WO2019129110A1

WO2019129110A1 - Mobile terminal housing and mobile terminal

Info

Publication number: WO2019129110A1
Application number: PCT/CN2018/124104
Authority: WO
Inventors: 戴小军; 韩德智; 王斯慰; 刘常志; 伍国平; 林佩玲; 聂晶晶
Original assignee: 华为技术有限公司
Priority date: 2017-12-28
Filing date: 2018-12-27
Publication date: 2019-07-04
Also published as: CN207958152U

Abstract

A mobile terminal housing and a mobile terminal. The mobile terminal housing comprises: a glass substrate (10), a ceramic coating film layer (20), a diamond-like coating film layer (30), and an anti-fingerprint (AF) coating film layer (40). The ceramic coating film layer (20) is provided on the glass substrate (10); the diamond-like coating film layer (30) is provided on the outer surface of the ceramic coating film layer (20); the AF coating film layer (40) is provided on the outer surface of the diamond-like coating film layer (30). The mobile terminal housing and the mobile terminal meet the reliability during use while meeting the condition that the housing has a ceramic-like effect.

Description

Mobile terminal housing and mobile terminal

This application claims the priority of the Chinese Utility Model Patent Application No. PCT Application No. in.

Technical field

The present application relates to the field of communications devices, and in particular, to a mobile terminal housing and a mobile terminal.

Background technique

With the rapid development of electronic products, portable mobile terminals such as mobile phones, tablets, and notebook computers have been widely used. With the trend of personalization, people have put forward higher requirements for the appearance of mobile terminals.

Mobile terminals in the prior art generally include a panel, a housing, a bezel, and the like. The frame is disposed on the casing, and the panel is disposed on the frame to enclose an enclosed space for placing electronic components. Existing housings are generally metal housings, glass housings, plastic housings, ceramic housings, and the like. Among them, the glass casing is favored by more and more manufacturers and users because of its beautiful appearance, good hand feeling, and not easy to scratch. At present, when the glass casing is used, an anti-fingerprint film is usually coated on the outer surface of the transparent glass casing to prevent pollution and fingerprint resistance.

However, the current glass backsheet mainly reflects the characteristics of the glass and cannot meet the user's demand for aesthetics.

Summary of the invention

The mobile terminal casing and the mobile terminal provided by the embodiments of the present invention satisfy the reliability of use while satisfying the user's aesthetic requirements while satisfying the ceramic-like effect of the casing.

In a first aspect, an embodiment of the present application provides a mobile terminal housing, including:

Glass substrate

a ceramic coating layer disposed on the glass substrate; the ceramic coating layer may be formed on the glass substrate by sputtering or evaporation; the glass substrate may be formed by providing a ceramic coating layer on the glass substrate The surface produces a ceramic effect, that is, visually produces a ceramic-like moist, heavy effect, which improves the aesthetics and the texture of the casing;

a diamond-like coating layer, the diamond-like coating layer is disposed on an outer surface of the ceramic coating layer; thereby increasing the wear resistance of the ceramic coating layer and preventing wear of the ceramic coating layer during use.

The anti-fingerprint AF coating layer is disposed on the outer surface of the diamond-like coating layer to prevent the user from leaving a fingerprint on the back shell when using the mobile terminal, thereby affecting the appearance.

In one possible design, the ceramic coating layer comprises a multilayer ceramic coating sub-layer of alternating layers of a low refractive index ceramic coating sublayer and a high refractive index ceramic coating sublayer.

The low refractive index coating sub-layer and the high refractive index coating sub-layer are alternately arranged, so that the housing can display ceramic effects of different colors.

In a possible design, the ceramic coating layer comprises a first ceramic coating sub-layer and a second ceramic coating sub-layer which are alternately laminated, the first ceramic coating sub-layer having a refractive index smaller than the second ceramic The refractive index of the coated sublayer.

By setting up ceramic coating sub-layers of two materials, it is convenient for large-scale rapid production and can speed up the production cycle.

In one possible design, the first ceramic coating sub-layer is disposed on the glass substrate to ensure a refractive effect.

In a possible design, the first ceramic coating sub-layer is a silicon dioxide coating layer, and the second ceramic coating sub-layer is a titanium oxide coating layer.

In a possible design, the first ceramic coating sub-layer is a silicon dioxide coating layer, and the second ceramic coating sub-layer is a silicon nitride coating layer.

The above-mentioned silicon oxide-titanium oxide coating system and the silicon oxide-silicon nitride coating system have high stability, are easy to prepare, and are easy to mass-produce.

In one possible design, the thickness of the first ceramic coated sub-layer adjacent to the glass substrate is less than the thickness of the first ceramic coated sub-layer away from the glass substrate;

The thickness of the second ceramic coated sub-layer adjacent to the glass substrate is less than the thickness of the second ceramic coated sub-layer away from the glass substrate.

It can ensure better refraction effect, adhesion effect and ceramic-like moisturization, and increase ceramic texture.

In one possible design, the number of the first ceramic coated sub-layers is two;

The number of the second ceramic coated sublayers is two.

In a possible design, the L value in the corresponding color model of the housing ranges from 1.5 to 3.5;

The value of A in the color model ranges from -1.0 to +1.0;

The B value in the color model ranges from -3.5 to +1.0.

In one possible design, the color of the housing is ceramic black or ceramic gray blue.

In one possible design, the low refractive index ceramic coated sublayer and the high refractive index ceramic coated sublayer have a thickness of nanometer thickness.

In one possible design, it also includes:

a first adhesion transition layer and a second adhesion transition layer;

The first adhesion transition layer is located between the ceramic coating layer and the diamond-like coating layer;

The second adhesion transition layer is located between the diamond-like coating layer and the AF coating layer.

In one possible design, the first adhesion transition layer and the second adhesion transition layer are both silicon dioxide coating layers.

Since the material of the silica coating layer is similar to that of the glass substrate, it can be better attached to the glass substrate. Therefore, the silica coating layer can be used as an adhesion transition layer to increase the diamond-like coating layer and the AF coating layer. Adhesion.

In one possible design, the first adhesion transition layer and the second adhesion transition layer have the same thickness and are nanometer thickness.

In one possible design, the diamond-like coating layer has the same thickness as the first adhesion transition layer.

In one possible design, the ceramic coating layer is disposed on an outer surface of the glass substrate that is exposed to the outside.

In one possible design, the glass substrate is 2.5D glass, the central portion of the 2.5D glass is flat, and the sides are curved.

In the prior art coating, due to the difference in thickness between the middle portion and the edge of the 2.5D glass, the appearance effect at the edge position is visually different from the intermediate plane region, and the appearance effect cannot satisfy the consistency requirement. However, the mobile terminal housing provided by the embodiment of the present application has a thick and warm ceramic effect on the glass substrate, so that the edge position of the 2.5D glass has the same visual effect as the middle portion, and satisfies the user's aesthetics. demand.

In a second aspect, an embodiment of the present application provides a mobile terminal comprising a panel and the mobile terminal housing according to the first aspect and the various possible designs of the first aspect.

The mobile terminal housing and the mobile terminal provided by the embodiment of the present application comprise a glass substrate, a ceramic coating layer, a diamond-like coating layer and an AF coating layer. Wherein, the ceramic coating layer disposed on the glass substrate makes the shell no longer exhibits glass characteristics in appearance, but has the effect of warming and thick ceramic-like, and improves the appearance; the diamond-like coating disposed on the ceramic coating layer The layer improves the hardness of the glass substrate and prevents the wear of the ceramic coating layer; the AF coating layer disposed on the diamond-like coating layer can prevent the adhesion of fingerprints and oil stains, so that the shell maintains a smooth and bright effect for a long time, that is, The mobile terminal housing provided by the embodiment of the present application satisfies the reliability of the use while satisfying the ceramic-like effect of the housing.

DRAWINGS

1 is a schematic structural diagram 1 of a mobile terminal housing according to an embodiment of the present application;

2 is a schematic view showing the chemical structure of a diamond-like coating layer provided by an embodiment of the present application;

3 is a schematic structural view 1 of a ceramic coating layer provided by an embodiment of the present application;

4 is a schematic structural view 2 of a ceramic coating layer provided by an embodiment of the present application;

FIG. 5 is a second schematic structural diagram of a mobile terminal housing according to an embodiment of the present disclosure;

FIG. 6 is a reflection curve of a coating of a mobile terminal housing according to an embodiment of the present application;

7 is a scanning electron micrograph of a mobile terminal shell before vibration vibration test according to an embodiment of the present application;

8 is a scanning electron micrograph of a vibration and friction test of a mobile terminal housing according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.

Detailed ways

In order to solve the problem that the existing glass back sheet has a single style, the embodiment of the present application cannot meet the user's demand for aesthetics, and the surface of the glass back sheet is coated to realize the ceramic effect of multiple colors to meet the user's demand for aesthetics.

FIG. 1 is a schematic structural diagram 1 of a mobile terminal housing according to an embodiment of the present application. As shown in FIG. 1, the mobile terminal housing includes:

Glass substrate 10;

a ceramic coating layer 20, a ceramic coating layer 20 is disposed on the glass substrate 10;

a diamond-like coating layer 30, a diamond-like coating layer 30 is disposed on an outer surface of the ceramic coating layer 20;

The AF coating layer 40, the AF coating layer 40 is disposed on the outer surface of the diamond-like coating layer 30.

In this embodiment, the mobile terminal may be a mobile phone, a tablet, a laptop, or the like. The mobile terminal housing may be a backplane of the mobile terminal, ie a rear case of the mobile terminal. The base of the mobile terminal housing is a glass substrate 10, and specifically, the outer surface of the glass substrate 10 may be plated, that is, the outer surface of the glass substrate 10 exposed to the outer layer is plated.

The plating layer provided on the glass substrate 10 in this embodiment is a ceramic coating layer 20, a diamond-like coating layer 30, and an AF coating layer 40 in this order. The glass substrate 10 may be tempered glass, chemically strengthened glass, or other glass having a hardness condition satisfactory for use.

The material of the ceramic coating layer 10 may be a ceramic material such as silicon oxide, titanium oxide, silicon nitride, aluminum oxide or aluminum nitride, and a plating film may be formed on the surface of the glass substrate 10 by sputtering or vapor deposition. Other ceramic materials can be selected in this embodiment as long as the ceramic material which can form a film layer on the surface of the glass substrate can be applied to the present application.

Taking sputtering as an example, the formation manners of the silicon oxide coating layer, the titanium oxide coating layer, and the silicon nitride coating layer are exemplarily described in this embodiment, and the implementation manners of other ceramic coating layers are similar, and the embodiment is no longer used herein. Narration. Specifically, the sputtering method currently mainly employs a magnetron sputtering method.

For titanium oxide, magnetron sputtering is based on titanium (Ti) or titanium oxide (Ti0 ₂ ), and under the oxygen (0 ₂ ) atmosphere, Ti0 _{2 is} deposited on the substrate under the bombardment of ionized ions. For silica, magnetron sputtering is Si0 ₂ or Si as a target in an oxygen (0 ₂₎ atmosphere, under ion bombardment ionization will Si0 ₂ deposited onto a substrate. For silicon nitride, magnetron sputtering uses Si as a target to deposit Si ₃ N ₄ onto the substrate under a nitrogen (N ₂ ) atmosphere under the bombardment of ionized ions.

The ceramic coating layer 10 may be a coating layer formed of a ceramic material or a coating layer formed of two or more ceramic materials. For example, the ceramic coating layer 10 includes the following plating layers superposed on each other: a silicon oxide plating sublayer, a titanium oxide plating sublayer, a silicon oxide plating sublayer, and a silicon nitride plating sublayer. The order of superposition of the ceramic coating sub-layers in the ceramic coating layer is not particularly limited in this embodiment.

By providing the ceramic coating layer 10 on the glass substrate 10, the present invention can produce a ceramic effect on the surface of the glass substrate, that is, visually producing a ceramic-like moist and heavy effect, improving the appearance and the texture of the casing.

In order to increase the wear resistance of the ceramic coating layer and prevent wear of the ceramic coating layer during use, in this embodiment, a diamond-like carbon (DLC) coating layer 30 is disposed on a side of the ceramic coating layer away from the glass substrate 10.

2 is a schematic view showing the chemical structure of a diamond-like coating layer provided by an embodiment of the present application. As shown in FIG. 2, the diamond-like coating layer is an amorphous carbon film, which contains both a diamond-like SP3 hybrid bond and a graphite-like SP2 hybrid bond, and generally defines a diamond-like film with a hardness exceeding the diamond hardness of 20 % of insulating hard amorphous carbon film. Among them, diamond is a spatial three-dimensional structure, specifically a space tetrahedron; graphite is a planar network structure.

At present, there are many methods for preparing a DLC coating layer, and vacuum evaporation, sputtering, plasma-assisted chemical vapor deposition, ion implantation, and the like are common. Taking sputtering as an example, graphite is used as a target, and diamond-like and graphite are deposited on the substrate under the inert atmosphere under the bombardment of ionized ions. In addition, doping treatment or the like may be performed in the plating process, and the preparation method of the DLC coating layer is not particularly limited in this embodiment.

The diamond-like coating layer 30 prevents wear of the ceramic coating layer 20, so that the ceramic coating layer can be mass-produced on a glass substrate. Specifically, in the life, small particles such as sand and dirt may cause abrasion to the casing, thereby causing damage to the ceramic coating layer, resulting in poor touch experience, affecting aesthetics and visual effects. Due to the high hardness of the diamond-like coating layer, depositing a diamond-like coating layer on the surface of the ceramic coating layer can effectively alleviate the external wear on the ceramic coating layer. At the same time, the diamond-like coating layer can also improve the resistance of the glass substrate. Fragmentation, which can effectively protect the integrity of the casing.

In order to prevent the user from leaving a fingerprint on the rear case when using the mobile terminal, the anti-fingerprint (AF) coating layer 40 is further disposed on the surface of the diamond-like coating layer 30. The AF coating layer is generally a nano-coating layer composed of a fluorine group and a silicon group, and can be applied to the diamond-like coating layer by a vacuum evaporation coating method or a spray coating method.

The AF coating layer 40 can minimize the surface tension of the glass, and reduce the contact area between the dust and the glass surface by 90%, so that it has antifouling property: preventing fingerprints and oil stains from adhering easily, and easily erasing; scratch resistance: smooth surface The hand feels comfortable and is not easy to scratch; the film layer is thin: excellent optical properties, does not change the original texture; wear resistance: the friction coefficient is reduced, the product is more wear-resistant, so that the shell maintains a smooth and bright effect for a long time.

The mobile terminal housing provided by the embodiment of the present application includes a glass substrate, a ceramic coating layer, a diamond-like coating layer, and an AF coating layer. Wherein, the ceramic coating layer disposed on the glass substrate makes the shell no longer exhibits glass characteristics in appearance, but has the effect of warming and thick ceramic-like, and improves the appearance; the diamond-like coating disposed on the ceramic coating layer The layer improves the hardness of the glass substrate and prevents the wear of the ceramic coating layer; the AF coating layer disposed on the diamond-like coating layer can prevent the adhesion of fingerprints and oil stains, so that the shell maintains a smooth and bright effect for a long time, that is, The mobile terminal housing provided by the embodiment of the present application satisfies the reliability of the use while satisfying the ceramic-like effect of the housing.

The specific implementation process of the ceramic coating layer will be described in detail below using a specific embodiment.

FIG. 3 is a schematic structural view 1 of a ceramic coating layer provided by an embodiment of the present application. Specifically, the ceramic coating layer 20 includes a multilayer ceramic coating sublayer in which a low refractive index ceramic coating sublayer and a high refractive index ceramic coating sublayer are alternately disposed.

As shown in FIG. 3, starting from the glass substrate 10, the alternately disposed multilayer ceramic coating sublayers are a low refractive index ceramic coating sublayer 21a, a high refractive index ceramic coating sublayer 22a, and a low refractive index ceramic coating sublayer 23a. , high refractive index ceramic coated sub-layer 24a.

Further, the materials of the plurality of low refractive index ceramic coating sublayers in this embodiment may be the same or different. The material of the high refractive index ceramic coated sub-layer 22a and the high refractive index ceramic coated sub-layer 24a may be the same or different. In this embodiment, the implementation of the low refractive index ceramic coating sublayer and the high refractive index ceramic coating sublayer is not particularly limited as long as the low refractive index ceramic coating sublayer and the high refractive index ceramic coating sublayer are alternately disposed.

In the present embodiment, the low refractive index coating sublayer and the high refractive index coating sublayer are alternately disposed so that the casing can display ceramic effects of different colors. Specifically, the scattering ability of light depends on the refractive index difference of adjacent substances, and the smaller the refractive index difference, the lower the scattering amount, and the easier it is to transmit light. The present application selects a low refractive index ceramic sublayer (the refractive index of the low refractive index ceramic sublayer generally refers to 1.8 or less) and a high refractive index ceramic sublayer (the refractive index of the high refractive index ceramic sublayer generally refers to 2.0 or more) Alternate stacking settings. The refractive indices of the adjacent two ceramic layers differ greatly, so the amount of scattering is low, so that the surface of the glass substrate can form a ceramic effect with light shielding of various colors.

At the same time, the low refractive index coating sublayer and the high refractive index coating sublayer are alternately stacked, and interference of incident light occurs, thereby realizing the reflective ceramic effect of various colors.

4 is a schematic structural view 2 of a ceramic coating layer provided by an embodiment of the present application. As shown in FIG. 4, on the basis of the embodiment of FIG. 3, the ceramic coating layer 20 includes a first ceramic coating sub-layer and a second ceramic coating sub-layer which are alternately laminated, and the first ceramic coating sub-layer The refractive index is smaller than the refractive index of the second ceramic coated sub-layer.

In this embodiment, all of the low refractive index ceramic coating sublayers are the same first ceramic coating sublayers, and all of the high refractive index ceramic coating sublayers are the same second ceramic coating sublayers. That is, this embodiment is an arrangement in which two ceramic coated sub-layers are overlapped. By setting up ceramic coating sub-layers of two materials, it is convenient for large-scale rapid production and can speed up the production cycle.

In the specific implementation process, the number of layers of the first ceramic coating sub-layer and the number of layers of the second ceramic coating sub-layer are not particularly limited, and a specific number of layers may be set according to different color requirements.

In the above embodiment, as shown in FIG. 4, in order to ensure the refraction effect, the first ceramic coating sub-layer of low refractive index may be disposed on the glass substrate, and then the second ceramic coating sub-layer of high refractive index may be superposed.

In a possible implementation manner, the ceramic coating system is a silicon oxide-titanium oxide coating system, that is, the first ceramic coating sub-layer is a silicon dioxide coating layer, and the second ceramic coating sub-layer is a titanium oxide coating layer. Wherein, the refractive index of the SiO ₂ coating layer may be between 1.30 and 1.60, and the refractive index of the Ti _{2 2} coating layer may be between 2.5 and 2.8.

In another possible implementation manner, the ceramic coating system is a silicon oxide-silicon nitride coating system, that is, the first ceramic coating sublayer is a silicon dioxide coating layer, and the second ceramic coating sublayer is a silicon nitride coating layer. Wherein, the refractive index of the SiO ₂ coating layer may be between 1.30 and 1.60, and the refractive index of the Si ₃ N ₄ coating layer may be between 2.0 and 2.5.

On the basis of the above embodiments, in order to ensure a better refractive effect, an adhesion effect, and a ceramic-like moisturization, the ceramic texture is increased. In the present embodiment, the thickness of the first ceramic coating sub-layer near the glass substrate is smaller than that of the glass. The thickness of the first ceramic coating sub-layer of the substrate, that is, as the distance from the glass substrate increases, the thickness of each of the first ceramic coating sub-layers gradually increases; the thickness of the second ceramic coating sub-layer near the glass substrate is less than The thickness of the second ceramic coated sub-layer away from the glass substrate, that is, as the distance from the glass substrate increases, the thickness of each of the second ceramic coated sub-layers gradually increases.

Those skilled in the art can understand that when the first ceramic coating sub-layer is firstly plated on the surface of the glass substrate at the initial stage, since the surface material of the glass substrate is different from the ceramic material, the adhesion of the glass substrate is poor, so the first plating is performed. a thinner first ceramic coating sublayer and a thinner second ceramic coating sublayer to ensure adhesion of the first ceramic coating sublayer and the second ceramic coating sublayer, preventing the first ceramic coating sublayer and The second ceramic coated sub-layer is detached.

When a first ceramic coating sub-layer and a second ceramic coating sub-layer are completed on the glass substrate, when the ceramic coating is performed, the surface of the coating is no longer a glass substrate, and the surface of the coating is ceramic, so the adhesion is enhanced. When the thicknesses of the first ceramic coating sub-layer and the second ceramic coating sub-layer are increased, the first ceramic coating sub-layer and the second ceramic coating sub-layer are not peeled off, and the thickness is increased, and the shell is also added. The thick feeling and texture of the body enhance the aesthetics.

In the above embodiment, in order to secure the refractive effect, the thickness of the low refractive index ceramic coated sublayer and the high refractive index ceramic coated sublayer is a nanometer thickness. The low refractive index ceramic coated sublayer and the high refractive index ceramic coated sublayer may have a thickness between 1 and 100 nanometers (nm).

In addition to the above embodiments, in order to increase the adhesion of the diamond-like coating layer and the AF coating layer, in the embodiment, the housing further includes a first adhesion transition layer and a second adhesion transition layer. 5 is a schematic structural view of a mobile terminal housing according to an embodiment of the present disclosure. As shown in FIG. 5, the first adhesion transition layer 50 is located between the ceramic coating layer 20 and the diamond-like coating layer 30; and the second adhesion transition layer 60 is Located between the diamond-like coating layer 30 and the AF coating layer 40.

Wherein, the first adhesion transition layer 50 can ensure the adhesion between the diamond-like coating layer 30 and the ceramic coating layer 20, and the second adhesion transition layer 60 can ensure the attachment between the AF coating layer 40 and the diamond-like coating layer 30. Focus on.

Specifically, the first adhesion transition layer 50 and the second adhesion transition layer 60 are both silicon dioxide coating layers. It will be understood by those skilled in the art that the composition of the glass substrate mainly includes silicon dioxide. When the first adhesion transition layer 50 and the second adhesion transition layer 60 are silicon dioxide coating layers, the material of the silicon dioxide coating layer is The material of the glass substrate is similar, so that it can be better attached to the glass substrate. Therefore, the adhesion of the diamond-like coating layer 30 to the AF coating layer 40 can be increased by using the silica coating layer as an adhesion transition layer.

Further, the first adhesion transition layer 50 and the second adhesion transition layer 60 have the same thickness and are both nano-scale thickness. That is, the thickness is between 1 and 100 nm. Optionally, the diamond-like coating layer has the same thickness as the first adhesion transition layer.

Optionally, the thickness of the first adhesion transition layer and the second adhesion transition layer are both less than any ceramic coating sublayer. The thickness of the diamond-like coating layer is less than the thickness of any of the ceramic coated sub-layers. The thickness of the first adhesion transition layer 50, the second adhesion transition layer 60, and the diamond-like coating layer in this embodiment is relatively thin, and does not affect the overall effect of the color of the back shell.

In the above embodiment, the low refractive index ceramic coating sublayer and the high refractive index ceramic coating sublayer are alternately laminated, and different number of layers are designed as needed. For the LAB color model, the following color range can be achieved.

L: 1.5 to 3.5

A: -1.0 to +1.0

B: -3.5 to +1.0.

Among them, the LAB color model is based on people's perception of color. The values in LAB describe all the colors that normal vision people can see. The Lab color model consists of three elements: brightness (L) and related colors A and B.

L represents Luminosity, A represents a range from red to green, and B represents a range from yellow to blue. The value range of L is from 0 to 100, and when L=50, it is equivalent to 50% black.

The range of A and B is from +127 to -128, where +127A is red, and it gradually turns green when it transitions to -128A. On the same principle, +127B is yellow and -128B is blue. All colors are composed of these three values alternating.

A specific example is given below to illustrate the color of the housing. In the present embodiment, the number of the first ceramic coating sub-layers is two; the number of the second ceramic coating sub-layers is two as an example. Table 1 shows the relationship between the film thickness and the ceramic color.

Table I

As shown in Table 1, the first ceramic coated sub-layer in the present embodiment is silicon dioxide, and the second ceramic coated sub-layer is silicon nitride, and the finally obtained shell shows the color of ceramic black and ceramic gray blue. FIG. 6 is a reflection curve of a coating of a mobile terminal housing according to an embodiment of the present application. Wherein, the horizontal axis represents the reflection wavelength, and the vertical axis represents the reflectance corresponding to each reflection wavelength. The coating reflection curves of ceramic black and ceramic gray blue are shown in FIG.

For the mobile terminal housing provided in this embodiment, the inventor performed the performance test on the mobile terminal housing, and the test result confirmed that the mobile terminal housing provided by the embodiment of the present application satisfies the use on the basis of satisfying the ceramic visual effect. Reliability requirements.

One test of the present application is a vibration friction test. This test uses a vibration wear tester to test the outer surface of the mobile terminal housing. details as follows:

Equipment frequency: 50±0.5HZ; equipment amplitude: P1～P6 point amplitude average value 1.65±0.1mm.

Vibration time: 2 hours.

FIG. 7 is a scanning electron micrograph of the mobile terminal shell before the vibration friction test according to the embodiment of the present application, and FIG. 8 is a scanning electron micrograph of the mobile terminal shell after the vibration friction test according to the embodiment of the present application. As shown in FIGS. 7 and 8, after the vibration friction test, the outer surface of the mobile terminal housing has no color change, and the surface gloss is dull and acceptable.

Another test of this application is the steel wool test. The test method is to apply a load of 1 kgf with a special steel wool, test the head area of 2*2 cm, and rub the back and forth on the sample surface at a speed of 40 cycles/min and a stroke of about 40 mm. After 5000 tests, the water drop angle is greater than 100 degrees, meeting the needs of use.

In the above embodiment, the mobile terminal housing may only include a backboard, which may have a certain arc (3D back shell or 2D back shell), or may be a flat sheet material without curvature. Alternatively, the mobile terminal housing may also be an integrally formed housing, that is, including a back shell portion, and also includes a side frame of the mobile phone. This embodiment does not particularly limit the structure of the mobile terminal housing.

Alternatively, the specific position of the ceramic effect of the mobile terminal housing is not particularly limited, and for example, all or part of the back shell may be provided as a ceramic effect.

In one possible example, the glass substrate is 2.5D glass, wherein the middle portion of the 2.5D glass is planar, the sides are curved, and the ceramic coating layer is disposed on the outer surface of the glass substrate.

Specifically, 2.5D glass is a specially treated tempered glass which is very resistant to scratching and abrasion. The edge position of the 2.5D glass glass is rounded, and the smooth edges are more collision-proof than the right-angled edges, making it more durable and more durable.

At the same time, 2.5D glass can enhance the overall visual effect of the body and enhance the feel. Specifically, in actual use, when the one-hand grip operation, the user's hand is curved, so the 2.5D glass is used as the casing, and the curved surface shape is more ergonomic.

The application also provides a mobile terminal. The mobile terminal can be a mobile phone, a tablet, a laptop, or the like. The mobile terminal includes the mobile terminal housing described above. The mobile terminal includes a panel and the above-described mobile terminal housing, which is a rear case of the mobile terminal.

This application uses a mobile phone as an example for description. FIG. 9 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application. As shown in FIG. 9, the mobile terminal includes a panel (not shown) and a mobile terminal housing 100. The mobile terminal housing is a rear case of the mobile phone.

Specifically, the mobile terminal may include a panel, a housing, a bezel, and the like. The frame is disposed on the casing, and the panel is disposed on the frame to enclose an enclosed space for placing electronic components. Optionally, the housing and the frame are integrally formed, that is, the mobile terminal only includes the panel and the housing. The specific implementation manner of the mobile terminal in this embodiment is not particularly limited.

The mobile terminal provided by the embodiment of the present application uses a glass substrate as a casing of the mobile terminal, and a ceramic coating layer, a diamond-like coating layer, and an AF coating layer are disposed on the outer surface of the glass substrate exposed to the outside. Wherein, the ceramic coating layer disposed on the glass substrate makes the shell no longer exhibits glass characteristics in appearance, but has the effect of warming and thick ceramic-like, and improves the appearance; the diamond-like coating disposed on the ceramic coating layer The layer improves the hardness of the glass substrate and prevents the wear of the ceramic coating layer; the AF coating layer disposed on the diamond-like coating layer can prevent the adhesion of fingerprints and oil stains, so that the shell maintains a smooth and bright effect for a long time, that is, The mobile terminal housing provided by the embodiment of the present application satisfies the reliability of the use while satisfying the ceramic-like effect of the housing.

Claims

A mobile terminal housing, comprising:

Glass substrate

a ceramic coating layer, the ceramic coating layer being disposed on the glass substrate;

a diamond-like coating layer, the diamond-like coating layer is disposed on an outer surface of the ceramic coating layer;

An anti-fingerprint AF coating layer disposed on an outer surface of the diamond-like coating layer.
The housing according to claim 1, wherein the ceramic coating layer comprises a multilayer ceramic coating sub-layer in which a low-refractive-index ceramic coating sub-layer and a high-refractive-index ceramic coating sub-layer are alternately laminated.
The housing according to claim 1, wherein said ceramic coating layer comprises a first ceramic coating sub-layer and a second ceramic coating sub-layer which are alternately laminated, said first ceramic coating sub-layer having a refractive index Less than the refractive index of the second ceramic coated sub-layer.
The housing of claim 3 wherein said first ceramic coated sub-layer is disposed on said glass substrate.
The casing according to claim 3, wherein the first ceramic coating sublayer is a silica coating layer, and the second ceramic coating sublayer is a titanium oxide coating layer.
The housing according to claim 3, wherein the first ceramic coating sub-layer is a silicon dioxide coating layer, and the second ceramic coating sub-layer is a silicon nitride coating layer.
The housing according to claim 3, wherein

a thickness of the first ceramic coated sub-layer adjacent to the glass substrate is less than a thickness of the first ceramic coated sub-layer away from the glass substrate;

The thickness of the second ceramic coated sub-layer adjacent to the glass substrate is less than the thickness of the second ceramic coated sub-layer away from the glass substrate.
The housing of claim 7 wherein:

The number of the first ceramic coated sub-layers is two;

The number of the second ceramic coated sublayers is two.
The housing according to claim 3, wherein

The L value in the corresponding color model of the housing ranges from 1.5 to 3.5;

The value of A in the color model ranges from -1.0 to +1.0;

The B value in the color model ranges from -3.5 to +1.0.
The housing according to claim 9, wherein the color of the housing is ceramic black or ceramic gray blue.
The casing according to claim 2, wherein the low refractive index ceramic coated sublayer and the high refractive index ceramic coated sublayer have a thickness of a nanometer thickness.
The housing of claim 2, further comprising:

a first adhesion transition layer and a second adhesion transition layer;

The first adhesion transition layer is located between the ceramic coating layer and the diamond-like coating layer;

The second adhesion transition layer is located between the diamond-like coating layer and the AF coating layer.
The housing according to claim 12, wherein the first adhesion transition layer and the second adhesion transition layer are both silicon dioxide coating layers.
The housing according to claim 12, wherein the first adhesion transition layer and the second adhesion transition layer have the same thickness and are of a nanometer thickness.
The housing according to claim 14, wherein the diamond-like plating layer has the same thickness as the first adhesion transition layer.
The casing according to any one of claims 1 to 15, wherein the ceramic coating layer is provided on an outer surface of the glass substrate exposed to the outside.
The housing according to claim 16, wherein the glass substrate is 2.5D glass, the central portion of the 2.5D glass is flat, and the side edges are curved.
A mobile terminal characterized by comprising a panel and a mobile terminal housing according to any one of claims 1 to 17.