CN114582239A - 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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- CN114582239A CN114582239A CN202210275767.XA CN202210275767A CN114582239A CN 114582239 A CN114582239 A CN 114582239A CN 202210275767 A CN202210275767 A CN 202210275767A CN 114582239 A CN114582239 A CN 114582239A
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- 230000004048 modification Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
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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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Abstract
The application provides a preparation method of flexible apron, display device and flexible apron, flexible apron is including the supporting layer and the hardening coating of range upon range of setting, the supporting layer includes this somatic part and bonding portion, this somatic part is including the first surface towards the hardening coating to and by the holding tank that the first surface is sunken to form along flexible apron thickness direction, bonding portion inlays in each holding tank, the diapire of holding tank is connected with the hardening coating through bonding portion, and the hardness parameter of part bonding portion is greater than the hardness parameter of this somatic part. Be provided with the holding tank on the supporting layer in the flexible apron of this application embodiment, the holding tank is embedded to have bonding portion, and bonding portion can improve the anti scratch performance on flexible apron surface when realizing that holding tank diapire is connected with the sclerosis coating, improves the reliability of flexible apron.
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, the demand of people for display devices is continuously increasing, and in order to further meet the demand that the display devices can be conveniently stored or carried when not in use, foldable or rollable flexible display devices attract more and more attention.
At present, the size of the foldable or rollable flexible display device is continuously reduced from the aspects of space saving and portability, so the design requirement for the terminal mechanism is higher and higher, and the flexible display device is a great challenge for the display industry at present.
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, and the service life of the flexible cover plate can be prolonged.
In a first aspect, the embodiment of the present application provides a flexible cover plate, including supporting layer and the hardening coating of range upon range of setting, the supporting layer includes body portion and bonding portion, and body portion includes the first surface towards the hardening coating to and by the holding tank that the first surface is sunken to form along flexible cover plate thickness direction, bonding portion inlays in each holding tank, the diapire of holding tank is connected with the hardening coating through bonding portion, and the hardness parameter of part bonding portion is greater than the hardness parameter of body portion.
In some embodiments, the bonding part comprises a first bonding part and a second bonding part which are stacked along the thickness direction of the flexible cover plate, and the first bonding part is connected with the bottom wall through the second bonding part; the hardness parameter of the first bonding part is greater than that of the body part and greater than that of the second bonding part.
In some embodiments, the hardness parameter of the second bonding portion is less than the hardness parameter of the body portion.
In some embodiments, a gap is formed between the first bonding portion and the side wall of the accommodating groove, the bonding portion further includes a third bonding portion disposed in the gap, the first bonding portion is connected to the side wall through the third bonding portion, and a hardness parameter of the first bonding portion is greater than a hardness parameter of the third bonding portion.
In some embodiments, the hardness parameter of the third bonding portion is less than the hardness parameter of the body portion.
In some embodiments, the third bonding portion is disposed around an outer periphery of the first bonding portion.
In some embodiments, the hardened coating includes a first hardened portion and a second hardened portion, the first hardened portion includes a plurality of receiving portions distributed at intervals, the second hardened portion is embedded in each receiving portion to form a film structure covering the supporting layer, and a hardness parameter of the second hardened portion is greater than that of the first hardened portion.
In some embodiments, the third bonding portion at least partially overlaps the second hardened portion in an orthographic projection of the hardened coating.
In some embodiments, the third bonding portion is located within the outer profile of the second hardened portion in an orthographic projection of the hardened coating.
In some embodiments, the third bonding portion at least partially overlaps the second bonding portion at an orthographic projection of the hardened coating, the receiving portion penetrates the hardened coating, the second hardening portion is connected to the second bonding portion through the third bonding portion, and at least a portion of the first hardening portion is connected to the second bonding portion through the first bonding portion.
In some embodiments, the first adhesive portion comprises a second surface facing away from the bottom wall, and the third adhesive portion comprises a third surface facing away from the bottom wall, the second surface being flush with the third surface.
In some embodiments, the second surface is flush with the first surface.
In some embodiments, the bonding portion is a plurality of bonding portions, and the plurality of bonding portions are arranged at intervals along the first direction.
In some embodiments, the plurality of bonding portions are spaced apart along a second direction, and the first direction intersects the second direction.
In a second aspect, an embodiment of the present application further provides a display device, which includes a flexible display panel and the flexible cover plate of any one of the foregoing embodiments, where the flexible cover plate is disposed on one side of the light emitting surface 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 first surface positioned on one side of the thickness direction of the first material layer and a containing groove formed by the first surface in a concave mode;
filling a bonding material in the accommodating groove, and shaping the bonding material to form a bonding part, wherein the hardness parameter of part of the bonding part is greater than that of the first material layer;
and forming a hardened coating on the first surface, wherein the hardened coating is connected with the bottom wall of the accommodating groove through the bonding part.
In some embodiments, filling the adhesive material in the receiving groove and setting the adhesive material to form the adhesive part includes:
filling a second bonding material in the accommodating groove, and shaping the second bonding material to form a second bonding part;
and filling a first bonding material on the second bonding part, and forming the first bonding material into a shape to form a first bonding part, wherein the hardness parameter of the first bonding part is greater than that of the second bonding part.
In some embodiments, filling the second adhesive material with the first adhesive material and setting the first adhesive material to form the first adhesive part includes: a gap is formed between the shaped first bonding part and the side wall of the accommodating groove;
pack the bonding material in the holding tank to form bonding portion with the bonding material design, still include:
and filling a third bonding material in a gap between the first bonding part and the side wall of the accommodating groove, and forming the third bonding material into a shape to form a third bonding part, wherein the hardness parameter of the first bonding part is greater than that of the third bonding part.
The embodiment of the application provides a flexible cover plate, a display device and a manufacturing method of the flexible cover plate, wherein a containing groove is formed in a supporting layer in the flexible cover plate, a bonding part is embedded in the containing groove, the bonding part can improve the scratch resistance of the surface of the flexible cover plate and improve the reliability of the flexible cover plate when the bottom wall of the containing groove is connected with a hardened coating.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible cover plate provided in an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view taken along line B-B of FIG. 1;
FIG. 3 is a schematic structural diagram of a support layer in another flexible cover provided by an embodiment of the present application;
FIG. 4 is a schematic cross-sectional view taken at C-C in FIG. 3;
FIG. 5 is a schematic cross-sectional view of another flexible cover according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a support layer in a flexible cover plate according to an embodiment of the present application;
fig. 7 is a schematic cross-sectional view illustrating a display device according to an embodiment of the present disclosure;
FIG. 8 is a flow chart of a method for manufacturing a flexible cover according to an embodiment of the present application;
fig. 9a to 9c 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 flow chart of yet another method for making a flexible cover according to the embodiments of the present application;
fig. 11a to 11c are schematic process diagrams of a method for manufacturing a flexible cover plate according to an embodiment of the present disclosure.
Description of the labeling:
1. a support layer; 11. a body portion; 111. accommodating grooves; 1111. a bottom wall; 1112. a side wall; 12. an adhesive portion; 121. a first bonding portion; 122. a second bonding portion; 123. a third bonding portion;
2. hardening the coating; 21. a first hardened portion; 211. an accommodating portion; 22. a second hardened portion;
3. a flexible display panel;
a1, a first surface; a2, a second surface; a3, third 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 objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be 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 present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.
In order to meet the requirements of users for large screens, large visual fields and convenience in carrying, foldable or rollable display devices have come to be produced. When the display device is used, the display device needs to be continuously switched between a contraction state and an expansion state so as to meet the requirements of different situations such as display, carrying and the like. The existing flexible cover plate needs to meet the requirements of curling or folding, so that the mechanical property of the existing flexible cover plate is usually not high, the surface is easy to scratch, and the folding or curling service life of the product is short.
In order to solve the above problem, in one aspect, referring to fig. 1 and fig. 2, an embodiment of the present application provides a flexible cover plate, including a supporting layer 1 and a hardened coating 2, which are stacked, where the supporting layer 1 includes a body portion 11 and an adhesive portion 12, the body portion 11 includes a first surface a1 facing the hardened coating 2, and a receiving groove 111 formed by the first surface a1 being recessed along a thickness direction of the flexible cover plate, the adhesive portion 12 is embedded in each receiving groove 111, a bottom wall 1111 of the receiving groove 111 is connected to the hardened coating 2 through the adhesive portion 12, and a hardness parameter of a portion of the adhesive portion 12 is greater than a hardness parameter of the body portion 11.
The flexible cover plate comprises a support layer 1 and a hardening coating 2, wherein the hardening coating 2 is arranged on the support layer 1, and the support layer 1 and the hardening coating 2 are transparent film layers. Wherein, the supporting layer 1 is used for providing a supporting function for the flexible cover plate, and the hardening coating 2 is used for improving the surface rigidity of the flexible cover plate. When the flexible cover plate is arranged on the flexible display panel 3 to form the display device, the support layer 1 is arranged adjacent to the flexible display panel 3, light emitted by the flexible display panel 3 is emitted into the hardened coating 2 through the support layer 1, and then is emitted out through the hardened coating 2 to form a corresponding display effect.
It will be appreciated that although the hardness of the hardened coating 2 is greater than that of the support layer 1, the scratch resistance of the flexible cover sheet may be improved to some extent. However, the thickness of the hardened coating 2 is usually thin, and the hardness parameter of the hardened coating 2 is not too large to satisfy the curling or folding effect, so that the requirement of the scratch resistance of the flexible cover plate is difficult to satisfy by relying on the hardened coating 2 alone.
In order to improve the scratch resistance of the flexible cover plate, the embodiment of the application changes the structure of the support layer 1, specifically: the supporting layer 1 includes a main body 11 and an adhesive portion 12, and the main body 11 may be made of Colorless Polyimide (Colorless Polyimide CPI). The body part 11 includes a first surface a1 and a receiving groove 111 concavely formed by the first surface a1, the first surface a1 is a surface of the body part 11 contacting the hardened coating 2, and the hardened coating 2 may be directly formed on the first surface a 1. The adhesive part 12 is arranged in the accommodating groove 111, the adhesive part 12 has certain viscosity, so that the bottom wall 1111 of the accommodating groove 111 can be connected with the hardened coating 2, and meanwhile, the hardness of part of the adhesive part 12 is greater than that of the body part 11, so that the anti-scratching capability of the flexible cover plate at the corresponding position can be improved due to the adhesive part 12, and the reliability of the flexible cover plate is improved.
The number of the accommodating grooves 111 is plural and the accommodating grooves are spaced from each other, that is, the main body 11 is present between the adjacent bonding portions 12. The body part 11 between the adjacent bonding parts 12 can meet the curling or folding requirements of the flexible cover plate, so that the embodiment of the application can improve the scratch resistance of the flexible cover plate on the premise of meeting the curling or folding requirements. In addition, the number of shapes and the arrangement of the bonding portions 12 are not limited in the embodiments of the present application.
Be provided with holding tank 111 on supporting layer 1 in the embodiment of this application, holding tank 111 is embedded to have bonding portion 12, and bonding portion 12 can improve the anti-scratch performance on flexible apron surface when realizing that holding tank 111 diapire 1111 is connected with hardened coating 2, improves the reliability of flexible apron.
In some embodiments, referring to fig. 2, the bonding portion 12 includes a first bonding portion 121 and a second bonding portion 122 stacked along the thickness direction of the flexible cover, and the first bonding portion 121 is connected to the bottom wall 1111 through the second bonding portion 122; the hardness parameter of the first bonding portion 121 is greater than the hardness parameter of the main body 11 and greater than the hardness parameter of the second bonding portion 122.
The first adhesive portion 121 is adhered to the cured coating 2, and the second adhesive portion 122 is adhered to the bottom wall 1111 of the accommodating groove 111. The first bonding part 121 is closer to the surface of the flexible cover plate than the second bonding part 122, and the hardness parameter is greater than that of the body part 11, so that the scratch resistance of the surface of the flexible cover plate can be improved; and the second bonding portion 122 is used for connecting first bonding portion 121 and diapire 1111, and the hardness parameter is less, and the existence of second bonding portion 122 can play the effect of the interact power between first bonding portion 121 and diapire 1111 that slows down when flexible apron receives the scraping, reduces the risk that holding tank 111 takes place deformation, improves the reliability of flexible apron.
In some alternative embodiments, the hardness parameter of the second bonding portion 122 is smaller than the hardness parameter of the body portion 11.
The second bonding portion 122 is used for buffering the interaction force between the first bonding portion 121 and the bottom wall 1111, and in order to enhance the buffering effect of the second bonding portion 122, the hardness parameter of the second bonding portion 122 is set to be smaller than the hardness parameters of the main body portion 11 and the first bonding portion 121, so that the action force generated by external scraping on the accommodating groove 111 is further buffered, and the risk of deformation of the accommodating groove is reduced. Alternatively, the second adhesive part 122 may adopt a high-transmittance flexible adhesive, and exemplarily, the first adhesive part 121 includes at least one of a thermosetting adhesive and a photosensitive adhesive (Ultraviolet Rays UV), and the second adhesive part 122 includes at least one of a Pressure Sensitive Adhesive (PSA), a photosensitive adhesive, and an Optical adhesive (OCR).
Since the ratio of the internal components of the material such as the photosensitive paste determines its own hardness parameter, the ratio of the internal components of the material such as the photosensitive paste can be changed to satisfy the hardness requirements of the first adhesive portion 121 and the second adhesive portion 122.
In some embodiments, referring to fig. 3 and 4, a gap is formed between the first bonding portion 121 and the accommodating groove 111, the bonding portion 12 further includes a third bonding portion 123 disposed in the gap, the first bonding portion 121 is connected to the sidewall 1112 through the third bonding portion 123, and a hardness parameter of the first bonding portion 121 is greater than a hardness parameter of the third bonding portion 123.
The receiving groove 111 is formed by the side wall 1112 and the bottom wall 1111 together, and the side wall 1112 may be formed by a plurality of sub-walls connected end to end. The number of the sub-walls is determined according to practical situations, and the size and shape of the accommodating groove 111 are determined by the shape and height of the side wall 1112, which is not limited in the embodiments of the present application.
When the flexible cover plate is used, the scraping force applied to the flexible cover plate from the outside can simultaneously affect the side wall 1112 and the bottom wall 1111 through the first bonding portion 121, resulting in the risk of deformation of the accommodating groove 111. In order to reduce the influence on the side walls 1112 of the accommodating groove 111, in the embodiment of the present application, the first bonding portion 121 and the side walls 1112 are disposed at an interval, and the third bonding portion 123 is filled between the first bonding portion 121 and the side walls 1112, and the hardness of the third bonding portion 123 is smaller than that of the first bonding portion 121, so that the buffer effect on the side walls 1112 is achieved.
In some alternative embodiments, the hardness parameter of the third bonding portion 123 is smaller than the hardness parameter of the body portion 11.
It can be understood that the hardness parameter of the third bonding portion 123 is set to be smaller than the hardness parameters of the main body 11 and the first bonding portion 121, so as to further buffer the acting force of the external scraping on the accommodating groove 111 and reduce the risk of deformation thereof. The third bonding portion 123 and the second bonding portion 122 have similar functions and effects, and therefore, the two portions can be made of the same material, thereby reducing the material cost; or the two materials can be prepared respectively by adopting different materials, and the embodiment of the application does not limit the preparation.
In some embodiments, the third adhesive portion 123 is disposed around an outer circumferential side of the first adhesive portion 121.
In the embodiment of the present application, the third bonding portion 123 is disposed around the outer periphery of the first bonding portion 121, that is, the orthographic projection of the third bonding portion 123 on the cured coating 2 is an annular structure. This design can completely separate the first adhesive portion 121 from the sidewall 1112, and avoid contact between the first adhesive portion 121 and the sidewall 1112, thereby further improving the cushioning effect of the third adhesive portion 123. Optionally, an orthographic projection of the second bonding portion 122 on the cured coating 2 covers an orthographic projection of the third bonding portion 123 on the cured coating 2, that is, the third bonding portion 123 is connected to the bottom wall 1111 through the second bonding portion 122. Alternatively, the orthographic projection of the third bonding portion 123 on the cured coating 2 surrounds the orthographic projection of the second bonding portion 122 on the cured coating 2, that is, the third bonding portion 123 surrounds both the first bonding portion 121 and the second bonding portion 122 and is directly connected to the bottom wall 1111.
In some embodiments, referring to fig. 5, the hardened coating 2 includes a first hardened portion 21 and a second hardened portion 22, the first hardened portion 21 includes a plurality of receiving portions 211 distributed at intervals, the second hardened portion 22 is embedded in each receiving portion 211 to form a film structure covering the supporting layer 1, and a hardness parameter of the second hardened portion 22 is greater than a hardness parameter of the first hardened portion 21.
The hardened coating 2 includes a first hardened portion 21 and a second hardened portion 22 having different hardnesses, and the first hardened portion 21 is provided with a receiving portion 211 for filling the second hardened portion 22, wherein the receiving portion 211 may or may not penetrate the first hardened portion 21. Meanwhile, when the accommodating portion 211 does not penetrate through the first hardened portion 21, the accommodating portion 211 may be located on a side of the first hardened portion 21 away from the support layer 1, or on a side of the first hardened layer close to the support layer 1, which is not limited in the embodiment of the present application.
In some embodiments, the third bonding portion 123 at least partially overlaps the second hardened portion 22 in an orthographic projection of the hardened coating 2.
As can be seen from the foregoing, the third bonding portion 123 is disposed in the gap between the first bonding portion 121 and the sidewall 1112, and is used for buffering the interaction force therebetween, and the first bonding portion 121 has a larger hardness parameter, which can improve the scratch resistance at the corresponding region; the third bonding portion 123 has a smaller hardness parameter, and thus has a weaker scratch resistance.
In order to improve the scratch resistance of the area corresponding to the third bonding portion 123, the second hardening portion 22 is additionally arranged, the second hardening portion 22 is located in the accommodating portion 211 of the first hardening portion 21, and the orthographic projection of the third bonding portion 123 on the hardened coating 2 is at least partially overlapped with the second hardening portion 22, namely the third bonding portion 123 at least partially corresponds to the second hardening portion 22, and by means of the design, the scratch resistance of the area corresponding to the third bonding portion 123 can be improved, and the problem of reliability of the area due to the fact that the hardness of the third bonding portion 123 is small is avoided.
It is understood that the first hardening portion 21 and the second hardening portion 22 each include a plurality of components, and the hardness of the first hardening portion 21 and the second hardening portion 22 can be adjusted by changing the types and ratios of the components in the first hardening portion 21 and the second hardening portion 22, which is not limited in the embodiments of the present application.
In some alternative embodiments, the orthographic projection of the third bonding portion 123 on the hardened coating 2 is located within the outer contour of the second hardened portion 22. The second hardened portion 22 may cover the third adhesive portion 123, so that scratch resistance of the area where the third adhesive portion 123 is located can be ensured. It can be understood that the first bonding part 121 is provided with the first hardened part 21 at a position corresponding to the first bonding part 121, and the first bonding part 121 is used for improving scratch resistance at a position corresponding to the first hardened part 21.
In some embodiments, as shown in fig. 5, the orthographic projection of the third bonding portion 123 on the hardened coating 2 at least partially overlaps with the orthographic projection of the second bonding portion 122 on the hardened coating 2, the accommodating portion 211 penetrates through the hardened coating 2, and the second hardened portion 22 is connected to the second bonding portion 122 through the third bonding portion 123.
In the embodiment of the present application, the first hardened portion 21 can be connected to the body portion 11 or the first adhesion portion 121 and the support layer 1, and the second hardened portion 22 penetrates through the hardened coating 2, so that in order to connect the second hardened portion 22 to the support layer 1 in the thickness direction, the orthographic projection of the third adhesion portion 123 on the hardened coating 2 and the orthographic projection of the second adhesion portion 122 on the hardened coating 2 at least partially overlap, so that the second hardened portion 22 can be connected to the bottom wall 1111 through the third adhesion portion 123 and the second adhesion portion 122, so as to connect to the support layer 1 and avoid the risk of relative displacement between the first hardened portion 21 and the second hardened portion 22 in the thickness direction.
In some embodiments, as shown in fig. 5, the first bonding part 121 includes a second surface a2 facing away from the bottom wall 1111, the third bonding part 123 includes a third surface A3 facing away from the bottom wall 1111, and the second surface a2 is flush with the third surface A3.
The hard coating 2 is formed on the surfaces of the first bonding portion 121 and the third bonding portion 123 away from the bottom wall 1111, and in the embodiment of the present application, the second surface a2 and the third surface A3 are arranged in a flush manner, so that the second surface a2 and the third surface A3 are located in the same plane, thereby facilitating the preparation of the hard coating 2 on the second surface a2 and the third surface A3, and reducing the preparation difficulty.
In some embodiments, the second surface a2 is flush with the first surface a 1.
The first surface a1, the second surface a2 and the third surface A3 are all flush, that is, the surface of the support layer 1 facing the hardened coating 2 is a flat surface, thereby further facilitating the preparation of the hardened coating 2 on the support layer 1, and simultaneously facilitating the formation of the flat hardened coating 2, so that the surface of the whole flexible cover plate is smooth and flat, and the final use hand feeling is improved.
In some embodiments, as shown in fig. 3, the bonding portion 12 is plural, and the bonding portions 12 are spaced along the first direction X.
In the embodiment of the present application, the plurality of bonding portions 12 may be provided in multiple stages, each bonding portion 12 may extend along the second direction Y, and the length of the bonding portion 12 in the second direction Y may be the same as the length of the flexible cover board in the second direction Y. The first direction X and the second direction Y may be any direction parallel to the first surface a1, as long as the two directions intersect with each other, and the embodiment of the present application does not limit this.
In some alternative embodiments, referring to fig. 6, the bonding portions 12 are disposed at intervals along a second direction Y, and the first direction X intersects with the second direction Y.
In the embodiment of the present application, the bonding portions 12 are disposed at intervals along both the first direction X and the second direction Y, that is, the single bonding portion 12 is a block structure, and the bonding portions 12 are distributed in an array. Illustratively, the first direction X is perpendicular to the second direction Y, and 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, please refer to fig. 7, an embodiment of the present application provides a display device, which includes a flexible display panel 3 and a flexible cover plate according to any of the foregoing embodiments, where the flexible cover plate is disposed on a light emitting surface side of the flexible display panel 3.
The display device provided by the embodiment of the present application has the beneficial effects of the flexible cover plate provided by the embodiment of the present application, and specific descriptions on the flexible cover plate in the above embodiments may be specifically referred to, and this embodiment is not described herein again.
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 first surface positioned on one side of the thickness direction of the first material layer and a containing groove formed by the first surface in a concave mode.
Referring to fig. 9a, in step S100, a first material layer is used to form the body portion 11 of the supporting layer, the first material layer includes a plurality of receiving grooves 111, and the plurality of receiving grooves 111 are used to carry a bonding portion formed subsequently. It should be noted that, in step S100, the first material layer needs to be processed and shaped to fix the shape of the accommodating groove 111, wherein the embodiment of the present application is not limited to the preparation process of the first material layer. Alternatively, the first material layer may be formed by a curing process, and the receiving groove 111 may be formed by CNC machining.
In some alternative embodiments, the process of preparing the first material layer includes: firstly, a special-shaped base station is provided, and the special-shaped base station comprises a square base and a plurality of convex structures arranged on the upper surface of the square base. And then coating a first material on the surface of the special-shaped base station provided with the protruding structure, and shaping the first material to form a first material layer, wherein the corresponding position of the protruding structure is the position of the accommodating groove of the first material layer, and the size and the shape of the protruding structure determine the size and the shape of the accommodating groove.
S110: and filling the accommodating groove with a bonding material, and shaping the bonding material to form a bonding part, wherein the hardness parameter of part of the bonding part is greater than that of the first material layer.
Referring to fig. 9b, in step S110, an adhesive material is used to form the adhesive portion 12, and the adhesive portion 12 is used to connect the bottom wall 1111 of the accommodating groove 111 with a hardened coating layer formed later. Meanwhile, because the hardness parameter of part of the bonding part is greater than that of the first material layer, the formation of the bonding part 12 can also improve the hardness of part of the flexible cover plate and improve the anti-scratching capability of the flexible cover plate. The adhesive material may include a plurality of different materials, which is not limited in the embodiments of the present application.
S120: and forming a hardened coating on the first surface, wherein the hardened coating is connected with the bottom wall of the accommodating groove through the bonding part.
Referring to fig. 9c, in step S120, a hardened coating 2 is formed on the first surface a1, and the formation of the hardened coating 2 can improve the strength of the flexible cover. Illustratively, the thickness of the hardened coating 2 is 3 μm, which can increase the strength of the flexible cover as much as possible while satisfying the need for the flexible cover to be rolled or folded.
In some embodiments, referring to fig. 10 and 11, in step S110, the method includes:
s111: and filling a second bonding material in the accommodating groove, and shaping the second bonding material to form a second bonding part.
Referring to fig. 11a, in step S111, a second adhesive portion 122 is formed in the accommodating groove 111, and the second adhesive portion 122 is used for connecting the bottom wall 1111 of the accommodating groove 111 and a first adhesive portion formed later. The hardness parameter of the second bonding portion is small, so that the formed second bonding portion 122 can play a role in buffering friction between the first bonding portion and the bottom wall 1111 of the accommodating groove 111, and the risk of deformation of the accommodating groove 111 is reduced. Optionally, the hardness parameter of the second bonding portion is smaller than the hardness parameter of the first material layer.
S112: and filling a first bonding material on the second bonding part, and forming the first bonding material into a shape to form a first bonding part, wherein the hardness parameter of the first bonding part is greater than that of the second bonding material.
Referring to fig. 11b, in step S112, a first adhesive material is used to form the first adhesive portion 121, and the hardness of the first adhesive portion is greater than the hardness of the second adhesive portion and greater than the hardness parameter of the first material layer. Therefore, the first bonding portion 121 can improve the scratch resistance of the flexible cover plate, and improve the strength of the flexible cover plate.
In some embodiments, as shown in fig. 11b, in step S112, the method includes: a gap exists between the shaped first bonding portion 121 and the sidewall 1112 of the accommodating groove 111, and the size of the gap may be determined according to an actual manufacturing situation, which is not limited in the embodiment of the present application.
As shown in fig. 10 and 11, in step S110, the method further includes:
s113: and filling a third bonding material in a gap between the first bonding part and the side wall of the accommodating groove, and shaping the third bonding material to form a third bonding part, wherein the hardness parameter of the first bonding part is greater than that of the third bonding part.
Referring to fig. 11c, in step S113, similar to the effect of the second adhesive material, the third adhesive portion 123 formed by the third adhesive material is used for buffering the interaction force between the first adhesive portion 121 and the sidewall 1112, so as to reduce the risk of deformation of the accommodating groove 111. It is understood that the third adhesive material may be the same material as the second adhesive material. Optionally, the third bonding portion 123 formed by the third bonding material is a ring-shaped structure and is disposed around the first bonding portion 121.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the corresponding processes in the foregoing method embodiments may be referred to for replacement of the other connection manners described above, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
Claims (10)
1. The flexible cover plate is characterized by comprising a supporting layer and a hardening coating which are arranged in a stacked mode, wherein the supporting layer comprises a body part and a bonding part, the body part comprises a first surface facing the hardening coating, and a containing groove formed by the first surface in a concave mode along the thickness direction of the flexible cover plate, the bonding part is embedded in the containing groove, the bottom wall of the containing groove is connected with the hardening coating through the bonding part, and the hardness parameter of part of the bonding part is larger than that of the body part.
2. The flexible cover according to claim 1, wherein the bonding portion comprises a first bonding portion and a second bonding portion stacked in a thickness direction of the flexible cover, and the first bonding portion is connected to the bottom wall through the second bonding portion;
the hardness parameter of the first bonding part is greater than that of the body part and greater than that of the second bonding part;
preferably, the hardness parameter of the second bonding portion is smaller than the hardness parameter of the body portion.
3. The flexible cover sheet of claim 2, wherein a gap is provided between the first bonding portion and the sidewall of the receiving groove, the bonding portion further comprises a third bonding portion disposed in the gap, the first bonding portion is connected to the sidewall through the third bonding portion, and a hardness parameter of the first bonding portion is greater than a hardness parameter of the third bonding portion;
preferably, the hardness parameter of the third bonding part is smaller than that of the body part;
preferably, the third bonding portion is disposed around an outer peripheral side of the first bonding portion.
4. The flexible cover sheet of claim 3, wherein the hardened coating comprises a first hardened portion and a second hardened portion, the first hardened portion comprises a plurality of receiving portions spaced apart from each other, the second hardened portion is embedded in each receiving portion to form a film structure covering the supporting layer, and a hardness parameter of the second hardened portion is greater than a hardness parameter of the first hardened portion;
preferably, the third bonding portion at least partially overlaps the second hardened portion in an orthographic projection of the hardened coating;
preferably, the orthographic projection of the third bonding part on the hardened coating is positioned in the outer contour of the second hardening part.
5. The flexible cover sheet of claim 4, wherein the orthographic projection of the third bonding portion on the hardened coating at least partially overlaps the orthographic projection of the second bonding portion on the hardened coating, the receiving portion extending through the hardened coating, the second bonding portion connected to the second bonding portion by the third bonding portion, and at least a portion of the first bonding portion connected to the second bonding portion by the first bonding portion.
Preferably, the first bonding portion comprises a second surface facing away from the bottom wall, the third bonding portion comprises a third surface facing away from the bottom wall, and the second surface is flush with the third surface;
preferably, the second surface is flush with the first surface.
6. The flexible cover sheet of claim 1, wherein the bonding portion is a plurality of bonding portions, and the plurality of bonding portions are arranged at intervals along a first direction;
preferably, the bonding portions are spaced apart from each other in a second direction, and the first direction intersects with the second direction.
7. A display device, comprising a flexible display panel and the flexible cover plate according to any one of claims 1 to 6, wherein the flexible cover plate is disposed on a light emitting surface side of the flexible display panel.
8. A method for preparing a flexible cover plate is characterized by comprising the following steps:
providing a first material layer, wherein the first material layer comprises a first surface positioned on one side of the thickness direction of the first material layer and a containing groove formed by the first surface in a concave mode;
filling a bonding material in the accommodating groove, and shaping the bonding material to form a bonding part, wherein the hardness parameter of part of the bonding part is greater than that of the first material layer;
and forming a hardened coating on the first surface, wherein the hardened coating is connected with the bottom wall of the accommodating groove through the bonding part.
9. The method for preparing according to claim 8, wherein the filling of the adhesive material in the receiving groove and the setting of the adhesive material to form the adhesive portion comprises:
filling a second bonding material in the accommodating groove, and shaping the second bonding material to form a second bonding part;
and filling a first bonding material on the second bonding part, and forming the first bonding material into a shape to form a first bonding part, wherein the hardness parameter of the first bonding part is greater than that of the second bonding part.
10. The method for preparing according to claim 9, wherein the filling of the first adhesive material on the second adhesive material and the setting of the first adhesive material to form the first adhesive portion comprises: a gap is formed between the first bonding part formed by shaping and the side wall of the accommodating groove;
filling bonding material in the holding tank to with bonding material stereotypes and forms bonding portion, still include:
and filling a third bonding material in a gap between the first bonding part and the side wall of the accommodating groove, and shaping the third bonding material to form a third bonding part, wherein the hardness parameter of the first bonding part is greater than that of the third bonding part.
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| CN114582239B (en) | 2023-12-19 |
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