A composite protection structure and its usage method

Abstract

The present invention discloses a composite protection structure and a method for using the same. The composite protection structure is used to protect a flexible display module, and the flexible display module includes a display function layer. The display function layer includes a light-emitting surface, a backlight surface, and a side surface. The light-emitting surface is opposite to the backlight surface, and the side surface is adjacent to the light-emitting surface and the backlight surface. The composite protection structure includes: a composite protection film and a support structure; the support structure is located on the side surface; the first end of the composite protection film is fixed to the support structure, and the second end of the composite protection film extends and is fixed to the backlight surface side of the display function layer. By adopting the above technical solution, the backlight surface and the side surface of the flexible display module can be protected, and the backlight surface and the side surface can be prevented from being damaged when the flexible display module is subsequently tested or taken, so that the flexible display module does not display abnormally. In addition, the manufacturing process of the composite protection structure is simple and the cost is low; moreover, the hardness of the composite protection film is small, and the appearance of the flexible display module is not affected during the pasting process.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a composite protection structure and a method for using the same. Background Art

[0002] With the continuous development of display technologies, border narrowing has become a trend for display modules. The increasingly narrow border makes the distance from the flexible display module to the edge of the cover plate smaller and smaller, which increases the possibility of the display module being bumped during handling and assembly. Especially in the structure of a flexible display module, its bending area and bonding area are very fragile, and protective measures for this area are particularly important. Summary of the Invention

[0003] The present invention provides a composite protection structure and a method for using the same to protect the bending area and bonding area of a flexible display module.

[0004] According to one aspect of the present invention, there is provided a composite protection structure for protecting a flexible display module. The flexible display module includes a display function layer, the display function layer includes a light-emitting surface, a backlight surface, and a side surface. The light-emitting surface is opposite to the backlight surface, and the side surface is adjacent to the light-emitting surface and the backlight surface. The composite protection structure includes: a composite protection film and a support structure;

[0005] The support structure is located on the side surface; a first end of the composite protection film is fixed to the support structure, and a second end of the composite protection film extends and is fixed to the backlight surface side of the display function layer.

[0006] According to another aspect of the present invention, there is provided a method for using a composite protection structure for protecting a flexible display module. The flexible display module includes a display function layer, the display function layer includes a light-emitting surface, a backlight surface, and a side surface. The light-emitting surface is opposite to the backlight surface, and the side surface is adjacent to the light-emitting surface and the backlight surface. The method for using the composite protection structure includes:

[0007] Providing the composite protection structure;

[0008] Placing the support structure of the composite protection structure on the side surface of the display function layer, and extending and fixing the second end of the composite protection film in the composite protection structure to the backlight surface side of the display function layer.

[0009] The composite protection structure according to the embodiments of the present invention can protect the backlight surface and the side surface of the flexible display module, avoiding damage to the backlight surface and the side surface during subsequent tests or when handling the flexible display module, and abnormal display of the flexible display module; the composite protection structure is composed of a composite protection film and a support structure, making the manufacturing process of the composite protection structure simple and the cost low; in addition, the composite protection film in the composite protection structure is attached to the backlight surface side of the display functional layer, and the hardness of the composite protection film is small, and it does not affect the appearance of the flexible display module during the attachment process.

[0010] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0012] Figure 1 It is a schematic structural diagram of a bracket protection structure in the prior art;

[0013] Figure 2 It is a schematic structural diagram of a composite protection structure provided by an embodiment of the present invention;

[0014] Figure 3 It is a schematic structural diagram of a flexible display module provided by an embodiment of the present invention;

[0015] Figure 4 It is a schematic structural diagram of a composite protection structure protecting a flexible display module provided by an embodiment of the present invention;

[0016] Figure 5 It is a top view structural diagram of a composite protection structure to a buffer structure provided by an embodiment of the present invention;

[0017] Figure 6 It is a schematic diagram of the relative position relationship between a composite protection structure and a buffer structure provided by an embodiment of the present invention;

[0018] Figure 7 It is a schematic structural diagram of another composite protection structure provided by an embodiment of the present invention;

[0019] Figure 8 It is a top view structural diagram of another composite protection structure to a buffer structure provided by an embodiment of the present invention;

[0020] Figure 9 Schematic diagram of another composite protection structure provided by an embodiment of the present invention;

[0021] Figure 10 Schematic diagram of another composite protection structure provided by an embodiment of the present invention;

[0022] Figure 11 Schematic diagram of another composite protection structure provided by an embodiment of the present invention;

[0023] Figure 12 Flow chart of a method for using a composite protection structure provided by an embodiment of the present invention;

[0024] Figure 13 Flow chart of another method for using a composite protection structure provided by an embodiment of the present invention;

[0025] Figure 14 Flow chart of another method for using a composite protection structure provided by an embodiment of the present invention;

[0026] Figure 15 Schematic diagram of another flexible display module provided by an embodiment of the present invention. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] Figure 1 Schematic diagram of a bracket protection structure in the prior art, refer to Figure 1, after the conductive cloth is pasted on the bonding area of the flexible display module 02, the support protection structure 01 is attached to prevent the bending area and the bonding area from being damaged when the flexible display module 02 is subsequently tested or taken, resulting in abnormal display of the flexible display module 02.

[0030] However, the support protection structure 01 is an injection molded part that needs to be adapted to the flexible display module 02, and requires mold opening for production. The mold opening and mold repair cycles are long and the cost is high. Moreover, after the flexible display module 02 is prepared, the support protection structure 01 needs to be attached by a separate process. The material of the support protection structure 01 is generally hard, and when attaching, the equipment needs to have a downward pressure to ensure that the support protection structure 01 can be fixed on the back of the flexible display module 02. The downward pressure will squeeze the copper foil and foam (not shown in the figure) of the flexible display module 02, etc. The copper foil has a hard material and the foam has a soft material, and the material difference will cause imprints and bulges in the area under pressure, affecting the appearance of the flexible display module.

[0031] To solve the above technical problems, an embodiment of the present invention provides a composite protection structure for protecting a flexible display module. The flexible display module includes a display function layer, and the display function layer includes a light-emitting surface, a backlight surface, and a side surface. The light-emitting surface is opposite to the backlight surface, and the side surface is adjacent to the light-emitting surface and the backlight surface. The composite protection structure includes a composite protection film and a support structure; the support structure is located on the side surface; the first end of the composite protection film is fixed to the support structure, and the second end of the composite protection film extends and is fixed to the backlight surface side of the display function layer.

[0032] By adopting the above technical solution, the backlight surface and the side surface of the flexible display module can be protected, avoiding damage to the backlight surface and the side surface when the flexible display module is subsequently tested or taken, and abnormal display of the flexible display module; the composite protection structure is composed of a composite protection film and a support structure, making the manufacturing process of the composite protection structure simple and the cost low; in addition, the composite protection film in the composite protection structure is attached to the backlight surface side of the display function layer, and the hardness of the composite protection film is small, and it does not affect the appearance problem of the flexible display module during the attachment process.

[0033] The above is the core idea of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. Hereinafter, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Figure 2 It is a schematic structural diagram of a composite protection structure provided by an embodiment of the present invention. Figure 3 It is a schematic structural diagram of a flexible display module provided by an embodiment of the present invention. Figure 4 It is a schematic structural diagram of a composite protection structure protecting a flexible display module provided by an embodiment of the present invention. Refer toFigures 2 - 4 , the flexible display module 100 includes a display function layer 110. The display function layer 110 includes a light-emitting surface 101, a backlight surface 102, and a side surface 103. The light-emitting surface 101 is opposite to the backlight surface 102, and the side surface 103 is adjacent to the light-emitting surface 101 and the backlight surface 102. The composite protection structure 10 includes a composite protection film 11 and a support structure 12; the support structure 12 is located on the side surface 103, the first end 21 of the composite protection film 11 is fixed to the support structure 12, and the second end 22 of the composite protection film 11 extends and is fixed to the side of the backlight surface 102 of the display function layer 110.

[0035] Exemplarily, the display function layer 110 includes a flat area, a bonding area, and a bending area (not shown in the figure). The flat area and the bonding area are connected by the bending area. When the flexible display module 100 is in a bent state, the flat area and the bonding area are opposite to each other. The light-emitting surface 101 is located on the side of the flat area away from the bonding area, and the backlight surface 102 is located on the side of the bonding area away from the flat area. The flexible display module 100 further includes a first backplane 121, a second backplane 122, a first heat dissipation and buffer layer 131, a second heat dissipation and buffer layer 132, an adhesive 140, a cover plate 150, and a polarizer 160; wherein, the first backplane 121 is located on the side of the flat area of the display function layer 110 away from the light-emitting surface 101, and the second backplane 122 is located on the side of the bonding area of the display function layer 110 away from the backlight surface 102; the first heat dissipation and buffer layer 131 is located on the side of the first backplane 121 away from the light-emitting surface 101, the second heat dissipation and buffer layer 132 is located on the side of the second backplane away from the backlight surface 102, and the adhesive 140 is located between the first heat dissipation and buffer layer 131 and the second heat dissipation and buffer layer 132; the polarizer 160 is located on the side of the light-emitting surface 101 of the display function layer 110, and the cover plate 150 is located on the side of the polarizer 160 away from the display function layer 110. Among them, taking the flexible display module 100 as an OLED flexible module as an example, the display function layer 110 includes an organic light-emitting layer and a driving circuit layer (not shown in the figure). The organic light-emitting layer includes organic light-emitting diodes, and the driving circuit layer includes active or passive devices such as capacitors, resistors, and transistors. It can be understood that when the bendable display screen is other flexible display screens, the structure of the display function layer 110 will also change accordingly. The embodiments of the present invention do not limit the specific type of the bendable display screen.

[0036] The first backplane 121 and the second backplane 122 can respectively support the display function layer 110 in the flat area and the display function layer 110 in the bonding area. The first heat dissipation buffer layer 131 and the second heat dissipation buffer layer 132 include, but are not limited to, foam, heat dissipation layer, etc., and can respectively protect the display function layer 110, relieve internal stress, and release the heat generated inside, so as to extend the service life of the light-emitting elements in the display function layer 110. The adhesive 140 can bond the first heat buffer layer 131 and the second heat dissipation buffer layer 132 to fix the display function layer 110, so that the flexible display module 100 is in a bent state. A support plate (not shown in the figure) can also be provided between the first heat dissipation buffer layer 131 and the second heat dissipation buffer layer 132. The support plate can support the display function layer 110 in the flat area and the display function layer 110 in the bonding area, and relieve the bending stress of the display function layer 110 in the bending area. The polarizer 160 can improve the light output rate of the display function layer 110 and reduce reflection, improving the display effect. A touch layer (not shown in the figure) can also be provided between the cover plate 150 and the polarizer 160. The cover plate 150 includes, but is not limited to, a glass cover plate with high light transmittance, which can protect the display function layer 110 and the touch layer from being scratched and damaged easily.

[0037] Continue to refer to Figures 2 - 4 , the composite protective film 11 and the support structure 12 can be of the same material and integrally formed, or they can be of different materials. When the composite protective film 11 and the support structure 12 are of different materials, before attaching the composite protection structure 10 to the flexible display module 100, the support structure 12 can be first fixed to the first end 21 of the composite protective film 11, and then in the same process, the composite protective film 11 and the support structure 12 are simultaneously attached to the flexible display module 100. The composite protective film 11 is located on one side of the backlight surface 102 of the display function layer 110, and can protect the backlight surface 102 side of the display function layer 110 to prevent the backlight surface 102 of the display function layer 110 from being knocked during subsequent tests or handling; the support structure 12 is located on the side surface 103 of the display function layer 110. The thickness d2 of the support structure 12 in the first direction X can be slightly greater than the thickness d1 of the display function layer 110 in the first direction X. The support structure 12 can play a certain supporting role for the composite protective film 11, and at the same time, can protect the side surface 103 of the display function layer 110 from being damaged. Among them, the first direction X is the thickness direction of the flexible display module 100.

[0038] Optionally, the composite protective film 11 may include film layers made of materials such as PET films and silicone films, which have good impact resistance and folding resistance and can play a role in damping and buffering external forces. The support structure 12 may include materials such as rubber with less deformation under force, which has good load-bearing capacity and less deformation when subjected to external forces. When subjected to external forces, it can still support the composite protective film 11 near the bending area and protect the side surface 103 from being damaged.

[0039] The composite protection structure provided by the embodiments of the present invention can protect the backlight surface and the side surface of the flexible display module, avoiding damage to the backlight surface and the side surface and abnormal display of the flexible display module during subsequent testing or handling of the flexible display module. The composite protection structure is composed of a composite protective film and a support structure, making the manufacturing process of the composite protection structure simple and the cost low. In addition, the composite protective film in the composite protection structure is attached to the backlight surface side of the display function layer, and the hardness of the composite protective film is small, and it does not affect the appearance of the flexible display module during the attachment process.

[0040] Optionally, Figure 5 FIG. is a schematic top view structure diagram of a composite protection structure to a buffer structure provided by an embodiment of the present invention, Figure 6 FIG. is a schematic diagram of the relative positional relationship between a composite protection structure and a buffer structure provided by an embodiment of the present invention. Refer to Figure 5 and Figure 6 , the flexible display module 100 further includes a buffer structure 170. The buffer structure 170 is located on the backlight surface 102 side of the display function layer 110, and the second end 22 of the composite protective film 11 is attached to the buffer structure 170.

[0041] Exemplarily, the buffer structure 170 includes a foam protective layer. After the flexible display module 100 is prepared, the buffer structure 170 can be attached to one side of the backlight surface 102 of the flexible display module 100, which can play a role in buffering and damping during the subsequent transportation of the flexible display module 100. The buffer structure 170 can be attached to one side of the backlight surface 102 of the flexible display module 100 prior to the composite protection structure 10, and the composite protection structure 10 is attached after the buffer structure 170 is attached. When attaching the composite protection structure 10, the second end 22 of the composite protective film 11 can be attached to the side of the buffer structure 170 away from the display function layer 110. In the first direction X, the second end 22 of the composite protective film 11 overlaps with the buffer structure 170, and the second end 22 of the composite protective film 11 and the buffer structure 170 can be fixed by adhesive. When the buffer structure 170 is peeled off after transporting or testing the flexible display module 100, the composite protection structure 10 can be peeled off together. In this way, there is no need to add an additional process of peeling off the composite protection structure 10, which can reduce the process and lower the cost.

[0042] Optionally, Figure 7A schematic structural diagram of another composite protective structure provided by an embodiment of the present invention is shown. Figure 8 This is another schematic diagram of a top view of a composite protective structure to a buffer structure provided by an embodiment of the present invention. Figure 7 and Figure 8 The composite protective structure 10 further includes a conductive layer 13, which is located on the side of the composite protective film 11 near the display function layer 110. The backlight surface 102 side of the display function layer 110 includes a binding area. In the thickness direction of the flexible display module 100, the conductive layer 13 overlaps the binding area, and the conductive layer 13 does not overlap with the buffer structure 170.

[0043] Exemplarily, the conductive layer 13 and the support structure 12 are both located on the surface of the same side of the composite protective film 11. The conductive layer 13 and the composite protective film 11 can be fixed with adhesive. The conductive layer 13 can be attached to the backlight surface 102 side of the flexible display module 100 together with the composite protective film 11. The binding area on the backlight surface 102 side of the display function layer 110 includes a drive circuit layer. When attached to the backlight surface 102 side of the flexible display module 100, the conductive layer 13 can overlap with the binding area. The conductive layer 13 has the functions of signal shielding and static electricity conduction, which can prevent static electricity from being generated when the flexible display module 100 is subsequently picked up or transported, thereby preventing active or passive components such as capacitors, resistors, and transistors in the drive circuit layer of the display function layer 110 from being damaged by static electricity. In this way, the composite protective film 11 can be attached to the backlight surface 102 side of the flexible display module 100 in the same process as the conductive layer 13, reducing the number of steps, simplifying the process, and reducing costs.

[0044] Optional, Figure 9 A schematic diagram of another composite protective structure provided by an embodiment of the present invention is provided. Figure 9 The composite protective structure 10 also includes a first adhesive layer 41 and a second adhesive layer 42. The first adhesive layer 41 is located on the surface of the conductive layer 13 facing away from the composite protective film 11, and the second adhesive layer 42 is located on the surface of the composite protective film 11 close to the conductive layer 13; wherein the viscosity of the first adhesive layer 41 is greater than the viscosity of the second adhesive layer 42.

[0045] Exemplarily, the conductive layer 13 and the composite protective film 11 are fixed through the second adhesive layer 42. When the composite protection structure 10 is attached to the flexible display module 100, the conductive layer 13 can be fixed in the bonding area on the backlight surface 102 side through the first adhesive layer 41; when the composite protection structure 10 is peeled off, since the adhesiveness of the first adhesive layer 41 is greater than that of the second adhesive layer 42, the composite protective film 11 and the support structure 12 are separated from the flexible display module 100, and the conductive layer 13 remains in the bonding area on the backlight surface 102 side. The conductive layer 13 can play a role in signal shielding and static electricity conduction during the subsequent use of the flexible display module 100. The flexible display module 100 may also include a conductive layer 13 located in the bonding area on the backlight surface 102 side, which plays a role in signal shielding and static electricity conduction. When attaching the conductive layer 13 to the backlight surface 102 side of the flexible display module 100, the composite protection structure 10 can be attached to the flexible display module 100 simultaneously in the same process, which can simplify the attachment process of the composite protection structure 10 and save processing costs.

[0046] Exemplarily, Figure 10 is a schematic structural diagram of another composite protection structure provided by an embodiment of the present invention. Refer to Figure 10 , the second adhesive layer 42 may have the same size as the composite protective film 11, the first adhesive layer 41 may have the same size as the conductive layer 13, the length of the composite protective film 11 in the second direction Y is greater than the length of the conductive layer 13 in the second direction Y, the conductive layer 13 may be attached to the middle area of the second adhesive layer, and the second direction Y is parallel to the light-emitting surface 101 of the display function layer 110. The second adhesive layer 42 in the first end 21 area can bond and fix the support structure 12, and the second adhesive layer 42 in the second end 22 area can bond and fix the second end 22 of the composite protective film 11 to the buffer structure 170 when attaching the composite support structure 10. Since the adhesiveness of the first adhesive layer 41 is greater than that of the second adhesive layer 42, when peeling off the buffer structure 170, the composite protection structure 10 can be peeled off together, and the conductive layer 13 remains on the backlight surface 102 side of the flexible display module 100.

[0047] Optionally, Figure 11 is a schematic structural diagram of another composite protection structure provided by an embodiment of the present invention. Refer to Figure 11 , the support structure 12 includes a first support portion 51 and a second support portion 52. The first support portion 51 is located on the side of the second support portion 52 away from the display function layer 110; the thickness d3 of the first support portion 51 in the first direction X is greater than the thickness d4 of the second support portion 52 in the first direction X, where the first direction X is the thickness direction of the flexible display module 100. The flexible display module 100 further includes a cover plate 150 on the light-emitting surface 101 side of the display function layer 110, and the first support portion 51 is used to support the cover plate 150.

[0048] Exemplarily, the first support portion 51 is located on the side of the cover plate 150. The thickness d3 of the first support portion 51 in the first direction X can be slightly greater than the thickness of the flexible display module 100, which can support the cover plate 150. On the one hand, it can prevent the edge area of the cover plate 150 from bending along the first direction X, and on the other hand, it can also prevent the side of the cover plate 150 from being knocked when the flexible display module 100 is tested or taken later.

[0049] Optionally, continuing to refer to Figure 11 , in the second direction Y, the distance between the cover plate 150 and the first support portion 51 is L1; the distance between the second support portion 52 and the display function layer 110 is L2; wherein, L2 > L1, and the second direction Y is parallel to the light-emitting surface 101.

[0050] Exemplarily, the first support portion 51 and the second support portion 52 can be made of the same material and integrally formed, or they can also be fixed by adhesives, glue, etc. The distance L2 between the second support portion 52 and the display function layer 110 can be at least 0.4 mm smaller than the distance L1 between the cover plate 150 and the first support portion 51, which can avoid the situation that the second support portion 52 squeezes and touches the side surface 103 of the display function layer 110.

[0051] According to the composite protection structure provided by the embodiments of the present invention, the embodiments of the present invention also propose a method for using the composite protection structure for protecting a flexible display module, such as Figure 3 shown, the flexible display module 100 includes a display function layer 110. The display function layer 110 includes a light-emitting surface 101, a backlight surface 102, and a side surface 103. The light-emitting surface 101 is opposite to the backlight surface 102, and the side surface 103 is adjacent to the light-emitting surface 101 and the backlight surface 102. Figure 12 This is a flowchart of a method for using a composite protection structure provided by an embodiment of the present invention. Referring to Figure 12 , the method for using includes:

[0052] S110: Provide a composite protection structure.

[0053] Wherein, the composite protection structure includes a composite protection film and a support structure, and can be the composite protection structure provided by any embodiment of the present invention.

[0054] S120: Place the support structure of the composite protection structure on the side of the display function layer, and extend and fix the second end of the composite protection film in the composite protection structure to the backlight surface side of the display function layer.

[0055] Exemplarily, referring to Figure 2, the composite protective film 11 and the support structure 12 can be made of the same material and integrally formed, or they can be made of different materials. When the composite protective film 11 and the support structure 12 are made of different materials, before attaching the composite protection structure 10 to the flexible display module 100, the support structure 12 can be first fixed to the first end 21 of the composite protective film 11. Secondly, attach the prepared composite protection structure 10 to the flexible display module 100. When attaching the composite protection structure 10, the support structure 12 can be first placed on the side of the display function layer 110. In this way, the position of the first end 21 of the composite protective film 11 can be fixed, that is, the starting position where the composite protective film 11 is attached to the backlight surface 102 side of the flexible display module 100 is fixed, avoiding deviation in the starting position where the composite protective film 10 is attached to the backlight surface 102 side of the flexible display module 100, resulting in incorrect attachment position, and the support structure 12 touching or squeezing the side of the display function layer 110. After placing the support structure 12 on the side 103 of the display function layer 110, the composite protective film 11 can be gradually attached to the backlight surface 102 of the flexible display function layer 110 along the first direction X, where the first direction is the direction from the first end 21 to the second end 22 of the composite protection structure 10. In this way, bubbles, wrinkles and other defects of the composite protective film 11 can be avoided.

[0056] The usage method of the composite protection structure implemented in the present invention can protect the backlight surface and side surfaces of the flexible display module by using the composite protection structure provided in any embodiment of the present invention, avoiding damage to the backlight surface and side surfaces during subsequent testing or handling of the flexible display module, abnormal display of the flexible display module, and the manufacturing process is simple and the cost is low; the hardness of the composite protective film is small, and it is not easy to cause appearance problems of the flexible display module during the attachment process; when attaching the composite protection structure, first place the support structure on the side of the display function layer, and then extend and fix the second end of the composite protective film in the composite protection structure to the backlight surface side of the display function layer, which can avoid incorrect attachment position when attaching the composite protective film first, the support structure touching or squeezing the side of the display function layer, and can also avoid defects such as bubbles and wrinkles in the composite protective film.

[0057] Optionally, the composite protection structure is only used to protect the flexible display module after the flexible display module is prepared and before the flexible display module is assembled into the display device, avoiding damage to the backlight surface and side surfaces during testing or handling of the flexible display module. Before the flexible display module is assembled into the display device, the composite protection structure needs to be removed. Figure 13 For the flowchart of another usage method of the composite protection structure provided by the embodiments of the present invention, refer to Figure 13 , the usage method includes:

[0058] S210. Provide the composite protection structure.

[0059] S220. Place the support structure of the composite protection structure on the side of the display function layer, and extend and fix the second end of the composite protective film in the composite protection structure to the backlight side of the display function layer.

[0060] S230. Peel the composite protection structure from the flexible display module.

[0061] Exemplarily, referring to Figure 4 , when peeling the composite protection structure 10 from the flexible display module 100, it can start peeling from the second end 22 of the composite protective film 11. When peeling to the first end 21 of the composite protective film 11, the first end 21 drives the support structure 12 to peel off. In this way, when peeling the composite protection structure 10, the support structure 12 can be prevented from colliding with the side 103 of the display function layer 110.

[0062] Optionally, the flexible display module further includes a buffer structure; the buffer structure is located on the backlight side; Figure 14 It is a flowchart of another method for using the composite protection structure provided by the embodiment of the present invention. Referring to Figure 14 , the method for use includes:

[0063] S310. Provide a composite protection structure.

[0064] S320. Place the support structure of the composite protection structure on the side of the display function layer, and extend and attach the second end of the composite protective film in the composite protection structure to the side of the buffer structure facing away from the display function layer.

[0065] S330. Peel the buffer structure from the side away from the support structure, so that the buffer structure drives the composite protective film and the support structure to peel off from the flexible display module.

[0066] Exemplarily, referring to Figure 5 and Figure 6 , when attaching the composite protection structure 10, the second end 22 of the composite protective film 11 can be attached to the side of the buffer structure 170 away from the display function layer 110. In the first direction X, the second end 22 of the composite protective film 11 overlaps with the buffer structure 170. The second end 22 of the composite protective film 11 and the buffer structure 170 can be directly in contact and fixed by adhesive. After transporting or testing the flexible display module 100, it is necessary to peel off the buffer structure 170 and the composite protection structure 10. When peeling off the buffer structure 170, the composite protection structure 10 can be peeled off together. In this way, there is no need to add an additional process for peeling off the composite protection structure 10, which can reduce the process and cost.

[0067] Optionally, the composite protection structure further includes a conductive layer; the conductive layer is located on the side of the composite protective film close to the display function layer, such as Figure 7As shown in the figure; the backlight surface 102 side of the display function layer 110 includes a bonding area (not shown in the figure); in the thickness direction of the flexible display module, the conductive layer 13 overlaps with the bonding area, and the conductive layer 13 and the buffer structure 170 do not overlap with each other, as Figure 8 shown; when the buffer structure 170 drives the composite protective film 11 and the support structure 12 to peel off from the flexible display module 100, the conductive layer 13 remains on the backlight surface 102 side of the display function layer 110, as Figure 15 shown.

[0068] Exemplarily, the conductive layer 13 can be attached to the backlight surface 102 side of the flexible display module 100 together with the composite protective film 11. When the composite protective film 11 and the support structure 12 are separated from the flexible display module 100, the conductive layer 13 will remain in the bonding area on the backlight surface 102 side. The conductive layer 13 can play the roles of signal shielding and static conduction in the subsequent use of the flexible display module 100. The composite protective film 11 and the conductive layer 13 can be attached to the backlight surface 102 side of the flexible display module 100 in the same process, reducing the process, with a simple manufacturing process and low cost. When peeling off the buffer structure 170, the composite protection structure 10 can be peeled off together, without the need to add an additional process for peeling off the composite protection structure 10, which can further reduce the process and cost.

[0069] The usage method of the composite protection structure provided by the embodiments of the present invention is to use the composite protection structure provided by any embodiment of the present invention to protect the flexible display module, with the corresponding technical features and beneficial effects of the composite protection structure. The content not described in detail in the embodiments of the usage method of the composite protection structure can be referred to the above description of the composite protection structure and will not be elaborated here; similarly, the composite protection structure of the embodiments of the present invention also has the functional modules and beneficial effects capable of implementing the usage method of the composite protection structure provided by the embodiments of the present invention. The content not described in detail in the embodiments of the composite protection structure can be referred to the above description of the usage method of the composite protection structure and will not be elaborated here.

[0070] Note that the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A composite protection structure for protecting a flexible display module, characterized in that, The flexible display module includes a display functional layer, the display functional layer includes a light-emitting surface, a backlight surface and a side surface, the light-emitting surface is opposite to the backlight surface, and the side surface is adjacent to the light-emitting surface and the backlight surface; The composite protection structure includes: a composite protection film and a support structure; The support structure is located on the side surface; the first end of the composite protection film is fixed to the support structure, the second end of the composite protection film extends and is fixed to the backlight surface side of the display functional layer, and the surface of the composite protection film close to the backlight surface side is attached to the surface of the backlight surface side close to the composite protection film; The flexible display module further includes a cover plate on one side of the light-emitting surface of the display functional layer, and the support structure is used to support the cover plate and is attached to the cover plate; It further includes: a conductive layer; the conductive layer is located on the side of the composite protection film close to the display functional layer; The backlight surface side of the display functional layer includes a bonding area; in the thickness direction of the flexible display module, the conductive layer overlaps with the bonding area; It further includes: a first adhesive layer and a second adhesive layer; the first adhesive layer is located on the surface of the conductive layer facing away from the composite protection film; the second adhesive layer is located on the surface of the composite protection film close to the conductive layer; the viscosity of the first adhesive layer is greater than the viscosity of the second adhesive layer.

2. The composite protection structure according to claim 1, characterized in that The flexible display module further includes a buffer structure; the buffer structure is located on the backlight surface side of the display functional layer; The second end of the composite protection film is attached to the buffer structure.

3. The composite protection structure according to claim 2, characterized in that, The conductive layer and the buffer structure do not overlap with each other.

4. The composite protection structure according to claim 1, characterized in that, The composite protection film includes a PET film and / or a silicone film.

5. The composite protection structure according to claim 1, characterized in that, The support structure includes a first support portion and a second support portion; the first support portion is located on the side of the second support portion away from the display functional layer; The thickness of the first support portion in the first direction is greater than the thickness of the second support portion in the first direction; the first direction is the thickness direction of the flexible display module; The flexible display module further includes a cover plate on the light-emitting surface side of the display functional layer; the first support portion is used to support the cover plate.

6. The composite protection structure according to claim 5, wherein, In the second direction, the distance between the cover plate and the first support portion is L1; the distance between the second support portion and the display functional layer is L2; wherein, L2 > L1; the second direction is parallel to the light-emitting surface.

7. A method for using the composite protection structure according to any one of claims 1-6, for protecting a flexible display module, characterized in that, The flexible display module includes a display functional layer, the display functional layer includes a light-emitting surface, a backlight surface and a side surface; the light-emitting surface is opposite to the backlight surface, and the side surface is adjacent to the light-emitting surface and the backlight surface; the flexible display module further includes a cover plate on one side of the light-emitting surface of the display functional layer, and the usage method includes: Provide the composite protection structure; Place the support structure of the composite protection structure on the side surface of the display functional layer, and extend and fix the second end of the composite protection film in the composite protection structure to the backlight surface side of the display functional layer, and the surface of the composite protection film close to the backlight surface side is attached to the surface of the backlight surface side close to the composite protection film; the support structure is used to support the cover plate and is attached to the cover plate; After placing the support structure of the composite protection structure on the side of the display function layer and extending and fixing the second end of the composite protection film in the composite protection structure to the backlight side of the display function layer, it further includes: Peeling the composite protection structure from the flexible display module.

8. The usage method of the composite protection structure according to claim 7, characterized in that, The flexible display module further includes a buffer structure; the buffer structure is located on the backlight side; Extending and fixing the second end of the composite protection film in the composite protection structure to the backlight side of the display function layer includes: Extending the second end of the composite protection film in the composite protection structure and attaching it to the side of the buffer structure facing away from the display function layer; Peeling the composite protection structure from the flexible display module includes: Peeling off the buffer structure from the side of the buffer structure away from the support structure, so that the buffer structure drives the composite protection film and the support structure to peel off from the flexible display module.

9. The method of using the composite protection structure according to claim 8, characterized in that, The composite protection structure further includes a conductive layer; the conductive layer is located on the side of the composite protection film close to the display function layer; the backlight side of the display function layer includes a bonding area; in the thickness direction of the flexible display module, the conductive layer overlaps with the bonding area, and the conductive layer does not overlap with the buffer structure; When the buffer structure drives the composite protection film and the support structure to peel off from the flexible display module, the conductive layer remains on the backlight side of the display function layer.

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