CN112820200A - Cover plate and display device - Google Patents

Cover plate and display device Download PDF

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Publication number
CN112820200A
CN112820200A CN202110198129.8A CN202110198129A CN112820200A CN 112820200 A CN112820200 A CN 112820200A CN 202110198129 A CN202110198129 A CN 202110198129A CN 112820200 A CN112820200 A CN 112820200A
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China
Prior art keywords
flexible layer
layer
cover plate
connection portion
transparent layer
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CN202110198129.8A
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Chinese (zh)
Inventor
谢思
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to CN202110198129.8A priority Critical patent/CN112820200A/en
Publication of CN112820200A publication Critical patent/CN112820200A/en
Pending legal-status Critical Current

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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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application discloses apron and display device, the apron includes: a flexible layer and a transparent layer, at least a portion of the transparent layer being disposed on both sides of the flexible layer, and the transparent layer having a rigidity greater than a rigidity of the flexible layer. The application provides a apron and display device are used for improving the problem that the apron produces the ripple when folding.

Description

Cover plate and display device
Technical Field
The application relates to the technical field of display, in particular to a cover plate and a display device.
Background
With the development of the trend of foldable display devices, consumers pay more and more attention to the foldable display devices. The display device comprises a display panel and a cover plate positioned above the display panel, and the existing cover plate is easy to generate Waviness (wavine) in a folding area in the process of folding along with the display device, so that the requirement of flexible display cannot be met.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The embodiment of the application provides a cover plate and a display device, and is used for improving the problem that the cover plate generates ripples when being folded.
An embodiment of the present application provides a cover plate, including:
a flexible layer;
a transparent layer, at least a portion of the transparent layer being disposed on both sides of the flexible layer, and the transparent layer having a rigidity greater than a rigidity of the flexible layer.
In the cover plate provided in the embodiment of the present application, the transparent layer has a first portion, a second portion, and a third portion, the first portion and the second portion are located on both sides of the third portion, the first portion, the second portion, and the third portion form a groove, and the flexible layer is disposed in the groove.
In the cover plate provided by the embodiment of the application, the thickness of the flexible layer is the same as the depth of the groove.
In the apron that this application embodiment provided, the bottom surface of recess is an arcwall face, just the arcwall face is along keeping away from the open-ended direction of recess is buckled.
In the cover plate provided by the embodiment of the application, the difference between the refractive index of the cover plate in the region corresponding to the first part and the second part and the refractive index of the cover plate in the region corresponding to the flexible layer and the third part is between-0.1 and 0.1.
In the cover plate provided by the embodiment of the application, the flexible layer is provided with a first connecting part, a second connecting part and a third connecting part, the first connecting part and the second connecting part are located on two sides of the third connecting part, the first connecting part and the second connecting part are provided with installation cavities, and the transparent layer is arranged in the installation cavities of the first connecting part and the second connecting part.
In the cover plate provided by the embodiment of the application, the first connecting part, the second connecting part and the third connecting part are of an integrally formed structure.
In the cover plate provided by the embodiment of the application, the rigidity of the flexible layer is gradually increased in the horizontal direction in which the middle part of the flexible layer points to any side of the flexible layer.
In the cover plate provided in the embodiment of the present application, a material of the flexible layer is at least one of a resin or an optical adhesive, and a material of the transparent layer is glass.
The embodiment of the application also provides a display device, which comprises a display panel and the cover plate, wherein the cover plate is arranged on the display panel.
The embodiment of the application provides a cover plate and a display device, the cover plate provided by the embodiment of the application comprises a flexible layer and a transparent layer, wherein at least one part of the transparent layer is positioned on two sides of the flexible layer, the rigidity of the transparent layer is greater than that of the flexible layer, and the problem of corrugation generated when the cover plate is bent is solved due to the fact that the flexible layer has greater flexibility.
In order to make the aforementioned and other objects of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a cover plate of a display device according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of the bent cover plate of FIG. 2;
fig. 4 is another schematic structural diagram of a cover plate of a display device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural view of the cover plate of fig. 4 after being bent.
Detailed Description
For purposes of clarity, technical solutions and advantages of the present application, the present application will be described in further detail with reference to the accompanying drawings, wherein like reference numerals represent like elements throughout the several views, and the following description is based on the illustrated embodiments of the present application and should not be construed as limiting the other embodiments of the present application which are not detailed herein. The word "embodiment" as used herein means an example, instance, or illustration.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being directly adjacent or may comprise the first and second features being not in direct contact but in contact with each other by means of further features between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure. The display device 100 includes a display panel 30 and a cover plate 10 disposed on the display panel 30.
In an embodiment, the display device 100 may further include an Adhesive layer 20 disposed between the display panel 30 and the cover plate 10, the Adhesive layer 20 is used for adhering the display panel 30 and the cover plate 10, and a material of the Adhesive layer 20 includes an optical Clear Adhesive (optical Adhesive) material. The optical adhesive material may be one of an ultraviolet curing adhesive or a thermosetting curing adhesive. The optical adhesive material can be used for cementing transparent optical elements and comprises at least one of organic silica gel, acrylic resin, unsaturated polyester, polyurethane, epoxy resin and other adhesives. In the embodiment of the present application, the light transmittance of the adhesive layer 20 is greater than 90%
The display device 100, which is a foldable display device, includes a display panel 30, a cover plate 10, a touch panel (which may be referred to as a touch screen panel, not labeled in the drawings) between the display panel 30 and the cover plate 10, and an adhesive layer 20 between the touch panel and the cover plate 10. The touch panel is disposed on the display panel 30. That is, the touch screen panel may be an add-on type (add-on type) touch panel. Alternatively, a touch panel may be provided in the display panel 30, so that an in-cell type touch display device such as an add-on type (on-cell) or an integrated type (in-cell) may be provided.
It should be noted that the display panel in this embodiment may be an Active Light Emitting display panel, such as an Organic Light-Emitting Diode (OLED) display panel, an Active-Matrix Organic Light-Emitting Diode (AMOLED) display panel, a Passive-Matrix Organic Light-Emitting Diode (Passive Matrix OLED) display panel, a Quantum Dot Organic Light-Emitting Diode (QLED) display panel, and the like. The display panel of the embodiment of the present application may also be a liquid crystal display panel, and the present application does not limit the type of the display panel, and the display panel may be a Vertical electric Field type liquid crystal display panel, such as a Twisted Nematic (TN) type liquid crystal display panel, a Multi-domain Vertical Alignment (MVA) type liquid crystal display panel, or a horizontal electric Field type liquid crystal display panel, such as a Fringe Field Switching (FFS) type liquid crystal display panel or an In-Plane Switching (IPS) type liquid crystal display panel.
When the display panel 30 is an active light emitting display panel, the display panel 30 includes a substrate (not shown), a driving circuit layer (not shown) disposed on the substrate, and a light emitting functional layer (not shown) and an encapsulation layer (not shown) electrically connected to the driving circuit layer. The light emitting function layer may include an anode, a light emitting layer, a cathode, and a hole injection layer, a hole transport layer, an electron injection layer, and the like. The encapsulation layer comprises at least one inorganic layer and at least one organic layer which are alternately stacked. The inorganic layer may be selected from inorganic materials of alumina, silicon oxide, silicon nitride, silicon oxynitride, silicon carbide, titanium oxide, zirconium oxide, zinc oxide, and the like. The organic layer is an organic material selected from epoxy resin, Polyimide (PI), polyethylene terephthalate (PET), Polycarbonate (PC), Polyethylene (PE), polyacrylate, and the like. For example, the encapsulation layer has a laminated structure of an alumina film, a polypropylene film, and a silicon nitride film, which are laminated in this order.
When the display panel 30 is a liquid crystal display panel, the liquid crystal display panel includes an array substrate and an opposite substrate which are oppositely disposed and a liquid crystal layer disposed between the array substrate and the opposite substrate. In this embodiment, the substrate is an array substrate, and the opposite substrate is a color filter substrate. The application also does not limit the types of the array substrate and the opposite substrate. In other embodiments of the present disclosure, the array substrate and the opposite substrate may be coa (color Filter On array) type array substrate and opposite substrate.
The display device can be an electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, a game machine, a digital camera, a vehicle-mounted navigator, an electronic billboard, an automatic teller machine and the like.
Next, a detailed description will be given of the cover plate 10 provided in the embodiment of the present application.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a cover plate of a display device according to an embodiment of the present disclosure. The cover plate 10 includes a first region 10a and second regions 10b disposed at both sides of the first region 10 a.
The cover sheet 10 includes a flexible layer 101 and a transparent layer 102. Wherein at least a part of the transparent layer 102 is disposed on both sides of the flexible layer 101, and the rigidity of the transparent layer 102 is greater than that of the flexible layer 101.
Specifically, the transparent layer 102 has a first portion 1021, a second portion 1022, and a third portion 1023, and the first portion 1021 and the second portion 1022 are located at both sides of the third portion 1023. The first portion 1021, the second portion 1022, and the third portion 1023 form a recess 102 a. The flexible layer 101 is disposed within the recess 102 a. Wherein the thickness of the flexible layer 101 is the same as the depth of the groove 102 a.
In one embodiment, the thickness of the cover plate 10 is between 40 microns and 80 microns. For example, the cover plate 10 has a thickness of any one of 40 micrometers, 50 micrometers, 55 micrometers, 60 micrometers, 70 micrometers, or 80 micrometers. The thickness of the cover plate 10 of the embodiment is between 40 micrometers and 80 micrometers, which meets the requirements of the flexible layer 101 and the third portion 1023 on certain hardness and flexibility, and in addition, not only can the problem of waviness generated when the flexible layer 101 and the third portion 1023 are bent for multiple times be solved, but also the requirement of the display device on the hardness of the cover plate can be met.
In one embodiment, the depth of the groove 102a ranges from 20 microns to 40 microns. For example, the depth of the groove 102a is any one of 20 microns, 23 microns, 28 microns, 30 microns, 34 microns, 88 microns, or 40 microns. In the embodiment, the depth of the groove 102a is set to be 20 micrometers to 40 micrometers, so the filling thickness of the flexible layer 101 is also 20 micrometers to 40 micrometers, which meets certain hardness requirement and flexibility requirement of the flexible layer 101 and the third portion 1023, and in addition, not only can the problem of waviness generated when the flexible layer 101 and the third portion 1023 are bent for many times be solved, but also the requirement of the display device on the hardness of the cover plate can be met. The third portion 1023 and the flexible layer 101 are disposed in the first area 10a, and the first portion 1021 and the second portion 1022 are disposed in the second area 10 b. The first region 10a corresponds to a fold region and the second region 10b corresponds to a non-fold region.
In some embodiments, first portion 1021, second portion 1022, and third portion 1023 are an integrally formed structure.
In the cover plate 10, during the folding process, since the rigidity of the flexible layer 101 is less than that of the transparent layer 102, the problem of corrugation generated after the flexible layer 101 and the third portion 1023 are bent for multiple times is solved. In addition, the third portion 1023 has greater rigidity, and can also meet certain hardness requirements. That is to say, the first portion 1021 and the second portion 1022 of the cover plate 10 according to the embodiment of the present disclosure can provide a greater hardness for the display device, and the flexible layer 101 and the third portion 1023 not only improve the problem of ripples generated after the flexible layer 101 and the third portion 1023 are bent for multiple times, but also provide a certain hardness for the display device.
In some embodiments, the bottom surface of the groove 102a is an arc-shaped surface, and the arc-shaped surface is bent in a direction away from the opening of the groove 102 a.
Referring to fig. 3, fig. 3 is a schematic structural view of the cover plate of fig. 2 after being bent. When the cover plate 10 is bent, the stress applied to the middle portion Q of the first region 10a of the cover plate 10 is greater than the stress applied to the two sides of the first region 10a, and therefore, in some embodiments, the bottom surface of the groove 102a is set to be an arc-shaped surface, and the arc-shaped surface is bent in the direction away from the opening of the groove 102a, and the setting mode can reduce the rigidity of the middle portion of the first region 10a, so that the cover plate 10 is not easy to break in the bending process.
In some embodiments, the bottom surface of the groove 102a may be a plane, in which case the rigidity of the flexible layer 101 gradually increases in a horizontal direction in which the middle portion of the flexible layer 101 points to either side of the flexible layer 101 in the first region 10 a. This arrangement can reduce the rigidity of the middle portion of the first region 10a, making it less likely to break during bending. The middle portion of the flexible layer 101 may be made of Polyurethane (PU), polybutyl acrylate (PBA), polystyrene, polybutadiene, polyethylene, or their copolymers. In the first region 10a, in a horizontal direction in which the middle portion of the flexible layer 101 is directed to any one side of the flexible layer 101, materials such as polymethyl methacrylate (PMMA), Polycarbonate (PC), and a copolymer thereof may be selected in this order.
In one embodiment, the difference between the refractive index of the cover plate 10 in the area corresponding to the first portion 1021 and the second portion 1022 and the refractive index of the cover plate 10 in the area corresponding to the flexible layer 101 and the third portion 1023 is between-0.1 and 0.1. That is, the difference in refractive index between the second region 10b and the first region 10a of the cap plate 10 is between-0.1 and 0.1. For example, the difference between the refractive index of the corresponding region of the first portion 1021 and the second portion 1022 and the refractive index of the corresponding region of the flexible layer 101 and the third portion 1023 is any one of-0.1, -0.05, -0.01, 0, 0.01, 0.05 or 0.1. In this embodiment, the materials of the transparent layer 102 and the flexible layer 101 having similar or identical refractive indices are selected such that light rays are not refracted at the interface region between the first region 10a and the second region 10b, such that there is no refractive index difference between the first region 10a and the second region 10b, thereby providing a good display effect when a human visual face is facing the display device.
In some embodiments, the material of the flexible layer 101 is at least one of resin or optical glue, and the material of the transparent layer 102 is glass. The resin material may be Polyurethane (PU), polybutyl acrylate (PBA), polystyrene, polybutadiene, polyethylene and their copolymers, polymethyl methacrylate (PMMA), Polycarbonate (PC) and their copolymers. The optical adhesive material may be one of an ultraviolet curing adhesive or a thermosetting curing adhesive. The optical adhesive material can be used for cementing transparent optical elements and comprises at least one of organic silica gel, acrylic resin, unsaturated polyester, polyurethane, epoxy resin and other adhesives.
The embodiment of the application provides a manufacturing step of a cover plate as follows:
first, a transparent layer is manufactured by a cutting technique using a CNC (Computer Numerical Control) machine, wherein the transparent layer includes a first portion, a second portion, and a third portion, the first portion and the second portion are located at both sides of the third portion, and the first portion, the second portion, and the third portion form a groove. The material of the transparent layer may be glass. On the one hand, glass can provide sufficient hardness to the display device, and on the other hand, glass has better light transmittance.
And secondly, coating the material of the flexible layer into the groove, and processing the material of the flexible layer by using an ultraviolet irradiation or heating mode to form the flexible layer. Wherein the material of the flexible layer comprises at least one of resin or optical cement.
Referring to fig. 4, fig. 4 is another schematic structural diagram of a cover plate of a display device according to an embodiment of the present disclosure. The cover plate 10 includes a first region 10a and second regions 10b disposed at both sides of the first region 10 a.
The cover sheet 10 includes a flexible layer 101 and a transparent layer 102. Wherein at least a part of the transparent layer 102 is disposed on both sides of the flexible layer 101, and the rigidity of the transparent layer 102 is greater than that of the flexible layer 101.
Specifically, flexible layer 101 has first connection portion 1011, second connection portion 1012, and third connection portion 1013, and first connection portion 1011 and second connection portion 1012 are located on both sides of third connection portion 1013. The first and second connection portions 1011 and 1012 have mounting cavities 103. The transparent layer 102 is disposed in the mounting cavity 103 of the first connection portion 1011 and the second connection portion 1012.
The third connecting portion 1013 of the flexible layer 101 is disposed in the first region 10a, and the first and second connecting portions 1011 and 1012 of the flexible layer 101 and the transparent layer 102 are disposed in the second region 10 b. The first region 10a corresponds to a fold region and the second region 10b corresponds to a non-fold region.
In some embodiments, first connecting portion 1011, second connecting portion 1012 and third connecting portion 1013 are an integrally formed structure.
In one embodiment, the thickness of the cover plate 10 is between 40 microns and 80 microns. For example, the cover plate 10 has a thickness of any one of 40 micrometers, 50 micrometers, 55 micrometers, 60 micrometers, 70 micrometers, or 80 micrometers. The thickness of the cover plate 10 of this embodiment is between 40 micrometers and 80 micrometers, and the third connecting portion 1013 of the flexible layer meets certain hardness requirement and flexibility requirement, so that the problem of waviness generated when the third portion 1013 is bent for multiple times can be solved, and the requirement of the display device on the hardness of the cover plate can be met.
In the folding process of the cover plate 10 provided by the embodiment of the application, the rigidity of the flexible layer 101 is less than that of the transparent layer 102, so that the phenomenon that the flexible layer 101 is corrugated after being bent for multiple times is improved. In addition, because the middle parts of the first connecting part 1011 and the second connecting part 1012 are provided with the mounting cavity 103, and the transparent layer 102 is arranged in the mounting cavity 103, the transparent layer 102, the first connecting part 1011 and the second connecting part 1012 have higher rigidity, and simultaneously can meet certain hardness requirements. That is, the first connection portion 1011, the second connection portion 1012 and the transparent layer 102 of the cover plate 10 according to the embodiment of the present disclosure can provide a relatively high hardness for the display device, and the flexibility of the third connection portion 1013 of the flexible layer 101 not only improves the problem of the waviness of the third connection portion 1013 after being bent for many times, but also provides a certain hardness for the display device.
Referring to fig. 4 and 5, fig. 5 is a schematic view of the cover plate of fig. 4 after being bent. In some embodiments, the stiffness of the flexible layer 101 increases gradually in a horizontal direction with the middle of the flexible layer 101 pointing to either side of the flexible layer 101. This arrangement can reduce the rigidity of the middle portion of the first region 10a, making it less likely to break during bending.
In some embodiments, the material of the flexible layer 101 is at least one of resin or optical glue, and the material of the transparent layer 102 is glass. In some embodiments, the transparent layer 102 comprises glass having flexibility. The middle portion of the third connecting portion 1013 may be made of Polyurethane (PU), polybutyl acrylate (PBA), polystyrene, polybutadiene, polyethylene, or their copolymers. In the first region 10a, in a horizontal direction in which the middle portion of the third connection portion 1013 of the flexible layer 101 is directed to any one side of the third connection portion 1013 of the flexible layer 101, materials such as polymethyl methacrylate (PMMA), Polycarbonate (PC), and a copolymer thereof may be sequentially selected.
In one embodiment, the difference between the refractive index of the cover plate 10 in the regions corresponding to the first connecting portions 1011, the second connecting portions 1012 and the transparent layer 102 and the refractive index of the cover plate 10 in the regions corresponding to the third connecting portions 1013 is between-0.1 and 0.1. That is, the difference in refractive index between the second region 10b and the first region 10a of the cap plate 10 is between-0.1 and 0.1. For example, the difference between the refractive index of the regions corresponding to the first connection parts 1011, the second connection parts 1012, and the transparent layer 102 and the refractive index of the regions corresponding to the third connection parts 1013 is any one of-0.1, -0.05, -0.01, 0, 0.01, 0.05, or 0.1. In this embodiment, the materials of the transparent layer 102 and the flexible layer 101 having similar or identical refractive indices are selected such that light rays are not refracted at the interface region between the first region 10a and the second region 10b, such that there is no refractive index difference between the first region 10a and the second region 10b, thereby providing a good display effect when a human visual face is facing the display device.
The embodiment of the application also provides a manufacturing method of the cover plate, which comprises the following steps:
the material of the flexible layer is injected into a mold having transparent layers on both sides of the mold, respectively, and then a Glass Cell Casting Process is performed to form a cover plate.
For example, butyl acrylate and polymethyl methacrylate are injected into a mold having a transparent layer at different contents, and then the mold is transferred into an oven to generate a polymerization reaction. After the polymerization reaction is completed, the mold is demolded, thereby forming a cover plate.
The embodiment of the application provides a cover plate and a display device, the cover plate provided by the embodiment of the application comprises a flexible layer and a transparent layer, wherein at least one part of the transparent layer is positioned on two sides of the flexible layer, the rigidity of the transparent layer is greater than that of the flexible layer, and the problem of corrugation generated when the cover plate is bent is solved due to the fact that the flexible layer has greater flexibility.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.

Claims (10)

1. A cover plate, comprising:
a flexible layer;
a transparent layer, at least a portion of the transparent layer being disposed on both sides of the flexible layer, and the transparent layer having a rigidity greater than a rigidity of the flexible layer.
2. The cover sheet of claim 1 wherein the transparent layer has a first portion, a second portion and a third portion, the first portion and the second portion being located on either side of the third portion, the first portion, the second portion and the third portion forming a recess, the flexible layer being disposed within the recess.
3. The decking of claim 2, wherein the flexible layer has a thickness that is the same as the depth of the grooves.
4. The decking of claim 2, wherein the bottom surface of the recess is an arcuate surface, and the arcuate surface is angled away from the opening of the recess.
5. The cover sheet of claim 2, wherein the difference between the refractive index of the cover sheet in the first and second portion-corresponding regions and the refractive index of the cover sheet in the flexible layer and third portion-corresponding regions is between-0.1 and 0.1.
6. The cover sheet according to claim 1, wherein the flexible layer has a first connection portion, a second connection portion, and a third connection portion, the first connection portion and the second connection portion are located at both sides of the third connection portion, the first connection portion and the second connection portion have mounting cavities, and the transparent layer is disposed in the mounting cavities of the first connection portion and the second connection portion.
7. The decking of claim 6, wherein the first, second and third connecting portions are of unitary construction.
8. The decking of claim 1, wherein the flexible layer has a progressively increasing stiffness in a horizontal direction with a central portion of the flexible layer directed to either side of the flexible layer.
9. The cover sheet according to claim 1, wherein the material of the flexible layer is resin or optical glue, and the material of the transparent layer is glass.
10. A display device comprising a display panel and the cover plate according to any one of claims 1 to 9, wherein the cover plate is provided on the display panel.
CN202110198129.8A 2021-02-22 2021-02-22 Cover plate and display device Pending CN112820200A (en)

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CN113241010A (en) * 2021-05-25 2021-08-10 合肥维信诺科技有限公司 Display panel and display device
CN113643615A (en) * 2021-08-13 2021-11-12 京东方科技集团股份有限公司 Display panel manufacturing method, display panel and display device
CN114360383A (en) * 2022-01-11 2022-04-15 武汉华星光电半导体显示技术有限公司 Cover plate assembly and manufacturing method thereof

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