the depth of the first texture 110 can be 5 to 10 μm, including the endpoint value, and the line spacing of the first texture 110 can be less than 1 μm. The depth parameters and line spacing parameters of the first texture 110 can make the diffraction angle of light of different wavelengths different, resulting in different colors seen from different viewing angles, that is, producing an iridescent effect or structural color, with a dazzling visual effect, making the color of the product appearance richer.

[0057] In one embodiment of this application, the depth of the first texture 110 can be 5 to 10 μm, including the endpoint values, and the line spacing of the first texture 110 can be 1 to 9 μm. The reflected light beam will not produce an iridescent effect or structural color, and the product appearance is close to the natural color of a mirror-reflective object.

[0058] The linewidth of the first texture 110 can be less than or equal to 10 μm, but this application does not limit it and it depends on the specific circumstances. In some embodiments, the linewidth of the first texture 110 can satisfy the condition of being greater than 0.1 μm. In some embodiments, the linewidth of the first texture 110 can be 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, or a range of values ​​with any of the above values ​​as the upper or lower limit. The linewidth can refer to the thickness of the lines formed by the projection of the first texture 110 onto the first target surface 101.

[0059] The thickness of the first texture layer 100 is 15-20 μm, including the endpoint values, but this application does not limit it and it depends on the specific situation.

[0060] In one embodiment of this application, the material of the first texture layer 100 can be a photocurable adhesive well known to those skilled in the art, including but not limited to photoresist positive and photoresist negative adhesives, etc., and the first texture 110 can be formed on the surface of the photocurable adhesive by means of imprinting, photolithography, laser direct writing, etc. In one embodiment of this application, the photocurable adhesive is a transparent photocurable adhesive, so that the base color of the shell can be seen through the first texture layer 100.

[0061] The target layer 200 is disposed on the first texture layer 100.

[0062] The target layer 200 has a reflectivity greater than 0.25, which is used to provide a metallic luster and allow reflected light beams from the first texture layer 100 to pass through.

[0063] In this application, the metallic luster can be one of the grades representing luster intensity, which can refer to a reflectance R > 0.25, with a visual effect similar to the luster produced after metal polishing, like the luster presented by a smooth, clean metal surface, with a strong reflective feel. In some embodiments of this application, the reflectance of the target layer 200 is greater than 0.35, or greater than 0.45, or greater than 0.55, or greater than 0.65, or greater than 0.75, or greater than 0.85, or greater than 0.95, or a range of values ​​with any of the above values ​​as the upper or lower limit. In some embodiments of this application, the reflectance of the target layer 200 satisfies the condition of being less than 1. The reflectance can refer to the percentage of radiant energy reflected by an object relative to the total radiant energy, and can be detected by a reflectance measuring instrument. In some embodiments, the reflectance can be the reflectance when the incident light angle of the light source illuminating the sample surface is 60°.

[0064] In some embodiments of this application, the target layer 200 has a gloss level of 80-100 GU, including endpoint values, but this application is not limited to this and it depends on the specific circumstances. In some embodiments of this application, the target layer 200 has a gloss level of 80, 90, or 100 GU, or a range of values ​​where any of the above values ​​are the upper or lower limits. The gloss level can be detected using a gloss meter. In some embodiments, the measurement angle of the gloss level is 60°.

[0065] In some embodiments of this application, the target layer 200 allows the reflected light beam from the first texture layer 100 to pass through, making the visual effect of the first texture 110 visible through the target layer 200. In some embodiments of this application, the transmittance of the target layer 200 can be greater than 10%, or greater than 20%, or greater than 30%, or greater than 40%, or greater than 50%, or greater than 60%, or greater than 70%, or greater than 80%, or greater than 90%, or any of the above values ​​as an upper or lower limit. In some embodiments of this application, the transmittance of the target layer 200 satisfies the condition of being less than 1. The transmittance can be detected using a transmittance meter.

[0066] In some embodiments of this application, the target layer 200 can be a planar structure, that is, the surface of the target layer 200 facing the second texture layer 300 is not textured and is a smooth surface. The reflected light beam of the first texture layer 100 passes through the target layer 200, so that the visual effect of the first texture 110 is visible through the target layer 200 and has a metallic luster.

[0067] In some embodiments of this application, the target layer 200 may have a texture structure consistent with the first texture layer 100, that is, the surface of the target layer 200 facing the second texture layer 300 has a texture, which is a groove extending along a first direction. The size, position, line type, and arrangement of the groove are consistent with the first texture 110, that is, the projection of the groove on the first target surface 101 matches the first texture 110. Thus, the target layer 200 can achieve the same visual effect as the first texture 110. The reflected light beam of the first texture layer 100 passes through the target layer 200. Based on the same texture structure, when the reflected light beam passes through the target layer 200, it can be superimposed with the reflected light of the target layer 200, so that the visual effect of the first texture 110 is superimposed with the visual effect of the target layer 200, and the resulting light and dark gradient effect or dazzling effect is clearer and more visible, and has a metallic luster.

[0068] It should be noted that, in one possible case, the side of the target layer 200 that contacts the first texture layer 100 may have a texture structure consistent with the first texture 110, so that the target layer 200 and the first texture layer 100 can be tightly connected, and the reflected light from the first texture layer 100 can be directly transmitted through the target layer 200 without any refraction.

[0069] In some embodiments of this application, the target layer 200 can be a physical vapor deposition layer. This application does not impose special limitations on the method of setting the physical vapor deposition layer; it can be a method well-known to those skilled in the art, such as vacuum evaporation or magnetron sputtering. The physical vapor deposition layer can achieve different color effects and metallic textures by depositing film systems of different materials. In some embodiments of this application, the material of the physical vapor deposition layer can be selected from chromium, silicon oxide, titanium oxide, etc., and the metallic luster can be the metallic luster formed by the reflection of light on the surface of materials such as chromium, silicon oxide, and titanium oxide.

[0070] In some embodiments of this application, the thickness of the target layer 200 can be 0.1 to 0.2 μm, including the endpoint values. In some embodiments of this application, the thickness of the target layer 200 can be 0.1 μm, 0.12 μm, 0.14 μm, 0.16 μm, 0.18 μm, 0.2 μm, or any of the above values ​​as the upper or lower limit. However, this application does not limit this and it depends on the specific circumstances.

[0071] This application forms films of different thicknesses by depositing different materials on the surface of the first texture layer 110. Since different materials have different reflectivities, the design of films of different thicknesses can form different reflectivity curves and different color gloss effects, making the appearance of the shell rich and adjustable.

[0072] Furthermore, this application adds a second textured layer 300 to the surface of the target layer 200. The second textured layer 300 serves as the exterior of the casing, with its exterior surface 301 having a second texture 310. This second texture 310 allows reflected light beams from the first textured layer 100 and the target layer 200 to pass through and scatter. Due to this scattering, the reflectivity of the reflected light beams from the target layer 200 is reduced when it passes through the second textured layer 300, resulting in lower gloss and softer light, giving the product a matte finish. The second textured layer 300 prevents the metallic luster of the casing from being too bright, affecting the overall texture of the appearance. It also eliminates the need for surface treatment on the target layer 200, preventing localized damage to the target layer 200 from affecting the casing's appearance. Simultaneously, the second textured layer 300, located on the surface of the target layer 200, also protects the target layer 200 from peeling.

[0073] In some embodiments of this application, the reflectivity of the second texture layer 300 may be lower than that of the target layer 200, and the difference in reflectivity between the two may be greater than 0 and less than 1. In some embodiments of this application, the absolute value of the difference in reflectivity between the second texture layer 300 and the target layer 200 may be 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, or a range of values ​​with any of the above values ​​as the upper or lower limit. However, this application does not limit this, and it depends on the specific circumstances.

[0074] In some embodiments of this application, the second texture layer 300 has a certain transmittance, allowing reflected light beams from the first texture layer 100 and the target layer 200 to pass through. In some embodiments of this application, the transmittance of the second texture layer 300 can be greater than 10%, or greater than 20%, or greater than 30%, or greater than 40%, or greater than 50%, or greater than 60%, or greater than 70%, or greater than 80%, or greater than 90%, or any of the above values ​​as an upper or lower limit. In some embodiments of this application, the transmittance of the second texture layer 300 satisfies the condition of being less than 1. The transmittance can be detected using a transmittance meter.

[0075] In some embodiments of this application, the second texture 310 may be lines or pits arranged in a regular and / or irregular pattern on the surface of the second texture layer 300.

[0076] In some embodiments of this application, the lines may be discontinuous, meaning that the projection of the lines onto the first target surface 101 is a discontinuous line, causing scattering of the reflected light beams from the first texture layer 100 and the target layer 200. This application does not impose a specific limitation on the length of the lines; it depends on the specific circumstances. For example, it may be 0.1–10 μm, 0.1–5 μm, 0.1–1 μm, or other lengths.

[0077] In some embodiments of this application, the lines can be continuous lines, that is, the projection of the lines onto the first target surface 101 is a continuous line, which scatters the reflected light beams from the first texture layer 100 and the target layer 200. This application does not impose a special limitation on the length of the lines; it depends on the specific circumstances. For example, the length can be the same as or slightly shorter than the line length of the first texture 110.

[0078] The location of the lines is not specifically limited in this application and can be determined according to the specific circumstances. In some embodiments of this application, the projection of the lines onto the first target surface 101 is located at the bottom of the valley of the first texture 110, which can better scatter the reflected light beam.

[0079] This application does not impose any special limitation on the line type; it depends on the specific circumstances. In some embodiments of this application, the line can be a straight line or a curved line.

[0080] In some embodiments of this application, the depth of the line may be less than or equal to 30 μm. In some embodiments of this application, the depth of the line may be less than or equal to 20 μm, but this application is not limited to this and it depends on the specific circumstances. In some embodiments of this application, the depth of the line may be 5–30 μm, including the endpoint values.

[0081] In some embodiments of this application, the line spacing may be less than or equal to 50 μm, but this application does not limit this and it depends on the specific circumstances. In some embodiments of this application, the line spacing may be 10 μm, 20 μm, 30 μm, 40 μm or 50 μm, or a range of values ​​with any of the above values ​​as the upper or lower limit.

[0082] In some embodiments of this application, the line width may be less than or equal to 50 μm, but this application does not limit this and it depends on the specific circumstances. In some embodiments of this application, the line width may be 10 μm, 20 μm, 30 μm, 40 μm, or 50 μm, or a range of values ​​with any of the above values ​​as the upper or lower limit. The line width may refer to the thickness of the line formed by the projection of the line onto the first target surface 101.

[0083] The aforementioned lines can be achieved using surface treatment processes well known in the art, such as laser direct writing or etching to achieve a brushed effect, or other similar processes. This application does not impose any special limitations on this.

[0084] In some embodiments of this application, the second texture 310 may be regularly arranged and / or irregularly arranged pits.

[0085] This application does not specifically limit the size of the recess. In some embodiments of this application, the diameter of the recess is less than or equal to 50 μm, for example, it can be 5–50 μm, or 5–40 μm, including the endpoint values, or other dimensions. This application does not specifically limit the depth of the recess. In some embodiments of this application, the depth of the recess can be less than or equal to 30 μm, or less than or equal to 20 μm, but this application does not limit this; it depends on the specific circumstances. In some embodiments of this application, the depth of the recess can be 5–30 μm, or 5–20 μm, including the endpoint values. The depth of the recess refers to the vertical distance between the lowest point of the recess and the plane.

[0086] In some embodiments of this application, the pit is circular, or nearly circular, or other irregular in shape. This application does not limit this, and it depends on the specific circumstances.

[0087] The location of the pits is not limited in this application and depends on the specific circumstances. In some embodiments of this application, the projection of the pit onto the first target surface 101 is located at the bottom of the valley of the first texture 110, which can better scatter the reflected light beam. The location of adjacent pits is not limited in this application and depends on the specific circumstances. In some embodiments of this application, the straight-line distance between two adjacent pits can be less than or equal to 50 μm, but this application does not limit this and depends on the specific circumstances. In some embodiments of this application, the straight-line distance between two adjacent pits can be 10 μm, 20 μm, 30 μm, 40 μm, or 50 μm, or a range of values ​​with any of the above values ​​as the upper or lower limit.

[0088] The aforementioned pits can be achieved using surface treatment processes well known in the art, such as laser direct writing or etching processes to achieve a dotted effect, or other similar processes. This application does not impose any special limitations on this.

[0089] The thickness of the second texture layer 300 can be 15 to 20 μm, including the endpoint values, but this application does not limit it and it depends on the specific situation. In some embodiments, the thickness of the second texture layer 300 can be 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm, or a range of values ​​with any of the above values ​​as the upper or lower limit.

[0090] In embodiments of this application, the material of the second texture layer 300 can be a photocurable adhesive well-known to those skilled in the art, including but not limited to photoresist positive and photoresist negative adhesives, etc., and the second texture 310 can be formed on the surface of the photocurable adhesive by dotting or drawing. In one embodiment of this application, the photocurable adhesive is a transparent photocurable adhesive, so that the reflected light beams of the base color of the shell, the first texture layer 100, and the target layer 200 can be transmitted through the second texture layer 300, so that the visual effect formed by the base color of the shell, the first texture layer 100, and the target layer 200 is visible through the second texture layer 300.

[0091] This application sets up a structure of a first texture layer, a target layer, and a second texture layer. When light is incident, it is refracted by multiple layers of different film materials. Due to the different refractive indices of the different film materials, the angle of the incident light changes. After being reflected to the first texture, due to the line structure of the texture, the incident light and the reflected light form an interference phenomenon after being reflected at different angles to the final surface medium layer. When observed from different angles, different colorful iridescent effects will be formed.

[0092] like Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of the housing provided in the embodiment of this application. An ink layer 400 is provided on the side of the first texture layer 100 away from the target layer 200 to form the base color of the housing.

[0093] The color of the ink layer 400 is not specifically limited in this application, but depends on the specific circumstances. In the embodiments of this application, the color of the ink layer 400 can be silver, white, black or other colors.

[0094] This application does not impose a specific limitation on the thickness of the ink layer 400, but rather depends on the specific circumstances. In the embodiments of this application, the thickness of the ink layer 400 can be 10 to 20 μm, including the endpoint values. In some embodiments, the thickness of the ink layer 400 can be 10 μm, 15 μm, 20 μm, or a range of values ​​with any of the above values ​​as the upper or lower limit.

[0095] While forming the base color of the shell, the ink layer can also function like an adhesive, increasing the bonding force between the first texture layer 100 and the substrate layer, reducing the risk of the first texture layer 100 peeling off during use, and improving the product's service life.

[0096] This application does not impose any special limitation on the formation method of the ink layer, and can use applicable methods such as spraying and printing that are well known in the art.

[0097] like Figure 4 As shown, Figure 4This is a schematic diagram of the structure of the housing provided in the embodiment of this application. A substrate layer 500 is provided on the other side of the ink layer 400 to provide support.

[0098] In the embodiments of this application, the substrate layer 500 is a metal substrate, which can be made of aluminum alloy or magnesium alloy, etc. Aluminum alloy stampings have become a choice material for laptop shells due to their extremely high cost performance, while magnesium alloys have become one of the commonly used materials for thin and light laptops due to their low density. However, the surface treatment methods for aluminum alloys and magnesium alloys are usually relatively simple, making it difficult to achieve a qualitative improvement based on existing surface treatment methods, and also making it difficult to carry out diversified and customized appearance designs. The surface treatment method for aluminum alloys is generally sandblasting and anodizing. The differences between different brands and types of products can only be in the fineness of sandblasting and the color effect, making it difficult to have brand recognition. Magnesium alloys are mainly painted, but the painted appearance lacks the metallic texture and is difficult to achieve a qualitative improvement. The appearance effect of painted magnesium alloys does not show the corresponding material characteristics, and it is even more difficult to attract users in terms of appearance. Based on the above technical issues, this application proposes a technical solution by setting a first texture layer 100, a target layer 200, and a second texture layer 300. The three layers work together to retain the metallic texture of aluminum alloy or magnesium alloy while having a visual effect that changes with different viewing angles. This achieves diversity and personalized design of the appearance of aluminum alloy or magnesium alloy shells, resulting in high aesthetic appeal and brand recognition.

[0099] The thickness of the substrate layer 500 is not specifically limited in this application and can be determined according to the specific circumstances. In the embodiments of this application, the thickness of the substrate layer 500 is greater than or equal to 0.6 mm to meet the requirements of the shell support force.

[0100] This application also provides a preparation method for preparing the shell described in any of the above embodiments. For example... Figure 5 As shown, Figure 5 A flowchart of a preparation method provided in this application is included, the preparation method comprising:

[0101] The first texture is formed on the first target surface of the first texture layer by imprinting.

[0102] A target layer is set on the surface of the first texture layer;

[0103] A second texture layer is formed on the surface of the target layer, and the surface of the second texture layer is surface treated to form a second texture.

[0104] The reflected light beam from the first texture exits from the housing to present a first visual effect, wherein the brightness of the reflected light beam is different at different viewing angles;

[0105] The second texture allows reflected light beams from the first texture layer and the target layer to pass through and form scattering.

[0106] In some embodiments of this application, the first texture layer is a photocurable adhesive layer. The above-mentioned imprinting can be done by directly imprinting the texture on the surface of the photocurable adhesive using a photolithography machine. However, considering the high manufacturing cost of photolithography machines, in order to increase the service life of the mold and reduce costs, the mold with the first texture is called the master mold. After one or more UV transfers are performed on the master mold, a sub-mold is made. The sub-mold is used in actual production. The sub-mold can be used multiple times, which reduces the process cost and complexity.

[0107] Based on this, in some embodiments of this application, forming a first texture on the first target surface of the first texture layer by imprinting may include the following steps:

[0108] Provide a master mold with a first texture;

[0109] A sub-mold is provided, one side of which is coated with a light-curing adhesive;

[0110] The master mold and the sub-mold are bonded together with the side coated with light-curing adhesive. After transfer printing and curing, a texture opposite to the first texture is formed on the surface of the sub-mold.

[0111] The first texture is imprinted on the first target surface using the aforementioned sub-mold to form the first texture layer.

[0112] In some embodiments of this application, a grayscale lithography machine with nanometer-level pixels can be used for processing to ensure the precise size requirements of the first texture, so as to accurately achieve the first visual effect.

[0113] In some embodiments of this application, depending on the desired effect of the product appearance, the presentation of special characters such as logos can be achieved through two different effects of splicing the first texture.

[0114] Then, a target layer is set on the surface of the first texture layer. In some embodiments of this application, the target layer is a physical vapor deposition layer. The target layer can be deposited by physical vapor deposition processes well known in the art, including but not limited to vacuum evaporation or magnetron sputtering. This application does not make any special limitation in this regard.

[0115] In some embodiments of this application, the second texture layer is a photocurable adhesive layer. The photocurable adhesive can be applied to the surface of the target layer, and the surface of the photocurable adhesive can be treated to form the second texture. This application does not impose specific limitations on the surface treatment method; it can be a surface treatment method well-known to those skilled in the art, including but not limited to laser direct writing, etching, and other processes to achieve effects such as wire drawing and dotting.

[0116] In some embodiments of this application, the housing further includes an ink layer and / or a substrate layer. Based on this, this application provides a method for preparing the housing, comprising:

[0117] A photocurable adhesive is applied to the surface of the substrate layer, and the first texture is imprinted to form the first texture layer;

[0118] A physical vapor deposition layer is formed on the surface of the first textured layer;

[0119] A photocurable adhesive is applied to the surface of the physical vapor deposition layer, and a second texture is formed on the surface of the photocurable adhesive to obtain the shell.

[0120] Alternatively, the preparation method may include:

[0121] Print an ink layer on the surface of the substrate layer;

[0122] A photocurable adhesive is applied to the surface of the ink layer, and a first texture is imprinted to form a first texture layer;

[0123] A physical vapor deposition layer is formed on the surface of the first textured layer;

[0124] A photocurable adhesive is applied to the surface of the physical vapor deposition layer, and a second texture is formed on the surface of the photocurable adhesive to obtain the shell.

[0125] In some embodiments, the substrate layer is an aluminum alloy sheet. After grinding to ensure a smooth surface, ink printing can be performed directly, meeting the adhesion requirements. In other embodiments, the substrate layer is a magnesium alloy sheet, requiring a chemical forming process first, i.e., printing an ink layer on the surface of a chemical film to meet reliability requirements such as adhesion. For magnesium alloy die-cast products, additional coating and grinding are required after the chemical forming process to ensure precise flatness. This application does not impose special limitations on the chemical forming process and can be determined according to the material properties, including but not limited to the following steps:

[0126] 1. Cleaning: Clean the surface of the magnesium alloy to be treated to remove oil and impurities;

[0127] 2. Immersion: Place the magnesium alloy in a forming bath. The immersion time varies from 15 minutes to 1 hour depending on the requirements and process. This application does not limit this time.

[0128] 3. Cleaning: Remove the magnesium alloy from the forming bath and clean the surface.

[0129] 4. Drying: Place the cleaned magnesium alloy in a well-ventilated and dry place to allow it to dry completely.

[0130] This application also provides an electronic device, including:

[0131] Housing, which is part of the body of the electronic device;

[0132] The outer surface of the shell includes a first texture layer, a target layer, and a second texture layer;

[0133] The first target surface of the first texture layer has a first texture, and the reflected light beam of the first texture is emitted from the shell to present a first visual effect, wherein the brightness of the reflected light beam is different under different viewing angles;

[0134] The target layer has a reflectivity greater than 0.25 and allows the reflected light beam to pass through;

[0135] The surface of the second texture layer has a second texture, which allows reflected light beams from the first texture layer and the target layer to pass through and form scattering.

[0136] This application does not impose any special limitation on the electronic device mentioned, and it can be an electronic product such as a mobile phone, computer, or tablet.

[0137] In summary, this application provides a housing, a manufacturing method, and an electronic device. The housing's exterior surface exhibits unique visual effects through different layer and texture configurations. The housing includes a first texture layer, a target layer, and a second texture layer. The first target surface of the first texture layer has a first texture, and the reflected light beam from the first texture exits the housing, presenting a first visual effect. This first visual effect is characterized by varying brightness of the reflected light beam at different viewing angles, creating different light-dark gradients. The visual effect varies with the viewing angle. The target layer has a reflectivity greater than 0.25 and allows the reflected light beam to pass through, adding a metallic luster to the first visual effect. The exterior surface of the second texture layer has a second texture, which allows the reflected light beams from the first texture layer and the target layer to pass through and scatter, reducing the glossiness of the metallic luster and making the appearance softer. This enriches the housing's appearance and achieves various effects such as light and shadow, and iridescent colors. In particular, for metal housings, such as those made of aluminum alloy or magnesium alloy, compared to the commonly used painting methods for aluminum alloy and magnesium alloy, this method better reflects the metallic texture of the product, increases the flexibility of the appearance, and enhances the appearance of aluminum alloy and magnesium alloy.

[0138] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical areas between embodiments can be referred to interchangeably. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant details can be found in the description of the method area.

[0139] It should be noted that, in the description of this application, the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0140] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0141] To further illustrate this application, a detailed description is provided below with reference to embodiments. However, it should be understood that these descriptions are merely for further illustrating the features and advantages of this application and are not intended to limit the scope of the claims.

[0142] There are no special restrictions on the source of any raw materials used in this application; they may be purchased from the market or prepared using conventional methods known to those skilled in the art.

[0143] Figure 6 The process flow diagrams are for Examples 1 and 2.

[0144] Example 1

[0145] Step 1:

[0146] Ink printing: An ink layer with a thickness of 10μm is printed on the surface of the alloy material to form the base color of the product appearance. The alloy material is aluminum alloy with a layer thickness of 0.6mm.

[0147] Step 2:

[0148] Imprinting the first texture: Apply UV-curable adhesive (UV adhesive) to the surface of the ink layer, then use a sub-mold to roll and transfer the texture of the sub-mold onto the UV adhesive surface, and then perform UV curing to obtain the first texture layer with a thickness of 15μm, providing light and shadow direction and forming the first visual effect.

[0149] Among them, the first texture trend line on the surface of the first texture layer is an S-shaped streamline, with a texture depth of 9μm, a texture line width of 10μm, and a texture line spacing of 10μm.

[0150] Step 3:

[0151] Physical vapor deposition: A chromium layer with a thickness of 0.1 μm is deposited on the surface of the first texture layer using vacuum evaporation or magnetron sputtering. The physical vapor deposition layer can provide a metallic texture, enhance the metallic luster of the first texture, and make the texture effect clearer and more visible, together with the ink base color to form the final color effect of the product.

[0152] Step 4:

[0153] Imprinting the second texture: A UV-curable adhesive (15μm thick) is dripped onto the surface of the aforementioned chromium plating. After the surface is smoothed and cured, a laser direct-writing process is used to create a brushed texture on the UV adhesive surface. The brushed texture has a depth of 30μm, a line width of 50μm, and a line spacing of 50μm. This causes scattering when the reflected light beam passes through, appropriately increasing the haze, reducing the reflectivity, improving the appearance quality, and simultaneously improving the manufacturing yield.

[0154] The casing's appearance underwent performance testing. A pencil hardness test showed a result of 2H. A cross-cut adhesion test was performed, with 11 cuts made every 1mm. After 11 cuts, the casing met the 5B requirement. Immersion in 60℃ hot water for 3 hours, or exposure to high temperature and humidity, also met the 4B standard. It is also resistant to friction from eraser, alcohol, and acidic / alkaline sweat.

[0155] Figures 7-10 The images show the appearance of the housing prepared in this embodiment from different viewing angles.

[0156] in, Figure 7 This is an image of the casing prepared in this embodiment from a first viewing angle, where the first angle is a viewpoint 40-50° to the left of directly above the product, and the shooting height is 40cm. Figure 7 As shown, a gradient effect of light and shadow can be observed on the surface of the casing, with the light being brighter on the side of the casing closer to the pivot.

[0157] Figure 8 This is an image of the casing prepared in this embodiment from a second viewing angle. The second angle is a 70-80° viewing angle from directly above the product away from the axis of rotation, and the shooting height is 40cm. Figure 8As shown, after the visual angle changes, the light is brighter on the side of the shell away from the pivot, and darker on the side closer to the pivot, thus changing the overall visual effect of the shell.

[0158] Figure 9 This is an image of the casing prepared in this embodiment from a third viewing angle. The third angle is directly above the product (i.e., the shooting position is located on the central axis of the product), and the shooting height is 60cm. Figure 9 As shown, after the visual angle changes, the side of the shell away from the axis of rotation and the side closer to the axis of rotation are both brightly lit, while the light at the boundary turns dark.

[0159] Figure 10 This is an image of the casing prepared in this embodiment from a fourth viewing angle. The fourth angle is a 70-80° angle from directly above the product near the axis of rotation, with a shooting height of 40cm. Figure 10 As shown, the light dims on the side of the casing away from the pivot and the side closer to the pivot, while the boundary is bright.

[0160] Note: The angles mentioned above refer to the angle between the incident angle and the product's central axis during shooting.

[0161] Shooting height refers to the vertical distance between the shooting position and the casing.

[0162] Example 2

[0163] Step 1:

[0164] Ink printing: An ink layer with a thickness of 20μm is printed on the surface of the alloy material to form the base color of the product appearance. The alloy material is a magnesium alloy (surface treated by chemical formation) with a layer thickness of 0.7mm.

[0165] Step 2:

[0166] Imprinting the first texture: Apply UV-curable adhesive (UV adhesive) to the surface of the ink layer, then use a sub-mold to roll and transfer the texture of the sub-mold onto the UV adhesive surface, and then perform UV curing to obtain the first texture layer with a thickness of 20μm, which provides the direction of light and shadow and forms the first visual effect.

[0167] The first texture trend line on the surface of the first texture layer is an arc, with a texture depth of 10μm, a texture line width of 9μm, and a texture line spacing of 9μm.

[0168] Step 3:

[0169] Physical vapor deposition: A silicon oxide layer with a thickness of 0.2 μm is deposited on the surface of the first texture layer using vacuum evaporation or magnetron sputtering. The physical vapor deposition layer can provide a metallic texture, enhance the metallic luster of the first texture, and make the texture effect clearer and more visible, together with the ink base color to form the final color effect of the product.

[0170] Step 4:

[0171] Imprinting the second texture: A 20μm thick UV-curable adhesive is dripped onto the surface of the aforementioned silicon oxide coating. After the surface is smoothed and cured, an etching process is used to create dots on the UV adhesive surface. The dots are 25μm deep, 45μm in diameter, and spaced 45μm apart. This causes scattering when the reflected light beam passes through, appropriately increasing haze, reducing reflectivity, improving appearance quality, and simultaneously increasing manufacturing yield.

[0172] The casing's appearance underwent performance testing. A pencil hardness test showed a result of 2H. A cross-cut adhesion test was performed, with 11 cuts made every 1mm. After 11 cuts, the casing met the 5B requirement. Immersion in 60℃ hot water for 3 hours, or exposure to high temperature and humidity, also met the 4B standard. It is also resistant to friction from eraser, alcohol, and acidic / alkaline sweat.

[0173] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of this application. It should be noted that, for those skilled in the art, several improvements and modifications can be made to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A housing characterized by, include: First texture layer, target layer, and second texture layer; The first target surface of the first texture layer has a first texture, and the reflected light beam of the first texture is emitted from the shell to present a first visual effect, wherein the brightness of the reflected light beam is different under different viewing angles; The target layer has a reflectivity greater than 0.25 and allows the reflected light beam to pass through; The surface of the second texture layer has a second texture, which allows reflected light beams from the first texture layer and the target layer to pass through and form scattering.

2. The housing of claim 1, wherein The first texture is a groove extending along a first direction on the first target surface, and the first direction is parallel to the first target surface.

3. The housing of claim 2, wherein, In the first direction, at least a portion of the first texture is not located on the same straight line.

4. The housing according to claim 2, characterized in that, The depth of the first texture may be the same or different at different locations.

5. The housing according to claim 1, characterized in that, The second texture is lines or pits arranged in a regular and / or irregular pattern on the surface of the second texture layer; The second texture can reduce the gloss of the target layer.

6. The housing according to claim 5, characterized in that, The second texture layer is a photocurable adhesive layer; The thickness of the second texture layer is 15–20 μm; The depth of the texture is less than or equal to 20 μm; The line spacing of the texture is less than or equal to 50 μm.

7. The housing according to claim 1, characterized in that, The target layer is a physical vapor deposition layer; The target layer is used to provide a metallic luster.

8. The housing according to claim 1, characterized in that, An ink layer is provided on the side of the first texture layer away from the target layer.

9. The housing according to any one of claims 1 to 8, characterized in that, The housing includes: Substrate layer, ink layer, first texture layer, target layer, and second texture layer; The substrate layer is disposed on the side of the ink layer away from the first texture layer.

10. An electronic device, characterized in that, include: Housing, which is part of the body of the electronic device; The outer surface of the shell includes a first texture layer, a target layer, and a second texture layer; The first target surface of the first texture layer has a first texture, and the reflected light beam of the first texture is emitted from the shell to present a first visual effect, wherein the brightness of the reflected light beam is different under different viewing angles; The target layer has a reflectivity greater than 0.25 and allows the reflected light beam to pass through; The surface of the second texture layer has a second texture, which allows reflected light beams from the first texture layer and the target layer to pass through and form scattering.

Images