CN110544435A

CN110544435A - Display device and folding fan

Info

Publication number: CN110544435A
Application number: CN201910834160.9A
Authority: CN
Inventors: 霍晓迪; 南春香; 潘晓东; 曹丽丽; 胡志明; 袁亮
Original assignee: BOE Technology Group Co Ltd; Ordos Yuansheng Optoelectronics Co Ltd
Current assignee: BOE Technology Group Co Ltd; Ordos Yuansheng Optoelectronics Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2019-12-06
Anticipated expiration: 2039-09-04
Also published as: CN110544435B

Abstract

the embodiment of the application provides a display device and a folding fan. The display device includes: the flexible screen, the bending component and the bone piece; the flexible screen comprises a first flexible screen and a second flexible screen which are arranged at intervals in a back-to-back mode; the bone parts are at least two, and all the bone parts are arranged at intervals; the bending assembly comprises at least one bending unit, and two ends of each bending unit are fixedly connected with two adjacent bone parts respectively; one surface of the combination of the bending component and each bone piece is connected with the first flexible screen, the other surface of the combination of the bending component and each bone piece is connected with the second flexible screen, and the bending component has elasticity, so that the first flexible screen and the second flexible screen can relatively move along the bending direction in the bending or flattening process; the first flexible screen, the second flexible screen and the bending unit between two adjacent bone parts form a bending screen unit. The embodiment of the application realizes the folding of the double-sided flexible screen.

Description

display device and folding fan

Technical Field

The application relates to the technical field of display products, in particular to a display device and a folding fan.

background

At present, the development of a flexible screen is leap forward suddenly, application scenes are more and more, for example, the flexible screen is combined with a folding fan, namely the flexible screen is used as a fan surface of the folding fan, an obtained folding fan product not only has the air induction function of the traditional folding fan, but also has human fan interaction functions of displaying information, displaying patterns and the like, and the use experience of the folding fan product is enhanced.

in order to improve the bending degree of a fan face, the conventional flexible screen folding fan usually adopts a mode of thinning the fan face structure, namely a single-face flexible screen design is adopted to obtain a larger bending degree, so that the fan face structure of a double-face flexible screen structure is difficult to realize; in addition, in order to prevent the flexible screen from being broken, the conventional flexible screen folding fan mostly adopts a fixed shaft to wind, can not realize folding the same as that of the conventional folding fan, and is more difficult to realize repeated folding or multiple folding of the conventional folding fan.

disclosure of Invention

this application provides a display device and folding fan to the shortcoming of current mode for solve the two-sided flexible screen that prior art exists and be difficult to the technical problem of folding.

in a first aspect, an embodiment of the present application provides a display device, including: the flexible screen, the bending component and the bone piece;

the flexible screen comprises a first flexible screen and a second flexible screen which are arranged at intervals in a back-to-back mode;

The bone parts are at least two, and all the bone parts are arranged at intervals;

the bending assembly comprises at least one bending unit, and two ends of each bending unit are fixedly connected with two adjacent bone parts respectively; one surface of the combination of the bending component and each bone piece is connected with the first flexible screen, the other surface of the combination of the bending component and each bone piece is connected with the second flexible screen, and the bending component has elasticity, so that the first flexible screen and the second flexible screen can relatively move along the bending direction in the bending or flattening process;

the first flexible screen, the second flexible screen and the bending unit between two adjacent bone parts form a bending screen unit.

In a second aspect, an embodiment of the present application provides a folding fan, including: a sector, a fan rib and a fan nail assembly;

the sector comprises a first flexible screen, a second flexible screen, a third flexible screen and a bending component in the display device provided by the first aspect;

the fan ribs are bone members in a display device as provided in the first aspect above;

The fan rib includes: the first fan big rib, the second fan big rib and a plurality of fan small ribs;

The small ribs are arranged between the first large rib and the second large rib at intervals, and the first large rib, the second large rib and all the small ribs are hinged with the fan nail assembly;

the first fan of big bone is fixedly connected with the connecting area of the end part of the first flexible screen, the second fan of big bone is fixedly connected with the connecting area of the end part of the second flexible screen, or the first fan of big bone is fixedly connected with the connecting area of the end part of the second flexible screen, and the second fan of big bone is fixedly connected with the connecting area of the end part of the first flexible screen.

The beneficial technical effect that display device that this application embodiment provided brought is: the display device adopts a double-sided screen design of a first flexible screen and a second flexible screen which are arranged at intervals in a back-to-back mode, and the display capability of the display device is enriched; the bending screen units are separated from the first flexible screen and the second flexible screen by the bone pieces, and the first flexible screen and the second flexible screen are connected by the bending assembly in each bending screen unit, so that the first flexible screen and the second flexible screen can keep the same bending direction in the bending or flattening process; the bending assembly has elasticity, so that the first flexible screen and the second flexible screen can relatively move along the bending direction in the bending or flattening process, and the first flexible screen and the second flexible screen both have certain bending compensation space, thereby effectively solving the deformation of the extrusion or the pull rope caused by the difference of the curvatures of the first flexible screen and the second flexible screen, and realizing the folding of the double-sided flexible screen;

The beneficial technical effect that the folding fan that this application embodiment provided brought is: the folding fan adopts the first flexible screen, the second flexible screen, the third flexible screen and the bending assembly of the display device as a fan face, so that double-sided display of the fan face can be realized, folding of the double-sided flexible screen can also be realized, the folding fan has the appearance and the same use experience of the traditional folding fan, and the playability and the artistry of the folding fan are restored.

additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

the foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a first embodiment of a display device according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a bending unit according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a bending follower of the bending unit according to an embodiment of the present disclosure;

Fig. 4 is a schematic structural diagram of an angle limiting member of a bending unit according to an embodiment of the present disclosure;

FIGS. 5A and 5B are schematic structural views of an elastic connecting member according to an embodiment of the present disclosure;

Fig. 6 is a schematic view illustrating a display device according to an embodiment of the present disclosure in a bent state;

Fig. 7 is a schematic diagram illustrating an expanded state of a display device according to an embodiment of the present application;

fig. 8 is an expanded structural schematic view of a second embodiment of a display device according to an embodiment of the present disclosure;

fig. 9 is a schematic layout diagram of a control circuit of a display device according to an embodiment of the present disclosure;

fig. 10 is a schematic structural view of a folding fan according to an embodiment of the present disclosure;

Fig. 11 is a cross-sectional view perpendicular to the axial direction of the fan frame of a folding fan provided in an embodiment of the present application;

Fig. 12 is a sectional view of a first embodiment of a folding fan provided in an example of the present application, the sectional view being taken along an axial direction of a fan frame;

Fig. 13 is a sectional view of a second embodiment of a folding fan according to an example of the present application, the sectional view being taken along an axial direction of a fan frame;

fig. 14 is a schematic structural diagram of a locking unit provided in an embodiment of the present application;

FIG. 15 is a schematic view of a fully folded state of a fan-shaped folding screen unit according to an embodiment of the present application;

FIG. 16 is a schematic view of a fully extended state of a fan-shaped folding screen unit according to an embodiment of the present application;

In the figure, the position of the upper end of the main shaft,

100-a flexible screen;

100 a-a folded screen unit; 100a1 — first fold; 100a 2-transition; 100a 3-second bend; 100 b-fan-out region; 100 c-linker region; 100 d-signal circuit area;

110-a first flexible screen; 120-a second flexible screen; 130-a third flexible screen;

200-a bending assembly; 200 a-a bending unit;

210-bending the follower; 210 a-a first bending follower; 210 b-a second bending follower;

211-a hinge unit; 211 a-chain body; 211 b-an articulated arm; 211 c-angle limiter;

212-a flexible liner;

220-an elastic connector;

300-a bone piece;

310-first fan of big bone; 310 a-a first hinge through hole;

320-second fan big bone; 320 a-a second hinge through hole;

330-fan ossicles;

400-fan nail assembly;

410-fan nail; 410 a-first fan nail; 410 b-a second fan nail;

420-lubricating spacer; 430-elastic reset piece; 440-an abutment;

510-a bump; 520 a-locking hole; 520 b-guide groove.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

it will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

The terms referred to in this application will first be introduced and explained:

the bending direction refers to a direction in which the orthographic projection area of the flexible screen is reduced or increased when the flexible screen is bent or unfolded. Taking a rectangular flexible screen as an example, the bending direction is the direction of a straight line where one side of the length of the rectangular flexible screen changes in the orthographic projection when the rectangular flexible screen is bent or unfolded. Taking the fan-shaped flexible screen as an example, the bending direction is the direction of an arc line where any arc segment with a changed length in the orthographic projection is located when the flexible screen is bent or unfolded.

The inventor of this application researches and discovers, in order to improve the use experience of folding fan product, can adopt the sector design of two-sided demonstration, the two sides of sector is flexible screen promptly, but the two sides of sector is the thickness that flexible screen can thicken the sector, the flexible screen that makes to be located the sector two sides has the curvature difference when buckling, the flexible screen that is located the inner circle easily takes place the extrusion deformation, the flexible screen that is located the outer lane easily takes place tensile deformation, consequently two-sided flexible screen is difficult to realize folding. In order to reduce the curvature difference between the two flexible screens as much as possible, the distance between the two flexible screens is the most direct and effective method, the limit is to attach the two flexible screens back to back, but the two flexible screens on the sector surface are difficult to be obtained by bending one flexible screen back to back due to the excessively small screen distance, namely, the integrated molding is difficult to realize.

the application provides a display device and folding fan aims at solving the technical problem in the prior art.

the following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.

an embodiment of the present application provides a display device, a schematic structural diagram of which is shown in fig. 1, including: flexible screen 100, bending assembly 200 and bone piece 300;

The flexible screen 100 includes a first flexible screen 110 and a second flexible screen 120 in a spaced apart arrangement;

bone members 300 have at least two, all of bone members 300 being spaced apart;

the bending assembly 200 comprises at least one bending unit 200a, and two ends of each bending unit 200a are respectively and fixedly connected with two adjacent bone pieces 300; one surface of the combination of the bending component 200 and each bone 300 is connected with the first flexible screen 110, the other surface of the combination of the bending component 200 and each bone 300 is connected with the second flexible screen 120, and the bending component 200 has elasticity, so that the first flexible screen 110 and the second flexible screen 120 can relatively move along the bending direction in the bending or flattening process;

the first flexible screen 110, the second flexible screen 120, and the bending unit 200a between two adjacent bone members 300 constitute a bending screen unit 100 a.

the display device adopts a double-sided screen design of the first flexible screen 110 and the second flexible screen 120 which are arranged at intervals in a back-to-back mode, and the display capability of the display device is enriched. The first flexible screen 110 and the second flexible screen 120 are arranged at intervals, on one hand, a placement space is provided for the bending assembly 200, and on the other hand, the first flexible screen 110 and the second flexible screen 120 can move relatively in the bending or flattening process, namely, the first flexible screen 110 and the second flexible screen 120 are free from mutual restriction and bending degree, so that multiple folding or multiple folding of the double-sided flexible screen 100 can be realized.

the bent screen unit 100a is separated by the bone member 300 between the first flexible screen 110 and the second flexible screen 120, and the first flexible screen 110 and the second flexible screen 120 are connected by the bending assembly 200 in each bent screen unit 100a, so that the first flexible screen 110 and the second flexible screen 120 can keep the same bending direction in the bending or flattening process, thereby avoiding irregular bending such as mutual separation (arching) or mutual interference (depression) of the first flexible screen 110 and the second flexible screen 120, and ensuring the integrity of the display device.

as shown in fig. 6 and 7, the bending assembly 200 has elasticity to allow the first flexible screen 110 and the second flexible screen 120 to relatively move in a bending direction during bending or flattening. On one hand, the first flexible screen 110 and the second flexible screen 120 both have a certain bending compensation space, so that the deformation of the first flexible screen 110 and the second flexible screen 120 due to extrusion or pulling rope caused by difference in curvature is effectively eliminated, and the folding of the double-sided flexible screen 100 is realized; on the other hand, a restoring force is provided for the relative movement of the first flexible screen 110 and the second flexible screen 120, so that the bending assembly 200 is not bent or unfolded due to the transition bending or unfolding, which may cause the whole bending assembly 200 to be bent reversely.

alternatively, the bent screen unit 100a is bent in an S-shape, or bent by a bending number that is a multiple of the S-shape, so that the bending strokes of the first flexible screen 110 and the second flexible screen 120 are the same.

the inventor of the present application considers that, in order to implement the aforementioned bending or flattening manner of the first flexible screen 110 and the second flexible screen 120, each bending unit 200a of the bending assembly 200 needs to be effectively connected with the first flexible screen 110 and the second flexible screen 120, and also needs to have certain elasticity. For this reason, the present application provides one possible implementation manner for the bending unit 200a as follows:

As shown in fig. 2, the bending unit 200a of the embodiment of the present application includes: a bending follower 210 and an elastic link 220;

The bending follower 210 includes: a first bending follower 210a and a second bending follower 210 b; a first bending follower 210a located on one surface of the bending unit 200a, and connected to the first flexible screen 110 along a bending direction of the first flexible screen 110; a second bending follower 210b located on the other side of the bending unit 200a, and connected to the second flexible screen 120 along the bending direction of the second flexible screen 120;

the elastic connection member 220 has a plurality of ends, and both ends of each elastic connection member 220 are respectively connected to the first bending follower 210a and the second bending follower 210 b.

The first bending follower 210a and the second bending follower 210b are respectively connected with the first flexible screen 110 and the second flexible screen 120, so that a force application point is provided for the elastic connecting piece 220, and the possibility that the first flexible screen 110 and the second flexible screen 120 are easily damaged due to stress concentration caused by the direct connection of the elastic connecting piece 220 and the first flexible screen 110 and the second flexible screen 120 is avoided.

alternatively, the first and second bending followers 210a and 210b may be connected to the rear surfaces of the first and second flexible screens 110 and 120, respectively; alternatively, the first and second bending followers 210a and 210b may be connected to lateral edges of the first and second flexible screens 110 and 120, respectively.

the elastic connection member 220 provides an effective connection between the first flexible screen 110 and the second flexible screen 120 and a restoring force after the first flexible screen 110 and the second flexible screen 120 are relatively moved. The number of the elastic connectors 220 is multiple, so as to disperse connection points and better adapt to bending requirements of the first flexible screen 110 and the second flexible screen 120.

optionally, the plurality of elastic connection members 220 are uniformly distributed between the first bending follower 210a and the second bending follower 210 b.

the inventors of the present application have considered that the first bending follower 210a needs to be able to establish an effective connection with the first flexible screen 110 and to be able to follow bending with the first flexible screen 110, and likewise the second bending follower 210b needs to be able to establish an effective connection with the second flexible screen 120 and to be able to follow bending with the second flexible screen 120. For this reason, the present application provides one possible implementation manner for the bending unit 200a as follows:

as shown in fig. 3, each of the first and second bending followers 210a and 210b of the embodiment of the present application includes a plurality of hinge units 211, and a hinge of two adjacent hinge units 211 is fixed to the first flexible screen 110 or the second flexible screen 120.

the first and second bending followers 210a and 210b each have a hinge type structure including a plurality of hinge units 211, providing a degree of mobility for the follow-up bending. Moreover, the hinged position of the two adjacent hinge units 211 of the first bending follower 210a or the second bending follower 210b is fixed on the corresponding first flexible screen 110 or the second flexible screen 120, so that on one hand, the connection points of the first bending follower 210a and the first flexible screen 110 and the second bending follower 210b and the second flexible screen 120 are dispersed, the stress concentration during connection is reduced, and the first flexible screen 110 and the second flexible screen 120 are protected; on the other hand, the hinge structure of two adjacent hinge units 211 is fully utilized, additional parts are not needed, and the cost is reduced.

it can be understood that the smaller the size of the hinge unit 211 in the bending direction, the more the hinge unit fits to the corresponding first flexible screen 110 or second flexible screen 120, and the more the hinge unit fits to the corresponding first flexible screen 110 or second flexible screen 120 during bending.

The inventor of the present application considers that if a malfunction occurs unexpectedly, and the bending degree of the flexible screen 100 is too large, and exceeds the minimum curvature radius of the first flexible screen 110 or the second flexible screen 120, the corresponding flexible screen 100 may deform or even break, and therefore, a certain bending degree protection needs to be provided for the bending of the flexible screen 100. To this end, the present application provides one possible implementation of the hinge unit 211 as follows:

as shown in fig. 3 and 4, the hinge unit 211 of the embodiment of the present application includes: a chain main body 211a, an articulated arm 211b, and an angle stopper 211 c;

One end of the hinge arm 211b is fixedly connected to the chain main body 211a, and the other end is hinged to the corresponding hinge arm 211b of the adjacent hinge unit 211;

The angle limiting member 211c is disposed at a hinge position of the two hinge arms 211b, so that a minimum radius of curvature of the two adjacent hinge units 211 when being bent is not smaller than the minimum radius of curvature of the first flexible screen 110 and the second flexible screen 120.

The chain body 211a provides a connection point for the elastic connection member 220.

the hinge arms 211b provide hinge points for the two adjacent hinge units 211, and can create a moving space for the chain bodies 211a of the two adjacent hinge units 211 to accommodate the relative movement of the two adjacent chain bodies 211a when the corresponding flexible screen 100 is bent.

Alternatively, the joints of two adjacent hinge units 211 may be connected by a sleeve bearing, the inner ring of the sleeve bearing may be connected to the hinge arm 211b of one hinge unit 211, the outer ring of the sleeve bearing may be connected to the hinge arm 211b of another adjacent hinge unit 211, and there may be or may not be a rolling element between the inner ring of the sleeve bearing and the outer ring of the sleeve bearing, but good lubrication between the inner ring of the bearing and the outer ring of the bearing needs to be ensured.

optionally, the angle limiting element 211c may adopt an angle limiting mechanism such as a limiting rotating shaft, and the angle limiting element 211c limits that two adjacent hinge units 211 can only be bent within a range that is suitable for the corresponding flexible screen 100 and not smaller than the minimum curvature radius, so as to protect the corresponding flexible screen 100.

The inventor of the present application considers that, each hinge unit 211 of the first bending follower 210a is not completely attached to the first flexible panel 110, and each hinge unit 211 of the second bending follower 210b is not completely attached to the second flexible panel 120, and there is a possibility of friction or rigid interference, and although the degree of friction or rigid interference is very light, the wear of the corresponding flexible panel 100 will certainly occur over time, which affects the service life of the entire display device. For this reason, the present application provides one possible implementation manner for the bending unit 200a as follows:

As shown in fig. 5A and 5B, the elastic connection member 220 of the embodiment of the present application is an extension spring, rubber, or elastic foam;

the first and second bending followers 210a and 210b each further include: a flexible liner 212;

A flexible pad 212 is disposed at a side of the first flexible panel 110 adjacent to the chain main body 211a of each hinge unit 211 of the first bending follower 210a, and/or a flexible pad 212 is disposed at a side of the second flexible panel 120 adjacent to the chain main body 211a of each hinge unit 211 of the second bending follower 210 b;

or, the flexible liner 212 includes a plurality of liner units, which are disposed on one-to-one correspondence to the side of the chain main body 211a of the hinge unit 211 of the first bending follower 210a close to the first flexible screen 110, and/or the chain main body 211a of the hinge unit 211 of the second bending follower 210b close to the second flexible screen 120.

The flexible gasket 212 provides a certain flexible support for the flexible screen 100 on one hand, and reduces friction and rigid interference; on the other hand, a relatively flat state of the flexible screen 100 can be maintained; on the other hand, the flexible screen 100 can maintain a certain curvature during the bending process, so that the flexible screen is not bent excessively.

optionally, the flexible liner 212 is insulative, and may incorporate a quantity of insulative elastomeric material therein. For example, the main material of the flexible gasket 212 is any plastic material such as Polyimide (PI), polyethylene terephthalate (PET), etc., and the insulating elastic material may be in a thread shape or other shapes, as long as the direction of elastic force recovery of the flexible gasket 212 tends to bend and unfold after the main material of the flexible gasket 212 is doped. In this way, the flexible gasket 212 may maintain a certain curvature of the flexible screen 100 in any bending state so as not to form excessive bending such as right-angle folding, so that the bending degree of the corresponding flexible screen 100 at each hinge unit 211 is approximately uniform, and the flexible screen 100 is protected as much as possible.

an extension spring (also called a tension spring, simply referred to as a tension spring) is a coil spring that bears an axial tension, and is generally made of a material with a circular cross section. When not subjected to a load, as shown in fig. 5A, the tension spring is generally tightly wound without gaps between the coils, and is hardly compressed in the axial direction thereof, but is easily deformed in tension in a direction perpendicular to the axial direction thereof. This is the characteristic of the tension spring utilized in the present application, which achieves: when the first and second bending followers 210a and 210b are relatively moved in the bending direction with the corresponding first and second flexible panels 110 and 120, as shown in fig. 5B (in the drawing, F is a restoring force generated by the tension spring due to deformation, F1 is a component force of F in a direction perpendicular to the first flexible screen 110 and the second flexible screen 120, and F2 is a component force of F in a direction of relative movement between the first flexible screen 110 and the second flexible screen 120), the tension spring can be deformed in a bending direction (i.e. the coils of the tension spring are translated) and generate a corresponding elastic potential energy (i.e. a restoring force) according to the magnitude of the deformation, and at this time, the distance in the axial direction of the tension spring is hardly changed, so that the distance between the first and second bending followers 210a and 210b (i.e., the distance between the first and second flexible screens 110 and 120) is not changed.

The inventors of the present application consider that, in order to achieve smooth bending of the bent screen unit 100a, the direction and the number of bending thereof need to be defined. For this reason, the present application provides one possible implementation manner for the folding screen unit 100a as follows:

as shown in fig. 6, the folding screen unit 100a of the embodiment of the present application includes a first folding portion 100a1, a transition portion 100a2 and a second folding portion 100a3 connected in sequence, wherein the folding directions of the first folding portion 100a1 and the second folding portion 100a3 are opposite;

at least the middle portion of the first bent portion 100a1, the middle portion of the transition portion 100a2, and the middle portion of the second bent portion 100a3 are respectively provided with an elastic connection 220.

the first bending part 100a1 and the second bending part 100a3 of the folded screen unit 100a are opposite in folding direction, so that the folding or unfolding strokes of the first flexible screen 110 and the second flexible screen 120 during the folding or unfolding process are the same, and so on, the folded screen unit 100a must have the bending parts in opposite directions, and the bending parts in opposite directions exist in pairs.

since the curvature of the 3 positions is changed when the folded screen unit 100a is folded in an S-shape, which is the starting point of the first folded portion 100a1, the starting point of the transition portion 100a2, and the starting point of the second folded portion 100a3, the elastic connection members 220 are respectively disposed at least at the middle portion of the first folded portion 100a1, the middle portion of the transition portion 100a2, and the middle portion of the second folded portion 100a3, so as to limit the folded or unfolded states of the first folded portion 100a1, the transition portion 100a2, and the second folded portion 100a3, and ensure the reasonable operation of the folded screen unit 100 a.

the inventor of the present application considers that, since the first flexible screen 110 and the second flexible screen 120 are arranged at an interval, and the bending or flattening of the entire display device does not require a distance between the first flexible screen 110 and the second flexible screen 120, a sufficient bending space is provided between the first flexible screen 110 and the second flexible screen 120, and the first flexible screen 110 and the second flexible screen 120 can be bent back from one flexible screen 100. To this end, the present application provides one possible implementation of the flexible screen 100 as follows:

As shown in fig. 8, the flexible screen 100 of the embodiment of the present application further includes a third flexible screen 130, and the third flexible screen 130 is bent back and then connected to the first flexible screen 110 and the second flexible screen 120, respectively;

the first flexible screen 110, the second flexible screen 120 and the third flexible screen 130 are integrally formed;

The end of the first flexible screen 110 and/or the second flexible screen 120 far away from the third flexible screen 130 is provided with a fan-out area 100b, and the fan-out area 100b is used for arranging input and output interfaces of the power supply circuits of the first flexible screen 110 and the second flexible screen 120;

The end of first flexible screen 110 near third flexible screen 130 and the end of second flexible screen 120 far from third flexible screen 130 have connection area 100c, or the end of second flexible screen 120 near third flexible screen 130 and the end of first flexible screen 110 far from third flexible screen 130 have connection area 100 c; the connection region 100c is used to connect the bone member 300 or an external connection member.

the first flexible screen 110, the second flexible screen 120, and the third flexible screen 130 are integrally formed, and specifically, the first flexible screen 110, the second flexible screen 120, and the third flexible screen 130 may be obtained by bending one flexible screen 100 back to back, and certainly, the distance between the first flexible screen 110 and the second flexible screen 120 should not be less than twice the minimum radius of curvature (i.e., the minimum radius of curvature) of the third flexible screen 130. After the first flexible screen 110, the second flexible screen 120 and the third flexible screen 130 are integrally formed, the whole screen can be a continuous graph, and Mask for manufacturing the flexible screen 100 is conveniently designed.

The fan-out area 100b designed at the end of the first flexible screen 110 and/or the second flexible screen 120 is used for arranging the input and output interfaces of the power supply circuit of the first flexible screen 110 and the second flexible screen 120, and the input and output interfaces can be used for connecting an IC or an FPC and the like. The third flexible screen 130 may be designed without display.

The inventors of the present application have considered that in order to better adapt the flexible screen 100 of the display device to the use of bending or unfolding. Therefore, the application provides the following possible implementation modes for the control circuit of the display screen:

as shown in fig. 9, the side portion of the first flexible screen 110, the second flexible screen 120, and/or the third flexible screen 130 of the embodiment of the present application has a signal circuit area 100d, and the signal circuit area 100d is used for arranging input and output interfaces of control circuit signal lines of the first flexible screen 110 and the second flexible screen 120;

The control circuit signal line comprises a first signal line and a second signal line which are arranged in a staggered mode;

The first signal lines are arranged in a direction of bending or flattening of the first flexible screen 110 and/or the second flexible screen 120; alternatively, when both the first flexible screen 110 and the second flexible screen 120 have fan shapes, the first signal lines are arranged in an arc direction of the first flexible screen 110 and the second flexible screen 120,

The second signal lines are arranged in a direction parallel to the symmetry axis of the first flexible screen 110 or the second flexible screen 120.

Alternatively, the first signal line may be a Data line, and the second signal line may be a Gate line. Specifically, as shown in fig. 9, the Data lines are arranged along the bending or flattening direction of the first flexible screen 110 and/or the second flexible screen 120, when the first flexible screen 110 and/or the second flexible screen 120 are fan-shaped, the Data lines are arranged along the fan-shaped arc surface at equal intervals, the Gate lines are arranged along the direction parallel to the fan-shaped central line, and the intervals accord with the following rules: the arc lengths of the Gate lines cut on any cambered surface are equal. It can be easily demonstrated that the small unit areas divided by the Gate line and the Data line are approximately equal-height parallelograms, so that the area of each small grid is approximately the same. Such cells constitute the pixels of the fan-shaped flexible screen 100. Above first signal line and the mode of arranging of second signal line, the advantage lies in: 1. the Data line typesetting space is saved, and narrow frame design is facilitated; 2. the display image of the flexible screen 100 can be displayed along the fan-shaped arc surface, and the display effect does not need software conversion.

based on the same inventive concept, the embodiment of the present application provides a folding fan, the structural schematic diagram of which is shown in fig. 10 and 11, and the folding fan comprises: a fan, fan rib and fan nail assembly 400;

the sector includes the first flexible screen 110, the second flexible screen 120, the third flexible screen 130 and the bending assembly 200 in any one of the display devices provided in the above embodiments;

the fan ribs are the rib members 300 in any one of the display devices provided in the above embodiments;

The fan rib includes: a first fan big bone 310, a second fan big bone 320 and a plurality of fan small bones 330;

the small fan bones 330 are arranged between the first large fan bone 310 and the second large fan bone 320 at intervals, and the first large fan bone 310, the second large fan bone 320 and all the small fan bones 330 are hinged with the fan nail assembly 400;

the first fan-shaped large rib 310 is fixedly connected with the connecting area 100c at the end of the first flexible screen 110, and the second fan-shaped large rib 320 is fixedly connected with the connecting area 100c at the end of the second flexible screen 120, or the first fan-shaped large rib 310 is fixedly connected with the connecting area 100c at the end of the second flexible screen 120, and the second fan-shaped large rib 320 is fixedly connected with the connecting area 100c at the end of the first flexible screen 110.

The folding fan adopts the first flexible screen 110, the second flexible screen 120, the third flexible screen 130 and the bending component 200 of the display device as the fan faces, so that the double-sided display of the fan faces can be realized, the folding of the double-sided flexible screen 100 can also be realized, the folding fan has the appearance and the same use experience of the traditional folding fan, and the playability and the artistry of the folding fan are restored.

the inventor of the present application considers that when the folding fan is completely folded or completely unfolded, two adjacent fan ribs are in a close state, and when the folding fan is unfolded or folded, a certain change exists in the distance between two adjacent fan ribs, that is, the two adjacent fan ribs can displace along the axial direction of the fan nail 410, so that the folded fan face can be unfolded or folded, if there is not enough displacement space between two adjacent fan ribs, a large extrusion force can be caused to the fan face of the flexible screen 100, so that the fan face of the flexible screen 100 is excessively bent in the unfolding or folding process, and the flexible screen 100 is damaged. Therefore, the application provides the following possible implementation mode for the folding fan:

As shown in fig. 12, the first fan bone 310 and the second fan bone 320 of the embodiment of the present application each have a first hinge through hole 310a, each of the small fan bones 330 has a second hinge through hole (not shown), and the first hinge through hole 310a and the second hinge through hole are coaxially communicated to form a fan nail mounting hole;

the fan nail assembly 400 includes: the fan nail 410, the lubricating spacer 420, the elastic resetting piece 430 and the abutting piece 440;

the fan nail 410 comprises a nail rod and at least one nail cap, the nail cap is positioned at the end part of the nail rod, and at least the nail rod is arranged in the fan nail mounting hole;

the abutting parts 440 are at least two, and all of the abutting parts 440 are sleeved on the nail rod of the fan nail 410 and are fixedly connected with the first fan bone 310 and the second fan bone 320 respectively;

two ends of the elastic resetting piece 430 are respectively abutted against the nail cap of the fan nail 410 and the abutting piece 440 adjacent to the nail cap;

The lubricating spacers 420 are provided with a plurality of lubricating spacers 420, all the lubricating spacers 420 are sleeved on the nail rod of the fan nail 410, and each lubricating spacer 420 is positioned between the adjacent fan ossicles 330, or between the first fan ossicle 310 and the adjacent fan ossicle 330, or between the second fan ossicle 320 and the adjacent fan ossicle 330.

Both ends of the elastic resetting piece 430 respectively act on the nail cap of the fan nail 410 and the abutting piece 440 adjacent to the nail cap, and the abutting piece 440 is fixedly connected with the corresponding fan bone, so that the elastic resetting piece 430 can be used for adjusting the position of the fan bone on the fan nail 410, and the position of each fan bone 330 on the fan nail 410 is indirectly adjusted. The lubricating spacer 420 is used to reduce the friction between the adjacent small ribs 330, or between the first large rib 310 and the adjacent small rib 330, or between the second large rib 320 and the adjacent small rib 330.

when the folding fan is in a completely folded or completely unfolded state, the two large bones and the middle small bones 330 are mutually closed by the elastic force of the elastic resetting piece 430 to form a stable completely folded or completely unfolded state; when the folding fan is in the process of unfolding or folding, the elastic resetting piece 430 can provide a space far away from each other for the two large ribs and the middle small ribs 330, so that the sector of the flexible screen 100 can obtain a sufficient bending space in the process of unfolding or folding, excessive bending is avoided, and the purpose of protecting the flexible screen 100 is achieved.

alternatively, the elastic restoring member 430 may be provided only in the first hinge through hole 310a of one of the trapezoids, or one elastic restoring member 430 may be provided in each of the first hinge through holes 310a of both the trapezoids.

the inventor of the present application, based on the above considerations, provides another possible implementation manner for the folding fan:

As shown in fig. 13, the first fan bone 310 and the second fan bone 320 of the embodiment of the present application each have a first hinge through hole 310a, each of the small fan bones 330 has a second hinge through hole 320a, and the first hinge through hole 310a and the second hinge through hole 320a are coaxially communicated to form a fan nail mounting hole;

The fan nail assembly 400 includes: a first fan nail 410a, a second fan nail 410b, a lubricating spacer 420 and an elastic resetting piece 430;

the first fan nail 410a extends into the fan nail mounting hole from the first hinge through hole 310a of the first fan big bone 310; the second fan nail 410b extends into the fan nail mounting hole from the second hinge through hole 320a of the second fan big bone 320;

the outer diameters of the nail caps of the first fan nail 410a and the second fan nail 410b are larger than the inner diameter of the first hinge through hole 310 a;

the elastic reset piece 430 is arranged in the fan nail mounting hole, and two ends of the elastic reset piece 430 are respectively connected with the first fan nail 410a and the second fan nail 410 b;

the plurality of lubricating spacers 420 are provided, each lubricating spacer 420 is sleeved on the first fan nail 410a, the second fan nail 410b or the elastic restoring member 430, and each lubricating spacer 420 is located between the adjacent fan ossicles 330, between the first fan ossicle 310 and the adjacent fan ossicle 330, or between the second fan ossicle 320 and the adjacent fan ossicle 330.

the principle of this embodiment is substantially the same as the previous embodiment, except that: the fan nail assembly 400 employs two fan nails and an elastic restoring member 430.

The inventor of the present application considers that, after the sector of the folding fan is unfolded by using an external force, the first flexible screen 110 and the second flexible screen 120 of the sector move relatively, and each bending unit 200a in the bending assembly 200 of the sector deforms to obtain a certain restoring force, which makes the unfolded sector have a tendency to return to the folded state. For this reason, the present application provides one possible implementation manner for the display device as follows:

as shown in fig. 14, the folding fan of the embodiment of the present application further includes a locking assembly, where the locking assembly includes at least one locking unit, and the locking units are in one-to-one correspondence with the bending units 200a of the bending assembly 200;

each locking unit includes: the convex block 510 and the guiding groove piece are respectively arranged at the corresponding positions of the two adjacent small ribs 330 or the large rib and the adjacent small rib 330; the guide groove piece is provided with a locking hole 520a and a guide groove 520b, the locking hole 520a and the guide groove 520b are matched with the projection 510, and the hole depth of the locking hole 520a is larger than the groove depth of the guide groove 520 b;

At least two locking holes 520a are respectively arranged at a first position and a second position of the guide groove piece, the first position corresponds to the bending starting point of the bending unit 200a, and the second position corresponds to the bending ending point of the bending unit 200 a; the guide groove 520b connects adjacent two locking holes 520a in the bending direction.

the locking assembly can adopt a convex block 510 locking structure, a locking unit is arranged between any two adjacent fan ribs (including two adjacent small ribs 330, and a large rib and the adjacent small rib 330), each locking unit is in one-to-one correspondence with the bending unit 200a, restoring force generated by the corresponding bending unit 200a can be overcome, and the expansion degree of the fan surface between the two adjacent fan ribs is kept.

When any locking unit works, under the help of the internal pressure provided by the elastic reset piece 430 in the fan nail assembly 400, the convex block 510 is clamped into the corresponding locking hole 520a, so that the two fan ribs are locked to a certain position, the fan surface is kept in a corresponding unfolding state, and the locking of the folding fan unfolding opening degree is realized.

alternatively, any locking unit may be close to the fan nail to obtain better internal pressure, so that the state that the projection 510 is caught in the locking hole 520a is more firmly, even if the folding fan obtains a more stable locking state.

A convex block 510 guide groove 520b is designed on one of two adjacent fan ribs, a locking circular hole is designed on the guide groove 520b, the hole is deeper than the depth of the arc-shaped groove, and when the convex block 510 rolls to the locking circular hole, a spring of the fan nail is constructed to lock the fan at the position.

alternatively, the guiding groove may be fixedly connected to the surface of the corresponding fan rib, embedded into the corresponding fan rib, or integrally formed with the fan rib (i.e. the locking hole 520a and the guiding groove 520b are directly opened on the surface of the fan rib). The guiding groove 520b is arc-shaped and matched with the bending direction, so as to adapt to the unfolding or folding of the folding fan.

Alternatively, at least the opening of the locking hole 520a is shaped to correspond to the surface shape of the projection 510, and the cross section of the guide groove 520b perpendicular to the axial direction thereof is shaped to correspond to the surface shape of the projection 510.

Alternatively, the protrusion 510 may be spherical or hemispherical, and the curved surface may facilitate the protrusion 510 to be locked into the locking hole 520a, or facilitate the protrusion 510 to be withdrawn from the locking hole 520 a.

Optionally, a plurality of locking holes 520a may be disposed between the first position and the second position of the guide groove member to provide a multi-stage opening degree for the fan from the folded state to the unfolded state, so as to meet individual requirements for different requirements of the opening degree of the fan. The inventor of the present application considers that the flexible screen 100 often needs to be matched with components such as a CPU, a motherboard, an internal memory, an external interface, and the like, and these components need to be arranged in a suitable place on the folding fan. Therefore, the application provides the following possible implementation mode for the folding fan:

The first fan big bone 310 and/or the second fan big bone 320 of the embodiment of the application have an assembly cavity, and the assembly cavity is used for placing components and parts matched with the display device.

the assembly cavity reserved by the first fan big bone 310 and/or the second fan big bone 320 well solves the problem of arranging the components and parts matched with the display device, the fan big bones are positioned at two ends of the whole folding fan and are more suitable for being connected with an end interface of the display device, the components and parts matched with the display device are arranged in the fan big bones, and the display device wiring is more facilitated.

the bending requirements of the folding fan sector are demonstrated below:

Fig. 15 is a schematic diagram of a fully folded state of a folding screen unit 100a of the folding fan sector according to the present embodiment. In the figures, a is the distance between the first flexible screen 110 and the second flexible screen 120, and b is the width of the bone member 300; r is the minimum radius of curvature of the folded screen unit 100 a.

As shown in fig. 15, the bent screen unit 100a is in a semi-circular state at a portion higher than the rib 300, and the width of the bent unit 200a in the bent screen unit 100a is the same as the width of the rib 300. The minimum radius of the inner fold curl of the folded screen unit 100a is (r-a/2) and the minimum radius of the outer fold curl is (r + a/2). It can be seen that (r-a/2) should be greater than the minimum radius of curvature of the flexible screen 100.

considering that third flexible screen 130 of flexible screen 100 is bent at bone 300, a radius of curvature of third flexible screen 130 may be obtained as a/2. Defining the minimum curvature radius of the folding screen unit 100a as R, R should satisfy the following condition to ensure that the display device is not damaged during the folding process:

r < a/2 and R < R-a/2 (1)

since the thickness of the bone member 300 is uniform and the thickness of the first flexible shield 110 and the second flexible shield 120 on both sides of the bone member 300 is uniform, the value of a is constant but the value of r is varied. In the process of extending from the fan nail to the end head of the fan face, the r value is increased in proportion to the length of the radius corresponding to the fan face. Therefore, the closer the sector is to the sector area of the fan nail, the smaller the r value, and if the minimum value of the sector area r is defined as rmin, the minimum curvature radius function of the flexible display panel should satisfy the following condition:

r < a/2 and R < rmin-a/2 (2)

Because the sector is fixed on the fan ossicles or the fan ossicles, in order to ensure that the first flexible screen 110 and the second flexible screen 120 between two adjacent fan ossicles can be unfolded and folded well, the lengths of the first flexible screen 110 and the second flexible screen 120 between two adjacent fan ossicles are the same, so that the first flexible screen 110 and the second flexible screen 120 can be adhered to the bent screen unit 100a well in the unfolding and folding processes without being protruded or stretched under stress. The length of the surface of the first flexible screen 110 between two adjacent small fan bones is defined as Lup, and the length of the second flexible screen 120 is defined as Ldown, which can prove that:

L＝L＝π(r-a/2)+b+π(r+a/2)＝2πr+b (3)

therefore, in the design scheme, the sector of the folding fan can be completely unfolded, and the first flexible screen 110 and the second flexible screen 120 are not protruded mutually or one of the flexible screens is stretched.

fig. 16 is a schematic diagram of a fully unfolded state of a folding screen unit 100a with a folding fan section according to this embodiment. Wherein, the bone 300 includes a fanciful bone and a fanciful bone. To more intuitively describe the design, FIG. 16 specifically abstractly expands the direction along the fan plane into a plane.

Because the sector is a sector structure, the length of the arc a 'B' is different from the length of the arc C 'D' necessarily in the flexible screen 100 between the two ribs. If the two ribs are designed in parallel, assuming that the arc a 'B' satisfies the typical design "S" (i.e., the bending form of the flexible screen 100 in a rectangular structure, such as the bending state shown in fig. 15), the arc C 'D' cannot be formed in the typical design "S" because of the inconsistent lengths. Therefore, the fan ribs and the fan ribs of the folding fan must be bent to ensure that the flexible screen 100 of the fan surface is not stressed all the time during the bending and unfolding processes, so that the first flexible screen 110 and the second flexible screen 120 are mutually protruded or at least one of the first flexible screen and the second flexible screen is stretched. That is, the fan rib structure provided by the embodiment satisfies: the width between two fan ribs on the same cambered surface is linearly increased along with the length from the cambered surface to the fan nail. The following are demonstrated:

in any arc surface of fig. 16, the width of the fan ossicle is defined as b, the distance between the first flexible screen 110 and the second flexible screen 120 attached to the fan ossicle is defined as a, the lengths of the first flexible screen 110 and the second flexible screen 120 between two adjacent fan ossicles are both L, and the radius of the typical design "S" shape is defined as r. The unit length of the radius of the circle on which the first flexible screen 110 and the second flexible screen 120 are located is n.

the formula for the arc length is:

Arc length is angle (radian measure) the radius of the arc circle (4)

according to the formula (3), any cambered surface can be obtained:

L＝2πr+b (5)

the following can be obtained:

r＝(L-b)/2π (6)

from the arc length equation (4) we can obtain:

L＝|β|kn；b＝|α|kn (7)

Wherein: alpha and beta are angles of corresponding arcs; k is the ratio of the radius of the circle where the corresponding arc is located to the unit length;

When formula (7) is introduced into formula (6), it is possible to obtain:

r＝k[(|β|n-|α|n)/2π] (8)

according to fig. 15, the space between two fan ribs of any cambered surface of the S-shaped typical design in the folded state is 4r, then

4r＝kn*4[(|β|-|α|)/2π] (9)

Wherein: kn is the length from the cambered surface to the fan nail; 4[ (| - | α |)/2 π ] is a constant, proportional coefficient

i.e. 4r increases linearly with kn, as evidenced.

if the folding fan is kept as beautiful as possible, the maximum distance between the two fan ribs on the cambered surface in the folded state is as small as possible.

defining the space between two fan ribs of any arc surface of a typical design 'S' shape in a folded state as M, the maximum value of M in fig. 16 is an arc C 'D', that is:

M＝kn*4[(|β|-|α|)/2π] (10)

Minimum of M is arc a 'B':

M＝kn*4[(|β|-|α|)/2π] (11)

Then the process of the first step is carried out,

M＝(k/k)*M＝(k/k)*4r＝(k/k)*4*(L-b)/2π (12)

as can be seen from equation (12), the conditions for maintaining the beauty as much as possible include: 1. under the condition that any position of the hardware deformation component is larger than the minimum curvature radius of the flexible display panel, the Lmin is as close to bmin as possible; 2. kmax/kmin is as small as possible.

By applying the embodiment of the application, at least the following beneficial effects can be realized:

1. the display device adopts a double-sided flexible screen design of the first flexible screen and the second flexible screen which are arranged at intervals in a back-to-back mode, and the display capability of the display device is enriched. The first flexible screen and the second flexible screen are arranged at intervals, so that on one hand, a mounting space is provided for the bending assembly, and on the other hand, the first flexible screen and the second flexible screen can move relatively in the bending or flattening process, namely, the first flexible screen and the second flexible screen are not restricted and bendable, so that multiple folding or multiple folding of the double-sided flexible screen can be realized;

2. the first flexible screen and the second flexible screen are separated into bent screen units by the aid of the bone pieces, and are connected by the bending assemblies in the bent screen units, so that the first flexible screen and the second flexible screen can keep the same bending direction in the bending or flattening process, irregular bending such as mutual separation (arching) or mutual interference (depression) of the first flexible screen and the second flexible screen is avoided, and the integrity of the display device is ensured;

3. the bending assembly has elasticity, so that the first flexible screen and the second flexible screen can relatively move along the bending direction in the bending or flattening process. On one hand, the first flexible screen and the second flexible screen both have certain bending compensation space, so that the extrusion or stay cord deformation of the first flexible screen and the second flexible screen caused by curvature difference is effectively eliminated, and the folding of the double-sided flexible screen is realized; on the other hand, restoring force is provided for the relative movement of the first flexible screen and the second flexible screen, so that the bending assembly cannot be folded due to the fact that the whole bending assembly is reversely bent due to transition bending or unfolding after being bent or unfolded;

4. The first bending follower and the second bending follower are respectively connected with the first flexible screen and the second flexible screen, so that a force application point is provided for the elastic connecting piece, and the possibility that the first flexible screen and the second flexible screen are easily damaged due to stress concentration caused by direct connection of the elastic connecting piece and the first flexible screen and the second flexible screen is avoided;

5. the first bending follower and the second bending follower are both in a hinge type structure comprising a plurality of hinge units, and the degree of motion is provided for follow-up bending. In addition, the hinged parts of the two adjacent hinge units of the first bending follower or the second bending follower are fixed on the corresponding first flexible screen or the second flexible screen, so that on one hand, connection points of the first bending follower and the first flexible screen and connection points of the second bending follower and the second flexible screen are dispersed, stress concentration during connection is reduced, and the first flexible screen and the second flexible screen are protected; on the other hand, the hinge structure of two adjacent hinge units is fully utilized, additional parts are not needed, and the cost is reduced;

6. the hinge unit includes: chain main part, articulated arm and angle locating part. The chain body provides a connection point for the elastic connecting piece; the hinge arm provides a hinge point for two adjacent hinge units on one hand, and can create a movable space for the chain main bodies of the two adjacent hinge units on the other hand so as to adapt to the relative movement of the two adjacent chain main bodies when the flexible screen is bent along with the corresponding flexible screen; the angle limiting pieces limit that two adjacent hinge units can only be bent within the range of adapting to the corresponding flexible screen not less than the minimum curvature radius so as to protect the corresponding flexible screen;

7. a flexible gasket is arranged between the hinge unit and the corresponding flexible screen, so that on one hand, a certain flexible support is provided for the flexible screen, and friction and rigid interference are reduced; on the other hand, the relatively flat state of the flexible screen can be maintained; on the other hand, the flexible screen keeps a certain curvature in the bending process, so that excessive bending is avoided;

8. The bending directions of a first bending part and a second bending part of the screen unit are opposite, so that the bending or unfolding strokes of the first flexible screen and the second flexible screen are the same in the bending or unfolding process;

9. After the first flexible screen, the second flexible screen and the third flexible screen are integrally formed, the whole screen can be in a continuous pattern, and Mask for manufacturing the flexible screen is conveniently designed;

10. in the control circuit signal lines of the flexible screen, the first signal lines are arranged along the bending or flattening direction of the first flexible screen and/or the second flexible screen, and the second signal lines are arranged along the direction parallel to the symmetry axis of the first flexible screen or the second flexible screen, so that the typesetting space of the signal lines can be saved, and the narrow frame design is facilitated; the display image of the flexible screen can be presented along the folding direction (such as a fan-shaped arc surface), and the display effect does not need software conversion.

Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

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

in the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

it should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims

1. a display device, comprising: a flexible screen (100), a bending assembly (200) and a bone (300);

the flexible screen (100) comprises a first flexible screen (110) and a second flexible screen (120) which are arranged in a back-to-back spacing way;

the bone parts (300) are at least two, and all the bone parts (300) are arranged at intervals;

the bending assembly (200) comprises at least one bending unit (200a), and two ends of each bending unit (200a) are fixedly connected with two adjacent bone parts (300) respectively; one surface of the combination of the bending component (200) and each bone part (300) is connected with the first flexible screen (110), the other surface of the combination of the bending component (200) and each bone part (300) is connected with the second flexible screen (120), and the bending component (200) has elasticity, so that the first flexible screen (110) and the second flexible screen (120) can move relatively along the bending direction in the bending or flattening process;

The first flexible screen (110), the second flexible screen (120) and the bending unit (200a) between two adjacent bone parts (300) form a bending screen unit (100 a).

2. The display device according to claim 1, wherein the bending unit (200a) comprises: a bending follower (210) and an elastic connecting piece (220);

the bending follower (210) comprises: a first bending follower (210a) and a second bending follower (210 b); the first bending follower (210a) is positioned on one surface of the bending unit (200a) and is connected with the first flexible screen (110) along the bending direction of the first flexible screen (110); the second bending follower (210b) is positioned on the other surface of the bending unit (200a) and is connected with the second flexible screen (120) along the bending direction of the second flexible screen (120);

the elastic connecting piece (220) is provided with a plurality of elastic connecting pieces, and two ends of each elastic connecting piece (220) are respectively connected with the first bending follower (210a) and the second bending follower (210 b).

3. the display device according to claim 2, wherein the first bending follower (210a) and the second bending follower (210b) each comprise a plurality of hinge units (211), and a hinge joint of two adjacent hinge units (211) is fixed on the first flexible screen (110) or the second flexible screen (120).

4. the display device according to claim 3, wherein the hinge unit (211) comprises: a chain main body (211a), an articulated arm (211b) and an angle stopper (211 c);

One end of the hinge arm (211b) is fixedly connected with the chain main body (211a), and the other end of the hinge arm is hinged with the corresponding hinge arm (211b) of the adjacent hinge unit (211);

The angle limiting pieces (211c) are arranged at the hinged positions of the two hinged arms (211b) which are hinged with each other, so that the minimum curvature radius of the two adjacent hinge units (211) when being bent is not smaller than the minimum curvature radius of the first flexible screen (110) and the second flexible screen (120).

5. The display device according to claim 4, wherein the elastic connector (220) is a tension spring, rubber, or elastic foam;

the first and second bending followers (210a, 210b) each further include: a flexible liner (212);

the flexible liner (212) is arranged on one side of the chain main body (211a) of each hinge unit (211) of the first bending follower (210a) of the first flexible screen (110), and/or the flexible liner (212) is arranged on one side of the chain main body (211a) of each hinge unit (211) of the second bending follower (210b) of the second flexible screen (120);

Or, the flexible liner (212) comprises a plurality of liner units, the liner units are arranged on one-to-one correspondence of the chain main body (211a) of the hinge unit (211) of the first bending follower (210a) close to the first flexible screen (110), and/or the liner units are arranged on one-to-one correspondence of the chain main body (211a) of the hinge unit (211) of the second bending follower (210b) close to the second flexible screen (120).

6. the display device according to claim 2, wherein the folded screen unit (100a) comprises a first folded part (100a1), a transition part (100a2) and a second folded part (100a3) connected in sequence, and the first folded part (100a1) and the second folded part (100a3) are folded in opposite directions;

elastic connecting pieces (220) are respectively arranged at least in the middle of the first bent part (100a1), the transition part (100a2) and the second bent part (100a 3).

7. the display device according to any one of claims 1 to 6, wherein the flexible screen (100) further comprises a third flexible screen (130), and the third flexible screen (130) is bent back and then is connected with the first flexible screen (110) and the second flexible screen (120);

The first flexible screen (110), the second flexible screen (120) and the third flexible screen (130) are integrally molded;

The end of the first flexible screen (110) and/or the second flexible screen (120) far away from the third flexible screen (130) is provided with a fan-out area (100b), and the fan-out area (100b) is used for arranging input and output interfaces of power supply circuits of the first flexible screen (110) and the second flexible screen (120);

-the end of the first flexible screen (110) close to the third flexible screen (130) and the end of the second flexible screen (120) remote from the third flexible screen (130) have a connection zone (100c), or-the end of the second flexible screen (120) close to the third flexible screen (130) and the end of the first flexible screen (110) remote from the third flexible screen (130) have a connection zone (100 c); the connection region (100c) is used for connecting the bone parts (300) or external connecting elements.

8. The display device according to claim 7, wherein the side portion of the first flexible screen (110), the second flexible screen (120), and/or the third flexible screen (130) has a signal circuit area (100d), the signal circuit area (100d) is used for arranging input and output interfaces of control circuit signal lines of the first flexible screen (110) and the second flexible screen (120);

The control circuit signal lines comprise first signal lines and second signal lines which are arranged in a staggered mode;

the first signal line is arranged along a direction of bending or flattening of the first flexible screen (110) and/or the second flexible screen (120); or, when the first flexible screen (110) and the second flexible screen (120) are both fan-shaped, the first signal line is arranged along an arc direction of the first flexible screen (110) and the second flexible screen (120),

The second signal line is arranged in a direction parallel to a symmetry axis of the first flexible screen (110) or the second flexible screen (120).

9. a folding fan, comprising: a fan, fan rib and fan pin assembly (400);

the sector comprising the first flexible screen (110), the second flexible screen (120), the third flexible screen (130) and the bending assembly (200) in the display device according to any one of claims 7 or 8;

the fan rib is the rib (300) in the display device according to any one of the claims 7 or 8;

the fan rib comprises: a first fan big bone (310), a second fan big bone (320) and a plurality of fan small bones (330);

the small fan bones (330) are arranged between the first large fan bone (310) and the second large fan bone (320) at intervals, and the first large fan bone (310), the second large fan bone (320) and all the small fan bones (330) are hinged with the fan nail assembly (400);

the first fan-shaped large rib (310) is fixedly connected with a connecting area (100c) at the end part of the first flexible screen (110), the second fan-shaped large rib (320) is fixedly connected with a connecting area (100c) at the end part of the second flexible screen (120), or the first fan-shaped large rib (310) is fixedly connected with a connecting area (100c) at the end part of the second flexible screen (120), and the second fan-shaped large rib (320) is fixedly connected with a connecting area (100c) at the end part of the first flexible screen (110).

10. The folding fan according to claim 9, wherein the first fan bone (310) and the second fan bone (320) are provided with first hinge through holes (310a), each fan ossicle (330) is provided with second hinge through holes (320a), and the first hinge through holes (310a) and the second hinge through holes (320a) are coaxially communicated to form fan nail mounting holes;

The fan nail assembly (400) comprises: the fan nail (410), the lubricating spacer (420), the elastic resetting piece (430) and the abutting piece (440);

The fan nail (410) comprises a nail rod and at least one nail cap, the nail cap is positioned at the end part of the nail rod, and at least the nail rod is arranged in the fan nail mounting hole;

the number of the abutting parts (440) is at least two, and all the abutting parts (440) are sleeved on the nail rod of the fan nail (410) and are fixedly connected with the first fan bone (310) and the second fan bone (320) respectively;

two ends of the elastic resetting piece (430) are respectively abutted against the nail cap of the fan nail (410) and the abutting piece (440) adjacent to the nail cap;

The lubrication spacer (420) is provided with a plurality of spacers, all the lubrication spacer (420) is sleeved on the nail rod of the fan nail (410), and each lubrication spacer (420) is positioned between the adjacent fan small bones (330), or the first fan large bone (310) is adjacent to the fan small bones (330), or the second fan large bone (320) is adjacent to the fan small bones (330).

11. the folding fan according to claim 9, wherein the first fan bone (310) and the second fan bone (320) are provided with first hinge through holes (310a), each fan ossicle (330) is provided with second hinge through holes (320a), and the first hinge through holes (310a) and the second hinge through holes (320a) are coaxially communicated to form fan nail mounting holes;

The fan nail assembly (400) comprises: the lubrication device comprises a first fan nail (410a), a second fan nail (410b), a lubrication spacer (420) and an elastic resetting piece (430);

the first fan nail (410a) extends into the fan nail mounting hole from the first hinge through hole (310a) of the first fan big bone (310); the second fan nail (410b) extends into the fan nail mounting hole from a second hinge through hole (320a) of the second fan big bone (320);

the outer diameters of the nail caps of the first fan nail (410a) and the second fan nail (410b) are larger than the inner diameter of the first hinge through hole (310 a);

the elastic reset piece (430) is arranged in the fan nail mounting hole, and two ends of the elastic reset piece (430) are respectively connected with the first fan nail (410a) and the second fan nail (410 b);

the lubrication spacer (420) is provided with a plurality of lubricating spacers (420), each lubricating spacer (420) is sleeved on the first fan nail (410a), the second fan nail (410b) or the elastic reset piece (430), and each lubricating spacer (420) is positioned between the adjacent fan small bones (330), or the first fan large bone (310) is positioned between the adjacent fan small bones (330), or the second fan large bone (320) is positioned between the adjacent fan small bones (330).

12. folding fan according to claim 10 or 11, characterized in that it further comprises a locking assembly comprising at least one locking unit, which corresponds one-to-one to the folding units (200a) of the folding assembly (200);

Each of the locking units includes: the lug (510) and the guide groove piece are respectively arranged at the corresponding positions of two adjacent small fan bones (330) or the large fan bone and the adjacent small fan bone (330); the guide groove piece is provided with a locking hole (520a) and a guide groove (520b), the locking hole (520a) and the guide groove (520b) are matched with the lug (510), and the hole depth of the locking hole (520a) is larger than the groove depth of the guide groove (520 b);

The number of the locking holes (520a) is at least two, and the locking holes are respectively arranged at a first position and a second position of the guide groove piece, the first position corresponds to the bending starting point of the bending unit (200a), and the second position corresponds to the bending end point of the bending unit (200 a); the guide groove (520b) connects two adjacent locking holes (520a) along the bending direction.

13. Folding fan according to one of claims 9 to 11, characterized in that the first (310) and/or the second (320) rib has/have a mounting cavity for receiving components adapted to the display device.