Flexible display module and flexible display device

Abstract

Embodiments of the present application provide a flexible display module and a flexible display device, the flexible display module comprising: a flexible display panel; a spacer layer located at least on the backlight side of the flexible display panel, the spacer layer itself having magnetism or having magnetism under power supply; when the flexible display module is in a rolled state, the flexible display module is rolled into a N-layer rolled structure, N is a positive integer, along a first direction of the rolled structure pointing to a rolled center, projections of the spacer layers on any two adjacent structures in the rolled structure at least partially overlap, and repulsion is formed between the spacer layers on any two adjacent structures in the rolled structure at least parallel to the first direction. Under the action of the repulsion, a certain interval is formed between any two adjacent structures in the rolled structure, i.e. no longer in contact, thereby effectively avoiding friction between any two adjacent structures in the rolled structure during rolling of the flexible display module, and better protection of the flexible display module is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, in particular to a flexible display module and a flexible display device. BACKGROUND

[0002] In the field of display, the flexible display module is widely used in various fields requiring flexible display because of its curlable characteristic. In the flexible display module, one end of the flexible display panel is fixed on a reel, and the other end of the flexible display panel can rotate relative to the reel, so that the flexible display panel is in a state of being curled on the reel or in a state of being unfolded and flat.

[0003] However, the inventor of the present application has found that during the curling process of the flexible display module, the surface of the flexible display module will rub, which may cause damage to the flexible display module. SUMMARY

[0004] The embodiments of the present application provide a flexible display module and a flexible display device, which can effectively avoid friction during the curling process of the flexible display module.

[0005] In a first aspect, the embodiments of the present application provide a flexible display module, which comprises: a flexible display panel; a spacing layer located at least on the backlight side of the flexible display panel, the spacing layer itself having magnetism or having magnetism under the condition of being electrified; when the flexible display module is in a curled state, the flexible display module is curled into an N-layer curled structure, N is a positive integer, along a first direction of the curled structure pointing to a curling center, the projections of the spacing layers on any two adjacent structures in the curled structure at least partially overlap, and the spacing layers on any two adjacent structures in the curled structure form a repulsive force at least parallel to the first direction.

[0006] According to the embodiments of the first aspect of the present application, when the flexible display module is in a curled state, along the first direction of the curled structure pointing to the curling center, the projection of the spacing layer on the i-th layer of the curled structure does not overlap with the projection of the spacing layer on the i+2-th layer of the curled structure, or the overlapping area of the projection of the spacing layer on the i-th layer of the curled structure and the projection of the spacing layer on the i+1-th layer of the curled structure is greater than the overlapping area of the projection of the spacing layer on the i-th layer of the curled structure and the projection of the spacing layer on the i+2-th layer of the curled structure, 1≤i≤N and i is an integer.

[0007] According to the first aspect of the present application, in any of the above embodiments, in the first direction of the curling structure pointing to the curling center, the Nth layer of the curling structure is located on the side of the first layer of the curling structure away from the curling center; when the flexible display module is in the curled state, the overlapping area of the projections of the spacer layers on the adjacent two layers of the curling structure decreases from the first layer to the Nth layer of the curling structure.

[0008] In this way, the repulsive force formed between the spacer layers on the odd-numbered layers and the even-numbered layers is greater than the attractive force formed between the spacer layers on the odd-numbered layers, and the repulsive force formed between the spacer layers on the odd-numbered layers and the even-numbered layers is greater than the attractive force formed between the spacer layers on the even-numbered layers, thereby ensuring that there is a gap between any adjacent two layers in the curling structure, effectively avoiding friction between any adjacent two layers in the curling structure during the curling of the flexible display module, and thereby achieving better protection of the flexible display module.

[0009] According to the first aspect of the present application, in any of the above embodiments, when the flexible display module is in the flat state, the spacer layers on the N layers of the curling structure are arranged into at least one row in the first target direction, and the first target direction intersects the row direction of the flexible display module; when the flexible display module is in the curled state, in the first direction of the curling structure pointing to the curling center, the projection of the spacer layer on the ith layer of the curling structure at least partially overlaps the projection of the spacer layer on the (i+1)th layer of the curling structure, and the projection of the spacer layer on the ith layer of the curling structure does not overlap the projection of the spacer layer on the (i+2)th layer of the curling structure.

[0010] In this way, since the projection of the spacer layer on the ith layer of the curling structure does not overlap the projection of the spacer layer on the (i+2)th layer of the curling structure, the spacer layers on different odd-numbered layers do not generate attractive force, and the spacer layers on different even-numbered layers do not generate attractive force, which can eliminate the influence of attractive force on repulsive force, ensure that there is a gap between any adjacent two layers in the curling structure, effectively avoid friction between any adjacent two layers in the curling structure during the curling of the flexible display module, and thereby achieve better protection of the flexible display module.

[0011] According to the first aspect of the present application, in any of the above embodiments, when the flexible display module is in the unfolded state, the interval layers on the N layers of the curling structure are arranged in at least two rows, wherein a part of the rows of interval layers are arranged in a first target direction, and another part of the rows of interval layers are arranged in a second target direction, the first target direction and the second target direction are perpendicular to each other, and the first target direction and the second target direction are perpendicular to the row direction of the flexible display module; when the flexible display module is in the curled state, the projection of the interval layer on the i-th layer of the curling structure and the projection of the interval layer on the i+1-th layer of the curling structure at least partially overlap in the first direction of the curling structure pointing to the curling center, and the projection of the interval layer on the i-th layer of the curling structure and the projection of the interval layer on the i+2-th layer of the curling structure do not overlap.

[0012] In this way, since the projection of the interval layer on the i-th layer of the curling structure and the projection of the interval layer on the i+2-th layer of the curling structure do not overlap, the attraction force between the interval layers on different odd-numbered layer structures and the attraction force between the interval layers on different even-numbered layer structures will not be generated, the influence of the attraction force on the repulsion force can be eliminated, the interval between any two adjacent layer structures in the curling structure is ensured, the friction between any two adjacent layer structures in the curling structure during the curling process of the flexible display module is effectively avoided, and better protection of the flexible display module is achieved.

[0013] According to the first aspect of the present application, in any of the above embodiments, the interval layer is provided with an electromagnet; when the flexible display module is in the curled state, the current direction of the electromagnet in the interval layer on one of any two adjacent layer structures in the curling structure is opposite to the current direction of the electromagnet in the interval layer on the other layer structure.

[0014] In this way, since the current direction of the electromagnet in the interval layer on one of any two adjacent layer structures in the curling structure is opposite to the current direction of the electromagnet in the interval layer on the other layer structure, the magnetic pole direction of the electromagnet in any two adjacent layer structures in the curling structure is opposite, so that the repulsion force at least parallel to the first direction is generated between the interval layers on any two adjacent layer structures in the curling structure, and under the action of the repulsion force, a certain interval is formed between any two adjacent layer structures in the curling structure, that is, any two adjacent layer structures in the curling structure are no longer in contact, so that the friction between any two adjacent layer structures in the curling structure during the curling process of the flexible display module is effectively avoided, and better protection of the flexible display module is achieved.

[0015] According to the first aspect of the present application, in any of the above embodiments, the flexible display panel is provided with a conductive trace; the conductive trace extends to the interval layer and is electrically connected with the electromagnet in the interval layer, and the conductive trace is used to supply power to the electromagnet in the interval layer.

[0016] Thus, when the flexible display module is in the rolled state, the flexible display panel can supply power to the electromagnet in the spacing layer through the conductive trace, so that the electromagnet has magnetism, and repulsion at least parallel to the first direction is generated between the spacing layers on any two adjacent structures in the rolled structure, so that a certain spacing is formed between any two adjacent structures in the rolled structure under the action of the repulsion, that is, any two adjacent structures in the rolled structure no longer contact, thereby effectively avoiding friction between any two adjacent structures in the rolled structure during rolling of the flexible display module, and better protection of the flexible display module is achieved.

[0017] According to any one of the foregoing embodiments of the first aspect of the application, the flexible display module comprises at least one first region and at least one second region distributed at intervals along the rolling direction; when the flexible display module is in the rolled state, one of the first region and the second region forms an odd layer in the N-layer rolled structure, and the other forms an even layer in the N-layer rolled structure; the first region and the second region are both provided with a spacing layer; the spacing layer is provided with a permanent magnet, a first magnetic pole of the permanent magnet in the first region faces the flexible display panel, and a second magnetic pole of the permanent magnet in the first region faces away from the flexible display panel; a first magnetic pole of the permanent magnet in the second region faces away from the flexible display panel, and a second magnetic pole of the permanent magnet in the second region faces the flexible display panel; or, the spacing layer is provided with an electromagnet, when the flexible display module is in the rolled state, the electromagnet in the first region is supplied with a current in the first direction, and the electromagnet in the second region is supplied with a current in the second direction, the first direction being opposite to the second direction.

[0018] Thus, since the current direction of the electromagnet in the spacing layer of the first region is opposite to the current direction of the electromagnet in the spacing layer of the second region, the magnetic pole direction of the electromagnet in any two adjacent structures in the rolled structure is opposite, so that repulsion at least parallel to the first direction is generated between the spacing layers on any two adjacent structures in the rolled structure, so that a certain spacing is formed between any two adjacent structures in the rolled structure under the action of the repulsion, that is, any two adjacent structures in the rolled structure no longer contact, thereby effectively avoiding friction between any two adjacent structures in the rolled structure during rolling of the flexible display module, and better protection of the flexible display module is achieved.

[0019] According to the first aspect of the present application, in any of the above embodiments, when the spacer layer is provided with the electromagnet, the flexible display panel is provided with conductive traces, the conductive traces including first conductive traces and second conductive traces, the first conductive traces being electrically connected to the positive voltage terminal, and the second conductive traces being electrically connected to the negative voltage terminal or the ground terminal; the first end of the electromagnet in the first area is electrically connected to the first conductive traces, and the second end of the electromagnet in the first area is electrically connected to the second conductive traces; the first end of the electromagnet in the second area is electrically connected to the second conductive traces, and the second end of the electromagnet in the second area is electrically connected to the first conductive traces.

[0020] According to the first aspect of the present application, in any of the above embodiments, the flexible display module further includes: a back support layer located between the flexible display panel and the spacer layer; and an anti-bending layer located between the back support layer and the spacer layer; the spacer layer is arranged on the surface of the anti-bending layer away from the back support layer.

[0021] In this way, when the flexible display module is in a rolled state, the length of the anti-bending layer remains unchanged, improving the anti-bending ability of the anti-bending layer, thereby improving the overall stress uniformity of the flexible display module, reducing the risk of device and adhesive falling off.

[0022] According to the first aspect of the present application, in any of the above embodiments, the flexible display module further includes: a tensile-resistant component located at at least one end in the rolling direction of the flexible display module, the tensile-resistant component extending along the stacking direction of the flexible display module and being fixedly connected to the flexible display panel, the back support layer, and the anti-bending layer.

[0023] In this way, by arranging the tensile-resistant component at the end in the rolling direction of the flexible display module, the tensile-resistant component can block the sliding of the film layers, reducing the sliding stress during rolling and improving the service life of the tensile-resistant component.

[0024] In a second aspect, the embodiments of the present application provide a flexible display device, which includes the flexible display module provided in the first aspect.

[0025] The flexible display module and the flexible display device provided by the embodiment of the present application, the flexible display module comprises: a flexible display panel; a spacing layer, which is located at least on the backlight side of the flexible display panel, the spacing layer itself has magnetism or has magnetism under the condition of being electrified; when the flexible display module is in a rolled state, the flexible display module is rolled into a N-layer rolled structure, N is a positive integer, a first direction of the rolled structure points to a rolling center, the projections of the spacing layers on any two adjacent layers in the rolled structure at least partially overlap, and repulsion at least parallel to the first direction is formed between the spacing layers on any two adjacent layers in the rolled structure. Under the action of the repulsion, a certain spacing is formed between any two adjacent layers in the rolled structure, i.e., no longer in contact, thereby effectively avoiding friction between any two adjacent layers in the rolled structure in the rolling process of the flexible display module, and better protection of the flexible display module is realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below, and other drawings can also be obtained by those of ordinary skill in the art without creative labor on the basis of these drawings.

[0027] Figure 1 A cross-sectional schematic view of the flexible display module provided by the embodiment of the present application in a rolled state;

[0028] Figure 2 A cross-sectional schematic view of the flexible display module provided by the embodiment of the present application in a flattened state;

[0029] Figure 3 Another cross-sectional schematic view of the flexible display module provided by the embodiment of the present application in a rolled state;

[0030] Figure 4 Still another cross-sectional schematic view of the flexible display module provided by the embodiment of the present application in a rolled state;

[0031] Figure 5 Another cross-sectional schematic view of the flexible display module provided by the embodiment of the present application in a flattened state;

[0032] Figure 6 Still another cross-sectional schematic view of the flexible display module provided by the embodiment of the present application in a flattened state;

[0033] Figure 7 Still another cross-sectional schematic view of the flexible display module provided by the embodiment of the present application in a flattened state;

[0034] Figure 8 Still another cross-sectional schematic view of the flexible display module provided by the embodiment of the present application in a flattened state;

[0035] Figure 9 A partial structure schematic view of a spacer layer in a flexible display module provided by an embodiment of the present application;

[0036] Figure 10 A partial cross-sectional schematic view of a flexible display module in a rolled state provided by an embodiment of the present application;

[0037] Figure 11 A top view schematic view of a flexible display module in an unfolded state provided by an embodiment of the present application;

[0038] Figure 12 A partial cross-sectional schematic view of a flexible display module in an unfolded state provided by an embodiment of the present application;

[0039] Figure 13 Another partial cross-sectional schematic view of a flexible display module in an unfolded state provided by an embodiment of the present application;

[0040] Figure 14 Still another partial cross-sectional schematic view of a flexible display module in an unfolded state provided by an embodiment of the present application;

[0041] Figure 15 Yet another partial cross-sectional schematic view of a flexible display module in an unfolded state provided by an embodiment of the present application;

[0042] Figure 16 A structure schematic view of a flexible display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0043] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. The following description is made with reference to the accompanying drawings in which the specific embodiments of the application are shown. It should be noted that the application can be practiced without necessarily being limited to these specific embodiments, and that the word "comprising" does not exclude other elements being present in addition to those described. The word "a" preceding an element does not exclude the presence of a plurality of such elements. It should further be noted that the features described below can apply to each and every aspect of the application separately or in all possible combinations. The word "comprising" does not exclude other elements being present in addition to those described, nor does it exclude that a currently recited feature, such as a specific interconnection, is not the only feature, and the word "a" or "an" preceding the name of a feature does not exclude multiple instances of this feature. The word "exemplary" does not exclude that embodiments other than the exemplified embodiments are possible. Meanings of "at least", "at most" and "at least one" are well understood by those skilled in the art. The indefinite article "a" or "an" does not exclude a plurality. The singular form "a", "an" and "the" include plural references unless the context clearly dictates otherwise. The word "comprise" and variations of the word, such as "comprising", "comprises" and "comprised", means "including but not limited to", and the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise. The word "couple" or "coupled" means an indirect or direct electrical or mechanical connection. The word "coupled" or "coupling" does not require contact between the items being coupled. The word "coupled" or "coupling" does not necessarily mean "directly coupled" or "directly connected". The word "coupled" or "coupling" means to be linked or connected in some way, either directly or indirectly, and includes the options of being linked or connected either directly or indirectly. The word "coupled" or "coupling" does not exclude the intermediate introduction of one or more other elements, components, units or units.

[0044] It should be noted that the relative terms, such as first and second, and the like, are used herein only to distinguish one entity or operation from another, and do not necessarily require or imply any actual such relationship or order between such entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by an "includes" statement does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0045] It should be understood that the term "and / or" used herein only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0046] Various modifications and changes can be made to the present application without departing from the spirit or scope of the application. It is understood that the present application is intended to cover modifications and variations of this application including its scope. It is to be understood that the embodiments provided by the present application can be combined with each other as long as they do not conflict.

[0047] Before describing the technical solutions provided by the embodiments of the present application, in order to facilitate the understanding of the embodiments of the present application, the present application first specifically describes the problems existing in the related art:

[0048] With the development of display technology, flexible display has shown great potential in the display field. From fixed flexible display screen to foldable display screen, flexible display module has both large size and portability. In order to make the display screen further realize the requirement of convenient storage or portability when not in use, more and more attention is paid to the rollable flexible display module. At present, the rollable display module is mainly used in notebook computers, tablet computers, vehicle-mounted fields, etc. Considering the space saving and portability, the number of rollable flexible display modules will be more and more, so the design requirements of rollable flexible display modules are getting higher and higher, which is a great challenge to the current display industry.

[0049] The present inventors have found that during the rolling process of the flexible display module, the surface of the flexible display module will be rubbed, which may cause damage to the flexible display module.

[0050] In view of the inventors’ above-mentioned research findings, the present invention provides a flexible display module and a flexible display device, which can solve the technical problem of damage caused by friction during the rolling process of flexible display modules in related technologies.

[0051] The technical concept of this invention is as follows: at least one spacer layer is provided on the backlight side of the flexible display panel. The spacer layer is magnetic or becomes magnetic when energized. When the flexible display module is in a rolled-up state, it is rolled into an N-layer rolled structure, where N is a positive integer. Along a first direction pointing from the center of the rolled structure, the projections of the spacer layers on any two adjacent layers in the rolled structure at least partially overlap, and a repulsive force at least parallel to the first direction is formed between the spacer layers on any two adjacent layers in the rolled structure. Under the action of the repulsive force, a certain gap is formed between any two adjacent layers in the rolled structure, i.e., they no longer contact each other, thereby effectively avoiding friction between any two adjacent layers in the rolled structure during the rolling process of the flexible display module, thus achieving better protection for the flexible display module.

[0052] The flexible display module provided in the embodiments of the present invention will be introduced first below.

[0053] Figure 1 This is a cross-sectional schematic diagram of the flexible display module provided in an embodiment of the present invention in a rolled-up state. Figure 1 As shown, the flexible display module 10 provided in this embodiment of the invention includes a flexible display panel 101 and a spacer layer 102. The flexible display panel 101 includes, but is not limited to, an organic light-emitting diode (OLED) display panel, a millimeter / sub-millimeter light-emitting diode (Mini LED) display panel, a micro light-emitting diode (Micro LED) display panel, or a quantum dot light-emitting diode (QLED) display panel.

[0054] The spacing layer 102 can be located at least on the backlight side of the flexible display panel 101. The spacing layer 102 is arranged on the backlight side of the flexible display panel 101, which has the advantage that the normal display of the flexible display panel 101 can be avoided, and the flexible display panel 101 has a better display effect. Of course, when the spacing layer 102 is transparent or semi-transparent, it can also be arranged on the light-emitting side of the flexible display panel 101. For example, in some specific examples, the spacing layer 102 can also be arranged on the non-display area of the light-emitting side of the flexible display panel 101, thereby avoiding shielding the normal display of the flexible display panel 101.

[0055] The spacing layer 102 itself can have magnetism or have magnetism when energized. Continue to refer to Figure 1 When the flexible display module 10 is in a rolled state, the flexible display module 10 can be rolled into an N-layer rolled structure 10a, that is, multiple turns, N being a positive integer. For ease of description, in the embodiments of the present application, 10a refers to an N-layer rolled structure, simply referred to as a rolled structure. Each layer (structure) in the rolled structure 10a can include part of the flexible display panel 101 and part of the spacing layer 102.

[0056] In a first direction Z pointing to the rolling center O along the rolled structure 10a, the projections of the spacing layers 102 on any two adjacent structures in the rolled structure 10a at least partially overlap, and the spacing layers 102 on any two adjacent structures in the rolled structure form a repulsive force at least parallel to the first direction Z. For example, the projection of the spacing layer 102 on the first layer structure (hereinafter referred to as the "first layer") in the rolled structure 10a at least partially overlaps the projection of the spacing layer 102 on the second layer structure (hereinafter referred to as the "second layer") in the rolled structure 10a, and the projection of the spacing layer 102 on the first layer and the projection of the spacing layer 102 on the second layer form a repulsive force at least parallel to the first direction Z. It should be noted that since the flexible display module 10 is rolled into a circular periphery, the first direction Z can be multiple directions, all pointing to the rolling center O.

[0057] Therefore, due to the repulsive force between the spacing layers 102 on any two adjacent structures in the rolled structure 10a at least parallel to the first direction Z, a certain spacing a will be formed between any two adjacent structures in the rolled structure under the action of the repulsive force, that is, any two adjacent structures in the rolled structure no longer contact, thereby effectively avoiding friction between any two adjacent structures in the rolled structure during rolling of the flexible display module, and better protection of the flexible display module is achieved.

[0058] Further, in an embodiment of the present application, the repulsive force formed between the spacing layers 102 on the odd-numbered layers (hereinafter referred to as "odd-numbered layers") in the curling structure 10a and the spacing layers 102 on the even-numbered layers (hereinafter referred to as "even-numbered layers") in the curling structure 10a is greater than the attractive force formed between the spacing layers 102 on the odd-numbered layers, such as the repulsive force formed between the spacing layers 102 on the first layer and the spacing layers 102 on the second layer being greater than the attractive force formed between the spacing layers 102 on the first layer and the spacing layers 102 on the third layer structure (hereinafter referred to as "third layer") in the curling structure 10a. Similarly, the repulsive force formed between the spacing layers 102 on the odd-numbered layers and the spacing layers 102 on the even-numbered layers is greater than the attractive force formed between the spacing layers 102 on the even-numbered layers, such as the repulsive force formed between the spacing layers 102 on the second layer and the spacing layers 102 on the third layer structure 10a being greater than the attractive force formed between the spacing layers 102 on the second layer and the spacing layers 102 on the fourth layer structure (hereinafter referred to as "fourth layer") in the curling structure 10a.

[0059] In this way, the flexible display module can avoid the attractive force that may be generated between the spacing layers 102 on the odd-numbered layers or between the spacing layers 102 on the even-numbered layers due to the close distance between the different layer structures in the curling structure 10a in the curled state, thereby further avoiding the friction between any two adjacent layer structures in the curling structure caused by such attractive force, and facilitating better protection of the flexible display module. This will be described in detail below. Figure 2 A cross-sectional view of the flexible display module provided by an embodiment of the present application in a flat state. Figure 3 Another cross-sectional view of the flexible display module provided by an embodiment of the present application in a curled state. Figure 2 As shown, according to some embodiments of the present application, the area of the spacing layers 102 on each layer structure in the curling structure 10a can decrease from the first layer to the Nth layer (hereinafter referred to as "Nth layer") in the curling structure 10a. For example, the area of the spacing layers 102 on the first layer is greater than the area of the spacing layers 102 on the second layer, the area of the spacing layers 102 on the second layer is greater than the area of the spacing layers 102 on the third layer, and so on, and the area of the spacing layers 102 on the N-1th layer (hereinafter referred to as "N-1th layer") in the curling structure 10a is greater than the area of the spacing layers 102 on the Nth layer.

[0060] The purpose of this is to: Figure 3As shown, the projection of the spacer layer 102 on the i-th layer of the curling structure 10a and the projection of the spacer layer 102 on the i+1-th layer of the curling structure can have an overlapping area greater than the overlapping area of the projection of the spacer layer 102 on the i-th layer of the curling structure and the projection of the spacer layer 102 on the i+2-th layer of the curling structure in the first direction Z of the curling structure 10a pointing to the curling center O when the flexible display module is in the curled state. Here, the i-th layer of the curling structure is any layer structure in the curling structure 10a, 1≤i≤N and i is an integer. For example, the projection of the spacer layer 102 on the first layer and the projection of the spacer layer 102 on the second layer can have an overlapping area greater than the overlapping area of the projection of the spacer layer 102 on the first layer and the projection of the spacer layer 102 on the third layer.

[0061] In this way, since the overlapping area of the projection of the spacer layer 102 on the first layer and the projection of the spacer layer 102 on the second layer is greater than the overlapping area of the projection of the spacer layer 102 on the first layer and the projection of the spacer layer 102 on the third layer, and the spacing between the first layer and the second layer is smaller than the spacing between the first layer and the third layer, the repulsive force formed between the spacer layer 102 on the first layer and the spacer layer 102 on the second layer is greater than the attractive force formed between the spacer layer 102 on the first layer and the spacer layer 102 on the third layer, and the repulsive force formed between the spacer layer 102 on the second layer and the spacer layer 102 on the third layer is also greater than the attractive force formed between the spacer layer 102 on the first layer and the spacer layer 102 on the third layer, thereby weakening the influence of the attractive force on the repulsive force, ensuring the formation of a spacing between the first layer and the second layer and ensuring the formation of a spacing between the second layer and the third layer, effectively avoiding friction between any two adjacent layer structures in the curling structure during the curling process of the flexible display module, and thereby achieving better protection of the flexible display module.

[0062] In some specific embodiments, optionally, the N-th layer is located on the side of the first layer away from the curling center O, i.e., the first layer is close to the curling center O, in the first direction Z of the curling structure 10a pointing to the curling center O. When the flexible display module is in the curled state, the overlapping area of the projections of the spacer layers on the adjacent two layer structures can decrease from the first layer to the N-th layer. For example, the overlapping area of the projection of the spacer layer 102 on the first layer and the projection of the spacer layer 102 on the second layer can be greater than the overlapping area of the projection of the spacer layer 102 on the second layer and the projection of the spacer layer 102 on the third layer, the overlapping area of the projection of the spacer layer 102 on the second layer and the projection of the spacer layer 102 on the third layer can be greater than the overlapping area of the projection of the spacer layer 102 on the third layer and the projection of the spacer layer 102 on the fourth layer, and so on.

[0063] In this way, the repulsive force between the spacer layer 102 on the odd-numbered layers and the spacer layer 102 on the even-numbered layers is greater than the attractive force between the spacer layers 102 on the odd-numbered layers. This ensures that there is a gap between any two adjacent layers in the rolled structure, effectively preventing friction between any two adjacent layers in the rolled structure during the rolling process of the flexible display module, thereby achieving better protection for the flexible display module.

[0064] Furthermore, in another embodiment of the present invention, the projections of the spacer layers 102 on different odd-numbered layers are made not to overlap, such as the projections of the spacer layers 102 on the first layer and the third layer are made not to overlap, so that no attraction is generated between the spacer layers 102 on different odd-numbered layers. Similarly, the projections of the spacer layers 102 on different even-numbered layers are made not to overlap, such as the projections of the spacer layers 102 on the second layer and the fourth layer are made not to overlap, so that no attraction is generated between the spacer layers 102 on different even-numbered layers.

[0065] This design avoids the suction forces that might occur between the spacer layers 102 on odd-numbered layers or even-numbered layers when the flexible display module is rolled up, due to the close proximity of different layers. This further prevents friction between any two adjacent layers in the rolled-up structure caused by such suction, thus better protecting the flexible display module. The details are explained below.

[0066] Figure 4 This is another cross-sectional schematic diagram of the flexible display module provided in an embodiment of the present invention in a rolled-up state. (See diagram below.) Figure 4 As shown, according to some embodiments of the present invention, optionally, when the flexible display module is in a rolled-up state, along the first direction Z pointing from the rolled-up structure 10a to the rolled-up center O, the projection of the spacer layer 102 on the i-th layer of the rolled-up structure may not overlap with the projection of the spacer layer 102 on the (i+2)-th layer of the rolled-up structure. For example, the projection of the spacer layer 102 on the first layer does not overlap with the projection of the spacer layer 102 on the third layer.

[0067] In this way, since the projections of the spacer layers 102 on different odd-numbered layers do not overlap, and the projections of the spacer layers 102 on different even-numbered layers do not overlap, no attraction is generated between the spacer layers 102 on different odd-numbered layers, and no attraction is generated between the spacer layers 102 on different even-numbered layers. This can eliminate the influence of attraction on repulsion, ensure that any two adjacent layers in the rolled structure form a gap, effectively avoid friction between any two adjacent layers in the rolled structure during the rolling process of the flexible display module, and thus achieve better protection for the flexible display module.

[0068] Figure 5 Another cross-sectional schematic view of the flexible display module in the flattened state is provided for embodiments of the present application. Figure 6 Another cross-sectional schematic view of the flexible display module in the flattened state is provided for embodiments of the present application. As shown in Figure 5 Alternatively Figure 6 As shown in some specific embodiments, the spacer layer 102 on the curling structure 10a can be arranged into at least one row along the first target direction W1 when the flexible display module is in the flattened state. The first target direction W1 can be perpendicular to the row direction X of the flexible display module. A portion of the spacer layer 102 on the i-th layer of the curling structure can be aligned with a portion of the spacer layer 102 on the (i+1)-th layer of the curling structure, or in other words, there is an overlap in the column direction Y. There is no overlap in the column direction Y between the spacer layer 102 on the i-th layer of the curling structure and the spacer layer on the (i+2)-th layer of the curling structure.

[0069] As shown in Figure 5 Alternatively Figure 6 As shown in the structure, when the flexible display module is in the curled state, the projection of the spacer layer 102 on the i-th layer of the curling structure and the projection of the spacer layer 102 on the (i+1)-th layer of the curling structure at least partially overlap in the first direction pointing to the curling center along the curling structure 10a, and the projection of the spacer layer 102 on the i-th layer of the curling structure and the projection of the spacer layer 102 on the (i+2)-th layer of the curling structure do not overlap.

[0070] In this way, since the projection of the spacer layer 102 on the i-th layer of the curling structure and the projection of the spacer layer 102 on the (i+2)-th layer of the curling structure do not overlap, the attraction force between the spacer layers 102 on different odd-numbered layers and the attraction force between the spacer layers 102 on different even-numbered layers can be eliminated, the influence of the attraction force on the repulsion force can be eliminated, and the spacing between any two adjacent layers in the curling structure can be ensured, so that friction between any two adjacent layers in the curling structure during the curling process of the flexible display module can be effectively avoided, and better protection of the flexible display module can be achieved.

[0071] Figure 7 Another cross-sectional schematic view of the flexible display module in the flattened state is provided for embodiments of the present application. Figure 8 Another cross-sectional schematic view of the flexible display module in the flattened state is provided for embodiments of the present application. As shown in Figure 7 Alternatively Figure 8As shown, in some specific embodiments, optionally, when the flexible display module is in the unfolded state, the spacers 102 on the curl structure 10a are arranged into at least two rows, wherein a part of the spacers 102 in one row are arranged along a first target direction W1, and a part of the spacers 102 in another row are arranged along a second target direction W2. The first target direction W1 and the second target direction W2 intersect, and both the first target direction W1 and the second target direction W2 intersect the row direction X of the flexible display module. A part of the spacers 102 on the i th layer of the curl structure can be aligned with a part of the spacers 102 on the i+1 th layer of the curl structure, or in other words, there is an overlap in the column direction Y. There is no overlap in the column direction Y between the spacers 102 on the i th layer of the curl structure and the spacers on the i+2 th layer of the curl structure.

[0072] Take Figure 7 Or Figure 8 As shown, when the flexible display module is in the curled state, along the first direction pointing to the curl center O of the curl structure 10a, the projection of the spacers 102 on the i th layer of the curl structure at least partially overlaps with the projection of the spacers 102 on the i+1 th layer of the curl structure, and the projection of the spacers 102 on the i th layer of the curl structure does not overlap with the projection of the spacers 102 on the i+2 th layer of the curl structure.

[0073] In this way, since the projection of the spacers 102 on the i th layer of the curl structure does not overlap with the projection of the spacers 102 on the i+2 th layer of the curl structure, there is no attraction force between the spacers 102 on different odd-numbered layers, and there is no attraction force between the spacers 102 on different even-numbered layers. The influence of the attraction force on the repulsion force can be eliminated, and it is ensured that a spacing is formed between any two adjacent layers in the curl structure, effectively avoiding friction between any two adjacent layers in the curl structure during the curling process of the flexible display module, and further realizing better protection of the flexible display module.

[0074] Figure 9 A local structure diagram of the spacers in the flexible display module provided by the embodiments of the present application is shown. In combination with Figure 1 And Figure 9 As shown, according to some embodiments of the present application, the spacer 102 can be provided with an electromagnet 201. The first magnetic pole of the electromagnet 201 in the spacer 102 can face the flexible display panel 101, and the second magnetic pole can face away from the flexible display panel 101. Alternatively, the second magnetic pole of the electromagnet 201 in the spacer 102 can face the flexible display panel 101, and the first magnetic pole can face away from the flexible display panel 101. Exemplarily, the first magnetic pole can be an N pole, and the second magnetic pole can be an S pole. Of course, the first magnetic pole can also be an S pole, and the second magnetic pole can also be an N pole, and the embodiments of the present application do not limit this.

[0075] In the curled state of the flexible display module 10, in any two adjacent layer structures in the curled structure 10a, the current direction of the electromagnet 201 in the spacing layer 102 on one layer structure is opposite to the current direction of the electromagnet 201 in the spacing layer 102 on the other layer structure. For example, the electromagnet 201 on the odd layer (such as the first layer and the third layer) can be supplied with a current in a first direction, and the electromagnet 201 on the even layer (such as the second layer and the fourth layer) can be supplied with a current in a second direction opposite to the first direction. Of course, the electromagnet 201 on the odd layer can be supplied with a current in the second direction, and the electromagnet 201 on the even layer can be supplied with a current in the first direction, which is not limited in the embodiments of the present application.

[0076] In this way, since the current direction of the electromagnet 201 in the spacing layer 102 on one layer structure is opposite to the current direction of the electromagnet 201 in the spacing layer 102 on the other layer structure in any two adjacent layer structures in the curled structure, the magnetic pole direction of the electromagnet 201 in any two adjacent layer structures in the curled structure is opposite, so that a repulsive force at least parallel to the first direction Z is generated between the spacing layers 102 on any two adjacent layer structures in the curled structure, so that a certain interval a is formed between any two adjacent layer structures in the curled structure under the action of the repulsive force, that is, any two adjacent layer structures in the curled structure are no longer in contact, thereby effectively avoiding friction between any two adjacent layer structures in the curled structure during the curling process of the flexible display module, and further achieving better protection of the flexible display module.

[0077] Figure 10 Another partial cross-sectional view of the flexible display module in the curled state is provided in the embodiments of the present application. As shown in Figure 10 According to some embodiments of the present application, the electromagnet 201 in the spacing layer 102 can be powered through the flexible display panel 101. Specifically, the flexible display panel 101 can be provided with a conductive trace L. The conductive trace L can extend to the spacing layer 102, and the conductive trace L can be electrically connected with the electromagnet 201 in the spacing layer 102. The conductive trace L can be used to power the electromagnet 201 in the spacing layer 102.

[0078] In the flat state of the flexible display module, the flexible display panel 101 can not power the electromagnet 201 in the spacing layer 102, so that the electromagnet 201 has no magnetism, which is convenient for the user to normally use the flexible display module.

[0079] When the flexible display module is in a rolled-up state, the flexible display panel 101 can supply power to the electromagnet 201 in the spacer layer 102 through the conductive trace L, thereby making the electromagnet 201 magnetic. This generates a repulsive force at least parallel to the first direction Z between the spacer layers 102 on any two adjacent layers in the rolled-up structure. Therefore, under the action of the repulsive force, a certain gap a will be formed between any two adjacent layers in the rolled-up structure, that is, the two adjacent layers in the rolled-up structure will no longer contact each other. This effectively avoids friction between any two adjacent layers in the rolled-up structure during the rolling process of the flexible display module, thereby achieving better protection for the flexible display module.

[0080] Figure 11 This is a top view schematic diagram of the flexible display module provided in an embodiment of the present invention in a flattened state. Figure 11 As shown, according to some embodiments of the present invention, the flexible display module 10 may optionally include at least one first region 401 and at least one second region 402 spaced apart along the curling direction X. The curling direction X may be the length direction of the flexible display module 10. The first region 401 and the second region 402 may be alternately distributed. For example, along the curling direction X, the first, third, and fifth regions of the flexible display module are all first regions 401, and the second, fourth, and sixth regions of the flexible display module are all second regions 402.

[0081] Combination Figure 1 and Figure 11 As shown, when the flexible display module 10 is in a rolled-up state, one of the first region 401 and the second region 402 forms an odd-numbered layer in the rolled-up structure 10a, and the other forms an even-numbered layer in the rolled-up structure 10a. For example, this embodiment of the invention will be described with the first region 401 forming an odd-numbered layer structure and the second region 402 forming an even-numbered layer structure.

[0082] The different first regions 401 can be the same size or different sizes. In some specific embodiments, the first first region 401 is closest to the curling center, that is, closest to the roll. During curling, the first first region 401 is on the innermost side, and the nth first region 401 is on the outermost side, where n is a positive integer. For example, the second first region 401 can be used to form the third layer, and the third first region 401 can be used to form the fifth layer structure in the curled structure 10a.

[0083] Similarly, the sizes of the different second regions 402 can be the same or different. In some specific embodiments, for example, the second second region 402 can be used to form the fourth layer, and the third second region 402 can be used to form the sixth layer structure in the curled structure 10a.

[0084] Both the first region 401 and the second region 402 can be provided with a spacer layer 102. For example... Figure 4 As shown, in some examples, the spacer layer 102 can completely cover the first region 401 and / or the second region 402. Since the first region 401 and / or the second region 402 completely cover the spacer layer 102, the area of ​​the spacer layer 102 is relatively large. This allows for a greater repulsive force between the spacer layers 102 on any two adjacent layers in the rolled-up structure, effectively ensuring that no two adjacent layers in the rolled-up structure come into contact. This effectively avoids friction between any two adjacent layers in the rolled-up structure during the flexible display module's rolling process, thus achieving better protection for the flexible display module.

[0085] Figure 12 This is another partial cross-sectional view of the flexible display module provided in an embodiment of the present invention in a flattened state. (See attached image.) Figure 12 As shown, according to some embodiments of the present invention, the spacer layer 102 may optionally be provided with a permanent magnet 601. The magnetic pole orientation of the permanent magnet 601 in the first region 401 may be opposite to that of the permanent magnet 601 in the second region 402.

[0086] For example, the first magnetic pole c1 of the permanent magnet 601 in the first region 401 can face the flexible display panel 101, and the second magnetic pole c2 of the permanent magnet 601 in the first region 401 can face away from the flexible display panel 101. The first magnetic pole c1 of the permanent magnet 601 in the second region 402 can face away from the flexible display panel, and the second magnetic pole c2 of the permanent magnet 601 in the second region 402 can face the flexible display panel.

[0087] Thus, when the flexible display module 10 is in a rolled-up state, in any two adjacent layers of the rolled-up structure, the first magnetic pole c1 of the permanent magnet 601 on one layer is opposite to the first magnetic pole c1 of the permanent magnet 601 on the other layer, or the second magnetic pole c2 of the permanent magnet 601 on one layer is opposite to the second magnetic pole c2 of the permanent magnet 601 on the other layer. This generates a repulsive force at least parallel to the first direction Z between any two adjacent layers of the rolled-up structure. Therefore, under the action of the repulsive force, a certain gap a will be formed between any two adjacent layers of the rolled-up structure, that is, the two adjacent layers of the rolled-up structure will no longer contact each other. This effectively avoids friction between any two adjacent layers of the rolled-up structure during the rolling process of the flexible display module, thereby achieving better protection for the flexible display module.

[0088] Combination Figure 9 and Figure 11As shown, according to some other embodiments of the present application, the spacing layer 102 can be optionally provided with electromagnets 201. When the flexible display module 10 is in the rolled state, the electromagnets 201 in the first region 401 can be supplied with current in a first direction, and the electromagnets 201 in the second region 402 can be supplied with current in a second direction, which is opposite to the first direction. It should be noted that the introduction of the first direction and the second direction is only for the purpose of illustrating that the electromagnets 201 in the first region 401 and the electromagnets 201 in the second region 402 are supplied with current in different directions, and does not represent the actual physical direction.

[0089] Thus, since the current direction of the electromagnets 201 in the spacing layer 102 in the first region 401 is opposite to the current direction of the electromagnets 201 in the spacing layer 102 in the second region 402, the magnetic pole direction of the electromagnets 201 in any two adjacent layer structures in the rolled structure is opposite, so that repulsion at least parallel to the first direction Z is generated between the spacing layers 102 on any two adjacent layer structures in the rolled structure, so that under the action of the repulsion, a certain spacing a is formed between any two adjacent layer structures in the rolled structure, i.e., any two adjacent layer structures in the rolled structure no longer contact, thereby effectively avoiding friction between any two adjacent layer structures in the rolled structure during rolling of the flexible display module, and further achieving better protection of the flexible display module.

[0090] Figure 13 Another kind of partial cross-sectional view of the flexible display module in the unfolded state is provided for the embodiments of the present application. As shown in Figure 13 As shown, in some specific embodiments, the flexible display panel 101 can be optionally provided with conductive traces L. The conductive traces L can include first conductive traces L1 and second conductive traces L2, the first conductive traces L1 can be electrically connected with a positive voltage terminal (not shown in the figure) in the flexible display panel 101, and the second conductive traces L2 can be electrically connected with a negative voltage terminal (not shown in the figure) or a ground terminal (not shown in the figure).

[0091] The first end d1 of the electromagnets 201 in the first region 401 can be electrically connected with the first conductive traces L1, and the second end d2 of the electromagnets 201 in the first region 401 can be electrically connected with the second conductive traces L2. The first end d1 of the electromagnets 201 in the second region 402 is electrically connected with the second conductive traces L2, and the second end d2 of the electromagnets 201 in the second region 402 is electrically connected with the first conductive traces L1.

[0092] Exemplarily, the first end d1 of the electromagnet 201 can be an end of the electromagnet 201 facing the flexible display panel 101, and the second end d2 of the electromagnet 201 can be an end of the electromagnet 201 facing away from the flexible display panel 101. Of course, the first end d1 of the electromagnet 201 can also be an end of the electromagnet 201 facing away from the flexible display panel 101, and the second end d2 of the electromagnet 201 can be an end of the electromagnet 201 facing the flexible display panel 101, and the embodiments of the present application do not make any limitation in this regard.

[0093] In the first region 401, the current provided by the first conductive trace L1 flows in via the first end d1 of the electromagnet 201 and flows out via the second end d2 of the electromagnet 201. In the second region 402, the current provided by the first conductive trace L1 flows in via the second end d2 of the electromagnet 201 and flows out via the first end d1 of the electromagnet 201. Therefore, the current direction of the electromagnet 201 in the spacing layer 102 of the first region 401 is opposite to the current direction of the electromagnet 201 in the spacing layer 102 of the second region 402.

[0094] In this way, since the current direction of the electromagnet 201 in the spacing layer 102 of the first region 401 is opposite to the current direction of the electromagnet 201 in the spacing layer 102 of the second region 402, the magnetic pole direction of the electromagnet 201 in any two adjacent layer structures in the curling structure is opposite, so that repulsion at least parallel to the first direction Z is generated between the spacing layers 102 on any two adjacent layer structures in the curling structure, so that under the action of the repulsion, a certain spacing a is formed between any two adjacent layer structures in the curling structure, i.e., any two adjacent layer structures in the curling structure no longer contact, thereby effectively avoiding friction between any two adjacent layer structures in the curling structure during the curling process of the flexible display module, and further achieving better protection of the flexible display module.

[0095] Figure 14 Another partial cross-sectional view of the flexible display module in a flattened state is provided by the embodiments of the present application. As shown in FIG. 4B, the flexible display module in a flattened state includes a flexible display panel 101, a first conductive trace L1, a second conductive trace L2, a third conductive trace L3, a fourth conductive trace L4, a first electromagnet 201, a second electromagnet 202, a third electromagnet 203, a fourth electromagnet 204, a first spacing layer 102, a second spacing layer 103, a third spacing layer 104, and a fourth spacing layer 105. Figure 14As shown, according to some embodiments of the present application, the flexible display module 10 can optionally further include a back protection film (BPF) 801 and a bending-resistant layer 802. The back protection film 801 can be located between the flexible display panel 101 and the spacing layer 102 in the thickness direction of the flexible display module. The back protection film 801 is mainly used to support and protect the flexible display panel 101. The bending-resistant layer 802 can be located between the back protection film 801 and the spacing layer 102 in the thickness direction of the flexible display module. The spacing layer 102 can be arranged on the surface of the bending-resistant layer 802 away from the back protection film 801. The flexible display module 10 has a rolled state and a flattened state, and the length of the bending-resistant layer 802 in the rolled state can be equal to the length of the bending-resistant layer 802 in the flattened state.

[0096] Exemplarily, the bending-resistant layer 802 can be made of bendable metal, metal alloy, glass or polymer. Specifically, the metal can be steel use stainless (SUS) or copper, the polymer can be carbon fiber, and the glass can be ultra thin glass (UTG).

[0097] When the flexible display module 10 is in the rolled state, the length of the bending-resistant layer 802 is fixed and does not change, which improves the bending-resistant ability of the bending-resistant layer 802, thereby improving the overall stress uniformity of the flexible display module to reduce the risk of device and adhesive falling off.

[0098] Continuing to refer to Figure 14 According to some embodiments of the present application, the flexible display module 10 can optionally further include a first optically clear adhesive (OCA) layer 803, a second OCA layer 804 and a cover window film (CWF) 805. The first OCA layer 803 can be located between the flexible display panel 101 and the back protection film 801 in the thickness direction of the flexible display module. The cover window film 805 can be located on the side of the flexible display panel 101 away from the first OCA layer 803. The second OCA layer 804 can be located between the cover window film 805 and the flexible display panel 101. It should be noted that the flexible display module 10 can further include other film layers, such as a touch layer, which is not limited by the embodiments of the present application.

[0099] Figure 15 Another partial cross-sectional view of the flexible display module in the flattened state is provided for the embodiments of the present application. As shown in Figure 15As shown, according to some embodiments of the present application, optionally, the flexible display module 10 can further comprise a tensile-resistant component 901 located at at least one end of the flexible display module in the rolling direction X, the tensile-resistant component 901 can be arranged to extend along the stacking direction of the flexible display module, and is fixedly connected with the flexible display panel 101, the back support layer 801 and the anti-bending layer 802.

[0100] Specifically, when the flexible display module 10 is rolled, due to the thickness difference between the bottom layer and the top layer of the flexible display module 10, when the number of rolling turns is relatively large, the film layer structure of the display module before and after rolling will slip, affecting the service life of the flexible display module 10. By arranging the tensile-resistant component 901 at the end of the rolling direction of the flexible display module 10, the tensile-resistant component 901 is used to block the slip of the film layer, which can reduce the slip stress in the rolling process and improve the service life of the tensile-resistant component 901.

[0101] Exemplarily, the tensile-resistant component 901 can be a stress buffer rubber with a certain elasticity. In this way, the tensile-resistant component 901 can absorb the slip stress, block the slip of the film layers of the flexible display module, and have a certain protective effect on the film layers of the flexible display module.

[0102] Based on the flexible display module 10 provided in the above embodiments, correspondingly, the present application further provides a flexible display device comprising the flexible display module 10 provided by the present application. Please refer to Figure 16 , Figure 16 A structural schematic diagram of the flexible display device provided by the embodiments of the present application. Figure 16 The flexible display device 1000 provided comprises the flexible display module 10 and the reel 12 provided by any one of the above embodiments of the present application, and one end of the flexible display module 10 can be fixed on the reel 12. Figure 16 The embodiments are described by taking a mobile phone as an example, and it can be understood that the flexible display device provided by the embodiments of the present application can be a wearable product, a computer, a television, a vehicle-mounted display device, or other flexible display devices with display functions, and the present application does not make specific limitations thereon. The flexible display device provided by the embodiments of the present application has the beneficial effects of the flexible display module 10 provided by the embodiments of the present application, and specific descriptions can be referred to the specific descriptions of the flexible display module 10 in the above embodiments, which will not be described herein.

[0103] It should be understood that the cross-sectional structure of the flexible display module 10 provided by the drawings of the embodiments of the present application is only some examples, and is not used to limit the present application. In addition, the above embodiments provided by the present application can be combined with each other without contradiction.

[0104] It is to be understood that the embodiments described herein are merely exemplary and that a person skilled in the art can make many modifications and variations thereto without departing from the scope of the application. The embodiments have been chosen and described so as to explain the principles of the application and the practical application thereof and to enable one skilled in the art to utilize the application and various embodiments with various modifications as are suited to the particular use contemplated. Nothing in this specification should be considered as limiting the application as the claims presented below purport to define the scope of the application in accordance with the full scope and range of equivalents thereto.

[0105] It will be understood by those skilled in the art that the above-described embodiments are merely exemplary and not limiting. The various technical features appearing in the different embodiments can be combined to achieve beneficial effects. Other embodiments of the disclosed embodiments can be understood and implemented by those skilled in the art based on the drawings, the specification and the claims. In the claims, the term "comprising" does not exclude other structures; the number relating to "one" does not exclude a plurality; the terms "first", "second" are used to distinguish names and not to denote any particular order. Any reference signs in the claims should not be understood as limiting the scope of protection. The fact that certain technical features appear in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A flexible display module, characterized in that, The flexible display module comprises: a flexible display panel; a spacer layer located at least on the backlight side of the flexible display panel, the spacer layer itself having magnetism or having magnetism when energized; when the flexible display module is in a rolled state, the flexible display module is rolled into a N-layer rolled structure, N being a positive integer, in a first direction of the rolled structure pointing to a rolling center, the projections of the spacer layers on any two adjacent layers in the rolled structure at least partially overlap, and a repulsive force is formed between the spacer layers on any two adjacent layers in the rolled structure at least along the first direction; the flexible display module comprises at least one first region and at least one second region distributed at intervals along the rolling direction, one of the first region and the second region forming an odd number of layers in the rolled structure and the other forming an even number of layers in the rolled structure when the flexible display module is in a rolled state; the first region and the second region are both provided with the spacer layer, and the spacer layer completely covers the first region and / or the second region; the spacer layer is provided with a permanent magnet, a first magnetic pole of the permanent magnet in the first region faces the flexible display panel, a second magnetic pole of the permanent magnet in the first region faces away from the flexible display panel, the first magnetic pole of the permanent magnet in the second region faces away from the flexible display panel, and the second magnetic pole of the permanent magnet in the second region faces the flexible display panel.

2. The flexible display module according to claim 1, wherein when the flexible display module is in a rolled state, in a first direction of the rolled structure pointing to a rolling center, the projection of the spacer layer on the i-th layer of the rolled structure does not overlap with the projection of the spacer layer on the i+2-th layer of the rolled structure, or the overlapping area of the projection of the spacer layer on the i-th layer with the projection of the spacer layer on the i+1-th layer of the rolled structure is greater than the overlapping area of the projection of the spacer layer on the i-th layer structure with the projection of the spacer layer on the i+2-th layer structure, 1≤i≤N and i is an integer.

3. The flexible display module according to claim 2, wherein in the first direction of the rolled structure pointing to the rolling center, the N-th layer of the rolled structure is located on the side away from the rolling center of the 1-th layer of the rolled structure; when the flexible display module is in a rolled state, from the 1-th layer of the rolled structure to the N-th layer of the rolled structure, the overlapping area of the projections of the spacer layers on the adjacent two layers in the rolled structure decreases.

4. The flexible display module of claim 1, wherein, when the flexible display module is in an unfolded state, the spacer layers on the rolled structure are arranged into at least one row in a first target direction, and the first target direction intersects the row direction of the flexible display module. In the coiled state, the projection of the spacer layer on the i-th layer of the coiled structure at least partially overlaps with the projection of the spacer layer on the (i+1)-th layer of the coiled structure, and the projection of the spacer layer on the i-th layer of the coiled structure does not overlap with the projection of the spacer layer on the (i+2)-th layer of the coiled structure. 5.The flexible display module of claim 1, wherein, In the flat state, the spacer layers on the coiled structure are arranged into at least two rows, wherein a portion of the spacer layers are arranged along a first target direction, and another portion of the spacer layers are arranged along a second target direction, the first target direction and the second target direction intersect, and the first target direction and the second target direction both intersect with the row direction of the flexible display module. In the coiled state, the projection of the spacer layer on the i-th layer of the coiled structure at least partially overlaps with the projection of the spacer layer on the (i+1)-th layer of the coiled structure, and the projection of the spacer layer on the i-th layer of the coiled structure does not overlap with the projection of the spacer layer on the (i+2)-th layer of the coiled structure. 6.The flexible display module of claim 1, wherein, The flexible display module further comprises: a back support layer between the flexible display panel and the spacer layer; a bend-resistant layer between the back support layer and the spacer layer; the spacer layer is arranged on the surface of the bend-resistant layer away from the back support layer.

7. The flexible display module of claim 6, wherein, The flexible display module further comprises: a stretch-resistant component at at least one end in the coiling direction of the flexible display module, the stretch-resistant component is arranged to extend in the stacking direction of the flexible display module, and is fixedly connected with the flexible display panel, the back support layer, and the bend-resistant layer. 8.A flexible display device, characterized by, The flexible display module as claimed in any one of claims 1-7.

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