CN114550588B - Flexible cover plate, display device and preparation method of flexible cover plate - Google Patents
Flexible cover plate, display device and preparation method of flexible cover plate Download PDFInfo
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- CN114550588B CN114550588B CN202210156978.1A CN202210156978A CN114550588B CN 114550588 B CN114550588 B CN 114550588B CN 202210156978 A CN202210156978 A CN 202210156978A CN 114550588 B CN114550588 B CN 114550588B
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- 238000002360 preparation method Methods 0.000 title abstract description 12
- 230000008093 supporting effect Effects 0.000 claims abstract description 243
- 239000011248 coating agent Substances 0.000 claims abstract description 38
- 238000000576 coating method Methods 0.000 claims abstract description 38
- 239000010410 layer Substances 0.000 claims description 101
- 239000000463 material Substances 0.000 claims description 44
- 238000000034 method Methods 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 230000004308 accommodation Effects 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000011247 coating layer Substances 0.000 claims 2
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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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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- Physics & Mathematics (AREA)
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application provides a flexible cover plate, a display device and a preparation method of the flexible cover plate. The flexible cover plate comprises a first supporting layer and a hardening coating, wherein the first supporting layer comprises a first supporting part and a second supporting part, the second supporting part comprises a plurality of first containing cavities which are distributed at intervals, the first supporting parts are embedded in the first containing cavities, and the hardness parameters of the first supporting part and the hardness parameters of the second supporting part are different. The first support layer in the flexible cover plate provided by the embodiment of the application comprises the first support part and the second support part with different hardness parameters, so that better flexibility can be provided, the flexible cover plate can be ensured to have higher mechanical properties, and the service life of the flexible cover plate is prolonged.
Description
Technical Field
The application relates to the technical field of display equipment, in particular to a flexible cover plate, a display device and a preparation method of the flexible cover plate.
Background
With the rapid development of display technology, there is an increasing demand for display devices, and in order to further realize the requirement that the display devices can be conveniently stored or carried when not in use, flexible display devices that are foldable or rollable are attracting more and more attention.
The size of foldable or rollable flexible display devices is continuously reduced in view of space saving and portability, so that the design requirements for the terminal mechanism are higher and higher, which is a great challenge for the current display industry.
Disclosure of Invention
The embodiment of the application provides a flexible cover plate, a display device and a preparation method of the flexible cover plate, which can prolong the service life of the flexible cover plate.
In a first aspect, an embodiment of the present application provides a flexible cover plate, including a first supporting layer and a hardened coating that are stacked, where the first supporting layer includes a first supporting portion and a second supporting portion, the second supporting portion includes a plurality of first accommodating cavities that are distributed at intervals, the first supporting portion is embedded in each first accommodating cavity, and hardness parameters of the first supporting portion and the second supporting portion are different.
In some embodiments, the second support has a first surface facing toward or away from the hardened coating in a thickness direction of the flexible cover plate, and the first receiving cavity is formed by the first surface being recessed inward.
In some embodiments, the first support portion has a hardness that is greater than the hardness of the second support portion.
In some embodiments, the first support portion and the first receiving cavity are fixedly connected by an adhesive layer.
In some embodiments, the first support has a second surface in the thickness direction, the first surface being flush with the second surface.
In some embodiments, the second supporting portion includes a plurality of supporting sub-portions arranged at intervals, adjacent supporting sub-portions enclose to form a first accommodating cavity, and the first supporting portions and the supporting sub-portions are alternately distributed.
In some embodiments, the spacing between adjacent support sub-portions is the same as the spacing between adjacent first support portions.
In some embodiments, the flexible cover plate further includes a second supporting layer disposed on a side of the first supporting layer near the hardened coating, the second supporting layer includes a third supporting portion and a fourth supporting portion, the third supporting portion includes a plurality of second accommodating cavities distributed at intervals, the fourth supporting portion is embedded in each second accommodating cavity, and hardness parameters of the third supporting portion and the fourth supporting portion are different.
In some embodiments, the first support is the same material as the third support and the second support is the same material as the fourth support.
In some embodiments, the direction of extension of the orthographic projection of the first support portion in the hardened coating intersects the direction of extension of the orthographic projection of the third support portion in the hardened coating.
In some embodiments, the direction of extension of the orthographic projection of the first support portion on the hardened coating is perpendicular to the direction of extension of the orthographic projection of the third support portion on the hardened coating.
In a second aspect, an embodiment of the present application further provides a display device, including a flexible display panel and a flexible cover plate according to any one of the foregoing embodiments, where the flexible cover plate is disposed on a light-emitting surface side of the flexible display panel.
In a third aspect, an embodiment of the present application further provides a method for manufacturing a flexible cover plate, including:
providing a first material layer, wherein the first material layer comprises a second supporting part and a first accommodating cavity formed by recessing the second supporting part along the thickness direction;
and filling a first filling material in the first accommodating cavity, shaping the first filling material to form a first supporting part, forming a first supporting layer by forming a coplanar structure of the first supporting part and a second supporting part, wherein the hardness parameters of the second supporting part and the first supporting part are different.
In some embodiments, the method of making further comprises:
providing a second supporting layer, wherein the second supporting layer comprises a third supporting part and a fourth supporting part, the third supporting part comprises a plurality of second containing cavities which are distributed at intervals, the fourth supporting part is embedded in each second containing cavity, and the hardness parameters of the third supporting part and the fourth supporting part are different;
the first support layer and the second support layer are laminated and the first support portion and the second support portion intersect in the extending direction.
In some embodiments, the step of providing a second support layer comprises:
providing a second material layer, wherein the second material layer comprises a fourth supporting part and a second accommodating cavity formed by the fourth supporting part in a recessed manner along the thickness direction;
and filling a second filling material in the second accommodating cavity, shaping the second filling material to form a third supporting part, and forming a coplanar structure by the third supporting part and the fourth supporting part to form a second supporting layer.
The embodiment of the application provides a flexible cover plate, a display device and a preparation method of the flexible cover plate, wherein a first supporting layer in the flexible cover plate comprises a first supporting part and a second supporting part with different hardness parameters, so that the effects of hardness and flexibility can be simultaneously achieved, the flexible cover plate is ensured to have higher mechanical properties, and the service life of the flexible cover plate is prolonged.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are needed to be used in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.
FIG. 1 is a schematic view of a flexible cover plate according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of the structure at B-B in FIG. 1;
FIG. 3 is a schematic cross-sectional view of a flexible cover plate according to another embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of a flexible cover plate according to an embodiment of the present application;
FIG. 5 is a schematic view of a structure of a flexible cover plate according to an embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of the structure at C-C in FIG. 5;
fig. 7 is a schematic cross-sectional view of a display device according to an embodiment of the present application;
FIG. 8 is a flowchart of a method for manufacturing a flexible cover plate according to an embodiment of the present application;
fig. 9a to 9b are schematic process diagrams of a method for manufacturing a flexible cover plate according to an embodiment of the present application;
FIG. 10 is a flowchart of a method for manufacturing a flexible cover plate according to an embodiment of the present disclosure;
fig. 11a to 11b are schematic process diagrams of a preparation method of a flexible cover plate according to another embodiment of the present application.
FIG. 12 is a flowchart of a method for manufacturing a flexible cover plate according to an embodiment of the present disclosure;
fig. 13a to 13b are schematic process diagrams of a method for manufacturing a flexible cover plate according to an embodiment of the present application.
Marking:
1. a first support layer; 11. a first support portion; 12. a second supporting part; 121. a first accommodation chamber; 122. a support sub-section; 13. an adhesive layer; 14. glue layer structure
2. A second support layer; 21. a third supporting part; 22. a fourth supporting part; 221. second accommodation chamber
3. Hardening the coating;
4. a flexible display panel;
a1, a first surface; a2, a second surface;
x, a first direction; y, second direction.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the application only and not limiting. It will be apparent 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 the element.
Foldable or rollable display devices have been developed to meet the needs of users for large screens, large fields of view, and portability. The display device is required to be continuously switched between a contracted state and a flat state when in use so as to meet the requirements of different situations such as display and carrying. In this process, the flexible cover plate on the display device needs to be bent or folded for many times, but the existing flexible cover plate needs to meet the need of curling or folding, so that the mechanical performance of the flexible cover plate is usually not high, and the service life is low.
In order to solve the above-mentioned problems, referring to fig. 1 and 2, an embodiment of the present application provides a flexible cover plate, which includes a first supporting layer 1 and a hardened coating 3 that are stacked, wherein the first supporting layer 1 includes a first supporting portion 11 and a second supporting portion 12, the second supporting portion 12 includes a plurality of first accommodating cavities 121 that are distributed at intervals, the first supporting portion 11 is embedded in the first accommodating cavities 121, and hardness parameters of the first supporting portion 11 and the second supporting portion 12 are different.
The flexible cover plate comprises a first supporting layer 1 and a hardening coating 3, wherein the hardening coating 3 is arranged on the first supporting layer 1, the first supporting layer 1 and the hardening coating 3 are transparent film layers, the first supporting layer 1 is used for providing supporting effect for the flexible cover plate, and the hardening coating 3 is used for providing certain hardness for the flexible cover plate and guaranteeing the rigidity of the surface of the flexible cover plate. When the flexible cover plate is arranged on the flexible display panel to form a display device, the first supporting layer 1 is arranged adjacent to the flexible display panel, and light rays emitted by the flexible display panel are emitted into the hardening coating 3 through the first supporting layer 1 and then emitted out through the hardening coating 3 to form a corresponding display effect.
The first supporting layer 1 comprises a first supporting portion 11 and a second supporting portion 12, and the first supporting portion 11 and the second supporting portion 12 cooperate to form a film layer structure capable of covering the hardening coating 3 so as to separate and support the flexible display panel from the hardening coating 3. Wherein, the hardness parameters of the first supporting portion 11 and the second supporting portion 12 are different, that is, one of the first supporting portion 11 and the second supporting portion 12 has higher flexibility, and the other has higher hardness. Compared with the scheme that a single material is used for achieving the supporting effect in the traditional flexible cover plate, the first supporting layer 1 in the embodiment of the application at least comprises two materials with different hardness parameters, so that the hardness strength can be improved to a certain extent while the flexibility of the flexible cover plate is ensured.
In the embodiment of the present application, the hardness of the first supporting portion 11 may be greater than the hardness of the second supporting portion 12, or the hardness of the second supporting portion 12 may be greater than the hardness of the first supporting portion 11; the second supporting portion 12 may completely cover the first supporting portion 11, or may cover only a part of the structure of the first supporting portion 11, and the specific structural relationship between the first supporting portion 11 and the second supporting portion 12 is not limited in the embodiment of the present application.
The first support layer 1 in the flexible cover plate provided by the embodiment of the application comprises the first support part 11 and the second support part 12 with different hardness parameters, so that the effects of simultaneously taking the hardness and the flexibility into consideration can be achieved, the flexible cover plate can be ensured to have higher mechanical properties, and the service life of the flexible cover plate is prolonged.
In some embodiments, the second support 12 has a first surface A1 facing toward or away from the hardened coating 3 in the thickness direction of the flexible cover plate, and the first receiving cavity 121 is formed by the first surface A1 being recessed inward.
As shown in fig. 2, the first surface A1 may be a surface of the second support 12 in contact with the hardened coating 3; as shown in fig. 3, the first surface A1 may be a surface of the second support portion 12 facing away from the hardened coating 3, that is, a surface of the second support portion 12 contacting the flexible display panel. The first accommodation chamber 121 is formed by the first surface A1 being recessed inward in the thickness direction, and the first supporting portion 11 is embedded in the first accommodation chamber 121. Wherein the second support 12 is capable of functioning to carry the first support 11 while at the same time being used to ensure the reliability of the structure of the first support layer 1
In some alternative embodiments, the plurality of first receiving cavities 121 extend along the length direction of the flexible cover plate and are arranged side by side along the width direction of the flexible cover plate; alternatively, the plurality of first receiving chambers 121 extend in the width direction of the flexible cover plate and are disposed side by side in the length direction of the flexible cover plate.
In the embodiment of the present application, the first receiving cavity 121 may be formed after the second supporting portion 12 is formed, or may be formed before the second supporting portion 12, which is not limited. Illustratively, a carrier is provided first, a plurality of first supporting portions 11 are formed on the carrier at intervals, then second supporting portions 12 are formed on the carrier by coating and curing or the like, the height of the second supporting portions 12 is greater than the height of the first supporting portions 11, and then the first supporting portions 11 and the second supporting portions 12 are separated from the carrier, thereby obtaining the first supporting layer 1 in the embodiment of the present application.
In some embodiments, the first support 11 has a hardness that is greater than the hardness of the second support 12.
The first accommodation chamber 121 is formed by the first surface A1 being recessed inward in the thickness direction, and the first supporting portion 11 is embedded in the first accommodation chamber 121. The embodiment of the present application sets the hardness of the first supporting portion 11 to be greater than that of the second supporting portion 12, so that the structural stability of the first receiving chamber 121 can be ensured. Meanwhile, the side of the second supporting portion 12 opposite to the first surface A1 can have stronger flexibility so as to meet the folding or curling requirement, and the practicality is stronger. Alternatively, the recess height of the first receiving chamber 121 is 10 μm.
In some embodiments, as shown in fig. 2 and 3, the first supporting part 11 and the first receiving cavity 121 are fixedly connected through the adhesive layer 13.
The first supporting portion 11 and the second supporting portion 12 are made of materials with different hardness parameters, and the first supporting portion 11 and the second supporting portion 12 may be separated from each other after the curing process. Therefore, in order to solve this problem, the embodiment of the present application adds the adhesive layer 13, and coats the adhesive layer 13 on the bottom of the first accommodating cavity 121, so that the adhesive layer 13 can fix the first supporting portion 11 and the second supporting portion 12, thereby ensuring that the structure of the finally formed first supporting layer 1 is stable, and ensuring that the first supporting portion 11 and the second supporting portion 12 cannot be separated when the first supporting layer 1 is folded or curled. Alternatively, the adhesive layer 13 is formed using a pressure-sensitive adhesive material and the thickness of the adhesive layer 13 is 3 μm.
In some embodiments, as shown in fig. 2 and 3, the first supporting portion 11 has a second surface A2 in the thickness direction, and the first surface A1 is flush with the second surface A2.
As is clear from the foregoing, the first surface A1 is a surface of the second support portion 12 in contact with the hardened coating 3, or a surface of the second support portion 12 in contact with the flexible display panel. In order to ensure the connection reliability between the first supporting layer 1 and the hardened coating 3 or the flexible display panel, the second surface A2 of the first supporting portion 11 is set to be flush with the first surface A1, that is, the thickness of the first supporting portion 11 is the same as the concave height of the first accommodating cavity 121, and the first surface A1 and the second surface A2 together form a flat surface, so that the connection between the first supporting layer 1 and the hardened coating 3 or the flexible display panel is facilitated.
In some embodiments, referring to fig. 4, the second supporting portion 12 includes a plurality of supporting sub-portions 122 arranged at intervals, the adjacent supporting sub-portions 122 enclose a first accommodating cavity 121, and the first supporting portions 11 and the supporting sub-portions 122 are alternately distributed.
The second supporting portion 12 has a structure similar to that of the first supporting portion 11, and is a multi-segment strip structure. The extending direction and the arrangement direction of the support sub-portions 122 and the first support portion 11 are the same, i.e. the plurality of support sub-portions 122 may extend along the length direction of the flexible cover plate and be arranged side by side along the width direction of the flexible cover plate; alternatively, the plurality of support sub-portions 122 extend in the width direction of the flexible cover plate and are arranged side by side in the length direction of the flexible cover plate. Alternatively, the first supporting portion 11 has the same thickness as the supporting sub-portion 122.
The plurality of support sub-portions 122 and the plurality of first support portions 11 are arranged in a staggered manner, and the design is beneficial to adjusting the relation between the flexibility and the hardness strength of the flexible cover plate, so that the mechanical strength of the flexible cover plate is further improved and the service life of the flexible cover plate is prolonged while the folding or curling function of the flexible cover plate is realized. It can be understood that in the embodiment of the present application, a glue layer structure 14 is required to be disposed between the first supporting layer 1 and the hardening coating 3, for fixing the first supporting portion 11 and the second supporting portion 12, so as to ensure structural reliability between the first supporting portion 11 and the second supporting portion 12.
In some embodiments, the spacing between adjacent support sub-portions 122 is the same as the spacing between adjacent first support portions 11.
The distance between adjacent support sub-portions 122 is the minimum distance between adjacent support sub-portions 122, and is the width dimension of a single first support portion 11; the distance between the adjacent first supporting portions 11 is the minimum distance between the adjacent first supporting portions 11, and is also the width dimension of the single supporting sub-portion 122. The width dimension of the first supporting part 11 is set to be the same as the width dimension of the supporting sub-part 122, so that the coordination and unification of the flexibility and the hardness strength of the flexible cover plate are realized, the folding or curling performance of the flexible cover plate is ensured, and the service life is prolonged.
In some embodiments, referring to fig. 5 and 6, the flexible cover plate further includes a second supporting layer 2 disposed on a side of the first supporting layer 1 near the hardened coating 3, the second supporting layer 2 includes a third supporting portion 21 and a fourth supporting portion 22, the third supporting portion 21 includes a plurality of second accommodating cavities 221 that are distributed at intervals, the fourth supporting portion 22 is embedded in each second accommodating cavity 221, and hardness parameters of the third supporting portion 21 and the fourth supporting portion 22 are different.
It will be appreciated that the third support 21 is similar in structure to the first support 11 and the fourth support 22 is similar in structure to the second support 12. For the structures of the third supporting portion 21 and the fourth supporting portion 22, reference may be made to the descriptions of the first supporting portion 11 and the second supporting portion 12 in the foregoing embodiments, and the description of the embodiments of the present application is omitted here.
According to the embodiment of the application, the second support layer 2 is additionally arranged on the basis of the first support layer 1, so that the reliability of the flexible cover plate is further enhanced. Meanwhile, the second supporting layer 2 adopts a structure similar to that of the first supporting layer 1, so that the first supporting layer 1 and the second supporting layer 2 can be formed by adopting the same preparation process, thereby reducing the production cost. Alternatively, the first support layer 1 and the second support layer 2 have the same thickness.
In some embodiments, the first support 11 is the same material as the third support 21, and the second support 12 is the same material as the fourth support 22. Optionally, one of the first support 11 and the second support 12 comprises colorless polyimide (Colorless Polyimide CPI) and/or polyethylene terephthalate (polyethylene terephthalate PET); the other includes ultra thin glass (Ultra Thin Glass UTG). Wherein, the ultrathin glass has poorer folding or curling performance but higher hardness strength; whereas colorless polyimide and polyethylene terephthalate have strong flexibility by themselves, but poor hardness. The two types of materials are matched to form the first support layer 1 and the second support layer 2 which give consideration to flexibility and hardness strength, so that the mechanical property of the flexible cover plate can be improved to a greater extent.
In some examples, the direction of extension of the orthographic projection of the first support 11 on the hardened coating 3 intersects the direction of extension of the orthographic projection of the third support 21 on the hardened coating 3.
Illustratively, the orthographic projections of the first support 11 on the hardened coating 3 extend in a first direction X and are arranged side by side in a second direction Y; the orthographic projection of the third supporting portion 21 on the hardened coating 3 extends along the second direction Y and is arranged side by side along the first direction X. In this case, the first support layer 1 can improve the hardness strength of the flexible cover plate in the first direction X and ensure the flexibility of the flexible cover plate in the second direction Y; the second support layer 2 can improve the hardness strength of the flexible cover plate in the second direction Y and ensure the flexibility of the flexible cover plate in the first direction X.
The flexible cover plate in the embodiment of the application can simultaneously improve the hardness strength of the flexible cover plate in the first direction X and the second direction Y, and simultaneously give consideration to the flexibility of the flexible cover plate in the first direction X and the second direction Y, so that the stability and reliability of the flexible cover plate everywhere can be ensured.
In some embodiments, the direction of extension of the orthographic projection of the first support 11 on the hardened coating 3 is perpendicular to the direction of extension of the orthographic projection of the third support 21 on the hardened coating 3. The first support 11 extends in a first direction X, and the third support 21 extends in a second direction Y, the first direction X being perpendicular to the second direction Y. Optionally, the first direction X and the second direction Y are a length direction and a width direction of the flexible cover plate, respectively.
In a second aspect, referring to fig. 7, an embodiment of the present application provides a display device, which includes a flexible display panel 4 and a flexible cover plate according to any of the foregoing embodiments, wherein the flexible cover plate is disposed on a light-emitting surface side of the flexible display panel 4.
The display device provided by the embodiment of the application has the beneficial effects of the flexible cover plate provided by the embodiment of the application, and the detailed description of the flexible cover plate in the above embodiments can be referred to specifically, and the detailed description of the embodiment is omitted here.
In a third aspect, referring to fig. 8 and 9, an embodiment of the present application provides a method for manufacturing a flexible cover plate, including:
s100, providing a first material layer, wherein the first material layer comprises a second supporting part and a first accommodating cavity formed by recessing the second supporting part along the thickness direction.
S110, filling a first filling material in the first accommodating cavity, shaping the first filling material to form a first supporting part, forming a first supporting layer by the first supporting part and a second supporting part which are coplanar, wherein the hardness parameters of the second supporting part and the first supporting part are different.
In step S100, the first material layer includes a second supporting portion 12 and a first accommodating cavity 121, where the second supporting portion 12 includes a plurality of first accommodating cavities 121, and the plurality of first accommodating cavities 121 are distributed side by side for carrying the first supporting portion 11. Before step S100, the first material layer needs to be processed to form the second support portion 12 and the first accommodating cavity 121 with fixed shapes and dimensions. As for the preparation process of the first material layer, the embodiment of the present application is not limited, and the second supporting part 12 may be formed by a process such as curing, and the first receiving chamber 121 may be formed by CNC processing, for example.
In step S110, the first filling material is used to form the first supporting portion 11 of the first supporting layer 1, and the hardness parameters of the first supporting portion 11 and the second supporting portion 12 are different, that is, the hardness of the first supporting portion 11 may be greater than the hardness of the second supporting portion 12 or may be less than the hardness of the second supporting portion 12. The first filling material is filled in the first accommodating cavity 121, and optionally, the first filling material is coated in the first accommodating cavity 121 through an ultrathin glue layer to fix the first supporting portion 12.
According to the embodiment of the application, different materials are adopted to jointly prepare the first support layer 1, so that the effects of simultaneously taking the hardness and the flexibility into consideration can be achieved, the flexible cover plate is ensured to have higher mechanical properties, and the service life of the flexible cover plate is prolonged.
In some embodiments, referring to fig. 10 and 11, the method for manufacturing the flexible cover plate further includes:
s120, providing a second supporting layer, wherein the second supporting layer comprises a third supporting part and a fourth supporting part, the fourth supporting part comprises a plurality of second containing cavities which are distributed at intervals, the third supporting part is embedded in each second containing cavity, and the hardness parameters of the third supporting part and the fourth supporting part are different.
S130, stacking the first support layer and the second support layer and intersecting the extending direction of the first support portion and the extending direction of the third support portion.
In step S120, the second support layer 2 includes the third support portion 21 and the fourth support portion 22 with different hardness parameters, and the same as the first support layer 1, the second support layer 2 may also have both hardness and flexibility, so as to further improve the mechanical properties and the service life of the flexible cover plate. Alternatively, the material of the third support portion 21 is the same as that of the first support portion 11, and the material of the fourth support portion 22 is the same as that of the second support portion 12.
In step S130, the first support layer 1 and the second support layer 2 are stacked, and the extending direction of the third support portion 21 intersects with the extending direction of the first support portion 11. The design can improve the hardness strength of the flexible cover plate in different directions, and meanwhile, the flexibility of the flexible cover plate in different directions can be considered, so that the stability and reliability of the flexible cover plate in all positions are ensured.
In some embodiments, referring to fig. 12 and 13, in step S120, the method includes:
s121, providing a second material layer, wherein the second material layer comprises a fourth supporting part and a second accommodating cavity formed by the fourth supporting part in a concave manner along the thickness direction.
S122, filling a second filling material in the second accommodating cavity, shaping the second filling material to form a third supporting part, and forming a second supporting layer by the third supporting part and the fourth supporting part in a coplanar manner.
In step S121 and step S122, the preparation method of the second supporting layer 2 is similar to the preparation method of the first supporting layer 1, and the embodiments of the present application are not described herein again. It should be noted that the preparation process of the first support layer 1 and the second support layer 2 is not limited in the embodiment of the present application. Illustratively, the first support layer 1 is first prepared and formed, and then the second support layer 2 is prepared and formed on the surface of the first support layer 1.
Although the embodiments of the present application are disclosed above, the embodiments are only used for the convenience of understanding the present application, and are not intended to limit the present application. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the present disclosure as defined by the appended claims.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, substitution of other connection modes described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present application, and they should be included in the scope of the present application.
Claims (12)
1. The flexible cover plate is characterized by comprising a first supporting layer and a hardening coating, wherein the first supporting layer is arranged in a stacked mode, the first supporting layer comprises a first supporting part and a second supporting part, the second supporting part comprises a plurality of first containing cavities which are distributed at intervals, the first supporting parts are embedded in the first containing cavities, and hardness parameters of the first supporting part and the second supporting part are different;
the flexible cover plate further comprises a second supporting layer arranged on one side, close to the hardening coating, of the first supporting layer, the second supporting layer comprises a third supporting portion and a fourth supporting portion, the third supporting portion comprises a plurality of second containing cavities which are distributed at intervals, the fourth supporting portion is embedded in each second containing cavity, and hardness parameters of the third supporting portion and the fourth supporting portion are different;
the extending direction of the orthographic projection of the first supporting part on the hardening coating is intersected with the extending direction of the orthographic projection of the third supporting part on the hardening coating.
2. The flexible cover sheet according to claim 1, wherein the second support portion has a first surface facing toward or away from the hardened coating in a thickness direction of the flexible cover sheet, and the first accommodation chamber is formed by the first surface being recessed inward.
3. The flexible cover sheet of claim 2 wherein the first support portion has a hardness greater than the second support portion.
4. The flexible cover sheet of claim 2, wherein the first support portion and the first receiving cavity are fixedly connected by an adhesive layer.
5. The flexible cover sheet of claim 2, wherein the first support portion has a second surface in the thickness direction, the first surface being flush with the second surface.
6. The flexible cover plate according to claim 1, wherein the second supporting portion includes a plurality of supporting sub-portions arranged at intervals from each other, adjacent supporting sub-portions enclose to form the first accommodating cavity, and the first supporting portions are alternately arranged with the supporting sub-portions.
7. The flexible cover sheet of claim 6 wherein the spacing between adjacent ones of the support sub-portions is the same as the spacing between adjacent ones of the first support portions.
8. The flexible cover sheet of claim 1, wherein the first support portion is the same material as the third support portion and the second support portion is the same material as the fourth support portion.
9. The flexible cover sheet of claim 1, wherein an extension direction of the orthographic projection of the first support portion on the hardened coating layer is perpendicular to an extension direction of the orthographic projection of the third support portion on the hardened coating layer.
10. A display device comprising a flexible display panel and the flexible cover plate according to any one of claims 1 to 9, wherein the flexible cover plate is disposed on a light-emitting surface side of the flexible display panel.
11. A method of making a flexible cover sheet comprising:
providing a first material layer, wherein the first material layer comprises a second supporting part and a first accommodating cavity formed by recessing the second supporting part along the thickness direction;
filling a first filling material in the first accommodating cavity, shaping the first filling material to form a first supporting part, forming a first supporting layer by the first supporting part and the second supporting part in a coplanar manner, wherein the hardness parameters of the second supporting part and the first supporting part are different;
providing a second supporting layer, wherein the second supporting layer comprises a third supporting part and a fourth supporting part, the third supporting part comprises a plurality of second containing cavities which are distributed at intervals, the fourth supporting part is embedded in each second containing cavity, and the hardness parameters of the third supporting part and the fourth supporting part are different;
the first support layer and the second support layer are laminated and the first support portion and the third support portion intersect in the extending direction.
12. The method of claim 11, wherein the step of providing the second support layer comprises:
providing a second material layer, wherein the second material layer comprises a fourth supporting part and a second accommodating cavity formed by the fourth supporting part in a recessed manner along the thickness direction;
and filling a second filling material in the second accommodating cavity, shaping the second filling material to form a third supporting part, and forming a second supporting layer by the third supporting part and the fourth supporting part in a coplanar manner.
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| CN202210156978.1A CN114550588B (en) | 2022-02-21 | 2022-02-21 | Flexible cover plate, display device and preparation method of flexible cover plate |
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| CN202210156978.1A CN114550588B (en) | 2022-02-21 | 2022-02-21 | Flexible cover plate, display device and preparation method of flexible cover plate |
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| CN115083274A (en) * | 2022-06-17 | 2022-09-20 | 昆山国显光电有限公司 | Flexible 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 |
| KR20240108004A (en) * | 2022-12-30 | 2024-07-09 | 엘지디스플레이 주식회사 | Cover module and display device including same |
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| CN114550588A (en) | 2022-05-27 |
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