CN114898663A

CN114898663A - Display device

Info

Publication number: CN114898663A
Application number: CN202210559450.9A
Authority: CN
Inventors: 周珊珊; 王留洋
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-08-12
Anticipated expiration: 2042-05-19
Also published as: CN114898663B

Abstract

The application discloses display device includes: the screen body comprises a display surface and a non-display surface which are oppositely arranged; in the direction perpendicular to the display surface and pointing to the non-display surface, the screen body comprises a winding starting end and a winding tail end which are oppositely arranged; the supporting layer is arranged on one side of the non-display surface; the magnets are arranged on the partial surface of one side, away from the screen body, of the supporting layer and are arranged side by side along the direction that the winding starting end points to the winding tail end; the supporting layer can be attracted by the magnets, and after the supporting layer is wound from the winding starting end, all the magnets are located on the supporting layer of the innermost circular screen body. Through the mode, the gap between the adjacent screen bodies can be reduced after winding.

Description

Display device

Technical Field

The application belongs to the technical field of display, and particularly relates to a display device.

Background

With the development of display technology, rollable display devices have come to be produced. The display device capable of being wound can adjust the size at will according to display requirements, and can reduce the space occupied by the display device in the storage and carrying processes.

However, in the current rollable display device, a certain gap exists between adjacent turns of the screen body after being rolled, and the gap will cause the screen body to occupy a large rolling space and cause severe rolling stress accumulation.

Disclosure of Invention

The application provides a display device, which can reduce the gap between adjacent screen bodies after winding.

In order to solve the technical problem, the application adopts a technical scheme that: provided is a display device including: the screen body comprises a display surface and a non-display surface which are oppositely arranged; in the direction perpendicular to the display surface and pointing to the non-display surface, the screen body comprises a winding starting end and a winding tail end which are oppositely arranged; the supporting layer is arranged on one side of the non-display surface; the magnets are arranged on the partial surface of one side, away from the screen body, of the supporting layer and are arranged side by side along the direction that the winding starting end points to the winding tail end; the supporting layer can be attracted by the magnets, and after the supporting layer is wound from the winding starting end, all the magnets are located on the supporting layer of the innermost circular screen body.

Being different from the prior art situation, the beneficial effect of this application is: the supporting layer deviates from one side of the screen body and is provided with a plurality of magnets, and the supporting layer can be attracted by the plurality of magnets. And after the screen body is wound from the winding starting end, the supporting layer positioned on the non-display surface of the screen body is wound along with the screen body. At the moment, all the magnets are positioned on the supporting layer at the innermost circle, the plurality of magnets are equivalent to the center of the wound screen body, and the plurality of magnets can play a good magnetic adsorption role on the supporting layer after the periphery is wound, so that the gap between the adjacent circles of the supporting layers is reduced, the occupied size of the winding space of the screen body is reduced, the curling stress on the screen body is reduced, and the service life of the display device is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic diagram of a display device according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of one embodiment taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the display device of FIG. 1 in a rolled configuration according to a later embodiment;

FIG. 4a is a schematic structural view of another embodiment of the plurality of magnets of FIG. 1;

FIG. 4b is a schematic structural diagram of an embodiment of FIG. 4a when two adjacent magnets are attached to each other;

FIG. 4c is a schematic structural view of another embodiment of the plurality of magnets of FIG. 1;

FIG. 5 is a schematic structural diagram of another embodiment of a display device according to the present application;

FIG. 6 is a schematic view of the display device of FIG. 5 in a rolled configuration according to a later embodiment;

FIG. 7 is a schematic structural diagram of another embodiment of a display device according to the present application;

FIG. 8 is a schematic view of the display device of FIG. 7 in a rolled configuration according to a later embodiment;

FIG. 9 is a schematic top view of one embodiment of the shield and magnet of FIG. 1.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of a display device of the present application, and fig. 2 is a schematic cross-sectional structure of the embodiment taken along a line a-a in fig. 1. The display device may be a rollable OLED, Micro-LED display device, or the like, which specifically includes a screen body, a support layer, and a plurality of magnets 10, wherein the screen body and the support layer are illustrated in fig. 1 in a one-layer structure for convenience of illustration.

Specifically, as shown in fig. 2, the screen body 12 includes a display surface 120 and a non-display surface 122 which are oppositely disposed; and in a direction perpendicular to the display surface 120 and pointing to the non-display surface 122 (i.e., a direction marked as X in fig. 2), the screen body 12 includes a winding start end 124 and a winding end 126 which are oppositely arranged, and the screen body 12 can start winding from the winding start end 124. Optionally, the screen body 12 includes a flexible substrate, a driving circuit layer, a light emitting layer, and an encapsulation layer, which are sequentially stacked, and a side of the flexible substrate facing away from the encapsulation layer may be regarded as the non-display surface 122, and a side of the encapsulation layer facing away from the flexible substrate may be regarded as the display surface 120.

The support layer 14 is disposed on the non-display surface 122 side of the panel 12. Alternatively, the material of the supporting layer 14 may be metal, such as stainless steel; the outer edge of the orthographic projection of the support layer 14 on the screen body 12 may coincide with the outer edge of the screen body 12. Alternatively, the supporting layer 14 may be provided with a plurality of hollowed-out areas, and the hollowed-out areas may be circular, square, or the like; and the support layer 14 may form a net-like structure. This design may reduce the winding stress of the support layer 14 during winding.

A plurality of magnets 10 are arranged on the side of the supporting layer 14, which faces away from the screen body 12; alternatively, the plurality of magnets 10 may be fixedly disposed on the supporting layer 14 by an adhesive or welding. And the plurality of magnets 10 are arranged side by side in a direction (i.e., a direction indicated as X in fig. 1) in which the winding start end 124 points to the winding end 126; wherein the supporting layer 14 can be attracted by the magnets 10, and after winding from the winding start end 124, all the magnets 10 are located on the supporting layer 14 of the innermost coil screen body, as shown in fig. 3 in particular.

In the above design, after the screen body 12 is wound from the winding start end 124, the support layer 14 on the non-display surface 122 of the screen body 12 is wound together with the screen body 12. At this time, all the magnets 10 are located on the support layer 14 at the innermost circle, the plurality of magnets 10 are equivalent to the center of the screen body 12 after winding, and the plurality of magnets 10 can play a good magnetic adsorption role on the support layer 14 after peripheral winding, so that the gap between the support layers 14 of adjacent circles is reduced, further the gap between the screen bodies 12 of adjacent circles is reduced, the occupied space of the screen body 12 and the curling stress on the screen body 12 are reduced, and the service life of the display device is prolonged.

With reference to fig. 1, in a direction (i.e., a direction marked as X in fig. 1) in which the winding start end 124 points to the winding end 126, an edge of the side of the magnet 10 facing the support layer (i.e., an upper side edge of the magnet 10 closest to the winding start end 124 in fig. 1) closest to the winding start end 124 is flush with an edge of the winding start end 124. The design can reduce the probability of warping and breakage of the winding starting end 124 in the winding process, so as to prolong the service life of the display device.

Alternatively, in the present embodiment, a magnetic attraction force is provided between two adjacent magnets 10, and after winding from the winding start end 124, the mutually opposite side surfaces of two adjacent magnets 10 are attached to each other by the magnetic attraction force (as shown in fig. 3). This design may allow for tighter bonding between adjacent magnets 10 after winding. For example, as shown in fig. 1, in a direction in which the winding start end 124 points to the winding end 126 (i.e., a direction indicated as X in fig. 1), the magnets 10 include N poles and S poles that are oppositely disposed, and the N pole of one magnet 10 is adjacent to and oppositely disposed with respect to the S pole of another adjacent magnet 10, so that the side surfaces of the two adjacent magnets 10 can be attached to each other by a magnetic attraction force after winding.

Preferably, referring to fig. 1 and fig. 2, two adjacent magnets 10 are connected to a side close to the supporting layer 14; i.e. adjacent magnets 10 are in contact with each other on the side close to the supporting layer 14 without a gap. By the design mode, after the screen body 12 is wound from the winding starting end 124, the screen body 12 between two adjacent magnets 10 cannot generate the phenomena of bulging and the like, so that the probability of damage to the screen body 12 is reduced, and the service life of the screen body 12 is prolonged.

Alternatively, as shown in fig. 1, the width of the magnet 10 gradually decreases in a direction away from the non-display surface; for example, the magnet 10 may now form a prismoid structure. The design mode is simple in structure and easy to obtain.

Alternatively, as shown in fig. 4a, fig. 4a is a schematic structural view of another embodiment of the plurality of magnets in fig. 1. One magnet 10 of two adjacent magnets 10 comprises a first side surface 100, the other magnet 10 of the two adjacent magnets comprises a second side surface 102, and the first side surface 100 and the second side surface 102 are opposite and adjacent; wherein, a first protrusion 104 is arranged on the first side 100, and a first recess 106 matched with the first protrusion 104 is arranged on the second side 102; after being wound from the winding start end 124, the first protrusion 104 is embedded in the first recess 106. In the above design, the relative position between two adjacent magnets 10 can be better kept fixed after winding by introducing the first protrusion 104 and the first recess 106.

Further, as shown in fig. 4b, fig. 4b is a schematic structural diagram of an embodiment when two adjacent magnets in fig. 4a are attached to each other. After being wound from the winding start end 124, the outer wall of the first protrusion 104 abuts against the inner wall of the adjacent first recess 106. The design mode can enable the contact area between two adjacent magnets 10 to be larger after winding, and the position between two adjacent magnets 10 can be kept fixed better.

It should be noted that only one first protrusion 104 is schematically shown on the first side 100 in fig. 4 a; it is understood that in other embodiments, a plurality of first protrusions 104 may be disposed on the first side 100, and a plurality of first recesses 106 may be disposed on the corresponding second side 102; after winding from the winding start end 124, a first protrusion 104 is embedded in a first recess 106.

Further, as shown in fig. 4a, all the magnets 10 have the same shape, and each magnet 10 has two sides which are oppositely disposed in the direction from the winding start end 124 to the winding end 126, one of the two sides being provided with the first protrusion 104, and the other of the two sides being provided with the first recess 106. This design may reduce the complexity of the process used to manufacture the magnet 10.

Of course, in other embodiments, the plurality of magnets 10 may have other configurations. Fig. 4c is a schematic structural view of another embodiment of the plurality of magnets of fig. 1, as shown in fig. 4 c. The plurality of magnets 10 are divided into two types, a first type magnet 10a and a second type magnet 10 b. The first-type magnets 10a and the second-type magnets 10b are alternately arranged in the direction from the winding start end 124 to the winding end 126; and the first type magnet 10a is provided with first recesses 106 at both sides in the direction from the winding start end 124 to the winding end 126, respectively, and the second type magnet 10b is provided with first protrusions 104 at both sides in the direction from the winding start end 124 to the winding end 126, respectively.

Referring to fig. 3 again, after winding from the winding start end 124, the side surfaces of the adjacent magnets 10 are attached to each other to form a hollow cylinder; the display device also comprises a rotatable shaft 16 fixedly connected with the winding starting end 124; for example, the rotating shaft 16 can be directly fixedly connected to the magnet 10 at the winding start end 124, and since the magnet 10 is fixedly connected to the winding start end 124, the rotating shaft 16 is fixedly connected to the winding start end 124. Alternatively, as shown in fig. 1, one magnet 10 at the winding start end 124 includes an abutting surface 108 at a side away from the screen body, the abutting surface 108 and the outer wall of the rotating shaft 16 may be fixedly connected by an adhesive member or the like, and no adhesive member is disposed between the magnet 10 at the other positions and the outer wall of the rotating shaft 16, so that the rotating shaft 16 can easily drive the whole screen body 12 to start winding by the magnet 10 fixedly connected therewith after rotating. Further, after the screen body 12 is wound from the winding start end 124, the inner wall of the hollow cylinder formed by the plurality of magnets 10 is attached to the outer wall of the rotating shaft 16 (as shown in fig. 3). In the above design, the winding process of the subsequent driving panel 12 can be simplified by introducing the rotating shaft 16.

Alternatively, the shaft 16 can be attracted to the magnet 10, for example, the shaft 16 may be made of iron or the like. The design mode can ensure that the magnet 10 and the rotating shaft 16 can be tightly attached after being wound so as to effectively control the winding radius of the screen body 12 after being wound.

Alternatively, the hollow cylinder formed by the plurality of magnets 10 may be a cylinder, an elliptical cylinder, etc., and the corresponding rotating shaft 16 may also be designed as a cylinder, an elliptical cylinder, etc., as long as it is ensured that the outer surface of the rotating shaft 16 can be attached to the inner surface of the hollow cylinder after winding.

Of course, in other embodiments, the magnet 10 and the shaft 16 may be designed in other ways. For example, as shown in fig. 5, fig. 5 is a schematic structural diagram of another embodiment of the display device of the present application. The plurality of magnets 10 are arranged at intervals in the direction from the winding end 126 at the winding start end 124. The display device provided by the present application further comprises a rotating shaft 16 fixedly connected with the winding start end 124; wherein, the outer wall of the rotating shaft 16 is provided with a plurality of recesses 160 arranged at intervals, as shown in fig. 6, fig. 6 is a schematic structural view of the display device in fig. 5 winding the latter embodiment. After winding from the winding start end 124, a magnet 10 is inserted into a corresponding one of the recesses 160. This design may allow for a tighter fit between the magnet 10 and the shaft 16.

Alternatively, as shown in fig. 5, in the direction in which the winding start end 124 points to the winding end 126, the edge of the magnet 10 closest to the winding start end 124 is flush with the edge of the winding start end 124; at this time, the rotating shaft 16 may be directly fixedly connected with one of the magnets 10 closest to the winding start end 124 by an adhesive member or the like, and the magnet 10 is fixedly connected with the winding start end 124, so that the rotating shaft 16 and the winding start end 124 are fixedly connected in an indirect manner. That is, the magnet 10 closest to the winding start end 124 is always located in the corresponding recess 160 before and after winding, which reduces the difficulty of fixing the connection between the rotating shaft 16 and the winding start end 124.

Of course, in other embodiments, in a direction in which the winding start end 124 points to the winding end 126, the edge of the magnet 10 closest to the winding start end 124 is disposed non-flush with the edge of the winding start end 124, and the winding start end 124 may protrude with respect to the magnet 10; at this time, the rotation shaft 16 positioned around the concave portion 160 may be fixedly coupled directly to the protruding winding-start end 124 by an adhesive member or the like.

Alternatively, the shaft 16 can be attracted to the magnet 10; for example, the shaft 16 may be formed of iron or the like that is attracted to the magnet 10. This design allows for a tighter fit between the shaft 16 and the magnet 10 during winding.

Still alternatively, as shown in fig. 6, after winding from the winding start end 124, the outer surface of the magnet 10 is conformed to the inner surface of the recess 160. This design may reduce the probability of magnet 10 disengaging from recess 160.

In the above two embodiments, after winding from the winding start end 124, the side surfaces of the adjacent magnets 10 are attached to each other to form a hollow structure. As shown in fig. 7 and 8, fig. 7 is a schematic structural view of another embodiment of the display device of the present application, and fig. 8 is a schematic structural view of the display device of fig. 7 wound in the latter embodiment. After winding from the winding start end 124, the side surfaces of the adjacent magnets 10 are attached to each other to form a solid cylinder. The design mode can ensure that a rotating shaft does not need to be additionally introduced into the display device, the subsequent driving source can be directly connected with the magnet 10, and the magnet 10 is driven to rotate to realize winding. Alternatively, as shown in fig. 7, the magnet 10 may be a pyramid or the like.

Referring to fig. 9, fig. 9 is a schematic top view of an embodiment of the screen and the magnet of fig. 1. The extension length D1 of magnet 10 is the same as the extension length D2 of panel 12 in the direction perpendicular to winding start 124 to winding end 126 (i.e., the direction marked Y in fig. 9). The design can make the stress of the screen body 12 in the direction perpendicular to the winding starting end 124 to the winding end 126 more balanced, and the winding effect is better. Of course, in other embodiments, the extension length D1 of the magnet 10 in the direction perpendicular to the winding start end 124 to the winding end 126 may be greater than the extension length D2 of the panel 12.

In addition, referring to fig. 2 again, the display device provided in the present application may further include other structures; for example, the side of the screen body 12 facing away from the supporting layer 14 may further be stacked with a polarizing layer 18 and a cover plate 11, and the polarizing layer 18 and the cover plate 11 may be fixedly connected by an adhesive layer. For another example, a support film 13 may be stacked between the screen body 12 and the support layer 14, and the support film 13 and the support layer 14 may be fixedly connected by an adhesive layer.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims

1. A display device, comprising:

the screen body comprises a display surface and a non-display surface which are oppositely arranged; in the direction perpendicular to the display surface and pointing to the non-display surface, the screen body comprises a winding starting end and a winding tail end which are oppositely arranged;

the supporting layer is arranged on one side of the non-display surface;

the magnets are arranged on the partial surface of one side, away from the screen body, of the supporting layer and are arranged side by side along the direction that the winding starting end points to the winding tail end; the supporting layer can be attracted by the magnets, and after the supporting layer is wound from the winding starting end, all the magnets are located on the supporting layer of the innermost circular screen body.

2. The display device according to claim 1,

in a direction in which the winding start end points to the winding end, an edge of a side of the magnet facing the support layer, which is closest to the winding start end, is flush with an edge of the winding start end.

3. The display device according to claim 1,

the two adjacent magnets have magnetic attraction, and after the two adjacent magnets are wound from the winding starting end, the opposite side surfaces of the two adjacent magnets are mutually attached under the action of the magnetic attraction;

preferably, two adjacent magnets are connected at one side close to the support layer.

4. The display device according to claim 3,

one of the two adjacent magnets comprises a first side surface, the other of the two adjacent magnets comprises a second side surface, and the first side surface and the second side surface are opposite and are arranged adjacently;

the first side surface is provided with a first bulge, and the second side surface is provided with a first recess matched with the first bulge; after the winding is carried out from the winding starting end, the first bulge is embedded into the first recess;

preferably, after winding from the winding start end, the outer wall of the first protrusion is attached to the inner wall of the adjacent first recess.

5. The display device according to claim 4,

all the magnets are identical in shape, and each magnet comprises two sides which are oppositely arranged in the direction from the winding starting end to the winding tail end, one of the two sides is provided with the first protrusion, and the other of the two sides is provided with the first recess.

6. The display device according to claim 3,

and after the winding is carried out from the winding starting end, the side surfaces of the adjacent magnets are mutually attached to form a solid cylinder.

7. The display device according to claim 3,

after winding from the winding starting end, the side surfaces of the adjacent magnets are mutually attached to form a hollow cylinder; the display device further includes:

the rotating shaft is fixedly connected with the winding starting end, and after the winding starting end winds, the inner wall of the hollow cylinder is attached to the outer wall of the rotating shaft;

preferably, the shaft is capable of being attracted by the magnet.

8. The display device according to claim 1, further comprising:

the rotating shaft is fixedly connected with the winding starting end;

the outer wall of the rotating shaft is provided with a plurality of concave parts which are arranged at intervals, and the magnets are arranged at intervals; one of the magnets is fitted into one of the recesses after winding from the winding start end.

9. The display device according to claim 8,

after winding from the winding start end, the outer surface of the magnet is attached to the inner surface of the recess.

10. The display device according to any one of claims 1 to 3 or 6 to 9,

the extending length of the magnet is the same as that of the screen body in the direction perpendicular to the winding starting end to the winding tail end; and/or the presence of a gas in the gas,

the width of the magnet gradually decreases in a direction away from the non-display surface.