Rollable assembly and display device

Abstract

A rollable assembly and a display device. The rollable assembly comprises a flexible display panel (100) and a support mechanism (10). The support mechanism (10) comprises a first support member (200) and a second support member (300) that are matched in a crossed manner, and a height difference between a first support surface (201) of the first support member (200) and a second support surface (301) of the second support member (300) in a direction perpendicular to the flexible display panel (100) is within an error range. The rollable assembly has a first state and a second state, the flexible display panel (100) has a first surface (101) and a second surface (102) in the first state and the second state, respectively, and the area of the first surface (101) is smaller than that of the second surface (102); in the first state, the sum of the areas of the first support surface (201) and the second support surface (301) is not less than the area of the first surface (101); and in the second state, the sum of the areas of the first support surface (201) and the second support surface (301) is not less than the area of the second surface (102).

Description

Rolling assembly and display device

[0001] This application claims priority to the Chinese patent application No. 202411384265.6 filed on September 29, 2024 with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of display screens, for example to a rolling assembly and a display device. BACKGROUND

[0003] Display screens are important components of electronic products. With the rapid development of electronic products and the diversification of user demand for electronic products, people have increasingly high requirements for display screens, such as requiring display screens to have both a large display area and be easy to store. In order to meet this requirement, a rolling screen assembly has emerged. The rolling screen assembly has an unfolded state and a storage state.

[0004] The rolling screen assembly is referred to as a rolling screen. The rolling screen includes a display surface and a surface to be supported. In electronic products, a support device for supporting the rolling screen is usually provided on one side of the surface to be supported. However, in order to be able to support the rolling screen with different unfolded lengths, the support device usually needs to switch its own state to change the support length of the rolling screen. In the process of switching its own state, the support device inevitably appears to support part of the rolling screen in a hollow manner, thereby making the display surface of the rolling screen uneven, seriously affecting the touch performance and strength uniformity of the rolling screen, and reducing the user experience. SUMMARY

[0005] The present application provides a rolling assembly. The flatness of the flexible display panel of the rolling assembly after being unfolded is high, thereby improving the touch performance and strength uniformity thereof.

[0006] The present application provides a rolling assembly. The rolling assembly includes a flexible display panel and a support mechanism located away from a light-emitting surface of the flexible display panel. The support mechanism includes a first support member and a second support member that cross each other. The first support member has a first support surface close to the flexible display panel. The second support member has a second support surface close to the flexible display panel. The height difference between the first support surface and the second support surface in the direction perpendicular to the flexible display panel is within an error range. The rolling assembly has a first state and a second state. In the first state, the flexible display panel has a first surface in the direction perpendicular to the light-emitting direction. In the second state, the flexible display panel has a second surface. The area of the first surface is smaller than the area of the second surface. In the first state, the sum of the areas of the first support surface and the second support surface is not less than the area of the first surface. In the second state, the sum of the areas of the first support surface and the second support surface is not less than the area of the second surface. BRIEF DESCRIPTION OF DRAWINGS

[0007] Fig. 1 is a schematic view of a curling assembly in a first state according to an embodiment of the present application;

[0008] Fig. 2 is a schematic view of the structure shown in Fig. 1 from another perspective;

[0009] Fig. 3 is a top view of the structure shown in Fig. 1 ;

[0010] Fig. 4 is a bottom view of the structure shown in Fig. 1 ;

[0011] Fig. 5 is a front view of the structure shown in Fig. 1 ;

[0012] Fig. 6 is a schematic view of a curling assembly in a second state according to an embodiment of the present application;

[0013] Fig. 7 is a schematic view of the structure shown in Fig. 6 from another perspective;

[0014] Fig. 8 is a top view of the structure shown in Fig. 6;

[0015] Fig. 9 is a bottom view of the structure shown in Fig. 6;

[0016] Fig. 10 is a front view of the structure shown in Fig. 6;

[0017] Fig. 11 is a schematic view of a first support surface of a first support according to an embodiment of the present application;

[0018] Fig. 12 is a schematic view of a second support surface of a second support according to an embodiment of the present application;

[0019] Fig. 13 is a schematic view of a first support surface of another first support according to an embodiment of the present application;

[0020] Fig. 14 is a schematic view of a second support surface of another second support according to an embodiment of the present application;

[0021] Fig. 15 is a schematic view of a first support according to an embodiment of the present application;

[0022] Fig. 16 is a schematic view of the structure shown in Fig. 15 from another perspective;

[0023] Fig. 17 is a schematic view of a second support according to an embodiment of the present application;

[0024] Fig. 18 is a schematic view of the structure shown in Fig. 17 from another perspective;

[0025] Fig. 19 is a schematic view of a support mechanism in a first state according to an embodiment of the present application;

[0026] Fig. 20 is a top view of the structure shown in Fig. 19;

[0027] Fig. 21 is a bottom view of the structure shown in Fig. 19;

[0028] Fig. 22 is a front view of the structure shown in Fig. 19;

[0029] Fig. 23 is a schematic view of the support mechanism provided by Embodiment One of the present application in a second state;

[0030] Fig. 24 is a top view of the structure shown in Fig. 23;

[0031] Fig. 25 is a bottom view of the structure shown in Fig. 23;

[0032] Fig. 26 is a front view of the structure shown in Fig. 23;

[0033] Fig. 27 is a dimensional view of a first support provided by Embodiment One of the present application;

[0034] Fig. 28 is a sectional view of A1-A1 in Fig. 27;

[0035] Fig. 29 is a sectional view of A2-A2 in Fig. 27;

[0036] Fig. 30 is a dimensional view of a second support provided by Embodiment One of the present application;

[0037] Fig. 31 is a sectional view of A3-A3 in Fig. 30;

[0038] Fig. 32 is a sectional view of A4-A4 in Fig. 30;

[0039] Fig. 33 is a front view of the support mechanism provided by Embodiment One of the present application in a first state and when the first distance is greater than 0;

[0040] Fig. 34 is a schematic view of the curling assembly, the first rotating shaft and the second rotating shaft in the first state provided by Embodiment One of the present application;

[0041] Fig. 35 is a schematic view of the structure shown in Fig. 34 from another perspective;

[0042] Fig. 36 is a schematic view of the curling assembly, the first rotating shaft and the second rotating shaft in a second state provided by Embodiment One of the present application;

[0043] Fig. 37 is a schematic view of the structure shown in Fig. 36 from another perspective;

[0044] Fig. 38 is a schematic view of the first rotating shaft provided by Embodiment One of the present application;

[0045] Fig. 39 is a schematic view of the second rotating shaft provided by Embodiment One of the present application;

[0046] Fig. 40 is a state view of the first support provided by Embodiment Two of the present application after being unfolded;

[0047] Fig. 41 is a state diagram of the second support member being unfolded according to the second embodiment of the present application;

[0048] Fig. 42 is a front view of the support mechanism when not unfolded according to the second embodiment of the present application;

[0049] Fig. 43 is a state diagram of the first support member being unfolded according to the third embodiment of the present application;

[0050] Fig. 44 is a state diagram of the second support member being unfolded according to the third embodiment of the present application;

[0051] Fig. 45 is a front view of the support mechanism when not unfolded according to the third embodiment of the present application;

[0052] Fig. 46 is a schematic diagram of a display device according to the fourth embodiment of the present application when its rollable assembly is in a first state;

[0053] Fig. 47 is a schematic diagram of a display device according to the fourth embodiment of the present application when its rollable assembly is in a second state after being stretched bilaterally;

[0054] Fig. 48 is a first schematic diagram of a display device according to the fourth embodiment of the present application when its rollable assembly is in a second state after being stretched unilaterally;

[0055] Fig. 49 is a second schematic diagram of a display device according to the fourth embodiment of the present application when its rollable assembly is in a second state after being stretched unilaterally.

[0056] In the figures: 100, flexible display panel; 101, first surface; 102, second surface; 110, first portion; 120, second portion; 130, third portion; 10, support mechanism; 200, first support member; 201, first support surface; 210, first main body portion; 211, first recessed portion; 212, first protruding strip portion; 220, first connecting portion; 221, first flat portion; 222, first rollable portion; 2221, second toothed structure; 2222, second tooth groove; 300, second support member; 301, second support surface; 310, second main body portion; 311, second recessed portion; 312, second protruding strip portion; 320, second connecting portion; 321, second flat portion; 322, second rollable portion; 3221, fourth toothed structure; 3222, fourth tooth groove; 400, first rotating shaft; 410, first toothed structure; 420, first tooth groove; 500, second rotating shaft; 510, third toothed structure; 520, third tooth groove; 1, display device; 2, housing. DETAILED DESCRIPTION

[0057] The present application will be described in detail below with reference to the drawings and embodiments. The specific embodiments described herein are intended for explanation only. In the drawings, some or all of the structures related to the present application are shown for ease of description.

[0058] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the meaning of the above terms in this application can be understood as appropriate.

[0059] In this application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or indicates that the first feature is lower in horizontal height than the second feature.

[0060] In the description of the embodiments, the terms "up", "down", "left", "right" and other orientation or position relationships are based on the orientation or position relationships shown in the drawings, which are for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0061] Embodiment one:

[0062] The embodiment discloses a curling assembly, which can be used in a display device to serve as a display component of the display device. As shown in FIGS. 1-10, the curling assembly includes a flexible display panel 100 and a support mechanism 10.

[0063] Referring to FIGS. 1 and 6, the curling assembly includes a flexible display panel 100 and a support mechanism 10. The support mechanism 10 is located on a side of the flexible display panel 100 away from a light-out direction and is used to support the flexible display panel 100. The flexible display panel 100 is capable of being unfolded and rolled up in a second direction, as shown in FIGS. 1 and 6. The second direction has a forward direction and a reverse direction. At least one end of the flexible display panel 100 is capable of being unfolded to an unfolded state having a larger light-out surface and rolled up to a rolled-up state having a smaller light-out surface under the action of an external force.

[0064] The curling assembly has a first state and a second state. For the convenience of description, the rolled-up state is defined as the first state as shown in FIGS. 1-5, and the unrolled state is defined as the second state as shown in FIGS. 6-10. Referring to FIG. 3, in the first state, the flexible display panel 100 has a first surface 101 in the vertical light-emitting direction, i.e., the surface of the flexible display panel 100 in the virtual frame in the first state, and the area of the first surface 101 is denoted as S01. Referring to FIG. 8, in the second state, the flexible display panel 100 has a second surface 102 in the vertical light-emitting direction, i.e., the surface of the flexible display panel 100 in the virtual frame in the second state, and the area of the second surface 102 is denoted as S02, and the area of the first surface 101 is smaller than the area of the second surface 102. Referring to FIGS. 1 and 2, which are schematic diagrams of the curling assembly in the first state, i.e., the rolled-up state, the light-emitting direction of the flexible display panel 100 is the direction perpendicular to the paper surface and outward in FIG. 3. Perpendicular to the light-emitting direction, the flexible display panel 100 has the first surface 101, which includes a display area X1 and a non-display area NX1 surrounding the display area. FIGS. 6 and 7 are schematic diagrams of the curling assembly in the second state, i.e., the unrolled state. At this time, the light-emitting direction of the flexible display panel 100 is the same as that in the first state, and perpendicular to the light-emitting direction, the flexible display panel 100 has the second surface 102, which includes a display area X2 and a non-display area NX2 surrounding the display area. The second state, i.e., the unrolled state, is to unroll part of the flexible display panel 100 in the curled state, and this part of the flexible display panel 100 can be completely unrolled or partially unrolled. Whether it is completely unrolled or partially unrolled, it falls within the protection scope of the present application. Since the display area / light-emitting area of the flexible display panel 100 is increased in the unrolled state, i.e., the area of the second surface 102 is greater than the area of the first surface 101, the display area of the flexible display panel 100 can be freely adjusted as needed.

[0065] With continued reference to FIG. 1, the flexible display panel 100 is in the first state, the flexible display panel 100 includes a first portion 110, a second portion 120 and a third portion 130, the second portion 120 and the third portion 130 are formed on two sides of the first portion 110 in the second direction respectively, the first portion 110 is flat in the second direction, the second portion 120 and the third portion 130 are in the rolled state, and the first portion 110 has a first surface 101. With continued reference to FIG. 6, under the action of an external force, the second portion 120 can be unfolded in the reverse direction of the second direction, and the third portion 130 can be unfolded in the forward direction of the second direction, the first portion 110, the second portion 120 and the third portion 130 are connected to form a display surface / light emitting surface of the flexible display panel 100, and the flexible display panel 100 has a second surface 102. As described above, the second portion 120 and the third portion 130 do not need to be completely unfolded, and can be partially unfolded as needed to freely adjust the size of the display area.

[0066] In the embodiment, the second portion 120 and the third portion 130 of the flexible display panel 100 can both perform the rolling action and the unfolding action. When the flexible display panel 100 in the first state needs to be switched to the second state, i.e., switched from the state shown in FIG. 5 to the state shown in FIG. 10, the two ends of the flexible display panel 100 are stretched on both sides, i.e., the second portion 120 and the third portion 130 of the flexible display panel 100 in the rolled state can both be unfolded in the forward direction of the second direction or in the reverse direction of the second direction respectively; when the flexible display panel 100 in the second state needs to be switched to the first state, i.e., switched from the state shown in FIG. 10 to the state shown in FIG. 5, the two ends of the flexible display panel 100 are rolled on both sides, i.e., the second portion 120 and the third portion 130 of the flexible display panel 100 can both be rolled in the forward direction of the second direction or in the reverse direction of the second direction respectively.

[0067] With continued reference to FIG. 1 and FIG. 6, the support mechanism 10 includes a first support member 200 and a second support member 300 that cross and cooperate, the first support member 200 and the second support member 300 can move relative to each other in the second direction, i.e., when one of the first support member 200 and the second support member 300 moves in the forward direction of the second direction, the other moves in the reverse direction of the second direction. The first support member 200 and the second support member 300 are both supported at the flexible display panel 100 in the third direction.

[0068] Referring to FIG. 11 and FIG. 13, the first support member 200 has a first support surface 201 close to the flexible display panel 100, and the area of the first support surface 201 is S1, i.e. the sum of the areas of the portions of the first support member 200 within the dashed frame and capable of supporting the flexible display panel 100 is S1. Referring to FIG. 12 and FIG. 14, the second support member 300 has a second support surface 301 close to the flexible display panel 100, and the area of the second support surface 301 is S2, i.e. the sum of the areas of the portions of the second support member 300 within the dashed frame and capable of supporting the flexible display panel 100 is S2.

[0069] FIG. 11 is a schematic view of a first support member 200 in a second state; FIG. 12 is a schematic view of a second support member 300 in the second state; the first support member 200 shown in FIG. 11 can cooperate with the second support member 300 shown in FIG. 12 to form a support mechanism 10. FIG. 13 is a schematic view of another first support member 200 in the second state; FIG. 14 is a schematic view of another second support member 300 in the second state; the first support member 200 shown in FIG. 13 can cooperate with the second support member 300 shown in FIG. 14 to form a support mechanism 10.

[0070] The third direction is the light-out direction of the flexible display panel 100 or the direction perpendicular to the first surface 101 or the second surface 102 of the flexible display panel 100, and the second direction is the direction parallel to the first surface 101 or the second surface 102 of the flexible display panel 100. In an optional embodiment, the third direction is the vertical direction, and the second direction is the horizontal direction.

[0071] When the flexible display panel 100 in the first state is stretched bilaterally in the second direction, i.e. one of the second portion 120 and the third portion 130 of the flexible display panel 100 is unfolded in the positive direction of the second direction, and the other is unfolded in the negative direction of the second direction, the first support member 200 and the second support member 300 move in the negative direction of the second direction, i.e. one of the first support member 200 and the second support member 300 moves in the positive direction of the second direction, and the other moves in the negative direction of the second direction, and the first support surface 201 and the second support surface 301 both increase.

[0072] When the flexible display panel 100 in the second state is double-rolled in the second direction, i.e., one of the second portion 120 and the third portion 130 of the flexible display panel 100 is rolled in the positive direction of the second direction, and the other is rolled in the negative direction of the second direction, the first support 200 and the second support 300 move in the second direction, i.e., one of the first support 200 and the second support 300 moves in the positive direction of the second direction, and the other moves in the negative direction of the second direction, and the first support surface 201 and the second support surface 301 are both reduced.

[0073] Regardless of whether in the second state or in the first state, the height difference between the first support surface 201 and the second support surface 301 in the direction perpendicular to the flexible display panel 100 is within the error range. That is, regardless of whether the first support surface 201 or the second support surface 301, the distance between the flexible display panel 100 is always within the allowable error range, so that the support plane composed of the first support surface 201 and the second support surface 301 can stably support the flexible display panel 100.

[0074] And, in the first state and the second state, the sum of the areas of the first support surface 201 and the second support surface 301 is not less than the display area of the flexible display panel 100. That is, in the first state, the sum S of the area S1 of the first support surface 201 and the area S2 of the second support surface 301 is not less than the area S01 of the first surface 101 of the flexible display panel 100; and in the second state, the sum S of the area S1 of the first support surface 201 and the area S2 of the second support surface 301 is not less than the area S02 of the second surface 102 of the flexible display panel 100.

[0075] In some embodiments, the ratio of the sum S of the areas of the first support surface 201 and the second support surface 301 to the display area of the flexible display panel 100 is 1-1.2. That is, in the first state, the ratio Q1 of the sum S of the areas of the first support surface 201 and the second support surface 301 to the area S01 of the first surface 101 of the flexible display panel 100 is 1-1.2, and exemplarily, Q1 can be 1, 1.1 or 1.2, or other values within the range of 1-1.2. In the second state, the ratio Q2 of the sum S of the areas of the first support surface 201 and the second support surface 301 to the area S02 of the second surface 102 of the flexible display panel 100 is 1-1.2, and exemplarily, Q2 can be 1, 1.1 or 1.2, or other values within the range of 1-1.2.

[0076] By adjusting the shape of the first support 200 and the second support 300 that cross-fit, the size relationship between the area S1 of the first support surface 201 and the area S2 of the second support surface 301 can be changed. For example:

[0077] In one embodiment, referring to FIGS. 11 and 12, the first support 200 and the second support 300 have the same shape, and the area S1 of the first support surface 201 of the first support 200 and the area S2 of the second support surface 301 of the second support 300 are equal within an error range. That is, in the first state, the area S1 of the first support surface 201 and the area S2 of the second support surface 301 are equal within an error range; and in the second state, the area S1 of the first support surface 201 and the area S2 of the second support surface 301 are equal within an error range.

[0078] In one parallel embodiment, referring to FIGS. 13 and 14, the first support 200 and the second support 300 have different shapes, and the area S1 of the first support surface 201 of the first support 200 is greater than the area S2 of the second support surface 301 of the second support 300. That is, in the first state, the area S1 of the first support surface 201 is greater than the area S2 of the second support surface 301; and in the second state, the area S1 of the first support surface 201 is greater than the area S2 of the second support surface 301.

[0079] In other words, the first support surface 201 and the second support surface 301 are always coplanar and do not overlap; wherein during the unfolding process or the retracting process of the flexible display panel 100, the area of the first support surface 201 and the area of the second support surface 301 are synchronously increased or synchronously decreased with the display area of the flexible display panel 100, and in the direction perpendicular to the flexible display panel 100, the projection of the first support surface 201 on the flexible display panel 100 and the projection of the second support surface 301 on the flexible display panel 100 cover the flexible display panel 100.

[0080] Compared with the device in the related art which cannot achieve full support of the flexible display panel, the support mechanism 10 provided by the present application can support the flexible display panel 100 of any unfolded length without gaps, which not only improves the flatness of the flexible display panel 100, but also improves the touch performance and strength uniformity of the flexible display panel 100.

[0081] Referring to FIGS. 15 and 16, the first support 200 includes a first main body portion 210 and a first connecting portion 220 connected to each other, the first main body portion 210 is provided with a first recess portion 211 penetrating in the second direction, the first main body portion 210 forms a first protruding strip portion 212 on the side of the first recess portion 211 in the first direction, the first protruding strip portion 212 and the first recess portion 211 are adjacently arranged, and the first connecting portion 220 is connected to the first protruding strip portion 212. The top surface of the first protruding strip portion 212 in the third direction and the top surface of at least part of the first connecting portion 220 in the third direction constitute the first support surface 201. Optionally, the first recess portion 211 is a rectangular slot, and the first connecting portion 220 is a rectangular strip.

[0082] Referring to FIGS. 17 and 18, the second support 300 includes a second body portion 310 and a second connecting portion 320 connected to each other, the second body portion 310 has a second recess 311 penetratingly arranged in the second direction, the second body portion 310 forms a second protruding strip portion 312 on the side of the second recess 311 in the first direction, the second protruding strip portion 312 is arranged adjacent to the second recess 311, and the second connecting portion 320 is connected to the second protruding strip portion 312. The top surface of the second protruding strip portion 312 in the third direction and the top surface of at least part of the second connecting portion 320 in the third direction constitute a second support surface 301. Optionally, the second recess 311 is a rectangular slot, and the second connecting portion 320 is a rectangular strip.

[0083] Referring to FIGS. 19 to 26, when the first support 200 and the second support 300 are assembled into the support mechanism 10, the first body portion 210 and the second connecting portion 320 are arranged in a stacked manner in the third direction, and the second body portion 310 and the first connecting portion 220 are arranged in a stacked manner in the third direction, so that the first connecting portion 220 is slidably arranged in the second recess 311, and the second connecting portion 320 is slidably arranged in the first recess 211. In the first state, at least part of the first connecting portion 220 fills in the second recess 311, and at least part of the second connecting portion 320 fills in the first recess 211.

[0084] Referring to FIGS. 27 to 29, it is defined that the maximum thickness of the first body portion 210 is D, the depth of the first recess 211 is a first depth D1, the width of the first recess 211 is a first width W1, the length of the first recess 211 is a first length L1, the width of the first connecting portion 220 is a fourth width W4, the width of the first protruding strip portion 212 is a fifth width W5, and the thickness of the first connecting portion 220 is a second thickness H2.

[0085] Referring to FIGS. 30 to 32, it is defined that the depth of the second recess 311 is a second depth D2, the third thickness of the second recess 311 is H3, the third width of the second recess 311 is W3, the sixth width of the second protruding strip portion 312 is W6, the thickness of the second connecting portion 320 is a first thickness H1, the width of the second connecting portion 320 is a second width W2, and the length of the second recess 311 is a second length L2.

[0086] In some embodiments, in the direction perpendicular to the flexible display panel 100 (i.e., in the third direction), the first depth D1 of the first recess 211 is equal to the first thickness H1 of the second connecting portion 320 filled in the first recess 211, and the second depth D2 of the second recess 311 is equal to the second thickness H2 of the first connecting portion 220 filled in the second recess 311. In this way, the first support surface 201 and the second support surface 301 can be ensured to be at the same height.

[0087] In some embodiments, along the direction of the vertical flexible display panel 100, the maximum thickness D of the first body part 210 is equal to the sum of the second thickness H2 of the first connecting part 220 and the third thickness H3 of the second recess part 311 filled by the first connecting part 220. In this way, the overall thickness of the first support 200 can be guaranteed to be consistent with the overall thickness of the second support 300, which is conducive to improving the support effect of the entire support mechanism 10.

[0088] In some embodiments, along the first direction, the ratio of the first width W1 of the first recess part 211 to the second width W2 of the second connecting part 320 filled in the first recess part 211 is between 1-10:9. In this way, the second connecting part 320 can be smoothly filled into the first recess part 211, and the gap between the two can be small, which does not affect the support effect on the flexible display panel 100.

[0089] In some embodiments, the ratio of the third width W3 of the second recess part 311 to the fourth width W4 of the first connecting part 220 filled in the second recess part 311 is between 1-10:9. In this way, the first connecting part 220 can be smoothly filled into the second recess part 311, and the gap between the two can be small, which does not affect the support effect on the flexible display panel 100.

[0090] In some embodiments, along the first direction, the fourth width W4 of the first connecting part 220 is equal to the fifth width W5 of the first protruding strip part 212 connected thereto. In this way, the first support 200 is easy to manufacture, in addition, the hollow position between the first connecting parts 220 and the width of the first recess part 211 between the first protruding strip parts 212 are easy to control, and in the process of unfolding or rolling up, the gap between the second support 300 and the first support 200 is avoided to appear and the jamming phenomenon is avoided to appear, in addition, when the first connecting part 220 and the first protruding strip part 212 are integrally formed or integrally cut, the cutting trajectory does not need to be changed.

[0091] In some embodiments, the second width W2 of the second connecting part 320 is equal to the sixth width W6 of the second protruding strip part 312 connected thereto. In this way, the second support 300 is easy to manufacture, in addition, the hollow position between the second connecting parts 320 and the width of the second recess part 311 between the second protruding strip parts 312 are easy to control, and in the process of unfolding or rolling up, the gap between the second support 300 and the first support 200 is avoided to appear and the jamming phenomenon is avoided to appear, in addition, when the second connecting part 320 and the second protruding strip part 312 are integrally formed or integrally cut, the cutting trajectory does not need to be changed.

[0092] In some embodiments, the first lengths L1 of the at least two first recesses 211 are different. When the first lengths L1 of the first recesses 211 are different, the lengths of the second connecting portions 320 cooperating with the first recesses 211 are also different.

[0093] In one embodiment, the first lengths L1 of the first recesses 211 arranged adjacently are different, and are arranged in a long-short manner alternately. Alternatively, the first lengths L1 of the first recesses 211 in odd positions are long, and the first lengths L1 of the first recesses 211 in even positions are short. Alternatively, the first lengths L1 of the first recesses 211 in even positions are long, and the first lengths L1 of the first recesses 211 in odd positions are short.

[0094] In one parallel embodiment, along the first direction from the first end to the second end of the first main body portion 210, the first lengths L1 of the first recesses 211 on the first main body portion 210 increase or decrease successively.

[0095] In some embodiments, the second lengths L2 of the at least two second recesses 311 are different. When the second lengths L2 of the second recesses 311 are different, the lengths of the first connecting portions 220 cooperating with the second recesses 311 are also different.

[0096] In one embodiment, the second lengths L2 of the second recesses 311 arranged adjacently are different, and are arranged in a long-short manner alternately. Alternatively, the second lengths L2 of the second recesses 311 in odd positions are long, and the second lengths L2 of the second recesses 311 in even positions are short. Alternatively, the second lengths L2 of the second recesses 311 in even positions are long, and the second lengths L2 of the second recesses 311 in odd positions are short.

[0097] In one parallel embodiment, along the first direction from the first end to the second end of the second main body portion 310, the second lengths L2 of the second recesses 311 on the second main body portion 310 increase or decrease successively.

[0098] In some embodiments, along the direction perpendicular to the flexible display panel 100, the first recesses 211 have first depths D1, and the first depths D1 of the at least two first recesses 211 are different. When the first depths D1 of the first recesses 211 are different, the first thicknesses H1 of the second connecting portions 320 cooperating with the first recesses 211 are also different.

[0099] In some embodiments, the second recesses 311 have a second depth D2 in the direction of the vertically flexible display panel 100, and the second depths D2 of the at least two second recesses 311 are different. When the second depths D2 of the second recesses 311 are different, the second thicknesses H2 of the first connecting portions 220 cooperating with the second recesses 311 are also different.

[0100] In the present embodiment, the first support 200 and the second support 300 are laminated and fitted, the first body portion 210 and the second body portion 310 are arranged side by side in the second direction, and the bottom surface of the first body portion 210 and the bottom surface of the second body portion 310 are substantially in the same plane, i.e., the distance between the two bottom surfaces in the third direction is within an error range. The first recess 211 provides a space for accommodating the second connecting portion 320, and the second recess 311 provides a space for accommodating the first connecting portion 220. The top surface of the second connecting portion 320 embedded in the first recess 211 and the top surface of the first connecting portion 220 embedded in the second recess 311 are substantially in the same plane, i.e., the distance between the two top surfaces in the third direction is within an error range.

[0101] In other words, the maximum thickness of the first support 200 in the third direction is substantially equal to the maximum thickness of the second support 300 in the third direction, and substantially equal to the maximum thickness of the support mechanism 10 formed by laminating and fitting.

[0102] In the first state, the first point of the first body portion 210 and the second point of the second body portion 310 have a first distance therebetween; in the second state, the first point of the first body portion 210 and the second point of the second body portion 310 have a second distance therebetween, the second distance being greater than the first distance, and the first distance being greater than or equal to 0. The first point is shown as point A in FIGS. 22, 26, and 33, and the second point is shown as point B in FIGS. 22, 26, and 33. For the convenience of identification, the first point and the second point are both circled with “O”.

[0103] In one embodiment, as shown in FIG. 22, in the first state, the first body portion 210 and the second body portion 310 abut each other, so that the first distance between the first point A of the first body portion 210 and the second point B of the second body portion 310 is 0.

[0104] In another parallel embodiment, as shown in FIG. 33, in the first state, the first body portion 210 and the second body portion 310 are separated from each other, so that the first distance between the first point A of the first body portion 210 and the second point B of the second body portion 310 is greater than 0.

[0105] In the second state, as shown in FIGS. 25 and 26, the first body part 210 and the second body part 310 have a first gap J1 therebetween, and the first connecting part 220 and the second connecting part 320 are distributed in the first gap J1 in sequence. In the first state as shown in FIG. 33, the first body part 210 and the second body part 310 have a second gap J2 therebetween, and the length of the second gap J2 in the second direction is the first distance. Moreover, the length of the first gap J1 in the second direction is greater than the length of the second gap J2 in the second direction.

[0106] When the flexible display panel 100 in the first state is stretched in the second direction, the first support part 200 and the second support part 300 move relatively in the second direction, the first connecting part 220 moves in the second recess part 311, and the first connecting part 220 originally not in the second recess part 311 moves into the second recess part 311, so that the second recess part 311 is always filled. At the same time, the second connecting part 320 moves in the first recess part 211, and the second connecting part 320 originally not in the first recess part 211 moves into the first recess part 211, so that the first recess part 211 is always filled. Thus, the area of the first support surface 201 of the first support part 200 and the area of the second support surface 301 of the second support part 300 are always equal, and the sum of the areas of the first support surface 201 and the second support surface 301 is always not less than the display area of the flexible display panel 100.

[0107] The number of the first connecting part 220 can be one or more according to requirements, and the number of the second connecting part 320 can be one or more according to requirements.

[0108] When the first connecting part 220 is one, the first protruding strip part 212 is correspondingly one, and the first recess part 211 is formed on one side or both sides of the first protruding strip part 212, so that the first support part 200 is in the shape of “L” or “T”. When the second connecting part 320 is one, the second protruding strip part 312 is correspondingly one, and the second recess part 311 is formed on one side or both sides of the first protruding strip part 212, so that the first support part 200 is in the shape of “L” or “T”.

[0109] With continued reference to FIGS. 15 and 16, when the first connecting portion 220 is provided in a plurality, the first protruding strip portion 212 is correspondingly provided in a plurality, the plurality of first connecting portions 220 are arranged in the first direction in sequence with intervals, the first connecting portions 220 arranged in sequence with intervals are hollowly arranged between adjacent first connecting portions 220, and a first comb structure is formed. With continued reference to FIGS. 17 and 18, when the second connecting portion 320 is provided in a plurality, the second protruding strip portion 312 is correspondingly provided in a plurality, the plurality of second connecting portions 320 are arranged in the first direction with intervals, the plurality of second connecting portions 320 are arranged in the first direction in sequence with intervals, the second connecting portions 320 arranged in sequence with intervals are hollowly arranged between adjacent second connecting portions 320, and a second comb structure is formed.

[0110] In some embodiments, with continued reference to FIGS. 15 and 16, the first connecting portion 220 comprises a first flat portion 221 and a first curling portion 222 capable of curling, which are connected to each other. In the first state, the first flat portion 221 overlaps the second recessed portion 311 in the direction perpendicular to the flexible display panel 100; in the second state, at least part of the structure of the first curling portion 222 overlaps the second recessed portion 311.

[0111] With continued reference to FIGS. 17 and 18, the second connecting portion 320 comprises a second flat portion 321 and a second curling portion 322 capable of curling, which are connected to each other, and the second flat portion 321 overlaps the first recessed portion 211. In the first state, the second flat portion 321 overlaps the first recessed portion 211 in the direction perpendicular to the flexible display panel 100; in the second state, at least part of the structure of the second curling portion 322 overlaps the first recessed portion 211.

[0112] The first connecting portion 220 can be made of a single material. The first connecting portion 220 made of a single material not only has low cost, but also is convenient to manufacture.

[0113] In an optional embodiment, the first connecting portion 220 is a flexible structure capable of bending as a whole, for example, the first connecting portion 220 is an integrally formed rubber strip.

[0114] In another optional embodiment, the first connecting portion 220 is a rigid structure capable of curling, and the first connecting portion 220 is optionally a steel strip, similar to a “steel tape measure”.

[0115] Optionally, the first connecting portion 220 can also be made of multiple materials.

[0116] In an embodiment, the first curling portion 222 and the first flat portion 221 are made of different materials. Optionally, the first curling portion 222 is a rubber strip, and the first flat portion 221 is a steel strip. The first connecting portion 220 made of rigid and flexible materials has both support stability and deformation flexibility.

[0117] In another alternative embodiment, the first curved portion 222 comprises a plurality of flexible strips connected in sequence, at least some of which are made of different materials. For example, some of the plurality of flexible strips are made of rubber, and some are made of silica gel.

[0118] In another alternative embodiment, the first straight portion 221 comprises a plurality of rigid strips connected in sequence, at least some of which are made of different materials. For example, some of the plurality of rigid strips are made of stainless steel, and some are made of low-carbon alloy steel with different compositions.

[0119] The second connecting portion 320 can be made of a single material. The second connecting portion 320 made of a single material not only has a lower cost, but also is easy to manufacture.

[0120] In an alternative embodiment, the second connecting portion 320 is a flexible structure as a whole that can be bent, for example, the second connecting portion 320 is an integrally formed rubber strip.

[0121] In another alternative embodiment, the second connecting portion 320 is a rigid structure that can be curled, and optionally, the second connecting portion 320 is a steel strip, similar to a “steel tape measure”.

[0122] Optionally, the second connecting portion 320 is made of multiple materials.

[0123] In an alternative embodiment, the second curved portion 322 and the second straight portion 321 are made of different materials. Optionally, the second curved portion 322 is a rubber strip, and the second straight portion 321 is a steel strip. The second connecting portion 320 made of rigid and flexible materials has both support stability and flexible deformation.

[0124] In another alternative embodiment, the second curved portion 322 comprises a plurality of flexible strips connected in sequence, at least some of which are made of different materials. For example, some of the plurality of flexible strips are made of rubber, and some are made of silica gel.

[0125] In another alternative embodiment, the second straight portion 321 comprises a plurality of rigid strips connected in sequence and at least some of which can be curled, at least some of which are made of different materials. For example, some of the plurality of rigid strips are made of stainless steel, and some are made of low-carbon alloy steel with different compositions.

[0126] The material of the first connecting portion 220 and the second connecting portion 320 can be the same or different. That is, the first connecting portion 220 and the second connecting portion 320 can be both flexible strips or both rigid strips; one of the first connecting portion 220 and the second connecting portion 320 can be a flexible strip and the other can be a rigid strip; or one of the first connecting portion 220 and the second connecting portion 320 can be made of a single material and the other can be made of multiple materials.

[0127] With reference to FIGS. 34-37, to provide power to the flexible display panel 100 that needs to be stretched and contracted on both sides, the winding assembly further comprises a first rotating shaft 400 and a second rotating shaft 500. The first rotating shaft 400 is movable in the second direction and rotatable about its central axis (defined as the first axis). The second rotating shaft 500 is movable in the second direction and rotatable about its central axis (defined as the second axis).

[0128] The two ends of the flexible display panel 100 are respectively stacked with the two ends of the support mechanism 10. Alternatively, with reference to FIG. 34, the second portion 120 of the flexible display panel 100 is wound on the first rotating shaft 400, and the end of the first connecting portion 220 is also wound on the first rotating shaft 400. Under the action of an external force, the first rotating shaft 400 simultaneously moves in the second direction and rotates about the first axis. The movement in the second direction can simultaneously release and deploy the first connecting portion 220 and the flexible display panel 100 wound on the first rotating shaft 400, and the rotation about the first axis can push the first connecting portion 220 to move relative to the second support 300.

[0129] With reference to FIG. 34, the third portion 130 of the flexible display panel 100 is wound on the second rotating shaft 500, and the end of the second connecting portion 320 is also wound on the second rotating shaft 500. Under the action of an external force, the second rotating shaft 500 simultaneously moves in the second direction and rotates about the second axis. The movement in the second direction can simultaneously release and deploy the second connecting portion 320 and the flexible display panel 100 wound on the second rotating shaft 500, and the rotation about the second axis can push the second connecting portion 320 to move relative to the first support 200.

[0130] The rotation direction of the first rotating shaft 400 is different from the rotation direction of the second rotating shaft 500, that is, when one of the first rotating shaft 400 and the second rotating shaft 500 rotates clockwise, the other rotates counterclockwise, so as to realize the opposite movement or the back-to-back movement of the first support 200 and the second support 300.

[0131] With reference to FIGS. 15, 16 and 38, in order to improve the stability of the driving, the first rotating shaft 400 is provided as a gear shaft, and at least part of the first connecting portion 220 is provided as a rack. Optionally, the first rotating shaft 400 is provided with first toothed structures 410 and first tooth grooves 420 formed between the first toothed structures 410, and the first connecting portion 220 is provided with second toothed structures 2221 and second tooth grooves 2222 formed between adjacent second toothed structures 2221. The first toothed structures 410 and the first tooth grooves 420 are engaged with the second toothed structures 2221 and the second tooth grooves 2222. When the first rotating shaft 400 rotates around the first axis, the engagement between the first rotating shaft 400 and the first connecting portion 220 can make the first connecting portion 220 stably expand or retract, and the slippage phenomenon is less likely to occur.

[0132] With reference to FIGS. 17, 18 and 39, the second rotating shaft 500 is provided as a gear shaft, and at least part of the second connecting portion 320 is provided as a rack. Optionally, the second rotating shaft 500 is provided with third toothed structures 510 and third tooth grooves 520 formed between the third toothed structures 510, and with reference to FIGS. 10 and 11, the second connecting portion 320 is provided with fourth toothed structures 3221 and fourth tooth grooves 3222 formed between adjacent fourth toothed structures 3221. The third toothed structures 510 and the third tooth grooves 520 are engaged with the fourth toothed structures 3221 and the fourth tooth grooves 3222. When the second rotating shaft 500 rotates around the second axis, the engagement between the second rotating shaft 500 and the second connecting portion 320 can make the second connecting portion 320 stably expand or retract, and the slippage phenomenon is less likely to occur.

[0133] The curling assembly further comprises a first driving mechanism configured to drive the first rotating shaft 400 to move relatively in the second direction.

[0134] In an optional embodiment, the first driving mechanism is a mechanism capable of directly outputting linear motion, such as a linear motor, a pneumatic cylinder, etc. In another optional embodiment, the first driving mechanism is a combination of a power element capable of outputting rotational motion and a transmission structure capable of converting the rotational motion into linear motion, such as a combination of a motor and a gear rack, a combination of a motor and a screw nut, etc.

[0135] The first driving mechanism can not only drive the first rotating shaft 400 to move relatively in the second direction, but also drive the first rotating shaft 400 to rotate around the first axis. In an alternative embodiment, the first driving mechanism comprises a translational output module capable of outputting linear motion and a rotating output module capable of outputting rotary motion. The translational output module is the linear motor, the cylinder, the combination of the motor and the gear rack, the combination of the motor and the screw nut, etc. described above. The rotating output module is a rotary motor arranged at the output end of the translational output module. The motor shaft of the rotary motor can be directly connected coaxially with the first rotating shaft 400 or connected with the first rotating shaft 400 through a gear assembly.

[0136] The curling assembly further comprises a second driving mechanism configured to drive the second rotating shaft 500 to move relatively in the second direction.

[0137] In an alternative embodiment, the second driving mechanism is a mechanism capable of directly outputting linear motion, such as a linear motor or a cylinder. In another alternative embodiment, the second driving mechanism is a combination of a power member capable of outputting rotary motion and a transmission structure capable of converting rotary motion into linear motion, such as a combination of a motor and a gear rack or a combination of a motor and a screw nut.

[0138] The second driving mechanism can not only drive the second rotating shaft 500 to move relatively in the second direction, but also drive the second rotating shaft 500 to rotate around the second axis. In an alternative embodiment, the second driving mechanism comprises a translational output module capable of outputting linear motion and a rotating output module capable of outputting rotary motion. The translational output module is the linear motor, the cylinder, the combination of the motor and the gear rack, the combination of the motor and the screw nut, etc. described above. The rotating output module is a rotary motor arranged at the output end of the translational output module. The motor shaft of the rotary motor can be directly connected coaxially with the second rotating shaft 500 or connected with the second rotating shaft 500 through a gear assembly.

[0139] When the flexible display panel 100 switches between the second state and the first state, the relative movement of the first support 200 and the second support 300 will inevitably cause wear to the flexible display panel 100. In order to protect the flexible display panel 100 and prolong the service life of the flexible display panel 100, the curling assembly further comprises a protective layer arranged between the flexible display panel 100 and the support mechanism 10.

[0140] In an optional embodiment, the protective layer is a silica gel layer, the silica gel layer is arranged between the flexible display panel 100 and the support mechanism 10, the silica gel layer is attached to the flexible display panel 100, and the two ends of the silica gel layer are also wound on the first rotating shaft 400 and the second rotating shaft 500 respectively. The silica gel layer has a buffering effect and can reduce the impact of external force on the flexible display panel 100, thereby playing a protective role.

[0141] The area of the protective layer is not less than the maximum support area of the support mechanism 10 after being unfolded, so that the flexible display panel 100 and the support mechanism 10 can be effectively isolated in all directions, thereby avoiding wear of the flexible display panel 100. In an optional embodiment, the protective layer completely covers the flexible display panel 100 of the flexible display panel 100.

[0142] The protective layer can also be made of other materials according to requirements. The protective layer can be a single-layer structure or a multi-layer structure.

[0143] In another optional embodiment, the protective layer includes a medium layer, a protective layer, and a silica gel layer. The medium layer can be a glue layer, and the protective layer can be attached to the flexible display panel 100 through the medium layer. The protective layer can be a tempered glass layer or a resin layer, and the overall strength and impact resistance can be improved by arranging the protective layer. The silica gel layer has a buffering effect.

[0144] In order to improve the support stability of the support mechanism 10 to the flexible display panel 100, the support mechanism 10 further includes a third support member, the third support member is arranged on the side of the first support member 200 and the second support member 300 away from the flexible display panel 100 in a third direction, and the third support member abuts with at least one of the first support member 200 and the second support member 300, so that the first support member 200 and the second support member 300 can abut with the protective layer to stably support the flexible display panel 100.

[0145] In an optional embodiment, the third support member includes an elastic body and a support plate, the bottom end of the elastic body is fixedly arranged, the top end of the elastic body is connected with the support plate, and the support plate elastically abuts on the first support member 200 and the second support member 300 under the action of the elastic body. Optionally, the third support member is provided in plurality, and the plurality of third support members are arranged at intervals, for example, in a row and column arrangement. Optionally, the elastic body is a spiral spring, and the support plate is a rectangular plate.

[0146] Embodiment two:

[0147] The embodiment discloses a curling assembly, and the main difference between the structure of the curling assembly provided by the embodiment and the structure of the curling assembly provided by the first embodiment is that: 1, the unfolding mode and the retracting mode of the flexible display panel 100 are different; 2, the structure of the support mechanism 10 is different.

[0148] In the present embodiment, the flexible display panel 100 has one end (defined as the fixed end) fixedly arranged and unable to perform the rolling and unrolling actions, and the other end (defined as the movable end) capable of performing the rolling and unrolling actions. When the flexible display panel 100 in the first state needs to switch to the second state, the movable end of the flexible display panel 100 is stretched on one side, and the movable end in the rolled state is capable of performing the unrolling action in the second direction; when the flexible display panel 100 in the second state needs to switch to the first state, the movable end of the flexible display panel 100 is contracted on one side, i.e., the movable end of the flexible display panel 100 is capable of performing the rolling action in the second direction.

[0149] As shown in FIGS. 40-42, the support mechanism 10 includes a first support member 200 and a second support member 300 cross-coupled and capable of moving relative to each other in the second direction. The first support member 200 and the second support member 300 are each supported at the flexible display panel 100 along the third direction. The first support member 200 has a first support surface 201 facing the flexible display panel 100, and the second support member 300 has a second support surface 301 facing the flexible display panel 100.

[0150] When the flexible display panel 100 in the first state is stretched on one side in the second direction, one of the first support member 200 and the second support member 300 moves in the second direction away from the other. When the flexible display panel 100 in the second state is contracted on one side in the second direction, one of the first support member 200 and the second support member 300 moves in the second direction toward the other.

[0151] Regardless of whether in the first state or in the second state, the height difference between the first support surface 201 and the second support surface 301 in the direction perpendicular to the flexible display panel 100 is within an error range. That is, regardless of whether the first support surface 201 or the second support surface 301, the distance between the flexible display panel 100 is always within an allowable error range, so that the support plane formed by the first support surface 201 and the second support surface 301 can stably support the flexible display panel 100.

[0152] Also, in the first state and the second state, the sum of the areas of the first support surface 201 and the second support surface 301 is not less than the display area of the flexible display panel 100. Optionally, in some embodiments, the ratio of the sum of the areas of the first support surface 201 and the second support surface 301 to the display area of the flexible display panel 100 is 1-1.2.

[0153] In one embodiment, the area of the first supporting surface 201 of the first supporting member 200 and the area of the second supporting surface 301 of the second supporting member 300 are always equal, and the sum of the areas of the first supporting surface 201 and the second supporting surface 301 is always not less than the display area of the flexible display panel 100.

[0154] In one parallel embodiment, the area of the first supporting surface 201 of the first supporting member 200 is greater than the area of the second supporting surface 301 of the second supporting member 300, and the sum of the areas of the first supporting surface 201 and the second supporting surface 301 is always not less than the display area of the flexible display panel 100.

[0155] In other words, the first supporting surface 201 and the second supporting surface 301 are always coplanar and do not overlap; wherein during the unfolding process or the retraction process of the flexible display panel 100, the area of the first supporting surface 201 and the area of the second supporting surface 301 increase or decrease synchronously with the display area of the flexible display panel 100, and in the direction perpendicular to the flexible display panel 100, the projection of the first supporting surface 201 on the flexible display panel 100 and the projection of the second supporting surface 301 on the flexible display panel 100 cover the flexible display panel 100.

[0156] Compared with the device in the related art which cannot realize full support of the flexible display panel, the supporting mechanism 10 provided by the present application can support the flexible display panel 100 of any unfolded length without gap, which not only improves the flatness of the flexible display panel 100, but also improves the touch performance and strength uniformity of the flexible display panel 100.

[0157] The area of the first supporting surface 201 in the first state is less than the area in the second state, and the area of the second supporting surface 301 in the first state is less than the area in the second state. Since either end of the flexible display panel 100 can be used as a fixed end, the other end can be used as a movable end. In order to facilitate subsequent description, the first supporting member 200 is fixedly arranged, the second supporting member 300 is movably arranged, and the end of the flexible display panel 100 corresponding to the first supporting member 200 is defined as the fixed end, and the end of the flexible display panel 100 corresponding to the second supporting member 300 is defined as the movable end.

[0158] Referring to FIG. 40, the fixedly disposed first support 200 includes a first body portion 210 and a first connecting portion 220 connected to each other, the first body portion 210 has a first support surface 201 which is a plane toward the flexible display panel 100, and the first connecting portion 220 has a fourth width W4 in the first direction which is smaller than a width of the first body portion 210 in the first direction, so that one side of the first connecting portion 220 in the first direction forms a first gap. The top surface of the first body portion 210 in the third direction and the top surface of at least part of the first connecting portion 220 in the third direction constitute the first support surface 201.

[0159] Referring to FIG. 41, the movably disposed second support 300 includes a second body portion 310 and a second connecting portion 320, the second body portion 310 has a second recess 311 disposed through the second body portion 310 in the second direction, in the first direction, the second body portion 310 forms a second protruding strip portion 312 on a side of the second recess 311, the second protruding strip portion 312 is disposed adjacent to the second recess 311, and the second connecting portion 320 is connected to the second protruding strip portion 312. The top surface of the second body portion 310 in the third direction and the top surface of the second connecting portion 320 in the third direction constitute a second support surface 301.

[0160] Referring to FIG. 42, when the first support 200 and the second support 300 are assembled into the support mechanism 10 in the first state, part of the first connecting portion 220 can be disposed in the second recess 311, the second protruding strip portion 312 fills in the first gap, and the second connecting portion 320 is entirely hidden on a side of the first body portion 210 away from the flexible display panel 100. When the flexible display panel 100 is switched from the first state to the second state, the first connecting portion 220 located outside the second recess 311 gradually fills into the second recess 311, and the second connecting portion 320 gradually fills into the first gap in which a gap appears.

[0161] Optionally, the first connecting portion 220 includes a first flat portion 221 and a first curled portion 222 connected to each other, and the second connecting portion 320 includes a second flat portion 321 and a second curled portion 322 connected to each other, the second flat portion 321 is connected to the second protruding strip portion 312.

[0162] When the first support 200 and the second support 300 are assembled into the support mechanism 10 in the first state, the first flat portion 221 can fill in the second recess 311, the second flat portion 321 fills in the first gap, and the second curled portion 322 is hidden on a side of the second flat portion 321 away from the flexible display panel 100. When the flexible display panel 100 is in the second state, at least part of the first curled portion 222 is unfolded and fills into the second recess 311, and at least part of the second curled portion 322 is unfolded and fills into the first gap.

[0163] The number of the first connecting portions 220 and the number of the second connecting portions 320 have been introduced in Embodiment One, and will not be repeated here. The material of the first connecting portions 220 and the second connecting portions 320 have also been introduced in Embodiment One, and will not be repeated here.

[0164] In order to provide power for the flexible display panel 100 which needs to be stretched on one side and contracted on one side, the winding assembly comprises a first rotating shaft 400 and a third rotating shaft which are arranged at intervals, the first rotating shaft 400 can move along the second direction and rotate around the first axis, and the third rotating shaft can only rotate around the central axis of itself (defined as the third rotating shaft).

[0165] The movable end of the flexible display panel 100 and part of the first connecting portions 220 are wound on the first rotating shaft 400, the fixed end of the flexible display panel 100 is fixedly arranged on the first main body portion 210, and part of the second connecting portions 320 are wound on the third rotating shaft. Under the action of external force, the first rotating shaft 400 moves along the second direction and rotates around the first axis at the same time, so as to realize the simultaneous release and unfolding of the second connecting portions 320 wound on the first rotating shaft 400 and the movable end of the flexible display panel 100; and with the rotation of the third rotating shaft, the third rotating shaft can release the second connecting portions 320 in the second direction by rotating around the third axis.

[0166] In order to improve the stability of driving, the first rotating shaft 400 is provided as the gear shaft in Embodiment One, and at least part of the first connecting portions 220 is provided as the rack. Optionally, the first rotating shaft 400 is provided with a first tooth-shaped structure 410 and a first tooth groove 420 formed between the first tooth-shaped structures 410, and the first connecting portions 220 are provided with a second tooth-shaped structure 2221, and a second tooth groove 2222 is formed between adjacent second tooth-shaped structures 2221. The first tooth-shaped structure 410 and the first tooth groove 420 are engaged with the second tooth-shaped structure 2221 and the second tooth groove 2222. When the first rotating shaft 400 rotates around the first axis, the mutual engagement between the first rotating shaft 400 and the first connecting portions 220 can make the first connecting portions 220 stably expand or retract, and it is not easy to slip.

[0167] The third rotating shaft is provided as a gear shaft, and at least part of the second connecting portions 320 is provided as a rack. Optionally, the third rotating shaft is provided with a fifth tooth-shaped structure and a fifth tooth groove formed between the fifth tooth-shaped structures, and the second connecting portions 320 are provided with a fourth tooth-shaped structure 3221, and a fourth tooth groove 3222 is formed between adjacent fourth tooth-shaped structures 3221. The fifth tooth-shaped structure and the fifth tooth groove are engaged with the fourth tooth-shaped structure 3221 and the fourth tooth groove 3222. When the third rotating shaft rotates around the third axis, the mutual engagement between the third rotating shaft and the second connecting portions 320 can make the second connecting portions 320 stably expand or retract, and it is not easy to slip.

[0168] The curling assembly further comprises a first driving mechanism configured to drive the first rotating shaft 400 to move relatively in the second direction. The specific structure of the first driving mechanism has been described in detail in Embodiment One, which will not be repeated here.

[0169] The curling assembly further comprises a third driving mechanism configured to drive the third rotating shaft to rotate around the third axis. Optionally, the third driving mechanism can be a rotary motor, and the motor shaft of the rotary motor can be directly coaxially connected with the third rotating shaft or connected with the third rotating shaft through a gear assembly.

[0170] When the flexible display panel 100 is switched between the second state and the first state, the movement of the second support 300 relative to the first support 200 will inevitably cause wear to the flexible display panel 100. In order to protect the flexible display panel 100 and prolong the service life of the flexible display panel 100, the curling assembly further comprises a protective layer arranged between the flexible display panel 100 and the support mechanism 10. The structure of the protective layer has been described in Embodiment One, which will not be repeated here.

[0171] In order to improve the support stability of the support mechanism 10 to the flexible display panel 100, the support mechanism 10 further comprises a third support arranged in the third direction on the side of the first support 200 and the second support away from the flexible display panel 100, and the third support abuts against at least one of the first support 200 and the second support 300, so that the first support 200 and the second support 300 can abut against the protective layer to stably support the flexible display panel 100. The structure of the third support has been described in Embodiment One, which will not be repeated here.

[0172] Embodiment Three:

[0173] The curling assembly provided in the present embodiment is different from the curling assembly provided in Embodiment One in that the structure of the support mechanism 10 is different.

[0174] Referring to FIG. 43, in the present embodiment, the first support 200 comprises a first main body portion 210 and a first connecting portion 220 connected with each other, the first support surface 201 on the side of the first main body portion 210 facing the flexible display panel 100 is a plane, the fourth width W4 of the first connecting portion 220 in the first direction is smaller than the width of the first main body portion 210 in the first direction, so that one side of the first connecting portion 220 in the first direction forms a first gap, and the first connecting portion 220 comprises a first flat portion 221 and a first curling portion 222 connected with each other.

[0175] Referring to FIG. 44, the second support member 300 includes a second body portion 310 and a second connecting portion 320 connected to each other, the second body portion 310 has a flat second support surface 301 facing the flexible display panel 100, the second connecting portion 320 has a second width W2 in the first direction smaller than a width of the second body portion 310 in the first direction, such that one side of the second connecting portion 320 in the first direction forms a second gap, and the second connecting portion 320 includes a second flat portion 321 and a second curled portion 322 connected to each other.

[0176] Referring to FIG. 45, in the first state, the first flat portion 221 fills in the second gap, the first curled portion 222 is hidden at a side of the first flat portion 221 facing away from the flexible display panel 100, the second flat portion 321 fills in the first gap, and the second curled portion 322 is hidden at a side of the second flat portion 321 facing away from the flexible display panel 100. In the second state, at least part of the first curled portion 222 is unfolded and fills in the second gap, and at least part of the second curled portion 322 is unfolded and fills in the first gap.

[0177] The number of the first connecting portions 220 and the number of the second connecting portions 320 have been described in Embodiment One, and will not be repeated here. The material of the first connecting portions 220 and the second connecting portions 320 have also been described in Embodiment One, and will not be repeated here.

[0178] In order to provide power for the flexible display panel 100 that needs to be stretched on one side and contracted on one side, the curled assembly further includes a first rotating shaft 400 and a second rotating shaft 500, the first rotating shaft 400 is movable in the second direction and rotatable about a first axis, and the second rotating shaft 500 is movable in the second direction and rotatable about a second axis. One end of the flexible display panel 100 is wound around the first rotating shaft 400, and the other end of the flexible display panel 100 is wound around the second rotating shaft 500. The first rotating shaft 400 can release the flexible display panel 100 in the second direction by rotating about the first axis, and the second rotating shaft 500 can release the flexible display panel 100 in the second direction by rotating about the second axis.

[0179] In order to provide power for the relative movement of the first support member 200 and the second support member 300, the curled assembly further includes a third rotating shaft and a fourth rotating shaft. The second connecting portion 320 is partially wound around the third rotating shaft, and the first connecting portion 220 is partially wound around the fourth rotating shaft. The third rotating shaft can release the second connecting portion 320 in the second direction by rotating about a third axis, and the fourth rotating shaft can release the first connecting portion 220 in the second direction by rotating about a fourth axis.

[0180] The curling assembly further comprises a first driving mechanism configured to drive the first rotating shaft 400 and a second driving mechanism configured to drive the second rotating shaft 500. The structures of the first driving mechanism and the second driving mechanism have been described in Embodiment One and will not be repeated here.

[0181] The curling assembly further comprises a third driving mechanism configured to drive the third rotating shaft and a fourth driving mechanism configured to drive the fourth rotating shaft. The structure of the third driving mechanism has been described in Embodiment Two and will not be repeated here. The fourth driving mechanism can adopt the same mechanism as the third driving mechanism and will not be described in detail here.

[0182] Embodiment Four:

[0183] As shown in FIGS. 46-49, on the basis of Embodiments One to Three, the present embodiment further provides a display device 1 comprising the curling assembly provided in Embodiments One to Three and a housing 2 connected with the curling assembly to fix and protect the curling assembly. By using the curling assembly described above, the flatness of the flexible display panel 100 after being unfolded is high, and the user's experience of touching the flexible display panel 100 is good.

[0184] As shown in FIG. 46, it is a schematic view of the display device 1 when the curling assembly in Embodiments One to Three is in the first state (i.e., the rolled-up state). In this state, in Embodiment One, the curling assembly is in the state shown in FIGS. 1-5, the flexible display panel 100 has a smaller light-emitting surface as shown in FIG. 3, and the support mechanism 10 is in the state shown in FIGS. 19-22. In Embodiment Two, the support mechanism 10 is in the state shown in FIG. 42. In Embodiment Three, the support mechanism 10 is in the state shown in FIG. 45.

[0185] As shown in FIG. 47, it is a schematic view of the display device 1 when the curling assembly in Embodiments One and Three is in the second state (i.e., the unfolded state). The dashed line in FIG. 47 is the boundary line of the flexible display panel 100 when it is not unfolded (i.e., the solid boundary line at the corresponding position of the flexible display panel 100 shown in FIG. 46), and the flexible display panel 100 can be unfolded to the state shown in FIG. 47 by stretching it on both sides.

[0186] In this state, in Embodiment One, the curling assembly is in the state shown in FIGS. 6-10, the flexible display panel 100 has a larger light-emitting surface as shown in FIG. 8, and the support mechanism 10 is in the state shown in FIGS. 23-26. In Embodiment Three, the first support member 200 of the curling assembly is in the state shown in FIG. 40, and the second support member 300 is in the state shown in FIG. 41.

[0187] Figures 48 and 49 are schematic diagrams of the display device 1 when the roll assembly in Example Two is in the second state (i.e. the unfolded state). The dotted lines in Figure 48 are the boundary lines of the flexible display panel 100 when it is not unfolded (i.e. the solid boundary lines in the corresponding positions of the flexible display panel 100 shown in Figure 46), and the flexible display panel 100 can be unfolded to the state shown in Figure 48 by unilaterally stretching the flexible display panel 100 shown in Figure 46.

[0188] The difference between the structures shown in Figures 48 and 49 is that the direction of unfolding of the flexible display panel 100 is different, with Figure 48 showing unfolding to the left and Figure 49 showing unfolding to the right. In this state, in Example Two, the first support 200 of the roll assembly is in the state shown in Figure 43 and the second support 300 is in the state shown in Figure 44.

[0189] The display device provided by the present application comprises a roll assembly which can support the flexible display panel without gaps by means of a support mechanism, thereby not only improving the flatness of the flexible display panel but also improving the touch performance and strength uniformity of the display device, thereby improving the performance of the display device.

Claims

1. A curling assembly, comprising a flexible display panel and a support mechanism located away from a light-outcoming surface of the flexible display panel; the support mechanism comprises a first support member and a second support member cross-fitted, the first support member has a first support surface close to the flexible display panel, the second support member has a second support surface close to the flexible display panel, a height difference between the first support surface and the second support surface in a direction perpendicular to the flexible display panel is within an error range; the curling assembly has a first state and a second state, in the first state, the flexible display panel has a first surface in a direction perpendicular to a light-outcoming direction, in the second state, the flexible display panel has a second surface in the direction perpendicular to the light-outcoming direction, an area of the first surface is smaller than an area of the second surface; in the first state, a sum of areas of the first support surface and the second support surface is not less than the area of the first surface, in the second state, the sum of the areas of the first support surface and the second support surface is not less than the area of the second surface.

2. The crimp assembly of claim 1, wherein, the area of the first support surface is greater than or equal to the area of the second support surface.

3. The crimp assembly of claim 2, wherein, the first support member has a first main body portion and a first connecting portion connected to each other, the second support member has a second main body portion and a second connecting portion connected to each other; a plurality of the first connecting portions are arranged in sequence and spaced apart in a first direction, and the first connecting portions are hollowed out between them; a plurality of the second connecting portions are arranged in sequence and spaced apart in the first direction, and the second connecting portions are hollowed out between them; in the first state, a first point of the first main body portion and a second point of the second main body portion have a first distance therebetween, in the second state, the first point of the first main body portion and the second point of the second main body portion have a second distance therebetween, the second distance is greater than the first distance, and the first distance is greater than or equal to 0.

4. The crimp assembly of claim 3, wherein, the first main body portion has a first protruding strip portion connected to the first connecting portion, in the first direction, a side of the first protruding strip portion forms a first recess portion, and the first protruding strip portion is arranged adjacent to the first recess portion; the second main body portion has a second protruding strip portion connected to the second connecting portion, in the first direction, a side of the second protruding strip portion forms a second recess portion, and the second protruding strip portion is arranged adjacent to the second recess portion; the first protruding strip portion and at least part of the first connecting portions constitute the first support surface, and the second protruding strip portion and at least part of the second connecting portions constitute the second support surface; in the first state, at least part of the first connecting portions are filled in the second recess portion, and at least part of the second connecting portions are filled in the first recess portion.

5. The crimp assembly of claim 4, wherein, the area of the first support surface in the first state is smaller than the area in the second state, and the area of the second support surface in the first state is smaller than the area in the second state.

6. The crimp assembly of claim 4, wherein, In a direction perpendicular to the flexible display panel, a first depth D1 of the first recess is equal to a first thickness H1 of the second connecting part filled in the first recess, and a second depth D2 of the second recess is equal to a second thickness H2 of the first connecting part filled in the second recess.

7. The crimp assembly of claim 4, wherein, In a direction perpendicular to the flexible display panel, a maximum thickness D of the first main body part is equal to a sum of the second thickness H2 of the first connecting part and a third thickness H3 of the second recess filled by the first connecting part.

8. The crimp assembly of claim 5, wherein, In the first direction, a ratio of a first width W1 of the first recess to a second width W2 of the second connecting part filled in the first recess is between 1-10:9, and a ratio of a third width W3 of the second recess to a fourth width W4 of the first connecting part filled in the second recess is between 1-10:

9.

9. The crimp assembly of claim 7, wherein, In the first direction, the fourth width W4 of the first connecting part is equal to a fifth width W5 of the first protruding strip part connected with the first connecting part, and the second width W2 of the second connecting part is equal to a sixth width W6 of the second protruding strip part connected with the second connecting part.

10. The crimp assembly of claim 4, wherein, In the first state, the first main body part and the second main body part are in contact; In a second direction, the first recess has a first length L1, and the first lengths L1 of at least two first recesses are different; the second recess has a second length L2, and the second lengths L2 of at least two second recesses are different.

11. The crimp assembly of claim 10, wherein, In the first direction, the first lengths L1 of the first recesses arranged adjacently are different and arranged in a long-short alternating manner; In the first direction, the second lengths L2 of the second recesses arranged adjacently are different and arranged in a long-short alternating manner.

12. The crimp assembly of claim 10, wherein, In the first direction, from a first end to a second end of the first main body part, the first lengths L1 of the first recesses on the first main body part sequentially increase or sequentially decrease; In the first direction, from a first end to a second end of the second main body part, the second lengths L2 of the second recesses on the second main body part sequentially increase or sequentially decrease.

13. The crimp assembly of claim 4, wherein, In a direction perpendicular to the flexible display panel, the first recess has a first depth D1, and the first depths D1 of at least two first recesses are different; In a direction perpendicular to the flexible display panel, the second recess has a second depth D2, and the second depths D2 of at least two second recesses are different.

14. The crimp assembly of claim 3, wherein, In the second state, a first gap J1 is formed between the first main body part and the second main body part, and the first connecting part and the second connecting part are sequentially and crossly distributed in the first gap J1.

15. The crimp assembly of claim 4, wherein, The first connecting part comprises a first flat part and a first curled part connected with each other; The second connecting part comprises a second flat part and a second curled part connected with each other; In the first state, in a direction perpendicular to the flexible display panel, the first flat part overlaps with the second recess, and the second flat part overlaps with the first recess; In the second state, the first curled portion at least partially overlaps the second recess, and the second curled portion at least partially overlaps the first recess.

16. The crimp assembly of claim 15, wherein, The first main body portion and the first flat portion are rigid structures, the second main body portion and the second flat portion are rigid structures, and the first curled portion and the second curled portion comprise a curlable material.

17. The crimp assembly of claim 16, wherein, The first curled portion and the second curled portion are rubber strips. The first flat portion and the second flat portion are steel strips.

18. The crimp assembly of claim 16, wherein, The first flat portion and the second flat portion each comprise a plurality of rigid strips connected in sequence, and at least some of the plurality of rigid strips are made of different materials. The first curled portion and the second curled portion each comprise a plurality of flexible strips connected in sequence, and at least some of the plurality of flexible strips are made of different materials.

19. The curled assembly of claim 16, further comprising a first rotating shaft and a second rotating shaft, the first rotating shaft being provided with a first toothed structure and a first tooth gap formed between the first toothed structure, and the second rotating shaft being provided with a third toothed structure and a third tooth gap formed between the third toothed structure. The first curled portion is provided with a second toothed structure, and a second tooth gap is formed between the second toothed structure, and the second curled portion is provided with a fourth toothed structure, and a fourth tooth gap is formed between the fourth toothed structure. The first toothed structure and the first tooth gap are engaged with the second toothed structure and the second tooth gap. The third toothed structure and the third tooth gap are engaged with the fourth toothed structure and the fourth tooth gap.

20. The crimp assembly of claim 19, wherein, The flexible display panel comprises a first portion, and a second portion and a third portion connected to the first portion and located at both ends of the first portion. In the first state, perpendicular to the direction of the flexible display panel, the first portion overlaps the first main body portion and the second main body portion, the second portion overlaps the first curled portion, and the third portion overlaps the second curled portion.

21. A display device comprising the curled assembly of any one of claims 1-20 and a housing.

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