CN210745739U - Ceramic case and electronic device - Google Patents

Abstract

The application provides a ceramic case and an electronic device. The ceramic case includes: the light-transmitting ceramic is provided with a first surface, and the light transmittance of the light-transmitting ceramic is more than 1%; the adhesive layer is arranged on the first surface; decorative layer, decorative layer setting keep away from printing opacity pottery one side at the glue film, and the decorative layer includes: a membrane; and the color layer is arranged on one surface of the diaphragm. Therefore, the color layer is combined with the transparent ceramic through the membrane and the adhesive layer, so that the diversity of the appearance colors of the ceramic shell can be improved, the appearance effects of various colors can be realized, the mechanical properties of the transparent ceramic cannot be influenced, and the better mechanical properties such as bending strength and the like of the ceramic shell can be effectively ensured; furthermore, the ceramic shell has better stability, the color layer is not easy to fall off, and the good appearance effect of the ceramic shell can be further ensured for a long time.

Description

Ceramic case and electronic device

Technical Field

The application relates to the technical field of electronic equipment, in particular to a ceramic shell and electronic equipment.

Background

At present, a color ceramic shell is usually prepared by adding doping elements, such as Er, Co or Cr, into white ceramic (such as zirconia ceramic) and adjusting the proportion of the doping elements to realize pink, blue or green color ceramic, respectively. However, the above scheme can only realize the color ceramics with a single color, and the difference in mechanical properties exists between the ceramics and the added primary color, which results in the mechanical properties of the color ceramics being inferior to that of the white ceramics, and moreover, the hardness of the color ceramics is relatively high, thereby further improving the processing cost, in addition, the color matching is difficult, and the later sintering period is correspondingly lengthened.

Therefore, research on the colored ceramic case is awaited.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present application is to provide a ceramic case that can realize a plurality of colors and is stable.

In one aspect of the present application, a ceramic housing is provided. According to an embodiment of the application, the ceramic housing comprises: a light-transmissive ceramic having a first surface, the light-transmissive ceramic having a light transmittance of greater than 1%; a glue layer disposed on the first surface; the decorative layer, the decorative layer setting is in the glue film is kept away from one side of printing opacity pottery, just the decorative layer includes: a membrane; a color layer disposed on one surface of the diaphragm. Therefore, the color layer is combined with the transparent ceramic through the membrane and the adhesive layer, so that the diversity of the appearance colors of the ceramic shell can be improved, the appearance effects of various colors can be realized, the mechanical properties of the transparent ceramic cannot be influenced, and the better mechanical properties such as bending strength and the like of the ceramic shell can be effectively ensured; furthermore, the ceramic shell has better stability, the color layer is not easy to fall off, and the good appearance effect of the ceramic shell can be further ensured for a long time.

In yet another aspect of the present application, an electronic device is provided. According to an embodiment of the present application, the electronic device includes: the ceramic housing described above; the display screen assembly is connected with the ceramic shell, and an installation space is defined between the display screen assembly and the ceramic shell, wherein the color layer of the ceramic shell is arranged close to the installation space; and the mainboard is arranged in the installation space and is electrically connected with the display screen assembly. Therefore, the ceramic shell of the electronic equipment has the appearance effect of multiple colors, the stability of the ceramic shell is better, and the colors are not easy to fall off.

Drawings

FIG. 1 is a schematic structural view of a ceramic shell according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a ceramic shell according to another embodiment of the present application;

FIG. 3 is a schematic view of a prior art glass housing;

FIG. 4 is a flow chart of a method of making a ceramic shell according to yet another embodiment of the present application;

FIG. 5 is a schematic view of a structure of a decorative layer and a transparent ceramic according to yet another embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an electronic device in another embodiment of the present application.

Detailed Description

Embodiments of the present application are described in detail below. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the present disclosure. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.

In one aspect of the present application, a ceramic housing is provided. According to an embodiment of the present application, referring to fig. 1 and 2, a ceramic case includes: a light-transmissive ceramic 10, the light-transmissive ceramic 10 having a first surface 11, and the light transmittance of the light-transmissive ceramic 10 being greater than 1%; a glue layer 20, the glue layer 20 being disposed on the first surface 11; the decoration layer 30, the decoration layer 30 is disposed on a side of the glue layer 20 away from the transparent ceramic 10, and the decoration layer 30 includes: a membrane 31; a color layer 32, the color layer 32 being disposed on one surface of the diaphragm 31. Therefore, the color layer is combined with the transparent ceramic through the membrane and the adhesive layer, so that the diversity of the appearance colors of the ceramic shell can be improved, the appearance effects of various colors can be realized, the mechanical properties of the transparent ceramic cannot be influenced, and the better mechanical properties such as bending strength and the like of the ceramic shell can be effectively ensured; furthermore, the ceramic shell has better stability, and the color layer is not easy to fall off, so that the good appearance effect of the ceramic shell can be ensured for a long time; in addition, the combination of colour layer and printing opacity pottery, the outward appearance color of ceramic casing is the composite color of colour layer and printing opacity pottery, presents a novel dim color, is not the color of the own on colour layer, so can further enrich the outward appearance color of ceramic casing.

The term "first" is used herein for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as a "first" may explicitly or implicitly include one or more of that feature.

In order to realize color diversity of the appearance of the ceramic, a color layer can be directly arranged on the first surface of the ceramic, for example, color ink is formed by spraying on the first surface, but the inventor finds that the bonding force between the transparent ceramic and the ink is poor, and after cosmetic and water boiling resistance tests, the ink layer has a larger collapse phenomenon, so that the stability of the ceramic shell is poor; moreover, when the spraying process is used for forming the color ink on the ceramic surface, the utilization rate of the ink in the spraying process is low, so that the spraying cost is increased by 50-100% compared with other ink coating methods (such as silk screen printing, but silk screen printing is difficult to perform on the ceramic surface with a 2.5D or 3D structure). The color layer is arranged on the film, and then the film is attached to the light-transmitting ceramic through the adhesive layer, so that the problem that the color layer is easy to fall off can be effectively solved; besides spraying, the ink layer can be formed on the membrane by adopting a coating mode such as screen printing and the like, and then the obtained decorative layer is attached to the first surface of the light-transmitting ceramic, so that the manufacturing cost of the ceramic shell can be greatly reduced.

The specific structure of the ceramic shell is described in detail below according to some embodiments of the present application:

in some embodiments, referring to fig. 1, the color layer 32 is disposed on a surface of the membrane 31 remote from the first surface 11, and the glue layer 20 is disposed between the membrane 31 and the first surface 11. From this, when guaranteeing the effective colour development in colour layer, can avoid the erosion of glue film to colour layer. Because the color layer 32 is disposed on the side of the diaphragm 31 away from the transparent ceramic 10, the diaphragm is a transparent diaphragm so that the color developing effect of the color layer on the appearance surface of the ceramic shell is not affected by the diaphragm.

In other embodiments, referring to fig. 2, the color layer 32 is disposed on the surface of the film 31 near the first surface 11, and the glue layer 20 is disposed between the color layer 32 and the first surface 11. From this, the colour layer is direct to be set up through glue film and the laminating of printing opacity pottery, can further promote the colour development effect on the colour layer at ceramic casing outward appearance face. Since the color layer 32 is disposed on the side of the diaphragm 31 close to the transparent ceramic 10, the transparency of the diaphragm does not affect the color development effect of the color layer on the appearance surface of the ceramic shell, and therefore, the diaphragm may be a transparent diaphragm or an opaque diaphragm.

Referring to fig. 3, if the decoration layer of the present application is attached to the glass 40 through the glue layer 20, in order to achieve a better appearance color effect of the glass housing, a reflection film 50 (the reflection film can increase the light reflectivity of the appearance surface of the glass housing and has a certain light transmittance, and is composed of one or more oxide film layers, or called as a reflection film, and if there is no reflection film, the glossiness and brightness of the appearance color of the glass are poor) is disposed between the color layer 32 and the film 31, and the color layer 32 is disposed on one side of the film 31 away from the glue layer 20. The appearance color of the shell with the structure is the color of the color layer, and is not a hazy color sense; moreover, the colour layer only is fit for setting up the one side of keeping away from glue film 20 at diaphragm 31, if set up the one side that the glue film is close to at the diaphragm with the colour layer, then the reflectance coating needs to set up the one side that is close to the glue film at the colour layer (otherwise the colour layer can shelter from the reflectance coating, lead to its effect that loses the reflectance coating), but this kind of setting mode need carry out the coating film when preparing on the colour layer and form the reflectance coating, at the in-process of preparation reflectance coating like this, the colour layer suffers destruction relatively easily, especially printing ink colour layer, more receive the damage.

But need not to set up the reflectance coating in this application, direct will contain the decorative layer laminating of diaphragm and colour layer to printing opacity pottery the surface can, still can make ceramic case's outward appearance have the glossiness and the luminance of preferred, and the setting of reflectance coating still can lead to the color development effect on colour layer relatively poor moreover, leads to ceramic case's outward appearance color unobvious, and this is mainly because the reflectance coating reflects back light, leads to light can't shine the colour layer, and then makes its unable colour development. The structure of the ceramic shell is described in detail below according to some embodiments of the present application:

in some embodiments, referring to fig. 2, the ceramic shell is comprised of the following structure: a light-transmitting ceramic 10; a glue layer 20, the glue layer 20 being disposed on the first surface 11; a color layer 32, wherein the color layer 32 is arranged on the surface of the glue layer 20 far away from the light-transmitting ceramic 10; a diaphragm 31, the diaphragm 31 being disposed on a surface of the color layer 32 away from the light-transmitting ceramic 10;

in other embodiments, referring to fig. 1, the ceramic shell is comprised of the following structure: a light-transmitting ceramic 10; a glue layer 20, the glue layer 20 being disposed on the first surface 11; a membrane 31, a membrane 31 disposed on the surface of the glue layer 20 away from the transparent ceramic 20, and a color layer 32, the color layer 32 being disposed on the surface of the membrane 31 away from the transparent ceramic 10.

The specific material and the appearance structure of the transparent ceramic have no special requirements, and the transparent ceramic has the light transmittance of more than 1% and does not influence the color development effect of the color layer. In some embodiments, the ceramic is a zirconia ceramic; the appearance structure of the transparent ceramic can be a 2D structure, a 2.5D structure or a 3D structure, and the transparent ceramic can be flexibly selected by a person skilled in the art according to actual needs.

Further, the light transmittance of the transparent ceramic is greater than 1% and less than or equal to 80%, such as 1%, 3%, 5%, 8%, 10%, 15%, 20%, 30%, 40%, 50%, 60%, 70%, or 80%. Therefore, the transparent ceramic has better light transmittance, which is beneficial to the color development of the color layer on the appearance surface of the ceramic shell, wherein when the light transmittance of the transparent ceramic is larger, such as 60%, 70% or 80%, the transparent ceramic can be cubic crystal zirconia ceramic; if the light transmittance of the transparent ceramic is less than 1%, the light transmittance of the transparent ceramic is poor, and the color development effect of the color layer is relatively poor; if the light transmittance of the transparent ceramic is greater than 80%, the manufacturing cost of the transparent ceramic is high, and the process is difficult.

The specific material and color of the film sheet are not particularly limited, and those skilled in the art can flexibly select the film sheet according to actual conditions, in some embodiments, the film sheet is selected from materials such as PET (polyethylene terephthalate), PMMA (polymethyl methacrylate), TPU (thermoplastic polyurethane elastomer rubber) or PA (polyamide), and the materials have good light transmittance and are convenient to be tightly attached to the light-transmitting ceramic; in some embodiments, the color of the film is white, so that the white film does not mix with the color layer, so as to avoid affecting the appearance color effect of the ceramic shell.

Further, the thickness of the membrane is 50-100 microns, such as 50 microns, 60 microns, 70 microns, 80 microns, 90 microns or 100 microns. Therefore, the membrane has better strength and plays a good role in supporting the color layer; if the thickness of the membrane is less than 50 micrometers, the strength of the membrane is relatively poor, and the stability when the color layer is arranged on the surface of the membrane is relatively poor, namely the membrane is not enough to provide a better supporting function for the color layer; if the thickness of the film is larger than 100 micrometers, the thick film is likely to cause the loose adhesion between the decorative layer and the transparent ceramic, thereby generating bubbles.

Wherein, the concrete material of glue film can be OCA glues, and OCA glues and has good light transmissivity, can not influence the color development effect on colour layer. In some embodiments, the thickness of the glue layer is 25 to 50 microns, such as 25 microns, 30 microns, 35 microns, 40 microns, 45 microns, or 50 microns. Therefore, the bonding fastness of the decorative layer and the transparent ceramic is effectively ensured, the decorative layer and the transparent ceramic do not fall off, and the color development effect of the color layer is not influenced; if the thickness of the glue layer is less than 25 micrometers, the bonding fastness between the decorative layer and the light-transmitting ceramic is relatively poor, and the decorative layer and the light-transmitting ceramic are easy to separate in the long-term use process, so that the appearance color effect of the ceramic shell is seriously influenced; if the thickness of the glue layer is greater than 50 micrometers, the color layer will penetrate relatively poorly, resulting in poor expressive force of the appearance color of the ceramic shell.

Wherein, the color layer is at least one of an ink layer and a coating film layer. From this, can effectively guarantee the good colour development on colour layer, wherein, when colour layer was the printing ink layer, colour development effect on colour layer was better for ceramic casing's outward appearance color is more clear and more clear. In some embodiments, the plating layer is at least one of titanium oxide, thallium oxide, silicon dioxide, and niobium oxide, so as to effectively achieve the color development effect of the color layer.

Further, the thickness of the ink layer is 3-20 microns, such as 3 microns, 5 microns, 10 microns, 15 microns or 20 microns. Therefore, the better color development effect of the color layer can be effectively ensured; if the thickness is less than 3 micrometers, the color of the color layer is not bright due to less ink amount, which is not favorable for color development, i.e., the appearance color of the ceramic shell is relatively blurred, and the effect is poor; if the thickness is greater than 20 micrometers, the ink layer may cause paint collapse due to the greater thickness, which affects the appearance of the ceramic shell.

Further, the thickness of the coating layer is 50 to 1000 nanometers, such as 50 nanometers, 100 nanometers, 200 nanometers, 300 nanometers, 400 nanometers, 500 nanometers, 600 nanometers, 700 nanometers, 800 nanometers, 900 nanometers, 1000 nanometers. Therefore, the film coating layer can better develop color; if the thickness is less than 50 nanometers, the color development effect of the coating layer is relatively poor; if the thickness is larger than 1000 nm, the preparation cost is relatively increased.

In addition, specific color types and color distributions of the color layers have no special requirements, the color layers can be one color, can be color-contrasted by multiple colors, can also be gradual changes of one or more colors, and the like, and the color layers have no limitation requirements, and can be flexibly designed by technicians in the field according to actual requirements.

The shape structure of the ceramic shell has no limitation requirement, and can be a 2D structure, a 2.5D structure or a 3D structure, and a person skilled in the art can flexibly select the shape structure according to actual requirements without limitation requirements. It will be understood by those skilled in the art that when the ceramic housing is a 2.5D or 3D structure, the ceramic housing includes a rear cover and a middle frame, i.e., the rear cover and the middle frame of the housing are integrally formed.

In another aspect of the present application, there is provided a method for manufacturing a ceramic case, according to an embodiment of the present application, referring to fig. 4, the method for manufacturing a ceramic case includes:

s100: a color layer is formed on one surface of the film sheet to obtain a decorative layer.

Wherein, the skilled person can cut the membrane in advance according to the size of the ceramic shell to obtain the membrane with the required size. In addition, in order to prevent the surface of the membrane from being stained with dirt such as dust and oil stain, after cutting, anti-static protective films can be adhered to the two surfaces of the membrane in advance, and the protective films can be torn off when the membrane is used.

The method for forming the color layer is selected from screen printing, spraying or vacuum evaporation, specifically, in some embodiments, the color layer of the ink layer can be formed by screen printing, printing or spraying, and compared with a spraying process, the preparation cost of the ink layer can be greatly reduced when the ink layer is formed by screen printing; in other embodiments, the color layer of the coating layer may be formed by vacuum evaporation. Therefore, the skilled person can select a suitable preparation process according to the texture of the color layer.

In some embodiments, the ink layer is prepared on the membrane by screen printing, and the required pattern and color are realized by screen plate hollowing and multiple screen printing during preparation, wherein the process parameters of the screen printing meet the following conditions: the printing pressure of the scraper is 40-80N, and the pressing depth of the scraper is 0.7-1.5 mm, so that the obtained ink layer has good performance; if the pressure or the pressing depth of the scraper is too large, the ink layer is relatively easy to break, and the screen printing plate is damaged; if the squeegee pressure or the pressing depth is too small, printing failure is likely to occur, and the adhesion between the ink layer and the film is poor.

S200: and the decorative layer is attached to the first surface of the light-transmitting ceramic through the glue layer.

Wherein, laminate the decorative layer to the step on the first surface through the glue film and include: coating the glue layer 20 on the surface of the color layer 32, and then attaching the glue layer 20 to the first surface 11, that is, the color layer 32 is disposed between the glue layer 20 and the film 31, and the schematic structural diagram is shown in fig. 2; or, the step of attaching the decorative layer to the first surface through the glue layer comprises: the adhesive layer 20 is coated on the surface of the film 31 far away from the color layer 32, and then the adhesive layer 20 is attached to the first surface 11, that is, the film 31 is disposed between the color layer 32 and the adhesive layer 20, and the structural diagram is shown in fig. 1. From this, both can effectively laminate the decorative layer to printing opacity ceramic on the first surface, guarantee closely laminating between decorative layer and the printing opacity pottery, do not drop, can also effectively realize the color development effect on colour layer, richen ceramic case outward appearance color's variety.

Wherein, the laminating is gone on in the sticking film machine, and is specific: referring to fig. 5, the decoration layer 30 coated with a glue layer (not shown in fig. 5) and the transparent ceramic 10 are placed in a film sticking machine, and the decoration layer 30 is pressed on the first surface of the transparent ceramic 10 by using a soft silica gel 60, and further, the following conditions are satisfied during the sticking process: the pressure is 50-250N (such as 50N, 80N, 100N, 120N, 150N, 180N, 200N, 230N, 250N); the pressing time is 5-30 s (such as 5s, 10s, 15s, 20s, 25s and 30 s); the temperature (the temperature of the environment where the decorative layer is attached) is 40-60 ℃ (such as 40 ℃, 45 ℃, 50 ℃, 55 ℃ or 60 ℃). Therefore, the decoration layer is tightly adhered to the transparent ceramic under the conditions, the decoration layer has no folds, bubbles or deviation, and the peeling force of the decoration layer is larger than 10N; if the pressure is too small or the pressing time is too short, the adhesion between the decorative layer and the transparent ceramic is not tight, and bubbles are easy to generate; if the pressure is too large or the pressing time is too long, the color layer in the decorative layer is easily damaged due to too large pressure or too long pressing time; if the temperature is too low, the adhesive layer is solidified, so that the adhesive layer is relatively not beneficial to bonding; if the temperature is too high, the viscosity of the adhesive layer is too low, which is relatively not favorable for bonding.

According to the embodiment of the application, the method for preparing the ceramic shell is simple in process, easy to implement and convenient for industrial production; moreover, the color layer is combined with the transparent ceramic through the membrane and the adhesive layer, so that the diversity of the appearance colors of the ceramic shell can be improved, the appearance effects of various colors can be realized, the mechanical properties of the transparent ceramic cannot be influenced, and the better mechanical properties such as bending strength and the like of the ceramic shell can be effectively ensured; furthermore, the ceramic shell prepared by the method has better stability, and the color layer is not easy to fall off, so that the good appearance effect of the ceramic shell can be ensured for a long time.

Those skilled in the art can understand that the above method for preparing a ceramic housing can be used to prepare the ceramic housing described above, wherein the requirements for the specific materials and thicknesses of the color layer, the adhesive layer, the membrane, the transparent ceramic and other structures in the preparation method are the same as those of the ceramic housing described above, and are not described in detail herein.

In yet another aspect of the present application, an electronic device is provided. According to an embodiment of the present application, referring to fig. 6, an electronic device 1000 includes: the ceramic case 100 described above; the display screen assembly 200 is connected with the ceramic shell 100, and an installation space is defined between the display screen assembly 200 and the ceramic shell 100, wherein the color layer of the ceramic shell is arranged close to the installation space; and a main board (not shown in fig. 6) disposed in the installation space and electrically connected to the display screen assembly. Therefore, the ceramic shell of the electronic equipment has the appearance effect of multiple colors, the appearance color expressive force is better, the stability of the ceramic shell is better, and the color is not easy to fall off.

The specific type of the electronic device has no special requirement, and those skilled in the art can flexibly select the electronic device according to actual requirements, for example, the electronic device may be a mobile phone (as shown in fig. 6), an iPad, a notebook, or other electronic devices.

Examples

Example 1

Forming a gradient ink layer on the PET film through screen printing to obtain a decorative layer, wherein the thickness of the ink layer is 10 microns;

coating an OCA adhesive layer on the surface of the ink layer away from the PET film, wherein the thickness of the adhesive layer is 25 micrometers;

providing zirconia ceramics, wherein the light transmittance is 1.5%;

laminating the decorative layer to zirconia pottery's first surface through the glue film in sticking film machine on, obtain ceramic housing, structural diagram refers to fig. 2, and ceramic housing's outward appearance color is the colour on the printing ink layer of gradual change and zirconia pottery's compound colour, presents a dim color, and wherein, the laminating condition is: the pressure was 100N, the pressing time was 10s and the temperature was 55 ℃.

Example 2

The preparation method and the process of the ceramic shell of this embodiment are the same as those of embodiment 1, except that: the OCA glue layer is coated on the surface, far away from the ink layer, of the PET membrane, the structural schematic diagram is shown in fig. 1, the obtained appearance color of the ceramic shell is also a hazy color, and compared with the ceramic shell in the embodiment 1, the ceramic shell in the embodiment 1 is better and more obvious in color development effect.

Comparative example 1

The method and process for preparing the ceramic case of this comparative example were the same as in example 2, except that: the decorative layer still includes the reflectance coating, and the reflectance coating setting is between printing ink layer and PET diaphragm, sets up after the reflectance coating, and the colour on printing ink layer can't be in the apparent surface colour development of ceramic casing.

Comparative example 2

The preparation method and process of the ceramic shell of the comparative example are the same as those of comparative example 1, except that: the zirconia ceramics is replaced by glass, the appearance color of the glass shell is the color effect of the ink layer, and the appearance color effect is not hazy.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (9)

1. A ceramic shell, comprising:

a light-transmissive ceramic having a first surface, the light-transmissive ceramic having a light transmittance of greater than 1%;

a glue layer disposed on the first surface;

the decorative layer, the decorative layer setting is in the glue film is kept away from one side of printing opacity pottery, just the decorative layer includes:

a membrane;

a color layer disposed on one surface of the diaphragm.

2. The ceramic housing of claim 1, wherein the color layer is disposed on a surface of the diaphragm proximate to the first surface, the glue layer being disposed between the color layer and the first surface; or

The color layer is arranged on the surface of the first surface far away from the diaphragm, and the glue layer is arranged between the diaphragm and the first surface.

3. The ceramic shell of claim 1 or 2, wherein the color layer is at least one of an ink layer or a coating layer.

4. The ceramic shell as claimed in claim 3, wherein the thickness of the ink layer is 3 to 20 μm, and the thickness of the coating layer is 50 to 1000 nm.

5. The ceramic shell according to claim 1 or 2, wherein the membrane has a thickness of 50 to 100 μm.

6. The ceramic shell as claimed in claim 2, wherein the thickness of the glue layer is 25-50 μm.

7. The ceramic housing of claim 1, wherein the light-transmissive ceramic has a light transmission greater than 1% and less than or equal to 80%.

8. The ceramic shell of claim 2, wherein the ceramic shell is comprised of the structure:

the light-transmitting ceramic;

the adhesive layer;

the color layer is arranged on the surface, far away from the light-transmitting ceramic, of the adhesive layer;

the diaphragm is arranged on the surface of the color layer far away from the light-transmitting ceramic,

or

The light-transmitting ceramic;

the adhesive layer;

the membrane is arranged on the surface of the adhesive layer far away from the light-transmitting ceramic,

the color layer is arranged on the surface, far away from the light-transmitting ceramic, of the diaphragm.

9. An electronic device, comprising:

the ceramic shell of any one of claims 1 to 8;

the display screen assembly is connected with the ceramic shell, and an installation space is defined between the display screen assembly and the ceramic shell, wherein the color layer of the ceramic shell is arranged close to the installation space; and

the mainboard is arranged in the installation space and electrically connected with the display screen assembly.

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