CN114360386B - Flexible cover plate and display device - Google Patents
Flexible cover plate and display device Download PDFInfo
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- CN114360386B CN114360386B CN202210109417.6A CN202210109417A CN114360386B CN 114360386 B CN114360386 B CN 114360386B CN 202210109417 A CN202210109417 A CN 202210109417A CN 114360386 B CN114360386 B CN 114360386B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- Optics & Photonics (AREA)
Abstract
The application discloses a flexible cover plate and a display device. The flexible cover plate provided by the application comprises the supporting layer, a plurality of accommodating parts are formed in the supporting layer, and the stress supporting parts are filled in the accommodating parts, so that the stress supporting parts can receive stronger impact when the flexible cover plate is impacted by impact force because the hardness of the stress supporting parts is larger than that of the supporting layer, the deformation caused by the impact of the flexible cover plate is reduced, for example, the falling ball falling resistance can be improved, the display panel can be better protected, and the display quality can be improved.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a flexible cover plate and a display device.
Background
With the development of flexible display technology, an OLED (Organic Light-Emitting Diode) display panel shows great potential in flexible display. From a fixed flexible display screen to a foldable display screen, the display screen has the characteristics of large size and portability. In order to further meet the requirement that the display screen can be conveniently stored or carried when not in use, a flexible display screen capable of being curled is generated.
At present, the flexible display screen capable of being curled is mostly considered to be used in the fields of notebook computers, tablet computers, vehicle-mounted display screens and the like, and the curling radius is required to be continuously reduced because of the use requirement of users on the frivolousness and thinness of the flexible display screen, but the ball drop and pen drop performance of the flexible display screen is reduced after the flexible display screen is frivolous and thin.
Disclosure of Invention
The embodiment of the application provides a flexible cover plate and a display device, wherein the flexible cover plate has stronger shock resistance.
An embodiment of the first aspect of the present application provides a flexible cover plate, including a support layer, where the support layer is formed with a plurality of accommodating portions, and stress supporting portions are filled in the accommodating portions, and hardness of the stress supporting portions is greater than that of the support layer.
According to an embodiment of the first aspect of the present application, the accommodating portion is formed on one side surface of the support layer.
According to any one of the foregoing embodiments of the first aspect of the present application, the support layer includes a first support layer and a second support layer that are stacked, the accommodating portion includes a first accommodating portion formed on a side of the first support layer facing the second support layer, and the stress support portion includes a first stress support portion filled in the first accommodating portion;
preferably, the second supporting layer is adhered to the first supporting layer through an adhesive layer;
Preferably, the total volume of the first stress support is less than or equal to one third of the volume of the first support layer.
According to any one of the foregoing embodiments of the first aspect of the present application, the accommodating portion further includes a second accommodating portion formed in the second supporting layer, and the stress supporting portion further includes a second stress supporting portion filled in the second accommodating portion;
Preferably, the second accommodating part is formed on a side surface of the second supporting layer facing away from the first supporting layer, and/or the second accommodating part is formed on a side surface of the second supporting layer facing toward the first supporting layer.
According to any one of the foregoing embodiments of the first aspect of the present application, a pitch between adjacent first accommodating portions is the same as a pitch between adjacent second accommodating portions.
According to any one of the first aspect of the present application, the stress supporting portion and the inner wall of the accommodating portion are fixed by glue adhesion.
According to any one of the foregoing embodiments of the first aspect of the present application, the material of the supporting layer is colorless and transparent polyimide;
the stress support has an elastic modulus of 10GPa or more.
According to any one of the first aspect of the present application, an inner wall of the accommodating portion is a cambered surface.
According to any one of the foregoing embodiments of the first aspect of the present application, the support layer further includes a hardening layer formed on a surface of the support layer facing away from the accommodating portion.
The embodiment of the second aspect of the application also provides a display device, which comprises any one of the flexible cover plates provided by the first aspect of the application, and further comprises a flexible display panel, wherein the flexible cover plate is arranged on one side of a light emitting surface of the flexible display panel.
The flexible cover plate provided by the application comprises the supporting layer, a plurality of accommodating parts are formed in the supporting layer, and the stress supporting parts are filled in the accommodating parts, so that the stress supporting parts can receive stronger impact when the flexible cover plate is impacted by impact force because the hardness of the stress supporting parts is larger than that of the supporting layer, the deformation caused by the impact of the flexible cover plate is reduced, for example, the falling ball falling resistance can be improved, the display panel can be better protected, and the display quality can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic view of a flexible cover plate according to an embodiment of the present application;
fig. 2 is a schematic top view of a first supporting layer in a flexible cover according to an embodiment of the present application;
Fig. 3 to 6 are schematic views illustrating a process for manufacturing a flexible cover plate according to an embodiment of the present application;
FIG. 7 is a schematic view of another flexible cover plate according to an embodiment of the present application;
FIG. 8 is a schematic view of another flexible cover plate according to an embodiment of the present application;
FIG. 9 is a schematic view of another flexible cover plate according to an embodiment of the present application;
FIG. 10 is a schematic view of another flexible cover plate according to an embodiment of the present application;
FIG. 11 is a schematic view of another flexible cover plate according to an embodiment of the present application;
fig. 12 is a schematic structural view of another flexible cover plate according to an embodiment of the present application.
In the accompanying drawings:
1-a flexible cover plate; 10-a support layer; 101-a first support layer; 102-a second support layer; 11-a housing; 111-a first accommodation portion; 112-a second receptacle; 12-stress support; 121-a first stress support; 122-a first stress support; ; 13-hardening layer; 14-colloid; 15-an adhesive layer; 2-a display device; a 20-flexible display panel; 21-a polarizer; 22-a back support layer; 23-a metal layer; 24-an optical adhesive layer; 3-special-shaped base station; 31-convex structure.
Detailed Description
Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The display device comprises a display panel and a cover plate for protecting the display panel, wherein in the flexible display device, the display panel is a flexible display panel, and the cover plate is a flexible cover plate. The inventor finds that the hardness of the flexible cover plate is low, so that the impact resistance is weak, for example, the impact resistance to falling ball pen is poor when the flexible cover plate is subjected to falling ball pen experiments, so that the protection effect on the flexible display panel is poor, and deformation is easy to generate when the flexible cover plate is impacted, so that the display effect is influenced. Based on the study of the above problems, the inventors have provided a flexible cover plate and a display device to improve impact resistance of the display device.
For a better understanding of the present application, the flexible cover plate 1 and the display device 2 according to the embodiment of the present application are described in detail below with reference to fig. 1 to 12.
Referring to fig. 1, an embodiment of the present application provides a flexible cover plate 1, which includes a supporting layer 10, wherein a plurality of accommodating portions 11 are formed in the supporting layer 10, stress supporting portions 12 are filled in the accommodating portions 11, and the hardness of the stress supporting portions 12 is greater than that of the supporting layer 10.
The flexible cover plate 1 provided by the application comprises the supporting layer 10, a plurality of accommodating parts 11 are formed in the supporting layer 10, and the stress supporting parts 12 are filled in the accommodating parts 11, so that when the flexible cover plate 1 receives impact force, the stress supporting parts 12 can receive stronger impact, the deformation caused by the impact of the flexible cover plate 1 is reduced, for example, the anti-falling ball pen-down performance can be improved, the display panel is better protected, and the display quality is improved.
In one possible embodiment, as shown in fig. 1 and 2, the receiving portion 11 is formed at one side surface of the support layer 10.
In the above embodiment, the accommodating portion 11 is formed on one side surface of the support layer 10, and the accommodating portion 11 is a groove formed by recessing one side surface of the support layer 10 toward the inside of the support layer 10, thereby providing an accommodating space for the stress support portion 12.
In the above embodiment, the support layer 10 is one layer, and the accommodating portion 11 is formed on one side surface of the support layer 10, and the hardened layer 13 is provided on the other side surface. Since the surface of the supporting layer 10 facing away from the accommodating portion 11 is a perfectly nonporous flat surface, the hardened layer 13 is disposed on the surface of the supporting layer 10 facing away from the accommodating portion 11 for easy manufacture. And the hardness of the hardening layer 13 is higher, so that the surface of the flexible cover plate 1 can be protected, and the occurrence of scratches is reduced. In the use process of the flexible cover plate, the flexible cover plate is located on one side of the light emitting surface of the flexible display panel, and one side surface of the support layer 10 of the flexible cover plate, where the accommodating portion 11 is formed, is opposite to the display surface of the flexible display panel, and one side surface of the support layer 10, which is away from the accommodating portion 11, is located on one side, which is away from the flexible display panel, and because one side surface of the support layer 10, which is away from the accommodating portion 11, is a perfectly nonporous flat surface, the flatness of the surface, which is provided with the accommodating portion, of the flexible cover plate is higher, and the surface is set to be closer to one side of a user, so that user experience can be improved.
In one possible embodiment, the inner wall of the receptacle 11 is a cambered surface. Thereby, a smooth transition can be realized, the stress supporting portion 12 formed in the accommodating portion 11 is prevented from having a sharp angle, and adverse effects on the impact resistance of the flexible cover plate 1 when subjected to stress impact are avoided.
The cambered surface can be a hemispherical surface and the like, is convenient to prepare, can also be a cambered surface with gradually changed curvature of each part, and is not particularly limited.
In one possible embodiment, the stress support 12 is adhesively secured to the inner wall of the receptacle 11 by means of glue 14. The glue 14 has an adhesive effect to fix the stress supporting portion 12 with the accommodating portion 11 on one hand, and has an impact force for buffering the impact force received by the flexible cover plate 1 on the other hand, so as to improve the impact resistance of the flexible cover plate 1.
Specifically, the colloid 14 may be a liquid Optical Cement (OCR) which is used to facilitate uniform coating of the inside of the receiving portion 11. The material of the colloid 14 may be an optically transparent resin, so as to ensure high light transmittance of the flexible cover plate 1, so as to avoid affecting the display effect.
Specifically, the glue 14 is a whole layer covering the inner wall of the accommodating portion 11, so as to improve the fixing effect of the stress supporting portion 12 and the supporting layer 10, and increase the contact area with the supporting layer 10, so that the buffer action area of the supporting layer 10 is larger, and the impact resistance of the flexible cover plate 1 is further improved.
In one possible embodiment, the material of the support layer 10 is colorless and transparent polyimide. The elastic modulus of the stress supporting portion 12 is 10Gpa or more. Specifically, the material of the stress supporting portion 12 may be polyimide having an elastic modulus of 10Gpa or more, or may be other transparent material that satisfies the above-mentioned elastic modulus requirement and is not easily broken after bending, and the present application is not particularly limited.
As shown in fig. 3, in preparing the above-described support layer 10, the support layer 10 having the receiving portion 11 may be formed by coating colorless and transparent polyimide on the shaped base 3 having the convex structure.
Wherein, the outer surface of the outer convex structure can be an arc surface so that the inner wall of the accommodating part 11 is an arc surface, and the outer surface of the outer convex structure is an arc surface so as to facilitate the stripping of the supporting layer 10 and the special-shaped base 3, thereby facilitating the preparation and improving the preparation yield.
As shown in fig. 4, a hardened layer 13 is then coated on one side of the supporting layer 10 away from the accommodating portion 11, where the hardened layer 13 may be made of acrylic acid, etc., and the hardened layer 13 is formed on the upper surface of the supporting layer 10 (i.e., on the surface of the side away from the accommodating portion 11) by using a coating process, where the hardened layer 13 is light and thin and has excellent wear-resisting and scratch-resisting properties, so as to play a role in protecting, and prevent the upper surface of the flexible cover plate 1 from being scratched, so as to avoid the scratch from affecting the display definition.
The thickness of the hardened layer 13 may be 3 μm to 5 μm to achieve light and thin thickness with good protection, and the present application is not particularly limited with respect to the specific thickness of the hardened layer 13.
As shown in fig. 5, a gel 14 is then coated in the accommodating portion 11 of the support layer 10, the gel 14 covering the inner wall of the accommodating portion 11.
As shown in fig. 6, polyimide having an elastic modulus of 10Gpa or more is then coated on the side of the gel 14 facing away from the support layer 10 and cured to form the stress-supporting portion 12.
In another possible embodiment, as shown in fig. 7, the support layer 10 includes a first support layer 101 and a second support layer 102 that are stacked, the accommodating portion 11 includes a first accommodating portion 111 formed on a side of the first support layer 101 facing the second support layer 102, and the stress support portion 12 includes a first stress support portion 122 filled in the first accommodating portion 111.
In the above embodiment, the first accommodating portion 111 is filled with the first stress supporting portion 122, and since the hardness of the first stress supporting portion 122 is greater than that of the first supporting layer 101, when the flexible cover 1 is subjected to an impact force, the first stress supporting portion 122 can receive a stronger impact, so as to reduce deformation caused by the impact of the flexible cover 1, and better protect the display panel.
In the above embodiment, the support layer 10 includes two layers, i.e., the first support layer 101 and the second support layer 102, which are stacked, and the first receiving portion 111 is formed on the side surface of the first support layer 101 facing the second support layer 102, so that the space of the first receiving portion 111 can be completely surrounded. The second supporting layer 102 is arranged on one side of the first supporting layer 101, so that stability of the flexible cover plate 1 can be enhanced, and mechanical performance of the flexible cover plate 1 is stronger.
In one possible embodiment, the material of the first supporting layer 101 is colorless and transparent polyimide; the thickness is 30 μm to 75 μm. Specifically, the thickness of the first supporting layer 101 may be 30 μm, 31 μm, 32 μm, 35 μm, 40 μm, 45 μm, 51 μm, 68 μm, 75 μm, etc., and the thickness of the first supporting layer 101 is not particularly limited, and the thickness of the first supporting layer 101 is not too thin to achieve the supporting effect, or too thick to satisfy the demand of the user for light and thin, and the first supporting layer 101 in the above thickness range may be selected to achieve the supporting effect while achieving the light and thin.
In a possible implementation manner, the material of the second supporting layer 102 is the same as that of the first supporting layer 101, and may be colorless and transparent polyimide; the thickness is 10 μm to 25 μm. Specifically, the thickness of the second supporting layer 102 may be 10 μm, 11 μm, 12 μm, 15 μm, 18 μm, 20 μm, 21 μm, 24 μm, 25 μm, etc., and the present application is not particularly limited, and the thickness of the second supporting layer 102 is not too thin to achieve the supporting effect, nor too thick to facilitate the light and thin of the flexible cover plate 1. In a possible embodiment, as shown in fig. 7, a side surface of the second supporting layer 102 facing the first supporting layer 101 and a side surface of the second supporting layer 102 facing away from the first supporting layer 101 are both flat and non-porous surfaces, and at this time, the supporting effect of the second supporting layer 102 on the first supporting layer 101 can be further enhanced, so that the stability and mechanical performance of the flexible cover plate 1 are stronger.
In the use process of the flexible cover plate, the flexible cover plate is located at one side of the light emitting surface of the flexible display panel, the first supporting layer 101 of the flexible cover plate is located at one side far away from the flexible display panel, and the second supporting layer 102 is located at one side close to the flexible display panel. The first accommodating part 111 is formed in the first supporting layer 101, the first accommodating part 111 is filled with the first stress supporting part 122, the first supporting layer 101 is placed on one side far away from the flexible display panel, so that the first stress supporting part 122 is closer to the upper surface of the flexible cover plate, the first stress supporting part 122 can bear stronger impact, and when the upper surface of the flexible cover plate is impacted, the protection effect of the flexible cover plate on the flexible display panel is better.
In one possible embodiment, the second support layer 102 is bonded to the first support layer 101 by the first adhesive layer 15 and the adhesive layer 15. The first adhesive layer 15 the adhesive layer 15 may be a colorless transparent optical cement to ensure light transmittance of the flexible cover plate 1.
In one possible embodiment, the total volume of the first stress support 122 is less than or equal to one third of the volume of the first support layer 101.
In the above embodiment, the first stress supporting portions 122 are uniformly distributed in the first supporting layer 101, and the total volume of the first stress supporting portions 122 in all the first accommodating portions 111 does not exceed one third of the total volume of the first supporting layer 101, thereby preventing the curling effect of the flexible cover plate 1 from being affected by the excessive total volume of the first stress supporting portions 122, and by controlling the total volume of the first stress supporting portions 122 within the above range, the curling performance of the flexible cover plate 1 is satisfied while the impact resistance of the flexible cover plate 1 is improved.
In one possible embodiment, the accommodating portion 11 further includes a second accommodating portion 112 formed in the second supporting layer 102, and the stress supporting portion 12 further includes a second stress supporting portion 12 filled in the second accommodating portion 112.
Specifically, as shown in fig. 8, the second receiving part 112 is formed at a side surface of the second support layer 102 facing away from the first support layer 101, and/or, as shown in fig. 9, the second receiving part 112 is formed at a side surface of the second support layer 102 facing toward the first support layer 101.
In the above embodiment, the plurality of second accommodating portions 112 are formed in the second support layer 102, and the second accommodating portions 112 are grooves formed by the second support layer 102 being recessed toward the inside of the second support layer 102 from the side surface of the first support layer 101, or grooves formed by the second support layer 102 being recessed toward the inside of the second support layer 102 from the side surface of the first support layer 101. The second accommodating portion 112 is filled with the second stress supporting portion 12, and since the hardness of the second stress supporting portion 12 is greater than that of the second supporting layer 102, when the flexible cover plate 1 receives an impact force, the second stress supporting portion 12 can receive stronger impact so as to reduce deformation caused by the impact, for example, the anti-falling ball pen-down performance can be improved, the display panel can be better protected, and accordingly, the display quality can be improved.
In the use process of the flexible cover plate, the flexible cover plate is located at one side of the light emitting surface of the flexible display panel, the first supporting layer 101 of the flexible cover plate is located at one side far away from the flexible display panel, and the second supporting layer 102 is located at one side near the flexible display panel. The first accommodating portion 111 is formed on a side surface of the first supporting layer 101 facing the second supporting layer 102, a side surface of the first supporting layer 101 facing away from the second supporting layer 102 is a flat surface, and the second accommodating portion 112 is formed on a side surface of the second supporting layer 102 facing away from the first supporting layer 101. The flexible display panel is thus placed on the side of the second support layer 102 facing away from the first support layer 101 such that the flat surface side of the first support layer 101 faces the user, thereby providing a better visual experience for the user.
In the above embodiment, the surface of one side of the first supporting layer 101 facing away from the second supporting layer 102 is further formed with the hardened layer 13, and the hardened layer 13 is located on one side of the first supporting layer 101 and the second supporting layer 102 facing away from the flexible display panel in the use process of the flexible cover plate, so that the hardened layer 13 has higher hardness, and the surface of the flexible cover plate 1 can be protected, and the occurrence of scratches is reduced.
Or the first accommodating part 111 is formed on the side surface of the first support layer 101 facing the second support layer 102, and the second accommodating part 112 is formed on the side surface of the second support layer 102 facing the first support layer 101. At this time, the surface of the first supporting layer 101 facing away from the second supporting layer 102 and the surface of the second supporting layer 102 facing away from the first supporting layer 101 are both flat surfaces, so that the first supporting layer 101 of the flexible cover plate may be located at a side far away from the flexible display panel, and the second supporting layer 102 may be located at a side close to the flexible display panel; the first supporting layer 101 of the flexible cover plate may be located at a side close to the flexible display panel, and the second supporting layer 102 may be located at a side far from the flexible display panel; the present application is not particularly limited. At this time, the accommodating portion of one of the first supporting layer 101 and the second supporting layer 102, which is close to the flexible display panel, is located on one side of the first supporting layer 101 or the second supporting layer 102, which is close to the side surface of the flexible cover plate, which faces away from the flexible display panel, so that the upper surface of the flexible cover plate is impacted to have a better protection effect, and the deformation of the upper surface caused by the impact is reduced, so that the protection effect of the flexible cover plate on the flexible display panel is better. In the above embodiment, the hardened layer 13 is formed on the side, away from the flexible display panel, of the first support layer 101 and the second support layer 102, where one of the first support layer and the second support layer 102 faces away from the flexible display panel, and the hardened layer 13 has higher hardness, so that the surface of the flexible cover plate 1 can be protected, and the occurrence of scratches can be reduced.
In one possible embodiment, the spacing between adjacent first receptacles 111 is the same as the spacing between adjacent second receptacles 112. So that the adjustment action positions of the first stress supporting portion 122 on the first supporting layer 101 and the adjustment action positions of the second stress supporting portion 12 on the second supporting layer 102 are distributed more uniformly.
In one possible embodiment, as shown in fig. 8, the orthographic projection of the first accommodating portion 111 on the hardened layer 13 overlaps the orthographic projection of the second accommodating portion 112 on the hardened layer 13, so that the superposition of the stress-resisting effects of the first stress supporting portion 122 and the second stress supporting portion 12 can further enhance the impact resistance of the flexible cover plate 1 while enhancing the mechanical performance of the flexible cover plate 1 by providing the second supporting layer 102.
In another possible embodiment, as shown in fig. 9 and 10, the front projection of the first accommodating portion 111 on the hardened layer 13 and the front projection of the second accommodating portion 112 on the hardened layer 13 are arranged in a staggered manner and do not overlap, so that the area of the flexible cover plate 1, which is improved by the first stress supporting portion 122 and the second stress supporting portion 12, is increased, and the flexibility and the impact resistance are both satisfied.
In another possible embodiment, as shown in fig. 11, the orthographic projection of the first accommodating portion 111 on the hardened layer 13 and the orthographic projection of the second accommodating portion 112 on the hardened layer 13 may also partially overlap, which may also have the effect of increasing the area of the flexible cover plate 1 where the impact resistance is enhanced by the first stress supporting portion 122 and the second stress supporting portion 12.
In one possible embodiment, the total volume of the first stress support 122 is less than or equal to one third of the volume of the first support layer 101, and the total volume of the second stress support 12 is less than or equal to one third of the volume of the second support layer 102.
In the above embodiment, the first stress supporting portions 122 are uniformly distributed in the first supporting layer 101, and the total volume of the first supporting portions in all the first accommodating holes does not exceed one third of the total volume of the first supporting layer 101, so as to prevent the curling effect of the flexible cover plate 1 from being affected by the excessive total volume of the first stress supporting portions 122, and by controlling the total volume of the first stress supporting portions 122 within the above range, the curling performance of the flexible cover plate 1 is satisfied while the impact resistance of the flexible cover plate 1 is improved; the second stress supporting parts 12 are uniformly distributed in the second supporting layer 102, and the total volume of the second supporting parts in all the second accommodating holes is not more than one third of the total volume of the second supporting layer 102, so that the curling effect of the flexible cover plate 1 is prevented from being influenced due to the overlarge total volume of the second stress supporting parts 12, and the total volume of the second stress supporting parts 12 is controlled within the range, so that the impact resistance of the flexible cover plate 1 is improved while the curling performance of the flexible cover plate 1 is met.
In a possible embodiment, the second stress supporting portion 12 and the first stress supporting portion 122 are made of the same material, and the second supporting layer 102 and the first supporting layer 101 are made of the same material, so that the stretching effect of the first supporting layer 101 and the second supporting layer 102 is the same, and the curling or bending effect of the flexible cover plate 1 is better.
In one possible embodiment, the inner walls of the first and second receiving parts 111 and 112 are cambered surfaces, so that smooth transition is realized, sharp angles of the first and second stress supporting parts 122 and 12 formed in the first and second receiving parts 111 and 112 are prevented, and adverse effects on the impact resistance of the flexible cover plate 1 when being impacted by stress are avoided.
The application also provides a display device 2, which comprises any one of the flexible cover plates 1 provided in the embodiment of the application, and further comprises a flexible display panel 20, wherein the flexible cover plate 1 is arranged on one side of a light emitting surface of the flexible display panel 20.
The display device 2 provided by the application further comprises a polaroid 21 arranged on one side of the flexible display panel 20 facing the flexible cover plate 1 and an optical adhesive layer 24 for attaching the flexible cover plate 1 to the polaroid 21, wherein the polaroid 21 is a circular polaroid 21, when ambient light enters the flexible display panel 20 through the circular polaroid 21, the ambient light becomes circular polarized light after passing through the circular polaroid 21, the circular polarized light is reflected by a metal layer 23 in the flexible display panel 20, the rotation direction is changed and is absorbed by the circular polaroid 21, the polaroid 21 is beneficial to preventing external light from being emitted through a display surface after being reflected by the metal layer 23 in the flexible display panel 20, so that the display quality is improved, meanwhile, in a non-display state, the phenomenon that the display panel is light-leaked due to the fact that the external light reflected by the metal layer 23 is emitted from the display surface is prevented, and the user experience of the display panel is improved.
The display device 2 provided by the application further comprises a back support layer 22 and a patterned metal layer 23 which are arranged on one side of the flexible display panel 20 away from the light-emitting surface, wherein the patterned metal layer 23 can improve the recovery characteristic of the display device 2 after bending, the patterned metal layer 23 deforms in the bending process to disperse stress generated in bending, and the patterned metal layer 23 drives the display panel to recover to be flat in the recovery process; the back support layer 22 is disposed between the flexible display panel 20 and the patterned metal layer 23, and can function as a buffer, support, and protect the flexible display panel 20.
In accordance with the above embodiments of the application, these embodiments are not exhaustive of all details, nor are they intended to limit the application to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, to thereby enable others skilled in the art to best utilize the application and various modifications as are suited to the particular use contemplated. The application is limited only by the claims and the full scope and equivalents thereof.
Claims (11)
1. The flexible cover plate is characterized by comprising a supporting layer, wherein a plurality of accommodating parts are formed in the supporting layer, stress supporting parts are filled in the accommodating parts, the hardness of the stress supporting parts is greater than that of the supporting layer, the stress supporting parts comprise polyimide with the elastic modulus of greater than or equal to 10Gpa, and the stress supporting parts are uniformly distributed in the supporting layer; the support layer comprises a first support layer and a second support layer which are arranged in a stacked mode, the accommodating part comprises a first accommodating part formed on one side of the first support layer towards the second support layer, and the stress supporting part comprises a first stress supporting part filled in the first accommodating part;
the hardening layer is formed on one side surface of the supporting layer, which is far away from the accommodating part;
the hardening layer is located on the surface of the flexible cover plate and located on one side, far away from the second supporting layer, of the first supporting layer, and one side, far away from the accommodating portion, of the supporting layer is a flat non-porous surface.
2. The flexible cover sheet according to claim 1, wherein the receiving portion is formed at a side surface of the support layer.
3. The flexible cover sheet of claim 1 wherein the flexible cover sheet comprises a flexible cover sheet,
The second supporting layer is adhered to the first supporting layer through an adhesive layer.
4. A flexible cover sheet according to claim 3, wherein the total volume of the first stress support is less than or equal to one third of the volume of the first support layer.
5. A flexible cover sheet according to claim 3, wherein the receiving portion further comprises a second receiving portion formed in the second support layer, the stress support portion further comprising a second stress support portion filled in the second receiving portion.
6. The flexible cover sheet of claim 5, wherein the second receiving portion is formed at a side surface of the second support layer facing away from the first support layer, and/or the second receiving portion is formed at a side surface of the second support layer facing toward the first support layer.
7. The flexible cover sheet of claim 5 wherein the spacing between adjacent first receptacles is the same as the spacing between adjacent second receptacles.
8. The flexible cover sheet of claim 1, wherein the stress support portion is fixed to an inner wall of the receiving portion by a glue bond.
9. The flexible cover sheet according to claim 1, wherein the support layer is made of colorless transparent polyimide;
the stress support has an elastic modulus of 10GPa or more.
10. The flexible cover sheet of claim 1, wherein the inner wall of the receiving portion is a cambered surface.
11. A display device, comprising the flexible cover plate of any one of claims 1-10, and further comprising a flexible display panel, wherein the flexible cover plate is disposed on a light-emitting surface side of the flexible display panel.
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| CN202210109417.6A CN114360386B (en) | 2022-01-28 | 2022-01-28 | Flexible cover plate and display device |
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| CN115050263B (en) * | 2022-06-15 | 2023-10-27 | 昆山国显光电有限公司 | Flexible cover plate, display panel and display device |
| CN115019660B (en) | 2022-06-29 | 2023-12-01 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
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| CN114360386A (en) | 2022-04-15 |
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