Flexible display device

Abstract

A flexible display device includes: a support structure (3) capable of switching between a rolled-up state and a flattened state, such that the support surface of the support structure (3) can switch between a curved surface and a flat surface; a flexible display screen (2) at least a portion of which is fixed to the support surface of the support structure (3); and a magnetic component including a plurality of first magnetic elements (41) disposed on the support structure (3), the plurality of first magnetic elements (41) being used to attract each other when the support structure (3) is in a rolled-up state.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically to a flexible display device. Background Technology

[0002] Flexible displays are gaining popularity due to their thinness, flexibility, and good mechanical properties, and their applications are becoming increasingly widespread.

[0003] In some applications, flexible displays can be made into inward-rolling displays. When in use, the flexible display can be flattened out; when not in use, the flexible display screen can be rolled up like a scroll. Summary of the Invention

[0004] This disclosure provides a flexible display device, including:

[0005] A support structure capable of switching between a curled state and a flattened state, so that the support surface of the support structure can switch between a curved surface and a plane;

[0006] A flexible display screen, at least a portion of which is fixed to the support surface of the support structure;

[0007] A magnetic component, comprising a plurality of first magnetic elements disposed on the support structure, the plurality of first magnetic elements being used to attract each other when the support structure is in a curled state.

[0008] In some embodiments, a first mounting groove is provided on the surface of the support structure opposite to the support surface, and the first magnetic element is disposed in the first mounting groove.

[0009] In some embodiments, the flexible display device further includes: a housing and a control motherboard, the control motherboard being disposed within the housing, the support structure being connected to the housing, and the support structure being wound around the housing when in a curled state;

[0010] The flexible display screen includes a display unit and a driving unit connected to the display unit. The display unit is fixed to the support surface of the support structure, and the driving unit passes through a first cutout on the housing and is connected to the control motherboard.

[0011] In some embodiments, the housing is provided with a second mounting groove, and the magnetic assembly further includes a second magnetic element disposed in the second mounting groove, wherein the second magnetic element and the plurality of first magnetic elements attract each other when the support structure is in a curled state.

[0012] In some embodiments, the support structure includes a plurality of support members extending along a first direction, each support member having a sub-support surface, the sub-support surfaces of the plurality of support members collectively forming the support surface, and adjacent support members being hinged to each other.

[0013] In some embodiments, the housing includes: a first housing portion and a second housing portion, the first housing portion and the second housing portion being disposed opposite to each other and connected to form a cylindrical structure; the outer surface of the first housing portion has a first edge and a second edge disposed opposite to each other, the outer surface of the second housing portion has a third edge and a fourth edge disposed opposite to each other, the first edge, the second edge, the third edge and the fourth edge all extending along the first direction, the first edge being adjacent to the third edge, and the second edge being adjacent to the fourth edge;

[0014] A step is formed between the position on the outer surface of the first housing portion near the first edge and the position on the outer surface of the second housing portion near the third edge; the plurality of support members include: a first support member and a plurality of second support members connected in sequence, the first support member being fixed on the outer surface of the second housing portion near the third edge.

[0015] In some embodiments, the outer surface of the cylindrical structure includes a plurality of flat surfaces, and when the support structure is in a rolled-up state, the surface of each support member facing the cylindrical structure is substantially parallel to one of the flat surfaces.

[0016] In some embodiments, the first housing portion has a first connecting surface connected between the inner surface and the outer surface of the first housing portion, and the second housing portion has a second connecting surface connected between the inner surface and the outer surface of the first housing portion, wherein the first connecting surface and the second connecting surface are in contact.

[0017] The housing also includes a positioning component, which includes a positioning post and a positioning groove. One of the positioning post and the positioning groove is disposed on the first connecting surface, and the other is disposed on the second connecting surface. The positioning post extends into the positioning groove.

[0018] In some embodiments, the multiple support bars are divided into multiple groups, each group including multiple support bars. When the support structure is in a curled state, the multiple support bars in the same group are stacked sequentially along the radial direction of the cylindrical structure.

[0019] For any two supports in the same group, the width of the support closer to the cylindrical structure is smaller than the width of the support farther from the cylindrical structure.

[0020] In some embodiments, the housing further includes a first cover plate and a second cover plate disposed opposite to each other, the first cover plate and the second cover plate being disposed at both ends of the cylindrical structure and fixedly connected to the cylindrical structure, the first cover plate, the second cover plate and the cylindrical structure forming a receiving cavity, and the control motherboard being located within the receiving cavity.

[0021] In some embodiments, a first limiting protrusion and a second limiting protrusion are provided on the inner surface of the cylindrical structure, and a first limiting groove is provided on the surface of the first cover plate facing the second cover plate, wherein at least a portion of the first limiting protrusion is located in the first limiting groove.

[0022] The second cover plate has a second limiting groove on its surface facing the first cover plate, and at least a portion of the second limiting protrusion is located in the second limiting groove.

[0023] In some embodiments, the first cover plate is provided with a second cutout portion, which exposes an external interface on the control motherboard for connecting an external device.

[0024] In some embodiments, the flexible display device further includes a motherboard mounting plate disposed in the housing, the motherboard mounting plate being connected to the housing, and the control motherboard being fixed to the motherboard mounting plate.

[0025] In some embodiments, the support member includes a main body extending along the first direction and connecting portions located at both ends of the main body, the connecting portions being fixedly connected to the main body;

[0026] Each pair of adjacent support members is connected by a hinge assembly, which includes a first bushing, a second bushing, and a pin. The first bushing and the second bushing are respectively fixed to the connecting portion of the two adjacent support members. The first bushing is provided with a first pin hole, and the second bushing is provided with a second pin hole coaxial with the first pin hole. The pin passes through the first pin hole and the second pin hole and extends along the first direction. The two adjacent support members are used to rotate relative to each other about the axis of the pin.

[0027] In some embodiments, the hinge assembly further includes a limiting structure connected to at least one of the first bushing and the second bushing, for limiting the angle of relative rotation between two adjacent supports.

[0028] In some embodiments, the limiting structure includes: a first protrusion, a first groove, a second protrusion, and a second groove, wherein the first protrusion and the first groove are disposed at one end of the first bushing near the second bushing, and the second protrusion and the second groove are disposed at one end of the second bushing near the first bushing;

[0029] The first groove has a first limiting surface and a second limiting surface, the second groove has a third limiting surface and a fourth limiting surface, at least a portion of the first protrusion is located in the second groove, at least a portion of the second protrusion is located in the first groove, and when two adjacent support members rotate relative to each other, the first protrusion moves between the third limiting surface and the fourth limiting surface, and the second protrusion moves between the first limiting surface and the second limiting surface. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a front perspective view of the flexible display device provided in some embodiments of this disclosure in its unfolded state.

[0032] Figure 2 This is a schematic diagram of the back of the flexible display device provided in some embodiments of this disclosure when it is in the unfolded state.

[0033] Figure 3 This is a perspective view of the flexible display device provided in some embodiments of this disclosure in a rolled-up state.

[0034] Figure 4 Test diagrams of flexible display devices provided in some embodiments of this disclosure.

[0035] Figure 5 This is a cross-sectional view of a flexible display device provided in some embodiments of this disclosure.

[0036] Figure 6 This is a perspective view of the housing provided in some embodiments of this disclosure from one angle.

[0037] Figure 7 This is a perspective view of the housing provided in some embodiments of this disclosure from another angle.

[0038] Figure 8 This is a schematic diagram of a cylindrical structure and a control motherboard provided in some embodiments of this disclosure.

[0039] Figure 9 This is a perspective view of a first housing portion provided in some embodiments of this disclosure.

[0040] Figure 10 A perspective view of the second housing portion provided for some embodiments of this disclosure.

[0041] Figure 11This is a perspective view of a first cover plate provided in some embodiments of this disclosure.

[0042] Figure 12 This is a perspective view of a second cover plate provided in some embodiments of this disclosure.

[0043] Figure 13 This is a perspective view of a motherboard mounting plate provided in some embodiments of this disclosure.

[0044] Figure 14 This is a perspective view of a first support member provided in some embodiments of this disclosure.

[0045] Figure 15 This is a perspective view of a second support member provided in some embodiments of this disclosure.

[0046] Figure 16 for Figure 15 A magnified schematic diagram of the Q region.

[0047] Figure 17 This is a schematic diagram showing the connection between adjacent support components when the support structure is in a flattened state.

[0048] Figure 18 For along Figure 17 A cross-sectional view of line A-A' in the middle.

[0049] Figure 19 For along Figure 17 A cross-sectional view of line B-B' in the middle.

[0050] Figure 20 This is a schematic diagram showing the connection between adjacent support members when the support structure is in a curled state.

[0051] Figure 21 For along Figure 20 A cross-sectional view of line C-C' in the middle.

[0052] Figure 22 For along Figure 20 A cross-sectional view of line D-D' in the middle. Detailed Implementation

[0053] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0055] Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0056] Figure 1 This is a front perspective view of the flexible display device provided in some embodiments of this disclosure in its unfolded state. Figure 2 This is a schematic diagram of the back of the flexible display device provided in some embodiments of this disclosure when it is in the unfolded state. Figure 3 This is a perspective view of the flexible display device provided in some embodiments of this disclosure in a rolled-up state. Figure 4 These are test diagrams of the flexible display device provided in some embodiments of this disclosure. Figure 5 This is a cross-sectional view of a flexible display device provided in some embodiments of this disclosure, such as... Figures 1 to 5 As shown, the flexible display device includes: a flexible display screen 2, a support structure 3, and a magnetic component. The support structure 3 has a support surface and is capable of switching between a rolled-up state and a flattened state, allowing the support surface of the support structure 3 to switch between a curved surface and a flat surface. The unfolded state of the flexible display device is the state of the support structure 3 when unfolded, and the rolled-up state of the flexible display device is the state of the support structure 3 when rolled up.

[0057] The flexible display screen 2 can be a self-emissive display screen such as OLED, MiniLED, or MicroLED. At least a portion of the flexible display screen 2 is fixed to the support surface of the support structure 3. The flexible display screen 2 can include a display part and a driving part connected to the display part. The display part is the part of the flexible display screen 2 used to display images. The display part can be fixed to the support surface of the support structure 3. When the support structure 3 is in a flat state, the flexible display screen 2 unfolds to display images; when the support structure 3 is in a rolled state, the flexible display screen 2 also rolls up.

[0058] The magnetic component includes at least two first magnetic elements 41 disposed on the support structure 3. Optionally, the first magnetic elements 41 can be magnets. The multiple first magnetic elements 41 are used to attract each other when the support structure 3 is in a rolled-up state. Therefore, when the support structure 3 is in a rolled-up state, it can remain stable under the interaction of the multiple first magnetic elements, thereby ensuring the stability of the flexible display device when rolled up.

[0059] like Figure 3 and Figure 4 As shown, the support structure 3 includes multiple support members 3a extending along a first direction. These support members 3a are connected sequentially, and each support member 3a has a sub-support surface. The sub-support surfaces of the multiple support members 3a together form the support surface of the support structure 3. Adjacent support members 3a are hinged to each other, allowing relative rotation between them. This enables the support structure 3 to switch between a flattened state and a rolled-up state. When the flexible display is needed for image display, the support structure 3 is unfolded; when the flexible display is not needed, the support structure 3 can be rolled up to save space occupied by the flexible display and facilitate portability.

[0060] The support member 3a can be made of a material with high density and high hardness, such as metal, so that when the flexible display device is unfolded, the gravity of the support member 3a can keep the flexible display screen in a flat state without it tilting.

[0061] A first mounting groove (not shown) is provided on the surface of the support structure 3 facing away from the support surface, and a first magnetic element 41 is disposed in the first mounting groove. The first mounting groove is disposed on the support member 3a. This disclosure does not specifically limit the shape of the first mounting groove and the first magnetic element 41; for example, the shapes of the first magnetic element 41 and the first mounting groove can be cylindrical, cuboid, etc. The thickness of the first magnetic element 41 can be less than or equal to the depth of the first mounting groove, so that the first magnetic element 41 does not protrude from the support member 3a, thereby improving the aesthetics of the flexible display device. In one example, the thickness of the first magnetic element 41 is approximately equal to the depth of the first mounting groove.

[0062] It should be noted that "approximately equal" in the embodiments of this disclosure means that the difference between the two values ​​does not exceed 5% or 10%. Of course, the two values ​​can also be completely equal.

[0063] In this embodiment of the disclosure, the number of magnetic components can be one or more; when the support structure 3 is in a curled state, multiple first magnetic elements 41 in the same magnetic component are arranged radially along the curled state and attract each other.

[0064] like Figures 1 to 5 As shown, the flexible display device also includes: a housing 1 and a control motherboard 15. The control motherboard 15 is disposed inside the housing 1 and is used to provide drive signals to the flexible display screen 2. A support structure 3 is located outside the housing 1 and connected to the housing 1. When the support structure 3 is in a rolled-up state, it is wound around the housing 1. The flexible display screen 2 includes a display section and a drive section connected to the display section. The display section is fixed to the support surface of the support structure 3, and the drive section passes through a first cutout on the housing 1 and is connected to the control motherboard 15.

[0065] Figure 6 This is a perspective view of the housing provided in some embodiments of this disclosure from one angle. Figure 7 This is a perspective view of the housing provided in some embodiments of this disclosure from another angle, such as... Figure 6 and Figure 7 As shown, a second mounting groove 11v can also be provided on the housing 1. The magnetic component also includes a second magnetic element 42 disposed in the second mounting groove 11v. The second magnetic element 42 and multiple first magnetic elements 41 attract each other when the support structure 3 is in a curled state, thereby further ensuring the stability of the flexible display device in the curled state. Optionally, the second magnetic element 42 is a magnet.

[0066] This disclosure does not specifically limit the shape of the second mounting groove 11v and the second magnetic element. To improve the adsorption force between the first magnetic element 41 and the second magnetic element 42, the shapes of the second magnetic element 42 and the first magnetic element 41 can be set to be the same. The thickness of the second magnetic element 42 can be less than or equal to the depth of the second mounting groove 11v, thereby preventing the second magnetic element 42 from protruding from the housing 1 and improving the aesthetics of the flexible display device. In one example, the thickness of the second magnetic element 42 is approximately equal to the depth of the second mounting groove 11v.

[0067] like Figure 6 and Figure 7As shown, the housing 1 may include: a first housing portion 11, a second housing portion 12, a first cover plate 13, and a second cover plate 14. The first housing portion 11 and the second housing portion 12 are disposed opposite to each other and connected to form a cylindrical structure. The first cover plate 13 and the second cover plate 14 are respectively disposed at both ends of the cylindrical structure and are fixedly connected to the cylindrical structure. The first cover plate 13, the second cover plate 14, and the cylindrical structure form a receiving cavity, and the control main board 15 is located inside the receiving cavity.

[0068] like Figure 6 As shown, the outer surface of the first housing portion 11 has a first edge E1 and a second edge (not shown) disposed opposite to each other, and the outer surface of the second housing portion 12 has a third edge E3 and a fourth edge (not shown) disposed opposite to each other. The first edge E1, the second edge, the third edge E3 and the fourth edge all extend along a first direction. The first edge E1 is adjacent to the third edge E3, and the second edge is adjacent to the fourth edge.

[0069] A step is formed on the outer surface of the first housing portion 11 near the first edge E1 and on the outer surface of the second housing portion 12 near the third edge E3. The first openwork portion V1 of the housing 1 is located between the first edge E1 and the third edge E3, i.e., on the step surface. The plurality of support members 3a include: a first support member 31 and a plurality of second support members 32 connected in sequence. The first support member 31 is fixed to the outer surface of the second housing portion 12 near the third edge E3. For example... Figure 6 As shown, a fixing hole 12v is provided on the second housing part 12 near the third edge E3, so that screws and other fasteners can be passed through the first support member 31 and fixed in the fixing hole 12v, thereby fixing the first support member 31 to the second housing part 12.

[0070] Since a step difference is formed between the first edge of the first housing part 11 and the third edge E3 of the second housing part 12, and the first support member 31 is located near the third edge E3 of the second housing part 12, the multiple support members 3a are wrapped around the cylindrical structure, and the first support member 31 will not squeeze the flexible display screen 2 on its outer side, thus preventing damage to the flexible display screen 2.

[0071] Furthermore, considering that if the outer surface of the cylindrical structure is a smooth circular surface, when multiple supports 3a are wound around the cylindrical structure, the sub-support surfaces of the supports 3a will be tangent to the circular surface, resulting in multiple stress concentration points on the flexible display screen 2. To prevent this phenomenon, in the embodiments of this disclosure, such as... Figure 6 and Figure 7 As shown, the outer surface of the cylindrical structure includes multiple flat surfaces S1. When the support structure 3 is in a curled state, the surface of each support member 3a facing the cylindrical structure is approximately parallel to a flat surface S1, thereby reducing or preventing stress concentration problems on the flexible display screen 2.

[0072] It should be noted that the outer surface of the cylindrical structure refers to the surface of the cylindrical structure that is furthest from the containing space. Additionally, "approximately parallel surfaces" means that the angle between the two surfaces is less than a certain range, for example, less than 5° or less than 10°. Of course, the two surfaces can also be completely parallel.

[0073] like Figure 5 As shown, multiple support members 3a of the support structure 3 are wound around the cylindrical structure in an Archimedean spiral pattern. The support members 3a in the support structure 3 are divided into multiple groups, each group comprising multiple support members 3a. When the support structure 3 is in a coiled state, the multiple support members 3a in the same group are stacked sequentially along the radial direction of the cylindrical structure. For any two support members 3a in the same group, the width of the support member 3a closer to the cylindrical structure is smaller than the width of the support member 3a farther from the cylindrical structure. That is, within the same group, the support member 3a farther from the cylindrical structure has a larger width.

[0074] In this configuration, multiple first magnetic elements 41 within the same magnetic assembly are mounted on the same set of support members 3a. When the support structure 3 is in a curled state, such as Figure 5 As shown, multiple first magnetic elements 41 and second magnetic elements 42 on the housing 1 are arranged radially along the cylindrical structure.

[0075] Figure 8 This is a schematic diagram of a cylindrical structure and a control motherboard provided in some embodiments of this disclosure. Figure 9 This is a perspective view of the first housing portion provided in some embodiments of this disclosure. Figure 10 A perspective view of the second housing portion provided for some embodiments of this disclosure. Figure 11 This is a perspective view of a first cover plate provided in some embodiments of the present disclosure. Figure 12 This is a perspective view of a second cover plate provided in some embodiments of this disclosure.

[0076] In the embodiments of this disclosure, the first housing portion 11 and the second housing portion 12 can be detachably connected, and the first cover plate 13 and the second cover plate 14 can be detachably connected, thereby facilitating the assembly of the flexible display device.

[0077] The first cover plate 13, the first housing portion 11, and the second housing portion 12 can be detachably connected using fasteners such as screws. For example, Figures 9 to 10As shown, the first housing portion 11 has a first mounting member 112 at both ends along the first direction, and the first mounting member 112 has a first mounting hole 112v. The second housing portion 12 has a second mounting member 122 at both ends along the first direction, and the second mounting member 122 has a second mounting hole 122v. The first cover plate 13 has a third mounting hole 132, and the second cover plate 14 has a fourth mounting hole 142. Optionally, the first mounting hole 112v, the second mounting hole 122v, the third mounting hole 132, and the fourth mounting hole 142 are all threaded holes. The third mounting hole 132 is coaxial with the first mounting hole 112v at one end of the first housing part 11 and the second mounting hole 122v at one end of the second housing part 12. The fourth mounting hole 142 is coaxial with the first mounting hole 112v at the other end of the first housing part 11 and the second mounting hole 122v at the other end of the second housing part 12. The first screw can be screwed into the third mounting hole 132 and the corresponding first mounting hole 112v and second mounting hole 122v, and the second screw can be screwed into the fourth mounting hole 142 and the corresponding first mounting hole 112v and second mounting hole 122v, thereby fixing the first cover plate 13, the second cover plate 14, the first housing part 11, and the second housing part 12 together.

[0078] like Figure 9 and Figure 10 As shown, the first housing portion 11 has an inner surface 11b facing the receiving cavity, an outer surface 11a facing away from the receiving cavity, and a first connecting surface 11c connecting the inner surface 11b and the outer surface 11a; the second housing portion 12 has an inner surface 12b facing the receiving cavity, an outer surface 12a facing away from the receiving cavity, and a second connecting surface 12c connecting the inner surface 12b and the outer surface 12a, and when the first housing portion 11 and the second housing portion 12 are connected to form a cylindrical structure, the first connecting surface 11c and the second connecting surface 12c are in contact. Figure 8 and Figure 9 As shown, the housing 1 also includes a positioning assembly, which includes positioning posts 114 and positioning grooves 113. One of the positioning posts 114 and the positioning grooves 113 is disposed on the first connecting surface 11c, and the other is disposed on the second connecting surface 12c. The positioning posts 114 extend into the positioning grooves 113. For example, on one of the first connecting surfaces 11c of the first housing portion 11, a plurality of positioning posts 114 and a plurality of positioning grooves 113 are provided, and on the other first connecting surface 11c, a plurality of positioning grooves 113 are provided; on the two second connecting surfaces 12c of the second housing portion 12, positioning grooves 113 that match the positioning posts 114 on the first connecting surface 11c, and positioning posts 114 that match the positioning grooves 113 on the first connecting surface 11c are provided. The positioning assembly facilitates the assembly of the first housing portion 11 and the second housing portion 12, preventing misalignment or inversion during assembly.

[0079] like Figure 9 and Figure 10 As shown, a first limiting protrusion 117 and a second limiting protrusion 118 are provided on the inner surface of the cylindrical structure. For example, multiple first limiting protrusions 117 are provided at one end of the first housing portion 11 near the first cover plate 13 and at one end of the second housing portion 12 near the first cover plate 13, and multiple second limiting protrusions 118 are provided at one end of the first housing portion 11 near the second cover plate 14 and at one end of the second housing portion 12 near the second cover plate 14. Figure 11 and Figure 12 As shown, a first limiting groove 131 is provided on the surface of the first cover plate 13 facing the second cover plate 14, and at least a portion of the first limiting protrusion 117 is located in the first limiting groove 131; a second limiting groove 141 is provided on the surface of the second cover plate 14 facing the first cover plate 13, and at least a portion of the second limiting protrusion 118 is located in the second limiting groove 141. Through the provision of the first limiting protrusion 117, the second limiting protrusion 118, the first limiting groove 131, and the second limiting groove 141, the first cover plate 13 and the second cover plate 14 can be limited, thereby facilitating the assembly of the first cover plate 13 and the second cover plate 14 with the cylindrical structure.

[0080] like Figure 11 As shown, the first cover plate 13 is provided with a second cutout portion 133, which exposes the external interface 151 on the control motherboard 15. The external interface 151 is used to connect external devices. For example, the external interface 151 can be a type-C interface.

[0081] like Figure 8 As shown, a motherboard mounting plate 16 is also provided inside the casing 1. The motherboard mounting plate 16 is fixedly connected to the casing 1, and the control motherboard 15 is fixed on the motherboard mounting plate 16. Figure 13 This is a perspective view of the motherboard mounting plate provided in some embodiments of this disclosure, such as... Figure 13 As shown, the motherboard mounting plate 16 includes a carrier plate 161 and a mounting plate 162 that are fixedly connected. The control motherboard 15 is fixed on the carrier plate 161, and the mounting plate 162 is fixedly connected to the housing 1.

[0082] For example, such as Figure 13 As shown, a mounting post 1611 is provided on the support plate 161, and a screw hole 1612 is provided in the mounting post 1611. The screws on the control main board 15 are connected to the screw hole 1612, thereby fixing the control main board 15 to the support plate 161. A fifth mounting hole 162a is provided on the mounting plate 162, as shown. Figure 9As shown, a fastener 116 is also provided on the inner surface of the first housing part 11. The fastener is provided with a sixth mounting hole 116a. By using fasteners such as screws to pass through the fifth mounting hole 162a and the sixth mounting hole 116a, the motherboard mounting plate 16 is fixedly connected to the first housing part 11.

[0083] Figure 14 This is a perspective view of the first support member provided in some embodiments of this disclosure. Figure 15 This is a perspective view of the second support member provided in some embodiments of this disclosure. Figure 16 for Figure 15 Enlarged diagram of the mid-Q region, Figure 17 This is a schematic diagram showing the connection between adjacent support components when the support structure is in a flattened state. Figure 18 For along Figure 17 A sectional view of line A-A' in the middle. Figure 19 For along Figure 17 A sectional view of line B-B' in the middle. Figure 20 This is a schematic diagram showing the connection between adjacent support members when the support structure is in a curled state. Figure 21 For along Figure 20 A sectional view of line C-C' in the middle. Figure 22 For along Figure 20 A cross-sectional view along line D-D'. (See example) Figure 14 and Figure 15 As shown, each support member 3a includes a main body 31a and connecting portions 31b located at both ends of the main body 31a, with the connecting portions 31b fixedly connected to the main body 31a. The main body 31a extends along a first direction, and its two ends are the two ends arranged along the first direction. The sub-support surface of the support member 3a is the surface of the main body 31a facing the cylindrical structure. For the first support member 31, a fixing portion 31c is also provided on the side of the connecting portion 31b away from the main body 31a. The fixing portion 31c has a screw hole, through which a screw is fixed in a fixing hole 12v on the second housing portion 12, thereby fixing the first support member 31 to the second housing portion 12.

[0084] like Figure 3 As shown, each pair of adjacent support members 3a is connected by a hinge assembly 35. Specifically, two adjacent support members 3a can be connected by two hinge assemblies 35, each located at one end of a support member 3a. Figure 17As shown, the hinge assembly includes a first bushing 33a, a second bushing 33b, and a pin 33c. The first bushing 33a and the second bushing 33b are respectively fixed on the connecting portion 31b of two adjacent support members 3a. The first bushing 33a is provided with a first pin hole, and the second bushing 33b is provided with a second pin hole coaxial with the first pin hole. The pin 33c passes through the first pin hole and the second pin hole and extends along a first direction. The two adjacent support members 3a are used to rotate relative to each other around the axis of the pin 33c.

[0085] In some embodiments, the first bushing 33a and the second bushing 33b may be formed as an integral structure with the connecting portion 31b to which they are connected.

[0086] In some embodiments, the hinge assembly further includes a limiting structure connected to at least one of the first bushing 33a and the second bushing 33b, for limiting the relative rotation angle of two adjacent support members 3a, thereby preventing the flexible display screen 2 from over-folding.

[0087] Among them, combined Figures 15 to 22 As shown, the hinge assembly may specifically include: a first protrusion 33d, a first groove 33e, a second protrusion 33f, and a second groove 33g. The first protrusion 33d and the first groove 33e are disposed at one end of the first bushing 33a near the second bushing 33b, and the second protrusion 33f and the second groove 33g are disposed at one end of the second bushing 33b near the first bushing 33a.

[0088] The first groove 33e has a first limiting surface 33e1 and a second limiting surface 33e2, and the second groove 33g has a third limiting surface and a fourth limiting surface (not shown). At least a portion of the first protrusion 33d is located in the second groove 33g, and at least a portion of the second protrusion 33f is located in the first groove 33e. When two adjacent support members 3a rotate relative to each other, the first protrusion 33d moves between the third and fourth limiting surfaces, and the second protrusion 33f moves between the first limiting surface 33e1 and the second limiting surface 33e2, thereby constraining the relative rotation angle of the support members 3a. The sizes of the first protrusion 33d, the second protrusion 33f, the first groove 33e, and the second groove 33g can be set according to the required rotation angle. In one example, when the support structure 3 is in a curled state, the angle between the sub-support surfaces of two adjacent support members 3a is greater than or equal to 150°.

[0089] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A flexible display device, comprising: a support structure capable of switching between a rolled state and an unfolded state, so that a support surface of the support structure switches between a curved surface and a flat surface; a flexible display screen, at least a part of which is fixed on the support surface of the support structure; a magnetic assembly comprising a plurality of first magnetic pieces arranged on the support structure, the plurality of first magnetic pieces being used to attract each other when the support structure is in the rolled state; the support structure comprises a plurality of support pieces extending along a first direction, the support pieces having sub-support surfaces, the sub-support surfaces of the plurality of support pieces collectively forming the support surface, and adjacent two of the support pieces are hingedly connected to each other; the support piece comprises a main body portion extending along the first direction, and connecting portions located at two ends of the main body portion, the connecting portions being fixedly connected to the main body portion; each adjacent two of the support pieces are connected through a hinged assembly, the hinged assembly comprising a first shaft sleeve, a second shaft sleeve and a pin shaft, the first shaft sleeve and the second shaft sleeve being fixed on the connecting portions of the adjacent two support pieces respectively, the first shaft sleeve being provided with a first pin hole, the second shaft sleeve being provided with a second pin hole coaxial with the first pin hole, the pin shaft extending through the first pin hole and the second pin hole and along the first direction, and the adjacent two support pieces being used to relatively rotate around an axis of the pin shaft; the hinged assembly further comprises a limiting structure connected to at least one of the first shaft sleeve and the second shaft sleeve, and used to limit an angle of relative rotation of the adjacent two support pieces; the limiting structure comprises a first protrusion, a first groove, a second protrusion and a second groove, the first protrusion and the first groove being arranged at one end of the first shaft sleeve close to the second shaft sleeve, and the second protrusion and the second groove being arranged at one end of the second shaft sleeve close to the first shaft sleeve; the first groove has a first limiting surface and a second limiting surface, the second groove has a third limiting surface and a fourth limiting surface, at least a part of the first protrusion is located in the second groove, at least a part of the second protrusion is located in the first groove, and when the adjacent two support pieces relatively rotate, the first protrusion moves between the third limiting surface and the fourth limiting surface, and the second protrusion moves between the first limiting surface and the second limiting surface. 2.The flexible display apparatus of claim 1, wherein, a first mounting groove is arranged on a surface of the support structure away from the support surface, and the first magnetic piece is arranged in the first mounting groove. 3.The flexible display apparatus of claim 1, wherein, the flexible display device further comprises a casing and a control mainboard, the control mainboard being arranged in the casing, the support structure being connected to the casing, and the support structure being wound on the casing when the support structure is in the rolled state; the flexible display screen comprises a display portion and a driving portion connected to the display portion, the display portion being fixed on the support surface of the support structure, and the driving portion being connected to the control mainboard through a first hollow portion on the casing. 4.The flexible display apparatus of claim 3, wherein, The second mounting groove is arranged on the shell, and the magnetic assembly further comprises a second magnetic piece arranged in the second mounting groove, and the second magnetic piece is attracted to the plurality of first magnetic pieces when the support structure is in the curled state. 5.The flexible display apparatus of claim 3, wherein, The shell comprises a first shell part and a second shell part arranged oppositely and connected to form a cylindrical structure; an outer surface of the first shell part has a first edge and a second edge arranged oppositely, and an outer surface of the second shell part has a third edge and a fourth edge arranged oppositely, the first edge, the second edge, the third edge and the fourth edge all extend along the first direction, the first edge is adjacent to the third edge, and the second edge is adjacent to the fourth edge. An outer surface of the first shell part has a step formed at a position close to the first edge and an outer surface of the second shell part has a step formed at a position close to the third edge; the plurality of support pieces comprises a first support piece and a plurality of second support pieces connected sequentially, and the first support piece is fixed at the position close to the third edge of the outer surface of the second shell part. 6.The flexible display apparatus of claim 5, wherein, An outer surface of the cylindrical structure comprises a plurality of flat surfaces, and when the support structure is in the curled state, each support piece is substantially parallel to one flat surface of the cylindrical structure. 7.The flexible display apparatus of claim 5, wherein, The first shell part has a first connecting surface connected between an inner surface and an outer surface of the first shell part, and the second shell part has a second connecting surface connected between an inner surface and an outer surface of the second shell part, and the first connecting surface and the second connecting surface are in contact. The shell further comprises a positioning assembly, the positioning assembly comprises a positioning column and a positioning groove, one of the positioning column and the positioning groove is arranged on the first connecting surface, and the other is arranged on the second connecting surface, and the positioning column extends into the positioning groove. 8.The flexible display apparatus of claim 5, wherein, The plurality of support strips are divided into a plurality of groups, each group comprises a plurality of support strips, and when the support structure is in the curled state, the plurality of support strips in the same group are stacked sequentially along the radial direction of the cylindrical structure. For any two support pieces in the same group, the width of the support piece close to the cylindrical structure is smaller than the width of the support piece away from the cylindrical structure. 9.The flexible display apparatus of claim 5, wherein, The shell further comprises a first cover plate and a second cover plate arranged oppositely, the first cover plate and the second cover plate are arranged at two ends of the cylindrical structure respectively and are fixedly connected with the cylindrical structure, the first cover plate, the second cover plate and the cylindrical structure enclose a containing cavity, and the control mainboard is located in the containing cavity. 10.The flexible display apparatus of claim 9, wherein, An inner surface of the cylindrical structure is provided with a first limiting protrusion and a second limiting protrusion, a surface of the first cover plate facing the second cover plate is provided with a first limiting groove, and at least part of the first limiting protrusion is located in the first limiting groove. A surface of the second cover plate facing the first cover plate is provided with a second limiting groove, and at least part of the second limiting protrusion is located in the second limiting groove. 11.The flexible display apparatus of claim 9, wherein, The first cover plate is provided with a second hollow part, and the second hollow part exposes an external interface on the control main plate, and the external interface is used for connecting an external device.

12. The flexible display device according to any one of claims 3 to 11, wherein, The flexible display device further comprises a main plate mounting plate arranged in the casing, the main plate mounting plate is connected with the casing, and the control main plate is fixed on the main plate mounting plate.

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