Display device

Abstract

The invention discloses a display device which comprises a frame, a flexible display module, a conveying mechanism and a supporting mechanism. The flexible display module can be folded in a containing groove of the frame in a bending mode and is provided with a side edge. The conveying mechanism comprises a conveying assembly and a chain assembly. The chain assembly is arranged on the flexible display module. The conveying assembly is arranged on the frame and suitable for driving the chain assembly to move. The supporting mechanism is arranged on the frame and pivoted to the side edge. When the flexible display module is in a folding mode, the conveying mechanism drives the chain assembly to move in the folding direction, so that the flexible display module is bent to move into the containing groove in the folding direction. When the flexible display module is in an unfolding mode, the conveying mechanism drives the chain assembly to move along an unfolding direction opposite to the folding direction, so that the flexible display module is moved out of the accommodating groove along the unfolding direction.

Description

Technical Field

[0001] The present invention relates to a display device, and in particular to a flexible display device. Background Art

[0002] In the current market, some vehicles have a center information display on the center console between the driver and the front passenger seat to display various information such as vehicle status information and provide an interface for interacting with the vehicle. Some center information displays are retractable so that they can be folded and hidden in the center console when not in use to gain more space inside the vehicle. If a flexible screen is further adopted, the space can be used more flexibly.

[0003] Traditional roll-up displays roll up the flexible screen like a scroll. However, during the rolling process, the display will experience large-area stretching or compression, requiring a large bending radius, occupying more space and limiting the choice of materials. Therefore, the market needs a central control display design that has both a flexible screen and a small bending radius. Summary of the invention

[0004] The present invention provides a display device, which has a small bending radius, is convenient to fold and unfold, and helps to save space.

[0005] The display device of the present invention includes a frame, a flexible display module, a conveying mechanism and a supporting mechanism. The frame has a receiving groove. The flexible display module can be bent and folded in the receiving groove and has a side. The conveying mechanism includes a conveying component and a chain component. The chain component is arranged on the flexible display module. The conveying component is arranged on the frame and is suitable for driving the chain component to move. The supporting mechanism is arranged on the frame and is pivotally connected to the side. When the flexible display module is in a folded mode, the conveying mechanism drives the chain component to move along a folded direction so that the flexible display module is bent and moved along the folded direction into the receiving groove, and the flexible display module is folded in the receiving groove. When the flexible display module is in an unfolded mode, the conveying mechanism drives the chain component to move along an unfolding direction opposite to the folding direction so that the flexible display module moves out of the receiving groove along the unfolding direction. The supporting mechanism supports the flexible display module so that the flexible display module extends perpendicular to the unfolding direction.

[0006] In one embodiment of the present invention, the side edge includes two ends and a central area between the two ends. The flexible display module has a first bending point and two second bending points. The first bending point is located in the central area. When the flexible display module is folded or unfolded in the frame, the two second bending points move along the side edge between the two ends.

[0007] In one embodiment of the present invention, the chain assembly includes a carrier assembly and a plurality of chain units. The carrier assembly is disposed on the back of the flexible display module and includes a plurality of carrier units. The carrier units are rotatably connected in sequence. The chain units are rotatably connected in sequence and are respectively fixed to the carrier units. Each chain unit is provided with a driven gear.

[0008] In one embodiment of the present invention, the above-mentioned conveying assembly includes a first gear, a second gear, a transmission belt and a rack. The first gear and the second gear are separated from each other and rotatably arranged on the frame. The transmission belt is sleeved on the first gear and the second gear. The rack is fixed to the transmission belt and meshed with the driven gear, and is movably arranged on the frame. When the first gear drives the transmission belt to move, the flexible display module is driven by the transmission belt and the rack, and moves in a bending manner along the folding direction into the receiving groove or moves out of the receiving groove along the unfolding direction.

[0009] In one embodiment of the present invention, the above-mentioned receiving groove has a central axis parallel to the folding direction, and the flexible display module moves into or out of the receiving groove symmetrically with respect to the central axis.

[0010] In one embodiment of the present invention, the flexible display module has a first area and a second area. The first area and the second area are facing away from the frame. The first area and the second area form a display area, and the area of ​​the display area is suitable for changing as the flexible display module is folded or unfolded on the frame.

[0011] In one embodiment of the present invention, the display device further comprises a supporting mechanism. The supporting mechanism comprises a fixed plate, a first axis, a second axis, a third axis and a fourth axis which are parallel to each other, a first linking member, a second linking member, a third linking member and a fourth linking member. The first axis and the second axis are fixed to the fixed plate. The third axis and the fourth axis can move relative to the fixed plate. The first linking member is pivotally connected to the chain assembly, the first axis and the third linking member. The second linking member is pivotally connected to the chain assembly, the second axis and the fourth linking member. The third linking member is pivotally connected to the third axis. The fourth linking member is pivotally connected to the fourth axis. The third axis and the fourth axis are suitable for rotating along a circle so that the first linking member and the second linking member are close to or away from each other.

[0012] In one embodiment of the present invention, when the flexible display module is in the folded mode, the first linking member and the second linking member are close to each other, and when the flexible display module is in the unfolded mode, the first linking member and the second linking member are far away from each other.

[0013] In one embodiment of the present invention, the line connecting the third axis and the fourth axis passes through the center of the circle, and the distance between the third axis and the fourth axis is fixed.

[0014] In one embodiment of the present invention, the first linkage member includes a first linkage sub-portion and a second linkage sub-portion. The first linkage sub-portion is L-shaped and connected between the chain assembly and the first shaft, and the second linkage sub-portion is connected between the first shaft and the third linkage member. The second linkage member includes a third linkage sub-portion and a fourth linkage sub-portion. The third linkage sub-portion is L-shaped and connected between the chain assembly and the second shaft, and the fourth linkage sub-portion is connected between the second shaft and the fourth linkage member.

[0015] Based on the above, in the display device of the present invention, the flexible display module is provided with a chain assembly, and the conveying assembly is arranged on the frame and can drive the chain assembly to move. When the flexible display module is in the folded mode, the conveying mechanism drives the chain assembly to move along the folding direction, so that the flexible display module is bent and moved into the receiving groove, and the flexible display module is folded in the receiving groove. When the flexible display module is in the unfolded mode, the conveying mechanism drives the chain assembly to move along the unfolding direction, so that the flexible display module is moved out of the receiving groove. The above design combines the sliding and folding actuation mechanisms, which is not only convenient for folding and unfolding, but also allows the flexible display module to undergo local and small-area stretching or compression when bending, thereby effectively reducing the bending radius of the display device and helping to save space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A is a schematic diagram of a display device in a folded mode according to an embodiment of the present invention;

[0017] Figure 1B yes Figure 1A A schematic diagram of a display device in an unfolded mode;

[0018] Figure 1C yes Figure 1A A schematic diagram of a display device in an unfolded mode and fully unfolded;

[0019] Figure 2 yes Figure 1B A partial schematic diagram of a display device;

[0020] Figure 3 yes Figure 2 A schematic side view of a display device;

[0021] Figure 4 yes Figure 2 A partial enlarged schematic diagram of a display device;

[0022] Figure 5 yes Figure 4 Schematic diagram of rack and chain assembly;

[0023] Figure 6 yes Figure 2 A schematic diagram of another viewing angle of the display device;

[0024] Fig. 7A yes Figure 6 A schematic diagram of the supporting mechanism at the first time point;

[0025] Figure 7B yes Figure 6 A schematic diagram of the supporting mechanism at the second time point;

[0026] Figure 7C yes Figure 6 Schematic diagram of the supporting mechanism at the third time point.

[0027] Explanation of symbols

[0028] 10: Display device

[0029] 100:Framework

[0030] 102: receiving groove

[0031] 104: Side

[0032] 110: Flexible display module

[0033] 112: Side

[0034] 112a: Both ends

[0035] 112b: Central District

[0036] 120: conveying mechanism

[0037] 130:Conveying components

[0038] 131: First gear

[0039] 132: Second gear

[0040] 133:Conveyor belt

[0041] 134: Rack

[0042] 135:Fixer

[0043] 140:Chain assembly

[0044] 142: Carrier board assembly

[0045] 144: Carrier unit

[0046] 146:Chain unit

[0047] 148: Driven gear

[0048] 150: Support mechanism

[0049] 151: First axis

[0050] 152: Second axis

[0051] 153: The Third Axis

[0052] 154: The Fourth Axis

[0053] 155:Fixed plate

[0054] 156: first link

[0055] 156a: first linkage part

[0056] 156b: second linkage part

[0057] 157: Second link

[0058] 157a: third linkage part

[0059] 157b: Fourth linkage part

[0060] 158: Third linking member

[0061] 159: Fourth linking member

[0062] 160: Rotating parts

[0063] 200: Shell

[0064] 202: Opening

[0065] A:Central axis

[0066] C: Center

[0067] P: Circumference

[0068] P1: First bending point

[0069] P2: Second bending point

[0070] R: Display area

[0071] R1: Zone 1

[0072] R2: Second Zone

[0073] X1: Folding direction

[0074] X2: Expand direction DETAILED DESCRIPTION

[0075] Figure 1A is a schematic diagram of a display device in a folded mode according to an embodiment of the present invention. Figure 1B yes Figure 1A A schematic diagram of a display device in an unfolded mode. Figure 1C yes Figure 1A A schematic diagram of a display device in an unfolded mode and fully unfolded.

[0076] See also Figures 1A to 1CIn this embodiment, the display device 10 is, for example, a center information display of the vehicle, which is disposed on the center console between the driver's seat and the co-driver's seat, and can display information such as the vehicle status, but the displayed information is not limited thereto. The display device 10 may further include an interactive display interface to facilitate the user to operate the vehicle or functions integrated with the vehicle, such as navigation or audio and video functions.

[0077] When the user is not using the display device 10, the user can activate a folded mode of the display device 10 so that the display device 10 Figure 1A As shown, it is housed in a housing 200 of the center console to avoid occupying space inside the vehicle.

[0078] When the user wants to use the display device 10, the display device 10 can be Figure 1B In this unfolded mode, the display device 10 is moved out of the opening 202 of the housing 200 and gradually extends in the up and down direction, and can be Figure 1C The folding and unfolding methods of the display device 10 will be described in detail later.

[0079] Figure 2 yes Figure 1B A partial schematic diagram of a display device. Figure 3 yes Figure 2 In order to clearly show the structure of the conveying mechanism 120, Figure 3 The support mechanism 150 is hidden.

[0080] See also Figure 2 and Figure 3 In this embodiment, the display device 10 includes a frame 100, a flexible display module 110 ( Figure 1B ), a conveying mechanism 120 and a supporting mechanism 150. The frame 100 is disposed on the housing 200 ( Figure 1B ) and has a receiving groove 102, and the receiving groove 102 is located opposite to the opening 202 ( Figure 1B The flexible display module 110 is, for example, a flexible display that can display images and can be bent and folded into the receiving groove 102 .

[0081] The conveying mechanism 120 includes a chain assembly 140 and a conveying assembly 130. The chain assembly 140 is disposed on the side 112 of the flexible display module 110. The conveying assembly 130 is disposed on the frame 100 and is suitable for driving the chain assembly 140 to move. The supporting mechanism 150 is disposed on the frame 100 and is pivotally connected to the side 112 of the flexible display module 110.

[0082] See also Figure 3When the flexible display module 110 is in the folded mode, the conveying mechanism 120 drives the chain assembly 140 to move along a folding direction X1, so that the flexible display module 110 is bent and moved along the folding direction X1 into the receiving groove 102.

[0083] Furthermore, the receiving groove 102 has a central axis A parallel to the folding direction X1, and the flexible display module 110 can be moved into the receiving groove 102 symmetrically relative to the central axis A. After the flexible display module 110 completely enters the receiving groove 102, the flexible display module 110 is folded in half in the receiving groove 102 to achieve the following: Figure 1A The storage state shown saves space in the car.

[0084] When the flexible display module 110 is in the unfolding mode, the conveying mechanism 120 drives the chain assembly 140 to move along an unfolding direction X2 opposite to the folding direction X1, so that the flexible display module 110 moves out of the receiving groove 102 along the unfolding direction X2 and symmetrically relative to the central axis A, so as to achieve the following Figure 1B or Figure 1C In the unfolded state shown, the user can conveniently view the image displayed by the flexible display module 110 .

[0085] In addition, the support mechanism 150 ( Figure 2 ) can support the flexible display module 110 so that the flexible display module 110 can extend perpendicular to the unfolding direction X2 to support and maintain the appearance of the flexible display module 110. The supporting mechanism 150 will be further introduced in the subsequent paragraphs.

[0086] Please also see Figure 1B and Figure 3 In this embodiment, the side edge 112 of the flexible display module 110 includes two ends 112a and a central area 112b located between the two ends 112a. The flexible display module 110 generates three bending points when being bent, including a first bending point P1 ( Figure 3 ) and two second bending points P2( Figure 3 ).

[0087] The first bending point P1 is located in the central area 112b and does not move, and the two second bending points P2 are mirror-symmetrical with respect to the central axis A. When the flexible display module 110 is folded or unfolded in the frame 100 , the two second bending points P2 move along the side 112 between the two ends 112a .

[0088] For example, when the user activates the folding mode, the flexible display module 110 gradually enters the receiving groove 102 , and the two second bending points P2 gradually move toward the two ends 112 a of the side 112 of the flexible display module 110 .

[0089] When the user activates the unfolding mode, the flexible display module 110 gradually moves out of the receiving groove 102, and the two second bending points P2 gradually move toward the central area 112b of the side 112 of the flexible display module 110. Figure 1C In the state shown, since the flexible display module 110 is fully unfolded and not bent, the first bending point P1 and the second bending point P2 do not exist.

[0090] Through the above-mentioned design, the display device 10 of this embodiment combines the mechanical features of a slidable display and a foldable display. In detail, in the unfolded mode, the flexible display module 110 can slide into or out of the receiving groove 102 relative to the frame 100, so the required unfolding space is extremely small. In the folded mode, the flexible display module 110 can be folded in the receiving groove 102 of the frame 100, thereby effectively saving storage space. In addition, the flexible display module 110 undergoes local and small-area stretching or compression when bending, which can reduce the bending radius of the display device 10 compared to the existing roll-able display, further reduce the occupied space, and make the material selection more flexible.

[0091] In addition, if Figure 1B As shown, the flexible display module 110 has a first region R1 and a second region R2, which are opposite to the frame 100 and form a display region R for displaying images. The area of ​​the display region R is adapted to change as the flexible display module 110 is folded or unfolded in the frame 100.

[0092] For example, when the flexible display module 110 is Figure 1B The state gradually changes to Figure 1C When the flexible display module 110 is in the state of being opened, the area of ​​the display region R will gradually increase. Therefore, when using a function that does not require a large display area (such as an alarm clock display), only a portion of the flexible display module 110 needs to be unfolded to display the corresponding image, thereby achieving the effect of saving space.

[0093] It should also be noted that Figure 2 One supporting mechanism 150 is shown, but it is not intended to limit the number of supporting mechanisms 150. The display device 10 may include two supporting mechanisms 150, which are respectively located on opposite sides of the frame 100.

[0094] The structure and operation of the conveying mechanism 120 are further explained below. Figure 4 yes Figure 2 A partial enlarged schematic diagram of a display device. Figure 5 yes Figure 4 In order to clearly show the structure of the conveying mechanism 120, Figure 4 The support mechanism 150 is hidden.

[0095] See also Figure 4 and Figure 5 The chain assembly 140 of the conveying mechanism 120 includes a carrier assembly 142 and a plurality of chain units 146. The carrier assembly 142 is disposed on the flexible display module 110 ( Figure 1B ) and includes a plurality of carrier units 144. The carrier units 144 are, for example, long plates and are rotatably connected in sequence to support the flexible display module 110. The chain units 146 are rotatably connected in sequence and are respectively fixed to the carrier units 144. Each chain unit 146 is provided with a driven gear 148, which is fixed to the chain unit 146 and does not rotate.

[0096] On the other hand, the conveying assembly 130 of the conveying mechanism 120 includes a first gear 131, a second gear 132, a transmission belt 133, a rack 134 and a fixing member 135. The first gear 131 and the second gear 132 are separated from each other and rotatably disposed on the side surface 104 of the frame 100, wherein the first gear 131 can be connected to a first power source such as a motor, and the first power source is suitable for driving the first gear 131 to rotate.

[0097] The transmission belt 133 is sleeved on the first gear 131 and the second gear 132. The rack 134 is connected to the fixing member 135. The rack 134 can be meshed with the driven gear 148 and fixed to the transmission belt 133 through the fixing member 135, so as to be movably disposed in the receiving groove 102 of the frame 100. The fixing member 135 is, for example, a gear, which can be meshed and fixed with the transmission belt 133, but the type of the fixing member 135 is not limited thereto.

[0098] Specifically, when the first gear 131 is driven by the first power source, the first gear 131 drives the transmission belt 133 to move, and the rack 134 moves along the folding direction X1 or the unfolding direction X2 with the transmission belt 133. Figure 5 As shown, since the driven gear 148 of the chain unit 146 is meshed with the rack 134 , the chain unit 146 can be driven by the rack 134 to move along the folding direction X1 or the unfolding direction X2 .

[0099] That is to say, in this embodiment, the flexible display module 110 can be bent and moved along the folding direction X1 into the accommodating groove 102 or moved out of the accommodating groove 102 along the unfolding direction X2 through the cooperation of the transmission belt 133, the rack 134 and the driven gear 148, thereby achieving the effect of well storing or unfolding the flexible display module 110.

[0100] in addition, Figure 3 and Figure 4The first gear 131, the second gear 132, the transmission belt 133, the rack 134, the driven gear 148 and the fixing member 135 are schematically shown. In this embodiment, these components all have a tooth structure, for example, Figure 5 That is, the tooth structures of the rack 134 and the driven gear 148 are shown. The present invention does not limit the shape, number and size of the tooth structures of these components, as long as the above-mentioned conveying effect can be achieved.

[0101] Next, the structure of the support mechanism 150 will be further explained. Figure 6 yes Figure 2 Schematic diagram of another viewing angle of the display device. In order to clearly show the structure of the support structure, Figure 6 The frame 100 and the conveyor assembly 130 are hidden.

[0102] See also Figure 5 and Figure 6 The supporting mechanism 150 of this embodiment includes a fixed plate 155, a rotating member 160, a plurality of shafts and a plurality of linkage members. The fixed plate 155 is fixed to the frame 100 ( Figure 2 The rotating member 160 is rotatably disposed on the fixed plate 155 and connected to a second power source such as a motor, and the second power source is suitable for driving the rotating member 160 to rotate.

[0103] The plurality of axes include a first axis 151, a second axis 152, a third axis 153, and a fourth axis 154 that are parallel to each other. The first axis 151 and the second axis 152 are fixed to the fixed plate 155, and the rotating member 160 is located between the first axis 151 and the second axis 152. The third axis 153 and the fourth axis 154 are located on opposite sides of the rotating member 160, and can move relative to the fixed plate 155 as the rotating member 160 rotates. The line between the third axis 153 and the fourth axis 154 passes through the center C of the circumference P of the rotating member 160, and the distance between the third axis 153 and the fourth axis 154 is fixed.

[0104] In this embodiment, the plurality of linkages are located on one side of the fixing plate 155 and face the frame 100, and include a first linkage 156, a second linkage 157, a third linkage 158, and a fourth linkage 159. The first linkage 156 is pivotally connected to the chain assembly 140, the first shaft 151, and the third linkage 158.

[0105] In detail, the first linking member 156 includes a first linking sub-portion 156a and a second linking sub-portion 156b, wherein the first linking sub-portion 156a is L-shaped and connected between the chain unit 146 of the chain assembly 140 and the first shaft 151, and the second linking sub-portion 156b is connected between the first shaft 151 and the third linking member 158. The first linking sub-portion 156a and the second linking sub-portion 156b are integrally formed.

[0106] Similarly, the second linking member 157 is pivotally connected to the chain assembly 140, the second shaft 152 and the fourth linking member 159. Specifically, the second linking member 157 includes a third linking sub-portion 157a and a fourth linking sub-portion 157b, wherein the third linking sub-portion 157a is L-shaped and connected between the other chain unit 146 of the chain assembly 140 and the second shaft 152, and the fourth linking sub-portion 157b is connected between the second shaft 152 and the fourth linking member 159. The third linking sub-portion 157a and the fourth linking sub-portion 157b are integrally formed.

[0107] One end of the third linking member 158 away from the first linking member 156 is pivotally connected to the third shaft 153, and one end of the fourth linking member 159 away from the second linking member 157 is pivotally connected to the fourth shaft 154. In addition, fasteners can be provided at the pivotal connection between the third linking member 158 and the first linking member 156 and at the pivotal connection between the fourth linking member 159 and the second linking member 157 to ensure the stability of the pivotal connection.

[0108] Fig. 7A yes Figure 6 Schematic diagram of the supporting mechanism at the first time point. Figure 7B yes Figure 6 Schematic diagram of the supporting mechanism at the second time point. Figure 7C yes Figure 6 The support mechanism 150 is shown in FIG. 1 at the third time point. Next, the operation of the support mechanism 150 is described.

[0109] In this embodiment, the third shaft 153 and the fourth shaft 154 are suitable for rotating along the circumference P of the rotating member 160 so that the first linking member 156 and the second linking member 157 are moved closer to or farther from each other.

[0110] Please refer to 7A to 7C Specifically, when the user activates the deployment mode, the rotating member 160 is driven by the second power source to rotate in a direction (eg 7A to 7C The third shaft 153 and the fourth shaft 154 rotate around the center C of the circle P.

[0111] Next, the third shaft 153 drives the third linking member 158 to move, and the third linking member 158 drives the first linking member 156 to move, so that the first linking member 156 rotates with the first shaft 151 as the rotation center C. At the same time, the fourth shaft 154 drives the fourth linking member 159 to move, and the fourth linking member 159 drives the second linking member 157 to move, so that the second linking member 157 rotates with the second shaft 152 as the rotation center C.

[0112] Thus, the first linking member 156 and the second linking member 157 can cooperate with the flexible display module 110 ( Figure 1B) move away from each other, and will not hinder the flexible display module 110 from moving out of the receiving groove 102 ( Figure 2 Since the first linking member 156 and the second linking member 157 are pivotally connected to the chain unit 146 of the flexible display module 110, the flexible display module 110 can be stably supported to prevent it from falling due to gravity or shaking due to external force.

[0113] When the user activates the folding mode, the rotating member 160 is driven by the second power source to rotate in the opposite direction of the aforementioned rotation direction (eg 7A to 7C The first linking member 156 and the second linking member 157 can be rotated in the counterclockwise direction. FIG. 7C to FIG. 7A As shown, they move in sequence to match the movement of the flexible display module 110 and get closer to each other, without hindering the process of the flexible display module 110 moving into the receiving groove 102.

[0114] The linkage principle between the first linkage member 156 and the second linkage member 157 in the folded mode is similar to that in the expanded mode, and will not be described again.

[0115] In summary, in the display device of the present invention, the flexible display module is provided with a chain assembly, and the conveying assembly is arranged on the frame and can drive the chain assembly to move. When the flexible display module is in the folded mode, the conveying mechanism drives the chain assembly to move along the folding direction, so that the flexible display module is bent and moved into the receiving groove, and the flexible display module is folded in the receiving groove. When the flexible display module is in the unfolded mode, the conveying mechanism drives the chain assembly to move along the unfolding direction, so that the flexible display module is moved out of the receiving groove. The above-mentioned design combines the sliding and folding actuation mechanisms, which is not only convenient for folding and unfolding, but also allows the flexible display module to undergo local and small-area stretching or compression when bending, thereby effectively reducing the bending radius of the display device and helping to save space.

[0116] In addition, the frame is provided with a supporting mechanism, which is pivotally connected to the side of the flexible display module, and can stably support and maintain the appearance of the flexible display module when it is unfolded, preventing the flexible display module from falling due to gravity or shaking due to external force.

Claims

1. A display device, comprising: A frame having a receiving groove; A flexible display module, which can be bent and folded in the receiving groove and has a side; A conveying mechanism, comprising a conveying assembly and a chain assembly, wherein the chain assembly is disposed on the flexible display module, and the conveying assembly is disposed on the frame and is suitable for driving the chain assembly to move; and A supporting mechanism, disposed on the frame and pivotally connected to the side; When the flexible display module is in the folded mode, the conveying mechanism drives the chain assembly to move along the folding direction, so that the flexible display module is bent and moved along the folding direction into the receiving groove, and the flexible display module is folded in the receiving groove. When the flexible display module is in the expanded mode, the conveying mechanism drives the chain assembly to move along the expanded direction opposite to the folded direction, so that the flexible display module moves out of the accommodating groove along the expanded direction, and the supporting mechanism supports the flexible display module so that the flexible display module extends perpendicular to the expanded direction.

2. A display device as described in claim 1, wherein the side includes two ends and a central area located between the two ends, the flexible display module has a first bending point and two second bending points, the first bending point is located in the central area, and when the flexible display module is folded or unfolded in the frame, the two second bending points move along the side between the two ends.

3. A display device as described in claim 1, wherein the chain assembly includes a carrier assembly and a plurality of chain units, the carrier assembly is arranged on the back side of the flexible display module and includes a plurality of carrier units, the carrier units are rotatably connected in sequence, the chain units are rotatably connected in sequence and are respectively fixed to the carrier units, and each of the chain units is provided with a driven gear.

4. A display device as described in claim 3, wherein the conveying assembly includes a first gear, a second gear, a transmission belt and a rack, the first gear and the second gear are separated from each other and rotatably disposed on the frame, the transmission belt is sleeved on the first gear and the second gear, the rack is fixed to the transmission belt and meshed with the driven gear, and is movably disposed on the frame, when the first gear drives the transmission belt to move, the flexible display module is driven by the transmission belt and the rack, and is bent along the folding direction to move into the accommodating groove or moves out of the accommodating groove along the unfolding direction. 5 . The display device as claimed in claim 1 , wherein the accommodating groove has a central axis parallel to the folding direction, and the flexible display module moves into or out of the accommodating groove symmetrically relative to the central axis.

6. A display device as described in claim 1, wherein the flexible display module has a first area and a second area, the first area and the second area are back to the frame, the first area and the second area constitute a display area, and the area of ​​the display area is suitable for changing as the flexible display module is folded or unfolded in the frame.

7. The display device according to claim 1, further comprising a supporting mechanism, wherein the supporting mechanism comprises: a fixing plate fixed to the frame; A first axis, a second axis, a third axis and a fourth axis are parallel to each other, the first axis and the second axis are fixed to the fixing plate, and the third axis and the fourth axis are movable relative to the fixing plate; as well as a first linking member, a second linking member, a third linking member and a fourth linking member, wherein the first linking member is pivotally connected to the chain assembly, the first shaft and the third linking member, the second linking member is pivotally connected to the chain assembly, the second shaft and the fourth linking member, the third linking member is pivotally connected to the third shaft, and the fourth linking member is pivotally connected to the fourth shaft, The third shaft and the fourth shaft are suitable for rotating along a circle so as to make the first linking member and the second linking member approach or move away from each other.

8. The display device as described in claim 7, wherein when the flexible display module is in the folded mode, the first linking member and the second linking member are close to each other, and when the flexible display module is in the unfolded mode, the first linking member and the second linking member are far away from each other. 9 . The display device as claimed in claim 7 , wherein a line between the third axis and the fourth axis passes through the center of the circle, and a distance between the third axis and the fourth axis is fixed.

10. The display device as claimed in claim 7, wherein the first linkage member comprises a first linkage sub-portion and a second linkage sub-portion, the first linkage sub-portion is L-shaped and connected between the chain assembly and the first shaft, and the second linkage sub-portion is connected between the first shaft and the third linkage member. The second linking member includes a third linking sub-portion and a fourth linking sub-portion. The third linking sub-portion is L-shaped and connected between the chain assembly and the second shaft. The fourth linking sub-portion is connected between the second shaft and the fourth linking member.

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