A display device

Abstract

The present application discloses a display device, comprising: a flexible display module, the flexible display module comprising a fixed area and a sliding area connected to the fixed area, wherein at least one side of the sliding area facing away from the display surface is provided with a magnetic material layer; a fixed housing for supporting the fixed area; a sliding housing slidably connected to the fixed housing so that the sliding housing overlaps and unfolds relative to the fixed housing, and for supporting the sliding area; and a rotating shaft disposed at one end of the sliding housing facing away from the fixed housing, the sliding area being slidably mounted around the rotating shaft; wherein the sliding housing comprises a support portion and a magnet assembly, wherein the magnet assembly comprises a plurality of linear Halbach magnet arrays staggered on the support portion. This allows the sliding area to receive a greater force from the support portion, thereby conforming more closely to the support portion; and also allows the sliding area to receive a more uniform force from the support portion, thereby preventing the sliding area from being subjected to a smaller force locally and being unable to lower and conform to the support portion.

Description

Technical Field

[0001] The present application belongs to the field of flexible display technology, and in particular relates to a display device. Background Art

[0002] For display devices such as mobile phones, people have high expectations for the size of display modules. However, larger display devices are inconvenient to store. By placing a flexible organic light-emitting diode (OLED) display module in a display device using a sliding method, the advantages of large display size and compact storage can be achieved. The sliding area of ​​the flexible display module can be rolled up and stored on a hinge. However, due to long-term rolling and sliding movements, the sliding area is prone to creep. After the sliding display device is unfolded, the creep cannot return to its original state, forming creep creases in the sliding area. This also causes rebound arching due to rebound force, which has a significant negative impact on the appearance and tactile feel of the flexible display module.

[0003] In related technologies, the sliding area of ​​the flexible display module is adsorbed on the support of the sliding area by magnetic attraction. However, the traditional magnet setting method has a small or uneven magnetic induction intensity, resulting in a small or uneven force on the sliding area, and the arched part cannot be completely lowered.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the Invention

[0005] The present application aims to at least partially resolve the technical problem that due to the limited arrangement of the magnets, the magnetic induction intensity is small or uneven, resulting in small or uneven force on the sliding area and the arched part cannot be completely lowered. To this end, the present application provides a display device.

[0006] An embodiment of the present application provides a display device, comprising:

[0007] A flexible display module, comprising a fixed area and a sliding area connected to the fixed area, wherein at least a side of the sliding area facing away from the display surface is provided with a magnetic material layer;

[0008] a fixed housing, used to support the fixed area;

[0009] a sliding housing, slidably connected to the fixed housing so that the sliding housing overlaps and unfolds relative to the fixed housing, and is used to support the sliding area; and

[0010] A rotating shaft is provided at one end of the sliding housing away from the fixed housing, and the sliding roll area is slidably arranged around the rotating shaft;

[0011] The sliding housing includes a support portion and a magnet assembly, and the magnet assembly includes a plurality of Halbach magnet arrays staggered on the support portion.

[0012] In some embodiments, the support portion includes sliding support bars arranged at intervals, each of the sliding support bars is provided with at least one group of the Halbach magnet arrays, the array arrangement direction of the Halbach magnet arrays is the same as the length direction of the sliding support bar, and the Halbach magnet arrays on two adjacent sliding support bars are staggered.

[0013] In some embodiments, each of the sliding support bars is provided with two or more groups of the Halbach magnet arrays.

[0014] In some embodiments, the Halbach magnet arrays on the same sliding support bar are arranged in parallel or staggered.

[0015] In some embodiments, a first spacing between the Halbach magnet arrays on two adjacent sliding support bars is greater than a second spacing between two adjacent groups of Halbach magnet arrays on the same sliding support bar.

[0016] In some embodiments, the second spacing is greater than a width of the Halbach magnet array.

[0017] In some embodiments, all of the second intervals are the same or different in size.

[0018] In some embodiments, a total length of the Halbach magnet array is greater than a sliding distance of the sliding housing relative to the fixed housing.

[0019] In some embodiments, the number of magnets in the Halbach magnet array is 2n+1, where n is an integer greater than 1.

[0020] In some embodiments, the fixed housing includes fixed support bars arranged at intervals, a slideway is formed between two adjacent fixed support bars, and the sliding support bar is slidably arranged in the slideway.

[0021] The embodiments of the present application have at least the following beneficial effects:

[0022] In the above-mentioned display device, a Halbach magnet array is arranged on the support portion of the sliding housing. The characteristic of the Halbach magnet array with high magnetic induction intensity is utilized to improve the magnetic induction intensity of the magnet assembly, thereby improving the magnetic force between the magnet assembly and the magnetic material layer on the sliding area, so that the sliding area can be subjected to a greater force from the support portion, thereby flattening the sliding area and fitting it more closely with the support portion; at the same time, since the magnetic induction intensity of different areas of each group of Halbach magnet arrays is different, the magnetic induction intensity of each group of Halbach magnet arrays varies in peaks and valleys. By adjusting the arrangement of the linear Halbach magnet arrays on the support portion, the Halbach magnet arrays are arranged on the support portion in a staggered manner, so that the Halbach magnets The peak areas of the magnetic induction intensity of the body array are staggered so that the peak areas of the magnetic induction intensity of the Halbach magnet array correspond to the valley areas, thereby adjusting the magnetic induction intensity of different areas on the support portion. This can not only make the magnetic induction intensity of different areas on the support portion more uniform, but also correspond to the magnetic induction intensity at different arch heights in the winding area, so that the magnitude of the magnetic induction intensity corresponds to the arch height and deformation height of the curling area, and the magnitude of the magnetic suction force at different arch heights in the curling area is different, thereby ensuring that the curling area is flattened, and effectively avoiding the situation where the sliding area is locally subjected to less force and cannot be lowered to fit the support portion, thereby improving the flatness of the sliding area and improving the appearance and touch function of the sliding area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 A schematic diagram of the longitudinal cross-section structure of a display device in an embodiment of the present application is shown.

[0025] Figure 2 A schematic structural diagram of the sliding housing in Comparative Example 1 of the present application is shown;

[0026] Figure 3 Shown Figure 2 The magnet assembly structure in the sliding housing and the corresponding magnetic induction intensity distribution diagram;

[0027] Figure 4 A schematic structural diagram of the sliding housing in Comparative Example 2 of the present application is shown;

[0028] Figure 5 Shown Figure 4 The magnet assembly structure in the sliding housing and the corresponding magnetic induction intensity distribution diagram;

[0029] Figure 6A schematic structural diagram of a sliding housing in the first embodiment of the present application is shown;

[0030] Figure 7 Shown Figure 6 The magnet assembly structure in the sliding housing and the corresponding magnetic induction intensity distribution diagram;

[0031] Figure 8 A schematic structural diagram of a sliding housing in a second embodiment of the present application is shown;

[0032] Figure 9 Shown Figure 8 Structural diagram of the magnet assembly in the sliding housing;

[0033] Figure 10 A schematic structural diagram of a sliding housing in a third embodiment of the present application is shown;

[0034] Figure 11 Shown Figure 10 Structural diagram of the magnet assembly in the sliding housing;

[0035] Figure 12 A schematic structural diagram of a sliding housing in a fourth embodiment of the present application is shown;

[0036] Figure 13 Shown Figure 12 Diagram of the magnet assembly structure in the sliding housing.

[0037] Reference numerals:

[0038] 100, flexible display module; 200, fixed housing; 300, sliding housing; 310, support portion; 311, first sliding support bar; 312, second sliding support bar; 313, third sliding support bar; 314, fourth sliding support bar; 315, fifth sliding support bar; 320, magnet assembly; 321, first linear Halbach magnet array; 322, second linear Halbach magnet array; 323, third linear Type Halbach magnet array; 324, fourth linear Halbach magnet array; 325, fifth linear Halbach magnet array; 331, first elongated magnet; 332, second elongated magnet; 333, third elongated magnet; 334, fourth elongated magnet; 335, fifth elongated magnet; 400, rotating shaft; F, traction force; H1, deformation height; H2, arch height; L1, first spacing; L2, second spacing. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] In addition, this application may repeat reference numbers and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0041] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0042] A display device proposed in this application, such as Figure 1 、 Figures 6 to 13 As shown, the display device includes:

[0043] The flexible display module 100 includes a fixed area and a sliding area connected to the fixed area, and at least a magnetic material layer is provided on a side of the sliding area facing away from the display surface;

[0044] A fixed housing 200 for supporting the fixed area;

[0045] The sliding housing 300 is slidably connected to the fixed housing 200 so that the sliding housing 300 overlaps and unfolds relative to the fixed housing 200, and is used to support the sliding area; and

[0046] A rotating shaft 400 is provided at one end of the sliding housing 300 away from the fixed housing 200, and the sliding roll area is slidably wound around the rotating shaft 400;

[0047] The sliding housing 300 includes a support portion 310 and a magnet assembly 320 . The magnet assembly 320 includes a plurality of Halbach magnet arrays arranged in a staggered manner on the support portion 310 .

[0048] Optionally, the Halbach magnet array can be linear, curved, triangular, etc.

[0049] In the display device of the present application, a Halbach magnet array is provided on the support portion 310 of the sliding housing 300. The high magnetic induction intensity of the Halbach magnet array is utilized to improve the magnetic induction intensity of the magnet assembly 320, thereby improving the magnetic force between the magnet assembly 320 and the magnetic material layer on the sliding area, so that the sliding area can be subjected to a greater force from the support portion 310, thereby flattening the sliding area and making it fit more closely with the support portion 310. At the same time, since the magnetic induction intensity of different areas of each group of Halbach magnet arrays is different, the magnetic induction intensity of each group of Halbach magnet arrays varies in peaks and valleys. By adjusting the arrangement of the Halbach magnet arrays on the support portion 310, the Halbach magnet arrays are staggered on the support portion 310, so that the Halbach magnet arrays are staggered. The peak areas of the magnetic induction intensity of the Baker magnet array are staggered so that the peak areas of the magnetic induction intensity of the Halbach magnet array correspond to the valley areas, thereby adjusting the magnetic induction intensity of different areas on the support portion 310. This can not only make the magnetic induction intensity of different areas on the support portion 310 more uniform, but also correspond to the magnetic induction intensity at different arch heights H2 in the winding area, so that the magnitude of the magnetic induction intensity corresponds to the arch height H2 and the deformation height H1 of the curling area, so that the magnetic suction force at different arch heights H2 in the curling area is different, thereby ensuring that the curling area is flattened, and effectively avoiding the situation where the sliding area is locally subjected to less force and cannot be lowered to fit the support portion 310, thereby improving the flatness of the sliding area and improving the appearance and touch function of the sliding area.

[0050] like Figure 1As shown, the flexible display module 100 is supported by a fixed housing 200 and a sliding housing 300, and is rolled up and stored by a rotating shaft 400. The fixed area of ​​the flexible display module 100 can be fixed to the fixed housing 200 by an adhesive layer, and the sliding area of ​​the flexible display module 100 can be wound around the rotating shaft 400 under the traction of the traction force F generated by the tensioning system and can slide relative to the rotating shaft 400. When the sliding housing 300 slides relative to the fixed housing 200 so that the sliding housing 300 overlaps with the fixed housing 200, the sliding area of ​​the flexible display module 100 slides around the rotating shaft 400 under the traction force F and rolls up on the rotating shaft 400; when the sliding housing 300 slides and unfolds relative to the fixed housing 200, the sliding area of ​​the flexible display module 100 slides around the rotating shaft 400 and unfolds on the supporting portion 310 of the sliding housing 300. Since the sliding area curls on the rotating shaft 400, it is easy to creep, resulting in folding of the curling area. The folded area of ​​the sliding scroll area is deformed. After being unfolded, the sliding scroll area cannot fit with the support portion 310 of the sliding housing 300. There is a certain deformation height H1 between the folded deformation part of the sliding scroll area and the support portion 310 of the sliding housing 300. At the same time, the sliding scroll area is also arched due to deformation rebound. There is a certain arch height H2 between the arched part of the sliding scroll area and the support portion 310 of the sliding housing 300. The deformation and arching of the sliding scroll area have a significant adverse effect on the appearance and touch of the display device, and the device cannot pass the reliability test.

[0051] For example, in embodiment 1, Figure 6 and Figure 7As shown, in the display device of the first embodiment, the magnet assembly 320 includes a plurality of linear Halbach magnet arrays staggered on the support portion 310. In this embodiment, the structure and arrangement of the magnet assembly 320 in the display device of the present application are exemplified by taking the example that the magnet assembly 320 includes five groups of linear Halbach magnet arrays staggered on the support portion 310. In the first embodiment, the five groups of linear Halbach magnet arrays of the magnet assembly 320 are distributed on the support portion 310 in parallel and staggered with each other, so that the peaks of the magnetic induction intensity generated by the first linear Halbach magnet array 321, the third linear Halbach magnet array 323 and the fifth linear Halbach magnet array 325 are staggered with the peaks of the magnetic induction intensity of the second linear Halbach magnet array 322 and the fourth linear Halbach magnet array 324, so that the first linear Halbach magnet array 321 and the third linear Halbach magnet array The peaks of the magnetic induction intensity generated by the first linear Halbach magnet array 321, the third linear Halbach magnet array 323 and the fifth linear Halbach magnet array 325 overlap with the troughs of the magnetic induction intensity of the second linear Halbach magnet array 322 and the fourth linear Halbach magnet array 324, so that the troughs of the magnetic induction intensity generated by the first linear Halbach magnet array 321, the third linear Halbach magnet array 323 and the fifth linear Halbach magnet array 325 overlap with the peaks of the magnetic induction intensity of the second linear Halbach magnet array 322 and the fourth linear Halbach magnet array 324. Figure 7 As shown, the magnet assembly 320 of this structure and arrangement can not only significantly increase the magnetic induction intensity of each area of ​​the support part 310, but also the magnetic induction intensity of each area of ​​the support part 310 is uniform, and there is no area with too small magnetic induction intensity, which avoids the support part 310 from exerting too small a force on the winding area and failing to magnetically attract the deformed or arched part of the winding area to the support part 310; at the same time, there is no area with too large magnetic induction intensity, which avoids the force between the support part 310 and the curling area being too large, increasing the resistance of the sliding housing 300 to sliding relative to the fixed housing 200, affecting the sliding of the sliding housing 300 relative to the fixed housing 200, and increasing the push-pull force of expanding and retracting the sliding housing 300.

[0052] In one possible embodiment, the linear Halbach magnet array includes a plurality of Halbach magnets, such as Figure 6 The first linear Halbach magnet array 321 includes 7 Halbach magnets.

[0053] In a possible implementation, the staggered distance between two adjacent groups of linear Halbach magnet arrays is 0.3S to 1.5S, where S is the length of a single Halbach magnet.

[0054] In a possible embodiment, the distance between two adjacent groups of linear Halbach magnet arrays is smaller than the distance between two adjacent sliding support bars, which is beneficial for protecting the linear Halbach magnet arrays from damage.

[0055] In comparative example 1, Figure 2 and Figure 3 As shown, the difference between the display device of comparative example 1 and the display device of the present application is that the magnetic attraction is provided by five parallel long strip magnets, the first long strip magnet 331, the second long strip magnet 332, the third long strip magnet 333, the fourth long strip magnet 334 and the fifth long strip magnet 335 are arranged parallel to each other on the support portion 310 of the sliding housing 300. Figure 3 As shown, although the magnetic induction intensity distribution generated by the magnet assembly 320 of this structure and arrangement on the support portion 310 is relatively uniform, the magnetic induction intensity is relatively large in the area adjacent to the fixed portion and the area adjacent to the rotating shaft 400, but the maximum magnetic induction intensity is still less than 100mT, and the magnetic induction intensity is relatively small in the sliding area, both less than 80mT. The force generated on the sliding area of ​​the flexible display module 100 is limited, and it cannot ensure that the deformed and arched part is magnetically attracted to the support portion 310.

[0056] In comparative example 2, Figure 4 and Figure 5 As shown, the difference between the display device of comparative example 2 and the display device of the present application is that the magnet assembly 320 includes several linear Halbach magnet arrays arranged in parallel on the support portion 310, that is, the five groups of linear Halbach magnet arrays of the magnet assembly 320 are distributed in parallel and parallel to each other on the support portion 310, and the first linear Halbach magnet array 321, the second linear Halbach magnet array 322, the third linear Halbach magnet array 323, the fourth linear Halbach magnet array 324 and the fifth linear Halbach magnet array 325 are parallel and aligned with each other. Figure 3As shown, the magnetic assembly 320 with this structure and arrangement can significantly increase the magnetic induction intensity, and the maximum magnetic induction intensity can reach more than 150mT, so that the force generated by the magnetic assembly 320 on the sliding area of ​​the flexible display module 100 is greatly improved, especially in the areas corresponding to the second magnet, the fourth magnet and the sixth magnet of each group of linear Halbach magnet arrays. The magnetic induction intensity is increased to twice the magnetic induction intensity generated by the long strip magnets in the comparative example 1. However, in some areas, such as the areas corresponding to the first magnet, the third magnet, the fifth magnet and the seventh magnet, the magnetic induction intensity generated is even less than 10mT, resulting in uneven force in the curling area of ​​the flexible display module 100, which causes some deformed parts and arched parts of the curling area of ​​the flexible display module 100 to be unable to be magnetically attracted and completely dropped onto the support part 310, which has a significant adverse effect on the appearance and touch of the display device and cannot pass the reliability test. At the same time, since the magnetic induction intensity in some areas is too high, the resistance to sliding of the sliding housing 300 relative to the fixed housing 200 will undoubtedly increase, and the push-pull force for expanding and retracting the sliding housing 300 will increase.

[0057] As an optional embodiment, the support portion 310 includes spaced sliding support bars, each of which is provided with at least one linear Halbach magnet array. The linear Halbach magnet arrays are arranged in the same direction as the length of the sliding support bar, and the linear Halbach magnet arrays on two adjacent sliding support bars are staggered. Furthermore, optionally, the fixed housing 200 includes spaced fixed support bars, with slideways formed between adjacent fixed support bars, and the sliding support bars are slidably disposed within the slideways.

[0058] In the display device of the present application, the sliding housing 300 forms a comb-tooth-shaped support portion 310 on the support portion 310 through sliding support bars arranged at intervals. Correspondingly, the fixed housing 200 forms a comb-tooth-shaped slideway through fixed support bars arranged at intervals. The sliding support bars slide in the sliding formed by the fixed support bars to achieve a sliding connection between the sliding housing 300 and the fixed housing 200, so that the sliding housing 300 can slide relative to the fixed housing 200, and the sliding housing 300 can overlap and unfold relative to the fixed housing 200. Based on the comb-tooth structure of the support portion of the sliding housing 300, the linear Halbach magnet array of the magnet assembly 320 is distributed on each sliding support bar of the support portion 310, so that the sliding area of ​​the flexible display module 100 can be subjected to magnetic attraction on each sliding support bar. At the same time, in order to avoid the overlapping of peaks and troughs of adjacent linear Halbach magnet arrays, which leads to excessive magnetic induction intensity in certain areas of the sliding support bar, the linear Halbach magnet arrays on adjacent sliding support bars are staggered. Even if the peaks and troughs of the linear Halbach magnet arrays on adjacent sliding support bars overlap, the magnetic forces on the adjacent sliding support bars are complementary, compensating for the situation that the magnetic induction intensity of some sliding support bar positions is small or zero due to the existence of magnetic induction intensity troughs of the linear Halbach magnet array. While improving the magnetic induction intensity of each area of ​​the sliding support bar, the magnetic induction intensity of each area of ​​the sliding support bar can also be made uniform, avoiding the situation where the local magnetic induction intensity is too large or too small.

[0059] For example, in embodiment 1, Figure 6 and Figure 7As shown, the support portion 310 of the sliding housing 300 is provided with five spaced sliding support bars, and each sliding support bar is provided with a group of linear Halbach magnet arrays. That is, on the support portion 310 of the sliding housing 300, a group of first linear Halbach magnet arrays 321 is provided on the first sliding support bar 311, a group of second linear Halbach magnet arrays 322 is provided on the second sliding support bar 312, a group of third linear Halbach magnet arrays 323 is provided on the third sliding support bar 313, a group of fourth linear Halbach magnet arrays 324 is provided on the fourth sliding support bar 314, a group of fifth linear Halbach magnet arrays 325 is provided on the fifth sliding support bar 315, and a group of first linear Halbach magnet arrays 326 is provided on the fifth sliding support bar 316. The Halbach magnet array 321 is staggered with the first linear Halbach magnet array 321, the second linear Halbach magnet array 322 is staggered with the third linear Halbach magnet array 323, the third linear Halbach magnet array 323 is staggered with the fourth linear Halbach magnet array 324, and the fourth linear Halbach magnet array 324 is staggered with the fifth linear Halbach magnet array 325, thereby forming a staggered arrangement of the linear Halbach magnet arrays on two adjacent sliding support bars.

[0060] As an optional embodiment, each sliding support bar is provided with two or more groups of linear Halbach magnet arrays.

[0061] In the display device of the present application, by providing two or more groups of linear Halbach magnet arrays on each sliding support bar, the magnetic induction intensity on a single sliding support bar can be enhanced, that is, the magnetic force of a single sliding support bar can be increased. This embodiment is preferably suitable for situations where the width of the sliding support bar is large, or the width of the flexible display module 100 is large in a direction perpendicular to the sliding support bar.

[0062] As an optional embodiment, the linear Halbach magnet arrays on the same sliding support bar are arranged in parallel or staggered.

[0063] In the display device of the present application, two or more linear Halbach magnet arrays are provided on the same sliding support bar, and the linear Halbach magnet arrays on the same sliding support bar are arranged side by side. This arrangement of linear Halbach magnet arrays is preferably suitable for situations where the spacing between two adjacent sliding support bars is large. It not only increases the magnetic induction intensity on a single sliding support bar, but also avoids interference between the two or more linear Halbach magnet arrays on the same sliding support bar, thereby preventing the reduction of the magnet's attractive force due to interference. At the same time, the linear Halbach magnet arrays of adjacent sliding support bars are arranged in staggered positions to ensure that the magnetic induction intensity on adjacent sliding support bars is uniform, avoiding the occurrence of excessive or insufficient local magnetic induction intensity.

[0064] In addition, in the display device of the present application, more than two groups of linear Halbach magnet arrays are provided on the same sliding support bar, and the linear Halbach magnet arrays on the same sliding support bar are staggered. This arrangement of the linear Halbach magnet arrays is preferably suitable for situations where the width of adjacent sliding support bars is larger. It can not only increase the magnetic induction intensity on a single sliding support bar, but also make the magnetic induction intensity on a single sliding support bar uniform.

[0065] For example, in Example 2, Figure 8 and Figure 9 As shown, the support portion 310 on the sliding housing 300 includes five sliding support bars. Two groups of first linear Halbach magnet arrays 321 are provided on the first sliding support bar 311, and the two groups of first linear Halbach magnet arrays 321 are arranged in parallel; two groups of second linear Halbach magnet arrays 322 are provided on the second sliding support bar 312, and the two groups of second linear Halbach magnet arrays 322 are arranged in parallel; two groups of third linear Halbach magnet arrays 323 are provided on the third sliding support bar 313, and the two groups of third linear Halbach magnet arrays 323 are arranged in parallel; two groups of fourth linear Halbach magnet arrays 324 are provided on the fourth sliding support bar 314, and the two groups of fourth linear Halbach magnet arrays 324 are arranged in parallel; two groups of fifth linear Halbach magnet arrays 325 are provided on the fifth sliding support bar 315, and the two groups of fifth linear Halbach magnet arrays 325 are arranged in parallel. At the same time, the first linear Halbach magnet array 321 and the second linear Halbach magnet array 322 are staggered. Correspondingly, the second linear Halbach magnet array 322, the third linear Halbach magnet array 323, the fourth linear Halbach magnet array 324, and the fifth linear Halbach magnet array 325 are staggered, respectively. Details thereof will not be repeated here. In Example 2, two sets of non-staggered linear Halbach magnet arrays are disposed on the same sliding support bar, which can significantly increase the magnetic induction intensity on the sliding support bar and prevent interference between the magnets that could reduce the magnets' attractive force.

[0066] For example, in another embodiment, the support portion 310 on the sliding housing 300 includes five sliding support bars, each of which is provided with two sets of first linear Halbach magnet arrays 321. On the first sliding support bar 311, the two sets of first linear Halbach magnet arrays 321 are arranged in a staggered pattern; on the second sliding support bar 312, the two sets of second linear Halbach magnet arrays 322 are arranged in a staggered pattern; on the third sliding support bar 313, the two sets of third linear Halbach magnet arrays 323 are arranged in a staggered pattern; on the fourth sliding support bar 314, the two sets of fourth linear Halbach magnet arrays 324 are arranged in a staggered pattern; and on the fifth sliding support bar 315, the two sets of fifth linear Halbach magnet arrays 325 are arranged in a staggered pattern. In the third embodiment, the two staggered sets of linear Halbach magnet arrays are provided on the same sliding support bar, which can significantly increase the magnetic induction intensity on the sliding support bar and also make the magnetic induction intensity on the sliding support bar more uniform.

[0067] For example, in Example 3, Figure 10 and Figure 11 As shown, the support portion 310 on the sliding housing 300 includes five sliding support bars. Three groups of first linear Halbach magnet arrays 321 are provided on the first sliding support bar 311, and the three groups of first linear Halbach magnet arrays 321 are arranged in parallel; three groups of second linear Halbach magnet arrays 322 are provided on the second sliding support bar 312, and the three groups of second linear Halbach magnet arrays 322 are arranged in parallel; three groups of third linear Halbach magnet arrays 323 are provided on the third sliding support bar 313, and the three groups of third linear Halbach magnet arrays 323 are arranged in parallel; three groups of fourth linear Halbach magnet arrays 324 are provided on the fourth sliding support bar 314, and the three groups of fourth linear Halbach magnet arrays 324 are arranged in parallel; two groups of fifth linear Halbach magnet arrays 325 are provided on the fifth sliding support bar 315, and the three groups of fifth linear Halbach magnet arrays 325 are arranged in parallel. At the same time, the first linear Halbach magnet array 321 and the second linear Halbach magnet array 322 are staggered. Correspondingly, the second linear Halbach magnet array 322, the third linear Halbach magnet array 323, the fourth linear Halbach magnet array 324, and the fifth linear Halbach magnet array 325 are staggered, respectively. Details thereof will not be repeated here. In Example 3, three sets of non-staggered linear Halbach magnet arrays are disposed on the same sliding support bar, which can significantly increase the magnetic induction intensity on the sliding support bar and prevent interference between the magnets that could reduce the magnets' attractive force.

[0068] For example, in the fourth embodiment, Figure 12 and Figure 13As shown, the support portion 310 on the sliding housing 300 includes five sliding support bars, three groups of first linear Halbach magnet arrays 321 are provided on the first sliding support bar 311, and the three groups of first linear Halbach magnet arrays 321 are staggered; three groups of second linear Halbach magnet arrays 322 are provided on the second sliding support bar 312, and the three groups of second linear Halbach magnet arrays 322 are staggered; three groups of third linear Halbach magnet arrays 323 are provided on the third sliding support bar 313, and the three groups of third linear Halbach magnet arrays 323 are staggered; three groups of fourth linear Halbach magnet arrays 324 are provided on the fourth sliding support bar 314, and the three groups of fourth linear Halbach magnet arrays 324 are staggered; two groups of fifth linear Halbach magnet arrays 325 are provided on the fifth sliding support bar 315, and the three groups of fifth linear Halbach magnet arrays 325 are staggered. At the same time, the first linear Halbach magnet array 321 and the second linear Halbach magnet array 322 are staggered. Correspondingly, the second linear Halbach magnet array 322, the third linear Halbach magnet array 323, the fourth linear Halbach magnet array 324, and the fifth linear Halbach magnet array 325 are staggered, respectively. Details thereof will not be repeated here. In Example 4, three groups of staggered linear Halbach magnet arrays are disposed on the same sliding support bar, which can significantly increase the magnetic induction intensity on the sliding support bar and also make the magnetic induction intensity on the sliding support bar more uniform.

[0069] As an optional embodiment, the staggered arrangement of the Halbach magnet arrays 321 on two adjacent sliding support bars is different. For example, the staggered arrangement of three groups of first linear Halbach magnet arrays 321 on the first sliding support bar 311 is different from the staggered arrangement of three groups of second linear Halbach magnet arrays 322 on the second sliding support bar 312. The first sliding support bar 311 is provided with three groups of first linear Halbach magnet arrays 321. From top to bottom, the three groups of first linear Halbach magnet arrays 321 are arranged toward the first side (for example, Figure 12 On the second sliding support bar 312, three sets of second linear Halbach magnet arrays 322 are provided. From top to bottom, the three sets of first linear Halbach magnet arrays 321 are toward the second side (e.g. Figure 12 on the left side) are staggered a certain distance.

[0070] As an optional embodiment, a first spacing L1 between linear Halbach magnet arrays on two adjacent sliding support bars is greater than a second spacing L2 between two adjacent groups of linear Halbach magnet arrays on the same sliding support bar.

[0071] In the display device of the present application, the first spacing L1 between the linear Halbach magnet arrays on two adjacent sliding support bars is limited by the spacing between the two adjacent sliding support bars. The second spacing L2 between two adjacent groups of linear Halbach magnet arrays on the same sliding support bar can be adaptively adjusted based on the width of the sliding support bar, the width of each group of linear Halbach magnet arrays, and the number of groups of linear Halbach magnet arrays. Ensuring that the first spacing L1 is greater than the second spacing L2 prevents the linear Halbach magnet arrays on two adjacent sliding support bars from interfering with each other, which could reduce the magnetic induction intensity on the sliding support bar.

[0072] For example, in the second, third and fourth embodiments, Figure 9 、 Figure 11 as well as Figure 13 As shown, the first distance L1 is greater than the second distance L2.

[0073] As an optional embodiment, the second distance L2 is greater than the width of the linear Halbach magnet array.

[0074] In the display device of the present application, the second distance L2 can be made larger than the width of the linear Halbach magnet array, thereby avoiding mutual interference between the two groups of linear Halbach magnet arrays located on the same sliding support bar.

[0075] As an optional implementation manner, all second intervals L2 are the same or different in size.

[0076] In the display device of the present application, the second spacing L2 between two adjacent groups of linear Halbach magnet arrays located on the same sliding support bar can be adaptively adjusted according to the width of the sliding support bar, the width of each group of linear Halbach magnet arrays, and the number of groups of linear Halbach magnet arrays. The second spacing L2 on the same sliding support bar and the second spacing L2 on different sliding support bars can be the same or different, and can also be arranged periodically. By adjusting the size of the second spacing L2, the magnetic induction intensity on the support bar can be adjusted to match the magnetic induction intensity with the deformation height H1 and the arch height H2 of the sliding area, so that the sliding area is flattened by force, thereby achieving the purpose of flattening the sliding area.

[0077] As an optional embodiment, the total length of the linear Halbach magnet array is greater than the sliding distance of the sliding housing 300 relative to the fixed housing 200 .

[0078] In the display device of the present application, in order to ensure that the rolling area can be attracted by the magnets on the sliding housing 300 when it is unfolded, the total length of the linear Halbach magnet array is made greater than the sliding distance of the sliding housing 300 relative to the fixed housing 200. As a result, after the sliding housing 300 is unfolded relative to the fixed housing 200, the orthographic projections of the rolling area on the sliding housing 300 are all located on the linear Halbach magnet array, ensuring the magnetic attraction of the linear Halbach magnet array on the rolling area.

[0079] As an optional embodiment, the number of magnets in the linear Halbach magnet array is 2n+1, where n is an integer greater than 1. For example, n can be an integer such as 1, 2, 3, 4, 5, or 6.

[0080] In the first to fourth embodiments, Figures 6 to 13 As shown, the number of magnets in the linear Halbach magnet array is an odd number. When the number of magnets in the linear Halbach magnet array is an odd number, the magnetic induction intensity of the linear Halbach magnet array can be evenly distributed.

[0081] In the display device of the present application, the magnet shape of the linear Halbach magnet array can be a triangular prism, and the triangular prism can be an equilateral triangular prism or an isosceles triangular prism. The side surfaces of two adjacent triangular prisms fit together and are arranged according to the Halbach array.

[0082] In the display device of the present application, the magnets of the linear Halbach magnet array can be devices capable of generating a magnetic field, such as electromagnets or permanent magnets. Those skilled in the art can make adaptive selections based on the design requirements of the display device, and this is not limited here.

[0083] In the actual device of the present application, the magnetic material layer of the flexible display module 100 is made of magnetic material, for example, stainless steel, magnetic carbon fiber composite metal, magnetic liquid metal alloy, etc., which is not limited here.

[0084] In this application, it should be noted that all directional indications in the embodiments of this application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0085] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0086] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0087] In this application, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0088] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display device, characterized in that: The display device includes: A flexible display module, comprising a fixed area and a sliding area connected to the fixed area, wherein at least a side of the sliding area facing away from the display surface is provided with a magnetic material layer; a fixed housing, used to support the fixed area; a sliding housing, slidably connected to the fixed housing so that the sliding housing overlaps and unfolds relative to the fixed housing, and is used to support the sliding area; and A rotating shaft is provided at one end of the sliding housing away from the fixed housing, and the sliding roll area is slidably arranged around the rotating shaft; The sliding housing includes a support portion and a magnet assembly, and the magnet assembly includes a plurality of Halbach magnet arrays staggered on the support portion; The support portion includes sliding support bars arranged at intervals, and each of the sliding support bars is provided with two or more groups of the Halbach magnet arrays; The Halbach magnet arrays on two adjacent sliding support bars are arranged in a staggered manner; The Halbach magnet arrays on the same sliding support bar are arranged in a staggered manner; A first spacing between the Halbach magnet arrays on two adjacent sliding support bars is greater than a second spacing between two adjacent groups of Halbach magnet arrays on the same sliding support bar; The second spacing is greater than a width of the Halbach magnet array.

2. The display device according to claim 1, wherein The array arrangement direction of the Halbach magnet array is the same as the length direction of the sliding support bar.

3. The display device according to claim 1, wherein All the second intervals may be the same or different in size.

4. The display device according to any one of claims 1 to 3, wherein: The total length of the Halbach magnet array is greater than a sliding distance of the sliding housing relative to the fixed housing.

5. The display device according to claim 4, wherein The number of magnets in the Halbach magnet array is 2n+1, where n is an integer greater than 1.

6. The display device according to claim 4, wherein The fixed housing includes fixed support bars that are spaced apart, a slideway is formed between two adjacent fixed support bars, and the sliding support bar is slidably arranged in the slideway.

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