Folding display device

Abstract

The present application discloses a folding display device, which belongs to the technical field of electronic equipment. The folding display device includes: a rotating shaft component, a folding display screen, and two shells arranged opposite to each other. By arranging mutually connected frames and support platforms in the shell of the folding display device, the support surface of the support platform can play a good supporting role for the edge portion of the folding display screen. And after the folding display device is in the unfolded state, the orthographic projection of the protrusion on the frame on the target plane and the orthographic projection of the folding display screen on the target plane do not overlap, that is, the frame in the shell will not block the edge area of ​​the folding display screen, so that the folding display screen has a larger screen-to-body ratio, realizing the visual narrow frame of the main screen of the folding display device, and effectively improving the refinement of the whole machine.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a foldable display device. Background Art

[0002] With the development of display technology, more and more display devices will be equipped with foldable display screens. Display devices equipped with foldable display screens can realize the switching of the physical size of the display device, which greatly improves the user experience.

[0003] Currently, a screen pressing strip is usually provided at the edge of the foldable display screen in a foldable display device to protect the foldable display screen.

[0004] However, the screen pressure bar will occupy a certain width of the edge of the foldable display screen, resulting in a smaller screen-to-body ratio of the foldable display device. Utility Model Content

[0005] The embodiment of the present application provides a foldable display device. It can solve the problem that the screen pressing bar in the foldable display device in the prior art occupies the edge of the foldable display screen, resulting in a small screen-to-body ratio. The technical solution is as follows:

[0006] In one aspect, a foldable display device is provided, the foldable display device comprising:

[0007] A rotating shaft component, a folding display screen and two shells arranged opposite to each other;

[0008] The rotating shaft component is located between the two shells, and the shells are connected to the rotating shaft component;

[0009] The housing comprises: a support platform, and a frame connected to the support platform, the support platform having a support surface for supporting an edge portion of the folding display screen, the frame having a protrusion protruding from the support surface, and in a direction parallel to the display surface of the folding display screen, the support platform is closer to the display area of ​​the folding display screen than the frame;

[0010] Wherein, after the foldable display device is in an unfolded state, an orthographic projection of the protruding portion on a target plane parallel to the display surface and an orthographic projection of the foldable display screen on the target plane do not overlap.

[0011] Optionally, the folding display screen includes: a display panel, and a cover plate attached to the display side of the display panel, the edge of the cover plate protrudes from the edge of the display panel, and the edge portion of the cover plate protruding relative to the display panel is located on the support platform.

[0012] Optionally, the protrusion is annular, and when the folding display device is in the unfolded state, the cover plate is located in the area surrounded by the protrusion.

[0013] Optionally, the support platform has a support surface for supporting the edge portion of the cover plate, and the frame includes: a first sub-frame, and a first sub-protruding portion connected to the first sub-frame and protruding outwardly relative to the support surface, and the length direction of the first sub-frame is parallel to the axis of rotation of the shell relative to the shaft component;

[0014] Wherein, a first gap is provided between the cover plate and the first sub-protrusion.

[0015] Optionally, a second gap is provided between a side of the display panel facing the first sub-frame and the support platform;

[0016] Wherein, when the foldable display device is in an unfolded state, the width of the second gap is greater than or equal to the width of the first gap.

[0017] Optionally, in a direction perpendicular to the supporting surface, a height of the first sub-protrusion is greater than or equal to a thickness of the cover plate.

[0018] Optionally, the frame further comprises: a decorative piece fixedly connected to a side of the first sub-protrusion away from the first sub-frame, wherein in a direction parallel to the supporting surface, the decorative piece protrudes relative to a side of the first sub-protrusion toward the cover plate;

[0019] Wherein, in a direction perpendicular to the supporting surface, a distance between the decorative element and the supporting platform is greater than a thickness of the cover plate.

[0020] Optionally, after the folding display device is in the unfolded state, in a direction parallel to the supporting surface, a distance between the decorative element and the cover plate is less than or equal to 0.1 mm.

[0021] Optionally, the frame further includes: a second sub-frame, and a second sub-protruding portion connected to the second sub-frame and protruding outwardly relative to the supporting surface, wherein the length direction of the second sub-frame is perpendicular to the axis of rotation of the shell relative to the rotating shaft component;

[0022] Wherein, the width between the cover plate and the second sub-protrusion is less than or equal to the width of the first gap.

[0023] Optionally, the width between the cover plate and the second sub-protrusion is less than or equal to 0.1 mm.

[0024] Optionally, the folding display device further includes: a buffer layer fixed on the support platform, and the buffer layer is in contact with an edge portion of the folding display screen.

[0025] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0026] A folding display device may include: a rotating shaft component, a folding display screen, and two shells arranged opposite to each other. By providing mutually connected frames and a support platform in the shell of the folding display device, the support surface of the support platform can play a good supporting role for the edge portion of the folding display screen. And after the folding display device is in the unfolded state, the orthographic projection of the protrusion on the frame on the target plane and the orthographic projection of the folding display screen on the target plane do not overlap, that is, the frame in the shell will not block the edge area of ​​the folding display screen, so that the folding display screen has a larger screen-to-body ratio, and the visually narrow frame of the main screen of the folding display device is realized, which effectively improves the refinement of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 is a structural schematic diagram of a foldable display device provided in an embodiment of the present application;

[0029] Figure 2 yes Figure 1 A front view of the foldable display device is shown;

[0030] Figure 3 yes Figure 2 A cross-sectional view at A-A';

[0031] Figure 4 is a cross-sectional view of a partial structure of a foldable display device provided in an embodiment of the present application;

[0032] Figure 5 is a cross-sectional view of a partial structure of another foldable display device provided by an embodiment of the present application;

[0033] Figure 6 is a front view of another foldable display device provided by an embodiment of the present application;

[0034] Figure 7 yes Figure 6 Cross-sectional view at BB'.

[0035] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is a schematic structural diagram of a foldable display device provided in an embodiment of the present application, Figure 2 yes Figure 1 A front view of the foldable display device is shown, Figure 3 yes Figure 2 Cross-sectional view at A-A'. When the terminal device is a foldable display device, it can be folded to reduce its volume, thereby improving portability; when the user uses the foldable display device, it can be unfolded to provide a larger display area and operation area, thereby improving ease of use. In practical applications, the types of foldable display devices can be divided into many types, for example, they can be mobile phones, tablet computers, laptop computers, e-books, etc. The foldable display device 000 may include: a hinge component 100, a foldable display screen 200 and two shells 300 arranged opposite to each other.

[0038] The hinge component 100 in the folding display device 000 may be located between the two housings 300, and the housing 300 may be connected to the hinge component 100. In this way, the two housings 300 can rotate relative to each other through the hinge component 100 to drive the folding display screen 200 to unfold or fold.

[0039] The shell 300 in the folding display device 000 may include: a support platform 301, and a frame 302 connected to the support platform 301, the support platform 301 may have a support surface b1 for supporting the edge portion of the folding display screen 200, the frame 302 may have a protrusion A protruding from the support surface b1 of the support platform 301, and in a direction parallel to the display surface a1 of the folding display screen 200, the support platform 301 may be closer to the display area of ​​the folding display screen 200 relative to the frame 302.

[0040] When the foldable display device 000 is in the unfolded state, the orthographic projection of the protrusion A on the target plane parallel to the display surface a1 of the foldable display screen 200 and the orthographic projection of the foldable display screen 200 on the target plane may not overlap.

[0041] In the embodiment of the present application, by providing mutually connected frame 302 and support platform 301 in the housing 300 of the folding display device 000, the support surface b1 of the support platform 301 can play a good supporting role for the edge portion of the folding display screen 200. And after the folding display device 000 is in the unfolded state, the orthographic projection of the protrusion A on the frame 302 on the target plane and the orthographic projection of the folding display screen 200 on the target plane do not overlap, that is, the frame 302 in the housing 300 will not block the edge area of ​​the folding display screen 200, so that the folding display screen has a larger screen-to-body ratio, and the visually narrow frame of the main screen of the folding display device 000 is realized, which effectively improves the refinement of the whole device.

[0042] It should be noted that the housing 300 in the foldable display device 000 may be a middle frame, and the screen pressing strip connected to the middle frame is eliminated.

[0043] In summary, the embodiments of the present application provide a folding display device, which may include: a hinge component, a folding display screen, and two shells arranged opposite to each other. By providing mutually connected frames and support platforms in the shell of the folding display device, the support surface of the support platform can play a good supporting role for the edge portion of the folding display screen. And after the folding display device is in the unfolded state, the orthographic projection of the protrusion on the frame on the target plane and the orthographic projection of the folding display screen on the target plane do not overlap, that is, the frame in the shell will not block the edge area of ​​the folding display screen, so that the folding display screen has a larger screen-to-body ratio, realizing the visual narrow frame of the main screen of the folding display device, and effectively improving the refinement of the whole machine.

[0044] Optional, please refer to Figure 4 , Figure 4It is a cross-sectional view of a partial structure of a folding display device provided by an embodiment of the present application. The folding display screen 200 in the folding display device 000 may include: a display panel 201, and a cover plate 202 attached to the display side of the display panel 201. The edge of the cover plate 202 may protrude from the edge of the display panel 201, and the edge portion of the cover plate 202 protruding relative to the display panel 201 may be located on the support platform 301. In this case, by setting the edge of the cover plate 202 to protrude from the edge of the display panel 201, that is, extending the cover plate 202, the cover plate 202 can effectively protect the display panel 201, and the support platform 301 in the housing 300 can effectively support the edge portion of the cover plate 202 protruding relative to the display panel 201. In the present application, the display panel 201 may include: a plane portion 201a, and a panel bending portion 201b connected to the plane portion 201a, and the display area of ​​the folding display screen 200 may be located in the plane portion 201a. The cover plate 202 can be attached to the display side of the flat portion 201a, and the edge portion of the cover plate 202 protruding relative to the flat portion 201a can cover the panel bending portion 201b to effectively protect the panel bending portion 201b. It should be noted that in the actual assembly process, in order to further improve the aesthetics of the entire machine, black ink can be applied to the edge portion of the cover plate according to actual needs to form a smaller black border of the main screen and ensure the screen-to-body ratio.

[0045] In the present application, the protrusion A on the frame 302 may be ring-shaped, and the cover plate 202 in the folding display screen may be located within the area enclosed by the protrusion A when the folding display device is in the unfolded state.

[0046] In the embodiments of the present application, Figure 2 and Figure 4As shown, the support platform 301 in the housing 300 may have a support surface b1 for supporting the edge portion of the cover plate 202, and the frame 302 in the housing 300 may include: a first sub-frame 302a, and a first sub-protrusion 302b connected to the first sub-frame 302a and protruding outward relative to the support surface b1 of the support platform 301, and the length direction of the first sub-frame 302a may be parallel to the axis L of the housing 300 rotating relative to the rotating shaft component 100. Among them, there may be a first gap c1 between the cover plate 202 and the first sub-protrusion 302b in the frame 302. In this case, by providing the first sub-frame 302a and the first sub-protrusion 302b connected to each other in the frame 302, the first sub-protrusion 302b can play a certain decorative role on the outer edge of the housing 300 in the folding display device 000, and can play a certain protective role on the side of the cover plate 202. It should be noted that, in a possible implementation, the first sub-protrusion 302b may be a part of the protrusion A.

[0047] In addition, as the shell 300 rotates relative to the hinge member 100 to drive the folding display screen 200 to fold, the folding display screen 200 will produce a certain amount of slippage in the first direction (X-axis direction), and the first direction is perpendicular to the extension direction of the axis L of the shell 300 rotating relative to the hinge member. Therefore, the first gap c1 provided between the cover plate 202 and the first sub-protrusion 302b can provide a certain amount of slippage space for the slippage of the folding display screen 200, thereby ensuring the reliability of the folding display screen 200 when switching between the unfolded state and the folded state. Here, the first sub-frame 302a can be connected to the support platform 301, and the first sub-protrusion 302b in the frame 302 can protrude outward relative to the support surface b1 of the support platform 301 in a direction perpendicular to the support surface b1. In the present application, as Figure 4 As shown, in the direction perpendicular to the support surface b1 of the support platform 301, the height h1 of the first sub-protrusion 302b in the frame 302 can be greater than or equal to the thickness h2 of the cover plate 202. In this case, by setting the height h1 of the first sub-protrusion 302b to be greater than or equal to the thickness h2 of the cover plate 202, the first sub-protrusion 302b can effectively protect the side of the cover plate 202, thereby ensuring the reliability of the cover plate 202. It should be noted that in the present application, the cover plate 202 can be a single-layer flexible glass plate, or can include a double-layer flexible glass plate and a transparent adhesive layer located between the double-layer flexible glass plates, and the embodiments of the present application do not make specific limitations on this.

[0048] Optional, such as Figure 4As shown, a second gap c2 may be provided between the side of the display panel 201 facing the first sub-frame 302a in the frame 302 and the support platform 301 in the housing 300. Wherein, after the folding display device 000 is in the unfolded state, the width of the second gap c2 may be greater than or equal to the width of the first gap c1 between the cover plate 202 and the first sub-protrusion 302b. In this case, by setting the second gap c2 between the display panel 201 and the support platform 301 in the housing 300, and the width of the second gap c2 may be greater than the width of the first gap c1 between the cover plate 202 and the first sub-protrusion 302b. In this way, when the folding display screen 200 switches from the unfolded state to the folded state, after the folding display screen 200 has a certain slip in the first direction, it can also be ensured that the display panel 201 will not interfere with the support platform 301, thereby ensuring the reliability of the folding display device 000.

[0049] In the examples of this application, please refer to Figure 5 , Figure 5 It is a cross-sectional view of a partial structure of another folding display device provided by an embodiment of the present application. The frame 302 in the housing 300 may also include: a decorative piece 302c fixedly connected to a side of the first sub-protrusion 302b away from the first sub-frame 302a, and in a direction parallel to the support surface b1 of the support platform 301, the decorative piece 302c may protrude relative to the first sub-protrusion 302b toward a side of the cover plate 202. In the direction perpendicular to the support surface b1 of the support platform 301, the distance h3 between the decorative piece 302c in the frame 302 and the support platform 301 may be greater than the thickness h2 of the cover plate 202. In this case, by providing a decorative piece 302c connected to the first sub-protrusion 302b in the frame 302, the decorative piece 302c protrudes relative to the first sub-protrusion 302b toward one side of the cover plate 202, so that at least part of the first gap c1 can be covered by the decorative piece 302c, so that the peripheral area of ​​the folding display device 000 has a smaller appearance gap, further ensuring the refinement of the whole machine. In addition, since the distance h3 between the decorative piece 302c and the support platform 301 in the direction perpendicular to the support surface b1 is greater than the thickness h2 of the cover plate 202. Therefore, the decorative piece 302c, the first sub-protrusion 302b and the support platform 301 can be used to enclose an undercut groove to ensure that the cover plate 202 will not interfere with the first sub-protrusion 302b when sliding along the first direction. It should be noted that in a possible implementation, the decorative piece 302c can be a part of the protrusion A.

[0050] Optional, such as Figure 5As shown, after the foldable display device 000 is in the unfolded state, in the direction parallel to the support surface b1 of the support platform 301, the distance c3 between the decorative piece 302c in the frame 302 and the cover plate 202 can be less than or equal to 0.1 mm. It should be noted that in the actual processing process, in order to reduce the manufacturing cost, when the foldable display device is in the unfolded state, a small gap can be retained between the decorative piece 302c and the cover plate 202, which will not affect the appearance of the whole device.

[0051] In the examples of this application, please refer to Figure 6 and Figure 7 , Figure 6 is a front view of another foldable display device provided in an embodiment of the present application, Figure 7 yes Figure 6 Cross-sectional view at BB'. The frame 302 in the housing 300 may also include: a second sub-frame 302d, and a second sub-protrusion 302e connected to the second sub-frame 302d and protruding outward relative to the support surface b1 of the support platform 301, and the length direction of the second sub-frame 302d may be perpendicular to the axis L of the housing 300 rotating relative to the shaft component 100. Among them, the width c4 between the cover plate 202 and the second sub-protrusion 302e may be less than or equal to the width of the first gap c1. In this case, by providing the second sub-frame 302d and the second sub-protrusion 302e connected to each other in the frame 302, the second sub-protrusion 302e protrudes outward relative to the support surface b1. In this way, the second sub-protrusion 302e can play a certain decorative role on the edge of the housing 300 in the folding display device 000, and can play a certain protective role on the side of the cover plate 202. In addition, since the housing 300 rotates relative to the rotating shaft component 100 to drive the folding display screen 200 to fold, the folding display screen 200 will basically not slip in the second direction (Y-axis direction), and the second direction is parallel to the extension direction of the axis L of the housing 300 rotating relative to the rotating shaft component 100. Therefore, the width reserved between the cover plate 202 and the second sub-protrusion 302e can be less than or equal to the width of the first gap c1, ensuring the refinement of the whole machine. It should be noted that in a possible implementation, the second sub-protrusion 302e can be a part of the protrusion A, that is, the protrusion A can include the first sub-protrusion 302b, the decorative member 302c and the second sub-protrusion 302e.

[0052] Here, the end of the first sub-protrusion 302b in the frame 302 may be connected to the end of the second sub-protrusion 302e, and the second sub-protrusion 302e in the frame 302 may protrude outward relative to the support surface b1 of the support platform 301 in a direction perpendicular to the support surface b1. In addition, the height of the first sub-protrusion 302b in the frame 302 in the direction perpendicular to the support surface b1 of the support platform 301 may be equal to the height of the second sub-protrusion 302e in the direction perpendicular to the support surface b1 of the support platform 301. In the present application, the width between the cover plate 202 in the folding display screen 200 and the second sub-protrusion 302e in the frame 302 may be less than or equal to 0.1 mm.

[0053] Optional, such as Figure 7 As shown, the folding display device 000 may also include: a buffer layer 400 fixed on the support platform 301 in the housing 300, and the buffer layer 400 may contact the edge portion of the folding display screen 200. In this case, by providing the buffer layer 400 on the support platform 301 in the housing 300, and the buffer layer 400 may contact the edge portion of the folding display screen 200, the buffer layer 400 can be used to seal the folding display device 000, and can avoid direct contact between the edge of the folding display screen 200 and the support platform 301, thereby improving the user experience. In the present application, the buffer layer 400 can be fixed on the support surface b1 of the support platform 301, and the buffer layer 400 can be provided in contact with the edge portion of the cover plate 202 protruding relative to the display panel 201. For example, the buffer layer 400 may be a buffer foam layer or a dustproof foam layer.

[0054] In summary, the embodiments of the present application provide a folding display device, which may include: a hinge component, a folding display screen, and two shells arranged opposite to each other. By providing mutually connected frames and support platforms in the shell of the folding display device, the support surface of the support platform can play a good supporting role for the edge portion of the folding display screen. And after the folding display device is in the unfolded state, the orthographic projection of the protrusion on the frame on the target plane and the orthographic projection of the folding display screen on the target plane do not overlap, that is, the frame in the shell will not block the edge area of ​​the folding display screen, so that the folding display screen has a larger screen-to-body ratio, realizing the visual narrow frame of the main screen of the folding display device, and effectively improving the refinement of the whole machine.

[0055] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0061] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A foldable display device, characterized in that: include: A rotating shaft component (100), a folding display screen (200), and two housings (300) arranged opposite to each other; The rotating shaft component (100) is located between the two shells (300), and the shell (300) is connected to the rotating shaft component (100); The housing (300) comprises: a support platform (301), and a frame (302) connected to the support platform (301), the support platform (301) having a support surface (b1) for supporting an edge portion of the folding display screen (200), the frame (302) having a protrusion (A) protruding from the support surface (b1), and in a direction parallel to a display surface (a1) of the folding display screen (200), the support platform (301) is closer to a display area of ​​the folding display screen (200) than the frame (302); Wherein, when the folding display device is in an unfolded state, the orthographic projection of the protruding portion (A) on a target plane parallel to the display surface (a1) and the orthographic projection of the folding display screen (200) on the target plane do not overlap.

2. The foldable display device according to claim 1, characterized in that: The folding display screen (200) comprises: a display panel (201), and a cover plate (202) attached to a display side of the display panel (201), an edge of the cover plate (202) protruding from an edge of the display panel (201), and an edge portion of the cover plate (202) protruding relative to the display panel (201) is located on the support platform (301).

3. The foldable display device according to claim 2, characterized in that: The protruding portion (A) is annular, and when the folding display device is in an unfolded state, the cover plate (202) is located within the area enclosed by the protruding portion (A).

4. The foldable display device according to claim 2, characterized in that: The support platform (301) has a support surface (b1) for supporting the edge portion of the cover plate (202); the frame (302) comprises: a first sub-frame (302a), and a first sub-protruding portion (302b) connected to the first sub-frame (302a) and protruding outward relative to the support surface (b1); the length direction of the first sub-frame (302a) is parallel to the axis (L) of rotation of the housing (300) relative to the rotating shaft component (100); There is a first gap (c1) between the cover plate (202) and the first sub-protrusion (302b).

5. The foldable display device according to claim 4, characterized in that: A second gap (c2) is provided between the side of the display panel (201) facing the first sub-frame (302a) and the support platform (301); Wherein, when the foldable display device is in an unfolded state, the width of the second gap (c2) is greater than or equal to the width of the first gap (c1).

6. The foldable display device according to claim 4, characterized in that: In a direction perpendicular to the support surface (b1), a height (h1) of the first sub-protrusion (302b) is greater than or equal to a thickness (h2) of the cover plate (202).

7. The foldable display device according to claim 4, characterized in that: The frame (302) further comprises: a decorative piece (302c) fixedly connected to a side of the first sub-protrusion (302b) facing away from the first sub-frame (302a), wherein in a direction parallel to the support surface (b1), the decorative piece (302c) protrudes relative to a side of the first sub-protrusion (302b) toward the cover plate (202); Wherein, in a direction perpendicular to the support surface (b1), a distance (h3) between the decorative element (302c) and the support platform (301) is greater than a thickness (h2) of the cover plate.

8. The foldable display device according to claim 7, characterized in that: When the foldable display device is in an unfolded state, in a direction parallel to the support surface (b1), a distance (c3) between the decorative element (302c) and the cover plate (202) is less than or equal to 0.1 millimeters.

9. The foldable display device according to any one of claims 4 to 8, characterized in that: The frame (302) further comprises: a second sub-frame (302d), and a second sub-protruding portion (302e) connected to the second sub-frame (302d) and protruding outward relative to the supporting surface (b1), wherein the length direction of the second sub-frame (302d) is perpendicular to the axis (L) of rotation of the housing (300) relative to the rotating shaft component (100); Wherein, the width (c4) between the cover plate (202) and the second sub-protrusion (302e) is less than or equal to the width of the first gap (c1).

10. The foldable display device according to claim 9, characterized in that: A width (c4) between the cover plate (202) and the second sub-protrusion (302e) is less than or equal to 0.1 mm.

11. The foldable display device according to any one of claims 1 to 8, characterized in that: The folding display device further comprises: a buffer layer (400) fixed on the support platform (301), and the buffer layer (400) is in contact with an edge portion of the folding display screen (200).

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