CN216980032U

CN216980032U - Flexible support piece, flexible display module and display device

Info

Publication number: CN216980032U
Application number: CN202220350259.9U
Authority: CN
Inventors: 王浩然
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-07-15
Anticipated expiration: 2032-02-21

Abstract

The utility model provides a flexible support piece, flexible display module assembly and display device relates to and shows technical field. The flexible support comprises: the thin-type solar cell comprises thick areas and thin areas which are alternately distributed and integrated, wherein the thick areas and the thin areas are of strip-shaped structures, and the thin areas are provided with a plurality of through holes. In the embodiment of the disclosure, the flexible supporting member comprises a plurality of thick areas distributed at intervals, so that the flexible display panel can be stably supported when being in an unfolded state, the thin area between two adjacent thick areas is provided with the through hole, the thin area is ensured to have certain stretching and compressing functions, and the situation that the flexible supporting member is broken when being folded or curled can be avoided.

Description

Flexible support piece, flexible display module and display device

Technical Field

The utility model relates to a show technical field, particularly, relate to a flexible support piece, flexible display module assembly and display device.

Background

Along with the continuous maturity of flexible display technology, flexible display module becomes the focus of research. Wherein, flexible display module assembly includes flexible display panel and supporting layer. In order to realize the folding or sliding rolling of the flexible display module, each film layer (such as a supporting layer) of the flexible display module is made of a flexible high polymer material. And because the adoption of flexible polymer film layer for the whole support nature of flexible display module assembly is showing and is descending, especially the folding district or the smooth book district of flexible display module assembly. And when the support nature of flexible display module assembly descends, cause flexible display module assembly's anti extrusion ability to receive the influence.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a flexible supporting member, a flexible display module and a display device, which can realize stable support of a flexible display panel through the flexible supporting member, thereby ensuring the anti-extrusion capability of the flexible display module.

According to an aspect of the present disclosure, there is provided a flexible support for supporting a flexible display panel, including: thick regions and thin regions which are alternately distributed and integrated;

the thick region and the thin region are both strip-shaped structures, and the thin region is provided with a plurality of through holes.

According to any one of the flexible supports of the present disclosure, in the thickness direction, the surfaces of the thick region and the thin region on the first side are flush, and the first side is a side facing the flexible display panel.

According to the flexible supporting member disclosed by the present disclosure, an edge along the length direction on a surface of the thick region on a second side in the thickness direction has a chamfer, and the second side is a side for facing away from the flexible display panel.

According to the flexible supporting member disclosed by the invention, the surfaces of the two sides of the thick area in the thickness direction respectively protrude out of the surfaces of the two sides of the thin area.

According to the flexible supporting piece disclosed by the invention, the edges along the length direction on the surfaces of two sides of the thick area in the thickness direction are provided with chamfers.

The flexible support of any of the present disclosure, the thickness of the thick region is greater than or equal to 0.1 millimeters and less than or equal to 1.0 millimeters.

The flexible support according to any of the present disclosure, a ratio of the thin region thickness to the thick region thickness is greater than or equal to 10% and less than or equal to 80%.

The flexible support according to any of the present disclosure, a width of the thick region is greater than or equal to 0.2 mm and less than or equal to 2.0 mm, and a width of the thin region is greater than or equal to 0.3 mm and less than or equal to 3.0 mm.

According to another aspect of the present disclosure, there is provided a flexible display module, including:

a flexible display panel;

the flexible supporting member according to the above aspect, the flexible supporting member is located on a non-light-emitting surface side of the flexible display panel;

a flexible adhesive layer between the flexible display panel and the flexible support.

The flexible display module according to any one of the present disclosure, further comprising a flexible support layer;

the flexible supporting layer is located between the flexible display panel and the flexible supporting member, and the flexible bonding layers are arranged between the flexible display panel and the flexible supporting layer and between the flexible supporting layer and the flexible supporting member.

According to this disclose arbitrary flexible display module assembly, flexible adhesive linkage's thickness is less than or equal to 0.2 millimeter, the adhesive linkage includes elastomer layer and is located the gluing material layer of elastomer layer both sides.

According to another aspect of the present disclosure, a display device is provided, which includes the flexible display module according to the above another aspect.

The embodiment of the disclosure at least comprises the following technical effects:

in the embodiment of the disclosure, the flexible support comprises a plurality of thick regions distributed at intervals, so that when the flexible display panel is in an unfolded state, the flexible display panel can be stably supported; in addition, the thin area between two adjacent thick areas is provided with the through hole, so that the thin area has certain stretching and compressing functions, and the situation that the flexible supporting piece is broken when being folded or curled can be avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic structural diagram of a flexible support according to an embodiment of the present disclosure.

Fig. 2 is a partial structural schematic view of a flexible support according to an embodiment of the present disclosure.

Fig. 3 is a partial schematic structural view of another flexible support provided in the embodiments of the present disclosure.

Fig. 4 is a partial schematic structural view of another flexible support provided in the embodiments of the present disclosure.

Fig. 5 is a partial schematic structural view of another flexible supporting member according to an embodiment of the present disclosure.

Fig. 6 is a schematic cross-sectional view of the flexible supporting member shown in fig. 1 along the direction a-a.

Fig. 7 is a schematic cross-sectional view of the flexible support member shown in fig. 1 taken along the direction a-a.

Fig. 8 is a schematic cross-sectional view of the flexible support member shown in fig. 1 taken along the direction a-a.

Fig. 9 is a schematic cross-sectional view of the flexible supporting member shown in fig. 1 along the direction a-a.

Fig. 10 is a schematic structural diagram of a flexible display module according to an embodiment of the present disclosure.

Fig. 11 is a schematic structural diagram of another flexible display module according to an embodiment of the present disclosure.

Reference numerals:

1. a flexible display panel; 2. a flexible support; 3. a flexible support layer; 4. a flexible adhesive layer; 5. a flexible cover plate;

21. a thick region; 22. a thin region; 221. and a through hole.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

The terms "the", "said" and "at least one" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

With the continuous maturity of flexible display technology, the flexible display panel also has the functions of folding and rolling. In order to ensure the supporting effect of the flexible display panel, a metal supporting member is usually added to the back surface (non-light-emitting surface) of the flexible display panel in related designs. But is limited by the characteristic of poor bending resistance of the metal itself, and the metal support is easy to break due to fatigue.

Fig. 1 illustrates a schematic structural diagram of a flexible support provided in an embodiment of the present disclosure. The flexible support 2 is used to support a flexible display panel, as shown in fig. 1, the flexible support 2 includes: thick regions 21 and thin regions 22 alternately distributed and integrated; the thick region 21 and the thin region 22 are each a stripe-like structure, and the thin region 22 has a plurality of through holes 221.

In the embodiment of the present disclosure, the flexible supporting member 2 includes the plurality of thick regions 21 distributed at intervals, so that when the flexible display panel is in the unfolded state, the flexible display panel can be stably supported, and the thin region 22 located between two adjacent thick regions 21 is provided with the through hole 221, which ensures that the thin region 22 has certain stretching and compressing functions, so that the situation that the flexible supporting member 2 is broken when being folded or curled can be avoided.

In addition, in the related art, in order to realize the roll sliding of the flexible display panel, the non-light-emitting surface of the flexible display panel is provided with a plurality of metal strips, so that the roll sliding of the flexible display panel is realized through the engagement of the plurality of metal strips and the reel. However, in the sliding and rolling process of the flexible display panel, the metal strip is easy to tilt or fall off, so that the normal use of the flexible display panel is affected, and the supporting effect on the flexible display panel is reduced. When the flexible support 2 in the embodiment of the present disclosure is used, the thick regions 21 and the thin regions 22 that are alternately distributed are integrated, so that abnormal deformation (such as tilting) or falling off of the thick regions 21 on the flexible support 2 is limited.

The flexible supporting member 2 is made of a metal material to ensure that the flexible supporting member 2 has a certain hardness, so as to ensure the stability of supporting the flexible display panel, and of course, other materials having a certain hardness may be used.

Wherein, the thick region 21 and the thin region 22 are different in thickness, and the thickness of the thick region 21 is greater than that of the thin region 22. The alternating directions of the thick regions 21 and the thin regions 22 are perpendicular to the axis of the rotating shaft when the flexible display panel is folded or the axis of the winding shaft when the flexible display panel is rolled. The thick region 21 and the thin region 22 have a transition region therebetween to avoid the situation that the connection between the thick region 21 and the thin region 22 is subject to stress concentration to cause tensile failure when the flexible support 2 is folded or rolled. The transition region may be an arcuate transition from the surface of the thick region 21 to the surface of the thin region 22.

The number of the through holes 221 formed in the thin region 22 may be adjusted according to the overall modulus required by the flexible support 2, which may specifically refer to related technologies, and details thereof are not repeated in the embodiments of the present disclosure. The extending direction of the through hole 221 is not parallel to the alternating direction of the thick region 21 and the thin region 22, and the extending direction of the through hole 221 is the direction in which the through hole 221 extends on the plane of the thin region 22. Illustratively, the extending direction of the through hole 221 is perpendicular to the alternating direction of the thick region 21 and the thin region 22, and the extending direction of the through hole 221 is the length direction of the thin region 22.

The through hole 221 is an oblong hole, an elliptical hole, or a through hole 221 with other shapes, such as a rectangular through hole 221 with a rounded chamfer, etc., as long as the problem of local stress concentration in the thin region 22 during stretching or compressing can be avoided.

In some embodiments, as shown in fig. 1, the plurality of through holes 221 are distributed in an array, and the row direction of the array is the same as the length of the thin region 22. In this manner, uniformity of tensile and compressive properties throughout the thin zone 22 is ensured.

As shown in fig. 1, the row direction of the array is the length direction of the through holes 221, and the through holes 221 in two adjacent rows are distributed in a staggered manner, so that the thin region 22 is prevented from having a continuous solid structure in the alternating direction of the thick region 21 and the thin region 22, and the thin region 22 is ensured to have the functions of stretching and compressing. As can be seen from fig. 1, when the through holes 221 in two adjacent rows are distributed in a staggered manner, the through hole 221 located at the end of the thin region 22 in one row of through holes 221 may extend to the end of the thin region 22. At this time, the cross section of the through-hole 221 is a non-closed region.

As shown in fig. 2 or fig. 3, the through holes 221 distributed in an array include two rows of through holes 221, or as shown in fig. 4 or fig. 5, the through holes 221 distributed in an array include three rows of through holes 221. In addition, as shown in fig. 2 or fig. 4, one row of through holes 221 in the multiple rows of through holes close to the thick region 21 is disposed at an interval from the thick region 21, and as shown in fig. 3 or fig. 5, of course, one row of through holes 221 in the multiple rows of through holes close to the thick region 21 is disposed next to the thick region 21, as long as the connection strength between the thick region 21 and the thin region 22 is ensured, which is not limited in the embodiment of the present disclosure.

In some embodiments, the plurality of through holes 221 all extend in the same direction. Of course, in other embodiments, the extending directions of the through holes 221 may be different, and in this case, the distribution manner of the through holes 221 may refer to the related art as long as the uniformity of the stretching and compressing performance of the thin region 22 in the whole area is ensured, which is not limited by the embodiments of the present disclosure.

In some embodiments, as shown in fig. 6 or 7, the surfaces of the thick region 21 and the thin region 22 on the first side in the thickness direction are flush. That is, the surface of the flexible support 2 on the second side in the thickness direction has grooves spaced in the alternating direction of the thick and

thin regions

21, 22.

Wherein, the first side refers to a side of the flexible support 2 facing the flexible display panel when supporting the flexible display panel, and the second side refers to a side of the flexible support 2 facing away from the flexible display panel when supporting the flexible display panel.

When the flexible display panel is supported by the flexible support 2, the surface of the first side of the flexible support 2 in the thickness direction may be bonded to the non-light-emitting surface of the flexible display panel, so as to improve the support area of the flexible display panel, thereby ensuring the stability of supporting the flexible display panel. Of course, the surface of the second side of the flexible support 2 in the thickness direction may also be bonded to the non-light-emitting surface of the flexible display panel, and at this time, the thin region 22 included in the flexible support 2 is not bonded to the flexible display panel, so that the limitation of the flexible display panel on the stretching or compressing performance of the thin region 22 is avoided, and the deformability of the thin region 22 is ensured.

As shown in fig. 7, the edge of the thick region 21 on the second side surface in the thickness direction along the length direction is chamfered. So set up, can avoid two adjacent thick districts 21 to appear the condition of collision extrusion when flexible support piece 2 is folding or smooth book to the folding or smooth book function of flexible support piece 2 has been guaranteed.

In other embodiments, as shown in fig. 8 or 9, the surfaces on both sides of the thick region 21 in the thickness direction may be convex from the surfaces on both sides of the thin region 22. That is, the surfaces of both sides of the flexible support 2 in the thickness direction each have grooves spaced in the alternating direction of the thick regions 21 and the thin regions 22.

When the flexible display panel is supported by the flexible support member 2, the two side structures of the flexible support member 2 in the thickness direction are similar, so that the bonding surface of the flexible support member 2 and the flexible display panel is not needed to be distinguished, and the bonding area of the flexible support member 2 and the flexible display panel is increased. In addition, no matter which side surface of the flexible support member 2 in the thickness direction is bonded to the flexible display panel, the thin region 22 included in the flexible support member 2 is not bonded to the flexible display panel, so that the limitation of the flexible display panel on the stretching or compressing performance of the thin region 22 is avoided, and the deformability of the thin region 22 is ensured.

As shown in fig. 9, the edges along the length direction on the surfaces on both sides of the thick region 21 in the thickness direction are chamfered. So set up, can avoid two adjacent thick districts 21 the condition that the collision extruded appears when flexible support piece 2 is folding or smooth book to the folding or smooth book function of flexible support piece 2 has been guaranteed.

In some embodiments, as shown in fig. 6 or 8, the thickness d1 of thick region 21 is greater than or equal to 0.1 millimeters and less than or equal to 1.0 millimeter. In this way, stability of support when the thick region 21 supports the flexible display panel 1 is ensured. Illustratively, the thickness d1 of the thick region 21 is 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm.

In some embodiments, as shown in fig. 6 or fig. 8, the ratio of the thickness d2 of thin region 22 to the thickness d1 of thick region 21 is greater than or equal to 10% and less than or equal to 80%. Continuing the above example, assuming a 50% ratio of thickness d2 of thin region 22 to thickness d1 of thick region 21, thickness d2 of thin region 22 is 0.1 mm when thickness d1 of thick region 21 is 0.2 mm, or thickness d2 of thin region 22 is 0.4 mm when thickness d1 of thick region 21 is 0.8 mm.

In some embodiments, as shown in fig. 6 or 8, the width L1 of thick regions 21 is greater than or equal to 0.2 millimeters and less than or equal to 2.0 millimeters, and the width L2 of thin regions 22 is greater than or equal to 0.3 millimeters and less than or equal to 3.0 millimeters.

Taking the sliding rolling type flexible display panel as an example, the width L1 of the thick region 21 and the width L2 of the thin region 22 may be specifically determined by combining the relative positions of the thick region 21 and the thin region 22 in the thickness direction and the sliding rolling radius during sliding rolling, as long as the adjacent two thick regions 21 do not collide and extrude during sliding rolling. Illustratively, the thick region 21 has a width L1 of 0.5 millimeters and the thin region 22 has a width L2 of 0.7 millimeters.

Fig. 10 illustrates a schematic structural diagram of a flexible display module according to an embodiment of the present disclosure. As shown in fig. 10, the flexible display module includes: a flexible display panel 1; in the flexible supporting member 2 according to the above embodiment, the flexible supporting member 2 is located on the non-light-emitting surface side of the flexible display panel 1; and the flexible adhesive layer 4 is arranged between the flexible display panel 1 and the flexible support 2.

Since the flexible supporting member 2 of the above embodiment is adopted in the embodiment of the present disclosure, the beneficial effects of the flexible display module can be described with reference to the above embodiment, and are not described herein again.

Wherein, the thickness of the flexible adhesive layer 4 is less than or equal to 0.2 mm. In addition, in order to ensure the folding or the smooth rolling of the flexible adhesive layer 4, the flexible adhesive layer 4 is double-sided cemented using a polymer elastomer material as a base material. Illustratively, the flexible adhesive layer 4 includes an elastomer layer and adhesive material layers on both sides of the elastomer layer. The material of the elastomer layer can be rubber material, silicon rubber material, thermoplastic polyurethane elastomer material and the like.

As shown in fig. 10 or fig. 11, the flexible display module further includes a flexible cover 5, and the flexible cover 5 is located on the light-emitting surface side of the flexible display panel 1. Therefore, the flexible display panel 1 is protected through the flexible cover plate 5, and the service life of the flexible display panel is prolonged.

In some embodiments, as shown in fig. 11, the flexible display module further includes a flexible support layer 3; the flexible support layer 3 is located between the flexible display panel 1 and the flexible support 2, and the flexible bonding layers 4 are respectively located between the flexible display panel 1 and the flexible support layer 3, and between the flexible support layer 3 and the flexible support 2.

The structure of the flexible support layer 3 can refer to the related art. Illustratively, the flexible support layer 3 is a metal structure layer with a uniform thickness and a through hole 221.

In the embodiment of the disclosure, a display device is further provided, and the display device comprises the flexible display module in the embodiment.

Since the flexible display module included in the display device in the embodiment of the present disclosure adopts the flexible supporting member in the above embodiment, the display device has the beneficial effects that reference is made to the above embodiment, which is not repeated herein.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A flexible support for supporting a flexible display panel, comprising: thick regions and thin regions which are alternately distributed and integrated;

2. The flexible support of claim 1, wherein the surfaces of the thick region and the thin region on a first side in a thickness direction are flush, the first side being a side for facing the flexible display panel.

3. The flexible support of claim 2, wherein a lengthwise edge of a surface of the thick region on a second side in a thickness direction, the second side being a side for facing away from the flexible display panel, has a chamfer.

4. The flexible support of claim 1 wherein the surfaces on either side of the thick region in the thickness direction are convex relative to the surfaces on either side of the thin region.

5. The flexible support of claim 4 wherein the lengthwise edges on the surfaces on either side of the thick region in the thickness direction are chamfered.

6. The flexible support of any of claims 1-5 wherein the thickness of the thick region is greater than or equal to 0.1 mm and less than or equal to 1.0 mm.

7. The flexible support of any of claims 1-5 wherein the ratio of the thickness of the thin region to the thickness of the thick region is greater than or equal to 10% and less than or equal to 80%.

8. The flexible support of any of claims 1-5 wherein the thick region has a width of greater than or equal to 0.2 mm and less than or equal to 2.0 mm and the thin region has a width of greater than or equal to 0.3 mm and less than or equal to 3.0 mm.

9. The utility model provides a flexible display module assembly which characterized in that includes:

a flexible display panel;

the flexible support of any of claims 1-8, wherein the flexible support is located on a non-light-exiting side of the flexible display panel;

10. The flexible display module of claim 9, wherein the flexible display module further comprises a flexible support layer;

the flexible supporting layer is located between the flexible display panel and the flexible supporting piece, and the flexible bonding layers are arranged between the flexible display panel and the flexible supporting layer and between the flexible supporting layer and the flexible supporting piece.

11. The flexible display module of claim 9 or 10, wherein the flexible adhesive layer has a thickness of 0.2 mm or less, and the adhesive layer comprises an elastomer layer and adhesive material layers on both sides of the elastomer layer.

12. A display device, comprising the flexible display module according to any one of claims 9 to 11.