CN114898663B

CN114898663B - display device

Info

Publication number: CN114898663B
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: 2023-12-22
Anticipated expiration: 2042-05-19
Also published as: CN114898663A

Abstract

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

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 been developed. The reelable display device can be randomly adjusted in size according to display requirements, and the occupied space of the display device in the storage and carrying processes can be reduced.

However, in the display device which can be wound at present, a certain gap exists between adjacent turns of the screen body after winding, and the gap can cause the screen body to occupy large winding space and cause severe accumulation of curling stress.

Disclosure of Invention

The application provides a display device, can reduce the clearance between the adjacent circle screen body after the coiling.

In order to solve the technical problems, one technical scheme adopted by the application is as follows: provided is a display device including: the screen body comprises a display surface and a non-display surface which are oppositely arranged; the screen body comprises a winding starting end and a winding tail end which are oppositely arranged in the direction perpendicular to the display surface and pointing to the non-display surface; the support layer is arranged on one side of the non-display surface; the magnets are arranged on a part of the surface of one side of the support layer, which is away from the screen body, and are arranged side by side along the direction that the winding start end points to the winding tail end; the support layer can be attracted by the magnets, and after the magnet is wound from the winding starting end, all the magnets are positioned on the support layer of the innermost screen body.

In the prior art case of distinguishing, the beneficial effect of this application is: the application provides a display device wherein the supporting layer is provided with a plurality of magnets on one side deviating from the screen body, and the supporting layer can be attracted by a plurality of magnets. When the screen body is wound from the winding starting end, the support layer positioned on the non-display surface of the screen body is wound along with the screen body. At this time, all the magnets are positioned on the support layer of the innermost ring, the plurality of magnets are equivalent to the center of the screen body after winding, and the plurality of magnets can play a good magnetic adsorption role on the support layer after peripheral winding, so that the gap between the support layers of adjacent rings is reduced, the occupied size of the winding space of the screen body is reduced, the crimping stress born by the screen body is reduced, and the service life of the display device is prolonged.

Drawings

For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

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

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

FIG. 3 is a schematic view of the display device of FIG. 1 after being wound;

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

FIG. 4b is a schematic diagram illustrating an embodiment of the two adjacent magnets in FIG. 4 a;

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

FIG. 5 is a schematic view 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 after being wound;

FIG. 7 is a schematic view 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 after being wound;

fig. 9 is a schematic top view of an embodiment of the screen and magnets of fig. 1.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of a display device according to the present application, and fig. 2 is a schematic sectional structural diagram of an embodiment of fig. 1 along a line A-A. The display device may be a rollable OLED, micro-LED display device, etc., which specifically includes a screen, a support layer, and a plurality of magnets 10, wherein the screen and support layer are illustrated in fig. 1 as a single layer structure for convenience of illustration.

Specifically, as shown in fig. 2, the screen 12 includes a display surface 120 and a non-display surface 122 that are disposed opposite to each other; and in a direction perpendicular to the display surface 120 and directed toward the non-display surface 122 (i.e., the direction indicated by X in fig. 2), the screen 12 includes a winding start 124 and a winding end 126 disposed opposite to each other, and the screen 12 is wound from the winding start 124. Optionally, the screen body 12 includes a flexible substrate, a driving circuit layer, a light emitting layer, and an encapsulation layer that are sequentially stacked, where 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 screen 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 12 may coincide with the outer edge of the screen 12. Alternatively, the supporting layer 14 may be provided with a plurality of hollow areas, and the hollow areas may be circular, square, etc.; and the support layer 14 may form a mesh structure. This design reduces the winding stress of the support layer 14 during winding.

The plurality of magnets 10 are arranged on the side of the support layer 14 away from the screen body 12; alternatively, the plurality of magnets 10 may be fixedly disposed on the support layer 14 by means of adhesive or welding, or the like. And a plurality of magnets 10 are arranged side by side along the direction in which the winding start end 124 points toward the winding end 126 (i.e., the direction labeled X in fig. 1); wherein the support layer 14 is attracted to the magnet 10, and after being wound from the winding start 124, all the magnets 10 are located on the support layer 14 of the innermost screen body, as shown in fig. 3.

In the above design, after the screen 12 is wound from the winding start 124, the support layer 14 on the non-display surface 122 of the screen 12 is wound along with the screen 12. At this time, all the magnets 10 are located on the support layer 14 of the innermost ring, the plurality of magnets 10 are equivalent to the center of the rolled screen 12, and the plurality of magnets 10 can play a good role in magnetic attraction to the support layer 14 of the surrounding winding, so that the gap between the support layers 14 of the adjacent rings is reduced, and then the gap between the screen 12 of the adjacent rings is reduced, so as to reduce the occupied size of the rolled space of the screen 12 and the curling stress suffered by the screen 12, and improve the service life of the display device.

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

Alternatively, in the present embodiment, there is a magnetic attraction force between the adjacent two magnets 10, and after winding from the winding start end 124, the sides of the adjacent two magnets 10 opposite to each other are attached to each other by the magnetic attraction force (as shown in fig. 3). This design allows for a tighter bond between adjacent magnets 10 after winding. For example, as shown in fig. 1, in a direction in which the winding start end 124 is directed toward the winding end 126 (i.e., a direction indicated by X in fig. 1), the magnets 10 include oppositely disposed N and S poles, and the N pole of one magnet 10 is disposed adjacent and opposite to the S pole of the adjacent other magnet 10 so that the side surfaces of the adjacent two magnets 10 can be fitted to each other under the effect of magnetic attraction force after winding.

Preferably, referring to fig. 1 and 2, two adjacent magnets 10 are connected near one side of the support layer 14; i.e. there is no gap between two adjacent magnets 10 in contact with each other on the side close to the support layer 14. The design mode can ensure that the screen 12 positioned between two adjacent magnets 10 can not generate phenomena such as bulge after being wound from the winding starting end 124, so as to reduce the damage probability of the screen 12 and prolong the service life of the screen 12.

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, magnet 10 may form a prismatic mesa structure at this time. 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 the two adjacent magnets 10 includes a first side 100, the other of the two adjacent magnets 10 includes a second side 102, and the first side 100 and the second side 102 are opposite and disposed adjacent; wherein, the first side surface 100 is provided with a first protrusion 104, and the second side surface 102 is provided with a first recess 106 matched with the first protrusion 104; after winding from the winding start 124, the first protrusion 104 is embedded in the first recess 106. In the above design, the first protrusion 104 and the first recess 106 are introduced to enable the relative position between the adjacent two magnets 10 to be better kept fixed after winding.

Further, as shown in fig. 4b, fig. 4b is a schematic structural diagram of an embodiment of the two adjacent magnets in fig. 4a when they are attached. After winding from the winding start 124, the outer wall of the first protrusion 104 is bonded to 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 the two adjacent magnets 10 can be better kept fixed.

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

Further, as shown in fig. 4a, all the magnets 10 are identical in shape, and in the direction from the winding start end 124 to the winding end 126, each of the magnets 10 is provided with two opposite sides, one of which is provided with the first protrusion 104 and the other of which is provided with the first recess 106. This design reduces the complexity of the process in preparing the magnet 10.

Of course, in other embodiments, the plurality of magnets 10 may be configured in other ways. As shown in fig. 4c, fig. 4c is a schematic structural view of another embodiment of the plurality of magnets in fig. 1. The plurality of magnets 10 are divided into two types, a first type of magnet 10a and a second type of magnet 10b, respectively. 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, 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.

Referring again to fig. 3, after being wound from the winding start 124, the sides of the adjacent magnets 10 are attached to each other to form a hollow cylinder; the display device further includes a rotatable shaft 16 fixedly connected to the winding initiation end 124; for example, the shaft 16 may be directly fixedly coupled to the magnet 10 at the winding start 124, and since the magnet 10 is relatively fixedly coupled to the winding start 124, the shaft 16 is fixedly coupled to the winding start 124. Alternatively, as shown in fig. 1, one magnet 10 located at the winding start end 124 includes an abutting surface 108 on the side facing away from the screen, the abutting surface 108 and the outer wall of the rotating shaft 16 may be fixedly connected by an adhesive member, etc., while no adhesive member is provided between the magnet 10 at the rest position and the outer wall of the rotating shaft 16, and at this time, the rotating shaft 16 can easily drive the whole screen 12 to start winding through the magnet 10 fixedly connected thereto after rotating. Further, after the screen 12 is wound from the winding start 124, the inner wall of the hollow cylinder formed by the plurality of magnets 10 is bonded to the outer wall of the rotating shaft 16 (as shown in fig. 3). In the above design manner, the process of subsequently driving the screen body 12 to wind can be simplified by introducing the rotating shaft 16.

Alternatively, the rotating shaft 16 can be attracted by the magnet 10, for example, the material of the rotating shaft 16 may be iron or the like. The design mode can enable the magnet 10 to be closely attached to the rotating shaft 16 after winding, so that the winding radius of the screen body 12 after winding can be effectively controlled.

Alternatively, the hollow cylinder formed by the plurality of magnets 10 may be a cylinder, an elliptic cylinder, or the like, and the corresponding rotating shaft 16 may be a cylinder, an elliptic cylinder, or the like, so long as the outer surface of the rotating shaft 16 is guaranteed to be capable of being 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 configured 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. A plurality of magnets 10 are spaced apart in the direction of the winding initiation end 124 from the winding termination end 126. The display device further comprises a rotating shaft 16 fixedly connected with the winding starting end 124; the outer wall of the rotating shaft 16 is provided with a plurality of recesses 160 disposed at intervals, as shown in fig. 6, and fig. 6 is a schematic structural view of the embodiment of the device after being wound in fig. 5. After winding from the winding start 124, one magnet 10 is inserted into one recess 160. This design allows for a tighter fit between the magnet 10 and the spindle 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 to one of the magnets 10 closest to the winding start end 124 by an adhesive member or the like, and the magnets 10 are fixedly connected to 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 124 is always located in the corresponding recess 160 before and after winding, which reduces the difficulty of the fixed connection between the rotating shaft 16 and the winding start 124.

Of course, in other embodiments, the edge of the magnet 10 closest to the winding start 124 is not flush with the edge of the winding start 124 in the direction in which the winding start 124 points toward the winding end 126, and the winding start 124 may protrude relative to the magnet 10; at this time, the rotation shaft 16 around the recess 160 may be directly fixedly coupled with the protruded winding start end 124 by an adhesive member or the like.

Alternatively, the spindle 16 can be attracted to the magnet 10; for example, the rotation shaft 16 may be formed of a substance such as iron that can be attracted to the magnet 10. This design allows for a tighter fit between the spindle 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 fitted with the inner surface of the recess 160. This design reduces the probability of the magnet 10 coming out of the recess 160.

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

In addition, referring to fig. 9, fig. 9 is a schematic top view of an embodiment of the screen and the magnet in fig. 1. The extension D1 of the magnet 10 is the same as the extension D2 of the screen 12 in a direction perpendicular to the winding start 124 to the winding end 126 (i.e., the direction indicated as Y in fig. 9). The design mode can lead the stress of the screen body 12 in the direction perpendicular to the winding start end 124 to the winding end 126 to be balanced, and the winding effect is good. Of course, in other embodiments, the extension D1 of the magnet 10 may be greater than the extension D2 of the screen 12 in a direction perpendicular to the winding start 124 to the winding end 126.

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 away from the supporting layer 14 may be further provided with a polarizing layer 18 and a cover plate 11 in a stacked manner, and the polarizing layer 18 and the cover plate 11 may be fixedly connected through an adhesive layer. For another example, a support film 13 may be laminated between the screen 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 foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application, or direct or indirect application in other related technical fields are included in 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; the screen body comprises a winding starting end and a winding tail end which are oppositely arranged in the direction perpendicular to the display surface and pointing to the non-display surface;

the support layer is arranged on one side of the non-display surface, and the support layer is wound together with the screen body after the screen body is wound from the winding starting end;

the magnets are arranged on a part of the surface of one side of the support layer, which is away from the screen body, and are arranged side by side along the direction that the winding start end points to the winding tail end; the support layer can be attracted by the magnet, after the magnet is wound from the winding starting end, all the magnet is positioned on the support layer of the innermost screen body, and the support layer after peripheral winding is magnetically attracted by the magnet.

2. The display device of claim 1, wherein the display device comprises a display device,

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

3. The display device of claim 1, wherein the display device comprises a display device,

and after the magnets are wound from the winding starting end, the sides of the two adjacent magnets, which are opposite to each other, are mutually attached under the action of the magnetic attraction force.

4. A display device according to claim 3, wherein,

two adjacent magnets are connected near one side of the supporting layer.

5. A display device according to claim 3, wherein,

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

wherein, a first bulge is arranged on the first side surface, and a first recess matched with the first bulge is arranged on the second side surface; after winding from the winding start end, the first protrusion is embedded into the first recess.

6. The display device of claim 5, wherein the display device comprises a display device,

after the winding start end is wound, the outer wall of the first bulge is attached to the inner wall of the adjacent first recess.

7. The display device of claim 5, wherein the display device comprises a display device,

all the magnets are identical in shape, and each magnet comprises two sides which are oppositely arranged in the direction from the winding start end to the winding 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.

8. A display device according to claim 3, wherein,

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

9. A display device according to claim 3, wherein,

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

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

10. The display device of claim 9, wherein the display device comprises a display device,

the rotating shaft can be attracted by the magnet.

11. 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 a plurality of magnets are arranged at intervals; after winding from the winding start end, one magnet is correspondingly embedded into one concave part.

12. The display device of claim 11, wherein the display device comprises a display device,

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

13. The display device according to any one of claims 1-4 or 8-12, wherein,

the extension length of the magnet is the same as the extension length of the screen body in the direction perpendicular to the winding start end to the winding end; and/or the number of the groups of groups,

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