CN110223604A - A kind of flexible cover plate of display panel and preparation method thereof, display device - Google Patents
A kind of flexible cover plate of display panel and preparation method thereof, display device Download PDFInfo
- Publication number
- CN110223604A CN110223604A CN201910444275.7A CN201910444275A CN110223604A CN 110223604 A CN110223604 A CN 110223604A CN 201910444275 A CN201910444275 A CN 201910444275A CN 110223604 A CN110223604 A CN 110223604A
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- CN
- China
- Prior art keywords
- cover plate
- protective layer
- flexible cover
- display panel
- preparation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The invention discloses flexible cover plate of a kind of display panel and preparation method thereof, display device, flexible cover plate includes substrate；Protective layer is set on the substrate；It wherein, include several ribbons in the protective layer, several ribbons are parallel to each other arrangement straggly.The beneficial effects of the present invention are the tensile strengths that flexible cover plate of display panel of the invention and preparation method thereof, display device improve flexible cover plate by setting protective layer on flexible substrates; promote the rigidity of flexible cover plate; its scratch performance can be improved; the material of protective layer uses zirconium oxide; the materials such as boron nitride, chemical property are stablized, high-intensitive; high rigidity, coefficient of friction are small.Several ribbons parallel with flexible base board length direction are set in protective layer, and ribbon uses polyurethane fiber, can effectively promote the scraping and wiping resistance performance of material; it can prevent horizontal sliding; it is set there are enough resiliences, preparation method of the invention uses spin coating proceeding, simple to operation.
Description
Technical field
The present invention relates to display field, in particular to a kind of flexible cover plate of display panel and preparation method thereof, display
Device.
Background technique
Currently, folding flexibility Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) is again
Referred to as Organic Electricity laser display, organic luminous semiconductor display device are launched successively, cause that industry and consumer's is wide
General concern.To take into account bent and durability, folding flexible organic light emitting diode display part outermost layer mostly uses soft
Property Cover window (covering window) or Cover glass (cover glass) be used as outermost layer protective layer.These materials exist
On the basis of taking into account bent performance, while needing to have good optical property (transmitance is high, and Huang value and mist degree are small), and
With high hardness, scratch-resistant and impact resistance.
With the progress of display technology, the screen of smart terminal product (such as mobile phone, tablet computer) also experiencings huge
Variation.Take the mobile phone as an example: the development of mobile phone screen is descending, by directly bent, then to screen, foldable screen comprehensively, foldable
Screen is the important technology direction of the following smart terminal product development.
The realization of the folding functional of smart terminal product needs display screen to have the ability bent repeatedly, and bends not shadow
Display function is rung, the display screen for having the function is properly termed as flexible display screen.However existing composition smart terminal product
The material surface hardness of flexible die group (flexible die group includes above-mentioned flexible display screen, and flexible display screen is alternatively referred to as display layer)
It is low, intensity is weak, in order to improve the service life of flexible die group, user should be avoided and directly operated in the flexible die group, need
There are the protection of cover board, therefore the ability that cover board also there must be enough rigidity and can bend repeatedly.
With the development of display technology, nowadays display device application field is very extensive, therefore for shielding body items
It can require also to gradually rise.Flexible screen body has the characteristics that bent, and using the flexibility of display device, people can will display dress
It sets and is bent or folded, offer convenience to carry and use display device to people.The wearable of flexible display panels is shown
Showing device is also increasingly valued by people, and is shown important application potential in fields such as amusements, is also included in the industry
Main competitive market.
Common flexible cover plate material is as shown in Figure 1, mostly by flexible substrates, (CPI, (transparent polyimides), PET are (poly-
Ethylene glycol terephthalate) etc.) coating hard coating (Surface hardening treatment) material constitute, by adjusting substrate with
Hard coating (Surface hardening treatment) layer material thickness, modulus or cure process etc., to take into account the flexibility and rigidity of material.
Display device long-time use process does not require nothing more than good bending performance, at the same must receive external force it is long when abrasion and scrape,
This also challenges to flexible cover plate material.However, flexible parent metal is thicker, cost is higher, and crooked process radius is bigger, to bending performance
Challenge it is bigger；Cementation zone and Anti-scratching coating are chosen while increasing crooked process radius, and to interlayer adhesion force proposition
War.
Summary of the invention
The technical solution to solve the above problems is: the present invention provides a kind of flexible cover plates of display panel, including base
Plate；Protective layer is set on the substrate；It wherein, include several ribbons in the protective layer, several ribbons are parallel to each other mistake
Fall arrangement.
Further, the material of the substrate include transparent polyimides, in polyethylene terephthalate extremely
Few one kind.
Further, the material of the protective layer is zirconium oxide or boron nitride.
Further, the material of the ribbon is polyurethane fiber.
The present invention also provides a kind of preparation methods of the flexible cover plate of display panel, comprising:
S1) one substrate is provided；
S2) spin coating protective layer solution on the substrate；
S3) pass through anti-solvent method spin coating ribbon solution on the protective layer solution；
S4) after the protective layer solution and the ribbon solution are dry, the phase in protective layer and protective layer is formed
The mutually ribbon of parallel arrangement straggly.
Further, the protective layer solution is zirconium oxide or nitridation B solution.
Further, in the step S2) in, pass through anti-solvent method spin coating protective layer solution on the substrate.
Further, the mass fraction of the middle zirconium oxide of the protective layer solution or boron nitride is 2%~5%.
Further, the ribbon solution is the polyurethane solutions for being dissolved in dimethyl sulfoxide.
The present invention also provides a kind of display panel, the flexible cover plate including the display panel.
The invention has the advantages that flexible cover plate of display panel of the invention and preparation method thereof, display device pass through
Protective layer is set to improve the tensile strength of flexible cover plate on flexible substrates, that is, promotes the rigidity of flexible cover plate, can improve
Its scratch performance, the material of protective layer use zirconium oxide, the materials such as boron nitride, and chemical property is stablized, high-intensitive, high rigidity,
Coefficient of friction is small.Several ribbons parallel with flexible base board length direction are set in protective layer, and ribbon uses polyurethane
Fiber is the polymer material of high-modulus, can effectively promote the scraping and wiping resistance performance of material, while polyurethane fiber is total for block
Polymers is alternately made of soft segment and rigid chain segment.Flexibility chain is easy deformation under stress, and can be stretched deformation；
Rigid chain segment does not generate deformation under stress, can prevent horizontal sliding, it is made to have enough resiliences, preparation of the invention
Method uses spin coating proceeding, simple to operation.
Detailed description of the invention
The present invention is further explained with reference to the accompanying drawings and examples.
Fig. 1 is the flexible cover plate schematic diagram in background technique.
Fig. 2 is the flexible cover plate schematic diagram in embodiment.
Fig. 3 is the display panel schematic diagram in embodiment.
In figure
1 display panel；
10 flexible cover plates；110 substrates；
120 protective layers；121 ribbons；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those skilled in the art's every other implementation obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first " in above-mentioned attached drawing, " second ", " third " etc.
(if present) is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be appreciated that this
The object of sample description is interchangeable under appropriate circumstances.In addition, term " includes " and " having " and their any deformation, meaning
Figure, which is to cover, non-exclusive includes.
Embodiment 1
As shown in Fig. 2, flexible cover plate 10 of the invention includes substrate 110 and protective layer 120 in the present embodiment.
The flexible cover plate 10 is transparent display cover board, the surface of 1 touch screen of display panel is mainly located in, for protecting
The display panel 1, prevents display panel 1 in use, due to scraping or bending to cause the use of display panel 1
Service life reduces.
The substrate 110 be flexible base board, material can for CPI (inorganic transparent polyimides), PE (polyethylene) and
One of PMMA (polymethyl methacrylate) or a variety of.
There is CPI (inorganic transparent polyimides) high transmissivity (up to 99%) and high-wear resistance (to pass through 25 times
After circulation friction, 0.1%) transmitance of film only declines, high degree protects the display panel 1, improves the display
The service life of panel 1.
The substrate with a thickness of 20~200 microns so that guarantee flexible display screen cover board have both bendable folding endurance, anti-impact
While hitting property and stiffness, the integral thickness of flexible display screen cover board is unlikely to too thin, if too thin, flexible display screen cover board
It is easy demoulding.
The protective layer 120 is set on the substrate 110, and the protective layer 120 uses zirconium oxide or boron nitride material, oxygen
Change zirconium have high-melting-point, high resistivity, high refractive index and low thermal coefficient of expansion property, be good high temperature resistant and wear-resisting material
Material, boron nitride is zincblende lattce structure, has good thermal conductivity.Hardness is only second to diamond, is a kind of superhard material, can be with
The substrate 10 is effectively protected, prevents it from wearing in bending or scraping.
Due to the flexible cover plate 10 use flexible material, in use, the reliability of the flexible cover plate 10 and
Durability, which becomes, measures the key factor that can product be quickly obtained market, and the display panel 1 using the flexible cover plate 10 exists
In bending process, the flexible cover plate 10 is used as outermost protective device, and the performance coupled hardness with softness is by most directly choosing
War, the flexible cover plate 10 will receive the double action of stretching and compression in the process of bending, meanwhile, it can be adjoint in bending process
The phase mutual friction between 10 material of flexible cover plate.
It include several ribbons 121 in the protective layer 120 of the invention in the present embodiment, the ribbon 121 is mutually
Parallel arrangement straggly, arragement direction are consistent with the length direction of the substrate 10.Using in the protective layer 120, institute is set
Stating ribbon 121 can be improved the tensile strength of the protective layer 120, promote the rigidity of the flexible cover plate 10, improve bending
Performance.
The ribbon 121 uses polyurethane fiber, and polyurethane fiber is block copolymer, by soft segment and rigid chain
Section alternately forms.Flexibility chain is easy deformation under stress, and can be stretched deformation；Rigid chain segment does not produce under stress
Raw deformation, can prevent horizontal sliding, it is made to have enough resiliences.It is the polymer material of high-modulus simultaneously, can received
External force is quickly eliminated after generating scratch to external force, eliminates scratch in a short time, using the polymer material of high-modulus,
The scratch-resistant ability and bend resistance ability of the flexible cover plate 10 can effectively be promoted.
In order to preferably illustrate the present invention, the present embodiment provides a kind of preparation side for preparing the flexible cover plate 10
Method, step include S1)~S4).
S1) one substrate 110 is provided；
S2) 120 solution of spin coating protective layer on the substrate 110, can also be by anti-solvent method on the substrate 110
120 solution of spin coating protective layer, 120 solution of protective layer are zirconium oxide or nitridation B solution, wherein the protective layer 120 is molten
The mass fraction of zirconium oxide or boron nitride is 2%~5% in liquid；
S3) molten by anti-solvent method 121 solution of spin coating ribbon, ribbon 121 on 120 solution of protective layer
Liquid is the polyurethane solutions for being dissolved in dimethyl sulfoxide, and by adjusting the concentration of polyurethane, mixed solvent, spin coating atmosphere, revolving speed adds
Enter the time of anti-solvent to regulate and control the dispersion amount of the i.e. described ribbon 121 of polyurethane fiber；
S4) after 120 solution of protective layer and 121 solution of the ribbon are dry, protective layer 120 and protection are formed
The ribbon 121 of the arrangement straggly that is parallel to each other in layer 120.
As shown in figure 3, the present invention also provides a kind of display panel 1, main improvement and feature are embodied a concentrated reflection of
On the flexible cover plate 10, for the other component of display panel 1, just no longer repeat one by one.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of flexible cover plate of display panel, which is characterized in that including
Substrate；
Protective layer is set on the substrate；It wherein, include several ribbons in the protective layer, several ribbons are parallel to each other
Arrangement straggly.
2. the flexible cover plate of display panel according to claim 1, which is characterized in that
The material of the substrate includes at least one of transparent polyimides, polyethylene terephthalate.
3. the flexible cover plate of display panel according to claim 1, which is characterized in that
The material of the protective layer is zirconium oxide or boron nitride.
4. the flexible cover plate of display panel according to claim 1, which is characterized in that
The material of the ribbon is polyurethane fiber.
5. a kind of preparation method of the flexible cover plate of display panel, which is characterized in that including
S1) one substrate is provided；
S2) spin coating protective layer solution on the substrate；
S3) pass through anti-solvent method spin coating ribbon solution on the protective layer solution；
S4 mutual flat in formation protective layer and protective layer) after the protective layer solution and the ribbon solution are dry
The ribbon of row arrangement straggly.
6. the preparation method of the flexible cover plate of display panel according to claim 5, which is characterized in that the protective layer
Solution is zirconium oxide or nitridation B solution.
7. the preparation method of the flexible cover plate of display panel according to claim 5, which is characterized in that in the step
S2 in), pass through anti-solvent method spin coating protective layer solution on the substrate.
8. the preparation method of the flexible cover plate of display panel according to claim 6, which is characterized in that the protective layer
The middle zirconium oxide of solution or the mass fraction of boron nitride are 2%~5%.
9. the preparation method of the flexible cover plate of display panel according to claim 5, which is characterized in that the ribbon
Solution is the polyurethane solutions for being dissolved in dimethyl sulfoxide.
10. a kind of display panel, which is characterized in that including display panel as described in any one as described in claim 1-4
Flexible cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444275.7A CN110223604A (en) | 2019-05-27 | 2019-05-27 | A kind of flexible cover plate of display panel and preparation method thereof, display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444275.7A CN110223604A (en) | 2019-05-27 | 2019-05-27 | A kind of flexible cover plate of display panel and preparation method thereof, display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110223604A true CN110223604A (en) | 2019-09-10 |
Family
ID=67817980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910444275.7A Pending CN110223604A (en) | 2019-05-27 | 2019-05-27 | A kind of flexible cover plate of display panel and preparation method thereof, display device |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853514A (en) * | 2019-11-18 | 2020-02-28 | 京东方科技集团股份有限公司 | Flexible cover plate, display module and display device |
| CN111826011A (en) * | 2019-11-06 | 2020-10-27 | 深圳科诺桥科技股份有限公司 | Modified coating for surface of transparent covering film, preparation method thereof and modified coating |
| CN112908160A (en) * | 2021-01-19 | 2021-06-04 | 京东方科技集团股份有限公司 | Display cover plate, preparation method thereof and display panel |
| WO2021169575A1 (en) * | 2020-02-27 | 2021-09-02 | 京东方科技集团股份有限公司 | Flexible display device and method for preparing flexible display device |
| CN114787706A (en) * | 2020-01-02 | 2022-07-22 | 法国圣戈班玻璃厂 | Optical system, insulating glass including such optical system, method for manufacturing the insulating glass, and method for protecting optical system |
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| PB01 | Publication | ||
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Application publication date: 20190910 |