Screen pasting method, screen pasting jig and display screen

Abstract

The application relates to a screen bonding method, a screen bonding jig and a display screen. A screen bonding method comprises the following steps: bonding an OCA optical adhesive film and a FOG display module to obtain a semi-finished display module; obtaining a plurality of semi-finished display modules; bonding a CG cover plate and the plurality of semi-finished display modules respectively to obtain a display module. According to the screen bonding method, the OCA optical adhesive film is preferentially bonded on the surface of the FOG display module in a soft-to-hard manner, the FOG display module is mostly planar, and the size is much smaller than that of the CG cover plate, so that the investment cost of the corresponding soft-to-hard equipment is reduced. The CG cover plate and the plurality of semi-finished display modules are bonded respectively, that is, a split-screen bonding method is used, so that the stress of the curved screen multi-screen bending area can be reduced, and the risks of macula, light leakage and bubbles in the bending area are reduced. In addition, the split-screen bonding can reduce the dependence on the consistency of the CG cover plate.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to screen bonding methods, screen bonding fixtures and displays. Background Technology

[0002] With the continuous development of display technology, curved screen technology has also developed rapidly, and curved screens have gradually become one of the core components of many high-end electronic devices. The curved screen design can further compress the mid-frame, thereby visually reducing the thickness of the bezel and creating a borderless visual effect. In addition, the unique high-gloss reflection brought by the curved glass surface can make the phone look more premium.

[0003] In traditional curved dual-screen manufacturing, OCA (Optically Clear Adhesive) is first applied to the CG (Cover Glass) using a soft-on-hard method, and then the CG and FOG (Flexible Printed Circuit Board on Glass) are vacuum-bonded using a hard-on method. However, this hard-on bonding method for curved dual-screens means that stress cannot be released at the joints and bends of the curved screens, leading to yellow spots and light leakage in these areas, and a relatively high risk of air bubbles. Summary of the Invention

[0004] Based on this, a screen bonding method, a screen bonding fixture, and a display screen are provided to solve the problem that stress cannot be released at the junction of curved screens and the middle bend when bonding curved dual screens, which ultimately leads to yellow spots and light leakage at the corresponding positions, and the risk of generating bubbles is also relatively high.

[0005] An embodiment of the first aspect of this application provides a screen bonding method, including:

[0006] The OCA optical adhesive film is bonded to the FOG display module to obtain a semi-finished display module.

[0007] Several semi-finished display modules are obtained;

[0008] The curved CG cover plate is bonded to several of the aforementioned semi-finished display modules to obtain the display modules.

[0009] According to the screen bonding method of this application embodiment, the OCA optical adhesive film is preferentially bonded to the surface of the FOG display module using a soft-to-hard bonding method. The FOG display module is mostly planar and much smaller in size than the curved CG cover plate, thus reducing the equipment investment cost for soft-to-hard bonding. The curved CG cover plate is bonded to several of the aforementioned semi-finished display modules separately, i.e., a screen-by-screen bonding method is used. This reduces the stress in the bending areas of the multi-screen curved screen, reducing the risk of yellow spots, light leakage, and bubbles in the bending areas. In addition, it is difficult to achieve good consistency in the curved CG cover plate in traditional technologies, and the warpage tolerance is relatively large. Therefore, screen-by-screen bonding can reduce the dependence on the consistency of the curved CG cover plate.

[0010] In one embodiment, when there are two semi-finished display modules, the curved CG cover plate is respectively attached to the two semi-finished display modules to obtain a dual-screen display.

[0011] In one embodiment, the curved CG cover plate is sequentially bonded to the two semi-finished display modules.

[0012] In one embodiment, when the OCA optical adhesive film is bonded to the FOG display module, the OCA optical adhesive film is rolled and adhered to the surface of the FOG display module by rollers.

[0013] In one embodiment, the roller pressure is no greater than 0.15 MPa; and / or

[0014] The rolling speed of the roller is 80-100 mm / s.

[0015] An embodiment of the second aspect of this application provides a screen bonding fixture, comprising:

[0016] Base; and

[0017] The first positioning groove is disposed on the base and is used to place the OCA optical adhesive film and the FOG display module to bond together to obtain a semi-finished display module.

[0018] The second positioning groove is disposed on the base and is used to place the curved CG cover plate.

[0019] A support member is provided on the base. When a portion of the curved CG cover plate is attached to the semi-finished display module, the bottom surface of another portion of the curved CG cover plate abuts against the support member, and the support member provides support for the curved CG cover plate.

[0020] The aforementioned screen bonding fixture places the semi-finished display module, obtained by bonding the OCA optical adhesive film to the FOG display module, into the first positioning groove. The first positioning groove serves to store and limit the semi-finished display module. Then, the curved CG cover plate is placed into the second positioning groove. The second positioning groove serves to store and limit the curved CG cover plate and enables precise positioning of the curved CG cover plate and the semi-finished display module. The curved CG cover plate and the semi-finished display module are bonded separately. When one end of the curved CG cover plate is bonded to the semi-finished display module, the other end of the curved CG cover plate, which is a curved screen, will be raised because it is not being bonded. The support member supports the raised bottom of the curved CG cover plate, which can reduce the stress in the bending area of ​​the curved screen, reduce the risk of yellow spots, light leakage, and bubbles in the bending area, and reduce the dependence on the curved CG cover plate.

[0021] In one embodiment, the support member is configured as a flexible support ring, and the base is provided with a rolling groove, wherein the flexible support ring is able to roll within the rolling groove to change the distance between the flexible support ring and the first positioning groove.

[0022] In one embodiment, the base is provided with an elastic pin, which is used to abut against the bottom surface of the curved CG cover plate, so that the curved CG cover plate and the semi-finished display module are provided with a reserved gap before they are bonded together.

[0023] In one embodiment, there are two first positioning slots, which are arranged adjacent to each other.

[0024] An embodiment of the third aspect of this application provides a display screen comprising the display module fabricated using the screen bonding method described in the above embodiments.

[0025] The aforementioned display screen reduces the risk of yellow spots, light leakage, and bubbles in the bending area, thus improving the quality of the display screen product. Attached Figure Description

[0026] Figure 1 This is a flowchart illustrating a screen bonding method according to an embodiment of this application.

[0027] Figure 2 This is a schematic diagram of the structure of a screen bonding fixture according to an embodiment of this application.

[0028] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0029] Figure 4 This is a schematic diagram of a screen bonding fixture according to an embodiment of this application in use.

[0030] Figure 5This is a schematic diagram of the structure of a screen bonding fixture according to an embodiment of this application, in which the curved CG cover plate is placed in the second positioning groove.

[0031] Figure 6 This is a schematic diagram of the bottom structure of the base of a screen bonding fixture according to an embodiment of this application.

[0032] Figure label:

[0033] 1. Semi-finished display module;

[0034] 2. Curved CG cover plate;

[0035] 3. Base; 31. Clearance groove; 32. Handle groove; 33. Retrieval groove; 34. Placement groove;

[0036] 4. First positioning groove; 41. First rounded corner structure;

[0037] 5. Second positioning groove; 51. Second rounded corner structure;

[0038] 6. Support components;

[0039] 7. Flexible ejector pin. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0042] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0046] With the continuous development of display technology, curved screen technology has also developed rapidly, and curved screens have gradually become one of the core components of many high-end electronic devices. Traditional curved dual-screen displays mainly involve using corresponding fixtures to attach OCA optical adhesive film to the curved CG cover plate 2 in a soft-on-hard manner. The curved CG cover plate 2 and the FOG display module are then vacuum-bonded in a hard-on-hard manner. Because the curved CG cover plate 2 is curved, corresponding fixtures are needed to fix it in place before bonding.

[0047] The inventors have noticed that this bonding method has certain drawbacks: First, for irregularly shaped curved CG cover plates 2, separate tooling fixtures are required, which is costly; second, some curved CG cover plates 2 are quite large, and the traditional soft-on-hard bonding method requires larger equipment to accommodate them, which also results in relatively high investment costs; in addition, when the dual screens are bonded together using a hard-on-hard method with corresponding tooling fixtures, the stress at the junction of the curved screens and the bending points in the middle cannot be released, which ultimately increases the risk of yellow spots, light leakage, and bubbles appearing at the corresponding positions.

[0048] See Figure 1 , Figure 1 A flowchart illustrating a screen bonding method according to an embodiment of this application is shown. Some embodiments of this application propose a screen bonding method including the following steps:

[0049] Step S100: Bond the OCA optical adhesive film to the FOG display module to obtain the semi-finished display module 1;

[0050] Step S200: Obtain several semi-finished display modules 1;

[0051] In step S300, the curved CG cover plate 2 is bonded to several semi-finished display modules 1 to obtain the display module.

[0052] According to the screen bonding method of this application embodiment, the OCA optical adhesive film is preferentially bonded to the surface of the FOG display module using a soft-on-hard method. The FOG display module is mostly planar and much smaller in size than the curved CG cover plate 2, thus reducing the equipment investment cost for soft-on-hard bonding. The curved CG cover plate 2 is bonded to several semi-finished display modules 1 separately, i.e., a screen-by-screen bonding method is used. This can reduce the stress in the bending area of ​​the multi-screen curved screen and reduce the risk of yellow spots, light leakage, and bubbles in the bending area. In addition, it is difficult to achieve good consistency of the curved CG cover plate 2 in traditional technology, and the warpage tolerance is relatively large. Therefore, screen-by-screen bonding can reduce the dependence on the consistency of the curved CG cover plate 2.

[0053] In some embodiments, when there are two semi-finished display modules 1, the curved CG cover plate 2 is bonded to each of the two semi-finished display modules 1 to obtain a dual-screen display. The dual-screen display obtained by this screen bonding method reduces the risk of yellow spots, light leakage, and bubbles in the bending area, thereby improving the product quality of the dual-screen display.

[0054] In some embodiments, the curved CG cover plate 2 is sequentially bonded to the two semi-finished display modules 1. Since the dual-screen setup only requires the curved CG cover plate 2 to be bonded to the two semi-finished display modules 1, the sequential bonding method can further reduce the stress in the bending area and further reduce the risk of yellow spots, light leakage, and bubbles in the bending area.

[0055] In some embodiments, when bonding the OCA optical adhesive film to the FOG display module, rollers are used to press and adhere the OCA optical adhesive film onto the surface of the FOG display module. The rollers provide the roller pressure during bonding, making the bonding more stable and achieving a better bonding effect.

[0056] In some embodiments, the roller pressure is no greater than 0.15 MPa. In some embodiments, the roller speed is 80-100 mm / s. In the embodiments of this application, the roller pressure can be lower than the roller speed in conventional technology, and the roller speed can be higher than the roller speed in conventional technology, resulting in a more uniform, stable, and efficient bonding effect.

[0057] See Figure 2 and Figure 3 , Figure 2 A schematic diagram of the structure of a screen bonding fixture according to an embodiment of this application is shown. Figure 3 It shows Figure 2 A partially enlarged schematic diagram at point A. Some embodiments of this application propose a screen bonding fixture, including a base 3, a first positioning groove 4, a second positioning groove 5, and a support member 6. The first positioning groove 4 is disposed on the base 3 and is used to place an OCA optical adhesive film for bonding with a FOG display module to obtain a semi-finished display module 1. The second positioning groove 5 is disposed on the base 3 and is used to place a curved CG cover plate 2.

[0058] In some embodiments, a first rounded corner structure 41 is provided at the inner corner of the first positioning groove 4. The first rounded corner structure 41 prevents the semi-finished display module 1 from being damaged and broken during the process of being placed into the first positioning groove 4. A second rounded corner structure 51 is provided at the inner corner of the second positioning groove 5. The second rounded corner structure 51 prevents the curved CG cover plate 2 from being damaged and broken during the process of being placed into the second positioning groove 5.

[0059] In some embodiments, a clearance groove 31 is provided on the base plate. One end of the clearance groove 31 penetrates the side wall of the base plate, and the other end extends into the first positioning groove 4 and the second positioning groove 5. The clearance groove 31 communicates with the first positioning groove 4 and the second positioning groove 5. Some structures in the screen, such as sensors and open cells, involve FPC circuit boards. The clearance groove 31 avoids the position of the FPC circuit board, preventing the screen from being squeezed when placed in the fixture.

[0060] See Figure 4 and Figure 5 , Figure 4 A schematic diagram of a screen bonding fixture according to an embodiment of this application is shown in use. Figure 5 This diagram illustrates the structure of a screen bonding fixture according to an embodiment of this application, where the curved CG cover plate 2 is placed in the second positioning groove 5. A support member 6 is disposed on the base 3. When a portion of the curved CG cover plate 2 is bonded to the semi-finished display module 1, the bottom surface of another portion of the curved CG cover plate 2 abuts against the support member 6, providing support for the curved CG cover plate 2.

[0061] The aforementioned screen bonding fixture places the semi-finished display module 1, obtained by bonding the OCA optical adhesive film to the FOG display module, into the first positioning groove 4. The first positioning groove 4 serves to store and limit the semi-finished display module 1. Then, the curved CG cover plate 2 is placed into the second positioning groove 5. The second positioning groove 5 serves to store and limit the curved CG cover plate 2, and enables precise positioning of the curved CG cover plate 2 and the semi-finished display module 1. The curved CG cover plate 2 and the semi-finished display module 1 are bonded respectively. When one end of the curved CG cover plate 2 is bonded to the semi-finished display module 1, the other end of the curved CG cover plate 2, which is a curved screen, will be raised because it is not being bonded. The support member 6 supports the raised bottom of the curved CG cover plate 2, which can reduce the stress in the bending area of ​​the curved screen and reduce the risk of yellow spots, light leakage, and bubbles in the bending area. The support member 6 can alleviate the bonding warping stress problem caused by the irregular shape and poor consistency of the curved CG cover plate 2.

[0062] In some embodiments, two first positioning slots 4 are provided, arranged adjacent to each other. The screen bonding fixture, including the two first positioning slots 4, provides an area for placing and positioning two semi-finished display modules 1, suitable for the production of dual-screen displays. It is understood that different numbers and positions of the first positioning slots 4 can be designed and used according to specific manufacturing requirements. In some embodiments, two corresponding second positioning slots 5 are also provided.

[0063] In some embodiments, the support member 6 is configured as a flexible support ring. The flexible support ring has a hollow structure, making the screen bonding fixture lightweight. Furthermore, the flexible configuration ensures that when the support member 6 contacts the curved CG cover plate 2 to provide support, the contact between the support member 6 and the curved CG cover plate 2 is line contact, reducing wear on the curved CG cover plate 2 caused by the support member 6. The flexible support ring can be made of materials such as silicone.

[0064] The base 3 is provided with a rolling groove, within which the support member 6 can roll to change the distance between the support member 6 and the first positioning groove 4. The rolling groove has a certain limiting effect on the support member 6, limiting the two end faces of the support member 6. When different models of curved CG cover plates 2 are used with this screen bonding fixture, the support member 6 rolls within the rolling groove, changing its position to accommodate irregularly shaped curved CG cover plates 2 with different bending angles, providing support for different curved CG cover plates 2. It is understandable that, in order to provide support for irregularly shaped curved CG cover plates 2 with different bending angles, the support member 6 can also be equipped with a lifting structure to maintain contact with the bottom of the curved CG cover plate 2.

[0065] In some embodiments, the rolling groove is configured as a first positioning groove 4, that is, the flexible support ring can roll in the first limiting groove, and the end face of the flexible support ring abuts against the inner wall of the first limiting groove, making the structure of the screen bonding fixture more compact and ingenious.

[0066] It can be understood that the support member 6 can be set as one or more, as long as it can support the raised part of the curved CG cover plate 2.

[0067] In some embodiments, see Figure 3 The base 3 is provided with an elastic pin 7, which is used to abut against the bottom surface of the curved CG cover plate 2, so that the curved CG cover plate 2 and the semi-finished display module 1 are provided with a reserved gap before bonding.

[0068] Specifically, in some embodiments, multiple elastic ejector pins 7 are provided, relatively evenly distributed around the periphery of the first positioning groove 4. A placement groove 34 is provided on the base plate to accommodate the elastic ejector pins 7 and provide a certain limit for the elastic ejector pins 7. The elastic ejector pins 7 can elastically deform in the vertical direction and can be configured as springs or other structures. After the semi-finished display module 1 is placed in the first positioning groove 4, the elastic ejector pins 7 surround the edge of the semi-finished display module 1, and then the curved CG cover plate 2 is placed in the second positioning groove 5. The elastic ejector pins 7 provide support for the bottom of the curved CG cover plate 2, so that there is a reserved gap between the curved CG cover plate 2 and the semi-finished display module 1 at this time, and they cannot be attached temporarily, avoiding priority contact between the curved CG cover plate 2 and the semi-finished display module 1 before vacuum bonding. The operator sends the screen bonding fixture with the curved CG cover plate 2 and the semi-finished display module 1 installed together to the bonding machine for vacuum pressing. Under the action of vacuum suction, the curved CG cover plate 2 overcomes the elastic force of the elastic pin 7 and gradually approaches the semi-finished display module 1. During the process, the reserved gap is reduced until the curved CG cover plate 2 and the semi-finished display module 1 are bonded together, thereby improving the bonding quality.

[0069] See Figure 6 , Figure 6 This diagram illustrates the bottom structure of the base 3, which is part of a screen bonding fixture according to an embodiment of this application. In some embodiments, to facilitate the removal of the screen bonding fixture, a removal groove 33 is provided at the bottom edge of the base 3, and handle grooves 32 are provided at both ends of the base 3. Figure 3 The handle groove 32 extends to the upper surface of the base 3 and communicates with the first positioning groove 4 and the second positioning groove 5, making it convenient for operators to take the semi-finished display module 1 in the first positioning groove 4 and the curved CG cover plate 2 in the second positioning groove.

[0070] When using the screen bonding fixture in the above embodiments, the following steps are included:

[0071] The OCA optical adhesive film is applied to the surface of one FOG display module of the dual-screen display using rollers. The parameters are controlled as follows: roller pressure 0.1-0.15Mpa, roller speed 80-100mm / s, to obtain a semi-finished display module 1.

[0072] Meanwhile, an OCA optical adhesive film is attached to the surface of another FOG display module of the dual-screen unit using rollers. The control parameters are: roller pressure 0.1-0.15Mpa, roller speed 80-100mm / s, to obtain another semi-finished display module 1.

[0073] A semi-finished display module 1 is placed in the first positioning groove 4 of the screen bonding fixture. The area to be bonded of the curved CG cover plate 2 is placed in the second positioning groove 5. The curved CG cover plate 2 is placed above the semi-finished display module 1. The unbonded area of ​​the curved CG cover plate 2 is placed on the flexible support ring. Bonding parameters are controlled as follows: pressure 0.01-0.1Mpa, vacuum degree ≤-99.0KPA, and pressing time 5-20s.

[0074] Place another semi-finished display module 1 in another first positioning groove 4, place the area to be bonded of the curved CG cover plate 2 above the semi-finished display module 1, and place the bonded area of ​​the curved CG cover plate 2 on the flexible support ring. Bonding parameters are controlled as follows: pressure 0.01-0.1Mpa, vacuum degree ≤-99.0KPA, and pressing time 5-20s.

[0075] After obtaining the dual-screen, place the product in a high-pressure defoamer to remove bubbles after bonding. Defoaming parameters: recommended pressure 0.1-0.5Mpa, temperature 25-50℃, time 10-50min. Specific parameters are defined according to the material system and bonding conditions.

[0076] Some embodiments of this application provide a display screen comprising a display module fabricated using the screen bonding method described in the above embodiments.

[0077] The aforementioned display screen reduces the risk of yellow spots, light leakage, and bubbles in the bending area, thus improving the quality of the display screen product.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0079] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A screen bonding method, characterized in that, include: The OCA optical adhesive film is bonded to the FOG display module to obtain a semi-finished display module. Several semi-finished display modules are obtained; A screen bonding fixture is provided, on which a curved CG cover plate and several semi-finished display modules are respectively bonded to obtain display modules. The screen bonding fixture includes a base, a first positioning groove, a second positioning groove, and a support member. The first positioning groove is disposed on the base and is used to place an OCA optical adhesive film and bond it to the FOG display module to obtain a semi-finished display module. The second positioning groove is disposed on the base and is used to place the curved CG cover plate. The inner wall corner of the second positioning groove is provided with a second rounded corner structure to prevent the curved CG cover plate from being placed into the second positioning groove. During the process within the groove, the surface may be damaged, causing breakage. The support member is mounted on the base. When part of the curved CG cover plate is attached to the semi-finished display module, the bottom surface of another part of the curved CG cover plate abuts against the support member, which provides support for the curved CG cover plate. The support member is configured as a flexible support ring. The base is provided with a rolling groove, and the flexible support ring can roll within the rolling groove to change the distance between the flexible support ring and the first positioning groove, so as to accommodate irregularly shaped curved CG cover plates with different bending angles and provide support for different curved CG cover plates. The rolling groove is configured as the first positioning groove.

2. The screen bonding method according to claim 1, characterized in that, When there are two semi-finished display modules, the curved CG cover plate is attached to the two semi-finished display modules respectively to obtain a dual-screen display.

3. The screen bonding method according to claim 2, characterized in that, The curved CG cover plate is sequentially bonded to the two semi-finished display modules.

4. The screen bonding method according to claim 1, characterized in that, When bonding the OCA optical adhesive film to the FOG display module, the OCA optical adhesive film is rolled and adhered to the surface of the FOG display module by rollers.

5. The screen bonding method according to claim 4, characterized in that, The roller pressure is not greater than 0.15 MPa; and / or The rolling speed of the roller is 80-100 mm / s.

6. A screen bonding fixture, characterized in that, include: Base; as well as The first positioning groove is disposed on the base and is used to place the OCA optical adhesive film and the FOG display module to bond together to obtain a semi-finished display module. The second positioning groove is disposed on the base and is used to place the curved CG cover plate. The inner wall corner of the second positioning groove is provided with a second rounded corner structure to prevent the curved CG cover plate from being damaged or broken during the process of being placed into the second positioning groove. A support member is provided on the base. When a portion of the curved CG cover plate is attached to the semi-finished display module, the bottom surface of another portion of the curved CG cover plate abuts against the support member. The support member provides support for the curved CG cover plate. The support member is configured as a flexible support ring, and the base is provided with a rolling groove. The flexible support ring can roll in the rolling groove to change the distance between the flexible support ring and the first positioning groove, so as to provide support for the irregular curved CG cover plates with different bending angles; the rolling groove is configured as the first positioning groove.

7. The screen bonding fixture according to claim 6, characterized in that, The base is provided with an elastic pin, which is used to abut against the bottom surface of the curved CG cover plate, so that the curved CG cover plate and the semi-finished display module are provided with a reserved gap before they are bonded together.

8. The screen bonding fixture according to claim 6, characterized in that, There are two first positioning slots, which are arranged adjacent to each other.

9. The screen bonding fixture according to claim 8, characterized in that, There are two second positioning slots corresponding to the first positioning slot.

10. A display screen, characterized in that, The display screen includes the display module manufactured using the screen bonding method as described in any one of claims 1-5.

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