CN113689789B

CN113689789B - Display device

Info

Publication number: CN113689789B
Application number: CN202110931591.4A
Authority: CN
Inventors: 许彬
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2023-05-09
Anticipated expiration: 2041-08-13
Also published as: CN113689789A

Abstract

The application discloses a display device, which relates to the technical field of display, wherein the display device comprises a flattened state and a folded state, and the display device comprises a bending area; further comprises: a flexible display panel including adjacent first and second regions; a first movable support plate covering the first area; the first connecting rod mechanism comprises a pressing wheel, a connecting rod and a hinge, and the pressing wheel is movably connected with one end of the first movable supporting plate, which is close to the bending area; the first end of the connecting rod is movably connected with the pinch roller, and the second end of the connecting rod is movably connected with the hinge; in the flattened state, the connecting rod is vertical to the plane where the first movable supporting plate is located, and the first connecting rod mechanism is self-locking; in the folded state, the connecting rod and the plane where the first movable supporting plate are located are at a certain angle, and the first connecting rod mechanism is unlocked. The folding screen folding device can effectively improve uneven phenomena such as folds, dents and warpage generated after folding the folding screen, and improves the quality of a display device.

Description

Display device

Technical Field

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

Background

As flexible display technologies are becoming mature, display devices with folding functions (such as folding mobile phones, folding tablet computers, or folding tablet computers) will be a great trend in the future; the display portions of these display devices having a folding function are foldable. Compared with the traditional display device, the display device with the folding function can realize the switching of the physical size of the display device, and greatly improves the use experience of users.

Currently, a display screen of a display device having a folding function is generally called a folding screen. The folding screen generally comprises: a flexible display panel. The flexible display panel may include: a foldable portion, and a planar portion located on one side of the foldable portion. When the display surface of the foldable part is coplanar with the display surface of the plane part, the folding screen is in a flattened state; when the display surfaces of the two plane parts are at a preset angle, the folding screen is in a folded state. However, the existing folding screen is easy to cause bad phenomena of whitened folds, dents, warpage and the like at the folding position, and the display effect of the folding screen is affected.

Disclosure of Invention

In view of this, this application provides a display device, adopts and is provided with first movable support board and first link mechanism mode in the side that flexible display panel deviates from the plain noodles, can effectively improve the unevenness phenomenon such as crease, dent and warpage that the folding screen folding back produced, improves display device's quality.

In order to solve the technical problems, the application has the following technical scheme:

in a first aspect, the present application provides a display device, including: the display device comprises a flattened state and a folded state, and comprises a bending area; the display device further includes:

the flexible display panel comprises a first area and a second area which are adjacent to each other, and the first area and the second area are positioned on the same side of the bending area;

the first movable supporting plate is positioned on one side of the flexible display panel, which is away from the light-emitting surface, and covers the first area along the direction perpendicular to the light-emitting surface of the flexible display panel;

the first connecting rod mechanism is positioned at one side of the first movable supporting plate, which is away from the flexible display panel; the first connecting rod mechanism comprises a pressing wheel, a connecting rod and a hinge, wherein the pressing wheel is movably connected with one end of the first movable supporting plate, which is close to the bending area, and is contacted with one side of the first movable supporting plate, which is away from the flexible display panel; the first end of the connecting rod is movably connected with the pinch roller, and the second end of the connecting rod is movably connected with the hinge;

in the flattened state, the connecting rod is perpendicular to the first movable supporting plate; in the folded state, the connecting rod and the plane where the first movable supporting plate is located form a certain angle.

Compared with the prior art, the display device provided by the invention has the advantages that at least the following beneficial effects are realized:

the display device provided by the application adopts a mode that a first movable supporting plate and a first connecting rod mechanism are arranged on one side, away from a light-emitting surface, of a flexible display panel, wherein the first connecting rod mechanism comprises a pressing wheel, a connecting rod and a hinge; under the flatly-folded state, the connecting rod is perpendicular to the plane where the first movable support plate is located, the first connecting rod mechanism is unlocked, at this moment, the pinch roller only receives the supporting force of connecting rod, and this supporting force is perpendicular to the first movable support plate, the pinch roller is parallel to the direction of first movable support plate does not receive the force, the condition that does not have the activity, even slight external force touches, and the supporting force of first movable support plate to flexible display panel is great, the self-locking state of first connecting rod mechanism also can not be broken, the pinch roller still can not receive external force in the direction that is parallel to first movable support plate, flexible display panel also can not produce deformation, flexible display panel still is in the flatly-folded state, can satisfy the good user experience under the display device flatly-folded state. In a folding state, the connecting rod and the plane where the first movable supporting plate is positioned form a certain angle, the first connecting rod mechanism is unlocked, at the moment, the connecting rod has a certain supporting force pulling force on the pinch roller, the direction of the supporting force is consistent with the extending direction of the connecting rod, and the extending direction of the connecting rod is not perpendicular to the first movable supporting plate, so that the acting force of the pinch roller on the first movable supporting plate is reduced; under the bending state, the acting force supporting force of the pinch roller on the first movable supporting plate is smaller, so that the acting force of the first movable supporting plate on the flexible display panel is further reduced, and the flexible display panel cannot be dented or folded.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic structural diagram of a display device in a flattened state according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of the display device along A-A' provided by the embodiment of FIG. 1;

fig. 3 is a schematic structural diagram of a display device in a folded state according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of the display device along B-B' provided by the embodiment of FIG. 3;

FIG. 5 is a schematic view of a portion of a display device C according to the embodiment shown in FIG. 2;

FIG. 6 is a schematic diagram showing a portion of D in the display device according to the embodiment shown in FIG. 4;

fig. 7 is a schematic diagram of another structure of a display device according to an embodiment of the disclosure;

FIG. 8 is a diagram illustrating a pinch roller force analysis provided by an embodiment of the present application;

FIG. 9 is a schematic diagram showing a portion of C in the display device according to the embodiment shown in FIG. 2;

fig. 10 is a schematic diagram of another structure of a display device according to an embodiment of the present application.

Detailed Description

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect. Furthermore, the term "coupled" as used herein includes any direct or indirect electrical coupling. Accordingly, if a first device couples to a second device, that connection may be through a direct electrical coupling to the second device, or through another device or coupling means coupled to ground. The description hereinafter sets forth the preferred embodiment for carrying out the present application, but is not intended to limit the scope of the present application in general, for the purpose of illustrating the general principles of the present application. The scope of the present application is defined by the appended claims. The same points between the embodiments are not described in detail.

The following detailed description refers to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of a display device in a flattened state according to an embodiment of the present application, fig. 2 is a cross-sectional view along A-A 'of the display device in the embodiment of fig. 1, fig. 3 is a schematic structural view of the display device in a folded state according to an embodiment of the present application, fig. 4 is a cross-sectional view along B-B' of the display device in the embodiment of fig. 3, and referring to fig. 1 to 4, a display device 100 provided in the present application includes a flattened state 20 and a folded state 30, and a bending region 10 is provided in the display device 100; the display device 100 further includes:

a flexible display panel 40, the flexible display panel 40 including adjacent first and

second regions

41 and 42, the first and

second regions

41 and 42 being located on the same side of the bending region 10, as shown in fig. 1, the first region 41 being located between the second region 42 and the bending region 10;

the first movable supporting plate 50, the first movable supporting plate 50 is located at one side of the flexible display panel 40 away from the light-emitting surface S, and along the direction D3 perpendicular to the light-emitting surface of the flexible display panel, the first movable supporting plate 50 covers the first area 41;

a first link mechanism 60, the first link mechanism 60 being located at a side of the first movable supporting plate 50 facing away from the flexible display panel 40, the first link mechanism 60 being for providing a supporting force to the first movable supporting plate 50; the first link mechanism 60 comprises a pressing wheel 61, a link 62 and a hinge 63, wherein the pressing wheel 61 is movably connected with one end of the first movable supporting plate 50 close to the bending area 10, and the pressing wheel 61 is contacted with one side of the first movable supporting plate 50 away from the flexible display panel 40; the first end of the connecting rod 62 is movably connected with the pinch roller 61, and the second end of the connecting rod 62 is movably connected with the hinge 63;

in the flattened state 20, the connecting rod 62 is perpendicular to the first movable supporting plate 50, and the first connecting rod mechanism 60 is self-locking; in the folded state 30, the link 62 is at an angle to the plane of the first movable support plate 50, and the first link mechanism 60 is unlocked.

It should be noted that, the embodiment shown in fig. 1 only schematically illustrates a schematic structural diagram of the display device 100 in the flattened state 20, where the dimensions of the bending region 10, the first region 41 and the second region 42 do not represent actual dimensions; the embodiment shown in fig. 2 only schematically shows the relative positional relationship of the first movable supporting plate 50 and the flexible display panel 40, and does not represent the actual size of the first movable supporting plate 50, and furthermore, the embodiment shown in fig. 2 only schematically shows the relative positional relationship of the pressing wheel 61, the link 62, and the hinge 63 in the first link mechanism 60, and does not represent the actual size; the embodiment shown in fig. 3 only schematically shows a schematic structural view of the display device 100 in the folded state 30; the embodiment shown in fig. 4 only schematically illustrates the relative positional relationship of pinch roller 61, link 62 and hinge 63 in first link mechanism 60 in the bent state of display device 100, and does not represent the actual dimensions.

Specifically, as shown in fig. 1 to 4, a display device 100 provided in the present embodiment includes a flattened state 20 and a folded state 30, and has a bending region 10; it will also be appreciated that the display device 100 is a foldable display device having a fully folded state 30, a semi-folded state, and a flattened state 20, and that the respective states may be selected according to the use requirements of the display device 100.

Further, the display device 100 further includes a flexible display panel 40, the flexible display panel 40 has a bending region 10, the flexible display panel 40 includes a first region 41 and a second region 42, the first region 41 and the second region 42 are located on the same side of the bending region 10, and the first region 41 is located between the second region 42 and the bending region 10.

The display device 100 further includes a first movable support plate 50 located on a side of the flexible display panel 40 facing away from the light-emitting surface S, where in the flattened state 20, an orthographic projection of the first movable support plate 50 in a direction D3 perpendicular to the light-emitting surface of the flexible display panel is located within a range of an orthographic projection of the first region 41 in a direction D3 perpendicular to the light-emitting surface of the flexible display panel, and the first movable support plate 50 supports the first region 41 of the flexible display panel 40; because the first area 41 is located between the bending area 10 and the second area 42, the first area 41 is closer to the bending area 10, when the flexible display panel 100 is bent, the bending degree of the flexible display panel 40 corresponding to the first area 41 is higher, and the first movable support plate 50 is arranged on one side, away from the light emitting surface S of the flexible display panel, of the first area 41, so that the flexible display panel 40 can be effectively supported, and uneven phenomena such as folds, dents, warpage and the like of the flexible display panel 40 corresponding to the first area 41 can be avoided in the bending process.

Further, the first link mechanism 60 is disposed on a side of the first movable supporting plate 50 facing away from the flexible display panel 40, the first link mechanism 60 includes a pressing wheel 61, a connecting rod 62 and a hinge 63, a first end of the connecting rod 62 is movably connected with the pressing wheel 61, a second end of the connecting rod 62 is movably connected with the hinge 63, the pressing wheel 61 is movably connected with one end of the first movable supporting plate 50 near the bending region 10, and the pressing wheel 61 contacts with a side of the first movable supporting plate 50 facing away from the flexible display panel 40 and supports the first movable supporting plate 50; the first movable supporting plate 50 can realize movement through the first link mechanism 60 movably connected with the first movable supporting plate, and the first movable supporting plate 50 can provide different force supports for the flexible display panel 40 when the display device 100 is in different states, and then the force applied to the flexible display panel 40 corresponding to the first area 41 is analyzed by simulating the flexible display panel 40 to be in the fully folded state 30 and the flattened state 20.

In the flattened state 20, please refer to fig. 2, the connecting rod 62 is perpendicular to the first movable supporting plate 50, the vertical angle includes an angle within the tolerance range, at this time, the pressing wheel 61 is only supported by the connecting rod 62, and the supporting force is perpendicular to the first movable supporting plate 50, the pressing wheel 61 is not stressed in the direction parallel to the first movable supporting plate 50, and has no movable condition, so that the pressing wheel 61 is stressed in the direction parallel to the first movable supporting plate 50, the self-locking condition of the first connecting rod mechanism 60 is achieved, and the first connecting rod mechanism 60 is self-locked; under the flat state 20, the first link mechanism 60 achieves self-locking, even if slight external force touches, the supporting force of the first movable supporting plate 50 on the flexible display panel 40 is larger, the self-locking state of the first link mechanism 60 is not broken, the pinch roller 61 is not subjected to external force in the direction parallel to the first movable supporting plate 50, the flexible display panel 40 is still in the flat state, and good user experience of the display device 100 in the flat state 20 can be met.

In the folded state 30, please continue to refer to fig. 4, the connecting rod 62 forms a certain angle with the plane of the first movable supporting plate 50, at this time, the connecting rod 62 has a certain supporting force on the pressing wheel 61, and the direction of the supporting force is consistent with the extending direction of the connecting rod 62, and the extending direction of the connecting rod 62 is not perpendicular to the first movable supporting plate 50, so that the acting force of the pressing wheel 61 on the first movable supporting plate 50 is reduced; in the bending state 30, the pressing wheel 61 has smaller acting force on the first movable supporting plate 50, so that the acting force of the first movable supporting plate 50 on the flexible display panel 40 is further reduced, and no dent or crease is generated on the flexible display panel 40.

Optionally, fig. 5 is a schematic partial view of a portion C of the display device provided in the embodiment shown in fig. 2, please refer to fig. 5, and further includes: the elastic component 70, the elastic component 70 is set up between pinch roller 61 and first movable supporting plate 50, the first end 71 of the elastic component 70 is fixedly connected with pinch roller 61, the second end 72 of the elastic component 70 is fixedly connected with one side of the first movable supporting plate 50 close to bending region 10;

the elastic member 70 has elastic deformation.

Specifically, as shown in fig. 5, and referring to fig. 2, in this embodiment, the display device 100 further includes an elastic member 70, the elastic member 70 is located on a side of the first movable supporting plate 50 facing away from the flexible display panel 40, and the elastic member 70 is disposed between the pressing wheel 61 and the first movable supporting plate 50, a first end 71 of the elastic member 70 is fixedly connected with the pressing wheel 61, a second end 72 of the elastic member 70 is fixedly connected with a side of the first movable supporting plate 50 adjacent to the bending region 10, and the elastic member 70 has elastic deformation; the fixed connection mode comprises, but is not limited to, detachable fixed connection and non-detachable fixed connection, wherein the detachable fixed connection comprises the fixation of parts such as a screw, a spline, a wedge pin and the like; the non-detachable fixed connection comprises welding, riveting, tenon passing, bonding and the like, and the application is not limited to the method.

Optionally, the deformation of the elastic member 70 includes compression and stretching, where the elastic member 70 is located between the pinch roller 61 and the side of the first movable supporting plate 50 near the bending region 10, and when the elastic member 70 compresses or stretches, the vertical distance between the pinch roller 61 and one end of the first movable supporting plate 50 near the bending region 10 can be adjusted, which can be understood that the compression or stretching of the elastic member 70 drives the pinch roller 61 to move back and forth on the side of the first movable supporting plate 50 away from the light emitting surface of the flexible display panel; of course, the elastic member 70 may also generate a certain tensile force on the pressing wheel, so that the pressing force of the pressing wheel 61 on the first movable supporting plate 50 can be reduced under a certain condition, and the dent or crease of the flexible display panel 40 is avoided.

The stress condition of the flexible display panel 40 in different states is analyzed below, in this embodiment, the display device 100 includes the fully folded state 30, the semi-folded state and the flattened state 20, and the force applied to the pinch roller 61 in the first link mechanism 60 is different in different states of the display device 100, which will be described below through detailed stress analysis.

When the display device 100 is in the fully folded state 30, please refer to fig. 6, fig. 6 is a partial schematic diagram of a display device D provided in the embodiment shown in fig. 4, the display device 100 is in the fully folded state 30, the elastic member 70 is in a stretched state, and has a certain tensile force F2 on the pressing wheel 61, at this time, the pressing wheel 61 is further subjected to the supporting force F1 of the connecting rod 62, and the tensile force F2 and the supporting force F1 are combined into a resultant force perpendicular to the first movable supporting plate 50, that is, the resultant force F generated by the pressing wheel 61 on the first movable supporting plate 50; compared with the situation that the elastic component 70 is not arranged, the elastic component 70 is arranged, and the elastic component 70 has a certain tensile force on the pinch roller 62, so that the acting force of the pinch roller 61 on the first movable supporting plate 50 is reduced, the acting force of the first movable supporting plate 50 on the flexible display panel 40 is further reduced, and the situation that the flexible display panel 40 is dented, folded and the like due to overlarge pressure is avoided.

Referring to fig. 7 and 8, fig. 7 is a schematic structural diagram of another display device provided in the embodiment of the present application, fig. 8 is a pressure-bearing analysis chart of a pressure roller provided in the embodiment of the present application, at this time, the pressure roller 61 is supported by the supporting force F1 of the connecting rod 62, the pressure roller 61 is also supported by the tensile force F2 of the elastic member 70, wherein f2=Δl×k, the resultant force f=f1×sina=1/2×Δl×k×sin2a, and a is an acute angle between the elastic member 70 and the connecting rod 62; the display device 100 is changed from the fully folded state 30 to the half folded state, Δl decreases, a increases, sin2a increases, the resultant force F is greatly affected by the angle a, and the resultant force F increases first; when a is more than 45 ^° Δl decreases, a increases, sin2a decreases, the resultant force F is greatly affected by the angle a, and the resultant force F decreases again; in this way, in the process of flattening the flexible display panel 40, the acting force of the pinch roller 61 on the first movable support plate 50 increases and decreases, and the acting force of the first movable support plate 50 on the flexible display panel 40 increases and decreases, so as to finally realize the acting force of the first movable support plate 50 on the flexible display panel 40The situation that the flexible display panel 40 is dented, folded and the like caused by overlarge acting force is avoided.

When the display device 100 is in the flattened state 20, please continue to refer to fig. 5, at this time, the tensile force F2 of the elastic component 70 on the pressing wheel 61 is equal to 0, the supporting force F1 of the connecting rod 62 on the pressing wheel 61 is perpendicular to the first movable supporting plate 50, at this time, the pressing wheel 61 is only supported by the supporting force F1 of the connecting rod 62, and the supporting force F1 is perpendicular to the first movable supporting plate 50, the pressing wheel 61 is not stressed in the direction parallel to the first movable supporting plate 50, and has no movable condition, so that the pressing wheel 61 is stressed in the direction parallel to the first movable supporting plate 50, and the self-locking condition of the first connecting rod mechanism 60 is achieved, and the first connecting rod mechanism 60 is self-locked; even if the first movable support plate 50 has a larger supporting force on the flexible display panel 50 due to slight external force touch, the self-locking state of the first link mechanism 60 is not broken, the pinch roller 61 is not subjected to external force in the direction parallel to the first movable support plate 50, the flexible display panel 40 is still in a flattened state, and good user experience under the flattened state 20 of the display device 100 is met.

Alternatively, as shown in FIG. 4, in the folded state 30, the link 62 is positioned on the side of the puck 61 near the bending region 10, and the hinge 63 is positioned on the side of the link 62 near the bending region 10.

Specifically, as shown in fig. 4, in the folded state 30, the link 62 is located at a side of the pinch roller 61 near the bending region 10, and the hinge 63 is located at a side of the link 62 near the bending region 10; in the case that the above relative positional relationship is satisfied, in the folded state 30, the elastic member 70 is in a compressed state, and the pressing wheel 61 will only be pulled by the elastic member 70, so that the force of the pressing wheel 61 on the first movable supporting plate 50 is reduced, and the force of the first movable supporting plate 50 on the flexible display panel 40 in the folded state 30 is further reduced, so that the occurrence of dents or creases in the flexible display panel is avoided. In addition, the above relative positional relationship between the pressing wheel 61, the hinge 63 and the connecting rod 62 can meet the requirement that the connecting rod 62 and the plane of the first movable supporting plate 50 are vertical within a certain error allowable range in the flattened state 20, and the first connecting rod mechanism 60 achieves self-locking.

Optionally, as shown in fig. 4, in the folded state 30, the connecting rod 62 forms an acute angle β with the plane of the first movable supporting plate 50 along the direction in which the second region 42 points to the first region 41.

Specifically, as shown in fig. 4, in the present embodiment, in the folded state 30, the second area 42 of the flexible display panel 40 points to the first area 41 of the flexible display panel 40, and the included angle between the connecting rod 62 and the plane of the first movable supporting plate 50 is an acute angle β, it can be understood that the included angle between the connecting rod 62 and the plane of the side of the first movable supporting plate 50 facing away from the flexible display panel 40 is an acute angle β; optionally, the acute angle β is less than 30 ^° An acute angle of (2); in this way, on the one hand, in the folded state 30, the pressing wheel 61 has a certain acting force on the first movable supporting plate 50, because the connecting rod 62 has a certain supporting force on the pressing wheel 61, and the pressing wheel 61 is also under the tensile force of the elastic component 70, when the included angle between the connecting rod 62 and the plane of the first movable supporting plate 50 is the acute angle β, the pressing wheel 61 can be subjected to the tensile force of the elastic component 70 instead of the elastic force, so that the acting force of the pressing wheel 61 on the first movable supporting plate 50 is reduced, and the situation that the pressing wheel 61 acts on the first movable supporting plate 50 is excessively large, so that the acting force of the first movable supporting plate 50 on the flexible display panel 40 is excessively large, and thus the situation that the flexible display panel 40 is dented, folded and the like is caused.

Optionally, fig. 9 is a schematic partial view of a display device C provided in the embodiment shown in fig. 2, where the first movable supporting plate 50 has an L-shaped structure, and the first movable supporting plate 50 includes a first supporting portion 51 and a second supporting portion 52; the first support portion 51 is at least partially in a plate-shaped structure, and the first support portion 51 is at least partially in contact with the flexible display panel 40; the second supporting portion 52 is located at one side of the first supporting portion 51 close to the bending region 10, and the extending directions of the first supporting portion 51 and the second supporting portion 52 are different;

the elastic member 70 is fixed to the second leg 52.

It should be noted that the embodiment shown in fig. 9 only schematically illustrates the relative positional relationship between the first branch portion 51 and the second branch portion 52, and does not represent the actual dimensions of the first branch portion 51 and the second branch portion 52.

Specifically, please refer to fig. 9, and referring to fig. 2, in the present embodiment, the first movable supporting plate 50 has an L-shaped structure, the first movable supporting plate 50 includes a first supporting portion 51 and a second supporting portion 52, and it can be understood that the first supporting portion 51 corresponds to a long side of the L-shaped structure, and the second supporting portion 52 corresponds to a short side of the L-shaped supporting portion; the first support portion 51 is at least partially of a flat plate structure, and at least part of the first support portion 51 is in contact with the flexible display panel 40; the second supporting portion 52 is located at a side of the first supporting portion 51 near the bending region 10, the first supporting portion 51 and the second supporting portion 52 are fixedly connected, and the extending directions of the first supporting portion 51 and the second supporting portion 52 are different.

Further, the elastic member 70 is fixed to the second support portion 52, optionally, the elastic member 70 is fixed to a side of the second support portion 52 away from the bending region 10, and the elastic member 70 is further configured to support the dead weight of the pressing wheel 61, so that the pressing wheel 61 is always in contact with the first support portion 51 of the first movable supporting plate 50; in this way, in the process from the folded state 30 to the flattened state 20, the acting force of the pressing wheel 61 on the first movable supporting plate 50 is variable, so that the acting force on the first movable supporting plate 50 has the best effect, and uneven phenomena such as crease, dent, warp and the like of the display panel are avoided.

Alternatively, as shown in fig. 9 with reference to fig. 2, in the flattened state 20, a side of the first branch portion 51 near the bending region 10 gradually decreases in thickness along a direction D3 perpendicular to the light emitting surface of the flexible display panel, and an end portion of the first branch portion 51 near the bending region 10 and a direction of the second region 42 pointing to the first region 41 form an acute angle.

Specifically, please refer to fig. 9, and referring to fig. 2, in the present embodiment, in the flattened state 20, the thickness of the side of the first support portion 51, which is close to the bending region 10, is gradually reduced along the direction D3 perpendicular to the light emitting surface of the flexible display panel, and the end of the first support portion 51, which is close to the bending region 10, is inclined towards the direction away from the first movable supporting plate 50, the inclined angle is an acute angle, i.e. when the display device 100 is converted from the flattened state 20 to the folded state 30, the inclined surface of the end of the first support portion 51, which is close to the bending region 10, is stressed, the force is more easily transmitted to the elastic member 70, and after the elastic member 70 is stressed, an oblique force F3 is generated to the pressing wheel 61, such that the pressing wheel 61 is in an unbalanced state in the horizontal direction, and the connecting rod 62 moves, thereby realizing the folding of the display device 100; in this way, when the end of the first branch portion 51 is disposed to have an inclined surface, and the end of the first branch portion 51 gradually decreases in size, the oblique force F3 can be further transmitted to the pinch roller 61, movement of the pinch roller 61 is achieved, and further folding of the flexible display panel 40 is achieved.

Alternatively, fig. 10 is a schematic diagram of another structure of the display device provided in the embodiment of the present application, and referring to fig. 10, the first link mechanism 60 includes at least two groups of sub-link mechanisms 64, each sub-link mechanism 64 is arranged along the first direction D1, and each sub-link mechanism 64 is located on the same side of the bending region 10.

It should be noted that, the embodiment shown in fig. 10 only schematically illustrates a schematic view in which two sets of sub-link mechanisms 64 are provided, and the two sets of sub-link mechanisms 64 are located on two sides of the display device 100 along the first direction D1, where the number of sub-link mechanisms 64 may include a plurality, which is not limited in this application.

Specifically, please continue to refer to fig. 10, and referring to fig. 4, in the present embodiment, the first link mechanism 60 includes at least two sub-link mechanisms 64, the sub-link mechanisms 64 are arranged along a first direction D1, and optionally, the first direction D1 is parallel to the light emitting surface of the flexible display panel in the flattened state 20; each sub-link mechanism 64 is located on the same side of the bending region 10, and it can be understood that, in the flattened state 20, the orthographic projections of the plurality of link mechanisms 64 in the direction perpendicular to the light-emitting surface of the flexible display panel are all located within the orthographic projection range of the first region 41 in the direction perpendicular to the light-emitting surface of the flexible display panel; the plurality of sub-link mechanisms 64 arranged in this way can generate enough acting force on the first movable supporting plate 50, and optionally, the acting force of the sub-link mechanisms 64 is arranged on two sides of the first movable supporting plate 50 along the first direction D1, so that the stress balance of two ends of the first movable supporting plate 50 can be ensured to the greatest extent.

Optionally, please continue to refer to fig. 10, further includes: auxiliary pinch roller 80, along first direction D1, auxiliary pinch roller 80 is located between two adjacent sub-link mechanisms 64, and auxiliary pinch roller 80 is fixed to a side of first movable supporting plate 50 near bending region 10.

It should be noted that the embodiment shown in fig. 10 only schematically illustrates the position of auxiliary pinch roller 80, wherein auxiliary pinch roller 80 may be disposed at other positions, which is not limited herein.

Specifically, please continue to refer to fig. 10, and referring to fig. 4, in this embodiment, the display apparatus 100 further includes an auxiliary pressing wheel 80, the auxiliary pressing wheel 80 is located between two adjacent sub-link mechanisms 64, and the auxiliary pressing wheel 80 is fixed on one side of the first movable supporting plate 50 near the bending region 10; the auxiliary pressing wheel 80 plays a certain role in acting on the first movable supporting plate 50, and the auxiliary pressing wheel 80 makes the first movable supporting plate 50 cling to one side of the flexible display panel 40 away from the light emitting surface S, and the auxiliary pressing wheel 80 plays a limiting role on the first movable supporting plate 50 in a certain range.

Optionally, please continue to refer to fig. 2, further includes: the second link mechanism 65, the first link mechanism 60 and the second link mechanism 65 are respectively positioned at two opposite sides of the bending region 10;

further comprises: the second movable supporting plate 51, the first movable supporting plate 50 and the second movable supporting plate 51 are respectively located at two opposite sides of the bending region 10.

Specifically, as shown in fig. 2, in the present embodiment, the display device 100 further includes a second link mechanism 65, where the first link mechanism 60 and the second link mechanism 65 are respectively located at two opposite sides of the bending region 10; the display device 100 further includes a second movable supporting plate 51, where the first movable supporting plate 50 and the second movable supporting plate 51 are respectively located at two opposite sides of the bending region 10; it can be understood that the flexible display panels 40 are disposed on two sides of the bending area 10, and the structures on two sides of the bending area 10 are the same, so that the first movable support plates 50 and the second movable support plates 51 corresponding to the two sides of the bending area 10 of the flexible display panel 40 have sufficient acting force, and the flexible display panel 40 will not generate uneven phenomena such as folds, dents, warpage, etc. when the folding state 30 of the display device 100 is converted into the flattened state 20.

Optionally, please continue to refer to fig. 2, further includes: a bending hinge 90, the bending hinge 90 being located between the first link mechanism 60 and the second link mechanism 65;

along a direction D3 perpendicular to the light emitting surface of the flexible display panel, the bending hinge 90 is located in the bending region 10 for assisting bending of the flexible display panel 40.

Specifically, as shown in fig. 2, in the present embodiment, a bending hinge 90 is disposed between the first link mechanism 60 and the second link mechanism 65, and the bending hinge 90 is disposed in the bending region 10 along a direction D3 perpendicular to the light emitting surface of the flexible display panel; the bending hinge 90 may assist bending the flexible display panel 40 along the bending region 10, i.e., forming a folded-in-half flexible display panel 40.

Optionally, please continue to refer to fig. 2, further includes: the bearing part 110, along the direction D3 perpendicular to the light-emitting surface of the flexible display panel, the bearing part 110 covers the second area 42, and the bearing part 110 is fixed on one side of the flexible display panel 40 away from the light-emitting surface S;

one end of the bearing portion 110 near the bending region 10 is movably connected with the first movable supporting plate 50 through an auxiliary hinge 140.

It should be noted that, the embodiment shown in fig. 2 only schematically illustrates the positional relationship between the auxiliary hinge 140 and the first movable supporting plate 50, and the bearing portion 110, and does not represent the actual dimensions.

Specifically, as shown in fig. 2, in the embodiment, the display device 100 further includes a carrying portion 110, the carrying portion 110 is located at a side of the flexible display panel 40 away from the light-emitting surface S, and the carrying portion 110 is fixedly connected with the flexible display panel 40, optionally, the manner of fixedly connecting includes gluing, mechanical fixing, and the like, and is not limited to the above manner, and the carrying portion 110 has a supporting function on the flexible display panel 40; the orthographic projection of the bearing part 110 in the direction perpendicular to the light-emitting surface of the flexible display panel covers the orthographic projection of the second area 42 in the direction perpendicular to the light-emitting surface of the flexible display panel; one end of the bearing part 110, which is close to the bending area 10, is movably connected with the first movable supporting plate 50, and optionally, is movably connected through an auxiliary hinge 140; in this way, the position of the first movable supporting plate 50 can be adjusted, and the first movable supporting plate 50 can adjust the position by itself in the process from the folded state 30 to the flattened state 20, so that the supporting effect provided by the first movable supporting plate 50 can be best, and the uneven phenomenon of the flexible display panel 40 can not occur.

Optionally, please continue to refer to fig. 2, further includes: and an auxiliary supporting plate 120, wherein the auxiliary supporting plate 120 is fixed on one side of the bearing part 110 away from the flexible display panel 40, a cavity 130 is formed between the auxiliary supporting plate 120 and the first movable supporting plate 50, the first link mechanism 60 is positioned in the cavity 130, and the hinge 63 is fixed on one side of the auxiliary supporting plate 120 close to the first movable supporting plate 50.

Specifically, as shown in fig. 2, in the present embodiment, an auxiliary supporting board 120 is disposed on a side of the carrying portion 110 away from the flexible display panel 40, the auxiliary supporting board 120 has a plate-like structure, the auxiliary supporting board 120 extends to the first area 41, and the auxiliary supporting board 120 is fixedly connected to the carrying portion 110, and optionally, the fixing manner includes gluing, mechanical fixing, and the like; a cavity 130 is formed between the auxiliary supporting plate 120 and the first supporting plate, the first link mechanism 60 is positioned in the cavity 130, and the hinge 63 of the first link mechanism 60 is fixed to the auxiliary supporting plate 120, optionally, the hinge 63 is fixed to a side of the auxiliary supporting plate 120 near the flexible display panel 40; in this manner, accessory support plate 120 is used to secure first link mechanism 60, and cavity 130 formed by accessory support plate 120 and first movable support plate 50 provides a storage space for first link mechanism 60.

Optionally, as shown in fig. 2, in the flattened state 20, along a direction D3 perpendicular to the light-emitting surface of the flexible display panel, the thickness h=d+l+d2+t of the bearing portion 110, where D is a length of the hinge 63 along the direction D3 perpendicular to the light-emitting surface of the flexible display panel, L is a length of the link 62, D2 is a radius of the pinch roller 61, and T is a thickness of the first movable supporting plate 50 along the direction D3 perpendicular to the light-emitting surface of the flexible display panel.

Specifically, as shown in fig. 2, in the present embodiment, in order to ensure that any position on the display device 100 is on the same plane in the flattened state 20, in a state that the connecting rod 62 is perpendicular to the plane on which the first movable supporting plate 50 is located, the total dimensions of the connecting rod 62 and other structures need to be such that any position on the display device 100 in the flattened state 20 is on the same plane; optionally, along a direction D3 perpendicular to the light-emitting surface of the flexible display panel, the thickness h=d+l+d2+t of the bearing portion 110, where D is a length of the hinge 63 along the direction D3 perpendicular to the light-emitting surface of the flexible display panel, L is a length of the link 62, D2 is a radius of the pinch roller 61, and T is a thickness of the first movable supporting plate 50 along the direction D3 perpendicular to the light-emitting surface of the flexible display panel; by limiting the structural dimensions, any position of one side of the flexible display panel 40 facing away from the light emitting surface is on the same plane in the flattened state 20, so that uneven phenomena such as folds, dents and warpage of the flexible display panel 40 can not occur.

Alternatively, as shown in fig. 4, the first movable supporting plate 50 has elastic deformation.

Specifically, as shown in fig. 4, in the present embodiment, the first movable supporting plate 50 may be elastically deformed to adapt to bending and flattening of the flexible display panel 40, and further reduce the acting force of the first movable supporting plate 50 on the flexible display panel 40.

Alternatively, as shown in connection with fig. 2, the elastic member 70 is a spring.

Specifically, as shown in fig. 2, in the present embodiment, the elastic member 70 may be a spring or other elastic structure, so long as the movable connection between the first link mechanism 60 and the first movable supporting plate 50 can be achieved.

According to the embodiments, the beneficial effects of the application are as follows:

While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that this application is not limited to the forms disclosed herein, but is not to be construed as an exclusive use of other embodiments, and is capable of many other combinations, modifications and environments, and adaptations within the scope of the inventive concept described herein, through the foregoing teachings or through the skill or knowledge of the relevant arts. And that modifications and variations which do not depart from the spirit and scope of the present invention are intended to be within the scope of the appended claims.

Claims

1. A display device, wherein the display device comprises a flattened state and a folded state, the display device comprising a bending region; the display device further includes:

the flexible display panel comprises a first area and a second area which are adjacent, the first area and the second area are positioned on the same side of the bending area, and the first area is positioned between the second area and the bending area;

the first movable supporting plate is positioned on one side, away from the light-emitting surface, of the flexible display panel, and covers the first area along the direction perpendicular to the light-emitting surface of the flexible display panel;

the elastic component is arranged between the pressing wheel and the first movable supporting plate, the first end of the elastic component is fixedly connected with the pressing wheel, and the second end of the elastic component is fixedly connected with one side, close to the bending area, of the first movable supporting plate;

the elastic component has elastic deformation;

in the flattened state, the connecting rod is perpendicular to the first movable support plate; in the folded state, the connecting rod and the plane where the first movable supporting plate is located form a certain angle.

2. The display device of claim 1, wherein in the collapsed state, the link is located on a side of the puck adjacent to the inflection region, and the hinge is located on a side of the link adjacent to the inflection region.

3. The display device according to claim 2, wherein in the folded state, the connecting rod forms an acute angle with a plane in which the first movable support plate is located along a direction in which the second region is directed toward the first region.

4. The display device of claim 1, wherein the first movable support plate has an L-shaped structure, the first movable support plate including a first leg and a second leg; the first support part is at least partially of a flat plate-shaped structure, and is at least partially in contact with the flexible display panel; the second support part is positioned at one side of the first support part close to the bending area, and the extending directions of the first support part and the second support part are different;

the elastic component is fixed in the second branch portion.

5. The display device according to claim 4, wherein in the flattened state, a thickness of a side of the first branch portion adjacent to the bending region in a direction perpendicular to the light-emitting surface of the flexible display panel is gradually reduced, and an end of the first branch portion adjacent to the bending region and a direction of the second region directed toward the first region form an acute angle.

6. The display device of claim 1, wherein the first linkage includes at least two sets of sub-linkages, each of the sub-linkages being arranged along a first direction and each of the sub-linkages being located on a same side of the bending region.

7. The display device according to claim 6, further comprising: the auxiliary pressing wheel is positioned between two adjacent sub-link mechanisms along the first direction, and is fixed on one side of the first movable supporting plate, which is close to the bending area.

8. The display device according to claim 1, further comprising: the first connecting rod mechanism and the second connecting rod mechanism are respectively positioned at two opposite sides of the bending area;

further comprises: the first movable supporting plate and the second movable supporting plate are respectively positioned at two opposite sides of the bending area.

9. The display device according to claim 8, further comprising: the bending hinge is positioned between the first connecting rod mechanism and the second connecting rod mechanism;

and the bending hinge is positioned in the bending area along the direction perpendicular to the light emitting surface of the flexible display panel and is used for assisting in bending of the flexible display panel.

10. The display device according to claim 1, further comprising: the bearing part is arranged along the direction perpendicular to the light-emitting surface of the flexible display panel, covers the second area and is fixed on one side of the flexible display panel, which is away from the light-emitting surface;

one end of the bearing part, which is close to the bending area, is movably connected with the first movable supporting plate through an auxiliary hinge.

11. The display device according to claim 10, further comprising: the auxiliary support plate is fixed on one side of the bearing part, which faces away from the flexible display panel, and a cavity is formed between the auxiliary support plate and the first movable support plate, the first connecting rod mechanism is positioned in the cavity, and the hinge is fixed on one side of the auxiliary support plate, which is close to the first movable support plate.

12. The display device according to claim 11, wherein in the flattened state, in a direction perpendicular to the light-emitting surface of the flexible display panel, the thickness h=d+l+d2+t of the bearing portion, where D is a length of the hinge in the direction perpendicular to the light-emitting surface of the flexible display panel, L is a length of the link itself, D2 is a radius of the pinch roller, and T is a thickness of the first movable support plate in the direction perpendicular to the light-emitting surface of the flexible display panel.

13. The display device according to claim 1, wherein the first movable support plate has an elastic deformation.

14. The display device according to claim 1, wherein the elastic member is a spring.