CN113920874A

CN113920874A - Display device

Info

Publication number: CN113920874A
Application number: CN202111194540.4A
Authority: CN
Inventors: 林新琦; 王宗元
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-01-11
Anticipated expiration: 2041-10-13
Also published as: CN113920874B

Abstract

The embodiment of the disclosure provides a display device, which comprises a flexible display panel and a support assembly, wherein the flexible display panel comprises a first part and a second part which are connected with each other, the flexible display panel comprises a first end part positioned on one side of the first part and a second end part positioned on one side of the second part, the first end part is far away from the support assembly, the second part is wound on the surface of the support assembly, the flexible display panel is configured to be unfolded or folded under the action of a driving force to change the area of the first part, the support assembly comprises a follow-up structure, the follow-up structure moves along with the flexible display panel in the unfolding or folding process of the flexible display panel, and the part, positioned on the surface of the follow-up structure, of the second end part is adsorbed on the surface of the follow-up structure. The technical scheme of the embodiment of the disclosure can avoid the second end part of the flexible display panel from warping, and is beneficial to reducing the friction force between the second end part of the flexible display panel and the machine shell, thereby reducing the overall driving force of the display device.

Description

Display device

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display device.

Background

With the development of display technology, display devices having a roll-to-roll form are gradually coming into the field of vision of people. At present, a display device with a roll-sliding mode includes a flexible display panel and a supporting shaft, wherein the flexible display panel is at least partially wound on a surface of the supporting shaft, and an end portion of the flexible display panel close to the supporting shaft is accommodated in a housing. Since the end of the flexible display panel close to the supporting shaft is easily warped, the friction between the end and the chassis is increased, so that the flexible display panel needs to consume power to overcome the friction during the unfolding or folding process.

Disclosure of Invention

Embodiments of the present disclosure provide a display device to solve or alleviate one or more technical problems in the prior art.

As an aspect of the embodiments of the present disclosure, there is provided a display device, including a flexible display panel and a support assembly, the flexible display panel including a first portion and a second portion connected to each other, the flexible display panel including a first end portion located on one side of the first portion and a second end portion located on one side of the second portion, the first end portion being away from the support assembly, the second portion being disposed around a surface of the support assembly, the flexible display panel being configured to be unfolded or folded under a driving force to change an area of the first portion, the support assembly including a follower structure, the follower structure moving with the flexible display panel during the unfolding or folding of the flexible display panel, a portion of the second end portion located on the surface of the follower structure being adsorbed on the surface of the follower structure.

In one embodiment, the support assembly further includes a support structure, the following structures and the support structure are alternately arranged along an extending direction of the support assembly, a gap is arranged between adjacent following structures and the support structure, the support assembly further includes a tension assembly connected with the second end portion of the flexible display panel, and the tension assembly is configured to provide tension to the flexible display panel during unfolding or folding of the flexible display panel.

In one embodiment, an opening is disposed on a side of the support structure facing the first end, the support assembly is provided with an inner cavity, the tensioning assembly comprises a rotating shaft disposed in the inner cavity and along an extending direction of the support assembly, and a tensioning bar wound on the rotating shaft, an outer end of the tensioning bar passes through the opening to be connected with the second end of the flexible display panel, and the rotating shaft is configured to rotate during the unfolding or folding process of the flexible display panel to provide a tensioning force to the flexible display panel through the tensioning bar.

In one embodiment, the outer surface of the support structure is flush with the outer surface of the follower structure, or the outer surface of the support structure is proximate the central axis of the support assembly relative to the outer surface of the follower structure.

In one embodiment, the support assembly further comprises a support ring, the follower structure is sleeved outside the support ring, and the follower structure and the support ring are connected through a movable structure, so that the follower structure can slide around the support ring relative to the support ring.

In one embodiment, the movable structure comprises a limiting member and a plurality of rolling bodies, the rolling bodies are arranged on the surface of the support ring, the limiting member is provided with a plurality of limiting holes, the limiting holes correspond to the rolling bodies one by one, and the limiting member is arranged on the periphery of the support ring and limits the corresponding rolling bodies at preset positions through the limiting holes.

In one embodiment, the plurality of rolling elements are arranged in a plurality of rows along the extending direction of the supporting assembly, each row of rolling elements corresponds to one limiting part, each limiting part comprises two oppositely-arranged limiting strips and a plurality of clamping parts, the two limiting strips are formed with relatively-curved radians to form limiting holes, and the clamping parts are located between the two adjacent limiting holes and clamp and connect the two limiting strips.

In one embodiment, the surface of the support ring is provided with a limiting groove for providing a preset position for the rolling body, and the rolling body can roll in the limiting groove under the limitation of the limiting hole, so that the follow-up structure can slide around the support ring relative to the support ring.

In one embodiment, the following structure includes a following belt sleeved outside the movable structure and contacting the movable structure, and an absorber disposed on a surface of the following belt and configured to generate an adsorption force on the flexible display panel, and the second portion is adsorbed on a surface of the absorber.

In one embodiment, the number of the adsorption bodies is plural, each adsorption body is provided on the surface of the follower belt in the extending direction of the support member, and the plurality of adsorption bodies are sequentially provided at intervals in the circumferential direction of the follower belt.

In one embodiment, the follower strip is a flexible base strip.

In one embodiment, the following structure comprises two bending parts and two flat parts, wherein the two bending parts and the two flat parts are oppositely arranged, the bending parts and the flat parts are sequentially connected to form a closed ring shape, and the flat part facing to the user side supports the first part of the flexible display panel.

In the display device in the embodiment of the disclosure, the part of the second end part of the flexible display panel, which is located on the surface of the follow-up structure, is adsorbed on the surface of the follow-up structure, so that the upper part of the second end part, which is located on the surface of the follow-up structure, can be prevented from warping, and in the process of unfolding or folding the flexible display panel, the friction force between the second end part and the casing is small, so that the friction force can be overcome only by a small driving force, and the reduction of the overall driving force of the display device is facilitated.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present disclosure will be readily apparent by reference to the drawings and following detailed description.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are not to be considered limiting of its scope.

Fig. 1 illustrates a schematic structure of a related art display device.

Fig. 2A illustrates a schematic cross-sectional view of a display device in an expanded state according to an embodiment of the disclosure.

Fig. 2B illustrates a cross-sectional schematic view of a display device in a stowed state according to an embodiment of the present disclosure.

Fig. 3A shows an external view schematic of a support assembly according to an embodiment of the present disclosure.

FIG. 3B shows a schematic cross-sectional view of FIG. 3A taken along cut line A1-A1.

FIG. 3C shows a schematic cross-sectional view of FIG. 3A taken along cut line A1-A1.

Fig. 4A illustrates a schematic position diagram between a flexible display panel and a support structure when a display device according to an embodiment of the present disclosure is in an unfolded state.

Fig. 4B illustrates a schematic position diagram between a flexible display panel and a support structure when the display device is in a stowed state according to an embodiment of the disclosure.

Fig. 5A shows a schematic top view of a support assembly (with the follower structure omitted) according to an embodiment of the disclosure.

Fig. 5B shows a schematic side view of the support assembly towards the first end side of the flexible display panel according to an embodiment of the disclosure (the follower structure is omitted).

Fig. 6A shows a schematic top view of a movable structure according to an embodiment of the disclosure arranged on a support ring.

Fig. 6B illustrates a schematic cross-sectional view of a movable structure according to an embodiment of the disclosure.

Fig. 6C shows a schematic position diagram between a limiting member and a rolling element according to an embodiment of the disclosure.

Fig. 7A shows a schematic top view of a follower structure in accordance with an embodiment of the present disclosure.

Fig. 7B illustrates a cross-sectional schematic view of a follower structure in accordance with an embodiment of the present disclosure.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments can be modified in various different ways, without departing from the spirit or scope of the present disclosure. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

As shown in fig. 1, in the related art, the roll type display device 1 having the roll-in-roll state includes a flexible display panel 11, a support shaft 12, a guide shaft 13, a support plate 14, and a tension assembly 15. Wherein, guiding axle 13 and backup pad 14 set up relatively and all are located the first side (right side) of back shaft 12, the lowest of the first surface (lower surface) of guiding axle 13 and the lowest parallel and level of the first surface (lower surface) of back shaft 12, and the highest parallel and level of the surface of backup pad 14 towards user one side (upside) and the second surface (upper surface) of back shaft 12. The flexible display panel 11 comprises a first portion 111, a second portion 112 and a third portion 113 connected to each other, and a line segment L1 in fig. 1 indicates a boundary between the first portion 111 and the third portion 113 and between the first portion 111 and the second portion 112. The first portion 111 is located on the side of the support shaft 12 facing the user, the second portion 112 is located between the support shaft 12 and the guide shaft 13, the third portion 13 is wound around the support shaft 12, and the flexible display panel 11 includes a first end portion 11A located on the side of the first portion 111 and a second end portion 11B located on the side of the second portion 112. The tension assembly 15 includes a rotation shaft 151 between the guide shaft 13 and the support plate 14, and a tension bar 152 connected between the rotation shaft 151 and the second end 11B around the guide shaft 13, the tension bar 152 providing a tension force to the flexible display panel 11. The related art display device 1 has two technical problems: first, the second end 11B of the flexible display panel 11 is warped to break loose from the tension bar 152, the second end 11B is accommodated in a housing (not shown), and during the process of unfolding or folding the flexible display panel 11, a large friction force is generated between the second end 11B and the housing, so that power is consumed to overcome the friction force; the second technical problem is that there is a gap between the support shaft 12 and the support plate 14, and the support shaft 12 and the support plate 14 cannot provide good support for the first portion 111, so that the area of the first portion 111 between the support shaft 12 and the support plate 14 is prone to wrinkle or dent, resulting in poor flatness of the first portion 111.

To solve the above technical problem, an embodiment of the present disclosure provides a display device.

Fig. 2A illustrates a schematic cross-sectional view of a display device in an expanded state according to an embodiment of the disclosure. Fig. 2B shows a schematic cross-sectional view of a display device in a stowed state according to an embodiment of the present disclosure. As shown in fig. 2A and 2B, the display device 2 may include a flexible display panel 20 and a support member 30.

The flexible display panel 20 comprises a first portion 21 and a second portion 22 connected to each other, and a line segment L2 in fig. 2A and 2B represents a boundary line between the first portion 21 and the second portion 22. The flexible display panel 20 includes a first end portion 20A on a side of the first portion 21 and a second end portion 20B on a side of the second portion 22, the first end portion 20A being away from the support member 30, and the second portion 22 being wound on a surface of the support member 30. The flexible display panel 20 is configured to be unfolded or folded under the driving force to change the area of the first portion 21, for example, the area of the first portion 21 is gradually increased and the area of the second portion 22 is gradually decreased during the unfolding of the flexible display panel 20; during the folding process of the flexible display panel 20, the area of the first portion 21 gradually decreases, and the area of the second portion 22 gradually increases. Note that the first portion 21 is used to display an image. The support assembly 30 includes a following structure 31, the following structure 31 moves with the flexible display panel 20 during the unfolding or folding process of the flexible display panel 20, and a portion of the second end portion 20B on the surface of the following structure 31 is adsorbed on the surface of the following structure 31.

Illustratively, the portion of the second end portion 20B on the surface of the follower structure 31 is adsorbed on the surface of the follower structure 31, so that the portion of the second end portion 20B on the surface of the follower structure 31 is adsorbed and connected with the follower structure 31. In the process of unfolding the flexible display panel 20, for example, from the state of fig. 2B to the state of fig. 2A, the first end portion 20A moves away from the support assembly 30 under the traction action of the first driving force, and the flexible display panel 20 is tensioned and drives the follower structure 31 to rotate along with the flexible display panel 20 in the first hour hand walking direction, so that the area of the first portion 21 is increased and the area of the second portion 22 is decreased. In the process of folding the flexible display panel 20, for example, the state of fig. 2A is converted into the state of fig. 2B, the second end portion 20B drives the follower structure 31 to rotate in the second hour hand walking direction under the traction action of the second driving force, so that the area of the second portion 22 is increased and the area of the first portion 21 is decreased, and the second hour hand walking direction is opposite to the first hour hand walking direction. For example, the first hour hand walking direction is clockwise, and the second hour hand walking direction is counterclockwise. It is understood that when the arrangement between the flexible display panel 20 and the support member 30 is changed, the first clockwise direction may be counterclockwise and the second clockwise direction may be clockwise, for example, when the first end 20A of the flexible display panel 20 is located at the left side of the support member 30.

In the related art, as shown in fig. 1, the second end portion 11B of the flexible display panel 11 is warped, and a large friction force is generated between the second end portion 11B and the chassis during the process of unfolding or folding the flexible display panel 11. The related art generally increases the driving force for unfolding or folding the flexible display panel 11 to overcome the friction between the second end portion 11B and the chassis, resulting in an increase in overall driving force of the display device 1.

In the display device 2 in the embodiment of the disclosure, the portion of the second end portion 20B of the flexible display panel 20, which is located on the surface of the following structure 31, is adsorbed on the surface of the following structure 31, and the second end portion 20B can be prevented from warping on the upper portion of the surface of the following structure 31, so that, in the process of unfolding or folding the flexible display panel 20, the friction between the second end portion 20B and the chassis can be reduced, the traction force required by unfolding or folding the flexible display panel 20 is reduced, and further, the overall driving force of the display device 2 is reduced.

The flexible display panel 20 in the embodiment of the present disclosure may include, but is not limited to, a flexible Organic Light-Emitting Diode (OLED) display panel, and the flexible display panel 20 may also be other types of flexible display panels.

Fig. 3A shows an external view schematic of a support assembly according to an embodiment of the present disclosure. FIG. 3B shows a schematic cross-sectional view of FIG. 3A taken along cut line A1-A1. FIG. 3C shows a schematic cross-sectional view of FIG. 3A taken along cut line A1-A1. Fig. 4A illustrates a schematic position diagram between a flexible display panel and a support structure when a display device according to an embodiment of the present disclosure is in an unfolded state. Fig. 4B illustrates a schematic position diagram between a flexible display panel and a support structure when the display device is in a stowed state according to an embodiment of the disclosure. Fig. 5A shows a schematic top view of a support assembly (with the follower structure omitted) according to an embodiment of the disclosure. Fig. 5B shows a schematic side view of the support assembly towards the first end side of the flexible display panel according to an embodiment of the disclosure (the follower structure is omitted).

Referring to fig. 3A to 5B, the supporting assembly 30 further includes a supporting structure 32, and the following structures 31 and the supporting structure 32 are alternately arranged along the extending direction of the supporting assembly 30. A gap I is provided between adjacent follower structures 31 and support structures 32. The support assembly 30 further includes a tensioning assembly 33, the tensioning assembly 33 being connected with the second end 20B of the flexible display panel 20, the tensioning assembly 33 being configured to provide a tensioning force to the flexible display panel 20 during deployment or stowing of the flexible display panel 20.

Exemplarily, the number of the following structures 31 and the supporting structures 32 may be one each; or, the number of the following structures 31 is two, and the number of the supporting structures 32 is one; alternatively, the number of the following structures 31 and the number of the supporting structures 32 are both multiple (as shown in fig. 3A). In an exemplary embodiment, in the extending direction of the supporting component 30 (vertical direction in fig. 5A), the first side (upper side) and the second side (lower side) are both the following structures 31, as shown in fig. 5A. Referring to fig. 2A to 5B, the following structures 31 and the supporting structures 32 are alternately disposed along the extending direction of the supporting assembly 30, and a portion of the second end portion 20B located on the following structure 31 is adsorbed on the surface of the following structure 31, so as to increase the friction between the second end portion 20B and the following structure 31 and prevent the second end portion 20B from sliding relative to the following structure 31 during the process of unfolding or folding the flexible display panel 20.

In addition, a gap I is formed between the adjacent following structures 31 and the supporting structure 32, so that the following structures 31 and the supporting structure 32 can be prevented from colliding, the friction force between the following structures 31 and the supporting structure 32 is reduced, and the reduction of the overall driving force of the display device 2 is facilitated.

During the process of unfolding the flexible display panel 20, the first end portion 20A of the flexible display panel 20 is applied with the first driving force, and the tensioning assembly 33 provides a tensioning force to the second end portion 20B of the flexible display panel 20, so that the first portion 21 of the flexible display panel 20 is kept flat, the flatness of the first portion 21 is increased, and the display quality of the first portion 21 is improved. During the process of collapsing the flexible display panel 20, the tension force provided by the tension assembly 33 may be used as a second driving force, which facilitates automatic collapsing of the flexible display panel 20. It should be noted that the first driving force may be generated manually by a user, for example, the user may pull the first end portion 20A by hand to unfold the flexible display panel 20, or a driving assembly may be provided to generate the first driving force to unfold the flexible display panel 20.

In one embodiment, as shown in fig. 4A and 4B, support structure 32 is provided with an opening 321 on a side facing first end 20A, and support assembly 30 is provided with an internal cavity 30A. The tensioning member 33 includes a rotating shaft 331 located in the inner cavity 30A and disposed along the extending direction of the supporting member 30, and a tensioning bar 332 wound around the rotating shaft 331, an outer end of the tensioning bar 332 passes through the opening 321 to be connected with the second end 20B of the flexible display panel 20, and the rotating shaft 331 is configured to rotate during the extending or retracting process of the flexible display panel 20 to provide a tensioning force to the flexible display panel 20 through the tensioning bar 332.

In one example, the support structure 32 is an annular support that may be defined by a one-piece rigid plate or a plurality of split rigid strips, e.g., the annular support shown in fig. 4A and 4B is defined by a one-piece rigid plate. Wherein, the extending direction of the plurality of split rigid lines is the same as the extending direction of the support component 30.

In another example, the opening 321 of the support structure 32 communicates with the inner cavity 30A of the support assembly 30, and the outer end of the tension bar 332 is connected with the second end 20B of the flexible display panel 20 through the opening 321, so that the second end 20B is prevented from moving relative to the follower structure 31 and the support structure 32 during the unfolding or folding of the flexible display panel 20.

In yet another example, the tension bar 332 includes a first segment and a second segment that are interconnected, and line segment L3 in FIGS. 4A and 4B illustrates the line of demarcation of the first segment from the second segment. The inner end of the tension bar 332 is located at one side of the first section, the outer end of the tension bar 332 is located at one side of the second section, and the first section is wound on the surface of the rotating shaft 331. In the process of unfolding the flexible display panel 20, the flexible display panel 20 drives the rotating shaft 331 to rotate along the first time hand walking direction under the action of the tensioning force, the length of the first section of the tensioning bar 332 is shortened, the length of the second section of the tensioning bar 332 is increased, and an unfolding space is provided for the flexible display panel 20. In the process of retracting the flexible display panel 20, the rotating shaft 331 rotates along the second hour hand walking direction, the flexible display panel 20 moves along with the rotating shaft 331 under the action of the tensioning force, the length of the first section of the tensioning bar 332 increases, and the length of the second section of the tensioning bar 332 decreases, so that a retracting space is provided for the flexible display panel 20. The material of the tension strip 332 may be flexible material with small deformation quantity, such as Polyimide (PI), Polyethylene Terephthalate (PET), or non-woven fabric.

Preferably, the opening 321 of the support structure 32 extends in the extension direction of the support assembly 30, and the width of the tension strip 332 is adapted to the length of the opening 321. For example, the width of the tension bar 332 is equal to the width of the opening 321, which can increase the connection firmness between the tension bar 332 and the second end portion 20B of the flexible display panel 20; alternatively, the tension bar 332 may have a width less than the width of the opening 321, which may reduce the friction between the tension bar 332 and the opening 321. "width" is the dimension of the component in the direction of extension of support assembly 30.

In an alternative example, the rotation of the rotation shaft 331 is configured to be driven by a motor or a torsion spring (not shown in the drawings). For example, in the process of unfolding the flexible display panel 20, the motor drives the rotating shaft 331 to rotate along the first time-hand walking direction; during the process of retracting the flexible display panel 20, the motor drives the rotating shaft 331 to rotate along the second hour hand walking direction. For another example, the end of the rotating shaft 331 is fixed by a torsion spring, and during the unfolding process of the flexible display panel 20, the movable end of the torsion spring approaches the fixed end along the first time-point walking direction, and the torsion spring elastically deforms and stores elastic potential energy; in the process of retracting the flexible display panel 20, the torsion spring releases elastic potential energy, and the movable end of the torsion spring is away from the fixed end along the second hour hand walking direction, so as to drive the rotating shaft 331 to rotate along the second hour hand walking direction.

In an alternative embodiment, the outer surface of the supporting structure 32 is flush with the outer surface of the following structure 31, and the supporting structure 32 can provide good support for the flexible display panel 20 on the surface thereof, which helps to increase the flatness of the flexible display panel 20. In another alternative embodiment, the outer surface of the support structure 32 is close to the central axis of the support assembly 30 relative to the outer surface of the follower structure 31, so that the support structure 31 is not in contact with the flexible display panel 20 thereon, which can reduce the friction of the flexible display panel 20 during the folding and unfolding process, and thus reduce the traction force required to fold or unfold the flexible display panel 20.

In one embodiment, as shown in fig. 3B, the support assembly 30 further includes a support ring 34, the following structure 31 is disposed on the outer side of the support ring 34, and the following structure 31 and the support ring 34 are connected by a movable structure 35, so that the following structure 31 can slide around the support ring 34 relative to the support ring 34.

Illustratively, the support ring 34 is made of a rigid material, and the support ring 34 supports the follower structure 31 to help maintain the shape of the follower structure 31 and avoid deformation of the follower structure 31. In addition, the movable structure 35 is located between the following structure 31 and the supporting ring 34, so that the friction force during the sliding process of the following structure 31 relative to the supporting ring 34 is reduced, and the reduction of the overall driving force of the display device 2 is facilitated.

In one embodiment, the end of support assembly 30 is provided with a mounting 36, and mounting 36 is used to mount support assembly 30 within a cabinet (not shown).

In one embodiment, as shown in fig. 3B and 6A to 6C, the movable structure 35 includes a limiting member 351 and a plurality of rolling bodies 352, the plurality of rolling bodies 352 are disposed on the surface of the support ring 34, the limiting member 351 is provided with a plurality of limiting holes 351A, the plurality of limiting holes 351A correspond to the plurality of rolling bodies 352 one by one, the limiting member 351 is disposed on the periphery of the support ring 34 and limits the corresponding rolling bodies 352 at preset positions through the limiting holes 351A.

The position limiting member 351 may be a flexible retainer, and the material of the position limiting member may be flexible material such as nylon, phenolic tape, teflon, and the like. The rolling elements 352 include, but are not limited to, rolling balls, needles, and rollers, and the material of the rolling elements 352 is a rigid material. The rolling body 352 is located in the stopper hole 351A such that the stopper hole 351A restricts the rolling body 352 at a predetermined position, thereby guiding the rolling body 352 to roll at the predetermined position. In addition, the limiting member 351 wraps the rolling body 352 to isolate the rolling body 352, and the limiting member 351 is located between the follower structure 31 and the support ring 34 to keep the rolling body 352 located between the follower structure 31 and the support ring 34 and prevent the rolling body 352 from falling off.

In one embodiment, the plurality of rolling elements 352 are arranged in a plurality of rows along the extending direction of the supporting assembly 30, each row of rolling elements 352 corresponds to one limiting member 351, the limiting members 351 include two oppositely-arranged limiting strips 351B and a plurality of clamping members 351C, the two limiting strips 351B are formed with relatively-curved arcs to form limiting holes 351A, and the clamping members 351C are located between two adjacent limiting holes 351A and clamp and connect the two limiting strips 351B. Compared to the rolling elements 352 arranged in a single row, the rolling elements 352 arranged in multiple rows can effectively reduce the friction between the follower structure 31 and the support ring 34.

In one embodiment, a limiting groove 341 is provided on a surface of the support ring 34 to provide a preset position for the rolling body 352, and the rolling body 352 is rotatable within the limiting groove 341 under the limitation of the limiting hole 351A, so that the follower structure 31 can slide around the support ring 34 relative to the support ring 34.

The shape of the limiting groove 341 is adapted to the shape of the rolling body 352, and a part of the rolling body 352 is accommodated in the limiting groove 341 under the limitation of the limiting hole 351A, so that the rolling body 352 is limited in the limiting groove 341 to roll, and the rolling body 352 is prevented from shifting or misplacing.

It should be noted that the limiting member 351 is not limited to the above structure, and the limiting member 351 may be a sheet-shaped body matching with the shape of the supporting ring 34, and the limiting member 351 is sleeved on the periphery of the supporting ring 34.

In one embodiment, as shown in fig. 7A and 7B, the following structure 31 includes a following belt 311 and an absorbent body 312, the following belt 311 is sleeved outside the movable structure 35 and contacts with the movable structure 35, the absorbent body 312 is disposed on a surface of the following belt 311 and configured to generate an absorbing force on the flexible display panel 20, and the second portion 22 is absorbed on a surface of the absorbent body.

Optionally, the absorbent body 312 is a magnetic member, and the absorbent body 312 generates an attraction force to the flexible display panel 20, and the magnetic member includes, but is not limited to, a bar magnet or a soft magnetic bar; alternatively, the absorber is a negative pressure generator, and the absorber 312 performs negative pressure adsorption on the flexible display panel 20. The suction member 312 may be adhered to the surface of the follow-up belt 311.

Preferably, the follower belt 311 is a flexible base belt. The material of the follow-up belt 311 includes, but is not limited to, flexible materials with small deformation amount, such as Polyimide (PI), Polyethylene Terephthalate (PET), and non-woven fabric.

In one embodiment, the number of the absorbers 312 is plural, each of the absorbers 312 is disposed on the surface of the follower belt 311 in the extending direction of the support member 30, and the plural absorbers 312 are sequentially disposed at intervals in the circumferential direction of the follower belt 311.

Illustratively, the plurality of absorbers 312 are disposed at intervals and uniformly distributed along the circumferential direction of the follower belt 311, and the second end 20B of the flexible display panel 20 is absorbed on the surface of the absorber 312, ensuring that the second end 20B is free from warpage. Also, the portion of the first section 21 of the flexible display panel 20 located in the follower belt 311 and the second section 22 may be adsorbed on the surface of the adsorbent 312, which is advantageous in maintaining the flatness of the portion of the first section 21 located in the follower belt 311 and maintaining the smoothness of the second section 22.

In one embodiment, as shown in fig. 3B, the following structure 31 includes two opposite curved portions 31A and two opposite flat portions 31B, the curved portions 31A and the flat portions 31B are sequentially connected to form a closed race-track shape, and the flat portion 31B facing the user side supports the first portion of the flexible display panel 20.

In the related art, as shown in fig. 1, there is a gap between the support shaft 12 and the support plate 14, and the support shaft 12 and the support plate 14 cannot provide good support for the first portion 111, so that the area of the first portion 111 between the support shaft 12 and the support plate 14 is prone to wrinkle or to dent, resulting in poor flatness of the first portion 111.

The curved portion 31A and the flat portion 31B of the following structure 31 of the embodiment of the present disclosure are sequentially connected to form a closed loop shape like a racetrack, so that there is no gap between the curved portion 31A and the flat portion 31B, and the curved portion 31A and the flat portion 31B are in smooth transition, so that the following structure 31 can provide good support for the first portion 21, prevent the first portion 21 from being wrinkled or dented, increase the flatness of the first portion 21, and facilitate to improve the display quality of the first portion 21.

Preferably, the shape of the support structure 32 and the support ring 34 is adapted to the shape of the follower structure 31, e.g. the support structure 32 is race track shaped with openings 321 and the support ring 34 is race track shaped.

In one embodiment, the support structure 32 and the support ring 34 may be a unitary structure. In one embodiment, the support structure 32 and the support ring 34 may be separate structures, and the display device 2 may include a support frame (not shown) to which the support structure 32 and the support ring 34 are fixed along the extending direction of the support assembly 30.

In the description of the present specification, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present disclosure and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present disclosure.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.

In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different features of the disclosure. In order to simplify the disclosure of the present disclosure, specific example components and arrangements are described above. Of course, they are merely examples and are not intended to limit the present disclosure. Moreover, the present disclosure may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of various changes or substitutions within the technical scope of the present disclosure, which should be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A display device, comprising a flexible display panel and a support component, wherein the flexible display panel comprises a first part and a second part which are connected with each other, the flexible display panel comprises a first end part positioned on one side of the first part and a second end part positioned on one side of the second part, the first end part is far away from the support component, the second part is arranged on the surface of the support component in a winding way, the flexible display panel is configured to be unfolded or folded under the action of a driving force to change the area of the first part, the support component comprises a follow-up structure, the follow-up structure moves along with the flexible display panel in the unfolding or folding process of the flexible display panel, and the part of the second end part positioned on the surface of the follow-up structure is adsorbed on the surface of the follow-up structure.

2. The display device according to claim 1, wherein the support assembly further comprises support structures, the follower structures and the support structures are alternately arranged along an extension direction of the support assembly, a gap is arranged between adjacent follower structures and the support structures, the support assembly further comprises a tensioning assembly connected with the second end of the flexible display panel, and the tensioning assembly is configured to provide a tensioning force to the flexible display panel during the unfolding or folding of the flexible display panel.

3. The display device according to claim 2, wherein an opening is provided at a side of the support structure facing the first end, the support member is provided with an inner cavity, the tensioning member comprises a rotating shaft located in the inner cavity and arranged along an extending direction of the support member and a tensioning bar wound on the rotating shaft, an outer end of the tensioning bar passes through the opening to be connected with the second end of the flexible display panel, and the rotating shaft is configured to rotate during the unfolding or folding process of the flexible display panel to provide a tensioning force to the flexible display panel through the tensioning bar.

4. The display device of claim 2, wherein the outer surface of the support structure is flush with the outer surface of the follower structure, or wherein the outer surface of the support structure is proximate to the central axis of the support assembly relative to the outer surface of the follower structure.

5. The display device as claimed in any one of claims 1 to 4, wherein the support assembly further comprises a support ring, the follower structure is disposed on an outer side of the support ring, and the follower structure is connected to the support ring via a movable structure so that the follower structure can slide around the support ring relative to the support ring.

6. The display device according to claim 5, wherein the movable structure comprises a limiting member and a plurality of rolling elements, the plurality of rolling elements are disposed on a surface of the support ring, the limiting member is provided with a plurality of limiting holes, the plurality of limiting holes correspond to the plurality of rolling elements one to one, the limiting member is disposed on an outer periphery of the support ring and limits the corresponding rolling elements at preset positions through the limiting holes.

7. The display device according to claim 6, wherein the plurality of rolling bodies are arranged in a plurality of rows along an extending direction of the support assembly, each row of rolling bodies corresponds to one of the limiting members, the limiting members include two oppositely-arranged limiting strips and a plurality of clamping members, the two limiting strips are formed with relatively-curved arcs to form the limiting holes, and the clamping members are located between two adjacent limiting holes and clamp and connect the two limiting strips.

8. A display device as claimed in claim 6, characterized in that the support ring is provided on its surface with a stop groove which provides the predetermined position for the rolling elements, which rolling elements are rollable within the stop groove under the definition of the stop hole, so that the follower structure can slide around the support ring relative to the support ring.

9. The display device according to claim 5, wherein the follower structure comprises a follower belt provided outside the movable structure and in contact with the movable structure, and an absorbent provided on a surface of the follower belt and configured to be capable of generating an absorbing force on the flexible display panel, the second portion being absorbed on a surface of the absorbent.

10. The display device according to claim 9, wherein the number of the suction bodies is plural, each of the suction bodies is provided on a surface of the follower belt in an extending direction of the support member, and the plural suction bodies are provided at intervals in sequence in a circumferential direction of the follower belt.

11. A display device as claimed in claim 10, characterised in that the follower tape is a flexible base tape.

12. The display device according to claim 1, wherein the following structure comprises two curved portions and two flat portions, the two curved portions and the two flat portions are oppositely arranged, the curved portions and the flat portions are sequentially connected to form a closed ring shape, and the flat portion facing a user side supports the first portion of the flexible display panel.