Forming mold, forming method of glass cover plate and glass cover plate

Abstract

The present invention provides a forming mold for a glass cover plate, the forming mold comprising a concave mold and a convex mold. The concave mold has a receiving groove and a groove connected to the receiving groove, and the depth of the groove is greater than 1 mm. The convex mold matches the concave mold, the convex mold has a protruding portion and a protrusion connected to the protruding portion, and the height of the protrusion is equal to the depth of the groove. The present invention also provides a forming method for a glass cover plate and a glass cover plate. The glass cover plate obtained by the present invention has a good forming effect, and the height of the boss of the glass cover plate is large.

Description

Technical Field

[0001] The present invention relates to the technical field of glass cover plates, and in particular to a forming mold, a forming method of a glass cover plate, and a glass cover plate. Background Art

[0002] As consumers have higher and higher requirements for the aesthetics of glass cover plates, the demand for mobile phone photography has gradually increased. Rear multiple cameras and prominent camera modules have become the appearance features of current mainstream mobile phones. Therefore, this glass cover plate with a crater structure has become a highly respected design solution by major mobile phone manufacturers due to its stronger visual impact and stronger overall sense.

[0003] At present, there are two main processing schemes for mobile phone glass cover plates with this crater structure: one is to use CNC cold carving, which uses a whole piece of thick glass to reserve the camera area and CNC polish the other areas; the other is to use two hot bending methods, the first hot bending is to form the side wall of the boss, and the second hot bending is to form the boss plane. However, if CNC cold carving is used, the glass is brittle and prone to edge collapse, which makes processing difficult and has a low yield; if two hot bending methods are used, there are defects such as low production efficiency, weak three-dimensional appearance of the product, and unclear edges and corners.

[0004] In addition, the height of the crater structure designed in mainstream mobile phones on the market will not exceed 1mm. As consumers' demand for mobile phone photography becomes higher and higher, the size of camera modules is getting larger and larger. The crater structure with a height of no more than 1mm can hardly meet the assembly requirements of camera modules. Summary of the invention

[0005] Based on this, it is necessary to provide a molding mold for a glass cover plate so that the height of the crater structure (i.e., the boss) of the glass cover plate prepared by the molding mold exceeds 1 mm, and the prepared glass cover plate has a strong sense of integrity and visual impact, and has high production efficiency.

[0006] In addition, it is necessary to provide a method for forming a glass cover.

[0007] In addition, it is necessary to provide a glass cover.

[0008] At least one embodiment of the present invention provides a forming mold for a glass cover plate, the forming mold comprising:

[0009] A concave mold, wherein the concave mold has a receiving groove and a groove communicating with the receiving groove, and the depth of the groove is greater than 1 mm; and

[0010] A male mold is matched with the female mold, the male mold has a protruding portion and a protrusion connected to the protruding portion, and the height of the protrusion is equal to the depth of the groove.

[0011] In some of the embodiments, the depth of the groove gradually increases and then gradually decreases along the length direction of the punch.

[0012] In some embodiments, along the length direction of the die, the groove includes a first groove portion, a second groove portion, and a third groove portion that are connected in sequence;

[0013] The depth of the first groove is less than or equal to the depth of the second groove, and the depth of the third groove is less than or equal to the depth of the second groove.

[0014] In some embodiments, along the direction from the first groove portion to the third groove portion, the depth of the first groove portion gradually increases until it increases to the junction of the first groove portion and the second groove portion; along the direction from the first groove portion to the third groove portion, the height of the end of the first groove portion away from the second groove portion is equal to the height of the bottom of the receiving groove, and the depth of the end of the junction of the first groove portion and the second groove portion is equal to the depth of the second groove portion;

[0015] Wherein, along the direction from the first groove portion to the third groove portion, the depth of the second groove portion remains unchanged;

[0016] Among them, along the direction from the first groove portion to the third groove portion, the depth of the third groove portion gradually increases from the junction of the second groove portion and the third groove portion, and along the direction from the first groove portion to the third groove portion, the depth of the end of the third groove portion at the junction with the second groove portion is equal to the depth of the second groove portion, and the height of the end of the third groove portion away from the second groove portion is equal to the height of the bottom of the receiving groove.

[0017] In some embodiments, the male mold has a first surface and a second surface opposite to the first surface, the protrusion is arranged on the first surface, the second surface includes a first area and a second area connected to the first area, and the height of the second area is greater than the height of the first area, and the position of the protrusion corresponds to the second area.

[0018] At least one embodiment of the present invention provides a method for forming a glass cover plate, comprising the following steps:

[0019] Providing the above-mentioned molding die;

[0020] placing a flat sheet of glass on the concave mold;

[0021] Clamping the concave mold and the convex mold so that the flat glass is located between the concave mold and the convex mold; and

[0022] The flat glass is subjected to a molding process to obtain a glass cover plate, wherein the glass cover plate has a boss with a height greater than 1 mm.

[0023] In some embodiments, the molding process includes the following steps:

[0024] Preheating the flat glass;

[0025] forming the preheated flat glass; and

[0026] The formed flat glass is cooled.

[0027] In some embodiments, when the preheated flat glass is molded, the temperature of the surface of the flat glass adjacent to the male mold is lower than the temperature of the surface of the flat glass adjacent to the female mold.

[0028] In some of the embodiments, when the flat glass is preheated, pressure is also applied to the flat glass segments, and the applied pressure is gradually increased.

[0029] At least one embodiment of the present invention provides a glass cover plate prepared by the above-mentioned molding method.

[0030] The glass cover plate prepared by the molding mold of the present invention has a good molding effect, and the height of the boss in the glass cover plate is relatively large, and the height exceeds 1 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of the molding die provided by the present invention;

[0032] Figure 2 for Figure 1 A schematic structural diagram of a concave mold of a molding die shown;

[0033] Figure 3 for Figure 1 A schematic structural diagram of a male die of a forming die shown;

[0034] Figure 4 This is a forming flow chart of the glass cover provided by the present invention.

[0035] Figure numerals: 100 - molding die; 10 - die; 11 - receiving groove; 12 - groove; 121 - first groove portion; 122 - second groove portion; 123 - third groove portion; 20 - punch; 21 - first surface; 22 - second surface; 221 - first area; 222 - second area; 23 - protrusion; 24 - protrusion. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] See also Figure 1 At least one embodiment of the present invention provides a molding die 100 for a glass cover plate. The molding die 100 includes a concave mold 10 and a convex mold 20 matching the concave mold 10 .

[0039] See also Figure 2 In one embodiment, the shape of the die 10 is roughly a cuboid. In one embodiment, one of the surface portions of the die 10 is recessed inward to form a receiving groove 11. In one embodiment, the shape of the receiving groove 11 is also roughly a cuboid. Part of the bottom of the receiving groove 11 is recessed inward to form a groove 12, and the groove 12 is connected to the receiving groove 11. In one embodiment, the depth of the groove 12 is greater than 1 mm. It can be understood that the depth of the groove 12 can also be less than or equal to 1 mm. Specifically, the depth of the groove 12 can be 1.8 mm. The bottom of the die 10 is a complete plane.

[0040] like Figure 2 As shown, mutually perpendicular X-axis, Y-axis and Z-axis are established. In one embodiment, along the X-axis direction, the depth of the groove 12 gradually increases and then gradually decreases. Specifically, along the X-axis direction, the groove 12 includes a first groove portion 121, a second groove portion 122 and a third groove portion 123 that are connected in sequence. It can be understood that the X-axis direction is the length direction of the die 10, the Y-axis direction is the width direction of the die 10, and the Z-axis direction is the height or thickness direction of the die 10.

[0041] In one embodiment, the top view of the first groove portion 121 is approximately a semicircle. In one embodiment, along the direction of the X-axis, the depth of the first groove portion 121 gradually increases until it increases to the junction of the first groove portion 121 and the second groove portion 122. That is, in the first groove portion 121, the depth at the junction of the first groove portion 121 and the second groove portion 122 is the largest. In one embodiment, along the direction of the X-axis, the height of the end of the first groove portion 121 away from the second groove portion 122 is approximately equal to the height of the bottom of the receiving groove 11, and the depth of the end of the junction of the first groove portion 121 and the second groove portion 122 is approximately equal to the depth of the second groove portion 122.

[0042] In one embodiment, the top view of the second groove portion 122 is substantially rectangular. In one embodiment, along the X-axis direction, the depth of the second groove portion 122 remains unchanged. The depth of the second groove 12 is greater than or equal to the depth of the first groove 12, and the depth of the second groove portion 122 is the deepest depth of the groove 12. It should be noted that the relationship between the depth of the first groove portion 121, the depth of the second groove portion 122, and the depth of the third groove portion 123 is not limited to the depth of the first groove portion 121, the depth of the second groove portion 122, and the depth of the third groove portion 123. Figure 2 Shown in.

[0043] In one embodiment, the top view of the third groove portion 123 is also roughly semicircular. In one embodiment, along the direction of the X-axis, the depth of the third groove portion 123 gradually increases from the junction of the second groove portion 122 and the third groove portion 123. That is, in the third groove portion 123, the depth of the junction of the second groove portion 122 and the third groove portion 123 is the largest. In one embodiment, along the direction of the X-axis, the depth of the end of the junction of the third groove portion 123 and the second groove portion 122 is roughly equal to the depth of the second groove portion 122, and the height of the end of the third groove portion 123 away from the second groove portion 122 is roughly equal to the height of the bottom of the receiving groove 11. Wherein, the depth of the third groove 12 is less than or equal to the depth of the second groove 12.

[0044] The present invention designs the depth of the first groove portion 121, the depth of the second groove portion 122 and the depth of the third groove portion 123 as described above in order to reduce the mold clearance at the arc position at both ends of the camera module to avoid surface collapse due to the failure of pressing at the two ends.

[0045] In one embodiment, the material of the concave mold 10 is graphite. Graphite has the characteristics of fast heat conduction, easy processing and slightly larger expansion coefficient than glass, and is suitable as a material for 3D hot bending molds.

[0046] See also Figure 1 and Figure 3 In one embodiment, the shape of the punch 20 is also roughly a rectangular parallelepiped. The punch 20 has a first surface 21 and a second surface 22 opposite to the first surface 21. In one embodiment, a portion of the first surface 21 protrudes outward to form a protrusion 23. The shape of the protrusion 23 matches the shape of the receiving groove 11, and the height of the protrusion 23 is roughly equal to the depth of the receiving groove 11. In one embodiment, a portion of the surface of the protrusion 23 protrudes outward to form a protrusion 24. The shape of the protrusion 24 matches the shape of the groove 12, and the height of the protrusion 24 is the same as the depth of the groove 12.

[0047] In one embodiment, the second surface 22 includes a first area 221 and a second area 222 connected to the first area 221. In one embodiment, the shape of the first area 221 is approximately rectangular, the shape of the second area 222 is approximately U-shaped, and the second area 222 is arranged around the first area 221. In one embodiment, one of the long sides of the first area 221 coincides with one of the long sides of the punch 20, and the other long side and two short sides of the first area 221 are connected to the second area 222. In one embodiment, the height of the second area 222 is greater than the height of the first area 221. That is, there is a height difference between the first area 221 and the second area 222. In one embodiment, the height difference between the first area 221 and the second area 222 is 0.5 mm. Wherein, the position of the protrusion 24 corresponds to the second area 222.

[0048] It can be understood that the shape of the first region 221 is not limited to a rectangle, and the shape of the second region 222 is not limited to a U-shape, as long as the height of the second region 222 is greater than the height of the first region 221. In one embodiment, the width of the second region 222 located on one side of the first region 221 along the length direction of the punch 20 is defined as a first width w 1 The width of the second region 222 located on the other side of the first region 221 along the length direction of the punch 20 is defined as a second width w 2 , then the first width w 1 Greater than the second width w 2 .

[0049] In the present invention, the second surface 22 is configured as a surface with a height difference, and the first width w is configured 1 Greater than the second width w2 , which is beneficial to the A corner end of the molding die 100 (ie, close to the second width w 2 The corner end) is subjected to a smaller pressure to assist in forming, and the camera module area of ​​the punch 20 is subjected to the main pressure and plays the main forming role, that is, the main force position is in the plane area of ​​the camera module.

[0050] In one embodiment, the material of the male mold 20 is also graphite.

[0051] The molding mold 100 can be used for molding a glass cover plate. In one embodiment, the glass cover plate can be a glass back cover. In one embodiment, the glass back cover can be a mobile phone glass back cover.

[0052] See also Figure 4 At least one embodiment of the present invention provides a method for forming a glass cover plate, comprising the following steps:

[0053] Step S11, providing the above-mentioned molding die 100.

[0054] The specific structure of the molding die 100 can be found in the previous description and will not be described in detail here.

[0055] Step S12: placing the flat glass on the concave mold 10.

[0056] Specifically, the flat glass is placed in the receiving groove 11 .

[0057] The position of the flat glass corresponding to the camera module corresponds to the groove 12. That is, the portion of the flat glass corresponding to the groove 12 forms a subsequent boss, that is, a crater structure. That is, the boss of the glass cover plate prepared subsequently is formed by the groove 12.

[0058] In one embodiment, the flat glass may be a flat glass with a CNC (computer numerically controlled precision machining) margin reserved, so as to facilitate the outer dimensions of the glass cover plate generated by CNC repair after the subsequent hot bending step.

[0059] Step S13, closing the concave mold 10 and the convex mold 20, and placing the flat glass between the concave mold 10 and the convex mold 20.

[0060] Specifically, the receiving groove 11 is aligned with the protruding portion 23 , and the groove 12 is aligned with the protrusion 24 , so that the concave mold 10 and the convex mold 20 are molded together. After the molds are molded together, the flat glass is located between the concave mold 10 and the convex mold 20 .

[0061] In one embodiment, after the mold is closed, when the height of the protrusion 23 and the depth of the receiving groove 11 are both 1.8 mm, the overpressure of the molding die 100 is 0.33 mm. That is, the overpressure of 0.33 mm has greatly exceeded the overpressure of the molding die 100 for conventional 3D products. If the overpressure of the molding die 100 is too small, the punch 20 cannot continue to press down.

[0062] Step S14: using a heat bending device to perform a forming process on the flat glass to obtain a glass cover plate, wherein the glass cover plate has a boss.

[0063] Specifically, the molded forming mold 100 is placed in the heat bending device, and the heat bending temperature, heat bending pressure and heat bending time of the heat bending device are set, so that the flat glass is heat bent using the heat bending device, so that the glass cover has a boss.

[0064] More specifically, the molded forming mold 100 is placed in the heat bending device, and the male mold 20 is heated by the upper plate in the heat bending device, and the female mold 10 is heated by the lower plate in the heat bending device, so that the flat glass in the forming mold 100 is preheated, formed and cooled in sequence, thereby preparing the glass cover plate, and the glass cover plate also has the boss. The boss is a crater structure.

[0065] In one embodiment, the preheating includes a first preheating stage, a second preheating stage, a third preheating stage, a fourth preheating stage and a fifth preheating stage. The preheating is to heat and soften the flat glass in the molding die 100 to facilitate subsequent molding.

[0066] In one embodiment, the molding includes a first molding stage, a second molding stage and a third molding stage.

[0067] In one embodiment, the cooling includes a first cooling stage and a second cooling stage.

[0068] The temperature parameters of the hot bending process in step S14 are specifically shown in Table 1 below.

[0069] Table 1 Temperature values ​​of the upper and lower plates in the bending equipment when the flat glass is bent using the bending equipment

[0070]

[0071] Table 1 is now explained in detail: Since the upper plate and the lower plate in the hot bending equipment are used to heat the male mold 20 and the female mold 10 respectively, the temperature of the upper plate is the temperature of the male mold 20, which is also the temperature of one surface of the flat glass, and the temperature of the lower plate is the temperature of the female mold 10, which is also the temperature of the other surface of the flat glass. Now an example is given: in the first preheating stage, the temperature of the upper plate is 600±40℃, that is, the temperature of the male mold 20 is also 600±40℃, and the temperature of one surface of the flat glass is also 600±40℃; the temperature of the lower plate is 550±40℃, that is, the temperature of the female mold 10 is also 550±40℃, and the temperature of the other surface of the flat glass is also 550±40℃. Please refer to this example for other data in Table 1, and no further details will be given.

[0072] It should be noted that in the first molding stage and the second molding stage, the temperature of the upper plate is lower than the temperature of the lower plate, that is, the temperature of the male mold 20 is lower than the temperature of the female mold 10. This is conducive to reducing the crater area of ​​the glass cover plate and the large flat surface of the molding mold 100, while increasing the molding effect and preventing the flat glass from collapsing during molding.

[0073] The specific pressure parameters of the hot bending process in step S14 are shown in Table 2 below.

[0074] Table 2 Pressure applied to the mold when using the bending equipment to bend flat glass

[0075]

[0076] Table 2 is now explained in detail: Since the flat glass is located in the forming mold 100, the pressure applied to the forming mold 100 is the pressure applied to the flat glass, that is, the pressure to which the flat glass is subjected. An example is now given: During the fifth preheating stage, three pressures of different magnitudes are applied to the forming mold 100 in sequence, that is, during the fifth preheating stage, pressure is applied to the forming mold 100 in three stages, and the pressures applied in the three stages are different. Specifically, in the first stage, the pressure applied to the forming mold 100 is 0.1±0.05Mpa, in the second stage, the pressure applied to the forming mold 100 is 0.35±0.05Mpa, and in the third stage, the pressure applied to the forming mold 100 is 0.8±0.05Mpa. A pressure is applied in the first molding stage, the second molding stage and the third molding stage, that is, in the first molding stage, the pressure applied to the molding mold 100 is 0.8±0.05Mpa, in the second molding stage, the pressure applied to the molding mold 100 is 0.4±0.05Mpa, and in the third molding stage, the pressure applied to the molding mold 100 is 0.3±0.05Mpa.

[0077] In one embodiment, the total preheating time is 100±10s, that is, the total time of the first preheating stage, the second preheating stage, the third preheating stage, the fourth preheating stage and the fifth preheating stage is 100±10s.

[0078] In one embodiment, the total molding time is 100±10s, that is, the total time of the first molding stage, the second molding stage and the third molding stage is 100±10s.

[0079] In one embodiment, the total cooling time is 100±10s, that is, the total cooling time of the first cooling stage and the second cooling stage is 100±10s.

[0080] During preheating, that is, in the fifth preheating stage, the present invention begins to apply pressure to the forming mold 100 in sections, that is, to the flat glass in sections, and the pressure increases gradually, which can pre-form and prevent the flat glass from bursting due to the sharply increased pressure inside the forming mold 100.

[0081] It can be understood that the flat glass forms the glass cover plate under a certain temperature and pressure under the joint action of the groove 12 and the protrusion 23, and forms the boss under the joint action of the groove 12 and the protrusion 24. The depth of the groove 12, the height of the protrusion 24 and the height of the boss are equal. In one embodiment, the height of the boss is greater than 1 mm. It can be understood that the height of the boss can also be less than or equal to 1 mm.

[0082] After obtaining the glass cover plate, the appearance of the glass cover plate may be inspected to determine whether the glass cover plate is qualified.

[0083] In one embodiment, the glass cover plate may be a glass back cover. In one embodiment, the glass back cover may be a mobile phone glass back cover.

[0084] At least one embodiment of the present invention provides a glass cover plate prepared by the above-mentioned molding method.

[0085] The glass cover has the protrusion. In one embodiment, the height of the protrusion is greater than 1 mm. It is understood that the height of the protrusion may also be less than or equal to 1 mm. Specifically, the height of the protrusion may be 1.8 mm. The protrusion is a crater structure.

[0086] In one embodiment, the glass cover plate may be a glass back cover. In one embodiment, the glass back cover may be a mobile phone glass back cover.

[0087] The present invention has the following advantages:

[0088] (i) When the flat glass is formed, the temperature of the upper plate in the heat bending device is set lower than the temperature of the lower plate, which can reduce the mold mark in the crater area.

[0089] (ii) The back structure of the punch adopts a special design so that the pressure during molding can be concentrated in the camera module molding area; the camera module molding area of ​​the die is not a traditional large flat surface design, but height compensation is added at the arcs at both ends, so that the arcs at both ends can be completely pressed; the overpressure during mold closing is designed to be larger, up to 0.33mm. These measures solve the problem of poor surface collapse in the arc area of ​​the camera module.

[0090] (iii) When the flat glass is preheated, pressure is applied and the pressure is applied in a gradually increasing manner, so that the crater structure is more thoroughly formed, meeting the forming requirement of the crater structure height exceeding 1 mm, and the visual impact of the formed product is stronger.

[0091] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A forming mold for a glass cover plate, characterized in that: The molding die comprises: A concave mold, wherein the concave mold has a receiving groove and a groove communicating with the receiving groove, and the depth of the groove is greater than 1 mm; and A male mold, the male mold matches the female mold, the male mold has a protruding portion and a protrusion connected to the protruding portion, and the height of the protrusion is equal to the depth of the groove; The male mold has a first surface and a second surface opposite to the first surface, the protrusion is arranged on the first surface, the second surface includes a first area and a second area connected to the first area, and the height of the second area is greater than the height of the first area, and the position of the protrusion corresponds to the second area; The width of the second region on one side of the first region along the length direction of the punch is defined as a first width w1, and the width of the second region on the other side of the first region along the length direction of the punch is defined as a second width w2, then the first width w1 is greater than the second width w2.

2. The forming mold of the glass cover plate according to claim 1, characterized in that: Along the length direction of the punch, the depth of the groove gradually increases and then gradually decreases.

3. The forming mold of the glass cover plate according to claim 2, characterized in that: Along the length direction of the die, the groove includes a first groove portion, a second groove portion and a third groove portion which are connected in sequence; The depth of the first groove portion is less than or equal to the depth of the second groove portion, and the depth of the third groove portion is less than or equal to the depth of the second groove portion.

4. The forming mold of the glass cover plate according to claim 3, characterized in that: Along the direction from the first groove portion to the third groove portion, the depth of the first groove portion gradually increases until it increases to the junction of the first groove portion and the second groove portion; along the direction from the first groove portion to the third groove portion, the height of the end of the first groove portion away from the second groove portion is equal to the height of the bottom of the receiving groove, and the depth of the end of the junction of the first groove portion and the second groove portion is equal to the depth of the second groove portion; Wherein, along the direction from the first groove portion to the third groove portion, the depth of the second groove portion remains unchanged; Among them, along the direction from the first groove portion to the third groove portion, the depth of the third groove portion gradually decreases from the junction of the second groove portion and the third groove portion, and along the direction from the first groove portion to the third groove portion, the depth of the end of the junction of the third groove portion and the second groove portion is equal to the depth of the second groove portion, and the height of the end of the third groove portion away from the second groove portion is equal to the height of the bottom of the receiving groove.

5. A method for forming a glass cover plate, characterized in that: The following steps are involved: Providing a molding die as claimed in any one of claims 1 to 4; placing a flat sheet of glass on the concave mold; Clamping the concave mold and the convex mold so that the flat glass is located between the concave mold and the convex mold; and The flat glass is subjected to a molding process to obtain a glass cover plate, wherein the glass cover plate has a boss with a height greater than 1 mm.

6. The method for forming a glass cover plate according to claim 5, wherein: The molding process comprises the following steps: Preheating the flat glass; forming the preheated flat glass; and The formed flat glass is cooled.

7. The method for forming a glass cover plate according to claim 6, wherein: When the preheated flat glass is molded, the temperature of the surface of the flat glass adjacent to the male mold is lower than the temperature of the surface of the flat glass adjacent to the female mold.

8. The method for forming a glass cover plate according to claim 6, wherein: When the flat glass is preheated, pressure is also applied to the flat glass in sections, and the applied pressure is gradually increased.

9. A glass cover plate prepared by the molding method according to any one of claims 5 to 8.

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