CN113689789A

CN113689789A - Display device

Info

Publication number: CN113689789A
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: 2021-11-23
Anticipated expiration: 2041-08-13
Also published as: CN113689789B

Abstract

The application discloses a display device, which relates to the technical field of display, and comprises a flattening state and a folding state, wherein the display device comprises a bending area; further comprising: a flexible display panel including a first region and a second region adjacent to each other; 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 close to the bending area; the first end of the connecting rod is movably connected with the pressing wheel, and the second end of the connecting rod is movably connected with the hinge; in a flattening state, the connecting rod is vertical to the plane of the first movable supporting plate, and the first connecting rod mechanism is self-locked; in a folded state, the connecting rod and the plane where the first movable supporting plate is located form a certain angle, and the first connecting rod mechanism is unlocked. This application can effectively improve unevenness such as crease, dent and warpage that produce after folding screen is folded, improves display device's quality.

Description

Display device

Technical Field

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

Background

As the flexible display technology becomes mature, a display device with a folding function (such as a folding mobile phone, a folding tablet or a folding computer) will be a big trend in the future; the display portion of these display devices having a folding function is 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 the use experience of a user is greatly improved.

At present, 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 at 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 foldable screen is in a flat state; when the display surfaces of the two plane parts form a preset angle, the folding screen is in a folding state. However, the conventional folding screen is prone to have undesirable phenomena such as whitening creases, depressions, warping and the like at the folding position, and the display effect of the folding screen is affected.

Disclosure of Invention

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

In order to solve the technical problem, the following technical scheme is adopted:

in a first aspect, the present application provides a display device comprising: the display device comprises a flattening state and a folding state, and the display device comprises a bending area; the display device further includes:

the flexible display panel comprises a first area and a second area which are adjacent, and the first area and the second area are both 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 far 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 on one side of the first movable supporting plate, which is far away from the flexible display panel; the first connecting rod mechanism comprises a pressing wheel, a connecting rod and a hinge, the pressing wheel is movably connected with one end of the first movable supporting plate close to the bending area, and the pressing wheel is in contact with one side of the first movable supporting plate away from the flexible display panel; the first end of the connecting rod is movably connected with the pressing wheel, and the second end of the connecting rod is movably connected with the hinge;

in a flattening state, the connecting rod is vertical to the first movable supporting plate; in a folded state, the connecting rod and the plane of the first movable supporting plate form a certain angle.

Compared with the prior art, the display device provided by the invention at least realizes the following beneficial effects:

according to the display device, a first movable supporting plate and a first connecting rod mechanism are arranged on one side, away from a light emitting surface, of the flexible display panel, and the first connecting rod mechanism comprises a pressing wheel, a connecting rod and a hinge; under the flattening state, the connecting rod is perpendicular to the plane of the first movable supporting plate, the first connecting rod mechanism is unlocked, at the moment, the pressing wheel only receives the supporting force of the connecting rod, the supporting force is perpendicular to the first movable supporting plate, the pressing wheel is parallel to the direction of the first movable supporting plate and does not receive force, the movable condition is not provided, even if the pressing wheel is touched by slight external force, the supporting force of the first movable supporting plate on the flexible display panel is large, the self-locking state of the first connecting rod mechanism cannot be broken, the pressing wheel cannot receive external force in the direction parallel to the first movable supporting plate, the flexible display panel cannot be deformed, the flexible display panel is still in the flattening state, and good user experience of the display device in the flattening state can be met. In a folded state, the connecting rod and the plane where the first movable supporting plate is located form a certain angle, the first connecting rod mechanism is unlocked, at the moment, the connecting rod has certain supporting force pulling force on the pressing wheel, 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 vertical to the first movable supporting plate, so that the acting force of the pressing wheel on the first movable supporting plate is reduced; under the state of buckling, the acting force holding power that the pinch roller has to first activity backup pad is less, further makes the acting force that first activity backup pad produced flexible display panel reduce, can not make flexible display panel produce dent or crease.

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 embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

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

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

FIG. 3 is a schematic structural diagram of a display device provided in an embodiment of the present application in a folded state;

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

FIG. 5 is a partial schematic view of a display device C provided in the embodiment shown in FIG. 2;

FIG. 6 is a partial schematic view of a display device D provided in the embodiment shown in FIG. 4;

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

FIG. 8 is a diagram illustrating a stress analysis of the puck according to an embodiment of the present application;

FIG. 9 is a partial schematic view of a display device C provided in the embodiment shown in FIG. 2;

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

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result. Furthermore, the term "coupled" is intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims. The same parts between the embodiments are not described in detail.

The following detailed description is to be read in connection with the drawings and the detailed description.

Fig. 1 is a schematic structural diagram of a display device provided in an embodiment of the present invention in a flattened state, fig. 2 is a cross-sectional view of the display device provided in the embodiment of fig. 1 along a-a ', fig. 3 is a schematic structural diagram of the display device provided in the embodiment of the present invention in a folded state, fig. 4 is a cross-sectional view of the display device provided in the embodiment of fig. 3 along B-B', please refer to fig. 1 to 4, the 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, wherein the flexible display panel 40 includes a first region 41 and a second region 42 that are adjacent to each other, and the first region 41 and the second region 42 are both located on the same side of the bending region 10, as shown in fig. 1, the first region 41 is 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 on one side of the flexible display panel 40 away from the light emitting surface S, and the first movable supporting plate 50 covers the first area 41 along a direction D3 perpendicular to the light emitting surface of the flexible display panel;

a first link mechanism 60, wherein the first link mechanism 60 is located at a side of the first movable supporting plate 50 away from the flexible display panel 40, and the first link mechanism 60 is used for providing a supporting force for the first movable supporting plate 50; the first link mechanism 60 comprises a pressing wheel 61, a link 62 and a hinge 63, 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 in contact 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 link 62 is perpendicular to the first movable support plate 50, and the first link 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 linkage 60 is unlocked.

It should be noted that the embodiment shown in fig. 1 only schematically shows the structural schematic diagram of the display device 100 in the flattened state 20, wherein the sizes of the bending region 10, the first region 41 and the second region 42 do not represent actual sizes; the embodiment shown in fig. 2 only schematically shows the relative positional relationship between 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 between 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 structural view of the display device 100 in a folded state 30; the embodiment shown in fig. 4 only schematically shows the relative positions of the pressing wheel 61, the link 62 and the hinge 63 in the first link mechanism 60 in the bent state of the display device 100, and does not represent actual dimensions.

Specifically, with continued reference to fig. 1 to 4, the display device 100 of the present embodiment includes a flat state 20 and a folded state 30, and has a bending region 10; it is also understood 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 the respective states can 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 both 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 supporting plate 50 located on a side of the flexible display panel 40 away from the light exit surface S, in the flattened state 20, an orthographic projection of the first movable supporting plate 50 in a direction D3 perpendicular to the light exit surface of the flexible display panel is located within an orthographic projection range of the first area 41 in a direction D3 perpendicular to the light exit surface of the flexible display panel, and the first movable supporting plate 50 supports the first area 41 of the flexible display panel 40; because the first region 41 is located between the bending region 10 and the second region 42, the first region 41 is closer to the bending region 10, when the flexible display panel 100 is bent, the bending degree of the flexible display panel 40 corresponding to the first region 41 is higher, and the first movable supporting plate 50 is arranged on the side of the first region 41 away from the light emitting surface S of the flexible display panel, so that the flexible display panel 40 can be effectively supported, and during the bending process, the flexible display panel 40 corresponding to the first region 41 can be prevented from being uneven such as folded, dented, and warped.

Further, the first link mechanism 60 is disposed on a side of the first movable supporting plate 50 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 close to the bending area 10, and the pressing wheel 61 contacts with a side of the first movable supporting plate 50 away from the flexible display panel 40 and supports the first movable supporting plate 50; the first movable supporting plate 50 can be moved by the first link mechanism 60 movably connected thereto, and when the display device 100 is in different states, the first movable supporting plate 50 can provide supports with different forces for the flexible display panel 40, and then the forces applied to the flexible display panel 40 corresponding to the first region 41 are analyzed by simulating that the flexible display panel 40 is 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 perpendicular angle includes an angle within an error tolerance range, at this time, the pressing wheel 61 is only subjected to the supporting force of the connecting rod 62, and the supporting force is perpendicular to the first movable supporting plate 50, the pressing wheel 61 is not subjected to a force in a direction parallel to the first movable supporting plate 50, and has no movable condition, so that the pressing wheel 61 is subjected to a force balance in a direction parallel to the first movable supporting plate 50, a self-locking condition of the first connecting rod mechanism 60 is achieved, and the first connecting rod mechanism 60 is self-locked; under the flattening 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 large, the self-locking state of the first link mechanism 60 cannot be broken, the pressing wheel 61 still cannot be subjected to external force in the direction parallel to the first movable supporting plate 50, the flexible display panel 40 is still in the flattening state, and good user experience under the flattening state 20 of the display device 100 can be met.

In the folded state 30, please refer to fig. 4 again, the connecting rod 62 and the plane of the first movable supporting plate 50 form a certain angle, at this time, the connecting rod 62 has a certain supporting force to the pressing wheel 61, and the direction of the supporting force is the same as the extending direction of the connecting rod 62, 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 to the first movable supporting plate 50 is reduced; in the bent state 30, the acting force of the pressing wheel 61 on the first movable supporting plate 50 is small, so that the acting force of the first movable supporting plate 50 on the flexible display panel 40 is further reduced, and the flexible display panel 40 is not dented or folded.

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

the elastic member 70 has elastic deformation.

Specifically, please refer to fig. 5 in combination with fig. 2, in this embodiment, the display device 100 further includes an elastic component 70, the elastic component 70 is located on a side of the first movable supporting plate 50 away from the flexible display panel 40, the elastic component 70 is disposed between the pressing wheel 61 and the first movable supporting plate 50, a first end 71 of the elastic component 70 is fixedly connected to the pressing wheel 61, a second end 72 of the elastic component 70 is fixedly connected to a side of the first movable supporting plate 50 close to the bending area 10, and the elastic component 70 has elastic deformation; the fixed connection mode comprises but is not limited to detachable fixed connection and non-detachable fixed connection, and the detachable fixed connection comprises that parts such as a screw rod, a spline, a wedge pin and the like are fixed together; the non-detachable fixed connection comprises welding, riveting, tenoning, bonding and the like, and the application does not limit the non-detachable fixed connection.

Optionally, the deformation of the elastic component 70 includes compression and stretching, the elastic component 70 is located between the pressing wheel 61 and one side of the first movable supporting plate 50 close to the bending area 10, and when the elastic component 70 is compressed or stretched, the vertical distance between the pressing wheel 61 and one end of the first movable supporting plate 50 close to the bending area 10 can be adjusted, and it can also be understood that the elastic component 70 is compressed or stretched to drive the pressing wheel 61 to move back and forth on one side of the first movable supporting plate 50 away from the light-emitting surface of the flexible display panel; of course, the elastic component 70 can also generate a certain pulling force on the pressing wheel, and under certain conditions, the pressure of the pressing wheel 61 on the first movable supporting plate 50 can be reduced, so as to avoid the flexible display panel 40 from generating dents or creases.

In the present embodiment, the display device 100 includes a fully folded state 30, a half folded state and a flattened state 20, and the pressing wheels 61 in the first linkage 60 of the display device 100 are subjected to different forces in different states, which will be described in detail below through a force analysis.

When the display device 100 is in the fully folded state 30, please refer to fig. 6, where fig. 6 is a partial schematic view of the display device D provided in the embodiment shown in fig. 4, when the display device 100 is in the fully folded state 30, the elastic component 70 is in the stretched state, and has a certain pulling 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 pulling force F2 and the supporting force F1 are combined into a resultant force perpendicular to the first movable support plate 50, that is, the resultant force F generated by the pressing wheel 61 on the first movable support plate 50; compare in not setting up elastomeric element 70, be provided with elastomeric element 70's condition, elastomeric element 70 has certain pulling force to pinch roller 62 for pinch roller 61 reduces to first movable support plate 50's effort, further makes first movable support plate 50 reduce to flexible display panel 40's effort, avoids the too big flexible display panel 40 condition such as indent and crease that causes of pressure to appear.

When the display device 100 is in the half-folded state, please refer to fig. 7 and 8, where fig. 7 is another schematic structural diagram of the display device provided in the present embodiment, fig. 8 is a diagram illustrating stress analysis of the pressing wheel provided in the present embodiment, at this time, the pressing wheel 61 is subjected to the supporting force F1 of the connecting rod 62, and the pressing wheel 61 is further subjected to the pulling force F2 of the elastic component 70, where F2 is Δ L K, the resultant force F1 is sina is 1/2 Δ L K sin2a, and a is an acute angle of an included angle between the elastic component 70 and the connecting rod 62; the display device 100 is changed from the fully folded state 30 to the half folded state, Δ L is reduced, a is increased, sin2a is increased, the influence of the angle a on the resultant force F is large, and the resultant force F is increased firstly; when a > 45^°Δ L decreases, a increases, sin2a decreases, the resultant force F is greatly affected by the angle a, and the resultant force F decreases again; so, at the flat in-process of flexible display panel 40, pinch roller 61 reduces after increasing to the effort of first movable support plate 50, and first movable support plate 50 reduces after increasing to the effort of flexible display panel 40, finally realizes that first movable support plate 50 reduces to the effort of flexible display panel 40, avoids the too big flexible display panel 40 condition such as indent and crease that causes of effort.

When the display device 100 is in the flattened state 20, please continue to refer to fig. 5, at this time, a pulling force F2 of the elastic component 70 on the pressing wheel 61 is equal to 0, a supporting force of the connecting rod 62 on the pressing wheel 61 is F1, and the supporting force F1 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 subjected to a force in a direction parallel to the first movable supporting plate 50, and has no movable condition, so that the pressing wheel 61 is stressed in a direction parallel to the first movable supporting plate 50 in a balanced manner, and a 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 display device 100 is slightly touched by external force, because the first movable supporting plate 50 has a large supporting force for the flexible display panel 50, the self-locking state of the first link mechanism 60 cannot be broken, the pressing wheel 61 still cannot be subjected to the external force in the direction parallel to the first movable supporting plate 50, and the flexible display panel 40 is still in the flat state, so that the good user experience of the display device 100 in the flat state 20 is met.

Alternatively, as shown in FIG. 4, in folded state 30, the connecting rods 62 are located on the side of the pressing wheels 61 close to the bending area 10, and the hinges 63 are located on the side of the connecting rods 62 close to the bending area 10.

Specifically, as shown in fig. 4, in the folded state 30, the connecting rod 62 is located on one side of the pressing wheel 61 close to the bending region 10, and the hinge 63 is located on one side of the connecting rod 62 close to the bending region 10; under the condition that satisfies above relative position relation, under fold condition 30, elastic component 70 is in the state of compression, and pinch roller 61 just can reduce pinch roller 61 to the effort that receives elastic component 70 to first movable support plate 50, further reduces under fold condition 30, and first movable support plate 50 avoids making flexible display panel produce dent or crease to flexible display panel's effort to flexible display panel 40. In addition, the relative position relationship among the pressing wheel 61, the hinge 63 and the connecting rod 62 can meet the requirement that the connecting rod 62 is perpendicular to the plane of the first movable supporting plate 50 within a certain error allowable range in the flattening state 20, and the first link mechanism 60 achieves self-locking.

Alternatively, as shown in fig. 4, in the folded state 30, the link 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 folded state 30, in a direction that the second region 42 of the flexible display panel 40 points to the first region 41 of the flexible display panel 40, an included angle between the connecting rod 62 and a plane of the first movable supporting plate 50 is an acute angle β, and it can be understood that an included angle between the connecting rod 62 and a plane of a side of the first movable supporting plate 50 away from the flexible display panel 40 is an acute angle β; optionally, the acute angle β is less than 30^°Acute angle of (d); thus, on the one hand, in folded state 30, pressing wheel 61 has a certain acting force on first movable supporting plate 50, since connecting rod 62 has a certain supporting force on pressing wheel 61, and pressing wheel 61 is still under the pulling force of elastic component 70, when the included angle between connecting rod 62 and the plane of first movable supporting plate 50 is acute angle β, pressing wheel 61 can be under the pulling force of elastic component 70, but notIt is elasticity, just can make the effort that pinch roller 61 acted on first movable supporting plate 50 reduce, avoid pinch roller 61 to act on the effort on first movable supporting plate 50 too big, make first movable supporting plate 50 too big to the effort of flexible display panel 40, cause the flexible display panel 40 to appear the condition such as indent and crease.

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

the elastic member 70 is fixed to the second branch portion 52.

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

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

Further, the elastic component 70 is fixed to the second branch portion 52, optionally, the elastic component 70 is fixed to a side of the second branch portion 52 away from the bending region 10, and the elastic component 70 is further configured to support the self weight of the pressing wheel 61, so that the pressing wheel 61 is always in contact with the first branch 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 is the best effect, and unevenness such as crease, dent, warpage and the like of the display panel is avoided.

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

Specifically, with reference to fig. 9 and fig. 2, in the flattened state 20, a thickness of one side of the first branch 51 near the bending region 10 is gradually reduced along a direction D3 perpendicular to the light-emitting surface of the flexible display panel, and one end of the first branch 51 near the bending region 10 is inclined in a direction away from the first movable supporting plate 50, where the inclined angle is an acute angle, that is, when the display device 100 is converted from the flattened state 20 to the folded state 30, an inclined surface of one end of the first branch 51 near the bending region 10 is stressed, and the force is more easily transmitted to the elastic component 70, and after the elastic component 70 is stressed, an inclined force F3 is generated on the pressing wheel 61, so that the pressing wheel 61 is in an unbalanced state in the horizontal direction, and the connecting rod 62 moves, thereby achieving folding of the display device 100; in this way, when the end of the first branch portion 51 is disposed on the inclined surface, and the size of the end of the first branch portion 51 is gradually reduced, the oblique force F3 can be further transmitted to the pinch roller 61, the movement of the pinch roller 61 is realized, and the folding of the flexible display panel 40 is further realized.

Alternatively, fig. 10 is another structural schematic diagram of the display device according to the embodiment of the disclosure, please refer to fig. 10, in which the first link mechanism 60 includes at least two sets 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 area 10.

It should be noted that the embodiment shown in fig. 10 only schematically illustrates a schematic diagram 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, wherein the number of the sub-link mechanisms 64 may include a plurality, and the application is not limited thereto.

Specifically, with reference to fig. 10 and 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 also 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 range of the orthographic projection of the first area 41 in the direction perpendicular to the light-emitting surface of the flexible display panel; the plurality of sub-link mechanisms 64 thus provided can generate sufficient acting force to the first movable supporting plate 50, and optionally, the acting force of the sub-link mechanisms 64 is provided on both sides of the first movable supporting plate 50 in the first direction D1, so that the two ends of the first movable supporting plate 50 can be maximally stressed in a balanced manner.

Optionally, please continue to refer to fig. 10, which further includes: and the auxiliary pressing wheel 80 is positioned between two adjacent sub-link mechanisms 64 along the first direction D1, and the auxiliary pressing wheel 80 is fixed on one side of the first movable supporting plate 50 close to the bending area 10.

It should be noted that the embodiment shown in fig. 10 only schematically illustrates the position of the auxiliary roller 80, wherein the auxiliary roller 80 can be disposed at other positions, and the application is not limited thereto.

Specifically, referring to fig. 10 and fig. 4, in this embodiment, the display device 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 close to the bending area 10; the auxiliary pressing wheel 80 exerts a certain acting force on the first movable supporting plate 50, the auxiliary pressing wheel 80 enables the first movable supporting plate 50 to be tightly attached to one side, away from the light emitting surface S, of the flexible display panel 40, and the auxiliary pressing wheel 80 plays a limiting role in limiting the first movable supporting plate 50 within a certain range.

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

further comprising: 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, and the first link mechanism 60 and the second link mechanism 65 are respectively located at two opposite sides of the bending area 10; the display device 100 further comprises a second movable support plate 51, wherein the first movable support plate 50 and the second movable support 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 both sides of the bending region 10, and the structures on both sides of the bending region 10 are the same, so that the first movable support plate 50 and the second movable support plate 51 corresponding to both sides of the bending region 10 of the flexible display panel 40 have sufficient acting force, and when the folding state 30 of the display device 100 is converted into the flattening state 20, the flexible display panel 40 does not generate unevenness such as creases, dents, and warps.

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

the bending hinge 90 is located in the bending region 10 along a direction D3 perpendicular to the light emitting surface of the flexible display panel, and is used 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 the flexible display panel 40 to bend along the bending region 10, i.e. to form a double-folded flexible display panel 40.

Optionally, please continue to refer to fig. 2, further comprising: the bearing part 110, along a 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 a side of the flexible display panel 40 departing from the light emitting surface S;

one end of the bearing part 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 shows the position relationship between the auxiliary hinge 140 and the first movable supporting plate 50 and the carrying portion 110, and does not represent actual dimensions.

Specifically, please refer to fig. 2, in the embodiment, the display device 100 further includes a carrying portion 110, the carrying portion 110 is located on a side of the flexible display panel 40 away from the light emitting surface S, and the carrying portion 110 is fixedly connected to the flexible display panel 40, optionally, the fixing manner includes gluing, mechanical fixing, and the like, and is not limited to the above manner, and the carrying portion 110 supports 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 close to the bending area 10 is movably connected with the first movable supporting plate 50, optionally, through an auxiliary hinge 140; in this way, the position of the first movable supporting plate 50 can be adjusted, and in the process from the folded state 30 to the flattened state 20, the position of the first movable supporting plate 50 is adjusted by itself, so that the supporting effect provided by the first movable supporting plate 50 is best, and the flexible display panel 40 is not uneven.

Optionally, please continue to refer to fig. 2, further comprising: the auxiliary support plate 120 is fixed to a side of the supporting portion 110 away from the flexible display panel 40, a cavity 130 is formed between the auxiliary support plate 120 and the first movable support plate 50, the first link mechanism 60 is located in the cavity 130, and the hinge 63 is fixed to a side of the auxiliary support plate 120 close to the first movable support plate 50.

Specifically, please refer to fig. 2, in this embodiment, an auxiliary support plate 120 is disposed on a side of the carrying portion 110 away from the flexible display panel 40, the auxiliary support plate 120 is a plate-shaped structure, the auxiliary support plate 120 extends to the first area 41, and the auxiliary support plate 120 is fixedly connected to the carrying portion 110, 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 located 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 close to the flexible display panel 40; as such, the subsidiary support plate 120 serves to fix the first link mechanism 60, and the cavity 130 formed by the subsidiary support plate 120 and the first movable support plate 50 provides a storage space for the 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, a thickness H of the supporting portion 110 is D + L + D2+ T, 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 connecting rod 62 itself, D2 is a radius of the pressing wheel 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 located on the same plane in the flat state 20, in a state where the connecting rod 62 is perpendicular to the plane of the first movable supporting plate 50, the total size of the connecting rod 62 and other structures is required to be such that any position on the display device 100 in the flat state 20 is located on the same plane; optionally, in a direction D3 perpendicular to the light-emitting surface of the flexible display panel, the thickness H of the supporting portion 110 is D + L + D2+ T, where D is the length of the hinge 63 in the direction D3 perpendicular to the light-emitting surface of the flexible display panel, L is the length of the link 62 itself, D2 is the radius of the pressing wheel 61, and T is the thickness of the first movable supporting plate 50 in the direction D3 perpendicular to the light-emitting surface of the flexible display panel; by limiting the sizes of the structures, any position of one side of the flexible display panel 40 away from the light emitting surface is in the same plane in the flattened state 20, and the flexible display panel 40 is not subjected to unevenness such as creases, dents, and warping.

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

Specifically, referring to fig. 4, in the present embodiment, the first movable supporting plate 50 can be elastically deformed to adapt to bending and flattening of the flexible display panel 40, and the acting force of the first movable supporting plate 50 on the flexible display panel 40 can be reduced.

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

Specifically, as shown in fig. 2, in the present embodiment, the elastic component 70 may be a spring or other elastic structure, as long as the first link mechanism 60 and the first movable supporting plate 50 can be movably connected.

According to the embodiments, the application has the following beneficial effects:

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

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

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 a direction perpendicular to the light-emitting surface of the flexible display panel;

the first connecting rod mechanism is positioned on one side, away from the flexible display panel, of the first movable supporting plate; the first connecting rod mechanism comprises a pressing wheel, a connecting rod and a hinge, the pressing wheel is movably connected with one end of the first movable supporting plate close to the bending area, and the pressing wheel is in contact with one side of the first movable supporting plate 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 flattening state, the connecting rod is vertical to the first movable supporting plate; under 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 according to claim 1, further comprising: 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 member has an elastic deformation.

3. The display device as claimed in claim 1, wherein in the folded state, the links are located on a side of the pinch roller near the bending region, and the hinges are located on a side of the links near the bending region.

4. A display device as claimed in claim 3, wherein in the folded state, the link is at an acute angle to the plane of the first movable support plate in a direction in which the second region is directed towards the first region.

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

the elastic member is fixed to the second branch portion.

6. The display device according to claim 5, wherein in the flattened state, a thickness of a side of the first leg portion adjacent to the bending region in a direction perpendicular to a light emitting surface of the flexible display panel is gradually reduced, and an end portion of the first leg portion adjacent to the bending region forms an acute angle with a direction of the second region pointing to the first region.

7. The display device according to claim 1, wherein the first linkage comprises at least two sets of sub-linkages, each sub-linkage is arranged along a first direction, and each sub-linkage is located on the same side of the bending region.

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

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

10. The display device according to claim 9, further comprising: a bending hinge located between the first linkage and the second linkage;

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

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

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

12. The display device according to claim 11, further comprising: the auxiliary supporting plate is fixed on one side, away from the flexible display panel, of the bearing portion, a cavity is formed between the auxiliary supporting plate and the first movable supporting plate, the first connecting rod mechanism is located in the cavity, and the hinge is fixed on one side, close to the first movable supporting plate, of the auxiliary supporting plate.

13. The display device as claimed in claim 12, wherein in the flattened state, the thickness H of the supporting portion is D + L + D2+ T in a direction perpendicular to the light-emitting surface of the flexible display panel, 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, D2 is a radius of the pressing roller, and T is a thickness of the first movable supporting plate in the direction perpendicular to the light-emitting surface of the flexible display panel.

14. The display device according to claim 1, wherein the first movable supporting plate has elastic deformation.

15. The display device according to claim 2, wherein the elastic member is a spring.