CN220041311U - Flexible display module and flexible display device - Google Patents

Abstract

The utility model provides a flexible display module and a flexible display device. The first support piece is arranged between the first part and the scroll and comprises a plurality of support sub-parts which are arranged at intervals. In the embodiment of the utility model, the plurality of support sub-parts are arranged at intervals, so that a clearance space is formed between the adjacent support sub-parts, and the existence of the clearance space can improve the stretching deformation capacity of the first support piece. The design enables the flexible display module to be deformed and bent more smoothly in the process of converting the storage state and the unfolding state, and therefore smoothness of sliding and rolling of the flexible display module is improved.

Description

Flexible display module and flexible display device

Technical Field

The utility model relates to the technical field of display equipment, in particular to a flexible display module and a flexible display device.

Background

With the development of display technology, users have also put various demands on display devices. In order to meet different use requirements, various display products having different characteristics are also produced. Among them, consumers now seek not only a simple large screen but also a flexible display device that can better meet the requirements of portability and reliability while realizing a large screen, and thus size-adjustable ones.

Disclosure of Invention

The embodiment of the utility model provides a flexible display module and a flexible display device, which can improve the smoothness of a slide roll.

In a first aspect, an embodiment of the present utility model provides a flexible display module, having an extended state and a stored state, where the flexible display module includes a spool, a flexible screen, and a first support, the spool being capable of rotating about an axis direction of the spool, the flexible screen including a first portion, and the first portion being capable of winding and moving relative to the spool during a transition between the extended state and the stored state. The first support piece is arranged between the first part and the scroll and comprises a plurality of support sub-parts which are arranged at intervals.

In some embodiments, the flexible screen further comprises a second portion connected side-by-side with the first portion, and the flexible display module further comprises a second support disposed between the second portion and the reel. The first support piece and the second support piece act together to further improve the shock resistance of the flexible screen and improve the use safety of the flexible display module.

In some embodiments, the second support is a planar structure and the second support covers the second portion in an orthographic projection of the flexible screen. The second part can be supported by the second supporting piece at all positions, so that the supporting effect of the second supporting piece on the second part is improved.

In some embodiments, at least a portion of the support sub-portion is connected to the second support. Therefore, the risk of relative movement of the support sub-part is reduced, and the overall reliability of the flexible display module is improved.

In some embodiments, the first support and the second support are an integrally formed structure. The design can reduce the preparation difficulty of the first support piece and the second support piece, improve the preparation effect of the first support piece and the second support piece, and is beneficial to mass production and manufacture.

In some embodiments, in the deployed state, the plurality of support sub-portions extend in a first direction and are spaced apart in a second direction. The first portion and the second portion are disposed side by side in the first direction, the first direction intersecting the second direction. This can improve the ductility of the flexible display module in the sliding curl direction thereof. Meanwhile, the plurality of support sub-parts are arranged at intervals in the second direction, so that the smoothness of the sliding roll of the flexible display module can be improved.

In some embodiments, the support sub-portion comprises a straight line segment and/or the support sub-portion comprises a curved line segment.

In some embodiments, the support sub-portion extends in a first direction. This design can further improve the ductility of the flexible display module assembly in its sliding crimping direction, and can improve the stability of the flexible display module assembly in the first direction.

In some embodiments, in the deployed state, the plurality of support sub-portions extend in a second direction and are spaced apart in a first direction, the first portion and the second portion being disposed side-by-side in the first direction, the first direction intersecting the second direction.

In some embodiments, the first portion includes a first region and a second region on either side of the first region in the second direction, the weight of the first support at the first region being less than the weight of the first support at the second region. The first supporting piece can draw the flexible screen from the edge position, so that the risk of swelling of the flexible screen is reduced, and the flatness of the flexible display module in the unfolded state is ensured

In some embodiments, at least a portion of the support sub-portion includes a plurality of support segments spaced apart in the second direction, the support segments being located within the second region. The design is such that the weight of the first support corresponding to the second area is greater than the weight of the first support corresponding to the first area. The risk of bulging of the flexible screen is reduced.

In some embodiments, the flexible screen has a virtual straight line parallel to the first direction and passing through a center of the flexible screen, and the orthographic projections of the plurality of support segments on the flexible screen are axisymmetrically distributed with respect to the virtual straight line. The design ensures that the stress on two sides of the flexible screen is relatively uniform, and reduces the probability of uneven tilting of one side of the flexible screen in the use process of the flexible display module.

In some embodiments, the average thickness of the first support at the location corresponding to the first region is less than the average thickness of the first support at the location corresponding to the second region. Therefore, the risk of bulging of the flexible screen can be reduced, and the flatness of the flexible display module in the unfolded state is ensured.

In some embodiments, the thickness of the first support member is in a gradual increasing trend in a direction from the first region toward the second region.

In some embodiments, the material density at the first support corresponding to the first region is less than the material density at the first support corresponding to the second region.

In some embodiments, the number of support sub-portions of the first support corresponding to the first region is less than the number of support sub-portions of the first support corresponding to the second region. The design makes the weight of the first supporting piece corresponding to the first area smaller than that of the first supporting piece corresponding to the second area, so that the risk of swelling of the flexible screen can be reduced, and the flatness of the flexible display module in the unfolded state is ensured.

In some embodiments, in the deployed state, the plurality of support sub-portions are disposed at intervals in the second direction, and the spacing between adjacent support sub-portions in the second direction tends to decrease gradually in a direction from the first region toward the second region. The design ensures that the plurality of support sub-parts of the first support piece corresponding to the second area are distributed more densely, thereby increasing the number of the support sub-parts corresponding to the second area, increasing the weight of the first support piece corresponding to the second area and ensuring the flatness of the flexible display module in the unfolded state.

In some embodiments, the flexible display module further includes an adhesive portion disposed between adjacent support sub-portions, the adhesive portion connecting the adjacent support sub-portions, the adhesive portion being connected to the flexible screen. The bonding part can realize bonding fixation between adjacent support sub-parts, so that the probability of relative displacement between different support sub-parts in the use process of the flexible display module is reduced.

In a second aspect, an embodiment of the present utility model provides a flexible display device, including a flexible display module according to any one of the foregoing embodiments.

The embodiment of the utility model provides a flexible display module and a flexible display device, wherein a plurality of support sub-parts are arranged at intervals, so that a clearance space is formed between adjacent support sub-parts, and the existence of the clearance space can improve the stretching deformation capacity of a first support piece. The design enables the flexible display module to be deformed and bent more smoothly in the process of converting the storage state and the unfolding state, and therefore smoothness of sliding and rolling of the flexible display module is improved.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are needed to be used in the embodiments of the present utility model will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a flexible display module in a storage state according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a flexible display module in an unfolded state according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a first support member in a flexible display module according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a structure of a first support member of another flexible display module according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a first support member in a flexible display module according to another embodiment of the present utility model;

fig. 6 is a schematic diagram of a positional relationship between a first support member and a flexible screen in a flexible display module according to another embodiment of the present utility model;

fig. 7 is a schematic diagram of a positional relationship between a first support member and a flexible screen in a flexible display module according to another embodiment of the present utility model;

fig. 8 is a schematic structural view of a first support member in a flexible display module according to another embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a flexible display device according to an embodiment of the present utility model.

Marking:

10. a reel;

20. a flexible screen; 21. a first portion; 211. a first region; 212. a second region; 22. a second portion;

30. a first support; 31. a support sub-section; 311. a support section;

40. a second support;

50. an adhesive part;

l, a virtual straight line;

x, a first direction; y, second direction.

Detailed Description

Features and exemplary embodiments of various aspects of the present utility model will be described in detail below, and in order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the utility model only and not limiting. It will be apparent to one skilled in the art that the present utility model may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the utility model by showing examples of the utility model.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

Along with the progress of technology, the requirements of people on the display device are higher, so that not only are the higher requirements on the display effect of the display device provided, but also the portability of the display device is provided. On this basis, flexible display devices of variable size have been developed. However, the inventor has found through long-term research that the conventional flexible display device is easy to cause problems such as slipping, winding, clamping and the like due to the limitation of an internal structure in the process of switching between a storage state and a flattening state, which is not beneficial to the use experience of a user.

In order to solve the above-mentioned problems, referring to fig. 1 to 3, in one aspect, an embodiment of the present utility model provides a flexible display module having an unfolded state and a stored state, the flexible display module includes a reel 10, a flexible screen 20 and a first support member 30, the reel 10 can rotate around an axis direction thereof, the flexible screen 20 includes a first portion 21, and the first portion 21 is windingly moved relative to the reel 10 during the conversion of the unfolded state and the stored state of the flexible display module. The first support 30 is disposed between the first portion 21 and the spool 10, and the first support 30 includes a plurality of support sub-portions 31 disposed at intervals.

The flexible display module is at least provided with two states of an unfolding state and a storage state, the area of the flexible display module, which can display the picture, is larger in the unfolding state, so that the display effect can be improved, and the area of the flexible display module, which can display the picture, is smaller in the storage state, so that the storage requirement can be met. It should be noted that, in the storage state, the flexible display module may have a partial structure for realizing the display effect, or may not have an area capable of displaying a picture, which is not limited in the embodiment of the present utility model.

The flexible screen 20 is a main component for realizing a display function in the flexible display module, and when the flexible display module is used, corresponding image information needs to be transferred to the flexible screen 20 and displayed through the flexible screen 20. Typically, the flexible screen 20 includes a plurality of stacked film structures, and illustratively, the flexible screen 20 may include a driving device layer, a light emitting layer, an encapsulation layer, and the like.

The reel 10 can drive the flexible screen 20 to wind around its axis direction and remove, and under the state of accomodating, at least part structure in the flexible screen 20 can curl around the reel 10 to at least part can hide in the flexible screen 20 in flexible display module assembly inside, thereby reduce flexible display module assembly's overall dimension, conveniently carry and shift. In the process that the flexible display module is converted from the storage state to the unfolding state, the first part 21 in the flexible screen 20 can be coiled and moved relative to the scroll 10, and part of the structure in the flexible screen 20 can be exposed from the inside of the flexible display module, so that the size of a displayable picture in the flexible display module can be increased.

It should be noted that, the flexible screen 20 may only include the first portion 21, that is, in the process of converting the flexible display module from the storage state to the unfolding state, the whole structure of the flexible screen 20 may be rolled and moved relative to the reel 10, and in the storage state, the flexible screen 20 cannot achieve the display effect. Or in other alternative embodiments, the flexible screen 20 may further include a second portion 22, where the second portion 22 does not wind around the reel 10 during the transition between the unfolded state and the stored state of the flexible display module, and where the second portion 22 in the flexible screen 20 still achieves the display effect.

The first support 30 is disposed between the first portion 21 and the spool 10, in other words, the first support 30 is located on the backlight side of the flexible screen 20. The first support 30 is capable of moving synchronously with the first portion 21 and of winding movement with respect to the reel 10 during the transition of the flexible display module from the housed condition to the deployed condition. In the unfolded state, the first supporting member 30 can support the first portion 21, so that the probability of bending deformation of the first portion 21 is reduced, and the display reliability is improved.

In general, the structure for supporting the first portion 21 is a continuous planar structure, but the inventors have found through long-term studies that: the stretching deformation capability of the planar supporting structure is generally lower, and the planar supporting structure is easy to generate certain obstruction to the expansion or contraction of the flexible display module, and also can generate stress on the flexible screen 20, so that the problems of slipping, rolling, clamping and the like of the flexible display module in the conversion process of the storage state and the expansion state are caused, and the use experience of a user is not facilitated.

On this basis, the embodiment of the present utility model provides the first support 30 to include a plurality of support sub-portions 31 arranged at intervals. The support sub-portion 31 has various shapes, and the support sub-portion 31 may have a bar-shaped structure or a block-shaped structure such as a circular or square shape. And the plurality of support sub-portions 31 may be disposed at intervals in the first direction X or may be disposed at intervals in the second direction Y, which is not limited in the embodiment of the present utility model. The first direction X may be a direction of expansion or contraction of the flexible display module, and the second direction Y intersects with the first direction X.

In the embodiment of the present utility model, by arranging the plurality of support sub-portions 31 at intervals, a gap space is formed between the adjacent support sub-portions 31, and the presence of the gap space can enhance the tensile deformation ability of the first support 30. The design enables the flexible display module to be deformed and bent more smoothly in the process of converting the storage state and the unfolding state, so that the smoothness of the sliding roll of the flexible display module is improved.

In some embodiments, as shown in fig. 1-3, the flexible screen 20 further includes a second portion 22 connected side-by-side with the first portion 21, and the flexible display module further includes a second support 40 disposed between the second portion 22 and the spool 10.

The flexible screen 20 comprises at least two parts, a first part 21 and a second part 22, the first part 21 and the second part 22 being arranged side by side in a first direction X. In the process of converting the unfolding state and the storage state of the flexible display module, the first part 21 is gradually wound into the interior of the flexible display module, and the second part 22 is always in an exposed state. And in the storage state, the second portion 22 can still display a specific screen to meet the display requirement in the storage state.

The embodiment of the present utility model is not limited with respect to the relative relationship between the first portion 21 and the second portion 22 and the dimensional relationship. Illustratively, the first portion 21 and the second portion 22 are integrally formed together, the film structures within the two are substantially identical, and the first portion 21 may be sized larger, smaller, or smaller than the second portion 22.

In order to improve the reliability of the second portion 22, the flexible display module further includes a second support member 40 disposed between the second portion 22 and the reel 10, the second support member 40 being located at a backlight side of the second portion 22 for supporting the second portion 22.

The embodiment of the present utility model is not limited with respect to the structural form of the second supporting member 40. The second support member 40 may be a continuous planar structure, or may include a plurality of support portions disposed at intervals. In addition, as shown in fig. 4, the first supporting member 30 and the second supporting member 40 may be connected to each other, or as shown in fig. 3, the first supporting member 30 and the second supporting member 40 may be spaced apart from each other, and the specific relationship between the two needs to be determined according to actual needs, which is not limited in the embodiment of the present utility model.

In the embodiment of the present utility model, the first supporting member 30 plays a role in supporting the first portion 21, the second supporting member 40 plays a role in supporting the second portion 22, and the combined action of the first supporting member 30 and the second supporting member 40 can further improve the impact resistance of the flexible screen 20 and improve the use safety of the flexible display module.

In some embodiments, the second support 40 is a planar structure and an orthographic projection of the second support 40 onto the flexible screen 20 covers the second portion 22.

As can be seen from the foregoing, the first portion 21 of the flexible screen 20 is deformed by curling and the second portion 22 is not deformed by curling during the transition between the unfolded state and the storage state of the flexible display module. Further, the second support 40 for supporting the second portion 22 is not completely deformed as such, and thus there is no need to improve the stretch-deformation ability of the second support 40.

On this basis, the embodiment of the utility model sets the second supporting member 40 for supporting the second portion 22 to a planar structure, and enables the orthographic projection of the second supporting member 40 on the flexible screen 20 to completely cover the second portion 22, so that the second supporting member 40 can be supported at each position of the second portion 22, thereby improving the supporting effect of the second supporting member 40 on the second portion 22.

In some embodiments, as shown in fig. 4, at least a portion of the support sub-portion 31 is connected to the second support 40.

In the embodiment of the present utility model, all the support sub-portions 31 may be connected to the second support member 40, or only a part of the support sub-portions 31 may be connected to the second support member 40. The connection between the support sub-portion 31 and the second support member 40 is not limited in the embodiment of the present utility model. Illustratively, the support sub-portion 31 may be attached to the second support member 40 by bonding or welding, or the like.

The embodiment of the present utility model can ensure the reliability of the relative position of at least part of the sub-strut 31 by connecting at least part of the sub-strut 31 to the second support 40. The risk of relative movement of the support sub-portion 31 is reduced, and the overall reliability of the flexible display module is improved.

In some embodiments, the first support 30 and the second support 40 are an integrally formed structure.

The first support 30 and the second support 40 are made of the same material, and are formed together. Illustratively, a plurality of spaced apart support sub-portions 31 may be formed by an etching process. This design can reduce the difficulty in preparing the first support 30 and the second support 40, and improve the preparation effect of the first support and the second support, which is beneficial to mass production and manufacture.

In some embodiments, in the deployed state, the plurality of support sub-portions 31 extend in the first direction X and are spaced apart in the second direction Y. Illustratively, the first direction X and the second direction Y are perpendicular to each other.

In the conversion process of the storage state and the unfolding state, the size of the flexible display module in the first direction X can be changed. Specifically, the flexible display module increases in size in the first direction X during the transition from the stowed state to the deployed state; the flexible display module is reduced in size in the first direction X during the transition from the deployed state to the stowed state.

The support sub-portion 31 may have a linear bar-like structure, or may have a curved or other structure. It should be noted that, when the supporting sub-portion 31 is curved or has other structures, the extending direction of the supporting sub-portion 31 is the connecting line direction of the opposite ends of the supporting sub-portion 31. The support sub-portion 31 extends in the first direction X, and the support effect thereof on the first portion 21 in the first direction X can be ensured, and alternatively, the size of the support sub-portion 31 in the first direction X is not smaller than the size of the first portion 21 in the first direction X.

Further, the plurality of support sub-portions 31 are arranged at intervals in the second direction Y, and the pitches at different positions in the extending direction may be the same or different for the adjacent two support sub-portions 31. And the average spacing between any adjacent support sub-portions 31 may be the same or different for different support sub-portions 31.

In the embodiment of the present utility model, the ductility of the flexible display module in the sliding curl direction thereof is improved by providing the support sub-portion 31 to extend in the first direction X. Meanwhile, the plurality of support sub-portions 31 are arranged at intervals in the second direction Y, so that the smoothness of the sliding roll of the flexible display module can be improved.

In some embodiments, the support sub-portion 31 includes a straight line segment, which may extend in the first direction X, for example. The support sub-portion 31 may have a completely linear structure or a partially linear structure, which is not limited in the embodiment of the present utility model.

In the embodiment of the present utility model, by providing the straight line segment in the support sub-portion 31, the ductility of the flexible display module in the sliding and curling direction thereof can be further improved, and the support reliability of the first support 30 for the first portion 21 in the unfolded state can be advantageously improved.

In some embodiments, referring to fig. 5, the support sub-portion 31 includes a curved segment. The support sub-portion 31 may be completely or partially curved, which is not limited in the embodiment of the present utility model.

In the embodiment of the utility model, by arranging the curve section in the supporting sub-portion 31, the smooth rolling of the flexible display module can be further improved, and the risk of blocking the flexible display module in the rolling process is reduced.

In some embodiments, the support sub-portion 31 extends along the first direction X, which can further improve the ductility of the flexible display module in the sliding curl direction thereof and can improve the stability of the flexible display module in the first direction X.

In some embodiments, referring to fig. 6, in the unfolded state, the plurality of support sub-portions 31 extend along the second direction Y and are spaced apart in the first direction X.

The support sub-portion 31 may have a linear bar-like structure, or may have a curved or other structure. It should be noted that, when the supporting sub-portion 31 is curved or has other structures, the extending direction of the supporting sub-portion 31 is the connecting line direction of the opposite ends of the supporting sub-portion 31. The support sub-portion 31 extends in the second direction Y, and the supporting effect thereof on the first portion 21 in the second direction Y can be ensured, and alternatively, the size of the support sub-portion 31 in the second direction Y is not smaller than the size of the first portion 21 in the second direction Y.

Further, the plurality of support sub-portions 31 are arranged at intervals in the first direction X, and the pitches at different positions in the extending direction may be the same or different for the adjacent two support sub-portions 31. And the average spacing between any adjacent support sub-portions 31 may be the same or different for different support sub-portions 31.

In some embodiments, referring to fig. 6, the first portion 21 includes a first region 211 and second regions 212 located at both sides of the first region 211 in the second direction Y, and the weight of the first support 30 corresponding to the first region 211 is smaller than the weight of the first support 30 corresponding to the second region 212. Wherein in fig. 6 the position of the flexible screen 20 with respect to the first support 30 and the second support 40 is schematically indicated by means of a peripheral maximum dashed frame.

The first direction X is a length direction of the flexible display module, the second direction Y is a width direction of the flexible display module, the first area 211 is located at a center position of the first portion 21, the second area 212 is provided with two areas, and the two areas are located at two sides of the first area 211 in the second direction Y, respectively, and the second area 212 is located at an edge position of the first portion 21.

Reference to "the first support 30 corresponds to the weight at the first region 211" in the embodiment of the present utility model means: orthographic projection of first support 30 onto flexible screen 20 is within the total weight of the portion of structure of first region 211 orthographic projection onto flexible screen 20; similarly, "the first support 30 corresponds to the weight at the second region 212" means: the orthographic projection of the first support 30 onto the flexible screen 20 is within the total weight of the portion of the structure of the second region 212 that is orthographic projected onto the flexible screen 20.

There are generally a number of ways how the weight of the first support 30 at the different regions can be adjusted, and embodiments of the present utility model are not limited in this regard. Illustratively, the number of support sub-portions 31 at different regions may be adjusted such that the weight of the first support 30 is different for the different regions; or the material of the first supporting piece 30 can be adjusted, so that different materials are adopted for the first supporting piece 30 corresponding to different areas, and the weight of the first supporting piece 30 corresponding to different areas is different; or the dimensions of the different support sub-portions 31 may be adjusted so that the weight of the first support 30 is different for different areas.

In the related art, the flexible display module is easy to bulge due to different stress conditions of the flexible screen 20 in the process of rolling, that is, the central position of the flexible screen 20 is easy to bulge. In the embodiment of the utility model, the weight of the first supporting member 30 at different positions is controlled to be greater at the position corresponding to the second area 212 than at the position corresponding to the first area 211, so that the first supporting member 30 can pull the flexible screen 20 from the edge position during the sliding and rolling process of the flexible display module, thereby reducing the risk of swelling of the flexible screen 20 and ensuring the flatness of the flexible display module in the unfolded state.

In some embodiments, at least a portion of the support sub-portion 31 includes a plurality of support segments 311 spaced apart in the second direction Y, with an orthographic projection of the support segments 311 onto the flexible screen 20 being within an orthographic projection of the second region 212 onto the flexible screen 20, i.e., the support segments 311 being within the second region 212.

The number of the support sub-portions 31 is plural, and the plural support sub-portions 31 are arranged at intervals in the first direction X, and the embodiment of the present utility model is not limited to the number of the support sub-portions 31. At least part of the sub-support portions 31 includes support segments 311 arranged at intervals in the second direction Y, wherein the number of support segments 311 located in a single support sub-portion 31 may be two or more, which is not limited in the embodiment of the present utility model, as long as the orthographic projection of each support segment 311 on the flexible screen 20 is located in the orthographic projection of the second region 212 on the flexible screen 20.

It should be noted that, for different support sub-portions 31, each support sub-portion 31 may include a plurality of support segments 311, or a portion of the support sub-portions 31 may include a plurality of support segments 311, and a portion of the support sub-portions 31 may be a complete continuous structure.

In an embodiment of the utility model, at least the sub-portion 31 is provided to comprise a plurality of support segments 311 and the orthographic projection of the support segments 311 onto the flexible screen 20 is provided within the orthographic projection of the second region 212 onto the flexible screen 20. Thereby increasing the weight of the first support 30 at a location corresponding to the second region 212 such that the weight of the first support 30 at the location corresponding to the second region 212 is greater than the weight of the first support 30 at the location corresponding to the first region 211. The risk of bulging of the flexible screen 20 is reduced, and flatness of the flexible display module in the unfolded state is ensured.

In some embodiments, the flexible screen 20 has a virtual straight line L parallel to the first direction X and passing through the center of the flexible screen 20, and the orthographic projections of the plurality of support segments 311 on the flexible screen 20 are axisymmetrically distributed with respect to the virtual straight line L.

In the embodiment of the present utility model, the plurality of support sections 311 are axisymmetrically distributed with respect to the virtual straight line L, in other words, the plurality of support sections 311 are uniformly distributed corresponding to the two second areas 212. The design ensures that the stress on two sides of the flexible screen 20 is relatively uniform, reduces the probability of uneven tilting of one side of the flexible screen 20 in the use process of the flexible display module, and improves the use reliability.

In some embodiments, the average thickness of the first support 30 at the corresponding first region 211 is less than the average thickness of the first support 30 at the corresponding second region 212.

Reference to "the first support 30 corresponds to the average thickness at the first region 211" in the embodiment of the present utility model means that: the average thickness of the portion of the structure of the first support 30 that is located within the orthographic projection of the first region 211 on the flexible screen 20 is orthographically projected on the flexible screen 20. Wherein the thickness of the first support 30 corresponding to the structures in the first region 211 may be the same or different. Similarly, "the first support 30 corresponds to the average thickness at the second region 212" refers to: the average thickness of the portion of the structure of first support 30 that is located within the orthographic projection of second region 212 onto flexible screen 20 is orthographically projected onto flexible screen 20. Wherein the thickness of the first support 30 corresponding to the structures in the second region 212 may be the same or different.

Typically, the weight of a material is positively correlated to its thickness. In the embodiment of the utility model, since the average thickness of the first supporting member 30 corresponding to the first area 211 is smaller than the average thickness of the first supporting member 30 corresponding to the second area 212, the weight of the first supporting member 30 corresponding to the first area 211 is smaller than the weight of the first supporting member 30 corresponding to the second area 212, so that the risk of swelling of the flexible screen 20 can be reduced, and the flatness of the flexible display module in the unfolded state can be ensured.

In some embodiments, the thickness of the first support 30 tends to increase gradually in a direction from the first region 211 toward the second region 212. The thickness of the first support 30 may be increased in a gradient manner, or may be increased in a linear or exponential manner.

According to the embodiment of the utility model, the thickness of the first supporting piece 30 is set to be gradually increased, so that the average thickness of the first supporting piece 30 corresponding to the first area 211 is smaller than the average thickness of the first supporting piece 30 corresponding to the second area 212, the effect that the weight of the first supporting piece 30 corresponding to the first area 211 is smaller than the weight of the first supporting piece 30 corresponding to the second area 212 is achieved, and the flatness of the flexible display module in the unfolded state is improved.

In some embodiments, the material density at the first support 30 corresponding to the first region 211 is less than the material density at the first support 30 corresponding to the second region 212.

The portion of the first support 30 corresponding to the first region 211 and the portion of the first support 30 corresponding to the second region 212 are made of different materials, and the material density of the first support 30 corresponding to the first region 211 is smaller than the material density of the first support 30 corresponding to the second region 212. This design is advantageous in achieving an effect that the weight of the first support 30 corresponding to the first region 211 is smaller than the weight of the first support 30 corresponding to the second region 212, thereby improving the flatness of the flexible display module in the unfolded state.

In some alternative embodiments, the portion of first support 30 corresponding to first region 211 comprises at least one of titanium and steel.

In some embodiments, referring to fig. 7, the number of support sub-portions 31 of the first support 30 corresponding to the first region 211 is smaller than the number of support sub-portions 31 of the first support 30 corresponding to the second region 212. In other words, in the front projection of the first support 30 on the flexible screen 20, the number of support sub-portions 31 located in the first region 211 is smaller than the number of support sub-portions 31 located in the second region 212.

The weight of the first supporting piece 30 corresponding to the first area 211 is smaller than that of the first supporting piece 30 corresponding to the second area 212, so that the risk of swelling of the flexible screen 20 can be reduced, and the flatness of the flexible display module in the unfolded state is ensured.

In some embodiments, in the deployed state, the plurality of support sub-portions 31 are disposed at intervals in the second direction Y, and the pitch of adjacent support sub-portions 31 in the second direction Y tends to gradually decrease in the direction from the first region 211 toward the second region 212.

According to the embodiment of the utility model, the space between the different support sub-parts 31 is adjusted, so that the plurality of support sub-parts 31 of the first support piece 30 corresponding to the second area 212 are distributed more densely, the number of support sub-parts 31 corresponding to the second area 212 is increased, the weight of the first support piece 30 corresponding to the second area 212 is increased, and the flatness of the flexible display module in the unfolded state is ensured.

In some embodiments, referring to fig. 8, the flexible display module further includes an adhesive portion 50 disposed between adjacent support sub-portions 31, and the adhesive portion 50 connects adjacent support sub-portions 31.

The supporting sub-portions 31 are of independent structures and are arranged at intervals, so that in order to improve the reliability of the relative positions of the different supporting sub-portions 31, the bonding portions 50 are arranged between the adjacent supporting sub-portions 31, and the bonding portions 50 can achieve bonding fixation between the adjacent supporting sub-portions 31, so that the probability of relative displacement between the different supporting sub-portions 31 in the use process of the flexible display module is reduced, and the reliability and the service life of the flexible display module are improved.

The embodiment of the present utility model is not limited with respect to the material structure of the bonding portion 50. Illustratively, the bonding portion 50 may employ an optical cement structure. In addition, in the embodiment of the present utility model, the plurality of support sub-portions 31 may be connected to the second support member 40 or may not be connected to the second support member 40, which is not limited in the embodiment of the present utility model.

In some embodiments, the adhesive 50 is attached to the flexible screen 20.

The adhesive portion 50 is connected to the flexible screen 20 in addition to the adjacent support sub-portions 31. In this way, the reliability of the relative position between the support sub-part 31 and the flexible screen 20 can be improved, the probability of relative sliding between the flexible screen 20 and the support sub-part 31 is reduced, and the use reliability of the flexible display module is improved. Meanwhile, the bonding part 50 generally has certain bending deformation capability, so that the existence of the bonding part 50 does not adversely affect the rolling process of the flexible display module, and the rolling requirement of the flexible display module can be met.

In a second aspect, referring to fig. 9, an embodiment of the present utility model provides a flexible display device, including a flexible display module in any of the foregoing embodiments.

It should be noted that, the flexible display device provided by the embodiment of the present utility model has the beneficial effects of the flexible display module in any of the foregoing embodiments, and the specific content is detailed in the foregoing description of the beneficial effects of the flexible display module, which is not repeated in the embodiment of the present utility model.

Although the embodiments of the present utility model are disclosed above, the embodiments are only used for the convenience of understanding the present utility model, and are not intended to limit the present utility model. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the present disclosure as defined by the appended claims.

In the foregoing, only the specific embodiments of the present utility model are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, substitution of other connection modes described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present utility model is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present utility model, and they should be included in the scope of the present utility model.

Claims (18)

1. A flexible display module, characterized by having an expanded state and a stored state, the flexible display module comprising:

a reel rotatable about an axis thereof;

the flexible display module is in a state of being unfolded and is in a state of being stored, and comprises a first part which is wound and moved relative to the scroll in the process of being converted into the state of being stored;

a first support disposed between the first portion and the spool, the first support including a plurality of support sub-portions disposed at intervals;

the first part comprises a first area and second areas which are positioned at two sides of the first area in a second direction;

the weight of the first support at the first region is less than the weight of the first support at the second region.

2. The flexible display module of claim 1, wherein the flexible screen further comprises a second portion connected side-by-side with the first portion, the flexible display module further comprising a second support disposed between the second portion and the spool.

3. A flexible display module according to claim 2, wherein the second support is a planar structure and the second support covers the second portion in an orthographic projection of the flexible screen.

4. A flexible display module according to claim 2, wherein at least part of the support sub-portion is connected to the second support member.

5. A flexible display module according to claim 2, wherein the first support and the second support are of an integrally formed structure.

6. A flexible display module according to claim 2, wherein in the deployed state, a plurality of the support sub-portions extend in a first direction and are spaced apart in the second direction, the first and second portions being disposed side by side in the first direction, the first direction intersecting the second direction.

7. A flexible display module according to claim 6, wherein the support sub-portion comprises a straight line segment and/or the support sub-portion comprises a curved line segment.

8. A flexible display module according to claim 6, wherein the support sub-portion extends in the first direction.

9. A flexible display module according to claim 2, wherein in the deployed state, a plurality of the support sub-portions extend in the second direction and are spaced apart in a first direction, the first and second portions being disposed side-by-side in the first direction, the first direction intersecting the second direction.

10. A flexible display module according to claim 6 or 9, wherein at least part of the support sub-portion comprises a plurality of support segments spaced apart in the second direction, the support segments being located within the second region.

11. A flexible display module according to claim 10, wherein the flexible screen has a virtual straight line parallel to the first direction and passing through the centre of the flexible screen, the orthographic projections of the plurality of support segments on the flexible screen being axisymmetrically distributed with respect to the virtual straight line.

12. The flexible display module of claim 1, wherein an average thickness of the first support corresponding to the first region is less than an average thickness of the first support corresponding to the second region.

13. The flexible display module of claim 12, wherein the thickness of the first support member has a tendency to increase gradually in a direction from the first region toward the second region.

14. The flexible display module of claim 1, wherein a material density of the first support corresponding to the first region is less than a material density of the first support corresponding to the second region.

15. The flexible display module of claim 1, wherein a number of support sub-portions of the first support corresponding to the first region is less than a number of support sub-portions of the first support corresponding to the second region.

16. The flexible display module according to claim 15, wherein in the unfolded state, a plurality of the support sub-portions are disposed at intervals in the axis direction;

the distance between adjacent support sub-portions in the axial direction tends to gradually decrease in the direction from the first region toward the second region.

17. The flexible display module according to claim 1, further comprising an adhesive portion disposed between adjacent ones of the support sub-portions, the adhesive portion connecting adjacent ones of the support sub-portions; the adhesive portion is connected to the flexible screen.

18. A flexible display device comprising the flexible display module of any one of claims 1 to 17.