WO2021258953A1 - 壳体组件及其制备方法、电子设备 - Google Patents

壳体组件及其制备方法、电子设备 Download PDF

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Publication number
WO2021258953A1
WO2021258953A1 PCT/CN2021/095494 CN2021095494W WO2021258953A1 WO 2021258953 A1 WO2021258953 A1 WO 2021258953A1 CN 2021095494 W CN2021095494 W CN 2021095494W WO 2021258953 A1 WO2021258953 A1 WO 2021258953A1
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WIPO (PCT)
Prior art keywords
layer
holographic
holographic material
housing assembly
material layer
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PCT/CN2021/095494
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English (en)
French (fr)
Inventor
林志龙
卢湘武
吉斌
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Oppo广东移动通信有限公司
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Publication of WO2021258953A1 publication Critical patent/WO2021258953A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H05K5/0243—Mechanical details of casings for decorative purposes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005—Adaptation of holography to specific applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0279—Improving the user comfort or ergonomics
    • H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005—Adaptation of holography to specific applications
    • G03H2001/0055—Adaptation of holography to specific applications in advertising or decorative art

Definitions

  • the present disclosure relates to the technical field of electronic equipment, and in particular, to a housing assembly and a preparation method thereof, and electronic equipment.
  • the decorative films include laminated substrates, color layers, and photosensitive adhesive transfer. Layer, coating layer and bottom oil film layer to make the glass shell present a colorful appearance.
  • the basic structure of the current decorative film is the combination of different color layers, different coating film system structures, and different photosensitive adhesive transfer textures on the substrate to achieve differentiation, and the homogeneity is relatively serious.
  • the difference lies in the color process or the light and shadow effect, which has larger limitations and higher cost, and the effect of the decorative film is flat, no three-dimensional effect, and no strong visual impact, which affects the appearance of electronic equipment.
  • the inventor found that there is currently a solution to install a naked eye 3D diaphragm on the glass housing.
  • the principle is that the array lens refracts different display content to different places in the space through the refraction of light. When it reaches the human eye The displayed content is separated, and the human eye receives two images with parallax, which produces a three-dimensional effect.
  • the above solution presents a poor stereo perception, limited depth of field, and thicker lens array thickness, resulting in a thicker film material, which is not conducive to the thinning of electronic equipment, and the lens array is attached to the glass substrate. At this time, it is also necessary to consider the issue of refractive index, and the design is complicated. If an adhesive layer is provided on one side of the lens array and attached to the glass substrate, the 3D effect will be invalid.
  • the present disclosure aims to alleviate or solve at least one of the above-mentioned problems to at least a certain extent.
  • the present disclosure proposes a housing assembly.
  • the housing assembly includes: a housing base, the housing base is a transparent base; a decorative film, the decorative film is arranged on one side of the housing base, the decorative film includes a laminated A transparent substrate, a holographic material layer and a transparent glue layer, the transparent glue layer is arranged close to the shell base, and the holographic material layer has holographic interference fringes inside.
  • the present disclosure proposes an electronic device.
  • the electronic device includes: the aforementioned housing assembly, the housing assembly includes a back shell and a side wall connected to the back shell, the side wall and the back shell define an accommodation space; a display screen and The main board, the display screen and the main board are located inside the accommodating space, the main board is arranged close to the decorative film, and the display screen and the main board are electrically connected.
  • the present disclosure proposes a method of preparing a housing assembly.
  • the method includes: forming a holographic material layer on one side of a transparent substrate so that there are holographic interference fringes inside the holographic material layer; forming a transparent adhesive layer on the side of the holographic material layer away from the transparent substrate to Obtaining a decorative film; attaching the transparent adhesive layer of the decorative film to one side of a housing base to obtain the housing assembly, and the housing base is a transparent base.
  • Fig. 1 shows a schematic structural diagram of a housing assembly according to an example of the present disclosure
  • Figure 2 shows a schematic structural diagram of a housing assembly according to another example of the present disclosure
  • Fig. 3 shows a schematic structural diagram of a housing assembly according to another example of the present disclosure
  • Figure 4 shows a schematic flow chart of a method for preparing a housing assembly according to an example of the present disclosure
  • Fig. 5 shows a schematic structural diagram of an electronic device according to an example of the present disclosure.
  • 100 transparent substrate; 200: holographic material layer; 300: transparent adhesive layer; 400: bottom cover oil film layer; 600: color layer; 700: photosensitive adhesive transfer layer; 800: coating layer; 900: shell substrate; 1000 : Shell components.
  • the present disclosure proposes a housing assembly.
  • the housing assembly includes: a housing base 900 and a decorative film.
  • the housing base 900 is a transparent base.
  • the decorative film is disposed on one side of the housing base 900.
  • the decorative film includes a transparent substrate 100, a holographic material layer 200, and a transparent glue layer 300 stacked in sequence.
  • the transparent glue layer 300 is arranged close to the housing base 900 (that is, the holographic material layer 200 is arranged on a transparent glue layer 300 away from the housing base 900).
  • the transparent substrate 100 is arranged on the side of the holographic material layer 200 away from the transparent adhesive layer 300), and the holographic material layer 200 has holographic interference fringes inside.
  • the housing assembly can present a realistic three-dimensional image with a strong sense of three-dimensional depth of field, and the image can move with different viewing angles, which brings a strong visual impact to the user and greatly improves the housing
  • the appearance of the component is expressive, and the housing component has high appearance stability.
  • the holographic interference fringes inside the holographic material layer can be observed through a magnifying glass.
  • the holographic material layer of the present disclosure has holographic interference fringes inside.
  • the refractive index of the material at the position of the interference fringe is different from the refractive index of the material at other positions, so that the holographic material layer constitutes a diffraction grating.
  • the incident beam Diffraction occurs to present the image of the recorded object, and the human eye can observe the image of multiple sides of the recorded object, and the image will move with different viewing angles.
  • the recorded object is a car, and the user is looking at it. When decorating the film, you can see the front of the car.
  • the holographic material layer also has the following advantages:
  • the holographic material layer can be repeatedly exposed and recorded multiple times, and the image obtained during reproduction does not affect each other;
  • the holographic material layer records interference fringes, so even if the holographic material layer is torn or damaged, it can still present a complete three-dimensional image of the original object;
  • the three-dimensional and depth-of-field perception of the holographic material layer is stronger than that of the naked-eye 3D film described above, and the thickness of the holographic material layer is thinner than that of the naked-eye 3D film, which does not affect the overall thickness of the housing assembly.
  • the holographic material layer is arranged between the transparent substrate and the transparent glue layer, and can be easily attached to the shell substrate without affecting the appearance effect of the holographic material layer.
  • the holographic interference fringes in the holographic material layer of the present disclosure can be formed by performing holographic photography on the holographic material.
  • the light emitted by the laser is divided into two coherent light waves, and one light beam is reflected and directly projected through the beam expansion
  • the reference light another beam of light is reflected and then irradiated on the object by beam expansion, and then projected on the holographic material after being reflected by the object, that is, the object light.
  • the reference light and the object light interfere with each other on the holographic material.
  • Holographic interference fringes constitute an interference fringe pattern (hologram).
  • the interference fringes record the amplitude information and phase information of the object light in the form of optical encoding.
  • the interference fringes make the holographic material layer form a diffraction grating, so that when white light irradiates the holographic material layer , The incident light beam is diffracted, so that the original object light is reproduced, and because the interference fringe records the phase information of the object light, the human eye can observe the three-dimensional image of the recorded object.
  • the housing base may be a glass base, a polymer base (the polymer may be at least one of PET, PC, and PMMA), a metal base, or a ceramic base.
  • the holographic material layer of the present disclosure is arranged between the transparent substrate and the transparent adhesive layer, so that the transparent substrate and the transparent adhesive layer can have a good protective effect on the holographic material layer and improve the stability of the appearance of the decorative film.
  • the holographic material may include a photosensitive composition.
  • the diffraction efficiency of the hologram formed by the holographic material of the photosensitive composition is greater than 95%, which is higher than other holographic materials (for example, the diffraction efficiency of the silver halide emulsion hologram is about 40%), which makes the decoration
  • the diaphragm can present transparent and bright images, and the resolution of the hologram formed by the holographic material of the photosensitive composition is above 7000 lines/mm, which has a higher resolution than other holographic materials (such as dichrome)
  • the maximum resolution of the salt gelatin hologram is 5000 pieces/mm), which makes the decorative film present a clearer image and further enhances the appearance and expressiveness of the shell assembly.
  • diffraction efficiency refers to the ratio of the luminous flux of the hologram diffraction imaging to the total flux of the reconstructed illumination light.
  • Resolution refers to the number of interference fringes per millimeter in the hologram.
  • dichromate gelatin is sensitive to temperature and bacterial reactions, and is sensitive to environmental temperature and humidity. It is afraid of humidity, unstable images, easy to erase, and chromium is toxic to humans. Therefore, dichromate gelatin is not suitable For electronic equipment. After the silver halide latex is holographically photographed, it needs to be developed in a specific time under a certain concentration of developer and temperature. The process is complicated and the process control is difficult. However, the photosensitive composition does not need to be developed after holographic photography, and the production process is simple.
  • the photosensitive composition holographic material has better boiling resistance and UV resistance than silver halide latex, which can be well matched to the application environment of electronic devices, so that electronic devices can present a good three-dimensional The appearance effect at the same time makes the appearance of the electronic device have a higher stability.
  • the photosensitive composition may include a photoinitiator, a photosensitive polymerization monomer, and a carrier polymer.
  • the photoinitiator is used to absorb a certain wavelength of energy to generate free radicals, cations, etc., thereby initiating the polymerization, cross-linking and curing of the photosensitive polymerized monomers
  • the carrier polymer is used to carry the photosensitive polymerized monomers to prevent the photosensitive polymerized monomers from gathering together
  • holographic interference fringes can be formed in the holographic material layer.
  • the specific materials of the above-mentioned components are not particularly limited, and those skilled in the art can design according to specific conditions.
  • the photosensitive polymerizable monomer may specifically be a vinyl monomer.
  • the photoinitiator When the photosensitive composition is subjected to holography, that is, when the photosensitive composition is exposed to laser light, the photoinitiator generates free radicals under the action of laser energy of a specific wavelength, and initiates the polymerization effect to cause the small molecules or monomers in the system to be
  • the refractive index of the material at the position where the polymerization occurs is different from the refractive index of the material at the position where the polymerization does not occur, so that holographic interference fringes can be formed inside the carrier polymer.
  • the thickness of the holographic material layer 200 may be 15-20 ⁇ m, such as 15 ⁇ m, 16 ⁇ m, 17 ⁇ m, 18 ⁇ m, 19 ⁇ m, 20 ⁇ m. Therefore, the holographic material layer has an appropriate thickness, and can completely record the amplitude information and phase information of the object light without affecting the overall thickness of the housing assembly.
  • the viewing angle of the holographic material layer 200 in the first direction is greater than 120 degrees
  • the viewing angle in the second direction is greater than 70 degrees
  • the first direction and the second direction are perpendicular.
  • the housing assembly has long sides and short sides.
  • the first direction may be the direction in which the short sides extend
  • the second direction may be the direction in which the long sides extend.
  • the holographic interference fringes in the holographic material layer 200 may be formed by digital laser holographic exposure.
  • the viewing angle of the holographic material layer in the first direction can be greater than 120 degrees, and the viewing angle in the second direction can be greater than 70 degrees, which improves the viewability of the image, and the digital laser holographic exposure can achieve color exposure, thereby making decoration
  • the diaphragm can present a three-dimensional color image.
  • the material constituting the transparent substrate 100 may include polyethylene terephthalate (PET), polycarbonate (PC) , Polyvinyl chloride (PVC), polypropylene (PP), thermoplastic polyurethane elastomer rubber (TPU), hydrogenated styrene isoprene copolymer (SEPS), hydrogenated styrene-butadiene block copolymer (SEBS) At least one of.
  • part of the transparent substrate is a hard substrate (such as PET, PC, PP), and the decorative film with the above hard substrate can be attached to the shell substrate with a small bending angle (such as less than 30 degrees).
  • the transparent substrate is a soft substrate (such as PVC, TPU, SEPS, SEBS), and the decorative film with the above soft substrate can be attached to a large bending angle (such as greater than 30 degrees, specifically, such as the bending angle 80 degrees, 100 degrees, 120 degrees) on the housing base. That is to say, the decorative film of the present disclosure can be applied to shell substrates with a small bending angle, and also suitable for shell substrates with a large bending angle, so that the shell components with various bending angles can realize three-dimensional color. Exterior.
  • the thickness of the transparent substrate is also not particularly limited, and those skilled in the art can design according to specific conditions.
  • the transparent adhesive layer 300 may be an optical adhesive layer (OCA adhesive layer).
  • the housing assembly may further include a bottom cover oil film layer 400, which is disposed on the side of the transparent substrate 100 away from the holographic material layer 200, and the housing assembly is applied After being in the electronic device, the bottom cover oil film layer 400 can shield the internal components of the electronic device, so that the electronic device presents a good appearance effect.
  • the material, color, and thickness of the bottom oil film layer are not particularly limited, and those skilled in the art can design according to specific conditions.
  • the holographic material layer is placed between the transparent substrate and the bottom oil film layer, the adhesion of the bottom cover ink layer will be poor, making the bottom cover ink layer prone to blistering or even falling off, shortening the decorative film The service life of the film and the appearance effect of the decorative film.
  • the holographic material layer is arranged between the transparent base material and the transparent glue layer, which can effectively alleviate the above-mentioned problems, so that each layer of the decorative film has strong adhesion, and the service life of the decorative film is prolonged.
  • the decorative film further includes: a color layer 600, a photosensitive adhesive transfer layer 700, and a coating layer 800, wherein the color layer 600 is disposed on the transparent substrate 100 and the bottom oil film layer 400, the photosensitive adhesive transfer layer 700 is disposed between the color layer 600 and the bottom oil film layer 400, and the coating layer 800 is disposed between the photosensitive adhesive transfer layer 700 and the bottom oil film layer 400.
  • the effects presented by the holographic material layer can be superimposed on the effects presented by the above-mentioned film layer, and the appearance effects of the decorative film can be further enriched.
  • the material and thickness of the color layer, the photosensitive adhesive transfer layer, and the coating layer are not particularly limited, and those skilled in the art can design according to specific conditions.
  • the housing base 900 may be a glass base or a plastic base.
  • the present disclosure proposes an electronic device.
  • the electronic device includes: a housing assembly 1000, a display screen, and a motherboard (not shown in the figure).
  • the housing assembly 1000 includes a back housing and a side wall connected to the back housing, The side wall and the back shell define an accommodation space, the display screen and the main board are located inside the accommodation space, the main board is arranged close to the decorative film, and the display screen and the main board are electrically connected.
  • the housing assembly of the electronic device can present a realistic three-dimensional image with a strong sense of three-dimensional depth of field, and the image can move with different viewing angles, which brings a strong visual impact to the user and greatly improves
  • the appearance expressiveness of the electronic device is improved, and the housing assembly of the electronic device has high appearance stability.
  • the housing assembly 1000 includes a back shell and a side wall connected to the back shell, and the side wall and the back shell define an accommodation space” should be understood in a broad sense, specifically:
  • the shell assembly 1000 includes a back shell and a side wall connected to the back shell, which means that the overall structural division of the shell assembly includes the back shell and the side walls, and the back shell of the shell assembly includes the shell base.
  • the corresponding flat part and the corresponding flat part of the decorative film, or the back shell of the housing assembly are corresponding to each layer structure including the housing base, the decorative film, the bottom ink layer, the color layer, and the glossy transfer layer.
  • the side wall of the housing assembly includes the side wall portion corresponding to the housing base and the side wall portion corresponding to the decorative diaphragm
  • the back shell of the housing assembly includes the housing base, the decorative diaphragm, the bottom ink layer, The color layer and the glossy cross transfer layer and the corresponding side wall parts of each layer structure.
  • the side wall and the back shell define the containing space, that is, the shell component composed of the shell substrate, the decorative film and other structures. Define the accommodation space.
  • the shell assembly 1000 includes a back shell and a side wall connected to the back shell, which means that the shell base includes the back shell and the side wall, and the decorative film is attached to one side of the back shell or is arranged on the back shell.
  • the side wall and the back shell define the accommodating space, and the decorative film is attached to one side of the housing base. Affect the settings of the display and the motherboard.
  • the electronic device may be any of various types of computer system devices that are mobile or portable and perform wireless communication.
  • the electronic device may be a mobile phone or a smart phone, a portable game device, a laptop computer, a personal digital assistant, a portable Internet device, a music player, and a data storage device, other handheld devices, such as watches, etc.
  • the electronic device can present a good three-dimensional image, and the appearance and expressiveness of the electronic device can be improved.
  • the present disclosure proposes a method of preparing a housing assembly.
  • the housing assembly prepared by the method may be the previously described housing assembly, and thus, the housing assembly prepared by the method may have the same features and advantages as the previously described housing assembly , I won’t repeat it here.
  • the method includes:
  • a holographic material layer is formed on one side of the transparent substrate.
  • forming the holographic material layer may include: first, coating the holographic material on one side of the transparent substrate, and then, holographically forming the holographic interference fringes in the holographic material to form the holographic material Floor. Therefore, a simple method can be used to form a holographic material layer with interference fringes on a transparent substrate.
  • the holographic material layer can present a three-dimensional image of the recorded object, so that the decorative film composed of the holographic material layer has a strong three-dimensional
  • the sense of depth of field, and the image can move with different viewing angles, brings strong visual impact to the user, and greatly improves the appearance and expressiveness of the housing assembly.
  • holographic materials include photosensitive compositions.
  • the hologram of the photosensitive composition holographic material has higher diffraction efficiency and resolution than the hologram of other holographic materials, which can make the decorative film present transparent and brighter and clearer images, and further improve the appearance of the shell assembly force.
  • the photosensitive composition holographic material has better boiling resistance and ultraviolet resistance than silver halide latex, which can be well matched to the application environment of electronic equipment, so that electronic equipment can present a good three-dimensional appearance effect, and at the same time make electronic The appearance of the device has high stability.
  • the photosensitive composition may include a photoinitiator, a photosensitive polymerization monomer, and a carrier polymer.
  • the photoinitiator When the photosensitive composition is holographically photographed, the photoinitiator generates free radicals under the action of the laser energy of a specific wavelength, and initiates the polymerization effect so that the small molecules or monomers in the system are combined into macromolecules or polymers, and polymerization occurs.
  • the refractive index at the position is different from the refractive index at the position where no polymerization occurs, so that holographic interference fringes can be formed inside the carrier polymer.
  • the holographic interference fringes in the holographic material layer may be formed by digital laser holographic exposure.
  • the optical holographic exposure process is as follows: the incident light emitted by the laser is divided into two coherent light waves by the beam splitter. One beam of light is reflected by a reflector and then directly projected on the holographic material by a beam expander. After the light is reflected by another reflector, the beam is expanded by another beam expander to irradiate the object, and after being reflected by the object, the light is projected on the holographic material. The two beams of light interfere with each other on the holographic material to form an interference fringe pattern.
  • the digital laser holographic exposure is different from the optical holographic exposure.
  • the digital laser holographic exposure uses a computer to store the graphics to be recorded, and then exposes each pixel by controlling the angle and direction of the parametric light of the lithographic head.
  • digital laser holographic exposure does not require holographic photography with actual objects, and virtual objects can be simulated by a computer.
  • the images presented are more extensive and rich, and digital laser holographic exposure can achieve color exposure (optical holographic exposure) Only single-color exposure is possible, and the pattern color is single), presenting a three-dimensional color image.
  • digital laser holographic exposure has the advantages of good repeatability and automatic control, and the formed holographic material layer has a larger viewing angle (the viewing angle of the holographic material layer formed by optical holographic exposure is usually 30 degrees), such as in the first direction
  • the viewing angle may be greater than 120 degrees
  • the second direction may be greater than 70 degrees.
  • the specific process parameters of digital laser holographic exposure are not particularly limited, and those skilled in the art can design according to specific conditions.
  • a transparent adhesive layer is formed on the side of the holographic material layer away from the transparent substrate to obtain a decorative film.
  • the method for forming the transparent adhesive layer is not particularly limited, and those skilled in the art can design according to specific conditions.
  • the material of the transparent adhesive layer has been described in detail above, and will not be repeated here.
  • the transparent substrate and the transparent adhesive layer can play a good protective effect on the holographic material layer and improve the stability of the appearance of the housing assembly.
  • the method may further include: forming a bottom cover oil film layer on the side of the transparent substrate away from the holographic material layer.
  • the method for forming the bottom oil film layer is not particularly limited, and those skilled in the art can design according to specific conditions.
  • the bottom cover oil film layer can be formed by inkjet printing, printing, or the like.
  • the method may further include: forming a color layer on the side of the transparent substrate away from the holographic material layer, and forming a photosensitive adhesive on the side of the color layer away from the transparent substrate.
  • a coating layer is formed on the side of the photosensitive adhesive transfer layer away from the color layer, and finally the bottom oil film layer is formed on the side of the coating layer away from the photosensitive adhesive transfer layer.
  • the cover ink layer or the color layer is arranged on the side of the transparent substrate away from the holographic material layer, which can make the film layers have strong adhesion and prolong the service life of the decorative film.
  • the transparent glue layer is attached to one side of the shell base, that is, the decorative film is attached to the shell base to obtain the shell assembly.
  • the decorative film is attached to the inner surface of the housing base, so that a three-dimensional image can be viewed from the exterior surface (ie, the outer surface) of the housing base.
  • the material of the shell base has been described in detail above, and will not be repeated here.
  • the housing assembly prepared by this method can present a realistic three-dimensional image, has a strong sense of stereo depth, and the image can move with different viewing angles, which brings strong visual impact to the user.
  • the appearance performance of the housing assembly is improved, the housing assembly also has higher appearance stability, and the method has the advantages of simple process, easy operation, and the like.
  • the shell assembly includes a glass substrate, an OCA adhesive layer, a holographic material layer, a PET substrate, and a bottom oil film layer.
  • the OCA adhesive layer is located on one side of the glass substrate, and the holographic material layer is located on the side of the OCA adhesive layer away from the glass substrate.
  • the substrate is located on the side of the holographic material layer away from the OCA glue layer, and the bottom oil film layer is located on the side of the PET substrate away from the holographic material layer.
  • the holographic material layer is formed of a photosensitive composition, and the thickness of the holographic material layer is 15 ⁇ m.
  • the housing assembly of this example is basically the same as the housing assembly of Example 1, except that the side of the PET substrate away from the holographic material layer is sequentially laminated with a color layer, a photosensitive adhesive transfer layer, a coating layer, and an undercover ink Floor.
  • the housing assembly of this example is basically the same as the housing assembly of Example 1, except that the transparent substrate is a TPU substrate. Comparative example 1
  • the housing assembly of this comparative example is basically the same as the housing assembly of Example 1, except that the holographic material layer is formed of silver halide latex.
  • the housing assembly of this comparative example is basically the same as the housing assembly of Example 1, except that the holographic material layer is located between the PET substrate and the bottom oil film layer.
  • the casing assembly of this comparative example is basically the same as the casing assembly of comparative example 1, except that the holographic material layer is located between the PET base material and the bottom oil film layer.
  • Example 1- The appearance effects of the shell components of 3 and Comparative Examples 1-3 after the above tests, and the adhesion of the ink layer of the bottom cover under the above different test conditions, the appearance effect test results are shown in Table 1, and the adhesion test results are as follows Table 2 shows.
  • Boiling test Boiling at 80°C for 30 minutes.
  • Constant temperature and humidity test temperature 65 ⁇ 1°C, humidity 91-95%RH, test time 96h.
  • Ultraviolet test the lamp power is set to 0.63W/m 2 , the sample is placed in the test box, the temperature is 60 °C, ultraviolet rays are directly exposed to the surface for 4 hours, and then condensed at 50 °C for 4 hours, this is a cycle, 6 The sample was taken out after the cycle (48h).
  • Temperature shock test low temperature -40°C ⁇ 2°C/1h, change to high temperature 75°C ⁇ 2°C/1h within 1min as a cycle, do 20 cycles (40h).
  • Salt spray test NaCl%: 5% PH value of 6.5 ⁇ 7.2, test tank temperature: 35 °C ⁇ 1 °C, test time 48h, wash with water after the experiment, and bake at 50-60 °C for 30 minutes.
  • Cosmetic resistance test first wipe the surface of the sample with the bottom ink layer with a cotton cloth, and apply NIVEA sunscreen oil (SPF30) and NIVEA hand cream samples on the above surface of the sample. Apply 2 samples of each type of cosmetic. The focus is on the edge of the sample and the position of the hole. The amount of smearing is more than other areas. Test temperature: 55 ⁇ 1°C, humidity: 93 ⁇ 2%RH, time: 24h.
  • Hundred grid test Use a blade to draw 10 ⁇ 10 small grids of 2mm ⁇ 2mm on the surface area of the bottom oil film layer.
  • the photosensitive composition holographic material has better water resistance, ultraviolet resistance, temperature shock resistance, and cosmetic erosion resistance performance than silver halide latex, so that the shell assembly can present a good three-dimensional image and improve the shell assembly.
  • the holographic material layer is arranged between the transparent substrate and the bottom cover ink layer, the holographic material layer is arranged between the transparent substrate and the transparent glue layer, making the bottom cover ink layer and transparent There is stronger adhesion between the substrates, which improves the service life and appearance effect of the decorative film.
  • Example 2 The appearance effects of the shell components of Example 2 and Example 3 under the boiling test, temperature shock test, ultraviolet light test, constant temperature and humidity test, artificial sweat test, salt spray test, and cosmetic resistance test, and the adhesion effect of the ink layer on the bottom cover Similar to example 1.

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Abstract

提供了一种壳体组件及其制备方法、电子设备。壳体组件包括：壳体基体(900)，壳体基体(900)为透明基体；装饰膜片，装饰膜片设置在壳体基体（900）的一侧，装饰膜片包括依次层叠设置的透明基材(100)、全息材料层(200)和透明胶层(300)，透明胶层(300)靠近所述壳体基体(900)设置，全息材料层(200)内部具有全息干涉条纹。

Description

壳体组件及其制备方法、电子设备
优先权信息
本公开请求2020年06月22日向中国国家知识产权局提交的、专利申请号为202010575204.3的专利申请的优先权和权益，并且通过参照将其全文并入此处。
技术领域
本公开涉及电子设备技术领域，具体地，涉及壳体组件及其制备方法、电子设备。
背景技术
目前，越来越多的电子设备(如手机)采用玻璃壳体，并在玻璃壳体的内侧贴装装饰膜片，例如，装饰膜片包括层叠设置的基材、颜色层、光敏胶转印层、镀膜层及盖底油膜层，以使玻璃壳体呈现多彩的外观。
然而，目前的壳体组件及其制备方法、电子设备仍有待改进。
发明内容
本公开是基于发明人对于以下事实和问题的发现和认识作出的：
发明人发现，目前装饰膜片的基本结构都是在基材上设置不同颜色的颜色层、不同镀膜膜系结构、不同光敏胶转印纹理的组合搭配来实现差异化，同质化比较严重，差异点在于颜色工艺或者光影效果的不同，局限性较大，成本较高，且装饰膜片的效果都是平面的，无立体感，没有比较强的视觉冲击，影响电子设备的外观效果。
此外，发明人发现，目前有通过在玻璃壳体上设置裸眼3D膜片的方案，原理是阵列透镜通过对光的折射作用，将不同的显示内容折射到空间中不同的地方，到达人眼时显示的内容被分开，人眼接收到两幅含有视差的图像，这样便产生了立体效果。然而，上述方案呈现的立体感较差，景深感有限，并且透镜阵列厚度较厚，导致膜材的厚度较厚，不利于电子设备的轻薄化，并且在将透镜阵列贴合到玻璃基板上时，还需要考虑折射率的问题，设计复杂，若在透镜阵列的一侧设置粘接层贴合到玻璃基板上，则会导致3D效果失效。
本公开旨在至少一定程度上缓解或解决上述提及问题中至少一个。
在本公开的一个方面，本公开提出了一种壳体组件。所述壳体组件包括：壳体基体，所述壳体基体为透明基体；装饰膜片，所述装饰膜片设置在所述壳体基体的一侧，所述 装饰膜片包括依次层叠设置的透明基材、全息材料层和透明胶层，所述透明胶层靠近所述壳体基体设置，所述全息材料层内部具有全息干涉条纹。
在本公开的另一方面，本公开提出了一种电子设备。所述电子设备包括：前面所述的壳体组件，所述壳体组件包括背壳以及与所述背壳相连的侧壁，所述侧壁和所述背壳限定出容纳空间；显示屏和主板，所述显示屏和所述主板位于所述容纳空间内部，所述主板靠近所述装饰膜片设置，所述显示屏和所述主板电连接。
在本公开的另一方面，本公开提出了一种制备壳体组件的方法。所述方法包括：在透明基材的一侧形成全息材料层，令所述全息材料层内部具有全息干涉条纹；在所述全息材料层远离所述透明基材的一侧形成透明胶层，以获得装饰膜片；将所述装饰膜片的所述透明胶层贴附在壳体基体的一侧，以获得所述壳体组件，所述壳体基体为透明基体。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对示例的描述中将变得明显和容易理解，其中：
图1显示了根据本公开一个示例的壳体组件的结构示意图；
图2显示了根据本公开另一个示例的壳体组件的结构示意图；
图3显示了根据本公开另一个示例的壳体组件的结构示意图；
图4显示了根据本公开一个示例的制备壳体组件的方法的流程示意图；
图5显示了根据本公开一个示例的电子设备的结构示意图。
附图标记说明：
100：透明基材；200：全息材料层；300：透明胶层；400：盖底油膜层；600：颜色层；700：光敏胶转印层；800：镀膜层；900：壳体基体；1000：壳体组件。
发明详细描述
下面详细描述本公开的示例，所述示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的示例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。
在本公开的一个方面，本公开提出了一种壳体组件。在本公开的一些示例中，参考图1，该壳体组件包括：壳体基体900和装饰膜片，壳体基体900为透明基体，装饰膜片设置在壳体基体900的一侧，装饰膜片包括依次层叠设置的透明基材100、全息材料 层200和透明胶层300，透明胶层300靠近壳体基体900设置(即全息材料层200设置在透明胶层300远离壳体基体900的一侧，透明基材100设置在全息材料层200远离透明胶层300的一侧)，全息材料层200内部具有全息干涉条纹。由此，该壳体组件可呈现逼真的三维图像，具有较强的立体景深感，并且图像可随视角的不同而移动，给用户带来较强的视觉冲击，极大的提升了壳体组件的外观表现力，并且该壳体组件具有较高的外观稳定性。
需要说明的是，全息材料层内部的全息干涉条纹可通过放大镜进行观察。
本公开的全息材料层内部具有全息干涉条纹，干涉条纹所在位置处材料的折射率与其他位置处材料的折射率不同，以使全息材料层构成衍射光栅，当白光照射全息材料层时，入射光束发生衍射，以呈现记录物体的图像，且使得人眼可观察到记录物体多个面的图像，并且随着观看视角的不同图像会发生移动，例如，记录物体为一辆汽车，用户在正视该装饰膜片时，可看到汽车的正面，在转动该装饰膜片后，可看到汽车的侧面，使得用户观看到逼真的三维彩色图像，而非物体一个面的图像，具有较强的立体景深感以及较强的视觉冲击，极大的提升了壳体组件的外观表现力。
并且，该全息材料层还具有以下优点：
(1)全息材料层可以进行多次重复曝光记录，再现时得到的图像互不影响；
(2)全息材料层记录的是干涉条纹，因此，即使全息材料层撕裂或破损后，仍可以呈现原始物体完整的三维图像；
(3)全息材料层的立体感和景深感均比前面所述的裸眼3D膜片强，且全息材料层的厚度相较于裸眼3D膜片更薄，不影响壳体组件的整体厚度，且全息材料层设置在透明基材和透明胶层之间，可简便的贴合到壳体基体上，不影响全息材料层的外观效果。
为了便于理解，下面首先对全息材料层呈现三维图像的原理进行简单说明：
本公开全息材料层中的全息干涉条纹可以是对全息材料进行全息照相形成的，在全息照相过程中，激光发出的光线被分成两束相干的光波，一束光经反射后经扩束直接投射于全息材料上，即参考光，另一束光经反射后经扩束照射到物体上，经物体反射后投射于全息材料上，即物光，参考光和物光在全息材料上相互干涉形成全息干涉条纹，构成干涉条纹图(即全息图)，干涉条纹以光学编码的形式记录了物光的振幅信息和相位信息，干涉条纹令全息材料层构成衍射光栅，从而在白光照射全息材料层时，入射光束发生衍射，使得原始的物光被再现出来，且由于干涉条纹记录了物光的相位信息，从而使得人眼可观察到记录物体的三维图像。
下面根据本公开的具体示例，对该壳体组件的各个部分进行详细说明：
根据本公开的实施例，壳体基材的具体种没有特殊要求，本领域技术人员可以根据实际需求灵活选择。在一些实施例中，壳体基体可以为玻璃基体、聚合物基体(聚合物可以为PET、PC和PMMA中的至少之一)、金属基体或陶瓷基体等。
本公开的全息材料层设置在透明基材和透明胶层之间，由此，透明基材和透明胶层可对全息材料层起到良好的保护作用，提高装饰膜片外观的稳定性。
在本公开的一些示例中，全息材料可以包括光敏组合物。光敏组合物全息材料经全息照相后形成的全息图的衍射效率大于95％，相较于其他全息材料具有更高的衍射效率(如卤化银乳胶全息图的衍射效率在40％左右)，使得装饰膜片可呈现通透明亮的图像，并且光敏组合物全息材料经全息照相后形成的全息图的分辨率在7000条/mm以上，相较于其他全息材料具有更高的分辨率(如重铬酸盐明胶全息图的最高分辨率为5000条/mm)，使得装饰膜片呈现更加清晰的图像，进一步提升壳体组件的外观表现力。
需要说明的是，“衍射效率”是指全息图衍射成像的光通量与再现照明光总通量之比。“分辨率”是指全息图中每毫米距离内干涉条纹的数量。
发明人发现，重铬酸盐明胶对温度和细菌反应敏感，且对环境的温湿度敏感，怕潮湿，图像不稳定，容易消像，且铬对人有毒，因此，重铬酸盐明胶不适用于电子设备。卤化银乳胶经全息照相后，需要在一定浓度的显影液和温度下，在特定的时间内显影，工艺复杂，制程控制难度高。而光敏组合物经全息照相后无需显影，制作过程简单。此外，发明人意外的发现，光敏组合物全息材料相较于卤化银乳胶具有更优的耐水煮性能和耐紫外线性能，可以很好的匹配电子设备的应用环境，使得电子设备可呈现良好的三维外观效果，同时使得电子设备的外观具有较高的稳定性。
在本公开的一些示例中，光敏组合物可以包括光引发剂、光敏聚合单体和载体聚合物。其中，光引发剂用于吸收一定波长的能量，产生自由基、阳离子等，从而引发光敏聚合单体聚合交联固化，载体聚合物用于承载光敏聚合单体，避免光敏聚合单体聚集在一起，在全息照相过程中，可在全息材料层中形成全息干涉条纹。关于上述各组分的具体材料不受特别限制，本领域技术人员可以根据具体情况进行设计。例如，光敏聚合单体具体可以为乙烯基单体。在对光敏组合物进行全息照相时，即对光敏组合物进行激光曝光时，光引发剂在特定波长的激光能量的作用下产生自由基，并引发聚合效应使体系内的小分子或单体被组合成大分子或聚合物，发生聚合位置处材料的折射率与未发生聚合位置处材料的折射率不同，从而可在载体聚合物内部形成全息干涉条纹。
在本公开的一些示例中，全息材料层200的厚度可以为15-20μm，如15μm、16μm、17μm、18μm、19μm、20μm。由此，全息材料层具有合适的厚度，可以完 整的记录物光的振幅信息和相位信息，同时不会影响壳体组件的整体厚度。
在本公开的一些示例中，全息材料层200在第一方向上的视角大于120度，在第二方向上的视角大于70度，第一方向和第二方向垂直。由此，在较大的视角处仍可以观看到良好的三维图像，极大的提升了图像的可观赏性。壳体组件具有长边和短边，第一方向可以是短边延伸的方向，第二方向可以是长边延伸的方向。
在本公开的一些示例中，全息材料层200中的全息干涉条纹可以是利用数码激光全息曝光形成的。由此，可以使全息材料层在第一方向上的视角大于120度，在第二方向上的视角大于70度，提升图像的可观赏性，并且数码激光全息曝光可实现彩色曝光，从而使得装饰膜片可呈现三维彩色图像。
关于透明基材的具体材料不受特别限制，例如，在本公开的一些示例中，构成透明基材100的材料可以包括聚对苯二甲酸乙二醇酯(PET)、聚碳酸酯(PC)、聚氯乙烯(PVC)、聚丙烯(PP)、热塑性聚氨酯弹性体橡胶(TPU)、氢化苯乙烯异戊二烯共聚物(SEPS)、氢化苯乙烯-丁二烯嵌段共聚物(SEBS)的至少之一。其中，部分透明基材为硬质基材(如PET、PC、PP)，具有上述硬质基材的装饰膜片可贴附到弯曲角度较小(如小于30度)的壳体基体上。部分透明基材为软质基材(如PVC、TPU、SEPS、SEBS)，具有上述软质基材的装饰膜片可贴附到弯曲角度较大(如大于30度，具体的，如弯曲角度为80度、100度、120度的壳体基体)的壳体基体上。也即是说，本公开的装饰膜片可适用于弯曲角度较小的壳体基体，也可适用于弯曲角度较大的壳体基体，使得各种弯曲角度的壳体组件均能实现三维彩色外观。关于透明基材的厚度也不受特别限制，本领域技术人员可以根据具体情况进行设计。
关于透明胶层的具体材料和厚度不受特别限制，本领域技术人员可以根据具体情况进行设计。例如，在本公开的一些示例中，透明胶层300可以为光学胶层(OCA胶层)。
在本公开的一些示例中，参考图2，该壳体组件还可以包括盖底油膜层400，盖底油膜层400设置在透明基材100远离全息材料层200的一侧，将壳体组件应用到电子设备中后，盖底油膜层400可遮蔽电子设备的内部元件，使得电子设备呈现良好的外观效果。关于盖底油膜层的材料、颜色及厚度不受特别限制，本领域技术人员可以根据具体情况进行设计。且发明人发现，若将全息材料层设置在透明基材和盖底油膜层之间，则会导致盖底油墨层的附着力较差，使得盖底油墨层容易起泡甚至脱落，缩短装饰膜片的使用寿命以及影响装饰膜片的外观效果。本公开将全息材料层设置在透明基材和透明胶层之间，可有效缓解上述问题，使得装饰膜片各膜层之间具有较强的附着力，延长装饰膜片的使用寿命。
在本公开的一些示例中，参考图3，该装饰膜片还包括：颜色层600、光敏胶转印层700和镀膜层800，其中，颜色层600设置在透明基材100和盖底油膜层400之间，光敏胶转印层700设置在颜色层600和盖底油膜层400之间，镀膜层800设置在光敏胶转印层700和盖底油膜层400之间。由此，可使全息材料层呈现的效果与上述膜层呈现的效果进行叠加，进一步丰富装饰膜片的外观效果。关于颜色层、光敏胶转印层和镀膜层的材料、厚度不受特别限制，本领域技术人员可以根据具体情况进行设计。
且发明人发现，当将全息材料层设置在透明基材和颜色层之间时，也会存在颜色层附着力较差的问题，影响装饰膜片的使用寿命及外观效果。因此，当装饰膜片包括颜色层、光敏胶转印层、镀膜层等膜层时，仍将全息材料层设置在透明基材和透明胶层之间，以有效缓解上述问题，使得装饰膜片各膜层之间具有较强的附着力，延长装饰膜片的使用寿命。
关于壳体基体的具体材料不受特别限制，本领域技术人员可以根据具体情况进行设计。例如，在本公开的一些示例中，壳体基体900可以为玻璃基体或者塑胶基体。
在本公开的另一方面，本公开提出了一种电子设备。在本公开的一些示例中，参考图5，该电子设备包括：壳体组件1000、显示屏和主板(图中未示出)，壳体组件1000包括背壳以及与背壳相连的侧壁，侧壁和背壳限定出容纳空间，显示屏和主板位于上述容纳空间内部，主板靠近装饰膜片设置，显示屏和主板电连接。由此，该电子设备的壳体组件可呈现逼真的三维图像，具有较强的立体景深感，并且图像可随视角的不同而移动，给用户带来较强的视觉冲击，极大的提升了电子设备的外观表现力，并且该电子设备的壳体组件具有较高的外观稳定性。
需要说明的是，上述“壳体组件1000包括背壳以及与背壳相连的侧壁，侧壁和背壳限定出容纳空间”应作广义理解，具体的：
在一种情况下，壳体组件1000包括背壳以及与背壳相连的侧壁，是指壳体组件这一整体结构划分包括背壳和侧壁，壳体组件的背壳是包括壳体基体对应的平面部分以及装饰膜片对应的平面部分，或者壳体组件的背壳是包括壳体基体、装饰膜片、盖底油墨层、颜色层以及光面交转印层等各层结构对应的平面部分；壳体组件的侧壁包括壳体基体对应的侧壁部分和装饰膜片对应的侧壁部分，或者壳体组件的背壳是包括壳体基体、装饰膜片、盖底油墨层、颜色层以及光面交转印层等各层结构对应的侧壁部分，如此，侧壁和背壳限定出容纳空间，即是指壳体基材、装饰膜片等结构共同组成的壳体组件限定出容纳空间。
在另一种情况下，壳体组件1000包括背壳以及与背壳相连的侧壁，是指壳体基体 包括背壳和侧壁，装饰膜片贴合设置在背壳的一侧或设置在背壳和侧壁的一侧，如此，侧壁和背壳限定出容纳空间，装饰膜片贴合在壳体基体的一侧，即是说装饰膜片设置在容纳空间内，而且也不会影响显示屏和主板的设置。
在本公开的一些示例中，该电子设备可以为移动或便携式并执行无线通信的各种类型的计算机系统设备中的任何一种。具体的，电子设备可以为移动电话或智能电话、便携式游戏设备、膝上型电脑、个人数字助理、便携式互联网设备、音乐播放器以及数据存储设备，其他手持设备以及诸如手表等。由此，可以使上述电子设备呈现良好的三维图像，提升上述电子设备的外观表现力。
在本公开的另一方面，本公开提出了一种制备壳体组件的方法。在本公开的一些示例中，由该方法制备的壳体组件可以为前面描述的壳体组件，由此，由该方法制备的壳体组件可以具有与前面描述的壳体组件相同的特征和优点，在此不再赘述。
在本公开的一些示例中，参考图4，该方法包括：
S100：在透明基材的一侧形成全息材料层
在该步骤中，在透明基材的一侧形成全息材料层。在本公开的一些示例中，形成全息材料层可以包括：首先，在透明基材的一侧涂布全息材料，然后，对全息材料进行全息照相在全息材料中形成全息干涉条纹，以形成全息材料层。由此，利用简单的方法即可在透明基材上形成具有干涉条纹的全息材料层，该全息材料层可呈现记录物体的三维图像，使得由全息材料层构成的装饰膜片具有较强的立体景深感，并且图像可随视角的不同而移动，给用户带来较强的视觉冲击，极大的提升壳体组件的外观表现力。
关于透明基材的材料、全息材料层的材料及厚度，前面已经进行了详细描述，在此不再赘述。例如，全息材料包括光敏组合物。光敏组合物全息材料的全息图相较于其他全息材料的全息图具有更高的衍射效率和分辨率，可以使装饰膜片呈现通透明亮及更加清晰的图像，进一步提升壳体组件的外观表现力。此外，光敏组合物全息材料相较于卤化银乳胶具有更优的耐水煮性能和耐紫外线性能，可以很好的匹配电子设备的应用环境，使得电子设备可呈现良好的三维外观效果，同时使得电子设备的外观具有较高的稳定性。
在本公开的一些示例中，光敏组合物可以包括光引发剂、光敏聚合单体和载体聚合物。在对光敏组合物进行全息照相时，光引发剂在特定波长的激光能量的作用下产生自由基，并引发聚合效应使体系内的小分子或单体被组合成大分子或聚合物，发生聚合位置处的折射率与未发生聚合位置处的折射率不同，从而可在载体聚合物内部形成全息干涉条纹。
在本公开的一些示例中，全息材料层中的全息干涉条纹可以是通过数码激光全息曝光形成的。光学全息曝光的过程如下：激光发出的入射光被分束镜分成两束相干的光波，一束光经一个反射镜反射后，经一个扩束镜扩束直接投射于全息材料上，另一束光经另一个反射镜反射后，经另一个扩束镜扩束照射到物体上，经物体反射后投射于全息材料上，两束光在全息材料上相互干涉形成干涉条纹图。而数码激光全息曝光不同于光学全息曝光，数码激光全息曝光利用计算机存储需要记录的图形，然后通过控制光刻头参物光的夹角和方向对每个像素点进行曝光。相较于光学全息曝光，数码激光全息曝光不需要用实际物体进行全息照相，并且可以通过计算机模拟虚拟的物体，呈现的图像更加广泛和丰富，并且数码激光全息曝光可实现彩色曝光(光学全息曝光只能单色曝光，图案颜色单一)，呈现三维彩色图像。此外，数码激光全息曝光具有重复性好、可自动控制的优点，且形成的全息材料层具有较大的视角(光学全息曝光形成的全息材料层的视角通常为30度)，如第一方向上视角可大于120度，第二方向上可大于70度。关于数码激光全息曝光的具体工艺参数不受特别限制，本领域技术人员可以根据具体情况进行设计。
S200：在全息材料层远离透明基材的一侧形成透明胶层，以获得装饰膜片
在该步骤中，在全息材料层远离透明基材的一侧形成透明胶层，以获得装饰膜片。关于透明胶层的形成方法不受特别限制，本领域技术人员可以根据具体情况进行设计。关于透明胶层的材料前面已经进行了详细描述，在此不再赘述。
本公开通过将全息材料层设置在透明基材和透明胶层之间，透明基材和透明胶层可对全息材料层起到良好的保护作用，提升壳体组件外观的稳定性。
在本公开的一些示例中，该方法还可以包括：在透明基材远离全息材料层的一侧形成盖底油膜层。关于盖底油膜层的形成方法不受特别限制，本领域技术人员可以根据具体情况进行设计。例如，可以通过喷墨打印、印刷等方式形成盖底油膜层。
在本公开的一些示例中，在形成盖底油膜层之前，该方法还可以包括：在透明基材远离全息材料层的一侧形成颜色层，在颜色层远离透明基材的一侧形成光敏胶转印层，在光敏胶转印层远离颜色层的一侧形成镀膜层，最后在镀膜层远离光敏胶转印层的一侧形成上述盖底油膜层。由此，可使全息材料层呈现的效果与上述膜层呈现的效果进行叠加，进一步丰富装饰膜片的外观效果。关于颜色层、光敏胶转印层和镀膜层的形成方法不受特别限制，本领域技术人员可以根据具体情况进行设计。
本公开将盖底油墨层或者颜色层等设置在透明基材远离全息材料层的一侧，可使得各膜层之间具有较强的附着力，延长装饰膜片的使用寿命。
S300：将透明胶层贴附在壳体基体的一侧，以获得壳体组件
在该步骤中，将透明胶层贴附在壳体基体的一侧，即将装饰膜片贴附在壳体基体上，以获得壳体组件。本领域技术人员能够理解的是，装饰膜片贴附在壳体基体的内表面上，从而可从壳体基体的外观面(即外表面)侧观看到三维图像。关于壳体基体的材料前面已经进行了详细描述，在此不再赘述。
综上，由该方法制备的壳体组件可呈现逼真的三维图像，具有较强的立体景深感，并且图像可随视角的不同而移动，给用户带来较强的视觉冲击，极大的提升了壳体组件的外观表现力，该壳体组件还具有较高的外观稳定性，并且该方法具有工艺简单，便于操作等优点。
下面通过具体的实施例对本公开的方案进行说明，需要说明的是，下面的实施例仅用于说明本公开，而不应视为限定本公开的范围。实施例中未注明具体技术或条件的，按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者，均为可以通过市购获得的常规产品。
示例1
该壳体组件包括玻璃基体、OCA胶层、全息材料层、PET基材和盖底油膜层，OCA胶层位于玻璃基体的一侧，全息材料层位于OCA胶层远离玻璃基体的一侧，PET基材位于全息材料层远离OCA胶层的一侧，盖底油膜层位于PET基材远离全息材料层的一侧。
全息材料层由光敏组合物形成，全息材料层的厚度为15μm。
示例2
本示例的壳体组件与示例1的壳体组件基本相同，所不同的是，PET基材远离全息材料层的一侧依次层叠设置有颜色层、光敏胶转印层、镀膜层和盖底油墨层。
示例3
本示例的壳体组件与示例1的壳体组件基本相同，所不同的是，透明基材为TPU基材。对比例1
本对比例的壳体组件与示例1的壳体组件基本相同，所不同的是，全息材料层由卤化银乳胶形成。
对比例2
本对比例的壳体组件与示例1的壳体组件基本相同，所不同的是，全息材料层位于PET基材和盖底油膜层之间。
对比例3
本对比例的壳体组件与对比例1的壳体组件基本相同，所不同的是，全息材料层位于PET基材和盖底油膜层之间。
性能测试
分别对示例1-3和对比例1-3的壳体组件进行水煮测试、温度冲击测试、紫外光测试、恒温恒湿测试、人工汗水测试、盐雾测试及耐化妆品测试，观察示例1-3和对比例1-3的壳体组件经上述测试后的外观效果，以及测试盖底油墨层在上述不同测试条件下的附着力，外观效果测试结果如表1所示，附着力测试结果如表2所示。
上述各种测试的条件如下：
水煮测试：80℃水煮30min。
恒温恒湿测试：温度65±1℃，湿度91-95％RH，测试时间96h。
紫外线测试：灯管功率设置为0.63W/m 2，将样品摆放入试验箱中，在温度为60℃，紫外线直射外观表面4h，然后在50℃下冷凝4h，此为一个循环，6个循环(48h)后将样品取出。
温度冲击测试：低温-40℃±2℃/1h，在1min内转到高温75℃±2℃/1h为一个循环，做20个循环(40h)。
人工汗水测试：按《人工汗水配置指导书》配置溶液，PH＝4.6±0.1，浸泡溶液的无尘布贴在样品设置有盖底油墨层的表面并用密封胶袋封好，在恒温恒湿箱储存48h(温度：55±1℃，湿度：93±2％RH)。
盐雾测试：NaCl％：5％PH值6.5～7.2，试验槽温度：35℃±1℃，测试时间48h，实验后用清水清洗，50-60℃烘烤30min。
耐化妆品测试：先用棉布将样品具有盖底油墨层的表面擦干净，将NIVEA防晒油(SPF30)、NIVEA护手霜试样涂在样品上述表面上，每种化妆品涂2个样品，涂抹时重点在样品边沿及孔位置，涂抹量多于其它区域，测试温度：55±1℃，湿度：93±2％RH，时间：24h。
上述测试完成后，分别在常温(如25℃)下恢复2h，然后观察各样品的外观效果。
对样品进行水煮测试后，在常温下恢复2h，继续对样品进行百格测试。
百格测试：用刀片在盖底油膜层表面区域划10×10个2mm×2mm小格，用3M610胶纸贴在划格区域，把气泡挤出，静压5秒钟以上，样品保持不动，胶带单边以90°角迅速拉起，重复3次。
表1
Figure PCTCN2021095494-appb-000001
表2
Figure PCTCN2021095494-appb-000002
由表1可知，光敏组合物全息材料相较于卤化银乳胶具有更优的耐水、耐紫外线、耐温度冲击、耐化妆品侵蚀等性能，使得壳体组件可呈现良好的三维图像，提升壳体组件的外观表现力及稳定性。
由表2可知，相较于全息材料层设置在透明基材和盖底油墨层之间的结构，全息材料层设置在透明基材和透明胶层之间的结构，使得盖底油墨层与透明基材之间具有更强的附着力，提升装饰膜片的使用寿命及外观效果。
示例2和示例3的壳体组件在水煮测试、温度冲击测试、紫外光测试、恒温恒湿测试、人工汗水测试、盐雾测试及耐化妆品测试下的外观效果及盖底油墨层的附着效果与示例1相似。
在本公开的描述中，术语“上”、“下”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开而不是要求本公开必须以特定的方位构造和操作，因此不能理解为对本公开的限制。
在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同示例以及不同示例的特征进行结合和组合。另外，需要说明的是，本说明书中，术语“第一”、“第二”仅用于描述目的，为了直观的区分两个方向，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (20)

  1. 一种壳体组件，其特征在于，包括：
    壳体基体，所述壳体基体为透明基体；
    装饰膜片，所述装饰膜片设置在所述壳体基体的一侧，所述装饰膜片包括依次层叠设置的透明基材、全息材料层和透明胶层，所述透明胶层靠近所述壳体基体设置，所述全息材料层内部具有全息干涉条纹。
  2. 根据权利要求1所述的壳体组件，其特征在于，所述全息干涉条纹是通过对全息材料进行全息照相形成的。
  3. 根据权利要求2所述的壳体组件，其特征在于，所述全息材料包括光敏组合物。
  4. 根据权利要求3所述的壳体组件，其特征在于，所述光敏组合物包括光引发剂、光敏聚合单体和载体聚合物。
  5. 根据权利要求3或4所述的壳体组件，其特征在于，所述全息材料经全息照相后形成的全息图的分辨率在7000条/mm以上。
  6. 根据权利要求2所述的壳体组件，其特征在于，所述全息材料层的厚度为15-20μm。
  7. 根据权利要求1所述的壳体组件，其特征在于，所述全息材料层在第一方向上的视角大于120度，在第二方向上的视角大于70度，所述第一方向与所述第二方向垂直。
  8. 根据权利要求1所述的壳体组件，其特征在于，进一步包括：
    盖底油墨层，所述盖底油墨层设置在所述透明基材远离所述全息材料层的一侧。
  9. 根据权利要求8所述的壳体组件，其特征在于，进一步包括：
    颜色层，所述颜色层设置在所述透明基材和所述盖底油墨层之间；
    光敏胶转印层，所述光敏胶转印层设置在所述颜色层和所述盖底油墨层之间；
    镀膜层，所述镀膜层设置在所述光敏胶转印层和所述盖底油墨层之间。
  10. 根据权利要求1所述的壳体组件，其特征在于，构成所述透明基材的材料包括聚对苯二甲酸乙二醇酯、聚碳酸酯、聚氯乙烯、聚丙烯、热塑性聚氨酯弹性体橡胶、氢化苯乙烯异戊二烯共聚物、氢化苯乙烯-丁二烯嵌段共聚物的至少之一。
  11. 一种电子设备，其特征在于，包括：
    权利要求1-10任一项所述的壳体组件，所述壳体组件包括背壳以及与所述背壳相连的侧壁，所述侧壁和所述背壳限定出容纳空间；
    显示屏和主板，所述显示屏和所述主板位于所述容纳空间内部，所述主板靠近所述装饰膜片设置，所述显示屏和所述主板电连接。
  12. 一种制备壳体组件的方法，其特征在于，包括：
    在透明基材的一侧形成全息材料层，令所述全息材料层内部具有全息干涉条纹；
    在所述全息材料层远离所述透明基材的一侧形成透明胶层，以获得装饰膜片；
    将所述装饰膜片的所述透明胶层贴附在壳体基体的一侧，以获得所述壳体组件，所述壳体基体为透明基体。
  13. 根据权利要求12所述的方法，其特征在于，形成所述全息材料层包括：
    在所述透明基材的一侧涂布全息材料，并对所述全息材料进行全息照相形成所述全息干涉条纹。
  14. 根据权利要求13所述的方法，其特征在于，所述全息干涉条纹是利用数码激光全息曝光形成的。
  15. 根据权利要求13所述的方法，其特征在于，所述全息材料包括光敏组合物。
  16. 根据权利要求15所述的方法，其特征在于，所述光敏组合物包括光引发剂、光敏聚合单体和载体聚合物。
  17. 根据权利要求15或16所述的方法，其特征在于，所述全息材料层在第一方向上的视角大于120度，在第二方向上的视角大于70度，所述第一方向与所述第二方向垂直。
  18. 根据权利要求12或13所述的方法，其特征在于，还包括：
    在所述透明基材远离所述全息材料层的一侧形成盖底油膜层。
  19. 根据权利要求12或13所述的方法，其特征在于，还包括：
    在所述透明基材远离所述全息材料层的一侧形成颜色层；
    在所述颜色层远离所述透明基材的一侧形成光敏胶转印层；以及
    在所述光敏胶转印层远离所述颜色层的一侧形成镀膜层；
    其中，所述盖底油膜层形成在所述镀膜层远离所述光敏胶转印层的一侧。
  20. 根据权利要求12所述的方法，其特征在于，所述全息材料层的厚度为15-20μm。
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