CN110937826B

CN110937826B - Method for electrically fusing glass, glass composite and use thereof

Info

Publication number: CN110937826B
Application number: CN201811105503.XA
Authority: CN
Inventors: 马兰; 陈梁; 袁雄; 袁涛
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2018-09-21
Filing date: 2018-09-21
Publication date: 2022-01-07
Anticipated expiration: 2038-09-21
Also published as: CN110937826A

Abstract

The invention provides a method for electrically fusing glass, a glass composite, a display device and a terminal device, the method for electrically fusing glass comprises the following steps: forming a first frit layer on at least a portion of a surface of a first glass piece; forming a second frit layer on at least a portion of a surface of the second glass piece; under the condition of a preset temperature, the surface of the first welding layer, which is far away from the first glass piece, is contacted with the surface of the second welding layer, which is far away from the second glass piece, and the first welding layer and the second welding layer are electrified respectively, so that the first welding layer and the second welding layer are fused; and solidifying the first fused layer and the second fused layer which are melted to form the connecting layer, wherein the first fused layer and/or the second fused layer contain glass powder and a conductive medium, the melting temperature of the glass powder is lower than the softening temperature of the first glass piece and the second glass piece, and the preset temperature is lower than the melting temperature of the glass powder. The method has the advantages of simple operation, low requirement on equipment and low energy consumption.

Description

Method for electrically fusing glass, glass composite and use thereof

Technical Field

The present invention relates to the technical field of materials and terminal equipment, and particularly relates to a method for electrically fusing glass, a glass composite, a display device, terminal equipment and applications thereof, and more particularly to a method for electrically fusing glass, a glass composite, a display device and terminal equipment.

Background

With the increasing application of glass pieces in terminal equipment and electronic equipment, the requirements on the shapes, structures and the like of the glass pieces are more and more strict, and in many cases, the glass pieces with complex shapes and structures can meet the use requirements, but because the glass is higher in brittleness, a new challenge is provided for the processing method of the glass. In the related art, a glass piece with a complex shape and structure is usually prepared by adopting a welding mode, but the glass needs to be melted in the welding process, the heating temperature is high, and the welding can not be controlled to be melted only at the joint surface of two layers of glass, so that the deformation of the glass can be caused. Therefore, how to weld glass without affecting the performance of the glass is an urgent problem to be solved.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Accordingly, an object of the present invention is to provide a method for electrically fusing glass, which has a low heating temperature, does not affect the performance of a glass member, is easy to handle, or has a thin connecting layer, a glass composite obtained by the above-described method for electrically fusing glass, a display device including the above glass composite, and a terminal device including the above display device.

In one aspect of the invention, a method of electrically melting glass is provided. According to an embodiment of the invention, the method comprises: forming a first frit layer on at least a portion of a surface of a first glass piece; forming a second frit layer on at least a portion of a surface of the second glass piece; under the condition of a preset temperature, the surface of the first welding layer far away from the first glass piece is contacted with the surface of the second welding layer far away from the second glass piece, and the first welding layer and the second welding layer are electrified respectively, so that the first welding layer and the second welding layer are fused; solidifying the melted first and second fusion layers to form a connecting layer; the first fusion-bonding layer and the second fusion-bonding layer contain glass powder and a conductive medium, the melting temperature of the glass powder is lower than the softening temperature of the first glass piece and the second glass piece, and the preset temperature is lower than the melting temperature of the glass powder. The inventor finds that the method only needs to form a welding layer on the surface of a glass piece needing to be combined, can be suitable for welding of the glass piece with a complex shape and a complex structure and the glass piece with a small volume and a small surface area, is simple and convenient to operate, has low requirements on equipment, and can improve the conductivity by containing a conductive medium in the first welding layer and the second welding layer, so that the heating efficiency after electrification is improved, the energy consumption is reduced, the first glass piece and the second glass piece cannot deform in the welding process to influence the service performance and the appearance, and meanwhile, the bonding force of the welding part is strong.

In another aspect of the invention, the invention provides a glass composite. According to an embodiment of the present invention, the glass composite comprises: a first glass member; a second glass piece; wherein the first and second glass pieces are fused together by the method described above. From this, this glass complex's luminousness is higher, and the outward appearance is level and smooth, pleasing to the eye good looking, and intensity preferred, performance preferred, and can realize more meticulous, complicated shape and structure, can satisfy consumer's consumption experience.

In another aspect of the invention, the invention provides a glass composite. According to an embodiment of the present invention, the glass composite includes a first glass piece; a second glass piece; and the connecting layer is positioned between the first glass piece and the second glass piece and is used for connecting the first glass piece and the second glass piece, and the connecting layer contains glass powder oxide and oxide of a conductive medium. First glass spare and second glass spare combine firmly in this glass complex body, and the luminousness is higher, and the outward appearance is levelly and smoothly smooth, pleasing to the eye, and intensity preferred, performance preferred, and connect through the connecting layer and can realize more meticulous, complicated shape and structure.

In yet another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display device includes the glass composite described above. Therefore, the display device is flat and smooth in appearance, attractive and attractive, high in light transmittance, good in strength and good in display effect.

In yet another aspect thereof, the present invention provides a terminal device housing. According to an embodiment of the invention, at least a portion of the terminal housing is made from the glass composite body described throughout. Therefore, the preparation method of the shell is simple and easy to operate, the problem that glass is not easy to process into a complex shape due to brittleness of the glass is solved, the shell can be effectively used for various electronic products (such as mobile phones, tablet computers and the like), the problem of signal shielding of a metal shell is solved, and meanwhile, the electronic products can be endowed with more attractive and diversified appearances.

In yet another aspect thereof, the present invention provides a terminal device. According to an embodiment of the present invention, the terminal device includes the aforementioned display device or the aforementioned terminal device case. The inventor finds that the terminal equipment is attractive and attractive in appearance, good in strength, capable of achieving the appearance of all glass and good in service performance.

Drawings

FIG. 1 is a schematic flow chart of a method for electrically melting glass according to an embodiment of the present invention.

Fig. 2 is a schematic view of a first glass piece having a first frit layer formed thereon according to an embodiment of the present invention.

Fig. 3 is a schematic view of a second glass piece having a second frit layer formed thereon according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a configuration for energizing a first fused layer and a second fused layer in accordance with an embodiment of the present invention.

Fig. 5 is a schematic view of a structure for energizing a first fusion layer and a second fusion layer according to another embodiment of the present invention.

Fig. 6 is a schematic view of a configuration for energizing a first fusion layer and a second fusion layer in accordance with another embodiment of the present invention.

Fig. 7 is a schematic view of a configuration for energizing a first fused layer and a second fused layer in accordance with another embodiment of the present invention.

FIG. 8 is a schematic structural view of a glass composite according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a terminal device housing of some embodiments of the present invention.

FIG. 10 is a schematic view of a three-point bend test of one embodiment of the present invention.

FIG. 11 is a schematic structural view of a glass composite according to example 12 of the present invention.

FIG. 12 is a schematic drawing of the tensile strength test of example 12 of the present invention.

Reference numerals:

10: first glass member 11: first fusion-bonded layer 20: second glass member 21: second fusion-bonded layer 31: first electrode 32: second electrode 33: third electrode 34: fourth electrode 35: fifth electrode 36: sixth electrode 1: first splint 2: second splint 4: connection layer 41: first connection layer 42: second connection layer 100: plate glass member 200: frame-shaped glass member

Detailed Description

The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

In one aspect of the invention, a method of electrically melting glass is provided. According to an embodiment of the invention, referring to fig. 1, the method comprises the steps of:

s100: a first frit layer 11 is formed on at least a part of the surface of the first glass member 10 (see fig. 2 for a schematic structural view).

S200: a second frit layer 21 is formed on at least a part of the surface of the second glass member 20 (see fig. 3 for a schematic structural view).

The specific composition and type of the first glass piece and the second glass piece according to the embodiment of the present invention are not particularly limited, and include but are not limited to aluminosilicate (e.g., corning glass, etc.), borosilicate (e.g., schottky glass, etc.), etc., and those skilled in the art can flexibly select the composition and type according to the actual application. According to the embodiment of the present invention, the specific shape and structure of the first glass member and the second glass member can be selected according to the requirement, for example, the first glass member and the second glass member can be flat glass, 2.3D glass or 3D glass, and can also be any shape and structure meeting the requirement of use.

According to the embodiment of the invention, in order to improve the bonding force between the first glass piece and the second glass piece and not influence the performance of the glass composite body obtained by welding, the glass powder and the conductive medium are contained in the first welding layer and/or the second welding layer. From this, the butt fusion layer contains glass powder can be fine with first glass spare and second glass spare firm compatible and make it combine, coefficient of thermal expansion is good with first glass spare and second glass spare matching nature, and butt fusion position intensity is higher, and contains the electric conductive property that the electrically conductive medium can improve first butt fusion layer and second butt fusion layer, makes it generate heat after the circular telegram efficiency higher, can melt under lower energy consumption, improves energy utilization and rate, reduce cost. According to some embodiments of the invention, the first frit layer comprises the glass frit and the conductive medium, the second frit layer comprises the glass frit and the conductive medium, and the glass frit in the first frit layer is the same as or different from the glass frit in the second frit layer; the conductive medium in the first fused layer may be the same as or different from the conductive medium in the second fused layer. The skilled person can flexibly select the required usage requirements as long as they are satisfied.

According to some embodiments of the invention, in order to avoid deformation of the first glass piece and the second glass piece during the fusion process, the melting temperature of the glass frit is lower than the softening temperature of the first glass piece and the second glass piece. Therefore, when the glass powder is melted, the temperature does not reach the softening temperature of the first glass piece and the second glass piece, and the first glass piece and the second glass piece cannot deform in the welding process. In other embodiments of the present invention, the temperature at which the first and second frit layers completely melt is less than the softening temperature of the first and second glass pieces. Therefore, the welding effect is better, the binding force is stronger, the first glass piece and the second glass piece cannot deform, the obtained glass complex is good in performance, and the appearance is flat, smooth and attractive.

It should be noted that, the description "melting temperature of glass frit" used herein refers to the lower limit temperature of the melting temperature range of glass frit, and if the melting temperature range of glass frit is 185-210 ℃, the melting temperature here refers to 185 ℃; "temperature at which the glass frit is completely melted" means the lowest temperature at which the glass frit reaches complete melting; the phrase "the melting temperature of the glass frit is lower than the softening temperature of the first glass member and the second glass member" means that the higher of the melting temperature of the glass frit in the first frit layer and the melting temperature of the glass frit in the second frit layer is lower than the lower of the softening temperature of the first glass member and the softening temperature of the second glass member, and other similar descriptions are the same.

According to an embodiment of the invention, the conductive medium comprises at least one of tin and indium. Therefore, the electric conduction is better, the heating efficiency of the first welding layer and the second welding layer after electrification is favorably improved,the energy consumption and the cost are reduced, in addition, in the welding process, tin and indium can be oxidized to generate transparent oxides (including but not limited to indium tin oxide), the obtained connecting layer has higher transmittance, and further, the obtained glass composite body still has higher transmittance and cannot be influenced by welding. According to an embodiment of the present invention, the glass frit may be selected from at least one of a borosilicate metallic salt, a bismuthate and a phosphate, wherein a main component of the borosilicate metallic salt includes kaolin, limestone and SiO₂The bismuth salt contains Bi as a main component₂O₃-B₂O₃-ZnO, the main component of the phosphate comprising B₂O₃-BaO-P₂O₅. Therefore, the fusion welding device has a lower melting temperature, and can realize the fusion welding between the first glass piece and the second glass piece under a lower temperature condition without influencing the performance of the first glass piece and the second glass piece.

According to an embodiment of the invention, forming the first or second fused layer comprises: mixing the glass powder, the conductive medium and a solvent to obtain conductive slurry; coating the conductive paste on at least one part of the surface of the first glass piece or the second glass piece to obtain a paste film; and drying the slurry film to obtain the first welding layer or the second welding layer. Therefore, the first welding layer and the second welding layer can be formed at any required positions simply and conveniently, the glass composite body obtained after welding can have a fine and complex shape and structure, the application function range is wider, and the application requirements of some special conditions can be met particularly. In some embodiments of the present invention, the solvent includes at least one of water and an organic solvent (e.g., ethanol, acetone, etc.). Therefore, the material source is wide, and the price is low.

According to the embodiment of the invention, in order to obtain the first welding layer and the second welding layer with better performance, when the conductive paste is prepared, the glass powder, the conductive medium and the water are mixed according to the mass ratio of 1: (5-10): (5-10) (e.g., 1 (5/6/7/8/9/10): 5/6/7/8/9/10)). Therefore, the obtained conductive paste has good film forming property, is convenient to coat, can obtain a first fusion layer or a second fusion layer with thin thickness, flat and smooth surface and uniform thickness, adopts water as a solvent, can uniformly disperse glass powder and a conductive medium, and is non-toxic, harmless, low in cost and environment-friendly.

According to an embodiment of the invention, the thickness of the first and second fusion layers is each independently 0.1-50 microns, such as 0.1 microns, 5 microns, 10 microns, 15 microns, 20 microns, 25 microns, 30 microns, 35 microns, 40 microns, 45 microns, 50 microns, etc. Within this range, the first glass piece and the second glass piece can be firmly welded together, and the thickness of the formed connecting layer is small, so that the formation of the obtained glass composite body is not adversely affected.

According to an embodiment of the present invention, after forming the first fusion layer or the second fusion layer, and before energizing the first fusion layer and the second fusion layer, respectively, further comprises: washing the first glass piece and/or the second glass piece with an acid and/or alkaline detergent; and sequentially washing and drying the first glass piece and/or the second glass piece. Therefore, oil stain impurities on the surfaces of the first glass piece, the second glass piece, the first welding layer and the second welding layer can be effectively removed by using an acid and/or alkali detergent, and the surface residual solution can be cleaned by washing, so that the first glass piece and the second glass piece with clean surfaces are obtained, the subsequent welding operation is facilitated, and the binding force is improved.

According to an embodiment of the present invention, in order to further improve the cleanliness of the surfaces of the first glass member, the second glass member, the first fusion bonded layer, and the second fusion bonded layer, after the washing, and before the washing, the method further includes: immersing the first glass piece and/or the second glass piece in ammonia water and heating. Therefore, oil stains and impurities on the surfaces of the first glass piece, the second glass piece, the first welding layer and the second welding layer can be further removed, high-standard cleanliness is achieved, the welding step is facilitated, and the performance of the obtained glass complex is good. According to the embodiment of the invention, the concentration of the ammonia water is 5.6-18.3mol/L (such as 5.6mol/L, 6mol/L, 7mol/L, 8mol/L, 9mol/L, 10mol/L, 11mol/L, 12mol/L, 13mol/L, 14mol/L, 15mol/L, 16mol/L, 17mol/L, 18mol/L, 18.3mol/L and the like), and the heating temperature is 70-100 ℃ (such as 70 ℃, 75 ℃, 80 ℃, 85 ℃, 90 ℃, 95 ℃, 100 ℃ and the like). Therefore, the ideal cleaning effect can be achieved, and the reaction condition is mild.

S300: under the condition of a preset temperature, the surface of the first welding layer, which is far away from the first glass piece, is contacted with the surface of the second welding layer, which is far away from the second glass piece, and the first welding layer and the second welding layer are electrified respectively, so that the first welding layer and the second welding layer are melted, and the preset temperature is lower than the melting temperature of the glass powder.

According to an embodiment of the present invention, the first fusion layer and the second fusion layer each include a conductive medium therein, which generates joule heat after the first fusion layer and the second fusion layer are energized, and the joule heat can melt the first fusion layer and the second fusion layer, thereby fusing the first glass piece and the second glass piece together.

According to the embodiment of the invention, the electric conduction performance of the first welding layer and the second welding layer can be obviously improved by electrifying at the preset temperature, and the bonding strength between the first glass piece and the second glass piece can be further improved. In some embodiments of the present invention, the predetermined temperature may be 200 ℃ to 500 ℃, such as 200 ℃, 250 ℃, 300 ℃, 350 ℃, 400 ℃, 450 ℃ and 500 ℃. Therefore, the first welding layer and the second welding layer have appropriate conductive performance, the heating efficiency is high, energy consumption can be saved, and the bonding strength of the first glass piece and the second glass piece can be increased.

In some embodiments of the present invention, referring to fig. 4-6, energizing the first and second fused

layers

11 and 21, respectively, may be performed by: a first electrode 31 and a second electrode 32 which are respectively contacted with the first welding layer 11 and/or the second welding layer 21 are respectively arranged at two ends of the outer edge of the first welding layer 11 and/or the second welding layer 21; the first electrode 31 and the second electrode 32 are then connected to the positive and negative poles of a power source, respectively. In some embodiments of the present invention, referring to fig. 4, a first electrode 31 is disposed at a first end of an outer edge of the first fused layer 11 and contacts the first fused layer 11, and a second electrode 32 is disposed at a second end of an outer edge of the second fused layer 21 and contacts the second fused layer 21; the first electrode 31 and the second electrode 32 are then connected to the positive and negative poles of a power supply, respectively, with the first and second ends being oppositely disposed. In other embodiments of the present invention, referring to fig. 5, a first electrode 31 and a second electrode 32 are respectively disposed at two opposite ends of the outer edge of the second fusion layer 21, and are in contact with the second fusion layer 21; the first electrode 31 and the second electrode 32 are then connected to the positive and negative poles of a power source, respectively. It will be appreciated that only one of which is shown in fig. 5, the first and second electrodes may be provided on both end surfaces of the outer edge of the first frit layer. In other embodiments of the present invention, referring to fig. 6, the first electrode 31 and the second electrode 32 are respectively disposed at two opposite ends of the outer edges of the first fusion layer 11 and the second fusion layer 21, and the first electrode 31 and the second electrode 32 are both in contact with the first fusion layer 11 and the second fusion layer 21; the second electrode 32 is then connected to the positive and negative poles of a power supply, respectively. This makes it possible to form a circuit in which current flows through first fusion-bonded layer 11 and second fusion-bonded layer 21, and joule heat is generated to melt and bond the first fusion-bonded layer and the second fusion-bonded layer.

In other embodiments of the present invention, referring to fig. 7, energizing the first fused layer 11 and the second fused layer 21, respectively, may be performed by: a third electrode 33 and a fourth electrode 34 which are respectively contacted with the first welding layer 11 are respectively arranged at two ends of the outer edge of the first welding layer 11; a fifth electrode 35 and a sixth electrode 36 which are respectively contacted with the second welding layer 21 are respectively arranged at two ends of the outer edge of the second welding layer 21; the third electrode 33 and the fourth electrode 34 are then connected to the positive and negative poles of a power source, respectively, while the fifth electrode 35 and the sixth electrode 36 are connected to the positive and negative poles of the power source, respectively. This makes it possible to form a circuit in which current flows through first fusion-bonded layer 11 and second fusion-bonded layer 21, and joule heat is generated to melt and bond the first fusion-bonded layer and the second fusion-bonded layer.

According to an embodiment of the present invention, the first electrode, the second electrode, the third electrode, the fourth electrode, the fifth electrode, and the sixth electrode are each independently a molybdenum electrode or a graphite electrode. Therefore, the conductive adhesive has the advantages of good conductivity, easily obtained raw material sources and lower cost, and is not easy to adhere to the first welding layer and the second welding layer after melting.

According to an embodiment of the invention, after energizing the first fusion layer and the second fusion layer, respectively, the current density through the first fusion layer or the second fusion layer is independently of each other 0.5-5A/dm²For example 0.5A/dm²、1A/dm²、1.5A/dm²、2A/dm²、2.5A/dm²、3A/dm²、3.5A/dm²、4A/dm²、4.5A/dm²、5A/dm²And the like. Within the current density range, the heating efficiency and the energy utilization rate of the first welding layer and the second welding layer are higher, and the energy consumption is saved.

According to the embodiment of the present invention, in order to make the bonding between the first glass member and the second glass member stronger, the first frit layer and the second frit layer are electrified and at the same time, the first glass member and the second glass member are subjected to the pressing process. Specifically, the pressure of the pressure treatment is 0.05 to 2MPa (e.g., 0.05MPa, 0.1MPa, 0.5MPa, 1.0MPa, 1.5MPa, 2.0MPa, etc.), and the pressure time is 0.5 to 5 hours (e.g., 0.5 hour, 1 hour, 1.5 hour, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 4.5 hours, 5 hours, etc.). Therefore, the bonding strength of the first glass piece and the second glass piece can be further increased, and the uniformity of the connecting layer is favorably improved.

S400: and solidifying the melted first welding layer and the second welding layer to form the connecting layer 4 (the structural schematic diagram is shown in figure 8).

According to the embodiment of the invention, solidification can be performed at room temperature, and specifically, after the first welding layer and the second welding layer are melted by electrifying, electrifying is stopped, and then natural cooling is performed until solidification. In some embodiments of the present invention, after the first and second fusion layers are melted and before they are solidified, the first and second electrodes may be removed, thereby obtaining a glass composite body with a flat and aesthetic appearance.

The inventor finds that the method only needs to form the welding layer on the surface of the glass piece needing to be combined, can be suitable for welding of the glass piece with a complex shape and a complex structure and the glass piece with a small volume and a small surface area, is simple and convenient to operate, has low requirements on equipment, and can improve the conductivity by containing the conductive medium in the first welding layer and the second welding layer, so that the heating efficiency after electrification is improved, the energy consumption is reduced, the first glass piece and the second glass piece cannot deform in the welding process to influence the service performance and the appearance, and meanwhile, the bonding force of the welding part is strong.

In another aspect of the invention, the invention provides a glass composite. According to an embodiment of the present invention, the glass composite comprises: a first glass member; a second glass piece; wherein the first and second glass pieces are fused together by the method described above. From this, this glass complex's luminousness is higher, and the outward appearance is level and smooth, pleasing to the eye good looking, and intensity preferred, performance preferred, and can realize more meticulous, complicated shape and structure, can wide application in casing, apron and on-vehicle glass etc. of display device, electronic product, terminal equipment etc. can satisfy consumer's consumption experience. A schematic of a glass composite formed by fusing two glass sheets together is shown in fig. 8, although those skilled in the art will appreciate that the glass composite may have other shapes and is not limited to the shape shown in fig. 8.

In another aspect of the invention, the invention provides a glass composite. According to an embodiment of the present invention, the glass composite (the schematic structural diagram may refer to fig. 8) includes a first glass member, a second glass member, and a connection layer, the connection layer is located between the first glass member and the second glass member and is used for connecting the first glass member and the second glass member, and the connection layer includes a glass frit oxide and an oxide of a conductive medium. First glass spare and second glass spare combine firmly in this glass complex body, and the luminousness is higher, and the outward appearance is levelly and smoothly smooth, pleasing to the eye, and intensity preferred, performance preferred, and connect through the connecting layer and can realize more meticulous, complicated shape and structure.

According to embodiments of the present invention, the first glass piece and the second glass piece in the glass composite may be identical to the first glass piece and the second glass piece described above, and will not be described in detail herein.

According to an embodiment of the present invention, the glass frit oxide includes at least one of a borosilicate glass frit oxide, a bismuthate glass frit oxide, and a phosphate glass frit oxide, and the conductive medium includes at least one of indium and tin. Therefore, the connecting layer is high in compatibility with the first glass piece and the second glass piece, good in wettability and large in bonding force between the connecting layer and the first glass piece and between the connecting layer and the second glass piece. In addition, the connection layer contains at least one oxide of indium and tin, and the oxide can be formed in an electric fusion mode, so that the preparation method is simple and easy to implement.

It should be noted that the description "glass frit oxide" used herein refers to an oxide contained in glass frit, or an oxide capable of forming glass frit, and specifically, the above-mentioned oxidized borosilicate glass frit oxide, bismuthate glass frit oxide and phosphate glass frit oxide refer to an oxide contained in oxidized borosilicate glass frit, bismuthate glass frit and phosphate glass frit, respectively, for example, the main oxides in oxidized borosilicate glass frit include kaolin, limestone and SiO₂At least one of the bismuth salt glass powder, the main oxide in the bismuth salt glass powder comprises Bi₂O₃-B₂O₃ZnO, the main oxide in the phosphate glass powder comprising B₂O₃-BaO-P₂O₅。

According to an embodiment of the present invention, the indium and/or tin may be present in an amount of 31% to 63% by mass, for example, 30%, 35%, 40%, 45%, 50%, 55%, 60%, etc., based on the total mass of the connection layer. Therefore, the connecting layer can be conveniently formed by an electrifying melting method, the conductivity is good, the connecting layer can be quickly and effectively formed by melting, the energy consumption is reduced, and the cost is saved.

It can be understood that the glass composite may be a protective cover plate or a rear cover of a display device, or may also be a substrate in a color film substrate or an array substrate, and may be selected with reference to actual situations.

According to an embodiment of the present invention, the type of the above display device is not particularly limited, and may include, for example, but not limited to, a liquid crystal display device or an OLED display device, etc.; the display device may include structures that a conventional display device should have, such as an array substrate, a color filter substrate, and electrodes, in addition to the glass composite described above, and thus, redundant description is omitted here.

In yet another aspect thereof, the present invention provides a terminal device housing. According to an embodiment of the invention, at least a portion of the terminal housing is made from the glass composite described above. From this, this terminal equipment casing outward appearance is leveled smooth, pleasing to the eye nice and graceful, receives consumer's favor easily, and intensity preferred is resistant to be fallen, wear-resisting, and can realize more meticulous, complicated shape and structure in order to satisfy consumer's consumption experience.

According to an embodiment of the present invention, the terminal device case is constituted by the glass composite described above, and the first glass member in the glass composite is a plate glass member, and the second glass member in the glass composite is a frame-shaped glass member provided on an outer peripheral edge of the plate glass member. Therefore, the glass shell with the three-dimensional structure can be realized, various complex 2.5D (two-dimensional) structures, 3D (three-dimensional) structures, special-shaped structures and the like can be obtained as required, the preparation method of the shell is simple and easy to operate, the problem that the glass is not easy to process into complex shapes due to brittleness of the glass is solved, the shell can be effectively used for various electronic products (such as mobile phones, tablet computers and the like), the problem of signal shielding of a metal shell is solved, and meanwhile, the electronic products can be endowed with more attractive and diversified appearances.

According to an embodiment of the present invention, the inner surface and the outer surface of the position where the plate glass member and the frame glass member are joined are each independently a flat surface, a curved surface, or a combination of a flat surface and a curved surface. Specifically, after the plate glass member and the frame glass member are combined, the corresponding positions of the outer surfaces of the plate glass member and the frame glass member can be machined, and then any shape meeting the use requirements can be obtained. In some embodiments of the present invention, it is also possible to first machine the frame-shaped glass member into a predetermined shape and then electrically fuse the frame-shaped glass member and the plate glass member to obtain various terminal device housings of complicated shapes. Specifically, in some embodiments, referring to fig. 9, the connection position of the flat glass member 100 and the frame-shaped glass member 200 in the terminal device housing may be an inner right-angle structure (a in fig. 9), an inner stepped structure (b in fig. 9), an outer curved surface structure (c in fig. 9) or an inner surface and an inner surface of the frame-shaped glass member may be an outwardly convex curved surface structure (f in fig. 9), and the inner surface of the frame-shaped glass member may be a gradually inwardly inclined structure (d in fig. 9), a gradually outwardly inclined structure (e in fig. 9) or an inwardly convex curved surface structure (g in fig. 9). Therefore, various complex shapes can be realized, the assembly with internal components is convenient, or a special light and shadow effect can be realized.

The specific size of the housing is not particularly limited according to the embodiment of the present invention, and those skilled in the art can flexibly select the size as needed.

According to an embodiment of the present invention, the terminal device includes: at least one of a mobile phone, a tablet computer, a notebook computer, a VR (virtual reality) device, an AR (augmented reality) device, a wearable device, and a game console. Therefore, the application range is wide, and the consumption experience of consumers can be met.

It should be noted that, the terminal device may further include structures that the conventional terminal device should have, such as a CPU, a connection circuit, a package structure, and the like, besides the display device described above, and redundant description is not repeated here.

The following describes embodiments of the present invention in detail.

Example 1

Mixing the borosilicate glass powder, a conductive medium containing indium and tin and water according to the mass ratio of 1:5:5 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 multiplied by 24 multiplied by 1mm (the coating length is 6mm), and drying to obtain a welding layer, wherein the thickness of the first welding layer is 0.1 micron, and the thickness of the second welding layer is 30 microns. Cleaning glass sheets with welding layers formed by ethanol and acetone, immersing a first glass piece and a second glass piece into ammonia water and heating, wherein the concentration of the ammonia water is 5.6mol/L, the heating temperature is 70 ℃, then washing and drying are carried out, then, the welding layers on the two glass sheets are oppositely arranged, a first electrode and a second electrode are respectively arranged at two ends of the welding layer, the first electrode and the second electrode are respectively connected with the positive electrode and the negative electrode of a power supply, the glass sheets are heated to 500 ℃, then the power supply is switched on to electrify the welding layers, and the electrifying current density is 1A/dm²And simultaneously pressurizing the two glass sheets at the pressure of 0.4MPa for 2 hours, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see fig. 10 for a test diagram, and two parallel experiments were carried out), the load at which the glass composite broke is shown in table 1, and the breaking position of the glass composite is shown in the position indicated by the arrow a in fig. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 1

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	15.69	0.52
2	24.02	0.8

Falling ball test conditions: 32g steel balls were dropped from 50cm height and circulated 1 point (center point) with increasing height, 60cm, 70cm, 80cm, 90cm, … … until the glass broke.

The results are as follows: cracks at 100cm

Example 2

Mixing the borosilicate glass powder, a conductive medium containing indium and tin and water according to the mass ratio of 1:10:10 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 multiplied by 24 multiplied by 1mm (the coating length is 6mm), and drying to obtain a welding layer, wherein the thickness of the first welding layer is 0.1 micron, and the thickness of the second welding layer is 30 microns. Cleaning the glass sheet with the fusion-bonded layer with ethanol and acetone, immersing the first glass member and the second glass member in ammonia water, andheating, wherein the concentration of ammonia water is 18.3mol/L, the heating temperature is 100 ℃, then washing and drying are carried out, then, the fusion layers on the two glass sheets are oppositely arranged, the first electrode and the second electrode are respectively arranged at the two ends of the fusion layer, the first electrode and the second electrode are respectively connected with the positive electrode and the negative electrode of a power supply, the glass sheets are heated to 500 ℃, then the power supply is switched on to electrify the fusion layer, and the electrifying current density is 1A/dm²And simultaneously pressurizing the two glass sheets at the pressure of 0.4MPa for 2 hours, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see fig. 10 for a test diagram, and two parallel experiments were carried out), the load at which the glass composite broke is shown in table 2, and the breaking position of the glass composite is shown in the position indicated by the arrow a in fig. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 2

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	17.21	0.57
2	16.32	0.54

The results are as follows: cracks at 120cm

Example 3

Mixing the borosilicate glass powder, a conductive medium containing indium and tin and water according to the mass ratio of 1:6:8 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 multiplied by 24 multiplied by 1mm (the coating length is 6mm), and drying to obtain a welding layer, wherein the thickness of the first welding layer is 0.1 micron, and the thickness of the second welding layer is 30 microns. Cleaning a glass sheet with a fusion layer by adopting ethanol and acetone, immersing a first glass piece and a second glass piece into ammonia water and heating, wherein the concentration of the ammonia water is 10mol/L, the heating temperature is 80 ℃, then washing and drying are carried out, then, the fusion layers on the two glass pieces are oppositely arranged, a first electrode and a second electrode are respectively arranged at two ends of the fusion layer, the first electrode and the second electrode are respectively connected with the positive electrode and the negative electrode of a power supply, the glass sheet is heated to 500 ℃, then the power supply is switched on to electrify the fusion layers, and the electrifying current density is 1A/dm²And simultaneously pressurizing the two glass sheets at the pressure of 0.4MPa for 2 hours, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see fig. 10 for a test diagram, and two parallel tests were carried out), the load at which the glass composite broke is shown in table 3, and the breaking position of the glass composite is shown in the position indicated by the arrow b in fig. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 3

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	19.64	0.65
2	15.93	0.53

The results are as follows: cracks at 90cm

Example 4

Mixing bismuthate glass powder, a conductive medium containing tin and water according to the mass ratio of 1:5:5 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 x 24 x 1mm (the coating length is 6mm), and drying to obtain a welding layer, wherein the thickness of a first welding layer is 20 micrometers, and the thickness of a second welding layer is 20 micrometers. Cleaning the glass sheets with the fusion layers by using ethanol and acetone, then washing and drying, then oppositely arranging the fusion layers on the two glass sheets, respectively arranging a first electrode and a second electrode at two ends of the fusion layers, respectively connecting the first electrode and the second electrode with the positive electrode and the negative electrode of a power supply, heating the glass sheets to 500 ℃, then switching on the power supply to electrify the fusion layers, wherein the electrified current density is 0.5A/dm²Simultaneously pressurizing the two glass sheets for 2 hours at a pressure of 0.4MPa, removing the first electrode and the second electrode after the fusion layer is fused, and enabling the first electrode and the second electrode to be connectedThe fusion layer is solidified, and the obtained product is subjected to chemical strengthening to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see fig. 10 for a test diagram, and two parallel tests were carried out), the load at which the glass composite broke is shown in table 4, and the breaking position of the glass composite is shown in the position indicated by the arrow a in fig. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 4

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	16.97	0.57
2	18.76	0.63

The results are as follows: cracks at 100cm

Example 5

Mixing bismuthate glass powder, a conductive medium containing indium and water according to the mass ratio of 1:5:5 to obtain conductive slurry, and respectively coating the conductive slurry on two 12-component substratesOne end of the length of the 24 x 1mm glass sheet (coated length 6mm) was dried to give a frit layer, where the first frit layer was 20 microns thick and the second frit layer was 20 microns thick. Cleaning glass sheets with welding layers by adopting ethanol and acetone, then washing and drying, then oppositely arranging the welding layers on the two glass sheets, respectively arranging a first electrode and a second electrode at two ends of the welding layers, respectively connecting the first electrode and the second electrode with the positive electrode and the negative electrode of a power supply, heating the glass sheets to 500 ℃, then switching on the power supply to electrify the welding layers, wherein the electrified current density is 5A/dm²And simultaneously pressurizing the two glass sheets at the pressure of 0.4MPa for 2 hours, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see fig. 10 for a test diagram, and two parallel experiments were carried out), the load at which the glass composite broke is shown in table 5, and the breaking position of the glass composite is shown in the position indicated by the arrow b in fig. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 5

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	18.33	0.61
2	15.27	0.51

The results are as follows: cracks at 90cm

Example 6

Mixing phosphate glass powder, a conductive medium containing tin and water according to the mass ratio of 1:5:5 to obtain conductive slurry, respectively coating the conductive slurry on one end of two glass sheets with the length of 12 x 24 x 1mm (the coating length is 6mm) and drying to obtain a welding layer, wherein the thickness of a first welding layer is 20 micrometers, and the thickness of a second welding layer is 20 micrometers. Cleaning glass sheets with welding layers by using ethanol and acetone, then washing and drying, then oppositely arranging the welding layers on the two glass sheets, respectively arranging a first electrode and a second electrode at two ends of the welding layers, respectively connecting the first electrode and the second electrode with a positive electrode and a negative electrode of a power supply, heating the glass sheets to 200 ℃, then switching on the power supply to electrify the welding layers, wherein the electrified current density is 2A/dm²And simultaneously pressurizing the two glass sheets at the pressure of 1.5MPa for 3 hours, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see fig. 10 for a test diagram, and two parallel experiments were carried out), the load at which the glass composite broke is shown in table 6, and the breaking position of the glass composite is shown in the position indicated by the arrow b in fig. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 6

The results are as follows: cracks at 120cm

Example 7

Mixing phosphate glass powder, a conductive medium containing indium and water according to the mass ratio of 1:5:5 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 x 24 x 1mm (the coating length is 6mm) and drying to obtain a welding layer, wherein the thickness of a first welding layer is 20 micrometers, and the thickness of a second welding layer is 20 micrometers. Cleaning glass sheets with welding layers by using ethanol and acetone, then washing and drying, then oppositely arranging the welding layers on the two glass sheets, respectively arranging a first electrode and a second electrode at two ends of the welding layers, respectively connecting the first electrode and the second electrode with a positive electrode and a negative electrode of a power supply, heating the glass sheets to 400 ℃, then switching on the power supply to electrify the welding layers, wherein the electrified current density is 2A/dm²And simultaneously pressurizing the two glass sheets at the pressure of 1.5MPa for 3 hours, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see FIG. 10 for a test diagram, and two parallel tests were carried out), the load at which the glass composite broke is shown in Table 7, and the breaking position of the glass composite is shown in the position indicated by the arrow a in FIG. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 7

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	15.64	0.52
2	17.46	0.58

Example 8

Mixing the borosilicate glass powder, a conductive medium containing tin and indium and water according to the mass ratio of 1:5:5 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 multiplied by 24 multiplied by 1mm (the coating length is 6mm), and drying to obtain a welding layer, wherein the thickness of the first welding layer is 20 microns, and the thickness of the second welding layer is 20 microns. Cleaning glass sheets with welding layers by using ethanol and acetone, then washing and drying, then oppositely arranging the welding layers on the two glass sheets, respectively arranging a first electrode and a second electrode at two ends of the welding layers, respectively connecting the first electrode and the second electrode with a positive electrode and a negative electrode of a power supply, heating the glass sheets to 500 ℃, then switching on the power supply to electrify the welding layers, wherein the electrified current density is 2A/dm²And simultaneously pressurizing the two glass sheets at the pressure of 0.05MPa for 3 hours, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see fig. 10 for a test diagram, and two parallel experiments were carried out), the load at which the glass composite broke is shown in table 8, and the breaking position of the glass composite is shown in the position indicated by the arrow a in fig. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 8

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	18.61	0.62
2	16.94	0.56

The results are as follows: cracks at 100cm

Example 9

Mixing the borosilicate glass powder, a conductive medium containing indium and tin and water according to the mass ratio of 1:5:5 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 multiplied by 24 multiplied by 1mm (the coating length is 6mm), and drying to obtain a welding layer, wherein the thickness of the first welding layer is 20 microns, and the thickness of the second welding layer is 20 microns. Formed by ethanol and acetoneCleaning the glass sheets with the fusion layers, washing and drying, arranging the fusion layers on the two glass sheets oppositely, arranging a first electrode and a second electrode at two ends of the fusion layers respectively, connecting the first electrode and the second electrode with the positive electrode and the negative electrode of a power supply respectively, heating the glass sheets to 500 ℃, then switching on the power supply to electrify the fusion layers, wherein the electrified current density is 1A/dm²And simultaneously pressurizing the two glass sheets for 2 hours at the pressure of 2MPa, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see FIG. 10 for a test diagram, and two parallel tests were carried out), and the load at the time of breaking the glass composite was shown in Table 9, and the breaking position of the glass composite was shown in the position indicated by the arrow a in FIG. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 9

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	15.73	0.52
2	17.83	0.59

The results are as follows: cracks at 90cm

Example 10

Mixing the borosilicate glass powder, a conductive medium containing indium and tin and water according to the mass ratio of 1:5:5 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 multiplied by 24 multiplied by 1mm (the coating length is 6mm), and drying to obtain a welding layer, wherein the thickness of the first welding layer is 20 microns, and the thickness of the second welding layer is 20 microns. Cleaning glass sheets with welding layers by using ethanol and acetone, then washing and drying, then oppositely arranging the welding layers on the two glass sheets, respectively arranging a first electrode and a second electrode at two ends of the welding layers, respectively connecting the first electrode and the second electrode with a positive electrode and a negative electrode of a power supply, heating the glass sheets to 500 ℃, then switching on the power supply to electrify the welding layers, wherein the electrified current density is 2A/dm²And simultaneously pressurizing the two glass sheets at the pressure of 2MPa for 0.5 hour, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see fig. 10 for a test diagram, and two parallel experiments were carried out), the load at which the glass composite broke is shown in table 10, and the breaking position of the glass composite is shown in the position indicated by the arrow b in fig. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

Watch 10

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	14.22	0.47
2	16.36	0.55

The results are as follows: cracks at 120cm

Example 11

Mixing the borosilicate glass powder, a conductive medium containing indium and tin and water according to the mass ratio of 1:5:5 to obtain conductive paste, respectively coating the conductive paste on one end of two glass sheets with the length of 12 multiplied by 24 multiplied by 1mm (the coating length is 6mm), and drying to obtain a welding layer, wherein the thickness of the first welding layer is 20 microns, and the thickness of the second welding layer is 20 microns. Cleaning glass sheets with welding layers by using ethanol and acetone, then washing and drying, then oppositely arranging the welding layers on the two glass sheets, respectively arranging a first electrode and a second electrode at two ends of the welding layers, respectively connecting the first electrode and the second electrode with a positive electrode and a negative electrode of a power supply, heating the glass sheets to 500 ℃, then switching on the power supply to electrify the welding layers, wherein the electrified current density is 1A/dm²And simultaneously pressurizing the two glass sheets for 5 hours at the pressure of 0.4MPa, removing the first electrode and the second electrode after the fusion bonding layer is melted, solidifying the fusion bonding layer, and chemically strengthening the obtained product to obtain a glass composite body (a structural schematic diagram is shown in figure 8).

The glass composite obtained as described above was subjected to a three-point bending test (see FIG. 10 for a test diagram, and two parallel tests were carried out), the load at which the glass composite broke is shown in Table 11, and the breaking position of the glass composite is shown in the position indicated by the arrow a in FIG. 8. The lower span is 12mm, the loading speed is 10mm/min, the loading area is 5mm multiplied by 6mm, and the pressure intensity is the quotient of the loading force and the loading area.

TABLE 11

Sample (I)	Loading (N)	Pressure intensity (Mpa)
			1	17.17	0.57
2	19.42	0.65

The results are as follows: cracks at 110cm

Example 12

And (4) electric fusion between the three layers of glass. Mixing the borosilicate glass powder, the conductive medium containing indium and tin and water according to the mass ratio of 1:5:5 to obtain the conductive paste. As shown in FIG. 11, the prepared conductive paste was applied by spraying to the surfaces of three 12X 24X 1mm glass sheets (coating length: coating length)6mm), wherein each coat of one deck is gone up and down to intermediate level glass 10, then dries the glass that coats the good electrically conductive thick liquids and obtains first butt fusion 11, second butt fusion 21, third butt fusion 12 and fourth butt fusion 31, and wherein first butt fusion 11 thickness is 20 microns, and second butt fusion 21 thickness is 20 microns, and third butt fusion 12 thickness is 20 microns, and the thickness of fourth butt fusion 31 is 10 microns. And cleaning the glass sheets with the welding layers by adopting ethanol and acetone, then washing and drying, then placing the welding layers on the three glass sheets in a pairwise opposite mode, connecting the welding layers on two surfaces of the glass 10 into the first electrode, and connecting the welding layers on the surfaces of the glass 20 and the glass 30 into the second electrode. Connecting the first and second electrodes to a power source, heating the glass sheet to 500 deg.C, and then switching on the power source to electrify the fusion layer at an electrified current density of 2A/dm²While both glass sheets were pressurized at a pressure of 0.4MPa for 2 hours. And after the fusion layer is melted, removing the first electrode and the second electrode, solidifying the fusion layer, and chemically strengthening the obtained product to obtain a glass composite body, wherein a first connecting layer is formed between the glass 10 and the glass 20, and a second connecting layer is formed between the glass 10 and the glass 30.

The glass composite obtained as described above was subjected to a tensile strength test (see fig. 12 for a test diagram, and two parallel experiments were carried out), the glass composite was subjected to a load as shown in table 12, and neither of

samples

1 and 2 exhibited a fracture phenomenon.

TABLE 12

Sample (I)	Loading (N)
		1	145
2	161

The results are as follows: cracks at 120cm

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

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

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

Claims

1. A method of electrically fusion bonding glass, comprising:

forming a first frit layer on at least a portion of a surface of a first glass piece;

forming a second frit layer on at least a portion of a surface of the second glass piece;

under the condition of a preset temperature, the surface of the first welding layer far away from the first glass piece is contacted with the surface of the second welding layer far away from the second glass piece, and the first welding layer and the second welding layer are electrified respectively, so that the first welding layer and the second welding layer are fused;

solidifying the melted first and second fusion layers to form a connecting layer;

the first fusion-bonding layer and/or the second fusion-bonding layer contain glass powder and a conductive medium, the conductive medium is at least one of tin and indium, the melting temperature of the glass powder is lower than the softening temperature of the first glass piece and the second glass piece, and the preset temperature is lower than the melting temperature of the glass powder;

the conductive medium is present in the connection layer in the form of an oxide.

2. The method of claim 1, wherein said first frit layer contains said glass frit and said conductive medium, said second frit layer contains said glass frit and said conductive medium, and said glass frit in said first frit layer is the same as or different from said glass frit in said second frit layer; the conductive medium in the first fused layer may be the same as or different from the conductive medium in the second fused layer.

3. The method of claim 1, wherein forming the first or second fused layer comprises:

mixing the glass powder, the conductive medium and a solvent to obtain conductive slurry;

coating the conductive paste on at least one part of the surface of the first glass piece or the second glass piece to obtain a paste film;

and drying the slurry film to obtain the first welding layer or the second welding layer.

4. The method according to claim 3, wherein the glass frit, the conductive medium and water are mixed in a mass ratio of 1: (5-10): and (5-10) mixing to obtain the conductive paste.

5. The method of claim 1, wherein the first and second fusion layers each independently have a thickness of 0.1-50 microns.

6. The method of claim 1, wherein the temperature at which the first and second frit layers completely melt is below the softening temperature of the first and second glass pieces.

7. The method according to claim 2, wherein the glass frit is selected from at least one of a borosilicate metallic salt, a bismuthate and a phosphate.

8. The method of claim 1, further comprising, after forming the first fused layer or the second fused layer and before energizing the first fused layer and the second fused layer, respectively:

washing the first glass piece and/or the second glass piece with an acid and/or alkaline detergent;

and sequentially washing and drying the first glass piece and/or the second glass piece.

9. The method of claim 8, further comprising, after the washing and before the water washing:

immersing the first glass piece and/or the second glass piece in ammonia water and heating.

10. The method of claim 9, wherein the concentration of the ammonia water is 5.6-18.3mol/L, and the heating temperature is 70-100 ℃.

11. The method as claimed in claim 1, wherein the predetermined temperature is 200-500 ℃.

12. The method of claim 1, wherein energizing the first and second fused layers, respectively, is performed by either step (a) or step (b) as follows:

(a) arranging a first electrode and a second electrode which are contacted with the first welding layer and/or the second welding layer at two ends of the outer edge of the first welding layer and/or the second welding layer respectively, and then connecting the first electrode and the second electrode with a positive electrode and a negative electrode of a power supply respectively;

(b) a third electrode and a fourth electrode which are contacted with the first welding layer are respectively arranged at two ends of the outer edge of the first welding layer; a fifth electrode and a sixth electrode which are contacted with the second welding layer are respectively arranged at two ends of the outer edge of the second welding layer; and then connecting the third electrode and the fourth electrode with the positive electrode and the negative electrode of a power supply respectively, and simultaneously connecting the fifth electrode and the sixth electrode with the positive electrode and the negative electrode of the power supply respectively.

13. The method of claim 12, wherein the first electrode, the second electrode, the third electrode, the fourth electrode, the fifth electrode, and the sixth electrode are each independently a molybdenum electrode or a graphite electrode.

14. The method of claim 1, wherein current density through the first fusion layer or the second fusion layer after energizing the first fusion layer and the second fusion layer, respectively, is independently 0.5 to 5A/dm²。

15. The method of claim 1, wherein the first and second glass pieces are pressed while the first and second frit layers are energized.

16. The method according to claim 15, wherein the pressure treatment is performed at a pressure of 0.05 to 2MPa for a time of 0.5 to 5 hours.

17. A glass composite, comprising:

a first glass member;

a second glass piece;

wherein the first and second glass pieces are fused together by the method of any of claims 1-16.

18. The glass composite of claim 17, wherein at least one of the first glass piece and the second glass piece is formed from a plurality of sub-glass pieces, adjacent two of the sub-glass pieces being fused together by the method of any one of claims 1-16.

19. A glass composite, comprising:

a first glass member;

a second glass piece; and

the connecting layer is positioned between the first glass piece and the second glass piece and used for connecting the first glass piece and the second glass piece, and the connecting layer contains glass powder oxide and oxide of a conductive medium;

20. The glass composite of claim 19, wherein the glass frit oxide comprises at least one of a borosilicate glass frit oxide, a bismuthate glass frit oxide, and a phosphate glass frit oxide, and the conductive medium comprises at least one of indium and tin.

21. The glass composite according to claim 20, wherein the indium and/or tin is present in an amount of 31 to 63% by mass, based on the total mass of the joining layer.

22. A display device comprising the glass composite of any one of claims 17-21.

23. A terminal device housing, wherein at least a portion of the terminal device housing is made from the glass composite of any one of claims 17-21.

24. A terminal device enclosure according to claim 23, wherein the glass composite body according to any one of claims 17 to 21 is configured such that the first glass member of the glass composite body is a plate glass member and the second glass member of the glass composite body is a frame-shaped glass member, and the frame-shaped glass member is provided on an outer peripheral edge of the plate glass member.

25. A terminal device comprising the display device of claim 22 or the terminal device housing of claim 23 or 24.