Metal decorative part, shell and electronic device

Abstract

A metal decorative part (104), a shell and an electronic device. At least part of a surface of the metal decorative part (104) is provided with an uneven sandy layer (110). A plurality of spaced recesses (111) are provided in the sandy layer (110). A raised top surface (112) is formed between two adjacent recesses (111). Each recess (111) comprises a recess bottom surface (111a) and recess side surfaces (111b) arranged on two sides of the recess bottom surface (111a), the glossiness of the recess bottom surface (111a) in the recess (111) being greater than that of the raised top surface (112).

Description

Metal trims, housings and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 24, 2023, with application number 202322858860.6 and application name “Metal ornaments, housings and electronic devices”, the entire contents of which are incorporated by reference in this disclosure. Technical Field

[0002] The present application relates to the technical field of decorations, and in particular to a metal decoration, a housing and an electronic device. Background Art

[0003] As people's living standards continue to improve, users have higher and higher requirements for the appearance of electronic devices, and electronic devices with personalized decorative textures are favored by everyone.

[0004] Currently, metal decorative parts have a dull luster due to their opaque characteristics, which results in poor decorative effects and a lack of competitiveness.

[0005] Summary of the Invention

[0006] The technical problem to be solved by the embodiments of the present application is to provide a metal ornament, a housing and an electronic device with good light and shadow reflection effects.

[0007] In a first aspect, the present application provides a metal decorative part, wherein at least a portion of the surface of the metal decorative part is provided with an uneven sandy layer;

[0008] The sandy layer is provided with a plurality of grooves arranged at intervals, and a convex top surface is formed between two adjacent grooves. The groove includes a groove bottom surface and groove side surfaces arranged on both sides of the groove bottom surface. The glossiness of the groove bottom surface is greater than the glossiness of the convex top surface.

[0009] In combination with the first aspect, in a possible embodiment, the glossiness of the groove side surface is greater than the glossiness of the convex top surface.

[0010] In combination with the first aspect, in a possible embodiment, the difference in gloss between the groove side surface and the convex top surface is at least 10 Gu, and the difference in gloss between the groove bottom surface and the convex top surface is at least 10 Gu.

[0011] In combination with the first aspect, in a possible embodiment, the glossiness difference between the groove side surface and the convex top surface is 40Gu-80Gu, and the glossiness difference between the groove bottom surface and the convex top surface is 40Gu-80Gu.

[0012] In conjunction with the first aspect, in one possible embodiment, the glossiness of the groove side surfaces and the groove bottom surfaces is independently 300-350 Gu, and the glossiness of the convex top surface is 220-280 Gu. The difference in glossiness of the groove bottom surface and the convex top surface within the groove can create a viewing angle difference between the light reflection from the groove bottom surface and the light reflection from the convex top surface, thereby enhancing the concave and convex three-dimensional effect of the metal ornament. The difference in glossiness of the groove side surfaces and the convex top surface within the groove can create a viewing angle difference between the light reflection from the groove side surfaces and the light reflection from the convex top surface, thereby enhancing the concave and convex three-dimensional effect of the metal ornament.

[0013] In conjunction with the first aspect, in one possible embodiment, the roughness of the groove side surfaces and the groove bottom surface is independently 0.416 μm to 0.436 μm, and the roughness of the convex top surface is 0.446 μm to 0.466 μm. The roughness of the groove bottom surface and the groove side surfaces are both less than that of the convex top surface, reducing the difficulty of the processing process. The groove can be formed by chemical polishing with an etching solution. The longer the chemical polishing time, the smaller the roughness of the groove bottom and groove side surfaces.

[0014] In combination with the first aspect, in a possible embodiment, the metal ornament is made of aluminum alloy.

[0015] In conjunction with the first aspect, in one possible embodiment, the distance between two adjacent grooves is 10 μm to 50 μm, the distance between two adjacent convex top surfaces is 10 μm to 50 μm, and the depth of the grooves is 5 μm to 15 μm. By controlling the depth of the grooves and the distance between two adjacent grooves, the light and shadow reflection of the metal ornament can be enhanced, making the decorative pattern on the metal ornament stand out more clearly.

[0016] In combination with the first aspect, in a possible embodiment, the depth of the groove is H, the distance between two adjacent grooves is D, and D / 8≤H≤D / 2.

[0017] In combination with the first aspect, in a possible embodiment, the groove side surface, the groove bottom surface and the convex top surface are all provided with dye. Providing dye in the metal ornament can make the metal ornament more beautiful.

[0018] In conjunction with the first aspect, in one possible embodiment, the groove bottom surface, the groove side surface, and the convex top surface are all provided with an anodic oxide film, and the anodic oxide film has micropores, each having a diameter of 5 nm to 20 nm, for accommodating the dye. Accommodating the dye in the micropores can reduce the likelihood of fading of the metal ornament.

[0019] In conjunction with the first aspect, in one possible embodiment, a transparent layer is provided on the surface of the anodized film facing away from the sandy layer, and the transparent layer seals the micropores. The transparent layer seals the dye in the micropores, thereby reducing the possibility of fading of the metal ornament.

[0020] In combination with the first aspect, in a possible embodiment, the groove side surface is directly connected to the convex top surface.

[0021] In a second aspect, the present application provides a shell comprising the metal ornament as described in the first aspect and a body, wherein a surface of the metal ornament away from the sandy layer is in contact with the body.

[0022] In a third aspect, the present application provides an electronic device, comprising a housing and a processor as described in the second aspect, wherein the processor is housed in the housing.

[0023] In the present application, the sandy layer has a plurality of grooves spaced apart, with a convex top surface formed between adjacent grooves. Each groove includes a bottom surface and side surfaces disposed on either side of the bottom surface, and the glossiness of the bottom and side surfaces of the grooves is greater than that of the convex top surface. The bottom, side, and convex top surfaces of the sandy layer form a decorative pattern, which can give the decorative pattern a stronger concave-convex three-dimensional visual experience. Because the glossiness of the bottom and side surfaces of the grooves is greater than that of the convex top surface, there is a difference in light reflection between the bottom and convex top surfaces, and there is a difference in light reflection between the side surfaces and the convex top surfaces, which can give the metal ornament a stronger light and shadow reflection, and can make the decorative pattern on the metal ornament stand out more clearly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0025] FIG1 is a schematic structural diagram of a first surface of a metal ornament before sandblasting provided in one embodiment of the present application.

[0026] FIG2 is a schematic structural diagram of a metal ornament provided in an embodiment of the present application in which a sandy layer is formed by sandblasting the first surface.

[0027] FIG3 is a schematic structural diagram of a sandy layer covered with photoresist in a metal ornament provided by an embodiment of the present application.

[0028] FIG4 is a structural schematic diagram of a metal ornament covered with photoresist provided by an embodiment of the present application, in which a portion of the photoresist is removed by laser engraving to expose a portion of the sandy layer.

[0029] FIG5 is a schematic structural diagram of further laser engraving the metal ornament in FIG4 to deepen the depth of the exposed sandy layer.

[0030] FIG6 is a schematic structural diagram of etching the exposed sandy layer of the metal ornament in FIG5 to form a groove.

[0031] FIG7 is a schematic structural diagram of a metal ornament covered with photoresist after stripping, provided in one embodiment of the present application.

[0032] FIG8 is a schematic diagram of the structure of the metal ornament after dyeing provided in one embodiment of the present application.

[0033] FIG9 is a schematic structural diagram of an electronic device provided in one embodiment of the present application.

[0034] FIG10 is a schematic structural diagram of a housing provided in an embodiment of the present application.

[0035] Explanation of the reference numerals: 100, first surface; 110, sandy layer; 111, groove; 111a, groove bottom; 111b, groove side; 112, convex top; 120, photoresist; 200, second surface; 1, electronic device; 10, housing; 102, processor; 104, metal ornament; 106, body. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0037] The present application provides an electronic device 1. The electronic device 1 includes a processor 102 and a housing 10. The housing 10 accommodates the processor 102. The housing 10 can protect the processor 102. If the electronic device 1 accidentally falls, the housing 10 can prevent the processor 102 from directly colliding with the ground and protect the processor 102. The housing 10 can serve as a decoration for the electronic device 1 to beautify the appearance of the electronic device 1. The electronic device 1 also includes a display screen (not shown). In one embodiment, the display screen can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. In one embodiment, the housing 10 surrounds the display screen.

[0038] The shell 10 may be made of metal. The shell 10 made of metal has higher structural strength and a more beautiful appearance. The shell 10 made of metal can adapt to more types of processing techniques.

[0039] Please refer to Figures 1 to 8. In the shell 10 provided in the present application, the shell 10 includes a metal ornament 104 and a main body 106, and the main body 106 and the metal ornament 104 are connected as a whole. The surface of the metal ornament 104 away from the sandy layer 110 is in contact with the main body 106. Please refer to Figures 1 and 2. A sandy layer 110 is provided on part of the surface of the metal ornament 104, and the sandy layer 110 is an uneven surface. In the present application, an uneven sandy layer 110 can be formed on part of the surface of the metal ornament 104 by sandblasting. Specifically, the metal ornament 104 includes a first surface 100 and a second surface 200 arranged opposite to each other in the thickness direction. Please refer to Figure 2. The first surface 100 is sandblasted to obtain an uneven sandy layer 110. The glossiness of the sandy layer 110 is relatively low, and it has an anti-glare (AG) effect. When sandblasting the metal ornament 104, the first surface 100 of the metal ornament 104 can be polished with a grinder, and then sandblasted with 80-400 mesh ceramic sand, glass beads or iron sand at 0.1 MPa-0.8 MPa to make the first surface 100 appear sandy.

[0040] In this application, gloss can be measured using a gloss meter. Gloss units (GU) are the measurement scale of a gloss meter. Gloss units are scaled based on a highly polished reference black glass with a defined refractive index and a specular reflectance of 100 GU at a specified angle.

[0041] Gloss is the ability of an object's surface to reflect light when illuminated. It is typically expressed as the reflectance of the sample in the specular (regular) direction relative to a reference surface multiplied by 100: G = 100R / R. In this formula, R represents the reflectance of the sample surface, and / R represents the reflectance of the reference plate. Using perfectly polished black glass as a reference standard, the refractive index of sodium D rays is 1.568. For each geometric optical condition, specular gloss is calibrated to 105 gloss units. Therefore, different values ​​represent the degree of gloss of the surface. If the result is between 10 and 70 GU, the coating is considered semi-gloss and should be measured at this angle. If the result is less than 10 GU, the product is considered low-gloss and should be measured at 85°. If the result is greater than 70 GU, the product is considered high-gloss and should be measured at 20°.

[0042] Specifically, the sandy layer 110 has a plurality of grooves 111 spaced apart. A convex top surface 112 is formed between adjacent grooves 111. Each groove 111 includes a bottom surface 111a and side surfaces 111b disposed on either side of the bottom surface 111a. In one possible embodiment, the glossiness of the bottom surface 111a is greater than that of the convex top surface 112. In another possible embodiment, the glossiness of both the bottom surface 111a and the side surfaces 111b of the groove 111 is greater than that of the convex top surface 112. When the glossiness of both the bottom surface 111a and the side surfaces 111b of the groove 111 is greater than that of the convex top surface 112, users will perceive a visual difference between the grooves 111 and the convex top surface 112 from all viewing angles. In practical applications, the decorative pattern formed by the bottom surface 111a, side surfaces 111b, and convex top surface 112 in the sandy layer 110 can provide a more pronounced, three-dimensional visual experience. Groove side surface 111b is directly connected to convex top surface 112. Because the glossiness of groove bottom surface 111a and groove side surface 111b in groove 111 is greater than that of convex top surface 112, there is a difference in light reflection between groove bottom surface 111a and convex top surface 112, and there is a difference in light reflection between groove side surface 111b and convex top surface 112. This allows metal ornament 104 to reflect light and shadow in a pattern, which can provide metal ornament 104 with stronger light and shadow reflection and make the decorative pattern on metal ornament 104 stand out more clearly. Metal ornament 104 also includes a non-patterned area. The non-patterned area does not need to have the texture structure of groove 111 and convex top surface 112. This can create a sharp contrast between the non-patterned area and the pattern, greatly improving the visual effect of the pattern.

[0043] Generally speaking, the lower the roughness of the metal surface, the higher the glossiness of the metal surface. In order to make the glossiness of the groove bottom surface 111a and the groove side surface 111b in the groove 111 greater than the glossiness of the convex top surface 112, the roughness of the groove bottom surface 111a and the groove side surface 111b of the groove 111 can be made smaller than the roughness of the convex top surface 112.

[0044] The surface of an object is not absolutely smooth. Its specular reflectivity (i.e., glossiness) depends not only on the object's refractive index but also on the surface roughness. When the surface roughness is greater than the wavelength of the incident light, the surface produces diffuse reflection in addition to specular reflection. The rougher the surface, the greater the diffuse reflection, the correspondingly lower the specular reflection and the weaker the gloss.

[0045] Surface roughness measurement methods can be broadly categorized into contact and non-contact methods. Contact methods include comparison, die impression, and stylus methods. Non-contact methods include light sectioning, real-time holography, speckle pattern analysis, astigmatism, optical heterodyning, AFM, and optical sensors.

[0046] The stylus surface roughness meter is the most commonly used, most convenient and most reliable surface roughness meter, and has always been the basis for the formulation of national standards and international standards in various countries. According to the different principles of the sensor, the stylus roughness meter can be divided into inductive, piezoelectric, photoelectric, laser and grating types, and can also be divided into guide head type and non-guide head type. The guide head type roughness meter is only used to measure surface roughness, while the non-guide head type roughness meter can be used to measure surface waviness and surface geometry in addition to measuring surface roughness. In the metal ornament 104 provided in the present application, in order to make the texture structure in the metal ornament 104 clearer, the difference in glossiness between the groove side surface 111b and the convex top surface 112 is at least 10Gu, and the difference in glossiness between the groove bottom surface 111a and the convex top surface 112 is at least 10Gu. In the present application, the difference in glossiness between the groove side surface 111b and the convex top surface 112 is 40Gu-80Gu, and the difference in glossiness between the groove bottom surface 111a and the convex top surface 112 is 40Gu-80Gu. Specifically, the roughness of the groove side surface 111b and the groove bottom surface 111a is independently 0.416μm-0.436μm, and the roughness of the convex top surface 112 is 0.446μm-0.466μm. The glossiness of the groove bottom surface 111a and the groove side surface 111b in the groove 111 is independently 300Gu-350Gu, and the glossiness of the convex top surface 112 is 220Gu-280Gu. The glossiness of the groove bottom surface 111a in the groove 111 is different from that of the convex top surface 112, which can create a viewing angle difference between the light reflection of the groove bottom surface 111a and the light reflection of the convex top surface 112, thereby improving the concave and convex three-dimensional effect of the metal ornament 104. The glossiness of the groove side surface 111 b and the convex top surface 112 in the groove 111 are different, which can make the light reflection of the groove side surface 111 b and the light reflection of the convex top surface 112 have a different viewing angle, thereby improving the concave and convex three-dimensional effect of the metal ornament 104.

[0047] The roughness of the groove bottom surface 111a and the groove side surface 111b is less than the roughness of the convex top surface 112, which reduces the difficulty of the processing technology and can be chemically polished by etching solution to form the groove 111. The longer the chemical polishing time, the smaller the roughness of the groove bottom surface 111a and the groove side surface 111b.

[0048] In the metal ornament 104 provided in the present application, please refer to Figure 3. In order to form a groove 111 in the sandy layer 110, the sandy layer 110 is covered with one of photoresist 120, ink or glue. Among them, the bonding force between the photoresist 120 and the metal ornament 104 is relatively good, and the surface of the photoresist 120 facing away from the sandy layer 110 is set flat. The thickness of the photoresist 120 is 8μm-12μm. After the photoresist 120 is evenly covered on the sandy layer 110, it is solid-baked at a temperature of 100℃-180℃ for 20 minutes to 60 minutes, so that the photoresist 120 is firmly covered on the sandy layer 110. A layer of photoresist 120 is coated on the sandy layer 110 of the metal ornament 104. The photoresist 120 has fine molecules and good bonding force with the product. It will not produce burrs after laser engraving and is not easy to fall off after etching. The process does not require film tearing, is simple to operate, and has low cost.

[0049] Referring to Figures 4, 5, and 6, after the photoresist 120 covers the sandy layer 110, the photoresist 120 is laser-engraved to remove a portion of the photoresist 120 to expose the sandy layer 110. Laser engraving is first used to carve a texture on the photoresist 120, and the location of the metal ornament 104 where the laser engraving is performed can be partially lowered (the exposed sandy layer 110 after laser engraving can be recessed toward the second surface 200). Further etching can be added later to form a deeper texture effect, and the glossiness of the etched area is higher than that of the non-etched area. The exposed sandy layer 110 is etched to form grooves 111. Normal photoresist 120 is used for exposure and development, and the photosensitivity and acid resistance of the photoresist 120 need to be adjusted. The more complex the composition, the greater the impact on exposure, and the better the acid resistance, the more difficult it is to expose. The laser engraving process has no requirements on the photosensitivity of the photoresist 120 , and can infinitely improve the acid resistance of the photoresist 120 . Laser engraving can be performed directly on the photoresist 120 to remove part of the photoresist 120 .

[0050] In the metal ornament 104 provided herein, the etching solution used to etch the sandy layer 110 is a mixture of 55%-75% phosphoric acid, 5%-15% nitric acid, and 5%-20% sulfuric acid, or a mixture of hydrofluoric acid and sulfuric acid. The metal ornament 104 is etched to form grooves 111. The depth of the grooves 111 formed by etching is 5 μm-15 μm, the distance between adjacent grooves 111 is 10 μm-50 μm, and the distance between adjacent convex top surfaces 112 is 10 μm-50 μm.

[0051] The depth of the groove 111 is H. The distance between two grooves 111 is D. D / 8 ≤ H ≤ D / 2. By controlling the depth of the groove 111 and the distance between two adjacent grooves 111, the light and shadow reflection of the metal ornament 104 can be enhanced, making the decorative pattern on the metal ornament 104 stand out more clearly.

[0052] In the metal ornament 104 provided in the present application, the longer the sandy layer 110 exposed after laser engraving of the metal ornament 104 is chemically polished by etching solution, the lower the roughness of the bottom surface 111a and the side surface 111b of the groove 111 formed by chemical polishing. In this way, the roughness of the bottom surface 111a and the side surface 111b of the groove 111 can be made lower than the roughness of the convex top surface 112, thereby controlling the glossiness of the bottom surface 111a and the side surface 111b of the groove 111.

[0053] After the sandy layer 110 is etched with an etching solution to form the grooves 111 , a neutralization treatment is performed with 200 ml / L-300 ml / L of nitric acid at 15° C.-25° C. for 10 seconds-20 seconds.

[0054] 7 , after the neutralization treatment, the photoresist 120 on the metal decorative part 104 is stripped. Specifically, a neutral stripping agent is used to remove the photoresist 120 covering the metal decorative part 104 to expose the convex top surface 112 .

[0055] In the metal decorative part 104 provided herein, the material of the metal decorative part 104 is aluminum alloy. Aluminum alloy metal has high structural strength and is relatively lightweight. However, aluminum alloy substrates are not resistant to acid and alkali corrosion. By using a neutral stripping agent to strip the photoresist 120 in the metal decorative part 104, the negative effects of stripping the photoresist 120 on the metal decorative part 104, such as corrosion and poor absorption, can be reduced.

[0056] After the photoresist 120 in the metal ornament 104 passes through a neutral stripping agent, it is rinsed with deionized water at least once and then dried in a drying oven at 60°C-80°C. The drying time in the drying oven is generally 8-30 minutes, resulting in the cleaned and dried metal ornament 104. Anodizing the sandy layer 110 of the metal ornament 104 forms an oxide film on the sandy layer 110 of the metal ornament 104. The surface of the oxide film forms dense micropores with a diameter of 5nm-20nm. The depth of the micropores is much greater than their diameter, and the depth of the micropores is 300-700 times the diameter of the micropores.

[0057] 8 , after the metal ornament 104 is anodized, the sandy layer 110 of the metal ornament 104 is dyed.

[0058] After dyeing the metal ornament 104 , the metal ornament 104 is sealed. Specifically, the metal ornament 104 is soaked in chemicals to generate a transparent film that can seal each micropore, thereby sealing the dye in the micropores, reducing the possibility of fading of the metal ornament 104 .

[0059] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0060] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0061] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0063] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A metal ornament (104), characterized in that: At least part of the surface of the metal ornament (104) is provided with an uneven sandy layer (110); The sandy layer (110) is provided with a plurality of grooves (111) arranged at intervals, a convex top surface (112) is formed between two adjacent grooves (111), the grooves (111) include a groove bottom surface (111a) and groove side surfaces (111b) arranged on both sides of the groove bottom surface (111a), and the glossiness of the groove bottom surface (111a) is greater than the glossiness of the convex top surface (112).

2. The metal ornament (104) according to claim 1, characterized in that: The glossiness of the groove side surface (111b) is greater than the glossiness of the convex top surface (112).

3. The metal ornament (104) according to claim 2, characterized in that: The difference in glossiness between the groove side surface (111b) and the convex top surface (112) is at least 10Gu, and the difference in glossiness between the groove bottom surface (111a) and the convex top surface (112) is at least 10Gu.

4. The metal ornament (104) according to claim 3, characterized in that: The difference in glossiness between the groove side surface (111b) and the convex top surface (112) is 40Gu-80Gu, and the difference in glossiness between the groove bottom surface (111a) and the convex top surface (112) is 40Gu-80Gu.

5. The metal ornament (104) according to claim 1, characterized in that: The glossiness of the groove side surface (111b) and the groove bottom surface (111a) are independently 300Gu-350Gu, and the glossiness of the convex top surface (112) is 220Gu-280Gu.

6. The metal ornament (104) according to claim 1, characterized in that: The roughness of the groove side surface (111b) and the groove bottom surface (111a) are independently 0.416 μm-0.436 μm, and the roughness of the convex top surface (112) is 0.446 μm-0.466 μm.

7. The metal decorative part (104) according to any one of claims 1 to 6, characterized in that: The material of the metal decorative part (104) is aluminum alloy.

8. The metal decorative part (104) according to any one of claims 1 to 6, characterized in that: The spacing distance between two adjacent grooves (111) is 10 μm-50 μm, the spacing distance between two adjacent convex top surfaces (112) is 10 μm-50 μm, and the depth of the grooves (111) is 5 μm-15 μm.

9. The metal ornament (104) according to claim 8, characterized in that: The depth of the groove (111) is H, the distance between two adjacent grooves (111) is D, and D / 8≤H≤D / 2.

10. The metal ornament (104) according to claim 1, characterized in that: The groove side surface (111b), the groove bottom surface (111a) and the convex top surface (112) are all provided with dye.

11. The metal ornament (104) according to claim 10, characterized in that: The groove bottom surface (111a), the groove side surface (111b) and the convex top surface (112) are all provided with anodized films, and the anodized films are provided with micropores, the diameter of the micropores is 5nm-20nm, and the micropores are used to accommodate the dye.

12. The metal ornament (104) according to claim 11, characterized in that: A transparent layer is provided on the surface of the anodized film facing away from the sandy layer (110), and the transparent layer seals the micropores.

13. The metal decorative part (104) according to any one of claims 1 to 12, characterized in that: The groove side surface (111b) is directly connected to the convex top surface (112).

14. A housing (10), characterized in that: The invention comprises a metal decorative piece (104) according to any one of claims 1 to 13 and a body (106), wherein a surface of the metal decorative piece (104) away from the sandy layer (110) is in contact with the body (106).

15. An electronic device (1), characterized in that: The electronic device (1) comprises a housing (10) according to claim 14 and a processor (102), wherein the processor (102) is accommodated in the housing (10).

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