CN113628547A

CN113628547A - Display device

Info

Publication number: CN113628547A
Application number: CN202111120054.8A
Authority: CN
Inventors: 曾杰
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2021-07-15
Filing date: 2021-09-24
Publication date: 2021-11-09
Anticipated expiration: 2041-09-24
Also published as: CN113628547B

Abstract

A display device, the display device comprising: a housing; the flexible display screen can be accommodated in the shell in a curling way; the rotating shaft is arranged in the shell to support the flexible display screen to be curled and unfolded; the holding device is arranged in the shell and linked with the rotating shaft to limit the flexible display screen to move towards a non-target direction; the holding device comprises a first holding assembly arranged at least at one end of the rotating shaft, the first holding assembly comprises a first holding piece and a second holding piece, the first holding piece and the second holding piece are arranged oppositely, a braking structure is arranged between the first holding piece and the second holding piece, and the first holding piece and the second holding piece can move towards the opposite direction to form braking or move towards the opposite direction to release the braking; through setting up holding device, control the holder among the holding device and limit or remove the restriction with the motion to display panel, prevent that flexible display screen from receiving external force to harm at the in-process backward flow of rolling out or rolling in.

Description

Display device

Technical Field

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

Background

Along with the development of OLED display technology, flexible OLED technology is mature gradually, curls OLED display module and as the module of a novel display technology, will be the direction of the innovation development of global panel and module manufacturer in the future.

Generally, the curled OLED display module consists of a winding drum and a flexible display screen, wherein the flexible display screen can play images, a winding shaft is arranged in the winding drum, one end of the flexible screen is connected with the winding shaft, and the flexible screen can be wound in the winding drum. The first reel is used for realizing the rolling and the unfolding of the flexible screen, and the square accommodating body is used for accommodating the rolled flexible screen. The rigidity of the anti-curling strip on the second reel is utilized to fix the unfolded flexible screen, a certain anti-curling effect can be achieved, but the backflow and locking in the process of rolling out or rolling in the screen cannot be prevented.

Therefore, in the existing display device technology, there are problems that the screen reflows and cannot be locked in the process of rolling out or rolling in the screen, and the watching of a user is affected, and improvement is urgently needed.

Disclosure of Invention

The invention relates to a display device, which is used for solving the problems that in the prior art, a screen reflows and cannot be locked in the process of rolling out or rolling in the screen, and the watching of a user is influenced.

In order to solve the above problems, the technical scheme provided by the invention is as follows:

the present invention provides a display device, including: a housing; a flexible display screen rollably housed within the housing;

the rotating shaft is arranged in the shell and used for supporting the curling and the unfolding of the flexible display screen; and the number of the first and second groups,

the holding device is arranged in the shell, is linked with the rotating shaft and is used for limiting the flexible display screen to move towards a non-target direction;

the holding device comprises a first holding assembly arranged at least at one end of the rotating shaft, the first holding assembly comprises a first holding piece and a second holding piece, the first holding piece and the second holding piece are arranged oppositely, a braking structure is arranged between the first holding piece and the second holding piece, and the first holding piece and the second holding piece can move towards the opposite direction to form braking or move towards the opposite direction to release the braking.

In some embodiments, the detent structure is a tooth-shaped protrusion continuously disposed on the first holder and the second holder, and the tooth-shaped protrusion on the first holder is engaged with the tooth-shaped protrusion on the second holder.

In some embodiments, the tooth-shaped protrusion is a helical tooth-shaped protrusion, the tooth-shaped protrusion includes a friction surface and a blocking surface, the friction surface is tilted toward the rotation direction of the rotating shaft, and the friction surface of the tooth-shaped protrusion on the first holding member is tilted in a direction opposite to the direction in which the friction surface of the tooth-shaped protrusion on the first holding member is tilted.

In some embodiments, the friction faces include a first friction face and a second friction face, and the blocking face includes a first blocking face and a second blocking face; the first friction surface and the first blocking surface are either flat surfaces or cambered surfaces; when the first friction surface is a plane, the first blocking surface is also a plane; when the first friction surface is an arc surface, the first blocking surface is also an arc surface, the arc surface of the first blocking surface is the same as the arc surface of the first friction surface, and the direction of the arc surface is opposite.

In some embodiments, the second friction surface and the second blocking surface are either a plane or an arc; when the second friction surface is a plane, the second blocking surface is also a plane; when the second friction surface is an arc surface, the second blocking surface is also an arc surface, the radians of the second friction surface and the second blocking surface are the same, and the directions of the arc surfaces are opposite.

In some embodiments, the housing has a main cavity and at least one auxiliary cavity at an end of the main cavity, the flexible display screen is disposed in the main cavity, the retaining device is disposed in the auxiliary cavity, and the rotating shaft penetrates through the main cavity and the auxiliary cavity and is fixedly connected to the flexible display screen and the retaining device.

In some embodiments, the holding device further comprises a base, the base is arranged on one side of the auxiliary cavity close to the main cavity, and an elastic piece is arranged between the base and the inner wall of the auxiliary cavity; any holding piece in the holding device is fixedly arranged on the base.

In some embodiments, the array of springs is disposed on one side of the base, the springs comprising springs.

In some embodiments, a sliding groove is formed in the base, a sliding rod is fixedly arranged on the periphery of another holder in the holder, a pulley is arranged at one end of the sliding rod, the pulley is in sliding fit with the sliding groove, and the other end of the sliding rod extends out of the shell to form a pressing portion.

In some embodiments, the auxiliary cavities are disposed at both ends of the housing, the holding devices are disposed in the auxiliary cavities, and the holding devices in the two auxiliary cavities are symmetrically disposed.

Compared with the prior art, the display device provided by the invention has the beneficial effects that: through set up holding device at the both ends of flexible display screen, the motion of rethread control among the holding device is in order to display panel is restricted or is relieved the restriction, prevents that flexible display screen from rolling up or rolling in the in-process backward flow, has greatly protected flexible display screen to avoid receiving external force and has harmd.

Drawings

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

Fig. 2 is a schematic structural diagram of a first holding member in a display device according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a first tooth-like protrusion in a display device according to an embodiment of the invention.

Fig. 4 is a second structural diagram of a display device according to an embodiment of the invention.

Fig. 5 is a schematic diagram of a partial enlarged structure of a rotating shaft in a display device according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a pressing portion in a display device according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a base in a display device according to an embodiment of the present invention.

Fig. 8(a) to 8(c) are schematic structural views of an elastic member in a display device according to an embodiment of the present invention.

Fig. 9 is a schematic view of a first structure of a housing in a display device according to an embodiment of the invention.

Fig. 10 is a second structural diagram of a housing in a display device according to an embodiment of the invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The present invention provides a display device, and particularly, refer to fig. 1 to 10.

Generally, the curled OLED display module consists of a winding drum and a flexible display screen, wherein the flexible display screen can play images, a winding shaft is arranged in the winding drum, one end of the flexible screen is connected with the winding shaft, and the flexible screen can be wound in the winding drum. The first reel is used for realizing the rolling and the unfolding of the flexible screen, and the square accommodating body is used for accommodating the rolled flexible screen. The rigidity of the anti-curling strip on the second reel is utilized to fix the unfolded flexible screen, a certain anti-curling effect can be achieved, but the backflow and locking in the process of rolling out or rolling in the screen cannot be prevented. Accordingly, the present invention provides a display device to solve the above problems.

Fig. 1 is a schematic view of a first structure of a display device according to an embodiment of the present invention. The present invention provides a display device, including: a housing 4; a flexible display 3 rollably housed within the housing 4; the rotating shaft 1 is arranged in the shell 4 to support the flexible display screen 3 to be curled and unfolded; the holding device is arranged in the shell 4 and is linked with the rotating shaft 1 to limit the flexible display screen 3 to move towards a non-target direction; the holding device comprises a first holding component 2 at least arranged at one end of the rotating shaft 1, the first holding component 2 comprises a first holding piece 21 and a second holding piece, the first holding piece 21 and the second holding piece are oppositely arranged, a braking structure is arranged between the first holding piece 21 and the second holding piece, and the first holding piece 21 and the second holding piece can move towards the opposite direction to form braking or move towards the opposite direction to contact the braking.

The linkage represents a plurality of related things, when one moves or changes, the other moves or changes, namely joint action; the linkage may be a direct-connected linkage or an indirect-connected linkage.

The non-target direction is a direction different from the curling direction or the unfolding direction of the flexible display screen 3 in this embodiment, and is used for better fixing or ensuring that the flexible display screen 3 moves towards the target direction;

the braking structure means a structure blocking other components associated therewith, and in this embodiment, the first holder 21 and the second holder each have the braking structure, the braking structure of the first holder 21 blocks the movement of the second holder, and the braking structure of the second holder blocks the movement of the first holder 21.

It should be noted that the housing 4 includes at least two cavities; the flexible display 3 is rollably received in one of the cavities of the housing 4, the flexible display 3 is movable from the first position of the housing 4 to the second position outside the housing 4 in the housing 4, so that the position of the flexible display 3 exposed outside the housing 4 is changed, i.e. the flexible display 3 extends out of the housing 4, the flexible display 3 and the holding means are arranged in different cavities inside the housing 4, so that the flexible display 3 can be held somewhere outside the housing 4 during the rolling-out or rolling-in process of the flexible display 3 into the housing 4, and when the area of the flexible display 3 exposed outside the housing 4 is different, the length of the flexible display 3 extending out of the housing 4 is different, the position of the flexible display screen 3 outside the housing 4 is also different, and here, the second area is larger than the first area, that is, when the flexible display screen 3 is in the second position, the length of the flexible display screen 3 extending out of the housing 4 is larger than the length of the flexible display screen 3 extending out of the housing 4 when the flexible display screen 3 is in the first position.

Referring to fig. 1, the flexible display screen 3 and the first holding assembly 2 are respectively disposed in the main cavity 41 and the auxiliary cavity 42 of the housing 4 along the second direction Y, the rotating shaft 1 penetrates through the main cavity 41 and the auxiliary cavity 42 through the first through hole of the housing 4 to communicate the flexible display screen 3 and the holding device, that is, the main cavity 41 and the auxiliary cavity 42 are communicated through the first through hole 44, and the rotating shaft 1 connects the first holding assembly 2 and the flexible display screen 3 through the first through hole 44 in the housing 4. The flexible display screen 3 is a rolling flexible display screen and can move in and out of the main cavity 41 of the shell 4 along the rotating shaft 1 in a telescopic manner; the width of the flexible display screen 3 is the length of the flexible display screen 3 along the second direction Y, and the width of the flexible display screen 3 is smaller than the length of the main cavity 41 along the second direction Y, so that the flexible display screen 3 can be conveniently stretched in the main cavity 41; the length of the flexible display screen 3 is the length of the flexible display screen 3 along the first direction X when the flexible display screen 3 is unfolded outside the housing 4, and the length of the flexible display screen 3 is greater than the circumference of the rotating shaft 1, so that the flexible display screen 3 can be rolled and a user can watch the flexible display screen conveniently. Further, the holding device comprises the first holding member 2 movably mounted to the housing 4, the first holding member 2 blocking the flexible display 3 from moving towards the first position when the flexible display 3 is in the second position.

It is understood that the holding device comprises a first holding component 2 and a second holding component, the first holding component 2 and the second holding component are symmetrically arranged along the center line of the first direction X relative to the main cavity 41, wherein the first holding component 2 is arranged in the auxiliary cavity 42, part of the parts of the first holding component 2 can move relative to the rotating shaft 1, when the flexible display 3 is in the second position, i.e. the flexible display 3 extends out of the housing 4, the first holding component 2 blocks the flexible display 3 from moving towards the first position, i.e. the first holding component 2 blocks the flexible display 3 from retracting towards the housing 4.

Further, the first holding assembly 2 comprises a first holding member 21 and a second holding member 22, the first holding member 21 is movably mounted to the housing 4, the second holding member 22 is connected to the flexible display 3 to rotate under the driving of the flexible display 3, and when the flexible display 3 is in the second position, the first holding member 21 blocks the second holding member 22 to prevent the flexible display 3 from moving towards the first position.

It is understood that the holding device comprises a first holding assembly 2 and a second holding assembly, the moving direction of the first holding member 21 is opposite to the moving direction of the second holding member 22, one of the first holding member 21 and the second holding member 22 rotates in a clockwise direction, and the other of the first holding member 21 and the second holding member 22 rotates in a counterclockwise direction; the first retaining member 21 is movable relative to the housing 4, the first retaining member 21 is connected to the flexible display 3 to rotate under the driving of the flexible display 3, that is, the first retaining member 21 can rotate relative to the housing 4 and can rotate in one direction relative to the rotating shaft 1, and the second retaining member 22 is prevented from rotating; when the flexible display screen 3 is in the second position, the second retaining member 22 blocks the first retaining member 21 to prevent the flexible display screen 3 from moving toward the first position, that is, when the area of the flexible display screen 3 extending out of the housing 4 is equal to the second area, the second retaining member 22 blocks the first retaining member 21 to prevent the flexible display screen 3 from flowing back into the cavity of the housing 4.

Further, when the flexible display screen 3 is in the first position, the first holder 21 abuts the second holder 22 to allow the flexible display screen 3 to move from the first position toward the second position.

It can be understood that, when the flexible display 3 is in the first position, the first retaining member 21 and the second retaining member 22 are abutted against each other and can slide in one direction relative to the rotating shaft 1, that is, the first retaining member 21 can prevent the flexible display 3 from flowing back to the outside of the housing 4.

Here, the abutment means that two objects in contact with each other are in contact with each other and a certain reaction force is present, that is, in this case, the first holder 21 and the second holder 22 are in contact with each other and a certain reaction force is present.

Further, the braking structure is a tooth-shaped protrusion continuously arranged on the first holding member 21 and the second holding member 22, and the tooth-shaped protrusion on the first holding member 21 is engaged with the tooth-shaped protrusion on the second holding member 22.

Specifically, the first holding member 21 includes a plurality of first tooth-like projections each including a first friction surface 2111 and a first blocking surface 2112, the second holding member 22 includes a second tooth-like projection including a second friction surface 2211 and a second blocking surface 2212; wherein, when the flexible display screen 3 is in the first position, the first friction face 2111 abuts the second tooth-like projection to allow the flexible display screen 3 to move from the first position toward the second position; when the flexible display screen 3 is in the second position, the first blocking surface 2112 blocks the second tooth-like protrusion to prevent the flexible display screen 3 from moving from the second position toward the first position.

Further, the tooth-shaped protrusion is in the shape of a skewed tooth, the tooth-shaped protrusion includes a friction surface and a blocking surface, the friction surface is tilted toward the rotation direction of the rotating shaft, and the friction surface of the tooth-shaped protrusion on the first holding member 21 is tilted in the opposite direction to the friction surface of the tooth-shaped protrusion on the second holding member.

Further, the tooth-like projections on the first holding member 21 include a first friction surface 2111 and a first blocking surface 2112, and the tooth-like projections on the second holding member include a second friction surface 2211 and a second blocking surface 2212. The first friction surface 2111 and the first blocking surface 2112 are either flat or arc surfaces; when the first friction surface 2111 is a flat surface, the first blocking surface 2112 is also a flat surface; when the first friction surface 2111 is an arc surface, the first blocking surface 2112 is also an arc surface, the arc surface of the first blocking surface 2112 has the same radian as the first friction surface 2111, and the direction of the arc surface is opposite; the second friction surface 2211 and the second blocking surface 2212 are also any one of a plane or a cambered surface; when the second friction surface 2211 is a plane, the second blocking surface 2212 is also a plane; when the second friction surface 2211 is an arc surface, the second blocking surface 2212 is also an arc surface, the arcs of the second friction surface 2211 and the second blocking surface 2212 are the same, and the directions of the arc surfaces are opposite.

It is understood that the first retaining member 21 includes a plurality of first tooth-like protrusions, each of the first tooth-like protrusions includes the first friction surface 2111 and the first blocking surface 2112, i.e., a first inclined surface and a second inclined surface, the plurality of first tooth-like protrusions are disposed on the first end surface 211 side of the first retaining member 21, the first inclined surface intersects with the second inclined surface, and the first inclined surface and the second inclined surface are one of a plane and an arc surface; fig. 2 is a schematic structural diagram of a first holding member in the display device according to the embodiment of the present invention. One end of the first retaining member 21 is a plane, the other end of the first retaining member includes a plurality of first tooth-like protrusions, each first tooth-like protrusion includes two inclined surfaces, a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface are located in different planes, the first inclined surface and the second inclined surface intersect on the same straight line, an included angle between one end of the first inclined surface and the first direction X is a first included angle α 1, an included angle between one end of the second inclined surface and the first direction X is a second included angle α 2, an included angle between 0 ° < α 1 < 90 °, and an included angle between 0 ° < α 2 < 90 °, which is shown in fig. 3 in detail; the two adjacent first tooth-shaped protrusions are intersected with the second inclined surface of the next first tooth-shaped protrusion on the same straight line through the first inclined surface. It should be noted that, in an embodiment, a plurality of the first tooth-like protrusions form a closed ring-like structure, which is shown in detail in fig. 2; in another embodiment, a plurality of the first tooth-like protrusions form a non-closed arc-shaped structure, that is, a ring-shaped structure with a gap, and at least comprises one first tooth-like protrusion. The first blocking surface 2112 is mainly used for blocking the movement of the second retaining member 22, and the second retaining member 22 comprises a second toothed protrusion; when the flexible display screen 3 is in the first position, the first friction surface 2111 abuts against the second toothed protrusion, that is, when the area of the flexible display screen 3 extending out of the housing 4 is equal to the first area, the first friction surface 2111 and the second toothed protrusion are in contact with each other and have a certain reaction force; when the flexible display screen 3 is located at the second position, the first blocking surface 2112 blocks the second toothed protrusion to prevent the flexible display screen 3 from moving towards the first position, and when the area of the flexible display screen 3 extending out of the housing 4 is equal to the second area, the first blocking surface 2112 blocks the second toothed protrusion to prevent the flexible display screen 3 from flowing back into the cavity of the housing 4.

Further, the second retaining member 22 comprises a plurality of second tooth-shaped protrusions, each of the second tooth-shaped protrusions comprises a second friction surface 2211 and a second blocking surface 2212, i.e. a third inclined surface and a fourth inclined surface, the third inclined surface intersects with the fourth inclined surface, the second friction surface 2211 is arranged relative to the first friction surface 2111, the first blocking surface 2112 is arranged relative to the second blocking surface 2212, the second retaining portion is a second tooth-shaped protrusion, and the second friction surface and the first blocking surface are both the flat surface or one of the arc surfaces; wherein, when the flexible display screen 3 is in the first position, the first friction surface 2111 abuts the second friction surface 2211 to allow the flexible display screen 3 to move from the first position toward the second position; when the flexible display screen 3 is in the second position, the first blocking surface 2112 blocks the second blocking surface 2212 to prevent the flexible display screen 3 from moving towards the first position.

It is understood that, similarly, the second holding member 22 comprises a plurality of second tooth-shaped protrusions, each of which comprises a second friction surface 2211 and a second blocking surface 2212, wherein, when the area of the flexible display screen 3 extending out of the housing 4 is equal to the first area, the first friction surface 2111 and the second tooth-shaped protrusions contact each other and a certain reaction force exists; when the flexible display screen 3 is located at the second position, the first blocking surface 2112 blocks the second toothed protrusion to prevent the flexible display screen 3 from moving towards the first position, and when the area of the flexible display screen 3 extending out of the housing 4 is equal to the second area, the first blocking surface 2112 blocks the second toothed protrusion to prevent the flexible display screen 3 from flowing back into the cavity of the housing 4. In one embodiment, a plurality of the second tooth-like projections form a closed ring-like structure, as shown in detail in fig. 4; in another embodiment, a plurality of the second tooth-like protrusions form a non-closed arc-shaped structure, i.e. a ring-shaped structure with a gap, and at least one second tooth-like protrusion is included.

Further, the first blocking surface 2112 of each first tooth-shaped protrusion is connected between the first friction surface 2111 and the first friction surface 2111 of the adjacent first tooth-shaped protrusion, the first friction surface 2111 is inclined with respect to a plane in which the rotation direction of the first retaining member 21 is located, and an included angle between the first blocking surface 2112 and the first friction surface 2111 of the adjacent first tooth-shaped protrusion is smaller than or equal to 90 °.

It can be understood that the first blocking surface 2112 of each first tooth-shaped protrusion is connected between two adjacent first friction surfaces 2111, a certain angle is formed between the first friction surfaces 2111 and a plane corresponding to the rotation direction of the first retaining member 21, and an included angle between the first blocking surface 2112 and the first friction surface 2111 of the adjacent first tooth-shaped protrusion is smaller than or equal to 90 °, so that the first retaining member 21 provides the largest resistance for the second retaining member 22, and the second retaining member 22 is prevented from flowing back into the cavity of the housing 4, which can be similar to the operating principle of a ratchet wheel, and the second retaining member 22 can only rotate in one direction, and cannot move in the opposite direction.

Further, the second holding member 22 is movably mounted to the housing 4 to be close to or far from the first holding member 21 to place the first holding assembly 2 in a first state or a second state, when the first holding assembly 2 is in the first state and the flexible display screen 3 is in the second position, the second holding member 22 blocks the first holding member 21 to prevent the flexible display screen 3 from moving from the second position toward the first position, when the first holding assembly is in the first state and the flexible display screen 3 is in the first position, the second holding member 22 abuts the first holding member 21 to allow the flexible display screen 3 to move from the first position toward the second position, when the first holding assembly 2 is in the second state, the second holding member 22 does not block the first holding member 21 to allow the flexible display screen 3 to move in the first position and the second position Between the second positions.

Further, the casing 4 has a main cavity 41 and at least one auxiliary cavity 42 located at an end of the main cavity 41, the flexible display screen 3 is disposed in the main cavity 41, the holding device is disposed in the auxiliary cavity 42, and the rotating shaft 1 penetrates through the main cavity 41 and the auxiliary cavity 42 and is fixedly connected to the flexible display screen 3 and the holding device.

It will be appreciated that the housing 4 comprises at least two different cavities, namely the main cavity 41 and the auxiliary cavity 42, the shaft 1 is mounted in the cavity of the housing 4 through the first through hole 44 in the housing 4, and the shaft 1 is movable relative to the housing 4, the first retaining member 21 is fixedly mounted on the shaft 1, and the second retaining member 22 is mounted on the cavity wall of the cavity, i.e. when the first retaining member 21 can rotate following the shaft 1, and the second retaining member 22 is mounted on the housing 4 and is stationary.

Further, the first holder 21 and the second holder 22 are disposed opposite to each other, and the rotating shaft 1 passes through the first holder 21 and the second holder 22.

It is understood that a side of the first holder 21 including the first blocking surface 2112 and a side of the second holder 22 including the second blocking surface 2212 are oppositely disposed, when the first holder 21 contacts the second holder 22, one of the first holder 21 or the second holder 22 is blocked from rotating in a certain direction, and when the first holder 21 and the second holder 22 are separated, the first holder 21 can freely rotate along with the rotating shaft 1; the rotating shaft 1 penetrates through the first retaining member 21 and the second retaining member 22, and it should be noted that when the second retaining member 22 is fixed on the housing 4, the diameter of the hollow circle in the middle of the second retaining member 22 is larger than that of the rotating shaft 1, and the diameter of the hollow circle in the middle of the first retaining member 21 is equal to that of the rotating shaft 1.

Further, the holding device further comprises a base 24, the base 24 is disposed on one side of the auxiliary cavity 42 close to the main cavity 41, and an elastic member 25 is disposed between the base 24 and the inner wall of the auxiliary cavity 42; any one of the holders is fixedly disposed on the base 24.

Further, the elastic member 25 includes a spring (see fig. 8(a)) and an elastic material (see fig. 8 (b)).

Furthermore, a sliding groove 241 is disposed on the base 24, a sliding rod is fixedly disposed on the periphery of the other holder in the holding device, a pulley 231 is disposed at one end of the sliding rod, the pulley 231 is in sliding fit with the sliding groove 241, and the other end of the sliding rod extends out of the housing 4 to form the pressing portion 23.

Specifically, the pressing portion 23 is connected to the second holder 22, and the pressing portion 23 is movably mounted to the housing 4 to drive the second holder 22 away from or close to the first holder 21.

The length of the pressing portion 23 in the direction parallel to the rotating shaft 1 is greater than the length of the auxiliary cavity 42 in the direction parallel to the rotating shaft 1, so that the pressing portion 23 extends out of the auxiliary cavity 42, and the contact and separation state of the first retaining member 21 and the second retaining member 22 is controlled by the pressing portion 23.

It is understood that the display device further includes a pressing portion 23, the pressing portion 23 is connected to one of the first retaining member 21 and the second retaining member 22, the pressing portion 23 is movably mounted to the housing 4 to drive the first retaining member 21 to approach or separate from the second retaining member 22, the pressing portion 23 is mounted in the housing 4 and can rotate relative to the housing 4 to enable the first retaining member 21 and the second retaining member 22 to be in a contact state or a separated state, and when the flexible display screen 3 is in the second position, the first retaining member 21 is in contact with the second retaining member 22.

Further, the display device further comprises an elastic member 25, one end of the elastic member 25 abuts against the pressing portion 23, the other end of the elastic member 25 abuts against the cavity wall of the cavity, and when the second retaining member 22 moves away from or approaches the first retaining member 21, the elastic member 25 has elastic potential energy for driving the first retaining member 21 to move towards or away from the second retaining member 22.

Further, the first pressing member includes a base 24 and a pressing portion 23 connected to the base 24, the base 24 is fixed to the second holder 22, one end of the elastic member 25 abuts against the base 24, the housing 4 is provided with a slide hole communicating with the cavity, and the pressing portion 23 is slidably mounted in the slide hole.

Further, referring to fig. 10, in an embodiment, the two ends of the housing 4 are provided with the auxiliary cavities (421, 422), the auxiliary cavities (421, 422) are provided with the retaining devices, and the retaining devices in the two auxiliary cavities (421, 422) are symmetrically arranged.

In particular, the holding device further comprises a second holding assembly movably mounted to the housing 4, the second holding assembly having a third state and a fourth state; when the second holding assembly is in the third state, such that the second holding assembly blocks the flexible display 3 to prevent the flexible display 3 from moving from the first position toward the second position and allows the flexible display 3 to move from the second position toward the first position, the first holding assembly is in the second state, and when the first holding assembly is in the first state, the second holding assembly is in the fourth state, such that the second holding assembly does not block the flexible display 3 to allow the flexible display 3 to move between the second position and the first position.

Further, the second holding assembly includes a third holding member movably mounted to the housing 4, the third holding member being connected to the flexible display screen 3 to move under the driving of the flexible display screen 3, and a fourth holding member movably mounted to the housing 4 to be close to or far from the third holding member so that the second holding assembly is in a third state or a fourth state.

It is understood that when the display device includes three cavities, the second holding assembly and the first holding assembly 2 are symmetrically arranged in the cavities at both ends of the display device with respect to the flexible display screen 3, that is, the flexible display screen is arranged in the main cavity 41, the first holding assembly is arranged in the first auxiliary cavity 41, the second holding assembly is arranged in the second auxiliary cavity 422, and the first auxiliary cavity 41 and the second auxiliary cavity 422 are symmetrically arranged with respect to the main cavity 41; the first holding assembly 2 is configured to control the flexible display screen 3 to move and stop counterclockwise around the first direction Y, and the second holding assembly is configured to control the flexible display screen 3 to move and stop clockwise around the first direction Y, that is, when the rotating shaft 1 moves counterclockwise around the first direction Y, the flexible display screen 3 moves from the first position to the second position, and if the rotating shaft 1 is to stop rotating, the first holding member 21 can be moved towards the flexible display screen 3 along the first direction Y to make the first holding member 21 engage with the second holding member 22, so that the rotating shaft 1 and the second holding member 22 stop rotating; when the rotating shaft 1 moves clockwise around the first direction Y, the flexible display screen 3 moves from the second position to the first position, and in order to stop the rotating shaft 1, the third retaining member and the fourth retaining member can be attached by moving the third retaining member away from the flexible display screen 3 along the first direction Y, so that the rotating shaft 1 and the fourth retaining member stop moving. In other words, the first holding assembly is used for controlling the flexible display 3 to extend out of the housing 4, and the second holding assembly is used for controlling the flexible display 3 to roll the flexible display 3 into the housing 4.

Further, the third holding member includes a plurality of second holding portions, each of the second holding portions includes a third friction surface and a third blocking surface, and the fourth holding member includes a fourth friction surface; wherein, when the flexible display screen 3 is in the first position and the second retaining assembly is in the third state, the third blocking surface blocks the fourth friction surface to prevent movement of the flexible display screen 3 toward the second position, and when the flexible display screen 3 is in the second position and the second retaining assembly is in the third state, the third friction surface abuts the fourth friction surface to allow movement of the flexible display screen 3 toward the first position.

Further, the display device further includes a second pressing portion connected to the fourth holder, the structure of the second pressing portion is the same as that of the pressing portion 23, and the second pressing portion is movably mounted on the housing 4 to drive the fourth holder to approach or separate from the first holder 21.

Further, the display device further comprises a second elastic member, one end of the second elastic member abuts against the second pressing portion, the other end of the second elastic member abuts against the housing 4, and when the fourth retaining member is far away from or close to the third retaining member, the second elastic member has elastic potential energy for driving the fourth retaining member to be close to or far away from the third retaining member; the second elastic member and the elastic member 25 are arranged in the same manner, that is, the second elastic member and the elastic member 25 have the same shape, size, structure and material.

Further, the fourth holding member comprises a plurality of fourth friction surfaces, each of the fourth friction surfaces comprises a second sliding surface and a second blocking surface, wherein when the flexible display screen 3 is in the second position, the third friction surface abuts against the second sliding surface to allow the flexible display screen 3 to move from the second position to the first position, and when the flexible display screen 3 is in the first position, the third blocking surface blocks the second blocking surface to prevent the flexible display screen 3 from moving to the second position.

Further, in an embodiment, referring to fig. 9, the cavity includes a main cavity 41 and an auxiliary cavity 42 which are adjacent to each other, the slide hole communicates with the main cavity 41, a first through hole 44 which communicates the main cavity 41 and the auxiliary cavity 42 is provided on a cavity wall of the main cavity 41, the rotating shaft 1 is movably installed in the first through hole 44, the first retaining member 21, the second retaining member 22, the elastic member 25 and the base 24 are installed in the main cavity 41, the other end of the elastic member 25 is used for abutting against the cavity wall of the main cavity 41, and the flexible display screen 3 is installed in the auxiliary cavity 42.

It is understood that the first through hole 44 is a hole communicating the main cavity 41 and the auxiliary cavity 42 of the housing 4, the first through hole 44 is used for inserting the rotating shaft 1, and the diameter of the first through hole 44 is greater than or equal to the diameter of the rotating shaft 1, so that the rotating shaft 1 can rotate freely relative to the housing 4.

Similarly, the second through hole 45 has the same function as the first through hole 44, except that the second through hole 45 communicates the main cavity 42 with the second auxiliary cavity 422, see fig. 10.

It will be appreciated that the retaining means is provided on the shaft 1 near one of the end faces of the shaft 1, the primary purpose of the retaining means being to control the shaft 1 in two states, a first state in which the shaft 1 is in rotation and a second state in which the shaft 1 is in rest. The principle of the holding device controlling the state of the spindle 1 is essentially that, since the holding device comprises two winding disks, the first holding member 21 and the second holding member 22, one end of each of the first retaining member 21 and the second retaining member 22 is provided with a tooth-shaped protrusion, and one end of the first holding member 21 including the tooth-like projections is disposed opposite to one end of the second holding member 22 including the tooth-like projections, since the hollow circle in the middle of one of the first holder 21 and the second holder 22 is just fitted to the rotary shaft 1, the diameter of the hollow circle in the middle of the other rolling disk is larger than that of the rotating shaft 1, when one end of the first holding piece 21 containing the tooth-shaped protrusion is contacted with one end of the second holding piece 22 containing the tooth-shaped protrusion, the rotating shaft 1 stops rotating, namely, the rotating shaft 1 is in a static state; when the end of the second holding member 22 including the tooth-like projection is separated from the end of the second holding member 22 including the tooth-like projection (the distance between the end of the first holding member 21 including the tooth-like projection and the end of the second holding member 22 including the tooth-like projection is greater than the sum of the lengths of the orthogonal projections of the first friction surface 2111 and the second friction surface 2211 in the first direction Y), the rotation state of the rotating shaft 1 is maintained, that is, the rotating shaft 1 is in a rotation state.

Wherein the first direction Y is a vertical direction, i.e. a direction perpendicular to the plane of the first plane 212; the second direction X is a horizontal direction, i.e. a direction parallel to the plane of the first plane 212 and perpendicular to the first direction Y; the third direction Z is a direction perpendicular to both the first direction Y and the second direction X.

Further, referring to fig. 2 and 4, fig. 2 is a schematic structural diagram of a first holding member in a display device according to an embodiment of the present invention. Fig. 4 is a second structural diagram of a display device according to an embodiment of the invention. One end of the first holder 21 provided with the tooth-shaped protrusions is a second end surface 221, and the second end surface 221 includes: the first friction surface 2111 and the first blocking surface 2112, and the other end of the first retaining member 21 is a first plane 212; the end of the second retaining member 22 provided with the tooth-like projections includes: the second friction surface 2211 and the second blocking surface 2212, one end of the second holder 22 is a second plane 222, and the other end of the second holder 22 is a second end 221; the second plane 222 is parallel to the first plane 212, and the second plane 222 is disposed opposite to the second end surface 221.

Further, the included angle formed by the first friction surface 2111 and the first plane 212 of the first holding member 21 is a first included angle α 1, the included angle formed by the first blocking surface 2112 and the first plane 212 of the first holding member 21 is a second included angle α 2, the included angle formed by the second friction surface 2211 and the second plane 222 of the second holding member 22 is a third included angle α 3, and the included angle formed by the second blocking surface 2212 and the second plane 222 of the second holding member 22 is a fourth included angle α 4; the first included angle α 1 is greater than or less than the second included angle α 2, and the third included angle α 3 is greater than or less than the fourth included angle α 4.

Further, the first included angle α 1 and the third included angle α 3 may be an obtuse angle, a right angle or an acute angle, preferably a right angle and an acute angle, and when the first included angle α 1 is a right angle, the first retaining member 21 and the second retaining member 22 are simple and convenient to manufacture; when the first included angle α 1 is an acute angle, the degree of fit between the first retaining member 21 and the second retaining member 22 is the highest, and the braking capability is the strongest; when the first included angle α 1 is an obtuse angle, the braking capability of the first holding device 1 is weaker than that when the first included angle α 1 is a right angle or an acute angle.

Further, in order to ensure the best fit between the first holding member 21 and the second holding member 22, it is preferable that the first included angle α 1 is equal to the third included angle α 3, and the second included angle α 2 is equal to or greater than the fourth included angle α 4.

It is understood that the end of the first holding member 21 where the tooth-like projections are provided includes: the first friction surface 2111 and the first blocking surface 2112, and the first plane 212 is parallel to the second plane 222, an angle between the first friction surface 2111 and the first plane 212, and a length of an orthographic projection of the first friction surface 2111 along a direction perpendicular to the first plane 212 are different from an angle between the first blocking surface 2112 and the first plane 212, and a length of an orthographic projection of the first blocking surface 2112 along a direction perpendicular to the first plane 212; similarly, the angle between the second friction surface 2211 and the first plane 212, and the length of the orthographic projection of the second friction surface 2211 along the direction perpendicular to the first plane 212 are different from the angle between the second blocking surface 2212 and the first plane 212, and the length of the orthographic projection of the second blocking surface 2212 along the direction perpendicular to the first plane 212. The first included angle α 1 is greater than or less than the second included angle α 2, and the third included angle α 3 is greater than or less than the fourth included angle α 4.

Further, a direction perpendicular to the first plane 212 is a first direction Y, a length of the first friction surface 2111 projected forward along the first direction Y is a first length L1, a length of the second friction surface 2211 projected forward along the first direction Y is a second length L2, and the first length L1 is equal to or greater than the second length L2.

It is to be understood that in the first holding member 21, a first friction surface 2111 and a first blocking surface 2112 constitute a first tooth-like projection, and the length of the orthographic projection of the first friction surface 2111 in the first direction Y is a first length L1, i.e., the height of the first tooth-like projection; similarly, in the second holder 22, one of the second friction surfaces 2211 and one of the second blocking surfaces 2212 constitute a second toothed projection, and the length of the orthogonal projection of the second friction surface 2211 in the first direction Y is L2, that is, the height of the second toothed projection; when the first length L1 is equal to or greater than the second length L2 (that is, the height of the first tooth-like protrusion is equal to or greater than the height of the second tooth-like protrusion), as long as the first retaining member 21 contacts the second retaining member 22, the rotating disk will be stopped by the braking force of the stationary disk, that is, the second retaining member 22 will be stopped by the braking force of the first retaining member 21, so as to achieve the purpose of controlling the rotating shaft 1.

Further, a direction parallel to the plane of the first plane 212 and perpendicular to the first direction Y is a second direction X, a length of an orthographic projection of the first blocking surface 2112 along the second direction X is a third length L3, a length of an orthographic projection of the second blocking surface 2212 along the second direction X is a fourth length L4, and the third length L3 is equal to the fourth length L4.

It is understood that the orthographic projection length of the first blocking surface 2112 along the second direction X is a third length L3, the orthographic projection length of the second blocking surface 2212 along the second direction X is a fourth length L4, and the third length L3 is equal to the fourth length L4, i.e. the width of the first blocking surface 2112 along the second direction X is equal to the width of the second blocking surface 2212 along the second direction X, in other words, the length of the first tooth-shaped protrusion along the second direction X is equal to the length of the second tooth-shaped protrusion along the second direction X.

Further, the first friction surface 2111, the first blocking surface 2112, the second friction surface 2211 and the second blocking surface 2212 may be flat surfaces or arc surfaces.

It is understood that when the first friction surface 2111 and the second friction surface 2211 are flat, the first blocking surface 2112 and the second blocking surface 2212 are also flat; when the first friction surface 2111 and the second friction surface 2211 are arc surfaces, the first blocking surface 2112 and the second blocking surface 2212 are arc surfaces complementary to the first friction surface 2111 and the second friction surface 2211, respectively, that is, when the first friction surface 2111 and the second friction surface 2211 are arc surfaces which are convex, the first blocking surface 2112 and the second blocking surface 2212 are concave arc surfaces, otherwise, the first blocking surface 2112 and the second blocking surface 2212 are convex arc surfaces.

Further, the centers of the first holder 21 and the second holder 22 are provided with hollow circles, wherein the diameter of the hollow circle of the first holder 21 is equal to the diameter of the rotating shaft 1, and the diameter of the hollow circle of the second holder 22 is larger than the diameter of the rotating shaft 1.

It will be appreciated that the centers of the first and

second holders

21 and 22 are each provided with a hollow circle, when the diameter of the hollow circle of the first holder 21 is equal to the diameter of the rotating shaft 1, the diameter of the hollow circle of the second holder 22 is larger than the diameter of the rotating shaft 1, that is, at this time, the second holder 22 rotates along with the rotation shaft 1, the first holder 21 does not rotate along with the rotation shaft 1, when it is necessary to stop the rotation of the rotary shaft 1, the second holder 22 is moved, so that the second holder 22 is brought into contact with the first holder 21, the tooth-shaped projections on the second holding member 22 are controlled to stop rotating by the reaction force of the tooth-shaped projections on the stationary first holding member 21, and then the first holding member 21 drives the rotating shaft 1 to stop rotating together, so as to achieve the purpose of keeping the rotating shaft 1 in a static state.

Fig. 5 is a schematic diagram of a partial enlarged structure of a rotating shaft in a display device according to an embodiment of the present invention. In order to ensure that the second retaining member 22 moves together with the rotating shaft 1, the second retaining member 22 is connected with the rotating shaft 1 by a key 11, the key 11 can fix the second retaining member 22 in the second direction X, and further, since the second retaining member 22 needs to move up and down along the first direction Y to achieve contact and separation with the first retaining member 21, the two sides of the rotating shaft 1 close to the key 11 are also respectively provided with a slideway 12, and the slideway 12 ensures the movement of the second retaining member 22 along the first direction Y.

Further, since the first retaining member 21 is mainly used for braking the rotation of the second retaining member 22 and the rotating shaft 1, the first retaining member 21 may be a full circle ring, a half circle ring or a segment of a sector ring, and the sector ring includes at least one second tooth-shaped protrusion, that is, the sector ring can cooperate with the second retaining member 22, so that the rotation of the second retaining member 22 and the rotating shaft 1 can be stopped.

The fan ring is a so-called fan ring which cuts a part of the circular ring. The larger the radian of the fan ring is, the stronger the braking force of the fan ring on the second retaining member 22 is, and the smaller the radian of the fan ring is, the less material is required for the fan ring, so that the fan ring is simple and convenient to manufacture, and the cost is saved.

Further, in order to ensure the braking stability of the first holder 21 with respect to the second holder 22 and the rotating shaft 1, the first holder 21 is generally fixed to the housing 4 when the display device is manufactured, so as to sufficiently ensure the braking stability of the first holder 21.

Further, the holding device further includes: a base 24, and a resilient member 25.

Specifically, the base 24 is disposed on a side of the second holder 22 facing away from the first holder 21, the elastic member 25 is disposed on a side of the base 24 facing away from the first holder 21, and the pressing portion 23 is disposed on a side of the base 24 close to the first holder 21.

Further, a side of the base 24 close to the first holder 21 includes a sliding groove 241, an inner diameter of the sliding groove 241 is greater than or equal to an outer diameter of the base 24; a pulley 231 is disposed on one side of the pressing portion 23 close to the base 24, and the pressing portion 23 is connected to the sliding groove 241 of the base 24 through the pulley 231.

It is to be understood that, in order to facilitate the contact and separation of the second holder 22 and the first holder 21, the holder further provides the base 24, the pressing portion 23, and the elastic member 25 on the second holder 22, the base 24 is provided on the side of the second holder 22 facing away from the first holder 21, the elastic member 25 is provided on the side of the base 24 facing away from the first holder 21, and the pressing portion 23 is provided on the side of the base 24 adjacent to the first holder 21. The base 24 and the second retaining member 22 are fixedly connected or detachably connected, so that the base 24 and the second retaining member 22 can keep the same movement, in the process of rotating the second retaining member 22, the pressing portion 23 is pushed and pulled to separate or contact the second retaining member 22 from or with the first retaining member 21, since the elastic member 25 is arranged on the side of the base 24 away from the first retaining member 21, when the second retaining member 22 is pushed away, the elastic member 25 is pressed by the housing 4 to generate a reaction force when the elastic member 25 contacts and rebounds with the housing 4 due to the action force of pushing away the second retaining member 22, and the second retaining member 22 is pushed away to contact the first retaining member 21; when the force pushing the pressing portion 23 can make the first holder 21 and the second holder 22 not contact, and at the same time, the elastic member 25 does not contact the base 24 or the housing 4, the first holder 21 and the second holder 22 are separated, and the second holder 22 and the rotating shaft 1 are kept in a rotating state; further, a side of the base 24 close to the first holder 21 includes a sliding groove 241, an inner diameter of the sliding groove 241 is greater than or equal to an outer diameter of the base 24; a pulley 231 is disposed on one side of the pressing portion 23 close to the base 24, and the pressing portion 23 is connected to the sliding groove 241 of the base 24 through the pulley 231.

Further, since the sliding groove 241 is used for cooperating with the pressing portion 23, in order to avoid the pressing portion 23 from affecting the operation of the second holder 22, the inner diameter of the sliding groove 241 must be greater than or equal to the outer diameter of the second holder 22, and the sliding groove 241 is arranged such that the pressing portion 23 can move relative to the base 24, and the friction force between the pressing portion 23 and the base 24 can also be reduced.

Specifically, referring to fig. 6, a schematic structural diagram of a pressing portion in a display device according to an embodiment of the present invention is shown. The pressing portion 23 is shaped like a rectangular parallelepiped, a pulley 231 is disposed at a lower end of the pressing portion 23, that is, at an end of the pressing portion 23 close to the base 24, and a length of the pulley 231 along the second direction X is equal to a length of the sliding groove 241 along the second direction X, so as to ensure that the pulley 231 can stably move in the sliding groove 241 without being separated from the sliding groove 241.

Further, referring to fig. 7, a schematic structural diagram of a base in a display device according to an embodiment of the present invention is shown. The base 24 includes: the slide groove 241, the first edge 242, and the second edge 243, wherein the base 24 has a circular ring shape, the length of the first edge 242 in the second direction X is equal to the second radius R2 minus the first radius R1, the length of the second edge 243 in the second direction X is equal to the fourth radius R4 minus the third radius R3, the fourth radius R4 is an outer diameter of the base 24, the third radius R3 is an outer diameter of the slide groove 241, the second radius R2 is an inner diameter of the slide groove 241, and the first radius R1 is an inner diameter of the base 24.

Specifically, referring to fig. 8(a) to 8(c), schematic structural diagrams of the elastic member in the display device according to the embodiment of the present invention are shown. The elastic elements 25 are arranged on one side of the base in an array, and the structure of the elastic elements 25 comprises a spring, a cylinder or a cuboid. In an embodiment, the elastic member 25 may be a high-elasticity spring structure 25a, or may be a high-elasticity non-spring structure, that is, the shape of the elastic member 25 is not limited, and may be a coiled spring shape, or a rectangular parallelepiped shape 25c or a cylindrical shape 25b of elastic material, fig. 8(a) is an elastic member of the spring structure 25a, fig. 8(b) is an elastic member of the cylindrical shape 25b, and fig. 8(c) is an elastic member of the rectangular parallelepiped shape 25 c; as long as it is ensured that the second retaining member 22 can be rebounded when the elastic member 25 receives the reaction force of the housing 4.

Further, the display device further includes: a flexible display screen 3 and a housing 4; the flexible display screen 3 is arranged on the rotating shaft 1; the housing 4 comprises at least two cavities, and the flexible display screen 3 and the holding device are accommodated in the different cavities by the housing 4 through the rotating shaft 1.

It is understood that the display device further includes: a flexible display screen 3 and a housing 4; the flexible display screen 3 is arranged on the rotating shaft 1, the flexible display screen 3 is driven to be rolled out or rolled into one of the cavities of the shell 4 through the rotation of the rotating shaft 1, and the rotating shaft 1 can be controlled to keep a rotating state or a static state due to the arrangement of the retaining device.

Further, the flexible display 3 is rollably mounted to the spindle 1.

It can be understood that flexible display screen 3 is the curly form and installs pivot 1 is last, works as flexible display screen 3 is in during the first position, flexible display screen 3 curls and is located in pivot 1 the cavity of casing 4 works as flexible display screen 3 is in during the second position, flexible display screen 3's one end fixed connection be in pivot 1 is last, flexible display screen 3's the other end stretch out in outside the cavity of casing 4, be the display surface that expandes.

In an embodiment, referring to fig. 9, a first structural diagram of a housing in a display device according to an embodiment of the present invention is shown. The casing 4 includes two cavitys, main cavity 41 and auxiliary cavity 42, flexible display screen 3 with retaining device sets up respectively in the cavity of difference, promptly flexible display screen 3 sets up in the main cavity 41, retaining device sets up in auxiliary cavity 42, assist the both sides of cavity 42, one of them one side of auxiliary cavity 42 is used for fixing first holder 21, and the opposite side is used for elastic component 25 provides reaction force. It should be noted that, in this case, since the tooth-shaped protrusions on the first retaining member 21 and the second retaining member 22 in the retaining device only have tooth-shaped protrusions facing one direction, the retaining device can only brake the rotation of the rotating shaft 1 in one direction, that is, the retaining device can only roll the flexible display 3 into the auxiliary cavity 42 of the housing 4; when the flexible display screen 3 needs to be rolled out of the main cavity 41 of the housing 4, a user can manually pull the flexible display screen 3 to roll out the flexible display screen from the housing 4 under the condition that the first rolling turntable 21 is separated from the second holding member 22, so as to realize display.

In another embodiment, referring to fig. 10, a second structural diagram of a housing in a display device according to an embodiment of the present invention is shown. The shell 4 comprises three cavities, namely a main cavity 41, a first auxiliary cavity 421 and a second auxiliary cavity 422, wherein the first auxiliary cavity 421 and the second auxiliary cavity 422 are oppositely arranged; the flexible display screen 3 and the holding devices are respectively arranged in different cavities, and at this time, the flexible display screen 3 comprises two holding devices, namely a forward holding device and a reverse holding device, which are respectively arranged in the first auxiliary cavity 421 and the second auxiliary cavity 422, namely the flexible display screen 3 is arranged in the main cavity 41, the forward holding device is arranged in the first auxiliary cavity 421, and the reverse holding device is arranged in the second auxiliary cavity 422; one side of the first auxiliary cavity 421 is used for fixing the first retaining member 21, and the other side is used for providing a reaction force for the elastic member 25, and likewise, the second auxiliary cavity 422 has the same function relative to the reverse retaining device.

When the flexible display screen is in work, the flexible display screen 3 is extended and retracted through forward rotation or reverse rotation of the rotating shaft 1, namely when the rotating shaft 1 rotates forwards, the flexible display screen 3 rotates forwards along with the rotating shaft 1 and is rolled out of the shell 4, and the flexible display screen 3 is unfolded; when the rotating shaft 1 rotates reversely, the flexible display screen 3 rotates reversely along with the rotating shaft 1 and is rolled into the shell 4, and the flexible display screen 3 is retracted.

Further, the display device further includes: driving motor, driving motor with 1 electric connection in pivot, driving motor can realize the forward rotation and the antiport of pivot 1 work as when driving motor forward pivoted switch gets electric, driving motor drives pivot 1 begins the forward rotation, works as when driving motor antiport's switch gets electric, driving motor drives pivot 1 begins the antiport.

The display device provided by the embodiment of the present invention is described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A display device, characterized in that the display device comprises:

a housing;

a flexible display screen rollably housed within the housing;

2. The display device as claimed in claim 1, wherein the stopping structure is a tooth-shaped protrusion continuously disposed on the first holder and the second holder, and the tooth-shaped protrusion on the first holder is engaged with the tooth-shaped protrusion on the second holder.

3. The display device according to claim 2, wherein the tooth-like projection is in a helical tooth shape, the tooth-like projection includes a friction surface inclined toward a rotation direction of the rotation shaft, and a blocking surface, and a friction surface of the tooth-like projection on the first holding member is inclined in a direction opposite to an inclination direction of a friction surface of the tooth-like projection on the second holding member.

4. A display device as claimed in claim 3, characterised in that the friction surface comprises a first friction surface and a second friction surface and the blocking surface comprises a first blocking surface and a second blocking surface; the first friction surface and the first blocking surface are either flat surfaces or cambered surfaces; when the first friction surface is a plane, the first blocking surface is also a plane; when the first friction surface is an arc surface, the first blocking surface is also an arc surface, the radian of the first blocking surface is the same as that of the first friction surface, and the direction of the arc surface is opposite.

5. The display device according to claim 3, wherein the second friction surface and the second blocking surface are either a plane or a cambered surface; when the second friction surface is a plane, the second blocking surface is also a plane; when the second friction surface is an arc surface, the second blocking surface is also an arc surface, the radians of the second friction surface and the second blocking surface are the same, and the directions of the arc surfaces are opposite.

6. The display apparatus as claimed in claim 1, wherein the housing has a main cavity and at least one auxiliary cavity at an end of the main cavity, the flexible display screen is disposed in the main cavity, the retaining device is disposed in the auxiliary cavity, and the shaft penetrates through the main cavity and the auxiliary cavity and is fixedly connected to the flexible display screen and the retaining device.

7. The display device according to claim 6, wherein the holding device further comprises a base, the base is disposed on a side of the auxiliary cavity close to the main cavity, and an elastic member is disposed between the base and an inner wall of the auxiliary cavity; any holding piece in the holding device is fixedly arranged on the base.

8. The display device according to claim 7, wherein the array of elastic members is disposed on one side of the base, the elastic members comprising springs.

9. The display device according to claim 7, wherein a sliding slot is disposed on the base, a sliding rod is fixedly disposed on a periphery of another holder in the holder, a pulley is disposed at one end of the sliding rod, the pulley is slidably engaged with the sliding slot, and the other end of the sliding rod extends out of the housing to form a pressing portion.

10. The display device according to claim 7, wherein the auxiliary cavities are disposed at both ends of the housing, the holding devices are disposed in the auxiliary cavities, and the holding devices in the two auxiliary cavities are symmetrically disposed.