Plastic key, electronic equipment and manufacturing method of plastic key

Abstract

The invention provides a plastic key, electronic equipment and a manufacturing method of the plastic key, relates to the technical field of electronic equipment, and is used for solving the problem that the plastic key is relatively low in texture and delicate degree. The plastic key comprises a key body, a metal film layer and a matte finish paint layer. The surface of the key body is provided with a first area and a second area, the first area is arranged around the second area, and at least the first area is polished. The metal film layer covers the surface of the key body. The matte finish paint layer is located on the side, away from the key body, of the metal film layer and at least covers the second area. By arranging the metal film layer, the plastic button can present a metal texture. According to the plastic key, the first area is polished, and the matte finish paint layer at least covers the second area, so that the plastic key can present the effect of integrating gloss and matte, and the texture and the delicacy of the plastic key are improved. The plastic keys are made of plastic materials, and compared with keys made of metal materials, the cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, and in particular to a plastic key, an electronic device, and a manufacturing method of the plastic key. BACKGROUND

[0002] At present, electronic devices such as mobile phones and tablet computers are generally provided with keys such as on-off keys or volume keys to facilitate the on-off or volume adjustment of the electronic devices. In related technologies, the keys of the electronic devices include metal keys and plastic keys, and the plastic keys are more popular than the metal keys due to their low cost and low weight. However, the plastic keys are made of plastic materials, and thus have the defect of low texture and delicacy. SUMMARY

[0003] Embodiments of the present application provide a plastic key, an electronic device, and a manufacturing method of the plastic key, to solve the problem of low texture and delicacy of the plastic key.

[0004] To achieve the above-mentioned purpose, embodiments of the present application adopt the following technical solutions:

[0005] In a first aspect, a plastic key is provided. The plastic key includes a key body, a metal film layer, and a matte finish layer. The surface of the key body has a first region and a second region, the first region is arranged around the second region, and at least the first region is subjected to polishing treatment. The metal film layer covers the surface of the key body. The matte finish layer is located on the side of the metal film layer away from the key body, and the matte finish layer covers at least the second region.

[0006] The metal film layer is arranged to make the plastic key present a metallic texture. The first region is subjected to polishing treatment, and the matte finish layer covers at least the second region, so that the plastic key can present a light-matte effect, that is, the plastic key can simultaneously present a highlight effect and a matte effect, thereby improving the texture and delicacy of the plastic key. Moreover, the plastic key is made of plastic material, which can reduce the cost compared with the key made of metal material.

[0007] In a possible implementation manner of the first aspect, the matte finish layer covers the first region and the second region. That is, the first region does not need to be subjected to shielding treatment during the preparation of the matte finish layer, which can improve the production efficiency.

[0008] In a possible implementation manner of the first aspect, the second region is provided with a texture pattern. The texture pattern can play a role in light extinction, so that the matte effect of the second region is stronger, to make the light-matte difference between the first region and the second region larger, and the light-matte effect more obvious. Moreover, the texture pattern provided on the second region can also make the plastic key look more textured and delicate.

[0009] In a possible implementation manner of the first aspect, the texture pattern comprises at least one of a CD texture, a spark texture or a wire-drawing texture. The CD texture is a kind of texture similar to a CD disc, and the CD texture can make the plastic key look more high-end and textured. The spark texture is usually composed of a series of curves, and the spark texture can produce a gorgeous texture effect and improve the texture of the plastic key. The wire-drawing texture is usually composed of a series of straight lines, and the wire-drawing texture can make the plastic key look more metallic.

[0010] In a possible implementation manner of the first aspect, the plastic key further comprises a surface treatment layer, and the surface treatment layer is arranged between the metal film layer and the surface of the key body. The surface treatment layer is used to fill and cover the defects on the surface of the key body, so as to form a relatively flat and smooth plane, facilitate the subsequent preparation of the metal film layer, and make the effect of the metal film layer better.

[0011] In a possible implementation manner of the first aspect, the thickness of the surface treatment layer is greater than or equal to 3 μm. The thickness of the surface treatment layer is relatively large, so that the surface treatment layer can fill and cover the defects on the surface of the key body, and the defects on the surface of the key body can still be observed after the surface treatment layer is arranged.

[0012] In a possible implementation manner of the first aspect, the second region is provided with the texture pattern, and the thickness of the surface treatment layer is less than the texture depth of the texture pattern. The thickness of the surface treatment layer is prevented from being too large to fill the texture pattern, so that the texture effect is covered.

[0013] In a possible implementation manner of the first aspect, the texture depth of the texture pattern is H1, and the thickness of the surface treatment layer is H2, and H2≤2 / 3H1. The thickness of the surface treatment layer is more reasonable, the metal film layer and the matte topcoat layer are further arranged on the surface treatment layer, H2≤2 / 3H1 is set, a certain space allowance is left, and the metal film layer and the matte topcoat layer are prevented from filling the texture pattern.

[0014] In a possible implementation manner of the first aspect, the plastic key further comprises an adhesion-promoting layer, and the adhesion-promoting layer is arranged between the surface treatment layer and the surface of the key body. The adhesion-promoting layer is used to improve the adhesion between the surface treatment layer and the key body, so as to improve the bonding force between the surface treatment layer and the key body, and make the connection between the surface treatment layer and the key body more stable and reliable.

[0015] In a possible implementation manner of the first aspect, the plastic key further comprises a color paint layer, and the color paint layer is arranged between the metal film layer and the matte topcoat layer. The color paint layer is arranged to make the plastic key present different color effects, so that the appearance of the plastic key is more beautiful, and the texture and delicacy of the plastic key are improved.

[0016] In one possible implementation of the first aspect, the material of the matte topcoat layer includes matting powder and resin.

[0017] Resin is used to bind matting powder and other materials together to form a uniform and dense coating. On one hand, matting powder gives the matte finish a matte effect; on the other hand, it increases the viscosity of the matte finish and reduces its flowability, allowing the matte finish to be evenly distributed on the surface of the button body, thus helping to reduce the problem of edge buildup in the matte finish layer.

[0018] In one possible implementation of the first aspect, the content of matte powder in the matte finish layer material is greater than or equal to 20% and less than or equal to 30%. Controlling the matte powder content in the matte finish layer material to be greater than or equal to 20% and less than or equal to 30% makes the matte effect in the second area more pronounced, while the first area still exhibits a high-gloss effect after the matte finish layer is applied, thus improving the overall gloss-matte effect of the plastic button. Furthermore, compared to solutions with a matte powder content of less than 20%, controlling the matte powder content in the matte finish layer material to be greater than or equal to 20% and less than or equal to 30% ensures moderate fluidity of the matte finish layer, allowing it to be evenly distributed on the surface of the button body. The first area, located outside the second area, has better paint adhesion, and the matte finish layer on the first area has better wear resistance, preventing uneven distribution of the matte finish layer from reducing the aesthetics of the plastic button.

[0019] In one possible implementation of the first aspect, the thickness of the matte topcoat layer is greater than or equal to 15 μm and less than or equal to 30 μm. This larger thickness of the matte topcoat layer provides better matte finish for the second region, and avoids excessive matte powder resulting in an overly thick matte topcoat layer that also causes the first region to have a matte effect.

[0020] In one possible implementation of the first aspect, the content of matte powder in the material of the matte topcoat layer is greater than or equal to 20% and less than or equal to 25%; the thickness of the matte topcoat layer is greater than or equal to 20 μm and less than or equal to 30 μm.

[0021] If the content of matte powder is greater than or equal to 20% and less than or equal to 25%, and the content of matte powder is relatively low, then the thickness of the matte topcoat layer can be relatively large, which can be greater than or equal to 20μm and less than or equal to 30μm, in order to improve the matte effect.

[0022] In one possible implementation of the first aspect, the content of matte powder in the material of the matte topcoat layer is greater than or equal to 25% and less than or equal to 30%; the thickness of the matte topcoat layer is greater than or equal to 15 μm and less than or equal to 20 μm.

[0023] The content of matte powder is greater than or equal to 25% and less than or equal to 30%. If the content of matte powder is relatively high, the thickness of the matte topcoat layer can be relatively small. The thickness of the matte topcoat layer can be greater than or equal to 15μm and less than or equal to 20μm, in order to avoid excessive matte powder causing the first area to also have a matte effect.

[0024] In one possible implementation of the first aspect, the gloss level of the first region is greater than or equal to 75 GU. This results in a high gloss level in the first region, so that even if a matte topcoat layer is applied to the first region, the first region still exhibits a high-gloss effect compared to the second region.

[0025] In one possible implementation of the first aspect, the gloss level of the second region is greater than or equal to 30 GU and less than or equal to 50 GU. This allows the second region to have a better metallic texture, and the gloss level difference between the second region and the first region is moderate, so that the second region and the first region can present a glossy-matte integrated effect.

[0026] Secondly, an electronic device is also provided, the electronic device including a frame and a plastic button, the frame having a mounting port; the plastic button is a plastic button as described above, the plastic button is disposed in the mounting port, and the second area faces outward from the frame.

[0027] Since the electronic device provided in this application includes the plastic button of any of the technical solutions in the first aspect above, the two can solve the same technical problem and achieve the same effect.

[0028] Thirdly, a method for manufacturing a plastic button is also provided, comprising: providing a button body, the surface of which has a first region and a second region, the first region surrounding the second region, and polishing at least the first region; depositing a metal film layer on the surface of the button body; and depositing a matte paint layer on the side of the metal film layer away from the surface of the button body, the matte paint layer at least covering the second region. By setting the metal film layer, the plastic button acquires a metallic-like texture and a metallic luster, thereby improving the texture and refinement of the plastic button.

[0029] The matte finish layer serves two purposes. First, it provides wear-resistant protection, preventing the metal coating from wearing off and extending its lifespan. Second, it creates a matte finish. The matte finish layer must cover at least the second area, giving it a matte appearance. Because the first area is polished, its gloss level is higher than the second. Therefore, regardless of whether the matte finish layer covers both areas, or only the second area, there will still be a difference in gloss between them. The first area will have a high-gloss finish relative to the second, while the second area will have a matte finish relative to the first. This allows the plastic button to achieve a balanced gloss and matte effect, enhancing its texture and sophistication.

[0030] In one possible implementation of the third aspect, before setting the metal film layer on the surface of the button body, the manufacturing method further includes: setting a textured pattern on the second region.

[0031] The second area can be decorated with a textured pattern. This textured pattern acts as a matte finish, enhancing the overall matte effect and creating a greater contrast between the glossy and matte finishes of the first and second areas, resulting in a more pronounced unified glossy and matte effect. Furthermore, adding a textured pattern to the second area also makes the plastic buttons appear more premium and refined.

[0032] In one possible implementation of the third aspect, before setting the metal film layer on the surface of the button body, the manufacturing method further includes setting a surface treatment layer on the surface of the button body.

[0033] The surface treatment layer can be formed by spraying. This layer fills in and covers defects on the surface of the button body, creating a smoother, flatter surface that facilitates subsequent metal film preparation, resulting in a better metal film finish.

[0034] In one possible implementation of the third aspect, before applying a surface treatment layer to the surface of the button body, the manufacturing method further includes applying an adhesion-promoting layer to the surface of the button body.

[0035] An adhesion-enhancing layer can be formed by spraying. This layer improves the adhesion between the surface treatment layer and the button body, thereby increasing the bonding strength and making the connection between them more stable and reliable.

[0036] In one possible implementation of the third aspect, after a metal film layer is applied to the surface of the button body, the manufacturing method further includes applying a paint layer to the side of the metal film layer facing away from the button body.

[0037] Color paint layers can be formed by spraying. By adding color paint layers, plastic buttons can present different color effects, making the plastic buttons more aesthetically pleasing and improving their texture and sophistication. Attached Figure Description

[0038] Figure 1 A perspective view of an electronic device provided in an embodiment of this application;

[0039] Figure 2 An exploded view of an electronic device provided in an embodiment of this application;

[0040] Figure 3 An exploded view of a plastic button and frame provided in an embodiment of this application;

[0041] Figure 4 This is a schematic diagram of the connection structure between a plastic button and a frame provided in an embodiment of this application;

[0042] Figure 5 for Figure 4 A cross-sectional schematic diagram;

[0043] Figure 6 This is a schematic diagram of another connection structure between a plastic button and a frame provided in an embodiment of this application;

[0044] Figure 7 for Figure 6 A cross-sectional schematic diagram;

[0045] Figure 8 A cross-sectional schematic diagram of a plastic button provided in an embodiment of this application;

[0046] Figure 9 A schematic diagram illustrating another connection structure between a plastic button and a frame provided in an embodiment of this application;

[0047] Figure 10 for Figure 9 A cross-sectional schematic diagram;

[0048] Figure 11 A cross-sectional schematic diagram of another plastic button provided in an embodiment of this application;

[0049] Figure 12 A cross-sectional schematic diagram of another type of plastic button provided in an embodiment of this application;

[0050] Figure 13 A cross-sectional schematic diagram of another type of plastic button provided in an embodiment of this application;

[0051] Figure 14 This is a cross-sectional schematic diagram of a matte topcoat layer provided in an embodiment of this application;

[0052] Figure 15 This is a schematic diagram of the structure of a plastic button provided in an embodiment of this application;

[0053] Figure 16 This is a schematic diagram of another plastic button structure provided in an embodiment of this application;

[0054] Figure 17 This is a schematic diagram of the structure of another plastic button provided in an embodiment of this application;

[0055] Figure 18 A cross-sectional schematic diagram of another type of plastic button provided in an embodiment of this application;

[0056] Figure 19 A cross-sectional schematic diagram of another type of plastic button provided in an embodiment of this application;

[0057] Figure 20 for Figure 19 Enlarged view of point A in the middle;

[0058] Figure 21 A cross-sectional schematic diagram of another type of plastic button provided in an embodiment of this application;

[0059] Figure 22 A cross-sectional schematic diagram of another type of plastic button provided in an embodiment of this application;

[0060] Figure 23 A flowchart illustrating a method for manufacturing a plastic button, as provided in an embodiment of this application;

[0061] Figure 24 A schematic diagram illustrating the steps of a method for manufacturing a plastic button according to an embodiment of this application;

[0062] Figure 25 A schematic diagram illustrating the steps of another method for manufacturing a plastic button according to an embodiment of this application;

[0063] Figure 26 A schematic diagram illustrating the steps of another method for manufacturing a plastic button according to an embodiment of this application;

[0064] Figure 27 This is a schematic diagram illustrating the steps of another method for manufacturing a plastic button according to an embodiment of this application. Detailed Implementation

[0065] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0066] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0067] This application provides an electronic device, which can be a portable electronic device or other types of electronic devices. For example, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a smartwatch, etc. For ease of explanation, the following description uses a mobile phone as an example.

[0068] Please see Figure 1 , Figure 1 This is a three-dimensional schematic diagram of an electronic device 100 provided in an embodiment of this application. As can be seen from the above, in this embodiment, the electronic device 100 is a mobile phone, and the electronic device 100 can have an approximately rectangular plate-like structure.

[0069] For ease of description below, an XYZ coordinate system is established, defining the width direction of electronic device 100 as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. It is understood that... Figure 1 The electronic device 100 is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 1 Restrictions.

[0070] Please see Figure 2 , Figure 2 This is an exploded view of an electronic device 100 provided in an embodiment of this application. The electronic device 100 may include a screen assembly 10, a back cover 20, a mid-frame 30, and buttons 50. The screen assembly 10 can be used to display images, videos, etc. The screen assembly 10 may include a light-transmitting cover 11 and a display screen 12. The light-transmitting cover 11 and the display screen 12 are stacked. The light-transmitting cover 11 mainly serves to protect the display screen 12 and prevent dust. The material of the light-transmitting cover 11 includes, but is not limited to, glass. The display screen 12 can be a flexible display screen or a rigid display screen.

[0071] The back cover 20 can be used to protect the internal electronic components of the electronic device 100. The back cover 20 can be located on the side of the display screen 12 away from the light-transmitting cover 11.

[0072] The middle frame 30 may include a connected frame 31 and a middle plate 32. The frame 31 may be located between the rear cover 20 and the light-transmitting cover 11, and the frame 31 may be fixedly connected to the rear cover 20. For example, the frame 31 may be fixedly connected to the rear cover 20 by adhesive. The light-transmitting cover 11 may be fixedly fixed to the frame 31 by adhesive. The middle plate 32 is connected to the inner surface of the frame 31 to achieve the installation and fixation of the middle plate 32. For example, the middle plate 32 and the frame 31 may be made of metal, and the middle plate 32 may be fixed to the frame 31 by welding. The middle plate 32 may also be integrally formed with the frame 31. The middle plate 32 serves as the structural "skeleton" of the electronic device 100.

[0073] Button 50 is installed on the aforementioned frame 31. One button 50 can be provided, or multiple buttons 50 can be provided, each with a different function. For example, there can be two buttons 50: one button 50 can control the electronic device 100 to turn on / off, and the other button 50 can control the volume of the electronic device 100.

[0074] Button 50 can be made of either plastic or metal. Button 50 made of plastic has a distinct plastic texture and suffers from lower quality and refinement. Button 50 made of metal is more expensive, which is not conducive to cost savings.

[0075] To address the aforementioned issues, this application provides a plastic button 40.

[0076] Please see Figure 3 , Figure 3 This is an exploded structural diagram of a plastic button 40 and a frame 31 provided in an embodiment of this application. The frame 31 may have a mounting opening 311, and the plastic button 40 is disposed in the mounting opening 311. The inner wall of the mounting opening 311 can limit and fix the plastic button 40. For example, there may be multiple mounting openings 311 and multiple plastic buttons 40, with the number of plastic buttons 40 and mounting openings 311 being the same and corresponding one-to-one.

[0077] For ease of description, features representing space, such as mounting port 311, first region 411, second region 412, and third region 413, are labeled with arrowed leaders, while features representing physical structures, such as border 31 and button body 41, are labeled with unarrowed leaders.

[0078] Please refer to the following: Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the connection structure between a plastic button 40 and a frame 31 provided in an embodiment of this application. Figure 5 for Figure 4A cross-sectional schematic diagram. The plastic button 40 may include a button body 41, a metal film layer 42, and a matte paint layer 43. It is understood that, for ease of understanding and description, Figure 5 The thickness of the intermediate metal film layer 42 and the matte topcoat layer 43 is relatively large, and their actual shape and thickness are not affected by the actual dimensions of the metal film layer 42 and the matte topcoat layer 43. Figure 5 Restrictions.

[0079] The surface of the button body 41 has a first region 411 and a second region 412. The first region 411 surrounds the second region 412. The second region 412 faces outward from the frame 31, making it easy for users to quickly locate the plastic button 40.

[0080] For example, the second region 412 can be approximately rectangular, with the first region 411 surrounding the second region 412. To prevent the edges of the button body 41 from being too sharp and scratching the user, the edges of the button body 41 can be chamfered or rounded to form the aforementioned first region 411, making the edges of the button body 41 smoother and thus providing a better user experience.

[0081] It should be noted that at least the first region 411 has undergone polishing treatment. Polishing treatment refers to the use of mechanical, chemical, or electrochemical methods to reduce the surface roughness of a workpiece in order to obtain a bright and smooth surface. It can be understood that since the first region 411 has undergone polishing treatment, the gloss of the first region 411 is greater than that of the second region 412.

[0082] A metal film layer 42 covers the surface of the button body 41. By setting the metal film layer 42, the plastic button 40 has a metallic texture and a metallic luster, thereby improving the texture and refinement of the plastic button 40 without increasing the cost.

[0083] The matte finish layer 43 is located on the side of the metal film layer 42 away from the button body 41, and the matte finish layer 43 covers at least the second area 412.

[0084] The matte topcoat layer 43 serves two purposes. First, it provides wear-resistant protection, preventing the metal film layer 42 from wearing off and extending its service life. Second, it creates a matte finish.

[0085] The matte finish layer 43 covers at least the second area 412, meaning that the matte finish layer 43 gives the second area 412 a matte finish. The first area 411, after polishing, has a higher gloss level than the second area 412. Regardless of whether the matte finish layer 43 covers the first area 411, there is still a difference in gloss between the first area 411 and the second area 412. The first area 411 can exhibit a high-gloss effect relative to the second area 412, while the second area 412 can exhibit a matte effect relative to the first area 411. This allows the plastic button 40 to have a combination of gloss and matte finishes, further enhancing its texture and sophistication.

[0086] The plastic button 40 in this embodiment exhibits a metallic texture by incorporating a metal film layer 42. By polishing the first area 411 and ensuring a matte finish layer 43 covers at least the second area 412, the plastic button 40 achieves a combined glossy and matte effect, enhancing its texture and refinement. Furthermore, the plastic button 40 is made of plastic, which reduces costs compared to buttons made of metal.

[0087] In some embodiments, please continue reading Figure 5 Gloss is a physical quantity used to evaluate the ability of a material surface to reflect light. Gloss can be measured using a specular gloss meter, and the unit of gloss is GU (Gloss Unit). The gloss of the first region 411 is greater than or equal to 75 GU, which makes the gloss of the first region 411 relatively high. Even if a matte topcoat layer 43 is applied to the first region 411, the first region 411 can still exhibit a high-gloss effect compared to the second region 412.

[0088] For example, the gloss level of the first region 411 can be 75GU, 80GU, 85GU, 90GU, 95GU or 100GU.

[0089] In some embodiments, please continue reading Figure 5 The gloss level of the second region 412 is greater than or equal to 30 GU and less than or equal to 50 GU. If the gloss level of the second region 412 is less than 30 GU, it may reduce the metallic texture of the second region 412. If the gloss level of the second region 412 is greater than 50 GU and the gloss level of the first region 411 is greater than or equal to 75 GU, then the difference in gloss level between the second region 412 and the first region 411 is small, and the difference in gloss and matte finish between the second region 412 and the first region 411 is small.

[0090] Therefore, setting the gloss level of the second region 412 to be greater than or equal to 30 GU and less than or equal to 50 GU can make the second region 412 have a better metallic texture. Furthermore, the gloss level difference between the second region 412 and the first region 411 is moderate so that the second region 412 and the first region 411 can present a glossy and matte effect.

[0091] In some embodiments, please continue reading Figure 5 The difference between the gloss of the second region 412 and the gloss of the first region 411 can be greater than or equal to 20 GU, so that the difference between the gloss of the second region 412 and the gloss of the first region 411 is large, so that the difference between the gloss and matte of the second region 412 and the first region 411 is greater, thereby improving the texture and refinement of the plastic button 40.

[0092] For example, the difference between the gloss of the second region 412 and the gloss of the first region 411 can be 20GU, 25GU, 30GU, 35GU, 40GU, ​​45GU or 50GU.

[0093] like Figure 4 and Figure 5 As shown, the surface of the button body 41 may also have a third region 413, with the first region 411 located between the second region 412 and the third region 413. The edge of the first region 411 away from the second region 412 can be flush with the outer surface of the frame 31, so that the first region 411 and the second region 412 of the plastic button 40 protrude from the outside of the frame 31. The user can quickly find the position of the plastic button 40 by touching the outer surface of the frame 31, and it is also convenient for the user to press the plastic button 40 to control the electronic device. At this time, the user can only see the first region 411 and the second region 412, and cannot see the third region 413.

[0094] In some embodiments, please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of another connection structure between the plastic button 40 and the frame 31 provided in an embodiment of this application. Figure 7 for Figure 6 A cross-sectional schematic diagram. For ease of description, Figure 6 and Figure 7 The intermediate metal film layer 42 and the matte topcoat layer 43 are not shown. For example... Figure 6 and Figure 7 As shown, the surface of the second region 412 can be flush with the outer surface of the frame 31. In other words, the plastic button 40 is embedded in the frame 31, making the outer surface of the electronic device relatively flat. At this time, the user can only see the first region 411 and the second region 412, and cannot see the third region 413.

[0095] Please seeFigure 8 , Figure 8 This is a cross-sectional schematic diagram of a plastic button 40 provided in an embodiment of this application. The surface of the second region 412 is flush with the outer surface of the frame (e.g., Figure 7 ), and the edge of the first region 411 away from the second region 412 is flush with the outer surface of the border (e.g. Figure 5 In the case that the third region 413 is not exposed outside the frame, the metal film layer 42 can cover only the first region 411 and the second region 412.

[0096] In some embodiments, please refer to Figure 9 and Figure 10 , Figure 9 This is a schematic diagram illustrating another connection structure between the plastic button 40 and the frame 31 provided in an embodiment of this application. Figure 10 for Figure 9 A cross-sectional schematic diagram. For ease of description, Figure 8 and Figure 9 The intermediate metal film layer 42 and the matte topcoat layer 43 are not shown. For example... Figure 8 and Figure 9 As shown, the first region 411, the second region 412, and part of the third region 413 of the plastic button 40 all protrude outside the frame 31, making the plastic button 40 more prominent relative to the frame 31, and making it easier for users to quickly locate the plastic button 40 by touching the outer surface of the frame 31. At this time, the user can see the first region 411, the second region 412, and part of the third region 413.

[0097] Please see Figure 11 , Figure 11 This is a cross-sectional schematic diagram of another plastic button provided in an embodiment of this application. The first region 411, the second region 412, and part of the third region 413 all protrude beyond the frame (e.g., Figure 10 In this case, the third region 413 is exposed outside the frame, and the metal film layer 42 can cover the first region 411, the second region 412, and the third region 413. This gives the exposed parts of the plastic button 40 a metallic luster, improving the texture and refinement of the plastic button 40. For ease of description, the following explanation will use the example of the third region 413 being exposed outside the frame and the metal film layer 42 covering the first region 411, the second region 412, and the third region 413.

[0098] In some embodiments, please continue reading Figure 11 The matte topcoat layer 43 can cover the first region 411, the second region 412 and the third region 413. In other words, during the preparation of the matte topcoat layer 43, it is not necessary to mask the first region 411, which can improve production efficiency.

[0099] Understandably, since the first area 411 has been polished, its gloss level is higher than that of the second area 412. Therefore, after the matte paint layer 43 covers the first area 411, the second area 412, and the third area 413, there is still a difference in gloss between the first area 411 and the second area 412. The first area 411 exhibits a high-gloss effect, while the second area 412 and the third area 413 exhibit a matte effect. This allows the plastic button 40 to still present a glossy and matte finish, improving the texture and refinement of the plastic button 40.

[0100] In some embodiments, please refer to Figure 12 , Figure 12 This is a cross-sectional schematic diagram of another type of plastic button provided in an embodiment of this application. The matte paint layer 43 may only cover the second region 412, without covering the first region 411 and the third region 413, so that the difference between the gloss and matte finish between the first region 411 and the second region 412 is greater, the effect of gloss and matte finish is more obvious, and the texture and refinement of the plastic button 40 are further improved.

[0101] In some embodiments, please refer to Figure 13 , Figure 13 This is a cross-sectional view of another type of plastic button provided in an embodiment of this application. The matte paint layer 43 can also cover the second region 412 and the third region 413, but not the first region 411, making the matte effect of the second region 412 and the third region 413 stronger, the highlight effect of the first region 411 stronger, the difference between the gloss and matte finish of the first region 411 and the second region 412 greater, and the effect of the plastic button 40 having both gloss and matte finish is more obvious.

[0102] It is understandable that the matte topcoat layer 43 can be made to not cover the first region 411 by masking the first region 411 during the preparation of the matte topcoat layer 43.

[0103] In some embodiments, please refer to Figure 14 , Figure 14 This is a cross-sectional schematic diagram of a matte topcoat layer provided in an embodiment of this application. The material of the matte topcoat layer 43 includes matting powder 431 and resin 432. The resin 432 is used to bind the matting powder 431 and other materials together to form a uniform and dense coating.

[0104] On the one hand, matte powder 431 can make the matte coating layer 43 have a matte effect. On the other hand, matte powder 431 can also increase the viscosity of the matte coating layer 43 and reduce the fluidity of the matte coating layer 43, so that the matte coating layer 43 can be evenly distributed on the surface of the button body, which helps to improve the problem of edge accumulation of the matte coating layer 43.

[0105] In some embodiments, please continue readingFigure 14 In the matte topcoat layer 43, the content of matte powder 431 is greater than or equal to 20% and less than or equal to 30%. A content of matte powder 431 greater than or equal to 20% results in a relatively high content of matte powder 431, making the matte effect in the second area more pronounced. A content of matte powder 431 less than or equal to 30% prevents an excessively high content of matte powder 431 from causing the first area to also exhibit a matte effect.

[0106] Therefore, by controlling the content of matte powder 431 in the material of the matte topcoat layer 43 to be greater than or equal to 20% and less than or equal to 30%, the matte effect in the second area is more obvious, while the first area can still exhibit a high-gloss effect after the matte topcoat layer 43 is applied, thereby improving the gloss-matte cohesive effect of the plastic button 40. Furthermore, compared to a solution where the content of matte powder 431 is less than 20%, controlling the content of matte powder 431 in the material of the matte topcoat layer 43 to be greater than or equal to 20% and less than or equal to 30% ensures that the flowability of the matte topcoat layer 43 is moderate, allowing it to be evenly distributed on the surface of the button body. The first area, located outside the second area, has better paint adhesion, and the matte topcoat layer 43 on the first area has better wear resistance, preventing uneven distribution of the matte topcoat layer 43 from reducing the aesthetics of the plastic button.

[0107] The main material of matte powder 431 is silicon dioxide. The silicon content can be analyzed using an energy dispersive spectroscopy (EDS) instrument to detect the content of matte powder 431 in the matte topcoat layer 43. The EDS instrument is used to analyze the types and contents of elements in the material composition, in conjunction with scanning electron microscopy and transmission electron microscopy. Each element has its own characteristic X-ray wavelength, the magnitude of which depends on the characteristic energy ΔE released during energy level transitions. The EDS instrument utilizes this characteristic of different elements having different X-ray photon characteristic energies for compositional analysis.

[0108] For example, in the material of the matte topcoat layer 43, the content of matte powder 431 can be 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, or 30%.

[0109] In some embodiments, please continue reading Figure 14 The thickness of the matte topcoat layer 43 refers to its dimension along the X-axis. The thickness of the matte topcoat layer 43 is greater than or equal to 15μm and less than or equal to 30μm. This larger thickness of the matte topcoat layer 43 provides better matte finish for the second area and avoids excessive matte powder 431 that would result in a matte finish in the first area as well.

[0110] For example, the thickness of the matte topcoat layer 43 can be 15μm, 16μm, 17μm, 18μm, 19μm, 20μm, 21μm, 22μm, 23μm, 24μm, 25μm, 26μm, 27μm, 28μm, 29μm or 30μm.

[0111] Please continue reading. Figure 14 It is understandable that, in the material of the matte topcoat layer 43, with a certain amount of matte powder 431, the larger the thickness of the matte topcoat layer 43, the more matte powder 431 there is in any cross section, and the stronger the matte effect; the smaller the thickness of the matte topcoat layer 43, the less matte powder 431 there is in any cross section, and the weaker the matte effect.

[0112] In some embodiments, please continue reading Figure 14 In the material of the matte topcoat layer 43, the content of matte powder 431 can be greater than or equal to 20% and less than or equal to 25%. The thickness of the matte topcoat layer 43 can be greater than or equal to 20μm and less than or equal to 30μm.

[0113] In the material of the matte topcoat layer 43, the content of matte powder 431 is greater than or equal to 20% and less than or equal to 25%. Since the content of matte powder 431 is relatively low, the thickness of the matte topcoat layer 43 can be relatively large. The thickness of the matte topcoat layer 43 can be greater than or equal to 20μm and less than or equal to 30μm to improve the matte effect.

[0114] In some embodiments, please continue reading Figure 14 In the material of the matte topcoat layer 43, the content of matte powder 431 can be greater than or equal to 25% and less than or equal to 30%. The thickness of the matte topcoat layer 43 is greater than or equal to 15μm and less than or equal to 20μm.

[0115] In the material of the matte topcoat layer 43, the content of matte powder 431 is greater than or equal to 25% and less than or equal to 30%. If the content of matte powder 431 is relatively high, the thickness of the matte topcoat layer 43 can be relatively small. The thickness of the matte topcoat layer 43 can be greater than or equal to 15μm and less than or equal to 20μm, so as to avoid excessive matte powder causing the first area to also have a matte effect.

[0116] In some embodiments, please refer to Figure 15 , Figure 15This is a schematic diagram of the structure of a plastic button 40 provided in an embodiment of this application. The second region 412 may be provided with a textured pattern 45. The textured pattern 45 can have a matte effect, making the matte effect of the second region 412 stronger, thus increasing the difference between the gloss and matte finish between the first region 411 and the second region 412, and making the combined gloss and matte effect more obvious. Furthermore, providing the textured pattern 45 in the second region 412 also makes the plastic button 40 look more textured and refined.

[0117] In some embodiments, please continue reading Figure 15 The texture pattern 45 includes CD pattern, which is a texture similar to a CD disc. CD pattern can make the plastic button 40 look more high-end and textured.

[0118] It is understandable that the depth dimension of texture pattern 45 is the dimension of texture pattern 45 along the X-axis direction.

[0119] For example, when the texture pattern 45 includes a CD pattern, the depth dimension of the texture pattern 45 can be greater than or equal to 30 μm and less than or equal to 100 μm, so that the texture pattern 45 can be relatively obvious.

[0120] When the texture pattern 45 includes a CD pattern, the depth dimension of the texture pattern 45 can be 30μm, 40μm, 45μm, 50μm, 60μm, 70μm, 80μm, 90μm or 100μm.

[0121] In some embodiments, please refer to Figure 16 , Figure 16 This is a schematic diagram of another plastic button 40 provided in an embodiment of this application. The texture pattern 45 may include a spark pattern, which is typically composed of a series of curves and can produce a gorgeous texture effect, thereby enhancing the texture of the plastic button 40.

[0122] For example, in the case where the texture pattern 45 includes a spark pattern, the depth dimension of the texture pattern 45 is greater than or equal to 15 μm and less than or equal to 80 μm, so that the texture pattern 45 can be relatively obvious.

[0123] When the texture pattern 45 includes a spark pattern, the depth dimension of the texture pattern 45 can be 15μm, 20μm, 30μm, 40μm, 45μm, 50μm, 60μm, 70μm or 80μm.

[0124] In some embodiments, please refer to Figure 17 , Figure 17This is a schematic diagram of another plastic button 40 provided in an embodiment of this application. The texture pattern 45 may include a brushed texture, which is typically composed of a series of straight lines. The brushed texture can make the plastic button 40 look more metallic.

[0125] For example, when the texture pattern 45 includes a brushed texture, the depth dimension of the texture pattern 45 may be greater than or equal to 15 μm and less than or equal to 100 μm.

[0126] When the texture pattern 45 includes a brushed texture, the depth dimension of the texture pattern 45 can be 15μm, 20μm, 30μm, 40μm, 45μm, 50μm, 60μm, 70μm, 80μm, 90μm or 100μm.

[0127] In some embodiments, please refer to Figure 18 , Figure 18 This is a cross-sectional view of another plastic button 40 provided in an embodiment of this application. The plastic button 40 may further include a surface treatment layer 44, which is disposed between the surface of the metal film layer 42 and the surface of the button body 41. The surface treatment layer 44 is used to fill and cover defects on the surface of the button body 41, forming a relatively flat and smooth plane, which facilitates the subsequent preparation of the metal film layer 42 and makes the metal film layer 42 perform better.

[0128] For example, the surface treatment layer 44 may include a UV primer, which is an ultraviolet curing material. After the UV primer is sprayed onto the surface of the button body 41, it is irradiated by a UV lamp, causing the UV primer to change from a liquid state to a solid state, making the surface of the button body 41 smooth.

[0129] It is understandable that the thickness of the surface treatment layer 44 is the dimension of the surface treatment layer 44 along the X-axis direction.

[0130] In some embodiments, please continue reading Figure 18 The thickness of the surface treatment layer 44 is greater than or equal to 3μm, which makes the thickness of the surface treatment layer 44 relatively large, so that the surface treatment layer 44 can fill and cover the defects on the surface of the button body 41, and avoid the defects on the surface of the button body 41 still being visible after the surface treatment layer 44 is applied.

[0131] It is understandable that the thickness of the surface treatment layer 44 may be inconsistent at different locations. The thickness of the surface treatment layer 44 being greater than or equal to 3μm means that the minimum thickness of the surface treatment layer 44 is greater than or equal to 3μm.

[0132] For example, the thickness of the surface treatment layer 44 can be 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, 11μm, 12μm, 13μm, 14μm, 15μm or 20μm.

[0133] In some embodiments, please refer to Figure 19 and Figure 20 , Figure 19 This is a cross-sectional schematic diagram of another type of plastic button 40 provided in an embodiment of this application. Figure 20 for Figure 19 Enlarged diagram of point A in the middle.

[0134] The second region 412 is provided with a texture pattern 45, and the thickness of the surface treatment layer 44 is smaller than the texture depth of the texture pattern 45.

[0135] like Figure 20 As shown, the texture depth of the texture pattern is H1, and the thickness of the surface treatment layer 44 is H2, where H2 < H1. This is to prevent the surface treatment layer from being too thick and filling the texture pattern 45, which would otherwise obscure the texture effect.

[0136] It is understandable that the thickness of the surface treatment layer 44 may be inconsistent at different locations. H2 < H1 means that the maximum thickness of the surface treatment layer 44 is less than the texture depth of the texture pattern 45.

[0137] In some embodiments, please continue reading Figure 20 H2≤2 / 3H1, which makes the thickness of the surface treatment layer 44 more reasonable. A metal film layer 42 and a matte topcoat layer 43 are also set on the surface treatment layer 44. H2≤2 / 3H1 is set to leave a certain space margin to prevent the metal film layer 42 and the matte topcoat layer 43 from filling the texture pattern 45.

[0138] For example, H2 can be equal to 1 / 6H1, 1 / 5H1, 1 / 4H1, 1 / 3H1, 2 / 5H1, 1 / 2H1, or 2 / 3H1.

[0139] For example, if the texture pattern 45 includes a CD pattern and the depth dimension H1 of the texture pattern 45 is 30 μm, then the thickness dimension H2 of the surface treatment layer 44 is ≤ 20 μm.

[0140] In some embodiments, please refer to Figure 21 , Figure 21This is a cross-sectional schematic diagram of another plastic button 40 provided in an embodiment of this application. The plastic button 40 further includes an adhesion promoting layer 46, which is disposed between the surface treatment layer 44 and the surface of the button body 41. The adhesion promoting layer 46 is used to improve the adhesion between the surface treatment layer 44 and the button body 41, thereby improving the bonding force between the surface treatment layer 44 and the button body 41, making the connection between the surface treatment layer 44 and the button body 41 more stable and reliable.

[0141] For example, the material of the adhesion promoting layer 46 may be an adhesion promoter, such as a one-component acrylic copolymer.

[0142] In some embodiments, please refer to Figure 22 , Figure 22 This is a cross-sectional view of another plastic button 40 provided in an embodiment of this application. The plastic button 40 further includes a paint layer 47, which is disposed between the metal film layer 42 and the matte topcoat layer 43. By providing the paint layer 47, the plastic button 40 can present different color effects, making the appearance of the plastic button 40 more beautiful and improving its texture and refinement.

[0143] For example, the paint layer 47 can be gold, silver, or other colors. This application embodiment does not limit the specific color of the paint layer 47.

[0144] In some embodiments, please refer to Figure 23 and Figure 24 , Figure 23 The flowchart illustrates a method for manufacturing a plastic button 40 according to an embodiment of this application. Figure 24 This is a schematic diagram illustrating the steps of a method for manufacturing a plastic button 40 according to an embodiment of this application.

[0145] The manufacturing methods for plastic buttons include:

[0146] Step S10: Provide a button body 41. The surface of the button body 41 has a first region 411 and a second region 412. The first region 411 is arranged around the second region 412. At least the first region 411 is polished.

[0147] The button body 41 can be formed by injection molding, which has the advantages of fast production speed, high efficiency and high precision.

[0148] At least the first region 411 needs to be polished. Polishing refers to a processing method that uses mechanical, chemical, or electrochemical methods to reduce the surface roughness of a workpiece to obtain a bright and smooth surface. The portion of the injection mold corresponding to the first region can be polished using a grinding wheel, thus polishing the first region 411 in the button body 41 formed after injection molding. It is understood that after polishing, the gloss level of the first region 411 is greater than that of the second region 412.

[0149] Step S20: A metal film layer 42 is applied to the surface of the button body 41.

[0150] By setting a metal film layer 42, the plastic buttons acquire a metallic texture and luster, thereby enhancing their overall quality and refinement. The metal film layer 42 can be formed through non-conductive electroplating (NCVM). NCVM refers to the organic transformation of metal materials under vacuum conditions using specific chemical and physical methods, converting the metal into particles that are deposited or adsorbed onto the surface of the plastic material to form a film, commonly known as a coating. NCVM involves depositing thin films of metal and insulating compounds to achieve a final metallic appearance. The metal film layer 42 formed through NCVM has excellent advantages such as uniform coating thickness and high density.

[0151] The metal film layer 42 includes two types. One is a structural color metal film layer, with metal materials including zirconium oxide, silicon oxide, niobium pentoxide, etc., achieving the desired color through light refraction. The other is a silver metal film layer, with metal materials including indium and tin, achieving the silver color of the metal film layer 42 through the silver color of indium and tin themselves.

[0152] Step S30: A matte finish layer 43 is applied to the side of the metal film layer 42 away from the button body 41, and the matte finish layer 43 covers at least the second area 412.

[0153] The matte finish layer 43 serves two purposes. First, it provides wear-resistant protection, preventing the metal film layer 42 from wearing off and extending its lifespan. Second, it creates a matte finish. The matte finish layer 43 covers at least the second area 412, giving it a matte appearance. Because the first area 411 is polished, its gloss level is higher than that of the second area 412. Therefore, regardless of whether the matte finish layer 43 covers both areas, or only the second area 412, there is still a difference in gloss between them. The first area 411 has a high-gloss finish relative to the second area 412, while the second area 412 has a matte finish relative to the first area 411. This allows the plastic button to achieve a balanced gloss and matte finish, enhancing its texture and sophistication.

[0154] In some embodiments, please continue reading Figure 24 Before step S20, the manufacturing method also includes:

[0155] Set a texture pattern on the second region 412.

[0156] The second area 412 can be decorated with a textured pattern 45, which can have a matte effect, making the matte finish of the second area 412 stronger. This increases the difference between the gloss and matte finish of the first area 411 and the second area 412, making the overall gloss and matte effect more pronounced. Furthermore, adding a textured pattern to the second area 412 also makes the plastic button look more textured and refined.

[0157] In most related technologies, a coating such as paint or topcoat is applied to the plastic side key, and then a texture pattern is formed on the coating by laser engraving. Because the plastic side key has a small surface area, laser engraving is not easy to position, the precision of laser engraving is poor, the texture effect of laser engraving is monotonous, and laser engraving will reduce the thickness of the coating and reduce the wear resistance of the coating.

[0158] It is understood that the coating in the embodiments of this application includes a metal film layer 42, a matte topcoat layer 43, a surface treatment layer, an adhesion promoting layer, and a color paint layer.

[0159] In this embodiment, a textured pattern can be formed in the second region 412 by setting a textured pattern on the injection mold. The injection mold can be an electroforming mold. The processing technology of the electroforming mold is to make a master mold according to the required shape. That is, the master mold is made according to the required shape of the button body 41. Then, the master mold is used as the cathode and the electroforming material is used as the anode. The master mold and the electroforming material are placed together in a metal salt solution of the same type as the anode material and a direct current is applied. Under the action of electrolysis, a metal electroforming layer is gradually deposited on the surface of the master mold. When the metal electroforming layer reaches the required thickness, the master mold and the electroforming material are taken out of the solution, and the electroforming material is separated from the master mold to obtain an electroformed part. The shape of the electroformed part corresponds to that of the master mold.

[0160] Electroforming materials are typically copper, nickel, and iron, and sometimes gold, silver, platinum-nickel-cobalt, and cobalt-tungsten alloys are used, but nickel electroforming is the most widely used. The thickness of the electroformed layer is generally 0.02 mm to 6 mm, but can sometimes reach 25 mm. The dimensional error between the electroformed part and the original mold is only a few micrometers. Therefore, electroforming molds can accurately replicate intricate and complex workpieces with high precision.

[0161] The textured patterns on the steel mold are formed by computerized digital control (CNC), electrical discharge machining, or wire cutting, with a machining accuracy of ±0.05mm to ±0.004mm, which is relatively low.

[0162] Therefore, the injection molds formed using electroforming molds have high precision, resulting in high precision in the injection-molded button body. Electroforming molds can create a wide variety of textures, achieving textural diversity. Furthermore, forming textures on the button body through injection molding, compared to forming textures on a coating through laser engraving, does not change the coating thickness and improves the coating's wear resistance.

[0163] In some embodiments, please refer to Figure 25 , Figure 25 A schematic diagram illustrating the steps of another method for manufacturing a plastic button according to an embodiment of this application. Before S20, the manufacturing method further includes:

[0164] Step S11: Apply a surface treatment layer 44 to the surface of the button body 41.

[0165] The surface treatment layer 44 can be formed by spraying. The surface treatment layer 44 is used to fill and cover defects on the surface of the button body 41, forming a relatively flat and smooth plane, which facilitates the subsequent preparation of the metal film layer 42 and makes the metal film layer 42 perform better.

[0166] In some embodiments, please refer to Figure 26 , Figure 26This is a schematic diagram illustrating the steps of another method for manufacturing a plastic button according to an embodiment of this application. Before step S11, the manufacturing method further includes:

[0167] Step S12: Apply an adhesion promoting layer 46 to the surface of the button body 41.

[0168] The adhesion promoting layer 46 can be formed by spraying. The adhesion promoting layer 46 is used to improve the adhesion between the surface treatment layer 44 and the button body 41, thereby improving the bonding force between the surface treatment layer 44 and the button body 41, making the connection between the surface treatment layer 44 and the button body 41 more stable and reliable.

[0169] In some embodiments, please refer to Figure 27 , Figure 27 This is a schematic diagram illustrating the steps of another method for manufacturing a plastic button according to an embodiment of this application. After step S20, the manufacturing method further includes:

[0170] Step S21: Apply a paint layer 47 to the side of the metal film layer 42 that is away from the button body 41.

[0171] The paint layer 47 can be formed by spraying. By setting the paint layer 47, the plastic buttons can present different color effects, making the plastic buttons more aesthetically pleasing and improving their texture and refinement.

[0172] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0173] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A plastic button, characterized in that, include: A button body, the surface of which has a first region and a second region, the first region surrounding the second region, and at least the first region being polished. A metal film layer covers the surface of the button body; A matte finish layer is located on the side of the metal film layer opposite to the button body, and the matte finish layer at least covers the second area.

2. The plastic button according to claim 1, characterized in that, The matte topcoat layer covers the first area and the second area.

3. The plastic button according to claim 1 or 2, characterized in that, The second area is provided with a textured pattern.

4. The plastic button according to claim 3, characterized in that, The texture pattern includes at least one of CD pattern, spark pattern, or brushed pattern.

5. The plastic button according to any one of claims 1 to 4, characterized in that, The plastic button also includes a surface treatment layer, which is disposed between the surface of the metal film layer and the surface of the button body.

6. The plastic button according to claim 5, characterized in that, The thickness of the surface treatment layer is greater than or equal to 3 μm.

7. The plastic button according to claim 5 or 6, characterized in that, The second region is provided with a textured pattern, and the thickness of the surface treatment layer is smaller than the texture depth of the textured pattern.

8. The plastic button according to claim 7, characterized in that, The texture depth of the texture pattern is H1; the thickness of the surface treatment layer is H2, where H2 ≤ 2 / 3H1.

9. The plastic button according to claim 5, characterized in that, The plastic button also includes an adhesion promoting layer, which is disposed between the surface treatment layer and the surface of the button body.

10. The plastic button according to any one of claims 1 to 9, characterized in that, The plastic button also includes a paint layer, which is disposed between the metal film layer and the matte topcoat layer.

11. The plastic button according to any one of claims 1 to 10, characterized in that, The material of the matte topcoat layer includes matte powder and resin.

12. The plastic button according to claim 11, characterized in that, In the material of the matte topcoat layer, the content of the matting powder is greater than or equal to 20% and less than or equal to 30%.

13. The plastic button according to claim 11 or 12, characterized in that, The thickness of the matte topcoat layer is greater than or equal to 15 μm and less than or equal to 30 μm.

14. The plastic button according to claim 13, characterized in that, In the material of the matte topcoat layer, the content of the matte powder is greater than or equal to 20% and less than or equal to 25%; the thickness of the matte topcoat layer is greater than or equal to 20μm and less than or equal to 30μm.

15. The plastic button according to claim 13, characterized in that, In the material of the matte topcoat layer, the content of the matte powder is greater than or equal to 25% and less than or equal to 30%; the thickness of the matte topcoat layer is greater than or equal to 15μm and less than or equal to 20μm.

16. The plastic button according to any one of claims 1 to 15, characterized in that, The gloss level of the first region is greater than or equal to 75 GU.

17. The plastic button according to any one of claims 1 to 16, characterized in that, The gloss level of the second region is greater than or equal to 30 GU and less than or equal to 50 GU.

18. An electronic device, characterized in that, The electronic device includes: A frame, the frame having a mounting port; The plastic button is the plastic button according to any one of claims 1 to 17, wherein the plastic button is disposed at the mounting port, and the second region faces outward from the frame.

19. A method for manufacturing a plastic button, characterized in that, include: A button body is provided, the surface of the button body having a first region and a second region, the first region surrounding the second region, and at least the first region being polished. A metal film layer is formed on the surface of the button body; A matte finish layer is provided on the side of the metal film layer away from the button body, and the matte finish layer at least covers the second area.

20. The method for manufacturing a plastic button according to claim 19, characterized in that, Before the metal film layer is applied to the surface of the button body, the manufacturing method further includes: A texture pattern is set on the second region.

21. The method for manufacturing a plastic button according to claim 19, characterized in that, Before the metal film layer is applied to the surface of the button body, the manufacturing method further includes: A surface treatment layer is provided on the surface of the button body.

22. The method for manufacturing a plastic button according to claim 20, characterized in that, Before applying a surface treatment layer to the surface of the button body, the manufacturing method further includes: An adhesion-promoting layer is provided on the surface of the button body.

23. The method for manufacturing a plastic button according to any one of claims 19 to 22, characterized in that, After the metal film layer is applied to the surface of the button body, the manufacturing method further includes: A paint layer is provided on the side of the metal film layer that is opposite to the button body.

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