CN109870748A - A kind of flexible cover plate - Google Patents
A kind of flexible cover plate Download PDFInfo
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- CN109870748A CN109870748A CN201811621309.7A CN201811621309A CN109870748A CN 109870748 A CN109870748 A CN 109870748A CN 201811621309 A CN201811621309 A CN 201811621309A CN 109870748 A CN109870748 A CN 109870748A
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- hardened layer
- cover plate
- flexible cover
- optical surface
- layer
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Abstract
The invention discloses a kind of flexible cover plates, comprising: a non-transparent flexible substrate 4 with the first optical surface and the second optical surface, first optical surface side is equipped with the first hardened layer 3, the second hardened layer 2 of high refractive index is provided with far from an optical surface side of non-transparent flexible substrate 4 in the first hardened layer 3, an optical surface side of the first hardened layer 3 is provided with anti-reflecting layer 1 in second hardened layer 2.It realizes and realizes anti-reflective and the shadow effect that disappears while the transmitance of flexible cover plate reaches glass effects.
Description
Technical field
The present invention relates to optical films, and in particular to flexible cover plate.
Background technique
In recent years, with the development of mobile device such as smart phone and tablet computer, need to be used in the substrate of display
Thinned and loss of weight.Glass or tempered glass are often used as having on the window or foreboard of the display for mobile device excellent
The material of mechanical property.However, glass is rushed since the weight of its own causes the weight of mobile device to increase, and due to external
It hits and there is a problem of breakage.
Therefore, substitute of the plastic resin as glass is being studied.Plastic resin composition is lightweight, but does not almost have
There is the risk of cracking, to be suitable for pursuing the trend of lighter mobile device.Particularly, in order to obtain with high rigidity and wear-resisting
The composition of characteristic, it has been proposed that for coating the composition of hard conating in support substrate.
Method as the surface hardness for improving hard conating, it may be considered that increase the method for the thickness of hard conating.In order to true
The surface hardness being enough instead of glass is protected, needs to realize certain thickness hard conating.However, the thickness with hard conating increases,
Surface hardness can increase, but increase the generation of fold and curling due to the cure shrinkage of hard conating, be easy to happen simultaneously
The cracking of coating and removing.Therefore, the practical application of this method is not easy to.
Meanwhile for the reason of the beautiful and function, wherein a part bending of display device or the flexible display distorted
Recently concern is caused, and this trend is particularly significant in mobile device such as smart phone and tablet computer.However, due to
Glass is not suitable for use in protecting the cover plate of such flexible display, it is therefore desirable to replace glass with plastic resin etc..However,
For this purpose, there is the film of the sufficient flexible high rigidity for showing glass horizontal simultaneously to be not easy to for production.
Summary of the invention
A kind of flexible cover plate 100 comprising:: a non-transparent flexible substrate 4 with the first optical surface and the second optical surface,
First optical surface side is equipped with the first hardened layer 3, in an optical surface of first hardened layer 3 far from non-transparent flexible substrate 4
Side is provided with the second hardened layer 2 of high refractive index, in an optical surface of second hardened layer 2 far from the first hardened layer 3
Side is provided with anti-reflecting layer 1.The setting structure can realize anti-reflective while the transmitance of flexible cover plate reaches glass effects
Effect and the shadow effect that disappears.
Further, the material of first hardened layer 3 and/or second hardened layer 2 is selected from acrylic glue.
Further, the ranges of indices of refraction of first hardened layer 3 is 1.48-1.53；The folding of second hardened layer 2
Penetrating rate range is 1.60-1.80.
Further, the absolute difference range of the refractive index of first hardened layer 3 and non-transparent flexible substrate 4 is 0.05-
Between 0.3, to further increase anti-reflective effect.
Further, the anti-reflecting layer 1 with a thickness of 50-500nm, the ranges of indices of refraction of anti-reflecting layer 1 is 1.20-
1.50, in visible wavelength section, the most sensitive area, that is, wavelength of people's naked eyes is at 400-600nm, and reflectivity reaches minimum, and transmitance is most
It is high.
Further, the thickness range of first hardened layer 3 is 1-15 μm, the thickness range of second hardened layer 2
It is 1-10 μm.
Further, the Component units for being capable of forming gap are contained in the anti-reflecting layer 1.
Further, the Component units are by the structure at least one of particle shape, threadiness, tabular shape
It constitutes.The constitution element of above-mentioned Component units includes selected from by least one of Si, Mg, Al, Ti, Zn and Zr group formed member
Element.The structural body (Component units) for forming particle shape can be solid particle and be also possible to hollow-particle, specifically, be selected from poly- silicon
Oxygen alkane particle or Silicone particles, hollow silica nanoparticle or hollow silica nanometer gas with micropore
Ball, fibrous Component units are selected from the nanofiber that diameter is nano-scale, are specifically selected from cellulose nano-fibrous or oxygen
Change aluminium nanofiber.
Further, the non-transparent flexible substrate 4 is selected from: equal benzene-type PI (polyimides), soluble PI, polyamide-acyl
At least one of imines PAI and polyimide PEI.Purpose selected from above-mentioned clear polyimides is above-mentioned clear polyimides
Can -269 DEG C long-term -280 DEG C indeformable, excellent insulation performances, good flame resistance.
Further, the composition of the acrylic glue includes:
Further, the acrylic monomers is selected from: double pentaerythritol methacrylate, tripropylene glycol acrylic acid
Ester, one of 1,6- glycol diacrylate or a variety of.
Further, it is 5-20%, two contractings that the double pentaerythritol methacrylate, which accounts for acrylic monomers total content ratio,
It is 1-10% that tripropylene glycol acrylate, which accounts for acrylic monomers total content ratio, and 1,6- glycol diacrylate accounts for acrylic acid list
Body total content ratio is 1-10%.
Further, the structure of the non-transparent flexible substrate 4 includes following formula:
G in formula indicates that 4 valence organic groups, A indicate divalent organic group；
Preferably, the organic group is selected from: in non-ring type aliphatic group, ring type aliphatic group and aromatic group
At least one group；
Preferably, the aromatic group is selected from: monocyclic aromatic group, fused polycyclic aromatic group and
With 2 or more aromatic rings and the aromatic ring be connected to each other directly or through linking group made of non-condensed it is polycyclic
At least one of formula aromatic group, the ring type aliphatic group are selected from the ring type fatty group that 5 generation bases are taken with fluorine system
Group, the fused polycyclic aromatic group with fluorine system substituent group, has the monocyclic aromatic group with fluorine system substituent group
At least one of non-condensed polycycle aromatic group of fluorine system substituent group, the 4 valence organic group are selected from following radicals: full
And/or unsaturated ring alkyl, saturation or unsaturated heterocycle alkyl, aryl, heteroaryl, aryl alkyl, alkylaryl, miscellaneous alkyl virtue
Base, with any 2 groups therein and they be connected to each other directly or through linking group made of in group at least
It is a kind of.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to invention into
Row is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit
The fixed present invention.
Unless stated otherwise, solvent, reagent, coating method, technical parameter, the coating apparatus etc. that the present invention uses are this
Technical field Conventional solvents, reagent, method, parameter, equipment etc..
Embodiment 1
By the first hardening bath, (the transparent base layer polyamides that Kang get Xin Nei is coated on 80 μm of thickness for model KDX-DC010) is sub-
On first optical surface of amine 4 (South Korea Cologne), the first hardened layer 3 is formed in the first optical surface, it is separate in the first hardened layer 3
Second hardened layer 2 of the optical surface coating high refractive index of non-transparent flexible substrate 4, in second hardened layer 2 far from first
One optical surface of hardened layer 3 is coated with anti-reflecting layer 1.
The refractive index of above-mentioned first hardened layer be 1.50, first hardened layer 3 with a thickness of 3 μm；
The refractive index of above-mentioned second hardened layer be 1.70, second hardened layer 2 with a thickness of 2 μm；
The refractive index of above-mentioned anti-reflecting layer be 1.35, the anti-reflecting layer 1 with a thickness of 100nm.
Component of the Kang get Xin Nei for model KDX-DC010 are as follows: urethane acrylate content 20%, dipentaerythritol
Six acrylate contents 4%, tripropylene glycol acrylate content 4%, 1,6- glycol diacrylate content 4%；Draw
Send out the mixture content 1% of agent 184 and TPO (819)；The content 1% of levelling agent (BYK-3535).
Second hardened layer is selected from Toyo Ink model FS001.
The refractive index of the transparent base layer polyimides 4 is 1.65.
Embodiment 2
Different from embodiment 1, the refractive index 1.50 of anti-reflecting layer.
Embodiment 3
Different from embodiment 1, the refractive index 1.60 of first hardened layer 3.
Embodiment 4
Different from embodiment 1, the refractive index 1.50 of the anti-reflecting layer 1.
Comparative example 1
Different from embodiment 1, anti-reflecting layer is not contained.
Comparative example 2
Different from embodiment 1, the refractive index 1.52 of the anti-reflecting layer 1.
Comparative example 3
Different from embodiment 1, the refractive index 1.62 of first hardened layer 3.
The experimental result of embodiment 1-4 and comparative example 1-3 see the table below:
| Reflectivity | T.T. | Haze | Reflection differences | A hardness | Outer bend test | Inner bending test | Rub resistance | |
| Embodiment 1 | 0.3 | 95 | 0.7 | 1 | 7H | OK | OK | OK |
| Embodiment 2 | 0.32 | 93 | 0.5 | 1.5 | 5H | OK | OK | OK |
| Embodiment 3 | 1.00 | 93 | 0.7 | 1.5 | 7H | OK | OK | OK |
| Embodiment 4 | 2 | 92 | 0.7 | 1 | 7H | OK | OK | OK |
| Comparative example 1 | 7 | 92 | 0.8 | 1 | 7H | OK | OK | OK |
| Comparative example 2 | 5 | 92 | 0.8 | 1 | 7H | OK | OK | OK |
| Comparative example 3 | 3 | 90 | 0.8 | 1.7 | 7H | OK | OK | OK |
The optical testing instrument that the present invention selects is chromascope NDH2000N；Outer bend test is R5 (radius is 5 μm) 10
Ten thousand times, inner bending tests R3 (radius is 3 μm) 100,000 times；Rub resistance test, wear resistant instrument 1kg/2000 times, reflectivity is visible
Optical wavelength section 380-780nm test.
It should be pointed out that as described above is only to explain the preferred embodiments of the invention, it is right accordingly to be not intended to
The present invention is subject to any form of limitation, all to have any modification or change for making the related present invention under identical spirit
More, the scope that the invention is intended to protect should be all included in.
Claims (10)
1. a kind of flexible cover plate (100) characterized by comprising one is transparent soft with the first optical surface and the second optical surface
Property substrate (4), first optical surface side is equipped with the first hardened layer (3), in the first hardened layer (3) far from non-transparent flexible substrate
(4) an optical surface side is provided with the second hardened layer (2) of high refractive index, in second hardened layer (2) far from first
One optical surface side of hardened layer (3) is provided with anti-reflecting layer (1).
2. flexible cover plate (100) according to claim 1, which is characterized in that first hardened layer (3) and/or described
The material of second hardened layer (2) is selected from acrylic glue.
3. flexible cover plate (100) according to claim 1, which is characterized in that the refractive index model of first hardened layer (3)
It encloses for 1.48-1.53；The ranges of indices of refraction of second hardened layer (2) is 1.60-1.80.
4. flexible cover plate (100) according to claim 1, which is characterized in that first hardened layer (3) and transparent flexible
The absolute difference range of the refractive index of substrate (4) is between 0.05-0.3.
5. flexible cover plate (100) according to claim 1, which is characterized in that the anti-reflecting layer (1) with a thickness of 50-
500nm, the ranges of indices of refraction of the anti-reflecting layer (1) are 1.20-1.50.
6. flexible cover plate (100) according to claim 1, which is characterized in that the thickness range of first hardened layer (3)
It is 1-15 μm, the thickness range of second hardened layer (2) is 1-10 μm.
7. flexible cover plate (100) according to claim 1, which is characterized in that containing in the anti-reflecting layer (1) being capable of shape
At the Component units in gap.
8. flexible cover plate (100) according to claim 7, which is characterized in that the Component units are by with particle shape, fibre
The structure for tieing up at least one of shape, tabular shape is constituted.
9. flexible cover plate (100) according to claim 1, which is characterized in that the non-transparent flexible substrate (4) is selected from:
Benzene-type PI, soluble PI, at least one of polyamide-imides PAI and polyimide PEI.
10. flexible cover plate (100) according to claim 2, which is characterized in that the composition of the acrylic glue includes:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811621309.7A CN109870748A (en) | 2018-12-28 | 2018-12-28 | A kind of flexible cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811621309.7A CN109870748A (en) | 2018-12-28 | 2018-12-28 | A kind of flexible cover plate |
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| CN109870748A true CN109870748A (en) | 2019-06-11 |
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| CN201811621309.7A Pending CN109870748A (en) | 2018-12-28 | 2018-12-28 | A kind of flexible cover plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571251A (en) * | 2019-08-16 | 2019-12-13 | 武汉华星光电半导体显示技术有限公司 | Flexible cover plate, preparation method thereof and display device |
| CN111028683A (en) * | 2019-11-29 | 2020-04-17 | 湖南中天碧水膜科技有限公司 | Flexible cover plate |
| CN115083272A (en) * | 2022-06-10 | 2022-09-20 | 武汉华星光电半导体显示技术有限公司 | Flexible display device |
| TWI839884B (en) * | 2021-10-08 | 2024-04-21 | 南韓商Ｌｇ化學股份有限公司 | Cover window for display device of substrate-less type, display device including the same and method for manufacturing thereof |
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| CN101581801A (en) * | 2008-05-14 | 2009-11-18 | 东丽世韩有限公司 | Anti-reflection membrane with exellent scratch resistance property and surface sliding property |
| JP2011237789A (en) * | 2010-04-15 | 2011-11-24 | Nitto Denko Corp | Hard coat film, polarizing plate, image display device, and method for manufacturing hard coat film |
| CN103842856A (en) * | 2011-08-01 | 2014-06-04 | 福美化学工业株式会社 | Anti-reflective film and anti-reflective plate |
| CN104813198A (en) * | 2012-11-21 | 2015-07-29 | 乐金华奥斯有限公司 | Anti-reflective film, comprising hard coating layer, having superb optical characteristics |
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| CN1894601A (en) * | 2003-12-17 | 2007-01-10 | 株式会社普利司通 | Antireflection film, electromagnetic wave shielding light transmitting window material, gas discharge type light emitting panel, flat display panel, show window material and solar cell module |
| CN101581801A (en) * | 2008-05-14 | 2009-11-18 | 东丽世韩有限公司 | Anti-reflection membrane with exellent scratch resistance property and surface sliding property |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571251A (en) * | 2019-08-16 | 2019-12-13 | 武汉华星光电半导体显示技术有限公司 | Flexible cover plate, preparation method thereof and display device |
| WO2021031525A1 (en) * | 2019-08-16 | 2021-02-25 | 武汉华星光电半导体显示技术有限公司 | Flexible cover plate and manufacturing method therefor, and display device |
| US11357124B2 (en) | 2019-08-16 | 2022-06-07 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Flexible cover board, manufacturing method thereof, and display device |
| CN111028683A (en) * | 2019-11-29 | 2020-04-17 | 湖南中天碧水膜科技有限公司 | Flexible cover plate |
| TWI839884B (en) * | 2021-10-08 | 2024-04-21 | 南韓商Ｌｇ化學股份有限公司 | Cover window for display device of substrate-less type, display device including the same and method for manufacturing thereof |
| CN115083272A (en) * | 2022-06-10 | 2022-09-20 | 武汉华星光电半导体显示技术有限公司 | Flexible display device |
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Application publication date: 20190611 |