WO2023142727A1 - Ceramic housing, preparation method therefor, and electronic device - Google Patents

Abstract

The present invention provides a ceramic housing, a preparation method therefor, and an electronic device. The ceramic housing has a rough surface, the rough surface comprises a patterned area, the patterned area is provided with a texture pattern, and the texture pattern presents a structural color. The ceramic housing has a color flash effect, and the color of said housing does not easily fade.

Description

Ceramic shell, its preparation method and electronic device technical field

The present application relates to the field of electronics, in particular to a ceramic shell, its preparation method and electronic equipment.

Background technique

With the development of communication technology, mobile terminals such as mobile phones and tablet computers have become indispensable tools for people. When faced with a wide range of mobile terminal products, consumers not only need to consider whether the functions of the products meet their own needs, but also the appearance of the products is one of the important factors that determine whether consumers choose or not. However, with the iteration of mobile terminals, the appearance of mobile terminals of various brands tends to be homogenized gradually, and the appearance recognition is poor. Ceramics have a warm feel and high-gloss texture. Therefore, they are often used in appearance structural parts such as ceramic casings, middle frames, and decorative parts of high-end electronic equipment. However, its appearance is still relatively simple.

Contents of the invention

The embodiment of the first aspect of the present application provides a ceramic casing, the ceramic casing has a rough surface, the rough surface includes a patterned area, the patterned area has a texture pattern, and the texture pattern exhibits a structural color.

The embodiment of the second aspect of the present application provides a method for preparing a ceramic shell, which includes:

providing a ceramic housing substrate having a surface to be treated;

Sandblasting the surface to be treated to obtain an intermediate rough surface; and

The intermediate state rough surface is patterned to obtain a rough surface, the rough surface has a patterned area, the upper patterned area has a texture pattern, and the texture pattern presents a structural color.

The embodiment of the third aspect of the present application provides an electronic device, which includes:

display components;

The ceramic housing described in the embodiment of the present application, the ceramic housing is arranged on one side of the display assembly; and

A circuit board assembly, the circuit board assembly is arranged between the ceramic casing and the display assembly, and is electrically connected to the display assembly, and is used to control the display assembly to display.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic diagram of a three-dimensional structure of a ceramic housing according to an embodiment of the present application.

FIG. 2 is a schematic cross-sectional structure diagram of a ceramic housing according to an embodiment of the present application along the direction A-A in FIG. 1 .

FIG. 3 is a topographic view of a patterned area of a ceramic shell according to an embodiment of the present application.

FIG. 4 is a schematic structural diagram of a texture pattern according to an embodiment of the present application.

FIG. 5 is an enlarged view of the dashed box I in FIG. 2 .

FIG. 6 is a schematic structural diagram of a patterned region according to an embodiment of the present application.

FIG. 7 is a topography diagram of a patterned area according to an embodiment of the present application.

FIG. 8 is a schematic flowchart of a method for preparing a ceramic shell according to an embodiment of the present application.

FIG. 9 is a schematic structural diagram of a preparation process of a ceramic shell according to an embodiment of the present application.

FIG. 10 is a schematic flowchart of a method for preparing a ceramic housing base material according to an embodiment of the present application.

FIG. 11 is a schematic flowchart of a method for preparing a ceramic shell substrate according to another embodiment of the present application.

FIG. 12 is a topography diagram of an intermediate rough surface according to an embodiment of the present application.

Fig. 13 is a 1000 times magnified topography view of a rough surface according to an embodiment of the present application.

Fig. 14 is a 3000 times magnified topography view of a rough surface according to an embodiment of the present application.

Fig. 15 is a topography diagram of ceramic grains in a ceramic section.

Fig. 16 is a topography diagram of laser engraving on high-gloss ceramics.

Fig. 17 is a schematic flow chart of laser engraving according to an embodiment of the present application.

Fig. 18 is a schematic structural diagram of the preparation process of a ceramic shell according to another embodiment of the present application.

FIG. 19 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

FIG. 20 is a circuit block diagram of an electronic device according to an embodiment of the present application.

Fig. 21 is a schematic diagram of a partial exploded structure of an electronic device according to an embodiment of the present application.

Fig. 22 is a circuit block diagram of an electronic device according to yet another embodiment of the present application.

Explanation of reference signs:

100-ceramic shell, 10-rough surface, 11-patterned area, 13-non-patterned area, 131-raised structure, 15-textured pattern, 151-textured part, 1511-curved texture, 152-first Texture lines, 154-second texture lines, 100'-ceramic housing substrate, 10'-surface to be treated, 10a-intermediate rough surface, 400-electronic equipment, 410-display components, 420-middle frame, 430- Circuit board assembly, 431-processor, 433-memory, 450-camera module, 101-light transmission part.

Detailed ways

The first aspect of the present application provides a ceramic casing, the ceramic casing has a rough surface, the rough surface includes a patterned area, the patterned area has a texture pattern, and the texture pattern exhibits a structural color.

Wherein, the texture pattern includes a plurality of textured parts, the textured part is a linear concave structure, the bottom wall of the textured part has a plurality of arc-shaped textures, and the plurality of arc-shaped textures are along the The extension directions of the plurality of arc-shaped textures are arranged in sequence, the openings of the plurality of arc-shaped textures have the same orientation, and the curvatures of at least some of the arc-shaped textures in the plurality of arc-shaped textures are equal.

Wherein, the range of the shortest distance w1 of the orthographic projection of the textured portion on the rough surface of the ceramic housing is 10 μm≤w1≤100 μm.

Wherein, along the direction perpendicular to the rough surface, the depth h1 of the textured part is in the range of 1 μm≤h1≤50 μm.

Wherein, the texture part includes a plurality of point-shaped textures, the plurality of point-shaped textures are arranged in sequence, and any two adjacent point-shaped textures are partially overlapped to form a structure with a plurality of arc-shaped textures arranged in sequence .

Wherein, the range of roughness Ra1 of the patterned area is 0.05 μm≤Ra1≤1.0 μm; the range of gloss G1 of the patterned area is 3Gu≤G1≤30Gu.

Wherein, the rough surface also includes a non-patterned area, and the non-patterned area is connected to the patterned area; the roughness Ra1 of the patterned area is greater than the roughness Ra2 of the non-patterned area, and the patterned area The gloss G1 of the region is greater than the gloss G2 of the non-patterned region; the range of the roughness Ra2 of the non-patterned region is 0.04 μm≤Ra2≤0.8 μm; the range of the gloss G2 of the non-patterned region is 2.0 Gu≤G2≤20Gu.

Wherein, the range of roughness Ra1 of the patterned area is 0.6μm≤Ra1≤0.8μm; the range of gloss G1 of the patterned area is 3.5Gu≤G1≤8.5Gu; the roughness of the non-patterned area The range of the degree Ra2 is 0.2 μm≤Ra2≤0.6 μm; the range of the gloss G2 of the non-patterned area is 2.0Gu≤G2≤6.5Gu.

Wherein, the non-patterned region has a plurality of raised structures, and along the direction perpendicular to the rough surface, the maximum height h2 of the raised structures is in the range of 10 μm≤h2≤23 μm, and the raised structures are in the The range of the maximum distance w2 of the orthographic projection of the rough surface is 4 μm≤w2≤28 μm.

Wherein, the texture pattern includes a plurality of first texture lines and a plurality of second texture lines, the plurality of first texture lines are parallel to each other, the plurality of first texture lines extend along the first direction, and extend along the second direction. Arranged, the line width of the first texture lines is 60 μm to 80 μm, and the distance between any two adjacent first texture lines is 60 μm to 80 μm; the plurality of second texture lines are parallel to each other, and the plurality of first texture lines The two texture lines extend along the second direction and are arranged along the second direction. The line width of the second texture lines is 60 μm to 80 μm, and the distance between any two adjacent second texture lines is 60 μm to 80 μm.

The second aspect of the present application provides a method for preparing a ceramic housing, which includes:

providing a ceramic housing substrate having a surface to be treated;

Sandblasting the surface to be treated to obtain an intermediate rough surface; and

The intermediate state rough surface is patterned to obtain a rough surface, the rough surface has a patterned area, the upper patterned area has a texture pattern, and the texture pattern presents a structural color.

Wherein, the said surface to be treated is subjected to sandblasting to obtain an intermediate rough surface, including:

Using sand grains with a mesh number of 100 mesh to 5000 mesh and a sandblasting pressure ranging from 0.1 MPa to 10 MPa, sandblasting is performed on the surface to be treated to obtain an intermediate rough surface.

Wherein, the mesh number of the sand particles is 800 mesh to 1500 mesh, and the sandblasting pressure ranges from 0.6 MPa to 1.2 MPa.

Wherein, the sand grains include at least one of SiC sand, corundum sand, zirconia sand, and quartz sand, and the shape of the sand grains includes at least one of spherical shape and pyramid shape.

Wherein, when performing sandblasting, the vertical distance between the nozzle and the surface to be treated is in the range of 10 cm to 50 cm.

Wherein, the patterning of the intermediate state rough surface to obtain a rough surface includes:

Laser engraving is carried out on the intermediate state rough surface by using an infrared nanosecond laser with a wavelength of 1000nm to 1300nm to form a texture pattern on the intermediate state rough surface to obtain a rough surface.

Wherein, the spot diameter of the infrared nanosecond laser ranges from 60 μm to 80 μm.

Among them, the laser engraving speed ranges from 800mm/s to 1500mm/s, the laser engraving frequency ranges from 40KHz to 300KHz, and the laser engraving output power ranges from 6W to 24W.

Wherein, the preparation method also includes:

Annealing is performed at 750°C to 850°C.

The third aspect of the present application provides an electronic device, which includes:

display components;

A ceramic casing, the ceramic casing is arranged on one side of the display assembly, the ceramic casing has a rough surface, the rough surface includes a patterned area, the patterned area has a texture pattern, and the texture pattern exhibit structural color; and

A circuit board assembly, the circuit board assembly is arranged between the ceramic casing and the display assembly, and is electrically connected to the display assembly, and is used to control the display assembly to display.

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or devices.

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

It should be noted that, for ease of description, in the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, detailed descriptions of the same components are omitted.

In order to make the surface of the ceramic shell have a matte effect, a matte glaze may be applied on the surface of the ceramic shell. After the glaze is sintered, the surface undergoes microcrystallization, thereby forming a matte ceramic shell. However, the hardness of the glaze is much lower than that of the ceramic shell, which greatly reduces the scratch resistance of the ceramic shell.

In addition, laser radium engraving can also be used on the high-gloss ceramic shell, and the surface of the ceramic product can be lasered twice to form a matte surface on the surface of the ceramic shell, so that the surface of the ceramic shell has a matte effect. However, the matte surface formed by this method forms dense radium engraving marks, and the level difference between the smooth surface and the radium engraving position is large, and the hand feels jerky.

In addition, the surface of the high-gloss ceramic shell can also be sandblasted with sandblasting equipment to form a matte ceramic shell, but the surface of the matte ceramic shell obtained by sandblasting is dull, which affects the visual effect of the ceramic shell.

In view of this, the embodiment of the present application provides a ceramic housing 100. The ceramic housing 100 of the present application can be applied to mobile phones, tablet computers, notebook computers, desktop computers, smart bracelets, smart watches, e-readers, game consoles, etc. Portable Electronic Devices. The ceramic housing 100 in the embodiment of the present application may have a 2D structure, a 2.5D structure, a 3D structure, and the like. The ceramic housing 100 of the present application may be a middle frame, a rear cover (battery cover), a decoration, etc. of an electronic device. In the following embodiments of the present application, the ceramic housing 100 is described in detail by taking the back cover of a mobile phone as an example, which should not be construed as a limitation to the ceramic housing 100 of the present application.

Please refer to FIG. 1 to FIG. 3 , the embodiment of the present application provides a ceramic housing 100, the ceramic housing 100 has a rough surface 10, the rough surface 10 includes a patterned area 11, and the patterned area 11 has a texture Pattern 15, the texture pattern 15 presents a structural color.

The ceramic housing 100 has a rough surface 10, which may be that all surfaces of the ceramic housing 100 are rough surfaces 10; it may also be that one or more surfaces of the ceramic housing 100 are rough surfaces 10; it may also be that, Part of one surface of the ceramic housing 100 is a rough surface 10 .

The rough surface 10 includes a patterned area 11, which can be the patterned area 11 for the entire rough surface 10; or a part of the surface of the rough surface 10 can be the patterned area 11, that is to say, at this time, the rough surface 10 Another part of the surface does not have the textured pattern 15 .

Optionally, the texture pattern 15 may be, but not limited to, texture lines arranged in parallel, animal patterns, flower patterns and the like. The pattern and type of the texture pattern 15 can be designed according to the desired visual effect. The specification and drawings of the present application are only a representation of a part of the texture pattern 15, and should not be interpreted as a reference to the ceramic housing 100 of the embodiment of the present application. limited.

"Structural Colour", also known as Physical Colour, is a luster caused by the wavelength of light. The fine structure of the texture pattern 15 causes light waves to refract, diffusely reflect, diffract or interfere to produce various colors.

The structural color includes at least one of red, orange, yellow, green, blue, cyan, purple and other colors. In a specific embodiment, the structural colors are rainbow colors.

The ceramic housing 100 in the embodiment of the present application has a rough surface 10 , so that the surface of the ceramic housing 100 has a matte effect, and can also prevent fingerprints from remaining on the surface of the ceramic housing 100 , thus having an anti-fingerprint effect. In addition, the rough surface 10 includes a patterned area 11, the patterned area 11 has a textured pattern 15, the textured pattern 15 presents a structural color, the textured pattern 15 exposes the ceramic grains of the rough surface 10, and the ceramic grain boundary and the horizontal plane are in the shape of At a certain angle, when the light passes through the ceramic grain boundary and the surface of the ceramic grain, there is an optical path difference, forming a diffraction effect, thereby forming a colored flash point, so that the texture pattern 15 on the ceramic shell 100 presents a colored flash. Thus, the ceramic housing 100 not only has a matte effect, but also has a colored low-shimmer effect. Furthermore, compared with the texture pattern 15 formed on the smooth surface, the texture pattern 15 of the present application is formed on the rough surface, which can better weaken the level difference of the texture pattern 15 area, so that the obtained ceramic shell 100 has better In addition, the visible angle between the texture pattern 15 and the colorful flash obtained on the glossy surface is limited. The texture pattern 15 of the present application is formed on the rough surface, so that the ceramic shell 100 can see the flash in all directions. Moreover, the color of the textured pattern 15 is due to the structure of the textured pattern 15 which can be seen by the naked eye as color flashes, so even after a long period of use, no fading phenomenon will occur.

The term "ceramic grain boundary" refers to the contact area of differently oriented ceramic grains in a material.

Optionally, the ceramic housing 100 may include ceramic material; the ceramic housing may also include ceramic material and thermoplastic resin. In other words, the ceramic shell 100 can be a ceramic shell formed by sintering ceramic materials; it can also be a nano-alloy ceramic ceramic shell 100 composed of ceramic material and thermoplastic resin. When the ceramic shell 100 only includes ceramic materials, its hardness is higher, and when the ceramic shell 100 is a nano-alloy ceramic ceramic shell 100, its preparation process requirements are relatively low (no high temperature sintering is required).

Optionally, the thickness of the ceramic housing 100 is 0.3 mm to 1 mm; specifically, the thickness of the ceramic housing 100 can be but not limited to 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1mm, etc. When the ceramic housing 100 is too thin, it cannot play a supporting and protective role well, and the mechanical strength cannot well meet the requirements of the ceramic housing 100 of electronic equipment. When the ceramic housing 100 is too thick, it will increase the electronic The weight of the device affects the feel of the electronic device and the user experience is not good.

In the embodiments of the present application, when it comes to the numerical range a to b, unless otherwise specified, it means that the endpoint value a is included, and the endpoint value b is included. For example, the thickness of the above-mentioned ceramic housing 100 is 0.3 mm to 1 mm, which means that the thickness of the ceramic housing 100 can be any value between 0.3 mm and 1 mm, including the endpoint 0.3 mm and the endpoint 1 mm.

Optionally, the raw material components of the ceramic shell 100 may include ceramic powder. Optionally, the ceramic powder includes zirconia, alumina, silicon dioxide, titanium dioxide, silicon nitride, magnesium oxide, chromium oxide, beryllium oxide, vanadium pentoxide, boron trioxide, spinel, oxide At least one of zinc, calcium oxide, mullite, and barium titanate. In a specific embodiment, the ceramic powder is zirconia powder, and the ceramic shell 100 is a zirconia ceramic shell 100 .

In some embodiments, the raw material components of the ceramic housing 100 further include a binder. Optionally, the binder is at least one of epoxy binder and polyether binder. It should be noted that the decomposition or volatilization temperature of the binder is lower than the temperature during debinding, so that the binder can be completely eliminated through decomposition or volatilization during debinding, so as to avoid the residue of the binder, so that in the sintered During the process, holes remain on the ceramic housing 100 , reducing the mechanical strength of the formed ceramic housing 100 and affecting the appearance of the ceramic housing 100 . Optionally, in the raw material components of the ceramic housing 100 , the weight percentage of the binder ranges from 3% to 5%. Specifically, the weight percentage of the binder may be, but not limited to, 3%, 3.5%, 4%, 4.5%, 5% and so on. If the content of the binder is too small, the ceramic green body does not need to be molded during molding. If the content of the binder is too much, then when the ceramic green body is debinding, it needs a longer debinding time. During the debinding time, it is easy to leave pores in the prepared ceramic shell 100, which will affect the mechanical properties of the ceramic shell 100. performance and appearance. When the weight percentage of the binder is between 3% and 5%, the ceramic green body can be molded better, and the debinding time can be more suitable, so as to avoid residual air bubbles in the prepared ceramic shell 100 .

In some embodiments, the raw material components of the ceramic shell 100 further include a dispersant, and the dispersant is used for more uniform mixing of the binder and the ceramic powder, and the mixed system is more stable after mixing. The dispersant can be, but not limited to, liquid paraffin and the like. In the raw material components of the ceramic housing 100, the weight percentage of the dispersant ranges from 1% to 5%, specifically, but not limited to 1%, 2%, 3%, 4%, 5% wait. It should be noted that the decomposition or volatilization temperature of the dispersant is lower than the temperature during debinding, so that the dispersant can be completely eliminated through decomposition or volatilization during debinding, so as to avoid the residue of the dispersant, so that during the sintering process, Holes remain on the ceramic case 100 , reducing the mechanical strength of the formed ceramic case 100 and affecting the appearance of the ceramic case 100 .

In some embodiments, the raw material components of the ceramic shell 100 further include colorants. The coloring material is used to make the ceramic casing 100 have a color pattern or color, so that the ceramic casing 100 has a color pattern or color, such as the pattern and color of blue and white porcelain. By controlling the color and proportion of the coloring material, the ceramic casing 100 can have different appearance effects, so that the ceramic casing 100 can have different appearance effects. Alternatively, the colorant may be an inorganic colorant. Optionally, the inorganic pigment can be but not limited to iron oxide, cobalt oxide, manganese oxide and the like. In the raw material components of the ceramic housing 100, the weight percentage of the coloring material ranges from 3% to 10%, specifically, it can be but not limited to 3%, 4%, 5%, 6%, 7% , 8%, 9%, 10%, etc.

In some embodiments, when the ceramic housing 100 is a nano-alloy ceramic ceramic housing 100, the original components of the ceramic housing 100 also include a thermoplastic resin, and the thermoplastic resin may be, but not limited to, polyphenylene sulfide. At least one of ether, polysulfone, polyethersulfone, polyetherketone, polycarbonate, polyamide, polymethylmethacrylate, and the like. The nano-alloy ceramic ceramic shell 100 can be formed into a green body by casting, injection molding, molding, etc., and then heat-treated, warm isostatic pressing, etc., to obtain the nano-alloy porcelain ceramic shell 100 .

Optionally, the ceramic housing 100 has at least one color. Further, the ceramic housing 100 has at least two colors. Specifically, the ceramic housing 100 may have 1 type, 2 types, 3 types, 4 types, 5 types, 6 types, 7 types, 8 types, and so on. In this way, the ceramic case 100 can have a color pattern. Optionally, the ceramic housing 100 may have at least one of red, white, gray, blue, orange, yellow, green, purple, pink and the like. It should be noted that the color of the ceramic housing 100 described here is due to the addition of coloring material, so that the color of the ceramic housing 100 is different from the structural color presented by the above texture pattern. Even if the ceramic casing 100 of the present application is a transparent ceramic casing (without adding coloring material) or a light-colored color such as white, in the case of the structure of the texture pattern 15 of the embodiment of the application, it can also present a color low flicker light effect.

Optionally, the range of the average particle size d of the ceramic powder is 0.2 μm≤d≤0.8 μm. Specifically, the average particle size of the ceramic powder may be, but not limited to, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm. The particle size of the ceramic powder is too small, which increases the difficulty of preparation, thereby increasing the cost. When the particle size of the ceramic powder is as small as nanometers, the ceramic powder is easy to agglomerate to form large particles, which will reduce the ceramic shell 100 produced. Mechanical strength: when the particle size of the ceramic powder is too large, for example greater than 0.8 μm, gaps and air bubbles are likely to remain during green molding, and the mechanical strength of the prepared ceramic shell 100 will also be reduced. Therefore, when the particle size of the ceramic powder ranges from 0.2 μm to 0.8 μm, the prepared ceramic shell 100 can not only have better mechanical strength, but also have lower manufacturing cost. "Average particle size" refers to the average value of all particle sizes of the ceramic powder.

Optionally, the Vickers hardness of the ceramic housing 100 of the present application may be, but not limited to, 1200HV to 1400HV. Specifically, it may be, but not limited to, 1200HV, 1230HV, 1250HV, 1280HV, 1300HV, 1320HV, 1350HV, 1380HV, 1400HV, etc. The higher the Vickers hardness of the ceramic case 100 is, the higher the hardness of the obtained ceramic case 100 is.

In some embodiments, the rough surface 10 is all patterned, in other words, the rough surface 10 only includes the patterned area 11 . In some other embodiments, the rough surface 10 further includes a non-patterned region 13 , and the non-patterned region 13 is connected to the patterned region 11 , that is, the rough surface 10 includes the patterned region 11 and the non-patterned region 13 .

In some embodiments, since the patterned region 11 is formed after the texture pattern 15 is formed after laser engraving on the basis of the surface microstructure of the non-patterned region 13, the roughness Ra1 of the patterned region 11 is greater than that of the non-patterned region 11. The roughness Ra2 of the chemical region 13. After laser engraving, the ceramic grains of the ceramics are exposed, and the ceramic grain boundaries form a certain angle with the horizontal plane. When the light passes through the ceramic grain boundaries and the surface of the ceramic grains, there is an optical path difference, which forms a diffraction effect. Therefore, the patterned area 11 The gloss G1 of the non-patterned area 13 is greater than the gloss G2 of the non-patterned area 13 .

Optionally, the range of roughness Ra1 of the patterned region 11 is 0.05 μm≦Ra1≦1.0 μm. Further, the range of roughness Ra1 of the patterned region 11 is 0.6 μm≦Ra1≦0.8 μm. Specifically, the roughness Ra1 of the patterned region 11 may be, but not limited to, 0.05 μm, 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, 1.0 μm etc. If the roughness of the patterned area 11 is too small, such as less than 0.05 μm, the patterned area 11 will have a high-gloss mirror effect and cannot form a low flicker effect; if the roughness of the patterned area 11 is too high, the hand-held touch It is not good, and it is easy to collect dirt and dirt on the surface of the patterned area 11, which is not conducive to cleaning. In addition, the roughness is too large, and it is difficult to show a flashing effect.

Optionally, the range of the gloss G1 of the patterned area 11 is 3Gu≤G1≤30Gu (60° angle test). Further, the range of gloss G1 of the patterned area 11 is 3.5Gu≤G1≤8.5Gu. Specifically, the gloss G1 of the patterned region 11 may be, but not limited to, 3Gu, 5Gu, 8Gu, 10Gu, 15Gu, 17Gu, 20Gu, 23Gu, 25Gu, 28Gu, 30Gu and the like. When the glossiness of the patterned region 11 is lower than 3Gu, the surface of the obtained ceramic casing 100 is dull and dull, which affects the visual effect of the ceramic casing 100; when the glossiness of the patterned region 11 is greater than 30Gu, the glossiness If the value is too high, it is not conducive to forming a low-shine color texture on the surface of the ceramic housing 100 . When the average glossiness of the rough surface 10 is within this range, the ceramic housing 100 can form a matte and low-shiny color texture pattern 15 while having a certain glossiness, thereby having better texture and texture. Visual effect.

Optionally, the range of roughness Ra2 of the non-patterned region 13 is 0.04 μm≤Ra2≤0.8 μm; in other words, the range of roughness Ra2 of the surface before patterning treatment is 0.04 μm≤Ra2≤0.8 μm. Further, the range of roughness Ra2 of the non-patterned region 13 is 0.2 μm≤Ra2≤0.6 μm. Specifically, the roughness Ra2 of the non-patterned region 13 may be, but not limited to, 0.04 μm, 0.08 μm, 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm. If the roughness of the non-patterned area 13 is too small, such as lower than 0.04 μm, the non-patterned area 13 will have a high-gloss mirror effect, and after laser engraving is performed to form the patterned area 11, a low flicker effect cannot be formed; If the roughness of the non-patterned area 13 is too high, the hand-held touch will be poor, and dirt and dirt will easily accumulate on the surface of the patterned area 11, which is not conducive to cleaning. In addition, if the roughness is too large, it will be difficult to present glitter effect.

Optionally, the gloss G2 (60° angle test) of the non-patterned region 13 is in the range of 2.0Gu≤G2≤20Gu. In other words, the gloss G2 of the surface before the patterning treatment is in the range of 2.0Gu≤G2≤20Gu. Further, the gloss G2 of the non-patterned region 13 is in the range of 2.0Gu≤G2≤6.5Gu. Specifically, the glossiness of the non-patterned region 13 may be, but not limited to, 2.0Gu, 4Gu, 6Gu, 8Gu, 10Gu, 12Gu, 14Gu, 16Gu, 18Gu, 20Gu and the like. When the average gloss of the rough surface 10 before patterning is too low, the surface of the obtained ceramic housing 100 is dull and dull, which affects the visual effect of the ceramic housing 100; when the gloss of the rough surface 10 before patterning is too high, Excessive gloss is not conducive to the formation of low-shine color textures on the surface of the ceramic housing 100 . When the average glossiness of the rough surface 10 is within this range, the ceramic housing 100 can form a matte and low-shiny color texture pattern 15 while having a certain glossiness, thereby having better texture and texture. Visual effect.

Please refer to FIG. 4 , in some embodiments, the texture pattern 15 includes a plurality of textured parts 151, the textured parts 151 are linear concave structures, and each of the textured parts 151 has a plurality of arcs on the bottom wall Textures 1511, the plurality of arc-shaped textures 1511 are arranged in sequence along the extending direction of the texture part 151, the openings of the plurality of arc-shaped textures 1511 have the same orientation, and at least some of the arc-shaped textures 1511 in the plurality of arc-shaped textures 1511 curvatures are equal. In this way, the bottom wall forming the textured portion 151 has an uneven multilayer structure composed of a plurality of arc-shaped textures 1511. /Ceramic grain boundary) produces multiple refractions, thus forming a color flash effect similar to light diffraction patterns.

The texture pattern 15 includes a plurality of texture parts 151, which can be extended and arranged according to preset rules to form the texture pattern 15. In other words, the texture pattern 15 is composed of a plurality of texture parts 151 along a preset Formed in regular arrangement. The openings of the plurality of arc-shaped textures 1511 face the same direction, and the plurality of arc-shaped textures 1511 may be bent toward the same side.

The curvatures of at least some of the arc-shaped textures 1511 in the plurality of arc-shaped textures 1511 are equal. It may be that the curvatures of the plurality of arc-shaped textures 1511 are all equal. Shape texture 1511 has another different curvature.

Optionally, the textured part 151 is a depressed part, and the textured pattern 15 is a depressed textured pattern 15 . The concave texture pattern 15 can be formed by engraving techniques such as radium engraving.

In a specific embodiment, the texture part 151 is a linear texture, and the linear texture includes a plurality of point textures, the plurality of point textures are arranged in sequence, and any two adjacent point textures partially overlap to form It has a structure in which multiple arc textures 1511 are arranged in sequence. Through the superimposition of multiple dot-like textures, the layer has a textured part 151 with an uneven multi-layer structure, so that the texture pattern 15 presents a colorful structural color, thereby having a color flash effect.

In some embodiments, the arc-shaped texture 1511 is semi-arc, and the radius of curvature of the arc-shaped texture 1511 is between 5 μm and 50 μm; specifically, the radius of curvature of the arc-shaped texture 1511 can be but not limited to 5 μm, 10 μm, or 20 μm , 30μm, 40μm, 50μm.

Please refer to FIG. 5 together. In some embodiments, the range of the shortest distance w1 of the orthographic projection of the textured portion 151 on the rough surface 10 is 10 μm≦w1≦100 μm. In other words, the minimum width of the orthographic projection of the textured portion 151 on the rough surface 10 is within a range of 10 μm≦w1≦100 μm. In other words, along the direction perpendicular to the extending direction of the textured portion 151 , the arc-shaped texture 1511 has a length in the range of 10 μm≦w1≦100 μm. Further, the range of the shortest distance w1 of the orthographic projection of the textured portion 151 on the rough surface 10 is 60 μm≦w1≦80 μm. Specifically, the shortest distance w1 of the orthographic projection of the textured portion 151 on the rough surface 10 may be, but not limited to, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 62 μm, 64 μm, 68 μm, 70 μm, 72 μm, 74 μm , 78μm, 80μm, 90μm, 100μm, etc.

It should be understood that when the texture portion 151 is a linear texture, the shortest distance w of the orthographic projection of the texture portion 151 on the rough surface 10 is the line width of the texture portion 151, that is, the line width of the texture portion 151 is 10 μm≤w1 ≤100 μm, further, the line width of the textured portion 151 may be 60 μm≤w1≤80 μm.

In some embodiments, along the direction perpendicular to the rough surface 10 , the depth h1 of the textured portion 151 is in the range of 1 μm≦h1≦50 μm. Further, along the direction perpendicular to the rough surface 10 , the depth h1 of the textured portion 151 is in the range of 4 μm≤h1≤15 μm. Still further, along the direction perpendicular to the rough surface 10 , the depth h1 of the textured portion 151 is in the range of 10 μm≤h1≤15 μm. Specifically, h1 may be, but not limited to, 1 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm. The depth of the textured part 151 is too shallow, it is difficult to form a multi-layer structure with multiple arc-shaped textures 1511, which affects the color flash effect of the ceramic shell 100; If it is too deep, the strength of the ceramic housing 100 will be affected.

6 and 7, in a specific embodiment, the multiple textured parts 151 include multiple first textured lines 152 and multiple second textured lines 154, that is to say, the textured pattern 15 includes multiple A first textured line 152 and a plurality of second textured lines 154, the first textured line 152 intersects with the second textured line 154, the plurality of first textured lines 152 extend along the first direction, and extend along the second direction, the multiple first texture lines 152 are parallel to each other, the line width of the first texture lines 152 is 60 μm to 80 μm, and the distance between any two adjacent first texture lines 152 is 60 μm to 80 μm; The plurality of second textured lines 154 extend along the second direction and are arranged along the second direction. The plurality of second textured lines 154 are parallel to each other. The line width of the second textured lines 154 is 60 μm to 80 μm, and any adjacent The distance between the two second textured lines 154 is 60 μm to 80 μm. Optionally, the first textured lines 152 are perpendicular to the second textured lines 154 . In this way, the patterned area 11 can form uniform colorful flashing spots on the entire surface.

Please refer to FIG. 2 again, in some embodiments, the non-patterned region 13 has a plurality of protruding structures 131 closely arranged. In other words, the protruding structures 131 are closely arranged so that the non-patterned area 13 forms the rough surface 10 .

Please refer to Fig. 5 again, optionally, along the direction perpendicular to the rough surface 10, the maximum height h2 of the protruding structure 131 is in the range of 10 μm≤h2≤23 μm. In other words, the level difference of the rough surface 10 (non-patterned area 13 ) ranges from 10 μm to 23 μm. Specifically, h2 may be, but not limited to, 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, 20 μm, 22 μm, 23 μm and the like. When the maximum height h2 of the raised structure 131 is less than 10 μm, the non-patterned area 13 has a high-gloss mirror effect, and after laser engraving is performed to form the patterned area 11, a low flicker effect cannot be formed; the maximum height of the raised structure 131 When the height h2 is higher than 23 μm, if the roughness of the non-patterned region 13 is too high, the hand feeling will be bad, and dirt will easily accumulate on the surface of the patterned region 11, which is not conducive to cleaning. In addition, if the roughness is too high Large, after laser engraving, it is difficult to show the flash effect.

Optionally, the range of the maximum distance w2 of the orthographic projection of the protruding structure 131 on the rough surface 10 is 4 μm≦w2≦28 μm. In other words, the maximum width w2 of the protruding structure 131 is in the range of 4 μm≦w2≦28 μm. Specifically, w2 may be, but not limited to, 4 μm, 6 μm, 8 μm, 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, 20 μm, 22 μm, 24 μm, 26 μm, 28 μm, etc.

Please refer to FIG. 8 and FIG. 9 , the embodiment of the present application also provides a preparation method of the ceramic housing 100, which includes:

S201, providing a ceramic shell substrate 100', the ceramic shell substrate 100' has a surface 10' to be treated;

S202, performing sandblasting on the surface 10' to be treated to obtain an intermediate rough surface 10a; and

S203, patterning the intermediate rough surface 10a to obtain a rough surface 10, the rough surface 10 has a patterned area 11, and the patterned area 11 has a texture pattern 15, wherein the texture pattern 15 Shows structural color.

For the features of this embodiment that are the same as those of the foregoing embodiments, please refer to the description of the corresponding features of the foregoing embodiments, and details are not repeated here.

In the preparation method of the present application, sandblasting is performed on the surface 10' of the ceramic shell base material 100' to be treated to form an intermediate rough surface 10a on the ceramic shell base material 100', and the intermediate rough surface 10a makes the ceramic shell The surface of the body 100 has a matte effect, which can also prevent fingerprints from remaining on the surface of the ceramic housing 100 and has an anti-fingerprint effect. Then patterning is performed on the rough surface 10a in the intermediate state to form a texture pattern 15. The texture pattern 15 presents a structural color. The patterning treatment exposes the ceramic grains on the surface of the ceramic shell 100, and the ceramic grain boundary forms a certain angle with the horizontal plane. When the light passes through the ceramic grain boundary and the surface of the ceramic grain, there is an optical path difference, forming a diffraction effect, thereby forming a colored flash point, so that the texture pattern 15 on the ceramic shell 100 presents a colored flash. As a result, the obtained ceramic housing 100 not only has a matte effect, but also has a colored low-flicker effect. Compared with the patterning treatment on the smooth surface, the preparation method of the present application performs the patterning treatment on the intermediate rough surface 10a, which can better weaken the level difference in the area of the texture pattern 15, so that the obtained ceramic shell 100 Has a better feel. In addition, the viewing angle of the colorful flashes obtained by patterning on the smooth surface is limited. The preparation method of the present application performs patterning on the intermediate rough surface 10a, so that the ceramic shell 100 can be viewed in all directions. to flash. Moreover, the color of the textured pattern 15 is due to the structure of the textured pattern 15 which can be seen by the naked eye as color flashes, so even after a long period of use, no fading phenomenon will occur.

Referring to Fig. 10, in some embodiments, in step S201, the providing the ceramic housing substrate 100' includes:

S2011, mixing the ceramic powder with a binder and granulating to obtain pellets;

Specifically, the ceramic powder and the binder are respectively weighed according to a preset weight ratio, the ceramic powder and the binder are uniformly mixed, and granulated by granulation equipment to obtain granules. For a detailed description of the ceramic powder, please refer to the description of the corresponding part of the above embodiment, and will not be repeated here. When the raw material components of the ceramic shell base material 100' also include dispersant, colorant, etc., before granulation, the preparation method also includes mixing the dispersant, colorant, etc. with ceramic powder and binder.

Optionally, the mesh number of the pellets ranges from 40 mesh to 100 mesh. Specifically, the mesh size of the pellets may be, but not limited to, 40 mesh, 50 mesh, 60 mesh, 70 mesh, 80 mesh, 90 mesh, 100 mesh and the like. In other words, the particle size of the pellets ranges from 150 μm to 380 μm; specifically, the particle size of the pellets can be, but not limited to, 150 μm, 180 μm, 200 μm, 220 μm, 250 μm, 280 μm, 300 μm, 330 μm, 350 μm, 380 μm, etc. The particle size of the granules is too small, which increases the difficulty of preparation, thereby increasing the cost. When the particle size of the granules is as small as nanometers, the granules are easy to agglomerate to form large particles, which will reduce the mechanical strength of the prepared ceramic shell 100; When the particle size of the granules is too large, for example greater than 0.8 μm, gaps and air bubbles are likely to remain during green molding, and the mechanical strength of the ceramic shell 100 produced will also be reduced. Therefore, when the particle size of the granules is in the range of 0.2 μm to 0.8 μm, the prepared ceramic housing 100 can not only have better mechanical strength, but also have lower manufacturing cost.

Optionally, the BET specific surface area of the pellets is 6m ² /g to 10m ² /g. Specifically, the BET specific surface area of the pellets may be, but not limited to, 6m ² /g, 6.5m ² /g, 7m ² /g, 7.5m ² /g, 8m ² /g, 8.5m ² /g, 9m ² /g, ^{9.5m 2} /g, 10m ² /g, etc. The larger the specific surface area, the smaller the pellets, and the pellets are easy to agglomerate to form large particles, which will reduce the mechanical strength of the ceramic shell 100; the smaller the specific surface area, the larger the pellets, and it is easy to remain Gaps and air bubbles will also reduce the mechanical strength of the fabricated ceramic shell 100 .

Optionally, in the pellets, the weight percentage of the binder is in the range of 3% to 5%. For the detailed description of the ceramic powder and the binder, please refer to the description of the corresponding part of the above embodiment.

S2012, molding with the pellets to obtain a green body; and

Optionally, the pellets are used for molding by at least one of molding processes such as compression molding, injection molding, tape casting, etc., to obtain the green body.

In a specific embodiment, molding is carried out by a compression molding process, and the molding is carried out by using the pellets to obtain a green body, which includes: performing compression molding at room temperature with a molding pressure ranging from 10MPa to 15MPa, and keeping Press for 10s to 20s to obtain a green body.

Optionally, the compression molding pressure ranges from 10MPa, 11MPa, 12MPa, 13MPa, 14MPa, 15MPa and so on. If the molding pressure is too small, the compactness of the obtained green body will be affected, and it may not even become a green body with a complete shape. However, the pressure of molding is too high, which increases the requirements of the equipment.

Optionally, the pressure holding time may be 10s, 12s, 14s, 16s, 18s, 20s, etc. The longer the pressure holding time, the better the compactness and molding condition of the formed green body, but the long holding time will affect the production efficiency.

In some other embodiments, the pellets can also be placed in an injection molding machine to produce a green body by injection molding.

In some other embodiments, the raw material components of the ceramic shell base material 100' are mixed to form a slurry, which is tape-cast using a tape casting machine to obtain a green body. It should be noted that granulation is not required when tape casting is used to prepare a green body.

S2013, debinding the green body, and performing a second sintering to obtain a ceramic shell base material 100'.

Optionally, the green body is gradually heated to 800°C to 950°C for debinding, and the debinding time ranges from 2h to 3h, so that the binder in the green body can be removed by volatilization or decomposition; and Under normal pressure, the second sintering is carried out at 1350° C. to 1500° C., and the time of the second sintering ranges from 8 hours to 10 hours. When the raw material components of the ceramic shell 100 also include a dispersant, the dispersant will also decompose or volatilize during debinding, thereby being eliminated.

Optionally, the debinding temperature is 800°C to 950°C, specifically, but not limited to, 800°C, 820°C, 840°C, 860°C, 880°C, 900°C, 920°C, 940°C, 950°C etc. If the temperature of debinding is too low, the adhesive removal time will be too long, which will affect the production efficiency, and even cannot be completely removed. It is easy to leave pores on the ceramic shell 100 during sintering, which will affect the mechanical properties of the obtained ceramic shell 100. Intensity, if the debinding temperature is too high, the adhesive decomposes or volatilizes too violently, and it is easy to leave air bubbles in the embryo body, which will affect the mechanical strength of the ceramic shell 100. In addition, if the debinding temperature is too high, the ceramic may prematurely The occurrence of crystallization also reduces the mechanical strength of the ceramic case 100 .

Optionally, the debinding time is 2h to 3h, specifically, but not limited to, 120min, 130min, 140min, 150min, 160min, 170min, 180min, etc. If the deglue time is too short, the degumming will be incomplete, and air bubbles may remain in the prepared ceramic shell 100 . If the degumming time is too short, the production efficiency will be affected.

Optionally, the second sintering temperature ranges from 1350°C to 1500°C; specifically, but not limited to, it may be 1350°C, 1380°C, 1400°C, 1420°C, 1450°C, 1480°C, 1500°C, etc. If the temperature of the second sintering is too low, the ceramic shell 100 will not become porcelain; if the temperature of the second sintering is too high, it will easily cause overfiring and affect the mechanical strength of the prepared ceramic shell 100 .

Optionally, the second sintering time ranges from 8h to 10h; specifically, it may be, but not limited to, 8h, 8.5h, 9h, 9.5h, 10h and so on. If the sintering time of the green body is too long, the ceramic grains tend to grow too large, which is not conducive to improving the mechanical strength of the ceramic shell 100; If it is insufficient, it will also affect the mechanical strength of the manufactured ceramic shell 100 .

For the features of this embodiment that are the same as those of the foregoing embodiments, please refer to the description of the corresponding features of the foregoing embodiments, and details are not repeated here.

Please refer to FIG. 11 , in some embodiments, in step S201, the providing the ceramic shell substrate 100' includes:

S2011a, mixing the ceramic powder with a binder and granulating to obtain pellets;

S2012a, molding with the pellets to obtain a green body;

S2013a, debinding the green body, and performing a second sintering, and

For the detailed description of S2011a to S2013a, please refer to the description of the corresponding part of the foregoing embodiment, and details are not repeated here.

S2014a, perform mechanical processing (CNC processing) and first polishing, so as to obtain the ceramic shell substrate 100'.

Optionally, the surface of the sintered sample is machined, and then ground and polished (namely, the first polishing) to obtain a ceramic shell substrate 100' in a high-gloss state.

Optionally, the range of roughness Ra3 of the ceramic shell substrate 100' is 5nm to 25nm, specifically, but not limited to 5nm, 8nm, 10nm, 13nm, 15nm, 18nm, 20nm, 23nm, 25nm wait.

Optionally, the glossiness (60° angle test) of the surface of the ceramic shell substrate 100' is 130GU to 160GU. Specifically, the glossiness of the ceramic shell substrate 100' may be, but not limited to, 130Gu, 135Gu, 140Gu, 145Gu, 150Gu, 155Gu, 160Gu, etc.

For the features of this embodiment that are the same as those of the foregoing embodiments, please refer to the description of the corresponding features of the foregoing embodiments, and details are not repeated here.

In some embodiments, in step S202, performing sandblasting on the surface 10' to be treated to obtain an intermediate rough surface 10a includes:

Using sandblasting equipment, using sand grains with a mesh number of 100 mesh to 5000 mesh, and a sandblasting pressure ranging from 0.1MPa to 10MPa, sandblasting is performed on the surface 10' to be treated to obtain an intermediate rough surface 10a. The topography of the intermediate state rough surface 10a is shown in FIG. 12 . Sandblasting is performed on the surface of the high-gloss ceramic shell base material 100' to form an intermediate rough surface 10a with a plurality of raised structures 131 on the surface of the ceramic shell base material 100', so that the intermediate rough surface 10a appears The matte effect can also reduce the level difference in the area of the texture pattern 15 after the patterning process, so that the obtained ceramic shell 100 has a better hand feeling.

Optionally, the intermediate rough surface 10a has a plurality of closely arranged protruding structures 131 . The range of the roughness of the intermediate rough surface 10a is 0.04μm≤Ra2≤0.8μm, and the range of the gloss G2 of the intermediate rough surface 10a is 2.0Gu≤G2≤20Gu. For a detailed description of the protruding structure 131 , please refer to the description of the corresponding part of the above embodiment, and details will not be repeated here.

Optionally, the sand grains include at least one of SiC sand, corundum sand, zirconia sand, and quartz sand. In a specific embodiment, the sand grains are corundum sand, which has high hardness and is not easily broken during the sandblasting process.

Optionally, the shape of the sand grains includes at least one of spherical shape and pyramidal shape. Compared with the pyramid shape, the intermediate rough surface 10a obtained by using spherical sand grains for sandblasting treatment is smoother and has better hand feeling.

The mesh number of sand grains is 100 mesh to 5000 mesh. Further, the mesh number of the sand grains is 800 mesh to 1500 mesh. Specifically, the mesh of the sand grains may be, but not limited to, 100 mesh, 300 mesh, 500 mesh, 800 mesh, 1000 mesh, 1200 mesh, 1200 mesh, 1500 mesh, etc. If the mesh number of the sand grains is too large and the grain size of the sand grains is small, the roughness of the obtained intermediate rough surface 10a is small, which is close to the high-gloss mirror effect. After laser engraving is performed to form the patterned area 11, the low-shine effect cannot be formed; the mesh number of the sand grains small, the sand particle size is large, and the roughness of the obtained intermediate rough surface 10a is large, then the hand-held touch is not good, and it is easy to hide dirt on the surface of the patterned area 11, which is not conducive to cleaning. In addition, the roughness is too large. Large, after laser engraving, it is difficult to show the flash effect.

The pressure of sand blasting ranges from 0.1 MPa to 10 MPa. Further, the pressure range of the blasting is 0.6MPa to 1.2MPa. Specifically, the mesh size of the sand grains may be, but not limited to, 0.1MPa, 0.3MPa, 0.6MPa, 0.8MPa, 1MPa, 1.2MPa, 2MPa, 4MPa, 6MPa, 8MPa, 10MPa and the like. If the sandblasting pressure is too high, ceramic cracks are likely to be formed on the surface of the ceramic housing base material 100'. If the sandblasting pressure is too low, the production time will be prolonged and the production efficiency will be reduced.

In some embodiments, the sandblasting equipment includes a nozzle, and the vertical distance between the nozzle and the surface 10' to be treated is in the range of 10cm to 50cm when sandblasting is performed. Further, when sandblasting is performed, the vertical distance between the nozzle and the surface 10' to be treated is in the range of 25cm to 35cm. Specifically, when performing sandblasting, the vertical distance between the nozzle and the surface to be treated 10' can be, but not limited to, 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, 40cm, 45cm, 50cm, etc. If the distance between the nozzle and the surface 10' to be treated is too close, ceramic cracks are likely to be generated on the surface of the ceramic shell substrate 100'; if the distance between the nozzle and the surface 10' to be treated is too far, the production time will be prolonged and the production efficiency will be reduced.

In some embodiments, in step S203, the patterning of the intermediate state rough surface 10a to obtain the rough surface 10 includes: using a laser, the patterning of the intermediate state rough surface 10a , to obtain a rough surface 10.

Further, in step S203, the patterning of the intermediate state rough surface 10a to obtain the rough surface 10 includes: using an infrared nanosecond laser with a wavelength of 1000nm to 1300nm on the intermediate state rough surface 10a Laser engraving is performed to form a texture pattern 15 on the intermediate rough surface 10 a to obtain a rough surface 10 . The topography of the rough surface 10 after laser engraving is shown in FIGS. 13 and 14 .

Using laser for laser engraving, the laser spot is usually a circular spot, and each circular spot hits the intermediate state rough surface 10a, which will form a U-shaped upper groove (cylindrical bottom) on the intermediate state rough surface 10a. is a semi-circular structure), and the ceramic grains of the ceramic housing 100 are exposed (for example, ceramic grains, the topography of ceramic grains is shown in Figure 15), when continuous laser engraving is used, it will form The lines composed of superimposed U-shaped grooves make the bottom wall of the formed texture pattern 15 form a plurality of arc-shaped textures 1511 arranged in sequence along the extending direction of the lines, and the openings of the plurality of arc-shaped textures 1511 face The same, so that the texture pattern 15 has an uneven multilayer structure. When visible light is incident on the texture portion 151, multiple refractions occur between the multilayer structures (ceramic grain boundaries/ceramic grains/ceramic grain boundaries), thereby Creates a colorful flash effect similar to a light diffraction pattern. Since laser engraving is carried out on a rough surface with raised structures 131, the arc-shaped texture 1511 formed by laser engraving will be blocked by the raised structures 131, forming interrupted arc-shaped textures 1511, arc-shaped textures 1511 The size of 1511 is very small, so it is difficult to take pictures with clear arc texture 1511 with existing equipment. Accompanying drawing 16 is a topography diagram obtained by using infrared nanosecond laser engraving on the surface of high-gloss ceramics. On the topography diagram, arc-shaped textures 1511 arranged one by one can be clearly seen. Laser engraving is performed on the surface of high-gloss ceramics, and the obtained ceramic shell has high-brightness colorful flashes, but the viewing angle of the flashes is limited. From Figure 16 and the obtained colorful flashes, both can be used to confirm the texture pattern 15 obtained by the scheme of this application. The textured part 151 has a plurality of arc-shaped textures 1511 . For detailed descriptions of the textured portion 151 and the arc-shaped texture 1511 , please refer to the descriptions of the corresponding parts of the above embodiments, and details are not repeated here.

Optionally, the wavelength range of the infrared nanosecond laser is 1000nm to 1300nm; specifically, but not limited to 1000nm, 1050nm, 1100nm, 1150nm, 1200nm, 1250nm, 1300nm, etc.

In some embodiments, the spot diameter of the infrared nanosecond laser ranges from 10 μm to 100 μm. Specifically, the spot diameter can be, but not limited to, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 62 μm, 64 μm, 68 μm, 70 μm, 72 μm, 74 μm, 78 μm, 80 μm, 90 μm, 100 μm, etc.

In some embodiments, the laser engraving speed ranges from 800mm/s to 1500mm/s. Specifically, the speed of laser engraving is but not limited to 800mm/s, 900mm/s, 1000mm/s, 1100mm/s, 1200mm/s, 1300mm/s, 1400mm/s, 1500mm/s, etc. If the speed of laser engraving is too low, it will affect the production efficiency; if the speed of laser engraving is too high, there will be line jumping, that is, the light spot cannot work uniformly and continuously, which will affect the obtained texture pattern 15, and even make the obtained texture pattern 15 without color flash effect.

In some embodiments, the laser engraving frequency ranges from 40KHz to 300KHz. Specifically, the frequency of laser engraving can be but not limited to 40KHz, 70KHz, 100KHz, 150KHz, 200KHz, 250KHz, 300KHz and so on.

In some embodiments, the output power of the laser engraving ranges from 6W to 24W. Specifically, the output power of laser engraving can be, but not limited to, 6W, 10W, 12W, 15W, 18W, 20W, 22W, 24W, etc. If the output power of the laser engraving is too high, the texture will be too deep, which will affect the strength of the ceramic shell 100 . If the output power of the laser engraving is too small, the obtained texture is too shallow, and it is difficult to form a multi-layer structure with multiple arc-shaped textures 1511 , which affects the color flashing effect of the ceramic shell 100 .

Please refer to FIG. 17. In a specific embodiment, an infrared nanosecond laser with a wavelength of 1000nm to 1300nm is used to perform laser engraving on the intermediate state rough surface 10a to form a texture pattern 15 on the intermediate state rough surface 10a. ,include:

S2031, using an infrared nanosecond laser with a wavelength of 1000nm to 1300nm to perform first radium engraving on the intermediate state rough surface 10a, so as to form a plurality of first texture lines 152 on the intermediate state rough surface 10a, the plurality of The first texture lines 152 are parallel to each other, the line width of the first texture lines 152 is 60 μm to 80 μm, and the distance between any two adjacent first texture lines 152 is 60 μm to 80 μm; and

S2032, using an infrared nanosecond laser with a wavelength of 1000nm to 1300nm to perform second radium engraving on the intermediate state rough surface 10a, so as to form a plurality of second texture lines 154 on the intermediate state rough surface 10a, the plurality of The second texture lines 154 are parallel to each other, the line width of the second texture lines 154 is 60 μm to 80 μm, and the distance between any two adjacent second texture lines 154 is 60 μm to 80 μm; wherein, the plurality of first texture lines A textured line 152 and the plurality of second textured lines 154 form a textured pattern 15, and the textured pattern 15 presents a structural color.

Please refer to FIG. 18 , the embodiment of the present application also provides a method for preparing a ceramic housing 100, which includes:

S301, providing a ceramic housing base material 100', the ceramic housing base material 100' having a surface 10' to be treated;

S302, performing sandblasting on the surface 10' to be treated to obtain an intermediate rough surface 10a;

S303, patterning the intermediate rough surface 10a to obtain a rough surface 10, the rough surface 10 has a patterned area 11, and the patterned area 11 has a texture pattern 15, wherein the texture pattern 15 exhibit structural color; and

For the detailed description of step S301 to step S303, please refer to the description of the corresponding feature part of the above embodiment, and details are not repeated here.

S304, performing annealing treatment.

Optionally, the annealing process is performed in an annealing furnace at 750° C. to 850° C. for 2 hours to 5 hours, so as to eliminate gray on the surface of the ceramic housing 100 after laser engraving. After laser engraving, the energy of radium engraving will make the oxides in the ceramic shell 100, such as oxygen atoms in zirconia, transition to form oxygen vacancies, thus appearing gray; annealing can replenish the oxygen vacancies and restore the original state, thereby Eliminate the gray produced after laser engraving.

Optionally, when the color of the ceramic shell 100 is black or other darker colors, the annealing treatment may not be performed. Because the black covers the gray, the influence of the gray of the oxygen vacancies after laser engraving on the color of the ceramic housing 100 can be weakened.

Optionally, the annealing temperature can be any temperature between 750°C and 850°C, specifically, it can be but not limited to 750°C, 760°C, 770°C, 780°C, 790°C, 800°C, 810°C, 820°C, 830°C, 840°C, 850°C. When the annealing temperature is lower than 750°C, the oxygen vacancies in the ceramic shell 100 cannot be fully replenished, and it is difficult to eliminate the gray color after laser engraving, which affects the appearance of the ceramic shell 100. When the annealing temperature is higher than 850°C, the ceramic crystal If the grains grow too large, the mechanical strength of the ceramic housing 100 will be affected.

Optionally, the annealing time may be any value between 2h and 5h, specifically, but not limited to, 2h, 2.5h, 3h, 3.5h, 4h, 4.5h, 5h and so on. When the annealing time is less than 2 hours, the oxygen vacancies in the ceramic shell 100 do not have enough time to be fully replenished, and it is difficult to eliminate the gray produced after laser engraving. When the annealing time is longer than 5 hours, the production efficiency will be reduced and the cost will be increased.

For the features of this embodiment that are the same as those of the foregoing embodiments, please refer to the description of the corresponding features of the foregoing embodiments, and details are not repeated here.

For a detailed description of the same features of this embodiment and the above embodiment, please refer to the above embodiment, and details are not repeated here.

Referring to FIG. 19 and FIG. 20 , the embodiment of the present application further provides an electronic device 400 , which includes: a display assembly 410 , the ceramic housing 100 described in the embodiment of the present application, and a circuit board assembly 430 . The display assembly 410 is used for displaying; the ceramic casing 100 is disposed on one side of the display assembly 410; the circuit board assembly 430 is disposed between the display assembly 410 and the ceramic casing 100, and It is electrically connected with the display component 410 and used for controlling the display component 410 to display.

The electronic device 400 in the embodiment of the present application may be, but not limited to, portable electronic devices such as mobile phones, tablet computers, notebook computers, desktop computers, smart bracelets, smart watches, e-readers, and game consoles.

For the detailed description of the ceramic housing 100 , please refer to the description of the corresponding part of the above embodiment, and details are not repeated here.

Optionally, the display component 410 may be, but not limited to, a liquid crystal display component, a light emitting diode display component (LED display component), a micro light emitting diode display component (Micro LED display component), a submillimeter light emitting diode display component (Mini LED One or more of display components), organic light emitting diode display components (OLED display components), and the like.

Referring to FIG. 20 , optionally, the circuit board assembly 430 may include a processor 431 and a memory 433 . The processor 431 is electrically connected to the display component 410 and the memory 433 respectively. The processor 431 is used to control the display component 410 to display, and the memory 433 is used to store the program code required for the operation of the processor 431, control the program code required by the display component 410, and display the display component 410. content etc.

Optionally, the processor 431 includes one or more general-purpose processors 431, wherein the general-purpose processor 431 may be any type of device capable of processing electronic instructions, including a central processing unit (Central Processing Unit, CPU), a microprocessor , microcontrollers, main processors, controllers, and ASICs, etc. The processor 431 is used to execute various types of digitally stored instructions, such as software or firmware programs stored in the memory 433, which enable the computing device to provide a wide variety of services.

Optionally, the memory 433 can include a volatile memory (Volatile Memory), such as a Random Access Memory (Random Access Memory, RAM); the memory 433 can also include a non-volatile memory (Non-Volatile Memory, NVM), such as Read-only memory (Read-Only Memory, ROM), flash memory (Flash Memory, FM), hard disk (Hard Disk Drive, HDD) or solid-state drive (Solid-State Drive, SSD). The memory 433 may also include a combination of the above-mentioned kinds of memories.

Please refer to FIG. 21 and FIG. 22. In some embodiments, the electronic device 400 of the embodiment of the present application further includes a middle frame 420 and a camera module 450, and the middle frame 420 is arranged between the display component 410 and the ceramic housing 100. between, and the sides of the middle frame 420 are exposed from the ceramic housing 100 and the display assembly 410 . The middle frame 420 and the ceramic housing 100 form an accommodating space, and the accommodating space is used for accommodating the circuit board assembly 430 and the camera module 450 . The camera module 450 is electrically connected to the processor 431 for taking pictures under the control of the processor 431 .

Optionally, the ceramic housing 100 has a light-transmitting portion 101, and the camera module 450 can take pictures through the light-transmitting portion 101 on the ceramic housing 100, that is, the camera module 450 in this embodiment 450 for the rear camera module. It can be understood that, in other implementation manners, the light-transmitting portion 101 may be disposed on the display assembly 410 , that is, the camera module 450 is a front-facing camera module 450 . In the schematic diagram of this embodiment, the light-transmitting portion 101 is used as an opening for illustration. In other embodiments, the light-transmitting portion 101 may not be an opening, but a light-transmitting material, such as plastic, glass, etc. .

It can be understood that the electronic device 400 described in this embodiment is only a form of the electronic device 400 applied to the ceramic housing 100, and should not be construed as a limitation on the electronic device 400 provided in this application, nor should it It should be understood as a limitation to the ceramic housing 100 provided in various embodiments of the present application.

References in this application to "an embodiment" and "an implementation" mean that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of a phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described in this application can be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the various embodiments of the present application can be combined arbitrarily without departing from the spirit and scope of the technical solution of the present application if there is no contradiction between them. the embodiment.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than limit them. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be The modification or equivalent replacement of the scheme shall not deviate from the spirit and scope of the technical scheme of the present application.

Claims (20)

A ceramic shell, characterized in that the ceramic shell has a rough surface, the rough surface includes a patterned area, the patterned area has a texture pattern, and the texture pattern presents a structural color. The ceramic housing according to claim 1, wherein the texture pattern comprises a plurality of textured parts, the textured part is a linear concave structure, and the bottom wall of the textured part has a plurality of arc-shaped textures, The plurality of arc-shaped textures are arranged in sequence along the extending direction of the textured portion, the openings of the plurality of arc-shaped textures have the same orientation, and at least some of the arc-shaped textures have the same curvature. The ceramic housing according to claim 2, wherein the range of the shortest distance w1 of the orthographic projection of the textured portion on the rough surface of the ceramic housing is 10 μm≤w1≤100 μm. The ceramic case according to claim 2, characterized in that, along the direction perpendicular to the rough surface, the depth h1 of the textured part is in the range of 1 μm≤h1≤50 μm. The ceramic housing according to claim 2, wherein the textured part comprises a plurality of dot-like textures, the plurality of dot-like textures are arranged in sequence, and any two adjacent dot-like textures partially overlap , to form a structure with multiple arc-shaped textures arranged in sequence. The ceramic housing according to claim 1, wherein the range of roughness Ra1 of the patterned area is 0.05 μm≤Ra1≤1.0 μm; the range of gloss G1 of the patterned area is 3Gu≤G1 ≤30Gu. The ceramic casing according to claim 6, wherein the rough surface further includes a non-patterned area, and the non-patterned area is connected to the patterned area; the roughness Ra1 of the patterned area is greater than the The roughness Ra2 of the non-patterned area, the gloss G1 of the patterned area is greater than the gloss G2 of the non-patterned area; the range of the roughness Ra2 of the non-patterned area is 0.04μm≤Ra2≤0.8μm; The range of gloss G2 of the non-patterned area is 2.0Gu≤G2≤20Gu. The ceramic casing according to claim 7, wherein the range of roughness Ra1 of the patterned area is 0.6 μm≤Ra1≤0.8 μm; the range of gloss G1 of the patterned area is 3.5Gu≤ G1≤8.5Gu; the range of roughness Ra2 of the non-patterned area is 0.2 μm≤Ra2≤0.6 μm; the range of gloss G2 of the non-patterned area is 2.0Gu≤G2≤6.5Gu. The ceramic casing according to claim 7, wherein the non-patterned area has a plurality of raised structures, and along the direction perpendicular to the rough surface, the range of the maximum height h2 of the raised structures is 10 μm≤h2≤23 μm, the range of the maximum distance w2 of the orthographic projection of the raised structure on the rough surface is 4 μm≤w2≤28 μm. The ceramic shell according to claim 1, wherein the texture pattern comprises a plurality of first texture lines and a plurality of second texture lines, the plurality of first texture lines are parallel to each other, and the plurality of second texture lines A texture line extends along the first direction and is arranged along the second direction, the line width of the first texture line is 60 μm to 80 μm, and the distance between any two adjacent first texture lines is 60 μm to 80 μm; the multiple The second texture lines are parallel to each other, the plurality of second texture lines extend along the second direction and are arranged along the second direction, the line width of the second texture lines is 60 μm to 80 μm, and any adjacent two of the second texture lines The distance between the two texture lines is 60 μm to 80 μm. A method for preparing a ceramic shell, characterized in that it comprises: providing a ceramic housing substrate having a surface to be treated; Sandblasting the surface to be treated to obtain an intermediate rough surface; and The intermediate state rough surface is patterned to obtain a rough surface, the rough surface has a patterned area, the upper patterned area has a texture pattern, and the texture pattern presents a structural color. The preparation method of the ceramic housing according to claim 11, wherein said surface to be treated is subjected to sandblasting to obtain an intermediate rough surface, comprising: Using sand grains with a mesh number of 100 mesh to 5000 mesh and a sandblasting pressure ranging from 0.1 MPa to 10 MPa, sandblasting is performed on the surface to be treated to obtain an intermediate rough surface. The method for preparing a ceramic shell according to claim 12, wherein the sand grains have a mesh size of 800 mesh to 1500 mesh, and the sandblasting pressure ranges from 0.6 MPa to 1.2 MPa. The method for preparing a ceramic shell according to claim 12, wherein the sand grains include at least one of SiC sand, corundum sand, zirconia sand, and quartz sand, and the shapes of the sand grains include spherical and pyramidal shapes. at least one of the The method for preparing a ceramic shell according to claim 12, characterized in that, when the sandblasting is performed, the vertical distance between the nozzle and the surface to be treated is in the range of 10 cm to 50 cm. The method for preparing a ceramic shell according to any one of claims 14-15, wherein said patterning the intermediate rough surface to obtain a rough surface comprises: Laser engraving is carried out on the intermediate state rough surface by using an infrared nanosecond laser with a wavelength of 1000nm to 1300nm to form a texture pattern on the intermediate state rough surface to obtain a rough surface. The method for preparing a ceramic shell according to claim 16, characterized in that the spot diameter of the infrared nanosecond laser ranges from 60 μm to 80 μm. The method for preparing a ceramic shell according to claim 16, wherein the speed of laser engraving ranges from 800mm/s to 1500mm/s, the frequency range of laser engraving ranges from 40KHz to 300KHz, and the output power of laser engraving The range is 6W to 24W. The preparation method of the ceramic shell according to any one of claims 11-15, 17, 18, characterized in that the preparation method further comprises: Annealing is performed at 750°C to 850°C. An electronic device, characterized in that it comprises: display components; A ceramic casing, the ceramic casing is arranged on one side of the display assembly, the ceramic casing has a rough surface, the rough surface includes a patterned area, the patterned area has a texture pattern, and the texture pattern exhibit structural color; and A circuit board assembly, the circuit board assembly is arranged between the ceramic casing and the display assembly, and is electrically connected to the display assembly, and is used to control the display assembly to display.

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