阅读说明：本技术 壳体的制备方法、壳体及移动终端 (Preparation method of shell, shell and mobile terminal ) 是由 王煜琨 孙坤 于 2019-09-03 设计创作，主要内容包括：本公开是关于一种壳体的制备方法、壳体及移动终端,所述方法包括：在壳体的基底上形成遮蔽保护图案层；其中,所述遮蔽保护图案层,遮蔽所述基底的第一区域,且显露所述基底的第二区域；在覆盖所述遮蔽保护图案层的所述基底之上,通过PVD方式形成至少一个第一类膜层；在形成所述至少一个第一类膜层之后,去除所述遮蔽保护图案层；在形成有所述第一类膜层的所述基底上,通过PVD方式形成至少一个第二类膜层；其中,所述至少一个第二类膜层覆盖所述第一类膜层和所述基底的第二区域。(The disclosure relates to a preparation method of a shell, the shell and a mobile terminal, wherein the method comprises the following steps: forming a shielding protection pattern layer on the substrate of the shell; the shielding protection pattern layer shields the first area of the substrate and exposes the second area of the substrate; forming at least one first film layer on the substrate covering the shielding protection pattern layer by a PVD (physical vapor deposition) mode; removing the masking protection pattern layer after forming the at least one first type of film layer; forming at least one second film layer on the substrate on which the first film layer is formed by a PVD (physical vapor deposition) mode; wherein the at least one second type of film layer covers the first type of film layer and a second area of the substrate.)

1. A method of making a housing, comprising:

forming a shielding protection pattern layer on the substrate of the shell; the shielding protection pattern layer shields the first area of the substrate and exposes the second area of the substrate;

forming at least one first film layer on the substrate covering the shielding protection pattern layer by a PVD (physical vapor deposition) mode;

removing the masking protection pattern layer after forming the at least one first type of film layer;

forming at least one second film layer on the substrate on which the first film layer is formed by a PVD (physical vapor deposition) mode; wherein the at least one second type of film layer covers the first type of film layer and a second area of the substrate.

2. The method of claim 1, wherein the forming at least one first type film layer over the substrate covering the shadow protection pattern layer by PVD comprises:

forming a plurality of first film layers in a stacked mode through a PVD mode on the basis of the shielding protection pattern layer; wherein different first film layers have different treatment effects on visible light so as to present different visual effects;

the forming of at least one second film layer on the substrate with the first film layer formed thereon by means of PVD comprises:

forming a plurality of second film layers in a stacking arrangement on the substrate with the first film layers through a PVD mode; wherein different second type film layers have different treatment effects on visible light so as to present different visual effects.

3. The method of claim 2,

the different first film layers are the same in material and different in thickness, and the first film layers which are the same in material and different in thickness have different interference treatment effects on visible light;

alternatively, the first and second electrodes may be,

the first film layers are different in material, and the first film layers made of different materials have different refractive indexes.

4. The method of claim 2,

the second film layers with different thicknesses and the same material have different interference treatment effects on visible light;

alternatively, the first and second electrodes may be,

and the second film layers made of different materials have different refractive indexes.

5. The method of claim 1, further comprising:

forming a functional layer on the substrate on which the second type film layer is formed; wherein the first type of film layer and the second type of film layer are located on the inner surface of the shell;

wherein the function of the functional layer comprises at least one of:

the light shielding device is used for shielding light rays emitted by an external light source to the functional element in the shell;

alternatively, the first and second electrodes may be,

the electromagnetic wave shielding device is used for shielding the interference of electromagnetic waves emitted to the functional element in the shell from the outside;

alternatively, the first and second electrodes may be,

for conducting heat;

alternatively, the first and second electrodes may be,

the substrate is used for coacting with the external light source and the substrate which is evaporated with the first film layer and the second film layer so as to enable the shell to present a preset color;

alternatively, the first and second electrodes may be,

for isolating the second type of film layer from the functional element.

6. The method of claim 1, further comprising:

forming a buffer layer on a substrate of the housing; the buffer layer is positioned between the first film layer and the substrate, is also positioned between the second film layer and the substrate, and is used for buffering internal stress between the first film layer and the substrate and is also used for buffering internal stress between the second film layer and the substrate;

the forming of the shielding protection pattern layer on the substrate of the housing includes:

and forming the shielding protection pattern layer on the substrate on which the buffer layer is formed.

7. The method of claim 1,

the substrate is a transparent substrate.

8. A housing, characterized in that at least a part of the area of the housing is prepared by a method according to any of claims 1 to 7, the housing comprising:

a substrate for supporting a first type of membrane layer and a second type of membrane layer;

at least one first film layer covers a first area of the substrate and exposes a second area of the substrate; the at least one first film layer is formed on a shielding protection pattern layer on the substrate in a PVD mode, the shielding protection pattern layer shields a first area of the substrate and exposes a second area of the substrate;

the second-type film layers, at least one of which covers the substrate on which the first-type film layer is formed; and at least one second film layer is formed by PVD, and covers the first film layer and the second region of the substrate.

9. A mobile terminal, characterized in that the mobile terminal comprises:

the housing of claim 8, for forming a cavity;

a functional element located within the cavity formed by the housing.

Technical Field

The disclosure relates to the technical field of mobile terminals, and in particular relates to a shell, a shell manufacturing method and a mobile terminal.

Background

As the market of mobile terminals is more competitive, it is difficult to meet the demands of consumers simply by improving the performance of hardware. In this case, the surface of the mobile terminal housing is processed to have a diversified effect, which becomes one of approaches for solving the increasing homogeneity of the mobile terminal.

At present, the surface treatment process of the shell of the mobile terminal is single, so that the visual effect and the functionality presented by the shell are relatively limited and single, and the requirements of consumers and the development of high-integration mobile phones cannot be met.

Disclosure of Invention

The disclosure provides a preparation method of a shell, the shell and a mobile terminal.

According to a first aspect of embodiments of the present disclosure, there is provided a method of manufacturing a case, including:

forming a shielding protection pattern layer on the substrate of the shell; the shielding protection pattern layer shields the first area of the substrate and exposes the second area of the substrate;

forming at least one first film layer on the substrate covering the shielding protection pattern layer by a PVD (physical vapor deposition) mode;

removing the masking protection pattern layer after forming the at least one first type of film layer;

forming at least one second film layer on the substrate on which the first film layer is formed by a PVD (physical vapor deposition) mode; wherein the at least one second type of film layer covers the first type of film layer and a second area of the substrate.

Optionally, the forming at least one first film layer by PVD on the substrate covering the mask protection pattern layer includes:

forming a plurality of first film layers in a stacked mode through a PVD mode on the basis of the shielding protection pattern layer; wherein different first film layers have different treatment effects on visible light so as to present different visual effects;

the forming of at least one second film layer on the substrate with the first film layer formed thereon by means of PVD comprises:

forming a plurality of second film layers in a stacking arrangement on the substrate with the first film layers through a PVD mode; wherein different second type film layers have different treatment effects on visible light so as to present different visual effects.

Optionally, the different first type film layers are the same in material and different in thickness, and the first type film layers of the same material and different in thickness have different interference treatment effects on visible light;

alternatively, the first and second electrodes may be,

the first film layers are different in material, and the first film layers made of different materials have different refractive indexes.

Optionally, the second film layers with different thicknesses and the same material are the same in material and different in thickness, and the second film layers with different thicknesses and the same material have different interference treatment effects on visible light;

alternatively, the first and second electrodes may be,

and the second film layers made of different materials have different refractive indexes.

Optionally, the method further comprises:

forming a functional layer on the substrate on which the second type film layer is formed; wherein the first type of film layer and the second type of film layer are located on the inner surface of the shell;

wherein the function of the functional layer comprises at least one of:

the light shielding device is used for shielding light rays emitted by an external light source to the functional element in the shell;

alternatively, the first and second electrodes may be,

the electromagnetic wave shielding device is used for shielding the interference of electromagnetic waves emitted to the functional element in the shell from the outside;

alternatively, the first and second electrodes may be,

for conducting heat;

alternatively, the first and second electrodes may be,

the substrate is used for coacting with the external light source and the substrate which is evaporated with the first film layer and the second film layer so as to enable the shell to present a preset color;

alternatively, the first and second electrodes may be,

for isolating the second type of film layer from the functional element.

Optionally, the method further comprises:

forming a buffer layer on a substrate of the housing; the buffer layer is positioned between the first film layer and the substrate, is also positioned between the second film layer and the substrate, and is used for buffering internal stress between the first film layer and the substrate and is also used for buffering internal stress between the second film layer and the substrate;

the forming of the shielding protection pattern layer on the substrate of the housing includes:

and forming the shielding protection pattern layer on the substrate on which the buffer layer is formed.

Optionally, the substrate is a transparent substrate.

According to a second aspect of the embodiments of the present disclosure, there is provided a housing, at least a partial region of which is prepared by the method provided in any one of the first aspect of the embodiments of the present disclosure, the housing comprising:

a substrate for supporting a first type of membrane layer and a second type of membrane layer;

at least one first film layer covers a first area of the substrate and exposes a second area of the substrate; the at least one first film layer is formed on a shielding protection pattern layer on the substrate in a PVD mode, the shielding protection pattern layer shields a first area of the substrate and exposes a second area of the substrate;

the second-type film layers, at least one of which covers the substrate on which the first-type film layer is formed; and at least one second film layer is formed by PVD, and covers the first film layer and the second region of the substrate.

According to a third aspect of the embodiments of the present disclosure, there is provided a mobile terminal including:

a second aspect of embodiments of the present disclosure provides a housing for forming a cavity;

a functional element located within the cavity formed by the housing.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

at least one first film layer is formed on a substrate covered with a shielding protection pattern layer in a PVD (physical vapor deposition) mode, the shielding protection pattern layer is removed after the at least one first film layer is formed, at least one second film layer is formed in a PVD mode, the first area of the substrate is covered with the at least one first film layer, and the at least one second film layer covers the first film layer and the second area of the substrate. When visible light irradiates on the shell formed with the first film layer and the second film layer, the first film layer and the second film layer in the first area are stacked, and the second film layer in the second area reflects, interferes, diffracts and the like visible light, so that the first area of the shell is different from the second area to present different visual effects, the requirements of a user on shells with different visual effects are met, and the improvement of user experience is facilitated.

In addition, compared with the method of coating the pigment, the first film layer and the second film layer are formed by the PVD method in the embodiment, so that the first film layer is stably fixed on the substrate of the housing, the second film layer is stably fixed on the first film layer and the second region of the substrate, and the phenomenon that the pigment generated by coating the pigment is abraded and falls off rarely occurs.

Moreover, the first film layer and the second film layer formed by PVD in the embodiment have good quality, and the thicknesses of the first film layer and the second film layer can be accurately controlled, so that the processing effect of the first film layer and the second film layer on visible light is improved, for example, compared with other processes such as ink printing, the color rendering effect of the shell is more natural, and the color fading phenomenon is less.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a flow chart illustrating a method of making a housing according to an exemplary embodiment;

FIG. 2 is a partial schematic illustration of a housing according to an exemplary embodiment;

FIG. 3 is a partial schematic view two of a housing according to an exemplary embodiment;

FIG. 4 is a partial schematic illustration three of a housing according to an exemplary embodiment;

FIG. 5 is a partial schematic view four of a housing shown in accordance with an exemplary embodiment;

FIG. 6 is a partial schematic illustration of a housing according to an exemplary embodiment;

FIG. 7 is a block diagram illustrating an apparatus in accordance with an example embodiment.

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 embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Fig. 1 is a flow chart illustrating a method of manufacturing a housing according to an exemplary embodiment, as shown in fig. 1, including the steps of:

s100: forming a shielding protection pattern layer on the substrate of the shell; the shielding protection pattern layer shields the first area of the substrate and exposes the second area of the substrate;

s110: forming at least one first film layer on the substrate covering the shielding protection pattern layer in a PVD (physical vapor deposition) mode;

s120: after at least one first film layer is formed, removing the shielding protection pattern layer;

s130: forming at least one second film layer on the substrate with the first film layer by a PVD (physical vapor deposition) mode; wherein the at least one second type of film layer covers the first type of film layer and the second area of the substrate.

In some embodiments, the substrate of the housing is a transparent substrate to allow external light to enter the housing from the substrate. Illustratively, the transparent substrate may include: transparent glasses, for example, chimpanzee series glasses (Gorilla Glass, such as GG3, GG5) by corning, usa, and the like. The transparent substrate may further include: transparent plastics, for example, Polymethyl Methacrylate (PMMA), Polycarbonate (PC), and the like. Here, the external light may include: light rays of visible light.

For example, in S100, the method of forming the shielding protection pattern layer may include: screen printing method, transfer printing method or spraying method. For example, when the material of the shielding protection pattern layer is ink, a screen printing method may be adopted, and the ink is transferred to the substrate of the housing through the mesh holes on the screen by pressing of the squeegee, so as to form the shielding protection pattern layer on the substrate of the housing. The method has simple process steps and low cost.

Illustratively, the constituent materials of the first type of film layer may include: silicon dioxide (SiO)₂) Titanium dioxide (TiO)₂) Niobium (Ni) pentoxide₂O₅) And the like.

In S110, the PVD method may include: vapor deposition, sputter coating, and the like.

For example, when the first type of film layer is made of silicon dioxide, S110 may specifically include: under the vacuum condition, the silicon dioxide target material is firstly dissolved and then evaporated by a direct heating or indirect heating mode, and then target material atoms or target material molecules fly to a substrate covered with a shielding protection pattern layer under the action of glow discharge after obtaining enough energy by an Ion Assisted Deposition (IAD) mode and are deposited on the substrate to form a silicon dioxide film layer.

In the process of forming the first film layer based on the shielding protection pattern layer, the first film layer covers the shielding protection pattern layer. When the shielding protection pattern layer is removed, the first film layer covering the shielding protection pattern layer is also taken away, and the second area of the substrate is exposed. Thus, when the second type of film layer is formed, the at least one second type of film layer covers the second region of the substrate, and the second region of the substrate is in contact with the at least one second type of film layer. Namely, a first area of a substrate is stacked with a first film layer and a second film layer; and the second area of the substrate covers the second type of film layer and does not cover the first type of film layer, so that the film layers stacked in different areas of the substrate have different structures.

For example, the composition materials of the second type film layer may include: silicon dioxide, titanium dioxide, niobium pentoxide, and the like.

For example, when the constituent material of the second-type film layer is silicon dioxide, the method for forming at least one second-type film layer may specifically include: under the vacuum condition, the silicon dioxide target is firstly dissolved and then evaporated by a direct heating or indirect heating mode, and target atoms or target molecules fly to a substrate covered with a first film layer and are deposited on the substrate to form a silicon dioxide film layer after obtaining enough energy under the action of glow discharge by an ion-assisted plating mode.

In the embodiment, at least one second-type film layer is formed on the substrate on which the first-type film layer is formed, wherein the at least one second-type film layer covers the first-type film layer and the second region of the substrate, so that a stacked structure of the first-type film layer and the second-type film layer is formed in the first region of the substrate, and the at least one second-type film layer is covered in the second region of the substrate, thereby realizing the formation of differentiated film layer structures in different regions of the substrate. When visible light shines on the casing that is formed with first class rete and second class rete, through the first class rete in first region and the stack structure of second class rete and the second class rete in second region produce handles such as reflection, interference and diffraction to visible light, utilize structure chromogenic principle, through the membranous layer structure of different regional differentiation, make the different regions of basement present different visual effects, be favorable to promoting user experience.

In addition, this embodiment forms first class rete and second class rete through the PVD mode for first class rete is stable to be fixed in the first region of casing, and makes second class rete stable to be fixed on the second region and the first rete of casing, has reduced the risk that first class rete and second class rete drop, and the phenomenon that the pigment wearing and tearing that the produced of coating pigment dropped rarely appears.

And, the PVD technology can realize accurate control to the thickness of first class rete and second class rete, helps promoting first class rete and second class rete to the treatment effect of visible light, for other technologies such as printing ink printing, the colour effect that can make the casing present is more natural, still has the advantage such as the phenomenon of fading is few.

According to an embodiment, S110 may further include:

forming a plurality of first film layers which are stacked in a PVD mode on the basis of the shielding protection pattern layer; wherein, different first type film layers have different treatment effects on visible light so as to present different visual effects.

S130 may further include:

forming a plurality of second film layers in a stacking mode on the substrate with the first film layers through a PVD mode; wherein, different second type film layers have different treatment effects on visible light so as to present different visual effects.

For example, based on the shielding protection pattern layer, the number of the first type film layers formed may be: 2, 3, 5, 7, 11 layers, etc. For example, when the number of the first type film layers formed is 5, the stacking order of the first type film layers formed on the substrate of the housing may be: silicon dioxide layer, titanium dioxide layer, silicon dioxide layer.

For example, the plurality of first type film layers of the formed stacked arrangement may include: the film comprises at least two different first film layers, wherein the different first film layers have different treatment effects on visible light, and further present different visual effects. Here, the different visual effects may include: different colors, or different brightness, etc. For example, a multi-color fade, a multi-color jump, a fantasy color effect, a highlight effect, a brightness reduction effect, etc. may be presented. The visual effect presented may also be related to the viewing angle of the observation or the wavelength of the incident visible light. For example, when the user views the housing at different viewing angles, the housing may be observed to appear in different colors.

According to one embodiment, the first type of film layers have the same material and different thicknesses, and the first type of film layers with different thicknesses and the same material have different interference treatment effects on visible light.

Illustratively, the different first type of film layer may further comprise: the first film layer and the second first film layer are made of the same material and have different thicknesses.

For example, the first film layer is made of silicon dioxide and has a thickness of 10 nm; the second first film layer is made of silicon dioxide and has a thickness of 50 nm. Because the material of the first film layer is the same as the material of the second first film layer, the refractive index of the first film layer is the same as the refractive index of the second first film layer. At this time, a first film layer having a material different from that of the first film layer may be disposed between the first film layer and the second first film layer. For example, the first type of film layer stacking sequence at this time may include: a silicon dioxide layer with a thickness of 10 nm, a titanium dioxide layer and a silicon dioxide layer with a thickness of 50 nm.

Because the thickness of the first-type film layer is different from the thickness of the second first-type film layer, when visible light with the same wavelength respectively irradiates the first-type film layer and the second first-type film layer, the interference effect of the first-type film layer on the visible light is different from the interference effect of the second first-type film layer on the visible light, and thus the visual effects presented by the first-type film layer and the second first-type film layer are different.

In this embodiment, a first type film layer and a second first type film layer are sequentially stacked and arranged, wherein the first type film layer and the second first type film layer are made of the same material and have different thicknesses, and the thickness of the first type film layer can be selected according to the user requirements to present different visual effects, thereby facilitating improvement of user experience.

According to an embodiment, the first type of film layer is made of different materials, and the first type of film layer made of different materials has different refractive indexes.

In this embodiment, the first type of film structure and the second type of film structure may be designed according to design requirements. For example, the material of the first film layer, the number of stacked layers, the thickness of each layer, etc. may be selected according to design requirements.

Illustratively, the different first type of film layer may include: a third first type film layer and a fourth first type film layer which are made of different materials and have the same thickness.

For example, the third first type film layer is made of silicon dioxide and has a thickness of 10 nm; the fourth first-type film layer is made of titanium dioxide and has a thickness of 10 nanometers. The third first film layer and the fourth first film layer are made of different materials, so that the refractive indexes of the third first film layer and the fourth first film layer are different.

When external light with the same wavelength respectively irradiates a third first-type film layer and a fourth first-type film layer, the refraction and interference effects of the third first-type film layer on the external light are different from the refraction and interference effects of the fourth first-type film layer on the external light, and therefore the visual effects of the third first-type film layer and the fourth first-type film layer are different.

In this embodiment, a third first type film layer and a fourth first type film layer are sequentially stacked through formation, wherein the third first type film layer and the fourth first type film layer are different in material and same in thickness, and the reflectivity of a preset waveband in visible light can be enhanced by selecting suitable materials of the third first type film layer and the fourth first type film layer according to user requirements, so that different visual effects can be presented, the method is simple, and the improvement of user experience is facilitated. Here, the predetermined wavelength band may be selected according to design requirements, for example, in order to make the housing appear blue, the wavelength range of the predetermined wavelength band may be: 400 nm to 500 nm.

In summary, because the refractive indexes of the plurality of first-type film layers which are stacked are not completely the same, or the thicknesses of the plurality of first-type film layers are not completely the same, after incident visible light passes through the first-type film layers which are stacked in a multilayer manner, part of light is reflected and refracted on the upper surface and the lower surface of each first-type film layer, the processing effects of the different first-type film layers on the visible light are different, and then the materials, the thicknesses and the like of the first-type film layers and the second-type film layers can be selected according to design requirements according to the structure color rendering principle, so that the visual effect presented by the shell is more natural and richer.

According to an embodiment, the different second-type film layers are the same in material and different in thickness, and the second-type film layers of the same material and different in thickness have different interference treatment effects on visible light.

For example, the first and second film layers are made of silicon dioxide and have a thickness of 10 nm; the second film layer is made of silicon dioxide and has a thickness of 50 nm. Because the material of the first second-type film layer is the same as that of the second-type film layer, the refractive index of the first second-type film layer is the same as that of the second-type film layer. At this time, a second type film layer with a material different from that of the first second type film layer can be arranged between the first second type film layer and the second type film layer. For example, the second type of film layer stacking sequence at this time may include: a silicon dioxide layer with a thickness of 10 nm, a titanium dioxide layer and a silicon dioxide layer with a thickness of 50 nm.

Because the thickness of the first second-type film layer is different from that of the second-type film layer, when visible light with the same wavelength respectively irradiates the first second-type film layer and the second-type film layer, the interference effect of the first second-type film layer on the visible light is different from that of the second-type film layer on the visible light, and further, the visual effects presented by the first second-type film layer and the second-type film layer are different.

In this embodiment, a first second type film layer and a second type film layer are sequentially stacked and arranged, wherein the first second type film layer and the second type film layer are made of the same material and have different thicknesses, and the thicknesses of the second type film layers can be selected according to user requirements to present different visual effects.

According to an embodiment, the second type of film layer is made of different materials, and the second type of film layer made of different materials has different refractive indexes.

Illustratively, the different second type of film layer may include: a third second film layer and a fourth second film layer which are made of different materials and have the same thickness.

For example, the third second type film layer is made of silicon dioxide and has a thickness of 10 nm; the fourth second film layer is made of titanium dioxide and has a thickness of 10 nanometers. The third second-type film layer and the fourth second-type film layer are made of different materials, so that the refractive indexes of the third second-type film layer and the fourth second-type film layer are different.

When the visible light with the same wavelength respectively irradiates the third second-type film layer and the fourth second-type film layer, the refraction and interference of the third second-type film layer on the visible light is different from the refraction and interference of the fourth second-type film layer on the visible light, so that the visual effects presented by the third second-type film layer and the fourth second-type film layer are different.

In this embodiment, stack up the third second type rete and the fourth second type rete that set up in proper order through forming, wherein, the material difference and the thickness of third second type rete and fourth second type rete are the same, can be according to user's demand, through selecting suitable third second type rete and fourth second type rete material to present different visual effects.

In summary, because the refractive index of a plurality of second type retes that stack up the setting is not the same completely, or the thickness of a plurality of second type retes is not the same completely, the incident visible light all has partial light to take place reflection and refraction at the upper surface and the lower surface of every second type rete after the superimposed second type rete of multilayer, and different second type retes are different to the treatment effect of visible light for the visual effect that the casing appears is richer.

Moreover, the embodiment can realize the multi-region multi-color bionic multicolor effect on the substrate of the shell based on the difference of the material and the thickness of the second film layers and the difference of the material and the thickness of the second film layers, thereby being beneficial to further enriching the visual effect presented by the shell and further improving the user experience.

According to an embodiment, the method may further comprise:

forming a buffer layer on the substrate of the shell; the buffer layer is positioned between the first film layer and the substrate, is also positioned between the second film layer and the substrate, and is used for buffering the internal stress between the first film layer and the substrate and the internal stress between the second film layer and the substrate.

In this embodiment, S100 may include: a shielding protection pattern layer is formed on the substrate on which the buffer layer is formed.

Illustratively, the buffer layer may be formed on the substrate of the case by direct coating. The buffer layer may be composed of materials including: ultraviolet (UV) curable silicone sols, such as OC 0.

When the thickness of the formed buffer layer is smaller than the first thickness threshold value, namely the buffer layer is thin, the buffer effect of the buffer layer on the residual stress between the first film layer and the substrate is poor, and the strength of the shell is reduced.

When the thickness of the formed buffer layer is greater than the second thickness threshold value, the second thickness threshold value is greater than the first thickness threshold value, namely, the buffer layer is thick, the adhesion effect of the buffer layer on the substrate is poor, the buffer layer is easy to break, and the service life of the buffer layer is shortened.

Illustratively, the first thickness threshold may be 0.5 microns and the second thickness threshold may be 5 microns. At this time, the thickness of the buffer layer may be within the range: 1 micron to 2 microns.

According to the embodiment, the buffer layer is formed on the substrate of the shell, the shielding protection pattern layer is formed on the substrate with the buffer layer, the first film layer is formed through PVD, the influence of the residual stress of the formed first film layer on the strength of the substrate of the shell can be reduced, the strength and the use performance of the shell with the first film layer are improved, and the influence of the first film layer on the service life of the shell is reduced.

According to an embodiment, the method further comprises:

forming a functional layer on the substrate on which the second type film layer is formed; wherein the first type of film layer and the second type of film layer are positioned on the inner surface of the shell.

In this embodiment, the functional layer is located on the inner surface of the shell and covers the second type film layer. The constituent material of the functional layer may be ink. For example, black ink or white ink.

For example, the functional layer may be used to block light emitted from an external light source to the functional element in the housing. This embodiment shelters from the light of external light source to the interior functional element transmission of casing through this functional layer, so, the user can not observe the functional element in the casing from the casing outward, is favorable to improving user experience.

For example, the functional layer may be used to shield electromagnetic wave interference emitted from the outside to the functional element in the housing. Thus, the performance of the functional element can be ensured.

The functional layer can also be used to conduct heat between the functional element of the housing and the environment. Therefore, the heat dissipation of the functional element is facilitated, and the performance of the functional element is ensured.

And the functional layer is used for coacting with an external light source and the substrate formed with the first film layer and the second film layer so as to enable the shell to present a preset color. For example, when the functional layer is a black ink layer, the substrate can have a black ceramic texture under the combined action of the external light source, the first film layer and the second film layer, and the user experience can be improved.

The functional layer can also be used for isolating the second type of film layer from the functional element, so that the risk of scratching or pollution of the second type of film layer can be reduced, the performance of the second type of film layer can be ensured, and the service life of the second type of film layer can be prolonged.

Example 1

This example illustrates a method of making a housing, the method comprising the steps of:

the first step is as follows: the film layer structure is designed according to the expected appearance requirements of the finished product.

In the first step, specifically, based on the expected appearance requirement of the finished product, the deposition thickness and the color effect of the film layer can be simulated by using Essential Macleod software to obtain the film layer structure. Here, the film layer structure comprises at least one film layer of a first type and at least one film layer of a second type.

Illustratively, the film layer structure is (LH) ^⁵L, 11 layers in total; wherein L represents a silicon dioxide layer and H represents a niobium pentoxide layer. The sequence of the film layer structure here is: a silicon dioxide layer, a niobium pentoxide layer, and a silicon dioxide layer. Through software simulation, the thicknesses of the alternately arranged silicon dioxide layer and the niobium pentoxide layer in the film layer structure are respectively as follows: 10 nm, 56.29 nm, 50.45 nm, 41.36 nm, 55.48 nm, 16.1 nm, 116.32 nm, 6.43 nm, 43.23 nm, 57.28 nm and 10 nm. The total thickness of the film layer structure is 462.94 nanometers.

The second step is that: a buffer layer is formed on the substrate of the housing.

Illustratively, the substrate of the housing is a transparent substrate. The materials making up the substrate may include: glass or transparent plastic. Specifically, when the substrate is glass, 2.5D glass, such as GG3, GG5, may be included. When the substrate is plastic, it may include: PMMA, PC.

The buffer layer may have a thickness of 1 micron or 2 microns. The material constituting the buffer layer may be an ultraviolet-curable type silicone sol, such as OC 0.

In order to obtain better angle color change and color illusion effects on the substrate of the shell and facilitate color effect matching of different areas, the total number X of layers of the film layer structure can be more than or equal to 7. At the moment, the buffer layer formed on the substrate can buffer the internal stress action between the film layer structure and the substrate, the strength of the shell is improved, and the service life of the shell is ensured.

The third step: forming a shielding protection pattern layer on the inner surface of the shell with the buffer layer by silk-screen printing; the shielding protection pattern layer shields the first area of the substrate and exposes the second area of the substrate.

The material constituting the shield protective pattern layer may include: and (3) printing ink. The type of the printing ink serving as the shielding protection pattern layer needs to be matched according to a subsequent removing process, and the feasibility of the removing process in subsequent manufacturing is considered.

The third step: and cleaning the shell with the screen printing formed shielding protection pattern layer, and covering a preset protection film on the inner surface of the shell.

The impurities remaining on the surface of the housing may affect the quality of the film structure of the subsequent evaporation, and therefore, the impurities remaining on the surface of the housing, such as dust particles, need to be cleaned.

The preset protective film may be formed of Polyethylene (PE) plastic.

Through the casing internal surface after wasing cover predetermine the protection film, can be at the casing in-process after shifting the washing, avoid impurity such as dust in the external environment to adhere to at the casing internal surface, guaranteed the cleanliness of casing internal surface, be favorable to improving the quality of the rete structure of follow-up coating by vaporization.

The fourth step: and removing the preset protective film, and depositing a first film layer on the substrate covered with the shielding protective pattern layer in an evaporation mode according to the designed film layer structure.

After the substrate with the shielding protection pattern layer is transferred into the evaporation equipment, the preset protection film can be removed by a mechanical stripping method.

Illustratively, the first type of film layer is an optical film layer. The deposition of the first layer is typically a combination of electron beam heating (E-gun) and ion assisted plating. The first film layer comprises the following materials: materials having a light transmittance in the visible light band (380 nm to 780 nm) greater than a light transmittance threshold value, for example, silicon dioxide, titanium dioxide, niobium pentoxide, or the like. Here, the light transmittance threshold may be: 60%, 80%, 90% and 95%.

The number of layers Y of the first type of film layer may be determined according to the desired color effect of the finished product. Here, the desired color may be achieved by simulation of the optical film design software TFCalc or Essential mac, the number of layers Y of the first type of film layer being less than the total number of layers X of the film layer structure.

The fifth step: after removing the shielding protection pattern layer, forming at least one second film layer on the substrate with the first film layer formed by evaporation; wherein the at least one second type of film layer covers the first type of film layer and the second area of the substrate.

And after the Y layer is plated, namely the evaporation of the first film layer is finished, removing the shielding protection pattern layer. Illustratively, the method for removing the shielding protection pattern layer may specifically include: thermal decomposition or dissolution.

When the shield protective pattern layer is removed by a thermal decomposition method, a boiling heating method may be used. For example, the housing is placed in a container with deionized water, and the housing is completely immersed in the deionized water; the vessel is heated and heat is transferred to the housing by the deionized water. When the temperature of the shielding protection pattern layer is increased to be equal to the decomposition temperature, the shielding protection pattern layer is decomposed by heat.

For example, when the shielding protection pattern layer is removed using a dissolving method, a predetermined solution may be selected for dissolving the shielding protection pattern layer according to the solubility of the shielding protection pattern layer. Specifically, the predetermined solution may include: alcohol, chloroform, acetone, ethyl acetate, and the like.

And a sixth step: according to the expected color effect, a protective layer is covered on the inner surface of the substrate on which the first film layer and the second film layer are formed by evaporation.

In this example, referring to fig. 2, the first region 101 includes a first type film layer and a second type film layer stacked, and the total number of the film layers evaporated in the first region is 11; the second region 102 includes a second type of film layers stacked, and the number of the film layers evaporated in the second region is a difference between X and Y. Fig. 2 shows that the first region of the substrate exhibits a different visual effect from the second region.

Fig. 3 shows a schematic diagram of the color of the first region 101 as a function of viewing angle in an embodiment. Wherein, from the left side of fig. 3 to the right side of fig. 3, the viewing angle gradually increases from 0 ° to 70 ° with a gradient of 5 °. Here, when the viewing angle is 0 °, the consumer looks at the first area with the line of sight of the consumer perpendicular to the first area 101. When the viewing angle is 70 deg., the consumer's line of sight is at an angle of 70 deg. to a plane perpendicular to the first area.

Illustratively, when the viewing angle is 0 °, the color presented is blue. As the viewing angle increases from 0 ° to 70 °, the color presented gradually changes from blue to violet.

Fig. 4 shows a schematic diagram of the color of the second area 102 as a function of the viewing angle when the number of layers of the first type of film layer is 3 and the number of layers of the second type of film layer is 8. Wherein, from the left side of fig. 4 to the right side of fig. 4, the viewing angle gradually increases from 0 ° to 70 ° with a gradient of 5 °.

Illustratively, when the viewing angle is 0 °, the color presented is green. With a gradually increasing viewing angle, for example, when the viewing angle is 35 °, the color presented is blue. As the viewing angle increases from 35 ° to 70 °, the color presented gradually changes from blue to violet.

Fig. 5 shows a schematic diagram of the color of the second area 102 with respect to the viewing angle when the number of the first type of film layers is 5 and the number of the second type of film layers is 6. Wherein, from the left side of fig. 5 to the right side of fig. 5, the viewing angle gradually increases from 0 ° to 70 ° with a gradient of 5 °.

Illustratively, when the viewing angle is 0 °, the color presented is orange. With a gradually increasing viewing angle, for example, when the viewing angle is 35 °, the color appearing is yellow. As the viewing angle increases from 35 ° to 70 °, the color of the appearance gradually changes from yellow to green.

Fig. 6 shows a schematic diagram of the color of the second area 102 with the viewing angle when the number of the first type of film layers is 7 and the number of the second type of film layers is 4. Wherein, from the left side of fig. 6 to the right side of fig. 3, the viewing angle gradually increases from 0 ° to 70 ° with a gradient of 5 °.

As shown in fig. 6, at this time, the degree of the color of the second region 102 changing with the viewing angle is small, and even the characteristic that the second region 102 changes with the viewing angle is difficult to be observed by naked eyes, but after the inner surface of the casing shown in fig. 6 is coated with black ink as the functional layer, the inner surface of the casing has a black ceramic texture.

The example provides a method for plating a multilayer film system by local shielding and twice, which is characterized in that differential film layer stacking is constructed in different areas of a transparent substrate of a shell by taking structural color generation as a principle, and a multi-area multi-color bionic multicolor effect is realized on the substrate of the shell by film layer stacking design of different refractive indexes and film layer thickness control in cooperation with a local silk-screen shielding process, so that the bionic multicolor effect has the bionic appearance characteristic similar to a butterfly wing.

Compared with an ink and in-mold transfer label (IMT) decoration method, the preparation method of the housing provided by the embodiment can enable the color presented by the housing to change along with the difference of the viewing angle and the incident light by properly stacking the film layer design, controlling the film thickness and the like, greatly enrich the appearance effect of the housing of the mobile terminal, and improve the user experience.

The embodiment of the invention provides a shell. According to one embodiment, at least a portion of the housing is prepared by any of the above methods, the housing comprising:

a substrate for supporting a first type of membrane layer and a second type of membrane layer;

at least one first film layer covers the first area of the substrate and exposes the second area of the substrate; at least one first film layer is formed on a shielding protection pattern layer on a substrate in a PVD mode, the shielding protection pattern layer shields a first region of the substrate, and a second region of the substrate is exposed;

at least one second film layer covers the substrate on which the first film layer is formed; the at least one second type film layer is formed through a PVD mode, and the at least one second type film layer covers the first type film layer and the second area of the substrate.

In this embodiment, the substrate is a transparent substrate to allow visible light to enter the housing from the substrate. Illustratively, the transparent substrate may include: transparent glasses, for example, chimpanzee series glasses (Gorilla Glass, such as GG3, GG5) by corning, usa, and the like. The transparent substrate may further include: transparent plastics such as polymethyl methacrylate, polycarbonate, and the like.

In this embodiment, the first type of membrane layer and the second type of membrane layer are located on the inner surface of the housing.

According to an embodiment, the housing may further comprise:

and the buffer layer is positioned between the first film layer and the substrate of the shell and is used for buffering internal stress between the first film layer and the substrate.

When the second type of film layer is formed on the shell, the buffer layer is located between the second type of film layer and the second area of the substrate and used for buffering internal stress between the second type of film layer and the substrate.

According to an embodiment, the housing may further comprise:

and the functional layer is positioned on the inner surface of the shell, covers the substrate on which the second film layer is formed and is used for shielding light rays emitted to the functional element in the shell from an external light source.

Functional layer can shelter from the light of external light source to the interior functional element transmission of casing in this embodiment, so, the user can not observe the functional element in the casing from the casing outward, is favorable to improving user experience.

The functional layer can also be used for shielding the electromagnetic wave interference emitted to the functional element in the shell from the outside, and the performance of the functional element is ensured.

The protective layer can also be used for conducting heat between the functional element of the shell and the external environment, so that the functional element is facilitated to dissipate heat, and the performance of the functional element is ensured.

The functional layer can also be used for coaction with an external light source and a substrate formed with a first film layer and a second film layer so as to enable the shell to present a preset color. For example, when the protective layer is a black ink layer, the substrate can have a black ceramic texture under the combined action of the external light source, the first film layer and the second film layer, which is beneficial to improving user experience.

The functional layer can also be used for isolating the second type of film layer from functional elements, so that the risk of scratching or pollution of the second type of film layer is reduced, the performance of the second type of film layer is favorably ensured, and the service life of the second type of film layer is prolonged.

The shell prepared by the method provided by the embodiment is combined with the stacking design and the thickness control of the first film layer and the second film layer through the structural color generation principle, the bionic multicolor effect of multiple regions and multiple colors is realized on the substrate of the shell, the presented colors are natural, the color fading probability is reduced, and the service life of the shell is prolonged.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 7 is a block diagram illustrating an apparatus 800 including the housing described above, according to an exemplary embodiment. The apparatus 800 may comprise:

the shell is used for forming a cavity;

and the functional element is positioned in a cavity formed by the shell.

The apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Referring to fig. 7, the apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power component 806 provides power to the various components of device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 800.

The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, communications component 816 further includes a Near Field Communications (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.