CN109640563B

CN109640563B - Color ceramic, shell, preparation method of color ceramic and shell, and electronic equipment

Info

Publication number: CN109640563B
Application number: CN201910071256.4A
Authority: CN
Inventors: 贾玉虎
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2020-12-29
Anticipated expiration: 2039-01-25
Also published as: CN109640563A

Abstract

The invention provides a colored ceramic, a shell, a preparation method of the colored ceramic and the shell, and electronic equipment. The method comprises the following steps: and placing a plurality of ceramic modules in a matching way, and sintering the obtained product, wherein the colors of two adjacent ceramic modules are different. Therefore, the preparation method is simple and easy to operate, the process is mature, and the industrial production is easy to realize; in the preparation method, the ceramic modules with different colors are directly spliced together, so that the obtained colored ceramic is full in color, the boundaries among the different colors are clear, the strong color collision effect among the different colors can be realized, and the individuation of the colored ceramic is further improved; through sintering treatment, two adjacent ceramic modules can be tightly combined together, so that a plurality of ceramic modules form a whole, and the color ceramic with the color collision pattern is realized.

Description

Color ceramic, shell, preparation method of color ceramic and shell, and electronic equipment

Technical Field

The invention relates to the technical field of ceramics, in particular to a colored ceramic, a preparation method thereof, a shell and electronic equipment.

Background

In recent years, ceramics are favored for electronic devices because of their texture like jade and elegant connotation, and ceramics have superior mechanical and electrical properties compared to glass, but since ceramics have a much smaller transmittance than glass at the same thickness as glass, it is difficult for users to see the appearance of a striking color with a clear color boundary on the front side of ceramics when designing striking color patterns by spraying color ink or paint on the back side of white ceramics.

Therefore, research on the colored ceramics is awaited.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, it is an object of the present invention to provide a method for preparing a colored ceramic having a strong color impact effect.

In one aspect of the invention, there is provided a method of preparing the colored ceramic described above. According to an embodiment of the invention, the method comprises: the method comprises the steps of placing a plurality of ceramic modules in a matched mode, and sintering an obtained product, wherein the two adjacent ceramic modules are different in color. Therefore, the preparation method is simple and easy to operate, the process is mature, and the industrial production is easy to realize; moreover, in the preparation method, the ceramic modules with different colors are directly spliced together, so that the obtained colored ceramic is full in color, the boundaries among the different colors are clear, and the strong color collision effect among the different colors can be realized, therefore, compared with the scheme of spraying colored ink or paint on the back of the ceramic in the prior art, the technical scheme of the invention provides a more direct and stronger color collision visual effect for users, and further improves the individuation of the colored ceramic; moreover, through sintering treatment, two adjacent ceramic modules can be tightly combined together, so that a plurality of ceramic modules form a whole, and the color ceramic with the color collision pattern is realized.

In another aspect of the invention, the invention provides a colored ceramic. According to an embodiment of the present invention, the colored ceramic is prepared by the method described above. Therefore, the ceramic modules with different colors are directly spliced together to form the colored ceramic, so that the pattern color is fuller, the boundaries among the different colors are clear, and the strong color collision effect among the different colors can be realized.

In yet another aspect of the invention, a method of making a housing is provided. According to an embodiment of the invention, the method of preparing the housing comprises: comprising the method for preparing the colored ceramic. Therefore, the preparation method is simple and easy to operate, the process is mature, and the industrial production is easy to realize; moreover, the pattern color of the shell formed by the preparation method is fuller, the boundaries among different colors are clear, and the strong color collision effect among different colors can be realized, so that compared with the scheme of preparing the shell by spraying color ink or paint on the back surface of the ceramic in the prior art, the technical scheme of the invention provides a more direct and stronger color collision visual effect for a user, and further improves the individuation of the shell.

In yet another aspect of the present invention, a housing is provided. According to an embodiment of the present invention, the housing comprises the colored ceramic described above, or comprises the colored ceramic prepared by the method for preparing the colored ceramic described above, or is prepared by the method for preparing the housing described above. Therefore, the striking effect among different colors in the shell patterns is strong, strong visual impact is given to a user, and the individuation of the shell can be greatly improved.

In yet another aspect thereof, the present invention provides an electronic device. According to an embodiment of the invention, the electronic device comprises the housing as described above. Therefore, the electronic equipment has a personalized appearance, and can meet the requirement of users on bright ceramic appearance colors. Of course, those skilled in the art will appreciate that the electronic device has all the features and advantages of the colored ceramics and the housing, and the description thereof is omitted here.

Drawings

FIG. 1 is a schematic structural view of a colored ceramic according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a colored ceramic according to another embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a colored ceramic according to another embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a colored ceramic according to another embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a colored ceramic according to another embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a colored ceramic according to another embodiment of the present invention.

FIG. 7 is a schematic flow chart of the process for preparing a colored ceramic or shell according to another embodiment of the present invention.

FIG. 8 is a schematic flow chart of the process for preparing a colored ceramic or shell according to another embodiment of the present invention.

Fig. 9 is a schematic structural view of a housing according to another embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. 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. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

Referring to fig. 1 and 2, the specific distribution of colors of a plurality of ceramic modules is not limited, and a person skilled in the art can flexibly design according to actual requirements as long as the colors of two adjacent ceramic modules are different. In some embodiments of the present invention, the colors of all ceramic modules in a colored ceramic may be different (as shown in fig. 1), including a first color ceramic module 110, a second color ceramic module 120, a third color ceramic module 130, a fourth color ceramic module 140, and a fifth color ceramic module 150; in other embodiments of the present invention, the colors of several ceramic modules in a colored ceramic may be the same, as shown in fig. 2, including: the sixth color ceramic module 210, the seventh color ceramic module 220, the eighth color ceramic module 230, and the ninth color ceramic module 240, including, of course, eighth color ceramic modules 230 of the same color cannot be adjacently disposed.

It should be noted that, in fig. 1 to fig. 6, each filling pattern in each of the figures represents a color, that is, the same color of the ceramic modules with the same filling pattern in the same figure is the same, and the different colors of the ceramic modules with different filling patterns are different.

According to the embodiment of the present invention, the shape of the ceramic module is not limited, and the ceramic module may have a regular shape, such as a rectangle (as shown in fig. 1 and 2), a triangle (as shown in fig. 3, including a tenth color ceramic module 310, an eleventh color ceramic module 320, a twelfth color ceramic module 330, a thirteenth color ceramic module 340, a fourteenth color ceramic module 350, a fifteenth color ceramic module 360, and a sixteenth color ceramic module 370), a pentagon (as shown in fig. 4, including a seventeenth color ceramic module 410, an eighteenth color ceramic module 420, a nineteenth color ceramic module 430, a twentieth color ceramic module 440, a twenty-first color ceramic module 450, and a twenty-second color ceramic module 460), a hexagon (as shown in fig. 5, including a twenty-third color ceramic module 510, a twenty-fourth color ceramic module 520, and a twenty-second color ceramic module 460), and the like, A twenty-fifth color ceramic module 530, a twenty-sixth color ceramic module 540, a twenty-seventh color ceramic module 550, and a twenty-eighth color ceramic module 560), or concentric circles (as shown in fig. 6, wherein the centermost circle may be a solid circle, including: a twenty-ninth color ceramic module 610, a thirtieth color ceramic module 620, a thirty-first color ceramic module 630, a thirty-second color ceramic module 640); in other embodiments of the present invention, the ceramic modules may have irregular shapes (not shown), such as words, decorative patterns, etc., formed by splicing different ceramic modules, for example, various patterns including, but not limited to, LOGO patterns, letters, pentagons, etc. Of course, those skilled in the art will understand that in the same color ceramic, the shapes of the multiple ceramic modules may be the same, but the sizes of the different ceramic modules may be the same or different; the shapes of the ceramic modules may also be different in the same color ceramic, for example, a triangular ceramic module, a quadrangular ceramic module, a pentagonal ceramic module, and an irregular ceramic module may be included at the same time.

According to an embodiment of the present invention, a plurality of the ceramic modules are prepared by: and respectively carrying out tape casting on the ceramic slurry with different colors to form a plurality of ceramic slurry layers, and drying the ceramic slurry layers to obtain a plurality of ceramic modules.

According to an embodiment of the present invention, in order to reduce the splicing gap between different ceramic modules and obtain ceramic modules with different patterns, the step of forming a plurality of ceramic modules may further include: respectively carrying out tape casting on the ceramic slurry with different colors to form a plurality of ceramic slurry layers, drying the ceramic slurry layers, and then cutting a product obtained by drying to obtain a plurality of ceramic modules. Therefore, on one hand, the edges of the ceramic modules are trimmed by cutting, so that splicing gaps among different ceramic modules are further reduced, the integrity of the prepared colored ceramic or shell is improved, and a user looks like non-splicing formation; on the other hand, ceramic modules in different shapes are obtained by cutting, and color ceramics with different splicing patterns are prepared.

According to the embodiment of the invention, the specific steps and process parameters of the casting and drying are not limited, and the skilled person can flexibly design according to the specific conditions of the ceramic slurry and the like. In some embodiments of the present invention, the casting process comprises the following specific steps: respectively placing the ceramic slurry with different colors in a stirring and defoaming barrel, defoaming at low pressure, loading a clean PET (poly terephthalic acid plastic) film on a casting machine, and introducing the ceramic slurry into a casting machine; setting the flow speed of the casting machine to be 0.5-10 m/s, such as 0.5m/s, 1m/s, 2m/s, 3m/s, 4m/s, 5m/s, 6m/s, 7m/s, 8m/s, 9m/s or 10m/s, and the drying temperature is as follows: drying at 70-90 ℃, such as 70 ℃, 75 ℃, 80 ℃, 85 ℃ or 90 ℃, placing the PET film on a laminating machine, setting the cut pattern and size, separating the single-color ceramic module and the PET, and laminating and pre-pressing the single-color ceramic module under the pressure of: and (3) maintaining the pressure for 3-60 min at 30-60 MPa, and taking out for subsequent treatment.

According to an embodiment of the present invention, a method of forming a ceramic slurry includes: and respectively mixing the colored oxides with different colors with the ceramic powder organic solvent, the dispersing agent, the defoaming agent, the binding agent and the flatting agent so as to respectively obtain the ceramic slurry with different colors. Therefore, the method is simple, easy to operate and easy for industrial production.

According to an embodiment of the present invention, in order to prepare a ceramic slurry having superior performance, the ceramic slurry includes, based on the total mass of the ceramic slurry: 70-80% of ceramic powder, such as 70%, 72%, 74%, 76%, 78% or 80%; 0.1% to 5% of a dispersant, such as 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%; antifoam 0.1% to 5%, such as 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%; 0.5% to 5% binder, such as 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%; leveling agents 0.5% to 5%, such as 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%; a suitable amount of a colored oxide; the balance of a dispersing solvent. Therefore, the ceramic slurry obtained by the proportioning has good service performance, and the color ceramic and the shell prepared by the ceramic slurry have good mechanical properties, so that the good use experience of the ceramic is ensured.

According to the embodiment of the invention, in order to improve the performance of the prepared ceramic module, the viscosity of the ceramic slurry is 400 cp-2000 cp, such as 400cp, 500cp, 600cp, 700cp, 800cp, 900cp, 1000cp, 1100cp, 1200cp, 1300cp, 1400cp, 1500cp, 1600cp, 1700cp, 1800cp, 1900cp or 2000cp, the solid content is 44% -65%, such as 44%, 46%, 48%, 50%, 52%, 54%, 56%, 58%, 60%, 62%, 64% or 65%, and the thickness of the dried ceramic slurry layer is 0.01 mm-0.8 mm, such as 0.01mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm or 8 mm. Therefore, the proper viscosity can ensure that the thickness uniformity and the mechanical property of the ceramic module are improved when the ceramic module is prepared by adopting the tape casting process, and the viscosity is too high, the fluidity of ceramic slurry is poor, so that the improvement of the thickness uniformity of the ceramic module is relatively not facilitated, and the uniformity dispersion of ceramic powder is also relatively not facilitated; if the viscosity is too low, the fluidity of the ceramic slurry is too high, the control of the flowing of the ceramic slurry is inconvenient, the uniformity of the casting thickness and the thickness is difficult to ensure, and even the phenomenon that a PET film cannot be adhered occurs in casting. The ceramic module has better mechanical property and service performance due to proper solid content; if the solid content is lower, the prepared ceramic module cannot be ensured to have better mechanical property and service performance; if the solid content is higher, the uniformity and dispersion of the ceramic powder are relatively not facilitated. The thickness of the dried ceramic slurry layer in the range can ensure that the ceramic module can ensure good service performance of the ceramic module; if the thickness of the dried ceramic slurry layer is too thin, the ceramic module is likely to be broken, and the color ceramic or the shell is likely to be damaged by external collision in the using process; if the thickness of the dried ceramic slurry layer is too thick, the thickness of the prepared color ceramic or the prepared shell is thick, and when the color ceramic or the prepared shell is used for electronic equipment, the whole thickness of the electronic equipment is thick, which is not beneficial to the light and thin design of the electronic equipment.

According to the embodiment of the invention, the specific type of the ceramic powder has a limitation requirement, and a person skilled in the art can flexibly select the ceramic powder according to the actual situation. In embodiments of the present invention, specific types of ceramic powders include, but are not limited to, silicon nitride ceramic powder, silicon carbide ceramic powder, alumina ceramic powder, zirconia ceramic powder, and boron nitride ceramic powder. Therefore, the prepared colored ceramic or shell has better mechanical property and meets the application requirement of no use environment.

The specific type of the dispersing solvent is not limited according to the embodiment of the present invention, and those skilled in the art can flexibly select the dispersing solvent according to actual needs. In the embodiment of the present invention, the specific kind of the dispersion solvent includes, but is not limited to, at least one of toluene, isopropyl alcohol, and ethylene glycol. Therefore, the better dispersibility of the ceramic powder can be ensured.

The specific type of the dispersant according to the embodiment of the present invention is not limited, and those skilled in the art can flexibly select the dispersant according to actual needs. In some embodiments of the invention, a specific class of dispersants includes, but is not limited to, at least one of polyvinylpyrrolidone (PVP), polyethylene oxide (PEO), Sodium Alginate (SA), Polyethyleneimine (PEI), ammonium polyacrylate (PMAA-NH4), and polymethacrylic acid. Therefore, the dispersion uniformity of the ceramic powder in the ceramic slurry can be further improved.

According to the embodiment of the present invention, the specific type of the defoaming agent is not limited, and those skilled in the art can flexibly select the defoaming agent according to actual needs. In some embodiments of the present invention, specific classes of antifoaming agents include, but are not limited to, at least one of polyacrylic acid, silicone emulsion, higher alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether, and polydimethylsiloxane. Therefore, the foam in the ceramic slurry can be well eliminated, and the quality of the prepared ceramic module is improved.

The specific type of the adhesive is not limited according to the embodiment of the present invention, and those skilled in the art can flexibly select the adhesive according to actual needs. In some embodiments of the invention, the specific type of binder includes, but is not limited to, at least one of polyvinyl alcohol and calcium sulfate. Therefore, the performance and the quality of the ceramic module can be further improved.

According to the embodiment of the present invention, the specific kind of the leveling agent is not limited, and those skilled in the art can flexibly select the leveling agent according to actual needs. In some embodiments of the present invention, specific types of leveling agents include, but are not limited to, at least one of acrylates, polymethylphenylsiloxanes, and polydimethylsiloxanes. Therefore, the ceramic slurry layer can be ensured to form a flat, smooth and uniform ceramic module in the drying process.

The specific type of colored oxide is not limited according to the embodiment of the present invention, and those skilled in the art can select the corresponding colored oxide according to the desired color of the ceramic module, for example, erbium oxide, cuprous oxide or ferric oxide can be selected when preparing red ceramic module; when preparing a green ceramic module, nickel oxide or chromium oxide can be selected; when the blue ceramic module is prepared, vanadium pentoxide, ammonium metavanadate or neodymium oxide can be selected; when preparing the yellow ceramic module, samarium oxide, thulium oxide, tungsten oxide or cadmium sulfide can be selected. In the process of color mixing, the main color oxide is added, and other oxides are added as adjusting aids, for example, when red ceramic is prepared, erbium oxide, cuprous oxide and ferric oxide can adjust the red color intensity, and the color shift of red, such as reddish yellow or reddish blue, can be adjusted by adding the colored oxides of other colors.

According to the embodiment of the present invention, the amount of the colored oxide is not limited to a large amount, and those skilled in the art can flexibly design the colored oxide according to actual situations such as different colors and color depths, and the like, and the design is not limited herein. Of course, it can be understood by those skilled in the art that if the color of the desired ceramic module is consistent with the color of the ceramic powder, no colored oxide needs to be added, for example, if a white (or black) ceramic module is desired, a white (or black) ceramic powder can be directly selected, and no colored oxide needs to be added.

According to the embodiment of the present invention, the sintering temperature is 1250 ℃ to 1400 ℃, such as 1250 ℃, 1300 ℃, 1310 ℃, 1320 ℃, 1330 ℃, 1340 ℃, 1350 ℃, 1360 ℃, 1370 ℃, 1380 ℃, 1390 ℃ or 1400 ℃ in order to obtain the color ceramic with better performance. From this, can obtain the excellent colored pottery of compactness, also can further reduce the distance in concatenation gap between two adjacent ceramic module, improve the wholeness and the uniformity of a plurality of ceramic module in the colored pottery, and then promote colored pottery's quality.

According to an embodiment of the present invention, after the placing and before the sintering, in order to obtain the colored ceramics with different structures, the method further includes: and carrying out molding treatment on the product obtained by placing.

According to an embodiment of the present invention, in order to improve the performance and quality of the colored ceramic, the forming process is selected from dry pressing or hot isostatic pressing. Therefore, the forming process is mature and easy to operate and implement, and through the forming treatment, the performance and the quality of the colored ceramics or the shell can be improved, and the colored ceramics or the shell with different structures can be obtained, such as the colored ceramics with a 2D structure (a plane structure), a 2.5D structure (a pseudo three-dimensional structure) or a 3D structure (a three-dimensional structure).

According to an embodiment of the present invention, in order to improve the quality of the prepared colored ceramic, after the forming process and before the sintering process, the method further includes: and (b) performing a degumming treatment on the molded product, wherein the degumming treatment temperature is 150-300 ℃, such as 150 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃, 220 ℃, 230 ℃, 240 ℃, 250 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃ or 300 ℃. Therefore, volatile organic substances in the ceramic module can be oxidized and discharged partially in advance, and the phenomenon that the colored ceramic is cracked due to the fact that a large amount of organic substances are volatilized in the high-temperature sintering process is prevented. The organic substance refers to various organic agents added previously, such as a dispersing solvent, a dispersing agent, a binder, a leveling agent, or an antifoaming agent.

According to the embodiment of the invention, the concrete method for discharging the glue can be as follows: and (3) placing the formed product in a glue discharging furnace or a glue discharging box, and introducing air or nitrogen to volatilize or burn organic matters in the formed ceramic module.

According to some embodiments of the present invention, referring to fig. 7 and 8, a method of preparing a colored ceramic includes:

s10: respectively mixing the colored oxides with different colors with a ceramic powder organic solvent, a dispersing agent, a defoaming agent, a binding agent and a flatting agent so as to respectively obtain ceramic slurry with different colors;

s21: respectively carrying out tape casting on the ceramic slurry with different colors to form a plurality of ceramic slurry layers, and drying the ceramic slurry layers to obtain a plurality of ceramic modules; or S22: respectively carrying out tape casting on the ceramic slurry with different colors to form a plurality of ceramic slurry layers, drying the ceramic slurry layers, and then cutting a product obtained by drying to obtain a plurality of ceramic modules;

s30: placing a plurality of ceramic modules in a matching way;

s40: molding the product obtained by placing;

s50: performing glue discharging treatment on the formed product;

s60: and sintering the product after the binder removal treatment so as to obtain the colored ceramic.

According to the embodiment of the invention, the colored ceramic prepared by the method has the advantages of good performance, diversified structure, full color of the colored ceramic, clear and distinct boundaries among different colors, strong color collision effect among different colors, more direct and stronger visual impact on a user, and further improvement on the individuation of the colored ceramic.

According to the embodiment of the invention, in order to meet the use requirement of the color ceramic or the shell, after the sintering, at least one of the following steps is further included: grinding and polishing the color ceramics; trimming and perforating the colored ceramics; a high-transmittance anti-fingerprint film (AF film) is formed on the surface of the colored ceramic. Those skilled in the art will understand that the above three steps can be included simultaneously, for example, when the color ceramic is used for a rear cover of an electronic device, the color ceramic needs to be polished to improve the aesthetic property and surface smoothness of the electronic device; in order to realize some functional requirements (such as a camera), the color ceramics are required to be trimmed and perforated; in order to prevent fingerprints from remaining on the surface of the electronic equipment and affecting the appearance of the electronic equipment, an AF film can be plated on the surface of the colored ceramic.

In another aspect of the invention, the invention provides a colored ceramic. According to an embodiment of the present invention, the ceramic module is prepared by the preparation method described above. Therefore, the ceramic modules with different colors are directly spliced together to form the colored ceramic, so that the pattern color is fuller, the boundaries among the different colors are clear, and the strong color collision effect among the different colors can be realized.

According to an embodiment of the present invention, in order to meet different application requirements, the structure of the colored ceramic is a planar structure (2D), a pseudo three-dimensional structure (2.5D), or a three-dimensional structure (3D). Therefore, the structure of the color ceramic can be flexibly designed by the technical personnel in the field according to the use requirement of the color ceramic, and the diversified requirements of the market are met.

In yet another aspect of the present invention, a housing is provided. According to an embodiment of the present invention, the housing comprises the colored ceramic as recited in the preceding paragraph, or comprises the colored ceramic prepared by the method for preparing the colored ceramic as recited in the preceding paragraph, or is prepared by the method for preparing the housing as recited in the preceding paragraph. Therefore, the striking effect among different colors in the shell patterns is strong, strong visual impact is given to a user, and the individuation of the shell can be greatly improved. Of course, those skilled in the art will appreciate that the housing has all of the features and advantages previously described and will not be described in any further detail herein.

According to the embodiment of the invention, the housing may be formed by the colored ceramics entirely or partially, and those skilled in the art may design flexibly according to the user's needs without limitation. In some embodiments of the present invention, the housing 1000 is formed by the color ceramic, and the schematic structural diagram refers to fig. 9 (including the thirty-third color ceramic module 910, the thirty-fourth color ceramic module 920, the thirty-fifth color ceramic module 930, the thirty-sixth color ceramic module 940, the thirty-seventh color ceramic module 950, the thirty-eighth color ceramic module 960, the thirty-ninth color ceramic module 970, the forty-fourth color ceramic module 980 and the forty-first color ceramic module 990), although those skilled in the art may open holes at appropriate places to meet the use requirement of the housing, and the holes are not shown in the drawings.

According to the embodiment of the invention, the specific type of the electronic device is not limited, and those skilled in the art can flexibly select the electronic device according to actual needs. In some embodiments of the present invention, specific types of electronic devices include, but are not limited to, mobile phones, notebooks, game machines, and other electronic devices.

Of course, it can be understood by those skilled in the art that the electronic device includes, in addition to the housing, the structure or component necessary for the conventional electronic device, and taking a mobile phone as an example, the mobile phone further includes, in addition to the housing, the structure or component necessary for the display panel, the glass cover plate, the CPU processor, the camera module, the voice module, the touch module, and the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

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

Claims

1. A method of making a colored ceramic, comprising:

a plurality of ceramic modules are spliced and matched, and the obtained product is sintered so as to obtain the colored ceramic with the contrast patterns, wherein the colors of the two adjacent ceramic modules are different,

wherein a plurality of the ceramic modules are prepared by the following steps:

respectively casting ceramic slurry with different colors to form a plurality of ceramic slurry layers, drying the ceramic slurry layers to obtain a plurality of ceramic modules,

wherein the method of forming the ceramic slurry comprises:

mixing colored oxides with different colors with a ceramic powder organic solvent, a dispersing agent, a defoaming agent, a binder and a flatting agent respectively so as to obtain the ceramic slurry with different colors respectively, wherein the ceramic slurry comprises the following components in percentage by mass based on the total mass of the ceramic slurry:

a suitable amount of a colored oxide;

the balance of a dispersing solvent.

2. The method of claim 1, wherein a plurality of the ceramic modules are prepared by: respectively carrying out tape casting on the ceramic slurry with different colors to form a plurality of ceramic slurry layers, drying the ceramic slurry layers, and cutting a product obtained by drying to obtain a plurality of ceramic modules.

3. The method of claim 1, further comprising, after said placing and before said sintering:

and carrying out molding treatment on the product obtained by placing.

4. The method according to claim 1, wherein the ceramic slurry has a viscosity of 400-2000 cp, a solid content of 44-65%, and a thickness of 0.01-0.8 mm after drying.

5. The method of claim 3, wherein the forming process is selected from dry pressing or hot isostatic pressing.

6. The method according to claim 1, wherein the temperature of the sintering process is 1250 ℃ to 1400 ℃.

7. The method according to claim 3, further comprising a step of binder removal after the molding process and before the sintering process, wherein the temperature of the binder removal is 150 ℃ to 300 ℃.

8. The method of claim 1, further comprising, after the sintering process, at least one of:

grinding and polishing the color ceramics or the shell;

trimming and opening holes on the colored ceramics or the shell;

and forming a high-transmittance anti-fingerprint film on the surface of the colored ceramic or the shell.

9. The method of claim 1, wherein the shape of the ceramic module comprises at least one of a triangle, a quadrilateral, a pentagon, a hexagon, a circle, a semicircle, an ellipse, and an irregular polygon.

10. A colored ceramic, which is produced by the method according to any one of claims 1 to 9.

11. The colored ceramic of claim 10, wherein the colored ceramic is a planar structure, a pseudo three-dimensional structure, or a three-dimensional structure.

12. A method for producing a housing, comprising the method for producing the colored ceramic according to any one of claims 1 to 9.

13. A housing comprising the colored ceramic of any one of claims 10 to 11, or comprising the colored ceramic produced by the method of any one of claims 1 to 9, or produced by the method of claim 12.

14. An electronic device characterized by comprising the housing of claim 13.