CN113808480B

CN113808480B - Display device

Info

Publication number: CN113808480B
Application number: CN202010549366.XA
Authority: CN
Inventors: 李亮
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2023-05-30
Anticipated expiration: 2040-06-16
Also published as: CN113808480A

Abstract

The embodiment of the application provides a display device, which comprises a first moving body; the second moving body is slidably connected with the first moving body so as to enable the first moving body and the second moving body to be switched between a folded state and an unfolded state; the rotating mechanism is arranged on the first moving body and can rotate relative to the first moving body, and comprises a first shaft body, a second shaft body and a buffer piece, wherein the second shaft body is coaxially arranged with the first shaft body, and the second shaft body is connected with the first shaft body through the buffer piece; one end of the flexible screen assembly is arranged on the first moving body, the other end of the flexible screen assembly is arranged on the second moving body, and the flexible screen assembly is arranged around the first shaft body; when the second shaft body rotates, the second shaft body acts on the buffer piece with first acting force, so that the buffer piece deforms, and impact force of the second shaft body on the flexible screen assembly is reduced. So that the likelihood of damage to the flexible screen assembly may be reduced.

Description

Display device

Technical Field

The application relates to the technical field of display, in particular to a display device.

Background

With the development of electronic technology, the degree of intellectualization of display devices such as smartphones is increasing. The display device may display a picture through its display screen.

Among them, the flexible display screen is paid attention to because of its characteristics of being foldable and bendable, and the overall size of the display device can be reduced by winding the flexible display screen into the display device by the winding mechanism. However, the flexible display screen is easily damaged due to the instantaneous tension generated by the winding mechanism during rotation.

Disclosure of Invention

The embodiment of the application provides a display device, which can reduce the damage of a flexible display screen in the rolling process.

An embodiment of the present application provides a display device, including:

a first moving body;

the second moving body is slidably connected with the first moving body so as to realize the switching between the first moving body and the second moving body in a furled state and an unfolded state;

the rotating mechanism is arranged at one end of the first moving body, the rotating mechanism can rotate relative to the first moving body, the rotating mechanism comprises a first shaft body, a second shaft body and a buffer piece, an installation space is arranged in the first shaft body, the second shaft body is arranged in the installation space, the second shaft body and the first shaft body are coaxially arranged, and the second shaft body is connected with the first shaft body through the buffer piece; and

the flexible screen assembly is arranged at one end of the first moving body, the other end of the flexible screen assembly is arranged at the second moving body, and the flexible screen assembly is arranged around the first shaft body;

when the second shaft body rotates, the second shaft body applies a first acting force to the buffer piece so that the buffer piece deforms to reduce the impact force of the second shaft body on the first shaft body and the flexible screen assembly.

According to the embodiment of the application, the first shaft body is connected with the second shaft body through the buffer piece, when the second shaft body rotates, the second shaft body acts on the buffer piece with the first acting force, the buffer piece deforms, the buffer piece can reduce the instant pulling force generated by the second shaft body during rotation, so that the flexible screen assembly can be protected, and the damage possibility of the flexible screen assembly can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts throughout the following description.

Fig. 1 is a perspective view of a first structure of a display device according to an embodiment of the present application.

Fig. 2 is a schematic view of the display device shown in fig. 1 in an unfolded state.

Fig. 3 is a sectional view of the display device shown in fig. 2 along the P-P direction.

Fig. 4 is a schematic view of a first structure of a rotating mechanism in the display device shown in fig. 3.

Fig. 5 is a schematic view of a second structure of the rotating mechanism in the display device shown in fig. 3.

Fig. 6 is a schematic view of a third structure of the rotating mechanism in the display device shown in fig. 3.

Fig. 7 is a schematic view of a fourth structure of the rotating mechanism in the display device shown in fig. 3.

Fig. 8 is a schematic view of a portion of a flexible screen assembly and a turning mechanism mated in accordance with an embodiment of the present application.

Fig. 9 is a schematic view of the forces experienced by the layers of the flexible screen assembly of the present embodiment as it moves about a rotating mechanism.

Fig. 10 is a schematic view of a fifth structure of a rotating mechanism in a display device according to an embodiment of the present application.

Fig. 11 is a schematic diagram of a movement state of a display screen assembly and a rotation mechanism according to an embodiment of the present application.

Fig. 12 is a schematic view of a sixth structure of a rotating structure in a display device according to an embodiment of the present application.

Fig. 13 is a schematic view of a seventh structure of a rotating mechanism in a display device according to an embodiment of the present application.

Fig. 14 is a schematic view of an eighth structure of a rotating mechanism in a display device according to an embodiment of the present application.

Fig. 15 is a schematic structural diagram of a rotating mechanism and a part of flexible screen assembly in a display device according to an embodiment of the present application.

Fig. 16 is a schematic structural diagram of a flexible screen assembly in a display device according to an embodiment of the present application.

Fig. 17 is another schematic structural diagram of a flexible screen assembly in a display device according to an embodiment of the present application.

Fig. 18 is a second structural perspective view of the display device according to the embodiment of the present application.

Fig. 19 is a schematic view of the display device shown in fig. 18 in an unfolded state.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present application based on the embodiments herein.

Referring to fig. 1 and fig. 2, fig. 1 is a perspective view of a first structure of a display device according to an embodiment of the present application, and fig. 2 is a schematic view of the display device shown in fig. 1 in an unfolded state. The display device 20 may include a first moving body 100, a second moving body 200, and a flexible screen assembly 300. The first and second moving

bodies

100 and 200 are slidably coupled to relatively move the first and second moving

bodies

100 and 200 in a direction approaching or moving away from each other, so that switching between the unfolded state and the folded state can be achieved. The folded state may refer to fig. 1, that is, a state in which the first moving body 100 and the second moving body 200 are relatively moved in a direction approaching each other to be finally formed. The unfolded state may refer to fig. 2, that is, a state in which the first moving body 100 and the second moving body 200 are relatively moved in a direction away from each other.

It should be noted that, there may be various unfolding states of the first moving body 100 and the second moving body 200, for example, the maximum moving distance of the first moving body 100 and the second moving body 200 in the direction of moving away from each other is H, and the first moving body 100 and the second moving body 200 may move away from each other in the folded state so as to achieve the unfolding states that one quarter H, one half H, and three quarters H form different distances with equal distances. The state gradually farther from the gradient may be sequentially defined as a first expanded state, a second expanded state, a third expanded state, and the like.

It should be further noted that, when the first moving body 100 and the second moving body 200 are in the first unfolded state, such as the distance that the first moving body 100 and the second moving body 200 are relatively far away from each other in the first unfolded state is one-fourth H, the first moving body 100 and the second moving body 200 may still move away from each other to reach the second unfolded state, such as the distance that the first moving body 100 and the second moving body 200 are relatively far away from each other in the second unfolded state is one-half H.

It should be understood that the one or more deployed states of the first and second moving

bodies

100 and 200 according to the embodiment of the present application are only examples, and do not constitute limitations on the deployed states of the first and second moving

bodies

100 and 200 according to the embodiment of the present application.

The embodiment of the application can design the positioning structure for the unfolding state of the display device 20 to realize positioning so as to keep different unfolding states of the display device. The positioning structure can be realized by adopting a magnetic positioning piece, and the positioning structure can also realize positioning by adopting the matching of the positioning piece and a positioning groove.

The first moving body 100 and the second moving body 200 may be driven to move each other in an electric manner, such as providing one or more driving motors, the same number of driving assemblies as the motors, a driving assembly may include one or more gears, one or more racks, or one or more driving belts, etc. The driving motor may drive the first and second moving

bodies

100 and 200 to move toward or away from each other through the transmission assembly. Of course, the first moving body 100 and the second moving body 200 may be driven to move closer to or farther from each other by a manual operation.

One end of the flexible screen assembly 300 is fixedly connected with the first moving body 100, and the other end of the flexible screen assembly 300 is fixedly connected with the second moving body 200. The first and second moving

bodies

100 and 200 may support the flexible screen assembly 300. The first moving body 100 and the second moving body 200 may drive the flexible screen assembly 300 to move together or drive the flexible screen assembly 300 to move during the mutual movement, so that the length of the flexible screen assembly 300 may be adjusted, and thus the size of the display area of the display device 20 may be changed.

When the first and second moving

bodies

100 and 200 relatively move in a direction approaching each other, the first and second moving

bodies

100 and 200 may drive a portion of the flexible screen assembly 300 to be received inside the display device 20, such as the second moving body 200 of the display device 20. When the first and second moving

bodies

100 and 200 relatively move in a direction away from each other, the first and second moving

bodies

100 and 200 may drive a portion of the flexible screen assembly 300 to protrude from the inside of the display device 20, such as the second moving body 200.

The non-display surface of the flexible screen assembly 300 is disposed on one surface of the first moving body 100 and one surface of the second moving body, or the non-display surface of the flexible screen assembly 300 is disposed on one surface of the first moving body 100 and one surface of the second moving body 200. Whether the first and second moving

bodies

100 and 200 are in a folded state or in an unfolded state, the flexible screen assembly 300 covers one side of the first moving body 100 and one side of the second moving body 200, except for the difference in the size of the coverage area.

When the first moving body 100 and the second moving body 110 are in the folded state, a part of the other surface of the first moving body 100 is located in the second moving body 200. In other words, when the first moving body 100 and the second moving body 200 are in the folded state, a part of the first moving body 100 is received in the second moving body 200, and at this time, the other surface of the first moving body 100 is blocked by the second moving body 200. While the other side of the second moving body 200 serves as a housing of the display device 20.

When the first moving body 100 and the second moving body 200 are in the unfolded state, a part of the other surface of the first moving body 100 is positioned outside the second moving body 200, or is exposed outside, or is not shielded by the second moving body 200.

The present embodiment abuts, such as abutting, the side positions of the first moving body 100 and the second moving body 200 when the first moving body 100 and the second moving body 200 are in the collapsed state. So that the overall structure of the first moving body 100 and the second moving body 200 can be seen from the external appearance.

It should be noted that, when the flexible screen assembly 300 moves following the movement of the first moving body 100 and the second moving body 200, a large friction force is generated, and the flexible screen assembly 300 is easily damaged.

Based on this, in the embodiment of the present application, a rotation mechanism may be disposed in the display device 20, and when the flexible screen assembly 300 needs to move, the flexible screen assembly may also rotate around the rotation mechanism, so that the friction force of the flexible screen assembly 300 during the movement process may be reduced.

Referring to fig. 3, fig. 3 is a cross-sectional view of the display device shown in fig. 2 along the P-P direction. The display device 20 may further include a rotation mechanism 400, and the rotation mechanism 400 may be provided to one of the moving bodies of the display device 20. Such as the rotation mechanism 400 is provided at the first moving body 100, and the rotation mechanism 400 may be provided to an end position of the first moving body 100, or the rotation mechanism 400 may be provided near an end of the first moving body 100.

Referring to fig. 4, fig. 4 is a schematic diagram of a first structure of a rotating mechanism in the display device shown in fig. 3. The rotation mechanism 400 may include a first shaft body 410, a second shaft body 420 and a buffer member 430, wherein an installation space 412 is provided in the first shaft body 410, the second shaft body 420 and the buffer member 430 are both disposed in the installation space 412, and the second shaft body 420 and the first shaft body 410 are coaxially disposed, i.e. the second shaft body 420 is sleeved on an outer periphery of the first shaft body 410.

The second shaft body 420 is connected to the first shaft body 410 through the buffer member 430, that is, one end of the buffer member 430 is connected to an inner edge of the first shaft body 410 and the other end is connected to an outer edge of the second shaft body 420. The flexible screen assembly 400 is disposed about a first axis 410. When the second shaft 420 rotates, the buffer member 430 may drive the first shaft 410 to rotate, so that the flexible screen assembly 300 may move around the first shaft 410. Because the second shaft body 420 is rotated, the second shaft body 420 can apply the first acting force to the buffer member 430, the buffer member 430 deforms, and the instant impact force generated by the second shaft body 420 during rotation can be reduced, so that the impact force of the second shaft body 420 on the first shaft body 410 can be reduced, the impact force of the first shaft body 410 on the flexible screen assembly 300 can be reduced, and the impact force of the rotating mechanism 400 on the flexible screen assembly 300 during rotation can be prevented from damaging the flexible screen assembly 300.

As shown in fig. 4, the buffer member 430 may include an elastic column 431, where the elastic column 431 has elasticity, and one end of the elastic column 431 is fixedly connected to the first shaft body 410, and the other end is fixedly connected to the second shaft body 420. When the second shaft body 420 rotates, the second shaft body 420 applies a first acting force to the elastic column 431, so that the elastic column 431 deforms, and the impact force applied to the first shaft body 410 can be reduced, so that the impact force applied to the flexible screen assembly 300 by the first shaft body 410 can be reduced, and further, the impact force applied to the flexible screen assembly 300 during the movement of the rotating mechanism 400 can be relieved, and the possibility of damage to the flexible screen assembly 300 can be reduced.

The elastic column 431 may be made of a soft material or a flexible material.

The buffer 430 may include a plurality of elastic posts 431, for example, two, three, four, etc. For example, the buffer member 430 includes two elastic posts 431, and the two elastic posts 431 may be symmetrically disposed with respect to the second shaft body 420, and it is understood that the two elastic posts 431 may be asymmetrically disposed with respect to the second shaft body 420.

The elastic post 431 may be connected to the first shaft body 410 and the second shaft body 420 by welding, screw connection, clamping connection, or the like.

It will be appreciated that referring to fig. 5, fig. 5 is a schematic diagram illustrating a second structure of the rotating mechanism in the display device shown in fig. 3. The buffer member 430 includes a spring 432, one end of the spring 432 is fixedly connected with the first shaft body 410, the other end of the spring 432 is fixedly connected with the second shaft body 420, when the second shaft body 420 rotates, the second shaft body 420 acts on the spring 432 with a first acting force, so that the spring 432 is deformed, and an impact force acting on the first shaft body 410 can be reduced, thereby reducing the impact force acting on the flexible screen assembly 300 by the first shaft body 410, further, the impact force acting on the flexible screen assembly 300 when the rotating mechanism 400 moves can be relieved, and the possibility that the flexible screen assembly 300 is damaged can be reduced.

The buffer 430 may include a plurality of springs 432, e.g., two, three, four, etc. For example, the buffer 430 includes four springs 432, and the four springs 432 may be symmetrically disposed with respect to the second shaft body 420, and it is understood that the four springs 432 may be asymmetrically disposed with respect to the second shaft body 420.

The four springs 432 may be connected to the first shaft 410 and the second shaft 420 by welding, screw connection, clamping connection, or the like.

It will be appreciated that when the buffer 430 is a spring 432, the spring 432 is prevented from being excessively deformed during rotation of the second shaft body 420, which reduces the winding efficiency of the flexible screen assembly 300. Referring to fig. 6, fig. 6 is a schematic diagram illustrating a third structure of the rotating mechanism in the display device shown in fig. 3. The rotating mechanism 100 further includes a limiting post 440, one end of the limiting post 440 is connected to the first shaft body 410, and the other end of the limiting post 440 extends toward the second shaft body 420. Wherein, the end of the limiting post 440 away from the first shaft body 410 is spaced from the second shaft body 420, i.e. the end of the limiting post 440 away from the first shaft body 410 is not in contact with the second shaft body 420.

Wherein, spacing post 440 is located to spring 432 cover, through locating spacing post 440 with spring 432 cover, because spring 432 one end is connected with first axis body 410, and the other end is connected with second axis body 420, when second axis body 420 rotates, because spacing post 440's spacing, spring 432 can not excessively deform, can improve the efficiency of flexible screen subassembly 300 rolling, improves user experience.

Referring to fig. 7, fig. 7 is a schematic diagram illustrating a fourth structure of a rotating mechanism in the display device shown in fig. 3. The rotation mechanism 400 may further include two pins 450, one pin 450 may be fixedly connected to one end of the second shaft body 420, and the other pin 450 may be fixedly connected to the other end of the second shaft body 420. The two pins 450 may be fixedly connected to the first moving body 100, such as the first moving body 100 is provided with a shaft hole for placing the pins 450, and the rotation of the rotation mechanism 400 relative to the first moving body 100 may be achieved by the cooperation of the pins 450 and the shaft hole.

Wherein the first shaft body 410 and the second shaft body 420 may be made of a hard material, such as metal.

During assembly of the display device 20, a portion of the flexible screen assembly 300 may be designed around the first shaft 410. Thus, the flexible screen assembly 300 moves about the first axis 410 when moving. However, since the flexible screen assembly 300 has a multi-layered structure when the flexible screen assembly 300 moves around the first shaft 410, and material properties such as strength, young's modulus, etc. of the respective layers of the flexible screen assembly 300 are not uniform, stress applied to the respective layers of the flexible screen assembly 300 during the movement is different, which easily causes breakage of the display surface of the display screen assembly 300 and non-display screen wrinkles of the display screen assembly 300.

Referring to fig. 8 and 9, fig. 8 is a schematic view of a portion of the flexible screen assembly according to the embodiment of the present application and the rotating mechanism, and fig. 9 is a schematic view of the forces applied to the layers of the flexible screen assembly according to the embodiment of the present application when the flexible screen assembly moves around the rotating mechanism. When the flexible screen assembly 300 moves in the first direction or the second direction, the flexible screen assembly 300 moves around the rotation mechanism 400, and at this time, the flexible screen assembly 300 may receive a tensile force moving in the first direction or the second direction, and the tensile force applied to the layer structure (such as the cover plate, the polarizer, etc.) of the display surface of the flexible screen assembly 300 is greater due to the non-uniformity of the material properties of the layer structure of the flexible screen assembly 300, such as strength, young's modulus, etc. And thus the layer structure of the display surface of the flexible screen assembly 300 is easily broken.

At the same time, the flexible screen assembly 300 applies its force to the outer surface of the rotation mechanism 400, and still generates friction due to the rotation of the flexible screen assembly 300 around the outer surface of the rotation mechanism 400, where the pressing force applied to the layer structure (such as the display layer) of the non-display surface of the flexible screen assembly 300 is large. Thus easily causing a problem of wrinkling of the layer structure of the non-display surface of the flexible screen assembly 300.

It should also be noted that during rotation of flexible shield assembly 300 about rotation mechanism 400, flexible shield assembly 300 receives a pulling action that may apply a force to rotation mechanism 400. The rotation mechanism 400 now acts on the flexible screen assembly 300 with a counter force such as counter force F.

The first direction may be understood as a direction in which the first moving body 100 and the second moving body 200 move toward each other. The second direction may be understood as a direction in which the first moving body 100 and the second moving body 200 move away from each other.

Based on this, in the embodiment of the present application, a soft material may be disposed on the outer surface of the first shaft body 410, so as to implement protection for the flexible screen assembly 300.

Referring to fig. 10 and fig. 11, fig. 10 is a schematic diagram of a fifth structure of a rotating mechanism in a display device according to an embodiment of the present application, and fig. 11 is a schematic diagram of a movement state of a display screen assembly and the rotating mechanism according to an embodiment of the present application. The rotation mechanism 400 may further include a sleeve 460, and the sleeve 460 may be sleeved on the outer surface of the first shaft body 410. The sleeve 460 may deform upon receiving a force. When the flexible screen assembly 300 moves around the rotation mechanism 400, the flexible screen assembly 300 may apply a force, such as a second force, to the sleeve 460, which may deform the sleeve 460, thereby reducing stress on the portion of the flexible screen assembly 300 around the rotation mechanism 400. The likelihood of breakage of the display surface of the flexible screen assembly 300 during movement is thereby reduced. While also reducing the likelihood of the flexible screen assembly 300 buckling during movement about the rotation mechanism 400.

The smoothness of the sleeve 460 of the present embodiment may be greater than that of the first shaft body 410, so that the friction force of the non-display surface of the flexible screen assembly 300 when moving around the rotation mechanism 400 is reduced, so as to protect the flexible screen assembly 300. The likelihood of the flexible screen assembly 300 buckling during movement about the swivel mechanism 400 may be further reduced.

The sleeve 460 may be made of a soft material or a flexible material. Such as rubber, is soft, is easy to deform and has smooth surface.

The sleeve 460 of the present embodiment may have a one-layer structure, which may have a certain thickness. Of course, it is understood that the sleeve 460 may also have a multi-layer structure, and the layer structure of the sleeve 460 may be set according to actual requirements. The first shaft body 410 may have a cylindrical structure, and a cross section thereof may have a circular structure. The sleeve 460 may have a cylindrical structure, and a cross section of the sleeve may have a circular ring structure. The thickness of the sleeve 460 may be set according to practical requirements.

When the flexible screen assembly 300 is not moving about the rotation mechanism 400, the rotation mechanism 400 may remain in the first state, i.e., the rotation mechanism 400 does not receive the force of the flexible screen assembly 300. The flexible screen assembly 300, when moved about the rotation mechanism 400, switches the rotation mechanism 400 from a first state to a second state in which the sleeve 460 is deformed, such as from a circular configuration to an oval configuration. I.e. the cross-section of the sleeve 460 of the rotation mechanism 400 in the first state is of circular or annular configuration. And the cross-section of the sleeve 460 of the rotation mechanism 400 in the second state is of an elliptical configuration.

It should be noted that the manner of protecting the flexible screen assembly 300 according to the embodiments of the present application is not limited thereto.

Referring to fig. 12, fig. 12 is a schematic view of a sixth structure of a rotating structure according to an embodiment of the present application. The rotation mechanism 400 may also include a spacer layer 470. The first shaft body 410 and the shaft sleeve 460 may be spaced from each other, or a space may be formed between the first shaft body 410 and the shaft sleeve 460, and a spacer layer 470 may be disposed in the space, or a predetermined gas may be filled in the space. The thickness of the sleeve 460 may be designed to be thinner, and the sleeve 460 may be deformed in the space between the spacers 470, i.e. the sleeve 460 may be deformed by the spacers 470.

The spacer layer 470 may be understood as a structure that is easily deformed, such as a honeycomb structure, a mesh structure, or the like. The spacer layer 470 may also be understood as a pre-set gas, such as air. It should be noted that the structure of the spacer layer 470 is not limited thereto.

Wherein, the sleeve 460 and the spacer 470 may be made of soft materials or flexible materials. And the hardness of the material of the spacer layer 470 may be designed to be less than the hardness of the material of the sleeve 460.

In this embodiment, the spacer layer 470 is designed between the shaft sleeve 470 and the first shaft body 410, so that the deformation of the rotation mechanism 400 is easier to be realized, and the deformation amount of the spacer layer 470 can be increased compared with that of a single shaft sleeve. Therefore, the design of the shaft sleeve 460 and the spacer layer 470 is easier to deform, the deformation amount is larger, and the protection effect on the flexible screen assembly 300 is better.

When the flexible screen assembly 300 moves around the rotation mechanism 400, the flexible screen assembly 300 may apply a force, such as a second force, to the sleeve 460, which may deform the sleeve 460 within the spatial extent of the spacer layer 470, thereby reducing stress on the portion of the flexible screen assembly 300 around the rotation mechanism 400. Thereby reducing the curvature variation of the flexible screen assembly 300 and thus reducing the likelihood of breakage of the display surface of the flexible screen assembly 300 during movement. While also reducing the likelihood of the flexible screen assembly 300 buckling during movement about the rotation mechanism 400.

When the flexible screen assembly 300 is not moving about the rotation mechanism 400, the rotation mechanism 400 may remain in a third state, i.e., the rotation mechanism 400 does not receive the force of the flexible screen assembly 300. Upon movement of the flexible screen assembly 300 about the rotation mechanism 400, the rotation mechanism 400 switches from a third state to a fourth state in which the sleeve 460 deforms within the spatial extent of the spacer layer 480, such as from a circular configuration to an oval configuration. I.e. the cross-section of the sleeve 460 of the rotation mechanism 400 in the third state is of circular or annular configuration. And the cross-section of the sleeve 460 of the rotation mechanism 400 in the fourth state is of an elliptical configuration. Likewise, the spacer layer 470 changes with the change in the sleeve 460. Such as spacer layer 470 of rotation mechanism 400, is circular in cross-section or annular in cross-section in the third state. And the cross section of the spacer layer 470 of the rotation mechanism 400 in the fourth state is of an elliptical configuration.

Referring to fig. 13 and 14, fig. 13 is a schematic view of a seventh structure of a rotating mechanism in a display device according to an embodiment of the present application, and fig. 14 is a schematic view of an eighth structure of the rotating mechanism in the display device according to an embodiment of the present application. The sleeve 460 of the rotation mechanism 400 is provided with a plurality of spacing grooves 401, so that when the flexible screen assembly 300 moves around the rotation mechanism 400, wrinkles are prevented from being generated by the cooperation of the non-display surface of the flexible screen assembly 300 and the sleeve 460.

In order to better protect the flexible screen assembly 300, the present patent adds a soft material to the original structure of the first shaft body 410, and the soft material is discontinuous, so that the flexible screen assembly 300 is ensured not to have the problem of wrinkling (peeling), and meanwhile, the intermittent soft material can bring about a buffer zone for the force between the flexible screen assembly 300 and the first shaft body 410, and simultaneously, the curvature change of the flexible screen assembly 300 can be reduced, thereby effectively protecting the flexible screen assembly.

Referring to fig. 15 and fig. 16, fig. 15 is a schematic structural diagram of a rotating mechanism and a part of a flexible screen assembly in a display device according to an embodiment of the present application, and fig. 16 is a schematic structural diagram of a flexible screen assembly in a display device according to an embodiment of the present application. The flexible screen assembly 300 may include a display layer 310, a cover layer 320, and a protective layer 330.

The display layer 310 may include a substrate sub-layer, a circuit arrangement sub-layer, a light emitting sub-layer, a touch sub-layer, a polarizing structure sub-layer, and the like.

The cover plate layer 320 may include a cover plate, such as a light-transmitting glass, among others.

Wherein the protective layer 330 may include a plurality of spacer bars 332, a spacer bar 332 may be placed into a spacer groove 401 during movement of the flexible screen assembly 300. It will be appreciated that two adjacent spacer layers form a shaft portion and that a plurality of shaft portions form a shaft sleeve 460 structure. The protective layer 330 may be made of a soft material such as rubber.

On the one hand, a cushioned zone may be created to the force between the flexible screen assembly 300 and the first shaft 410, while the change in curvature of the flexible screen assembly 300 may be reduced, thereby effectively protecting the flexible screen assembly 300. And at the same time, the effect of gear transmission can be achieved, so as to reduce the stress of the flexible screen assembly 300 (avoid the sliding action caused by the direct contact between the flexible screen assembly 300 and the first shaft body 410, thereby damaging the flexible screen assembly).

It should be noted that the protective layer 330 of the non-display surface of the flexible screen assembly 300 may also be a continuous structure, and referring to fig. 17, fig. 17 is another schematic structural diagram of the flexible screen assembly 300 in the display device according to the embodiment of the present application. The protective layer 330 of the flexible screen assembly 300 shown in fig. 17 may be mated with the rotating assembly 400 shown in any of fig. 4-14.

Referring to fig. 18 and 19, fig. 18 is a perspective view of a second structure of the display device according to the embodiment of the present application, and fig. 19 is a schematic view of the display device shown in fig. 18 in an unfolded state.

The display device 40 includes a first moving body 42, a second moving body 44, and a flexible screen assembly 46. Wherein the first moving body 42 and the second moving body 44 are movable with each other, such as slidable with each other, to achieve switching between the collapsed state and the expanded state. One end of the flexible screen assembly 46 is fixed on the first moving body 42, and the other end is fixed on the second moving body 44, and the first moving body 42 and the second moving body 44 can move the flexible screen assembly 46 mutually, so that a part of the flexible screen assembly 46 can be contained in the first moving body 42 and the second moving body 44, or a part of the flexible screen assembly 46 can be displayed from the first moving body 42 and the second moving body 44. So that the display area of the flexible screen assembly 46 can be changed.

The first and second moving

bodies

42, 44 of the display device 40 can be relatively moved in one of the directions to change the display area of the flexible screen assembly 46. During the movement of the first and second moving

bodies

42 and 44, the top and bottom ends of the display screen of the flexible screen assembly 46 may be unchanged, while the lateral display contents of the flexible screen assembly 46 are changed. Alternatively, the first moving body 42 and the second moving body 44 may move with each other to change the width of the flexible screen assembly 46, and the length of the flexible screen assembly 46 is not changed, so that the top end position or the bottom end position of the display screen of the flexible screen assembly 46 is not changed.

The display device 40 may also include a rotating mechanism, which may refer to the above, and will not be described herein.

The foregoing has described in detail the display device provided by the embodiments of the present application, and specific examples have been used herein to illustrate the principles and embodiments of the present application, where the foregoing examples are provided to assist in understanding the methods of the present application and their core ideas; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims

1. A display device, comprising:

a first moving body;

when the second shaft body rotates, the buffer piece drives the first shaft body to rotate, so that the flexible screen assembly moves around the first shaft body, and when the second shaft body rotates, the second shaft body acts first acting force on the buffer piece, so that the buffer piece deforms, and impact force of the second shaft body on the first shaft body and the flexible screen assembly is reduced.

2. The display device according to claim 1, wherein the buffer member includes a spring, one end of the spring is connected to the first shaft, and the other end of the spring is connected to the second shaft.

3. The display device according to claim 2, wherein the rotation mechanism further comprises:

the limiting column is sleeved with the spring, one end of the limiting column is connected with the first shaft body, and the other end of the limiting column extends towards the direction of the second shaft body.

4. The display device according to claim 2, wherein the buffer member includes four springs symmetrically disposed with respect to the second shaft body.

5. The display device according to claim 1, wherein the buffer member includes an elastic column having one end connected to the first shaft body and the other end connected to the second shaft body.

6. The display device according to any one of claims 1 to 5, wherein the rotation mechanism further comprises:

the shaft sleeve is sleeved on the first shaft body; and

the spacer layer is arranged between the shaft sleeve and the first shaft body, and the shaft sleeve can deform in the space range of the spacer layer;

when the flexible screen assembly moves about the rotation mechanism, the flexible screen assembly applies a second force to the sleeve, causing the sleeve to deform to reduce stress of the flexible screen assembly about the rotation mechanism portion.

7. The display device of claim 6, wherein the spacer layer has a hardness less than a hardness of the sleeve.

8. The display device according to claim 6, wherein a cross section of the boss is a circular structure in a state where the second force is not received by the boss;

and the cross section of the shaft sleeve is of an oval structure under the condition that the shaft sleeve receives the second acting force.

9. The display device according to any one of claims 1 to 5, wherein the rotation mechanism further comprises:

a spacing space is formed between the shaft sleeve and the first shaft body, the spacing space is filled with preset gas, and the shaft sleeve can deform in the spacing space;

10. The display device of any one of claims 1-5, wherein the flexible screen assembly comprises a flexible screen and a protective layer disposed on a non-display surface of the flexible screen, the protective layer being of a soft material.