Shell plate and electronic device

Abstract

The application provides a shell plate and an electronic device. The shell plate comprises a substrate, a color film layer and an electrochromic mirror film layer which are arranged in a stack. The color film layer is arranged adjacent to the electrochromic mirror film layer. The substrate is arranged on a side of the color film layer away from the electrochromic mirror film layer, or arranged on a side of the electrochromic mirror film layer away from the color film layer. The shell plate can switch between a mirror state display effect and a non-mirror state display effect, so as to improve the display effect of the electronic device.

Description

Technical Field

[0001] This application relates to the field of electronic packaging, specifically to a shell and an electronic device. Background Technology

[0002] To highlight the high-end quality of electronic devices, the aesthetic appearance of enclosures, such as back covers, is receiving increasing attention. For example, color, texture, shimmering finishes, and matte textures can be applied to the surface of the back cover, enhancing the diversity of its display effects. However, currently, commercially available electronic products do not yet offer enclosures that can switch between mirror and non-mirror display effects. Utility Model Content

[0003] This application provides a housing and an electronic device, the housing being able to switch between a mirror-like display effect and a non-mirror-like display effect to improve the display effect of the electronic device.

[0004] In a first aspect, this application provides a shell plate, which includes a substrate, a color film layer, and an electro-mirror film layer stacked together. The color film layer and the electro-mirror film layer are disposed adjacent to each other; the substrate is disposed on the side of the color film layer facing away from the electro-mirror film layer, or on the side of the electro-mirror film layer facing away from the color film layer.

[0005] The shell panel of this application has a substrate used to carry a color film layer and an electrochromic film layer. The electrochromic film layer can achieve both mirror and transparent display effects. For example, the electrochromic film layer can achieve a mirror effect under a forward voltage and a transparent effect under a reverse voltage. When the electrochromic film layer exhibits a mirror display effect, the entire shell panel can achieve a mirror display effect and can be used as a mirror. When the electrochromic film layer exhibits a transparent display effect, the entire shell panel can exhibit the display effect of the color film layer, such as multi-color, textured, glare, and frosted display effects. Therefore, compared with existing commercially available electronic devices, the shell panel of this application can present more diverse display effects, thereby enhancing the user experience.

[0006] The substrate in the shell plate of this application can be a transparent substrate or a non-transparent substrate.

[0007] In one implementation, the substrate is a transparent substrate, and an electroluminescent film layer is disposed between the substrate and the color film layer. The transparent substrate protects both the color film layer and the electroluminescent film layer, allowing their display effects to be shown through the substrate. When this shell structure is used in an electronic device, the color film layer faces inwards towards the inside of the electronic device, and the transparent substrate faces outwards, serving as the external appearance of the electronic device.

[0008] In another implementation, the substrate is a non-transparent shell, and the color film layer is disposed between the substrate and the electroluminescent film layer. When the substrate is non-transparent, to avoid obstructing the display effect of the color film layer and the electroluminescent film layer, the substrate is positioned on the side of the color film layer facing away from the electroluminescent film layer. When this shell structure is used in an electronic device, the substrate faces inward towards the inside of the electronic device, and the electroluminescent film layer faces outward towards the outside of the electronic device. To protect the electroluminescent film layer from damage, a protective layer can optionally be disposed on the surface of the electroluminescent film layer facing away from the color film layer. This protective layer can be a transparent protective layer.

[0009] In one implementation, the electroluminescent film layer includes a first electrode and a second electrode. The first electrode is connected to the color film layer, and the second electrode is disposed away from the color film layer. The edge regions of the first electrode and the second electrode are sealed together, and the sealed region between the first electrode and the second electrode is filled with an electroluminescent electrolyte.

[0010] The first and second electrodes can be connected to the positive and negative terminals of an external circuit, respectively, to supply power to the electroluminescent mirror layer. An electroluminescent electrolyte is filled between the first and second electrodes. To seal the electroluminescent electrolyte, the edge regions of the first and second electrodes are sealed together, thereby forming a sealed cavity between the first and second electrodes to contain the electroluminescent electrolyte.

[0011] In one implementation, a sealant layer is provided between the edge regions of the first electrode and the second electrode. The sealant layer is used to connect the first electrode and the second electrode, facilitating the assembly of the electroformed mirror layer.

[0012] In one implementation, the first electrode includes a first conductive layer, the second electrode includes a second conductive layer, and an electroluminescent electrolyte is filled between the first and second conductive layers. Both the first and second conductive layers are conductive thin film layers. Using a conductive thin film as the conductive layer allows for a convenient reduction in the thickness of both the first and second electrodes.

[0013] In one implementation, the first electrode further includes a first substrate, a first conductive layer is disposed on the surface of the first substrate, and the first substrate is bonded to the color film layer. Providing the first substrate in the first electrode facilitates the fabrication of the first conductive layer.

[0014] In one implementation, the second electrode further includes a second substrate, a second conductive layer is disposed on the surface of the second substrate, and a second substrate is disposed on the side of the second conductive layer opposite to the first conductive layer. Providing a second substrate in the second electrode facilitates the fabrication of the second conductive layer.

[0015] In one implementation, the area of ​​the first conductive layer is smaller than the area of ​​the first substrate, the area of ​​the second conductive layer is smaller than the area of ​​the second substrate, an encapsulating adhesive layer is provided between the edge regions of the first substrate and the second substrate, and the first conductive layer and the second conductive layer are disposed in the sealing region between the first substrate and the second substrate.

[0016] Secondly, this application provides an electronic device, which includes a housing, the housing including the shell plate of this application, and a power module disposed inside the housing. One electrode of the power module is electrically connected to a first electrode, and the other electrode is electrically connected to a second electrode.

[0017] The electronic devices covered by this application may be various mobile terminals, smart wearable devices, or electronic products. Mobile terminal products include, but are not limited to, mobile phones, tablets, desktop computers, laptops, smart screens, monitors, speakers, glasses, watches, headphones, in-vehicle products, and other electronic terminal devices related to mobile office, smart home, sports and health, audio-visual entertainment, and smart travel.

[0018] The technical effects that can be achieved in the second aspect mentioned above can be referred to the corresponding effect descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the shell plate in one embodiment;

[0020] Figure 2 This is a schematic diagram of a cross-sectional structure of a shell plate;

[0021] Figure 3 This is a schematic diagram of the structure of an electro-mirror forming film layer according to one embodiment;

[0022] Figure 4 This is a schematic diagram of the electro-mirror layer in another embodiment;

[0023] Figure 5 A schematic diagram of an electrical connection structure for an electro-optical mirror layer;

[0024] Figure 6 This is a schematic diagram of the layered structure of a cover plate according to one embodiment;

[0025] Figure 7 This is a cross-sectional structural diagram of the shell plate according to another embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the layered structure of the cover plate according to another embodiment of this application.

[0027] Figure label:

[0028] 1000 - Mobile phone; 100 - Cover plate; 10 - Substrate; 20 - Color film layer; 30 - Electroluminescent film layer; 40 - Optical adhesive;

[0029] 21-Third substrate; 22-Ink layer; 23-Coating layer; 24-Texture layer; 25-Protective paint layer;

[0030] 30a - First electrode; 30b - Second electrode;

[0031] 31-First conductive layer; 32-Second conductive layer; 33-First substrate; 34-Second substrate; 35-Electroluminescence electrolyte; 36-Sealant layer. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0033] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise.

[0034] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0035] Existing electronic devices, including but not limited to consumer electronics such as mobile phones, tablets, laptops, and watches, typically cannot change the display effect of their casings, such as back covers. Once manufactured, the display effect of the casing is fixed. For example, existing casings may display effects such as multi-color, shimmering, and leather-like textures, but during use, it is impossible to change the display effect, such as switching between a mirror-like display effect and a non-mirror-like display effect.

[0036] To improve the diversity of display effects of the shell, this application provides a shell. Figure 1This is a schematic diagram of the structure of a mobile phone back cover side according to one embodiment. The shell plate of this application can be used as the back cover plate of mobile phone 1000. Figure 2 This is a schematic diagram of a cross-sectional structure of a shell plate. For example... Figure 2 As shown, the shell plate 100 includes a substrate 10, a color film layer 20, and an electro-mirror film layer 30. The color film layer 20 and the electro-mirror film layer 30 are disposed adjacent to each other.

[0037] The substrate 10 can be a transparent substrate or a non-transparent substrate. When the substrate 10 is a transparent substrate, it can be disposed on the side of the electroluminescent mirror film layer 30 opposite to the color film layer 20. That is, when the substrate 10 is a transparent substrate, the electroluminescent mirror film layer 30 is disposed between the color film layer 20 and the substrate 10, specifically as follows: Figure 2 As shown.

[0038] The following is combined first Figure 2 The following explanation uses a transparent substrate as an example.

[0039] like Figure 2 As shown, substrate 10 is a transparent substrate. The transparent substrate may be, for example, a substrate made of transparent materials such as glass, polyethylene terephthalate (PET), polycarbonate (PC), or polymethyl methacrylate (PMMA).

[0040] When the substrate 10 is a transparent substrate, the color film layer 20, the electrochromic mirror film layer 30, and the substrate 10 are stacked sequentially. When this shell structure is used in an electronic device, the color film layer 20 faces inwards towards the electronic device, and the substrate 10 faces outwards towards the electronic device, serving as the external surface of the electronic device. The substrate 10 protects the color film layer 20 and the electrochromic mirror film layer 30, and allows the display effects of the color film layer 20 and the electrochromic mirror film layer 30 to be displayed through the substrate 10.

[0041] The electrochromic film layer 30 can achieve both mirror and transparent display effects. For example, the electrochromic film layer 30 can achieve a mirror effect under a forward voltage and a transparent effect under a reverse voltage. When the electrochromic film layer 30 exhibits a mirror display effect, the entire casing can also achieve a mirror display effect, allowing it to be used as a mirror. When the electrochromic film layer 30 exhibits a transparent display effect, the entire casing can display the effect of the color film layer 20, such as multi-color, textured, glare, or frosted effects. Therefore, compared to existing commercially available electronic devices, the casing of this application can present a wider variety of display effects, enhancing the user experience.

[0042] The following combination Figure 3The electroluminescent film layer 30 in the cover plate 100 of the present application embodiment will be explained.

[0043] Figure 3 This is a schematic diagram of the structure of an electroluminescent mirror film layer according to one embodiment. Figure 3 As shown, the electroluminescent mirror film layer 30 includes a first electrode 30a and a second electrode 30b. The first electrode 30a is connected to the color film layer 20, and the second electrode 30b is connected to the substrate 10. The edge regions of the first electrode 30a and the second electrode 30b are sealed together, and the sealed area between the first electrode 30a and the second electrode 30b is filled with an electroluminescent electrolyte 35. The first electrode 30a and the second electrode 30b can be connected to the positive and negative terminals of an external circuit to supply power to the electroluminescent mirror film layer 30. The space between the first electrode 30a and the second electrode 30b is filled with the electroluminescent electrolyte 35. To seal the electroluminescent electrolyte 35, the edge regions of the first electrode 30a and the second electrode 30b are sealed together, thereby forming a sealed cavity between the first electrode 30a and the second electrode 30b to accommodate the electroluminescent electrolyte 35.

[0044] In this embodiment, the electroluminescent electrolyte 35 may include a solvent and a solute. The solvent may include at least one of strongly polar solvents such as dimethyl sulfoxide (DMSO), N-methylpyrrolidone (NMP), and N,N-dimethylformamide (DMF).

[0045] The solute may include components such as an electroluminescent material, a supporting electrolyte, and an electrochemical medium. The electroluminescent material may be, for example, a soluble silver salt, such as AgNO3. The supporting electrolyte may be a soluble salt containing a halogen, wherein the halogen may be a formed anion or a complex anion. Examples of supporting electrolytes include tetrabutylammonium bromide (TBABr) or lithium bromide (LiBr). The electrochemical medium may be, for example, a soluble copper salt, such as CuCl2.

[0046] In the electromicroscope electrolyte 35, the molar ratio of the electromicroscope material, supporting electrolyte, and electrochemical medium can be (4-6):(23-27):1. The electromicroscope electrolyte 35 of this embodiment can be obtained by mixing the raw materials according to the above ratio. Exemplarily, in the electromicroscope electrolyte 35, the concentration of the electromicroscope material can be 20-150 mmol / L, the concentration of the supporting electrolyte can be 100-1000 mmol / L, and the concentration of the electrochemical medium can be 5-50 mmol / L.

[0047] The electroluminescent electrolyte 35 of this embodiment undergoes a redox reaction under a forward voltage condition, and Ag in the cathode electrolyte... +It will be reduced to elemental Ag and adhere to the cathode surface. If the cathode surface is flat, the elemental Ag will spread across it, forming a mirror-like surface. Under reverse voltage, the elemental Ag adhering to the cathode surface will be oxidized to Ag. + It dissolves again in the electrolyte, and the mirror surface disappears. This process of changing the state of the electrolyte can be repeated cyclically.

[0048] In the electroluminescent electrolyte 35, the concentration of the solute has a certain impact on the reflectivity of the mirror. The following compares the reflectivity of mirrors formed with different solute concentrations under the same solvent composition.

[0049] In one embodiment, in the electroluminescent electrolyte 35, the concentration of the electroluminescent material is 50 mmol / L, the concentration of the supporting electrolyte is 250 mmol / L, and the concentration of the electrochemical medium is 10 mmol / L. When the electrolyte layer thickness formed by the corresponding electroluminescent electrolyte A is 250 μm, the average visible light reflectance after mirror formation can reach 80%.

[0050] In another embodiment, in the electroluminescent electrolyte 35, the concentration of the electroluminescent material is 100 mmol / L, the concentration of the supporting electrolyte is 500 mmol / L, and the concentration of the electrochemical medium is 20 mmol / L. When the thickness of the electrolyte layer formed by the electroluminescent electrolyte is 150 μm, the average visible light reflectance after mirror formation can also reach 80%. The thickness of the electrolyte layer is the distance between the first electrode 30a and the second electrode 30b.

[0051] The above comparison shows that, for the same volume, the high-concentration electro-mirroring electrolyte 35 produces a higher mirror reflectivity. To achieve the same mirror effect, the required volume of the high-concentration electro-mirroring electrolyte 35 is smaller. Therefore, to obtain the same mirror reflectivity, the electrolyte layer corresponding to the high-concentration electrolyte is thinner.

[0052] To obtain devices with thinner electrolyte layers without affecting the mirror reflectivity, and to solve the problem of thinning when integrated into electronic devices, such as the back cover 100 of a mobile phone, embodiments of this application may use a high-concentration electro-mirror electrolyte 35.

[0053] In addition, a gel polymer, such as polyvinyl butyral (PVB), can be added to the electromicroscope electrolyte 35 in this embodiment of the application to transform the electrolyte into a gel state. Therefore, in one embodiment of this application, the state of the electromicroscope electrolyte 35 is a gel state.

[0054] Continue to refer to Figure 3In one embodiment, a sealant layer 36 is provided between the edge regions of the first electrode 30a and the second electrode 30b. The sealant layer 36 is used to connect the first electrode 30a and the second electrode 30b, facilitating the assembly of the electroluminescent film layer 30.

[0055] The sealing layer 36 between the first electrode 30a and the second electrode 30b can be formed by materials such as UV-curable adhesive, hot melt adhesive, or adhesive film.

[0056] In one implementation, the first electrode 30a includes a first conductive layer 31, and the second electrode 30b includes a second conductive layer 32. An electroluminescent electrolyte 35 is filled between the first conductive layer 31 and the second conductive layer 32. Both the first conductive layer 31 and the second conductive layer 32 are conductive thin film layers. Using a conductive thin film as the conductive layer allows for a convenient reduction in the thickness of the first electrode 30a and the second electrode 30b.

[0057] The first conductive layer 31 and the second conductive layer 32 can be independently selected from conductive metal oxides, silver nanowires, carbon material layers, inert metal meshes, etc. Conductive metal oxides can be, for example, indium tin oxide (ITO), fluorine-doped tin oxide (FTO), zinc oxide, etc. Carbon material layers can be, for example, graphite layers, graphene layers, etc. Graphene layers can be chemical vapor deposition (CVD) graphene layers.

[0058] For ease of manufacturing and assembly, such as Figure 4 As shown, the first electrode 30a may include a first substrate 33 in addition to the first conductive layer 31. The first conductive layer 31 is disposed on the surface of the first substrate 33. The first substrate 33 may be a transparent PEC substrate. Similarly, the second electrode 30b may include a second substrate 34 in addition to the second conductive layer 32. The second conductive layer 32 is disposed on the surface of the second substrate 34. In the electroluminescent film layer 30, the second substrate 10 is disposed on the side of the second conductive layer 32 facing away from the first conductive layer 31. The second substrate 34 may be a transparent PET substrate. When fabricating the first electrode 30a and the second electrode 30b, the first conductive layer 31 can be formed on the surface of the first substrate 33 and the second conductive layer 32 can be formed on the surface of the second substrate 34 by processes such as chemical vapor deposition.

[0059] When setting the sealant layer 36, the sealant layer 36 can be set between the edge regions of the first conductive layer 31 and the second conductive layer 32 to achieve sealed encapsulation of the electroluminescent electrolyte 35.

[0060] Figure 4 This is a schematic diagram of the structure of the electroluminescent mirror film 30 according to another embodiment. Figure 4 As shown, the area of ​​the first conductive layer 31 can be smaller than the area of ​​the first substrate 33, and the area of ​​the second conductive layer 32 can be smaller than the area of ​​the second substrate 34. When a sealant layer 36 is provided between the first electrode 30a and the second electrode 30b, the sealant layer 36 can be provided between the edge regions of the first substrate 33 and the second substrate 10. The first conductive layer 31 and the second conductive layer 32 are provided within the sealing region between the first substrate 33 and the second substrate 34. In this structure, the sealant layer 36 does not occupy the area of ​​the first conductive layer 31 and the second conductive layer 32, avoiding waste of the first conductive layer 31 and the second conductive layer 32.

[0061] During assembly, the electroluminescent mirror film layer 30 can first be formed on the surface of the first substrate 33 using chemical vapor deposition, and then a second conductive layer 32 can be formed on the surface of the second substrate 34. Then, the first substrate 33 and the second substrate 34 are bonded and fixed using a sealant layer 36 and a liquid injection hole is reserved. Then, the electroluminescent mirror electrolyte 35 is injected into the space between the first electrode 30a and the second electrode 30b and the liquid injection hole is sealed.

[0062] The method for injecting the electroluminescent electrolyte 35 may include the following: 1) filling the cavity between the first electrode 30a and the second electrode 30b with the electroluminescent electrolyte 35 through capillary effect; 2) directly injecting the electroluminescent electrolyte 35 into the cavity between the first electrode 30a and the second electrode 30b through vacuum injection or atmospheric pressure injection. After filling, the injection hole of the cavity is sealed with glue to complete the encapsulation.

[0063] In another embodiment, the electroluminescent electrolyte 35 can be applied to the surface of the first conductive layer 31 and / or the second conductive layer 32 by methods such as scraping, coating, or inkjet printing, and then the first electrode 30a and the second electrode 30b can be bonded to complete the encapsulation.

[0064] Refer to together Figures 2 to 4 In the cover plate 100, the first substrate 33 can be bonded to the color film layer 20. The second substrate 34 can be bonded to the substrate 10. The adhesive layer between the first substrate 33 and the color film layer 20 and the adhesive layer between the second substrate 34 and the substrate 10 can both be optically clear adhesive (OCA) layers.

[0065] In the cover plate 100 of this application embodiment, by applying current to the electro-mirror forming film layer 30, the electro-mirror forming electrolyte 35 in the electro-mirror forming film layer 30 can undergo an oxidation-reduction reaction, thereby forming a mirror effect and a transparent effect. Figure 5 This is a schematic diagram of an electrical connection structure for the electroluminescent mirror film layer 30. (See diagram below.) Figure 5As shown, the first conductive layer 31 and the second conductive layer 32 are connected to an external power source. The conductive layer on the cathode side has a mirror-like state. When the reverse current is applied, the mirror-like state disappears, revealing a certain degree of transparency. The first conductive layer 31 and the second conductive layer 32 in the electroluminescent film layer 30 can be connected to the internal power supply device of the electronic device, such as the motherboard or battery of the electronic device.

[0066] The first conductive layer 31 and the second conductive layer 32 can be connected to external circuits via pre-embedded wires. The pre-embedded wires can extend from the sealant layer 36, or from the first substrate 33 and the second substrate 34. The specific connection method is not limited in this application and can be designed according to the actual connection relationship.

[0067] Figure 6 This is a schematic diagram of the layered structure of a cover plate 100 according to one embodiment. Figure 6 As shown, in this embodiment, the electroluminescent film layer 30 in the cover plate 100 can be... Figure 4 Electroluminescent mirror film layer 30 with the structure shown. Figure 6 In the illustrated embodiment, the color film layer 20 may include a third substrate 21 and optional texture layer 24, coating layer 23, and ink layer 22. The texture layer 24, coating layer 23, and ink layer 22 may be sequentially disposed on the surface of the third substrate 21. That is, the texture layer 24 is disposed on the surface of the third substrate 21, the coating layer 23 is disposed on the surface of the texture layer 24, and the ink layer 22 is disposed on the surface of the coating layer 23. The texture layer 24 can mimic the texture effects of brushed metal, leather, wood grain, etc., enhancing the product's texture. The coating layer 23 can form a metallic texture layer. The ink layer 22 can form different colors, gradient colors, fine patterns, and other display effects, improving the product's appearance and texture. The texture layer 24, coating layer 23, and ink layer 22 may coexist, or only some layers may be present. When all the above layers coexist, a more diverse range of pattern display effects can be formed.

[0068] The third substrate 21 is disposed facing the electroluminescent film layer 30, and the third substrate 21 and the first substrate 33 can be bonded together by optical adhesive 40. The ink layer 22 is disposed facing the interior of the electronic device.

[0069] like Figure 6 The cover plate 100 of the shown structure, when a positive voltage is applied to the first electrode 30a and the second electrode 30b, such as when the first electrode 30a is connected to the positive terminal of the power supply and the second electrode 30b is connected to the negative terminal of the power supply, the Ag located near the second electrode 30b... +Elemental Ag formed by a reduction reaction forms a mirror-like surface on the surface of the second electrode 30b. At this time, due to the formation of the mirror, the entire cover plate 100 displays a mirror effect when viewed from the substrate 10 side, and the pattern of the color film layer 20 is obscured by the mirror. When a reverse voltage is applied to the first electrode 30a and the second electrode 30b, the Ag on the surface of the second electrode 30b undergoes an oxidation reaction, forming Ag... + This makes the electroluminescent film layer 30 transparent. When viewed from the substrate 10 side, the entire cover plate 100 displays the pattern of the color film layer 20. Thus, the cover plate 100 of this embodiment can achieve multiple display effects.

[0070] In production Figure 6 When the cover plate 100 with the structure shown is installed, an electroluminescent film layer 30 can be attached to the inner surface of the substrate 10, that is, the surface facing the electronic device, and then a color film layer 20 can be attached to the inner surface of the electroluminescent film layer 30.

[0071] The structure of the cover plate 100 when the substrate 10 is a transparent substrate has been explained above. The following will combine... Figure 7 and Figure 8 The structure of the cover plate 100 when the substrate 10 is a non-transparent substrate is explained.

[0072] Figure 7 This is a cross-sectional structural diagram of the shell plate according to another embodiment of this application. Figure 7 As shown, when the substrate 10 is a non-transparent substrate, the substrate 10 can be disposed on the side of the color film layer 20 that is opposite to the electroluminescent mirror film layer 30, that is, the color film layer 20 is disposed between the substrate 10 and the electroluminescent mirror film layer 30.

[0073] like Figure 7 As shown, when the substrate 10 is a non-transparent substrate, in order to avoid the substrate 10 blocking other layers, during the assembly of the electronic device, the non-transparent substrate is positioned facing the inside of the electronic device, and the electroluminescent film layer 30 is positioned facing the outside of the electronic device. The non-transparent substrate can be, for example, a substrate 10 made of non-transparent materials such as glass fiber or polyethylene naphthalate (PEN).

[0074] in, Figure 7 In the structure of the cover plate 100 shown, the structure of the electroluminescent film layer 30 can be as follows: Figure 3 and Figure 4 The electroluminescent mirror film 30 is shown in the diagram. The specific structure of the electroluminescent mirror film 30 will not be explained further here. The following will use… Figure 4 The structure of the cover plate 100 with a non-transparent substrate will be explained using the electroluminescent mirror film layer 30 shown as an example.

[0075] In the cover plate 100, the first electrode 30a of the electroluminescent film layer 30 and the color film layer 20 can be bonded together using optical adhesive 40. The second electrode 30b of the electroluminescent film layer 30 can be disposed facing the outside of the electronic device. Optionally, to prevent wear on the electroluminescent film layer 30, a protective layer can be disposed on the outer surface of the second electrode 30b to protect the electroluminescent film layer 30. The color film layer 20 is disposed between the substrate 10 and the electroluminescent film layer 30. When the electroluminescent film layer 30 forms a mirror surface when energized, the cover plate 100 displays a mirror effect. When a directional voltage is applied to the electroluminescent film layer 30, the electroluminescent film layer 30 forms a transparent layer, and the cover plate 100 displays the color rendering effect of the color film layer 20.

[0076] The following combination Figure 8 The structure of the color film layer 20 is explained. Figure 8 This is a schematic diagram of the layered structure of the cover plate 100 according to another embodiment of this application. Figure 8 As shown, the color film layer 20 in the cover plate 100 may include an ink layer 22, a texture layer 24, a coating layer 23, and a protective varnish layer 25. The ink layer 22, texture layer 24, coating layer 23, and protective varnish layer 25 are sequentially stacked from the substrate 10 to the electrochromic mirror film layer 30. The ink layer 22, texture layer 24, coating layer 23, and protective varnish layer 25 are... Figure 5 The ink layer 22, texture layer 24, and coating layer 23 in the structure shown are the same and will not be described again here. The protective paint layer 25 can be used to protect the ink layer 22, texture layer 24, and coating layer 23 from damage. When fabricating the color film layer 20 of the cover plate 100, the ink layer 22, texture layer 24, coating layer 23, and protective paint layer 25 can be formed sequentially on the surface of the substrate 10, thereby forming the color film layer 20 directly on the surface of the substrate 10.

[0077] Figure 8 When manufacturing the cover plate 100 with the structure shown, a color film layer 20 can first be printed or attached to the outer surface of the non-transparent substrate, that is, the side facing the outside of the electronic device, and then an electroluminescent film layer 30 can be attached to the outer surface of the color film layer 20.

[0078] The structure of cover plate 100 has been explained above. Its activation method will be explained below.

[0079] The activation scheme for the electroluminescent mirror film 30 can be software one-click control, voice activation, tap activation, or call activation, effectively meeting the diverse personalized or customized needs of consumers. For example, software one-click activation allows setting up a "mirror" mini-program in the electronic device, which can be clicked to display the mirror image. In one display mode, under normal display conditions, the cover plate 100 can display the pattern effect of the color film 20; when the electroluminescent mirror function is activated, the cover plate 100 displays a mirror effect, obscuring the effect of the original color film 20.

[0080] Based on the same technical objective, this application provides an electronic device that may include the cover plate 100 of this application embodiment. The electronic device of this application includes, but is not limited to, mobile terminal devices such as mobile phones, laptops, tablets, and watches, or outdoor display devices, vehicle-mounted devices, etc. The cover plate 100 of this application embodiment can serve as a partial encapsulation shell for the electronic device to provide different display effects.

[0081] The above are merely specific embodiments 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 scope of the technology 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 shell plate, characterized in that, include: A substrate, a color film layer, and an electroluminescent film layer are stacked together; The color film layer is disposed adjacent to the electroluminescent film layer; The substrate is disposed on the side of the color film layer away from the electroluminescent film layer, or on the side of the electroluminescent film layer away from the color film layer.

2. The shell plate according to claim 1, characterized in that, The electroluminescent film layer includes a first electrode and a second electrode, wherein the first electrode is connected to the color film layer and the second electrode is disposed away from the color film layer; The edge regions of the first electrode and the second electrode are sealed together, and the sealed region between the first electrode and the second electrode is filled with an electroluminescent electrolyte.

3. The shell plate according to claim 2, characterized in that, A sealant layer is provided between the edge regions of the first electrode and the second electrode.

4. The shell plate according to claim 2 or 3, characterized in that, The first electrode includes a first conductive layer, the second electrode includes a second conductive layer, and the electroluminescent electrolyte is filled between the first conductive layer and the second conductive layer. Both the first conductive layer and the second conductive layer are conductive thin film layers.

5. The shell plate according to claim 4, characterized in that, The first electrode further includes a first substrate, the first conductive layer is disposed on the surface of the first substrate, and the first substrate is bonded to the color film layer.

6. The shell plate according to claim 5, characterized in that, The second electrode further includes a second substrate, the second conductive layer is disposed on the surface of the second substrate, and the second substrate is disposed on the side of the second conductive layer opposite to the first conductive layer.

7. The shell plate according to claim 6, characterized in that, The area of ​​the first conductive layer is smaller than the area of ​​the first substrate, the area of ​​the second conductive layer is smaller than the area of ​​the second substrate, an encapsulating adhesive layer is provided between the edge regions of the first substrate and the second substrate, and the first conductive layer and the second conductive layer are disposed in the sealing area between the first substrate and the second substrate.

8. The shell plate according to any one of claims 1-3, characterized in that, The substrate is a transparent substrate, and the electroluminescent film layer is disposed between the substrate and the color film layer.

9. The shell plate according to any one of claims 1-3, characterized in that, The substrate is a non-transparent substrate, and the color film layer is disposed between the substrate and the electroluminescent film layer.

10. An electronic device, characterized in that, The package includes a housing, the housing comprising a shell plate as described in any one of claims 1-9, the housing containing a power module, one electrode of the power module being electrically connected to the first electrode, and the other electrode being electrically connected to the second electrode.

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