Windable display module, display device

Abstract

The present application provides a windable display module and a display device comprising a plurality of film layers installed in a stacked manner and at least one connection layer group located between the plurality of film layers, wherein the at least one connection layer group contacts an adjacent film layer in the stacking direction to provide a variable connection force between the film layers adjacent to the at least one connection layer group. When the display module is in a winding or unfolding process, a first connection force is provided between the film layers adjacent to the at least one connection layer group; and when the display module is in a display process, a second connection force is provided between the film layers adjacent to the at least one connection layer group located in at least a display area; wherein the first connection force is smaller than the second connection force. Through the above design method, the probability of damage during the winding or unfolding process of the display module can be reduced.

Description

Technology Field

[0001] This application belongs to the field of display technology and, specifically, relates to a windable display module and a display device. Background Technology

[0002] As the performance of flexible display modules continues to improve and their dimensions continue to expand, the form of flexible display modules continues to evolve from folding to winding. Among these, windable display modules have become a future development trend, and how to reduce damage to the display module during the winding or unfolding process has become an important issue.

[0003] The present application provides a windable display module and a display device for reducing the probability of damage during the winding or unfolding process of a display module.

[0004] One technical solution adopted in this application to solve the above technical problem provides a windable display module, wherein the windable display module comprises a plurality of film layers installed in a stacked manner and at least one connection layer group located between the plurality of film layers, wherein the at least one connection layer group contacts an adjacent film layer in the stacking direction to have a variable connection force between the film layers adjacent to the at least one connection layer group; wherein, when the display module is in a winding or unfolding process, a first connection force is formed between the film layers adjacent to the at least one connection layer group; and when the display module is in a display process, a second connection force is formed between the film layers adjacent to the at least one connection layer group located in at least a display area; and the first connection force is smaller than the second connection force.

[0005] Furthermore, the plurality of film layers includes two first film layers, and at least one connection layer group is disposed between the two first film layers, and each of the at least one connection layer group includes a pair of connection layers in contact with each other, and each connection layer among the pair of connection layers includes a first surface and a second surface installed opposite each other, and the first surface of each of the pair of connection layers is fixedly connected to the first film layer, and the second surface of the pair of connection layers is in contact with each other to have the first connection force or the second connection force between them.

[0006] To solve the above technical problem, another technical solution employed in the present application provides a display device, wherein the display device comprises: a display module according to any of the above embodiments; a winding control mechanism for winding or unfolding the display module to drive it; and a connection force control mechanism for controlling to have a first connection force between film layers adjacent to at least one connection layer group during the winding or unfolding process of the display module, and controlling to have a second connection force between film layers adjacent to at least one connection layer group located in at least a display area during the display process of the display module.

[0007] The beneficial effect of the present application is that the windable display module provided in the present application comprises a plurality of film layers installed in a stacked manner, wherein the plurality of film layers comprises two first film layers and at least one group of connection layers, and each of the at least one group of connection layers comprises a pair of connection layers installed between two first film layers in contact with each other, and each connection layer comprises a first surface and a second surface installed oppositely in the stacking direction, wherein the first surface of the pair of connection layers is fixedly connected to each first film layer, and the second surface of the pair of connection layers is in contact with each other and has a variable connection force between them. For example, when the display module is in the winding or unfolding process, there is a relatively low first connection force between the two second surfaces. This design method can reduce the tensile stress received between each film layer during the winding or unfolding process and reduce the probability of damage to each film layer during the winding or unfolding process, and when the display module is in the display process, there is a relatively high second connection force between the second surfaces of at least the display area. This design method can ensure a display effect by ensuring close contact between each film layer of the display module in the display area, at least when displayed normally. Brief explanation of the drawing

[0008] FIG. 1 is a structural example diagram of one embodiment of a windable display module of the present application; FIG. 2 is a structural example diagram of another embodiment of the windable display module of the present application; FIG. 3 is a structural example diagram of another embodiment of the windable display module of the present application; FIG. 4 is a structural example diagram of another embodiment of the windable display module of the present application; FIG. 5 is a structural example diagram of another embodiment of the windable display module of the present application; FIG. 6 is an exemplary structural diagram of one embodiment of the display device of the present application; and FIG. 7 is an example diagram of a frame structure of one embodiment within the housing shown in FIG. 6. Specific details for implementing the invention

[0009] The technical methods among the embodiments of this application are described below in conjunction with the attached drawings, clearly and completely. It is evident that the described embodiments are only some of the embodiments of this application, not all. Based on the embodiments of this application, all other embodiments obtained under the premise that those skilled in the art do not perform creative labor fall within the scope of protection of this application.

[0010] Referring to FIG. 1, the windable display module 10 of the present application comprises a plurality of film layers installed in a stacked manner, and the plurality of film layers comprises at least one connection layer 100. In the stacking direction (as shown by the dotted arrow in FIG. 1), the connection layer 100 comprises a first surface 1000 and a second surface 1002 installed oppositely, and the first surface 1000 is fixedly connected between adjacent film layers, and the fixed connection can be achieved through methods such as an adhesive or by directly forming an adjacent film layer on the first surface 1000.

[0011] When the display module 10 is in a wound or unfolded state, the first surface 1000 is in close contact with an adjacent film layer, and the connection force between the first surface 1000 and the adjacent film layer is stably maintained. The connection force between the second surface 1002 and the adjacent film layer may vary. For example, when the display module 10 is in the winding or unfolding process, having a first connection force between the second surface 1002 and the adjacent film layer reduces the tensile stress received between each film layer during the winding or unfolding process and reduces the probability of each film layer being damaged during the winding or unfolding process.

[0012] When the display module 10 is in the display process, a second connection force is formed between the second surface 1002 of the connection layer 100 located in the display area and the adjacent film layer. This design method ensures close contact between each film layer in the display module 10 during normal display, thereby securing a display effect. Optionally, when the display module 10 is in the display process, only the second surface 1002 of the connection layer 100 in the display area is made to have a second connection force with the adjacent film layer, while the second surface 1002 of the connection layer 100 in the remaining non-display area is made to still maintain a first connection force with the adjacent film layer. Alternatively, when the display module 10 is in the display process, it is also possible to make the second surface 1002 of the connection layer 100 in both the display area and the non-display area have a second connection force with the adjacent film layer.

[0013] In the present embodiment, continuing to refer to FIG. 1, the display module 10 comprises a plurality of film layers installed in a stacked manner, wherein among the plurality of film layers, two first film layers 22 and at least one connection layer group 20 are included, and each of the at least one connection layer group 20 includes a pair of connection layers 100 disposed between the two first film layers 22 in contact with each other, and in the stacking direction, each connection layer 100 includes a first surface 1000 and a second surface 1002 installed oppositely, wherein the first surface 1000 of the pair of connection layers 100 is fixedly connected to each first film layer 22, and the second surface 1002 of the pair of connection layers 100 are in contact with each other to have a variable connection force between them. That is, the first surface 1000 of the two connection layers 100 in the connection layer group 20 is installed apart from each other, and the first surface 1000 of the two connection layers 100 is fixedly connected to the adjacent first film layer 22; The second surfaces 1002 of the two connection layers 100 in the connection layer group 20 are installed in close contact with each other, and the connection force between the two contacting second surfaces 1002 can vary. When the display module 10 is in the winding or unfolding process, there is a relatively low first connection force between the two second surfaces 1002 within the same connection layer group 20. This design method can reduce the tensile stress received between each film layer during the winding or unfolding process and reduce the probability of each film layer being damaged during the winding or unfolding process. When the display module 10 is in the display process, there is a relatively high second connection force between the second surfaces 1002 in at least the display area. This design method can ensure a display effect by ensuring close contact between each film layer of the display module 10 in at least the display area when normally displayed.

[0014] In this embodiment, the first connection force is 0. This design method allows the second surface 1002 of the connection layer 100 of the display module 10 to be separated from the adjacent film layer during the winding and unfolding process of the display module 10, thereby minimizing the tensile stress received between each film layer. Additionally, in this embodiment, the specific numerical value of the second connection force, which is greater than the first connection force, is not limited, and it is sufficient if the second surface 1002 of the connection layer 100 and the adjacent film layer are in a state of close contact.

[0015] Optionally, the connection layer 100 includes a conductive film layer 1004, and a pair of connection layers 100 of the connection layer group 20 each include two conductive film layers 1004 that carry positive and negative charges, respectively, under current conditions. Since the two conductive film layers 1004 have heterogeneous charges under current conditions, they attract each other and have a second connection force, thereby causing two first film layers 22 connected to each of the pair of connection layers 100 to adhere closely to each other. Additionally, since the two conductive film layers 1004 in the connection layer group 20 do not carry charges under non-current conditions, the two connection layers 100 in the connection layer group 20 are separated from each other and have a first connection force. In this embodiment, the conductive film layer 1004 may be a metal film system, an oxide film system, a polymer film system, a composite film system, etc. (e.g., TiAlTi composite film, indium tin oxide ITO, etc.). The installation method of the above connection layer 100 has a relatively simple structure and can relatively easily realize variability in connection force.

[0016] Furthermore, to reduce the probability of damage or cracking of the conductive film layer 1004 during the winding and unfolding process, the connecting layer 100 may further include a buffer film layer 1006 installed laminated on the conductive film layer 1004 as shown in FIG. 1, wherein the side on which the buffer film layer 1006 is separated from the conductive film layer 1004 is the second surface 1002, and the side on which the conductive film layer 1004 is separated from the buffer film layer 1006 is the first surface 1000. In addition, among the connecting layer group 20, two buffer film layers 1006 of a pair of connecting layers 100 are in contact with each other, and there is no fixed connecting member between the two sides on which the two buffer film layers 1006 are installed facing each other, and the frictional force between the two sides on which the two buffer film layers 1006 are installed facing each other is less than a limit value. The introduction of the above buffer layer 1006 can reduce the frictional stress received between each film layer during the winding and unfolding process of the display module 10 and reduce surface wear, thereby ensuring a display effect. Optionally, the above buffer layer 1006 can be formed on the surface of the conductive film layer 1004 using a coating method, and the buffer layer 1006 can be selected from a material that has relatively good insulation, a smooth surface, a low coefficient of friction, and relatively good wear resistance, for example, this material may be an organic material (e.g., polytetrafluoroethylene, modified nylon, polyethylene, etc.).

[0017] In addition, to ensure adsorption capacity and buffering effect when current is applied to the conductive film layer 1004, the thickness of the connection layer 100 is 20 μm or more, for example, 30 μm, 40 μm, etc., and the thickness of the conductive film layer 1004 and the buffer film layer 1006 is 10 μm or more each, for example, 15 μm, 20 μm, etc.

[0018] Of course, in other embodiments, the structural design of the connection layer 100 may also be different. For example, the connection layer 100 may include an adhesive member, and the adhesiveness of the adhesive member varies with temperature changes. The adhesive member may include at least one of an epoxy resin adhesive, a urethane adhesive, and a pressure-sensitive adhesive, and the viscosity of the adhesive member made of the above material may change significantly with temperature changes.

[0019] As another example, the above connection layer 100 may include a thermal expansion member having adsorption capacity, and the gap between the two thermal expansion members of the connection layer 100 may be varied so that the thermal expansion members can come into contact with each other (i.e., second connection force) or separate (i.e., first connection force). Taking a negative thermal expansion member as an example, the negative thermal expansion member may be formed of an elastic body and a negative thermal expansion material doped into the elastic body. This doped negative thermal expansion material may be in the form of particles, rods, etc., and this elastic body may be an elastomer having adsorption capacity and being easily deformable, and this negative thermal expansion material may be a lanthanoid-based iron-silicon La(Fe,Si) 13 It can be made of at least one of the following: a compound, an antiperovskite compound Mn3AN (A=Zn, Ga, Cu), zirconium tungstate ZrW2O8, and hafnium tungstate HfW2O8.

[0020] In another embodiment, referring to FIG. 2, FIG. 2 is a structural example of another embodiment of a windable display module of the present application. The connection layer 100 includes at least one blocking area for blocking the connection layer 100, and the blocking area is filled with a glue layer 104 so as to allow two first film layers 22 to be fixedly connected in the stacking direction. In some cases, the length of the display module 10 is relatively long, and the glue layer 104 is introduced to reduce the probability of positional misalignment and wrinkles occurring between film layers having a first connection force during the winding or unfolding process of the relatively long display module 10.

[0021] Preferably, as shown in FIG. 2, in the unfolding direction of the display module 10 (as indicated by the dotted arrow in FIG. 2), the connection layer 100 includes a plurality of spaced-apart sub-connection layers 1008, and a glue layer 104 is installed between adjacent sub-connection layers 1008. That is, in a direction perpendicular to the unfolding direction, the width of the blocking area is equal to the width of the connection layer 100, and the connection layer 100 is separated into a plurality of independent sub-connection layers 1008 by the blocking area. Meanwhile, this design method can reduce the probability of positional misalignment or wrinkles occurring between film layers having a first connection force during the winding or unfolding process of the display module 10. On the other hand, since each subsequent sub-connection layer 1008 can be connected to a connection force control mechanism through a corresponding circuit, the connection force status of each sub-connection layer 1008 can be controlled individually, and this design method offers relatively high flexibility.

[0022] Furthermore, in the unfolding direction of the display module 10, the dimensions (i.e., length) of the sub-connecting layer 1008 are at least 10 times the dimensions (i.e., length) of the glue layer 104, for example, the length of the sub-connecting layer 1008 is 15 times, 20 times, etc. of the length of the glue layer 104. In the above design method, the length of the sub-connecting layer 1008 is much larger than the length of the glue layer 104, and the display module 10 can be designed in a shape similar to a roll of paper. This design method can significantly reduce the tensile stress received between each film layer and, at the same time, further reduce the probability of misalignment or wrinkles occurring between film layers having a first connecting force during the winding or unfolding process of the display module 10.

[0023] Of course, in other embodiments, the width of the blocking area may be smaller than the width of the connection layer 100 even in a direction perpendicular to the development direction, and the connection layer 100 is considered as one.

[0024] Referring further to FIG. 2, the film layer of the display module 10 provided in the present application may include a polarizing layer 106, a display layer 102, and a support layer 108 installed in a stacked manner. To reduce the thickness of the display module 10, the polarizing layer 106 may be a cover plate having a polarization function. The display layer 102 may include a emitting layer, an array layer, and a support film installed in a stacked manner, wherein the emitting layer is installed in close proximity to the polarizing layer 106 relative to the array layer, and the support film may be used to reduce the probability of bending of the emitting layer and the array layer itself. The support layer 108 may be a steel sheet, etc., and is used to support the display layer 102 and reduce the probability of wear of the display layer 102.

[0025] Among them, as shown in FIG. 1 or FIG. 2, the at least one connection layer group 20 is installed as one, and the two first film layers 22 are each a polarizing layer 106 and a display layer 102, and the connection layer group 20 is installed between the polarizing layer 106 and the display layer 102. When the structure of the connection layer 100 adopts the installation method of the conductive film layer 1004, as shown in FIG. 2, a connection layer group 20 consisting of two connection layers 100 is installed between the display layer 102 and the polarizing layer 106, and the conductive film layer 1004 of one connection layer 100 in the connection layer group 20 is fixedly connected to the display layer 102, and the conductive film layer 1004 of the other connection layer 100 in the connection layer group 20 is fixedly connected to the polarizing layer 106. When the structure of the connection layer 100 adopts a thermal expansion member or a variable viscosity adhesive member, two connection layers 100 are installed between the polarizing layer 106 and the display layer 102, and one side of the connection layer 100 can be fixedly connected to the polarizing layer 106 or the display layer 102, and the connection force between the relatively installed sides of the two connection layers 100 is variable. Alternatively, when the structure of the connection layer 100 adopts a thermal expansion member or a variable viscosity adhesive member, only one connection layer 100 can be installed between the polarizing layer 106 and the display layer 102, and one side of the connection layer 100 can be fixedly connected to one of the polarizing layer 106 and the display layer 102, and the connection force between the other side of the connection layer 100 and the other of the polarizing layer 106 and the display layer 102 is variable.

[0026] Alternatively, as shown in FIG. 3, at least one connection layer group 20 is installed, and the two first film layers 22 are each a display layer 102 and a support layer 108, and a connection layer group 20 is installed between the display layer 102 and the support layer 108. When the structure of the connection layer 100 adopts the installation method of the conductive film layer 1004, as shown in FIG. 3, a connection layer group 20 consisting of two connection layers 100 is installed between the display layer 102 and the support layer 108, and the conductive film layer 1004 of one connection layer 100 in the connection layer group 20 is fixedly connected to the display layer 102, and the conductive film layer 1004 of the other connection layer 100 in the connection layer group 20 is fixedly connected to the support layer 108.

[0027] Alternatively, as shown in FIG. 4, the at least one connection layer group 20 is installed in two, and the plurality of film layers further comprises one second film layer 24 installed by laminating on two first film layers 22, and the two first film layers 22 and one second film layer 24 are each a polarizing layer 106, a display layer 102, and a support layer 108, and the polarizing layer 106, the display layer 102, and the support layer 108 are sequentially laminated such that two connection layer groups 20 are located between them. That is, one connection layer group 20 is installed between the polarizing layer 106 and the display layer 102, and another connection layer group 20 is installed between the display layer 102 and the support layer 108. In order not to affect the display effect, the connection layer 100 located on the light-emitting side of the display layer 102 of the display module 10 (e.g., the connection layer 100 located between the polarizing layer 106 and the display layer 102) may use a material with high light transmittance (e.g., a transparent indium tin oxide thin film), and the connection layer 100 located on the non-light-emitting side of the display layer 102 (e.g., the connection layer located between the display layer 102 and the support layer 108) may use a material with high light transmittance or a material with low light transmittance.

[0028] In addition, to reduce the difficulty of the manufacturing process, as shown in FIG. 2, the polarizing layer 106, the display layer 102, and the support layer 108 can be designed as the entire layer, that is, the blocking area of ​​the connection layer 100 is not extended to the polarizing layer 106, the display layer 102, and the support layer 108 at the corresponding location.

[0029] Additionally, referring to FIG. 5, at least one connection layer group 20 is installed as one, and two first film layers 22 are polarizing layers 106 and interlayer insulating layers 101, and a plurality of film layers also have a display layer 102 located far from the polarizing layer 106 of the interlayer insulating layer 101, and a pair of connection layers 100 each include a conductive film layer 1004, and the interlayer insulating layer 101 is located between the display layer 102 and the adjacent conductive film layer 1004. That is, one connection layer group 20 is installed between the polarizing layer 106 and the interlayer insulating layer 101, and does not come into direct contact with the display layer 102 and the adjacent conductive film layer 1004, and the introduction of the interlayer insulating layer 101 can reduce the probability of static electricity generation. Optionally, the material of the interlayer insulating layer 101 may be an inorganic or an organic material.

[0030] Referring to FIGS. 6 and 7, the display device generally includes a housing 12 for housing a display module 10 mentioned in any of the above embodiments. Additionally, a winding control mechanism 14 and a connection force control mechanism 16 may be housed inside the housing 12.

[0031] Among them, the winding control mechanism 14 is for driving the winding or unfolding of the display module 10 and may include a motor. The output terminal of the motor may be connected to one end of the display module 10, and the speed of winding or unfolding of the display module 10 may be controlled by controlling the speed at which the output terminal of the motor rotates, and the winding or unfolding of the display module 10 may be controlled by controlling the direction in which the output terminal of the motor rotates; for example, if the output terminal of the motor rotates clockwise, the display module 10 is wound, and if the output terminal of the motor rotates counterclockwise, the display module 10 is unfolded.

[0032] The connection force control mechanism 16 is intended to control the connection force to have a first connection force between the second surfaces 1002 of the connection layer 100 during the winding or unfolding process of the display module 10, and to control the connection force to have a second connection force between the second surfaces 1002 located at least in the display area during the display process of the display module 10. For example, if the structure of the connection layer 100 adopts an installation method of a conductive film layer 1004, the connection force control mechanism 16 may be a charge generating device that controls the two conductive film layers 1004 within the connection layer group 20, each connected to two conductive film layers 1004 in the connection layer group 20 and located at least in the display area during the display process, to have positive and negative charges respectively, thereby causing the two connection layers 100 within the connection layer group 20 to be in close contact. As another example, if the structure of the connection layer 100 uses a thermal expansion member or an adhesive member, the connection force control mechanism 16 may be a heating device that controls the temperature of the thermal expansion member or the adhesive member.

[0033] To improve the efficiency and degree of automation of the display device, the display device provided in the present application may further include a processor 18 that can be housed inside a housing 12, and the processor 18 is coupled to a winding control mechanism 14 and a connection force control mechanism 16, and may transmit a winding command or an unfolding command to the winding control mechanism 14, transmit a first connection force control command to the connection force control mechanism 16, and after receiving a unfolding completion command fed back by the winding control mechanism 14, transmit a second connection force control command to the connection force control mechanism 16.

[0034] In some cases, when the display module 10 is deployed, it is not fully deployed, that is, the effective display area is not 100%, and this is intended to reduce the power consumption of the entire display device. As shown in FIG. 2, the connection layer 100 in the deployment direction of the display module 10 includes a plurality of sub-connection layers 1008 installed separately, and each sub-connection layer 1008 is electrically connected to a connection force control mechanism 16. The connection force control mechanism 16 controls the sub-connection layer 1008 containing the current display area to have a second connection force between the film layer adjacent to it. For example, as shown in FIG. 2, the length of the current display area is set to L1, and the sub-connection layer 1008 covering the current display area can be controlled to have a second connection force between the adjacent film layer, wherein the length L2 of the sub-connection layer 1008 having the second connection force is greater than or equal to L1. For the other remaining sub-connection layers 1008, the connection force control mechanism 16 can control them to have a first connection force.

[0035] In addition, to further reduce the power consumption of the entire display device, the display device may also be equipped with a display control mechanism 11 coupled to the processor 18. The display control mechanism 11 detects and acquires the current actual display area of ​​the display module 10 after the display module 10 is fully deployed, and transmits this actual display area to the processor 18, thereby controlling the processor 18 to display the screen on the current actual display area and not to display on other non-actual display areas.

[0036] The operation process of the above display device in a specific application scenario is as follows.

[0037] In response to the processor 18 receiving an unfolding trigger command, the processor 18 issues an unfolding command to the winding control mechanism 14 and issues a first connecting force control command to the connecting force control mechanism 16, thereby causing the winding control mechanism 14 to drive the unfolding of the display module 10, and the connecting force control mechanism 16 controls the separation of the second surface 1002 of two connecting layers 100 within the same connecting layer group 20 in the display module 10.

[0038] In response to the processor 18 receiving a deployment completion command, the processor 18 issues a second connection force control command to the connection force control mechanism 16, thereby controlling the connection force control mechanism 16 to bring the second surface 1002 of two connection layers 100 within the same connection layer group 20 in at least the display area of ​​the display module 10 into close contact, and the processor 18 controls the display of the screen in the current display area.

[0039] In response to the processor 18 receiving a winding trigger command, the processor 18 controls the current display area to stop the screen display, and the winding control mechanism 14 to drive the winding of the display module 10 by issuing a winding command to the winding control mechanism 14 and issuing a first connection force control command to the connection force control mechanism 16, and the connection force control mechanism 16 controls the separation of the second surface 1002 of two connection layers 100 within the same connection layer group 20 of the display module 10.

[0040] The above description is merely an example of the present application and does not limit the scope of the claims of the present application. Any use of the contents of the specification and attached drawings of the present application to transform equivalent structures or equivalent processes, or any direct or indirect use in other related technical fields, is included within the scope of patent protection of the present application.

Claims

Claim 1 A windable display module comprises a plurality of film layers installed in a stacked manner and at least one connection layer group located between the plurality of film layers, wherein the at least one connection layer group contacts an adjacent film layer in the stacking direction to provide a variable connection force between the film layers adjacent to the at least one connection layer group; wherein, when the windable display module is in a winding or unfolding process, a first connection force is provided between the film layers adjacent to the at least one connection layer group; and when the windable display module is in a display process, a second connection force is provided between the film layers adjacent to the at least one connection layer group located in at least a display area. A first connection force is smaller than a second connection force; the plurality of film layers comprises two first film layers, and the at least one connection layer group is disposed between the two first film layers, and each of the at least one connection layer group comprises a pair of connection layers in contact with each other, and each of the connection layers [each connection layer among the pair of connection layers] comprises a first surface and a second surface installed oppositely, and the first surface of each of the pair of connection layers is fixedly connected to the first film layer; further comprising at least one blocking region that blocks the connection layer to fixedly connect the two first film layers in the stacking direction, and a glue layer filled within the blocking region; and in the unfolding direction of the display module, the connection layer comprises a plurality of spaced-apart sub-connecting layers, wherein the glue layer is installed between the adjacent sub-connecting layers. Claim 2 In claim 1, a windable display module in which the first connection force is 0. Claim 3 A windable display module according to claim 1, wherein the second surfaces of the pair of connection layers are in contact with each other and have the first connection force or the second connection force between them. Claim 4 In paragraph 3, the pair of connection layers comprises two conductive film layers that respectively carry positive and negative charges in an energized state, and the two conductive film layers in an energized state attract each other because they have heterogeneous charges, and have the second connection force and bring two first film layers connected to the pair of connection layers [the pair of connection layers] into close contact with each other; the connection layer further comprises a buffer film layer installed laminated with the conductive film layer, the second surface is the side of the buffer film layer separated from the conductive film layer, and two of the buffer film layers among the pair of connection layers are in contact with each other, forming a windable display module. Claim 5 In paragraph 3, the connection layer comprises an adhesive member, and the adhesiveness of the adhesive member changes according to temperature; or, the connection layer comprises a thermal expansion member having an adsorption capacity, and the gap between the two thermal expansion members included in the pair of connection layers changes according to temperature, so that the two thermal expansion members of the pair of connection layers come into contact with each other, forming a windable display module. Claim 6 A windable display module according to claim 1, wherein the dimensions of the sub-connection layer in the unfolding direction of the windable display module are at least 10 times the dimensions of the glue layer. Claim 7 In paragraph 3, the at least one connection layer group is installed as one, and the two first film layers are a polarizing layer and a display layer, and the connection layer group is installed between the polarizing layer and the display layer, or the two first film layers are a display layer and a support layer, and the connection layer group is installed between the display layer and the support layer; or, the at least one connection layer group is installed as one, and the two first film layers are a polarizing layer and an interlayer insulating layer, and the plurality of film layers further include a display layer located far from the polarizing layer of the interlayer insulating layer, and the pair of connection layers each include a conductive film layer, and the interlayer insulating layer is located between the display layer and the adjacent conductive film layer; Alternatively, the at least one connection layer group is installed in two, and the plurality of film layers further include one second film layer installed laminated with the two first film layers, wherein the two first film layers and the one second film layer are each a polarizing layer, a display layer, and a support layer, and the polarizing layer, the display layer, and the support layer are sequentially laminated such that the two connection layer groups are located between each other, thereby forming a windable display module. Claim 8 In paragraph 3, a windable display module having a thickness of 20 micrometers or more of the connection layer. Claim 9 A display device comprising: a windable display module according to any one of claims 1 to 8; a winding control mechanism for winding or unfolding the windable display module to drive it; and a connection force control mechanism for controlling to have a first connection force between film layers adjacent to at least one connection layer group during the winding or unfolding process of the windable display module, and controlling to have a second connection force between film layers adjacent to at least one connection layer group located in at least a display area during the display process of the windable display module. Claim 10 A display device according to claim 9, wherein the plurality of film layers comprises two first film layers, the at least one connection layer group is disposed between the two first film layers, each of the at least one connection layer group comprises a pair of connection layers in contact with each other, each connection layer among the pair of connection layers comprises a first surface and a second surface installed oppositely, the first surface of each of the pair of connection layers is fixedly connected to each of the first film layers, and the second surface of the pair of connection layers is in contact with each other to have a first connection force or a second connection force between the two. Claim 11 A display device according to claim 10, wherein, in the unfolding direction of the above-mentioned windable display module, the connection layer comprises a plurality of spaced-apart sub-connection layers, each of which is electrically connected to the connection force control mechanism, and the connection force control mechanism controls to have a second connection force between the second surfaces of the sub-connection layers including a current display area. Claim 12 A display device according to claim 10, further comprising a processor coupled to the winding control mechanism and the connecting force control mechanism to transmit a winding command or an unfolding command to the winding control mechanism and a first connecting force control command to the connecting force control mechanism, and after receiving a unfolding completion command fed back by the winding control mechanism, to transmit a second connecting force control command to the connecting force control mechanism. Claim 13 In claim 10, the connection layer comprises a conductive film layer, and the connection force control mechanism comprises a charge generating device; or, the connection layer comprises an adhesive member or a thermal expansion member, and the connection force control mechanism comprises a heating device, in a display device. Claim 14 delete Claim 15 delete Claim 16 delete Claim 17 delete Claim 18 delete Claim 19 delete

Images