Electronic device and flexible display apparatus thereof

Abstract

The application relates to an electronic device and a flexible display device thereof. The flexible display device comprises a flexible screen and an expansion mechanism. The flexible screen has a display surface. The flexible screen comprises a fixed part and a free part connected with each other. The free part is provided with a magnet. The free part can be unfolded or folded relative to the fixed part in a first direction. The expansion mechanism is connected with a side of the flexible screen opposite to the display surface. The expansion mechanism comprises a first support and a second support. The first support is fixed relative to the fixed part. The first support and the second support can move relative to each other in the first direction. The second support is provided with a magnetic attraction assembly. The magnetic attraction assembly is used for magnetically attracting the magnet, so as to adsorb at least part of the structure of the free part to the second support. The electronic device and the flexible display device thereof utilize the magnetic attraction force of the magnetic attraction assembly on the magnet to adsorb at least part of the structure of the free part to the second support, avoid the arching of the free part, and effectively improve the flatness of the display surface of the flexible screen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to an electronic device and a flexible display device thereof. BACKGROUND

[0002] In the current intelligent information era, users use mobile terminals more and more frequently, and the use scenarios are increasingly diversified. At present, the screen size of most portable intelligent mobile terminals is less than 7 inches. Compared with tablet and notebook products, the screen display area is limited, and the user operation experience is limited.

[0003] The emergence of flexible screens solves such problems well. By bending or rolling the flexible screen, a large screen can be accommodated in a small body, which is convenient for users to carry. At the same time, the small screen can be used as a normal mobile phone. When switching to a large screen, news reading and social chatting can be achieved at the same time, and the user's game operation experience can be improved, greatly enriching the user's use scenarios.

[0004] However, when the flexible screen of the current electronic device adjusts the size of the display area in the form of rolling, either the flexible screen cannot be well supported and local collapse occurs, or local stress occurs due to the setting of the supporting structure, and arching occurs. Whether the flexible screen appears local collapse or arching, it will cause the flatness of the display picture to be poor, which will adversely affect the texture of the display picture, and the user's experience is not good. SUMMARY

[0005] The present application provides an electronic device and a flexible display device thereof to solve the technical problem of poor flatness of the display picture of the flexible display device.

[0006] In one aspect, the present application provides a flexible display device, comprising:

[0007] A flexible screen having a display surface, the flexible screen comprising a fixed part and a free part connected together, the free part being provided with a magnet, and the free part being capable of being unfolded or rolled up relative to the fixed part in a first direction;

[0008] An extension mechanism connected to a side of the flexible screen opposite to the display surface, the extension mechanism comprising a first support and a second support, the first support being fixed relative to the fixed part, and the first support and the second support being capable of moving relative to each other in the first direction to make the free part unfold or roll up, and the second support being provided with a magnetic attraction assembly for magnetically attracting the magnet to adsorb at least part of the structure of the free part to the second support.

[0009] In another aspect, the embodiments of the present application provide an electronic device, comprising a shell assembly and the flexible display device as described above, the shell assembly being connected with the stretching mechanism, and part of the structure of the flexible screen being unfolded or folded into the shell assembly with the relative movement of the first support and the second support.

[0010] In the embodiments of the present application, the free part of the flexible screen is provided with a magnet, and the second support is provided with a magnetic attraction assembly for magnetically attracting the magnet. The magnetic attraction force of the magnetic attraction assembly on the magnet causes at least part of the structure of the free part to be adsorbed to the second support, avoiding the arching of the free part, thereby effectively improving the flatness of the display picture of the flexible screen. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0012] Figure 1 The first state schematic diagram of the electronic device provided by the embodiments of the present application is shown.

[0013] Figure 2 The second state schematic diagram of the electronic device provided by the embodiments of the present application is shown.

[0014] Figure 3 The exploded structure schematic diagram of the flexible display device in the first state of the electronic device provided by the embodiments of the present application is shown.

[0015] Figure 4 The structure schematic diagram of the stretching mechanism of the flexible display device in the second state is shown. Figure 3 The structure schematic diagram of the stretching mechanism of the flexible display device in the second state is shown.

[0016] Figure 5 The structure schematic diagram of the flexible display device of another embodiment is shown.

[0017] Figure 6 The cross-sectional structure schematic diagram of the electronic device in the first state of an embodiment is shown.

[0018] Figure 7 The cross-sectional structure schematic diagram of the electronic device in the second state of an embodiment is shown.

[0019] Figure 8 The arrangement position schematic diagram of the first magnet and the second magnet in the flexible display device of an embodiment is shown.

[0020] Figure 9 The flexible display device is based on Figure 8 The arrangement of the first magnet and the second magnet of the flexible display device shown, the magnetic induction intensity-distance relationship line graph;

[0021] Figure 10 In the flexible display device of an embodiment, the position diagram of the magnetic sensitive area under the arrangement of the first magnet and the second magnet;

[0022] Figure 11 In the flexible display device of an embodiment, the position diagram of the magnetic sensitive area under another arrangement of the first magnet and the second magnet;

[0023] Figure 12 In the flexible display device of an embodiment, the position diagram of the magnetic sensitive area under another arrangement of the first magnet and the second magnet;

[0024] Figure 13 In the flexible display device of another embodiment, the position diagram of the relative arrangement of the first magnet and the second magnet to the magnetic sensitive area;

[0025] Figure 14 In the flexible display device of another embodiment, the position diagram of the relative arrangement of the first magnet and the second magnet to the magnetic sensitive area;

[0026] Figure 15 In the flexible display device of an embodiment, the structure diagram of the magnetic attraction assembly;

[0027] Figure 16 In the flexible display device of another embodiment, the structure diagram of the magnetic attraction assembly.

[0028] Explanation of the reference signs:

[0029] 100, electronic device; 10, shell assembly; 10a, accommodation cavity; 12, first shell; 14, second shell; 20, flexible display device; 21, flexible screen; 212, fixed part; 214, free part; 21a, display surface; 22, stretching mechanism; 221, first support; 2211, spine strip; 2212, skeleton; 222, second support; 2221, slot; 211, magnet; 223, first magnet; 224, second magnet; 225, wave-absorbing piece; 226, magnetic isolation piece; C, magnetic sensitive area; a, first intersection; b, second intersection; 30, electromagnetic coil; 30a, core; 40, Hall sensor; 50, traction piece; 60, driving mechanism. DETAILED DESCRIPTION

[0030] For the purposes of this application, a more complete description of which will follow, reference will be made to the accompanying drawings referenced herein. The drawings illustrate preferred embodiments of the application. However, the application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It is noted that the scope of the application is defined by the appended claims and not by the foregoing description.

[0031] As used herein, "electronic device" means, but is not limited to, a device capable of receiving and / or transmitting communication signals via any one or more of the following connection means:

[0032] (1) via a wired connection means, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection;

[0033] (2) via a wireless interface means, such as a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter.

[0034] An electronic device configured to communicate via a wireless interface can be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

[0035] (1) a satellite telephone or cellular telephone;

[0036] (2) a Personal Communications System (PCS) terminal that can combine a cellular radiotelephone with data processing, facsimile, and data communications capabilities;

[0037] (3) a radiotelephone, a pager, an Internet / Intranet access, a Web browser, an organizer, a calendar, a Personal Digital Assistant (PDA) equipped with a Global Positioning System (GPS) receiver;

[0038] (4) a conventional laptop and / or palmtop receiver;

[0039] (5) a conventional laptop and / or palmtop radiotelephone transceiver, etc.

[0040] See, for example, Figure 1 and Figure 2The electronic device 100 provided in the embodiments of the present application can be a mobile phone or a tablet computer, which is not limited herein.

[0041] The electronic device 100 includes a shell assembly 10 and a flexible display device 20. The shell assembly 10 forms a receiving cavity 10a, and the flexible display device 20 is connected to the shell assembly 10. The electronic device 100 can further include a circuit board (not shown) and a battery (not shown), both of which can be arranged in the receiving cavity 10a of the shell assembly 10 (see FIG. 1). Figure 6 The circuit board can integrate a processor, a power management module, a storage unit, a baseband chip and the like of the electronic device 100. The flexible display device 20 is in communication connection with the processor, and the battery can supply power to the flexible display device 20 and electronic elements on the circuit board. Of course, the electronic device 100 can further include a camera module (not shown), which is in communication connection with the circuit board, and the battery can supply power to the camera module. It can be understood that the electronic device 100 in the embodiments of the present application includes but is not limited to a terminal device such as a mobile phone, a tablet computer or other portable electronic device 100. In the embodiments of the present application, a mobile phone is taken as an example for illustration.

[0042] In combination with FIGS. 1 and 2, Figure 3 and Figure 4 As shown in FIGS. 1 and 2, the flexible display device 20 includes a flexible screen 21 and an expansion mechanism 22. The flexible screen 21 has a display surface 21a, and the expansion mechanism 22 is connected to a side of the flexible screen 21 opposite to the display surface 21a, and is used to support the unfolded part of the flexible screen 21.

[0043] Specifically, the flexible screen 21 includes a fixed part 212 and a free part 214 connected to each other. The free part 214 can be unfolded or folded in the first direction relative to the fixed part 212. Specifically, the free part 214 of the flexible screen 21 can be bent, so as to adjust the unfolded length of the free part 214 relative to the fixed part 212, and thus adjust the length of the display picture of the flexible screen 21 in the first direction (i.e., the unfolded length of the display picture of the flexible screen 21). It should be noted that in some embodiments, the free part 214 can be bent in a curled direction in the first direction, or can be bent in a folded manner in the first direction, which is not limited herein.

[0044] The expansion mechanism 22 is connected to the side of the flexible screen 21 opposite to the display surface 21a. The expansion mechanism 22 includes a first support 221 and a second support 222. The first support 221 is fixed relative to the fixed part 212, and the first support 221 and the second support 222 can move relative to each other in the first direction, so as to make the free part 214 unfolded or folded. The first support 221 and the second support 222 are used to support the flexible screen 21.

[0045] In the embodiments of the present application, the positions of the two objects are relatively fixed, i.e., the two objects cannot produce relative motion under normal circumstances. The two objects in a relatively fixed position can be physically directly connected or indirectly connected through an intermediate structure. Taking the fixed part 212 and the first support 221 as an example, the fixed part 212 and the first support 221 are in a relatively fixed position. The fixed part 212 and the first support 221 can be in direct contact, such as using a threaded fastener or a clamping method to achieve direct fixation of the fixed part 212 and the first support 221. The fixed part 212 can also be indirectly fixed to the first support 221 through an adhesive layer, an intermediate connecting plate, or other structures. In some embodiments, the fixed part 212 can be fixedly connected to the shell assembly 10, and the shell assembly 10 is relatively fixed to the first support 221, so that the fixed part 212 and the first support 221 are relatively fixed. The implementation of the relative fixation between the fixed part 212 and the first support 221 will not be described here.

[0046] Continuing to combine Figure 3 and Figure 4 As shown in FIGS. 11 and 12, the free part 214 is provided with a magnet 211, and the second support 222 is provided with a magnetic attraction assembly. It should be noted that the magnetic attraction assembly can be directly mounted on the second support 222, or indirectly connected to the second support 222 through an intermediate structure. For example, in the embodiment in which the shell assembly 10 includes a first shell 12 and a second shell 14, and the second support 222 is relatively fixed to the second shell 14, the magnetic attraction assembly can be mounted on the second shell 14, so that the magnetic attraction assembly is connected to the second support 22 by using the relative fixation between the second shell 14 and the second support 22. The arrangement of the magnetic attraction assembly will not be described here, as long as the magnetic attraction assembly can play its corresponding role and does not interfere with the stretching or shrinking use of the flexible display device 20.

[0047] Specifically, the magnetic attraction assembly is used to magnetically attract the magnet 211 to attract at least part of the structure of the free part 214 to the second support 222, so that the free part 214 and the second support 222 maintain good wall sticking effect, avoiding the free part 214 from arching away from the second support 222. Therefore, by the magnetic attraction of the magnetic attraction assembly and the magnet 211, the overall flatness of the picture displayed by the flexible screen 21 is improved, and the user experience is improved.

[0048] The magnet 211 is made of a magnetic material such as iron, cobalt, nickel, manganese, and alloys thereof, so that the magnet 211 can be attracted by the magnetic attraction assembly.

[0049] The shape of the magnet 211 can be strip-shaped or sheet-shaped. For example, in some embodiments, the magnet 211 includes a plurality of magnetic support strips, the plurality of magnetic support strips are arranged at intervals along the first direction, and the length direction of each magnetic support strip is perpendicular to the first direction, so that the arrangement of the magnetic support strips does not interfere with the bending of the flexible screen 21 in the first direction. Therefore, the magnetic support strips can not only produce a supporting effect on the flexible screen 21 in a direction perpendicular to the first direction, but also can improve the supporting effect of the second support 222 on the flexible screen 21 when the magnetic support strips are attracted to the second support 222 by the magnetic attraction assembly, thereby avoiding the arching of the flexible screen 21 and effectively improving the flatness of the picture of the unfolded part of the flexible screen 21.

[0050] In some embodiments, the magnet 211 includes a magnetic rubber sheet attached to the side of the flexible screen 21 opposite to the display surface 21a and capable of bending with the free part 214. The magnetic rubber sheet not only meets the need of magnetic attraction of the magnetic attraction assembly, but also has good flexibility and can bend with the free part 214 without affecting the unfolding and folding of the flexible screen 21.

[0051] Of course, the magnet 211 can also be a film-shaped piece made of a magnetic material, which can be arranged in the flexible screen 21 as a layer structure of the flexible screen 21. Through this structure, the magnet 211 can not only adapt to the need of bending of the flexible screen 21 in the first direction, but also meet the need of attraction of the magnetic attraction assembly. The shape of the magnet 211 is not described here again, as long as it can adapt to the need of bending of the flexible screen 21 and can be attracted by the magnetic attraction assembly.

[0052] The magnetic attraction assembly includes a magnet, and the type of the magnet can be a neodymium iron boron magnet, a samarium cobalt magnet, or an aluminum-nickel-cobalt magnet.

[0053] In the embodiments of the present application, the shell assembly 10 is connected to the telescopic mechanism, and the shell assembly 10 can adapt to the need of relative motion between the first support 221 and the second support 222 of the telescopic mechanism, that is, the shell assembly 10 does not interfere with the relative motion between the first support 221 and the second support 222.

[0054] Specifically, when the first support 221 and the second support 222 move relative to each other, the flexible screen 21 is unfolded from the shell assembly 10 or folded into the shell assembly 10, thereby adjusting the unfolded length of the display picture of the flexible screen 21.

[0055] In some embodiments, the flexible display device 20 adjusts the unfolded length of the display screen 21 of the flexible screen 21 in a single-side stretching manner in the first direction, or in a double-side stretching manner in the first direction. It should be noted that the single-side stretching and the double-side stretching are in relation to the unfolding manner of the flexible screen 21. Specifically, the single-side stretching refers to the free part 214 of the flexible screen 21 unfolding or folding on one side of the fixed part 212, and in this case, the free part 214 can be considered to be arranged on one side of the fixed part 212. Correspondingly, the double-side stretching refers to the flexible screen 21 unfolding or folding on both sides of the fixed part 212 in the first direction, and in this case, the flexible screen 21 can be considered to include two free parts 214, and the two free parts 214 are respectively connected to the two ends of the fixed part 212.

[0056] For the convenience of understanding, the structure of the flexible display device 20 will be further described below in relation to the single-side stretching and the double-side stretching of the flexible screen 21.

[0057] In combination Figures 1 to 4 As shown in the embodiment of the single-side stretching of the flexible screen 21, the shell assembly 10 includes a first shell 12 and a second shell 14, and the second shell 14 and the first shell 12 are capable of relative movement in the first direction, so as to adapt to the relative movement of the first support 221 and the second support 222 in the first direction, so as to support the unfolded part of the flexible screen 21. Specifically, the stretching mechanism 22 is located in the space enclosed by the shell assembly 10 and supports the unfolded part of the flexible screen 21. Among them, the first support 221 is relatively fixed with the first shell 12, and the second support 222 is relatively fixed with the second shell 14, so that when the first shell 12 and the second shell 14 relatively move in the first direction, the first support 221 and the second support 222 move synchronously.

[0058] The second shell 14 and the first shell 12 are slidingly connected. In other words, the second shell 14 can slide relative to the first shell 12. For example, one of the first shell 12 and the second shell 14 can be provided with a sliding rail, and the other can slide along the sliding rail, so that the first shell 12 and the second shell 14 can be telescopic relative to each other.

[0059] The flexible screen 21 is connected to the first shell 12 and the second shell 14. With the relative movement of the first shell 12 and the second shell 14, part of the structure of the flexible screen 21 is unfolded or folded out of or into the shell assembly 10, so as to achieve the purpose of adjusting the unfolded length of the flexible screen 21.

[0060] Further, the first shell 12 can slide relative to the second shell 14 in the first direction to a first position and a second position. In combination Figure 1As shown, when the first shell 12 is in the first position, the electronic device 100 has a relatively small form factor, which is convenient for carrying. In combination with the fact that the first shell 12 is relatively thin, the electronic device 100 is convenient for carrying and using. Figure 2 As shown, when the first shell 12 is in the second position, the electronic device 100 can obtain a relatively large display area 21a, thereby obtaining a large-screen display visual experience to improve the use experience of the electronic device 100. Therefore, through the relative sliding expansion of the first shell 12 and the second shell 14, the display area of the flexible screen 21 can be adjusted.

[0061] It can be understood that in the embodiments described later in the present application, the first position, the second position, and similar expressions all refer to the relative position of the first shell 12 and the second shell 14. For the sake of simplicity, the expression "the first shell 12 is in the first position" or "when in the first position" refers to the first shell 12 being in the first position relative to the second shell 14, and the expression "the first shell 12 is in the second position" or "when in the second position" refers to the first shell 12 being in the second position relative to the second shell 14. It can be understood that since the first support 221 is fixed relative to the first shell 12 and the second support 222 is fixed relative to the second shell 14, when the first shell 12 is in the first position relative to the second shell 14, the first support 221 is also in the first position relative to the second support 222; correspondingly, when the first shell 12 is in the second position relative to the second shell 14, the first support 221 is also in the second position relative to the second support 222.

[0062] In combination with the fact that the first shell 12 is relatively thin, the electronic device 100 is convenient for carrying and using. Figure 1 And Figure 2 As shown, in some embodiments, when the first shell 12 is in the first position, the part of the display area 21a of the flexible screen 21 exposed outside the shell assembly 10 is substantially rectangular in shape, and the size thereof can be 4.5 inches to 7 inches, i.e., comparable to the size of the display screen of a general smartphone, so that the electronic device 100 is convenient for carrying and using. Compared with when the first shell 12 is in the first position, when the first shell 12 is in the second position, more of the display area 21a of the flexible screen 21 is exposed to the shell assembly 10, thereby presenting a larger display screen and realizing a large-screen display effect.

[0063] In combination with the fact that the first shell 12 is relatively thin, the electronic device 100 is convenient for carrying and using. Figure 5As shown, in the embodiment in which the flexible screen 21 includes two free sections 214, the two free sections 214 are respectively connected to the two ends of the fixed section 212, and the first support 221 is provided with a second support 222 on each of the opposite sides in the first direction, one of the second supports 222 is used to support one of the free sections 214 of the flexible screen 21, and the other second support 222 is used to support the other free section 214 of the flexible screen 21. In this embodiment, when the second support 222 on one side moves relative to the first support 221 in the first direction, the free section 214 on the side is unfolded or rolled up. When the second support 222 on the other side moves relative to the first support 221 in the first direction, the other free section 214 is unfolded or rolled up. Therefore, through the structure, the flexible display device 20 can realize the stretching of both sides of the flexible screen 21 to increase the size of the display screen of the flexible screen 21, and obtain a good large-screen display effect. Correspondingly, when large-screen display is not needed, the flexible display device 20 can be rolled up to improve portability.

[0064] In this embodiment, the shell assembly 10 can further include a third shell (not shown in the figure), which is movable relative to the first shell 12 in the first direction. It should be noted that the second shell 14 and the third shell are respectively located on the two sides of the first shell 12 in the first direction, and are respectively fixed relative to the second supports 222 on the corresponding sides. In this way, the shell assembly 10 can not only adapt to the stretching needs of the flexible display device 20, but also adapt to the needs of storing the part of the flexible screen 21 that is not unfolded and the stretching mechanism 22, so as to maintain the aesthetic appearance of the whole electronic device 100.

[0065] In the embodiments of the present application, the cooperating structure of the first support 221 and the second support 222 has various embodiments. The first support 221 and the second support 222 are slidably connected to each other, or the first support 221 and the second support 222 are provided on a common sliding member. The connection mode between the first support 221 and the second support 222 is not limited herein.

[0066] For the convenience of understanding, the mechanism of the stretching mechanism 22 will be further described below by way of example in combination with the first support 221 and the second support 222.

[0067] In combination with Figure 3 and Figure 4 As shown, the second support 222 is provided with a plurality of slots 2221, the plurality of slots 2221 all extend in the first direction, and are arranged in parallel with each other in the second direction, the second direction being perpendicular to the first direction. The first support 221 includes a spine strip 2211 and a plurality of skeletons 2212 connected to the spine strip 2211, the plurality of skeletons 2212 are arranged in a comb shape, and the plurality of skeletons 2212 are movably inserted into the plurality of slots 2221.

[0068] It should be noted that the skeleton 2212 and the slot 2221 are two objects in sliding fit, and the setting positions of the skeleton 2212 and the slot 2221 in the first support 221 and the second support 222 can be interchanged. Specifically, the slot 2221 can be formed in the first support 221, and correspondingly, the second support 222 includes the spine strip 2211 and a plurality of skeletons 2212 connected with the spine strip 2211, so that the first support 221 and the second support 222 can move relative to each other in the first direction by the fit of the skeleton 2212 and the slot 2221.

[0069] In combination Figure 5 In the embodiment in which the first support 221 is provided with the second support 222 on both sides in the first direction, the fit structures between the two second supports 222 and the first support 221 can be the same, that is, the fit structures between the two second supports 222 and the first support 221 are both the slot 2221 and the skeleton 2212 described above. For example, in some embodiments, the first support 221 is provided with the slot 2221 and the skeleton 2212 on both sides in the first direction, one of the second supports 222 is provided with the skeleton 2212 matched with the slot 2221 of the first support 221, and the other second support 222 is provided with the slot 2221 matched with the skeleton 2212 of the first support 221. For another example, in some embodiments, the first support 221 is provided with the slot 2221 on both sides in the first direction, and the two second supports 222 both include the skeleton 2212 matched with the slot 2221, or the first support 221 is provided with the skeleton 2212 on both sides in the first direction, and the two second supports 222 both include the slot 2221 matched with the skeleton 2212.

[0070] It should be noted that the fit structures between the two second supports 222 and the first support 221 can also be different, as long as the two second supports 222 can move relative to the first support 221 in the first direction to meet the need of supporting the unfolded part of the two free parts 214 of the flexible screen 21.

[0071] In the embodiments of the present application, the magnetic attraction of the magnetic attraction assembly arranged on the second support 222 to the magnet 211 can attract at least part of the structure of the free part 214 to the second support 222, so that the free part 214 will not arch when it is unfolded or folded, and the flatness of the display picture of the flexible screen 21 is improved.

[0072] There are various embodiments for the setting mode of the magnetic attraction assembly in the second support 222, and only the setting mode of the magnetic attraction assembly will be exemplarily described below, but it is not limited thereto.

[0073] In some embodiments, the second support 222 is provided with a mounting groove (not shown in the figure), and the magnetic assembly is mounted in the mounting groove, so that the magnetic assembly has good stability with the second support 222 and is not easy to be separated from the second support 222. It can be understood that the magnetic assembly is mounted in the mounting groove and is not too conspicuous, so that the second support 222 can well support the flexible screen 21. The second support 222 can be made of a magnetic material, so that the magnetic assembly can attract the second support 222 by its own magnetism, so as to enhance the mounting stability. In some embodiments, the magnetic assembly can be connected with the second support 222 by means of glue bonding, screw connection and the like, so as to further improve the mounting stability of the magnetic assembly in the mounting groove. The mounting mode of the magnetic assembly is not limited herein. In other embodiments, the magnetic assembly can also be arranged on the second support 222 in other manners, for example, the second support 222 is provided with a magnetized part, and the magnetized part is used for magnetization to form the magnetic assembly. The magnetized part is made of a magnetic material such as iron, cobalt, nickel and manganese, so as to obtain the magnetic assembly by magnetization.

[0074] It should be noted that, whether the magnetic assembly includes a plurality of magnets, a plurality of magnetized parts, or a plurality of magnets and a plurality of magnetized parts. These magnets and magnetized parts can be located in the same plane or different planes. Taking the magnetic assembly including a plurality of magnets as an example, some of the plurality of magnets can be arranged on the surface of the second support 222 facing the flexible screen 21, and the other magnets can be arranged on the surface of the second support 222 facing away from the flexible screen 21. Further, in the embodiment in which the second support 222 is provided with a mounting groove for mounting the magnets, the second support 222 is provided with mounting grooves on both sides facing and facing away from the flexible screen 21, so as to meet the need of mounting the magnets on the opposite sides of the second support 222. It can be understood that the plurality of magnets can also be mounted on the same side of the second support 222, for example, the plurality of magnets are connected to the side of the second support 222 facing the flexible screen 21, or the plurality of magnets are connected to the side of the second support 222 facing away from the flexible screen 21.

[0075] Correspondingly, in the embodiment in which the magnetic assembly includes the magnetized part, the arrangement mode of the magnetized part can refer to the arrangement mode of the magnet described above, which will not be described herein.

[0076] It should be noted that, since the magnetized part can generate magnetism by magnetization, when the second support 222 is processed, the part of the second support 222 where the magnetized part is to be formed can be filled with magnetized material, so that the magnetized part is integrated with the second support 222. The integrated structure has good overall stability, and only the magnetized part at the corresponding position needs to be magnetized to obtain the magnetic attraction assembly capable of attracting the magnet 211.

[0077] During magnetization, by adjusting the direction of magnetization, the polarity of different magnetized parts can be conveniently configured. For example, the south poles of some magnetized parts face the display surface 21a, and the south poles of other magnetized parts face away from the display surface 21a, so that the magnetic induction intensity of these magnetized parts in a specific area (for example, the "magnetic sensitive area C" hereinafter) weakens each other.

[0078] Specifically, in some embodiments, by improving the arrangement of the magnetic attraction assembly in the second support 222, the magnetic field environment generated by the magnetic attraction assembly in the second support 222 not only helps to improve the attraction force between the magnetic attraction assembly and the magnet 211 on the flexible screen 21 to reduce the risk of arching of the flexible screen 21, but also reduces the magnetic interference of the magnetic sensitive element arranged in the electronic device 100 or the flexible display device 20.

[0079] For ease of understanding, the magnetic attraction assembly is taken as an example including multiple magnets, and is described below with reference to FIG. 2. Hereinafter, the area where the magnetic sensitive element is arranged is referred to as the "magnetic sensitive area C". Figure 4

[0080] In some embodiments, the flexible display device 20 has at least one magnetic sensitive area C, and the relative position of the magnetic sensitive area C to the first support 221 or the second support 222 is fixed. Understandably, as the area where the magnetic sensitive element is arranged, the lower the magnetic induction intensity of the magnetic attraction assembly in the magnetic sensitive area C, the smaller the magnetic interference of the magnetic attraction assembly on the magnetic sensitive element.

[0081] The multiple magnets of the magnetic attraction assembly are arranged with different magnetic pole orientations. For ease of description, the magnets with the north poles facing the display surface 21a are referred to as "first magnets 223", and the magnets with the south poles facing the display surface 21a are referred to as "second magnets 224". Specifically, the magnetic attraction assembly includes multiple first magnets 223 and multiple second magnets 224. In the magnetic field environment of the magnetic attraction assembly, the north poles of the first magnets 223 face the display surface 21a, the south poles of the first magnets 223 face away from the display surface 21a, the south poles of the second magnets 224 face the display surface 21a, and the north poles of the second magnets 224 face away from the display surface 21a.

[0082] ​In this embodiment, when the flexible display device 20 is unfolded to the preset position, the magnetic induction intensity of the first magnet 223 and the second magnet 224 in the magnetic sensitive area C weakens each other, so that the magnetic induction intensity of the first magnet 223 and the second magnet 224 in the magnetic sensitive area C not only does not superimpose, but also weakens each other, so that the overall magnetic induction intensity of the magnetic sensitive area C is at a low level, thereby reducing the magnetic interference on the magnetic sensitive element arranged in the magnetic sensitive area C as much as possible. In some embodiments, the magnetic induction intensity of the first magnet 223 and the second magnet 224 in the magnetic sensitive area C completely cancels out, so that the magnetic induction intensity of the magnetic sensitive area C is reduced to 0, at this time, the magnetic sensitive element is completely free from the magnetic interference of the magnetic attraction assembly.

[0083] It should be noted that the preset position is a position where the flexible screen 21 is completely unfolded or completely folded. In some embodiments, the preset position is one of the intermediate positions between the position where the flexible screen 21 is completely unfolded and the position where the flexible screen 21 is completely folded, for example, the flexible screen 21 is unfolded to 1 / 10, 1 / 9, 1 / 7, 1 / 6, 1 / 4, 1 / 3 or 1 / 2 of the maximum unfolding length, wherein the maximum unfolding length is the length of the flexible screen 21 when it is completely unfolded.

[0084] In the embodiment in which the flexible display device 20 is provided with the magnetic sensitive element, when the flexible display device 20 is unfolded to the preset position, the magnetic sensitive element is located in the magnetic sensitive area C of the flexible display device 20, and the magnetic induction intensity of the magnetic attraction assembly in the magnetic sensitive area C is less than or equal to the critical value of the magnetic field interference that the magnetic sensitive element can withstand. Assuming that the critical value of the magnetic field interference that the magnetic sensitive element can withstand is B, when the flexible display device 20 is unfolded to the preset position, the magnetic induction intensity of the magnetic attraction assembly in the magnetic sensitive area C is less than or equal to B.

[0085] In this embodiment, in the preset position, the magnetic induction intensity of the magnetic attraction assembly on the magnetic sensitive element is within the range that the magnetic sensitive element can withstand, so that the magnetic sensitive element can normally play the corresponding function.

[0086] In some embodiments, the magnetic sensitive element is a geomagnetic sensor, which is used to detect the earth's magnetic field, so that the electronic device 100 realizes the compass function.

[0087] In some embodiments, in combination with Figure 6 and Figure 7As shown, the magnetic sensitive element can be a Hall sensor 40 for detecting a signal indicating that the flexible display device 20 is unfolded or folded to a preset position. For example, when the flexible screen 21 is unfolded to the maximum unfolded length, the Hall sensor 40 detects the signal indicating that the flexible screen 21 is unfolded or folded to the preset position. Of course, the Hall sensor 40 can be arranged at other positions of the electronic device 100 to detect a signal indicating that the flexible screen 21 is unfolded to a position, for example, 1 / 10, 1 / 9, 1 / 7, 1 / 6, 1 / 4, 1 / 3 or 1 / 2 of the maximum unfolded length. Since the magnetic sensitive element is located at the preset position, the magnetic induction intensity of the magnetic attraction assembly on the magnetic sensitive element is within the range that the magnetic sensitive element can withstand, and thus the aforementioned geomagnetic sensor and Hall sensor 40 can normally play their respective roles.

[0088] The flexible display device 20 is electrically connected with a controller (not shown in the figure), and the controller is electrically connected with the electromagnetic coil 30 (see Figure 6 and Figure 7 As shown, when the magnetic induction intensity of the magnetic attraction assembly in the magnetic sensitive area C is greater than the critical value of the magnetic field interference that the magnetic sensitive element can withstand, the controller is configured to control the electromagnetic coil 30 to generate a magnetic field opposite to the magnetic field direction of the magnetic attraction assembly according to the magnetic induction intensity of the magnetic attraction assembly in the magnetic sensitive area C detected by the magnetic sensitive element, so as to further reduce the magnetic induction intensity of the magnetic sensitive area C, and make the magnetic induction intensity of the magnetic sensitive area C recover to below the critical value of the magnetic field interference that the magnetic sensitive element can withstand. Of course, the electromagnetic coil 30 can also be used to adjust the magnetic induction intensity of the magnetic sensitive area C to 0, so that the magnetic sensitive element located in the magnetic sensitive area C is not disturbed by the magnetic attraction assembly when working.

[0089] It should be noted that the electromagnetic coil 30 can be provided with a core 30a. With the core 30a, the electromagnetic coil 30 can generate a greater magnetic field under the same current, so as to improve the adjustment efficiency of the magnetic induction intensity of the magnetic sensitive area C.

[0090] In some embodiments, the absolute value of the sum of the magnetic induction intensities of the plurality of first magnets 223 in the magnetic sensitive area C is equal to the absolute value of the sum of the magnetic induction intensities of the plurality of second magnets 224 in the magnetic sensitive area C. In this embodiment, the magnetic induction intensities of the plurality of first magnets 223 and the plurality of second magnets 224 in the magnetic sensitive area C completely cancel out, so that the magnetic induction intensity of the magnetic sensitive area C is 0, and thus the magnetic sensitive element corresponding to the magnetic sensitive area C will not be disturbed by the magnetic attraction assembly.

[0091] In some embodiments, the plurality of first magnets 223 and the plurality of second magnets 224 are all magnets of the same specification, and the number of first magnets 223 and second magnets 224 is equal. The first magnets 223 and second magnets 224 are arranged in pairs symmetrically about a straight line passing through the magnetically sensitive region C as an axis of symmetry. It should be noted that magnets of the same specification refer to magnets that are "of the same size" and "have the same surface magnetic magnitude".

[0092] For ease of understanding, combined with Figure 8 As shown, Figure 8 The magnet facing the North Pole of the display surface 21a is marked with "⊙", and the magnet facing the South Pole of the display surface 21a is marked with... Figure 8 As shown, the first magnet 223 and the second magnet 224 are symmetrically arranged along a line of symmetry o. The projection of the line of symmetry o onto the display surface 21a of the flexible screen intersects the edge of the display surface 21a in a second direction at a first intersection point a and a second intersection point b. The midpoint of the line connecting the first magnet 223 and the second magnet 224 is located near or coincides with the midpoint of the line connecting the first intersection point a and the second intersection point b. The magnetic induction intensity is measured by moving a magnetic field measuring instrument along the line of symmetry from the first intersection point a to the second intersection point b, obtaining the following... Figure 9 The graph shows the relationship between magnetic field strength and distance. From... Figure 9 As can be seen, the magnetic induction intensity near the first intersection point a tends to be 0. As the magnetic field measuring instrument moves from the first intersection point a to the second intersection point b, the measured magnetic induction intensity gradually increases, reaching its maximum value at the midpoint between the first and second intersection points a and b (approximately 1.50 mm from the first intersection point a). Then, as it approaches the second intersection point b, the magnetic induction intensity gradually decreases, eventually approaching 0. Therefore, when the first magnet 223 and the second magnet 224 are arranged with opposite magnetic poles, a position where the magnetic induction intensity tends to be 0 can be found on the line of symmetry. This position is then designated as the magnetically sensitive region C. The magnetically sensitive element located in the magnetically sensitive region C will not be affected by the magnetic interference from the magnetic attraction assembly.

[0093] For example, combined Figure 10 As shown, the distance from the magnetically sensitive region C to the first intersection point a is e. The value of e can be set according to the magnetic field requirements at the corresponding location. For example, with... Figure 9 Taking the magnetic induction intensity-distance change line shown as an example, when the critical value of the magnetic field interference that the magnetic sensitive element can withstand at the magnetic sensitive area is 12.5mT, then the range of e that satisfies the requirements of the magnetic sensitive area C between the first intersection point a and the second intersection point b is 0mm~1.25mm and 1.75mm~3.50mm.

[0094] Combination Figure 11As shown, the first magnets 223 and the second magnets 224 arranged symmetrically can be multiple, and specifically, an equal number of the first magnets 223 and the second magnets 224 are arranged symmetrically with the straight line of the magnetic sensitive region C as the axis of symmetry. In this way, the magnetic induction intensity of the magnetic sensitive region can also be below the critical value of the magnetic sensitive element that can withstand magnetic field interference.

[0095] It should be noted that the arrangement of the multiple first magnets 223 and the multiple second magnets 224 is not limited to the above-mentioned example, and in some embodiments, other arrangements can also be adopted, as long as the magnetic induction intensity of the corresponding sensitive region is below the critical value of the magnetic sensitive element that can withstand magnetic field interference.

[0096] The arrangement of the first magnets 223 and the second magnets 224 will be described below only by way of example.

[0097] For example, in combination with Figure 12 As shown, in some embodiments, in the first direction, the first magnets 223 and the second magnets 224 are arranged alternately on the second support 222, and in the direction perpendicular to the first direction, the first magnets 223 and the second magnets 224 are arranged alternately on the second support 222.

[0098] In some embodiments, e first magnets 223 constitute a first magnetic attraction unit, and f second magnets 224 constitute a second magnetic attraction unit, e and f are both natural numbers, and e is greater than f. For example, as shown in Figure 13 As shown, 1 first magnet 223 constitutes a first magnetic attraction unit, and 2 second magnets 224 constitute a second magnetic attraction unit.

[0099] The absolute value of the magnetic induction intensity of the first magnetic attraction unit in the magnetic sensitive region C is equal to the absolute value of the magnetic induction intensity of the second magnetic attraction unit in the magnetic sensitive region C. Through such an arrangement, even if the magnetic induction intensity of any one of the first magnets 223 in the first magnetic attraction unit in the magnetic sensitive region C is less than the magnetic induction intensity of any one of the second magnets 224 in the second magnetic attraction unit in the magnetic sensitive region C, by configuring different numbers of second magnets 224 and first magnets 223, the combination of them weakens or cancels each other in the magnetic induction intensity in the magnetic sensitive region C, so as to facilitate reducing the magnetic interference on the magnetic sensitive element.

[0100] In some embodiments, the magnetic induction intensity of any one of the first magnets 223 in the third magnetic attraction unit at the magnetic sensitive region C is greater than the magnetic induction intensity of any one of the second magnets 224 in the fourth magnetic attraction unit at the magnetic sensitive region C. In this embodiment, m first magnets 223 form a third magnetic attraction unit, n second magnets 224 form a fourth magnetic attraction unit, m and n are natural numbers, m is less than n, and the absolute value of the magnetic induction intensity of the third magnetic attraction unit at the magnetic sensitive region C is equal to the absolute value of the magnetic induction intensity of the fourth magnetic attraction unit at the magnetic sensitive region C.

[0101] In combination Figure 14 As shown in FIG. 1, at least one first magnet 223 and at least one second magnet 224 have the same specifications and are symmetrically arranged in pairs with a straight line passing through the magnetic sensitive region C as the axis of symmetry. It should be noted that, Figure 14 Only four pairs of first magnets 223 and second magnets 224 are shown to be arranged in an axis-symmetric manner. The axes of symmetry of these pairs of first magnets 223 and second magnets 224 can be the same or different, which will not be described here.

[0102] In some embodiments, the magnetic induction intensity of the sensitive region is also reduced by setting wave-absorbing members or magnetic shielding members.

[0103] For example, in combination Figure 15 As shown in FIG. 1, the magnetic induction intensity of the magnetic sensitive region C by the plurality of second magnets 224 is relatively strong, and the magnetic attraction assembly further comprises a plurality of wave-absorbing members 225. The plurality of wave-absorbing members 225 are arranged on one of the plurality of first magnets 223 and the plurality of second magnets 224 that has a relatively strong magnetic induction intensity on the magnetic sensitive region C, and the wave-absorbing members 225 are arranged on the side of the magnetic sensitive region C to reduce the magnetic induction intensity of the magnetic sensitive region C.

[0104] For example, in combination Figure 16 As shown in FIG. 1, the magnetic induction intensity of the magnetic sensitive region C by the plurality of first magnets 223 is relatively strong, and the magnetic attraction assembly further comprises a plurality of magnetic shielding members 226. The plurality of magnetic shielding members 226 are arranged on one of the plurality of first magnets 223 and the plurality of second magnets 224 that has a relatively strong magnetic induction intensity on the magnetic sensitive region C, and the magnetic shielding members 226 are arranged on the side of the magnetic sensitive region C to reduce the magnetic induction intensity of the magnetic sensitive region C.

[0105] The arrangement of the wave-absorbing members 225 and the magnetic shielding members 226 can refer to the arrangement of the first magnets 223 and the second magnets 224, which will not be described here.

[0106] The absorbing component 225 can be made of SPCC (generally cold-rolled carbon steel sheet and strip), magnetic film, or other absorbing materials. The absorbing component 225 changes the distribution direction of magnetic field lines, thereby altering its influence on the magnetically sensitive region C. The magnetic shielding component 226 can be made of low-permeability materials such as silicon steel sheet or permalloy.

[0107] See again Figure 6 and Figure 7 As shown, the electronic device 100 is provided with a traction member 50, which is located at the end of the second housing 14 away from the first housing 12. During the process of the second housing 14 switching from a first position to a second position relative to the first housing 12, the traction member 50 can traction the flexible screen 21 to deform, so that the portion of the flexible screen 21 unfolded in the second housing 14 is flat. When the second housing 14 is in the first position, the free portion 214 of the flexible screen 21 bypasses the traction member 50. The traction member 50 can limit the bending radius of the flexible screen 21 within a suitable range to avoid damage to the flexible screen 21 caused by an excessively small bending radius. Of course, the traction member 50 can also prevent the flexible screen 21 from having an excessively large bending radius, which would result in an excessively large thickness of the electronic device 100.

[0108] In some embodiments, the traction member 50 may be a rotating shaft structure with protruding teeth, and the flexible screen 21 is linked with the traction member 50 through engagement or other means. When the second housing 14 slides relative to the first housing 12, the portion of the flexible screen 21 engaged with the traction member 50 is moved by the traction member 50 and is extended from or retracted into the housing assembly 10.

[0109] It should be noted that in the embodiment where the magnet 211 is strip-shaped, the magnets 211 arranged at intervals can form a transmission component that meshes with the convex teeth of the traction member 50. This allows the magnets 211 to not only meet the adsorption requirements of the magnetic attraction component, but also to meet the needs of the traction member 50 and the flexible screen 21 for meshing and linkage. This can improve the flatness of the flexible screen 21 while reducing the number of structural components, which is beneficial to the thinning and lightening of the electronic device 100.

[0110] In other embodiments, the traction member 50 is a round shaft without teeth. During the transition of the second housing 14 from the first position to the second position, the traction member 50 expands a portion of the flexible screen 21 attached to it, exposing more of the flexible screen 21 to the outside of the housing assembly 10 and placing it in a flat position. In this embodiment, the traction member 50 is rotatably mounted on the second housing 14. As the flexible screen 21 is gradually unfolded, the traction member 50 rotates with the movement of the flexible screen 21, reducing the resistance experienced by the flexible screen 21 during unfolding and reducing wear at the contact points between the traction member 50 and the flexible screen 21.

[0111] In some embodiments, the traction member 50 can also be fixed on the second housing 14, and the traction member 50 has a smooth surface. In the process of unfolding the flexible screen 21 to the second housing 14, the traction member 50 is in slidable contact with the flexible screen 21 through the smooth surface thereof. In other words, in this embodiment, the traction member 50 can be integrally formed or welded with the second housing 14, and the traction member 50 can be regarded as a part of the second housing 14, and the free part 214 of the flexible screen 21 passes around the end of the second housing 14 away from the first housing 12 and extends into the shell assembly 10.

[0112] In the process of switching the second housing 14 from the first position to the second position, the flexible screen 21 can be unfolded from the second housing 14 or folded into the shell assembly 10 under the traction of the traction member 50. It can be understood that a plurality of intermediate positions can also be provided between the first position and the second position to realize the positioning of the second housing 14 relative to the first housing 12 at the plurality of intermediate positions, and to make the flexible screen 21 have different display surfaces 21a at different intermediate positions, thereby expanding the use scenarios of the electronic device 100.

[0113] The relative movement of the first housing 12 and the second housing 14 of the electronic device 100 can be realized in a manual manner or an electrically controlled manner.

[0114] For example, when the manual manner is adopted, the user only needs to hold the first housing 12 and the second housing 14 and move them away from each other to place the second housing 14 in the second position. Correspondingly, when the second housing 14 is in the second position, if it is needed to fold the electronic device 100, the first housing 12 and the second housing 14 only need to be moved towards each other.

[0115] In combination with FIGS. 1 and 2, Figure 2 and Figure 4 When the electrically controlled manner is adopted, a driving mechanism 60 can be provided in the shell assembly 10 of the electronic device 100. Specifically, the driving mechanism 60 is arranged in the accommodating cavity 10a of the shell assembly 10 and is used to drive the relative movement of the first housing 12 and the second housing 14, so that the second housing 14 drives the flexible screen 21 to unfold from the shell assembly 10 or to be folded into the shell assembly 10.

[0116] In some embodiments, the first housing 12 and the second housing 14 are connected to the driving mechanism 60 and move relatively under the traction of the driving mechanism 60. Specifically, the driving mechanism 60 has a fixed part 212 and a movable part, and the movable part can move relative to the fixed part 212 when the driving mechanism 60 works. The fixed part 212 is connected to the first housing 12, and the movable part is connected to the second housing 14 and is used to drive the second housing 14 to move relative to the first housing 12.

[0117] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0118] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A flexible display device, characterized in that, include: A flexible screen has a display surface. The flexible screen includes a fixed part and a free part connected to each other. The free part is provided with a magnet. The free part can be expanded or retracted relative to the fixed part in a first direction. The magnet includes a plurality of magnetic support strips. The plurality of magnetic support strips are arranged at intervals along the first direction, and the length direction of each magnetic support strip is perpendicular to the first direction. An extension mechanism is connected to the side of the flexible screen facing away from the display surface. The extension mechanism includes a first support member and a second support member. The first support member is fixed relative to the fixed part. The first support member and the second support member can move relative to each other along the first direction so that the free part can be extended or retracted. The second support member is provided with a magnetic attraction component. The magnetic attraction component is used to magnetically attract the magnet so as to attract at least a part of the structure of the free part to the second support member. The magnetic attraction component includes a plurality of first magnets and a plurality of second magnets. In the magnetic field environment of the magnetic attraction component, the flexible display device has at least one magnetically sensitive area. The magnetically sensitive area is fixed in relative position with the first support member or the second support member. The north pole of the first magnet faces the display surface, and the south pole of the first magnet faces away from the display surface. The south pole of the second magnet faces the display surface, and the north pole of the second magnet faces away from the display surface. When the flexible display device is extended to a preset position, the magnetic induction intensity of the first magnet and the second magnet in the magnetically sensitive area weakens each other. A traction member is disposed at the end of the second housing away from the first housing. The traction member is a rotating shaft structure with protruding teeth, which mesh with a plurality of magnetic support bars.

2. The flexible display device according to claim 1, characterized in that, The magnet also includes a magnetic rubber sheet, which is attached to the side of the flexible screen facing away from the display surface and can be bent along with the free part.

3. The flexible display device according to claim 1, characterized in that, The preset position is either the position where the flexible screen is fully unfolded or the position where it is fully retracted, or the preset position is one of the intermediate positions between the position where the flexible screen is fully unfolded and the position where it is fully retracted.

4. The flexible display device according to claim 1, characterized in that, Includes a magnetic sensitive element. When the flexible display device is unfolded to the preset position, the magnetic sensitive element is located in the magnetic sensitive area of ​​the flexible display device, and the magnetic induction intensity of the magnetic attraction component in the magnetic sensitive area is less than or equal to the critical value at which the magnetic sensitive element can withstand magnetic field interference.

5. The flexible display device according to claim 4, characterized in that, The flexible display device is electrically connected to a controller, and the controller is electrically connected to an electromagnetic coil. When the magnetic induction intensity of the magnetic attraction component in the magnetically sensitive area is greater than the critical value that the magnetic sensitive element can withstand magnetic field interference, the controller is used to control the electromagnetic coil to generate a magnetic field opposite to the magnetic field direction of the magnetic attraction component based on the magnetic induction intensity of the magnetic attraction component in the magnetically sensitive area detected by the magnetic sensitive element.

6. The flexible display device according to claim 1, characterized in that, The absolute value of the sum of the magnetic induction intensities of the plurality of first magnets in the magnetically sensitive region is equal to the absolute value of the sum of the magnetic induction intensities of the plurality of second magnets in the magnetically sensitive region.

7. The flexible display device according to claim 6, characterized in that, The magnetic attraction assembly further includes multiple wave-absorbing elements, which are disposed on the one with stronger magnetic induction intensity of the magnetically sensitive area by the multiple first magnets and the multiple second magnets, and the wave-absorbing elements face the side where the magnetically sensitive area is located. And / or, the magnetic attraction assembly further includes a plurality of magnetic isolation components, which are disposed on the one of the plurality of first magnets and the plurality of second magnets with stronger magnetic induction intensity on the magnetically sensitive area, and the magnetic isolation components face the side where the magnetically sensitive area is located.

8. The flexible display device according to claim 6, characterized in that, The first magnets and the second magnets are all magnets of the same specification, and the number of the first magnets and the second magnets are equal. The first magnets and the second magnets are arranged in pairs symmetrically with a straight line passing through the magnetically sensitive area as the axis of symmetry.

9. The flexible display device according to claim 6, characterized in that, In the first direction, the first magnet and the second magnet are alternately arranged on the second support member, and in the direction perpendicular to the first direction, the first magnet and the second magnet are alternately arranged on the second support member.

10. The flexible display device according to claim 7, characterized in that, e first magnets constitute a first magnetic attraction unit, f second magnets constitute a second magnetic attraction unit, where e and f are both natural numbers, e is greater than f, and the absolute value of the magnetic induction intensity of the first magnetic attraction unit in the magnetically sensitive area is equal to the absolute value of the magnetic induction intensity of the second magnetic attraction unit in the magnetically sensitive area. And / or, m of the first magnets constitute a third magnetic attraction unit, and n of the second magnets constitute a fourth magnetic attraction unit, where m and n are both natural numbers, and m is less than n. The absolute value of the magnetic induction intensity of the third magnetic attraction unit in the magnetically sensitive area is equal to the absolute value of the magnetic induction intensity of the fourth magnetic attraction unit in the magnetically sensitive area.

11. The flexible display device according to claim 10, characterized in that, At least one of the first magnets and at least one of the second magnets are identical in size and are arranged symmetrically in pairs with a straight line passing through the magnetically sensitive region as the axis of symmetry.

12. The flexible display device according to claim 1, characterized in that, The flexible screen includes two free parts, which are respectively connected to the two ends of the fixed part. The first support member is provided with a second support member on both sides of the opposite side in the first direction. One of the second support members is used to support one of the free parts of the flexible screen, and the other second support member is used to support the other free part of the flexible screen.

13. The flexible display device according to claim 1, characterized in that, One of the first support member and the second support member has a plurality of slots, all of which extend along a first direction and are arranged parallel to each other along a second direction, which is perpendicular to the first direction. The other of the first support member and the second support member includes a spine and a plurality of skeletons connected to the spine. The plurality of skeletons are arranged in a comb-like pattern and are movably inserted into the plurality of slots.

14. The flexible display device according to claim 13, characterized in that, The second support member has a mounting groove, and the magnetic suction assembly is installed in the mounting groove; Alternatively, the second support member may be provided with a magnetization section, which is used to magnetize the magnetic attraction assembly.

15. An electronic device, characterized in that, The device includes a shell assembly and a flexible display device as described in any one of claims 1-14, wherein the shell assembly is connected to the extension mechanism, and a portion of the structure of the flexible screen extends from or retracts into the shell assembly as the first support member and the second support member move relative to each other.

Images