A foldable device

Abstract

This application provides a foldable device. A first housing and a second housing are connected by a pivot mechanism, enabling the opening and closing movements of the first and second housings. A flexible display module can follow the movement of the first and second housings. The first magnetic layer of the main shaft and the second magnetic layer of the bendable portion have the same polarity, generating a repulsive force between the main shaft and the bendable portion. This repulsive force is used to assist in shaping the flexible display module. During the transition from a flattened state to a closed state, the aforementioned repulsive force drives the arc-shaped portion of the bendable portion to rise upwards, forming a gap or slight contact between the arc-shaped portion and the main shaft. The bendable portion bends to form a continuous and uniformly transitioning creep shape, reducing the accumulation of material compression and stretching during the bending process. During the transition from a closed state to a flattened state, the aforementioned repulsive force drives the creep of the bendable portion to quickly return to a flat state, reducing light and shadow and creases in the bendable portion when transitioning from a closed state to a flattened state.

Description

[0001] This application claims priority to Chinese Patent Application No. 202510372392.2, filed with the State Intellectual Property Office of China on March 26, 2025, entitled "A Foldable Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of folding device technology, and more particularly to a foldable device. Background Technology

[0003] Foldable devices (such as foldable phones) have flattened and closed states. In the flattened state, the flexible display module can achieve a large-area display, while in the closed state, the flexible display module bends and the overall structure is compact. In related technologies, the bendable portion of the flexible display module in foldable devices is prone to creep along its length during long-term bending. When switching from the closed to the flattened state, obvious light and shadow effects and creases appear on the bendable portion of the flexible display module. Summary of the Invention

[0004] This application provides a foldable device that solves the problem of obvious light and shadow and creases in the bendable part of the flexible display module when the foldable device switches from a closed state to a flattened state.

[0005] The embodiments of this application adopt the following technical solutions: In a first aspect, embodiments of this application provide a foldable device, including a hinge mechanism, a first housing, a second housing, and a flexible display module. The hinge mechanism includes a main shaft, a first fixing frame, a second fixing frame, a first support member, and a second support member. The first and second fixing frames are respectively disposed on both sides of the main shaft along its width direction, and the first and second support members are also respectively disposed on both sides of the main shaft along its width direction. The first and second fixing frames are rotatable relative to the main shaft, allowing the hinge mechanism to switch between a flattened state and a closed state. The hinge mechanism is located between the first and second housings, with the first fixing frame fixed to the first housing and the second fixing frame fixed to the second housing. The flexible display module has a first fixing part, a bendable part, and a second fixing part connected sequentially. The first fixing part is fixed to the first housing, and the second fixing part is fixed to the second housing. The bendable part and the hinge mechanism are disposed opposite to each other. The main shaft is provided with a first magnetic layer, and the bendable part is provided with a second magnetic layer. The first and second magnetic layers are disposed opposite to each other and have the same polarity. When the rotating shaft mechanism is in the closed state, a screen space is formed between the first support member, the main shaft, and the second support member. The bendable portion is arc-shaped and located within the screen space, with the bendable portion and the main shaft spaced apart or abutting each other. When the rotating shaft mechanism is in the flattened state, the bendable portion is flat, and the first support member, the main shaft, and the second support member are flush to support the bendable portion.

[0006] The foldable device provided in this application embodiment connects the first and second housings via a pivot mechanism, enabling the opening and closing movements of the first and second housings. The flexible display module can follow the movement of the first and second housings. The first magnetic layer of the main shaft and the second magnetic layer of the bendable portion have the same polarity, generating a repulsive force between the main shaft and the bendable portion. This repulsive force assists in shaping the flexible display module. During the transition from a flattened state to a closed state, the aforementioned repulsive force drives the arc-shaped portion of the bendable portion to rise upwards, forming a gap or slight contact between the arc-shaped portion and the main shaft. The bendable portion bends to form a continuous and uniformly transitioning creep shape, reducing material compression and stretching accumulation during the bending process. During the transition from a closed state to a flattened state, the aforementioned repulsive force drives the creep of the bendable portion to quickly return to a flat state, reducing light and shadow and creases on the bendable portion when transitioning from a closed to a flattened state.

[0007] In one alternative implementation, the main shaft in the rotating mechanism can be generally configured as a flat strip. The main shaft may include an inner main shaft and an outer main shaft stacked together, and the inner main shaft and the outer main shaft can be connected by fasteners, snap-fits, or other means.

[0008] In one alternative implementation, the first and second fixing frames in the rotating shaft mechanism can be configured as strips or other shapes. The first fixing frame and the first housing, and the second fixing frame and the second housing, can be connected by means of adhesive bonding, snap-fit, fasteners, etc.

[0009] In one alternative implementation, the first and second supports in the pivot mechanism can be approximately plate-shaped, resulting in a compact structure and small footprint. When the pivot mechanism is in a flattened state, the first and second supports can form a large, flat support surface.

[0010] In one alternative implementation, the flexible display module is composed of multiple layers of locally stretchable and compressible materials stacked in the thickness direction. For example, the flexible display module includes a flexible display panel and a flexible support layer stacked in phase.

[0011] In one alternative implementation, the projection of the second magnetic layer can cover the projection of the first magnetic layer in the thickness direction of the spindle. During the switching between the closed and flattened states of the rotating shaft mechanism, the first and second magnetic layers remain facing each other to form a certain magnetic repulsion, resulting in a gap or slight contact between the bendable part and the spindle. In the closed state, the bendable part bends to form a continuous and uniformly transitioning creep shape, and in the flattened state, the creep of the bendable part can quickly return to a flat state.

[0012] In one alternative implementation, when the pivot mechanism is in a flattened state, the width of the second magnetic layer along the width direction of the main shaft can be greater than or equal to the width of the main shaft, and the width of the first magnetic layer can be less than or equal to the width of the main shaft. When the pivot mechanism is in a flattened, closed, or intermediate state, a large repulsive force can be generated between the second and first magnetic layers. This repulsive force supports the bendable portion, thus assisting in the shaping of the flexible display module. Placing the first magnetic layer on the main shaft does not affect the placement of the first and second support members on the main shaft.

[0013] In one alternative implementation, the spindle has a groove on the side facing the bendable portion. When the shaft mechanism is in the closed state, the bendable portion is at least partially located within the groove, forming a gap or slight contact between the bottom of the arc-shaped portion of the bendable portion and the spindle, reducing the contact force between the bendable portion and the spindle, allowing the bendable portion to bend into a continuous and smooth shape.

[0014] In one alternative implementation, a first magnetic layer is disposed on the surface of the groove facing the second magnetic layer. This facilitates the arrangement of the first magnetic layer on the spindle, and a magnetic repulsion is formed between the first and second magnetic layers, creating a gap or slight contact between the bendable portion and the spindle.

[0015] In one alternative implementation, the cross-section of the groove surface on the vertical plane along the length of the spindle is arc-shaped. In the closed state, the bendable portion is located within the groove. This allows for more space to be reserved inside the spindle for accommodating other parts.

[0016] In one alternative implementation, the first magnetic layer is laid flat on the side of the spindle facing the bendable portion. This facilitates the arrangement of the first magnetic layer on the spindle, allowing for minimal or no contact between the first magnetic layer and the flexible display module.

[0017] In one alternative implementation, a mounting groove is provided on the side of the spindle facing the bendable part, and the first magnetic layer is embedded in the mounting groove to facilitate the positioning and assembly of the first magnetic layer.

[0018] In one alternative implementation, the side of the spindle facing the bendable portion is a plane, and the first magnetic layer is directly mounted on the side of the spindle facing the bendable portion.

[0019] In one alternative implementation, the second magnetic layer is disposed on the side of the bendable portion facing the main axis. The first and second magnetic layers are arranged close together to generate a large repulsive force between them. The second magnetic layer does not affect the frontal display effect of the bendable portion.

[0020] In one alternative implementation, the first magnetic layer includes a first substrate layer and first magnetic powder, with the first magnetic powder disposed on the first substrate layer, which is mounted on the spindle. This design facilitates easy forming and assembly. The first magnetic powder can be deposited on the first substrate layer using methods such as vacuum evaporation, electrodeposition, sputtering, or chemical plating. The first magnetic layer can be single-layered or multi-layered. Multi-layered first magnetic layers can be stacked. The first substrate layer can be attached to the spindle using methods such as adhesive bonding or welding.

[0021] In one alternative implementation, the first magnetic layer includes a first magnetic powder layer attached to the spindle. This is easy to form. The magnetic powder can be attached to the spindle by spraying, printing, or other methods. A protective film can be applied to the outside of the first magnetic powder layer to protect it.

[0022] In one alternative implementation, the second magnetic layer includes a second substrate layer and a second magnetic powder. The second magnetic powder is disposed on the second substrate layer, and the second substrate layer is mounted on the bendable portion. This facilitates molding and assembly. The second magnetic powder can be deposited on the second substrate layer using methods such as vacuum evaporation, electrodeposition, sputtering, or chemical plating. The second magnetic layer can be single-layered or multi-layered. Multi-layered second magnetic layers can be stacked. The second substrate layer can be attached to the bendable portion using methods such as adhesive bonding or welding.

[0023] In one alternative implementation, the second magnetic layer includes a second magnetic powder layer attached to the bendable portion. This is easy to form. The magnetic powder can be attached to the bendable portion using spraying, printing, or other methods. A protective film can be provided outside the second magnetic powder layer to protect it.

[0024] In one alternative implementation, the flexible display module includes a flexible display panel and a flexible support layer stacked on top of each other. The flexible support layer is closer to the first magnetic layer than the flexible display panel. The flexible support layer has multiple openings corresponding to the main axis, and the second magnetic layer includes magnetic powder portions disposed within the openings. This design makes full use of space and is easy to form. Magnetic powder can be attached to the openings of the flexible support layer using spraying, printing, or other methods. A protective film can be provided on the areas of the flexible support layer containing the magnetic powder portions to protect them.

[0025] In one alternative implementation, the bendable portion includes a first transition zone, a bending zone, and a second transition zone connected sequentially. The first fixing portion and the bending zone are connected via the first transition zone, and the second fixing portion and the bending zone are connected via the second transition zone. The bending zone and the main shaft are positioned opposite each other, the first transition zone and the first support member are positioned opposite each other, and the second transition zone and the second support member are positioned opposite each other.

[0026] In one alternative implementation, the first transition zone and the first support member are bonded together with an adhesive, and the second transition zone and the second support member are bonded together with an adhesive. This reduces bulging in the first and second transition zones in the closed state, reduces extrusion deformation of the bendable portion, and improves the reliability of the flexible display module.

[0027] In one alternative implementation, the first transition zone and the first support member are arranged facing each other without adhesive bonding. The second transition zone and the second support member are also arranged facing each other without adhesive bonding. During the switching between the closed and flattened states, the first and second transition zones can deform freely.

[0028] In one alternative implementation, the main shaft has a first magnetic layer, and the bendable portion has a second magnetic layer. The first and second magnetic layers are arranged opposite each other and have the same polarity. Both the first and second supports have a third magnetic layer, and both the first and second transition regions have a fourth magnetic layer. The third magnetic layer of the first support and the fourth magnetic layer of the first transition region are arranged opposite each other and have opposite polarities to generate an attractive force between the first support and the first transition region. Similarly, the third magnetic layer of the second support and the fourth magnetic layer of the second transition region are arranged opposite each other and have opposite polarities to generate an attractive force between the second support and the second transition region.

[0029] During the transition from the flattened state to the closed state, suction drives the bending area to expand and shape to both sides. Combined with the inherent rigidity of the bendable area, this facilitates the formation of a continuous arc shape near the main axis, increasing the free angle of the flexible display module in the closed state. This creates a gap or slight contact between the bending area and the main axis, reducing the contact force and allowing the bendable portion to bend into a continuous and smooth shape. During the transition from the closed state to the flattened state, suction reduces the risk of arching in the first and second transition areas, improving the reliability of the flexible display module.

[0030] In one alternative implementation, the third magnetic layer is magnetic powder disposed on the substrate layer, or the magnetic powder is directly attached to the support.

[0031] In one alternative implementation, the fourth magnetic layer is magnetic powder disposed on the substrate layer, or the magnetic powder is directly attached to the transition region.

[0032] In one alternative implementation, the main shaft has a first magnetic layer, and the bendable portion has a second magnetic layer. The first and second magnetic layers are arranged opposite each other and have the same polarity. The first support member has a third magnetic layer, and the first transition region has a fourth magnetic layer. The third magnetic layer of the first support member and the fourth magnetic layer of the first transition region are arranged opposite each other and have opposite polarities to generate an attractive force between the first support member and the first transition region.

[0033] In other embodiments, the main shaft has a first magnetic layer, and the bendable portion has a second magnetic layer. The first and second magnetic layers are disposed opposite to each other and have the same polarity. The second support member has a third magnetic layer, and the second transition region has a fourth magnetic layer. The third magnetic layer of the second support member and the fourth magnetic layer of the second transition region are disposed opposite to each other and have opposite polarities to generate an attractive force between the second support member and the second transition region.

[0034] In some embodiments, along the width direction of the main shaft, a first connecting rod and a first swing arm are provided on one side of the main shaft, and a second connecting rod and a second swing arm are provided on the other side of the main shaft. A first support member, a first fixed frame, a first connecting rod, and a first swing arm are correspondingly arranged on the same side of the main shaft. One end of the first connecting rod is rotatably connected to the main shaft, and the other end of the first connecting rod is slidably mounted on the first fixed frame. One end of the first swing arm is rotatably connected to the main shaft, and the other end of the first swing arm is rotatably connected to the first fixed frame. The first connecting rod and the first swing arm are parallel to and do not coincide with the axis of rotation of the main shaft. One end of the first support member can be rotatably connected to the first fixed frame. The first fixed frame is fixed to the first housing. When the first housing rotates relative to the main shaft, the first fixed frame will drive the first connecting rod and the first swing arm to rotate relative to the main shaft, and drive the first support member to move.

[0035] A second support member, a second fixed frame, a second connecting rod, and a second swing arm are correspondingly arranged on the same side of the main shaft. One end of the second connecting rod is rotatably connected to the main shaft, and the other end is slidably mounted on the second fixed frame. One end of the second swing arm is rotatably connected to the main shaft, and the other end is rotatably connected to the second fixed frame. The second connecting rod and the second swing arm are parallel to but do not coincide with the axis of rotation of the main shaft. One end of the second support member is rotatably connected to the second fixed frame. The second fixed frame is fixed to the second housing. When the second housing rotates relative to the main shaft, the second fixed frame will drive the second connecting rod and the second swing arm to rotate relative to the main shaft, and thus drive the second support member to move.

[0036] In one alternative implementation, the foldable device may include a pivot mechanism and a first housing and a second housing respectively connected to both sides of the pivot mechanism, the first housing and the second housing being folded and unfolded via the pivot mechanism.

[0037] In one alternative implementation, the foldable device may include two or more first housings, with a second housing disposed between each pair of adjacent first housings, and a pivot mechanism connecting the adjacent first and second housings, so that the foldable device forms a stacked structure of three or more layers when folded.

[0038] Secondly, embodiments of this application provide a foldable device, including: a hinge mechanism, a first housing, a second housing, and a flexible display module. The hinge mechanism includes a main shaft, a first fixing frame, a second fixing frame, a first support member, and a second support member. The first fixing frame and the second fixing frame are respectively disposed on both sides of the main shaft along the width direction, and the first support member and the second support member are respectively disposed on both sides of the main shaft along the width direction. The first fixing frame and the second fixing frame can rotate relative to the main shaft, so that the hinge mechanism can switch between a flattened state and a closed state. The hinge mechanism is located between the first housing and the second housing, the first fixing frame is fixed to the first housing, and the second fixing frame is fixed to the second housing. The flexible display module has a first fixing part, a bendable part, and a second fixing part connected in sequence. The first fixing part is fixed to the first housing, the second fixing part is fixed to the second housing, and the bendable part and the hinge mechanism are disposed opposite to each other.

[0039] The bendable portion includes a first transition zone, a bending zone, and a second transition zone connected in sequence. The first fixing portion and the bending zone are connected via the first transition zone, and the second fixing portion and the bending zone are connected via the second transition zone. The bending zone and the main shaft are arranged opposite each other, the first transition zone and the first support member are arranged opposite each other, and the second transition zone and the second support member are arranged opposite each other.

[0040] Both the first and second supports are provided with a third magnetic layer, and both the first and second transition regions are provided with a fourth magnetic layer. The third magnetic layer of the first support and the fourth magnetic layer of the first transition region are arranged opposite to each other and have opposite polarities to generate an attractive force between the first support and the first transition region. The third magnetic layer of the second support and the fourth magnetic layer of the second transition region are arranged opposite to each other and have opposite polarities to generate an attractive force between the second support and the second transition region. The main shaft may not have a first magnetic layer, and the bendable portion may not have a second magnetic layer.

[0041] When the rotating shaft mechanism is in the closed state, a screen-containing space is formed between the first support member, the main shaft, and the second support member, and the bendable portion is arc-shaped and located within the screen-containing space. When the rotating shaft mechanism is in the flattened state, the bendable portion is flat, and the first support member, the main shaft, and the second support member are flush to support the bendable portion.

[0042] During the transition from the flattened state to the closed state, suction drives the bending area to expand and shape to both sides. Combined with the inherent rigidity of the bendable area, this facilitates the formation of a continuous arc shape near the main axis, increasing the free angle of the flexible display module in the closed state. This creates a gap or slight contact between the bending area and the main axis, reducing the contact force and allowing the bendable portion to bend into a continuous and smooth shape. During the transition from the closed state to the flattened state, suction reduces the risk of arching in the first and second transition areas, improving the reliability of the flexible display module.

[0043] In one alternative implementation, a third magnetic layer and a fourth magnetic layer are provided on one side of the main shaft along its width direction. For example, the first support member has a third magnetic layer and the first transition region has a fourth magnetic layer; or, the second support member has a third magnetic layer and the second transition region has a fourth magnetic layer.

[0044] Thirdly, embodiments of this application provide a foldable device, including: a pivot mechanism, a first housing, a second housing, and a flexible display module. The pivot mechanism includes a main shaft, a first fixing frame, a second fixing frame, a first support member, and a second support member; the first fixing frame and the second fixing frame are respectively disposed on both sides of the main shaft along the width direction, and the first support member and the second support member are respectively disposed on both sides of the main shaft along the width direction; the first fixing frame and the second fixing frame can rotate relative to the main shaft, so that the pivot mechanism can switch between a flattened state and a closed state. The pivot mechanism is located between the first housing and the second housing, the first fixing frame is fixed to the first housing, and the second fixing frame is fixed to the second housing. The flexible display module has a first fixing part, a bendable part, and a second fixing part connected in sequence. The bendable part includes a first transition area, a bending area, and a second transition area connected in sequence. The first fixing part and the bending area are connected through the first transition area, and the second fixing part and the bending area are connected through the second transition area. The first fixing part is fixed to the first housing, the second fixing part is fixed to the second housing, and the bendable part and the pivot mechanism are disposed opposite to each other. Both the first and second supports are provided with a first flexible adsorption layer, and both the first and second transition regions are provided with a second flexible adsorption layer. The first flexible adsorption layer of the first support and the second flexible adsorption layer of the first transition region are arranged opposite to each other and adsorbed, and can generate relative displacement under impact or tensile force. The first flexible adsorption layer of the second support and the second flexible adsorption layer of the second transition region are arranged opposite to each other and adsorbed, and can generate relative displacement under impact or tensile force.

[0045] The first flexible adsorption layer and the corresponding second flexible adsorption layer will generate an attractive force along the normal direction of the large surface of the first flexible adsorption layer (i.e., the direction perpendicular to the large surface of the first flexible adsorption layer). When the first flexible adsorption layer and the corresponding second flexible adsorption layer are subjected to impact force in a drop scenario or tensile force in a bending scenario, they will have relative displacement, such as sliding or separating relative to each other.

[0046] The foldable device provided in this application embodiment connects the first and second housings via a pivot mechanism, enabling the opening and closing movements of the first and second housings. The flexible display module can follow the movement of the first and second housings. In the flattened state, the first support member and the first transition area, and the second support member and the second transition area, are tightly attracted by suction. During the transition from the closed state to the flattened state, such as during the bending process at the beginning of the flattened state, the suction reduces the risk of arching in the first and second transition areas. The attraction between the first support member and the first transition area (and between the second support member and the second transition area) is not strong; under stress, relative displacement can occur between the first support member and the first transition area (and between the second support member and the second transition area). During drop impacts or bending processes, this releases the internal stress of the flexible display module, protecting it and improving its reliability.

[0047] In one alternative implementation, the first flexible adsorption layer is a third magnetic layer, the second flexible adsorption layer is a fourth magnetic layer, the third magnetic layer of the first support and the fourth magnetic layer of the first transition region are disposed opposite to each other and have opposite polarities, and the third magnetic layer of the second support and the fourth magnetic layer of the second transition region are disposed opposite to each other and have opposite polarities.

[0048] In one alternative implementation, when the foldable device is in a flattened state, along the thickness direction of the main axis, the center of the third magnetic layer located in the first support is aligned with the center of the fourth magnetic layer located in the first transition zone; the center of the third magnetic layer located in the second support is aligned with the center of the fourth magnetic layer located in the second transition zone.

[0049] A magnetic attraction force is generated between the third magnetic layer and the corresponding fourth magnetic layer along the large surface normal of the third magnetic layer (and the large surface normal of the fourth magnetic layer). This magnetic attraction force tightly binds the first support member and the first transition zone (and between the second support member and the second transition zone). During the bending process from the flattened state, this attraction force reduces the risk of arching in the first and second transition zones. Under stress, relative displacement can occur between the first support member and the first transition zone (and between the second support member and the second transition zone), protecting the flexible display module.

[0050] In one alternative implementation, when the foldable device is in a flattened state, the center of the third magnetic layer of the first support member, the center of the fourth magnetic layer of the first transition zone, the center of the main shaft, the center of the fourth magnetic layer of the second transition zone, and the center of the third magnetic layer of the second support member are arranged sequentially along the width direction of the main shaft.

[0051] A first magnetic attraction force is generated between the third and fourth magnetic layers along the large surface normal of the third magnetic layer (and the large surface normal of the fourth magnetic layer), and a second magnetic attraction force is generated along the width direction of the main axis. The first magnetic attraction force causes the first support member and the first transition zone (between the second support member and the second transition zone) to be tightly attracted, and the second magnetic attraction force can pre-tighten the first transition zone (and the second transition zone) along the width direction of the main axis, so that the bendable part is in a taut state and the bendable part is flatter.

[0052] In one alternative implementation, the distance between the center of the third magnetic layer located in the first support (second support) and the center of the fourth magnetic layer located in the first transition region (second transition region) can be 0.05 mm to 5 mm.

[0053] In one alternative implementation, the third magnetic layer can be a single magnet or an array of magnets. The fourth magnetic layer can also be a single magnet or an array of magnets. The goal is to achieve magnetic adsorption between the third and fourth magnetic layers.

[0054] In one alternative implementation, the first flexible adsorption layer of the first support (second support) can be a magnetic material assembled on the first support (second support).

[0055] In one alternative implementation, the first flexible adsorption layer of the first support member (second support member) can be a magnetic material formed on the first support member (second support member). The first flexible adsorption layer can be an electroplated magnetic material or the like, and can be applied to the first support member (second support member) by electroplating or similar methods.

[0056] In one alternative implementation, the first support (second support) and the first flexible adsorption layer can be an integral magnetic material or a magnetized material.

[0057] In one alternative implementation, the second flexible adsorption layer of the first transition region (second transition region) can be a magnetic material assembled in the first transition region (second transition region).

[0058] In one alternative implementation, the second flexible adsorption layer in the first transition region (second transition region) can be a magnetic material formed in the first transition region (second transition region). The second flexible adsorption layer can be an electroplated magnetized material, etc., and can be disposed in the first transition region (second transition region) by means of electroplating or the like.

[0059] In one alternative implementation, the first transition region (second transition region) and the second flexible adsorption layer can be an integrally structured magnetically conductive material or a magnetized material.

[0060] In one alternative implementation, the first flexible adsorption layer and the second flexible adsorption layer are electrostatic adsorption materials, and the first flexible adsorption layer and the second flexible adsorption layer are electrostatically adsorbed. Attached Figure Description

[0061] Figure 1 (a) to (c) in the figure are schematic diagrams of the foldable device of the relevant technology in the closed state and two flattened states, respectively; Figure 2 This is a schematic diagram of the structure of the foldable device provided in the embodiments of this application in the flattened state; Figure 3 for Figure 2 Exploded 3D view of a foldable device; Figure 4 for Figure 3 A schematic diagram of the rotating shaft mechanism in a foldable device; Figure 5 for Figure 2 A schematic diagram of the foldable device in its closed state; Figure 6 for Figure 2 A schematic diagram of the structure of the foldable device in its intermediate state; Figure 7 for Figure 5 A cross-sectional view of the pivot mechanism position of the foldable device in the closed state; Figure 8 for Figure 2 A cross-sectional view of the pivot mechanism position of the foldable device in its flattened state; Figure 9 (a) and (b) in the figure are cross-sectional views of the foldable device provided in different embodiments of this application in the closed state; Figure 10 A schematic diagram of the structure of the first magnetic layer in a foldable device provided in an embodiment of this application; Figure 11 A schematic diagram of the structure of the first magnetic layer in the foldable device provided in this application embodiment, which is coated with magnetic powder. Figure 12 (a) and (b) in the figure are respectively a cross-sectional view of the flexible display module and a structural schematic diagram of the flexible support layer in the foldable device; Figure 13 This is a schematic diagram of the structure of a foldable device in the closed state according to another embodiment of this application; Figure 14 for Figure 13 A schematic diagram of the foldable device in its flattened state; Figure 15 This is a schematic diagram of the structure of a foldable device in the closed state according to another embodiment of this application; Figure 16 for Figure 15 A schematic diagram of the foldable device in its flattened state; Figure 17This is a schematic diagram of the structure of a foldable device in the closed state according to another embodiment of this application; Figure 18 for Figure 17 A schematic diagram of the foldable device in its flattened state; Figure 19 This is a schematic diagram of the structure of a foldable device in the closed state according to another embodiment of this application; Figures 20 to 25 These are schematic diagrams of the foldable devices provided in different embodiments of this application in their flattened state.

[0062] Explanation of reference numerals in the attached figures: 1-Foldable device; 2-Spindle mechanism; 2a-Main shaft; 3-First housing; 4-Second housing; 5-Flexible display module; 5a-Bendable part; 5a1-Bottom of the bendable part; 100 - Foldable devices; 10-Spindle mechanism; 11-Main shaft; 11a-Center of main shaft; 111-Groove; 112-Mounting slot; 12-First fixing frame; 13-Second fixing frame; 14-First support member; 15-Second support member; 16-Screen space; 17-Colloid; 20-First housing; 30-Second housing; 40 - Flexible display module; 41 - First fixing part; 42 - Bendable part; 421 - First transition area; 422 - Bending area; 423 - Second transition area; 43 - Second fixing part; 44 - Flexible display panel; 45 - Flexible support layer; 451 - Opening; 50-First magnetic layer; 51-First substrate layer; 52-First magnetic powder; 53-Colloid; 50A-Nozzle; 60-Second magnetic layer; 61-Magnetic powder section; 71-Colloid; 72-Colloid; 80a-First flexible adsorption layer; 80-Third magnetic layer; 80b-Center of the third magnetic layer; 90a-Second flexible adsorption layer; 90-Fourth magnetic layer; 90b-Center of the fourth magnetic layer. Detailed Implementation

[0063] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may arise based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0064] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0065] It should be understood that, in the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0067] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0068] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0069] See Figure 1 (a) to (c) of the related technology, a foldable device 1 includes: a pivot mechanism 2, a first housing 3, a second housing 4, and a flexible display module 5. The first housing 3 and the second housing 4 are connected by the pivot mechanism 2, and the flexible display module 5 is fixed to the first housing 3 and the second housing 4. During the switching between a closed state and a flattened state, the bendable portion 5a of the flexible display module 5 will bend or unfold. During long-term bending, the bendable portion 5a is prone to creep in the length direction of the flexible display module 5, that is, the strain of the bendable portion 5a increases with time.

[0070] See Figure 1 In (a) of the diagram, in the closed state, the bendable portion 5a bends into a teardrop shape. The arc-shaped portion of the bendable portion 5a is supported by the main shaft 2a of the rotating shaft mechanism 2, which lifts it upward to increase the bending radius R of the bendable portion 5a and reduce its creep. The bendable portion 5a is supported by the main shaft 2a, and there is rigid contact between the main shaft 2a and the bottom 5a1 of the bendable portion 5a. The internal force of the bendable portion 5a is uneven and discontinuous, and the creep of the bendable portion 5a will cause local accumulation.

[0071] See Figure 1 In (b) and (c), when switching from the closed state to the flattened state, the bendable part 5a cannot quickly or completely recover to a flat state. The creep recovery of the flattened bendable part 5a is discontinuous. Under the illumination of light, the bendable part 5a has obvious light and shadow and creases.

[0072] This application provides a foldable device, which may be a mobile phone, tablet computer, laptop computer, super mobile personal computer, e-book reader, netbook, personal digital assistant, wearable device (such as a watch), television, in-vehicle device, robot, etc.

[0073] See Figures 2 to 4 The foldable device 100 of this application embodiment includes a pivot mechanism 10, a first housing 20, a second housing 30, and a flexible display module 40. The pivot mechanism 10 includes a main shaft 11, a first fixing frame 12, a second fixing frame 13, a first support member 14, and a second support member 15. When the pivot mechanism 10 is in a flattened state, the first fixing frame 12 and the second fixing frame 13 are respectively disposed on both sides of the main shaft 11 along the width direction X, and the first support member 14 and the second support member 15 are respectively disposed on both sides of the main shaft 11 along the width direction X. Figure 5 , Figure 6 The first fixing bracket 12 and the second fixing bracket 13 are rotatable relative to the main shaft 11, allowing the rotating shaft mechanism 10 to switch between a flattened state and a closed state. The rotating shaft mechanism 10 is located between the first housing 20 and the second housing 30. The first fixing bracket 12 is fixed to the first housing 20, and the second fixing bracket 13 is fixed to the second housing 30. The flexible display module 40 has a first fixing part 41, a bendable part 42, and a second fixing part 43 connected in sequence. The first fixing part 41 is fixed to the first housing 20, and the second fixing part 43 is fixed to the second housing 30. The bendable part 42 and the rotating shaft mechanism 10 are arranged opposite to each other. (See reference...) Figure 7 The main shaft 11 is provided with a first magnetic layer 50, and the bendable portion 42 is provided with a second magnetic layer 60. The first magnetic layer 50 and the second magnetic layer 60 are arranged opposite each other and have the same polarity. When the rotating shaft mechanism 10 is in the closed state, a screen-receiving space 16 is formed between the first support member 14, the main shaft 11, and the second support member 15. The bendable portion 42 is partially arc-shaped and located within the screen-receiving space 16. The bendable portion 42 and the main shaft 11 are spaced apart or abut against each other. See reference. Figure 8 When the rotating shaft mechanism 10 is in a flattened state, the bendable part 42 is flat, and the first support member 14, the main shaft 11 and the second support member 15 are flush to support the bendable part 42.

[0074] To facilitate the description of the position and orientation of the foldable device 100, the width direction of the main shaft 11 is defined as direction X, the length direction of the main shaft 11 is defined as direction Y, and the thickness direction of the main shaft 11 is defined as direction Z. The three directions X, Y, and Z can be perpendicular to each other.

[0075] The first fixing frame 12 and the second fixing frame 13 are respectively provided on both sides of the main shaft 11 along the width direction X. This means that the first fixing frame 12 is provided on one side of the main shaft 11 along the width direction X, and the second fixing frame 13 is provided on the other side of the main shaft 11.

[0076] The first support member 14 and the second support member 15 are respectively provided on both sides of the main shaft 11 along the width direction X. This means that the first support member 14 is provided on one side of the main shaft 11 along the width direction X, and the second support member 15 is provided on the other side of the main shaft 11.

[0077] See Figure 2 , Figure 8 The flattened state of the pivot mechanism 10 refers to the first support member 14 and the second support member 15 being arranged on both sides of the main shaft 11 along the width direction X, with the first support member 14 and the second support member 15 being approximately flush. The first support member 14 and the second support member 15 can be approximately 180° apart (with some deviation allowed, such as 178°, 182°, etc.). When the pivot mechanism 10 is in the flattened state, the first housing 20 and the second housing 30 are arranged along the width direction X of the main shaft 11 and are arranged on both sides of the pivot mechanism 10, with the first housing 20 and the second housing 30 being approximately 180° apart. The flexible display module 40 is supported on the first housing 20, the pivot mechanism 10 and the second housing 30, wherein the bendable part 42 is flattened and supported by the first support member 14, the main shaft 11 and the second support member 15.

[0078] See Figure 5 , Figure 7 The closed state of the pivot mechanism 10 refers to the situation where the first support member 14 and the second support member 15 are close together, and the first support member 14 and the second support member are located above the main shaft 11. The first support member 14, the main shaft 11 and the second support member 15 form a screen-accommodating space 16 that is narrower at the top and wider at the bottom. An acute angle can be formed between the first support member 14 and the second support member 15. When the pivot mechanism 10 is in the closed state, the first housing 20 and the second housing 30 are close together to form a stacked structure. The first fixing part 41 and the second fixing part 43 of the flexible display module 40 are close to each other, and the bendable part 42 is bent in a teardrop shape. The bendable part 42 is located within the screen-accommodating space 16.

[0079] See Figure 6 The rotating mechanism 10 also has an intermediate state in the switching process between the flattened state and the closed state. The first housing 20 and the second housing 30 are neither completely closed nor completely flattened, and a predetermined angle is formed between the first housing 20 and the second housing 30. A predetermined angle is also formed between the first fixing part 41 and the second fixing part 43 in the flexible display module 40, and the bendable part 42 is bent.

[0080] The foldable device 100 provided in this application embodiment has a first housing 20 and a second housing 30 connected by a pivot mechanism 10, enabling the opening and closing movements of the first housing 20 and the second housing 30. The flexible display module 40 can follow the movement of the first housing 20 and the second housing 30. Figure 7The first magnetic layer 50 of the main shaft 11 and the second magnetic layer 60 of the bendable portion 42 have the same polarity, generating a repulsive force F between the main shaft 11 and the bendable portion 42. This repulsive force F assists in shaping the flexible display module 40. During the transition from a flattened state to a closed state, the repulsive force F drives the arc-shaped portion of the bendable portion 42 to rise upwards, forming a gap or slight contact between the arc-shaped portion of the bendable portion 42 and the main shaft 11. The bendable portion 42 bends to form a continuous and uniformly transitioning creep shape, reducing material compression and stretching accumulation during the bending process. Figure 8 During the transition from the closed state to the flattened state, the repulsive force F can drive the creep of the bendable portion 42 to quickly restore its flatness, reducing the light and shadow and creases of the bendable portion 42 when transitioning from the closed state to the flattened state.

[0081] In some embodiments, see Figure 3 The first housing 20 and the second housing 30 can be used to mount circuit boards, batteries, receivers, speakers, cameras, and other devices. The circuit boards can house processors, storage units, and other devices. The flexible display module 40 and the first housing 20 (or the second housing 30) can be connected by means of adhesive bonding or other methods.

[0082] In some embodiments, see Figure 4 The main shaft 11 in the rotating shaft mechanism 10 can be generally configured as a flat strip. The main shaft 11 may include an inner main shaft and an outer main shaft stacked together, and the inner main shaft and the outer main shaft can be connected by fasteners (such as screws), clips, etc.

[0083] In some embodiments, see Figure 4 The first fixed frame 12 and the second fixed frame 13 in the rotating shaft mechanism 10 can be configured as strips or other shapes. Figure 8 The first fixing frame 12 and the first housing 20, and the second fixing frame 13 and the second housing 30, can be connected by means of adhesive 17, snap-fit, fasteners (such as screws).

[0084] In some embodiments, see Figure 4 The first support member 14 and the second support member 15 in the rotating shaft mechanism 10 can be roughly plate-shaped (e.g., rectangular plate-shaped), with a compact structure and small space occupation. Figure 8 When the pivot mechanism 10 is in a flattened state, the first support member 14 and the second support member 15 can form a large and flat support surface, which can better support the bendable part 42 of the flexible display module 40.

[0085] In some embodiments, see Figure 2 and Figure 3The flexible display module 40 is composed of multiple layers of locally stretchable and compressible materials stacked in the thickness direction. For example, the flexible display module 40 includes a flexible display panel and a flexible support layer stacked in phase.

[0086] Flexible display panels can be used to emit light to display information. These panels can be OLED displays, active-matrix OLED displays, miniature OLED displays, micro-OLED displays, quantum dot OLED displays, and more. Flexible display panels can also incorporate a touch layer to detect touch inputs applied to or near the panel.

[0087] The flexible support layer is used to provide support for the flexible display panel. The flexible support layer can be installed on the first housing 20 and the second housing 30 to give the flexible display module 40 good flatness.

[0088] In some embodiments, see Figure 7 and Figure 8 In the thickness direction Z of the main shaft 11, the projection of the second magnetic layer 60 can cover the projection of the first magnetic layer 50. During the switching between the closed and flattened states of the rotating shaft mechanism 10, the first magnetic layer 50 and the second magnetic layer 60 remain facing each other to form a certain magnetic repulsion force F, so that a gap or slight contact is formed between the bendable part 42 and the main shaft 11. In the closed state, the bendable part 42 bends to form a creep shape with a continuous and uniform transition. In the flattened state, the creep of the bendable part can quickly return to a flat state.

[0089] In some embodiments, see Figure 8 When the rotating shaft mechanism 10 is in a flattened state, along the width direction X of the main shaft 11, the width w2 of the second magnetic layer 60 can be greater than or equal to the width w0 of the main shaft 11, and the width w1 of the first magnetic layer 50 can be less than or equal to the width w0 of the main shaft 11.

[0090] A larger area of ​​the second magnetic layer 60 is arranged on the bendable portion 42 of the flexible display module 40, so that when the pivot mechanism 10 is in a flattened state, a closed state, or an intermediate state, a large repulsive force F can be generated between the second magnetic layer 60 and the first magnetic layer 50. The repulsive force F lifts the bendable portion 42, thereby assisting in the shaping of the flexible display module 40. The width w1 of the first magnetic layer 50 does not exceed the width w0 of the main shaft 11. The first magnetic layer 50 is arranged on the main shaft 11 without affecting the arrangement of the first support member 14 and the second support member 15 on the main shaft 11.

[0091] In some embodiments, see Figure 4 and Figure 7The main shaft 11 has a groove 111 on the side facing the bendable portion 42. When the rotating shaft mechanism 10 is in the closed state, the bendable portion 42 is at least partially located within the groove 111. The groove 111 can accommodate the arc-shaped portion of the bendable portion 42, and a gap or slight contact is formed between the bottom of the arc-shaped portion of the bendable portion 42 and the main shaft 11, reducing the contact force between the bendable portion 42 and the main shaft 11, so that the bendable portion 42 can be bent into a continuous and smooth shape.

[0092] In some embodiments, see Figure 7 , Figure 8 The first magnetic layer 50 is disposed on the surface of the groove 111 facing the second magnetic layer 60. This facilitates the arrangement of the first magnetic layer 50 on the main shaft 11, and a magnetic repulsion force F is formed between the first magnetic layer 50 and the second magnetic layer 60, so that a gap or slight contact is formed between the bendable part 42 and the main shaft 11.

[0093] In some embodiments, see Figure 7 , Figure 8 On the vertical plane (XZ plane) along the length of the spindle 11, the cross-section of the surface of the groove 111 is arc-shaped. In the closed state, the bendable portion 42 is located within the groove 111. This allows for more space inside the spindle 11 to accommodate other parts (such as gears).

[0094] In some embodiments, see Figure 9 The first magnetic layer 50 is laid flat on the side of the main shaft 11 facing the bendable portion 42. This facilitates the arrangement of the first magnetic layer 50 on the main shaft 11, and the first magnetic layer 50 and the flexible display module 40 can be in no contact or only slight contact.

[0095] For example, see Figure 9 In (a), the main shaft 11 has a mounting groove 112 on the side facing the bendable part 42, and the first magnetic layer 50 is embedded in the mounting groove 112 to facilitate the positioning and assembly of the first magnetic layer 50.

[0096] For example, see Figure 9 In (b), the side of the main shaft 11 facing the bendable part 42 is a plane, and the first magnetic layer 50 is directly installed on the side of the main shaft 11 facing the bendable part 42.

[0097] In some embodiments, see Figure 7 and Figure 8 The second magnetic layer 60 is disposed on the side of the bendable portion 42 facing the main shaft 11. The first magnetic layer 50 and the second magnetic layer 60 are arranged close to each other to generate a large repulsive force F between the first magnetic layer 50 and the second magnetic layer 60. Moreover, the second magnetic layer 60 does not affect the front display effect of the bendable portion 42.

[0098] There are several possible implementation methods when setting the first magnetic layer 50. Two implementation methods are given as examples below.

[0099] The first implementation method of the first magnetic layer 50: see [link / reference] Figure 10 The first magnetic layer 50 includes a first substrate layer 51 and a first magnetic powder 52, wherein the first magnetic powder 52 is disposed on the first substrate layer 51 and bonded to it. Figure 7 The first substrate layer 51 is mounted on the spindle 11.

[0100] The first magnetic powder 52 is attached to the first substrate layer 51, which serves as a carrier for the first magnetic powder 52. The first substrate layer 51 with the first magnetic powder 52 is placed on the main shaft 11, which makes it easy to form and assemble.

[0101] The first magnetic powder 52 can be deposited on the first substrate layer 51 by methods such as vacuum evaporation, electrodeposition, sputtering, or chemical plating. The first magnetic layer 50 can be a single layer or multiple layers. Multiple first magnetic layers 50 can be stacked. The first substrate layer 51 can be deposited on the spindle 11 by methods such as bonding or welding with colloid 53.

[0102] The second implementation method for the first magnetic layer 50: see [link / reference] Figure 11 The first magnetic layer 50 includes a first magnetic powder layer attached to the spindle 11. The first magnetic powder layer is formed by directly attaching the magnetic powder to the spindle 11, which is easy to shape. The magnetic powder can be attached to the spindle 11 by spraying, printing, or other methods using a nozzle 50A. A protective film can be provided on the outside of the first magnetic powder layer to protect it.

[0103] There are several possible implementation methods when setting the second magnetic layer 60. Three implementation methods are given as examples below.

[0104] The first method for implementing the second magnetic layer 60: See [link / reference] Figure 7 The second magnetic layer 60 includes a second substrate layer and a second magnetic powder. The second magnetic powder is disposed on the second substrate layer, and the second substrate layer is mounted on the bendable portion 42. The manner in which the second magnetic powder is disposed on the second substrate layer can be seen in [example missing]. Figure 10 The first magnetic powder 52 is disposed on the first substrate layer 51 as shown.

[0105] The second magnetic powder is attached to the second substrate layer, which serves as a carrier for the second magnetic powder. The second substrate layer with the second magnetic powder is placed on the bendable part 42, making it easy to form and assemble.

[0106] The second magnetic powder can be deposited on the second substrate layer using methods such as vacuum evaporation, electrodeposition, sputtering, or chemical plating. The second magnetic layer 60 can be a single layer or multiple layers. Multiple second magnetic layers 60 can be stacked. The second substrate layer can be deposited on the bendable portion 42 using methods such as adhesive bonding or welding.

[0107] A second implementation of the second magnetic layer 60: The second magnetic layer 60 includes a second magnetic powder layer attached to the bendable portion 42. The second magnetic powder layer is formed by directly attaching the magnetic powder to the bendable portion 42, which is easy to shape. The magnetic powder can be attached to the bendable portion 42 by spraying, printing, or other methods. A protective film can be provided on the outside of the second magnetic powder layer to protect it.

[0108] The third method for implementing the second magnetic layer 60: See [link / reference] Figure 12 In (a) and (b), the flexible display module 40 includes a flexible display panel 44 and a flexible support layer 45 stacked on each other. The flexible support layer 45 is closer to the first magnetic layer 50 than the flexible display panel 44. The flexible support layer 45 has a plurality of openings 451 at the main shaft 11. The second magnetic layer 60 includes a magnetic powder portion 61 disposed in the openings 451.

[0109] The flexible support layer 45 supports the flexible display panel 44. The openings 451 in the flexible support layer 45 reduce the rigidity of this area, making it easier to bend and deform. Magnetic powder is placed within the openings 451 of the flexible support layer 45 to form magnetic powder sections 61, making full use of space and facilitating molding. A protective film can be applied to the area of ​​the flexible support layer 45 where the magnetic powder sections 61 are located to protect them. Magnetic powder can be attached to the openings 451 of the flexible support layer 45 by spraying, printing, or other methods.

[0110] In some embodiments, see Figure 2 , Figure 7 , Figure 8 The bendable portion 42 includes a first transition zone 421, a bending zone 422, and a second transition zone 423 connected in sequence. The first fixing portion 41 and the bending zone 422 are connected through the first transition zone 421, and the second fixing portion 43 and the bending zone 422 are connected through the second transition zone 423. The bending zone 422 is disposed opposite to the main shaft 11, the first transition zone 421 is disposed opposite to the first support member 14, and the second transition zone 423 is disposed opposite to the second support member 15.

[0111] During the transition from the flattened state to the closed state, the first fixing part 41 moves with the first housing 20, the second fixing part 43 moves with the second housing 30, the first transition zone 421 and the second transition zone 423 move closer to the first fixing part 41 and the second fixing part 43 respectively, the bending zone 422 gradually bends, and the first transition zone 421, the bending zone 422 and the second transition zone 423 gradually form a teardrop-shaped bending shape in cross section.

[0112] During the transition from the closed state to the flattened state, the first fixing part 41 moves with the first housing 20, the second fixing part 43 moves with the second housing 30, the first transition area 421 and the second transition area 423 unfold with the first fixing part 41 and the second fixing part 43 respectively, and the bending area 422 gradually flattens out until the first transition area 421, the bending area 422 and the second transition area 423 are arranged in parallel.

[0113] In some embodiments, see Figure 13 , Figure 14 The first transition zone 421 and the first support member 14 are bonded together by adhesive 71, and the second transition zone 423 and the second support member 15 are bonded together by adhesive 72. Fixing the first transition zone 421 of the bendable portion 42 to the first support member 14 and the second transition zone 423 to the second support member 15 reduces the arching of the first and second transition zones 421 and 423 in the closed state, reduces the extrusion deformation of the bendable portion 42, and improves the reliability of the flexible display module 40. Adhesives 71 and 72 can be double-sided adhesive or applied adhesive.

[0114] In some embodiments, see Figure 7 and Figure 8 The first transition zone 421 and the first support member 14 are arranged facing each other without being bonded together with adhesive. The second transition zone 423 and the second support member 15 are arranged facing each other without being bonded together with adhesive. During the switching between the closed state and the flattened state, the first transition zone 421 and the second transition zone 423 can be freely deformed.

[0115] In some embodiments, see Figure 15 and Figure 16 The main shaft 11 is provided with a first magnetic layer 50, and the bendable portion 42 is provided with a second magnetic layer 60. The first magnetic layer 50 and the second magnetic layer 60 are arranged opposite to each other and have the same polarity. The first support member 14 and the second support member 15 are both provided with a third magnetic layer 80, and the first transition region 421 and the second transition region 423 are both provided with a fourth magnetic layer 90. The third magnetic layer 80 of the first support member 14 and the fourth magnetic layer 90 of the first transition region 421 are arranged opposite to each other and have opposite polarities to generate an attractive force between the first support member 14 and the first transition region 421. The third magnetic layer 80 of the second support member 15 and the fourth magnetic layer 90 of the second transition region 423 are arranged opposite to each other and have opposite polarities to generate an attractive force between the second support member 15 and the second transition region 423.

[0116] During the transition from the flattened state to the closed state, the aforementioned suction force drives the bending area 422 to expand and shape to both sides. Combined with the rigidity of the bending area 422 itself, this facilitates the formation of a continuous arc shape near the main shaft 11, increasing the free angle α of the flexible display module 40 in the closed state. This creates a gap or slight contact between the bending area 422 and the main shaft 11, reducing the contact force between them and allowing the bending portion 42 to bend into a continuous and smooth shape. During the transition from the closed state to the flattened state, the aforementioned suction force reduces the risk of arching in the first transition area 421 and the second transition area 423, improving the reliability of the flexible display module 40.

[0117] The free angle α of the closed state of the flexible display module 40 is the angle formed between the first transition region 421 and the second transition region 423 when the flexible display module 40 is in the closed state, with the bendable part 42 of the flexible display module 40 in the shape of a teardrop.

[0118] The third magnetic layer 80 can be set in the same way as the first magnetic layer 50. For example, the third magnetic layer 80 can be made by magnetic powder being placed on the substrate layer, or the magnetic powder can be directly attached to the support.

[0119] The fourth magnetic layer 90 can be set in the same way as the second magnetic layer 60. For example, the fourth magnetic layer 90 can be made by placing magnetic powder on the substrate layer, or by attaching magnetic powder directly to the transition area.

[0120] In other embodiments, the main shaft 11 is provided with a first magnetic layer 50, and the bendable portion 42 is provided with a second magnetic layer 60. The first magnetic layer 50 and the second magnetic layer 60 are arranged opposite each other and have the same polarity. The first support member 14 is provided with a third magnetic layer 80, and the first transition region 421 is provided with a fourth magnetic layer 90. The third magnetic layer 80 of the first support member 14 and the fourth magnetic layer 90 of the first transition region 421 are arranged opposite each other and have opposite polarities to generate an attractive force between the first support member 14 and the first transition region 421. During the transition from the flattened state to the closed state, the aforementioned attractive force can drive the bending region 422 to expand and shape towards the first support member 14, thereby reducing the contact force between the bending region 422 and the main shaft 11 to a certain extent. During the transition from the closed state to the flattened state, the aforementioned attractive force can reduce the risk of arching of the first transition region 421.

[0121] In other embodiments, the main shaft 11 is provided with a first magnetic layer 50, and the bendable portion 42 is provided with a second magnetic layer 60. The first magnetic layer 50 and the second magnetic layer 60 are disposed opposite to each other and have the same polarity. The second support member 15 is provided with a third magnetic layer 80, and the second transition region 423 is provided with a fourth magnetic layer 90. The third magnetic layer 80 of the second support member 15 and the fourth magnetic layer 90 of the second transition region 423 are disposed opposite to each other and have opposite polarities to generate an attractive force between the second support member 15 and the second transition region 423. During the transition from the flattened state to the closed state, the aforementioned attractive force can drive the bending region 422 to expand and shape towards the second support member 15, thereby reducing the contact force between the bending region 422 and the main shaft 11 to a certain extent. During the transition from the closed state to the flattened state, the aforementioned attractive force can reduce the risk of arching of the second transition region 423.

[0122] In some embodiments, along the width direction X of the main shaft 11, a first connecting rod (not shown) and a first swing arm (not shown) are provided on one side of the main shaft 11, and a second connecting rod (not shown) and a second swing arm (not shown) are provided on the other side of the main shaft 11. A first support member 14, a first fixed frame 12, a first connecting rod, and a first swing arm are correspondingly arranged on the same side of the main shaft 11. One end of the first connecting rod is rotatably connected to the main shaft 11, and the other end is slidably mounted on the first fixed frame 12. One end of the first swing arm is rotatably connected to the main shaft 11, and the other end is rotatably connected to the first fixed frame 12. The first connecting rod and the first swing arm are parallel to and do not coincide with the axis of rotation of the main shaft 11. One end of the first support member 14 can be rotatably connected to the first fixed frame 12. The first fixed frame 12 is fixed to the first housing 20. When the first housing 20 rotates relative to the main shaft 11, the first fixed frame 12 will drive the first connecting rod and the first swing arm to rotate relative to the main shaft 11, and drive the first support member 14 to move.

[0123] A second support member 15, a second fixed frame 13, a second connecting rod, and a second swing arm are correspondingly arranged on the same side of the main shaft 11. One end of the second connecting rod is rotatably connected to the main shaft 11, and the other end of the second connecting rod is slidably mounted on the second fixed frame 13. One end of the second swing arm is rotatably connected to the main shaft 11, and the other end of the second swing arm is rotatably connected to the second fixed frame 13. The second connecting rod and the second swing arm are parallel to but do not coincide with the axis of rotation of the main shaft 11. One end of the second support member 15 is rotatably connected to the second fixed frame 13. The second fixed frame 13 is fixed to the second housing 30. When the second housing 30 rotates relative to the main shaft 11, the second fixed frame 13 will drive the second connecting rod and the second swing arm to rotate relative to the main shaft 11, and drive the second support member 15 to move.

[0124] During the process of the rotating shaft mechanism 10 switching from the flat state to the closed state, the first fixed frame 12 and the second fixed frame 13 gradually approach each other, and the first support member 14 and the second support member 15 gradually approach each other in conjunction, forming a screen-accommodating space 16 with the first support member 14, the main shaft 11 and the second support member 15.

[0125] During the process of the rotating shaft mechanism 10 switching from the closed state to the flattened state, the first fixed frame 12 and the second fixed frame 13 gradually unfold, and the first support member 14 and the second support member 15 gradually unfold in conjunction until the first support member 14 and the second support member 15 are flattened and arranged on both sides of the main shaft 11 along the width direction X of the main shaft 11.

[0126] In some embodiments, see Figure 2 , Figure 5 The foldable device 100 may include a hinge mechanism 10 and a first housing 20 and a second housing 30 respectively connected to both sides of the hinge mechanism 10. The first housing 20 and the second housing 30 are folded and unfolded through the hinge mechanism 10. For example, the foldable electronic device is a dual-folding screen phone, which can be a large folding screen phone or a small folding screen phone. The foldable electronic device can also be a foldable tablet computer.

[0127] In other embodiments, the foldable device 100 may include two or more first housings 20, with a second housing 30 disposed between each pair of adjacent first housings 20, and a pivot mechanism 10 connecting adjacent first housings 20 and second housings 30. When folded, the foldable device 100 forms a stacked structure of three or more layers. For example, a foldable electronic device is a tri-fold screen mobile phone.

[0128] See Figure 17 and Figure 18 This application provides a foldable device 100, including: a pivot mechanism 10, a first housing 20, a second housing 30, and a flexible display module 40. The pivot mechanism 10 includes a main shaft 11, a first fixing frame 12, a second fixing frame 13, a first support member 14, and a second support member 15. The first fixing frame 12 and the second fixing frame 13 are respectively disposed on both sides of the main shaft 11 along the width direction X, and the first support member 14 and the second support member 15 are respectively disposed on both sides of the main shaft 11 along the width direction X. The first fixing frame 12 and the second fixing frame 13 can rotate relative to the main shaft 11, so that the pivot mechanism 10 can switch between a flattened state and a closed state.

[0129] The pivot mechanism 10 is located between the first housing 20 and the second housing 30. The first fixing frame 12 is fixed to the first housing 20, and the second fixing frame 13 is fixed to the second housing 30. The flexible display module 40 has a first fixing part 41, a bendable part 42, and a second fixing part 43 connected in sequence. The first fixing part 41 is fixed to the first housing 20, and the second fixing part 43 is fixed to the second housing 30. The bendable part 42 and the pivot mechanism 10 are arranged opposite to each other.

[0130] The bendable portion 42 includes a first transition zone 421, a bending zone 422, and a second transition zone 423 connected in sequence. The first fixing portion 41 and the bending zone 422 are connected through the first transition zone 421, and the second fixing portion 43 and the bending zone 422 are connected through the second transition zone 423. The bending zone 422 is disposed opposite to the main shaft 11, the first transition zone 421 is disposed opposite to the first support member 14, and the second transition zone 423 is disposed opposite to the second support member 15.

[0131] Both the first support member 14 and the second support member 15 are provided with a third magnetic layer 80, and both the first transition region 421 and the second transition region 423 are provided with a fourth magnetic layer 90. The third magnetic layer 80 of the first support member 14 and the fourth magnetic layer 90 of the first transition region 421 are arranged opposite to each other and have opposite polarities to generate an attractive force between the first support member 14 and the first transition region 421. The third magnetic layer 80 of the second support member 15 and the fourth magnetic layer 90 of the second transition region 423 are arranged opposite to each other and have opposite polarities to generate an attractive force between the second support member 15 and the second transition region 423. The main shaft 11 may not be provided with a first magnetic layer, and the bendable portion 42 may not be provided with a second magnetic layer.

[0132] Alternatively, a third magnetic layer 80 and a fourth magnetic layer 90 can be provided on one side of the main shaft 11 along the width direction X. For example, the first support member 14 is provided with a third magnetic layer 80 and the first transition region 421 is provided with a fourth magnetic layer 90; or, the second support member 15 is provided with a third magnetic layer 80 and the second transition region 423 is provided with a fourth magnetic layer 90.

[0133] See Figure 17 When the rotating shaft mechanism 10 is in the closed state, a screen-receiving space 16 is formed between the first support member 14, the main shaft 11, and the second support member 15. The bendable portion 42 is partially arc-shaped and located within the screen-receiving space 16. (See also...) Figure 18 When the rotating shaft mechanism 10 is in a flattened state, the bendable part 42 is flat, and the first support member 14, the main shaft 11 and the second support member 15 are flush to support the bendable part 42.

[0134] During the transition from the flattened state to the closed state, the aforementioned suction force drives the bending area 422 to expand and shape to both sides. Combined with the rigidity of the bending area 422 itself, this facilitates the formation of a continuous arc shape near the main shaft 11, increasing the free angle α of the flexible display module 40 in the closed state. This creates a gap or slight contact between the bending area 422 and the main shaft 11, reducing the contact force between them and allowing the bending portion 42 to bend into a continuous and smooth shape. During the transition from the closed state to the flattened state, the aforementioned suction force reduces the risk of arching in the first transition area 421 and the second transition area 423, improving the reliability of the flexible display module 40.

[0135] See Figure 19 , Figure 20 This application provides a foldable device 100, including: a pivot mechanism 10, a first housing 20, a second housing 30, and a flexible display module 40. The pivot mechanism 10 includes a main shaft 11, a first fixing frame 12, a second fixing frame 13, a first support member 14, and a second support member 15. The first fixing frame 12 and the second fixing frame 13 are respectively disposed on both sides of the main shaft 11 along the width direction X, and the first support member 14 and the second support member 15 are also respectively disposed on both sides of the main shaft 11 along the width direction X. The first fixing frame 12 and the second fixing frame 13 can rotate relative to the main shaft 11, allowing the pivot mechanism 10 to switch between a flattened state and a closed state. The pivot mechanism 10 is located between the first housing 20 and the second housing 30, with the first fixing frame 12 fixed to the first housing 20 and the second fixing frame 13 fixed to the second housing 30. The flexible display module 40 has a first fixing part 41, a bendable part 42, and a second fixing part 43 connected in sequence. The bendable part 42 includes a first transition region 421, a bending region 422, and a second transition region 423 connected in sequence. The first fixing part 41 and the bending region 422 are connected through the first transition region 421, and the second fixing part 43 and the bending region 422 are connected through the second transition region 423. The first fixing part 41 is fixed to the first housing 20, and the second fixing part 43 is fixed to the second housing 30. The bendable part 42 and the rotating shaft mechanism 10 are disposed opposite to each other.

[0136] See Figure 19 When the rotating shaft mechanism 10 is in the closed state, a screen-containing space 16 is formed between the first support member 14, the main shaft 11 and the second support member 15. The bendable part 42 is partially arc-shaped and located within the screen-containing space 16. The bendable part 42 and the main shaft 11 are spaced apart or abutted.

[0137] See Figure 20 When the rotating shaft mechanism 10 is in a flattened state, the bendable part 42 is flat, and the first support member 14, the main shaft 11 and the second support member 15 are flush to support the bendable part 42.

[0138] Both the first support member 14 and the second support member 15 are provided with a first flexible adsorption layer 80a, and both the first transition region 421 and the second transition region 423 are provided with a second flexible adsorption layer 90a. The first flexible adsorption layer 80a of the first support member 14 and the second flexible adsorption layer 90a of the first transition region 421 are arranged opposite to each other and adsorbed, and can generate relative displacement under impact or tensile force. The first flexible adsorption layer 80a of the second support member 15 and the second flexible adsorption layer 90a of the second transition region 423 are arranged opposite to each other and adsorbed, and can generate relative displacement under impact or tensile force.

[0139] The first flexible adsorption layer 80a and the corresponding second flexible adsorption layer 90a will generate an attractive force along the normal direction of the large surface of the first flexible adsorption layer 80a (i.e., the direction perpendicular to the large surface of the first flexible adsorption layer 80a). The first flexible adsorption layer 80a and the corresponding second flexible adsorption layer 90a will have relative displacement when subjected to impact force in a drop scenario or tensile force in a bending scenario, for example, the two will slide or separate relative to each other.

[0140] The foldable device 100 provided in this application embodiment has a first housing 20 and a second housing 30 connected by a pivot mechanism 10, enabling the opening and closing movements of the first housing 20 and the second housing 30. The flexible display module 40 can follow the movement of the first housing 20 and the second housing 30. In the flattened state, the first support member 14 and the first transition zone 421, and the second support member 15 and the second transition zone 423 are tightly attracted by suction. During the transition from the closed state to the flattened state, such as the bending process at the beginning of the flattened state, the suction can reduce the risk of arching of the first transition zone 421 and the second transition zone 423. The first support member 14 and the first transition zone 421 (and the second support member 15 and the second transition zone 423) are not strongly bonded. Under stress, the first support member 14 and the first transition zone 421 (and the second support member 15 and the second transition zone 423) can generate relative displacement. During the drop impact or bending process, the constraint internal stress of the flexible display module 40 can be released, protecting the flexible display module 40 and improving the reliability of the flexible display module 40.

[0141] In some embodiments, see Figure 2 , Figure 5The first flexible adsorption layer 80a is a third magnetic layer 80, and the second flexible adsorption layer 90a is a fourth magnetic layer 90. The third magnetic layer 80 of the first support member 14 and the fourth magnetic layer 90 of the first transition region 421 are arranged opposite to each other and have opposite polarities. Similarly, the third magnetic layer 80 of the second support member 15 and the fourth magnetic layer 90 of the second transition region 423 are arranged opposite to each other and have opposite polarities. The magnetic adsorption of the two magnetic layers ensures a tight magnetic attraction between the first support member 14 and the first transition region 421, and between the second support member 15 and the second transition region 423. During the initial bending process from the flattened state, the attraction reduces the risk of arching in the first transition region 421 and the second transition region 423. Under stress, relative displacement can occur between the first support member 14 and the first transition region 421 (and between the second support member 15 and the second transition region 423). During a drop impact, this releases the constraint stress within the flexible display module 40, protecting the flexible display module 40.

[0142] In some embodiments, see Figure 20 When the foldable device 100 is in a flattened state, along the thickness direction Z of the main axis 11, the center 80b of the third magnetic layer 80 located in the first support member 14 is aligned with the center 90b of the fourth magnetic layer 90 located in the first transition region 421; the center 80b of the third magnetic layer 80 located in the second support member 15 is aligned with the center 90b of the fourth magnetic layer 90 located in the second transition region 423.

[0143] A magnetic attraction force is generated between the third magnetic layer 80 and the corresponding fourth magnetic layer 90 along the large surface normal of the third magnetic layer 80 (and the large surface normal of the fourth magnetic layer 90). This magnetic attraction force causes the first support member 14 and the first transition region 421 (and the second support member 15 and the second transition region 423) to adhere tightly. During the bending process from the flattened state, the aforementioned attraction force can reduce the risk of arching of the first transition region 421 and the second transition region 423. Under stress, relative displacement can occur between the first support member 14 and the first transition region 421 (and the second support member 15 and the second transition region 423), protecting the flexible display module 40.

[0144] In some embodiments, see Figure 21 , Figure 22 When the foldable device 100 is in a flattened state, along the width direction X of the main shaft 11, the center 80b of the third magnetic layer 80 of the first support member 14, the center 90b of the fourth magnetic layer 90 of the first transition zone 421, the center 11a of the main shaft 11, the center 90b of the fourth magnetic layer 90 of the second transition zone 423, and the center 80b of the third magnetic layer 80 of the second support member 15 are arranged in sequence.

[0145] Along the width direction X of the main axis 11, the center 80b of the third magnetic layer 80 of the first support member 14 (second support member 15) is positioned away from the main axis 11, while the center 90b of the fourth magnetic layer 90 of the first transition region 421 (second transition region 423) is positioned close to the main axis 11. A first magnetic attraction force is generated between the third magnetic layer 80 and the fourth magnetic layer 90 along the large surface normal of the third magnetic layer 80 (and the large surface normal of the fourth magnetic layer 90), and a second magnetic attraction force is generated along the width direction X of the main axis 11. The first magnetic attraction force causes the first support member 14 and the first transition region 421 (and the second support member 15 and the second transition region 423) to adhere tightly, while the second magnetic attraction force can pre-tighten the first transition region 421 (second transition region 423) along the width direction X of the main axis 11, keeping the bendable portion 42 in a taut state, making the bendable portion 42 flatter, and reducing the likelihood of creases forming in the first transition region 421 (second transition region 423).

[0146] The distance between the center 80b of the third magnetic layer 80 located in the first support member 14 (second support member 15) and the center 90b of the fourth magnetic layer 90 located in the first transition region 421 (second transition region 423) can be 0.05 mm to 5 mm.

[0147] For example, the distance between the center 80b of the third magnetic layer 80 and the center 90b of the corresponding fourth magnetic layer 90 can be 0.05 mm, 0.1 mm, 0.2 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm, or a range between the above two values, which can be set as needed.

[0148] In some embodiments, see Figure 21 , Figure 22 The third magnetic layer 80 can be a single magnet or an array of magnets. The fourth magnetic layer 90 can also be a single magnet or an array of magnets. The magnetic attraction between the third magnetic layer 80 and the fourth magnetic layer 90 is sufficient. The type of magnet in the third magnetic layer 80 and the fourth magnetic layer 90 can be configured as needed.

[0149] A magnet array is a structure composed of multiple permanent magnets arranged in a specific geometric configuration and magnetization direction. For example, the Helbeck linear array achieves maximum magnetic field strength with minimal magnet usage. The multiple permanent magnets in the magnet array can be arranged along the width direction X of the principal axis 11.

[0150] For example, see Figure 21 The third magnetic layer 80 of the first support member 14 (second support member 15) is a single magnet, and the fourth magnetic layer 90 of the first transition region 421 (second transition region 423) is a single magnet.

[0151] For example, see Figure 22The third magnetic layer 80 of the first support member 14 (second support member 15) is a magnet array, and the fourth magnetic layer 90 of the first transition region 421 (second transition region 423) is a magnet array.

[0152] For example, the third magnetic layer 80 of the first support member 14 (second support member 15) is a single magnet, and the fourth magnetic layer 90 of the first transition region 421 (second transition region 423) is an array of magnets.

[0153] For example, the third magnetic layer 80 of the first support member 14 (second support member 15) is a magnet array, and the fourth magnetic layer 90 of the first transition region 421 (second transition region 423) is a single magnet.

[0154] There are several possible implementation methods when setting the first flexible adsorption layer 80a. Three implementation methods are given as examples below.

[0155] The first method for implementing the first flexible adsorption layer 80a: see [link / reference] Figure 20 , Figure 23 The first flexible adsorption layer 80a of the first support member 14 (second support member 15) can be a magnetic material assembled in the first support member 14 (second support member 15). The first flexible adsorption layer 80a can be a block magnet, a flexible magnetic sheet, etc., and can be assembled in the first support member 14 (second support member 15) by means of attachment.

[0156] The second method for implementing the first flexible adsorption layer 80a: See [link / reference] Figure 20 , Figure 23 The first flexible adsorption layer 80a of the first support member 14 (second support member 15) can be a magnetic material formed on the first support member 14 (second support member 15). The first flexible adsorption layer 80a can be an electroplated magnetic material, etc., and can be set on the first support member 14 (second support member 15) by electroplating or other methods.

[0157] The third method for implementing the first flexible adsorption layer 80a: See [link / reference] Figure 24 , Figure 25 The first support member 14 (second support member 15) and the first flexible adsorption layer 80a can be an integral structure of magnetic conductive material or magnetized material, and the first support member 14 (second support member 15) and the first flexible adsorption layer 80a are integrated together.

[0158] The first flexible adsorption layer 80a of the first support member 14 (second support member 15) is provided as needed.

[0159] There are several possible implementation methods for setting the second flexible adsorption layer 90a. Three implementation methods are given as examples below.

[0160] The first method for implementing the second flexible adsorption layer 90a: see [link / reference] Figure 20 , Figure 24 The second flexible adsorption layer 90a of the first transition region 421 (second transition region 423) can be a magnetic material assembled in the first transition region 421 (second transition region 423). The second flexible adsorption layer 90a can be a block magnet, a flexible magnetic sheet, etc., and can be assembled in the first transition region 421 (second transition region 423) by means of attachment.

[0161] The second method for implementing the second flexible adsorption layer 90a: See [link / reference] Figure 20 , Figure 24 The second flexible adsorption layer 90a of the first transition region 421 (second transition region 423) can be a magnetic material formed in the first transition region 421 (second transition region 423). The second flexible adsorption layer 90a can be an electroplated magnetic material, etc., and can be set in the first transition region 421 (second transition region 423) by electroplating or other methods.

[0162] The third method for implementing the second flexible adsorption layer 90a: See [link / reference] Figure 23 , Figure 25 The first transition region 421 (second transition region 423) and the second flexible adsorption layer 90a can be an integral magnetic material or a magnetized material, and the first transition region 421 (second transition region 423) and the second flexible adsorption layer 90a are integrated together.

[0163] The second flexible adsorption layer 90a of the first transition zone 421 (second transition zone 423) is provided as needed.

[0164] It is understandable that the above-mentioned various implementation methods of the first flexible adsorption layer 80a and the second flexible adsorption layer 90a can be combined as needed to form various embodiments.

[0165] For example, see Figure 20 The first flexible adsorption layer 80a of the first support member 14 (second support member 15) can be a magnetic material assembled or formed in the first support member 14 (second support member 15). The second flexible adsorption layer 90a of the first transition region 421 (second transition region 423) can be a magnetic material assembled or formed in the first transition region 421 (second transition region 423).

[0166] For example, see Figure 23 The first flexible adsorption layer 80a of the first support member 14 (second support member 15) can be a magnetic material assembled or formed on the first support member 14 (second support member 15). The first transition region 421 (second transition region 423) and the second flexible adsorption layer 90a can be an integrally structured magnetically conductive material or a magnetized material.

[0167] For example, see Figure 24 The first support member 14 (second support member 15) and the first flexible adsorption layer 80a can be integral magnetic materials or magnetized materials. The second flexible adsorption layer 90a of the first transition region 421 (second transition region 423) can be a magnetic material assembled or formed in the first transition region 421 (second transition region 423).

[0168] For example, see Figure 25 The first support member 14 (second support member 15) and the first flexible adsorption layer 80a can be integrally formed magnetically conductive or magnetically charged materials. The first transition region 421 (second transition region 423) and the second flexible adsorption layer 90a can be integrally formed magnetically conductive or magnetically charged materials.

[0169] In some embodiments, see Figure 19 , Figure 20 The first flexible adsorption layer 80a and the second flexible adsorption layer 90a are electrostatic adsorption materials, and they are electrostatically adsorbed. The use of electrostatic adsorption materials ensures tight electrostatic adsorption between the first support member 14 and the first transition zone 421, and between the second support member 15 and the second transition zone 423. During the bending process from the flattened state, the suction force reduces the risk of arching in the first transition zone 421 and the second transition zone 423. Under stress, relative displacement can occur between the first support member 14 and the first transition zone 421 (and between the second support member 15 and the second transition zone 423), releasing the constrained internal stress of the flexible display module 40 during drop impacts and protecting the flexible display module 40.

[0170] It is understood that the first flexible adsorption layer 80a and the second flexible adsorption layer 90a can also be made of other materials that can adsorb onto each other. Finally, it should be noted that the above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A foldable device, characterized in that, include: A rotating shaft mechanism, a first housing, a second housing, and a flexible display module; The rotating shaft mechanism includes a main shaft, a first fixed frame, a second fixed frame, a first support member, and a second support member; the first fixed frame and the second fixed frame are respectively disposed on both sides of the main shaft along the width direction, and the first support member and the second support member are respectively disposed on both sides of the main shaft along the width direction; the first fixed frame and the second fixed frame can rotate relative to the main shaft, so that the rotating shaft mechanism can switch between a flattened state and a closed state; The rotating shaft mechanism is located between the first housing and the second housing, the first fixing frame is fixed to the first housing, and the second fixing frame is fixed to the second housing; The flexible display module has a first fixing part, a bendable part, and a second fixing part connected in sequence. The first fixing part is fixed to the first housing, and the second fixing part is fixed to the second housing. The bendable part and the rotating shaft mechanism are arranged opposite to each other. The main shaft is provided with a first magnetic layer, and the bendable part is provided with a second magnetic layer. The first magnetic layer and the second magnetic layer are arranged opposite to each other and have the same polarity. When the rotating shaft mechanism is in the closed state, a screen-accommodating space is formed between the first support member, the main shaft and the second support member. The bendable portion is arc-shaped and located within the screen-accommodating space. The bendable portion and the main shaft are spaced apart or abutted. When the rotating shaft mechanism is in the flattened state, the bendable part is flat, and the first support member, the main shaft and the second support member are flush to support the bendable part.

2. The foldable device according to claim 1, characterized in that, In the thickness direction of the main shaft, the projection of the second magnetic layer overlaps the projection of the first magnetic layer.

3. The foldable device according to claim 2, characterized in that, When the rotating shaft mechanism is in the flattened state, the width of the second magnetic layer is greater than or equal to the width of the main shaft, and the width of the first magnetic layer is less than or equal to the width of the main shaft.

4. The foldable device according to any one of claims 1 to 3, characterized in that, The main shaft has a groove on the side facing the bendable part; When the rotating shaft mechanism is in the closed state, the bendable portion is at least partially located within the groove.

5. The foldable device according to claim 4, characterized in that, The first magnetic layer is disposed on the surface of the groove facing the second magnetic layer.

6. The foldable device according to claim 4 or 5, characterized in that, On the vertical plane along the length of the main shaft, the cross-section of the surface of the groove is arc-shaped.

7. The foldable device according to any one of claims 1 to 3, characterized in that, The first magnetic layer is laid flat on the side of the main shaft facing the bendable portion.

8. The foldable device according to any one of claims 1 to 7, characterized in that, The second magnetic layer is disposed on the side of the bendable portion facing the main shaft.

9. The foldable device according to any one of claims 1 to 8, characterized in that, The first magnetic layer includes a first substrate layer and a first magnetic powder, wherein the first magnetic powder is disposed on the first substrate layer and the first substrate layer is mounted on the spindle; And / or, the first magnetic layer includes a first magnetic powder layer attached to the spindle.

10. The foldable device according to any one of claims 1 to 9, characterized in that, The second magnetic layer includes a second substrate layer and a second magnetic powder, wherein the second magnetic powder is disposed on the second substrate layer and the second substrate layer is mounted on the bendable portion; And / or, the second magnetic layer includes a second magnetic powder layer attached to the bendable portion; And / or, the flexible display module includes a flexible display panel and a flexible support layer stacked on top of each other, the flexible support layer having a plurality of openings corresponding to the main shaft, and the second magnetic layer including magnetic powder portions disposed within the openings.

11. The foldable device according to any one of claims 1 to 10, characterized in that, The bendable part includes a first transition area, a bending area and a second transition area connected in sequence. The first fixing part and the bending area are connected through the first transition area, and the second fixing part and the bending area are connected through the second transition area. The bending area and the main shaft are arranged opposite to each other, the first transition area and the first support member are arranged opposite to each other, and the second transition area and the second support member are arranged opposite to each other.

12. The foldable device according to claim 11, characterized in that, The first transition area and the first support member are bonded together with an adhesive, and the second transition area and the second support member are bonded together with an adhesive. Alternatively, the first transition zone and the first support member are arranged facing each other, and the second transition zone and the second support member are arranged facing each other.

13. The foldable device according to claim 11, characterized in that, Both the first support member and the second support member are provided with a third magnetic layer, and both the first transition region and the second transition region are provided with a fourth magnetic layer. The third magnetic layer of the first support member and the fourth magnetic layer of the first transition region are arranged opposite to each other and have opposite polarities. The third magnetic layer of the second support member and the fourth magnetic layer of the second transition region are arranged opposite to each other and have opposite polarities.

14. A foldable device, characterized in that, include: A rotating shaft mechanism, a first housing, a second housing, and a flexible display module; The rotating shaft mechanism includes a main shaft, a first fixed frame, a second fixed frame, a first support member, and a second support member; the first fixed frame and the second fixed frame are respectively disposed on both sides of the main shaft along the width direction, and the first support member and the second support member are respectively disposed on both sides of the main shaft along the width direction; the first fixed frame and the second fixed frame can rotate relative to the main shaft, so that the rotating shaft mechanism can switch between a flattened state and a closed state; The rotating shaft mechanism is located between the first housing and the second housing, the first fixing frame is fixed to the first housing, and the second fixing frame is fixed to the second housing; The flexible display module has a first fixing part, a bendable part, and a second fixing part connected in sequence. The bendable part includes a first transition area, a bending area, and a second transition area connected in sequence. The first fixing part and the bending area are connected through the first transition area, and the second fixing part and the bending area are connected through the second transition area. The first fixing part is fixed to the first housing, and the second fixing part is fixed to the second housing. The bendable part and the rotating shaft mechanism are disposed opposite to each other. Both the first support member and the second support member are provided with a first flexible adsorption layer, and both the first transition area and the second transition area are provided with a second flexible adsorption layer. The first flexible adsorption layer of the first support member and the second flexible adsorption layer of the first transition zone are arranged opposite to each other and adsorb each other, and can generate relative displacement under impact or tensile force. The first flexible adsorption layer of the second support member and the second flexible adsorption layer of the second transition zone are arranged opposite to each other and adsorb each other, and can generate relative displacement under impact or tensile force.

15. The foldable device according to claim 14, characterized in that, The first flexible adsorption layer is a third magnetic layer, and the second flexible adsorption layer is a fourth magnetic layer. The third magnetic layer of the first support and the fourth magnetic layer of the first transition region are arranged opposite to each other and have opposite polarities. The third magnetic layer of the second support and the fourth magnetic layer of the second transition region are arranged opposite to each other and have opposite polarities.

16. The foldable device according to claim 15, characterized in that, When the foldable device is in a flattened state, along the thickness direction of the main axis, the center of the third magnetic layer located in the first support member is aligned with the center of the fourth magnetic layer located in the first transition zone. The center of the third magnetic layer located in the second support is aligned with the center of the fourth magnetic layer located in the second transition zone; Alternatively, when the foldable device is in a flattened state, the magnetic layers located along the width direction of the main shaft are arranged sequentially at the center of the third magnetic layer of the first support member, the center of the fourth magnetic layer of the first transition zone, the center of the main shaft, the center of the fourth magnetic layer of the second transition zone, and the center of the third magnetic layer of the second support member.

17. The foldable device according to claim 15 or 16, characterized in that, The third magnetic layer is a single magnet or an array of magnets; And / or, the fourth magnetic layer is a single magnet or an array of magnets.

18. The foldable device according to claim 14, characterized in that, The first flexible adsorption layer of the first support member is a magnetic material assembled or formed on the first support member; Alternatively, the first support and the first flexible adsorption layer may be an integral structure of a magnetically conductive or magnetized material.

19. The foldable device according to claim 14 or 18, characterized in that, The second flexible adsorption layer in the first transition region is a magnetic material assembled or formed in the first transition region; Alternatively, the first transition region and the second flexible adsorption layer may be an integral structure of a magnetically conductive or magnetized material.

20. The foldable device according to claim 14, characterized in that, The first flexible adsorption layer and the second flexible adsorption layer are electrostatic adsorption materials, and the first flexible adsorption layer and the second flexible adsorption layer are electrostatically adsorbed.

Images