Display device

Abstract

The application provides a display device, which comprises a housing, the housing having a rolling cavity; a sliding rolling shaft, the sliding rolling shaft extending along a first direction, the sliding rolling shaft being rotatably arranged in the rolling cavity around an axis of the sliding rolling shaft; a flexible module, the flexible module being rollably arranged in the sliding rolling shaft along a second direction and having an extended state and a rolled state, the first direction being perpendicular to the second direction; and a flattening piece, the flattening piece being rotatably arranged in the housing around an axis of the flattening piece, the axis of the flattening piece extending along the first direction, the flattening piece being located at a side of the sliding rolling shaft away from an extended section of the flexible module; wherein when the flexible module is switched between the extended state and the rolled state, the sliding rolling shaft rotates around the axis of the sliding rolling shaft, the flexible module is extended or rolled in the sliding rolling shaft along the second direction, and the flattening piece can rotate around the axis of the flattening piece and be attached to the extended section of the flexible module. The problem of low flatness of a flexible sliding rolling screen in the related art is solved.

Description

Technical Field

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

[0002] With the development of display technology, flexible display modules that can be rolled up have emerged. Applying these flexible display modules to display devices results in flexible rollable screens. Compared to traditional displays, flexible rollable screens can change the display area by utilizing the bendability and thinness of flexible display modules.

[0003] In related technologies, flexible rollable screens typically involve rolling a flexible display module onto a scroll shaft. By extending or retracting the flexible display module onto the scroll shaft, its display area can be changed. However, current flexible rollable screens exhibit fatigue-induced "bulges" in the rolled area after rolling to a certain extent, affecting the flatness after unfolding and significantly reducing the user's visual and tactile experience. Summary of the Invention

[0004] In view of this, embodiments of the present invention aim to provide a display device to solve the problem of low flatness of flexible rollable screens in related technologies.

[0005] The present invention provides a display device comprising: a housing having a winding cavity; a sliding shaft extending along a first direction and rotatably disposed within the winding cavity about its own axis; a flexible module being wound up along a second direction and having an extended state and a wound state, the first and second directions being perpendicular to each other; and a flattening member rotatably disposed on the housing about its own axis, the axis of the flattening member extending along the first direction, the flattening member being located on the side of the sliding shaft away from the extended section of the flexible module; wherein, when the flexible module switches between the extended state and the wound state, the sliding shaft rotates about its own axis, the flexible module extends or is wound up along the sliding shaft in the second direction, and the flattening member is rotatable about its own axis and fits against the extended section of the flexible module.

[0006] In one embodiment, there are at least two flattening members, which are located on both sides of the extended section of the flexible module. When the flexible module switches between the rolled-up state and the extended state, the at least two flattening members rotate about their own axes.

[0007] In one embodiment, the end of the housing has an opening through which the flexible module extends or retracts onto the slide roller, and at least two flattening members are disposed at the opening.

[0008] In one embodiment, when the flexible module switches from a wound state to an extended state, the flexible module drives the flattening component to rotate around its own axis.

[0009] In one embodiment, the display device further includes a driving member that is drivingly connected to the flattening member to drive the flattening member to rotate about its own axis.

[0010] In one embodiment, when the flexible module switches from an extended state to a retracted state, the rotation direction of the flattening member is the same as the rotation direction of the sliding shaft.

[0011] In one embodiment, a cleaning part is provided on the outer periphery of the flattening part, and the cleaning part is made of a fluffy material or an elastic material.

[0012] In one embodiment, the end of the flexible module near the sliding shaft has a connecting portion for connecting the operating component, the contact line between the flattening component and the flexible module is a flattening line, and the surface of the flexible module away from the connecting portion is coplanar with the flattening line.

[0013] In one embodiment, the flattening element is a flattening shaft, and the ratio between the diameter of the flattening shaft and the thickness of the housing is greater than or equal to 0.5 and less than or equal to 1.

[0014] In one embodiment, the stiffness of the flattening element is the same as the stiffness of the sliding roller.

[0015] According to the technical solution of this invention, the display device includes a housing, a sliding shaft, a flexible module, and a flattening component. When the operator extends or retracts the flexible module onto the sliding shaft along a second direction, switching between the extended and retracted states, the sliding shaft can rotate about an axis extending along a first direction, and the flattening component can rotate about its own axis. At this time, the flattening component is located on the side of the sliding shaft away from the extended section of the flexible module, and it can fit against the extended section of the flexible module. The flattening component provides a downward flattening force to the flexible module during movement, pressing down and flattening any bulges on the flexible module, thereby improving the flatness of the flexible module and enhancing the display and tactile effects of the display device. Attached Figure Description

[0016] Figure 1 The diagram shown is a structural schematic of a display device in related technologies.

[0017] Figure 2 The diagram shown is a structural schematic of a display device provided in an embodiment of the present invention.

[0018] Figure 3 The diagram shown is a structural schematic of a display device provided in another embodiment of the present invention.

[0019] Figure 4 The diagram shown is a structural schematic of a display device provided in another embodiment of the present invention.

[0020] Figure 5 As shown Figure 4 A magnified view of a portion of point A in the middle.

[0021] Figure 6 The diagram shown is a structural schematic of a display device provided in another embodiment of the present invention.

[0022] Figure 7 As shown Figure 6 A magnified view of a section at point B in the middle.

[0023] Figure 8 The diagram shown is a structural schematic of a display device provided in another embodiment of the present invention.

[0024] Figure 9 The image shown is a top view of a display device provided in an embodiment of the present invention. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Figure 1 The diagram shown is a structural schematic of a display device in related technologies. For example... Figure 1 As shown, a flexible rollable screen is a type of flexible screen that adjusts its display area by rolling the screen. Compared to traditional displays, flexible rollable screens are thinner and lighter, and due to the use of OLED (Organic Light-Emitting Diode), their power consumption is also lower than that of traditional displays. Consumers can roll the screen as needed to adjust the display area, and even completely roll it up when not in use, making it convenient to store and saving space. Due to its versatility and ease of use, it has been popular with most consumers. Existing flexible rollable screens typically roll the flexible module 30 onto a rollable shaft 20, changing the ratio of the flexible module 30 to the rollable shaft 20 by extending and retracting it, thereby changing the display area. However, the inventors discovered during long-term research that, after rolling the flexible rollable screen to a certain extent, fatigue-induced bulging occurs in the rolling area, reducing the flatness of the flexible module 30.

[0027] In some embodiments, the flexible module 30 uses a flexible material such as polyester or polyimide as a substrate. These flexible materials possess good flexibility and mechanical properties, enabling them to withstand bending and rolling operations, thus allowing the flexible rollable screen to maintain good display performance even after multiple operations. However, even with the aforementioned substrate, the flexible module 30 still retains a certain degree of rigidity. After repeated reciprocating motions of the rollable shaft 20, both the adhesive and film materials of the flexible module 30 exhibit residual deformation, making it difficult to flatten the display module. Therefore, the flexible rollable screen experiences a problem of reduced flatness due to bulging of the display module during or after unfolding.

[0028] Figure 2 The diagram shown is a structural schematic of a display device provided in an embodiment of the present invention. Figure 3 The diagram shown is a structural schematic of a display device provided in another embodiment of the present invention. Figure 4 The diagram shown is a structural schematic of a display device provided in another embodiment of the present invention. Figure 5 As shown Figure 4 A magnified view of a portion of point A in the middle. Figure 6 The diagram shown is a structural schematic of a display device provided in another embodiment of the present invention. Figure 7 As shown Figure 6 A magnified view of a section at point B in the middle. Figure 8 The diagram shown is a structural schematic of a display device provided in another embodiment of the present invention. Figure 9 The image shown is a top view of a display device provided in an embodiment of the present invention. Figures 2 to 9 As shown, to address the aforementioned problems, one embodiment of the present invention provides a display device, which includes a housing 10, a sliding shaft 20, a flexible module 30, and a flattening member 40. The housing 10 has a winding cavity 11. The sliding shaft 20 extends along a first direction and is rotatably disposed within the winding cavity 11 about its own axis. The flexible module 30 is wound up along a second direction and has an extended state and a wound state, the first and second directions being perpendicular. The flattening member 40 is rotatably disposed on the housing 10 about its own axis, the axis of which extends along the first direction. The flattening member 40 is located on the side of the sliding shaft 20 away from the extended section of the flexible module 30. When the flexible module 30 switches between the extended and wound states, the sliding shaft 20 rotates about its own axis, the flexible module 30 extends or winds up along the second direction on the sliding shaft 20, and the flattening member 40 can rotate about its own axis and fit against the extended section of the flexible module 30.

[0029] According to the technical solution of this invention, the display device includes a housing 10, a sliding shaft 20, a flexible module 30, and a flattening member 40. When the operator extends or retracts the flexible module 30 onto the sliding shaft 20 along a second direction, switching between the extended and retracted states, the sliding shaft 20 can rotate about an axis extending along a first direction, and the flattening member 40 can rotate about its own axis. At this time, the flattening member 40 is located on the side of the sliding shaft 20 away from the extended section of the flexible module 30, and the flattening member 40 can fit against the extended section of the flexible module 30. The flattening member 40 can provide a downward flattening force to the flexible module 30 during movement. The bulges on the flexible module 30 are pressed down and flattened by the flattening force provided by the flattening member 40, thereby improving the flatness of the flexible module 30 and enhancing the display effect and tactile effect of the display device. At the same time, the flattening component 40 can also remove foreign objects remaining on the surface of the flexible module 30, preventing foreign objects from entering the winding cavity 11 with the flexible module 30 and adhering between the two layers after the flexible module 30 is wound up, thereby avoiding damage to the flexible module 30.

[0030] Of course, the bulging phenomenon is caused by the deformation of the film layer due to residual stress inside the flexible module 30. At this time, if the user applies a large pulling force to the flexible module 30, it can be flattened. However, due to the large pulling force, the pulling force acting on the flexible module 30, and the pressure exerted by this pulling force on the sliding roller 20 through the flexible module 30, are both large, which will seriously affect the service life of the flexible module 30 and the sliding roller 20. If the user applies a small pulling force to the flexible module 30, it is difficult to flatten the flexible module 30. The technical solution of this application uses the flattening member 40 to flatten the bulges on the flexible module 30. This is achieved by using the flattening member 40 to apply downward pressure to the bulges when in contact with the flexible module 30, thus flattening them without changing the pulling force applied by the user to the flexible module 30, and therefore without affecting the service life of the flexible module 30 and the sliding roller 20.

[0031] The housing 10 of the display device serves to house the sliding shaft 20 and the flexible module 30. When the flexible module 30 is fully wound onto the sliding shaft 20, the sliding shaft 20 is located within the winding cavity 11 of the housing 10, preventing external factors from damaging the flexible module 30. In some embodiments, the sliding shaft 20 can not only rotate around its own axis but also move along a second direction, thereby adjusting the relative position of the flexible module 30 according to actual conditions. In this case, the housing 10 is generally provided with a groove extending along the second direction, allowing the sliding shaft 20 to slide within the groove and slide out and into the winding cavity 11. At this time, the sliding shaft 20 can drive the flexible module 30 wound on it to move along the second direction. In some embodiments, the movement of the sliding shaft 20 along the second direction is also achieved by a driving member. The driving force provided by the driving member can avoid uneven force caused by manual operation by the user, thereby protecting the sliding shaft 20 and the flexible module 30 and improving the service life of the display device.

[0032] It should be noted that the extension and rewinding operations of the flexible module 30 can be either active or passive. In some embodiments, the extension and rewinding of the flexible module 30 can be achieved by setting a motor to drive the sliding shaft 20 to rotate around its own axis. Generally, when using a motor to drive the sliding shaft 20 to rotate, the user needs to operate the end of the flexible module 30 to flatten it. In other embodiments, the user can operate the flexible module 30 through direct pulling and rewinding operations to extend or rewind it. Compared to the user's direct pulling and rewinding method, using a motor to drive the sliding shaft 20 to rotate provides a more uniform driving force, which is beneficial for protecting the flexible module 30 and extending its service life.

[0033] In some embodiments, the flattening member 40 adopts a flattening shaft, which is a cylindrical structure. When the flexible module 30 switches between the extended state and the retracted state, the surface of the flattening shaft and the flexible module 30 can form a good line contact, so that the flattening shaft can contact all parts of the flexible module 30. As long as there is a bulge on the flexible module 30, it can apply downward pressure to the bulge and flatten it.

[0034] like Figure 2 As shown, the flattening shaft can be operated by active rotation. Figure 3As shown, the flattening shaft can also be passively rotated. When the flexible module 30 switches between the extended and retracted states, since the surface of the flattening shaft and the flexible module 30 is released, the friction between the flattening shaft and the flexible module 30 causes the flexible module 30 to drive the flattening shaft to rotate. At this time, the rotation direction of the flattening shaft can only be determined by the movement direction of the flexible module 30. Of course, a separate drive component, such as a drive motor, can also be provided for the flattening shaft to drive its rotation. In this case, the rotation direction of the flattening shaft can be determined by the drive motor. Furthermore, since the flattening shaft rotates relying on the driving force of the drive motor, there is no need to generate a large friction force between it and the flexible module 30, which is beneficial for protecting the flexible module 30, reducing wear caused by friction between the flattening shaft and the flexible module 30, and improving the service life of the flexible module 30.

[0035] Of course, in order to further improve the flattening effect of the bulge, in some embodiments, at least two flattening members 40 can be provided along the second direction. When the flexible module 30 extends and retracts along the second direction, both flattening members 40 can contact the surface of the flexible module 30 to smooth the bulge on the surface of the flexible module 30.

[0036] like Figure 6 and Figure 8 As shown, there are at least two flattening members 40, which are located on both sides of the extended section of the flexible module 30. When the flexible module 30 switches between the winding state and the extended state, the at least two flattening members 40 rotate around their own axes. With the above arrangement, by providing flattening members 40 on both sides of the flexible module 30, contact can be formed with both sides of the flexible module 30. On the one hand, the two flattening members 40 can smooth out the bulges on the display side and the non-display side of the flexible module 30 respectively. On the other hand, they can also prevent foreign objects on the display side and the non-display side from entering the winding cavity 11 respectively, so as to protect the flexible module 30.

[0037] In some embodiments, only one flattening member 40 may be provided on each side of the extended section of the flexible module 30. In other embodiments, two or more flattening members 40 may be provided on each side of the extended section of the flexible module 30.

[0038] In some embodiments, the flattening member 40 located on the display side of the flexible module 30 can be configured to rotate actively, while the flattening member 40 located on the non-display side of the flexible module 30 can be configured to rotate passively. In other embodiments, the flattening member 40 located on the display side of the flexible module 30 can be configured to rotate passively, while the flattening member 40 located on the non-display side of the flexible module 30 can rotate actively. In still other embodiments, the flattening member 40 located on the display side of the flexible module 30 can rotate passively, while the flattening member 40 located on the non-display side of the flexible module 30 can rotate passively. Alternatively, the flattening member 40 located on the display side of the flexible module 30 can rotate actively, while the flattening member 40 located on the non-display side of the flexible module 30 can rotate actively.

[0039] like Figure 2 As shown, the end of the housing 10 has an opening that communicates with the winding cavity 11. The flexible module 30 extends through the opening into the housing 10 to extend or retract onto the sliding roller 20. At least two flattening members 40 are disposed at the opening. By using the above structure and placing the flattening members 40 at the opening at the end of the housing 10, compared to designing a wider bezel, the occupancy of the bezel can be reduced, achieving a narrow bezel and increasing the display area.

[0040] In related technologies, flexible rollable screens, in addition to having a housing, also have a frame connected to the housing. The frame design of flexible rollable screens is relatively wide, which can effectively cover areas with poor flatness of the flexible module 30 and improve the display effect. However, the increased frame width will affect the display area of ​​the flexible module 30. In the design of this application, since the flattening member 40 is set at the opening at the end of the housing 10 to smooth the bulge of the flexible module 30, there is no need to set a wide frame to cover areas with poor flatness, thus increasing the display area of ​​the flexible module 30.

[0041] In some embodiments, when the flexible module 30 switches from a wound state to an extended state, the flexible module 30 drives the flattening member 40 to rotate around its own axis. By using the flexible module 30 to drive the flattening member 40 to rotate, the structure of the display device can be simplified, manufacturing costs reduced, and market competitiveness enhanced.

[0042] In some embodiments, since the flattening member 40 rotates using friction as the driving force, in order to reduce the friction required for the flattening member 40 to rotate, it is necessary to reduce the resistance of the flattening member 40 during rotation. A bearing can be provided between the flattening member 40 and the housing 10. On the one hand, the bearing supports the flattening member 40, and on the other hand, it can reduce the friction between the flattening member 40 and the housing 10, thereby reducing the resistance of the flattening member 40 during rotation. This allows the flattening member 40 to be driven with only a small driving force, thereby reducing the friction between the flattening member 40 and the flexible module 30, reducing wear on the flexible module 30, and improving its service life.

[0043] In other embodiments, the flattening member 40 includes a fixed shaft and a rotating shaft. The fixed shaft is fixedly disposed at the end opening of the housing 10, and the rotating shaft is a hollow shaft sleeved on the outside of the fixed shaft with a clearance fit. The rotating shaft is in contact with the surface of the flexible module 30, and the rotating shaft is driven to rotate relative to the fixed shaft by the friction between the flexible module 30 and the rotating shaft. Furthermore, the fixed shaft and the rotating shaft are concentrically arranged, and the fixed shaft can limit and guide the rotating shaft. At the same time, in order to prevent the rotating shaft from moving relative to the fixed shaft in the first direction, a limiting structure can also be provided, such as a combination of a limiting protrusion and a limiting groove, so that the rotating shaft can only rotate around its own axis and cannot move in the first direction.

[0044] It should be noted that, regardless of the form in which the flattening component 40 is arranged on the housing 10, the fixing structure of the flattening component 40 is not limited to the above arrangement. The flattening component 40 can be arranged on the housing 10 in any way.

[0045] In some embodiments, the display device further includes a driving member, which is driven to the flattening member 40 to drive the flattening member 40 to rotate about its own axis. By driving the flattening member 40 to rotate, the flattening member 40 can be actively rotated, thereby reducing the friction between the flattening member 40 and the flexible module 30, reducing wear on the flexible module 30, and improving its service life.

[0046] Furthermore, by actively rotating the flattening component 40, the occurrence of abnormalities or static electricity caused by friction on the surface of the flattening component 40 and the display module can be reduced.

[0047] In some embodiments, in order to facilitate the arrangement of the driving member and the power transmission between the driving member and the flattening member 40, a transmission structure can also be provided. The driving member transmits power to the flattening member 40 through the transmission structure. The transmission structure can be in the form of gears or belts.

[0048] When flattening components 40 are provided on both sides of the flexible module 30, two driving components can be used to drive the two flattening components 40 to rotate actively. Alternatively, only one driving component can be provided, along with a transmission structure, so that one driving component can drive the two flattening components 40 to rotate simultaneously. The specific arrangement needs to be determined based on the actual situation.

[0049] like Figure 2 As shown, when the flexible module 30 switches from the extended state to the winding state, the rotation direction of the flattening member 40 is the same as the rotation direction of the sliding shaft 20. With this configuration, during the winding process of the flexible module 30, since the flattening member 40 and the sliding shaft 20 are located on opposite sides of the flexible module 30, the driving member allows the flattening member 40 to rotate in the same direction as the sliding shaft 20. This ensures that the tangential direction of the lowest point of the flattening member 40 is opposite to the direction of movement of the extended section of the flexible module 30 during winding, thereby cleaning the surface of the flexible module 30 and preventing dust or foreign objects from entering the winding cavity 11.

[0050] exist Figure 2 In the illustrated embodiment, the flattening member 40 needs to be driven by a driving member to rotate around its own axis in order to achieve the same rotation direction as the sliding roller 20. Figure 3 In the embodiment shown, when the flexible module 30 switches to the winding state, the friction between the flexible module 30 and the flattening member 40 causes the flattening member 40 to rotate around its own axis.

[0051] It should be noted that when flattening members 40 are provided on both sides of the flexible module 30, the two flattening members 40 can be set by actively rotating using a driving member. In this case, the flattening members 40 arranged on the same side as the sliding shaft 20 should have opposite rotation directions to enable cleaning of the surface of the flexible module 30 and prevent dust or foreign objects from entering the winding cavity 11.

[0052] Of course, considering the rationality and practicality of the arrangement of each structural component, and taking into account the manufacturing cost, when both sides of the flexible module 30 are provided with flattening components 40, it is also possible to use only one flattening component 40 as the active rotation method.

[0053] like Figures 4 to 7 As shown, a cleaning section 41 is provided on the outer periphery of the flattening member 40. The cleaning section 41 can be used to clean the surface of the flexible module 30 to remove dust or foreign objects from the surface of the flexible module 30, so as to prevent them from entering the winding cavity 11 and causing damage to the wound flexible module 30.

[0054] The cleaning part 41 should be arranged on the entire outer surface of the flattening part 40. The cleaning part 41 should be made of a deformable material to reduce the contact stress of the cleaning part 41 on the surface of the flexible module 30.

[0055] In some embodiments, the cleaning part 41 is made of a pile material. The pile material can be easily deformed, and when it rotates with the flattening part 40, it has good cleaning performance, so that dust or foreign objects on the surface of the flexible module 30 can be easily cleaned.

[0056] In some embodiments, the cleaning part 41 is made of an elastic material. The use of an elastic material for the cleaning part 41 facilitates the deformation of the cleaning part 41, thereby reducing the contact stress of the cleaning part 41 on the surface of the flexible module 30.

[0057] The elastic material can be rubber or similar materials. By utilizing the deformability of rubber, it can effectively clean the surface of the flexible module 30, and also reduce the contact stress of the cleaning part 41 on the surface of the flexible module 30 through the deformation of the rubber.

[0058] Of course, other deformable materials can also be used to make the cleaning part 41, as long as the cleaning function of the cleaning part 41 can be realized, the contact stress of the cleaning part 41 on the surface of the flexible module 30 can be reduced, and scratches or marks on the surface of the flexible module 30 can be avoided.

[0059] like Figure 4 and Figure 5 As shown, when the display device includes only one flattening member 40, a cleaning part 41 can be provided only on the flattening member 40. The cleaning part 41 is used to clean dust and foreign objects on the flexible module 30 to prevent dust and foreign objects from entering the winding cavity 11 and accumulating on the wound flexible module 30.

[0060] like Figure 6 and Figure 7 As shown, when the display device includes two flattening parts 40, a cleaning part 41 can be provided on both flattening parts 40. By providing a cleaning part 41 on both flattening parts 40, dust and foreign objects on both sides of the flexible module 30 can be prevented from entering the winding cavity 11.

[0061] Of course, in some embodiments, the cleaning part 41 may be provided only on one of the two flattening members 40. Or, as Figure 8 As shown, neither of the two flattening parts 40 is provided with a cleaning part 41.

[0062] like Figure 2 and Figure 3As shown, the flexible module 30 has a connecting portion for connecting the operating member 50 at its end near the sliding shaft 20. The contact line between the flattening member 40 and the flexible module 30 is a flattening line, and the surface of the flexible module 30 away from the connecting portion is coplanar with the flattening line. With the above structure, the user can operate the flexible module 30 through the operating member 50 to make the display side surface of the flexible module 30 coplanar with the flattening line, thereby flattening the flexible module 30 and giving it a flatter display plane.

[0063] The operating component 50 is used by the user to operate the flexible module 30. Generally, the non-display side of the flexible module 30 has an adhesive part, and the operating component 50 is connected to the flexible module 30 through the adhesive part. When the flexible module 30 switches from a rolled-up state to an extended state, the user uses the operating component 50 to flatten the flexible module 30 to improve the viewing experience.

[0064] It should be noted that when the user performs the flattening operation, the distance between the contact line and the flattening line between the sliding roller 20 and the flexible module 30 in the third direction should be within a preset distance. The contact line can be located above the flattening line; or, the contact line can be flush with the flattening line; or, the contact line can be located below the flattening line. As long as the preset distance is maintained, the flexible module 30 can be extended and retracted normally, and the flattening component 40 can be used to smooth the flexible module 30.

[0065] In the accompanying drawings of this application, the first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction.

[0066] In some embodiments, the flattening member 40 is a flattening shaft, and the ratio between the diameter of the flattening shaft and the thickness of the housing 10 is greater than or equal to 0.5 and less than or equal to 1. By adopting the above-mentioned dimensional settings, it is possible to prevent the flattening shaft from protruding from the housing 10, and to avoid accidental rotation of the flattening shaft due to external factors, thereby avoiding damage to the flexible module 30.

[0067] The ratio between the diameter of the flattening shaft and the thickness of the housing 10 can be 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, or any value greater than or equal to 0.5 and less than or equal to 1.

[0068] Of course, the actual relative position between the flattening shaft and the housing 10 needs to be determined based on the shape of the housing 10 and the relative positional relationship between the housing 10 and the flexible module 30. The setting of the flattening shaft should not affect the strength of the housing 10 to ensure its service life, nor should it affect the extension of the flexible module 30. The diameter of the flattening shaft needs to be determined according to the actual situation.

[0069] In some embodiments, the stiffness of the flattening member 40 is the same as the stiffness of the sliding shaft 20. With this configuration, when the flexible module 30 switches between the extended and retracted states, the flattening member 40 and the sliding shaft 20 have the same structural strength. This ensures that when the flexible module 30 exerts the same force on both, the contact stress on the flattening member 40 and the retracted shaft is the same, resulting in the same strain and thus their service lives are nearly identical. Excessive strain in either the flattening member 40 or the sliding shaft 20 will not affect the other.

[0070] It should be noted that the materials of the flattening component 40 and the sliding roller 20 are not limited, as long as they have the same rigidity.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0074] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0075] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0076] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A display device, characterized in that, The display device includes: A housing having a winding cavity; A sliding shaft extends along a first direction and is rotatably disposed within the winding cavity about its own axis; A flexible module is wound up along a second direction and is disposed on the sliding shaft and has an extended state and a wound state, wherein the first direction and the second direction are perpendicular. A flattening member is rotatably disposed on the housing about its own axis, the axis of the flattening member extends along the first direction, and the flattening member is located on the side of the sliding shaft away from the extension section of the flexible module; When the flexible module switches between the extended state and the retracted state, the sliding shaft rotates around its own axis, the flexible module extends or retracts along the second direction on the sliding shaft, and the flattening member can rotate around its own axis and fit against the extended section of the flexible module.

2. The display device according to claim 1, characterized in that, There are at least two flattening components, which are located on both sides of the extension section of the flexible module. When the flexible module switches between the winding state and the extension state, the at least two flattening components rotate around their own axes.

3. The display device according to claim 2, characterized in that, The end of the housing has an opening that communicates with the winding cavity. The flexible module extends out of the housing through the opening to extend or wind up the sliding shaft. At least two of the flattening members are disposed at the opening.

4. The display device according to claim 1, characterized in that, When the flexible module switches from the winding state to the stretching state, the flexible module drives the flattening component to rotate around its own axis.

5. The display device according to claim 1, characterized in that, The display device further includes a driving component, which is drivenly connected to the flattening component to drive the flattening component to rotate about its own axis.

6. The display device according to claim 5, characterized in that, When the flexible module switches from the extended state to the retracted state, the rotation direction of the flattening member is the same as the rotation direction of the sliding shaft.

7. The display device according to claim 1, characterized in that, The outer periphery of the flattening component is provided with a cleaning part, which is made of a plush material or an elastic material.

8. The display device according to claim 1, characterized in that, The flexible module has a connecting part for connecting the operating component at the end near the sliding shaft. The contact line between the flattening component and the flexible module is a flattening line. The surface of the flexible module away from the connecting part is coplanar with the flattening line.

9. The display device according to claim 1, characterized in that, The flattening component is a flattening shaft, and the ratio between the diameter of the flattening shaft and the thickness of the housing is greater than or equal to 0.5 and less than or equal to 1.

10. The display device according to claim 1, characterized in that, The stiffness of the flattening component is the same as the stiffness of the sliding roller.

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