Terminal device cover plate and application thereof

By introducing a soft elastic layer and multiple substrate texture layers into the cover plate of the terminal device, combined with adhesive layers and plating layers, a variety of color texture and light and shadow effects are achieved, solving the problem of limited color selection of PU leather materials and improving the user experience.

CN117621565BActive Publication Date: 2026-07-24BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Filing Date
2022-08-12
Publication Date
2026-07-24

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Abstract

The present disclosure relates to a terminal device cover plate, comprising: a bottom substrate and a touch layer; the bottom substrate is selected from one of a substrate texture layer, a flat substrate bonded with a resin texture layer, a flat substrate coated with a color layer and a substrate texture layer coated with a color layer; the visible light transmittance of the touch layer ranges from 15% to 94%; the touch layer comprises a soft elastic layer and a glue layer attached to the soft elastic layer. The terminal device cover plate provided by the present disclosure has soft elastic touch, and the color texture light and shadow can be adjusted according to actual needs, and has a differentiated appearance effect with rich color texture light and shadow.
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Description

Technical Field

[0001] This disclosure relates to the field of electronic product cover technology, specifically to a terminal device cover and its application. Background Technology

[0002] As electronic products are constantly being updated and iterated, their appearances are becoming increasingly homogenized. PU leather (primarily made of polyurethane) is widely used in flagship electronic products due to its soft and elastic leather feel and diverse decorative effects. However, the surface of PU leather used in commercially available electronic products is limited by the color of the resin itself, resulting in fewer and fewer options for visual effects. Therefore, under the premise of a similar user experience, there is an urgent need to seek new decorative solutions to bring users a better visual experience and enhance product competitiveness. Summary of the Invention

[0003] The purpose of this disclosure is to provide a cover for electronic devices that is comfortable to the touch and comes in a variety of colors and textures.

[0004] To achieve the above objectives, the first aspect of this disclosure provides a terminal device cover plate, comprising: a substrate located at the bottom layer of the cover plate and a tactile layer located at the surface layer of the cover plate;

[0005] The substrate is selected from one of the following: a substrate texture layer, a planar substrate with a resin texture layer bonded together, a planar substrate coated with a color layer, and a substrate texture layer coated with a color layer.

[0006] The visible light transmittance of the tactile layer ranges from 15% to 94%; the tactile layer includes a soft elastic layer and an adhesive layer attached to the inner surface of the soft elastic layer, with the soft elastic layer located on the outermost layer of the tactile layer.

[0007] Optionally, the visible light transmittance of the tactile layer is in the range of 60% to 90%; the thickness of the soft elastic layer is 0.1 to 0.6 mm, the thickness of the adhesive layer is 0.003 to 0.15 mm, the thickness of the resin texture layer is 0.008 to 0.05 mm, the thickness of the planar substrate is 0.1 to 3 mm, and the thickness of the substrate texture layer is 0.2 to 3 mm.

[0008] Optionally, the tactile layer is a semi-transparent or transparent material layer; the material of the soft elastic layer is selected from polyurethane, thermoplastic polyurethane elastomer, silicone, or a composite material of the above materials; the material of the adhesive layer is an acrylic pressure-sensitive adhesive; the materials of the substrate texture layer and the planar substrate are each independently selected from glass fiber composite material or polymethyl methacrylate composite material, wherein the polymethyl methacrylate composite material is selected from a composite material of polycarbonate and polymethyl methacrylate, a composite material of polymethyl methacrylate and polymethyl methacrylate, or a composite material of polycarbonate and polymethyl methacrylate; the resin texture layer is a coating formed by transferring ultraviolet light-cured paint through a laser engraving mold; the material of the color layer is selected from ink or coating, wherein the ink includes epoxy resin, pigment, and additives, and the coating includes epoxy resin, pigment, and additives; wherein the additives include at least one of filler, diluent, and dispersant.

[0009] Optionally, the terminal device cover plate further includes a coating; optionally, the material of the coating is selected from one of silicon oxide, niobium oxide, silicon nitride and indium metal thin film; the thickness of the coating is 0.5 to 5 μm.

[0010] Optionally, the terminal device cover plate is composed of a planar substrate with a resin textured layer bonded thereon, a plating layer formed on the surface of the resin textured layer, and a soft elastic layer with an adhesive layer attached thereon; the soft elastic layer is bonded to the outer surface of the plating layer through the adhesive layer.

[0011] Optionally, the terminal device cover plate is composed of a planar substrate coated with a color layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the color layer through the adhesive layer, and the surface of the soft elastic layer is textured.

[0012] Optionally, the terminal device cover plate is composed of a planar substrate with a resin textured layer bonded to it and a soft elastic layer with an adhesive layer attached to it; the soft elastic layer is bonded to the outer surface of the resin textured layer through the adhesive layer.

[0013] Optionally, the terminal device cover plate is composed of a substrate texture layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the substrate texture layer through the adhesive layer.

[0014] Optionally, the terminal device cover plate is composed of a substrate texture layer coated with a color layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the color layer through the adhesive layer.

[0015] Optionally, the terminal device cover includes a color strip and a motherboard; the color strip consists of a first substrate texture layer coated with a color layer and a soft elastic layer with an adhesive layer attached, the soft elastic layer being bonded to the outer surface of the color layer through the adhesive layer; the motherboard consists of a second substrate texture layer and a soft elastic layer with an adhesive layer attached, the soft elastic layer being bonded to the outer surface of the second substrate texture layer through the adhesive layer; the first substrate texture layer and the second substrate texture layer are integrally formed; the total thickness of the color layer and the first substrate texture layer is the same as the thickness of the second substrate texture layer.

[0016] The second aspect of this disclosure provides the application of the aforementioned terminal device cover in a terminal device.

[0017] Through the above technical solution, the terminal device cover provided by this disclosure has a soft and elastic touch, and the color, texture and light and shadow can be adjusted according to actual needs, resulting in a differentiated appearance effect with rich color, texture and light and shadow.

[0018] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is the first preferred embodiment of the present disclosure;

[0021] Figure 2 This is the second preferred embodiment of the present disclosure;

[0022] Figure 3 This is the third preferred embodiment of the present disclosure;

[0023] Figure 4 This is the fourth preferred embodiment of the present disclosure;

[0024] Figure 5 This is the fifth preferred embodiment of the present disclosure;

[0025] Figure 6 This is the sixth preferred embodiment of the present disclosure.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Soft elastic layer

[0028] 2. Adhesive layer

[0029] 3. Coating

[0030] 4. Resin texture layer

[0031] 5. Planar substrate

[0032] 6. Color layer

[0033] 7. Substrate texture layer

[0034] 8. First substrate texture layer

[0035] 9. Second substrate texture layer Detailed Implementation

[0036] The following provides a detailed description of specific embodiments of this disclosure. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit this disclosure.

[0037] The first aspect of this disclosure provides a terminal device cover, including: a substrate located at the bottom layer of the cover and a tactile layer located at the surface layer of the cover;

[0038] The substrate is selected from one of the following: a substrate texture layer, a planar substrate with a resin texture layer bonded together, a planar substrate coated with a color layer, and a substrate texture layer coated with a color layer.

[0039] The visible light transmittance of the tactile layer ranges from 15% to 94%; the tactile layer includes a soft elastic layer and an adhesive layer attached to the inner surface of the soft elastic layer, with the soft elastic layer located on the outermost layer of the tactile layer.

[0040] The tactile layer disclosed herein includes a bottom substrate and a soft and elastic layer. The bottom substrate can have different texture effects as needed, and the outer surface of the terminal device cover plate disclosed herein can have a soft and elastic tactile feel. The terminal device cover plate provided by this disclosure has a soft and elastic tactile feel, and the color, texture, light and shadow can be adjusted according to actual needs, resulting in a differentiated appearance effect with rich color, texture, light and shadow.

[0041] According to this disclosure, the visible light transmittance of the tactile layer is in the range of 60% to 90%; the thickness of the soft elastic layer can be 0.1 to 0.6 mm, the thickness of the adhesive layer can be 0.003 to 0.15 mm, the thickness of the resin texture layer can be 0.008 to 0.05 mm, the thickness of the planar substrate can be 0.1 to 3 mm, and the thickness of the substrate texture layer can be 0.2 to 3 mm.

[0042] In this disclosure, the tactile layer can be a semi-transparent or transparent material layer, and the material of the soft elastic layer can be selected from polyurethane, thermoplastic polyurethane elastomer, silicone, or a composite material of the above materials; the material of the adhesive layer can be an acrylic pressure-sensitive adhesive. The adhesive layer in this disclosure is an optical grade adhesive layer, which is attached to the soft elastic layer by means of adhesive film heating and superposition, dispensing, or coating, and plays a role in fixing and adhering the soft elastic layer.

[0043] The materials of the substrate texture layer and the planar substrate described in this disclosure can each be independently selected from glass fiber composite materials or polymethyl methacrylate (PMMA) composite materials. The PMMA composite material can be selected from composite materials of polycarbonate and PMMA, PMMA and PMMA, or polycarbonate and PMMA. The substrate texture layer of this disclosure can be formed on the substrate surface with decorative effects such as texture, pattern, and graphics through methods such as die extrusion, die injection molding, laser engraving, and machining. The resin texture layer of this disclosure can be a coating formed by transferring ultraviolet-cured paint through a laser-engraved mold.

[0044] The material of the color layer described in this disclosure can be selected from inks or coatings. The inks include epoxy resins, pigments, and additives, and the coatings can include epoxy resins, pigments, and additives. The additives can be selected from at least one of fillers, diluents, and dispersants. The color layer of this disclosure can be applied to a substrate layer by printing, spraying, or other methods to achieve an overall color effect.

[0045] According to this disclosure, the terminal device cover may further include a coating; optionally, the material of the coating is selected from silicon oxide, niobium oxide, silicon nitride, and indium metal thin films; the thickness of the coating is 0.5–5 μm. As is well known to those skilled in the art, the coating can be formed by magnetron sputtering or evaporation.

[0046] One preferred embodiment of this disclosure is as follows: Figure 1 As shown, the terminal device cover plate is composed of a planar substrate with a resin textured layer bonded thereon, a plating layer formed on the surface of the resin textured layer, and a soft elastic layer with an adhesive layer attached thereon; the soft elastic layer is bonded to the outer surface of the plating layer through the adhesive layer.

[0047] One preferred embodiment of this disclosure is as follows: Figure 2 As shown, the terminal device cover plate is composed of a planar substrate coated with a color layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the color layer through the adhesive layer, and the surface of the soft elastic layer is textured.

[0048] One preferred embodiment of this disclosure is as follows: Figure 3 As shown, the terminal device cover plate is composed of a planar substrate with a resin textured layer bonded to it and a soft elastic layer with an adhesive layer attached to it; the soft elastic layer is bonded to the outer surface of the resin textured layer through the adhesive layer.

[0049] One preferred embodiment of this disclosure is as follows: Figure 4 As shown, the terminal device cover plate is composed of a substrate texture layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the substrate texture layer through the adhesive layer.

[0050] One preferred embodiment of this disclosure is as follows: Figure 5 As shown, the terminal device cover plate is composed of a substrate texture layer coated with a color layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the color layer through the adhesive layer.

[0051] One preferred embodiment of this disclosure is as follows: Figure 6 As shown, the terminal device cover includes a color strip and a motherboard; the color strip consists of a first substrate texture layer coated with a color layer and a soft elastic layer with an adhesive layer attached, the soft elastic layer being bonded to the outer surface of the color layer through the adhesive layer; the motherboard consists of a second substrate texture layer and a soft elastic layer with an adhesive layer attached, the soft elastic layer being bonded to the outer surface of the second substrate texture layer through the adhesive layer; the first substrate texture layer and the second substrate texture layer are integrally formed; the total thickness of the color layer and the first substrate texture layer is the same as the thickness of the second substrate texture layer.

[0052] The second aspect of this disclosure provides the application of the aforementioned terminal device cover plate in a terminal device, preferably a mobile communication device. Applying the terminal device cover plate of this disclosure to a terminal device can achieve a differentiated appearance effect with rich colors, textures, and light and shadows while maintaining the soft, elastic feel of leather.

[0053] The preferred embodiments of this disclosure have been described in detail above. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0054] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0055] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A cover plate for a terminal device, characterized in that, include: The substrate located at the bottom layer of the cover plate and the tactile layer located on the surface of the cover plate; The substrate is selected from one of the following: a substrate texture layer, a planar substrate with a resin texture layer bonded together, a planar substrate coated with a color layer, and a substrate texture layer coated with a color layer. The visible light transmittance of the tactile layer is in the range of 15-94%; the tactile layer includes a soft elastic layer and an adhesive layer attached to the inner surface of the soft elastic layer, the soft elastic layer being the outermost layer of the tactile layer; the thickness of the soft elastic layer is 0.1-0.6 mm, and the thickness of the adhesive layer is 0.003-0.15 mm; the material of the soft elastic layer is selected from polyurethane, thermoplastic polyurethane elastomer, silicone, or a composite material of the above materials; the material of the adhesive layer is an acrylic pressure-sensitive adhesive.

2. The cover plate according to claim 1, wherein, The visible light transmittance of the tactile layer is in the range of 60% to 90%; the thickness of the resin texture layer is 0.008 to 0.05 mm; the thickness of the planar substrate is 0.1 to 3 mm; and the thickness of the substrate texture layer is 0.2 to 3 mm. The materials of the substrate texture layer and the planar substrate are each independently selected from glass fiber composite material or polymethyl methacrylate composite material. The polymethyl methacrylate composite material is selected from a composite material of polycarbonate and polymethyl methacrylate, a composite material of polymethyl methacrylate and polymethyl methacrylate, or a composite material of polycarbonate and polymethyl methacrylate. The resin texture layer is a coating formed by transferring ultraviolet-cured paint through a laser engraving mold. The material of the color layer is selected from inks or coatings, wherein the inks include epoxy resins, pigments and additives, and the coatings include epoxy resins, pigments and additives; wherein the additives include at least one of fillers, diluents and dispersants.

3. The cover plate according to claim 2, wherein, The tactile layer is a semi-transparent or transparent material layer.

4. The cover plate according to claim 1, wherein, The cover plate also includes a plating layer.

5. The cover plate according to claim 4, wherein, The coating material is selected from one of silicon oxide, niobium oxide, silicon nitride, and indium metal thin films.

6. The cover plate according to claim 4, wherein, The thickness of the coating is 0.5~5μm.

7. The cover plate according to claim 4, wherein, The cover plate consists of a planar substrate with a resin textured layer bonded thereon, a plating layer formed on the surface of the resin textured layer, and a soft elastic layer with an adhesive layer attached thereon; the soft elastic layer is bonded to the outer surface of the plating layer through the adhesive layer.

8. The cover plate according to claim 1, wherein, The cover plate consists of a planar substrate coated with a color layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the color layer through the adhesive layer.

9. The cover plate according to claim 8, wherein, The surface of the soft elastic layer is textured.

10. The cover plate according to claim 1, wherein, The cover plate consists of a planar substrate with a resin textured layer bonded to it and a soft elastic layer with an adhesive layer attached to it; the soft elastic layer is bonded to the outer surface of the resin textured layer through the adhesive layer.

11. The cover plate according to claim 1, wherein, The cover plate is composed of a substrate texture layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the substrate texture layer through the adhesive layer.

12. The cover plate according to claim 1, wherein, The cover plate consists of a substrate textured layer coated with a color layer and a soft elastic layer with an adhesive layer attached; the soft elastic layer is bonded to the outer surface of the color layer through the adhesive layer.

13. The cover plate according to claim 1, wherein, The cover plate includes a color strip and a main board; the color strip consists of a first substrate texture layer coated with a color layer and a soft elastic layer with an adhesive layer attached, the soft elastic layer being bonded to the outer surface of the color layer through the adhesive layer; the main board consists of a second substrate texture layer and a soft elastic layer with an adhesive layer attached, the soft elastic layer being bonded to the outer surface of the second substrate texture layer through the adhesive layer. The first substrate texture layer and the second substrate texture layer are integrally formed; the total thickness of the color layer and the first substrate texture layer is the same as the thickness of the second substrate texture layer.

14. The application of a cover plate according to any one of claims 1-13 in a terminal device.