CN115866110A - Mobile terminal's backshell and mobile terminal - Google Patents

Abstract

The present disclosure provides a rear case of a mobile terminal and the mobile terminal. The rear case includes a transparent substrate and at least one set of decoration units. The transparent substrate includes an inner surface and an outer surface that are oppositely disposed in a thickness direction. At least a set of decoration unit bonding is fixed in the internal surface, the decoration unit includes the texture layer and the light reflection stratum of range upon range of setting, under the reflection of light reflection stratum, the texture of texture layer is reflected to the surface. In this scheme, the light reflection layer among the decoration unit can reflect the texture on texture layer to transparent substrate's surface, can improve the pleasing to the eye degree of backshell from this, promotes user's visual experience.

Description

Mobile terminal's backshell and mobile terminal

Technical Field

The present disclosure relates to the technical field of electronic devices, and in particular, to a rear case of a mobile terminal and a mobile terminal.

Background

With the update iteration of mobile terminals (e.g., mobile phones and tablet computers), users have higher and higher requirements for the appearance quality of the mobile terminals, and for this reason, various mobile terminal manufacturers are pursuing differentiated design schemes, so as to bring better visual experience to the users.

Disclosure of Invention

The utility model provides a rear shell and mobile terminal of modified mobile terminal to improve rear shell and mobile terminal's pleasing to the eye degree, promote user's visual experience.

The present disclosure provides a rear case of a mobile terminal, including:

a transparent substrate including an inner surface and an outer surface oppositely disposed in a thickness direction;

the decorative unit comprises a texture layer and a light reflecting layer which are arranged in a stacked mode, and the texture of the texture layer is reflected to the outer surface under the reflection effect of the light reflecting layer.

Optionally, the textured layer is closer to the inner surface than the light reflecting layer.

Optionally, the decorative unit further includes a film layer disposed on a side of the texture layer facing away from the light reflection layer, and the texture layer is attached to a surface of the film layer facing away from the inner surface.

Optionally, the film layer is made of polyethylene terephthalate material.

Optionally, the rear shell further includes a color layer, and the color layer is disposed on a side surface of the light reflection layer opposite to the texture layer.

Optionally, the color layer is an ink layer.

Optionally, the decoration unit includes a first decoration unit, and the texture of the texture layer of the first decoration unit is a pile texture.

Optionally, the decorative unit further includes a second decorative unit, and the texture of the texture layer of the second decorative unit is at least one of lines, letters, numbers, characters and images; and/or

The first decoration unit is provided with a plurality of groups, the first decoration units of the plurality of groups are arranged on the same side of the inner surface and are sequentially arranged along the thickness direction of the transparent substrate, and the adjacent two first decoration units are fixedly bonded with each other.

Optionally, the rear shell further includes an optical adhesive layer, and the decoration unit is adhered to the inner surface through the optical adhesive layer.

Optionally, the texture layer is formed by transferring through a laser engraving mold, and the transparent substrate is made of one of glass, sapphire, transparent polymer and transparent composite material.

Optionally, the thickness of the texture layer ranges from 0.008mm to 0.05mm, and the thickness of the transparent substrate ranges from 0.1mm to 5mm.

Optionally, the surface sets up to the frosting, the Ra range value of the roughness of surface is 1.5um ~ 5.5um.

Optionally, the frosting surface is a concave-convex surface, and under an enlarged state, the protrusions on the concave-convex surface are of a tetrahedral or hexahedral structure, and the cross sections of the protrusions on the concave-convex surface are of a triangular structure or a pyramidal structure.

Optionally, the frosting surface is a concave-convex surface, and under an enlarged state, the cross section of the groove on the concave-convex surface is in a triangular structure or a pyramid structure.

Optionally, the rear shell further comprises a hydrophobic and oleophobic layer, and the hydrophobic and oleophobic layer is arranged on the outer surface.

The present disclosure also provides a mobile terminal, including:

a terminal main body;

the display screen is assembled at the front end of the terminal main body; and

the rear housing as claimed in any one of the above claims, assembled to a rear end of the terminal body.

The technical scheme provided by the disclosure can at least achieve the following beneficial effects:

the utility model provides a mobile terminal's backshell and mobile terminal, wherein, the backshell includes transparent substrate and decorates the unit, decorates the light reflection layer in the unit and can reflect the texture on texture layer to transparent substrate's surface, can improve the pleasing to the eye degree of backshell from this, promotes user's visual experience.

Drawings

Fig. 1 is a schematic diagram of a mobile terminal shown in an exemplary embodiment of the present disclosure;

fig. 2 is a cross-sectional view of a rear case of a mobile terminal according to an exemplary embodiment of the present disclosure;

FIG. 3 is an effect diagram of a pile texture shown in an exemplary embodiment of the present disclosure;

FIG. 4 is an effect diagram of a frosted surface shown in an exemplary embodiment of the present disclosure;

fig. 5 is an enlarged effect view of a frosted surface according to an exemplary embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Similarly, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and if only "a" or "an" is denoted individually. "plurality" or "a number" means two or more. Unless otherwise specified, "front", "back", "lower" and/or "upper", "top", "bottom", and the like are for ease of description only and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Referring to fig. 1, fig. 1 is a schematic diagram illustrating a mobile terminal 100 according to an exemplary embodiment of the disclosure.

The mobile terminal 100 provided by the present disclosure includes, but is not limited to, a mobile phone, a tablet computer, a Point of sale (POS) machine, etc., and the present disclosure takes the mobile phone as an example for detailed description.

The mobile terminal 100 includes a terminal body 10, a display 20 assembled at a front end of the terminal body 10, and a rear case 30 assembled at a rear end of the terminal body 10. By decorating the rear case 30, the appearance quality of the mobile terminal 100 can be improved, and the visual experience of the user can be improved.

Referring to fig. 2, fig. 2 is a cross-sectional view of a rear case 30 of a mobile terminal according to an exemplary embodiment.

The rear case 30 includes a transparent substrate 31 and at least one set of decoration units 32. The decoration unit 32 is assembled to the transparent substrate 31, and functions to decorate the rear case 30 and improve the appearance of the rear case 30. The material of the transparent substrate 31 is not limited. In one embodiment, the transparent substrate 31 may be made of one of glass, sapphire, transparent polymer, and transparent composite material, but is not limited thereto. In one embodiment, the transparent substrate 31 may be silicate glass, which is mainly silica and has better thermal stability, mechanical strength and hardness. In another embodiment, the transparent substrate 31 may be made of polyethylene terephthalate (PET), polycarbonate (PC), polymethyl methacrylate (PMMA), or a composite of Polycarbonate (PC) and polymethyl methacrylate (PMMA). The thickness of the transparent substrate 31 may range from 0.1mm to 5mm. For example, the thickness of the transparent substrate 31 may be 0.1mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, but is not limited thereto.

The transparent substrate 31 includes an inner surface 310 and an outer surface 312 oppositely disposed in a thickness direction, wherein the inner surface 310 is a surface facing the display screen 20, and the outer surface 312 is a surface facing away from the display screen 20. The decoration unit 32 is adhered and fixed on the inner surface 310 of the transparent substrate 31, and is used for decorating the rear shell 30, so that the beauty of the rear shell 30 is improved, and the visual experience of a user is further improved. Specifically, the decoration unit 32 includes a texture layer 320 and a light reflection layer 321 stacked, and the light reflection layer 321 can reflect light. Light rays enter from the side where the transparent substrate 31 is located, sequentially pass through the transparent substrate 31 and the texture layer 320, and irradiate the light ray reflection layer 321, the light ray reflection layer 321 reflects the light rays back, and sequentially passes through the texture layer 320 and the transparent substrate 31, and under the reflection action of the light ray reflection layer 321, the textures of the texture layer 320 are reflected to the outer surface 312, so that the texture pattern is presented on the transparent substrate 31, and the function of beautifying the rear shell 30 is achieved. The texture of texture layer 320 includes, but is not limited to, a pile texture, a text texture, a shadow texture, and the like.

In some embodiments, the texture layer 320 may include a fluff texture, which is capable of reflecting to the outer surface 312 by the reflection of the light reflection layer 321, and obtains a fluff texture effect on the appearance surface of the transparent substrate 31. In other embodiments, the texture layer 320 may include one of a text texture and a light shadow texture to obtain a text texture or a light shadow texture effect on the exterior surface of the transparent substrate 31. In other embodiments, the texture layer 320 may include at least two of a pile texture, a text texture, and a light shadow texture to enhance the appearance effect of the rear cover by the cooperation of at least two texture effects. Wherein, different texture effects can be spliced or overlapped. For example, when the texture layer 320 includes the pile texture and the text texture, the pile texture and the text texture may be arranged in a splicing manner to obtain an appearance effect of the spliced pile texture and text texture on the appearance surface of the transparent substrate 31. When the texture layer 320 includes the pile texture and the text texture, the pile texture and the text texture may be superimposed to obtain a superimposed texture effect by superimposing the pile texture and the text texture.

As can be seen from the above description, the texture of the texture layer 320 is mapped to the outer surface 312 of the transparent substrate 31 under the reflection action of the light reflection layer 321, so that the rear shell 30 can present a texture pattern, thereby improving the appearance of the mobile terminal 100 and improving the visual experience of the user.

In one embodiment, the light reflecting layer 321 is located on the lower side of the texture layer 320 in the incident direction of the light, and the texture layer 320 is closer to the inner surface than the light reflecting layer 321. Thus, when light enters from the transparent substrate 31, the light sequentially passes through the transparent substrate 31 and the texture layer 320, irradiates on the light reflection layer 321, is reflected back by the light reflection layer 321, and passes through the texture layer 320 and the transparent substrate 31 again, and in the process of light entering and reflection, the texture layer 320 is passed through by the light twice, so that the texture of the texture layer 320 can be clearly projected to the outer surface 312, and the display effect of the texture is better.

The light reflection layer 321 may be a coating layer formed by magnetron sputtering or evaporation, which has strong adhesion and prevents the coating material from falling off. The plating material may be made of a laminate of silicon oxide, niobium oxide, and silicon nitride. The textured layer 320 may be formed by laser engraving die transfer. The thickness of the texture layer 320 may be set to a range of 0.008mm to 0.05mm. For example, the thickness of the texture layer 320 may be 0.008mm, 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, but is not limited thereto.

In one embodiment, the decoration unit 32 further includes a film layer 322 disposed on a side of the texture layer 320 facing away from the light reflection layer 321, and the texture layer 320 is attached to a side surface of the film layer 322 facing away from the inner surface 310. The film layer 322 serves as a support carrier for the texture layer 320, facilitating flattening of the texture layer 320 without wrinkling or peeling. In one embodiment, the film layer 322 can be made of polyethylene terephthalate material, and the film layer 322 made of the material has smooth and glossy surface, excellent physical and mechanical properties in a wide temperature range, long-term service temperature of 120 ℃, excellent electrical insulation, good electrical properties even at high temperature and high frequency, good creep resistance, fatigue resistance, friction resistance and dimensional stability. Of course, the film layer 322 is not limited to polyethylene terephthalate.

In one embodiment, the decoration unit 32 includes a first decoration unit 32A, and the texture of the texture layer 320 of the first decoration unit 32A is configured as a nap texture. The fluff texture can present a fluff effect on the transparent substrate 31, and the rear shell 30 with the fluff effect has a texture and a spatial stereoscopic impression, and is more favored by users. Fig. 3 shows a schematic view of the pile effect.

In one embodiment, the decoration units 32 may further include a second decoration unit 32B, and the texture of the texture layer 320 of the second decoration unit 32B is at least one of lines, letters, numbers, letters and images. That is, at least two of lines, letters, numbers, letters, and images may be used in combination, or one of them may be used alone. When a plurality of lines, letters, numbers, letters, and images are used in combination, a more diversified, richer texture effect can be presented on the rear case 30.

In an alternative embodiment, the first decoration units 32A may be provided with a plurality of sets, the plurality of sets of first decoration units 32A are all disposed on the same side of the inner surface 310, and are sequentially arranged along the thickness direction of the transparent substrate 31, and two adjacent first decoration units 32A are adhered and fixed to each other. So set up, among the multiunit first decoration unit 32A, every group first decoration unit 32A all includes texture layer 320, then the texture of a plurality of texture layers 320 can superpose each other to, because a plurality of texture layers 320 are in different layers respectively, then the texture projection of each texture layer 320 is different to the light and shade degree of transparent base plate 31, makes the texture effect after the superpose more three-dimensional. In the embodiment shown in FIG. 2, the light reflecting layer 321 of the first decorative unit 32A is adjacent to and adhesively secured to the film layer 322 of the first decorative unit 32A of the other group.

In some embodiments, the second decoration unit 32B may also be provided with a plurality of groups, and the textures of the texture layers 320 of the second decoration unit 32B may also be mutually superimposed to present a richer texture effect, which is not described herein again.

In some embodiments, there may be two groups of decoration units 32, which are the first decoration unit 32A and the second decoration unit 32B, respectively, so that the texture layer 302 of the first decoration unit 32A is a villus texture, and the texture of the texture layer 320 of the second decoration unit 32B may be at least one of lines, letters, numbers, words and images, so that the villus texture can be superimposed with the lines, letters, numbers, words or images to present a multi-style texture effect.

In one embodiment, the first decorative element 32A is closer to the inner surface 310 than the second decorative element 32B, and the first decorative element 32A is adhesively secured to the second decorative element 32B. Of course, in other embodiments, the second decorative element 32B may be positioned closer to the inner surface 310 than the first decorative element 32A, and adhesively secured therebetween.

Besides, the specific number of the decoration units 32 can be set according to actual requirements. For example, the decoration unit 32 may also be a stack of a group of the first decoration units 32A and a group of the second decoration units 32B, or the decoration unit 32 may also be a stack of a group of the first decoration units 32A and a group of the second decoration units 32B, which is not described herein again. The arrangement order of the first decoration units 32A and the second decoration units 32B is not limited, for example, the first decoration units 32A may be closer to the inner surface 310, or the second decoration units 32B may be closer to the inner surface 310, or the first decoration units 32A and the second decoration units 32B may be alternately arranged.

In one embodiment, the rear cover 30 further comprises a color layer 33, and the color layer 33 is disposed on a surface of the light reflection layer 321 opposite to the texture layer 320. The color layer 33 can be used as a substrate, and can increase colors for the transparent substrate 31 to present an overall color effect, so that the color of the rear shell 30 is richer, the attractiveness of the rear shell 30 is further improved, and the texture layer 320 can be protected.

In an alternative embodiment, the color layer 33 may be provided as an ink layer, for example, the ink may be coated on the light reflection layer 321 by a screen printing method. The color of the ink layer is not limited, and may be orange, pink, blue, or the like, for example, and the configuration may be specifically selected according to actual needs. In this embodiment, the color layer 33 is disposed on a side of the second decoration unit 32B opposite to the inner surface 310, and is coated on the light reflection layer 321 of the second decoration unit 32B and farthest from the inner surface 310.

In one embodiment, the rear case 30 further includes an optical cement layer 34, and the decoration unit 32 is adhered to the inner surface 310 through the optical cement layer 34. The optical adhesive layer 34 is colorless and transparent, has a light transmittance of over 90 percent, has good bonding strength, can be cured at room temperature or at intermediate temperature, has the characteristics of small curing shrinkage and the like, and is used for bonding transparent optical elements. The optical adhesive layer 34 may be provided in plurality. For example, the plurality of sets of first decoration units 32A and the plurality of sets of second decoration units 32B may be adhesively fixed by the optical adhesive layer 34. In this embodiment, the first decoration unit 32A and the second decoration unit 32B are fixed by bonding with the optical adhesive layer 34.

With continued reference to fig. 2, in one embodiment, the outer surface 312 is configured as a frosted surface, and the roughness Ra of the outer surface 312 ranges from 1.5um to 5.5um. The frosted surface can improve the texture of the rear shell 30, and in addition, the frosted surface can increase the roughness of the outer surface 312, so that the friction force can be increased, and a user is not easy to slip off in the use process. The Ra of the roughness of the outer surface 312 may be 1.5um, 2um, 2.5um, 3um, 3.5um, 4um, 4.5um, 5um, 5.5um, but is not limited thereto. FIG. 4 shows the effect of the frosting.

Referring to fig. 5, fig. 5 is an enlarged view of the frosted surface.

In one embodiment, the frosted surface is a concave-convex surface, and in an enlarged state, for example, enlarged by 500 times, the protrusions on the concave-convex surface have a tetrahedral or hexahedral structure, and the cross section of the protrusions on the concave-convex surface has a triangular structure or a pyramidal structure. So set up, the frosted surface can increase the light plane of reflection, demonstrates the glittering effect of diamond. When the cross section of the bulge is triangular, the top of the bulge can be in a pointed structure, and when the cross section of the bulge is in a pyramid structure, the top of the bulge can be in a plane structure. The term "cross-section" as used herein refers to a plane taken perpendicular to the display screen 20.

In one embodiment, the cross section of the groove on the concave-convex surface is in a triangular structure or a pyramid structure in an enlarged state, for example, enlarged by 500 times. The grooves are recessed into the transparent substrate 31 from the outer surface 312, are made by chemical etching, are randomly arranged, and have a triangular or pyramidal cross-section. Thus, the light reflection surface can be increased to exhibit a diamond-like glittering effect. When the cross section of the groove is triangular, the bottom of the groove can be in a sharp-angled structure, and when the cross section of the groove is in a pyramidal structure, the bottom of the groove can be in a planar structure.

Referring again to fig. 2, in one embodiment, the rear housing 30 further includes a hydrophobic oleophobic layer 35, and the hydrophobic oleophobic layer 35 is disposed on the outer surface 312. The hydrophobic oil-repellent layer 35 can reduce or even prevent water-based and oil-based substances from remaining on the outer surface 312, and fingerprint residues are avoided. The hydrophobic oil-repellent layer 35 may be made of nano-Silica (SiO) ₂ ) A spraying process is adopted to form a coating on the surface of the screen, and the screen has good light transmission and good water and oil repellency. The hydrophobic oleophobic layer 35 can also be referred to as an AF (Anti-fingerprint) layer.

The rear shell 30 of the mobile terminal provided by the disclosure can be applied to rear shells of mobile terminals such as mobile phones and tablet computers, the rear shell 30 can present fluff textures or flash effects, and different colors can be added through the color layer 33, so that the rear shell 30 has appearance effects such as fluff powder and flash blue, and the attractiveness and appearance quality of the mobile terminal are improved. In addition, the hydrophobic oil-repellent layer 35 can reduce the fingerprint residue on the rear shell 30, and keep the rear shell 30 clean and tidy during use.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (16)

1. A rear case of a mobile terminal, comprising:

a transparent substrate including an inner surface and an outer surface oppositely disposed in a thickness direction;

the decorative units are fixedly bonded on the inner surface and comprise texture layers and light reflecting layers which are arranged in a stacked mode, and the textures of the texture layers are reflected to the outer surface under the reflection effect of the light reflecting layers.

2. The rear cover of a mobile terminal according to claim 1, wherein the textured layer is closer to the inner surface than the light reflecting layer.

3. The rear cover of a mobile terminal according to claim 2, wherein the decoration unit further comprises a film layer disposed on a side of the texture layer facing away from the light reflection layer, the texture layer being attached to a surface of the film layer facing away from the inner surface.

4. The rear case of a mobile terminal according to claim 3, wherein the film layer is made of polyethylene terephthalate material.

5. The rear cover of a mobile terminal according to claim 1, further comprising a color layer disposed on a side surface of the light reflecting layer facing away from the texture layer.

6. The rear cover of a mobile terminal according to claim 5, wherein the color layer is an ink layer.

7. The rear case of a mobile terminal according to claim 1, wherein the decoration unit comprises a first decoration unit, and the texture of the texture layer of the first decoration unit is a nap texture.

8. The rear cover of a mobile terminal according to claim 7, wherein the decoration unit further comprises a second decoration unit, the texture of the texture layer of the second decoration unit is at least one of lines, letters, numbers, letters and images; and/or

The first decoration unit is provided with a plurality of groups, the first decoration units of the plurality of groups are arranged on the same side of the inner surface and are sequentially arranged along the thickness direction of the transparent substrate, and the adjacent two first decoration units are fixedly bonded with each other.

9. The rear case of a mobile terminal according to any of claims 1 to 8, wherein the rear case further comprises an optical glue layer, and the decoration unit is adhered to the inner surface through the optical glue layer.

10. The rear cover of a mobile terminal according to any of claims 1 to 8, wherein the texture layer is formed by laser engraving die transfer printing, and the transparent substrate is made of one of glass, sapphire, transparent polymer and transparent composite material.

11. The rear cover for a mobile terminal according to any one of claims 1 to 8, wherein the thickness of the texture layer has a value in the range of 0.008mm to 0.05mm, and the thickness of the transparent substrate has a value in the range of 0.1mm to 5mm.

12. The rear housing of a mobile terminal according to any of claims 1 to 8, wherein the outer surface is provided as a frosted surface, and the roughness of the outer surface has an Ra value in the range of 1.5um to 5.5um.

13. The rear cover of a mobile terminal according to claim 12, wherein the frosted surface is a concave-convex surface, and in an enlarged state, the protrusions on the concave-convex surface have a tetrahedral or hexahedral structure, and the cross section of the protrusions on the concave-convex surface has a triangular or pyramidal structure.

14. The rear case of a mobile terminal according to claim 12, wherein the frosted surface is a concave-convex surface, and a cross section of the groove on the concave-convex surface is triangular or pyramidal in an enlarged state.

15. The rear housing of a mobile terminal according to any of claims 1 to 8, wherein the rear housing further comprises a hydrophobic and oleophobic layer disposed on the outer surface.

16. A mobile terminal, comprising:

a terminal main body;

the display screen is assembled at the front end of the terminal main body; and

the rear case of any one of claims 1 to 15, assembled to a rear end of the terminal body.

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