Curved Screen Bonding Device and Curved Screen Bonding Method

Abstract

The present application discloses a curved screen laminating device and method. The device includes a guide film, which is used to laminate with a flexible display module and change the shape of the flexible display module. The guide film includes a main body and a bending retaining portion. The main body includes a first section, a second section, and a bending section connected between the first section and the second section. The main body has a first surface and a second surface arranged relative to each other in its thickness direction. The first surface is used to support the flexible display module. The bending region can be bent toward a side away from the first surface to place the main body in a bent state. The bending retaining portion includes a first end and a second end. The first end is used to connect with the first section and the second end is used to connect with the second section. The bending retaining portion can provide a force to the first section and the second section to keep the main body in a bent state. The curved screen laminating device provided by the present application can improve the laminating yield of the flexible display module and the cover plate with a stepped portion.

Description

Technical Field

[0001] This application belongs to the technical field of display, and particularly relates to a curved screen laminating device and a curved screen laminating method. Background Art

[0002] With the development of display technology, the requirement for the screen-to-body ratio of display devices is getting higher and higher. Flexible display modules have the advantages of being bendable, having good flexibility, being thin and light in volume, and having low power consumption. They can be laminated with a cover plate having a stepped portion to meet people's extreme pursuit of narrow or borderless displays, improve the screen-to-body ratio of display devices, and thus enhance the user experience. However, in related technologies, when a flexible display module is laminated with a cover plate having a stepped portion, the stepped portion is likely to interfere with the flexible display module, thereby causing damage to the flexible display module and affecting the yield rate after lamination. Summary of the Invention

[0003] The embodiments of this application provide a curved screen laminating device and a curved screen laminating method, which can improve the lamination yield rate of a flexible display module and a cover plate having a stepped portion.

[0004] An embodiment of the first aspect of the embodiments of this application provides a curved screen laminating device, including a guiding film, which is used to laminate with a flexible display module and change the shape of the flexible display module. The guiding film includes:

[0005] A main body portion, which includes a first branch portion, a second branch portion, and a bent branch portion connected between the first branch portion and the second branch portion. The main body portion has a first surface and a second surface oppositely arranged in its own thickness direction. The first surface is used to support the flexible display module, and the bent area can be bent toward the side away from the first surface so that the main body portion is in a bent state;

[0006] A bending holding portion, including a first end and a second end. The first end is used to connect with the first branch portion, and the second end is used to connect with the second branch portion. The bending holding portion can provide acting forces for the first branch portion and the second branch portion so that the main body portion is kept in the bent state.

[0007] According to the implementation manner of the first aspect of the present invention, the bending holding portion and the main body portion have an integral structure. The bending holding portion includes a fixed end and a free end. The bending holding portion is integrally formed with the main body portion through the fixed end, and the free end is detachably arranged with the main body portion.

[0008] According to any of the aforementioned embodiments of the first aspect of the present invention, the bending retaining portion is arranged in the first division, the fixed end is the first end, the free end is the second end, and the second end of the bending retaining portion is detachable from the second division; or, the bending retaining portion is arranged in the second division, the fixed end is the second end, the free end is the first end, and the first end of the bending retaining portion is detachable from the first division.

[0009] According to any of the aforementioned embodiments of the first aspect of the present invention, the free end is fixed to the main body by bonding.

[0010] According to any of the aforementioned embodiments of the first aspect of the present invention, the second surface is provided with a first magnetic portion, the free end is provided with a second magnetic portion, and the free end is fixed to the main body by magnetic attraction.

[0011] According to any of the aforementioned embodiments of the first aspect of the present invention, at least one of the first magnetic attraction portion and the second magnetic attraction portion is a magnet, and the other is made of a magnetic material;

[0012] The second magnetic attraction portion is a block structure provided at the free end of the bent holding portion;

[0013] The first magnetic portion is a planar structure covering the second surface, or a strip structure extending along the arrangement direction of the first sub-portion, the second sub-portion and the bent sub-portion, or a block structure corresponding to the second magnetic portion one by one.

[0014] According to any of the aforementioned embodiments of the first aspect of the present invention, the number of the bending holding portions is two, and they are symmetrically arranged on both sides of the bending section along the arrangement direction of the first section, the second section and the bending section.

[0015] According to any of the aforementioned embodiments of the first aspect of the present invention, the first end and the second end of the bending retaining portion are respectively detachably disposed from the main body.

[0016] According to any of the aforementioned embodiments of the first aspect of the present invention, the bending sub-portion has a thinning area, the thinning area includes an opening penetrating the bending sub-portion along the thickness direction of the bending sub-portion, and / or the thinning area includes a groove recessed along the thickness direction of the bending sub-portion;

[0017] Preferably, the orthographic projection of the groove on the bending section covers the bending section.

[0018] An embodiment of the second aspect of the present application further provides a curved screen laminating method for laminating a flexible display module to a cover plate, wherein the flexible display module includes a display area, a binding area, and a bending area located between the display area and the binding area, and the cover plate includes a flat portion and a stepped portion. The laminating method includes:

[0019] Fixing the flexible display module to the first surface of the guide film, including fixing the display area to the first subsection of the guide film, fixing the binding area to the second subsection of the guide film, and aligning the bending area with the bending subsection;

[0020] bending the bent portion of the guide film toward a side away from the first surface at a preset angle, so that the main body of the guide film is in a bent state;

[0021] Connecting a first end of the bending holding portion of the guide film to the first sub-portion, and connecting a second end of the bending holding portion to the second sub-portion, wherein the bending holding portion can provide a force for the first sub-portion and the second sub-portion to keep the main body in the bent state and prevent the flexible display module from contacting the step portion;

[0022] Laminating the display area of the flexible display module to the flat surface;

[0023] The flexible display module is separated from the guide film, and the bending area of the flexible display module is bent toward a side away from the cover plate, so that the binding area is bent to a side of the display area away from the light emitting surface.

[0024] In the curved screen bonding device provided by the present application, since the guide film includes a main body and a bending retention portion, the first end of the bending retention portion is connected to the first subsection, and the second end is connected to the second subsection. Thus, the bending retention portion can provide a force to suppress rebound for the first and second subsections. That is, after the main body is bent, it can cooperate with the bending retention portion to form a stable structure, which can effectively improve the rebound problem after the main body is bent. Since the flexible display module is fixed to the first surface of the main body, the guide film can maintain the bent state of the flexible display module after synchronous bending. During the bonding process, the bending area of the flexible display panel can be bent to a preset angle toward the side away from the light-emitting surface to reduce its rebound, thereby reducing the extrusion interference between the flexible display module and the step portion of the cover plate, thereby reducing the probability of damage to the flexible display module and improving the bonding quality of the flexible display module and the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of a curved screen laminating device provided by an embodiment of the present application;

[0027] Figure 2 It is a reference diagram of the usage state of a curved screen laminating device provided by an embodiment of the present application;

[0028] Figure 3 is Figure 2 The cross-sectional view along P-P' in;

[0029] Figure 4 It is a reference diagram of the usage state of a curved screen laminating device provided by an embodiment of the present application;

[0030] Figure 5 It is a schematic structural diagram of another curved screen laminating device provided by an embodiment of the present application;

[0031] Figure 6 It is a schematic structural diagram of another curved screen laminating device provided by an embodiment of the present application;

[0032] Figure 7 It is a schematic structural diagram of another curved screen laminating device provided by an embodiment of the present application;

[0033] Figure 8 It is a schematic structural diagram of another curved screen laminating device provided by an embodiment of the present application;

[0034] Figure 9 It is a bottom view of another curved screen laminating device provided by an embodiment of the present application;

[0035] Figure 10 It is a schematic structural diagram of another curved screen laminating device provided by an embodiment of the present application;

[0036] Figure 11 Schematic structural diagram of another curved screen laminating device provided by an embodiment of the present application;

[0037] Figure 12 is Figure 2 The reference diagram of the usage state in the direction along Q-Q';

[0038] Figure 13 It is a schematic flowchart of a curved screen laminating method provided by an embodiment of the present application.

[0039] In the accompanying drawings:

[0040] 1 - Curved surface screen laminating device; 10 - Guide film; 101 - Body part; 1011 - First branch; 1012 - Second branch; 1013 - Bent branch; 1014 - First surface; 1015 - Second surface; 102 - Bent holding part; 103 - First magnetic attraction part; 104 - Second magnetic attraction part; 2 - Flexible display module; 21 - Flexible display panel; 22 - Polarizer; 23 - Bending protection layer; 24 - First support film; 25 - Second support film; 26 - Flexible circuit board; 27 - Chip; AA - Display area; NA1 - Bonding area; NA2 - Bending area; 3 - Cover plate; 31 - Step part; 4 - Adhesive layer; 5 - Adsorption component; 6 - Profiled indenter; 7 - Carrier; 8 - Clamping component; Detailed implementation manners

[0041] The features and exemplary embodiments of each aspect of the present application will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The description of the embodiments below is only intended to provide a better understanding of the present application by showing examples of the present application.

[0042] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover a non - exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0043] The flexible display module includes a display area, a bending area, and a bonding area. To achieve narrow-bezel display, it is necessary to bend the bending area to the side away from the light-emitting surface, so that the bonding area is bent to the side away from the light-emitting surface, increasing the screen-to-body ratio of the display area. The cover plate includes a flat portion and a stepped portion. After the flexible display panel is attached to and bent with the cover plate, it should be located within the accommodation space surrounded by the flat portion and the stepped portion. When attaching the flexible display module to the above-mentioned cover plate, it is necessary to first attach the display area to the side of the flat portion of the cover plate facing the accommodation space, and then bend the bonding area to the side of the display area away from the flat portion. The inventor found through research that when attaching the display area to the flat portion of the cover plate, since the flexible display module is not bent, the area of the flexible display module is larger than that of the cover plate at this time, and the stepped portion is likely to interfere with the bending area. Specifically, when the display surface of the cover plate is facing down, the bending area and the bonding area of the flexible display module will be inclined and overlapped on the stepped portion at a certain angle, and the flexible circuit board and the chip located in the bonding area are both on the side of the stepped portion away from the accommodation space. Due to the self-gravity of the flexible circuit board and the chip, etc., an additional pulling force will be generated on the flexible display panel in the flexible display module, which is likely to cause damage to the flexible display panel; when the display surface of the cover plate is facing up, the stepped portion will directly press the bending area of the flexible display module, which is likely to cause damage to the bending protection layer in the flexible display module, resulting in the offset of the neutral layer in the bending area, increasing the risk of the metal wire breaking under stress in the bending area, and there are problems such as screen disconnection and poor display after full attachment. Based on the research of the above problems, the inventor provides a curved screen attachment device and a curved screen attachment method to improve the attachment yield of the flexible display module and the cover plate with a stepped portion.

[0044] For a better understanding of the present application, the following will be described in detail in conjunction with Figures 1 to 13 the curved screen attachment device and the curved screen attachment method according to the embodiments of the present application.

[0045] Please refer to Figures 1 to 4, an embodiment of the present application provides a curved screen laminating device 1, including a guiding film 10, which is used to laminate with a flexible display module 2 and change the shape of the flexible display module 2. The guiding film 10 includes a main body portion 101 and a bending holding portion 102. The main body portion 101 includes a first sub-portion 1011, a second sub-portion 1012, and a bending sub-portion 1013 connected between the first sub-portion 1011 and the second sub-portion 1012. The main body portion 101 has a first surface 1014 and a second surface 1015 that are oppositely arranged in its own thickness direction. The first surface 1014 is used to support the flexible display module 2, and the bending area NA2 can be bent toward the side away from the first surface 1014 so that the main body portion 101 is in a bent state. The bending holding portion 102 includes a first end and a second end. The first end is used to connect with the first sub-portion 1011, and the second end is used to connect with the second sub-portion 1012. The bending holding portion 102 can provide a force for the first sub-portion 1011 and the second sub-portion 1012 so that the main body portion 101 remains in the bent state.

[0046] In the curved screen laminating device 1 provided by the present application, a guiding film 10 is included. The guiding film 10 is used to copy the shape of the flexible display module 2 fixed to the guiding film 10, so as to facilitate laminating the flexible display module 2 with a cover plate 3 having a stepped portion. The flexible display module 2 includes a display area AA, a bonding area NA1, and a bending area NA2 located between the display area AA and the bonding area NA1. The guiding film 10 includes a main body portion 101 and a bending holding portion 102. The main body portion 101 has a first surface 1014 and a second surface 1015 that are oppositely arranged in its own thickness direction. The first surface 1014 is used to support the flexible display module 2, that is, the first surface 1014 is used to be fixed to the flexible display module 2. The main body portion 101 includes a first sub-portion 1011, a second sub-portion 1012, and a bending sub-portion 1013 connected between the first sub-portion 1011 and the second sub-portion 1012. Among them, the first sub-portion 1011 is used to be fixed to the display area AA of the flexible display module 2, the second sub-portion 1012 is used to be fixed to the bonding area NA1 of the flexible display module 2, and the bending sub-portion 1013 is used to correspond to the bending area NA2 of the flexible display module 2. By synchronously bending the bending sub-portion 1013 and the bending area NA2 toward the side away from the light-emitting surface, the flexible display module 2 and the main body portion 101 can be bent by a preset angle. Then, by connecting the first end of the bending holding portion 102 to the first sub-portion 1011 and the second end to the second sub-portion 1012, the bending holding portion 102 can provide a force for the first sub-portion 1011 and the second sub-portion 1012, inhibit the rebound of the flexible display panel 21 and the main body portion 101 after bending, maintain the above preset angle, reduce the probability of contact between the flexible display module 2 and the stepped portion of the cover plate 3 during the laminating process, thereby reducing the probability of damage to the flexible display module 2 caused by the stepped portion, and improving the laminating quality of the flexible display module 2 and the cover plate 3.

[0047] In the curved screen bonding device 1 provided in the present application, since the guide film 10 includes a main body portion 101 and a bending retaining portion 102, the first end of the bending retaining portion 102 is connected to the first branch 1011, and the second end is connected to the second branch 1012, so that the bending retaining portion 102 can provide a force to suppress rebound for the first branch 1011 and the second branch 1012, that is, after the main body portion 101 is bent, it can cooperate with the bending retaining portion 102 to form a stable structure, which can effectively improve the rebound problem of the main body portion 101 after bending. Since the flexible display module 2 is fixed to the first surface 1014 of the main body 101, the guide film 10 can maintain the bent state of the flexible display module 2 after being bent synchronously. During the bonding process, the bending area NA2 of the flexible display panel 21 can be bent to a preset angle toward the side away from the light-emitting surface to reduce its rebound, thereby reducing the extrusion interference between the flexible display module 2 and the step portion of the cover plate 3, thereby reducing the probability of damage to the flexible display module 2 and improving the bonding quality of the flexible display module 2 and the cover plate 3.

[0048] In the above embodiment, the display area AA can be rectangular, circular, or other shapes, the bending area NA2 can be rectangular, and the binding area NA1 can be rectangular or other irregular shapes, etc., and this application does not specifically limit these shapes. The display area AA and the cover plate 3 can be bonded together by an adhesive layer 4, which can be an optical adhesive.

[0049] In one possible implementation, Figure 3 and Figure 4 As shown, the flexible display module 2 includes a flexible display panel 21, a polarizer 22, a curved protective layer 23, a first support film 24, a second support film 25, a flexible circuit board 26, a chip 27, etc., wherein the polarizer 22 is located on the side of the flexible display panel 21 facing the light-emitting surface, and is located partially in the display area AA, partially in the bending area NA2, and partially in the binding area NA1; the curved protective layer 23 is located on the side of the flexible display panel 21 facing the light-emitting surface, and is located in the display area AA; the first support film 24 is located on the side of the flexible display panel 21 away from the light-emitting surface, and is located partially in the display area AA and partially in the bending area NA2; the second support film 25 is located on the side of the flexible display panel 21 away from the light-emitting surface, and is located partially in the binding area NA1 and partially in the bending area NA2; the flexible circuit board 26 and the chip 27 are located on the side of the flexible display panel 21 facing the light-emitting surface, and are located in the binding area NA1.

[0050] The damage caused by the step portion to the flexible display panel 21 includes but is not limited to damage to the bending protection layer 23 , damage to the metal wire in the bending area NA2 , and the like.

[0051] In one possible implementation, Figure 1As shown, the bending retention part 102 and the main body part 101 have an integral structure. The bending retention part 102 includes a fixed end and a free end. The bending retention part 102 is integrally formed with the main body part 101 through the fixed end, and the free end is separably arranged from the main body part 101.

[0052] In the above embodiment, during the preparation process, a part of the main body part 101 can be cut to form the bending retention part 102. The bending retention part 102 and the main body part 101 have an integral structure, so that the structure of the guiding film 10 can be simplified, and the operation is more convenient during use. It only needs to fix the free end to the main body part 101 after bending.

[0053] In a feasible embodiment, as Figure 1 shown, the bending retention part 102 and the main body part 101 have an integral structure. The bending retention part 102 is arranged on the first sub - part 1011. The fixed end is the first end, and the free end is the second end. The second end of the bending retention part 102 is separably arranged from the second sub - part 1012.

[0054] In the above embodiment, the bending retention part 102 is integrally formed with and adjacent to the first sub - part 1011. At this time, the first end is integrally connected to the first sub - part 1011. When the main body part 101 is in a flat state, the second end is separated from the second sub - part 1012; when the main body part 101 is in a bent state, the second end can be fixed to the second sub - part 1012 to inhibit the spring - back tendency of the bent sub - part 1013, so that the bent state of the main body part 101 can be maintained.

[0055] In another feasible embodiment, as Figure 2 shown, the bending retention part 102 is arranged on the second sub - part 1012. The fixed end is the second end, and the free end is the first end. The first end of the bending retention part 102 is separably arranged from the first sub - part 1011.

[0056] In the above embodiment, the bending retention part 102 is integrally formed with and adjacent to the second sub - part 1012. At this time, the second end is integrally connected to the second sub - part 1012. When the main body part 101 is in a flat state, the first end is separated from the first sub - part 1011; when the main body part 101 is in a bent state, the first end can be fixed to the first sub - part 1011 to inhibit the spring - back tendency of the bent sub - part 1013, so that the bent state of the main body part 101 can be maintained.

[0057] In a feasible embodiment, the free end is fixed to the main body part 101 by adhesion.

[0058] The guide film 10 and the flexible display module 2 are bonded and fixed by adhesive material. At the same time, the free end and the main body 101 can be bonded and fixed by the above-mentioned adhesive material. The material is easy to obtain and easy to operate. The bonding position is not limited. The angle between the first section 1011 and the second section 1012 can be adjusted at will before bonding and fixing.

[0059] The adhesive material may be an optical adhesive (OCA), a thermal adhesive, an ultraviolet adhesive, or the like, and is not particularly limited in this application. Using a thermal adhesive or an ultraviolet adhesive facilitates debonding between the guide film 10 and the flexible display module 2 while minimizing damage to the flexible display module 2.

[0060] In one possible implementation, Figures 6 to 8 As shown, the second surface 1015 is provided with a first magnetic portion 103 , the free end is provided with a second magnetic portion 104 , and the free end is fixed to the main body 101 by magnetic attraction.

[0061] In the above embodiment, the free end is fixed to the main body 101 by magnetic attraction. Specifically, a first magnetic portion 103 can be provided on the second surface 1015 of the main body 101, and a second magnetic portion 104 can be provided on the free end. The first magnetic portion 103 and the second magnetic portion 104 cooperate with each other to achieve connection between the free end and the second surface 1015. The first magnetic portion 103 and the second magnetic portion 104 can be provided at the time of manufacture of the guide film 10. During the process of fixing the guide film 10 to the flexible display module 2, the first magnetic portion 103 and the second magnetic portion 104 can be directly fixed by magnetic attraction after the flexible display module 2 and the main body 101 are bent. This convenient fixing method does not require any other medium, which can greatly save operation time.

[0062] In a feasible embodiment, at least one of the first magnetic attraction portion 103 and the second magnetic attraction portion 104 is a magnet, and the other is made of a magnetic material. Specifically, the first magnetic attraction portion 103 and the second magnetic attraction portion 104 can be magnets with different magnetic properties, or one of the first magnetic attraction portion 103 and the second magnetic attraction portion 104 is a magnet and the other is iron, so that the first magnetic attraction portion 103 and the second magnetic attraction portion 104 can be magnetically fixed. The specific material of the first magnetic attraction portion 103 and the second magnetic attraction portion 104 is not particularly limited in this application.

[0063] In one possible implementation, Figures 6 to 8 As shown, the second magnetic portion 104 is a block-shaped structure disposed at the free end of the bent retaining portion 102 .

[0064] In the above embodiment, the second magnetic attraction portion 104 is a block structure and is only arranged at the free end of the bending retaining portion 102, which can prevent the area of the second magnetic attraction portion 104 from being too large and causing the fixing area between the bending retaining portion 102 and the second surface 1015 to be too large, thereby improving the effect of the bending retaining portion 102.

[0065] The block structure may be a circular block structure, a square block structure, etc., which is not particularly limited in this application. Specifically, a circular block structure means that the orthographic projection of the block structure on the bending holding portion 102 is a circle, and a square block structure means that the orthographic projection of the block structure on the bending holding portion 102 is a square.

[0066] In one possible implementation, Figure 6 As shown, the first magnetic portion 103 is a planar structure covering the second surface 1015, so that the second magnetic portion 104 can be fixed at any position of the second surface 1015, that is, the position maintained by the main body 101 after bending the preset angle is more diversified, that is, the range of preset angles that the guide film 10 can maintain is wider, so that the curved screen bonding device 1 can make the flexible display module 2 avoid steps of different heights, and has a wider range of applications.

[0067] In one possible implementation, Figure 7 As shown, the first magnetic portion 103 is a strip structure extending along the arrangement direction of the first section 1011, the second section 1012 and the bending section 1013. At this time, the second magnetic portion 104 can be fixed to the first magnetic portion 103 along the extension direction of the first magnetic portion 103, so that the position maintained by the main body 101 after bending the preset angle can be more diversified, that is, the range of preset angles that the guide film 10 can maintain is wider, so that the curved screen bonding device 1 can make the flexible display module 2 avoid steps of different heights, and has a wider range of applications. At the same time, it takes into account the area of the first magnetic portion 103 and saves the material of the first magnetic portion 103.

[0068] In one possible implementation, Figure 8 As shown, the first magnetic portion 103 is a block structure corresponding one-to-one to the second magnetic portion 104 .

[0069] In the above embodiment, a corresponding guide film 10 can be designed for different flexible display modules 2 and cover plates 3. The positions of the first magnetic portion 103 and the second magnetic portion 104 in the guide film 10 are determined. After direct magnetic fixation, the bending effect of the flexible display panel 21 can be fixed, and the operation is more convenient.

[0070] In one possible implementation, Figures 6 to 8As shown, there are two bending holding portions 102 , which are symmetrically arranged on both sides of the bending portion 1013 along the arrangement direction of the first portion 1011 , the second portion 1012 and the bending portion 1013 .

[0071] In the above embodiment, the bend-maintaining portion 102 can be formed by patterning the main body 101. Specifically, the main body 101 on both sides of the bend sub-portion 1013 can be patterned to form a strip-shaped bend-maintaining portion 102. The bend-maintaining portion 102 is directly connected to the first sub-portion 1011 or directly connected to the second sub-portion 1012. The bend-maintaining portion 102 and the bend sub-portion 1013 are indirectly connected via the first sub-portion 1011 or the second sub-portion 1012.

[0072] In the above embodiment, the bending retaining portion 102 is symmetrically arranged on both sides of the bending section 1013, so that the bending retaining portion 102 can provide symmetrical forces on the first section 1011 and the second section 1012 with respect to the bending section 1013, thereby reducing the deflection caused by the asymmetry of the forces, and making the bending protection portion have a better effect of retaining the bending of the main body 101.

[0073] In one possible implementation, Figure 9 As shown, the first end and the second end of the bending holding portion 102 are respectively detachably disposed from the main body portion 101 .

[0074] In the above embodiment, the bending retaining portion 102 and the main body portion 101 are two independent parts. During use, after the main body portion 101 is bent, the first end and the second end of the bending retaining portion 102 are respectively fixed to the second surface 1015 of the main body portion 101. Specifically, the first end is fixed to the portion of the second surface 1015 located in the first division 1011, and the second end is fixed to the portion of the second surface 1015 located in the second division 1012.

[0075] In one possible implementation, Figure 10 As shown, the bending section 1013 has a thinning area 105 , which includes an opening penetrating the bending section 1013 along the thickness direction of the bending section 1013 , and / or the thinning area includes a groove sunken along the thickness direction of the bending section 1013 .

[0076] In the above embodiment, the thinning area 105 is provided in the bending section 1013 to improve the flexibility of the bending section 1013 , so that the bending section 1013 is easier to bend.

[0077] In a feasible implementation manner, the orthographic projection of the groove on the bending part 1013 covers the bending part 1013. That is, by thinning the entire bending part 1013 relative to the first part 1011 and the second part 1012, the bending center of the bending part 1013 is matched with the bending area NA2 of the flexible display module 2, further reducing the hindrance effect of the guiding film 10 when bending the flexible display module 2.

[0078] As Figure 11 and Figure 12 shown, the curved screen laminating device 1 provided by the present application further includes an adsorption component 5, a clamping component 8, a stage 7, and a profiling pressing head 6; the adsorption component is used for adsorbing the cover plate 3, and the step portion of the cover plate 3 protrudes toward the side away from the adsorption component; the clamping component is located on the side of the cover plate 3 away from the adsorption component, and the clamping component is used for clamping the guiding film 10; the stage 7 is located on the side of the guiding film 10 away from the flexible display module 2, the profiling pressing head 6 is located on the side of the stage close to the guiding film 10, and the stage 7 is used to drive the profiling pressing head 6 to press the flexible display module 2 onto the cover plate 3 from the side of the guiding film 10 away from the flexible display module 2, so that the flexible display module 2 and the curved cover plate 3 are laminated.

[0079] The present application also provides a method for laminating a curved screen, which is used to laminate the flexible display module 2 and the cover plate 3. The flexible display module 2 includes a display area AA, a bonding area NA1, and a bending area NA2 located between the display area AA and the bonding area NA1. The cover plate 3 includes a flat portion and a step portion. 31 The display area AA of the flexible display module 2 is laminated with the flat portion, and the bending area NA2 of the flexible display module 2 is bent toward the side away from the light-emitting surface, so that the bonding area NA1 is received on the side of the display area AA away from the flat portion, so that the flexible display module 2 is received in the accommodation space formed by the flat portion and the step portion.

[0080] As Figure 12 shown, the laminating method provided by the present application includes:

[0081] S100, fixing the flexible display module 2 to the first surface 1014 of the guiding film 10, including fixing the display area AA to the first part 1011 of the guiding film 10, fixing the bonding area NA1 to the second part 1012 of the guiding film 10, and aligning the bending area NA2 with the bending part 1013.

[0082] Among them, the flexible display module 2 includes a flexible display panel 21, a polarizer 22, a bending protection layer 23, a first support film 24, a second support film 25, a flexible circuit board 26, a chip 27, etc. The first part 1011 is fixed on the side of the first support film 24 of the flexible display module 2 facing away from the light-emitting surface, the second part 1012 is fixed on the side of the second support film 25 facing away from the light-emitting surface, the bending part 1013 faces the gap between the first support film 24 and the second support film 25, and the bending part 1013 does not contact the bending area NA2 of the flexible display module 2.

[0083] S200, bend the bending part 1013 of the guiding film 10 by a preset angle toward the side away from the first surface 1014, so that the body part 101 of the guiding film 10 is in a bent state.

[0084] Among them, the preset angle is the angle at which the guiding film 10 and the flexible display module 2 are bent toward the side away from the light-emitting surface, and when the flexible display module 2 and the flat part are attached, the bending area NA2 and the bonding area NA1 avoid the step part, reducing the probability of the bending area NA2 and the bonding area NA1 contacting the step part during the attachment process, and reducing the interference between the bending area NA2 and the bonding area NA1 and the step part and affecting the yield of the flexible display module 2.

[0085] S300, connect the first end of the bending holding part 102 of the guiding film 10 to the first part 1011, and connect the second end of the bending holding part 102 to the second part 1012. The bending holding part 102 can provide a force for the first part 1011 and the second part 1012, so that the body part 101 is kept in a bent state and prevents the flexible display module 2 from contacting the step part.

[0086] S400, attach the display area AA of the flexible display module 2 to the flat part.

[0087] Specifically, attach the side of the display area AA of the flexible display module 2 facing the light-emitting surface to the side of the flat part facing the step part through an optically clear adhesive (OCA).

[0088] S500, separate the flexible display module 2 from the guiding film 10, and bend the bending area NA2 of the flexible display module 2 toward the side away from the cover plate 3, so that the bonding area NA1 is bent to the side of the display area AA facing away from the light-emitting surface.

[0089] In the curved screen bonding method provided in the present application, the guide film 10 is bonded to the side of the flexible display module 2 facing away from the light-emitting surface. Before bonding, the bending area NA2 of the flexible display module 2 is pre-bent to avoid the step portion during bonding, and the shape of the bent flexible display module 2 is maintained by the guide film 10, thereby reducing the shaking of the bending area NA2 and the binding area NA1 of the flexible display module 2 during the movement process and the bonding process, thereby reducing the damage of the flexible display module 2 due to squeezing by the step portion.

[0090] While the embodiments described above are not exhaustive, they do not limit the invention to specific embodiments. Clearly, numerous modifications and variations are possible based on the above description. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better utilize the present invention and its modifications. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A curved screen laminating device, characterized in that, Comprising a guiding film for attaching to a flexible display module and changing the shape of the flexible display module, the guiding film includes: A main body portion, the main body portion includes a first branch portion, a second branch portion, and a bending branch portion connected between the first branch portion and the second branch portion. The main body portion has a first surface and a second surface oppositely arranged in its own thickness direction. The first surface is used to support the flexible display module, and the bending branch portion can bend toward the side away from the first surface to make the main body portion in a bent state; A bending holding portion, including a first end and a second end. The first end and / or the second end is / are detachably arranged with the main body portion. The first end is used to connect with the first branch portion, and the second end is used to connect with the second branch portion. The bending holding portion provides a force for the first branch portion and the second branch portion to keep the main body portion in the bent state. After bending the bending branch portion of the guiding film toward the side away from the first surface by a preset angle to make the main body portion of the guiding film in a bent state, connect the end of the bending holding portion separated from the main body portion with the main body portion.

2. The curved screen laminating device according to claim 1, wherein The bending holding portion and the main body portion have an integral structure. The bending holding portion includes a fixed end and a free end. The bending holding portion is integrally formed with the main body portion through the fixed end, and the free end is detachably arranged with the main body portion.

3. The curved screen laminating device according to claim 2, wherein The bending holding portion is arranged on the first branch portion, the fixed end is the first end, and the free end is the second end. The second end of the bending holding portion is detachably arranged with the second branch portion; or, the bending holding portion is arranged on the second branch portion, the fixed end is the second end, and the free end is the first end. The first end of the bending holding portion is separated from the first branch portion.

4. The curved screen laminating device according to claim 2, wherein The free end and the main body portion are fixed by bonding.

5. The curved screen laminating device according to claim 2, wherein A first magnetic attracting portion is arranged on the second surface, and a second magnetic attracting portion is arranged on the free end. The free end and the main body portion are fixed by magnetic attraction.

6. The curved screen laminating device according to claim 5, wherein, At least one of the first magnetic attracting portion and the second magnetic attracting portion is a magnet, and the other is formed by a magnetic material; The second magnetic attracting portion is a block structure arranged at the free end of the bending holding portion; The first magnetic attracting portion is a planar structure covering the second surface, or a strip structure extending along the arrangement direction of the first branch portion, the second branch portion, and the bending branch portion, or a block structure corresponding to the second magnetic attracting portion one by one.

7. The curved screen laminating device according to claim 2, wherein The number of the bending holding portions is two, and they are symmetrically arranged on both sides of the bending branch portion along the arrangement direction of the first branch portion, the second branch portion, and the bending branch portion.

8. The curved screen laminating device according to claim 1, wherein The first end and the second end of the bending holding portion are respectively detachably arranged with the main body portion.

9. The curved screen laminating device according to claim 1, wherein, The bending branch portion has a thinning area, and the thinning area includes an opening penetrating the bending branch portion along the thickness direction of the bending branch portion, and / or, the thinning area includes a groove recessed along the thickness direction of the bending branch portion.

10. The curved screen laminating device according to claim 9, wherein, The positive projection of the groove on the bending branch portion covers the bending branch portion.

11. A method for attaching a curved screen, which is used to attach a flexible display module to a cover plate. The flexible display module includes a display area, a bonding area, and a bending area located between the display area and the bonding area. The cover plate includes a flat portion and a stepped portion, and is characterized in that, The attaching method includes: Fix the flexible display module to the first surface of the guiding film, including fixing the display area to the first part of the guiding film, fixing the bonding area to the second part of the guiding film, and aligning the bending area with the bending part of the guiding film; Bend the bending part of the guiding film by a preset angle away from the first surface, so that the body part of the guiding film is in a bent state; Connect the first end of the bending holding part of the guiding film to the first part, and connect the second end of the bending holding part to the second part. The bending holding part provides a force for the first part and the second part, so that the body part is kept in the bent state and prevents the flexible display module from contacting the step part; Bond the display area of the flexible display module to the flat part; Separate the flexible display module from the guiding film, and bend the bending area of the flexible display module away from the cover plate, so that the bonding area is bent to the side of the display area away from the light-emitting surface.

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