Glass cover plate, manufacturing method thereof and mobile terminal

A manufacturing method and glass cover technology, applied in glass molding, glass manufacturing equipment, glass reshaping, etc., can solve serious homogeneity, lack of novelty, difficulty in meeting people's requirements for high-quality appearance of products, etc. question

Inactive Publication Date: 2016-11-23

VIVO MOBILE COMM CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method for manufacturing a glass cover, a glass cover, and a mobile terminal, so as to solve the problem that the glass cover in ...

Method used

Here, by cutting and hot-pressing the glass substrate, a 3D hyperboloid glass is obtained, and the glass cover made of the 3D hyperboloid glass has a more beautiful and novel appearance effect, and has a better Visual effect.

In summary, the manufacturing method of the glass cover plate of the embodiment of the present invention forms a 3D hyperboloid glass cover plate with specific color and texture through a brand-new process, which has a novel shape and good visual effect; in many consumer electronics The product provides highly differentiated effects and experiences, and satisfies people's high-quality appearance requirements for glass cover plates; and the manufacturing cost is low, mass production is possible, and it has broad application prospects. It effectively solves the problem that the glass cover plates in the prior art are basically flat or 2.5D, have serious homogeneity, lack of novelty, and are difficult to meet people's requirements for high-quality appearance of products.

In the above-mentioned steps of the embodiment of the present invention, because CNC can adopt the silver-steel supporting emery wheel and the convex positioning jig designed with combined cutting tools, the wear resistance is stronger on the one hand, and the profile on the small glass 1 is also on the other hand Contours and curved surfaces can be processed at one time without changing tools midway, which improves the yield and processing efficiency.

It should be noted that, no matter the ink of the first predetermined color of the first layer or the ink of the first predetermined color of the second layer, in order to ensure the coloring effect of the first area, in the present invention, all can be processed as required in each By repeating the respective manufacturing processes many times, the first predetermined color covered with a better thickness is obtained, so as to improve the color effect. Usually, the total thickness of the final ink is controlled at 30±5 μm.

The manufacture method of the glass cover plate of the embodiment of the present invention forms the 3D hyperboloid glass cover plate with specific color through brand-new process production, novel appearance, visual effect is good, satisfied people's high-quality glass cover plate Appearance requirements, and low manufacturing cost, can be mass-produced, has a wide range of application prospects. It effectively solves the problem that the glass cover plates in the prior art are basically flat or 2.5D, have serious homogeneity, lack of novelty, and are difficult to meet people's requirements for high-quality appearance of products.

[0031] Here, by using a pre-set hot-pressing mold and using a uniform pressure at a first predetermined temperature to hot-press the first-stage glass substrate, a hyperbolic glass substrate with a better molding effect can be quickly obtained.

[0039] Concretely, in the above-mentioned step 1012, the graphite material is preferably used in the hot pressing mold, and the surfac...

Abstract

The invention provides a glass cover plate, a manufacturing method thereof and a mobile terminal, relates to the technical field of terminal manufacturing and aims at solving the problem that existing glass cover plates are basically planar or 2.5D, serious in homogenization and difficult to meet high-quality appearance requirements of people. The manufacturing method includes: subjecting a glass substrate to cutting and hot pressing to obtain a double-curved-surface glass substrate, wherein the edge of each of the front and the back of the double-curved-surface glass substrate is arc-surfaced, and the arc surfaces of the edges of the front and the back of the double-curved-surface glass substrate are identical in bending direction; forming a first area covered with a first preset color on the back of the double-curved-surface glass substrate to obtain a double-curved-surface glass cover plate, wherein the first area refers to areas except for a preset middle window area and preset holes on the double-curved-surface glass substrate. Through the scheme, the 3D double-curved-surface glass substrate with a specific color is formed, is novel and attractive in appearance, meets the high-quality appearance requirements of people on the glass cover plate and is low in manufacturing cost.

Application Domain

Details for portable computersGlass reforming apparatus +3

Technology Topic

EngineeringHot pressing +1

Image

Examples

Experimental program(3)

Example

[0019] First embodiment

[0020] Such as figure 1 As shown, the manufacturing method of the glass cover plate of the embodiment of the present invention includes:

[0021] Step 101, cutting and hot pressing the glass substrate to obtain a hyperboloid glass substrate; the edges of the front and back sides of the hyperboloid glass substrate are arc surfaces, and the edges of the front and back sides of the hyperboloid glass substrate The curved surfaces of the parts have the same bending direction.

[0022] Here, the 3D hyperboloid glass is obtained by cutting and hot pressing the glass substrate, and the glass cover made of the 3D hyperboloid glass has a more beautiful and novel appearance effect, and has a better visual effect.

[0023] Step 102, forming a first area covered with a first predetermined color on the reverse surface of the hyperboloid glass substrate to obtain a hyperboloid glass cover plate; the first area is a predetermined intermediate window area on the hyperboloid glass substrate And the area outside the predetermined opening.

[0024] Here, by forming a first region of a first predetermined color on the reverse surface of the hyperboloid glass substrate, a 3D hyperboloid glass cover plate with a specific color is obtained.

[0025] For example, the first predetermined color can be white, pink, pink green, pink purple, rose gold, etc. Specifically, any color can be selected according to actual needs, which is not limited here.

[0026] The manufacturing method of the glass cover plate of the embodiment of the present invention forms a 3D hyperboloid glass cover plate with a specific color through a brand-new process, which has a novel appearance and good visual effect, which meets people's high-quality appearance requirements for the glass cover plate. And the manufacturing cost is low, can be mass-produced, and has a wide range of application prospects. This effectively solves the problem that the glass cover plates in the prior art are basically flat or 2.5D, with serious homogeneity, lack of novelty, and difficulty in meeting people's requirements for high-quality appearance of products.

[0027] Preferably, the steps of step 101 may include:

[0028] Step 1011, cutting the glass substrate to obtain a first-stage glass substrate of a predetermined size and shape.

[0029] Here, first, the glass substrate is cut according to a predetermined size and shape, so that the cut glass substrate matches the size of the terminal device.

[0030] Step 1012, hot-pressing the first-stage glass substrate at a first predetermined temperature through a preset hot-pressing mold to obtain a first-stage hyperboloid glass substrate.

[0031] Here, through the preset hot pressing mold, the first stage glass substrate is hot pressed with a uniform pressure at a first predetermined temperature, and a hyperboloid glass substrate with better molding effect can be quickly obtained.

[0032] Among them, the first-stage glass substrate can be gradually heated up, sequentially heated to a softened state, and then the softened glass substrate can be hot-pressed.

[0033] Step 1013, cooling the first-stage hyperboloid glass substrate to obtain a second-stage hyperboloid glass substrate.

[0034] Here, after the glass substrate is hot-pressed in a high-temperature state, it is necessary to cool the obtained hyperboloid glass substrate to room temperature to further process the hyperboloid glass substrate.

[0035] Among them, the first-stage hyperboloid glass substrate can be gradually cooled, and then cooled to room temperature sequentially.

[0036] At this time, through processing such as cutting and hot pressing, a hyperboloid glass substrate with a better forming effect is obtained, which provides a guarantee for the subsequent further processing.

[0037] Specifically, in the above step 1011, the large piece of glass substrate can be cut into small pieces of glass of corresponding size through blanking first; then CNC (Computer Numerical Control, computer numerical control machine tool) is used to process the contour and edge of the small piece of glass The surface; such as figure 2 As shown, the small piece of glass 1 undergoes CNC processing to obtain a first-stage glass substrate 2 of a predetermined size and shape.

[0038] In the above-mentioned steps of the embodiment of the present invention, since the CNC can adopt a silver steel supporting grinding wheel and a convex positioning jig designed with a combined tool, it has strong abrasion resistance, and also has a strong resistance to the contour and curved surface of the small piece of glass 1. The parts can be processed and formed at one time without changing the tool in the middle, which improves the yield and processing efficiency.

[0039] Specifically, in the above step 1012, the hot pressing mold preferably uses graphite material, and the surface of the graphite material is polished with high precision. Because the hot press mold made of graphite has good thermal conductivity, the hot press molding is fast, and the surface of the graphite material is polished with high precision to ensure the flatness and smoothness of the finished surface; secondly, because the graphite material has high temperature resistance The performance and thermal expansion coefficient are also very small. The hot pressing mold in the embodiment of the present invention uses graphite material, which can extend the service life.

[0040] Among them, the hot pressing mold may include an upper pressing plate 3 and a lower pressing plate 4, and the upper pressing plate 3 is arranged above the lower pressing plate 4. The lower surface of the upper pressing plate 3 forms a first arc shape corresponding to the reverse surface of the hyperboloid glass substrate, and the upper surface of the lower pressing plate 4 forms a second arc surface shape corresponding to the front surface of the hyperboloid glass substrate. In addition, the upper surface of the upper pressing plate 3 and the lower surface of the lower pressing plate 4 are respectively provided with heaters 5.

[0041] Such as image 3 As shown in the above step 1012, when the first-stage glass substrate 2 is hot-pressed by the hot-pressing mold, the first-stage glass substrate 2 can be placed between the upper platen 3 and the lower platen 4 of the hot-pressing mold. When the first stage glass substrate 2 is still in a flat shape; then the first stage glass substrate 2 is gradually heated by the heater 5, so that the glass is sequentially heated to a softened state; then the upper platen 3 is heated at the first predetermined temperature Apply pressure from above to make the lower surface of the upper plate 3 and the upper surface of the lower plate 4 tightly fasten together under pressure. At this time, the glass substrate 2 is deformed in the first stage; finally the upper plate 3 is moved from above the lower plate 4 Open, take out the formed hyperboloid glass substrate and gradually lower the temperature.

[0042] The general hot pressing process temperature is set between 500° C. and 780° C., and the first predetermined temperature can refer to the general hot pressing process temperature setting.

[0043] Further, the above steps 1012 and 1013 may include the following 11 forming steps: the first step is heating up, the temperature is 500°C; the second step is heating up, the temperature is 550°C; the third step is heating up, the temperature is 650°C; the fourth step is heating up, the temperature is 750°C; the fifth step of pressurization, temperature 750°C, pressure 20N/cm2; the sixth step of heating and pressurizing, temperature 770°C, pressure 30N/cm2; the seventh step of heating and pressure reduction, temperature 800°C, pressure 20N/cm2; The eighth step is to cool down, the temperature is 750°C; the ninth step is to cool down, the temperature is 700°C; the tenth step is to cool down, the temperature is 600°C; the eleventh step is to cool down, the temperature is 550°C; the following can also include 4 steps to cool outside the equipment, gradually cooling To room temperature, each step takes 90 seconds.

[0044] At this time, the material put into the hot press mold is gradually heated, sequentially heated, gradually pressurized, and surplus cooling is performed to obtain a hyperboloid glass substrate with a better molding effect.

[0045] After the hyperboloid glass substrate is obtained, a specific color can be formed on the reverse side of the hyperboloid glass substrate through step 102 described above. Preferably, the steps of step 102 above may include:

[0046] Step 1021: Disposing a protective film on the back surface of the hyperboloid glass substrate except for the first area.

[0047] Here, firstly, a protective film is provided in areas other than the first area (such as the predetermined intermediate window area and the predetermined opening area) to avoid the influence on these areas in the subsequent processing.

[0048] Step 1022, spraying and baking treatment with a first predetermined color ink on the reverse surface of the hyperboloid glass substrate.

[0049] Here, the first predetermined color ink, such as white ink, is uniformly sprayed on the entire reverse surface of the hyperboloid glass substrate, and after baking, the hyperboloid glass substrate with the entire reverse surface covered with the first predetermined color is obtained.

[0050] Step 1023, removing the protective film to form a first area covered with a first layer of a first predetermined color.

[0051] Here, after the protective film is removed, due to the shielding effect of the protective film, the predetermined intermediate window area and the predetermined opening area will not be colored, so a first area covered with the first predetermined color of the first layer can be formed. Preferably, the thickness of the first predetermined color ink of the first layer is 8-10 μm.

[0052] However, it should be known that the first predetermined color of the first layer covered on the first area often affects the color effect due to small thickness or uneven coverage. Therefore, the first predetermined color covered with the first layer After the step of coloring the first area, it also includes:

[0053] In step 1024, the reverse surface of the hyperboloid glass substrate is sprayed, shielded, and exposed with a first predetermined color photosensitive ink to form a first area covered with a second layer of the first predetermined color.

[0054] Here, in order to enhance the coloring effect of the first area, spraying, masking and exposure treatments are used to form a second layer of ink of the first predetermined color on the first layer of ink in the first area on the reverse side of the hyperboloid glass substrate, so as to be covered with two layers The first area of the first predetermined color. Preferably, the thickness of the photoresist of the first predetermined color of the second layer is 8-10 μm.

[0055] In addition, in the embodiment of the present invention, after the step of forming the first area covered with the first predetermined color of the second layer, the method further includes:

[0056] In step 1025, the reverse surface of the hyperboloid glass substrate is sprayed, soft-baked, exposed, developed, and hard-baked with a second predetermined color photoresist to form a second layer covered with a second predetermined color on the first predetermined color. The first area.

[0057] Here, on the first area covered with the first predetermined color, the second predetermined color photoresist is used for spraying, soft baking, exposure, development and hard baking, and then covered with the second predetermined color. Preferably, the step 1025 adopts a yellow light process, which is a photolithography technology, and uses a photosensitive material as a photoresist. The photosensitive material undergoes a chemical change under the action of UV light, and becomes a novel soluble in acid or alkali. substance.

[0058] At this time, a specific color is formed on the reverse side of the hyperboloid glass substrate, thereby obtaining a 3D hyperboloid glass cover plate with a specific color, which increases novelty and beautifies the appearance. The two-layer large-surface coloring process of the first predetermined color and the process of using the second predetermined color photoresist as the cover bottom avoid the light transmission of the first predetermined color and further ensure the color effect formed on the 3D hyperboloid glass cover. And the process effect is good and the cost is low.

[0059] It should be noted that, regardless of the ink of the first predetermined color of the first layer or the ink of the first predetermined color of the second layer, in order to ensure the coloring effect of the first area, the present invention will pass multiple times in the respective treatments as needed. The respective manufacturing processes are repeated to obtain the first predetermined color covered with a better thickness, thereby improving the color effect. Often, the total thickness of the resulting ink will be controlled at 30±5 μm.

[0060] Among them, as mentioned above, the first predetermined color may be white, pink, pink green, pink purple, rose gold, etc. Specifically, any color can be selected according to actual needs, which is not limited here.

[0061] The second predetermined color is overlaid on the first predetermined color to prevent the first predetermined color from transmitting light, so darker colors such as black, blue and black can be selected. Of course, the second predetermined color can also be selected according to actual needs, which is not limited here.

[0062] Among them, before using a specific color ink or photoresist to uniformly spray the entire reverse surface of the hyperboloid glass substrate, a corresponding spraying jig can be made according to the shape of the hyperboloid glass substrate, and then the spraying jig is used to further spray The area is shaded. The spraying distance is generally 13cm. In the baking treatment, the baking time is preferably 10 minutes, and the baking temperature is preferably 150°C.

[0063] Among them, preferably, the protective film is a high temperature resistant polyester film.

[0064] It should be understood that high temperature resistant polyester film, also known as PET film, has excellent physical properties, chemical properties, dimensional stability, transparency, and recyclability, and can achieve better performance in the predetermined intermediate window area and the predetermined opening area. Protection effect. Of course, the protective film can also be realized by using a thin film of other materials, which will not be repeated here.

[0065] Specifically, in the above step 1024, the step of spraying, masking and exposing the back surface of the hyperboloid glass substrate with the first predetermined color photosensitive ink may include:

[0066] Step 10241: spraying the first predetermined color photosensitive ink on the reverse surface of the hyperboloid glass substrate.

[0067] Here, a corresponding spraying jig can be made according to the shape of the hyperboloid glass substrate, and then the first predetermined color photosensitive ink, such as white photosensitive ink, can be uniformly sprayed on the entire reverse surface of the glass substrate through the spraying jig.

[0068] Step 10242, mask the photosensitive ink of the first predetermined color on the hyperboloid glass substrate except for the first area.

[0069] Here, the masking plate MASK can be used to mask the ink that needs to be faded, that is, the photosensitive ink of the first predetermined color except the first area, leaving the photosensitive ink of the first predetermined color in the first area exposed.

[0070] For example, the photosensitive ink in the middle window area and some opening positions can be masked. The masked ink can be removed by subsequent steps.

[0071] In step 10243, the hyperboloid glass substrate is exposed to ultraviolet light and then cleaned.

[0072] Here, the hyperboloid glass substrate is first exposed with ultraviolet rays. After the action of ultraviolet rays, the photosensitive ink in the first area is exposed and cured, and adheres to the surface of the hyperboloid glass substrate; the shaded area is not illuminated and thus is not cured. Then the hyperboloid glass substrate is cleaned. After rinsing with clean water, the ink in the masked area will be washed away, leaving only the ink in the first area, thereby forming a specific color in the first area.

[0073] Among them, an ultraviolet UV lamp can be used to expose the hyperboloid glass substrate.

[0074] At this time, through the method of exposure and development of the photosensitive ink, a hyperboloid glass substrate with a second layer of the first predetermined color formed in the first area is obtained. The process flow is short, the efficiency is high, the process effect is good, and the cost is low.

[0075] In order to further prevent the photosensitive ink of the first predetermined color from transmitting light, it is necessary to cover a layer of darker ink on the photosensitive ink of the first predetermined color as a cover.

[0076] Specifically, in step 1025, the steps of applying a second predetermined color photoresist to the reverse surface of the hyperboloid glass substrate to perform spraying, soft baking, exposure, development and hard baking treatments may include:

[0077] Step 10251: spraying the second predetermined color photoresist on the reverse surface of the hyperboloid glass substrate.

[0078] Here, a corresponding spraying jig can be made according to the shape of the hyperboloid glass substrate, and then the second predetermined color photoresist, such as black photoresist, can be uniformly sprayed on the entire reverse surface of the glass substrate by the spraying jig.

[0079] Step 10252: Perform soft baking treatment on the hyperboloid glass substrate to obtain a semi-cured second predetermined color photoresist.

[0080] Here, the hyperboloid glass substrate sprayed with the second predetermined color photoresist is soft-baked, so that the original liquid second predetermined color photoresist is semi-cured. Specifically, the baking time can be 5 minutes, and the baking temperature can be 180 ℃.

[0081] Step 10253, after masking the semi-cured second predetermined color photoresist in the first region, an exposure process is performed by using ultraviolet rays.

[0082] Here, the masking plate MASK can be used to cover the area where the second predetermined color photoresist needs to be reserved, that is, to shield the second predetermined color photoresist of the first area, leaving the second area of the hyperboloid glass substrate except the first area. The predetermined color photoresist is exposed outside.

[0083] For example, the second predetermined color photoresist in the middle window area and some opening positions are exposed to the outside, and through subsequent steps, the second predetermined color photoresist exposed to the outside can be removed.

[0084] In this step, after shielding the semi-cured second predetermined color photoresist in the first region, ultraviolet light is used to expose the hyperboloid glass substrate, and the second predetermined color photoresist will undergo chemical changes under the action of ultraviolet light. , It becomes a new substance easily soluble in acid or alkali. Among them, the hyperboloid glass substrate can be exposed with an ultraviolet UV lamp. The exposure wavelength can be 360nm and the exposure energy can be 1800MJ.

[0085] Step 10254, after immersing the hyperboloid glass substrate in a developer to dissolve it, perform a hard-bake curing treatment.

[0086] In this step, after the hyperboloid glass substrate is immersed in the developer, the photoresist of the exposed part is quickly dissolved in the developer, and the photoresist of the unexposed part dissolves slowly, thereby showing the pattern of the photoresist of the unexposed part. A specific color is formed on the hyperboloid glass substrate, wherein the developer may specifically be tetramethylammonium hydroxide with a concentration of 2.38%. In this step, the hard-bake curing temperature is 240°C, and the baking time is 20 minutes.

[0087] At this time, the photoresist of the second predetermined color is covered on the basis of the first predetermined color ink through the yellow light process, which avoids the penetration of the first predetermined color ink and ensures the appearance effect achieved by the first predetermined color.

[0088] Here, taking the black photoresist as an example, the thickness of the black photoresist after a single yellowing process is about 3-5 μm. Specifically, the number of yellowing processes can be adjusted according to the degree of black cover required.

[0089] In the embodiment of the present invention, in order to further increase the appearance effect of the glass cover plate, preferably, before the step of step 102, the manufacturing method may further include:

[0090] Step 103, forming a second area covered with a third predetermined color on the reverse surface of the hyperboloid glass substrate, the second area being between the first area on the hyperboloid glass substrate and the predetermined intermediate window area And the second area surrounds the predetermined intermediate window area.

[0091] Here, the second area may surround the middle window area with a line of a predetermined shape to form a specific pattern. The predetermined shape of the line may be a straight line or a lattice-shaped line.

[0092] The third predetermined color can also be selected according to actual needs, such as black, blue, etc., which is not limited here.

[0093] Preferably, the third predetermined color and the first predetermined color are different colors.

[0094] Assuming that the second area surrounds the middle window area by a straight line and the third predetermined color is black, the second area appears as a black frame.

[0095] At this time, by forming a second area covered with a third predetermined color on the hyperboloid glass substrate, a 3D hyperboloid glass cover with a specific texture (such as a black frame) can be obtained, which further increases the novelty and novelty of the glass cover. Appearance effect.

[0096] Preferably, the above step 103 may include:

[0097] Step 1031, spraying a third predetermined color photosensitive ink on the reverse surface of the hyperboloid glass substrate.

[0098] Here, a corresponding spraying jig can be made according to the shape of the hyperboloid glass substrate, and then the third predetermined color photosensitive ink, such as black photosensitive ink, can be evenly sprayed on the entire reverse surface of the glass substrate by the spraying jig.

[0099] Step 1032, mask the photosensitive ink of the third predetermined color except the second area of the hyperboloid glass substrate.

[0100] Here, the masking plate MASK can be used to mask the ink that needs to be faded, that is, the photosensitive ink of the third predetermined color except the second area, leaving the photosensitive ink of the third predetermined color in the second area exposed.

[0101] For example, the photosensitive ink in the first area, the middle window area and some opening positions can be shielded. The masked ink can be removed by subsequent steps.

[0102] In step 1033, the hyperboloid glass substrate is exposed to ultraviolet light and then cleaned to form a second area covered with a third predetermined color.

[0103] Here, first, the hyperboloid glass substrate is exposed with ultraviolet rays. After the action of ultraviolet rays, the photosensitive ink in the second area is exposed and cured, and adheres to the surface of the hyperboloid glass substrate; the shaded area has no light and is not cured. Then the hyperboloid glass substrate is cleaned. After rinsing with clean water, the ink in the masked area will be washed away, leaving only the ink in the second area, thereby forming a second area with specific lines on the hyperboloid glass substrate. The thickness of the second region is 3-5um.

[0104] Among them, an ultraviolet UV lamp can be used to expose the hyperboloid glass substrate.

[0105] At this time, through the method of exposure and development of photosensitive ink, a second area with specific lines can be formed on the reverse side of the hyperboloid glass substrate, so as to obtain a 3D hyperboloid glass cover plate with specific lines, which increases the novelty and beautifies the appearance effect . In addition, the method of exposure and development of the photosensitive ink has a high precision, and the lines can be made very thin, so a finer texture can be formed, thereby further increasing the appearance effect formed by the second area.

[0106] Here, taking the black photosensitive ink as an example, the thickness of the black ink after a single exposure and development is about 3-5 μm. Specifically, the number of exposure and development can be adjusted according to the required black frame thickness.

[0107] Further, before the above step 102, the manufacturing method may further include a strengthening step, which specifically includes:

[0108] Step 104: Pre-configure molten salt with a second predetermined temperature;

[0109] Step 105, strengthening the hyperboloid glass substrate with the molten salt to obtain a strengthened hyperboloid glass substrate.

[0110] Here, the pre-configured high-temperature molten salt can change the surface composition of the glass through the mechanism of ion diffusion, thereby increasing the strength of the glass. Specifically, when the glass is immersed in a high-temperature molten salt at a certain temperature, the sodium ions in the glass and the potassium ions in the molten salt exchange with each other due to diffusion, resulting in "crowding" phenomenon, which causes compressive stress on the glass surface. Therefore, the strength of the glass can be improved.

[0111] At this time, the glass is strengthened by the molten salt, which increases the strength of the glass cover and improves the practicability of the product.

[0112] The molten salt material may include: KNO3, AL2O3, potassium silicate, diatomaceous earth and some other additives (the ratio of KNO3, AL2O3, potassium silicate and diatomaceous earth is preferably 6:2:1:1).

[0113] The temperature of the molten salt bath, that is, the second predetermined temperature may be: 380-550°C, and the pure exchange time of ions in the glass and molten salt is preferably above 4H.

[0114] An example of a specific implementation process of the embodiment of the present invention is described as follows:

[0115] Such as Figure 4 As shown, the manufacturing method of the glass cover plate of the embodiment of the present invention includes:

[0116] Step 201: After cutting a large piece of glass substrate into small pieces of glass, use CNC to process the contour and curved surface of the small piece of glass to obtain a first-stage glass substrate of a predetermined size and shape;

[0117] Step 202, processing the first-stage glass substrate into a hyperboloid glass substrate through 11 forming processes through a preset hot pressing mold;

[0118] Step 203: Strengthen the hyperboloid glass substrate through the pre-configured high-temperature molten salt;

[0119] Step 204, spraying, masking and exposing the back surface of the hyperboloid glass substrate with black photosensitive ink, and forming a black frame surrounding the middle window area on the back surface of the hyperboloid glass substrate;

[0120] Step 205, setting a protective film on the black frame area, the predetermined middle window area and the predetermined opening area on the reverse side of the hyperboloid glass substrate;

[0121] Step 206: spraying and baking the back surface of the hyperboloid glass substrate with white ink, and covering the entire back surface of the hyperboloid glass substrate with white ink;

[0122] Step 207, removing the protective film, and forming a white area covering the first layer of white ink on the first area on the reverse side of the hyperboloid glass substrate;

[0123] Step 208: Use white photosensitive ink to spray, mask and expose the reverse surface of the hyperboloid glass substrate, and cover the white area on the reverse surface of the hyperboloid glass substrate with a second layer of white ink;

[0124] Step 209: Apply black photoresist to the back of the hyperboloid glass substrate for spraying, soft baking, exposure, development and hard baking, and after covering the white area of the hyperboloid glass substrate with a black cover, the final hyperboloid glass is obtained Cover plate.

[0125] The hyperboloid glass cover produced by the above process, such as Figure 5 As shown, a specific color (white area 6) and texture (black frame 8 surrounding the middle window area 7) are formed on the hyperboloid glass cover.

[0126] In summary, the manufacturing method of the glass cover plate of the embodiment of the present invention forms a 3D hyperboloid glass cover plate with a specific color and texture through a brand-new process, which has a novel appearance and good visual effect; it is provided in many consumer electronic products It has highly differentiated effects and experience, and meets people's requirements for high-quality appearance of glass cover; and low manufacturing cost, can be mass-produced, and has a wide range of application prospects. This effectively solves the problem that the glass cover plates in the prior art are basically flat or 2.5D, with serious homogeneity, lack of novelty, and difficulty in meeting people's requirements for high-quality appearance of products.

Example

[0127] Second embodiment

[0128] The embodiment of the present invention provides a glass cover plate, the edge parts of the front and back sides of the glass cover plate are arc surfaces, and the arc surfaces of the edge parts of the front and back sides of the glass cover plate have the same bending direction;

[0129] A first area covered with a first predetermined color is formed on the reverse surface of the glass cover plate, and the first area is the area on the glass cover plate excluding the predetermined middle window area and the predetermined opening.

[0130] The glass cover plate of the embodiment of the present invention is a 3D hyperboloid glass cover plate with a specific color, which has a novel appearance and good visual effects; it provides highly differentiated effects and experiences in many consumer electronic products, and satisfies people’s concerns. The glass cover has high-quality appearance requirements; low manufacturing cost, mass production, and wide application prospects. This effectively solves the problem that the glass cover plates in the prior art are basically flat or 2.5D, with serious homogeneity, lack of novelty, and difficulty in meeting people's requirements for high-quality appearance of products.

[0131] It should be noted that the glass cover plate of the embodiment of the present invention can be obtained by the above-mentioned manufacturing method of the glass cover plate. Among them, all the implementation manners in the embodiment of the manufacturing method of the glass cover plate are applicable to the embodiment of the glass cover plate, and the same technical effect can also be achieved.

Example

[0132] The third embodiment

[0133] Since the glass cover of the embodiment of the present invention is applied to a mobile terminal, an embodiment of the present invention also provides a mobile terminal, including: the glass cover as described in the foregoing embodiment.

[0134] The mobile terminal of the present invention may be a mobile electronic device such as a mobile phone and a tablet computer.

PUM

Property	Measurement	Unit
Thickness	3.0 ~ 5.0	µm

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