WO2020221069A1 - Ceramic structural member, preparation method thereof, and terminal comprising same - Google Patents

Ceramic structural member, preparation method thereof, and terminal comprising same Download PDF

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Publication number
WO2020221069A1
WO2020221069A1 PCT/CN2020/085961 CN2020085961W WO2020221069A1 WO 2020221069 A1 WO2020221069 A1 WO 2020221069A1 CN 2020085961 W CN2020085961 W CN 2020085961W WO 2020221069 A1 WO2020221069 A1 WO 2020221069A1
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ceramic
component
zirconia
transparent
ceramic component
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PCT/CN2020/085961
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French (fr)
Chinese (zh)
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朱广祥
郜成杰
黄义宏
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华为技术有限公司
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    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/001—Joining burned ceramic articles with other burned ceramic articles or other articles by heating directly with other burned ceramic articles
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    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
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    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/08—Housings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
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    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
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    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/04—Ceramic interlayers
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    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
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    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
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    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
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    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
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    • C04B2237/34—Oxidic
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    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
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    • C04B2237/32—Ceramic
    • C04B2237/34—Oxidic
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    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
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    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
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    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/366—Aluminium nitride

Definitions

  • the embodiments of the present invention relate to the technical field of ceramic products, and in particular to ceramic structural parts and their preparation methods and terminals.
  • Transparent ceramic material has outstanding scratch resistance (hardness 1500-2200Kgf/mm 2 ) and excellent optical performance (transmittance ⁇ 82%@550nm), which can basically meet the optical requirements of mobile terminal products Lens (lens), and can replace glass ( Hardness ⁇ 650Kgf/mm 2 ) has become a new-generation Lens material for mobile terminal products, such as PPG (PhotoPlethysmoGraphy, PhotoplethysmoGraphy) Lens for the back shell of smart watches.
  • PPG PhotoPlethysmoGraphy, PhotoplethysmoGraphy
  • Zirconia ceramic material has high bending strength (1000-1200MPa) and fracture toughness ( ⁇ 7MPa/m 2 ).
  • the single unit and the whole machine have good mechanical reliability, especially the resistance of the whole machine.
  • an embodiment of the present invention provides a ceramic structural component, including a transparent ceramic component and a zirconia ceramic component that are connected as a whole, which has the performance advantages of both the transparent ceramic and the zirconia ceramic, and the two ceramic components of different materials are connected
  • the joint is stable, has a seamless appearance effect, can effectively waterproof and dustproof, to a certain extent solve the gap appearance, aging degumming and poor waterproofness caused by the use of adhesive to connect the existing ceramic components of different materials.
  • the first aspect of the embodiments of the present invention provides a ceramic structural component, including a transparent ceramic component and a zirconia ceramic component that are connected as a whole, and the connection surfaces of the transparent ceramic component and the zirconia ceramic component are in direct contact , Or an inorganic transition layer is provided between the connecting surfaces of the transparent ceramic component and the zirconia ceramic component, and the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; There is no gap in the connection between the transparent ceramic component and the zirconia ceramic component at any position, or there is a gap with a width of less than or equal to 0.04 mm at a part of the connection, and there is no gap in the connection at the other positions.
  • part of the connection between the transparent ceramic member and the zirconia ceramic member has a gap with a width less than or equal to 0.03 mm, and there is no gap at the connection at the remaining positions.
  • the material of the inorganic transition layer includes one or more of transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide.
  • the material of the inorganic transition layer includes ceramic raw material powder constituting the transparent ceramic member and ceramic raw material powder constituting the zirconia ceramic member.
  • the content of the ceramic raw material powder constituting the transparent ceramic member gradually decreases, and the composition The content of ceramic raw material powder of zirconia ceramic components gradually increases.
  • the ceramic structure is a co-sintered body.
  • the sintering shrinkage of the raw material of the inorganic transition layer is within the sintering shrinkage of the raw material of the transparent ceramic component.
  • the sintering shrinkage of the zirconia ceramic component raw material is within the sintering shrinkage of the zirconia ceramic component raw material.
  • the inorganic transition layer has a single-layer or multi-layer structure.
  • the thickness of the inorganic transition layer is 1 nm-500 ⁇ m.
  • the connecting surfaces of the transparent ceramic component and the zirconia ceramic component are non-planar structures that can be matched with each other.
  • the connecting surface of the transparent ceramic component and/or the zirconia ceramic component is a rough surface with a roughness of 10 nm-100 ⁇ m.
  • the ceramic structure is a terminal housing.
  • the ceramic structural part provided by the first aspect of the embodiment of the present invention is an integrated structural part formed by seamless or micro-slit (gap less than or equal to 0.04mm) connection of transparent ceramics and zirconia ceramics.
  • Two ceramic parts of different materials are combined Good performance, good appearance, the joint can be effectively waterproof and dustproof, and it has the performance advantages of both transparent ceramics and zirconia ceramics, which can simultaneously meet the optical performance and drop resistance of existing terminal product structures.
  • terminal structures such as terminal housings, specifically terminal structures such as mobile phone front covers, back covers, watch bezels, and rear cases.
  • the second aspect of the embodiments of the present invention provides a method for preparing a ceramic structural member, including:
  • An inorganic transition layer material is arranged between the transparent ceramic blank or component and the connecting surface of the zirconia ceramic blank or component, so that the inorganic transition layer material is combined with the transparent ceramic blank or component, and with the Zirconia ceramic blanks or components are combined and then co-sintered to obtain ceramic structural parts;
  • the ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, an inorganic transition layer is arranged between the connection surfaces of the transparent ceramic component and the zirconia ceramic component, and the transparent ceramic component is connected to the zirconia ceramic component.
  • the zirconia ceramic component is connected as a whole through the inorganic transition layer; there is no gap in the connection between the transparent ceramic component and the zirconia ceramic component at any position.
  • the inorganic transition layer material includes one or more of transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide.
  • the third aspect of the embodiments of the present invention also provides a method for preparing a ceramic structure, including:
  • the width of the reserved gap is less than or equal to the difference between the shrinkage of the blank or member located on the outer side and the blank or member located on the inner side in the direction perpendicular to the connecting surface during the co-sintering process;
  • the ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, the transparent ceramic component is in direct contact with the connecting surface of the zirconia ceramic component, the transparent ceramic component and the zirconia ceramic There is no gap in the connection at any position of the component, or there is a gap with a width of less than or equal to 0.04mm in the connection at some positions, and there is no gap in the connection at other positions.
  • the fourth aspect of the embodiments of the present invention also provides a method for preparing a ceramic structure, including:
  • the ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, the transparent ceramic component is in direct contact with the connecting surface of the zirconia ceramic component, the transparent ceramic component and the zirconia ceramic There is no gap in the connection at any position of the component, or there is a gap with a width of less than or equal to 0.04mm in the connection at some positions, and there is no gap in the connection at other positions.
  • the method for preparing the ceramic structural member provided above in the embodiment of the present invention has simple process and easy control, and can realize industrialized production.
  • an embodiment of the present invention also provides a terminal, the terminal includes a housing, the housing includes a display screen assembled on the front side of the terminal and a back cover assembled on the rear side of the terminal, the display screen includes a display cover and
  • the display module is arranged on the inner side of the display screen cover, the display screen cover and/or the back cover are ceramic structural parts provided by the embodiments of the present invention, and the display screen cover and/or the back cover include integrated
  • a transparent ceramic component and a zirconia ceramic component the transparent ceramic component is in direct contact with the connection surface of the zirconia ceramic component, or the connection surface of the transparent ceramic component and the zirconia ceramic component is arranged between Inorganic transition layer, the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the zirconia ceramic component are connected at any position without a gap, or partly connected There is a gap with a width less than or equal to 0.04mm, and there is no gap in the connection at the
  • the housing further includes a middle frame located between the display screen and the back cover.
  • the middle frame may also be a ceramic structural member provided in an embodiment of the present invention.
  • the transparent ceramic member and the zirconia ceramic member, the connection surface of the transparent ceramic member and the zirconia ceramic member is in direct contact, or the connection surface between the transparent ceramic member and the zirconia ceramic member
  • An inorganic transition layer is provided, and the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the zirconia ceramic component are seamlessly connected at any position, or part of the position
  • the connection has a gap with a width less than or equal to 0.04mm, and there is no gap in the connection at other positions.
  • part of the connection between the transparent ceramic member and the zirconia ceramic member has a gap with a width less than or equal to 0.03 mm, and there is no gap at the connection at the remaining positions.
  • the material of the inorganic transition layer includes one or more of transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide.
  • the material of the inorganic transition layer includes ceramic raw material powder constituting the transparent ceramic member and ceramic raw material powder constituting the zirconia ceramic member.
  • the content of the ceramic raw material powder constituting the transparent ceramic member gradually decreases, and the composition The content of ceramic raw material powder of zirconia ceramic components gradually increases.
  • the inorganic transition layer has a single-layer or multi-layer structure.
  • the thickness of the inorganic transition layer is 1 nm-500 ⁇ m.
  • the connecting surfaces of the transparent ceramic component and the zirconia ceramic component are non-planar structures that can be matched with each other.
  • the connecting surface of the transparent ceramic component and/or the zirconia ceramic component is a rough surface with a roughness of 10 nm-100 ⁇ m.
  • the terminal provided by the embodiment of the present invention has the performance advantages of both transparent ceramics and zirconia ceramics in its shell, which can meet the requirements of optical performance, and at the same time has excellent anti-drop performance of the whole machine, and can be obtained by using colored zirconia ceramics Unique CMF effect enhances user experience.
  • FIG. 1 is a schematic structural diagram of a terminal provided by an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a terminal provided by another embodiment of the present invention.
  • Figure 3 is a schematic structural view of a ceramic structure provided by an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the arrangement of an inorganic transition layer in an embodiment of the present invention.
  • Figure 5 is a schematic structural view of a stepped surface in an embodiment of the present invention.
  • Figure 6 is a schematic diagram of the connection surface is set to a rough surface in an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of the back cover of a ceramic mobile phone in an embodiment of the present invention.
  • Fig. 8 is a schematic diagram of the structure of the back case of a ceramic watch in an embodiment of the present invention.
  • the terminal 200 provided in the embodiment of the present invention may be a mobile phone.
  • the terminal 200 provided in the embodiment of the present invention may also be a watch, but the terminal 200 in the embodiment of the present invention is not limited to a mobile phone and a watch. , It can also be electronic products such as tablet computers, notebooks, laptops, and other smart wearable products.
  • the terminal 200 includes a housing 2.
  • the housing 2 includes a display screen assembled on the front side of the terminal and a back cover assembled on the rear side of the terminal.
  • the display screen includes a display screen cover and a display module arranged inside the display cover.
  • the board and/or the back cover are ceramic structural parts.
  • the housing 2 may further include a middle frame arranged between the display screen and the back cover, and the middle frame may also be a ceramic structure.
  • the ceramic structure 100 is a co-sintered body with an integrated structure, including a transparent ceramic component 10 and a zirconia ceramic component 20, a transparent ceramic component 10 and a zirconia ceramic component connected as a whole 20
  • a transparent ceramic component 10 and a zirconia ceramic component connected as a whole 20
  • the transparent ceramic component 10 and the zirconia ceramic component 20 are connected to form an integrated co-sintered structure.
  • the material of the transparent ceramic component includes transparent ceramic powder, and the transparent ceramic powder can oxide transparent ceramic and/or non-oxide transparent ceramic.
  • oxide transparent ceramics include but are not limited to alumina ceramics, sintered white corundum, magnesium oxide, beryllium oxide, yttrium oxide, yttria-zirconia, magnesium aluminum spinel (MgAl204), yttrium aluminum garnet (YAG)
  • MgAl204 magnesium aluminum spinel
  • YAG yttrium aluminum garnet
  • the non-oxide transparent ceramics including but not limited to aluminum nitride, aluminum oxynitride (A10N/Aron transparent ceramics), aluminum oxynitride magnesium (MgAlON/magnesium Aron transparent ceramics), aluminum oxynitride One or more of silicon (SiAlON/Sialon transparent ceramic).
  • the ceramic raw material constituting the transparent ceramic component not only contains transparent ceramic powder, but may also be doped with some opaque ceramic
  • the ceramic raw material constituting the zirconia ceramic component not only contains zirconia powder, but also can be doped with other inorganic ceramic additives.
  • the connecting surfaces 101 and 201 of the transparent ceramic member 10 and the zirconia ceramic member 20 are in direct contact, and the two are connected to form a seamlessly connected co-sintered body.
  • the connecting surfaces 101 and 201 of the transparent ceramic member 10 and the zirconia ceramic member 20 are in direct contact, and the connecting surface 101 and the zirconia ceramic member 20 are partially connected There is a gap between 201 with a width less than or equal to 0.04mm, and there is no gap between the connecting surfaces 101 and 201 at the remaining positions, and the two are connected to form a micro-slit joint co-sintered body.
  • the gap width at the connection between the transparent ceramic member 10 and the zirconia ceramic member 20 is less than or equal to 0.03 mm. In some embodiments of the present invention, the gap width may also be less than or equal to 0.02 mm. .
  • an inorganic transition layer 30 is provided between the connecting surface 101 of the transparent ceramic member 10 and the connecting surface 201 of the zirconia ceramic member 20, and the transparent ceramic member 10 and the zirconia ceramic member 20 pass The inorganic transition layer 30 is connected as a whole to form a seamless connection.
  • seamless connection can be realized, and because the material of the inorganic transition layer is stable, the stable and effective connection of the two ceramic components can be ensured, and the service life of the ceramic structure can be improved .
  • the inorganic transition layer 30, the transparent ceramic component 10 and the zirconia ceramic component 20 are co-sintered to form a co-sintered body.
  • the material of the inorganic transition layer 30 is a material that can be co-sintered with the transparent ceramic member 10 and the zirconia ceramic member 20 to form an integrated material, including but not limited to transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride , One or more of oxidized titanium.
  • the metal brazing material may be tin-based solder or noble metal-based solder, and specifically may be gold, silver, copper, metal or alloy.
  • the material of the inorganic transition layer 30 includes ceramic raw material powder constituting the transparent ceramic member 10 and ceramic raw material powder constituting the zirconia ceramic member 20. That is, the kind of ceramic powder in the inorganic transition layer is the same as the kind of ceramic raw material powder constituting the transparent ceramic member and the zirconia ceramic member.
  • the ceramic powder types in the inorganic transition layer may only include the main ceramic raw material powder types constituting the transparent ceramic component and the zirconia ceramic component.
  • the content of the ceramic raw material powder constituting the transparent ceramic member gradually decreases, and the ceramic raw material powder constituting the zirconia ceramic member
  • the content gradually increases.
  • the content may change in a gradient.
  • the sintering shrinkage of the inorganic transition layer raw material is between the sintering shrinkage of the transparent ceramic component raw material and the sintering shrinkage of the zirconia ceramic component raw material.
  • the inorganic transition layer 30 may be a single-layer structure or a multi-layer structure, which may be specifically determined according to the preparation process, the properties of the inorganic transition layer, and product requirements.
  • the material of each layer can be the same or different.
  • the multi-layer structure can achieve gradual buffering and reduce the difference in shrinkage and thermal expansion coefficient between the transition layer and the ceramic components on both sides.
  • the thickness of the inorganic transition layer 30 may be determined according to factors such as the volume of the ceramic components of two different materials, the size of the connecting surface, etc., and may specifically be 1 nm-500 um, and further may be 10 nm-100 um.
  • connection surface 101 of the transparent ceramic member and the connection surface 201 of the zirconia ceramic member are set to be mutually compatible.
  • Matching non-planar structure The specific form of the non-planar structure is not limited. For example, it may be provided with mutually matched stepped surfaces as shown in FIG. 5, or may be provided with mutually matched waved surfaces, sawtooth surfaces, etc.
  • connection surface 101 of the transparent ceramic component and/or the connection surface 201 of the zirconia ceramic component Set a rough surface with a certain degree of roughness, and the roughness Ra can be controlled at 10 feet-100 brightness.
  • the rough surface can be obtained by plasma treatment, laser engraving, etching, etc., on the connecting surfaces 101 and 201, of course, other achievable methods can also be used, and the present invention is not particularly limited.
  • connection surface 101 of the transparent ceramic component 10 and the connection surface 201 of the zirconia ceramic component 20 may be a connection surface at any connection location of the transparent ceramic component 10 and the zirconia ceramic component 20.
  • the ceramic structure 100 may include one or more transparent ceramic members 10, and may also include one or more zirconia ceramic members 20.
  • the plurality of transparent ceramic members 10 may have the same or different shapes, and the specific materials may also be the same or different.
  • the plurality of zirconia ceramic members 20 may also have the same or different shapes, and the specific materials may also be the same or different.
  • FIG. 3 of the embodiment of the present invention is only a schematic structural diagram shown for convenience of description, and it does not limit the present invention.
  • the shape and size of the ceramic structure of the embodiment of the present invention, as well as the number and shape of the transparent ceramic components and the zirconia ceramic components can be determined according to the design requirements of specific end products.
  • the ceramic structure can be a 2D planar structure, a 2.5D micro-arc structure, a 3D curved structure and other structural forms.
  • FIG. 7 it is a schematic diagram of the structure of the ceramic mobile phone back cover in a specific embodiment.
  • 210 is a transparent ceramic member
  • 220 is a zirconia ceramic member.
  • the position and shape of the transparent ceramic member The size, function, etc. are not limited.
  • it can be a corresponding camera as a camera window; it can also be used for appearance design effects as a window for displaying the internal structure of the mobile phone.
  • FIG. 8 it is a schematic diagram of a PPG ceramic watch back case in a specific embodiment.
  • 310 is a transparent ceramic member
  • 320 is a zirconia ceramic member
  • the zirconia ceramic member 320 is embedded with two transparent ceramics.
  • Component 310 the transparent ceramic component can be used as a window for detecting human biological signals by photoplethysmography.
  • the position, shape, size, function, etc. of the transparent ceramic member are not limited to this.
  • the zirconia ceramic member is usually arranged on the outer side, and the transparent ceramic member is arranged on the inner side.
  • connection interface between the transparent ceramic member 10 and the zirconia ceramic member 20 may be distinguishable by the naked eye, or indistinguishable by the naked eye, that is, the two ceramic members cannot be distinguished by the naked eye. Obviously connect the interface, but need to observe through optical or electron microscope to distinguish.
  • the ceramic structure provided in the embodiment of the present invention is an integrated structure formed by connecting transparent ceramics and zirconia ceramics through seamless or micro-slits (the gap is less than or equal to 0.04mm), and the bonding between the two ceramic components of different materials is good.
  • the appearance effect is good, the joint can be effectively waterproof and dustproof, and it has the performance advantages of both transparent ceramics and zirconia ceramics, which can simultaneously meet the optical performance, drop resistance and other performances of existing terminal product structures Requirements, can be applied to terminal structures such as terminal housings, specifically terminal structures such as mobile phone front covers, back covers, watch bezels, and rear shells.
  • the terminal provided by the embodiments of the present invention has a shell with the performance advantages of both transparent ceramics and zirconia ceramics. Under meeting the requirements of optical performance, it can also have excellent drop resistance of the whole machine, and by using colored zirconia ceramics, A unique CMF effect can be obtained to enhance user experience.
  • the preparation method of the ceramic structure includes: arranging an inorganic transition layer material between the transparent ceramic blank or component and the pre-connected surface of the zirconia ceramic blank or component, so that the inorganic transition layer material is transparent Ceramic blanks or components are combined, and combined with zirconia ceramic blanks or components, and then co-sintered to obtain ceramics: structural parts; ceramics; structural parts including transparent ceramics connected as a whole; components and zirconia ceramics; components, transparent ceramics
  • An inorganic transition layer is provided between the connecting surfaces of the component and the zirconia ceramic component.
  • the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the zirconia ceramic component are connected at any position There is no gap.
  • the method for setting the inorganic transition layer material includes, but is not limited to, a coating method, an in-mold injection method, a cast inlay method, an in-mold thousand-press method, and a special mold structure design method.
  • the coating method may specifically include spray coating, dip coating, blade coating, brush coating, and the like.
  • the sintering shrinkage of the inorganic transition layer material is between the sintering shrinkage of the transparent ceramic blank or component and the sintering shrinkage of the zirconia ceramic blank or component. between.
  • the method of applying the coating method to set the inorganic transition layer is: placing the transparent ceramic blank or component at a predetermined position in the ceramic structure forming mold, and adding the inorganic transition layer material to a suitable solvent Prepare a slurry, apply the slurry on the connecting surface of the transparent ceramic blank or component that is connected to the zirconia ceramic component, and then set the zirconia ceramic blank or component on the inorganic transition layer material, and then co-sinter it , To obtain a ceramic in which the transparent ceramic component and the zirconia ceramic component are connected as a whole: the structural component, the ceramic obtained in this embodiment; the structural component, the transparent ceramic; the component and the zirconia ceramic; the connection surface between the components is through an inorganic transition The layers form a seamless connection.
  • the zirconia ceramic blank or component may be first placed in a predetermined position in the ceramic structure forming mold, and the inorganic transition layer is set, and then combined with the
  • the ceramic structure forming mold can be made according to the size and contour of the pre-prepared ceramic structure.
  • the transparent ceramic blank or component and the zirconia ceramic blank or component are respectively arranged at predetermined positions in the ceramic structure forming mold, and an inorganic transition layer position is reserved between the connecting surfaces of the two , And then use the in-mold injection method to inject the slurry of the inorganic transition layer material to the position of the inorganic transition layer, and the inorganic transition layer material is combined with the two ceramic blanks or components respectively.
  • the cast-inlay method, the in-mold thousand-press method, etc. to arrange the inorganic transition layer material at the position of the inorganic transition layer.
  • the temperature of the co-sintering can be determined according to specific requirements.
  • the co-sintering can be carried out in a vacuum or a protective atmosphere, and the protective atmosphere can be argon, nitrogen, or the like.
  • the co-firing atmosphere uses vacuum or a non-oxidizing atmosphere such as argon and nitrogen.
  • the preparation method of the ceramic structure includes: placing the transparent ceramic blank or component and the zirconia ceramic blank in a mold, and forming a reserved gap between the two pre-connected connecting surfaces , And then co-sintered to obtain ceramic structural parts; or set the transparent ceramic blank and the zirconia ceramic blank or component in the mold, and form a reserved gap between the pre-connected surfaces of the two, and then co-sinter, Obtain a ceramic structural part; the width of the reserved gap is less than or equal to the difference between the shrinkage of the blank or component located on the outer side and the strand or component located on the inner side in the direction perpendicular to the connecting surface during the co-sintering process; Ceramics; structural parts include transparent ceramics connected as a whole; components and zirconia ceramic components, the transparent ceramic component and the zirconia ceramic component are in direct contact with the connecting surface, and there is no gap at any position of the transparent ceramic component and the zirconia ceramic component.
  • the width of the reserved gap can be designed according to the specific shrinkage of the transparent ceramic blank or component and the zirconia ceramic blank or component during the co-sintering process.
  • the reserved gap can make up for the difference of the different sintering shrinkage produced by the two ceramic parts, so that the two ceramic parts can finally be seamlessly connected.
  • the method for setting the reserved gap includes, but is not limited to, the lost foam method (the gap is filled with mold materials that can be eliminated by the subsequent process), CNC (Computerized Numerical Control Machine) pre-processing method, and special mold structure design By means of law.
  • the preparation method of the ceramic structure includes: setting the transparent ceramic blank or component and the zirconia ceramic blank or component in a mold, and bonding the pre-connected connecting surfaces of the two together, and then Sintering to obtain ceramics; structural parts; ceramics; structural parts including transparent ceramics connected as a whole; a component and a zirconia ceramic component, the transparent ceramic component and the zirconia ceramic component are in direct contact with the connecting surface, the transparent There is no gap in the connection between the ceramic component and the zirconia ceramic component at any position, or there is a gap with a width less than or equal to 0.04 mm at the connection at some positions, and there is no gap at the connection at other positions.
  • the transparent ceramic green body and the zirconia ceramic green body can be set by in-mold injection method, casting inlay method, in-mold thousand-pressure method, and special mold structure design method.
  • the transparent ceramic component is combined with the zirconia ceramic green body.
  • the specific process may be: first put the transparent ceramic component (ie the sintered structural part) into the mold, and then add the zirconia powder to the mold.
  • the two can be basically combined together by pressing together under pressure, and then co-sintered to obtain an integrated ceramic structure.
  • the transparent ceramic component is combined with the zirconia ceramic green body.
  • the specific process can be: first put the transparent ceramic component (ie the sintered structural part) into the mold, and then use the in-mold injection process, The zirconia ceramic slurry is injected into the mold, and after degreasing and debinding, the zirconia ceramic green body is bonded to the transparent ceramic component, and then co-sintered to obtain an integrated ceramic structure.
  • the transparent ceramic green body and the zirconia ceramic green body refer to the state before the ceramic is completely sintered, including the state of the green body after molding and the state of the green body after pre-sintering.
  • Transparent ceramic components and zirconia ceramic components refer to fully sintered ceramics; finished structural parts.
  • the ceramic structure obtained by co-sintering can be processed by common processes of the end product ceramic structure such as CNC, polishing, coating, surface treatment, etc., to obtain the finished end product ceramic structure.

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Abstract

An embodiment of the present invention provides a ceramic structural member, comprising a transparent ceramic component and a zirconia ceramic component connected to form an integrated member. A joining surface of the transparent ceramic component can be in direct contact with a joining surface of the zirconia ceramic component; alternatively, an inorganic transition layer can be disposed between the joining surface of the transparent ceramic component and the joining surface of the zirconia ceramic component, such that the transparent ceramic component and the zirconia ceramic component are integrated via the inorganic transition layer. The join between the transparent ceramic component and the zirconia ceramic component can have no gap thereat; alternatively, a gap having a width less than or equal to 0.04 mm can exist at certain positions of the join between the transparent ceramic component and the zirconia ceramic component, with no gap existing at the remaining positions. The ceramic structural member has the performance advantages of both the transparent ceramic component and the zirconia ceramic component. Moreover, the two ceramic components having different materials form a stable join at the junction thereof, providing a seamless appearance and effective water and dust resistance. Embodiments of the present invention also provide a preparation method of the ceramic structural member and a terminal comprising same.

Description

陶瓷结构件及其制备方法和终端Ceramic structure and preparation method and terminal thereof
本申请要求在2019年4月30日提交中国国家知识产权局、申请号为201910363578.6的中国专利申请的优先权，发明名称为“一种移动终端异质陶瓷结构件的连接方法”的中国专利申请的优先权，在2019年8月31日提交中国国家知识产权局、申请号为201910830365.X的中国专利申请的优先权，发明名称为“陶瓷结构件及其制备方法和终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China with application number 201910363578.6 on April 30, 2019, and a Chinese patent application with the title of "a method for connecting heterogeneous ceramic structures in mobile terminals" The priority of the Chinese patent application filed with the State Intellectual Property Office of China on August 31, 2019, the application number is 201910830365.X, the Chinese patent application with the title of the invention "ceramic structural parts and their preparation methods and terminals" The priority of, the entire content of which is incorporated in this application by reference.
技术领域Technical field
本发明实施例涉及陶瓷制品技术领域，特别是涉及陶瓷结构件及其制备方法和终端。The embodiments of the present invention relate to the technical field of ceramic products, and in particular to ceramic structural parts and their preparation methods and terminals.
背景技术Background technique
透明陶瓷材料耐划伤性能突出(硬度1500-2200Kgf/mm 2)、光学性能优异(透过率≥82％@550nm)，能够基本满足移动终端产品Lens(镜片)的光学要求，可替代玻璃(硬度～650Kgf/mm 2)成为移动终端产品的新一代Lens材料，如智能手表后壳PPG(PhotoPlethysmoGraphy，光电容积脉搏波描记法)Lens。 Transparent ceramic material has outstanding scratch resistance (hardness 1500-2200Kgf/mm 2 ) and excellent optical performance (transmittance ≥82%@550nm), which can basically meet the optical requirements of mobile terminal products Lens (lens), and can replace glass ( Hardness ~650Kgf/mm 2 ) has become a new-generation Lens material for mobile terminal products, such as PPG (PhotoPlethysmoGraphy, PhotoplethysmoGraphy) Lens for the back shell of smart watches.
氧化锆陶瓷材料具备较高的弯曲强度(1000-1200MPa)和断裂韧性(≥7MPa/m 2)，其作为移动终端产品的结构件，单体、整机机械可靠性较好，尤其整机抗跌落性能优异，并且通过向氧化锆陶瓷粉体中掺杂稀土或过渡金属氧化物，可获得彩色氧化锆陶瓷，赋予氧化锆陶瓷结构件独特的CMF(Color,Material&Finishing；颜色，材料和表面处理)效果。 Zirconia ceramic material has high bending strength (1000-1200MPa) and fracture toughness (≥7MPa/m 2 ). As a structural part of mobile terminal products, the single unit and the whole machine have good mechanical reliability, especially the resistance of the whole machine. Excellent drop performance, and by doping rare earth or transition metal oxides into zirconia ceramic powder, colored zirconia ceramics can be obtained, giving zirconia ceramic structures unique CMF (Color, Material &Finishing; color, material and surface treatment) effect.
为充分发挥透明陶瓷材料和氧化锆陶瓷材料各自的优势，需要寻找可行的技术方案，使透明陶瓷与氧化锆陶瓷形成可靠接合，实现结构一体化。In order to give full play to the respective advantages of transparent ceramic materials and zirconia ceramic materials, it is necessary to find feasible technical solutions to form a reliable joint between transparent ceramics and zirconia ceramics and achieve structural integration.
发明内容Summary of the invention
鉴于此，本发明实施例提供一种陶瓷结构件，包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，其兼具透明陶瓷和氧化锆陶瓷两者的性能优势，且两不同材质陶瓷构件连接处结合稳定，具有无缝外观效果，可有效防水、防尘，以在一定程度上解决现有不同材质陶瓷构件采用胶黏剂连接导致的间隙外观、老化脱胶及防水性差的问题。In view of this, an embodiment of the present invention provides a ceramic structural component, including a transparent ceramic component and a zirconia ceramic component that are connected as a whole, which has the performance advantages of both the transparent ceramic and the zirconia ceramic, and the two ceramic components of different materials are connected The joint is stable, has a seamless appearance effect, can effectively waterproof and dustproof, to a certain extent solve the gap appearance, aging degumming and poor waterproofness caused by the use of adhesive to connect the existing ceramic components of different materials.
具体地，本发明实施例第一方面提供一种陶瓷结构件，包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，或者所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，所述透明陶瓷构件与所述氧化锆陶瓷构件通过所述无机过渡层连接为一体；所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。Specifically, the first aspect of the embodiments of the present invention provides a ceramic structural component, including a transparent ceramic component and a zirconia ceramic component that are connected as a whole, and the connection surfaces of the transparent ceramic component and the zirconia ceramic component are in direct contact , Or an inorganic transition layer is provided between the connecting surfaces of the transparent ceramic component and the zirconia ceramic component, and the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; There is no gap in the connection between the transparent ceramic component and the zirconia ceramic component at any position, or there is a gap with a width of less than or equal to 0.04 mm at a part of the connection, and there is no gap in the connection at the other positions.
本发明实施方式中，所述透明陶瓷构件和所述氧化锆陶瓷构件的部分位置连接处具有宽度小于或等于0.03mm的缝隙，其余位置连接处无缝隙。In the embodiment of the present invention, part of the connection between the transparent ceramic member and the zirconia ceramic member has a gap with a width less than or equal to 0.03 mm, and there is no gap at the connection at the remaining positions.
本发明实施方式中，所述无机过渡层的材料包括透明陶瓷粉末、氧化锆陶瓷粉末、金属钎焊料、氧化硼、氮化硅、氧化钛中的一种或多种。In the embodiment of the present invention, the material of the inorganic transition layer includes one or more of transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide.
本发明实施方式中，所述无机过渡层的材料包括构成所述透明陶瓷构件的陶瓷原料粉末和构成所述氧化锆陶瓷构件的陶瓷原料粉末。In the embodiment of the present invention, the material of the inorganic transition layer includes ceramic raw material powder constituting the transparent ceramic member and ceramic raw material powder constituting the zirconia ceramic member.
本发明实施方式中，所述无机过渡层中，自所述透明陶瓷构件一侧向所述氧化锆陶瓷构件一侧，所述构成透明陶瓷构件的陶瓷原料粉末的含量逐渐减小，所述构成氧化锆陶瓷构件的陶瓷原料粉末的含量逐渐增大。In the embodiment of the present invention, in the inorganic transition layer, from the side of the transparent ceramic member to the side of the zirconia ceramic member, the content of the ceramic raw material powder constituting the transparent ceramic member gradually decreases, and the composition The content of ceramic raw material powder of zirconia ceramic components gradually increases.
本发明实施方式中，所述陶瓷结构件为共烧结体，在共烧结制备所述陶瓷结构件的过程中，所述无机过渡层原料的烧结收缩量介于所述透明陶瓷构件原料的烧结收缩量和所述氧化锆陶瓷构件原料的烧结收缩量之间。In the embodiment of the present invention, the ceramic structure is a co-sintered body. In the process of preparing the ceramic structure by co-sintering, the sintering shrinkage of the raw material of the inorganic transition layer is within the sintering shrinkage of the raw material of the transparent ceramic component. And the sintering shrinkage of the zirconia ceramic component raw material.
本发明实施方式中，所述无机过渡层为单层或多层结构。In the embodiment of the present invention, the inorganic transition layer has a single-layer or multi-layer structure.
本发明实施方式中，所述无机过渡层的厚度为1nm-500μm。In the embodiment of the present invention, the thickness of the inorganic transition layer is 1 nm-500 μm.
本发明实施方式中，所述透明陶瓷构件和所述氧化锆陶瓷构件两者的连接面为可相互配合的非平面结构。In the embodiment of the present invention, the connecting surfaces of the transparent ceramic component and the zirconia ceramic component are non-planar structures that can be matched with each other.
本发明实施方式中，所述透明陶瓷构件和/或所述氧化锆陶瓷构件的连接面为粗糙面，粗糙度为10nm-100μm。In the embodiment of the present invention, the connecting surface of the transparent ceramic component and/or the zirconia ceramic component is a rough surface with a roughness of 10 nm-100 μm.
本发明实施方式中，所述陶瓷结构件为终端壳体。In the embodiment of the present invention, the ceramic structure is a terminal housing.
本发明实施例第一方面提供的陶瓷结构件，为透明陶瓷和氧化锆陶瓷通过无缝或微缝(缝隙小于或等于0.04mm)连接形成的一体化结构件，两不同材质陶瓷构件之间结合性好，外观效果佳，连接处可有效防水、防尘，且其兼具透明陶瓷和氧化锆陶瓷两者的性能优势，可同时满足现有终端产品结构件对光学性能、抗跌落性能等各方面性能要求，可应用于终端壳体等终端结构件，具体可以是手机前盖、后盖、手表表圈、后壳等终端结构件。The ceramic structural part provided by the first aspect of the embodiment of the present invention is an integrated structural part formed by seamless or micro-slit (gap less than or equal to 0.04mm) connection of transparent ceramics and zirconia ceramics. Two ceramic parts of different materials are combined Good performance, good appearance, the joint can be effectively waterproof and dustproof, and it has the performance advantages of both transparent ceramics and zirconia ceramics, which can simultaneously meet the optical performance and drop resistance of existing terminal product structures. In terms of performance requirements, it can be applied to terminal structures such as terminal housings, specifically terminal structures such as mobile phone front covers, back covers, watch bezels, and rear cases.
本发明实施例第二方面提供一种陶瓷结构件的制备方法，包括：The second aspect of the embodiments of the present invention provides a method for preparing a ceramic structural member, including:
在透明陶瓷素坯或构件与氧化锆陶瓷素坯或构件预连接的连接面之间设置无机过渡层材料，使所述无机过渡层材料与所述透明陶瓷素坯或构件结合，以及与所述氧化锆陶瓷素坯或构件结合，然后共烧结，得到陶瓷结构件；An inorganic transition layer material is arranged between the transparent ceramic blank or component and the connecting surface of the zirconia ceramic blank or component, so that the inorganic transition layer material is combined with the transparent ceramic blank or component, and with the Zirconia ceramic blanks or components are combined and then co-sintered to obtain ceramic structural parts;
所述陶瓷结构件包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，所述透明陶瓷构件与所述氧化锆陶瓷构件通过所述无机过渡层连接为一体；所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙。The ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, an inorganic transition layer is arranged between the connection surfaces of the transparent ceramic component and the zirconia ceramic component, and the transparent ceramic component is connected to the zirconia ceramic component. The zirconia ceramic component is connected as a whole through the inorganic transition layer; there is no gap in the connection between the transparent ceramic component and the zirconia ceramic component at any position.
本发明实施方式中，所述无机过渡层材料包括透明陶瓷粉末、氧化锆陶瓷粉末、金属钎焊料、氧化硼、氮化硅、氧化钛中的一种或多种。In the embodiment of the present invention, the inorganic transition layer material includes one or more of transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide.
本发明实施例第三方面还提供一种陶瓷结构件的制备方法，包括：The third aspect of the embodiments of the present invention also provides a method for preparing a ceramic structure, including:
将透明陶瓷素坯或构件与氧化锆陶瓷素坯设于模具中，并使两者预连接的连接面之间形成一预留间隙，然后共烧结，得到陶瓷结构件；Set the transparent ceramic blank or component and the zirconia ceramic blank in the mold, and form a reserved gap between the pre-connected connecting surfaces of the two, and then co-sinter to obtain the ceramic structure;
或者将透明陶瓷素坯与氧化锆陶瓷素坯或构件设于模具中，并使两者预连接的连接面之间形成一预留间隙，然后共烧结，得到陶瓷结构件；Or set the transparent ceramic blank and the zirconia ceramic blank or component in the mold, and form a reserved gap between the pre-connected connecting surfaces of the two, and then co-sinter to obtain the ceramic structure;
所述预留间隙的宽度小于或等于在所述共烧结过程中，位于外侧的素坯或构件与位于内侧的素坯或构件在垂直于连接面方向上的收缩量的差值；The width of the reserved gap is less than or equal to the difference between the shrinkage of the blank or member located on the outer side and the blank or member located on the inner side in the direction perpendicular to the connecting surface during the co-sintering process;
所述陶瓷结构件包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。The ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, the transparent ceramic component is in direct contact with the connecting surface of the zirconia ceramic component, the transparent ceramic component and the zirconia ceramic There is no gap in the connection at any position of the component, or there is a gap with a width of less than or equal to 0.04mm in the connection at some positions, and there is no gap in the connection at other positions.
本发明实施例第四方面还提供一种陶瓷结构件的制备方法，包括：The fourth aspect of the embodiments of the present invention also provides a method for preparing a ceramic structure, including:
将透明陶瓷素坯或构件与氧化锆陶瓷素坯或构件设于模具中，并使两者预连接的连接面 贴合，然后共烧结，得到陶瓷结构件；Set the transparent ceramic blank or component and the zirconia ceramic blank or component in the mold, and make the joint surfaces of the two pre-connected joints, and then co-sintered to obtain the ceramic structure;
所述陶瓷结构件包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。The ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, the transparent ceramic component is in direct contact with the connecting surface of the zirconia ceramic component, the transparent ceramic component and the zirconia ceramic There is no gap in the connection at any position of the component, or there is a gap with a width of less than or equal to 0.04mm in the connection at some positions, and there is no gap in the connection at other positions.
本发明实施例上述提供的陶瓷结构件的制备方法，工艺简单易控制，可实现工业化生产。The method for preparing the ceramic structural member provided above in the embodiment of the present invention has simple process and easy control, and can realize industrialized production.
另外，本发明实施例还提供一种终端，所述终端包括外壳，所述外壳包括组装在终端前侧的显示屏和组装在终端后侧的后盖，所述显示屏包括显示屏盖板和设置于显示屏盖板内侧的显示模组，所述显示屏盖板和/或所述后盖为本发明实施例提供的陶瓷结构件，显示屏盖板和/或后盖包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，或者所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，所述透明陶瓷构件与所述氧化锆陶瓷构件通过所述无机过渡层连接为一体；所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。In addition, an embodiment of the present invention also provides a terminal, the terminal includes a housing, the housing includes a display screen assembled on the front side of the terminal and a back cover assembled on the rear side of the terminal, the display screen includes a display cover and The display module is arranged on the inner side of the display screen cover, the display screen cover and/or the back cover are ceramic structural parts provided by the embodiments of the present invention, and the display screen cover and/or the back cover include integrated A transparent ceramic component and a zirconia ceramic component, the transparent ceramic component is in direct contact with the connection surface of the zirconia ceramic component, or the connection surface of the transparent ceramic component and the zirconia ceramic component is arranged between Inorganic transition layer, the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the zirconia ceramic component are connected at any position without a gap, or partly connected There is a gap with a width less than or equal to 0.04mm, and there is no gap in the connection at the other positions.
本发明实施方式中，所述外壳还包括位于所述显示屏和所述后盖之间的中框，所述中框也可以是本发明实施例提供的陶瓷结构件，中框包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，或者所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，所述透明陶瓷构件与所述氧化锆陶瓷构件通过所述无机过渡层连接为一体；所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。In the embodiment of the present invention, the housing further includes a middle frame located between the display screen and the back cover. The middle frame may also be a ceramic structural member provided in an embodiment of the present invention. The transparent ceramic member and the zirconia ceramic member, the connection surface of the transparent ceramic member and the zirconia ceramic member is in direct contact, or the connection surface between the transparent ceramic member and the zirconia ceramic member An inorganic transition layer is provided, and the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the zirconia ceramic component are seamlessly connected at any position, or part of the position The connection has a gap with a width less than or equal to 0.04mm, and there is no gap in the connection at other positions.
本发明实施方式中，所述透明陶瓷构件和所述氧化锆陶瓷构件的部分位置连接处具有宽度小于或等于0.03mm的缝隙，其余位置连接处无缝隙。In the embodiment of the present invention, part of the connection between the transparent ceramic member and the zirconia ceramic member has a gap with a width less than or equal to 0.03 mm, and there is no gap at the connection at the remaining positions.
本发明实施方式中，所述无机过渡层的材料包括透明陶瓷粉末、氧化锆陶瓷粉末、金属钎焊料、氧化硼、氮化硅、氧化钛中的一种或多种。In the embodiment of the present invention, the material of the inorganic transition layer includes one or more of transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide.
本发明实施方式中，所述无机过渡层的材料包括构成所述透明陶瓷构件的陶瓷原料粉末和构成所述氧化锆陶瓷构件的陶瓷原料粉末。In the embodiment of the present invention, the material of the inorganic transition layer includes ceramic raw material powder constituting the transparent ceramic member and ceramic raw material powder constituting the zirconia ceramic member.
本发明实施方式中，所述无机过渡层中，自所述透明陶瓷构件一侧向所述氧化锆陶瓷构件一侧，所述构成透明陶瓷构件的陶瓷原料粉末的含量逐渐减小，所述构成氧化锆陶瓷构件的陶瓷原料粉末的含量逐渐增大。In the embodiment of the present invention, in the inorganic transition layer, from the side of the transparent ceramic member to the side of the zirconia ceramic member, the content of the ceramic raw material powder constituting the transparent ceramic member gradually decreases, and the composition The content of ceramic raw material powder of zirconia ceramic components gradually increases.
本发明实施方式中，所述无机过渡层为单层或多层结构。In the embodiment of the present invention, the inorganic transition layer has a single-layer or multi-layer structure.
本发明实施方式中，所述无机过渡层的厚度为1nm-500μm。In the embodiment of the present invention, the thickness of the inorganic transition layer is 1 nm-500 μm.
本发明实施方式中，所述透明陶瓷构件和所述氧化锆陶瓷构件两者的连接面为可相互配合的非平面结构。In the embodiment of the present invention, the connecting surfaces of the transparent ceramic component and the zirconia ceramic component are non-planar structures that can be matched with each other.
本发明实施方式中，所述透明陶瓷构件和/或所述氧化锆陶瓷构件的连接面为粗糙面，粗糙度为10nm-100μm。In the embodiment of the present invention, the connecting surface of the transparent ceramic component and/or the zirconia ceramic component is a rough surface with a roughness of 10 nm-100 μm.
本发明实施例提供的终端，其外壳兼具透明陶瓷和氧化锆陶瓷两者的性能优势，可满足光学性能要求，同时具有优异的整机抗跌落性能，且通过采用彩色氧化锆陶瓷，可以获得独特的CMF效果，提升用户体验。The terminal provided by the embodiment of the present invention has the performance advantages of both transparent ceramics and zirconia ceramics in its shell, which can meet the requirements of optical performance, and at the same time has excellent anti-drop performance of the whole machine, and can be obtained by using colored zirconia ceramics Unique CMF effect enhances user experience.
附图说明Description of the drawings
图1为本发明一实施例提供的终端的结构示意图；FIG. 1 is a schematic structural diagram of a terminal provided by an embodiment of the present invention;
图2为本发明另一实施例提供的终端的结构示意图；FIG. 2 is a schematic structural diagram of a terminal provided by another embodiment of the present invention;
图3为本发明实施例提供的陶瓷结构件的结构示意图; Figure 3 is a schematic structural view of a ceramic structure provided by an embodiment of the present invention;
图4为本发明实施例中无机过渡层的设置示意图；4 is a schematic diagram of the arrangement of an inorganic transition layer in an embodiment of the present invention;
图5为本发明实施例中连接面为台阶面的结构示意图; Figure 5 is a schematic structural view of a stepped surface in an embodiment of the present invention;
图6为本发明实施例中连接面设置为粗糙面的示意图; Figure 6 is a schematic diagram of the connection surface is set to a rough surface in an embodiment of the present invention;
图7为本发明实施例中陶瓷手机后盖的结构示意图；FIG. 7 is a schematic structural diagram of the back cover of a ceramic mobile phone in an embodiment of the present invention;
图8为本发明实施例中陶瓷手表后壳的结构示意图。Fig. 8 is a schematic diagram of the structure of the back case of a ceramic watch in an embodiment of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例进行说明。The embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention.
如图1所示，本发明实施例提供的终端200可以是手机，如图2所示，本发明实施例提供的终端200也可以是手表，但本发明实施例的终端200不限于手机和手表，还可以是平板电脑、笔记本、便携机、其他智能穿戴产品等电子产品。终端200包括外壳2，外壳2包括组装在终端前侧的显示屏和组装在终端后侧的后盖，显示屏包括显示屏盖板和设置于显示屏盖板内侧的显示模组，显示屏盖板和/或后盖为陶瓷结构件。本发明实施方式中，外壳2还可以包括设置于显示屏和后盖之间的中框，中框也可以是陶瓷结构件。 As shown in FIG. 1, the terminal 200 provided in the embodiment of the present invention may be a mobile phone. As shown in FIG. 2, the terminal 200 provided in the embodiment of the present invention may also be a watch, but the terminal 200 in the embodiment of the present invention is not limited to a mobile phone and a watch. , It can also be electronic products such as tablet computers, notebooks, laptops, and other smart wearable products. The terminal 200 includes a housing 2. The housing 2 includes a display screen assembled on the front side of the terminal and a back cover assembled on the rear side of the terminal. The display screen includes a display screen cover and a display module arranged inside the display cover. The board and/or the back cover are ceramic structural parts. In the embodiment of the present invention, the housing 2 may further include a middle frame arranged between the display screen and the back cover, and the middle frame may also be a ceramic structure.
请参见图3,本发明实施方式中，陶瓷结构件100为共烧结体，具有一体化结构，包括连接为一体的透明陶瓷构件10和氧化锆陶瓷构件20，透明陶瓷构件10和氧化锆陶瓷构件20两者的任意位置连接处无缝隙，即形成无缝连接，或者两者的部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙，即形成微缝连接。 3, in the embodiment of the present invention, the ceramic structure 100 is a co-sintered body with an integrated structure, including a transparent ceramic component 10 and a zirconia ceramic component 20, a transparent ceramic component 10 and a zirconia ceramic component connected as a whole 20 There is no gap in the connection between the two at any position, that is, a seamless connection is formed, or there is a gap with a width less than or equal to 0.04mm at the connection of part of the two positions, and there is no gap in the connection at the other positions, that is, a micro-slit connection is formed.
本发明实施方式中，透明陶瓷构件10与氧化锆陶瓷构件20连接形成一体共烧结结构件，两不同材质陶瓷构件的连接界面无缝隙，或者仅在局部连接界面存在宽度小于或等于0.04mm的缝隙，整个连接界面不存在宽度大于0.04mm的缝隙，因而形成了高强度结合，可以有效提高陶瓷结构件的机械可靠性，以及提高连接处的防水防尘性能，同时提升外观效果。 In the embodiment of the present invention, the transparent ceramic component 10 and the zirconia ceramic component 20 are connected to form an integrated co-sintered structure. There is no gap in the connection interface of the two different material ceramic components, or there is only a gap with a width less than or equal to 0.04 mm at the local connection interface. , There is no gap greater than 0.04mm in the entire connection interface, thus forming a high-strength bond, which can effectively improve the mechanical reliability of the ceramic structure, and improve the waterproof and dustproof performance of the connection, while improving the appearance effect.
本发明实施方式中，透明陶瓷构件的材料包括透明陶瓷粉末，透明陶瓷粉末可氧化物透明陶瓷和/或非氧化物透明陶瓷。其中，氧化物透明陶瓷包括但不限于氧化铝陶瓷、烧结白刚玉、氧化镁、氧化铍、氧化钇、氧化钇-二氧化锆、镁铝尖晶石（MgAl204）、钇铝石榴石（YAG）中的一种或多种；非氧化物透明陶瓷包括但不限于氮化铝、氮氧化铝（A10N/阿隆透明陶瓷）、氮氧化铝镁（MgAlON/镁阿隆透明陶瓷）、氮氧化铝硅（SiAlON/塞隆透明陶瓷）中的一种或多种。通常，为了提升透明陶瓷构件的各方面性能，构成透明陶瓷构件的陶瓷原料不仅包含透明陶瓷粉末，还可能掺杂一些非透明陶瓷粉末，以及其它一些无机陶瓷添加剂。 In the embodiment of the present invention, the material of the transparent ceramic component includes transparent ceramic powder, and the transparent ceramic powder can oxide transparent ceramic and/or non-oxide transparent ceramic. Among them, oxide transparent ceramics include but are not limited to alumina ceramics, sintered white corundum, magnesium oxide, beryllium oxide, yttrium oxide, yttria-zirconia, magnesium aluminum spinel (MgAl204), yttrium aluminum garnet (YAG) One or more of the non-oxide transparent ceramics, including but not limited to aluminum nitride, aluminum oxynitride (A10N/Aron transparent ceramics), aluminum oxynitride magnesium (MgAlON/magnesium Aron transparent ceramics), aluminum oxynitride One or more of silicon (SiAlON/Sialon transparent ceramic). Generally, in order to improve all aspects of the performance of the transparent ceramic component, the ceramic raw material constituting the transparent ceramic component not only contains transparent ceramic powder, but may also be doped with some opaque ceramic powder and other inorganic ceramic additives.
同样，构成氧化锆陶瓷构件的陶瓷原料不仅包含氧化锆粉末，还可以掺杂其它一些无机陶瓷添加剂。 Similarly, the ceramic raw material constituting the zirconia ceramic component not only contains zirconia powder, but also can be doped with other inorganic ceramic additives.
本发明一实施方式中，透明陶瓷构件10与氧化锆陶瓷构件20两者的连接面101、201直接接触，两者连接为一体形成无缝连接的共烧结体。 In one embodiment of the present invention, the connecting surfaces 101 and 201 of the transparent ceramic member 10 and the zirconia ceramic member 20 are in direct contact, and the two are connected to form a seamlessly connected co-sintered body.
本发明另一实施方式中，透明陶瓷构件10与氧化锆陶瓷构件20两者的连接面101、201直接接触，在透明陶瓷构件10与氧化锆陶瓷构件20的部分位置连接处，连接面101与201之间具有宽度小于或等于0.04mm的缝隙，而其余位置处连接面101与201之间无缝隙，两者连接为一体形成微:缝连接的共烧结体。 In another embodiment of the present invention, the connecting surfaces 101 and 201 of the transparent ceramic member 10 and the zirconia ceramic member 20 are in direct contact, and the connecting surface 101 and the zirconia ceramic member 20 are partially connected There is a gap between 201 with a width less than or equal to 0.04mm, and there is no gap between the connecting surfaces 101 and 201 at the remaining positions, and the two are connected to form a micro-slit joint co-sintered body.
本发明一些实施方式中，透明陶瓷构件10和氧化锆陶瓷构件20两者的部分位置连接处的缝隙宽度小于或等于0.03mm,在本发明一些实施方式中，缝隙宽度也可以小于或等于0.02mm。 In some embodiments of the present invention, the gap width at the connection between the transparent ceramic member 10 and the zirconia ceramic member 20 is less than or equal to 0.03 mm. In some embodiments of the present invention, the gap width may also be less than or equal to 0.02 mm. .
本发明一实施方式中，如图4所示，透明陶瓷构件10的连接面101与氧化锆陶瓷构件20的连接面201之间设置无机过渡层30,透明陶瓷构件10与氧化锆陶瓷构件20通过无机过渡层30连接为一体，形成无缝连接。本发明实施例通过在两不同材质陶瓷构件之间设置无机过渡层，可以实现无缝连接，且由于无机过渡层材料性质稳定，能够保证两陶瓷构件的稳定有效连接，提高陶瓷结构件的使用寿命。 In one embodiment of the present invention, as shown in FIG. 4, an inorganic transition layer 30 is provided between the connecting surface 101 of the transparent ceramic member 10 and the connecting surface 201 of the zirconia ceramic member 20, and the transparent ceramic member 10 and the zirconia ceramic member 20 pass The inorganic transition layer 30 is connected as a whole to form a seamless connection. In the embodiment of the present invention, by arranging an inorganic transition layer between two ceramic components of different materials, seamless connection can be realized, and because the material of the inorganic transition layer is stable, the stable and effective connection of the two ceramic components can be ensured, and the service life of the ceramic structure can be improved .
本发明实施方式中，无机过渡层30与透明陶瓷构件10与氧化锆陶瓷构件20经共烧结形成一共烧结体。无机过渡层30的材料为能与透明陶瓷构件10与氧化锆陶瓷构件20共烧结形成一体的材料，包括但不限于透明陶瓷粉末、氧化锆陶瓷粉末、金属钎焊料、氧化硼、氮化硅、氧化钦中的一种或多种。金属钎焊料可以是锡基焊料或贵金属基焊料，具体可以是金、银、铜、金属或合金。 In the embodiment of the present invention, the inorganic transition layer 30, the transparent ceramic component 10 and the zirconia ceramic component 20 are co-sintered to form a co-sintered body. The material of the inorganic transition layer 30 is a material that can be co-sintered with the transparent ceramic member 10 and the zirconia ceramic member 20 to form an integrated material, including but not limited to transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride , One or more of oxidized titanium. The metal brazing material may be tin-based solder or noble metal-based solder, and specifically may be gold, silver, copper, metal or alloy.
本发明一具体实施方式中，无机过渡层30的材料包括构成透明陶瓷构件10的陶瓷原料粉末和构成氧化锆陶瓷构件20的陶瓷原料粉末。即无机过渡层中的陶瓷粉末种类与构成透明陶瓷构件和构成氧化锆陶瓷构件的陶瓷原料粉末种类相同。当然在某一些实施例中，也可以是无机过渡层中的陶瓷粉末种类仅包含构成透明陶瓷构件和构成氧化锆陶瓷构件的主要陶瓷原料粉末种类。 In a specific embodiment of the present invention, the material of the inorganic transition layer 30 includes ceramic raw material powder constituting the transparent ceramic member 10 and ceramic raw material powder constituting the zirconia ceramic member 20. That is, the kind of ceramic powder in the inorganic transition layer is the same as the kind of ceramic raw material powder constituting the transparent ceramic member and the zirconia ceramic member. Of course, in certain embodiments, the ceramic powder types in the inorganic transition layer may only include the main ceramic raw material powder types constituting the transparent ceramic component and the zirconia ceramic component.
本发明实施方式中，无机过渡层中，自透明陶瓷构件10—侧向氧化锆陶瓷构件20—侧，构成透明陶瓷构件的陶瓷原料粉末的含量逐渐减小，构成氧化锆陶瓷构件的陶瓷原料粉末的含量逐渐增大。具体地，含量可以是呈梯度变化。 In the embodiment of the present invention, in the inorganic transition layer, from the transparent ceramic member 10 to the zirconia ceramic member 20, the content of the ceramic raw material powder constituting the transparent ceramic member gradually decreases, and the ceramic raw material powder constituting the zirconia ceramic member The content gradually increases. Specifically, the content may change in a gradient.
本发明实施方式中，在共烧结制备陶瓷结构件的过程中，无机过渡层原料的烧结收缩量介于透明陶瓷构件原料的烧结收缩量和氧化锆陶瓷构件原料的烧结收缩量之间。选择具有适合收缩量的无机过渡层原料能够有效平衡透明陶瓷构件10与氧化锆陶瓷构件20的收缩量差异，避免构件边缘无法对齐引起的外观间隙以及界面开裂风险，提升产品性能和外观效果。 In the embodiment of the present invention, in the process of co-sintering to prepare the ceramic structure, the sintering shrinkage of the inorganic transition layer raw material is between the sintering shrinkage of the transparent ceramic component raw material and the sintering shrinkage of the zirconia ceramic component raw material. Choosing an inorganic transition layer material with a suitable shrinkage can effectively balance the difference in shrinkage between the transparent ceramic component 10 and the zirconia ceramic component 20, avoid the appearance gap and the risk of interface cracking caused by the unaligned edges of the component, and improve the product performance and appearance effect.
本发明实施方式中，无机过渡层30可以是单层结构，也可以是多层结构，具体可根据制备工艺，无机过渡层性质、产品需求等而定。当为多层结构时，每一层的材质可以相同，也可以不同。多层结构可以实现渐变缓冲，减小过渡层与两侧陶瓷构件的收缩率、热膨胀系数的差异。 In the embodiment of the present invention, the inorganic transition layer 30 may be a single-layer structure or a multi-layer structure, which may be specifically determined according to the preparation process, the properties of the inorganic transition layer, and product requirements. When it is a multilayer structure, the material of each layer can be the same or different. The multi-layer structure can achieve gradual buffering and reduce the difference in shrinkage and thermal expansion coefficient between the transition layer and the ceramic components on both sides.
本发明实施方式中，无机过渡层30的厚度可根据两不同材质陶瓷构件的体积，连接面大小等因素而定，具体可以为1nm-500um，进一步可以是10nm-100um。 In the embodiment of the present invention, the thickness of the inorganic transition layer 30 may be determined according to factors such as the volume of the ceramic components of two different materials, the size of the connecting surface, etc., and may specifically be 1 nm-500 um, and further may be 10 nm-100 um.
为了增大透明陶瓷构件和氧化锆陶瓷构件两者之间的接触面积以提高结合力，本发明实施方式中，将透明陶瓷构件的连接面101和氧化锆陶瓷构件的连接面201设为可相互配合的非平面结构。其中，非平面结构的具体形式不限，例如，可以是设置如图5所示的相互配合的台阶面，也可以是设置相互配合的波形面、锯齿面等。 In order to increase the contact area between the transparent ceramic member and the zirconia ceramic member to improve the bonding force, in the embodiment of the present invention, the connection surface 101 of the transparent ceramic member and the connection surface 201 of the zirconia ceramic member are set to be mutually compatible. Matching non-planar structure. The specific form of the non-planar structure is not limited. For example, it may be provided with mutually matched stepped surfaces as shown in FIG. 5, or may be provided with mutually matched waved surfaces, sawtooth surfaces, etc.
为了增强透明陶瓷构件和氧化锆陶瓷构件两者之间的结合力，如图6所示，本发明实施方式中，可将透明陶瓷构件的连接面101和/或氧化锆陶瓷构件的连接面201设为具有一定粗糙度的粗糙面，粗糙度Ra可控制在10腿-100晖。本发明实施方式中，粗糙面可通过对连接面101、201进行等离子体处理、镭雕、蚀刻等方式获得，当然也可使用其他可实现的方式，本发明不作特殊限定。 In order to enhance the bonding force between the transparent ceramic component and the zirconia ceramic component, as shown in FIG. 6, in the embodiment of the present invention, the connection surface 101 of the transparent ceramic component and/or the connection surface 201 of the zirconia ceramic component Set a rough surface with a certain degree of roughness, and the roughness Ra can be controlled at 10 feet-100 brightness. In the embodiment of the present invention, the rough surface can be obtained by plasma treatment, laser engraving, etching, etc., on the connecting surfaces 101 and 201, of course, other achievable methods can also be used, and the present invention is not particularly limited.
本发明实施例中，透明陶瓷构件10的连接面101与氧化锆陶瓷构件20的连接面201可以是透明陶瓷构件10与氧化锆陶瓷构件20任意连接处的连接面。 In the embodiment of the present invention, the connection surface 101 of the transparent ceramic component 10 and the connection surface 201 of the zirconia ceramic component 20 may be a connection surface at any connection location of the transparent ceramic component 10 and the zirconia ceramic component 20.
本发明实施例中，陶瓷结构件100可以包括一个或多个透明陶瓷构件10，也可以包括一个或多个氧化锆陶瓷构件20。多个透明陶瓷构件10可以是相同或不同形状，具体材质也可以相同或不同，同样，多个氧化锆陶瓷构件20也可以是相同或不同形状，具体材质也可以相同或不同。 In the embodiment of the present invention, the ceramic structure 100 may include one or more transparent ceramic members 10, and may also include one or more zirconia ceramic members 20. The plurality of transparent ceramic members 10 may have the same or different shapes, and the specific materials may also be the same or different. Similarly, the plurality of zirconia ceramic members 20 may also have the same or different shapes, and the specific materials may also be the same or different.
应该说明的是，本发明实施例图3仅为方便陈述而示出的结构示意图，其并不能对本发明构成限制。本发明实施例陶瓷结构件的形状尺寸，以及透明陶瓷构件与氧化锆陶瓷构件的数量、形状等可根据具体终端产品的设计要求而定。陶瓷结构件可以是2D平面结构、2.5D微弧结构、3D曲面结构等结构形式。如图7所示，为一具体实施方式中，陶瓷手机后盖的结构示意图，图中210为透明陶瓷构件，220为氧化锆陶瓷构件，在手机后盖中，透明陶瓷构件的设置位置、形状尺寸、功能等不限，例如可以是对应摄像头，作为摄像头窗口；也可以是为了外观设计效果，作为展示手机内部构造的窗口等。如图8所示，为一具体实施方式中，PPG陶瓷手表后壳的结构示意图，图中310为透明陶瓷构件，320为氧化锆陶瓷构件，氧化锆陶瓷构件320中嵌设有两个透明陶瓷构件310。其中，透明陶瓷构件可以作为采用光电容积脉搏波描记法侦测人体生物信号的窗口。同样，在手表后壳中，透明陶瓷构件的设置位置、形状尺寸、功能等也不限于此。 It should be noted that FIG. 3 of the embodiment of the present invention is only a schematic structural diagram shown for convenience of description, and it does not limit the present invention. The shape and size of the ceramic structure of the embodiment of the present invention, as well as the number and shape of the transparent ceramic components and the zirconia ceramic components can be determined according to the design requirements of specific end products. The ceramic structure can be a 2D planar structure, a 2.5D micro-arc structure, a 3D curved structure and other structural forms. As shown in FIG. 7, it is a schematic diagram of the structure of the ceramic mobile phone back cover in a specific embodiment. In the figure, 210 is a transparent ceramic member, and 220 is a zirconia ceramic member. In the mobile phone back cover, the position and shape of the transparent ceramic member The size, function, etc. are not limited. For example, it can be a corresponding camera as a camera window; it can also be used for appearance design effects as a window for displaying the internal structure of the mobile phone. As shown in FIG. 8, it is a schematic diagram of a PPG ceramic watch back case in a specific embodiment. In the figure, 310 is a transparent ceramic member, 320 is a zirconia ceramic member, and the zirconia ceramic member 320 is embedded with two transparent ceramics. Component 310. Among them, the transparent ceramic component can be used as a window for detecting human biological signals by photoplethysmography. Similarly, in the rear case of the watch, the position, shape, size, function, etc. of the transparent ceramic member are not limited to this.
本发明实施方式中，为了获得较高机械强度的陶瓷结构件，通常将氧化锆陶瓷构件相对设置在外侧，而透明陶瓷构件相对设置在内侧。 In the embodiment of the present invention, in order to obtain a ceramic structural member with higher mechanical strength, the zirconia ceramic member is usually arranged on the outer side, and the transparent ceramic member is arranged on the inner side.
还应该说明的是，本发明实施方式中，透明陶瓷构件10和氧化锆陶瓷构件20的连接界面可以是肉眼可分辨的，也可能是肉眼不可分辨的，即肉眼看不出两种陶瓷构件的明显连接界面，而需要通过光学或电子显微镜观察才能分辨。 It should also be noted that in the embodiment of the present invention, the connection interface between the transparent ceramic member 10 and the zirconia ceramic member 20 may be distinguishable by the naked eye, or indistinguishable by the naked eye, that is, the two ceramic members cannot be distinguished by the naked eye. Obviously connect the interface, but need to observe through optical or electron microscope to distinguish.
本发明实施例上述提供的陶瓷结构件，为透明陶瓷和氧化锆陶瓷通过无缝或微缝（缝隙小于或等于0.04mm）连接形成的一体化结构件，两不同材质陶瓷构件之间结合性好，外观效果佳，连接处可有效防水、防尘，且其兼具透明陶瓷和氧化锆陶瓷两者的性能优势，可同时满足现有终端产品结构件对光学性能、抗跌落性能等各方面性能要求，可应用于终端壳体等终端结构件，具体可以是手机前盖、后盖、手表表圈、后壳等终端结构件。 The ceramic structure provided in the embodiment of the present invention is an integrated structure formed by connecting transparent ceramics and zirconia ceramics through seamless or micro-slits (the gap is less than or equal to 0.04mm), and the bonding between the two ceramic components of different materials is good. , The appearance effect is good, the joint can be effectively waterproof and dustproof, and it has the performance advantages of both transparent ceramics and zirconia ceramics, which can simultaneously meet the optical performance, drop resistance and other performances of existing terminal product structures Requirements, can be applied to terminal structures such as terminal housings, specifically terminal structures such as mobile phone front covers, back covers, watch bezels, and rear shells.
本发明实施例提供的终端，其外壳兼具透明陶瓷和氧化锆陶瓷两者的性能优势，在满足光学性能要求下，可同时具有优异的整机抗跌落性能，且通过采用彩色氧化锆陶瓷，可以获得独特的CMF效果，提升用户体验。 The terminal provided by the embodiments of the present invention has a shell with the performance advantages of both transparent ceramics and zirconia ceramics. Under meeting the requirements of optical performance, it can also have excellent drop resistance of the whole machine, and by using colored zirconia ceramics, A unique CMF effect can be obtained to enhance user experience.
本发明一实施方式中，陶瓷结构件的制备方法包括：在透明陶瓷素坯或构件与氧化锆陶瓷素坯或构件预连接的连接面之间设置无机过渡层材料，使无机过渡层材料与透明陶瓷素坯或构件结合，以及与氧化锆陶瓷素坯或构件结合，然后共烧结，得到陶瓷:结构件；陶瓷;结构件包括连接为一体的透明陶瓷;构件和氧化锆陶瓷;构件，透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，透明陶瓷构件与氧化锆陶瓷构件通过所述无机过渡层连接为一体；透明陶瓷构件和氧化锆陶瓷构件的任意位置连接处无缝隙。 In one embodiment of the present invention, the preparation method of the ceramic structure includes: arranging an inorganic transition layer material between the transparent ceramic blank or component and the pre-connected surface of the zirconia ceramic blank or component, so that the inorganic transition layer material is transparent Ceramic blanks or components are combined, and combined with zirconia ceramic blanks or components, and then co-sintered to obtain ceramics: structural parts; ceramics; structural parts including transparent ceramics connected as a whole; components and zirconia ceramics; components, transparent ceramics An inorganic transition layer is provided between the connecting surfaces of the component and the zirconia ceramic component. The transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the zirconia ceramic component are connected at any position There is no gap.
该实施方式中，无机过渡层材料的设置方法包括但不限于涂覆法、模内注射法、流延镶嵌法、模内千压法、以及特殊模具结构设计法等。其中，涂覆法具体可包括喷涂法、浸涂法、刮涂法、刷涂法等。 In this embodiment, the method for setting the inorganic transition layer material includes, but is not limited to, a coating method, an in-mold injection method, a cast inlay method, an in-mold thousand-press method, and a special mold structure design method. Among them, the coating method may specifically include spray coating, dip coating, blade coating, brush coating, and the like.
本发明实施方式中，在共烧结制备陶瓷结构件的过程中，无机过渡层材料的烧结收缩量介于透明陶瓷素坯或构件的烧结收缩量与氧化锆陶瓷素坯或构件的烧结收缩量之间。 In the embodiment of the present invention, in the process of co-sintering the ceramic structure, the sintering shrinkage of the inorganic transition layer material is between the sintering shrinkage of the transparent ceramic blank or component and the sintering shrinkage of the zirconia ceramic blank or component. between.
具体地，本发明一实施方式中，采用涂覆法设置无机过渡层的方式为：将透明陶瓷素坯或构件置于陶瓷结构件成型模具中的预定位置，将无机过渡层材料加入适合的溶剂配制成浆料，将浆料涂覆在透明陶瓷素坯或构件的预与氧化锆陶瓷构件连接的连接面上，再将氧化锆陶瓷素坯或构件设置在无机过渡层材料上，然后共烧结，得到透明陶瓷构件与氧化锆陶瓷构件连接为一体的陶瓷:结构件，该实施方式中获得的陶瓷;结构件，透明陶瓷;构件和氧化锆陶瓷;构件两者的连接面之间通过无机过渡层形成无缝隙连接。本发明其他实施方式中，也可以是先将氧化锆陶瓷素坯或构件置于陶瓷结构件成型模具中的预定位置，设置无机过渡层后，再与透明陶瓷素坯或构件结合。 Specifically, in one embodiment of the present invention, the method of applying the coating method to set the inorganic transition layer is: placing the transparent ceramic blank or component at a predetermined position in the ceramic structure forming mold, and adding the inorganic transition layer material to a suitable solvent Prepare a slurry, apply the slurry on the connecting surface of the transparent ceramic blank or component that is connected to the zirconia ceramic component, and then set the zirconia ceramic blank or component on the inorganic transition layer material, and then co-sinter it , To obtain a ceramic in which the transparent ceramic component and the zirconia ceramic component are connected as a whole: the structural component, the ceramic obtained in this embodiment; the structural component, the transparent ceramic; the component and the zirconia ceramic; the connection surface between the components is through an inorganic transition The layers form a seamless connection. In other embodiments of the present invention, the zirconia ceramic blank or component may be first placed in a predetermined position in the ceramic structure forming mold, and the inorganic transition layer is set, and then combined with the transparent ceramic blank or component.
其中，陶瓷结构件成型模具可根据预制备的陶瓷结构件的尺寸、外形轮廓等要求进行制作。 Among them, the ceramic structure forming mold can be made according to the size and contour of the pre-prepared ceramic structure.
本发明另一实施方式中，将透明陶瓷素坯或构件和氧化锆陶瓷素坯或构件分别设置于陶瓷结构件成型模具中的预定位置，两者的连接面之间预留有无机过渡层位置，然后采用模内注射法将无机过渡层材料的浆料注射到无机过渡层位置，无机过渡层材料分别与两陶瓷素坯或构件结合。当然在其他实施方式中，也可以采用流延镶嵌法、模内千压法等在无机过渡层位置设置无机过渡层材料。 In another embodiment of the present invention, the transparent ceramic blank or component and the zirconia ceramic blank or component are respectively arranged at predetermined positions in the ceramic structure forming mold, and an inorganic transition layer position is reserved between the connecting surfaces of the two , And then use the in-mold injection method to inject the slurry of the inorganic transition layer material to the position of the inorganic transition layer, and the inorganic transition layer material is combined with the two ceramic blanks or components respectively. Of course, in other embodiments, it is also possible to use the cast-inlay method, the in-mold thousand-press method, etc., to arrange the inorganic transition layer material at the position of the inorganic transition layer.
其中，共烧结的温度可以根据具体要求而定，共烧结可以是在真空或保护气氛下进行，保护气氛可以是氩气、氮气等。当透明陶瓷构件的成分为非氧化物陶瓷时，共烧气氛采用真空或氩气、氮气等非氧化性气氛。 The temperature of the co-sintering can be determined according to specific requirements. The co-sintering can be carried out in a vacuum or a protective atmosphere, and the protective atmosphere can be argon, nitrogen, or the like. When the composition of the transparent ceramic component is non-oxide ceramic, the co-firing atmosphere uses vacuum or a non-oxidizing atmosphere such as argon and nitrogen.
本发明另一实施方式中，陶瓷结构件的制备方法包括：将透明陶瓷素坯或构件与氧化锆陶瓷素坯设于模具中，并使两者预连接的连接面之间形成一预留间隙，然后共烧结，得到陶瓷结构件；或者将透明陶瓷素坯与氧化锆陶瓷素坯或构件设于模具中，并使两者预连接的连接面之间形成一预留间隙，然后共烧结，得到陶瓷结构件；所述预留间隙的宽度小于或等于在共烧结过程中，位于外侧的素坯或构件与位于内侧的素链或构件在垂直于连接面方向上的收缩量的差值；陶瓷;结构件包括连接为一体的透明陶瓷;构件和氧化锆陶瓷构件，透明陶瓷构件与氧化锆陶瓷构件两者的连接面直接接触，透明陶瓷构件和氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙当透明陶瓷构件原料和氧化锆陶瓷构件原料两者在烧结过程中收缩量差别较大时，很容易导致收缩开裂，通过预留间隙可以避免共烧结产生的开裂。 In another embodiment of the present invention, the preparation method of the ceramic structure includes: placing the transparent ceramic blank or component and the zirconia ceramic blank in a mold, and forming a reserved gap between the two pre-connected connecting surfaces , And then co-sintered to obtain ceramic structural parts; or set the transparent ceramic blank and the zirconia ceramic blank or component in the mold, and form a reserved gap between the pre-connected surfaces of the two, and then co-sinter, Obtain a ceramic structural part; the width of the reserved gap is less than or equal to the difference between the shrinkage of the blank or component located on the outer side and the strand or component located on the inner side in the direction perpendicular to the connecting surface during the co-sintering process; Ceramics; structural parts include transparent ceramics connected as a whole; components and zirconia ceramic components, the transparent ceramic component and the zirconia ceramic component are in direct contact with the connecting surface, and there is no gap at any position of the transparent ceramic component and the zirconia ceramic component. , Or there are gaps with a width less than or equal to 0.04mm in some of the joints, and there is no gap in the joints at other positions. When the shrinkage of the transparent ceramic component raw material and the zirconia ceramic component raw material is large in the sintering process, it is easy to cause shrinkage Cracking can be avoided by preserving the gap.
其中，预留间隙的宽度可根据透明陶瓷素坯或构件和氧化锆陶瓷素坯或构件，在共烧结过程中的具体收缩量进行设计。预留间隙可弥补两个陶瓷件产生的不同烧结收缩量差异，使两个陶瓷件最终实现无缝连接。 Among them, the width of the reserved gap can be designed according to the specific shrinkage of the transparent ceramic blank or component and the zirconia ceramic blank or component during the co-sintering process. The reserved gap can make up for the difference of the different sintering shrinkage produced by the two ceramic parts, so that the two ceramic parts can finally be seamlessly connected.
本发明实施方式中，预留间隙的设置方法包括但不限于消失模法（间隙处填充后续工艺可消除的模具材料）、CNC（ComputerizedNumericalControlMachine,计算机数字控制机床）预先加工法、以及特殊模具结构设计法等方式实现。 In the embodiment of the present invention, the method for setting the reserved gap includes, but is not limited to, the lost foam method (the gap is filled with mold materials that can be eliminated by the subsequent process), CNC (Computerized Numerical Control Machine) pre-processing method, and special mold structure design By means of law.
本发明另一实施方式中，陶瓷结构件的制备方法包括：将透明陶瓷素坯或构件与氧化锆陶瓷素坯或构件设于模具中，并使两者预连接的连接面贴合，然后共烧结，得到陶瓷;结构件；陶瓷;结构件包括连接为一体的透明陶瓷;构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。 In another embodiment of the present invention, the preparation method of the ceramic structure includes: setting the transparent ceramic blank or component and the zirconia ceramic blank or component in a mold, and bonding the pre-connected connecting surfaces of the two together, and then Sintering to obtain ceramics; structural parts; ceramics; structural parts including transparent ceramics connected as a whole; a component and a zirconia ceramic component, the transparent ceramic component and the zirconia ceramic component are in direct contact with the connecting surface, the transparent There is no gap in the connection between the ceramic component and the zirconia ceramic component at any position, or there is a gap with a width less than or equal to 0.04 mm at the connection at some positions, and there is no gap at the connection at other positions.
本发明实施方式中，透明陶瓷素坯和氧化锆陶瓷素坯可以是采用模内注射法、流延镶嵌法、模内千压法、以及特殊模具结构设计法等方式设置。 In the embodiment of the present invention, the transparent ceramic green body and the zirconia ceramic green body can be set by in-mold injection method, casting inlay method, in-mold thousand-pressure method, and special mold structure design method.
本发明一具体实施方式中，通过透明陶瓷构件与氧化锆陶瓷素坯结合，具体工艺过程可以是：先将透明陶瓷构件（即烧结后的结构件）放入模具，然后将氧化锆粉末加到模具中，压力作用下压合，即可将两者基本结合在一起，然后共烧结，得到一体结构的陶瓷结构件。 In a specific embodiment of the present invention, the transparent ceramic component is combined with the zirconia ceramic green body. The specific process may be: first put the transparent ceramic component (ie the sintered structural part) into the mold, and then add the zirconia powder to the mold. In the mold, the two can be basically combined together by pressing together under pressure, and then co-sintered to obtain an integrated ceramic structure.
本发明一具体实施方式中，通过透明陶瓷构件与氧化锆陶瓷素坯结合，具体工艺过程可以是：先将透明陶瓷构件（即烧结后的结构件）放入模具，再采用模内注射工艺，向模具内注入氧化锆陶瓷浆料，经脱脂、排胶后，氧化锆陶瓷素坯结合到透明陶瓷构件上，然后共烧结，得到一体结构的陶瓷结构件。 In a specific embodiment of the present invention, the transparent ceramic component is combined with the zirconia ceramic green body. The specific process can be: first put the transparent ceramic component (ie the sintered structural part) into the mold, and then use the in-mold injection process, The zirconia ceramic slurry is injected into the mold, and after degreasing and debinding, the zirconia ceramic green body is bonded to the transparent ceramic component, and then co-sintered to obtain an integrated ceramic structure.
本发明实施例上述制备方法中，透明陶瓷素坯和氧化锆陶瓷素坯是指陶瓷完全烧结前的状态，包括成型后的坯体状态、预烧结后坯体状态。透明陶瓷构件和氧化锆陶瓷构件是指完全烧结后的陶瓷;成品结构件。 In the above preparation method of the embodiment of the present invention, the transparent ceramic green body and the zirconia ceramic green body refer to the state before the ceramic is completely sintered, including the state of the green body after molding and the state of the green body after pre-sintering. Transparent ceramic components and zirconia ceramic components refer to fully sintered ceramics; finished structural parts.
本发明实施例上述制备方法中，共烧结获得的陶瓷结构件可经CNC、抛光、镀膜、表面处理等终端产品陶瓷结构件的常用工艺进行处理，得到成品终端产品陶瓷结构件。 In the above-mentioned preparation method of the embodiment of the present invention, the ceramic structure obtained by co-sintering can be processed by common processes of the end product ceramic structure such as CNC, polishing, coating, surface treatment, etc., to obtain the finished end product ceramic structure.

Claims (25)

  1. 一种陶瓷结构件，其特征在于，包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，或者所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，所述透明陶瓷构件与所述氧化锆陶瓷构件通过所述无机过渡层连接为一体；所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。A ceramic structure is characterized in that it comprises a transparent ceramic component and a zirconia ceramic component that are connected as a whole, the connection surface of the transparent ceramic component and the zirconia ceramic component is in direct contact, or the transparent ceramic component An inorganic transition layer is provided between the connecting surfaces with the zirconia ceramic component, and the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the oxide There is no gap at any position of the zirconium ceramic component, or there is a gap with a width less than or equal to 0.04mm at some positions, and there is no gap at the other positions.
  2. 如权利要求1所述的陶瓷结构件，其特征在于，所述透明陶瓷构件和所述氧化锆陶瓷构件的部分位置连接处具有宽度小于或等于0.03mm的缝隙，其余位置连接处无缝隙。3. The ceramic structure of claim 1, wherein a part of the connection between the transparent ceramic member and the zirconia ceramic member has a gap with a width less than or equal to 0.03 mm, and there is no gap at the connection at the remaining positions.
  3. 如权利要求1所述的陶瓷结构件，其特征在于，所述无机过渡层的材料包括透明陶瓷粉末、氧化锆陶瓷粉末、金属钎焊料、氧化硼、氮化硅、氧化钛中的一种或多种。The ceramic structure according to claim 1, wherein the material of the inorganic transition layer includes one of transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide Or multiple.
  4. 如权利要求1或3所述的陶瓷结构件，其特征在于，所述无机过渡层的材料包括构成所述透明陶瓷构件的陶瓷原料粉末和构成所述氧化锆陶瓷构件的陶瓷原料粉末。The ceramic structure according to claim 1 or 3, wherein the material of the inorganic transition layer includes ceramic raw material powder constituting the transparent ceramic member and ceramic raw material powder constituting the zirconia ceramic member.
  5. 如权利要求4所述的陶瓷结构件，其特征在于，所述无机过渡层中，自所述透明陶瓷构件一侧向所述氧化锆陶瓷构件一侧，所述构成透明陶瓷构件的陶瓷原料粉末的含量逐渐减小，所述构成氧化锆陶瓷构件的陶瓷原料粉末的含量逐渐增大。The ceramic structure according to claim 4, wherein in the inorganic transition layer, from the side of the transparent ceramic member to the side of the zirconia ceramic member, the ceramic raw material powder constituting the transparent ceramic member The content of the zirconia ceramic component gradually decreases, and the content of the ceramic raw material powder constituting the zirconia ceramic member gradually increases.
  6. 如权利要求1-4任一项所述的陶瓷结构件，其特征在于，所述陶瓷结构件为共烧结体，在共烧结制备所述陶瓷结构件的过程中，所述无机过渡层原料的烧结收缩量介于所述透明陶瓷构件原料的烧结收缩量和所述氧化锆陶瓷构件原料的烧结收缩量之间。The ceramic structure according to any one of claims 1 to 4, wherein the ceramic structure is a co-sintered body, and in the process of preparing the ceramic structure by co-sintering, the raw material of the inorganic transition layer The sintering shrinkage is between the sintering shrinkage of the transparent ceramic component raw material and the sintering shrinkage of the zirconia ceramic component raw material.
  7. 如权利要求1所述的陶瓷结构件，其特征在于，所述无机过渡层为单层或多层结构。3. The ceramic structure of claim 1, wherein the inorganic transition layer is a single-layer or multi-layer structure.
  8. 如权利要求1所述的陶瓷结构件，其特征在于，所述无机过渡层的厚度为1nm-500μm。The ceramic structure of claim 1, wherein the thickness of the inorganic transition layer is 1 nm-500 μm.
  9. 如权利要求1所述的陶瓷结构件，其特征在于，所述透明陶瓷构件和所述氧化锆陶瓷构件两者的连接面为可相互配合的非平面结构。3. The ceramic structure of claim 1, wherein the connecting surfaces of the transparent ceramic member and the zirconia ceramic member are non-planar structures that can be matched with each other.
  10. 如权利要求1或9所述的陶瓷结构件，其特征在于，所述透明陶瓷构件和/或所述氧化锆陶瓷构件的连接面为粗糙面，粗糙度为10nm-100μm。The ceramic structure according to claim 1 or 9, characterized in that the connecting surface of the transparent ceramic component and/or the zirconia ceramic component is a rough surface with a roughness of 10 nm-100 μm.
  11. 如权利要求1所述的陶瓷结构件，其特征在于，所述陶瓷结构件为终端壳体。5. The ceramic structure of claim 1, wherein the ceramic structure is a terminal housing.
  12. 一种陶瓷结构件的制备方法，其特征在于，包括：A method for preparing ceramic structural parts, characterized in that it comprises:
    在透明陶瓷素坯或构件与氧化锆陶瓷素坯或构件预连接的连接面之间设置无机过渡层材料，使所述无机过渡层材料与所述透明陶瓷素坯或构件结合，以及与所述氧化锆陶瓷素坯或构件结合，然后共烧结，得到陶瓷结构件；An inorganic transition layer material is arranged between the transparent ceramic blank or component and the connecting surface of the zirconia ceramic blank or component, so that the inorganic transition layer material is combined with the transparent ceramic blank or component, and with the Zirconia ceramic blanks or components are combined and then co-sintered to obtain ceramic structural parts;
    所述陶瓷结构件包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，所述透明陶瓷构件与所述氧化锆陶瓷构件通过所述无机过渡层连接为一体；所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙。The ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, an inorganic transition layer is arranged between the connection surfaces of the transparent ceramic component and the zirconia ceramic component, and the transparent ceramic component is connected to the zirconia ceramic component. The zirconia ceramic component is connected as a whole through the inorganic transition layer; there is no gap in the connection between the transparent ceramic component and the zirconia ceramic component at any position.
  13. 如权利要求12所述的陶瓷结构件的制备方法，其特征在于，所述无机过渡层材料包括透明陶瓷粉末、氧化锆陶瓷粉末、金属钎焊料、氧化硼、氮化硅、氧化钛中的一种或多种。The method for preparing a ceramic structure according to claim 12, wherein the inorganic transition layer material includes transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide. One or more.
  14. 一种陶瓷结构件的制备方法，其特征在于，包括：A method for preparing ceramic structural parts, characterized in that it comprises:
    将透明陶瓷素坯或构件与氧化锆陶瓷素坯设于模具中，并使两者预连接的连接面之间形成一预留间隙，然后共烧结，得到陶瓷结构件；Set the transparent ceramic blank or component and the zirconia ceramic blank in the mold, and form a reserved gap between the pre-connected connecting surfaces of the two, and then co-sinter to obtain the ceramic structure;
    或者将透明陶瓷素坯与氧化锆陶瓷素坯或构件设于模具中，并使两者预连接的连接面之间形成一预留间隙，然后共烧结，得到陶瓷结构件；Or set the transparent ceramic blank and the zirconia ceramic blank or component in the mold, and form a reserved gap between the pre-connected connecting surfaces of the two, and then co-sinter to obtain the ceramic structure;
    所述预留间隙的宽度小于或等于在所述共烧结过程中，位于外侧的素坯或构件与位于内侧的素坯或构件在垂直于所述连接面方向上的收缩量的差值；The width of the reserved gap is less than or equal to the difference between the shrinkage of the blank or member located on the outer side and the blank or member located on the inner side in the direction perpendicular to the connecting surface during the co-sintering process;
    所述陶瓷结构件包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。The ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, the transparent ceramic component is in direct contact with the connecting surface of the zirconia ceramic component, the transparent ceramic component and the zirconia ceramic There is no gap in the connection at any position of the component, or there is a gap with a width of less than or equal to 0.04mm in the connection at some positions, and there is no gap in the connection at other positions.
  15. 一种陶瓷结构件的制备方法，其特征在于，包括：A method for preparing ceramic structural parts, characterized in that it comprises:
    将透明陶瓷素坯或构件与氧化锆陶瓷素坯或构件设于模具中，并使两者预连接的连接面贴合，然后共烧结，得到陶瓷结构件；Set the transparent ceramic blank or component and the zirconia ceramic blank or component in a mold, and make the pre-connected connecting surfaces of the two fit together, and then co-sinter to obtain a ceramic structure;
    所述陶瓷结构件包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。The ceramic structure includes a transparent ceramic component and a zirconia ceramic component that are connected as a whole, the transparent ceramic component is in direct contact with the connecting surface of the zirconia ceramic component, the transparent ceramic component and the zirconia ceramic There is no gap in the connection at any position of the component, or there is a gap with a width of less than or equal to 0.04mm in the connection at some positions, and there is no gap in the connection at other positions.
  16. 一种终端，所述终端包括外壳，其特征在于，所述外壳包括组装在终端前侧的显示屏和组装在终端后侧的后盖，所述显示屏包括显示屏盖板，所述显示屏盖板和/或所述后盖包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，或者所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，所述透明陶瓷构件与所述氧化锆陶瓷构件通过所述无机过渡层连接为一体；所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。A terminal comprising a housing, wherein the housing includes a display screen assembled on the front side of the terminal and a back cover assembled on the rear side of the terminal, the display screen includes a display screen cover, the display screen The cover plate and/or the back cover includes a transparent ceramic member and a zirconia ceramic member that are connected as a whole, the transparent ceramic member and the zirconia ceramic member are in direct contact with the connection surface, or the transparent ceramic member and An inorganic transition layer is provided between the connecting surfaces of the two zirconia ceramic components, and the transparent ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the zirconia There is no gap in the connection at any position of the ceramic component, or there is a gap with a width of less than or equal to 0.04mm at some of the connections, and there is no gap in the connection at other positions.
  17. 如权利要求16所述的终端，其特征在于，所述外壳还包括位于所述显示屏和所述后盖之间的中框，所述中框包括连接为一体的透明陶瓷构件和氧化锆陶瓷构件，所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面直接接触，或者所述透明陶瓷构件与所述氧化锆陶瓷构件两者的连接面之间设置无机过渡层，所述透明陶瓷构件与所述氧化锆陶瓷构件通过所述无机过渡层连接为一体；所述透明陶瓷构件和所述氧化锆陶瓷构件的任意位置连接处无缝隙，或者部分位置连接处具有宽度小于或等于0.04mm的缝隙，其余位置连接处无缝隙。The terminal according to claim 16, wherein the housing further comprises a middle frame located between the display screen and the back cover, and the middle frame comprises a transparent ceramic member and a zirconia ceramic connected as a whole The connecting surface of the transparent ceramic component and the zirconia ceramic component is in direct contact, or an inorganic transition layer is arranged between the connecting surface of the transparent ceramic component and the zirconia ceramic component, the transparent The ceramic component and the zirconia ceramic component are connected as a whole through the inorganic transition layer; the transparent ceramic component and the zirconia ceramic component are seamlessly connected at any position, or part of the connection has a width less than or equal to 0.04 mm gap, there is no gap at the other positions.
  18. 如权利要求16或17所述的终端，其特征在于，所述透明陶瓷构件和所述氧化锆陶瓷构件的部分位置连接处具有宽度小于或等于0.03mm的缝隙，其余位置连接处无缝隙。The terminal according to claim 16 or 17, wherein a part of the connection between the transparent ceramic member and the zirconia ceramic member has a gap with a width less than or equal to 0.03 mm, and there is no gap at the connection at the remaining positions.
  19. 如权利要求16或17所述的终端，其特征在于，所述无机过渡层的材料包括透明陶瓷粉末、氧化锆陶瓷粉末、金属钎焊料、氧化硼、氮化硅、氧化钛中的一种或多种。The terminal according to claim 16 or 17, wherein the material of the inorganic transition layer includes one of transparent ceramic powder, zirconia ceramic powder, metal brazing material, boron oxide, silicon nitride, and titanium oxide Or multiple.
  20. 如权利要求16或17所述的终端，其特征在于，所述无机过渡层的材料包括构成所述透明陶瓷构件的陶瓷原料粉末和构成所述氧化锆陶瓷构件的陶瓷原料粉末。The terminal according to claim 16 or 17, wherein the material of the inorganic transition layer includes ceramic raw material powder constituting the transparent ceramic member and ceramic raw material powder constituting the zirconia ceramic member.
  21. 如权利要求20所述的终端，其特征在于，所述无机过渡层中，自所述透明陶瓷构件一侧向所述氧化锆陶瓷构件一侧，所述构成透明陶瓷构件的陶瓷原料粉末的含量逐渐减小，所述构成氧化锆陶瓷构件的陶瓷原料粉末的含量逐渐增大。The terminal according to claim 20, wherein, in the inorganic transition layer, from the side of the transparent ceramic member to the side of the zirconia ceramic member, the content of the ceramic raw material powder constituting the transparent ceramic member Gradually decreasing, the content of the ceramic raw material powder constituting the zirconia ceramic member gradually increases.
  22. 如权利要求16或17所述的终端，其特征在于，所述无机过渡层为单层或多层结构。The terminal according to claim 16 or 17, wherein the inorganic transition layer has a single-layer or multi-layer structure.
  23. 如权利要求16或17所述的终端，其特征在于，所述无机过渡层的厚度为1nm-500μm。The terminal according to claim 16 or 17, wherein the thickness of the inorganic transition layer is 1 nm-500 μm.
  24. 如权利要求16或17所述的终端，其特征在于，所述透明陶瓷构件和所述氧化锆陶瓷构件两者的连接面为可相互配合的非平面结构。The terminal according to claim 16 or 17, wherein the connecting surfaces of the transparent ceramic member and the zirconia ceramic member are non-planar structures that can be matched with each other.
  25. 如权利要求16或17所述的终端，其特征在于，所述透明陶瓷构件和/或所述氧化锆陶瓷构件的连接面为粗糙面，粗糙度为10nm-100μm。The terminal according to claim 16 or 17, wherein the connecting surface of the transparent ceramic member and/or the zirconia ceramic member is a rough surface with a roughness of 10 nm-100 μm.
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