Laminating jig, laminating method and manufacturing method of display equipment

Abstract

The invention discloses an attaching jig, an attaching method and a manufacturing method of display equipment, the attaching jig comprises a jig body and an attaching channel layer, the attaching channel layer is attached to a supporting surface of the jig body, the attaching channel layer comprises a flexible wall and a hollow structure, and the flexible wall wraps the hollow structure; and as the fluid enters the hollow structure, the fluid in the hollow structure generates thrust on the layer, deviating from the supporting surface, of the flexible wall, so that the layer, deviating from the supporting surface, of the flexible wall is deformed. According to the fitting jig provided by the invention, the problem that the fitting yield is reduced due to the fact that bubbles generated in the fitting process cannot be discharged due to the fact that the end sides of the flexible display module and the cover plate are in contact in advance in the pressing process is solved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a bonding fixture, a bonding method, and a method for manufacturing a display device. Background Technology

[0002] Curved display devices have a beautiful curved appearance and a better viewing angle. The curved surface design conforms to the spherical characteristics of the human eye, which can eliminate the visual distortion at the edge of the flat surface and create a more natural and comfortable viewing experience. As the manufacturing technology of curved screens gradually matures, curved displays are widely used in televisions, computers, mobile phones and even some smart wearable devices, such as smartphones, monitors and smartwatches.

[0003] Currently, in the process of full lamination of curved screens, it is necessary to bond a planar flexible display module with a cover plate with a Gaussian curved surface. However, during the bonding process, air bubbles are easily generated between the flexible display module and the cover plate, causing bonding wrinkles and resulting in a low bonding yield. Summary of the Invention

[0004] This application discloses a bonding fixture, a bonding method, and a method for manufacturing a display device to solve the problem of low bonding yield.

[0005] In a first aspect, this application discloses a fitting fixture, including a fixture body and a fitting channel layer, wherein the fitting channel layer is attached to the support surface of the fixture body;

[0006] The bonding channel layer includes a flexible wall and a hollow structure, wherein the flexible wall covers the hollow structure;

[0007] As fluid enters the hollow structure, the fluid in the hollow structure exerts a thrust on the layer of the flexible wall that is away from the supporting surface, causing the layer of the flexible wall away from the supporting surface to deform.

[0008] Optionally, the flexible wall includes a first end and a second end disposed opposite to each other;

[0009] The first end is provided with an inlet, and the second end is provided with an outlet. The fluid flows into the hollow structure from the inlet and flows out of the hollow structure from the outlet.

[0010] Preferably, the fluid includes at least one of water and a colloidal liquid.

[0011] Optionally, the layer of the flexible wall furthest from the supporting surface is the first layer; the layer of the flexible wall closest to the supporting surface is the second layer.

[0012] The thickness of the first layer near the first end is less than the thickness of the first layer near the second end;

[0013] Preferably, the thickness of the first layer gradually increases in the direction extending from the first end to the second end;

[0014] Preferably, the first layer has a curved surface shape;

[0015] Preferably, the first layer has a spherical surface.

[0016] Preferably, the material of the first layer includes a flexible material;

[0017] Preferably, the material of the second layer includes a rigid material;

[0018] Preferably, the flexible material includes at least one of silicone and rubber.

[0019] Optionally, the bonding channel layer further includes multiple channel baffles located within the hollow structure and distributed sequentially at intervals in the direction extending from the first end to the second end, wherein the hollow structure is divided into multiple spaces by the multiple channel baffles.

[0020] Optionally, the channel baffle includes a first side fixed to the second layer away from the support surface, and a second side corresponding to the first side; the channel baffle is inclined, and the inclination direction of the channel baffle tends to the direction from the first end to the second end;

[0021] Preferably, the channel baffle includes a flexible baffle formed of a flexible material;

[0022] Preferably, when the channel baffle is not deformed, the second side of the channel baffle is in contact with the side of the first layer near the support surface;

[0023] Preferably, after the channel baffle is deformed, the second side of the channel baffle is not in contact with the side of the first layer near the support surface.

[0024] Optionally, the elastic modulus of the first layer located in the same space is less than the elastic modulus of the channel baffle.

[0025] Optionally, the elastic modulus of the first layer gradually increases along the direction extending from the first end to the second end;

[0026] Preferably, the thickness of the bonding channel layer gradually decreases along the direction extending from the first end to the second end;

[0027] Preferably, the size of the plurality of spaces gradually decreases along the direction extending from the first end to the second end.

[0028] Optionally, it may also include an adhesive layer located on the side of the bonding channel layer opposite to the support surface.

[0029] Secondly, this application discloses a bonding method, including:

[0030] A bonding fixture is provided to which a flexible display module is attached; the distance between the flexible display module and the curved cover plate is a preset distance; the bonding fixture includes a fixture body and a bonding channel layer, the bonding channel layer is attached to the support surface of the fixture body, and the flexible display module is attached to the side of the bonding channel away from the support surface; the bonding channel layer includes a flexible wall and a hollow structure, and the flexible wall covers the hollow structure;

[0031] Fluid is filled into the hollow structure of the bonding channel layer. As the fluid enters the hollow structure, the fluid in the hollow structure exerts a thrust on the side of the flexible wall away from the support surface, causing the flexible display module to be pushed to gradually fit into the curved cover plate.

[0032] Remove the fitting fixture.

[0033] Thirdly, this application discloses a method for manufacturing a display device, comprising: bonding a flexible display module and a curved cover plate using the bonding method described in the second aspect of this application.

[0034] The bonding fixture, bonding method, and manufacturing method of the display device provided in this application include a bonding fixture body and a bonding channel layer. The bonding channel layer is attached to the support surface of the fixture body and includes a flexible wall and a hollow structure, with the flexible wall covering the hollow structure. As fluid enters the hollow structure, the fluid in the hollow structure exerts a thrust on the layer of the flexible wall facing away from the support surface, causing deformation of this layer. Thus, during the bonding of the flexible display module and the cover plate, the layer of the flexible wall facing away from the support surface gradually deforms along the fluid flow direction, allowing the flexible display module to gradually bond with the cover plate as the deformation occurs. This ensures orderly bonding and avoids the problem of air bubbles forming in the central bonding area due to premature contact at the ends of the flexible display module and the cover plate during the bonding process, thereby improving the bonding yield. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0036] Figure 1 This is a schematic diagram of the structure of a fitting fixture, which is an example of this application.

[0037] Figures 2-4This application provides an exemplary schematic diagram of the process of bonding a flexible display module and a cover plate using a bonding fixture.

[0038] Figure 5 This is a schematic diagram of another fitting fixture as exemplarily shown in this application.

[0039] Figure 6 for Figure 5 A magnified view of area A in the middle.

[0040] Figures 7-9 This application provides an exemplary schematic diagram of the process of bonding a flexible display module and a cover plate using a bonding fixture.

[0041] Figure 10 The flowchart illustrates an example of a bonding method in this application. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. 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.

[0043] With technological advancements, flexible display devices are showing increasingly broad application prospects. The bendability of flexible display devices enables product diversification, achieving excellent display and aesthetic effects. To achieve a larger display area and novel display effects, display modules can be designed in bent shapes, such as U-shaped or spherical curved surfaces, with a cover plate of the same shape attached to the display surface to protect it. However, current technologies suffer from low success rates in perfectly fitting bent curved cover plates to bent curved display modules, easily resulting in defects such as air bubbles or inaccurate bonding positions, leading to low yield rates and high production costs.

[0044] As an optional implementation of the disclosure in this application, an embodiment of this application discloses a fitting fixture, such as... Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a bonding fixture disclosed in an embodiment of this application. The bonding fixture can be used to bond a flexible display module and a cover plate. Figures 2 to 4 This is a schematic diagram illustrating the process of bonding the flexible display module to the cover plate using this bonding fixture. The following is in conjunction with... Figures 1-4 The fitting fixture of this application is described in detail.

[0045] like Figure 1 , Figure 2 and Figure 3As shown, the bonding fixture 100 includes a fixture body 10 and a bonding channel layer 20. The fixture body 10 acts as a support, providing support during the bonding process between the flexible display module 200 and the cover plate 300. The flexible display module 200 is, for example, a curved screen display module, which has a curved surface when bent; exemplarily, the curved surface is a spherical surface. The support surface 101 of the fixture body 10 refers to the surface on the fixture body 10 used to support the flexible display module 200. Correspondingly, the support surface 101 of the fixture body 10 is also a spherical surface, so as to support the flexible display module 200 using the spherical support surface 101.

[0046] refer to Figure 1 The bonding channel layer 20 is attached to the support surface 101 of the fixture body 10. That is, the bending shape of the bonding channel layer 20 and the support surface 101 at the bonding point is the same. Similarly, the bending shape of the side of the cover plate 300 to be bonded is the same as the side of the flexible display module 200 to be bonded. (Reference) Figure 2 The side of the bonding channel layer 20 facing away from the support surface 101 is bonded to one side of the flexible display module 200, and the cover plate 300 is located on the other side of the flexible display module 200, with a preset distance between it and the flexible display module 200.

[0047] The preset distance refers to the fixed distance between the flexible display module 200 and the cover plate 300 when they are bonded together. Specifically, the preset distance can be set within the range of 50 to 300 μm.

[0048] For example, if the preset distance is 50μm, then during the bonding of the flexible display module 200 and the cover plate 300, the bonding fixture 100 moves the flexible display module 200. When the distance between the bonding surface of the flexible display module 200 and the bonding surface of the cover plate 300 reaches 50μm, the movement of the bonding fixture stops, so that the distance between the bonding surface of the flexible display module 200 and the bonding surface of the cover plate 300 remains at 50μm; or, the preset distance can also be 100μm, then when the distance between the bonding surface of the flexible display module 200 and the cover plate 300 reaches 50μm, the bonding fixture 100 moves the flexible display module 200. When the distance between the bonding surfaces of the cover plate 300 reaches 100μm, the bonding fixture 100 is stopped from moving so that the distance between the bonding surfaces of the flexible display module 200 and the cover plate 300 is maintained at 100μm; or, the preset distance can be 300μm, then when the distance between the bonding surfaces of the flexible display module 200 and the cover plate 300 reaches 300μm, the bonding fixture 100 is stopped from moving so that the distance between the bonding surfaces of the flexible display module 200 and the cover plate 300 is maintained at 50μm.

[0049] Setting the distance between the flexible display module 200 and the cover plate 300 to a preset distance can provide a structural basis for the orderly bonding between the flexible display module 200 and the cover plate 300 in the future.

[0050] refer to Figure 1 As shown, the bonding channel layer 20 includes a flexible wall 210 and a hollow structure 220. The flexible wall 210 covers the hollow structure 220, and the flexible wall 210 is also the sidewall of the hollow structure 220. The hollow structure 220 is used to introduce fluid and provide a flow channel for the fluid. As the fluid enters the hollow structure 220, the fluid in the hollow structure 220 exerts a thrust on the layer of the flexible wall 210 away from the support surface 101, causing the layer of the flexible wall 210 away from the support surface 101 to deform.

[0051] refer to Figure 1 and Figure 2 As shown, for ease of explanation, the layer of flexible wall 210 furthest from the support surface 101 is designated as the first layer 211, and the layer of flexible wall 210 closest to the support surface 101 is designated as the second layer 212. Between the first layer 211 and the second layer 212 is a hollow structure 220. After the fluid enters the hollow structure 220, the fluid inside the hollow structure 220 will exert a thrust on the first layer 211 in a direction away from the support surface 101, thereby causing the first layer 211 to deform in a direction away from the support surface 101 under the action of the thrust. Since the flexible display module 200 is attached to the side of the first layer 211 away from the support surface 101, the flexible display module 200 deforms in the direction of the cover plate 300 as the first layer 211 deforms. At the same time, since the distance between the flexible display module 200 and the cover plate 300 is a preset distance, the deformation will cause the deformed area of ​​the flexible display module 200 to gradually approach the cover plate 300 of the corresponding area, thereby causing the deformed area of ​​the flexible display module 200 to adhere to the cover plate 300 of the corresponding area.

[0052] The fluid gradually enters the hollow structure 220, and accordingly, the fluid gradually fills the hollow structure 220. Along the direction of fluid spread within the hollow structure 220, the deformation of the first layer 211 gradually spreads, thereby causing the flexible display module 200 and the cover plate 300 to gradually adhere to each other. This ensures the orderly adhesion process and avoids the problem of air bubbles forming in the center area of ​​the adhesion due to premature contact at the ends of the flexible display module 200 and the cover plate 300 during the adhesion process, which would otherwise be unable to escape, greatly improving the adhesion yield.

[0053] For example, the flexible display module 200 and the cover plate 300 can be bonded together by an adhesive (not shown in the figure).

[0054] For example, refer to Figure 1 and Figure 4In the process of bonding the flexible display module 200 and the cover plate 300, in order to prevent the bonding fixture 100 from separating from the flexible display module 200 and affecting the bonding effect, the bonding fixture 100 may also include an adhesive layer 30, which is located on the side of the bonding channel layer 20 away from the support surface 101.

[0055] The adhesive layer 30 is used to bond with the flexible display module 200 to fix the flexible display module 200.

[0056] For example, to further ensure orderly bonding between the flexible display module 200 and the cover plate 300 during the bonding process, such as... Figure 4 As shown, the flexible wall 210 may include a first end 221 and a second end 222 disposed opposite to each other.

[0057] The first end 221 is provided with an inlet, and the second end 222 is provided with an outlet. Fluid flows into the hollow structure 220 from the inlet and flows out of the hollow structure 220 from the outlet.

[0058] Correspondingly, the direction X from the first end 221 to the second end 222 is the direction of the spread / flow of the fluid within the hollow structure 220 after the fluid enters the hollow structure 220.

[0059] It should be understood that the first end 221 and the second end 222 are two oppositely disposed ends on the flexible wall 210, and the first end 221 and the second end 222 respectively correspond to the two ends of the flexible display module 200 in the curved extension direction. That is to say, the direction in which the first end 221 extends to the second end 222 is consistent with the curved extension direction of the flexible display module 200, and the first end 221 and the second end 222 respectively correspond to the two ends of the flexible display module 200 in the curved extension direction.

[0060] Thus, as the fluid enters the hollow structure 220 from the inlet, the first layer 211 first deforms at the first end 221. As the fluid continues to enter the hollow structure 220, the deformation on the first layer 211 spreads along the direction of fluid flow, thereby pushing the corresponding area of ​​the flexible display module 200 to gradually adhere to the cover plate 300 in sequence along the direction of fluid flow. After all areas on the first layer 211 have deformed, the flexible display module 200 is pushed to completely adhere to the cover plate 300.

[0061] For the first layer 211, the thickness varies, so the thrust required to deform it will also vary. In order to ensure the orderly bonding between the flexible display module 200 and the cover plate 300, for example, the thickness of the first layer 211 near the first end 221 is less than the thickness of the first layer 211 near the second end 222.

[0062] When the thickness of the first layer 211 near the first end 221 is less than the thickness of the first layer 211 near the second end 222, the area of ​​the first layer 211 near the first end 221 is more prone to deformation. Correspondingly, when the fluid enters the hollow structure 220 and exerts a thrust on the first layer 211 in a direction away from the support surface 101, it can be ensured that the area of ​​the first layer 211 near the first end 221 deforms first. That is, the area of ​​the flexible display module 200 corresponding to the first layer 211 near the first end 221 first adheres to the cover plate 300. As the fluid in the hollow structure 220 gradually increases, the thrust also gradually increases. Correspondingly, the deformation spreads from the area of ​​the first layer 211 near the first end 221 to the area of ​​the first layer 211 near the second end 222, thereby making the bonding orderly, avoiding the generation of air bubbles during the bonding process, and improving the bonding yield.

[0063] For example, in order to further ensure the orderly bonding between the flexible display module 200 and the cover plate 300, the direction of deformation propagation on the first layer 211 needs to be consistent with the direction X extending from the first end 221 to the second end 222.

[0064] Specifically, in order to ensure that the direction of deformation propagation on the first layer 211 is consistent with the direction X extending from the first end 221 to the second end 222, the thickness of the first layer 211 can be set to gradually increase along the direction X extending from the first end 221 to the second end 222.

[0065] Thus, as the thickness of the first layer 211 increases, the thrust required for deformation at the corresponding position of the first layer 211 gradually increases. As fluid continuously enters the hollow structure 220, the thrust exerted by the fluid inside the hollow structure 220 on the first layer 211 in the direction away from the support surface 101 continuously increases. The first layer 211 gradually deforms in the X direction from the first end 221 to the second end 222, ensuring that the flexible display module 200 gradually adheres to the cover plate in the direction from the first end 221 to the second end 222. This gradually discharges the gas between the flexible display module 200 and the cover plate 300, thereby avoiding the generation of bubbles or gaps between the flexible display module 200 and the cover plate 300, and improving the bonding quality and yield.

[0066] In practical applications, the shape of the first layer 211 can be consistent with the shape of the support surface 101.

[0067] For example, if the support surface 101 is curved, then the first layer 211 will also be curved, and the bonding fixture 100 can bond the curved flexible display module to the curved cover plate. As another example, if the support surface 101 is spherical, then the first layer 211 will also be spherical, and the bonding fixture 100 can bond the spherical flexible display module to the spherical cover plate.

[0068] For example, in order to ensure that the first layer 211 has good deformation distribution characteristics, the material of the first layer 211 can be a flexible material with good deformation, and the flexible material may include at least one of silicone and rubber.

[0069] For example, the material of the second layer 212 can be consistent with that of the first layer 211, that is, the flexible wall 210 can be an integrally formed flexible wall, and the material of the flexible wall 210 is a flexible material. In some other embodiments, the flexible wall 210 can also be split, wherein the material of the first layer 211 is a flexible material, and the material of the second layer 212 can be a rigid material, for example, the material of the second layer 212 can be a metal material.

[0070] For example, the fluid may include at least one of water and a gel-like liquid.

[0071] As an optional implementation of the disclosure in this application, an embodiment of this application discloses a fitting fixture, such as... Figure 5 As shown, Figure 5 This is a schematic diagram of a bonding fixture disclosed in an embodiment of this application. The bonding fixture is used to bond a flexible display module and a cover plate. Figures 7 to 8 This is a schematic diagram illustrating the process of bonding the flexible display module to the cover plate using this bonding fixture. The following is in conjunction with... Figures 5-8 The fitting fixture is described in detail.

[0072] The main difference between this fitting fixture and the fitting fixture provided in the above embodiments is that, with reference to Figure 5 As shown, the bonding channel layer 20 may also include multiple channel baffles 40, which are located within the hollow structure 220 and are distributed sequentially at intervals in the direction X extending from the first end 221 to the second end 222.

[0073] like Figure 5 As shown, multiple channel baffles 40 are distributed at intervals along the extension direction X of the hollow structure 220 within the hollow structure 220. The distance between two adjacent channel baffles 40 can be the same or different. Figure 5 and Figure 6 The hollow structure 220 is divided into multiple spaces by multiple channel baffles 40. For example, the multiple channel baffles 40 are sequentially a first channel baffle 401, a second channel baffle 402, a third channel baffle (not shown), etc., and the hollow structure 220 is sequentially divided into a first space 230, a second space 340, a third space (not shown), etc.

[0074] Fluid enters the hollow structure 220 from the inlet at the first end 221. As the fluid increases, it fills multiple spaces in the hollow structure 220. In each space filled with fluid, the fluid exerts a thrust on the corresponding space of the first layer 211, causing the first layer 211 to deform. As the fluid fills multiple spaces in sequence, the first layer 211 deforms in sequence, thus pushing the flexible display module 200 on the side of the first layer 211 away from the support surface 101 to adhere to the cover plate 300 in sequence along the direction of deformation. This ensures orderly adhesion and avoids the formation of air bubbles.

[0075] For example, to ensure that the fluid entering the hollow structure 220 can fill multiple spaces one by one, the channel baffle 40 can be inclined relative to the second layer. The channel baffle 40 may include a first side fixed to the second layer 212 away from the support surface 101, and a second side corresponding to the first side. The inclination direction of the channel baffle 40 tends towards the direction X from the first end 221 to the second end 222. In this way, the channel baffle 40 not only divides the space but also serves as a flow guide, ensuring that the fluid can sequentially fill multiple spaces in the hollow structure 220.

[0076] It should be understood that, in order to ensure that the fluid can fill multiple spaces in sequence, when the first side of the channel baffle is fixed to the second layer 212 away from the support surface 101, the second side of the channel baffle 40 only keeps in contact with the side of the first layer 211 near the support surface 101, but is not connected to the side of the first layer 211 near the support surface 101.

[0077] Therefore, the channel baffle 40 can be a rigid baffle or a soft baffle.

[0078] For example, when the channel baffle 40 is a rigid baffle, the fluid entering the hollow structure 220 first fills the space near the first end 221. After the space near the first end 221 is filled, the fluid is still being continuously injected into the space. At this time, the thrust on the area of ​​the first layer 211 corresponding to the space causes the area of ​​the first layer 211 corresponding to the space to deform. The deformation direction is away from the support surface 101. While the area of ​​the flexible display module 200 corresponding to the space is attached to the cover plate 300, a gap appears between the second side of the channel baffle 40 of the space and the first layer 211. The fluid in the space enters the next space through the gap. In this way, the fluid fills multiple spaces in sequence until all spaces are filled, thus completing the orderly attachment of the flexible display module and the cover plate.

[0079] For example, in order to better utilize fluid pressure to smoothly open the channel baffle 40 so as to fill the space one by one, the channel baffle 40 added within the fitting channel layer 20 may include a soft baffle, which may be formed of a flexible material.

[0080] When the channel baffle 40 does not deform, the second side of the channel baffle 40 is in contact with the side of the first layer 211 near the support surface 101.

[0081] Similarly, after the channel baffle 40 deforms, the second side of the channel baffle 40 is not in contact with the side of the first layer 211 near the support surface 101.

[0082] refer to Figures 5-8 Specifically, taking the first space 230 and the second space 240 as examples, the first space 230 is closer to the first end 221 than the second space 240. Therefore, the thickness of the first layer 211 in the first space 230 is less than the thickness of the first layer 211 in the second space 240. For ease of expression, the thickness of the first layer 211 in the first space 230 is denoted as the first thickness T1, and the thickness of the first layer 211 in the second space 240 is denoted as the second thickness T2, i.e., T1 < T2. When fluid is injected from the first end 221 of the hollow structure 220, the fluid flows in the direction X extending from the first end to the second end within the hollow structure 220, first entering the first space 230 to fill it. Since the first thickness T1 in the first space 230 is relatively thin, the pressure generated by the fluid in the first space 230 will cause deformation at this location, pushing the corresponding area of ​​the flexible display module 200 to adhere to the cover plate 300. As the fluid continues to be injected, the fluid pressure in the first space 230 increases further, which in turn pushes down the first channel baffle 401 between the first space 230 and the second space 240, allowing the fluid to continue filling the second space 240. This process is repeated to use the fluid pressure to push down the channel baffles 40 of adjacent spaces in turn, filling the subsequent spaces. This ensures that the bonding process between the flexible display module 200 and the cover plate 300 proceeds in an orderly manner, and gradually removes air bubbles between them as the bonding process progresses.

[0083] To ensure a tighter fit between the flexible display module 200 and the cover plate 300, thus improving the bonding effect, the fluid can be allowed to fully fill the previous space before opening the channel baffle 40 to fill the next space. Therefore, the elastic modulus of the first layer 211 located in the same space is less than the elastic modulus of the channel baffle 40.

[0084] It should be noted that the channel baffle 40 in the space refers to the channel baffle 40 in the space that is far away from the first end 221.

[0085] refer to Figure 6Continuing with the example of the first space 230 and the second space 240, for the first space 230, the elastic modulus of the first layer 211 in the first space 230 is less than the elastic modulus of the first channel baffle 401 forming the first space 230, so that the first channel baffle 401 can play a certain blocking role on the fluid in the first space 230, thereby increasing the pressure of the fluid in the first space 230, so that the flexible display module 200 and the cover plate 300 corresponding to the position of the first space 230 are more tightly attached. Similarly, for the second space 240, the elastic modulus of the first layer 211 in the second space 240 is less than the elastic modulus of the second channel baffle 402 forming the second space 240. In this way, after ensuring that the fluid in the second space 240 can make the flexible display module 200 and the cover plate 300 at the corresponding position of the first space 230 fit more tightly, the fluid can then enter the next space, and so on. This can make the flexible display module 200 and the cover plate 300 fit more tightly and avoid the problem of premature contact during the bonding process, thereby improving the bonding effect.

[0086] Furthermore, in order to ensure that the flexible display module 200 and the cover plate 300 are bonded in an orderly manner, the elastic modulus of the first layer 211 gradually increases along the direction X extending from the first end 221 to the second end 222.

[0087] Among them, the elastic modulus of the channel baffle 40 is greater than the maximum elastic modulus of the first layer 211.

[0088] Specifically, along the direction X extending from the first end 221 to the second end 222, the thickness of the bonding channel layer 20 gradually decreases.

[0089] like Figure 9 As shown, the thickness h1 of the bonding channel layer 20 near the first end 221 is greater than the thickness h2 of the bonding channel layer 20 near the second end 222.

[0090] Correspondingly, along the direction X extending from the first end 221 to the second end 222, the size of the multiple spaces gradually decreases.

[0091] This ensures orderly bonding, avoids premature contact during the bonding process, and reduces fluid usage, thereby improving bonding yield, reducing bonding time, and increasing bonding efficiency.

[0092] As an optional implementation of the disclosure in this application, an embodiment of this application discloses a bonding method. This method uses the bonding fixture provided in the above embodiments to bond the flexible display module and the cover plate, such as... Figure 10 As shown, Figure 10 This is a flowchart of a bonding method disclosed in an embodiment of this application. The following is in conjunction with... Figures 1-4 , Figure 10 This bonding method is explained in detail.

[0093] The bonding method includes:

[0094] Step S110: Provide a bonding fixture to which a flexible display module is attached; the distance between the flexible display module and the cover plate is a preset distance; the bonding fixture includes a fixture body and a bonding channel layer, the bonding channel layer is attached to the support surface of the fixture body, and the flexible display module is attached to the side of the bonding channel away from the support surface; the bonding channel layer includes a flexible wall and a hollow structure, and the flexible wall covers the hollow structure.

[0095] refer to Figure 1 and Figure 3 As shown, the flexible display module 200 has a curved surface when bent. For example, the curved surface is a spherical surface. The cover plate 300 has the same shape as the flexible display module 200 and also has the same spherical surface as the spherical surface.

[0096] refer to Figure 1 and Figure 2 A bonding fixture 100 is disposed below the flexible display module 200. The fixture body 10 acts as a support, providing support during the bonding process between the flexible display module 200 and the cover plate 300. The flexible display module 200 is attached to the side of the bonding channel layer of the bonding fixture 100 facing away from the support surface. The bonding channel layer 20 includes a flexible wall 210 and a hollow structure 220, which serves as a channel for the flow of fluid to be subsequently filled.

[0097] For example, refer to Figure 3 The fitting fixture 100 can be moved and stops moving when the flexible display module 200 and the cover plate 300 are 50µm to 300µm apart.

[0098] Step S120: Fill the hollow structure of the bonding channel layer with fluid. As the fluid enters the hollow structure, the fluid in the hollow structure exerts a thrust on the side of the flexible wall away from the support surface, so that the flexible display module is pushed to gradually bond with the cover plate.

[0099] refer to Figure 4A fluid filling tool can be used to fill fluid into the first end 221 of the hollow structure 220 of the bonding channel layer 20. The fluid will flow away from the first end. As the fluid is filled, the fluid pressure causes the flexible wall 210 of the bonding channel layer 20 to deform towards the flexible display module 200, thereby generating a thrust on the flexible display module 200. This causes the deformed area of ​​the flexible display module 200 to adhere to the cover plate 300. Furthermore, as the fluid in the hollow structure 220 gradually increases, the deformed area on the first layer gradually spreads along the fluid flow direction, thereby causing the flexible display module 200 to gradually adhere to the cover plate 300. This gradually expels the gas between the flexible display module 200 and the cover plate 300, preventing the formation of air bubbles or gaps between the flexible display module 200 and the cover plate, thus improving the bonding quality and yield.

[0100] Step S130: Remove the fitting fixture.

[0101] refer to Figure 4 Finally, after the flexible display module 200 and the cover plate 300 are bonded together, the bonding fixture can be removed.

[0102] The bonding method provided in this application embodiment is referenced. Figure 1 and Figure 2 The bonding fixture 100 used includes a fixture body 10 and a bonding channel layer 20. The bonding channel layer is attached to the support surface of the fixture body and includes a flexible wall and a hollow structure. The flexible wall covers the hollow structure. The hollow structure is used to introduce fluid. As the fluid enters the hollow structure, the fluid in the hollow structure exerts a thrust on the layer of the flexible wall away from the support surface, causing the layer of the flexible wall away from the support surface to deform. Thus, when bonding the flexible display module to the cover plate, along the direction of fluid flow, the layer of the flexible wall away from the support surface gradually deforms, allowing the flexible display module to gradually bond with the cover plate as the deformation occurs. This ensures orderly bonding and avoids the problem of air bubbles forming in the center area of ​​the bonding process due to premature contact at the ends of the flexible display module and the cover plate during the bonding process, thereby improving the bonding yield.

[0103] The specific structure and corresponding description of the bonding fixture used in the above bonding method are as described in the corresponding description of the bonding fixture mentioned above, and will not be repeated here.

[0104] As an optional implementation of the disclosure in this application, an embodiment of this application discloses a method for manufacturing a display device, which includes bonding a flexible display module and a cover plate using the bonding method provided in the above embodiment.

[0105] To ensure a high bonding yield, the process of bonding the flexible display module to the cover plate can be completed in a vacuum environment.

[0106] 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.

[0107] The above embodiments are merely illustrative of several implementation methods described in detail, but 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 specification, and these all fall within the scope of protection of this specification. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A fitting fixture, characterized in that, It includes a fixture body and a bonding channel layer, wherein the bonding channel layer is attached to the support surface of the fixture body; The bonding channel layer includes a flexible wall and a hollow structure, wherein the flexible wall covers the hollow structure; As fluid enters the hollow structure, the fluid in the hollow structure exerts a thrust on the layer of the flexible wall that is away from the supporting surface, causing the layer of the flexible wall away from the supporting surface to deform.

2. The fitting fixture according to claim 1, characterized in that, The flexible wall includes a first end and a second end disposed opposite to each other; The first end is provided with an inlet, and the second end is provided with an outlet. The fluid flows into the hollow structure from the inlet and flows out of the hollow structure from the outlet. Preferably, the fluid includes at least one of water and a colloidal liquid.

3. The fitting fixture according to claim 2, characterized in that, The layer of the flexible wall furthest from the supporting surface is the first layer; the layer of the flexible wall closest to the supporting surface is the second layer. The thickness of the first layer near the first end is less than the thickness of the first layer near the second end; Preferably, the thickness of the first layer gradually increases in the direction extending from the first end to the second end; Preferably, the first layer has a curved surface shape; Preferably, the first layer has a spherical surface. Preferably, the material of the first layer includes a flexible material; Preferably, the material of the second layer includes a rigid material; Preferably, the flexible material includes at least one of silicone and rubber.

4. The fitting fixture according to claim 3, characterized in that, The bonding channel layer also includes multiple channel baffles, which are located within the hollow structure and are distributed sequentially at intervals in the direction extending from the first end to the second end. The hollow structure is divided into multiple spaces by the multiple channel baffles.

5. The fitting fixture according to claim 4, characterized in that, The channel baffle includes a first side fixed to the second layer away from the support surface, and a second side corresponding to the first side; the channel baffle is inclined relative to the second side, and the inclination direction of the channel baffle tends to the direction from the first end to the second end; Preferably, the channel baffle includes a flexible baffle formed of a flexible material; Preferably, when the channel baffle is not deformed, the second side of the channel baffle is in contact with the side of the first layer near the support surface; Preferably, after the channel baffle is deformed, the second side of the channel baffle is not in contact with the side of the first layer near the support surface.

6. The fitting fixture according to claim 4, characterized in that, The elastic modulus of the first layer located in the same space is less than the elastic modulus of the channel baffle.

7. The fitting fixture according to claim 6, characterized in that, Along the direction extending from the first end to the second end, the elastic modulus of the first layer gradually increases; Preferably, the thickness of the bonding channel layer gradually decreases along the direction extending from the first end to the second end; Preferably, the size of the plurality of spaces gradually decreases along the direction extending from the first end to the second end.

8. The fitting fixture according to claim 1, characterized in that, It also includes an adhesive layer located on the side of the bonding channel layer opposite to the support surface.

9. A bonding method, characterized in that, include: Provides a bonding fixture for attaching flexible display modules; The distance between the flexible display module and the cover plate is a preset distance; the bonding fixture includes a fixture body and a bonding channel layer, the bonding channel layer is attached to the support surface of the fixture body, and the flexible display module is attached to the side of the bonding channel away from the support surface; the bonding channel layer includes a flexible wall and a hollow structure, and the flexible wall covers the hollow structure; Fluid is filled into the hollow structure of the bonding channel layer. As the fluid enters the hollow structure, the fluid in the hollow structure exerts a thrust on the side of the flexible wall away from the support surface, causing the flexible display module to be pushed to gradually bond with the cover plate. Remove the fitting fixture.

10. A method for manufacturing a display device, characterized in that, include: The flexible display module and the cover plate are bonded using the bonding method described in claim 9.

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