Folding screen supporting mechanism and display device

Abstract

This application discloses a foldable screen support mechanism and display device, relating to the field of foldable display technology. It includes a base, a fan-shaped support member, and a driving member. The base is embedded within the flexible display screen and has an air supply end and a guide groove. The sliding column portion of the fan-shaped support member slides into the guide groove and can rotate. When the sliding column portion is in a first radial position and the fan-shaped support member is in a first posture with its arc surface facing outwards, the fan-shaped support member assembles into a circular structure. When the air supply end supplies air to the guide groove, driving the sliding column portion to slide outwards to a second radial position, the driving member engages with the sliding column portion and drives it to rotate, causing the fan-shaped support member to flip to a second posture with its arc surface facing inwards and assemble into a square structure to support the unfolded flexible display screen. This solution uses airflow to drive the fan-shaped support member to switch from a circular structure to a square structure, providing support for the bending position of the flexible display screen, resulting in fewer wrinkles and a flatter surface at the bending position when unfolded.

Description

Technical Field

[0001] This application relates to the field of foldable display technology, and in particular to a foldable screen support mechanism and display device. Background Technology

[0002] As electronic display devices become thinner, lighter, and more flexible, foldable flexible displays are increasingly being used in various terminal devices. Currently, most mainstream flexible foldable display devices on the market use traditional hinge mechanisms to achieve the folding and unfolding functions of the flexible display, which can meet the basic functional requirements of folding and unfolding display devices.

[0003] However, traditional hinge mechanisms have significant technical defects in practical applications. When a flexible display unfolds from a folded state to a flat state, due to the limitations of the hinge's mechanical structure, the bending position of the flexible display usually exhibits obvious unevenness. This leads to problems such as distorted display images and reduced touch operation accuracy, negatively impacting the user experience. Summary of the Invention

[0004] The main purpose of this application is to propose a folding screen support mechanism, which aims to solve the technical problems that the current folding and unfolding operation of flexible displays relies on hinge mechanisms, and the bending position of flexible displays usually shows obvious unevenness, resulting in screen distortion and reduced touch operation accuracy.

[0005] To achieve the above objectives, this application proposes a foldable screen support mechanism, comprising: A base for embedding inside a flexible display screen; the base is provided with an air supply end and four guide grooves, the air supply end is connected to the guide grooves, the four guide grooves are arranged circumferentially along the base, and the four guide grooves extend radially along the base. Four fan-shaped support members, each having a sliding column portion; the four sliding column portions are slidably fitted into the four guide grooves one-to-one, and the sliding column portions can rotate around their own axis in the guide grooves; when the sliding column portion is located in the first radial position and the fan-shaped support member is in the first posture with the arc surface facing outward, the four fan-shaped support members are assembled to form a circular structure. A driving component is disposed on the base; when the air supply end delivers airflow to the guide groove and drives the sliding column to slide outward from the first radial position to the second radial position, the driving component engages with the sliding column and forms a transmission cooperation; the driving component is used to drive the sliding column to rotate, so as to drive the fan-shaped support to flip to the second posture with the arc surface facing inward; the four fan-shaped support members are assembled in the second posture to form a square structure to support the unfolded flexible display screen.

[0006] In one embodiment, the fan-shaped support member is provided with a limiting fan ring structure, and the central axis of the limiting fan ring structure is coaxially arranged with the rotation axis of the sliding column portion; The folding screen support mechanism also includes a support rod, and the sliding column is rotatably connected to the support rod around its own axis; the first end of the support rod is slidably fitted in the guide groove, and the second end of the support rod is provided with a support mechanism, which abuts against the inner circumference of the limiting fan ring structure.

[0007] In one embodiment, the supporting mechanism includes a base shell, an actuating slider, an inertial slider, a first elastic element, and a second elastic element; The bottom shell is fan-shaped, with its central axis coaxial with the rotation axis of the sliding column. The outer periphery of the bottom shell fits against the inner periphery of the limiting fan-shaped ring structure. A pneumatic chamber is provided on the inner periphery of the bottom shell, and a negative pressure through-hole is provided on the bottom wall of the pneumatic chamber, communicating with the outer periphery of the bottom shell. An actuating slider is located at the second end of the support rod and slides radially within the pneumatic chamber. A first sub-chamber is formed between the actuating slider and the bottom wall of the pneumatic chamber. A drainage gap exists between the slider and the side wall of the pneumatic chamber; the inertial slider slides radially within the pneumatic chamber, and is located on the side of the actuating slider facing away from the negative pressure through hole, forming a second sub-chamber between the inertial slider and the actuating slider; the two ends of the first elastic element are respectively connected to the bottom wall of the pneumatic chamber and the actuating slider, and the two ends of the second elastic element are respectively connected to the actuating slider and the inertial slider, and the elastic modulus of the second elastic element is less than that of the first elastic element; When the radial distance between the inertial slider and the actuating slider increases, the inertial slider is used to draw the gas in the first sub-chamber to the second sub-chamber through the drainage gap, so as to keep the first sub-chamber in a negative pressure state.

[0008] In one embodiment, the supporting mechanism further includes a follower slider and a third elastic element; one end of the third elastic element is connected to the side wall of the pneumatic chamber, and the other end of the third elastic element is connected to the follower slider; the follower slider maintains contact with the actuating slider and the inertial slider under the elastic force provided by the third elastic element. The bottom wall of the pneumatic chamber, the actuating slider, and the follower slider enclose the first sub-chamber, and the actuating slider, the inertial slider, and the follower slider enclose the second sub-chamber. The gap between the actuating slider and the follower slider constitutes the drainage gap.

[0009] In one embodiment, the driving member includes an actuating gear ring rotatably connected to the base; the sliding column portion is configured as a transmission gear, the transmission gear being located within the enclosing area of ​​the actuating gear ring, and the transmission gear meshing with the actuating gear ring at the second radial position; during rotation, the actuating gear ring simultaneously drives four transmission gears to rotate around its own axis.

[0010] In one embodiment, a turbine structure is arranged around the outer periphery of the actuating gear ring; a third airflow channel is provided in the base, one end of the third airflow channel is connected to the guide groove, and the other end of the third airflow channel is connected to the turbine structure; The airflow supplied to the guide groove by the air supply end is delivered to the turbine structure through the third airflow channel, so as to drive the actuation gear ring to rotate through the airflow action.

[0011] In one embodiment, the gas supply end includes a gas supply switch, a first airflow channel, and four second airflow channels; the first airflow channel is disposed through the base, the second airflow channels are disposed inside the base, one end of each of the four second airflow channels is connected to the first airflow channel, and the other end of each of the four second airflow channels is connected to one of the four guide grooves; the gas supply switch is disposed at one end of the first airflow channel, and when the gas supply switch is in the open state, external gas is supplied into the first airflow channel.

[0012] This application also proposes a display device, which includes a flexible display screen and at least two folding screen support mechanisms as described above; The flexible display screen includes a first display layer, a second display layer, a first elastic layer, a second elastic layer, and at least two electronic component layers; the at least two electronic component layers are sandwiched between the first elastic layer and the second elastic layer, and the gap between two adjacent electronic component layers forms a folding space; the first display layer is attached to the side of the first elastic layer opposite to the electronic component layer, and the second display layer is attached to the side of the second elastic layer opposite to the electronic component layer. At least two of the folding screen support mechanisms are arranged at intervals in the folding space; the four fan-shaped support members of each folding screen support mechanism are used to assemble into a square structure to support the first elastic layer and the second elastic layer after unfolding.

[0013] In one embodiment, the display device further includes a first magnetic element and a second magnetic element, which are disposed on the first display layer and are symmetrically arranged about the folding space. When the flexible display screen is folded so that the first display layer faces inward and the second display layer faces outward, the first magnetic element and the second magnetic element attract each other.

[0014] In one embodiment, the display device further includes a third magnetic element and a fourth magnetic element, which are disposed on the second display layer and are symmetrically arranged about the folding space. When the flexible display screen is folded so that the first display layer faces outward and the second display layer faces inward, the third magnetic element and the fourth magnetic element attract each other.

[0015] In one embodiment, the display device further includes a sealing layer disposed between the folded space and the electronic component layer.

[0016] In one embodiment, the display device further includes a heat dissipation layer; the heat dissipation layer is disposed between the first display layer and the first elastic layer, and / or the heat dissipation layer is disposed between the second display layer and the second elastic layer; the heat dissipation layer has a plurality of spaced heat dissipation through holes, and the heat dissipation through holes communicate with the folding space.

[0017] The folding screen support mechanism proposed in this application utilizes an air supply end within the base that cooperates with four guide grooves. When the flexible display screen unfolds, the air supply end delivers high-pressure gas into the guide grooves. The high-pressure gas pushes the sliding column portions of the four fan-shaped support members to slide synchronously from a first radial position to a second radial position along the guide grooves, causing the four fan-shaped support members to unfold outwards from their initial assembled state and separate from each other. After the sliding column portions have moved into position, the driving component engages with the sliding column portions to form a transmission connection. The driving component can drive the four sliding column portions to rotate synchronously around their own axes, thereby causing the four fan-shaped support members to flip from a first posture with the arc surface facing outwards to a second posture with the arc surface facing inwards, thus allowing the four fan-shaped support members to reassemble into a square structure. Through the above two-stage movement of first radially sliding and unfolding, and then flipping and assembling around the axis, the edge interference problem caused by directly flipping the fan-shaped support members in the initial assembled state is avoided, and a reliable conversion from a circular storage form to a square support form is achieved. In the square support configuration, the four fan-shaped support members provide flat and stable support for the bending position of the flexible display screen with their flat parts, and can apply appropriate external force to the suspended part of the functional film layer. This can effectively reduce the unevenness caused by wrinkles or collapses at the folding position, so that the flexible display screen remains flat in the unfolded state. This can reduce problems such as display screen distortion and decreased touch operation accuracy, and improve the user experience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A schematic cross-sectional view of the fan-shaped support member in a first radial position and in a first posture in one embodiment of the folding screen support mechanism provided in this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A schematic cross-sectional view of the fan-shaped support member in a second radial position and in a first posture in one embodiment of the folding screen support mechanism provided in this application; Figure 4 A schematic cross-sectional view of the fan-shaped support member in a second radial position and in a second posture in one embodiment of the folding screen support mechanism provided in this application; Figure 5 A schematic diagram of the overall structure of an embodiment of the display device provided in this application; Figure 6 A cross-sectional structural schematic diagram of a flexible display screen in a folded state in one embodiment of the display device provided in this application; Figure 7 A cross-sectional structural schematic diagram of a flexible display screen in an unfolded state in one embodiment of the display device provided in this application; Figure 8 for Figure 7 Enlarged diagram of point B in the middle.

[0020] Explanation of icon numbers: 1000. Foldable screen support mechanism; 2000, Flexible display screen; 2100, First display layer; 2200, Second display layer; 2300, First elastic layer; 2400, Second elastic layer; 2500, Electronic component layer; 2600, Folding space; 2700, Sealing layer; 2800, Heat dissipation layer; 3000, First magnetic component; 4000, Second magnetic component; 5000, Third magnetic component; 6000, Fourth magnetic component; 1. Base; 11. Air supply end; 12. Guide groove; 13. First airflow channel; 14. Second airflow channel; 15. Third airflow channel; 111. Gas supply switch; 2. Fan-shaped support component; 21. Sliding column part; 22. Limiting fan ring structure; 211. Transmission gears; 3. Driving components; 31. Actuating gear ring; 32. Turbine structure; 4. Support rod; 5. The supporting institution; 51. Bottom shell; 52. Actuating slider; 53. Inertial slider; 54. First elastic element; 55. Second elastic element; 56. Follower slider; 57. Third elastic element; 511. Pneumatic chamber; 512. Negative pressure through-hole; 5111, First sub-chamber; 5112, Second sub-chamber; 5113, Drainage gap.

[0021] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] As electronic display devices become thinner, lighter, and more flexible, foldable flexible displays are increasingly being used in various terminal devices. Currently, most mainstream flexible foldable display devices on the market use traditional hinge mechanisms to achieve the folding and unfolding functions of the flexible display, which can meet the basic functional requirements of folding and unfolding display devices.

[0026] However, traditional hinge mechanisms have significant technical defects in practical applications. When a flexible display unfolds from a folded state to a flat state, due to the limitations of the hinge's mechanical structure, the bending position of the flexible display usually exhibits obvious unevenness. This leads to problems such as distorted display images and reduced touch operation accuracy, negatively impacting the user experience.

[0027] To address the aforementioned issues, this application proposes a folding screen support mechanism that can replace the traditional hinge mechanism to achieve the folding and unfolding of the flexible display screen. When the flexible display screen is unfolded, the fan-shaped support member of the folding screen support mechanism can extend outward and flip, changing from a circular structure to a square structure. This provides a flat support for the bending position of the flexible display screen, reducing wrinkles and making the bending position of the flexible display screen flatter when unfolded. This reduces problems such as display distortion and decreased touch operation accuracy, thereby improving the user experience.

[0028] Please see Figure 1 , Figure 3 and Figure 4 and for reference Figures 5 to 8 An embodiment of this application provides a foldable screen support mechanism 1000, comprising: The base 1 is used to be embedded inside the flexible display screen 2000. The base 1 is provided with an air supply end 11 and four guide grooves 12. The air supply end 11 is connected to the guide grooves 12. The four guide grooves 12 are arranged around the circumference of the base 1 and extend radially along the base 1. Four sector-shaped support members 2 each have a sliding column portion 21; the four sliding column portions 21 are slidably fitted into the four guide grooves 12 in a one-to-one correspondence, and the sliding column portion 21 can rotate around its own axis in the guide groove 12; when the sliding column portion 21 is located in the first radial position and the sector-shaped support member 2 is in the first posture with the arc surface facing outward, the four sector-shaped support members 2 are assembled to form a circular structure; The driving component 3 is disposed on the base 1. When the air supply end 11 delivers airflow to the guide groove 12 and drives the sliding column part 21 to slide outward from the first radial position to the second radial position, the driving component 3 docks with the sliding column part 21 and forms a transmission engagement. The driving component 3 is used to drive the sliding column part 21 to rotate, so as to drive the fan-shaped support 2 to flip to the second posture with the arc surface facing inward. The four fan-shaped support 2 are assembled in the second posture to form a square structure to support the unfolded flexible display screen 2000.

[0029] In this embodiment, the flexible display screen 2000 may include multiple stacked functional film layers with flexible folding capabilities, such as a display layer, a component layer, and a structural layer for separation. The outermost layer is the display layer, which displays images and screens. Appropriate empty areas may be reserved between the functional film layers. These empty areas are located at the folding position of the flexible display screen 2000, and the folding screen support mechanism 1000 may be correspondingly positioned within these empty areas. The base 1 of the folding screen support mechanism 1000 is a fixed portion, used to abut against the suspended portion of the corresponding functional film layer in the empty area to form a basic support. This prevents the empty area from collapsing without affecting the folding and unfolding operation of the flexible display screen 2000 at this position.

[0030] Specifically, the base 1 can be configured as a cylindrical or near-cylindrical structure to facilitate embedding within the aforementioned vacant area of ​​the flexible display screen 2000. The gas supply end 11 can be located in the central region of the base 1, and is used to communicate with an external gas source to deliver high-pressure gas into the guide grooves 12. The guide grooves 12 are channel structures extending radially along the base 1, with four guide grooves 12 evenly arranged circumferentially along the base 1, and the included angle between any two adjacent guide grooves 12 is 90°. The guide grooves 12 are connected to the gas supply end 11 through an airflow channel inside the base 1, allowing the gas input from the gas supply end 11 to simultaneously enter all four guide grooves 12, driving the four sliding column portions 21 to slide radially outward synchronously.

[0031] The sector-shaped support member 2 has a sector-shaped cross-section, and four sector-shaped support members 2 are arranged circumferentially along the base 1, with the central angle of each sector-shaped support member 2 being 90°. The sliding column portion 21 of the sector-shaped support member 2 is located at one end of the sector-shaped support member 2 near the center of the base 1. The sliding column portion 21 protrudes along the thickness direction of the sector-shaped support member 2, and its central axis is parallel to the thickness direction of the sector-shaped support member 2. The sliding column portion 21 is slidably fitted in the guide groove 12, and can reciprocate along the extension direction of the guide groove 12, and can rotate around its own axis within the guide groove 12, thereby causing the sector-shaped support member 2 to rotate around the axis of the sliding column portion 21. The sector-shaped support member 2 has an arc surface, which is located at the end of the sector-shaped support member 2 away from the sliding column portion 21. When the arc surfaces of the four sector-shaped support members 2 all face outwards, the four sector-shaped support members 2 are assembled to form a circular structure; when the arc surfaces of the four sector-shaped support members 2 all face inwards, the four sector-shaped support members 2 are assembled to form a square structure.

[0032] like Figure 1 As shown, when the fan-shaped support 2 is in the first radial position, the four fan-shaped support 2 are assembled to form a circular structure. The outer diameter of the circular structure is approximately equal to the outer diameter of the base 1, so that the entire folding screen support mechanism 1000 maintains a compact circular outline in the storage state.

[0033] The driving component 3 is mounted on the base 1. The driving component 3 can be any device or structural combination with a driving rotation function. The docking and transmission cooperation between the driving component 3 and the sliding column part 21 means that when the sliding column part 21 slides outward from the first radial position to the second radial position, the sliding column part 21 moves to the position of the driving component 3 and forms a limiting transmission cooperation with the driving component 3 in the circumferential direction, so that the rotational power output by the driving component 3 can be transmitted to the sliding column part 21, thereby driving the fan-shaped support 2 to rotate around its own axis.

[0034] In this embodiment, functional modules such as the air supply end 11 and the driving component 3 that require energy to drive can be powered by a power supply component built into the base 1.

[0035] Based on the above settings, the complete working process of the folding screen support mechanism 1000 during the unfolding of the flexible display screen 2000 is as follows: like Figure 1 and Figure 6 As shown, the flexible display screen 2000 is in a folded state. When the fan-shaped support member 2 of the folding screen support mechanism 1000 is in the first posture with the arc surface facing outward, and the sliding column part 21 is located in the first radial position, the four fan-shaped support members 2 are assembled to form a circular structure, and the fan-shaped support members 2 do not contact the functional film layer in the flexible display screen 2000.

[0036] As the flexible display screen 2000 gradually unfolds from its folded state, the sensing control unit (not shown in the figure) continuously monitors the unfolded state of the flexible display screen 2000. When the sensing control unit determines that the flexible display screen 2000 is fully unfolded, it sends an unfolding signal to the air supply end 11 to trigger the air supply end 11 to open. High-pressure airflow is then delivered into the guide groove 12 through the airflow channel inside the base 1. The high-pressure airflow flows along the guide groove 12 and pushes the cylindrical surface of the sliding column part 21, causing the four sliding column parts 21 to slide synchronously along the guide groove 12 from the first radial position to the second radial position, thereby driving the four fan-shaped support members 2 to extend outward radially. Since the four fan-shaped support members 2 form a complete circular structure when assembled in the initial position, and the edges of the four fan-shaped support members 2 are in contact with each other, if the fan-shaped support members 2 are directly flipped in the initial position, the adjacent fan-shaped support members 2 will interfere with each other during rotation. Therefore, it is necessary to first slide the four fan-shaped support members 2 outward to a state where they are separated from each other and spaced a certain distance apart, so as to leave enough space for subsequent flipping operations.

[0037] like Figure 3 As shown, when the sliding column portion 21 slides to the second radial position, the four sector-shaped support members 2 move to the outer edge of the base 1 with a certain distance between them. At this time, the sector-shaped support members 2 are connected to the driving member 3 and form a limiting transmission engagement in the circumferential direction. Subsequently, the driving member 3 is activated to drive the four sliding column portions 21 to rotate synchronously around their own axes, thereby causing the four sector-shaped support members 2 to flip from the first posture with the arc surface facing outwards to the second posture with the arc surface facing inwards. After the above flipping operation is completed, as shown... Figure 4 , Figure 7 and Figure 8As shown, the four fan-shaped support members 2 are reassembled on the outer edge of the base 1 to form a square structure. At this time, the outward-facing flat part of the fan-shaped support member 2 is attached to the suspended part of the corresponding functional film layer in the flexible display screen 2000. This can provide additional support for the folded position of the flexible display screen 2000 and apply appropriate external force to the suspended part of the functional film layer, thereby reducing the unevenness caused by wrinkles or collapse at the folded position and keeping the flexible display screen 2000 flat in the unfolded state.

[0038] When the flexible display screen 2000 needs to be folded again, the air supply end 11 stops supplying air, and the drive component 3 rotates in the opposite direction, causing the fan-shaped support component 2 to flip from the second posture to the first posture. Subsequently, through external mechanical action or the reset mechanism provided in the base 1, the sliding column part 21 is reset from the second radial position to the first radial position, so that the four fan-shaped support components 2 are reassembled to form a circular structure and stored on the base 1, in preparation for the next folding operation.

[0039] Therefore, the folding screen support mechanism 1000 provided in this embodiment utilizes the air supply end 11 provided in the base 1 and the four guide grooves 12 to cooperate. When the flexible display screen 2000 is unfolded, the air supply end 11 delivers high-pressure gas into the guide grooves 12. The high-pressure gas pushes the sliding column part 21 of the four fan-shaped support members 2 to slide synchronously from the first radial position to the second radial position along the guide grooves 12, so that the four fan-shaped support members 2 unfold outward from the initial splicing state and separate from each other. After the sliding column part 21 moves into place, the driving member 3 docks with the sliding column part 21 and forms a transmission cooperation. The driving member 3 can drive the four sliding column parts 21 to rotate synchronously around their own axis, thereby driving the four fan-shaped support members 2 to flip from the first posture with the arc surface facing outward to the second posture with the arc surface facing inward, so that the four fan-shaped support members 2 can be reassembled to form a square structure. Through the aforementioned two-stage movement of radial sliding unfolding followed by axial flipping and assembly, the edge interference problem caused by directly flipping the fan-shaped support 2 in the initial assembly state is avoided, and a reliable conversion from a circular storage form to a square support form is achieved. In the square support form, the four fan-shaped support 2, with their flat portions, provide flat and stable support for the bending position of the flexible display screen 2000, and can apply appropriate external force to the suspended portion of the functional film layer. This effectively reduces unevenness caused by wrinkles or collapses at the folding position, keeping the flexible display screen 2000 flat in the unfolded state. Consequently, it reduces problems such as display distortion and decreased touch operation accuracy, improving the user experience.

[0040] In one embodiment, refer to Figure 1 , Figure 3 and Figure 4The fan-shaped support member 2 is provided with a limiting fan ring structure 22, and the central axis of the limiting fan ring structure 22 is coaxially arranged with the rotation axis of the sliding column part 21. The folding screen support mechanism 1000 also includes a support rod 4, and the sliding column part 21 is rotatably connected to the support rod 4 around its own axis; the first end of the support rod 4 is slidably fitted in the guide groove 12, and the second end of the support rod 4 is provided with a support mechanism 5, which abuts against the inner circumference of the limiting fan ring structure 22.

[0041] Specifically, the limiting fan ring structure 22 is an arc-shaped flange structure that protrudes axially from the end face of the fan-shaped support member 2. The limiting fan ring structure 22 extends circumferentially along the fan-shaped support member 2. The central axis of the limiting fan ring structure 22 is coaxially arranged with the rotation axis of the sliding column part 21, that is, the center of the circle corresponding to the limiting fan ring structure 22 is located on the axis of the sliding column part 21. The inner circumferential side of the limiting fan ring structure 22 is arranged facing the sliding column part 21.

[0042] The sliding column portion 21 passes through the support rod 4 and forms a rotational engagement with the support rod 4, allowing the sliding column portion 21 to rotate freely relative to the support rod 4 around its own axis, while the support rod 4 does not rotate with the rotation of the sliding column portion 21. The first end of the support rod 4 extends into the guide groove 12 and forms a sliding engagement with the guide groove 12, allowing the support rod 4 to slide back and forth along the extension direction of the guide groove 12. Through the above arrangement, the sliding column portion 21 can rotate relative to the support rod 4, and the sliding column portion 21 and the support rod 4 can slide together along the guide groove 12. The supporting mechanism 5 is disposed at the second end of the support rod 4 and abuts against the inner circumference of the limiting fan ring structure 22.

[0043] When the fan-shaped support 2 extends radially outward, the support rod 4 slides outward along the guide groove 12 synchronously with the sliding column part 21. The supporting mechanism 5 moves synchronously with the support rod 4 and always abuts against the inner circumference of the limiting fan ring structure 22. During the outward extension of the fan-shaped support 2, the fan-shaped support 2 may have a slight tendency to deflect due to airflow disturbance or uneven friction. To address this issue, since the support rod 4 is limited by the guide groove 12 and cannot rotate around the axis of the sliding column part 21, the supporting mechanism 5 can maintain a fixed circumferential orientation relative to the base 1. Based on this, the supporting mechanism 5, abutting against the inner circumference of the limiting fan ring structure 22, can generate a certain abutting force on the limiting fan ring structure 22. This abutting force can form a resistance torque against the deflection of the fan-shaped support 2. This resistance torque is sufficient to suppress the slight deflection tendency caused by external disturbance, thereby preventing the fan-shaped support 2 from deflecting autonomously during radial extension. Furthermore, the supporting mechanism 5 and the limiting fan ring structure 22 are only in a contact relationship without a locking structure. When the driving member 3 starts and drives the sliding column part 21 to rotate, the driving torque output by the driving member 3 is greater than the resistance torque generated by the contact cooperation mentioned above. Therefore, the fan-shaped support member 2 can be rotated normally under the drive of the driving member 3.

[0044] When the driving component 3 drives the sliding column part 21 to rotate around its own axis to cause the fan-shaped support 2 to flip from the first posture to the second posture, the sliding column part 21 rotates relative to the support rod 4, the support rod 4 remains stationary, and the supporting mechanism 5 remains stationary with the support rod 4. In the initial stage of flipping, the supporting mechanism 5 still abuts against the inner circumference of the limiting fan ring structure 22. At this time, the supporting mechanism 5 can provide initial guidance for the flipping movement of the fan-shaped support 2 and suppress the slight shaking that may occur when the flipping starts. As the flipping angle increases, the limiting fan ring structure 22 gradually rotates until its inner circumference separates from the supporting mechanism 5. At this time, the supporting mechanism 5 no longer constrains the flipping movement of the fan-shaped support 2. After the fan-shaped support 2 completes the flipping and is assembled to form a square structure, there is no abutting relationship between the supporting mechanism 5 and the limiting fan ring structure 22.

[0045] In this embodiment, the sliding fit between the first end of the support rod 4 and the guide groove 12, and the abutting fit between the supporting mechanism 5 and the inner circumference of the limiting fan ring structure 22 during the extension process and the initial stage of the flip, together constrain the movement of the fan-shaped support member 2. During the radial extension process, the circumferential limiting of the support rod 4 by the guide groove 12 and the abutting action of the supporting mechanism 5 on the limiting fan ring structure 22 work together to prevent the fan-shaped support member 2 from deflecting autonomously due to external disturbances, thus ensuring the positional stability of the fan-shaped support member 2 during the extension process. In the initial stage of the flipping movement of the fan-shaped support member 2, the supporting mechanism 5 can provide a certain guiding effect for the limiting fan ring structure 22, which can improve the stability of the movement of the fan-shaped support member 2 in the initial stage of the flip. Through the above settings, the folding screen support mechanism 1000 can maintain the stability of the fan-shaped support member 2 during the extension process and ensure the smooth operation of the flipping operation of the fan-shaped support member 2 without the need for a complex locking mechanism.

[0046] In one embodiment, refer to Figure 1 and Figure 2 The supporting mechanism 5 includes a base shell 51, an actuating slider 52, an inertial slider 53, a first elastic element 54, and a second elastic element 55. The bottom shell 51 is fan-shaped, and its central axis is coaxial with the rotation axis of the sliding column part 21. The outer periphery of the bottom shell 51 is fitted with the inner periphery of the limiting fan-shaped ring structure 22. A pneumatic chamber 511 is provided on the inner periphery of the bottom shell 51, and a negative pressure through hole 512 is provided on the bottom wall of the pneumatic chamber 511. The negative pressure through hole 512 communicates with the outer periphery of the bottom shell 51. The actuating slider 52 is disposed at the second end of the support rod 4. The actuating slider 52 slides radially in the pneumatic chamber 511, and a first sub-chamber 5111 is formed between the actuating slider 52 and the bottom wall of the pneumatic chamber 511. A drainage gap 5113 exists between 52 and the side wall of the pneumatic chamber 511; the inertial slider 53 is radially slidably fitted in the pneumatic chamber 511, and the inertial slider 53 is located on the side of the actuating slider 52 facing away from the negative pressure through hole 512, forming a second sub-chamber 5112 between the inertial slider 53 and the actuating slider 52; the two ends of the first elastic member 54 are respectively connected to the bottom wall of the pneumatic chamber 511 and the actuating slider 52, and the two ends of the second elastic member 55 are respectively connected to the actuating slider 52 and the inertial slider 53, and the elastic modulus of the second elastic member 55 is less than the elastic modulus of the first elastic member 54; When the radial distance between the inertial slider 53 and the actuation slider 52 increases, the inertial slider 53 is used to draw the gas in the first sub-chamber 5111 through the exhaust gap 5113 to the second sub-chamber 5112 so that the first sub-chamber 5111 is kept under negative pressure.

[0047] In this embodiment, when the flexible display screen 2000 unfolds and the gas supply end 11 delivers high-pressure gas into the guide groove 12, the high-pressure gas pushes the sliding column part 21 to slide along the guide groove 12 from the first radial position to the second radial position. During this process, the support rod 4 slides outward synchronously with the sliding column part 21, and the actuation slider 52 disposed at the second end of the support rod 4 moves outward synchronously with the support rod 4. Due to its own mass inertia, the inertial slider 53 lags behind the actuation slider 52 in the radial inward direction, which increases the radial distance between the inertial slider 53 and the actuation slider 52. The volume of the second sub-chamber 5112 will increase accordingly, and the internal air pressure of the second sub-chamber 5112 will decrease, forming a negative pressure suction effect. At this time, the gas in the first sub-chamber 5111 will be drawn into the second sub-chamber 5112 through the exhaust gap 5113, which reduces the air pressure in the first sub-chamber 5111 and forms a negative pressure state. Since the negative pressure through hole 512 connects the first sub-chamber 5111 with the outer periphery of the bottom shell 51, the negative pressure state of the first sub-chamber 5111 can act on the contact interface between the outer periphery of the bottom shell 51 and the inner periphery of the limiting fan ring structure 22 through the negative pressure through hole 512. Under this negative pressure, the outer periphery of the bottom shell 51 will be adsorbed onto the inner periphery of the limiting fan ring structure 22. This can increase the positive pressure and friction between the supporting mechanism 5 and the limiting fan ring structure 22, thereby effectively suppressing the autonomous deflection of the fan-shaped support 2 caused by airflow disturbance or uneven friction during the rapid outward extension of the fan-shaped support 2, and further improving the posture stability of the fan-shaped support 2 during the extension process.

[0048] In the above process, since the elastic modulus of the second elastic element 55 is less than that of the first elastic element 54, based on the difference in elastic modulus between the second elastic element 55 and the first elastic element 54, when the actuating slider 52 pushes the bottom shell 51 outward by compressing the first elastic element 54, the elastic deformation of the second elastic element 55 is greater than that of the first elastic element 54. This ensures the asynchronous movement between the inertial slider 53 and the bottom shell 51, that is, it ensures that the distance lag between the inertial slider 53 and the actuating slider 52 is greater than that between the bottom shell 51 and the actuating slider 52. This ensures that the volume of the second sub-chamber 5112 can be effectively increased and sufficient suction force can be generated, thereby smoothly drawing the gas in the first sub-chamber 5111 into the second sub-chamber 5112, so that the first sub-chamber 5111 forms a stable negative pressure state to maintain stable adsorption of the limiting fan ring structure 22.

[0049] After the extension action is completed and the sliding column 21 stops sliding, the inertial slider 53 gradually returns to its initial relative position with the actuating slider 52 under the reset force of the second elastic element 55. The volume of the second sub-chamber 5112 decreases accordingly, and the gas in the second sub-chamber 5112 will flow back to the first sub-chamber 5111 through the drain gap 5113. At this time, the negative pressure state of the first sub-chamber 5111 weakens or disappears, and the adsorption between the outer periphery of the bottom shell 51 and the inner periphery of the limiting fan ring structure 22 is released, and the two return to a normal contact state.

[0050] Based on the above configuration, the inertia generated when the sliding column 21 slides along the guide groove 12 can be used to make the inertial slider 53 lag behind the actuating slider 52. Thus, without the need for external control signals or additional power sources, a negative pressure adsorption effect adapted to the extension speed can be automatically generated during the rapid extension of the fan-shaped support 2, so as to effectively suppress the autonomous deflection of the fan-shaped support 2 during the extension process. When the extension action is completed, the negative pressure adsorption effect can be automatically released, without generating additional resistance to the subsequent flipping operation of the fan-shaped support 2.

[0051] In one embodiment, refer to Figure 1 and Figure 2 The supporting mechanism 5 also includes a follower slider 56 and a third elastic element 57; one end of the third elastic element 57 is connected to the side wall of the air pressure chamber 511, and the other end of the third elastic element 57 is connected to the follower slider 56; the follower slider 56 maintains contact with the actuating slider 52 and the inertial slider 53 under the elastic force provided by the third elastic element 57. The bottom wall of the pneumatic chamber 511, the actuating slider 52 and the follower slider 56 enclose the first sub-chamber 5111, the actuating slider 52, the inertial slider 53 and the follower slider 56 enclose the second sub-chamber 5112, and the gap between the actuating slider 52 and the follower slider 56 constitutes the drainage gap 5113.

[0052] Specifically, when the actuated slider 52 and the inertial slider 53 extend radially outward under the drive of the support rod 4, the side of the actuated slider 52 and the side of the inertial slider 53 will have a change in the distance relative to the side wall of the pneumatic chamber 511. This may cause a change in the size of the exhaust gap 5113, thereby affecting the flow of air between the first sub-chamber 5111 and the second sub-chamber 5112 and the maintenance of the negative pressure state in the first sub-chamber 5111.

[0053] Based on the above problems, in this embodiment, a follower slider 56 and a third elastic element 57 are added between the side of the actuating slider 52, the side of the inertial slider 53 and the side wall of the pneumatic chamber 511. The area formed by the bottom wall of the pneumatic chamber 511, the actuating slider 52 and the follower slider 56 is used as the first sub-chamber 5111. The area formed by the actuating slider 52, the inertial slider 53 and the follower slider 56 is used as the second sub-chamber 5112. The gap between the side of the actuating slider 52 and the follower slider 56 is used as the drainage gap 5113. Under the elastic force provided by the third elastic element 57, the follower slider 56 can maintain a stable contact with the side of the actuating slider 52 and the side of the inertial slider 53. When the side of the actuating slider 52 and the side of the inertial slider 53 change position relative to the side wall of the air pressure chamber 511 during the radial extension process, the follower slider 56 can move accordingly to adapt to this position change. In this way, the gap between the actuating slider 52 and the follower slider 56 can be kept relatively constant, so that the cross-sectional area of ​​the discharge gap 5113 does not change significantly with the sliding position of the actuating slider 52. This ensures that the gas in the first sub-chamber 5111 can be stably drawn into the second sub-chamber 5112 through the relatively constant discharge gap 5113, which improves the stability and consistency of the negative pressure suction process. This allows the first sub-chamber 5111 to maintain a stable negative pressure state during the extension process, so as to form a stable suction effect on the limiting fan ring structure 22.

[0054] In one embodiment, refer to Figure 1 , Figure 3 and Figure 4 The driving component 3 includes an actuating gear ring 31, which is rotatably connected to the base 1; the sliding column part 21 is configured as a transmission gear 211, which is located within the enclosing area of ​​the actuating gear ring 31, and the transmission gear 211 meshes with the actuating gear ring 31 at a second radial position; during the rotation of the actuating gear ring 31, it simultaneously drives four transmission gears 211 to rotate around their own axis.

[0055] In this embodiment, the actuating gear ring 31 has an annular structure with teeth on its inner ring. The sliding column portion 21 is configured as a transmission gear 211, and all four transmission gears 211 are located within the enclosing area of ​​the actuating gear ring 31. During the process of the sliding column portion 21 sliding from the first radial position to the second radial position driven by airflow, the transmission gears 211 gradually approach the actuating gear ring 31 radially outward until the transmission gears 211 mesh with the teeth on the inner ring of the actuating gear ring 31. After the transmission gears 211 and the actuating gear ring 31 have meshed, the actuating gear ring 31 can be driven to rotate by a corresponding driving device or an external power source, so as to simultaneously drive the four transmission gears 211 to rotate around their own axes through meshing transmission, thereby driving the four sector-shaped support members 2 to rotate synchronously.

[0056] In this embodiment, by setting the driving component 3 as an actuating gear ring 31, the four transmission gears 211 can be driven to rotate synchronously based on meshing transmission, thereby realizing the synchronous flipping of the four sector support components 2, which can improve the consistency of the flipping action and the splicing accuracy of the four sector support components 2 after flipping.

[0057] In one embodiment, refer to Figure 1 and Figure 2 A turbine structure 32 is arranged around the outer periphery of the actuating gear ring 31; a third airflow channel 15 is provided in the base 1, one end of the third airflow channel 15 is connected to the guide groove 12, and the other end of the third airflow channel 15 is connected to the turbine structure 32. The airflow supplied from the air supply end 11 into the guide groove 12 is delivered to the turbine structure 32 through the third airflow channel 15, so as to drive the actuation gear ring 31 to rotate through the airflow action.

[0058] In this embodiment, the turbine structure 32 refers to a structure capable of converting the kinetic energy of airflow into rotational mechanical energy, specifically including bladed turbines, wind turbines, and other structural forms. A third airflow channel 15 is provided within the base 1. One end of the third airflow channel 15 is connected to the guide groove 12, and the other end of the third airflow channel 15 extends into the space where the turbine structure 32 is located. The airflow supplied from the air supply end 11 to the guide groove 12 can be transported to the turbine structure 32 through the third airflow channel 15 to drive the actuating gear ring 31 to rotate.

[0059] In this embodiment, by setting a third airflow channel 15 to connect the guide groove 12 and the turbine structure 32, the airflow input from the air supply end 11 can be used to drive the sliding column part 21 to slide radially, and at the same time, it can also be used to drive the actuation gear ring 31 to rotate. That is, the same air source is used to achieve the sliding drive of the sliding column part 21 and the rotation drive of the actuation gear ring 31, without the need to set an additional power source or drive device for the actuation gear ring 31. Thus, while ensuring that the preset functions are realized normally, the overall structure of the folding screen support mechanism 1000 is simplified and the system energy consumption is reduced.

[0060] Furthermore, the first connecting port between the air supply end 11 and the guide groove 12 can be located at one end of the guide groove 12, and the second connecting port between the third airflow channel 15 and the guide groove 12 can be located at the other end of the guide groove 12. The second connecting port is located radially outside the first connecting port. In the initial state, the sliding column part 21 is in the first radial position, at which time the sliding column part 21 is located between the first connecting port and the second connecting port. When the air supply end 11 starts to supply airflow to the guide groove 12, the sliding column part 21 slides along the guide groove 12 under the drive of the airflow and gradually approaches the second connecting port. During this process, due to the blocking effect of the sliding column part 21, the airflow supplied from the first connecting port to the guide groove 12 cannot reach the second connecting port. When the sliding column part 21 slides to the second radial position, the sliding column part 21 has completely passed the second connecting port. At this time, the airflow continuously supplied by the air supply end 11 can be supplied to the second connecting port through the guide groove 12, and then transported to the actuating gear ring 31 through the third airflow channel 15 to drive the actuating gear ring 31. Based on the above settings, the timing control of the airflow driving process can be realized, so that the fan-shaped support 2 can automatically switch to the flipping motion state after extending radially outward to the preset position. During this process, the air supply end 11 only needs to maintain the air supply state without human intervention or switching, thereby improving the smoothness of the action connection of the fan-shaped support 2 and the automation level of the system.

[0061] In one embodiment, refer to Figure 1 and Figure 5 The gas supply end 11 includes a gas supply switch 111, a first airflow channel 13, and four second airflow channels 14. The first airflow channel 13 is disposed through the base 1, and the second airflow channels 14 are disposed inside the base 1. One end of the four second airflow channels 14 is connected to the first airflow channel 13, and the other end of the four second airflow channels 14 is connected to four guide grooves 12 in a corresponding manner. The gas supply switch 111 is disposed at one end of the first airflow channel 13. When the gas supply switch 111 is in the open state, it supplies external gas into the first airflow channel 13.

[0062] In this embodiment, the gas supply switch 111 is used to control whether external gas enters the first airflow channel 13. The gas supply switch 111 may include a micro air pump, an external gas source interface, or other structural forms, as long as it can provide gas with a stable pressure. The first airflow channel 13 is disposed through the base 1, and the gas supply switch 111 is disposed at one end opening of the first airflow channel 13. The other end opening of the first airflow channel 13 can be connected to the area in the flexible display screen 2000 used to accommodate the folding screen support mechanism 1000. Four second airflow channels 14 are disposed inside the base 1 and are evenly distributed circumferentially. The four second airflow channels 14 connect the first airflow channel 13 to the four guide grooves 12 one by one. When the gas supply switch 111 is in the open state, it supplies external gas into the first airflow channel 13. The external gas is diverted through the first airflow channel 13. A portion of the gas enters the four guide grooves 12 through the four second airflow channels 14, thereby driving the four sliding column parts 21 to slide along the guide grooves 12, and thus driving the four fan-shaped support members 2 to extend outward synchronously. The other portion of the gas flows out from the other end opening of the first airflow channel 13 to dissipate heat from the internal space of the flexible display screen 2000.

[0063] In this embodiment, by setting a first airflow channel 13 and four second airflow channels 14, the airflow input from the air supply end 11 can be evenly supplied into the four guide grooves 12 to ensure the synchronous sliding of the four sliding column parts 21, thereby improving the consistency of the extension action of the four fan-shaped support members 2; at the same time, the opening at the other end of the first airflow channel 13 can discharge excess airflow to form a heat dissipation effect on the interior of the flexible display screen 2000, avoid heat accumulation, and ensure the normal operation of the display device.

[0064] This application also provides a display device; please refer to [link / reference]. Figures 5 to 8 and supplementary reference Figures 1 to 4 The display device includes a flexible display screen 2000 and at least two folding screen support mechanisms 1000 as described in any of the above embodiments; The flexible display screen 2000 includes a first display layer 2100, a second display layer 2200, a first elastic layer 2300, a second elastic layer 2400, and at least two electronic component layers 2500; the at least two electronic component layers 2500 are sandwiched between the first elastic layer 2300 and the second elastic layer 2400, and the gap between two adjacent electronic component layers 2500 forms a folding space 2600; the first display layer 2100 is attached to the side of the first elastic layer 2300 facing away from the electronic component layer 2500, and the second display layer 2200 is attached to the side of the second elastic layer 2400 facing away from the electronic component layer 2500; At least two folding screen support mechanisms 1000 are arranged at intervals in the folding space 2600; the four fan-shaped support members 2 of each folding screen support mechanism 1000 are used to assemble into a square structure to support the first elastic layer 2300 and the second elastic layer 2400 after unfolding.

[0065] In this embodiment, the display device may include foldable terminal devices with display functions such as mobile phones and tablet computers. The flexible display screen 2000 is the core display component of the display device, and it, together with the foldable screen support mechanism 1000, constitutes the main body of the display device.

[0066] The first display layer 2100 and the second display layer 2200 serve as the display interfaces on both sides of the flexible display screen 2000, enabling double-sided display functionality. The electronic component layer 2500 may include a driving circuit layer, a touch sensing layer, etc. The first elastic layer 2300 and the second elastic layer 2400 may be made of elastic materials such as polyimide and silicone, serving as the upper and lower substrates of the flexible display screen 2000, respectively. The first elastic layer 2300 and the second elastic layer 2400 act as protective carriers for the electronic component layer 2500, utilizing their own elastic deformation capabilities to buffer the mechanical stress generated during folding and unfolding, preventing the corresponding components and modules in the electronic component layer 2500 from breaking or experiencing poor contact due to bending.

[0067] Each electronic component layer 2500 is arranged at intervals, and the interval between two adjacent electronic component layers 2500 forms a folding space 2600. The folding space 2600 is located at the preset folding position of the flexible display screen 2000 to provide an installation and movement area for the folding screen support mechanism 1000. The size of the folding space 2600 matches the shape of the folding screen support mechanism 1000, which can not only meet the deformation requirements of the flexible display screen 2000 when folded, but also provide sufficient movement space for the folding screen support mechanism 1000 to be stored and unfolded.

[0068] The display device includes at least two folding screen support mechanisms 1000, which are spaced apart within a folding space 2600. The base 1 of each folding screen support mechanism 1000 is fixed to the inner wall of the folding space 2600, specifically the inner sidewall of the first elastic layer 2300 and the inner sidewall of the second elastic layer 2400. The four fan-shaped support members 2 of each folding screen support mechanism 1000 can switch from a circular structure to a square structure in the unfolded state to provide additional support for the unfolded first elastic layer 2300 and second elastic layer 2400. Figure 6 As shown, when the flexible display screen 2000 is in a folded state, the fan-shaped support 2 is housed on the base 1 and does not contact the first elastic layer 2300 or the second elastic layer 2400 to avoid interference; Figure 7 and Figure 8 As shown, when the flexible display screen 2000 is unfolded, the fan-shaped support members 2 of each folding screen support mechanism 1000 extend and flip simultaneously to form a square structure. At this time, the flat part of the fan-shaped support member 2 can provide additional rigid support for the first elastic layer 2300 and the second elastic layer 2400, thereby improving the flatness of the flexible display screen 2000 after unfolding.

[0069] In this embodiment, the folding space 2600 formed between the electronic component layers 2500 serves as the installation area for the folding screen support mechanism 1000. This avoids interference between the folding screen support mechanism 1000 and the electronic component layers 2500, and ensures the compactness of the internal layout of the flexible display screen 2000. Furthermore, the multiple folding screen support mechanisms 1000 arranged at intervals can achieve an orderly layout within the folding space 2600, forming uniform multi-point rigid support when the flexible display screen 2000 is unfolded, ensuring the flatness of the unfolded flexible display screen 2000. Simultaneously, the first display layer 2100 and the second display layer 2200 are respectively disposed on the side of the first elastic layer 2300 and the second elastic layer 2400 facing away from the electronic component layers 2500, enabling the flexible display screen 2000 to have a double-sided display function, meeting more diverse display needs.

[0070] In one embodiment, refer to Figure 6 and Figure 7 The display device also includes a first magnetic element 3000 and a second magnetic element 4000. The first magnetic element 3000 and the second magnetic element 4000 are disposed on the first display layer 2100 and are symmetrically arranged about the folding space 2600. When the flexible display screen 2000 is folded so that the first display layer 2100 faces inward and the second display layer 2200 faces outward, the first magnetic element 3000 and the second magnetic element 4000 attract each other.

[0071] When the flexible display screen 2000 is folded so that the first display layer 2100 faces inward and the second display layer 2200 faces outward, the second display layer 2200 serves as the display surface. At this time, the first magnetic component 3000 and the second magnetic component 4000 attract each other, which can make the flexible display screen 2000 stably maintain its current folded state.

[0072] In one embodiment, refer to Figure 6 and Figure 7The display device also includes a third magnetic element 5000 and a fourth magnetic element 6000, which are disposed on the second display layer 2200 and are symmetrically arranged about the folding space 2600. When the flexible display screen 2000 is folded so that the first display layer 2100 faces outward and the second display layer 2200 faces inward, the third magnetic element 5000 and the fourth magnetic element 6000 attract each other.

[0073] like Figure 6 As shown, when the flexible display screen 2000 is folded so that the first display layer 2100 faces outward and the second display layer 2200 faces inward, the first display layer 2100 serves as the display surface. At this time, the third magnetic component 5000 and the fourth magnetic component 6000 attract each other, which can make the flexible display screen 2000 stably maintain its current folded state.

[0074] In one embodiment, refer to Figures 6 to 8 The display device also includes a sealing layer 2700, which is disposed between the folding space 2600 and the electronic component layer 2500. The sealing layer 2700 can enclose the folding space 2600, preventing external factors from adversely affecting the normal operation of the folding screen support mechanism 1000 within the folding space 2600, and also preventing the folding screen support mechanism 1000 from interfering with the electronic component layer 2500.

[0075] In one embodiment, refer to Figures 6 to 8 The display device also includes a heat dissipation layer 2800; the heat dissipation layer 2800 is disposed between the first display layer 2100 and the first elastic layer 2300, and / or the heat dissipation layer 2800 is disposed between the second display layer 2200 and the second elastic layer 2400; the heat dissipation layer 2800 is provided with a plurality of spaced heat dissipation through holes, which are connected to the folding space 2600.

[0076] When the flexible display screen 2000 unfolds and the air supply end 11 supplies air to the folding screen support mechanism 1000, part of the airflow is discharged into the folding space 2600 through the other end opening of the first airflow channel 13. This part of the airflow can flow through the heat dissipation holes through the heat dissipation layer 2800 to dissipate heat from the first display layer 2100 and the second display layer 2200. In the folded state, the heat generated by each functional structural layer during operation can also be transferred to the folding space 2600 through the heat dissipation holes to avoid heat accumulation between the functional structural layers.

[0077] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A folding screen support mechanism, characterized in that, The foldable screen support mechanism includes: A base for embedding inside a flexible display screen; the base is provided with an air supply end and four guide grooves, the air supply end is connected to the guide grooves, the four guide grooves are arranged circumferentially along the base, and the four guide grooves extend radially along the base. Four fan-shaped support members, each having a sliding column portion; the four sliding column portions are slidably fitted into the four guide grooves one-to-one, and the sliding column portions can rotate around their own axis in the guide grooves; when the sliding column portion is located in the first radial position and the fan-shaped support member is in the first posture with the arc surface facing outward, the four fan-shaped support members are assembled to form a circular structure. A driving component is disposed on the base; when the air supply end delivers airflow to the guide groove and drives the sliding column to slide outward from the first radial position to the second radial position, the driving component engages with the sliding column and forms a transmission cooperation; the driving component is used to drive the sliding column to rotate, so as to drive the fan-shaped support to flip to the second posture with the arc surface facing inward; the four fan-shaped support members are assembled in the second posture to form a square structure to support the unfolded flexible display screen.

2. The folding screen support mechanism according to claim 1, characterized in that, The fan-shaped support member is provided with a limiting fan ring structure, and the central axis of the limiting fan ring structure is coaxial with the rotation axis of the sliding column part. The folding screen support mechanism also includes a support rod, and the sliding column is rotatably connected to the support rod around its own axis; the first end of the support rod is slidably fitted in the guide groove, and the second end of the support rod is provided with a support mechanism, which abuts against the inner circumference of the limiting fan ring structure.

3. The folding screen support mechanism according to claim 2, characterized in that, The supporting mechanism includes a base shell, an actuating slider, an inertial slider, a first elastic element, and a second elastic element; The bottom shell is fan-shaped, with its central axis coaxial with the rotation axis of the sliding column. The outer periphery of the bottom shell fits against the inner periphery of the limiting fan-shaped ring structure. A pneumatic chamber is provided on the inner periphery of the bottom shell, and a negative pressure through-hole is provided on the bottom wall of the pneumatic chamber, communicating with the outer periphery of the bottom shell. An actuating slider is located at the second end of the support rod and slides radially within the pneumatic chamber. A first sub-chamber is formed between the actuating slider and the bottom wall of the pneumatic chamber. A drainage gap exists between the slider and the side wall of the pneumatic chamber; the inertial slider slides radially within the pneumatic chamber, and is located on the side of the actuating slider facing away from the negative pressure through hole, forming a second sub-chamber between the inertial slider and the actuating slider; the two ends of the first elastic element are respectively connected to the bottom wall of the pneumatic chamber and the actuating slider, and the two ends of the second elastic element are respectively connected to the actuating slider and the inertial slider, and the elastic modulus of the second elastic element is less than that of the first elastic element; When the radial distance between the inertial slider and the actuating slider increases, the inertial slider is used to draw the gas in the first sub-chamber to the second sub-chamber through the drainage gap, so as to keep the first sub-chamber in a negative pressure state.

4. The folding screen support mechanism according to claim 3, characterized in that, The supporting mechanism further includes a follower slider and a third elastic element; one end of the third elastic element is connected to the side wall of the pneumatic chamber, and the other end of the third elastic element is connected to the follower slider; the follower slider maintains contact with the actuating slider and the inertial slider under the elastic force provided by the third elastic element. The bottom wall of the pneumatic chamber, the actuating slider, and the follower slider enclose the first sub-chamber, and the actuating slider, the inertial slider, and the follower slider enclose the second sub-chamber. The gap between the actuating slider and the follower slider constitutes the drainage gap.

5. The folding screen support mechanism according to claim 1, characterized in that, The driving component includes an actuating gear ring rotatably connected to the base; the sliding column portion is configured as a transmission gear, which is located within the enclosing area of ​​the actuating gear ring and meshes with the actuating gear ring at the second radial position; during rotation, the actuating gear ring simultaneously drives four transmission gears to rotate around its own axis.

6. The folding screen support mechanism according to claim 5, characterized in that, A turbine structure is arranged around the outer periphery of the actuating gear ring; a third airflow channel is provided in the base, one end of the third airflow channel is connected to the guide groove, and the other end of the third airflow channel is connected to the turbine structure; The airflow supplied to the guide groove by the air supply end is delivered to the turbine structure through the third airflow channel, so as to drive the actuation gear ring to rotate through the airflow action.

7. The folding screen support mechanism according to any one of claims 1 to 6, characterized in that, The gas supply end includes a gas supply switch, a first airflow channel, and four second airflow channels; the first airflow channel is disposed through the base, the second airflow channels are disposed inside the base, one end of each of the four second airflow channels is connected to the first airflow channel, and the other end of each of the four second airflow channels is connected to one of the four guide grooves; the gas supply switch is disposed at one end of the first airflow channel, and when the gas supply switch is in the open state, external gas is supplied into the first airflow channel.

8. A display device, characterized in that, The display device includes a flexible display screen and at least two folding screen support mechanisms as described in any one of claims 1 to 7; The flexible display screen includes a first display layer, a second display layer, a first elastic layer, a second elastic layer, and at least two electronic component layers; the at least two electronic component layers are sandwiched between the first elastic layer and the second elastic layer, and the gap between two adjacent electronic component layers forms a folding space; the first display layer is attached to the side of the first elastic layer opposite to the electronic component layer, and the second display layer is attached to the side of the second elastic layer opposite to the electronic component layer. At least two of the folding screen support mechanisms are arranged at intervals in the folding space; the four fan-shaped support members of each folding screen support mechanism are used to assemble into a square structure to support the first elastic layer and the second elastic layer after unfolding.

9. The display device according to claim 8, characterized in that, The display device further includes a first magnetic element and a second magnetic element, which are disposed on the first display layer and are symmetrically arranged about the folding space. When the flexible display screen is folded so that the first display layer faces inward and the second display layer faces outward, the first magnetic element and the second magnetic element attract each other. And / or, the display device further includes a third magnetic element and a fourth magnetic element, the third magnetic element and the fourth magnetic element being disposed on the second display layer, and the third magnetic element and the fourth magnetic element being symmetrically arranged about the folding space; when the flexible display screen is folded to the point where the first display layer faces outward and the second display layer faces inward, the third magnetic element and the fourth magnetic element attract each other; And / or, the display device further includes a sealing layer disposed between the folded space and the electronic component layer.

10. The display device according to claim 8, characterized in that, The display device further includes a heat dissipation layer; the heat dissipation layer is disposed between the first display layer and the first elastic layer, and / or the heat dissipation layer is disposed between the second display layer and the second elastic layer; the heat dissipation layer has a plurality of spaced heat dissipation through holes, and the heat dissipation through holes are connected to the folding space.

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