Manufacturing method of curved display module, curved display module and curved display screen

Abstract

This application proposes a method for manufacturing a curved display module, a curved display module, and a curved display screen. The method includes: bending an initial glass cover plate according to a target shape using hot bending technology to obtain a preheated curved glass cover plate, wherein the preheated curved glass cover plate is composed of at least two connected flat glass cover plates; bonding the preheated curved glass cover plate with a flat touch screen and a flat display module using a flat cover plate forming process to obtain a bonded glass cover plate touch display module; and bonding the glass cover plate touch display module to a bending base using cold bending technology. Specifically, for any two adjacent flat glass cover plates in the preheated curved glass cover plate, the first angle formed by the bending base is smaller than the second angle formed by the two adjacent flat glass cover plates. This application solves the problems of difficult operation and low yield in hot bending technology, and also solves the problem of stress rebound in cold bending technology.

Description

Technical Field

[0001] This application relates to the field of display screen technology, and in particular to a method for manufacturing a curved display module, the curved display module, and a curved display screen. Background Technology

[0002] With the development of automotive intelligence, the application of in-vehicle displays is increasing. Multi-screen designs, such as dual-screen and triple-screen displays, are emerging. Furthermore, due to the need for a unified automotive interior, multi-screen designs are gradually shifting from planar arrangements to curved surface arrangements. Current curved surface shapes include V-shaped, Z-shaped, and U-shaped structures. There are currently two main manufacturing methods for in-vehicle curved display modules:

[0003] One method is cold bending technology. Cold bending technology means that the glass cover of the touch display module is a flat structure before the module is assembled. After the touch screen and display module are bonded and assembled, it is still a flat structure. Finally, the flat touch display module is fixed on a curved base, and the shape of the curved base is used to fix the touch display module cover to form a curved surface.

[0004] One method is hot bending technology. Hot bending technology involves first bending the cover plate of the touch display module at high temperature to form a curved cover plate, then attaching the curved cover plate to the touch screen and display module, and finally fixing it to a base with the same curved structure.

[0005] Both manufacturing methods have their advantages and disadvantages. Cold bending technology has a simple production process, but it suffers from high stress after assembling the base, which can lead to rebound problems. Hot bending technology avoids stress rebound problems because the glass cover is formed first, but it is difficult to process, has low efficiency, low yield, and high cost because the polishing of the cover surface, the printing of cover ink, and the bonding of the touch screen and display module are all completed under the curved cover structure. Summary of the Invention

[0006] This application provides a method for manufacturing a curved display module, a curved display module, and a curved display screen. Its main purpose is to reduce the stress rebound problem in cold bending technology and the problems of high process difficulty, low yield, and high cost in hot bending technology.

[0007] In a first aspect, embodiments of this application provide a method for manufacturing a curved display module, including:

[0008] A preheated bent glass cover plate is obtained by bending an initial glass cover plate into a target shape using hot bending technology. The preheated bent glass cover plate is composed of at least two flat glass cover plates connected together.

[0009] By using a planar cover plate manufacturing process, the preheated bent glass cover plate is bonded to a planar touch screen and a planar display module to obtain a bonded glass cover plate touch display module.

[0010] The glass cover touch display module is bonded to the curved base using cold bending technology. For any two adjacent planar glass covers in the preheated curved glass cover, the first angle formed by the curved base is smaller than the second angle formed by the two adjacent planar glass covers.

[0011] Furthermore, the second angle formed by any two adjacent planar glass cover plates is greater than a preset angle.

[0012] Furthermore, the preset angle is 160 degrees.

[0013] Furthermore, the step of attaching the glass cover touch display module to the curved base using cold bending technology includes:

[0014] Adhesive is applied to the curved base;

[0015] Place the glass cover touch display module onto the curved base;

[0016] The glass cover touch display module is bent again using cold bending technology so that it fits snugly against the bent base.

[0017] Furthermore, the preheated bent glass cover plate is bonded to the flat touch screen and the flat display module through the flat cover plate manufacturing process to obtain the bonded glass cover plate touch display module, including:

[0018] The flat touch screen is attached to the flat glass cover of the preheated bent glass cover through a flat cover plate manufacturing process.

[0019] The flat display module is attached to the flat touch screen on the flat glass cover through a flat cover plate manufacturing process.

[0020] Furthermore, the process of attaching the flat touchscreen to the flat glass cover plate of the preheated curved glass cover plate through the flat cover plate manufacturing process includes:

[0021] Optical adhesive is attached to one side of the flat touchscreen.

[0022] The flat touchscreen with the optical adhesive applied and the preheated curved glass cover are placed into the touchscreen bonding fixture for bonding.

[0023] Furthermore, the process of fabricating a planar cover plate, in which the planar display module is bonded to the planar touchscreen of the planar glass cover plate, includes:

[0024] Optical adhesive is attached to the other side of the flat touchscreen.

[0025] The flat panel display module is placed into the touch module bonding fixture for bonding to obtain the glass cover touch display module.

[0026] Further, the process of bending the initial glass cover plate according to the target shape using hot bending technology to obtain a preheated bent glass cover plate includes:

[0027] The initial glass cover is placed into the graphene mold of the target shape, and the graphene mold is placed into the hot bending processing equipment;

[0028] The graphene mold is first heated and then cooled using the hot bending equipment to obtain the preheated bent glass cover.

[0029] Secondly, embodiments of this application provide a curved display module, which is manufactured using the method for manufacturing a curved display module as described in any one of claims 1 to 8.

[0030] Thirdly, embodiments of this application provide a curved display screen, which includes a curved display module as provided in the second aspect.

[0031] This application proposes a method for manufacturing a curved display module. First, an initial glass cover plate is bent to a target shape using hot bending technology to obtain a preheated curved glass cover plate with a certain angle. Since this preheated curved glass cover plate is composed of at least two flat glass cover plates, when bonding it to a flat touchscreen or flat display module, a flat cover plate manufacturing process is used to bond it to a flat structure, rather than bonding it to a curved structure as in traditional hot bending technology. Therefore, this application can solve the problems of high process difficulty, low efficiency, low yield, and high cost in traditional hot bending technology. Then, a second angle is formed using cold bending technology. The glass cover touch display module is attached to the curved base. Since the glass cover touch display module itself has a certain angle, when attaching the glass cover touch display module to the curved base, it is only necessary to bend the glass cover touch display module to a second angle again through cold bending technology, that is, the glass cover touch display module is bent from the second angle to the first angle. In the traditional cold bending technology, the glass cover touch display module is bent from a plane to the second angle. In this embodiment, the degree of bending in the cold bending technology is small, and there will be no stress rebound phenomenon. Therefore, this embodiment solves the stress rebound problem in the traditional cold bending technology. Attached Figure Description

[0032] Figure 1 A flowchart illustrating a method for manufacturing a curved surface display module provided in this application embodiment;

[0033] Figure 2 This is a schematic diagram of the shape of the V-shaped preheated bend glass cover plate in the embodiments of this application;

[0034] Figure 3 This is a schematic diagram of the shape of the Z-shaped preheated bend glass cover plate in the embodiments of this application;

[0035] Figure 4 This is a schematic diagram of the shape of the V-shaped curved base in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the shape of the Z-shaped curved base in an embodiment of this application;

[0037] Figure 6 This is a schematic diagram of the structure of a V-shaped curved surface display module provided in an embodiment of this application;

[0038] Figure 7 This is a schematic diagram of the structure of a Z-shaped curved surface display module provided in an embodiment of this application.

[0039] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0040] Figure label:

[0041] Detailed Implementation

[0042] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0045] In the embodiments of this application, "at least two" refers to two or more; "more" refers to two or more. In the description of this application, terms such as "first," "second," and "third" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "more" means two or more, unless otherwise explicitly specified.

[0046] References such as “one embodiment” or “some embodiments” as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the terms “comprising,” “including,” “having,” and variations thereof, as used in this specification, mean “including, but not limited to,” unless otherwise specifically emphasized.

[0047] Figure 1 A flowchart illustrating a method for manufacturing a curved display module provided in this application embodiment is shown below. Figure 1 As shown, the method includes:

[0048] S110, the initial glass cover plate is bent into the target shape by hot bending technology to obtain a preheated bent glass cover plate 110, which is composed of at least two flat glass cover plates 111 connected together.

[0049] First, the various components required for the curved display module are provided, including an initial glass cover, a flat touch screen 120, a flat display module 130, and a bending base 140. The initial glass cover is a common flat glass cover 111, which can be rectangular, trapezoidal, etc. The initial glass cover is bent according to the target shape using hot bending technology to obtain a preheated bent glass cover 110 with a certain bending angle.

[0050] The target shape is the shape presented by the final curved surface display module. In this embodiment, the target shape can be V-shaped, Z-shaped, W-shaped, etc., that is, the preheated curved glass cover plate 110 obtained by bending according to the target shape is a curved surface structure with a certain angle. The preheated curved glass cover plate 110 can be regarded as being composed of at least two flat glass cover plates 111. The number of flat glass cover plates 111 can be determined according to the actual situation, and this embodiment does not make a specific limitation on this.

[0051] For example, Figure 2This is a schematic diagram of the shape of the V-shaped preheated curved glass cover plate 110 in an embodiment of this application, as shown below. Figure 2 As shown, when the target shape is V-shaped, the preheated curved glass cover plate 110 is also V-shaped. At this time, the preheated curved glass cover plate 110 can be regarded as being composed of two flat glass cover plates 111. Figure 3 This is a schematic diagram of the shape of the Z-shaped preheated curved glass cover plate 110 in an embodiment of this application, as shown below. Figure 3 As shown, when the target shape is Z-shaped, the preheated curved glass cover plate 110 is also Z-shaped. At this time, the preheated curved glass cover plate 110 can be regarded as being composed of three flat glass cover plates 111.

[0052] It should be noted that hot bending technology refers to the process of heating the initial glass cover to a specified bending temperature and then bending the initial glass cover. The specified bending temperature is usually called the yield point of the glass cover.

[0053] S120, through the planar cover plate manufacturing process, the preheated bent glass cover plate 110 is bonded to the planar touch screen 120 and the planar display module 130 to obtain the bonded glass cover plate touch display module.

[0054] Then, through the flat cover plate manufacturing process, the preheated bent glass cover plate 110 is successively bonded to the flat touch screen 120 and the flat display module 130. Specifically, since the preheated bent glass cover plate 110 is composed of flat glass cover plates 111, when bonding with the flat touch screen 120 and the flat display module 130, the bonding can be performed on the flat glass cover plate 111 of the preheated bent glass cover plate 110, instead of on the curved surface structure in the traditional hot bending technology. Therefore, it can solve the problems of high process difficulty, low efficiency, low yield and high cost in the traditional hot bending technology.

[0055] S130, the glass cover touch display module is attached to the bending base 140 by cold bending technology, wherein, for any two adjacent planar glass covers 111 in the preheated bent glass cover 110, the first angle 150 formed by the bending base 140 is smaller than the second angle 160 formed by the two adjacent planar glass covers 111.

[0056] After the preheated curved glass cover plate 110 is bonded to the flat touch screen 120 and the flat display module 130, a glass cover plate touch display module is obtained. It is easy to understand that the angle formed by the glass cover plate touch display module is the same as the second angle 160 formed by the preheated curved glass cover plate 110. Therefore, the angle of the glass cover plate touch display module is greater than the first angle 150 formed by the curved base 140.

[0057] Since the glass cover touch display module itself has a certain angle, when the glass cover touch display module is attached to the bending base 140, it is only necessary to bend the glass cover touch display module to the second angle 160 again through cold bending technology. That is, the glass cover touch display module is bent from the second angle 160 to the first angle 150. In the traditional cold bending technology, the glass cover touch display module is bent from the plane to the second angle 160. In this embodiment, the degree of bending in the cold bending technology is small, and there will be no stress rebound phenomenon. Therefore, this embodiment solves the stress rebound problem in the traditional cold bending technology.

[0058] It should be noted that cold bending technology usually refers to using mechanical equipment to bend the glass cover touch display module in a cold state by means of mechanical force.

[0059] Figure 4 This is a schematic diagram of the shape of the V-shaped curved base 140 in the embodiments of this application, combined with... Figure 2 and Figure 4 It can be seen that when a V-shaped display module is required, its curved base 140 also presents a corresponding V-shape, and the first angle 150 formed by the curved base 140 is as follows: Figure 4 As shown, when the glass cover touch display module needs to be attached to the curved base 140, the glass cover touch display module is bent again by cold bending technology, so that the glass cover touch display module changes from the second angle 160 to the first angle 150, which can reduce the stress rebound problem.

[0060] Figure 5 This is a schematic diagram of the shape of the Z-shaped curved base 140 in the embodiments of this application, combined with... Figure 3 and Figure 5 It can be seen that when a Z-shaped display module is required, its curved base 140 also takes a corresponding Z-shape, and the first angle 150 formed by the curved base 140 is as follows: Figure 5As shown, when the glass cover touch display module needs to be bonded to the curved base 140, the glass cover touch display module is bent again using cold bending technology, so that the glass cover touch display module changes from the second angle 160° to the first angle 150°, which can reduce the stress rebound problem. The method for manufacturing a curved display module proposed in this application first bends the initial glass cover according to the target shape using hot bending technology to obtain a preheated curved glass cover 110 with a certain angle. Since the preheated curved glass cover 110 is composed of at least two flat glass cover plates 111, when bonding it with the flat touch screen 120 and the flat display module 130, a flat cover plate manufacturing process is used to bond it on a flat structure, instead of bonding it on a curved structure as in traditional hot bending technology. Therefore, this application can solve the problems of high process difficulty, low efficiency, low yield, and high cost in traditional hot bending technology; then, the second angle 160° is bent again using cold bending technology. The glass cover touch display module is attached to the curved base 140. Since the glass cover touch display module itself has a certain angle, when attaching the glass cover touch display module to the curved base 140, it is only necessary to bend the glass cover touch display module to the second angle 160 again through cold bending technology. That is, the glass cover touch display module is bent from the second angle 160 to the first angle 150. In the traditional cold bending technology, the glass cover touch display module is bent from the plane to the second angle 160. In this embodiment, the degree of bending in the cold bending technology is small, and there will be no stress rebound phenomenon. Therefore, this embodiment solves the stress rebound problem in the traditional cold bending technology.

[0061] In some embodiments, the second angle 160 formed by any two adjacent planar glass cover plates 111 is greater than a preset angle.

[0062] In this embodiment, the second angle 160° is greater than a preset angle. The size of the preset angle can be determined according to actual needs. Generally, the preset angle is an obtuse angle, and the selection of the preset angle meets the following requirements:

[0063] It is necessary to ensure that the hot-bent glass cover is close to a flat surface so that it can be bonded to the flat touch screen 120 and the flat display module 130 through the flat cover manufacturing process, while also preventing stress rebound when the glass cover touch display module is bonded to the bending base 140.

[0064] For example, the preset angle can be 140 degrees, 145 degrees, 150 degrees, 155 degrees, 160 degrees, etc., and can be determined according to the actual situation. This application embodiment does not make specific limitations on this.

[0065] As one implementation method, the preset angle is 160 degrees.

[0066] After multiple experiments, the preset angle was selected as 160 degrees. When the second angle 160 is greater than 160 degrees, it is most suitable for the flat cover plate manufacturing process, and the stress rebound phenomenon is minimized.

[0067] In some embodiments, step S110, which involves bending the initial glass cover plate according to a target shape using hot bending technology to obtain a preheated bent glass cover plate 110, includes:

[0068] S111, the initial glass cover is placed into the graphene mold of the target shape, and the graphene mold is placed into the hot bending processing equipment;

[0069] S112, the graphene mold is heated and then cooled by the hot bending processing equipment to obtain the preheated bent glass cover plate 110.

[0070] In the specific implementation process, the initial glass cover plate is first placed into the graphene mold designed according to the target shape, and then the graphene mold is placed into the hot bending processing equipment. The graphene mold is softened by the hot bending processing equipment and then attached to the mold. Subsequently, the graphene mold is gradually cooled and shaped by the hot bending processing equipment to form a preheated bent glass cover plate 110 with an angle greater than 160 degrees, such as V-shape or Z-shape.

[0071] Generally, the heating control curve is as follows: approximately 30 minutes from 0℃ to 300℃, approximately 25 minutes from 300℃ to 500℃, approximately 30 minutes from 500℃ to 700℃, with a holding time of 10-20 minutes. The cooling curve is as follows: cooling from 700℃ to 500℃ takes approximately 40 minutes, cooling from 500℃ to 300℃ takes approximately 30 minutes, and cooling from 300℃ to room temperature takes 50 minutes.

[0072] In some embodiments, in step S120, the preheated bent glass cover 110 is bonded to the flat touch screen 120 and the flat display module 130 through a flat cover plate manufacturing process to obtain a bonded glass cover touch display module, including:

[0073] S121, the flat touch screen 120 is attached to the flat glass cover 111 of the preheated curved glass cover 110 through the flat cover plate manufacturing process;

[0074] S122, through the planar cover plate manufacturing process, the planar display module 130 is attached to the planar touch screen 120 of the planar glass cover plate 111.

[0075] In this embodiment, the flat touch screen 120 is first attached to the flat glass cover plate 111 of the preheated curved glass cover plate 110 through a flat cover plate manufacturing process, and then the flat display module 130 is attached to the flat glass cover plate 111 on which the flat touch screen 120 has been attached.

[0076] In this embodiment, since the bonding with the flat touch screen 120 and the flat display module 130 is performed on the flat glass cover plate 111 of the preheated bent glass cover plate 110, rather than on the curved structure in the traditional hot bending technology, the problems of high process difficulty, low efficiency, low yield and high cost in the traditional hot bending technology can be solved.

[0077] In one implementation, step S121, which involves attaching the flat touchscreen 120 to the flat glass cover 111 of the preheated curved glass cover 110 through a flat cover plate manufacturing process, includes:

[0078] Optical adhesive 180 is attached to one side of the flat touch screen 120;

[0079] The flat touch screen 120 with the optical adhesive 180 applied and the preheated curved glass cover plate 110 are placed into the touch screen bonding fixture for bonding.

[0080] In the specific implementation process, after cleaning the flat touch screen 120, optical adhesive 180 is applied to the bonding surface of one side of the flat touch screen 120 by manual or machine operation. The flat touch screen 120 with the optical adhesive 180 applied is placed into the touch screen bonding fixture. Then, the preheated bent glass cover plate 110 is placed into the touch screen bonding fixture for bonding and alignment. After alignment, it is placed into the full bonding equipment for vacuum bonding operation.

[0081] The bonding pressure is 0.3-0.4 MPa, the temperature is 50-80℃, and the time is 180-240 seconds. After bonding, the product undergoes degassing, with a degassing pressure of 0.3-0.5 MPa, a temperature of 30-80℃, and a time of 15-30 minutes. After degassing, the product undergoes UV curing, with a UV curing condition of light intensity > 3000 mJ / cm².

[0082] In one implementation, step S122, where the planar display module 130 is attached to the planar touchscreen 120 of the planar glass cover plate 111 through the planar cover plate manufacturing process, includes:

[0083] Optical adhesive 180 is attached to the other side of the flat touch screen 120;

[0084] The flat panel display module 130 is placed into the touch module bonding fixture for bonding to obtain the glass cover touch display module.

[0085] In the specific implementation process, the device first undergoes UV inspection. Then, optical adhesive 180 is applied to the other side of the flat touch screen 120 by manual or machine operation. The tested flat display module 130 is first placed into the touch module bonding fixture, and then the product with the applied optical adhesive 180 is placed into the touch module bonding fixture. Finally, it is placed into the full bonding equipment for vacuum bonding operation.

[0086] The bonding pressure is 0.3-0.4 MPa, the temperature is 30-50℃, and the time is 150-200 seconds. After bonding, the product undergoes degassing, with a degassing pressure of 0.3-0.5 MPa, a temperature of 30-50℃, and a time of 15-30 minutes. After degassing, the product undergoes UV curing, with a UV curing condition of light volume > 2000 mJ / cm².

[0087] In some embodiments, step S130, which involves attaching the glass cover touch display module to the curved base 140 using cold bending technology, includes:

[0088] S131, adhesive 170 is attached to the curved base 140;

[0089] S132, Place the glass cover touch display module onto the curved base 140;

[0090] S133, the glass cover touch display module is bent again using cold bending technology so that the glass cover touch display module fits into the bent base 140.

[0091] In the specific implementation process, adhesive or spot adhesive is applied to the designed positions on the four sides of the bending base 140. Then, the glass cover touch display module is placed on the bending base 140 as required. Since the glass cover touch display module itself has a certain angle, when attaching the glass cover touch display module to the bending base 140, it is only necessary to bend the glass cover touch display module to the second angle 160 again through cold bending technology. That is, the glass cover touch display module is bent from the second angle 160 to the first angle 150. In the traditional cold bending technology, the glass cover touch display module is bent from the plane to the second angle 160. In this embodiment, the degree of bending in the cold bending technology is small, and there will be no stress rebound phenomenon. Therefore, this embodiment solves the stress rebound problem in the traditional cold bending technology.

[0092] This application also provides a curved surface display module, which is manufactured by the above-described curved surface display module manufacturing method.

[0093] Figure 6 This is a structural schematic diagram of a V-shaped curved surface display module provided in an embodiment of this application, combined with... Figure 2 , Figure 4 and Figure 6 The manufacturing process of this V-shaped curved surface display module can be seen. Figure 7 This is a schematic diagram of the structure of a Z-shaped curved surface display module provided in an embodiment of this application, as shown below. Figure 7 As shown, combined with Figure 3 , Figure 5 and Figure 7 The manufacturing process of this Z-shaped curved surface display module can be seen.

[0094] The specific manufacturing process of the curved display module in this embodiment is the same as that in the above embodiments. For details, please refer to the above embodiments. This embodiment will not be repeated here.

[0095] This application embodiment also provides a curved display screen, which includes the above-mentioned curved display module. The curved display screen can be a vehicle display screen or a computer display screen, which can be determined according to the actual situation. This embodiment will not elaborate further here.

[0096] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0097] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for manufacturing a curved surface display module, characterized in that, include: A preheated bent glass cover plate is obtained by bending an initial glass cover plate into a target shape using hot bending technology. The preheated bent glass cover plate is composed of at least two flat glass cover plates connected together. By using a planar cover plate manufacturing process, the preheated bent glass cover plate is bonded to a planar touch screen and a planar display module to obtain a bonded glass cover plate touch display module. The glass cover touch display module is attached to the curved base using cold bending technology. For any two adjacent planar glass covers in the preheated curved glass cover, the first angle formed by the curved base is smaller than the second angle formed by the two adjacent planar glass covers. The process of attaching the glass cover touch display module to the curved base using cold bending technology includes: Adhesive is applied to the curved base; Place the glass cover touch display module onto the curved base; The glass cover touch display module is bent again using cold bending technology so that it fits snugly against the bent base.

2. The method for manufacturing a curved surface display module according to claim 1, characterized in that, The second angle formed by any two adjacent planar glass cover plates is greater than a preset angle.

3. The method for manufacturing a curved surface display module according to claim 2, characterized in that, The preset angle is 160 degrees.

4. The method for manufacturing a curved surface display module according to claim 1, characterized in that, The process of bonding the preheated bent glass cover plate to the flat touch screen and flat display module through a flat cover plate manufacturing process results in a bonded glass cover plate touch display module, including: The flat touch screen is attached to the flat glass cover of the preheated bent glass cover through a flat cover plate manufacturing process. The flat display module is attached to the flat touch screen on the flat glass cover through a flat cover plate manufacturing process.

5. The method for manufacturing a curved surface display module according to claim 4, characterized in that, The process of attaching the flat touchscreen to the flat glass cover plate of the preheated bent glass cover plate through the flat cover plate manufacturing process includes: Optical adhesive is attached to one side of the flat touchscreen. The flat touchscreen with the optical adhesive applied and the preheated curved glass cover are placed into the touchscreen bonding fixture for bonding.

6. The method for manufacturing a curved surface display module according to claim 5, characterized in that, The process of manufacturing a flat cover plate, in which the flat display module is attached to the flat touch screen of the flat glass cover plate, includes: Optical adhesive is attached to the other side of the flat touchscreen. The flat panel display module is placed into the touch module bonding fixture for bonding to obtain the glass cover touch display module.

7. The method for manufacturing a curved surface display module according to claim 1, characterized in that, The process of bending an initial glass cover plate into a target shape using hot bending technology to obtain a preheated bent glass cover plate includes: The initial glass cover is placed into the graphene mold of the target shape, and the graphene mold is placed into the hot bending processing equipment; The graphene mold is first heated and then cooled using the hot bending equipment to obtain the preheated bent glass cover.

8. A curved surface display module, characterized in that, The curved display module is manufactured using the method for manufacturing a curved display module as described in any one of claims 1 to 7.

9. A curved display screen, characterized in that, Includes the curved surface display module as described in claim 8.

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