Processing method of decorative layer of electronic equipment and electronic equipment
By using flexible printing molds and curing technology to form multi-layered textures on decorative panels, the problem of traditional photolithography processes being unable to create three-dimensional textures has been solved, achieving efficient and low-cost three-dimensional texture processing and improving design flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-29
- Publication Date
- 2026-03-13
AI Technical Summary
Traditional photolithography processes struggle to efficiently create three-dimensional textures on the surfaces of electronic products, especially on large or complex curved surfaces. Furthermore, the lack of design flexibility leads to high costs and low efficiency.
A flexible printing mold is used to set a printing layer on the outside of the inner functional film layer. By applying external force, the mold is fitted onto the outside of the decorative panel and the external force is removed to make it fit, thus achieving printing. Combined with UV curing or high-temperature baking curing technology, a multi-layer texture effect is formed.
The ability to efficiently and cost-effectively create simulated anodized metal textures with a three-dimensional visual effect on decorative panels of different shapes and materials improves design freedom and economic efficiency.
Smart Images
Figure CN121665488A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of electronic device processing technology, and in particular to a method for processing a decorative layer of an electronic device and an electronic device thereof. Background Technology
[0002] Traditionally, photolithography is the primary process for creating micro-textures. While photolithography offers extremely high precision (e.g., linewidths up to 2nm) and can be used for two-dimensional planar electronic product exteriors (such as mobile phone back covers), traditional photolithography still suffers from the following problems: 1. It's difficult to achieve three-dimensional textures in areas like barbs on electronic product exteriors. Because traditional photolithography is a subtractive process, it excels at creating fine lines and patterns on planar surfaces (two-dimensional or slightly curved three-dimensional), but it struggles to directly and efficiently create textures with varying heights and depths, mimicking anodized brushed or frosted finishes. 2. The application cost for large-size / complex curved surfaces is prohibitively high. Due to the inherent nature of photolithography, the manufacturing cost of the light source and mask increases dramatically when processing large-area, complex curved surfaces, severely impacting economic efficiency. 3. It lacks design flexibility and efficiency. In the rapidly evolving market environment of consumer electronics, any need to fine-tune or change the design of the metallic texture requires the remaking of expensive photomasks. This high remaking cost and long development cycle mean that photolithography technology lacks the necessary design flexibility in the pursuit of diversified and efficient decorative applications.
[0003] Therefore, there is an urgent need for a processing method for decorative layers in electronic devices and an electronic device in general to solve the above problems. Summary of the Invention
[0004] Based on the above, the purpose of this invention is to provide a method for processing decorative layers of electronic devices and an electronic device that can adapt to the processing of textures of decorative panels of various shapes, with low cost, high design freedom, and better processing effect.
[0005] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions: Methods for processing decorative layers in electronic devices include: An inner functional membrane layer is installed on the outer side of the decorative panel; An imprinting layer is provided on the outer side of the inner functional membrane layer. The imprinting layer is provided by: applying an external force to stretch the flexible imprinting mold outward in a circumferential direction and fitting it onto the outer side of the decorative panel; removing the external force to allow the flexible imprinting mold to adhere to the outer side of the imprinting layer and completing the imprinting process.
[0006] As an alternative processing method for decorative layers of electronic devices, the imprinting includes: imprinting on an uncured imprinting layer, or semi-curing the imprinting layer and imprinting on the semi-cured imprinting layer; the imprinting process includes: curing the imprinting layer.
[0007] As an alternative processing method for the decorative layer of electronic devices, the process includes removing the flexible printing mold before curing the printing layer; or removing the flexible printing mold after curing the printing layer.
[0008] As an optional processing method for the decorative layer of electronic devices, after the imprinting is completed, the method further includes: sequentially setting an inner texture covering layer and an outer functional film layer on the outside of the imprinted layer; and setting another imprinted layer on the outside of the outer functional film layer.
[0009] As one option for processing a decorative layer for electronic devices, the inner texture covering layer is a coating layer; The external functional film layer includes a UV layer; and / or a PU layer; and / or a metallic film layer; and / or a logo layer.
[0010] As an alternative processing method for decorative layers of electronic devices, the flexible printing mold includes an mounting opening and a printing cavity, wherein the inner diameter of the mounting opening is smaller than the inner diameter of the printing cavity.
[0011] As an alternative processing method for decorative layers of electronic devices, the flexible printing mold is integrally formed.
[0012] As an alternative processing method for decorative layers of electronic devices, the integrally formed flexible printing mold includes a first upper mold and a first lower mold. The outer side of the first lower mold is provided with a texture, which is made by photolithography, laser engraving or a five-axis CNC machining center. The first upper mold and the first lower mold are joined together and filled with silicone to form the flexible printing mold.
[0013] As an alternative processing method for decorative layers of electronic devices, the flexible printing mold includes a primary silicone layer, with the printing cavity formed on the inner side of the primary silicone layer; or the flexible printing mold further includes a secondary silicone layer, which is disposed on the outer side of the primary silicone layer.
[0014] An electronic device is provided with a decorative panel, wherein the decorative panel is provided with a decorative layer formed by the processing method of the electronic device decorative layer as described in any of the above schemes.
[0015] The beneficial effects of the embodiments of the present invention are as follows: The processing method for the decorative layer of electronic devices according to embodiments of the present invention involves setting a printing layer on the outer side of an inner functional film layer, which can display a preset texture. Texture formation through printing is not limited by the material of the decorative panel, making it more economical and efficient; it can also adapt to the processing of textures on complex-shaped products, especially for imitation anodized metal appearance with a three-dimensional texture effect. The inner functional film layer is used to enable the decorative layer of electronic devices to have different display effects. Specifically, when setting the printing layer, an external force is applied to stretch the flexible printing mold outwards and fit it onto the outer side of the decorative panel. Especially when the flexible printing mold has barbs, it can better fit onto the outer side of the decorative panel to adapt to the printing of substrates with different shapes; furthermore, after the external force is removed, the flexible printing mold can adhere to the outer side of the printing layer, effectively ensuring the printing effect. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of a flexible printing mold being stretched and fitted onto the outside of a decorative panel in the processing method for the decorative layer of an electronic device provided in a specific embodiment of the present invention. Figure 2 This is a schematic diagram of the printing process after the external force is removed in the processing method of the decorative layer of electronic device provided in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of a mold for processing flexible printing molds according to a specific embodiment of the present invention; Figure 4 This is a schematic diagram of another process for processing a flexible printing mold provided in a specific embodiment of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of another process for processing a flexible printing mold provided in a specific embodiment of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of another flexible printing mold provided in a specific embodiment of the present invention.
[0018] In the picture: 10. Decorative panel; 20. Lower jig; 100. Flexible printing mold; 110. Mounting port; 120. Printing cavity; 130. Texture; 210. First upper mold; 220. First lower mold; 310. First silicone layer; 320. Second silicone layer; 330. Second upper mold; 340. Second lower mold. Detailed Implementation
[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.
[0021] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.
[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0024] like Figure 1 and Figure 2As shown, this embodiment provides a method for processing a decorative layer for an electronic device. The method includes: setting an inner functional film layer on the outer side of a decorative panel 10; setting a printing layer on the outer side of the inner functional film layer. Setting the printing layer includes: applying an external force to stretch a flexible printing mold 100 outward in a circumferential direction and fitting it onto the outer side of the decorative panel 10; removing the external force to allow the flexible printing mold 100 to adhere to the outer side of the printing layer and completing the printing process.
[0025] By imprinting a printing layer onto the outer side of the inner functional film layer, the printing layer can display a preset texture 130. Forming the texture 130 through printing is not limited by the material of the decorative panel 10, making it more economical and efficient; it can also adapt to the processing of textures 130 on products with complex shapes, especially textures 130 with a three-dimensional texture effect resembling anodized metal. The inner functional film layer is used to give the decorative layer of electronic devices different display effects. Specifically, when setting the printing layer, an external force is applied to stretch the flexible printing mold 100 circumferentially outward and fit it onto the outer side of the decorative panel 10. Especially when the flexible printing mold 100 has barbs, it can better fit onto the outer side of the decorative panel 10 to adapt to the printing of substrates with different shapes; in addition, after the external force is removed, the flexible printing mold 100 can adhere to the outer side of the printing layer, effectively ensuring the printing effect.
[0026] In summary, the aforementioned processing method for decorative layers in electronic devices effectively solves the problem of achieving a realistic visual texture and delicate tactile feel comparable to metal anodizing on non-metallic substrates (such as plastics, glass fibers, carbon fiber composites, etc.) or metal-plastic composites. It overcomes the limitations of traditional photolithography and other processes, creating micro-textures with a distinct three-dimensional effect and complex variations on the surface of products with barbs in a more efficient, lower-cost, and more design-free manner. This provides a new path for the industrial design (ID) of consumer electronics products, enabling them to present a unified high-end metallic texture on different material substrates while meeting the requirements of 3D appearance ID decoration.
[0027] This embodiment also discloses an electronic device, which is provided with a decorative panel 10. The decorative panel 10 is provided with a decorative layer formed by the processing method of the electronic device decorative layer described in any of the above embodiments. Exemplarily, the decorative layer can be a multi-substrate material such as metal, plastic, glass fiber, carbon fiber, etc. Exemplarily, the electronic device can be a consumer electronic product such as a mobile phone, tablet computer, or smart wearable device, and the decorative panel 10 can be the mid-frame of a mobile phone or tablet computer or the shell of a unibody product, etc. The decorative layer formed by the processing method of the electronic device decorative layer of the decorative panel 10 has a cost-effective, highly flexible design and widely applicable material imitation metal anodized texture appearance, especially achieving a metal anodizing effect on non-metallic substrates (such as plastics and composite materials), while giving it a complex three-dimensional texture 130.
[0028] Specifically, the printing process for the decorative layer of an electronic device includes: printing on an uncured printing layer, or semi-curing the printing layer and printing on the semi-cured printing layer; after printing, the process includes: curing the printing layer. For example, the inner functional film layer includes a PU layer formed by spraying. After completing the spraying of all inner functional film layers, a transparent PU (polyurethane) coating, a UV (ultraviolet light curing) coating, or a composite coating of both is sprayed onto the outermost layer of the inner functional film layer. Subsequently, printing can be performed directly after the coating is completed. Alternatively, the coating can be semi-cured, i.e., not fully cured, but semi-cured (e.g., by pre-drying or LED or low-energy UV pre-irradiation), which brings the coating to a plastic gel state. Printing is then performed using a flexible printing mold 100, followed by final curing to form the printing layer. The printing layer is transparent / colored, with a film thickness set to 20μm-25μm to achieve different textures 130.
[0029] Furthermore, before curing the imprint layer, the process includes removing the flexible imprint mold 100; or after curing the imprint layer, the process includes removing the flexible imprint mold 100. That is, after imprinting is completed, one of two methods can be selected for final curing based on actual needs and process characteristics, thereby forming an imprint layer with texture 130 that is permanently fixed. Method one is: while the flexible imprint mold 100 and the imprint layer are pressed together, UV full curing or high-temperature baking full curing is performed. Method two is: first, the flexible imprint mold 100 is separated from the decorative panel 10, and then the formed imprint layer is subjected to UV full curing or high-temperature baking full curing.
[0030] It is worth noting that the curing method, whether UV curing or high-temperature baking curing, depends on the type of the imprint layer. When the imprint layer uses a UV coating, UV curing is required; when the imprint layer uses a PU coating, high-temperature baking curing is required; when the imprint layer uses a composite coating of UV and PU coatings, either UV curing or high-temperature baking curing can be chosen. Furthermore, when using UV curing, if the transparency of the UV coating is greater than 70%, full curing can be performed while keeping the flexible imprint mold 100 pressed. If the transparency of the UV coating is less than 70%, it will affect the UV curing effect; therefore, the flexible imprint mold 100 needs to be separated from the decorative panel 10 before curing. It is understood that high-temperature baking curing is unrelated to the transparency of the coating; those skilled in the art can choose whether to perform full curing while keeping the flexible imprint mold 100 pressed, based on actual needs. Additionally, after imprinting onto the uncured imprint layer, preliminary curing is required to ensure that the texture 130 has been stably imprinted after the flexible imprint mold 100 is separated from the decorative panel 10.
[0031] In this embodiment, the PU layer consists of two layers. One PU layer is transparent / colored with a film thickness of 10μm-15μm, used for adhesion and coverage of the decorative panel 10. The other PU layer has a preset color and a film thickness of 15μm-20μm, used to buffer coating shrinkage and provide the main color. A base layer is also provided on the side of the PU layer closest to the decorative panel 10, formed by spraying a primer.
[0032] In summary, the process flow for setting a single-layer texture 130 imprint layer is as follows: substrate (decorative panel 10) cleaning and sanding > spraying primer > spraying color paint (PU layer) > spraying UV coating (imprint layer, imprinting, curing), used to complete a decorative panel with one PU layer; or substrate (decorative panel 10) cleaning and sanding > spraying primer > spraying color paint (PU layer) > spraying pearlescent layer (PU layer) > spraying UV coating (imprint layer, imprinting, curing), used to complete a decorative panel 10 with two PU layers.
[0033] In other embodiments, after the printing is completed, the process further includes: sequentially setting an inner texture covering layer and an outer functional film layer on the outside of the printing layer; and setting another printing layer on the outside of the outer functional film layer. That is, the decorative panel 10 has two printing layers to display the inner texture and the outer texture respectively.
[0034] For example, the inner texture cover layer is a coating layer with a relatively thin thickness. The coating process effectively reduces the impact on the inner texture, thus setting the inner texture cover layer as a coating layer effectively protects the inner texture presented by the inner imprint layer. The inner texture cover layer can be an optical coating layer with a thickness of 100nm-300nm, forming a functional stack through optical coating processes to enhance gloss, achieve special optical effects, and provide a high-quality feel. Alternatively, the inner texture cover layer can be a metallic coating layer with a thickness of 20nm, forming a metallic coating layer through physical vapor deposition (PVD) to provide a high-metallic texture.
[0035] The external functional film layer includes a UV layer; and / or a PU layer; and / or a metallic film layer; and / or a logo layer. The logo layer can be formed through hot stamping and / or screen printing processes, allowing for more flexible layer settings in the processing methods of the aforementioned decorative layers for electronic devices. The UV and PU layers can be configured similarly to the internal functional film layer, used to display color decoration, pearlescent effects, etc. The metallic film layer can be coated using physical vapor deposition (PVD) processes, such as NCVM (non-conductive vacuum coating) technology, to achieve a stronger metallic texture. Furthermore, the order of spraying or deposition of each layer in the external functional film layer can be flexibly adjusted according to the final ID effect requirements. In addition, the internal or external functional film layer can be a combination of PU, and / or VU, and / or metallic film layer, and / or logo layer. The process sequence and the thickness of each layer can be adjusted according to customer ID requirements or coating characteristics, and the process is not limited to the above-mentioned order.
[0036] Optionally, the outer functional film layer includes a PU layer with a pearlescent finish and a thickness of 4μm-8μm to display a high metallic texture. The outer functional film layer also includes a logo layer with PU layers on both the top and bottom to improve adhesion, buffer coating shrinkage, display color, and provide interlayer adhesion for the logo. It is worth noting that the logo layer is not limited by material or process, as long as the logo can be displayed. For example, the logo layer can use processes such as hot stamping / silk screen printing.
[0037] In summary, the process flow for the double-textured 130 imprint layer is as follows: substrate (decorative panel 10) cleaning and sanding > spraying primer (bottom layer) > spraying colored paint (PU layer) > spraying inner texture UV coating (imprint layer, imprinting, curing) > coating layer > spraying PU layer > spraying outer texture UV coating (imprint layer, imprinting, curing). The process flow for the optical coating process is as follows: substrate (decorative panel 10) cleaning and sanding > spraying primer (bottom layer) > spraying colored paint (PU layer) > spraying inner texture UV coating (imprint layer, imprinting, curing) > coating layer > spraying primer (bottom layer) > spraying PU layer > spraying outer texture UV coating (imprint layer, imprinting, curing).
[0038] It is worth noting that the flexible printing mold 100 includes an mounting opening 110 and a printing cavity 120, with the inner diameter of the mounting opening 110 being smaller than the inner diameter of the printing cavity 120. This is to accommodate the decorative plate 10 with barbs; that is, after applying external force to stretch the flexible printing mold 100 circumferentially outward, the inner diameter of the mounting opening 110 also increases, allowing the decorative plate 10 to enter the printing cavity 120. After the external force is removed, the flexible printing mold 100 can better conform to the outer side of the printing layer to achieve printing. Optionally, a mechanism, air-assisted method, or vacuum method can be used to pull the flexible printing mold 100 outward to avoid the barb structure and reduce scratches on the coating. After the external force is removed, printing can be achieved by the force of the flexible printing mold 100 recovering its deformation, or by applying further external force. This external force can be achieved through air pressure for more uniform pressure, or through a pressing fixture. Additionally, a lower fixture 20 is provided during the printing process, and the decorative plate 10 is positioned on the lower fixture 20.
[0039] Understandably, the flexible imprinting mold 100 is a pre-made silicone mold with a target ID design texture 130, which is precisely pressed onto the surface of the imprinting layer after uncured / semi-cured treatment. Through pressure, the micro-texture 130 on the silicone mold is completely "imprinted" and replicated onto the uncured / semi-cured imprinting layer.
[0040] In one embodiment, such as Figure 3As shown, the flexible printing mold 100 is integrally formed. Specifically, the integrally formed flexible printing mold 100 includes a first upper mold 210 and a first lower mold 220. The outer side of the first lower mold 220 is provided with a texture 130. The space enclosed by the first upper mold 210 and the first lower mold 220 is filled with silicone and cured to form a silicone mold.
[0041] Furthermore, texture 130 is fabricated using photolithography, laser engraving, or a five-axis CNC machining center, resulting in higher processing precision. The thickness of the formed flexible printing mold 100 must be at least 1mm to ensure the printed texture 130 does not deform. More specifically, the thickness of the flexible printing mold 100 is greater than 3mm, and the silicone hardness is Shore A 65-75 degrees. It is worth noting that setting the hardness of the flexible printing mold 100 too high will reduce its reusability; setting it too low will cause distortion of the printed texture. For example, a silicone hardness of A 65-75 degrees for the flexible printing mold 100 achieves the best balance between reusability and printed texture effect.
[0042] In other embodiments, such as Figures 4-6 As shown, the flexible printing mold 100 includes a primary silicone layer 310. The inner side of the primary silicone layer 310 has a texture 130 and is used to form the printing cavity 120. Alternatively, the flexible printing mold 100 also includes a secondary silicone layer 320, which is disposed on the outer side of the primary silicone layer 310. Specifically, the primary silicone layer 310 is planar. The primary silicone layer 310 is then placed in the second lower mold 340, with the side having the texture 130 abutting against the outer side of the second lower mold 340. The second upper mold 330 is then engaged, and secondary silicone is injected, causing the primary silicone layer 310 to adhere to the outer side of the second lower mold 340. It can be understood that the outer side of the second lower mold 340 is adapted to the decorative panel 10. After the secondary silicone is injected, the silicone is molded, cured, and forms the secondary silicone layer 320, thus connecting the primary silicone layer 310 and the secondary silicone layer 320 to form the flexible printing mold 100. In addition, those skilled in the art can decide whether to spray a bonding layer on the bonding surface of the primary silicone layer 310 and the secondary silicone layer 320 based on their types and characteristics, without making specific limitations here.
[0043] Finally, the decorative layer formed by the above processing method can also undergo reliability performance tests, such as adhesion testing, RCA abrasion resistance testing, alcohol resistance testing, rubber friction testing, bending testing, dirt resistance testing, pencil hardness testing, surface energy testing, boiling water testing, cosmetic resistance testing, salt spray testing, high temperature and high humidity testing, sweat resistance testing, and steel wool abrasion resistance testing.
[0044] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.
Claims
1. A method for processing a decorative layer on an electronic device, characterized in that, include: An inner functional membrane layer is installed on the outer side of the decorative panel; An imprinting layer is provided on the outer side of the inner functional membrane layer. The imprinting layer is provided by: applying an external force to stretch the flexible imprinting mold outward in a circumferential direction and fitting it onto the outer side of the decorative panel; removing the external force to allow the flexible imprinting mold to adhere to the outer side of the imprinting layer and completing the imprinting process.
2. The method for processing a decorative layer for an electronic device according to claim 1, characterized in that, Rubbings include: Printing on the uncured printing layer, or printing on the semi-cured printing layer after the printing layer has been partially cured. The process after imprinting includes: curing the imprinted layer.
3. The method for processing a decorative layer for an electronic device according to claim 1, characterized in that, Before curing the imprint layer, the process includes: removing the flexible imprint mold; or after curing the imprint layer, the process includes: removing the flexible imprint mold.
4. The method for processing a decorative layer for an electronic device according to claim 1, characterized in that, After the rubbing is completed, the process also includes: sequentially setting an inner texture covering layer and an outer functional film layer on the outside of the rubbing layer; and setting another rubbing layer on the outside of the outer functional film layer.
5. The method for processing a decorative layer for an electronic device according to claim 1, characterized in that, The inner texture covering layer is a coating layer; The external functional film layer includes a UV layer; and / or a PU layer; and / or a metallic film layer; and / or a logo layer.
6. The method for processing a decorative layer for an electronic device according to claim 1, characterized in that, The flexible printing mold includes an installation port and a printing cavity, wherein the inner diameter of the installation port is smaller than the inner diameter of the printing cavity.
7. The method for processing a decorative layer for an electronic device according to claim 1, characterized in that, The flexible printing mold is integrally formed.
8. The method for processing a decorative layer for an electronic device according to claim 1, characterized in that, The one-piece flexible printing mold includes a first upper mold and a first lower mold. The outer side of the first lower mold is provided with a texture. The texture is made by photolithography, laser engraving or a five-axis CNC machining center. The first upper mold and the first lower mold are joined together and filled with silicone to form the flexible printing mold.
9. The method for processing a decorative layer for an electronic device according to claim 1, characterized in that, The flexible printing mold includes a primary silicone layer, the printing cavity being formed on the inner side of the primary silicone layer; or the flexible printing mold further includes a secondary silicone layer, the secondary silicone layer being disposed on the outer side of the primary silicone layer.
10. An electronic device, characterized in that, A decorative panel is provided, wherein the decorative panel is provided with a decorative layer formed by the processing method of the electronic device decorative layer as described in any one of claims 1-9.