Carrier film and bonding jig

Abstract

This application relates to a carrier film and a bonding fixture for bonding a display screen to a cover plate. The carrier film includes: a guide film, including a carrier portion and connecting portions disposed on both sides of the carrier portion along a first direction, the connecting portions having a first end and a second end disposed opposite to each other along the first direction, the first end being connected to the carrier portion; and an adhesive film, layered on the carrier portion along the thickness direction of the guide film, for connecting the display screen to the guide film; wherein, in a second direction intersecting the first direction, the connecting portions and the adhesive film enclose a pressure-reducing groove that is open in the second direction, so that the adhesive film protrudes beyond the first end in the second direction. The bonding fixture including the above-mentioned carrier film provided by the embodiments of this application can improve the uniformity and firmness of the bonding between the screen and the cover plate.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a carrier film and a bonding fixture. Background Technology

[0002] In existing display devices, to ensure the safety and reliability of the screen and circuit components, a cover plate is usually installed on the light-emitting side of the display screen. The cover plate is usually directly or indirectly connected and fixed to the display screen by adhesive bonding. In this process, in order to ensure accurate alignment between the cover plate and the display screen, auxiliary bonding fixtures are usually used for bonding.

[0003] However, the bonding fixtures in related technologies need to be improved to enhance the bonding effect between the display screen and the cover plate. Summary of the Invention

[0004] This application provides a carrier film and a bonding fixture, wherein the carrier film can improve the reliability of bonding between the display screen and the cover plate.

[0005] In a first aspect, an embodiment of this application provides a carrier film for bonding a display screen to a cover plate. The carrier film includes: a guide film comprising a carrier portion and connecting portions disposed on both sides of the carrier portion along a first direction; the connecting portions having a first end and a second end disposed opposite to each other along the first direction, the first end being connected to the carrier portion; and an adhesive film, laminated on the carrier portion along the thickness direction of the guide film, for connecting the display screen to the guide film. In a second direction intersecting the first direction, the connecting portions and the adhesive film enclose a pressure-reducing groove open in the second direction, so that the adhesive film protrudes beyond the first end in the second direction. By reducing the size of the first end to form a pressure-reducing groove in the second direction, the size of the guide film at the corresponding position of the adhesive film edge in the second direction can be reduced, thereby reducing the area of ​​interference with the cover plate to be bonded, resulting in a more uniform and reliable bonding.

[0006] According to one aspect of the embodiments of this application, at least a portion of the connecting portion gradually decreases in size in the direction from the second end to the first end in the second direction, so as to facilitate processing and make the stress transmission within the guide membrane uniform and stable.

[0007] According to one aspect of the present application, the angle between the edge of the portion of the connecting part that forms the pressure relief groove and the first direction is 30° to 60°, so as to ensure the structural strength of the guiding membrane itself while reducing the interference area.

[0008] According to one aspect of the embodiments of this application, a through hole is provided in a portion of the connecting portion near the first end. The through hole penetrates the guide film along the thickness direction and is disposed adjacent to the bearing portion. Drilling holes at corresponding positions on the edge of the cover plate can further reduce the area of ​​interference that occurs during the bonding process of the guide film.

[0009] According to one aspect of the embodiments of this application, the orthographic projection of the adhesive film onto the guide film forms a projection pattern, and the through holes are provided to extend circumferentially along the projection pattern so that the through holes correspond to the edge of the cover plate, thereby ensuring that the guide film has uniform structural strength.

[0010] According to one aspect of the embodiments of this application, along a first direction, the size of the through hole is greater than or equal to 5 mm to better accommodate the edge of the cover plate.

[0011] According to one aspect of the embodiments of this application, the distance between the through hole and the edge of the connection part along the circumferential direction of the projected pattern is greater than or equal to 5 mm, so as to avoid the connection of the guide film being too narrow, which would reduce its own structural strength.

[0012] According to one aspect of the embodiments of this application, the spacing between the through hole and the edge of the connecting portion is equal along the circumferential direction of the projected pattern.

[0013] According to one aspect of the embodiments of this application, the through-hole includes a plurality of sub-through-holes, which are spaced apart circumferentially along the projected pattern. Providing multiple sub-through-holes can reduce the deformation of the guide film at the through-hole, ensuring accurate bonding and positioning.

[0014] According to one aspect of the embodiments of this application, the adhesive film is circular, and the through holes extend in an arc shape and are concentrically arranged with the adhesive film to better match the edge of the circular cover plate.

[0015] According to one aspect of the embodiments of this application, the first direction is perpendicular to the second direction, the adhesive film includes a first axis of symmetry extending along the first direction and a second axis of symmetry extending along the second direction, and the carrier film is axially symmetrical about both the first axis of symmetry and the second axis of symmetry, so as to make the stress transmission of the guide film itself more uniform.

[0016] Secondly, according to the embodiments of this application, a bonding fixture is provided, comprising: a carrier film as described in any embodiment of the first aspect; a fixing clamp, including at least two fixing ends disposed opposite to each other along a first direction, wherein the carrier film is sandwiched between the fixing ends and the distance between the fixing ends is less than the size of the carrier film in the first direction; and a contour pad, disposed on the side of the guide film away from the adhesive film, wherein the orthographic projection of the adhesive film along the thickness direction covers the orthographic projection of the contour pad along the thickness direction.

[0017] The carrier film provided in this application embodiment is used to position the display screen in the process of bonding the display screen and the cover plate. The carrier film includes a guide film stacked on top of each other and an adhesive film for connecting the display screen to be bonded to the guide film. The guide film has a carrier portion for setting the adhesive film and a connecting portion located on both sides of the carrier portion for connection and fixation. The extension dimension of the end of the connecting portion near the carrier portion in a preset direction is smaller than that of the adhesive film, so that the adhesive film protrudes from this end. This can reduce the area of ​​interference between the guide film and the edge of the cover plate during the bonding process, thereby reducing the influence of the guide film on the bonding effect of the edge area of ​​the display screen and making the bonding more uniform and reliable. Attached Figure Description

[0018] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of a carrier membrane provided in one embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the structure of a guide membrane provided in one embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the carrier membrane provided in another embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the structure of the carrier membrane provided in another embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the fitting fixture provided in one embodiment of this application.

[0024] in:

[0025] 100-Carrier film; 200-Fixing clamp; 300-Contouring pad; 400-Fitting fixture; 500-Display screen; 600-Cover plate;

[0026] 10 - Guide film; 20 - Adhesive film; 30 - Fixing end;

[0027] 11-Bearing part; 12-Connecting part; 13-Through hole; 14-Pressure relief groove; 21-Projected pattern; 22-First axis of symmetry; 23-Second axis of symmetry;

[0028] 121 - First end; 122 - Second end; 131 - Sub-through hole;

[0029] X - First direction; Y - Second direction; Z - Thickness direction.

[0030] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0031] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0033] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0034] The features and exemplary embodiments of various aspects of this application will now be described in detail. Furthermore, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0035] In existing display panels, a cover plate is typically installed on the outermost layer of the light-emitting side to protect the internal structure and provide a better tactile feel for the user. This cover plate is usually bonded to the light-emitting side of the display screen using optical adhesive. Furthermore, depending on the application environment and display requirements, display panels can have various shapes, and the cover plate must also have a corresponding shape. Therefore, in the process of bonding the cover plate to the display screen, to ensure the display and protection effects after bonding, the cover plate and the display screen need to be accurately aligned before bonding.

[0036] Based on this, the applicant discovered that existing bonding processes typically use a carrier film to position the cover plate and the display screen. The carrier film is sandwiched between fixing clamps with a spacing smaller than its length, allowing for a certain length allowance. The display screen to be bonded is then placed on the carrier film, and its position is achieved by lifting and tightening the carrier film. However, the cover plate usually has grooves to facilitate bonding and may also have irregular edges. Therefore, interference between the carrier film and the cover plate is likely to occur during bonding, creating forces at the edges of the display screen that hinder bonding. This ultimately leads to problems such as weak adhesion, easy peeling, uneven bonding, and poor display quality.

[0037] To address the aforementioned issues, this application proposes a carrier film and a corresponding bonding fixture. The carrier film includes a guide film for tensioning and positioning, and an adhesive film for connecting the display screen to be bonded to the guide film. The guide film proposed in this application can effectively reduce the area of ​​interference with the cover plate by adjusting its width, thereby reducing the impact of the tensioned guide film on the bonding of the display screen edge and improving the overall uniformity and reliability of the bonding.

[0038] It is understood that the following embodiments of this application are only used as an example of applying the carrier film and bonding fixture to the bonding of the display screen and the cover plate of the display panel. However, this application is not limited to this and can also be applied to other processes that require bonding and positioning, and to protect them.

[0039] To better understand this application, the following will be combined with... Figures 1 to 5 The carrier film and bonding fixture provided in the embodiments of this application will be described in detail.

[0040] Please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the carrier membrane provided in one embodiment of this application. Figure 2 This is a schematic diagram of the structure of a guide membrane provided in one embodiment of this application.

[0041] In a first aspect, an embodiment of this application provides a carrier film 100 for bonding a display screen 500 to a cover plate 600. The carrier film 100 includes a guide film 10 and an adhesive film 20. The guide film 10 includes a carrier portion 11 and connecting portions 12 disposed on both sides of the carrier portion 11 along a first direction X. The connecting portions 12 have a first end 121 and a second end 122 disposed opposite to each other along the first direction X. The first end 121 is connected to the carrier portion 11. The adhesive film 20 is stacked on the carrier portion 10 along the thickness direction Z of the guide film 10 for connecting the display screen 500 to the guide film 100. In a second direction Y intersecting the first direction X, the connecting portions 12 and the adhesive film 20 form a pressure relief groove 14 that is open in the second direction Y, so that the adhesive film 20 protrudes from the first end 121 in the second direction Y.

[0042] This application provides a carrier film 100, including a guide film 10 and an adhesive film 20 stacked together. Specifically, the guide film 10 extends along a first direction X and may have a carrier portion 11 and connecting portions 12 located on opposite sides of the carrier portion 11 in the first direction X. The guide film 10 is used to position the display screen 500 to be bonded thereto. During use, the two ends of the guide film 10 in the first direction X can be fixed at preset positions, so that the guide film 10 has a certain length margin. During the bonding process, a pad or the like is used to lift and tighten the guide film 10 towards the cover plate 600, which can accurately position the display screen 500 to be bonded thereto. This positioning method is low in cost and easy to operate.

[0043] The guide film 10 includes a carrier portion 11, which can be used to support the display screen 500. Connecting portions 12 for connecting the carrier portion 11 to a fixed position can be provided on both sides of the carrier portion 11. The specific shape and size of the carrier portion 11 can be designed according to the shape and size of the display screen 500 to be bonded and the adhesive film 20.

[0044] In this embodiment, the adhesive film 20 and the guide film 10 are stacked. The two opposing surfaces of the adhesive film 20 can both be adhesive and are respectively bonded to the guide film 10 and the display screen 500 to fix the display screen 500 to a preset position on the guide film 10, so that the display screen 500 can be accurately aligned with the cover plate 600 after the guide film 10 is tightened.

[0045] Optionally, the adhesive film 20 can be made of UV (Ultraviolet Rays) anti-adhesion film. The adhesive film 20 made of this material will have a decrease in viscosity under UV light irradiation, so that the two parts bonded by the anti-adhesion film can be separated from each other more easily. This makes it easier to remove the carrier film 100 after the display screen 500 and the cover plate 600 are bonded, while avoiding damage to the display screen 500, reducing the traces left after removing the carrier film 100, and improving the product yield.

[0046] It is understood that the adhesive film 20 is used to connect the display screen 500 to the guide film 10 and fix the relative position of the two. Based on this, the adhesive film 20 can have the same or similar shape and size as the display screen 500. That is, the orthographic projection of the display screen 500 on the carrier film 100 can coincide with the adhesive film 20, or the orthographic projection of the display screen 500 on the carrier film 100 can be slightly larger than the adhesive film 20 and cover the adhesive film 20, so as to form a stable and uniform connection relationship, and also facilitate positioning.

[0047] In this embodiment, the guide film 10 has a supporting portion 11 and connecting portions 12 located on opposite sides of the supporting portion 11. Each connecting portion 12 has a first end 121 and a second end 122 opposite to each other in the first direction X, wherein the end connected to the supporting portion 11 is the first end 121. In the second direction Y intersecting the first direction X, the size of the first end 121 is smaller than the size of the adhesive film 20 in that direction. That is, the two edges of the connecting portion 12 extending along the first direction X and the part of the edge of the adhesive film 20 sandwiched between the connecting portions 12 together form two opposing pressure relief grooves 14. Each pressure relief groove 14 is recessed along the second direction Y, and the adhesive film 20 is protruding from the first end 121 in the second direction Y. This reduces the width of the guide film 10 that interferes with the edge of the cover plate 600 in the second direction Y during the bonding process, thereby reducing the force that hinders the display screen 500 from embedding into the groove on the cover plate 600, so that the edge of the display screen 500 can also achieve a better bonding effect.

[0048] It is understood that in the following embodiments and accompanying drawings of this application, the adhesive film 20, the display screen 500 to be bonded, and the cover plate 600 are all circular as examples. The circular edges will cause the guide film 10 to be subjected to different degrees of tension at different positions in the second direction Y. Using the carrier film 100 in the embodiments of this application can significantly improve the bonding quality. However, it should be understood that this application is not limited to this. The aforementioned three components can also be rectangular, elliptical, or have irregular edges, etc., and this application does not make specific limitations in this regard.

[0049] In some alternative embodiments, at least a portion of the connecting portion 12 gradually decreases in size in the second direction Y along the direction from the second end 122 to the first end 121.

[0050] The guide film 10 in this embodiment includes a support portion 11 that supports the adhesive film 20 and connecting portions 12 on both sides. The first end 121 of the connecting portion 12 near the support portion 11 has a size smaller than that of the adhesive film 20 in the second direction Y, thereby forming a pressure relief groove 14. Based on this, the size of the connecting portion 12 can gradually decrease along the direction from the second end 122 to the first end 121, that is, the pressure relief groove 14 can have a sloping edge. This can ensure the strength of the guide film 10 itself while reducing the area that interferes with the edge of the cover plate 600, avoiding damage to the guide film 10 when it is stretched, and at the same time making the shape easy to process.

[0051] Understandably, each pressure-reducing groove 14 is composed of three edges connected sequentially. These three edges are two edges provided by the two connecting portions 12 on both sides of the adhesive film 20, and the edge of the adhesive film 20 sandwiched between the aforementioned two edges. In embodiments where at least some of the connecting portions 12 gradually decrease in extension dimension in the second direction Y, the pressure-reducing groove 14 has a groove bottom protruding outward in the second direction Y and "V"-shaped sidewalls whose width gradually increases in the same direction. Optionally, the two sidewalls can be symmetrically arranged so that the stress inside the guide film 10 can be uniformly transmitted.

[0052] In some optional embodiments, the angle between the edge of the portion of the connecting portion 12 that encloses the pressure-reducing groove 14 and the first direction X is 30° to 60°.

[0053] In this embodiment, the guide film 10 has two connecting portions 12 arranged opposite to each other along the first direction X. The size of the connecting portions 12 gradually decreases in the second direction Y. The edge of the pressure relief groove 14 formed therefrom is composed of a portion of the edge of the adhesive film 20 and the edges of the connecting portions 12 located on both sides of the adhesive film 20. Thus, a certain angle α is formed between the portion of the edge belonging to the connecting portion 12 and the first direction X. The angle α can be 30° to 60°.

[0054] It is understandable that the included angle α is the tilt angle of the edge of the connecting part 12. That is, the included angle α is positively correlated with the change in the size of the connecting part 12 in the second direction Y. The size of the included angle α can be adjusted accordingly by adjusting the change in the size of the connecting part 12 in the second direction Y and the starting position of the change, so as to keep it within a suitable range. Setting the included angle α between 30° and 60° can further maintain the size of the connecting part 12 in the second direction Y. While reducing the interference area and ensuring the bonding quality between the display screen 500 and the cover plate 600, it can also maintain the structural strength of the guide film 10 itself, and avoid forming an excessively narrow section at the first end 121, which would reduce the upper limit of the stress that the guide film 10 can bear.

[0055] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of the carrier membrane provided in another embodiment of this application. In some optional embodiments, a through hole 13 is provided in a portion of the connecting portion 12 near the first end 121. The through hole 13 penetrates the guide membrane 10 along the thickness direction Z, and the through hole 13 is disposed adjacent to the carrier portion 11.

[0056] In order to further reduce the interference between the guide film 10 and the groove edge of the cover plate 600, the guide film 10 in this embodiment of the application may also be provided with a through hole 13 in a part of the connecting portion 12 near the first end 121. Similar to the arrangement of the pressure relief groove 14, the through hole 13 can further reduce the area of ​​interference generated by the guide film 10 during the bonding process.

[0057] The through hole 13 is disposed adjacent to the support portion 11. That is, the through hole 13 is disposed in the area near the first end 121 in a similar manner to the width reduction position of the connecting portion 12. It is adjacent to the support portion 11 on which the adhesive film 20 is disposed and is disposed corresponding to the groove edge of the cover plate 600, so as to achieve a better effect of reducing the interference area.

[0058] In some optional embodiments, the orthographic projection of the adhesive film 20 onto the guide film 10 forms a projection pattern 21, and the through hole 13 extends circumferentially along the projection pattern 21.

[0059] As mentioned above, in order to ensure the connection effect, the adhesive film 20 in this embodiment can maintain the same shape and similar area size as the display screen 500. At this time, the orthographic projection of the adhesive film 20 on the guide film 10 is denoted as the projection pattern 21. In order to make the guide film 10 have a more uniform structural strength in the direction from the projection pattern 21 to the edge of the guide film 10, the through hole 13 can have the same extension direction as the part of the projection pattern 21 facing the connection part 12, that is, it is circumferentially extended with the projection pattern 21.

[0060] In some optional embodiments, the extension dimension of the through hole 13 along the first direction X is greater than or equal to 5 mm. Specifically, the extension dimension of the through hole 13 along the direction from the center of the projected pattern 21 to the boundary of the guide film 10 is greater than or equal to 5 mm.

[0061] To better align the through-hole 13 with areas on the cover plate 600 that are difficult to adhere to, the through-hole 13 can have a certain extension dimension in its width direction (first direction X), that is, in the direction from the projected pattern 21 to the boundary of the guide film 10. This extension dimension can be, for example, greater than or equal to 5mm. The through-hole 13 with a certain extension dimension can cover the position corresponding to the groove of the cover plate 600 as much as possible, thereby ensuring that the adhesion pressure of the center and edge of the display screen 500 is the same or similar during bonding, forming a uniform connection effect and avoiding adverse effects on the display effect.

[0062] It is understood that the extension dimension of the through hole 13 in the aforementioned direction will have a corresponding impact on the structural strength of the guide film 10 in that direction. In order to avoid deformation of the guide film 10 at the through hole 13 that affects the positioning accuracy of the display screen 500, the extension dimension of the through hole 13 in the first direction X should have a certain upper limit. The specific parameters can be designed according to the size of the adhesive film 20 and the structural strength of the guide film 10 itself. This application does not make any specific limitations on this.

[0063] In some optional embodiments, the distance between the through hole 13 and the edge of the connecting portion 12 is greater than or equal to 5 mm along the circumference of the projected pattern 21. Specifically, the distance between the through hole 13 and the edge of the first end 121 is greater than or equal to 5 mm.

[0064] In this embodiment, the through hole 13 is located near the first end 121 and can be parallel to the edge of the projected pattern 21. That is, the through hole 13 can extend along the circumference of the projected pattern 21. On this basis, the through hole 13 should maintain a certain distance from the edge of the connecting part 12 in this direction to provide corresponding stress bearing strength and avoid problems such as breakage of the easily damaged edge after tensioning. This distance can be greater than or equal to 5mm.

[0065] In some alternative embodiments, the spacing between the through hole 13 and the edge of the connecting portion 12 is equal along the circumference of the projected pattern 21.

[0066] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of a carrier membrane provided in another embodiment of this application. In some optional embodiments, the through hole 13 includes a plurality of sub-through holes 131, which are spaced apart circumferentially along the projected pattern 21.

[0067] Along the extension direction of the through hole 13 itself, the through hole 13 in this embodiment may include a plurality of spaced sub-through holes 131. These sub-through holes 131 are arranged sequentially along a direction parallel to the edge of the projection pattern 21 formed by the projection of the adhesive film 20, so as to better correspond to the edge areas that are difficult to adhere during the bonding process. Furthermore, by spaced out the plurality of sub-through holes 131, the degree of deformation of the guide film 10 at the through hole 13 can be reduced. Thus, the connection between the support portion 11 and the main body of the connecting portion 12 is formed through the gap between adjacent sub-through holes 131, ensuring the accuracy of the guide film 10 in positioning the display screen 500.

[0068] Optionally, the multiple sub-holes 131 can have the same shape and size and be equally spaced to form a uniform stress transmission channel, so as to avoid the problem of tilting, twisting deformation or even breakage of the guide membrane 10 after tensioning, and improve the overall reliability of the carrier membrane 10.

[0069] In some alternative embodiments, the adhesive film 20 is circular, and the through hole 13 extends in an arc shape and is concentrically disposed with respect to the adhesive film 20.

[0070] In this embodiment, the adhesive film 20 may have the same shape and outline as the display panel 500 and the cover plate 600. In the embodiment where the display panel 500 is a circular display screen, the adhesive film 20 may also be circular. In this case, the through hole 13 may extend in an arc parallel to the edge of the adhesive film 20, and its arc trajectory may be concentrically set with the projection pattern 21 formed by the orthographic projection of the adhesive film 20, so as to ensure that the spacing between the through hole 13 and the adhesive film 20 is uniform, thereby ensuring that the guide film 10 can bear a relatively uniform force in the area where its size decreases along the second direction Y and the through hole 13 is provided.

[0071] It is understandable that the adhesive film 20 has the same shape and outline as the display screen 500 to be bonded, and the size is the same or slightly smaller than the display screen 500. Based on this, the through hole 13 is parallel to and concentrically set with the edge of the adhesive film 20, which allows the through hole 13 to be accurately set in the part of the guide film 10 that interferes with the edge of the cover plate 600, so as to better reduce the impact of the guide film 10 on the bonding after it is tightened.

[0072] When the adhesive film 20 is circular, both the display screen 500 and the cover plate 600 have arc-shaped edges along the first direction X. Therefore, when the guide film 10 is tightened along the first direction X, the bonding effect of the circular display screen 500 can be significantly improved by reducing the interference area. However, it should be understood that this application is not limited to this. The display screen 500, the cover plate 600 and the adhesive film 20 can also be set to other shapes, which can also achieve the effect of improving the bonding uniformity.

[0073] In some optional embodiments, the first direction X is perpendicular to the second direction Y, the adhesive film 20 includes a first axis of symmetry 22 extending along the first direction X and a second axis of symmetry 23 extending along the second direction Y, and the carrier film 100 is axially symmetrical about both the first axis of symmetry 22 and the second axis of symmetry 23.

[0074] In this embodiment, the carrier film 100 extends along the first direction X, and the edge of the guide film 10 forms two opposing pressure-reducing grooves 14 in the second direction Y. Furthermore, the first direction X and the second direction Y can be perpendicular to each other. In this case, with the center of the adhesive film 20 as the intersection point, the carrier film 100 can have a first axis of symmetry 22 and a second axis of symmetry 23 extending along the first direction X and the second direction Y respectively. That is, the first axis of symmetry 22 and the second axis of symmetry 23 are perpendicular to each other and can intersect at the center of the adhesive film 20.

[0075] In this embodiment, the carrier membrane 100 is symmetrically arranged about both the first axis of symmetry 22 and the second axis of symmetry 23, forming an axisymmetric structure with two perpendicular axes of symmetry, which makes the transmission of force by the carrier membrane 100 more uniform. It is understood that in the embodiment where the guide membrane 10 is provided with a through hole 13, the through hole 13 is also symmetrically arranged about the aforementioned two axes of symmetry.

[0076] Secondly, according to the embodiments of this application, a bonding fixture 400 is proposed, including a carrier film 100, a fixing clamp 200, and a contouring pad 300 as described in any embodiment of the first aspect. The fixing clamp 200 includes at least two fixing ends 30 arranged opposite each other along a first direction X. The carrier film 100 is sandwiched between the fixing ends 30, and the distance between the fixing ends 30 is smaller than the size of the carrier film 100 in the first direction X. The contouring pad 300 is disposed on the side of the guide film 10 away from the adhesive film 20, and the orthographic projection of the adhesive film 20 along the thickness direction Z covers the orthographic projection of the contouring pad 300 along the thickness direction Z.

[0077] Please see Figure 5 , Figure 5 This is a schematic diagram of the bonding fixture provided in one embodiment of this application. This application also proposes a bonding fixture 400, which can be used in a process of bonding a display screen to a cover plate. It includes a carrier film 100, a fixing clamp 200, and a contoured pad 300. The fixing clamp 200 includes at least two fixing ends 30, which clamp the second end 122 of the connecting portion 12 in the carrier film 100 within the fixing ends 30, thereby fixing the carrier film 100 in a preset position. Simultaneously, the distance the carrier film 100 extends in the first direction X can be greater than the distance between the fixing ends 30. In this case, the carrier film 100 has a certain length margin, allowing it to bend laterally in its thickness direction Z.

[0078] The contour pad 300 is disposed below the carrier film 100, that is, on the side of the guide film 10 opposite to the adhesive film 20. The contour pad 300 is used to lift the carrier film 100 to which the display screen 500 is attached upwards, so that the display screen 500 is positioned in a preset position and protrudes, in order to facilitate the next bonding process with the cover plate 600. The contour pad 300 may also have the same shape and contour as the display screen 500 and the adhesive film 20, and is disposed within the contour range of the orthographic projection pattern of the adhesive film 20 along the thickness direction Z, so as to lift the part of the adhesive film 20 to which the display screen 500 is attached to the preset position.

[0079] It is understandable that, in the thickness direction Z, the cover plate 600, display screen 500, adhesive film 20, guide film 10 and contour pad 300 are sequentially aligned to ensure accurate alignment during the bonding process and facilitate the application of force along the thickness direction Z to make the connection firm.

[0080] The bonding fixture 400 provided in this application embodiment has all the beneficial effects of the carrier film 100 provided in this application embodiment. For details, please refer to the specific description of the carrier film 100 in the above embodiments. This embodiment will not repeat the description here.

[0081] It is understood that the above description and details are merely exemplary and explanatory, and do not constitute a limitation on this application. Those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Thus, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A carrier film for bonding a display screen to a cover plate, characterized in that, include: A guide film includes a carrier portion and a connecting portion disposed on both sides of the carrier portion along a first direction. The connecting portion has a first end and a second end disposed opposite to each other along the first direction, and the first end is connected to the carrier portion. An adhesive film is stacked on the carrier portion along the thickness direction of the guide film, and is used to connect the display screen to the guide film; In a second direction intersecting the first direction, the connecting portion and the adhesive film are surrounded to form a pressure-reducing groove that is open in the second direction, so that the adhesive film protrudes from the first end in the second direction; The pressure relief groove is used to avoid the cover plate during the process of the display screen and the cover plate being attached; Wherein, a through hole is provided in a portion of the connecting part near the first end, the through hole penetrates the guide membrane along the thickness direction, and the through hole is disposed adjacent to the bearing part; The adhesive film is circular, and the through hole extends along an arc and is concentrically arranged with the adhesive film.

2. The carrier membrane according to claim 1, characterized in that, Along the direction from the second end to the first end, at least a portion of the connecting portion gradually decreases in size in the second direction.

3. The carrier membrane according to claim 2, characterized in that, The angle between the edge of the portion of the connecting part that encloses the pressure relief groove and the first direction is 30° to 60°.

4. The carrier membrane according to claim 1, characterized in that, The adhesive film is projected onto the guide film to form a projection pattern, and the through hole extends circumferentially along the projection pattern.

5. The carrier membrane according to claim 1, characterized in that, Along the first direction, the size of the through hole is greater than or equal to 5 mm.

6. The carrier membrane according to claim 4, characterized in that, Along the circumference of the projected pattern, the distance between the through hole and the edge of the connecting part is greater than or equal to 5 mm.

7. The carrier membrane according to claim 6, characterized in that, Along the circumference of the projected pattern, the distance between the through hole and the edge of the connecting part is equal.

8. The carrier membrane according to claim 4, characterized in that, The through hole includes a plurality of sub-through holes, which are spaced apart circumferentially along the projected pattern.

9. The carrier membrane according to any one of claims 1 to 8, characterized in that, The first direction is perpendicular to the second direction.

10. The carrier membrane according to claim 9, characterized in that, The adhesive film includes a first axis of symmetry extending along the first direction and a second axis of symmetry extending along the second direction, and the carrier film is axially symmetrical about both the first axis of symmetry and the second axis of symmetry.

11. A fitting fixture, characterized in that, include: The carrier membrane as described in any one of claims 1 to 10; A fixing clamp includes at least two fixing ends arranged opposite each other along the first direction, the carrier film is clamped between the fixing ends, and the distance between the fixing ends is smaller than the size of the carrier film in the first direction; A contoured pad is disposed on the side of the guide film opposite to the adhesive film, and the orthographic projection of the adhesive film along the thickness direction covers the orthographic projection of the contoured pad along the thickness direction.

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