Laminating device, support film and laminating method

Abstract

The present application provides a laminating device, a support film and a laminating method. The laminating device includes: a pressing table, a profiling head and a clamp, the clamp is located between the pressing table and the profiling head and the clamp is used to clamp the first side of the support film and squeeze it with the profiling head to form a first screen curved portion on the first side of the flexible screen body that matches the first curved portion; wherein, the clamp is provided with a profiling portion, and when the clamp clamps the first side of the support film, the profiling portion is used to bend the second side of the flexible screen body to form a second screen curved portion on the second side of the flexible screen body that matches the second curved portion, and the first side and the second side extend in different directions. After using the clamp in the embodiment of the present application, a double-curved laminating device can be used to produce a four-curved display panel. Compared with a dedicated four-curved laminating device, no additional equipment investment is required, thereby greatly reducing the production cost of the four-curved display panel.

Description

Technical Field

[0001] The present application relates to the technical field of flexible screen laminating equipment, and in particular to a laminating device, a support film and a laminating method. Background Art

[0002] With the development of curved display technology, curved display panels are becoming increasingly popular. Curved display panels are typically manufactured by laminating a flexible screen to a curved cover plate using a laminating device. However, the production cost of existing laminating devices for laminating four-curved display panels is relatively high. Summary of the Invention

[0003] The present application provides a laminating device, a support film, and a laminating method. The following describes various aspects of the embodiments of the present application.

[0004] In the first aspect, a method is provided, comprising: a pressing table having a receiving groove for receiving a curved cover plate, the curved cover plate including a first curved portion and a second curved portion; a profiling press located on the opening side of the profiling press, the profiling press used to squeeze a flexible screen body to fit onto the curved cover plate, a support film being attached to a side of the flexible screen body away from the curved cover plate; a clamp located between the pressing table and the profiling press, the clamp used to clamp a first side edge of the support film and to press it with the profiling press head to form a first screen curved portion matching the first curved portion on the first side edge of the flexible screen body; wherein a profiling portion is provided on the clamp, and when the clamp clamps the first side edge of the support film, the profiling portion is used to bend the second side edge of the flexible screen body to form a second screen curved portion matching the second curved portion on the second side edge of the flexible screen body, and the first side edge and the second side edge extend in different directions.

[0005] In one possible implementation, the clamp includes a first clamping member and a second clamping member, the first clamping member and the second clamping member respectively include a first clamping surface and a second clamping surface, the profiling portion includes a recessed portion located on the first clamping surface and a raised portion located on the second clamping surface, and the recessed portion corresponds to the raised portion.

[0006] In a possible implementation, the length of the first side of the flexible screen is greater than the length of the second side of the flexible screen.

[0007] In one possible implementation, the recessed portion includes a bottom and a first curved portion connected to the bottom, and the raised portion includes a platform portion and a second curved portion connected to the platform portion, and the shapes of the first curved portion and the second curved portion are consistent with the shape of the second curved portion.

[0008] In one possible implementation, the first side of the support film includes a first sub-side and a second sub-side located on the symmetrical side of the support film, and the clamp includes a first clamp and a second clamp, and the first clamp and the second clamp are used to clamp the first sub-side of the support film and the second sub-side of the support film, respectively.

[0009] In a possible implementation, the pressing platform and the contour pressing head are both components of a hyperbolic laminating device.

[0010] In a second aspect, a support film is provided. The support film is applied to the bonding device as described in the first aspect, and at least one stress release portion is provided on at least one side of the support film.

[0011] In a possible implementation manner, the stress relief portion is located at a midpoint of at least one side of the support film.

[0012] In a possible implementation, the stress release portion is a notch; preferably, the notch is an arc-shaped notch.

[0013] In a third aspect, a bonding method is provided, which is applied to the bonding device as described in the first aspect, and the method includes: fixing a curved cover plate in a receiving groove of a pressing table, the curved cover plate including a first curved portion and a second curved portion; clamping a first side edge of a support film on a fixture, a flexible screen body being bonded to a side of the support film facing the pressing table; controlling the clamping force on the fixture so that the profiling portion on the fixture bends the second side edge of the flexible screen body to form a second screen body curved portion matching the second curved portion on the second side edge of the flexible screen body; controlling the fixture to clamp the first side edge of the support film and squeeze the profiling press head to form a first screen body curved portion matching the first curved portion on the first side edge of the flexible screen body; controlling the profiling press head to move toward the pressing table to bond the flexible screen body to the curved cover plate.

[0014] In the laminating device provided in the embodiments of the present application, the clamp is provided with a contoured portion. This contoured portion can bend the second side of the flexible screen when the clamp is clamped on the first side of the support film, with the first side and the second side extending in different directions. Using the clamp in the embodiments of the present application, a double-curved laminating device can be used to produce a four-curved display panel. Compared to a dedicated four-curved laminating device, this device does not require additional equipment investment, thus significantly reducing the production cost of four-curved display panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a bonding device provided in an embodiment of the present application.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the fixture and support membrane.

[0017] Figure 3 This is a schematic diagram of the structure of extruding a flexible screen onto a curved cover plate in an embodiment of the present application.

[0018] Figure 4 A schematic structural diagram of a support membrane provided in an embodiment of the present application.

[0019] Figure 5 A schematic structural diagram of another support membrane provided in an embodiment of the present application.

[0020] Figure 6 A schematic flow chart of a bonding method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present application, the present application is described in more detail below based on exemplary embodiments and in conjunction with the accompanying drawings. The same or similar reference numerals are used in the accompanying drawings to represent the same or similar modules. It should be understood that the accompanying drawings are merely illustrative and the scope of protection of the present application is not limited thereto.

[0022] With the development of flexible display technology, curved display panels are becoming increasingly popular. Curved display panels are typically manufactured by laminating a flexible screen to a curved cover plate using a laminating device. Currently, most common curved display panels are hyperbolic display panels, and accordingly, laminating devices are generally used to manufacture hyperbolic display panels. This type of laminating device can also be referred to as a hyperbolic laminating device. The current method for manufacturing hyperbolic display panels using a hyperbolic laminating device involves using a clamp to clamp and bend the symmetrical side of a support film attached to the flexible screen, thereby causing the symmetrical side of the flexible screen to bend as well.

[0023] However, with the development of technology, there is an urgent need for four-curved display panels. Correspondingly, there is also an urgent need for a bonding device for bonding four-curved display panels. One feasible implementation method is to directly use a hyperbolic bonding device to manufacture four-curved display panels. However, since the shape of the curved cover plate is four-curved, if the flat flexible screen body bonded to the support film is directly bonded to the curved cover plate, the first side and second side of the flexible screen body will respectively contact the curved edge of the curved cover plate in advance, which will cause many bonding bubbles to appear during the subsequent bonding process. In other words, the hyperbolic bonding device cannot handle the bonding of four-curved display panels.

[0024] Another feasible approach is to design and manufacture a dedicated four-curve lamination device to produce quad-curved display panels. However, this approach requires high production costs. For manufacturers that already produce dual-curved display panels, expanding production of quad-curved panels would require investing in a dedicated four-curved lamination device, which is very expensive.

[0025] In view of this, an embodiment of the present application proposes a bonding device, which is a bonding device formed by improving the clamp in the existing hyperbolic bonding device. The clamp is provided with a profiling portion, which can bend the second side of the flexible screen when the clamp clamps the first side of the support film, and the extension directions of the first side and the second side are different.

[0026] When the clamp of the present invention is used in an existing hyperbolic laminating device, the device can be used to produce a quad-curved display panel, thus becoming a quad-curved laminating device. Compared to a dedicated quad-curved laminating device, no additional equipment investment is required, thus significantly reducing the production cost of quad-curved display panels.

[0027] The following combination Figure 1-Figure 3 The laminating device 100 in the embodiment of the present application is described in detail. Figure 1 As shown, the laminating device 100 in the embodiment of the present application is used to laminate a curved display panel 200. The curved display panel 200 may include a curved cover plate 210 and a flexible screen body 220.

[0028] The curved cover plate 210 in the embodiment of the present application may refer to a curved cover plate on a four-curved display panel. Such a curved cover plate may include a flat portion 211 and four curved surface portions 212 located around the flat bottom. The four curved surface portions 212 include two first curved surface portions 2121 and two second curved surface portions ( Figure 1 The first curved portion 2121 is adjacent to the second curved portion, and the first curved portion 2121 corresponds to the first side 213 of the curved cover 210, and the second curved portion corresponds to the second side ( Figure 1 In addition, the two first side edges 213 are one symmetrical side of the curved cover plate, and the two second side edges are the other symmetrical side of the curved cover plate 210 ( Figure 1 not shown).

[0029] Flexible screen 220 may be an OLED flexible screen and may include a drive layer and a light-emitting layer. The drive layer may be a thin-film transistor drive layer, and the light-emitting layer may include an anode, an OLED light-emitting material layer, and a cathode. In some embodiments, flexible screen 220 may also include a protective film.

[0030] like Figure 2-Figure 3As shown, the flexible screen 220 is planar when unbent, and its shape is generally square. Therefore, the flexible screen 220 may include a first side 221 and a second side 222 extending in different directions. Preferably, the first side 221 and the second side 222 may be perpendicular to each other. There are two first sides 221 and two second sides. In some embodiments, the length of the first side 221 is greater than the length of the second side 222. Therefore, the first side 221 and the second side 222 may also be referred to as the long side and the short side, respectively.

[0031] The flexible screen 220 includes a contourable region corresponding to the curved portion of the curved cover plate 210. Specifically, the contourable region includes a first contourable region and a second contourable region. The first contourable region is the region including the first side 221 of the flexible screen 220 and located at the edge, while the second contourable region is the region including the second side 222 of the flexible screen 220 and located at the edge.

[0032] In the embodiment of the present application, before the flat flexible screen 220 is attached to the curved cover 210, the deformable area of ​​the flexible screen 220 needs to be bent by the clamp 130 described below, such as Figure 3 As shown, the shape of the bent flexible screen 220 can match the curved cover 210 , that is, the deformable area of ​​the bent flexible screen 220 is formed into the same shape as the curved portion of the curved cover 210 .

[0033] The laminating device 100 is used to laminate the curved cover plate 210 and the flexible screen body 220 , and during the laminating process, the support film 300 is laminated on the side of the flexible screen body 220 away from the curved cover plate.

[0034] like Figure 1-2 As shown, the area of ​​the support film 300 is generally larger than that of the flexible screen 220 and is also square in shape. The support film 300 also has a first side 301 and a second side 302. The first side 301 of the support film 300 corresponds to the first side 221 of the flexible screen 220, and the second side 302 of the support film 300 corresponds to the second side 222 of the flexible screen 220. Since the flexible screen 220 has two first sides 221 and two second sides 222, the support film 300 also has two first sides 301 and two second sides 302. The two first sides 301 of the support film 300 are symmetrical sides, and the two second sides 302 of the support film 300 are also symmetrical sides.

[0035] The difference is that the first side 301 and second side 302 of the support film 300 are respectively longer than the first side 221 and second side 222 of the flexible screen 220. When the flexible screen 220 is attached to the support film 300, the support film 300 has an area extending from the outer edge of the flexible screen 220. Specifically, the extended area can be the area extending from the first side 301 of the support film 300 to the first side 221 of the flexible screen 220. This extended area can be the area clamped by the clamp 130 described below.

[0036] See also Figure 1 The laminating device 100 may include a pressing platform 110 , a contour pressing head 120 and a clamp 130 .

[0037] The pressing platform 110 has a receiving groove 111 for receiving the curved cover plate 210. It should be noted that the pressing platform 110 in the embodiment of the present application can be a component of a hyperbolic laminating device.

[0038] The contoured press head 120 is located on the open side of the receiving groove 111. The contoured press head 120 includes two symmetrical curved portions 121 that match the shape of the first curved portion 2121 described above. The contoured press head is used to move the flexible screen 220 to the pressing platform 110 and press the flexible screen 220 onto the curved cover plate 210. In this embodiment of the present application, the contoured press head 120 may only include two symmetrical curved portions 121, meaning that the contoured press head 120 is a component of the hyperbolic laminating device.

[0039] The clamp 130 is located between the pressing table 110 and the profiling press head 120. The clamp 130 is used to clamp the first side 301 of the support film 300 and move it in the downward direction to be pressed by the profiling press head 120. The pressing forms a first screen curved surface 223 (such as the first curved surface 2121) on the first side 221 of the flexible screen 220. Figure 3 shown).

[0040] like Figure 2 As shown, the clamp 130 is provided with a contoured portion 131. When the clamp 130 clamps the first side 301 of the support film 300, the contoured portion 131 is used to bend the second side 222 of the flexible screen 220 to form a second screen curved surface portion 224 on the second side 222 of the flexible screen 220 that matches the second curved surface portion 2122. In the embodiment of the present application, the first sides 301, 221 and the second sides 302, 222 extend in different directions.

[0041] See Figure 2The clamp 130 includes a first clamping member 132 and a second clamping member 133. The first clamping member 132 is provided with a first clamping surface, and the second clamping member 133 is provided with a second clamping surface, and the first clamping surface and the second clamping surface are arranged in a face-to-face manner.

[0042] The contoured portion 131 may include a recessed portion 134 on the first clamping surface and a raised portion 135 on the second clamping surface. The recessed portion 134 and the raised portion 135 are located at corresponding positions, and the recessed portion 134 and the raised portion 135 can cooperate with each other to form the second side edge 222 of the flexible screen 220 at the corresponding position into a second screen curved surface portion 224 that matches the second curved surface portion 2122.

[0043] See Figure 2 The recessed portion 134 may include a bottom portion 1341 and a first curved portion 1342 connected to the bottom portion 1341. The raised portion 135 includes a platform portion 1351 and a second curved portion 1352 connected to the platform portion 1351. The shapes of the first curved portion 1342 and the second curved portion 1352 are consistent with the shape of the second curved portion of the curved cover 210, and the first curved portion 1342 and the second curved portion 1352 are respectively located in the areas corresponding to the second side 222 of the flexible screen 220 on the first clamping member 132 and the second clamping member 133.

[0044] When the clamp 130 is used to clamp the first side 301 of the support film 300, the first clamping member 132 is located on the surface of the support film 300 facing the flexible screen body 220 and the recessed portion 134 contacts the surface, and the second clamping member 133 is located on the surface of the support film 300 facing away from the flexible screen body 220 and the raised portion 135 contacts the surface.

[0045] The first clamping member 132 and the second clamping member 133 are disposed opposite each other and are used to cooperate with each other to clamp the first side 301 of the support film 300 and move it downward. At the same time, the first clamping member 132 and the second clamping member 133 can also cooperate with each other to bend the first side 221 of the flexible screen body 220 to form a first screen curved surface portion 223 on the first side 221 of the flexible screen body 220 that matches the first curved surface portion 2121. The embodiment of the present application does not specifically limit the bending form of the first side 221 of the flexible screen body 220 that the first clamping member 132 and the second clamping member 133 cooperate with each other to bend.

[0046] As an implementation method, the first clamping member 132 and the second clamping member 133 can apply bending force to the first side 301 of the clamped support film 300 to bend the first side 301 of the support film 300 while driving the first side 221 of the flexible screen 220 to bend.

[0047] As another implementation method, the first clamping member 132 and the second clamping member 133 can clamp the first side edge 301 of the support film 300 and move downward until it contacts the contoured platform 120. The downward force of the first clamping member 132 and the second clamping member 133 on the first side edge 301 of the support film 300 causes the first side edge 221 of the flexible screen body 220 and the two curved portions 121 on the contoured platform 120 to squeeze each other, thereby allowing the first side edge 221 of the flexible screen body 220 to bend into a shape consistent with the shape of the curved portion 121, thereby pre-bending the first side edge 221 of the flexible screen body 220.

[0048] At the same time, since the first clamping member 132 and the second clamping member 133 are respectively provided with corresponding recessed portions 134 and raised portions 135, and the first curved portion 1342 and the second curved portion 1352 are both provided in the areas of the first clamping member 132 and the second clamping member 133 corresponding to the second side edge 222 of the flexible screen 220, the recessed portions 134 and the raised portions 135 can be used to cooperate with each other to bend the second side edge 222 of the flexible screen 220, so as to form a second screen curved portion 224 on the second side edge 222 of the flexible screen 220 that matches the second curved portion 2122. Therefore, the second side edge 222 of the flexible screen 220 is pre-bent.

[0049] As previously described, the flexible screen 220 and the supporting film 300 each have two first sides (the first side 221 of the flexible screen 220 and the first side 301 of the supporting film 300), and these two first sides are symmetrical. Accordingly, the first side 301 of the supporting film 300 may include a first sub-side 301a and a second sub-side 301b located on the symmetrical side of the supporting film, and the first sub-side 301a and the second sub-side 301b are symmetrically arranged.

[0050] In view of this, if Figure 1 and Figure 2 As shown, the number of clamps 130 may include two, and these two clamps 130 may be respectively referred to as a first clamp 130a and a second clamp 130b. The first clamp 130a and the second clamp 130b are respectively used to clamp the first sub-side 301a of the support film 300 and the second sub-side 301b of the support film 300. Specifically, the first clamp 132 of the first clamp 130a and the second clamp 133 of the first clamp 130a can be used to clamp the first sub-side 301a area of ​​the support film 300 in cooperation with each other, while the first clamp 132 of the second clamp 130b and the second clamp 133 of the second clamp 130b can be used to clamp the second sub-side 301b area of ​​the support film 300 in cooperation with each other.

[0051] By implementing the embodiments of the present application, it is possible to manufacture a quad-curved display panel by replacing the fixture while still using the existing hyperbolic bonding device. This ensures the bonding quality of the quad-curved display panel while avoiding additional equipment investment, effectively reducing the production cost of the quad-curved display panel.

[0052] As mentioned above, when the laminating device is used to produce a quad-curved display panel, the clamp 130 needs to clamp the support film 300. In view of this, the embodiment of the present application corresponds to the above laminating device and also proposes a support film applied to the above laminating device.

[0053] Combine Figure 2 、 Figure 4 and Figure 5 As shown, the support film 300 includes a first side 301 and a second side 302. The length of the first side 301 can be longer than the length of the second side 302, so the first side 301 can be called a long side and the second side 302 can be called a short side. Since the clamp 130 may generate stress on the support film 300 due to the clamping force and the bending force in the process of clamping and bending the support film 300 (such as Figure 4 How to avoid stress from damaging the flexible screen 220 becomes a further problem that needs to be solved.

[0054] As a way to implement Figure 2 、 Figure 4 and Figure 5 As shown, at least one stress relief portion 303 may be provided on at least one side of the support film 300. The stress relief portion 303 is used to relieve stress on the support film 300 generated when the clamp 130 clamps the support film 300 or the contoured portion bends the second side 222 of the flexible screen 220, thereby preventing damage to the flexible screen 220 when bending the flexible screen 220.

[0055] The embodiment of the present application does not specifically limit the type and number of the side edges of the support film 300 on which the stress relief portion 303 is located. For example, at least one stress relief portion may be provided only on the first side edge 301 of the support film 300. Alternatively, Figure 2 As shown, at least one stress relief portion 303 may be provided only on the second side 302 of the support film 300. (It is understood that Figure 2 FIG. 3 schematically illustrates the structure when there is only one stress release portion 303 ).

[0056] Or, if Figure 4 and Figure 5As shown, a plurality of stress release portions 303 can be provided on the first side 301 and the second side 302 of the support film 300, and the plurality of stress release portions 303 can be evenly distributed on the first side 301 and the second side 302 to form a uniform hollow pattern. The stress release portion 303 can be understood as a notch for releasing stress. The embodiment of the present application does not specifically limit the shape of the stress release portion 303 formed as a notch. For example, the notch can be a notch of various shapes such as circular, semicircular, elliptical, polygonal, etc. Preferably, the shape of the notch can be as follows: Figure 2 The arc-shaped notch shown.

[0057] The embodiment of the present application does not specifically limit the position of the stress relief portion 303 on the side of the support film 300. As an implementation, the stress relief portion 303 can be located at an edge of the support film 300. Preferably, the stress relief portion 303 can be located at the midpoint of at least one side of the support film 300.

[0058] Combined with the above Figure 1-Figure 5 The device embodiments in the embodiments of the present application are described in detail. Figure 6 The method embodiment in the embodiments of the present application is described. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so for parts not described in detail, reference can be made to the previous device embodiment.

[0059] The present application also provides a bonding method, which is applied to the bonding device as described above. Figure 6 , the method includes steps S610 to S650.

[0060] In step S610 , a curved cover plate is fixed in a receiving groove of a pressing table, wherein the curved cover plate includes a first curved surface portion and a second curved surface portion.

[0061] In step S620 , a first side edge of the support film is clamped on a fixture, and a flexible screen is attached to a side of the support film facing the laminating platform.

[0062] In step S630, the clamping force on the clamp is controlled to cause the contoured portion on the clamp to bend the second side of the flexible screen, so as to form a second screen curved portion on the second side of the flexible screen that matches the second curved portion.

[0063] In step S640, the clamp is controlled to clamp the first side of the support film and press it with the profiling press head to form a first screen curved surface portion matching the first curved surface portion on the first side of the flexible screen.

[0064] In step S650, the contour pressing head is controlled to move toward the pressing platform to adhere the flexible screen to the curved cover.

[0065] By implementing the method in the embodiment of the present application, the production of a four-curved display panel can be achieved by replacing the clamp on the basis of continuing to use the existing double-curved bonding device. While ensuring the bonding quality of the four-curved display panel, it can also avoid additional equipment investment, effectively reducing the production cost of the four-curved display panel.

[0066] It should be noted that, in the embodiments of the present application, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0067] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or region, it may mean that it is directly on the other layer or region, or that other layers or regions are included between it and the other layer or region. Furthermore, if the component is turned over, the layer or region will be "below" or "beneath" the other layer or region.

[0068] It should be understood that the term "and / or" used in the embodiments of the present application is merely a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the embodiments of the present application generally indicates that the associated objects are in an "or" relationship.

[0069] In the embodiments of the present application, the term “electrically connected” may refer to a direct electrical connection between two components, or may refer to an electrical connection between two components via one or more other components.

[0070] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A laminating device, characterized in that: include: A pressing table having an accommodating groove for accommodating a curved cover plate, wherein the curved cover plate includes a first curved portion and a second curved portion; a contoured pressing head located at the opening side of the receiving groove, the contoured pressing head being used to press the flexible screen body to fit it onto the curved cover plate, and a support film being attached to a side of the flexible screen body away from the curved cover plate; a clamp located between the pressing platform and the profiling press head, the clamp being used to clamp the first side edge of the support film and press it against the profiling press head to form a first screen curved portion on the first side edge of the flexible screen body that matches the first curved portion; In which, the clamp is provided with a profiling portion, and when the clamp clamps the first side of the support film, the profiling portion is used to bend the second side of the flexible screen to form a second screen curved portion on the second side of the flexible screen that matches the second curved portion, and the first side and the second side extend in different directions.

2. The laminating device according to claim 1, characterized in that: The clamp includes a first clamping member and a second clamping member, the first clamping member and the second clamping member respectively include a first clamping surface and a second clamping surface, the profiling portion includes a recessed portion located on the first clamping surface and a raised portion located on the second clamping surface, the recessed portion corresponds to the raised portion.

3. The laminating device according to claim 1, wherein: The length of the first side of the flexible screen is greater than the length of the second side of the flexible screen.

4. The laminating device according to claim 2, characterized in that: The recessed portion includes a bottom and a first curved portion connected to the bottom, and the raised portion includes a platform portion and a second curved portion connected to the platform portion. The shapes of the first curved portion and the second curved portion are consistent with the shape of the second curved portion.

5. The laminating device according to claim 1, characterized in that: The first side of the support film includes a first sub-side and a second sub-side located on the symmetrical side of the support film, and the clamp includes a first clamp and a second clamp, and the first clamp and the second clamp are used to clamp the first sub-side of the support film and the second sub-side of the support film respectively.

6. The laminating device according to claim 1, characterized in that: The pressing platform and the contoured pressing head are both components of a hyperbolic laminating device.

7. A support film, used in the laminating device according to any one of claims 1 to 6, characterized in that: At least one stress relief portion is provided on at least one side of the support film.

8. The support membrane according to claim 7, characterized in that The stress relief portion is located at a midpoint of at least one side of the support film.

9. The support membrane according to claim 7, characterized in that The stress release portion is a notch.

10. The support membrane according to claim 9, characterized in that The notch is an arc-shaped notch.

11. A bonding method, said method being applied to the bonding device according to any one of claims 1 to 6, characterized in that: The method comprises: Fixing the curved cover plate in the receiving groove of the pressing table, wherein the curved cover plate includes a first curved portion and a second curved portion; Clamping a first side of the support film on a fixture, with a flexible screen body attached to a side of the support film facing the laminating platform; Controlling the clamping force on the clamp to cause the contoured portion on the clamp to bend the second side of the flexible screen, thereby forming a second screen curved portion on the second side of the flexible screen that matches the second curved portion; Controlling the clamp to clamp the first side of the support film and press the contoured pressing head to form a first screen curved portion matching the first curved portion on the first side of the flexible screen; The profiling press head is controlled to move toward the pressing platform to fit the flexible screen onto the curved cover plate.

Images