Display device

Abstract

The utility model discloses a display device, and belongs to the technical field of display. The display device comprises a supporting seat, a reel, a flexible display panel and a supporting piece. When the display device is in a retraction state, after the flat panel display part of the flexible display panel retracts into the containing cavity of the supporting seat, the two chain meshing parts which are meshed into the rigid rod body can be separated into two chain separation parts so as to retract into the containing cavity. When the display device is in an unfolded state and the flat panel display part needs to be unfolded, the two chain separation parts can be meshed to form a rigid rod body, and the flat panel display part is driven to be unfolded through fixed connection of one end, deviating from the two chain separation parts, of the rigid rod body and one side, deviating from the rollable display part, of the flat panel display part. In this way, the display device can be unfolded and retracted through the supporting piece with the simple structure, the reliability of the display device is improved, and the efficiency that the supporting piece drives the flexible display panel to be unfolded is high.

Description

Technical Field

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

[0002] With the development of display technology, while pursuing large-area displays, users also have higher requirements for the portability of display devices. The application of rollable displays in display devices allows them to have a large display area when unfolded and a minimal carrying volume when rolled up, resulting in a better user experience.

[0003] To enable the rollable display to be rolled up and down, the display device needs to be equipped with a drive mechanism to move the rollable display, so that the rollable display can be unfolded or rolled up.

[0004] However, the drive mechanism in current display devices equipped with rollable displays is relatively complex, resulting in high power consumption. Utility Model Content

[0005] This application provides a display device. It solves the problem of complex driving mechanism structures in existing display devices. The technical solution is as follows:

[0006] On one hand, a display device includes: a support base, a scroll, a flexible display panel, and a support member;

[0007] The support has a receiving cavity and an opening communicating with the receiving cavity;

[0008] The reel is installed inside the support base;

[0009] The flexible display panel includes a rollable display portion and a flat display portion. The rollable display portion can be wound around the scroll, and the flat display portion can extend out of the receiving cavity through the opening.

[0010] The support member includes: two chains arranged in a first direction, the first direction being parallel to the axis of the reel; at least a portion of the chain located within the receiving cavity is a chain separation portion, and a portion of the chain extending outside the receiving cavity is a chain engagement portion; two of the chain engagement portions of the two chains engage to form a rigid rod; the two chain separation portions of the two chains are separated, and the two chain separation portions are respectively arranged on both sides of the rigid rod in the first direction;

[0011] The rigid rod is fixedly connected to one end of the rigid rod away from the two chain separation parts, and to the side of the flat display part away from the rollable display part.

[0012] Optionally, the extension direction of the rigid rod is parallel to the second direction, the second direction is parallel to the planar display portion, and intersects with the first direction;

[0013] The chain separation section is slidably connected to the support base within the receiving cavity.

[0014] Optionally, the cavity has two storage tracks inside; in the first direction, the two storage tracks are located on both sides of the rigid rod; and the two storage tracks are slidably connected to two of the chain separation parts of the two chains.

[0015] The storage track includes at least a first linear track, wherein the extension direction of the first linear track is parallel to the first direction.

[0016] Optionally, the display device further includes: two drive gears located within the receiving cavity, the two drive gears respectively meshing with the two chains;

[0017] Specifically, for any one of the drive gears and the chain meshing with the drive gear, the drive gear is located at the intersection of the chain engagement portion and the chain disengagement portion in the chain, and the drive gear meshes with both the chain engagement portion and the chain disengagement portion.

[0018] Optionally, the chain includes: a plurality of chain teeth and a plurality of connectors, wherein two adjacent chain teeth are connected by one of the connectors;

[0019] In the rigid rod, a plurality of chain teeth in one chain engagement portion engage with a plurality of chain teeth in another chain engagement portion, and in the second direction, the plurality of chain teeth in one chain engagement portion and the plurality of chain teeth in another chain engagement portion are alternately arranged.

[0020] Optionally, the chain teeth have a drive groove on the side facing the connector;

[0021] At the intersection of the chain engagement portion and the chain disengagement portion, at least two of the multiple drive teeth of the drive gear are respectively located in the drive slots of at least two chain teeth arranged in a connected manner.

[0022] Optionally, at the intersection of the chain engagement portion and the chain disengagement portion, at least two of the multiple drive teeth of the drive gear abut against at least two of the continuously arranged connecting members.

[0023] Optionally, the chain tooth has a toothed portion on the side opposite to the connector, and for two chain teeth that are adjacently distributed in the second direction in the rigid rod, the toothed portion of one chain tooth meshes with the toothed portion of the other chain tooth.

[0024] Optionally, the storage track further includes: a first arc-shaped track and a second straight track;

[0025] The extension direction of the second straight track is parallel to the extension direction of the first straight track; one end of the first arc track is connected to the end of the first straight track away from the rigid rod, and the other end of the first arc track is connected to the end of the second straight track away from the rigid rod.

[0026] Optionally, the display device further includes: two auxiliary drive gears, which mesh with the two chains respectively;

[0027] Specifically, for any one of the auxiliary drive gears and the chain meshing with the auxiliary drive gear, the auxiliary drive gear is located at the first arc-shaped track and meshes with the portion of the chain separation section located within the first arc-shaped track.

[0028] Optionally, the storage track further includes: a second arc-shaped track and a third straight track;

[0029] The extension direction of the third straight track is parallel to the extension direction of the second straight track, and in the second direction, the third straight track is located between the first straight track and the second straight track;

[0030] In the first direction, the second arc-shaped track is located between the first arc-shaped track and the rigid rod; one end of the second arc-shaped track is connected to the end of the second straight track away from the first arc-shaped track, and the other end of the second arc-shaped track is connected to the end of the third straight track facing the rigid rod.

[0031] Optionally, the display device further includes: an elastic strip, one end of which is fixedly connected to one end of the rigid rod away from the two chain separation portions, and the other end of which is fixedly connected to one end of the flat display portion away from the rollable display portion.

[0032] Optionally, the display device further includes: a transmission assembly, a tensioning assembly, and a first drive motor; the first drive motor has an output shaft; one end of the transmission assembly is connected to the output shaft, and the other end is connected to the end of the reel; the tensioning assembly is sleeved on the transmission assembly and connected to the transmission assembly.

[0033] The first drive motor is used to drive the scroll to rotate via the transmission assembly; the tensioning assembly is configured to tension the flexible display panel during its unfolding process, so as to apply a force to the scroll in the opposite direction of rotation via the transmission assembly.

[0034] Optionally, the transmission assembly includes: a transmission sleeve, a transmission rod, and a transition mechanism; the transmission sleeve is connected to the output shaft, the transmission sleeve is sleeved on one end of the transmission rod, and is rotatably connected to the transmission rod; the end of the transmission rod opposite to the transmission sleeve is connected to the reel through the transition mechanism;

[0035] The tensioning assembly is sleeved on the transmission rod, with one end of the tensioning assembly connected to the transmission sleeve and the other end of the tensioning assembly connected to the end of the transmission rod away from the transmission sleeve.

[0036] Optionally, the display device further includes: a first guide shaft and a second guide shaft located within the receiving cavity; in a second direction, the first guide shaft is located between the second guide shaft and the scroll; the first guide shaft abuts against the back of the flexible display panel, and the second guide shaft abuts against the front of the flexible display panel;

[0037] Specifically, in the third direction, the contact position between the second guide shaft and the front of the flexible display panel is closer to the support member than the contact position between the first guide shaft and the back of the flexible display panel; and the side of the scroll away from the support member is closer to the support member than the contact position between the first guide shaft and the back of the flexible display panel; the second direction is parallel to the planar display portion and intersects with the first direction; the third direction intersects with the first direction and intersects with the second direction.

[0038] The beneficial effects of the technical solutions provided in this application include at least the following:

[0039] By engaging the two chain meshing parts of the two chains in the support member and separating the two chain separating parts, when the display device is in the retracted state and the flat display portion of the flexible display panel has retracted into the receiving cavity of the support base, the two chain meshing parts, which are engaged as rigid rods, can separate into two chain separating parts, allowing them to retract into the receiving cavity. Similarly, when the display device is in the unfolded state and the flat display portion needs to be unfolded, the two chain separating parts can engage as rigid rods. The ends of these rigid rods, away from the two chain separating parts, are fixedly connected to the side of the flat display portion away from the rollable display portion, thus driving the flat display portion to unfold. In this way, the unfolding and retraction of the display device can be achieved with a simple support member, improving the reliability of the display device and making the unfolding of the flexible display panel by the support member highly efficient. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the front structure of a display device provided in an embodiment of this application;

[0042] Figure 2 This is a schematic diagram of the front structure of another display device provided in an embodiment of this application;

[0043] Figure 3 This is a schematic diagram of the structure of the back of a display device provided in an embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the structure of a display device in a retracted state according to an embodiment of this application;

[0045] Figure 5 This is a schematic diagram of another display device in a retracted state provided in an embodiment of this application;

[0046] Figure 6 This is a schematic diagram of another display device in a retracted state provided in an embodiment of this application;

[0047] Figure 7 This is a schematic diagram of a partial structure of a display device in an unfolded state, as provided in an embodiment of this application.

[0048] Figure 8 This is a schematic diagram of a chain structure provided in an embodiment of this application;

[0049] Figure 9 This is a schematic diagram of another chain structure provided in an embodiment of this application;

[0050] Figure 10 This is a schematic diagram of a drive gear and chain meshing provided in an embodiment of this application;

[0051] Figure 11 This is a partial exploded view of a chain provided in an embodiment of this application;

[0052] Figure 12 This is a schematic diagram of another drive gear and chain meshing provided in an embodiment of this application;

[0053] Figure 13 This is a schematic diagram of a partial structure of another display device provided in an embodiment of this application;

[0054] Figure 14 This is a side view of a partial structure of a display device provided in an embodiment of this application;

[0055] Figure 15 This is a partial schematic diagram of a rigid rod provided in an embodiment of this application;

[0056] Figure 16 This is a schematic diagram of a partial structure of another display device provided in an embodiment of this application;

[0057] Figure 17 This is a cross-sectional schematic diagram of a scroll and a flexible display panel provided in an embodiment of this application;

[0058] Figure 18 This is a partial enlarged view of a display device provided in an embodiment of this application;

[0059] Figure 19 This is a partial exploded view of a display device provided in an embodiment of this application;

[0060] Figure 20 This is a side view of a partial structure of another display device provided in an embodiment of this application. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0062] This application provides a display device, which can be a rollable television, a rollable monitor, or a rollable mobile phone, or a rollable vehicle-mounted display installed in a vehicle. This application does not limit the scope of the application to this specific device.

[0063] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the front structure of a display device provided in an embodiment of this application. Figure 2 This is a schematic diagram of the front structure of another display device provided in an embodiment of this application. Figure 3 This is a schematic diagram of the rear structure of a display device according to an embodiment of this application. The display device may include: a support base 100, a scroll 200, a flexible display panel 300, and a support member 400. The support base 100 in the display device may have a receiving cavity K and an opening O communicating with the receiving cavity K.

[0064] Here, the display device can have an unfolded state and a retracted state. When the display device is in the unfolded state, at least a portion of the flexible display panel 300 and the support member 400 can extend and unfold from the receiving cavity K of the support base 100 through the opening O of the support base 100. When the display device is in the retracted state, please refer to... Figure 4 , Figure 4 This is a schematic diagram of the structure of a display device in a retracted state according to an embodiment of this application. At least a portion of the flexible display panel 300 and the support member 400 can be retracted into the receiving cavity K of the support base 100.

[0065] Optional, such as Figure 2 and Figure 3 As shown, the scroll 200 in the display device can be installed within the receiving cavity K of the support 100. The flexible display panel 300 in the display device may include a rollable display portion 301 and a flat display portion 302. The rollable display portion 301 of the flexible display panel 300 can be wound around the scroll 200, and the flat display portion 302 of the flexible display panel 300 can extend out of the receiving cavity K through the opening O of the support 100.

[0066] When the flexible display panel 300 in the display device is not needed for image display, the flat display portion 302 of the flexible display panel 300 can be completely rolled back into the cavity K of the support base 100, so that at least a portion of the flexible display panel 300 can be wound onto the scroll 200. The flexible display panel 300 wound onto the scroll 200 is the rollable display portion 301. In this case, the display device can be in a retracted state, and the overall volume of the display device is the volume of the support base 100 in the display device. Thus, when the flexible display panel 300 in the display device is not needed for image display, the display device can have a smaller size for easy carrying.

[0067] When the flexible display panel 300 in the display device needs to display an image, the rollable display portion 301 of the flexible display panel 300, which is wound on the roller 200, can be unfolded outwards and unfolded through the opening O of the support base 100 into a flat display portion 302 extending out of the receiving cavity K. It should be noted that when the rollable display portion 301 is unfolded to its maximum extent, the display area of ​​the flat display portion 302 extending out of the cavity K is at its maximum. In this case, the display device can be in the unfolded state, allowing the display device to display an image through the flat display portion 302 extending out of the cavity K, thereby enabling the display function of the display device to be used normally.

[0068] Optional, please refer to Figure 3 and Figure 5 , Figure 5 This is a schematic diagram of another display device in a retracted state according to an embodiment of this application. The support member 400 in the display device may include two chains 400a arranged in a first direction X, where the first direction X may be parallel to the axis of the scroll 200. At least a portion of the two chains 400a located within the receiving cavity K of the support base 100 is a chain separation portion 401, and the portion of the two chains 400a extending outside the receiving cavity K of the support base 100 is a chain engagement portion 402. The two chain engagement portions 402 of the two chains 400a engage to form a rigid rod H, and the two chain separation portions 401 of the two chains 400a are separated. The two chain separation portions 401 of the two chains 400a may be arranged on both sides of the rigid rod H in the first direction X. The end of the rigid rod H opposite to the two chain separation portions 401 may be fixedly connected to the side of the flat display portion 302 opposite to the rollable display portion 301.

[0069] When the flexible display panel 300 in the display device is not needed for image display, and the flat display portion 302 of the flexible display panel 300 retracts into the receiving cavity K of the support base 100, the two chain engagement portions 402 of the two chains 400a that mesh with the rigid rod H also need to retract into the receiving cavity K of the support base 100. During this process, since the two chain separation portions 401 of the two chains 400a can be arranged on both sides of the rigid rod H in the first direction X, the two chain engagement portions 402 retracted into the receiving cavity K can separate from each other, becoming two chain separation portions 401, and ultimately located in the receiving cavity K as two chain separation portions 401. Thus, after the display device is in the retracted state, the overall volume of the display device is the volume of the support base 100 in the display device.

[0070] When the flexible display panel 300 in the display device displays the image, the rollable display portion 301 of the flexible display panel 300, which is wound on the roller 200, unfolds outward and unfolds through the opening O of the support base 100 into a flat display portion 302 extending out of the receiving cavity K. During this process, the two chain separation portions 401 of the two chains 400a located in the receiving cavity K can mesh with each other to form two chain meshing portions 402, and gradually extend out of the receiving cavity K to mesh into a rigid rod H. Here, since the two chain engagement parts 402 after engagement are engaged into a rigid rod H with a certain rigidity, during the process of the two chain separation parts 401 turning into chain engagement parts 402 to engage into a rigid rod H, the end of the rigid rod H away from the two chain separation parts 401 can move in the direction away from the support base 100, so as to drive the side of the flat display part 302 away from the rollable display part 301 to move in the direction away from the support base 100, thereby driving the rollable display part 301 to unfold into the flat display part 302.

[0071] In this application, when the display device is not required to display an image, the flat display portion 302 in the flexible display panel 300 and the rigid rod H of the support member 400 can both be retracted into the receiving cavity K of the support base 100. Specifically, the flat display portion 302 in the flexible display panel 300 can be wound around the roller 200 located in the receiving cavity K to be rolled up into a rollable display portion 301. The two meshing chain engagement portions 402 in the rigid rod H of the support member 400 can be separated from each other in the receiving cavity K to be separated into two chain separation portions 401, thus making the display device in a retracted state.

[0072] When the display device needs to display an image, the rollable display portion 301 in the flexible display panel 300 can unfold into a flat display portion 302, and the two chain separation portions 401 in the support member 400 can be transformed into two chain engagement portions 402 to engage into a rigid rod H. Since the end of the rigid rod H opposite to the two chain separation portions 401 is fixedly connected to the side of the flat display portion 302 opposite to the rollable display portion 301, the rigid rod H can drive the unfolded rollable display portion 301 to extend through the opening O to the outside of the receiving cavity K, thus unfolding into a flat display portion 302, thereby putting the display device in an unfolded state.

[0073] In summary, this application provides a display device including a support base, a scroll, a flexible display panel, and a support member. By engaging the two chain engagement portions of the two chains in the support member and separating the two chain separation portions, when the display device is in a retracted state and the planar display portion of the flexible display panel retracts into the receiving cavity of the support base, the two chain engagement portions, which are rigid rods, can separate into two chain separation portions to retract into the receiving cavity. Similarly, when the display device is in an unfolded state and the planar display portion needs to be unfolded, the two chain separation portions can engage into rigid rods. The rigid rods, with one end facing away from the two chain separation portions, are fixedly connected to the side of the planar display portion facing away from the rollable display portion, thereby driving the planar display portion to unfold. Thus, the unfolding and retraction of the display device can be achieved using a simple support member, improving the reliability of the display device and increasing the efficiency of the support member in unfolding the flexible display panel.

[0074] Optional, such as Figure 6 As shown, Figure 6 This is a schematic diagram of another display device in a retracted state provided in this application embodiment. The extension direction of the rigid rod H can be parallel to the second direction Y. Here, the second direction Y is parallel to the planar display portion 302 and can intersect with the first direction X. The two chain separation portions 401 of the two chains 400a can be slidably connected to the support base 100 within the receiving cavity K of the support base 100.

[0075] In this way, as the two chain separation sections 401 gradually transform into two meshing chain engagement sections 402 to engage as a rigid rod H, since the rigid rod H has a certain rigidity, both chain separation sections 401 move towards the rigid rod H in the first direction X, and at the intersection with the rigid rod H, they transform into two meshing chain engagement sections 402 to engage as a rigid rod H. During the process of engaging as a rigid rod H, the end of the rigid rod H that is away from the two chain separation sections 401 can move continuously in the second direction Y in the direction away from the support base 100, so as to drive the side of the flat display section 302 that is away from the rollable display section 301 to move continuously in the second direction Y in the direction away from the support base 100. In this way, the flat display section 302 can be unfolded, so that the display device gradually changes from a retracted state to an unfolded state.

[0076] Optional, such as Figure 6 and Figure 7 As shown, Figure 7This is a schematic diagram of a partial structure of a display device in an unfolded state according to an embodiment of this application. The cavity K of the support base 100 may have two storage tracks 100a inside. In the first direction X, the two storage tracks 100a may be located on both sides of the rigid rod H, and the two storage tracks 100a may be slidably connected to the two chain separation parts 401 of the two chains 400a.

[0077] Thus, as the display device gradually unfolds, the end of the rigid rod H away from the two chain separation parts 401 drives the flat display part 302 to move in the second direction Y away from the support base 100. The two chain separation parts 401 can gradually slide out from the two storage tracks 100a, and after converting into two chain engagement parts 402, they engage and extend from the receiving cavity K, engaging as the rigid rod H. Similarly, as the display device gradually retracts, the end of the rigid rod H away from the two chain separation parts 401 can move in the second direction Y towards the support base 100, and the two engaging chain engagement parts 402 can separate into two chain separation parts 401, which can then slide into the two storage tracks 100a respectively.

[0078] The storage track 100a may include at least a first linear track 101, the extension direction of which may be parallel to the first direction X. It should be noted that the two storage tracks 100a may be symmetrically distributed with respect to the rigid rod H in the first direction X, and the extension directions of the two linear tracks 101 in the two storage tracks 100a may coincide.

[0079] Thus, during the unfolding of the display device, the two chain separation parts 401 can move within the two first tracks 101 in the direction toward the rigid rod H, gradually engaging into the rigid rod H. During the retraction of the display device, the two chain engagement parts 402 can gradually separate into two chain engagement parts 401, and gradually slide into the two first linear tracks 101, and then be stored in the two storage tracks 100a.

[0080] Optional, such as Figure 7As shown, the display device may further include two drive gears 500 located within the receiving cavity K of the support base 100. The two drive gears 500 can respectively mesh with two chains 400a. Specifically, for any one drive gear 500 and the chain 400a meshing with it, the drive gear 500 can be located at the intersection of the chain engagement portion 402 and the chain disengagement portion 401 within the chain 400a, and the drive gear 500 can mesh with both the chain engagement portion 402 and the chain disengagement portion 401. Through the meshing of the drive gear 500 with the corresponding chain 400a, the drive gear 500 can drive the chain 400a to move, thereby allowing the two chains 400a to gradually mesh or disengage.

[0081] It should be noted that the display device may also include two second drive motors, which can drive two drive gears 500 to rotate, thereby moving two chains 400a. Here, during the process of the display device switching from the retracted state to the extended state, the two second drive motors need to synchronously drive the two drive gears 500 to rotate, so as to drive the two chains 400a to move synchronously, thereby enabling the rigid rod H formed by the meshing of the two chain separation parts 401 to drive the flat display part 302 to unfold at a certain speed. During the process of the display device switching from the extended state to the retracted state, the two second drive motors also need to synchronously drive the two gears 500 to rotate, so as to drive the two chains 400a to move synchronously, thereby enabling the two chain meshing parts 402 in the rigid rod H to synchronously separate into two chain separation parts 401, and driving the two chain separation parts 401 to slide into the two first linear tracks 101 respectively, so as to be stored in the two storage tracks 100a respectively.

[0082] Optional, please refer to Figure 8 and Figure 9 , Figure 8 This is a schematic diagram of a chain structure provided in an embodiment of this application. Figure 9 This is a schematic diagram of another chain structure provided in an embodiment of this application. The chain 400a may include multiple chain teeth 403 and multiple connectors 404. Two adjacent chain teeth 403 in the chain 400a can be connected by a connector 404. In the rigid rod H, multiple chain teeth 403 in one chain engagement portion 402 can engage with multiple chain teeth 403 in another chain engagement portion 402. Furthermore, in the second direction Y, multiple chain teeth 403 in one chain engagement portion 402 can be alternately arranged with multiple chain teeth 403 in another chain engagement portion 402. In this way, the engagement between two chain engagement portions 402 can be achieved through the mutual engagement between multiple meshing teeth 403.

[0083] In this application, as Figure 8 and Figure 9 As shown, the chain tooth 403 in chain 400a may have a tooth A on the side away from the connector 404. For two chain teeth 403 that are adjacently distributed in the second direction Y in the rigid rod body H, the tooth A of one chain tooth 403 meshes with the tooth A of the other chain tooth 403, thus realizing the meshing of the two chain teeth 403.

[0084] It should be noted that the chain teeth 403 in the chain 400a of this application can have the following two structures:

[0085] In the first case, such as Figure 8 As shown, in the extending direction of chain 400a, a chain tooth 403 also has a meshing inclined surface P opposite to the tooth portion A. For the three chain teeth 403 arranged sequentially in the second direction Y in the rigid rod body H, one chain tooth 403 in one chain meshing portion 402 is located between two chain teeth 403 in another chain meshing portion 402. The tooth portion A of the middle chain tooth 403 meshes with the tooth portion A of one of the two chain teeth 403 located on both sides, and the meshing inclined surface P of the middle chain tooth 403 abuts against the meshing inclined surface P of the other chain tooth 403 located on both sides. In this way, through the tooth portion A of the chain tooth 403 and the meshing inclined surface P, the rigid rod body H formed by the meshing of the two chain meshing portions 402 can have a certain rigidity, so that the rigid rod body H can have support and transmit driving force. Here, in the direction perpendicular to the extension of the chain 400a, the inclination angle of the meshing slope P of the chain tooth 403 can range from 30° to 90°.

[0086] In the second case, such as Figure 9 As shown, in the extending direction of chain 400a, a chain tooth 403 may have two relatively distributed tooth portions A. For the three chain teeth 403 arranged sequentially in the second direction Y in the rigid rod body H, one chain tooth 403 in one chain engagement portion 402 is located between two chain teeth 403 in another chain engagement portion 402. One tooth portion A of the middle chain tooth 403 engages with one tooth portion A of the two chain teeth 403 on both sides, and the other tooth portion of the middle chain tooth 403 engages with the other tooth portion A of the two chain teeth 403 on both sides. Thus, through the two tooth portions A of the chain tooth 403, the rigid rod body H formed by the engagement of the two chain engagement portions 402 can have a certain rigidity.

[0087] The meshing of the chain 400a and the drive gear 500 in this application can also have the following two cases:

[0088] In the first case, such as Figure 9and Figure 10 As shown, Figure 10 This is a schematic diagram of a drive gear and chain meshing according to an embodiment of this application. At the intersection of the chain meshing portion 402 and the chain separating portion 401 in the chain 400a, at least two drive teeth 501 of the drive gear 500 can respectively abut against at least two continuously arranged connecting members 404. Thus, during the rotation of the drive gear 500, the drive gear 500 can drive the chain 400a to move through the abutment of the drive teeth 501 of the drive gear 500 against the connecting members 400.

[0089] Optional, such as Figure 10 and Figure 11 As shown, Figure 11 This is a partial exploded view of a chain provided in an embodiment of this application. The connector 404 in the chain 400a may include: a first cylinder 4041, and two second cylinders 4042 located on both sides of the first cylinder 4041 in a third direction Z. In the rigid rod H, the axes of the first cylinder 4041 and the two second cylinders 4042 coincide and are both parallel to the third direction Z. The diameter of the first cylinder 4041 may be larger than the diameter of the second cylinders 4042. Here, the third direction Z may intersect with the first direction X and the second direction Y. For example, the third direction Z may intersect perpendicularly with the first direction X and perpendicularly with the second direction Y; that is, the third direction Z may be perpendicular to the planar display portion 302.

[0090] The chain teeth 403 in chain 400a can be divided into two parts: one part is respectively fitted onto two second cylinders 4042, and the part of chain teeth 403 fitted onto one second cylinder 4042 can be divided into a layer of inner chain teeth 4031 and a layer of outer chain teeth 4032 arranged in the third direction Z. The inner chain teeth 4031 are closer to the first cylinder 4041 than the outer chain teeth 4032. Furthermore, in the extending direction of chain 400a, the inner chain teeth 4031 and the outer chain teeth 4032 are arranged alternately. Thus, after the two chain meshing parts 402 mesh to form a rigid rod H, the rigid rod H can have greater rigidity.

[0091] At the intersection of the chain engagement portion 402 and the chain separation portion 401, at least two of the multiple drive teeth 501 of the drive gear 500 can respectively abut against two first cylinders 4041 of at least two continuously arranged connectors 404.

[0092] It should be noted that, as Figure 11As shown, in the abutting drive tooth 501 and the first cylinder 4041, the angle g between the normal of the contact surface between the drive tooth 501 and the first cylinder 4041 and the extending direction of the chain 400a can be 45°. Thus, during the movement of the chain 400a by the drive gear 500 through the contact between the drive tooth 501 and the first cylinder 4041, the force F applied by the drive tooth 501 of the drive gear 500 to the connector 404 in the chain 400a is along the normal direction of the contact surface between the drive tooth 501 and the first cylinder 4041. The driving force F1 of the drive gear 500 driving the chain 400a along its extending direction can be... Therefore, the driving efficiency of the drive gear 500 driving the chain 400a is approximately 70%, which is relatively high.

[0093] It should also be noted that, in the first meshing configuration of the drive gear 500 and the chain 400, the diameters of the first cylinder 4041 and the two second cylinders 4042 in the connector 400 can all range from 1 mm to 5 mm, as long as the diameter of the first cylinder 4041 is greater than the diameter of the second cylinder 4042. The thickness of the chain teeth 403 in the third direction Z of the chain 400a can be between 0.5 mm and 2 mm.

[0094] It should also be noted that, such as Figure 11 As shown, the chain 400a may further include a plurality of snap rings 405, which are fixed to the second cylinder 4042. The snap rings 405 may be located on the side of the outer chain tooth 4032 opposite to the inner chain tooth 4031. The outer chain tooth 4032 can be constrained by the snap rings 405 to prevent the chain tooth 403 from detaching from the second cylinder 4042 of the connector 404. Here, the end of the second cylinder 4042 may have an engagement groove that mates with the snap ring 405, and at least a portion of the snap ring 405 may be located within the engagement groove.

[0095] In the second case, such as Figure 8 and Figure 12 As shown, Figure 12 This is a schematic diagram of another drive gear and chain meshing according to an embodiment of this application. The chain teeth 403 in chain 400a may have a drive groove S on the side facing the connector 404. At the intersection of the chain meshing part 402 and the chain separating part 401 in chain 400a, at least two drive teeth 501 of the plurality of drive teeth 501 of drive gear 500 may be respectively located in the drive groove S of at least two chain teeth 403 arranged in a connected manner. In this way, during the rotation of drive gear 500, the drive teeth 501 of drive gear 500 can continuously slide into and out of different drive grooves S of chain teeth 403 to drive chain 400a to move.

[0096] Optional, such as Figure 7 and Figure 13 As shown, Figure 13 This is a schematic diagram of a partial structure of another display device provided in this application embodiment. When the receiving track 100a includes a first straight track 101, the receiving track 100a may further include a first arc-shaped track 102 and a second straight track 103. The extension direction of the second straight track 103 may be parallel to the extension direction of the first straight track 101, that is, parallel to the first direction X. One end of the first arc-shaped track 102 may be connected to the end of the first straight track 101 opposite to the rigid rod H, and the other end of the first arc-shaped track 102 may be connected to the end of the second straight track 103 opposite to the rigid rod H.

[0097] It should be noted that, when the storage track 100a includes: a first straight track 101, a first arc-shaped track 102, and a second straight track 103, the structure of the storage track 100a can also have the following two configurations:

[0098] In the first case, such as Figure 13 As shown, the display device further includes two auxiliary drive gears 600, which can respectively mesh with two chains 400a. Specifically, for any one of the auxiliary drive gears 600 and the chain 400a meshing with it, the auxiliary drive gear 600 can be located at the first arc-shaped track 102 and mesh with the portion of the chain separation part 401 located within the first arc-shaped track 102.

[0099] Thus, as the display device switches from the unfolded state to the retracted state, the drive gear 500 drives the chain 400a to move so that the chain separation part 401 gradually retracts into the storage track 100a. At the same time, the auxiliary drive gear 600 also rotates synchronously so that the part of the chain separation part 401 located in the first linear track 101 can normally enter the second linear track 103 through the auxiliary drive gear 600.

[0100] Similarly, when the display device switches from the retracted state to the unfolded state, the drive gear 500 drives the chain 400a to move so that the chain separation part 401 gradually slides out from the storage track 100a. At the same time, the auxiliary drive gear 600 also rotates synchronously so that the part of the chain separation part 401 located in the second linear track 103 can normally enter the first linear track 101 through the auxiliary drive gear 600. Then, the two chain separation parts 401 that slide out from the two first linear tracks 101 can mesh into two chain meshing parts 402 to form a rigid rod H.

[0101] It should be noted that, as Figure 13As shown, in the first case, the first arc-shaped track 102 in the receiving track 100a is the periphery of the auxiliary drive gear 600. The second straight track 103 in the receiving track 100a can be a support plate fixedly connected to the inner wall of the receiving cavity K of the support base 100. The chain separation part 401 entering the second straight track 103 can be located on the support plate to avoid contact with the chain separation part 401 in the first track 101.

[0102] In the second case, such as Figure 7 As shown, the storage track 100a may further include a second arc-shaped track 104 and a third straight track 105. The extension direction of the third straight track 105 may be parallel to the extension direction of the second straight track 103, i.e., the first direction X. Furthermore, in the second direction Y, the third straight track 105 may be located between the first straight track 101 and the third straight track 103. In the first direction X, the second arc-shaped track 104 may be located between the first arc-shaped track 102 and the rigid rod H. One end of the second arc-shaped track 104 may be connected to one end of the second straight track 103 via the first arc-shaped track 102, and the other end of the second arc-shaped track 104 may be connected to the end of the third straight track 105 facing the rigid rod H.

[0103] Thus, when the display device switches from the unfolded state to the retracted state, the drive gear 500 moves the chain 400a so that the chain separation part 401 gradually retracts into the storage track 100a. During this process, the portion of the chain separation part 401 located within the first straight track 101 can slide through the first arc track 102 into the second straight track 103, and then through the second arc track 104 into the third straight track 105. This allows the chain separation part 401 to be stored within the storage track 100a.

[0104] Similarly, when the display device switches from the retracted state to the unfolded state, the drive gear 500 drives the chain 400a to move so that the chain separation part 401 gradually slides out from the storage track 100a. During this process, the part of the chain separation part 401 located in the third straight track 105 can slide into the second straight track 103 through the second arc track 104, and then slide into the first straight track 101 through the first arc track 102. Thus, the two chain separation parts 401 that slide out from the two first straight tracks 101 can mesh into two chain meshing parts 402 to form a rigid rod H.

[0105] It should be noted that, in one case, the bending radius of the first arc-shaped track 102 in the storage track 100a can be greater than or equal to 1 mm, so as to ensure that the two parts of the chain separation part 401 that slide in the first straight track 101 and the second straight track 102 respectively will not come into contact, thereby ensuring the normal sliding of the chain separation part 401 in the storage track 100a.

[0106] In the second case, the bending radius of the second arc-shaped track 104 in the receiving track 100a can be greater than or equal to 1 mm to ensure that the two parts of the chain separation section 401 that slide within the third straight track 105 and the second straight track 103 respectively will not contact each other. Furthermore, since the third straight track 105 is located between the first straight track 101 and the second straight track 103 in the second direction Y, the bending radius of the first arc-shaped track 102 is greater than the bending radius of the second arc-shaped track 104. Thus, even if the two parts of the chain separation section 401 that slide within the third straight track 105 and the second straight track 103 respectively do not contact each other, the two parts of the chain separation section 401 that slide within the second straight track 103 and the first straight track 101 respectively will also not contact each other.

[0107] Optional, such as Figure 14 As shown, Figure 14 This is a side view of a partial structure of a display device provided in an embodiment of this application. The display device may further include an elastic strip 1100. One end of the elastic strip 1100 in the display device may be fixedly connected to one end of the rigid rod H away from the two chain separation portions 401, and the other end of the elastic strip 1100 may be fixedly connected to one end of the flat display portion 302 away from the rollable display portion 301.

[0108] It should be noted that during the manufacturing process of the display device, before connecting the side of the flat display portion 302 away from the rollable display portion 301 to the side of the rigid rod H away from the two chain separation portions 401, a pre-tightening force can be applied to the flexible display panel 300 of the display device in the unfolded state, so that the flat display portion 302 located outside the receiving cavity K of the support base 100 can be tightened in the second direction Y, thereby making the flat display portion 302 have better flatness for displaying images.

[0109] After applying a preload to the flexible display panel 300 of the display device in its unfolded state, the elastic strip 1100 connects one end of the rigid rod H away from the two chain separation parts 401 and the end of the flat display part 302 away from the rollable display part 301. Here, the elastic strip 1100 acts as a buffer for the flexible display panel 300 to prevent the flexible display panel 300 with preload from being excessively stretched after being wound onto the scroll 200. In this way, the elastic strip 1100 ensures the reliability of the flexible display panel 300.

[0110] It should be noted that the end of the elastic strip 1100 facing away from the rigid rod H can be connected to the flexible display panel 300 in the following two optional ways:

[0111] In the first alternative implementation, the end of the elastic strip 1100 away from the rigid rod H can extend to the side of the rigid rod H facing the flat panel display portion 302, so as to be fixedly connected to the side of the flat panel display portion 302 facing the rigid rod H.

[0112] In a second alternative implementation, the side of the flat panel display portion 302 opposite to the rollable display portion 301 can extend to the side of the rigid rod H opposite to the flat panel display portion 302, to connect with the elastic strip 1100 located on the side of the rigid rod H opposite to the flat panel display portion 302. Here, the side of the rigid rod H opposite to the two chain separation portions 401 can have a support shaft, and the side of the flat panel display portion 302 opposite to the rollable display portion 301 can extend around the support shaft to the side of the rigid rod H opposite to the flat panel display portion 302 and be fixedly connected to the tensioning strip 900.

[0113] It should be noted that, as Figure 15 As shown, Figure 15 This is a partial schematic diagram of a rigid rod body provided in an embodiment of this application. The connectors 404 in the two chain meshing portions 402 of the rigid rod body H each have fixing holes T for connecting corresponding chain teeth 403. That is, when the display device is in the unfolded state, the multiple fixing holes T on the multiple connectors 404 can be arranged along the second direction Y in the extending direction of the chain 400a.

[0114] Here, because different types of flexible display panels 300 have different elasticities, different elasticity levels correspond to different tension forces. Thus, during the installation of the display device, a flexible display panel 300 with greater elasticity can withstand a larger tension force, resulting in less deformation of the elastic strip 1100; that is, the distance between the end of the elastic strip 1100 connected to the rigid rod H and the support base 100 in the second direction Y is smaller. Conversely, a flexible display panel 300 with less elasticity can withstand a smaller tension force, resulting in greater deformation of the elastic strip 1100; that is, the distance between the end of the elastic strip 1100 connected to the rigid rod H and the support base 100 in the second direction Y is smaller.

[0115] It should be noted that the elastic strip 1100 may have a certain width in the first direction X. For the two chain engagement portions 402 arranged in the first direction X in the rigid rod H, the end of the elastic strip 1100 connected to the rigid rod H may be connected to the two connecting pieces 404 in the two chain engagement portions 402.

[0116] Optional, such as Figure 16 As shown, Figure 16 This is a partial structural diagram of another display device provided in an embodiment of this application. The display device may further include: a transmission assembly 700, a tensioning assembly 800, and a first drive motor 900. The first drive motor 900 in the display device may have an output shaft 901. One end of the transmission assembly 700 in the display device may be connected to the output shaft 901, and the other end may be connected to the end of the scroll 200. The tensioning assembly 800 in the display device may be sleeved on the transmission assembly 700 and connected to the transmission assembly 700.

[0117] The first drive motor 900 in the display device can be used to drive the scroll 200 to rotate via the transmission assembly 700. The tensioning assembly 800 in the display device can be configured to tension the flexible display panel 300 during its unfolding process, so as to apply a force to the scroll 200 via the transmission assembly 700 in the opposite direction to the rotation of the scroll 200.

[0118] As the display device switches from a retracted state to an unfolded state, and the flexible display panel 300 continuously unfolds, two second drive motors synchronously drive two drive gears 500 to rotate, causing the two chain separation parts 401 of the two chains 400a to continuously mesh into a rigid rod H. During this process, the side of the rigid rod H away from the two chain separation parts 401 can drive the flat display part 302 away from the side of the rollable display part 301, moving in the second direction Y in a direction away from the support base 100. As the side of the flat display part 302 away from the rollable display part 301 continuously moves in the second direction Y in a direction away from the support base 100, the scroll 200 can rotate under the action of the flat display part 302 to accommodate the continuous unfolding of the rollable display part 301 wound on the scroll 200.

[0119] Furthermore, as the rigid rod H drives the flat panel display portion 302 to move continuously in the second direction Y away from the rollable display portion 301, away from the support base 100, the first drive motor 900 can drive the transmission component 700 to move via the output shaft 901. This, in turn, drives the tensioning component connected to the transmission component 700 to tension. After the tensioning component has a certain tension force, the transmission component 700 can transmit the driving force of the first drive motor 900 to the scroll 200 to drive the scroll 200 to rotate. Here, during the unfolding process of the flexible display panel 300, the rotational speed at which the first drive motor 900 drives the scroll 200 to rotate needs to match the speed at which the rigid rod H drives the flat panel display portion 302 to move in the second direction Y away from the support base 100.

[0120] Furthermore, during this process, since the tensioning force of the tensioning component 800 is used to apply a force opposite to the rotation direction of the scroll 200 to the scroll 800 through the transmission component 700, after the flexible display panel 300 is unfolded, under the action of this tensioning force, the scroll 200 can apply a force towards the support base 100 in the second direction Y to the flat display portion 302. In this way, the flat display portion 302 located between the elastic strip 1100 and the scroll 200 can be tensioned to ensure that the flat display portion 302 has good flatness, so that the display effect of the image displayed by the display device through the flat display portion 302 is better.

[0121] It should be noted that, as Figure 17 As shown, Figure 17This is a cross-sectional schematic diagram of a scroll and a flexible display panel provided in an embodiment of this application. During the unfolding process of the flexible display panel 300, the speed at which one side of the rollable display portion 301 of the flat display portion 302 moves in the second direction Y can be a linear velocity v, and the rotation speed of the scroll 200 can be an angular velocity w. Since the number of turns of the rollable display portion 301 wound on the scroll 200 gradually changes with the change of the driving time of the first drive motor 900, the radius r corresponding to the linear velocity v of the flat display portion 302 also gradually changes.

[0122] (1)

[0123] In formula (1), R0 is the distance between the portion of the rollable display portion 301 that is in contact with the surface of the roll 200 and the axis of the roll 200, and D is the thickness of the flexible display panel 300. Substituting formula (1) into... Formula (2) is obtained:

[0124] (2)

[0125] Differentiating and simplifying both sides of equation (2), we obtain equation (3):

[0126] (3)

[0127] Thus, according to formula (3), the relationship between the angular velocity w of the scroll 200 and the scroll rotation time can be obtained. In this way, the rotational speed of the scroll 200 can be obtained, which matches the speed at which the rigid rod H drives the flat display part 302 to move away from the side of the rollable display part 301 in the second direction Y in the direction away from the support base 100.

[0128] Optional, please refer to Figure 16 , Figure 18 and Figure 19 , Figure 18 This is a partial enlarged view of a display device provided in an embodiment of this application. Figure 19This is a partial exploded view of a display device provided in an embodiment of this application. The transmission assembly 700 in the display device may include: a transmission sleeve 701, a transmission rod 702, and a transition mechanism 703. The transmission sleeve 701 in the transmission assembly 700 can be connected to the output shaft 901 of the first drive motor 9001, and the transmission sleeve 701 can be sleeved on one end of the transmission rod 702 and rotatably connected to the transmission rod 701. The end of the transmission rod 702 opposite to the transmission sleeve 701 can be connected to the roller 200 through the transition mechanism 703. A tensioning assembly 800 can be sleeved on the transmission rod 702, and one end of the tensioning assembly 800 can be connected to the transmission sleeve 701, while the other end of the tensioning assembly 800 can be connected to the end of the transmission rod 702 opposite to the transmission sleeve 701.

[0129] It should be noted that the tensioning component 800 can be a torsion spring. During the process of the rigid rod H driving the flat display portion 302 to move continuously in the second direction Y away from the rollable display portion 301 and away from the support base 100, the first drive motor 900 can drive the transmission sleeve 701 to rotate via the output shaft 901. Consequently, the torsion spring, connected at both ends to the transmission sleeve 701 and the transmission rod 702 respectively, can continuously twist around its axis until the torsion spring twists to a certain extent. Then, the continued rotation of the transmission sleeve 701 can drive the transmission rod 702 to rotate via the torsion spring 800. After the transmission rod 702 rotates, it can drive the scroll 200 to rotate via the transition mechanism 703.

[0130] Furthermore, since a torsion spring can only transmit power after being twisted to a certain extent, it also possesses an elastic force opposite to the direction of twisting used to transmit power during the power transmission process. After the flexible display panel 300 is unfolded, the elastic force of the torsion spring is transmitted to the scroll 200 through the transmission rod 702 and the transition mechanism 703, and can be opposite to the rotation direction of the scroll 200. Under the action of this elastic force, the scroll 200 can apply a force towards the support base 100 in the second direction Y to the flat display portion 302. Thus, the flat display portion 302 located between the elastic strip 1100 and the scroll 200 can be tensioned to ensure that the flat display portion 302 has good flatness, resulting in a better display effect for the image displayed by the display device through the flat display portion 302.

[0131] It should be noted that the cavity K of the support base 100 may have a support portion 106, which can be used to support the output shaft 901 of the first drive motor 900, so that the output shaft 901 can rotate under the support of the support portion 106. Similarly, the end of the transmission rod 702 away from the transmission sleeve 701 can also be supported by the support base 100, so that the transmission rod 702 can rotate under the support of the support base 100.

[0132] It should also be noted that the tensioning assembly 800 can be fully sleeved on the transmission rod 702. In this way, the transmission rod 702 can support the tensioning assembly 800 in the second direction Y to prevent the tensioning assembly 800 from deforming in the second direction Y.

[0133] Optional, such as Figure 19 As shown, the transition mechanism 703 in the transmission assembly 700 may include: a gear belt 7031, a first transmission gear 7032, and a second transmission gear 7033. The first transmission gear 7032 may be sleeved on the end of the transmission rod 702 away from the transmission sleeve 701, and the second transmission gear 7033 may be sleeved on the end of the reel 200. Both ends of the gear belt 7031 may be sleeved on the first transmission gear 7032 and the second transmission gear 7033. The rotation of the transmission rod 702 can drive the first transmission gear 7032 to rotate, and then, through the rotation of the gear belt 7031, the reel 200 can be driven to rotate through the second transmission gear 7033.

[0134] Optional, please refer to Figure 20 , Figure 20 This is a side view of a partial structure of another display device provided in an embodiment of this application. The display device may further include a first guide shaft 1200 and a second guide shaft 1300 located within the receiving cavity K. In the second direction Y, the first guide shaft 1200 may be located between the second guide shaft 1300 and the scroll 200. The first guide shaft 1200 may abut against the back of the flexible display panel 300, that is, the first guide shaft 1200 may be located between the flexible display panel 300 and the support member 400 in the third direction Z. The second guide shaft 1300 may abut against the front of the flexible display panel 300, that is, the second guide shaft 1300 may be located on the side of the flexible display panel 300 away from the support member 400 in the third direction Z.

[0135] Specifically, in the third direction Z, the contact position between the second guide shaft 1300 and the front of the flexible display panel 300 can be closer to the support member 400 than the contact position between the first guide shaft 1200 and the back of the flexible display panel 300. Furthermore, the side of the scroll 200 facing away from the support member 400 can be closer to the support member 400 than the contact position between the first guide shaft 1200 and the back of the flexible display panel 300.

[0136] In this way, the position of the flexible display panel 300 that abuts against the first guide shaft 1200 can be in the third direction relative to the position of the second guide shaft 1300 that abuts against the front of the flexible display panel 300 and the side of the roll 200 away from the support member 400, protruding in the direction away from the support member 400. The position of the second guide shaft 1300 that abuts against the front of the flexible display panel 300 can be in the third direction Z that abuts against the first guide shaft 1200 in the flexible display panel 300, recessed in the direction towards the support member 400. This can further improve the flatness of the flat display portion 302 in the flexible display panel 300.

[0137] It should be noted that the diameters of both the scroll 200 and the first guide shaft 1200 can range from 5 mm to 50 mm. Furthermore, in the third direction Z, the distance between the axis of the first guide shaft 1200 and the axis of the scroll 200 can be between 1 mm and 10 mm. The distance between the position of the flexible display panel 300 that abuts against the first guide shaft 1200 and the position of the flexible display panel 300 that abuts against the second guide shaft 1300 can also be between 1 mm and 10 mm. Thus, in the third direction, the position of the flexible display panel 300 that abuts against the first guide shaft 1200 can protrude 1 mm to 10 mm away from the support member 400 relative to the position of the second guide shaft 1300 abutting against the front of the flexible display panel 300.

[0138] In summary, this application provides a display device including a support base, a scroll, a flexible display panel, and a support member. By engaging the two chain engagement portions of the two chains in the support member and separating the two chain separation portions, when the display device is in a retracted state and the planar display portion of the flexible display panel retracts into the receiving cavity of the support base, the two chain engagement portions, which are rigid rods, can separate into two chain separation portions to retract into the receiving cavity. Similarly, when the display device is in an unfolded state and the planar display portion needs to be unfolded, the two chain separation portions can engage into rigid rods. The rigid rods, with one end facing away from the two chain separation portions, are fixedly connected to the side of the planar display portion facing away from the rollable display portion, thereby driving the planar display portion to unfold. Thus, the unfolding and retraction of the display device can be achieved using a simple support member, improving the reliability of the display device and increasing the efficiency of the support member in unfolding the flexible display panel.

[0139] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0140] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0141] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display device, characterized in that, The display device comprises: a support base, a reel, a flexible display panel and a support; the support base has a receiving cavity and an opening communicating with the receiving cavity; the reel is installed in the support base; the flexible display panel comprises a coiled display part and a planar display part, the coiled display part can be wound on the reel, and the planar display part can be extended out of the receiving cavity through the opening; the support comprises two chains arranged in a first direction, the first direction is parallel to the axis of the reel; at least part of the chain located in the receiving cavity is a chain separation part, and the part of the chain extending out of the receiving cavity is a chain engagement part; the two chain engagement parts of the two chains are engaged into a rigid rod body; the two chain separation parts of the two chains are separated, and the two chain separation parts are arranged on the two sides of the rigid rod body in the first direction respectively; wherein one end of the rigid rod body away from the two chain separation parts is fixedly connected with one side of the planar display part away from the coiled display part.

2. The display device according to claim 1, wherein The extension direction of the rigid rod body is parallel to a second direction, the second direction is parallel to the planar display part, and intersects with the first direction; the chain separation part is in sliding connection with the support base in the receiving cavity.

3. The display device according to claim 2, wherein The inside of the receiving cavity has two receiving tracks; in the first direction, the two receiving tracks are respectively located on the two sides of the rigid rod body; and the two receiving tracks are respectively in sliding connection with the two chain separation parts of the two chains; wherein the receiving track at least comprises a first straight track, the extension direction of the first straight track is parallel to the first direction.

4. The display device according to claim 3, wherein The display device further comprises two drive gears located in the receiving cavity, and the two drive gears are respectively in engagement with the two chains; wherein for any one of the drive gears and the chain in engagement with the drive gear, the drive gear is located at the position where the chain engagement part and the chain separation part of the chain intersect, and the drive gear is in engagement with the chain engagement part and the chain separation part.

5. The display device according to claim 4, wherein The chain comprises a plurality of chain teeth and a plurality of connecting pieces, two adjacent chain teeth are connected by one connecting piece; in the rigid rod body, a plurality of chain teeth in one chain engagement part are in engagement with a plurality of chain teeth in another chain engagement part, and in the second direction, a plurality of chain teeth in one chain engagement part and a plurality of chain teeth in another chain engagement part are alternately arranged.

6. The display device according to claim 5, wherein The side of the chain tooth facing the connecting piece has a drive groove; at the position where the chain engagement part and the chain separation part intersect, at least two drive teeth of the plurality of drive teeth of the drive gear are respectively located in the drive grooves of at least two chain teeth arranged in connection.

7. The display device according to claim 6, wherein at the position where the chain engagement part and the chain separation part intersect, at least two drive teeth of the plurality of drive teeth of the drive gear are respectively in abutment with at least two connecting pieces arranged in succession.

8. A display device according to any of claims 5 to 7, wherein The chain tooth has a tooth portion on the side away from the connecting piece, and for two chain teeth adjacent in the second direction in the rigid rod body, the tooth portion of one chain tooth is engaged with the tooth portion of the other chain tooth.

9. A display device according to any one of claims 4-7, characterized in that The receiving track further comprises a first arc-shaped track and a second straight track; The extending direction of the second straight track is parallel to the extending direction of the first straight track; one end of the first arc-shaped track is connected with one end of the first straight track away from the rigid rod body, and the other end of the first arc-shaped track is connected with one end of the second straight track away from the rigid rod body.

10. The display device according to claim 9, wherein The display device further comprises two auxiliary drive gears, which are respectively engaged with the two chains; For any one of the auxiliary drive gears and the chain engaged with the auxiliary drive gear, the auxiliary drive gear is located at the first arc-shaped track and is engaged with the part of the chain separation portion located in the first arc-shaped track.

11. The display device according to claim 9, wherein The receiving track further comprises a second arc-shaped track and a third straight track; The extending direction of the third straight track is parallel to the extending direction of the second straight track, and in the second direction, the third straight track is located between the first straight track and the second straight track; In the first direction, the second arc-shaped track is located between the first arc-shaped track and the rigid rod body; one end of the second arc-shaped track is connected with one end of the second straight track away from the first arc-shaped track, and the other end of the second arc-shaped track is connected with one end of the third straight track towards the rigid rod body.

12. The display device according to any one of claims 1 to 7, 10 to 11, wherein The display device further comprises an elastic strip, one end of the elastic strip is fixedly connected with one end of the rigid rod body away from the two chain separation portions, and the other end of the elastic strip is fixedly connected with one end of the planar display portion away from the rollable display portion.

13. The display device according to any one of claims 1 to 7, 10 to 11, wherein The display device further comprises a transmission assembly, a tensioning assembly and a first drive motor; the first drive motor has an output shaft; one end of the transmission assembly is connected with the output shaft, and the other end is connected with the end of the reel; the tensioning assembly is sleeved on the transmission assembly and connected with the transmission assembly; The first drive motor is configured to drive the reel to rotate through the transmission assembly; the tensioning assembly is configured to be tensioned during the unfolding of the flexible display panel to apply an action force opposite to the rotation direction of the reel to the reel through the transmission assembly.

14. The display device of claim 13, wherein, The transmission assembly comprises a transmission sleeve, a transmission rod and a transition mechanism; the transmission sleeve is connected with the output shaft, the transmission sleeve is sleeved on one end of the transmission rod and rotationally connected with the transmission rod; one end of the transmission rod away from the transmission sleeve is connected with the reel through the transition mechanism; The tensioning assembly is sleeved on the transmission rod, and one end of the tensioning assembly is connected with the transmission sleeve, and the other end of the tensioning assembly is connected with one end of the transmission rod away from the transmission sleeve.

15. The display device according to any of claims 1-7, 10-11, 14, wherein The display device further comprises a first guide shaft and a second guide shaft located in the accommodating cavity; the first guide shaft is located between the second guide shaft and the reel in the second direction; the first guide shaft abuts against the back surface of the flexible display panel, and the second guide shaft abuts against the front surface of the flexible display panel; wherein, in the third direction, the abutting position of the second guide shaft against the front surface of the flexible display panel is closer to the support relative to the abutting position of the first guide shaft against the back surface of the flexible display panel; and the side of the reel away from the support is closer to the support relative to the abutting position of the first guide shaft against the back surface of the flexible display panel; the second direction is parallel to the flat display part and intersects with the first direction; the third direction intersects with the first direction and intersects with the second direction.

Images