CN108680980A - A kind of novel anti-blue light optical thin film and preparation method thereof - Google Patents
A kind of novel anti-blue light optical thin film and preparation method thereof Download PDFInfo
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- CN108680980A CN108680980A CN201810753030.8A CN201810753030A CN108680980A CN 108680980 A CN108680980 A CN 108680980A CN 201810753030 A CN201810753030 A CN 201810753030A CN 108680980 A CN108680980 A CN 108680980A
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/26—Reflecting filters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention relates to optical thin films, more particularly, to a kind of applied to display, the novel anti-blue light optical thin film and preparation method thereof of LED screen or lighting area.In order to filter out the high energy shortwave blue light of the injury eyes from display and lighting apparatus, a kind of novel anti-blue light optical thin film of present invention offer and preparation method thereof.The anti-blue light optical thin film includes functional layer, base's material, priming coat and anti-blue light layer successively.Anti-blue light layer is by cholesteric liquid crystal molecules, chiral agent, photoinitiator and polymerization inhibitor composition.The blue light of 420 460nm wave bands of reflection that can be selective by the screw pitch of the cholesteryl liquid crystal formed in control anti-blue light layer, plays good anti-blue light effect.Novel anti-blue light optical thin film provided by the invention not only has preferable anti-blue light effect, but also with excellent optical properties such as high brightness and low colour casts.
Description
Technical field
The present invention relates to optical thin films, more particularly, to a kind of applied to the new of display, LED screen or lighting area
Type anti-blue light optical thin film and preparation method thereof.
Background technology
Studies have shown that the blue light (wavelength is the short wavelength light of 380-500nm ranges) in visible light can penetrate crystalline lens and arrive
Up to retina, retina will produce free radical through blue light long-term irradiation, and these free radicals can cause retinal pigment epithelium thin
Born of the same parents become feeble and die, and then photosensitive cell is caused to lack nutrient, finally cause vision impairment.And its extent of damage subtracting with optical wavelength
It is small and increase sharply.Blue light is studied to be confirmed to be the visible light most endangered.Medical research is also shown that human eye to 380-480nm
The purple light of wave band and some blue light depending on object and distinguish that color is insensitive, i.e., eyes have the color discrimination ability of the coloured light of the wave band
Limit, but the wave band optical wavelength is short, energy is high, it is larger to eye injury.Therefore, the irradiation of 480nm or less blue lights is effectively avoided
It is most important to protect eyes.
Back light is used as using red green blue tricolor excitation during LED is shown at present, the wave-length coverage of blue light is 420-
460nm, so exploitation anti-blue light protective film needs to carry out selective protection for this wave band.
Currently, the report in relation to anti-blue light protective film is more, preparation method mostly adds in organic dyestuff in the coating
Blue-light absorbers achieve the purpose that anti-blue light.Such as patent CN103991255A (publication date is on 08 20th, 2014) is public
A kind of anti-blue light screen protecting film and preparation method thereof is opened, which is that azo permanent yellow is added in anti-blue light layer is organic
The mode of dyestuff prepares anti-blue light screen protecting film；CN103935097A (publication date is on 07 23rd, 2017) discloses one
Kind anti-blue light cured film, the method which uses are that the premetallized dye class indigo plant of 0.5%-10% is added in anti-blue light layer
Light absorber achievees the purpose that anti-blue light.However anti-blue light protective film film is prepared by the way of organic dyestuff there are prodigious
Disadvantage, the first heavy metal in the blue-light absorbers in organic dyestuff are there are security risk and can lead to environmental pollution, anti-blue light
It is attached to outside protective film outside display screen and is also easy to produce life harm using with human contact；Secondly, the blue light absorption in organic dyestuff
Agent can cause anti-blue light film outward appearance colour cast serious, influence normal use after absorbing blue light.Most of all, in organic dyestuff
Blue-light absorbers fixed due to its molecular structure, the blue wave band of absorption be also it is fixed, cannot selectivity to certain wave
Section blue light is targetedly protected.
Therefore, simple and effective manufacturing process is sought, environmentally friendly low colour cast is developed, is capable of the blue to specific band of selectivity
The anti-blue light optical thin film that light is protected becomes field of optical films one and is badly in need of the project solved, is produced using electronics to people
Protect eyes are of great significance when product.
Invention content
In order to filter out the high energy shortwave blue light of the injury eyes from display and lighting apparatus, the present invention provides a kind of
Novel anti-blue light optical thin film and preparation method thereof.Novel anti-blue light optical thin film provided by the invention can not only selectivity
Protection effect is played to specific blue wave band, and with optics excellent properties such as low color, higher service life and high brightness.The present invention
The preparation method of the anti-blue light optical thin film of offer is environment friendly and pollution-free, simple and practicable, the value with industrialized production.
In order to solve the above-mentioned technical problem, the present invention uses following technical proposals：
The present invention provides a kind of novel anti-blue light optical thin film, and the novel anti-blue light optical thin film includes function successively
Layer, substrate layer, priming coat and anti-blue light layer.
Further, the novel anti-blue light optical thin film is made of base's material, functional layer, priming coat and anti-blue light layer；
Functional layer is arranged in the one side of the substrate layer, and priming coat is arranged in the another side of the substrate layer；The priming coat another side setting
Anti-blue light layer.
Further, the anti-blue light layer is cholesteryl liquid crystal coating.
Further, the anti-blue light layer includes cholesteric liquid crystal molecules.
Further, the raw material of the anti-blue light layer includes cholesteric liquid crystal molecules, chiral agent, photoinitiator and inhibition
Agent.
Further, the anti-blue light layer is by cholesteric liquid crystal molecules, chiral agent, photoinitiator and polymerization inhibitor composition.
Further, the anti-blue light layer includes following components：Cholesteric liquid crystal molecules 75-90 parts by weight；Chiral agent
1-20 parts by weight, photoinitiator 1-10 parts by weight and polymerization inhibitor 0.1-0.5 parts by weight.
Further, the anti-blue light layer is grouped as by following groups：Cholesteric liquid crystal molecules 75-90 parts by weight；It is chiral
Agent 1-20 parts by weight, photoinitiator 1-10 parts by weight and polymerization inhibitor 0.1-0.5 parts by weight.
Further, in the anti-blue light layer, cholesteric liquid crystal molecules, the total weight number of chiral agent and photoinitiator
It is 100 parts.
Further, in the preparation process of protective film, the material of the anti-blue light layer is first configured to anti-blue light coating fluid,
The anti-blue light coating fluid includes cholesteric liquid crystal molecules 75-90 parts by weight；Chiral agent 1-20 parts by weight, photoinitiator 1-10 weights
Measure part and polymerization inhibitor 0.1-0.5 parts by weight, organic solvent several pieces；Wherein, cholesteric liquid crystal molecules, chiral agent and photoinitiator
Total weight number be 100 parts.
Further, the solid content of the anti-blue light coating fluid is 30%-40%.
Further, the anti-blue light coating fluid includes the organic solvent of 150-300 parts by weight.
Further, the anti-blue light coating fluid includes the organic solvent of 150-233 parts by weight.
Further, the anti-blue light coating fluid includes the organic solvent of 180-210 parts by weight.
Further, the anti-blue light coating fluid includes the organic solvent of 180-200 parts by weight.
The anti-blue light layer is cholesteryl liquid crystal coating；The cholesteryl liquid crystal coating can be obtained by being formulated adjustment
It, can be with the blue light of the specific band of selective reflecting 420-460nm to specific screw pitch.
Further, the substrate layer material is selected from makrolon (PC), polyethylene terephthalate (PET), gathers
Amide resin (PA), polystyrene (PS), polyethylene (PE), polypropylene (PP), one in polymethyl methacrylate (PMMA)
Kind；Preferably, the substrate layer material is selected from polyethylene terephthalate (PET), polystyrene (PS) and polyethylene
(PE) one kind in or at least two combination.
Further, the thickness of the substrate layer is 1-300 μm；Optimization, the thickness of the base material is 25-200 μm.
Further, the functional layer is diffusion function layer or brightness enhancement function layer.
Further, the diffusion function layer includes the adhesive resin and 60-150 parts by weight of 100 parts by weight
Diffusion particle.
Further, the diffusion function layer includes the adhesive resin and 80-100 parts by weight of 100 parts by weight
Diffusion particle.
Further, the diffusion function layer includes the diffusion of the adhesive resin and 90 parts by weight of 100 parts by weight
Particle.
Further, the diffusion function layer thickness is 0.5-40 μm.
Further, the diffusion function layer thickness is 3-20 μm.
Further, the diffusion function layer thickness is 12-20 μm.
The functional layer is coated on the one side of substrate layer, and the effect of the functional layer, which is to provide anti-blue light optical thin film, to be made
With in the process to the even light of the diffusion of light or brightening effect.
Further, the adhesive in the diffusion function layer is in acrylic resin, polyurethane resin, epoxy resin
One kind or at least two mixture.The diffusion particle is spherical or elliposoidal.The diffusion particle is selected from poly- methyl-prop
E pioic acid methyl ester particle (PMMA), polybutyl methacrylate particle (PBMA), polystyrene particle (PS), silicon dioxide granule
(SiO2), TiO 2 particles (TiO2), barium sulfate particles (BaSO4) etc. in one kind or at least two combination.The diffusion
The particle size range of particle is 0.1-35 μm.Further, the particle size range of the diffusion particle is 5-15 μm.
Further, in the optical thin film of the anti-blue light, the functional layer is to be carved with the UV solidification coating (purple of micro-structure
Outside line solidify coating).
Further, the coating material being carved in the UV solidification coating of micro-structure is selected from acrylic resin, polyurethane
One kind in resin, epoxy resin or at least two mixture.The micro-structure can be micro-prism structure or lenticule
Structure, the prism bar height of the micro-prism structure are 5-60 μm, and corner angle are 70-120 °, prism bar can be wobble structure or
Person is the linear type of rule；The microlens structure is hemispherical or class hemispherical dome structure, the hemispherical or class hemispherical junction
A diameter of 5-200 μm of structure is highly the 1/5-2/3 of diameter.
The prism bar height of the micro-prism structure is 55 μm, and corner angle are 90 °.
The hemispherical or a diameter of 30 μm of class hemispherical dome structure, highly 1/2 for diameter.
The priming coat is coated on the another side of substrate layer, and the effect of the priming coat is to carry out friction orientation, favorably
In the orderly orientations of cholesteric liquid crystal molecules, increase the penetrability of light, is conducive to the brightness for improving anti-blue light optical thin film.
Further, the thickness of the priming coat is 1-5 μm.
Further, the primer thickness is 2-3 μm.
Further, the material of the priming coat is selected from polyimides, polyamide, polysiloxanes, polyurethane, polypropylene
Acid esters, one kind in epoxy resin or at least two combination.Preferably, the material of the priming coat is polyimides, is gathered
One kind in urethane and polyacrylate or at least two combination.
The another side in priming coat is arranged in the anti-blue light layer, and the effect of the anti-blue light layer is that selective reflection is special
The blue light of standing wave section.
Further, the cholesteric liquid crystal molecules are selected from the cholesteric liquid crystal molecules with acrylic double bond.
There are one acrylic double bond or the cholesteric liquid of two acrylic double bonds for the cholesteric liquid crystal molecules preferably band
Brilliant molecule.
Further, the cholesteric liquid crystal molecules are selected from the cholesteric with structural formula a, structural formula b or structural formula c
One kind in type liquid crystal molecule or at least two combination.The integer that m in wherein structural formula a is 0-8；In wherein structural formula b
N be 0-7 integer；X and y in wherein structural formula c are respectively the integer of 0-7.
Further, the chiral agent is selected from the chipal compounds with acrylic double bond.Further, the hand
The combination of the one kind or at least two of property agent in the chiral agent with structural formula e or structural formula f.Wherein, in structural formula e
P be 0-7 integer；Wherein, the n in structural formula f is the integer of 0-8.
Further, the photoinitiator is selected from 2- hydroxy-methyl phenyl-propane -1- ketone (photoinitiator 1173), 1-
Hydroxy-cyclohexyl phenyl ketone (photoinitiator 184), (light draws 2- methyl-1s-(4- methyl mercaptos phenyl) -2- morpholinyl -1- acetone
Send out agent 907), benzoin dimethylether (photoinitiator 651), 2,4,6- trimethyl benzoyl diphenyl base phosphine oxide benzophenone
(photoinitiator b P), one kind in 2,4,6- trimethylbenzoy-dipheny phosphine oxides (photoinitiator TPO) or to two kinds
Combination.
Further, the polymerization inhibitor is selected from hydroquinone, methylnaphthohydroquinone, p-hydroxyanisole or 2- tertiary butyls pair
One kind in benzenediol or at least two mixture.
Further, the thickness of the anti-blue light layer is 1-6 μm.
Further, in the transparent anti-blue light protective film, the thickness of substrate layer is preferably 25-200 μm, the thickness of priming coat
Preferably 2-3 μm of degree, the thickness of anti-blue light layer is preferably 2-4 μm.
Further, the anti-blue light layer includes following components：Cholesteric liquid crystal molecules 80-88 parts by weight；Chiral agent
6-14 parts by weight, photoinitiator 4-7 parts by weight and polymerization inhibitor 0.2-0.3 parts by weight.
Further, the m=4-6 in structural formula a；N=4 in structural formula b；X=3-4 in structural formula c, y=2-3；
P=4-5 in structural formula e；Q=6-8 in structural formula f.(preceding solution includes embodiment 4-7 and embodiment 9.)
Further, in the transparent anti-blue light protective film, the thickness of substrate layer is preferably 75-200 μm, the thickness of priming coat
Preferably 2-3 μm of degree, the thickness of anti-blue light layer is preferably 3-4 μm.
Further, the anti-blue light layer includes following components：Cholesteric liquid crystal molecules 85-88 parts by weight；Chiral agent
8-10 parts by weight, photoinitiator 4-5 parts by weight and polymerization inhibitor 0.2-0.3 parts by weight.
Further, the n=4 in structural formula b；X=3 in structural formula c, y=3；P=4 in structural formula e；Structural formula f
In q=6.(preceding solution includes embodiment 5 and embodiment 6.)
The principle of the anti-blue light of the anti-blue light layer of the present invention is that the principle of cholesteryl liquid crystal selective reflecting is utilized.Cholesteric
For type liquid crystal molecule the characteristics of hierarchal arrangement is presented in structure, molecular long axis is parallel to layer plane, and molecule is approximately along finger in layer
To arrow direction arrange, the long-range ordered orientation as nematic liquid crystal and it is orderly without position.In the influence of asymmetric chiral structure
Director orientation between lower adjacent layer regularly rotates by a certain angle successively, is continuously uniformly distorted along normal direction, layer
Layer is rotated into helicoidal structure.It is initial orientation state that the director orientation of liquid crystal molecule is replied after being rotated by 360 ° in layer, this
A periodic interlamellar spacing is known as screw pitch (P).The periodic helical structure of cholesteryl liquid crystal can generate Prague to incident ray
Reflection.When the cholesteryl liquid crystal of light vertical incidence planar texture, reflected light center wave band wavelength X and screw pitch relationship are：λ=
n P；Wave wide scope Δ λ=Δ n P of reflection；Wherein, n and Δ n is respectively the mean refractive index and birefringence of liquid crystal material,
It is the basic physical properties of liquid crystal material, is basically unchanged.Present invention design mixes chipal compounds in cholesteric liquid crystal molecules
(i.e. chiral agent) adjusts the size of screw pitch, to realizing the effect of selective reflecting specific band blue light.
The present invention also provides the application of the novel anti-blue light optical film, the novel anti-blue light optical thin film is answered
With display, LED screen or lighting area, the function of anti-blue light protect eyes is played.The novel anti-blue light optical thin film can
For use as the diffusion barrier or brightness enhancement film in the backlight module of display device.
The present invention also provides a kind of method preparing novel anti-blue light optical thin film, the preparation method includes following step
Suddenly：
(1) in the coated on one side functional layer coating fluid of substrate layer, functional layer is obtained after cured；
(2) in the another side painting bottom coating coating fluid of substrate layer, after being heating and curing, priming coat is made；
(3) friction is oriented to base coating surface with flannelette rod, base coating surface is made to generate direction one after friction
The groove (director) of cause；
(4) base coating surface after rubbing is coated with anti-blue light coating fluid, and baking oven heats after making coating surface drying by ultraviolet light
Anti-blue light layer is made in solidification；Obtain novel anti-blue light optical thin film.
Further, the anti-blue light coating fluid is composed of the following components：
Cholesteric liquid crystal molecules：75-90 parts by weight；
Chiral agent：1-20 parts by weight,
Photoinitiator：1-10 parts by weight,
Polymerization inhibitor：0.1-0.5 parts by weight,
Organic solvent：Several pieces,
Said components are weighed by weight to be added in organic solvent to stir evenly and are configured to quality solid content as 30%-40%
Anti-blue light coating fluid.
Further, the organic solvent described in step (4) can be there are commonly solvent, and what is enumerated can be fourth
Ketone, cyclohexanone, ethyl acetate, butyl acetate and n-butanol etc..
Further, in step (4), first each component in anti-blue light coating fluid is weighed by weight after adding, is stirred
Mixing half an hour is configured to finely dispersed anti-blue light coating fluid.The temperature of the baking oven is 60 DEG C -100 DEG C, and baking time is
30-100 seconds.
By control the cholesteryl liquid crystal formed in anti-blue light layer (anti-blue light layer) screw pitch can selectivity reflection
The blue light of 420-460nm wave bands plays good anti-blue light effect.Novel anti-blue light optical thin film provided by the invention not only has
There is preferable anti-blue light effect, but also with excellent optical properties such as high brightness and low colour casts.
Novel anti-blue light optical thin film provided by the invention includes protective film by base's material, functional layer, priming coat and anti-indigo plant
Photosphere is constituted；Functional layer can play the role of spreading even light or blast to light using process；Priming coat mainly rubs
It wipes and is orientated, be conducive to liquid crystal aligning ordered arrangement, increase the penetrability of light, be conducive to improve the bright of anti-blue light optical thin film
Degree；Anti-blue light layer have by adjusting in formula chiral agent and cholesteric liquid crystal molecules ratio adjust cholesteryl liquid crystal obtained
Pitch size, so as to selectivity reflection specific wavelength blue light, play the effect of anti-blue light.So the present invention provides
Novel anti-blue light optical thin film there is preferable high brightness, low colour cast and the regulatable excellent effect of anti-blue light wave band, can be with
Meet the different demands to anti-blue light.Novel anti-blue light optical thin film method provided by the invention uses the optics of current maturation
Prepared by film coating process, maturation simple for process meets the condition of industrial mass production.Anti-blue light provided by the invention simultaneously
Optical thin film using when be placed in the backlight module of display and use, avoid and direct body contact, effectively preventing
It learns substance to endanger the possibility that human body generates, while avoiding and occurring easily scratching service life when outer patch anti-blue light protective film uses
Short defect.
Compared with prior art, novel anti-blue light optical thin film provided by the invention is compared with traditional anti-blue light optical thin film
With apparent advantage, the disadvantage that colour cast existing for current anti-blue light film is serious and brightness is low is overcome well；And it solves
The problem of traditional anti-blue light protective film is to the blue wave band non-selectivity controllable operating of strick precaution.Meanwhile it is provided by the invention anti-
Blue light optical method for manufacturing thin film is simple for process, easily operated, also the environment-friendly advantage with heavy metal free pollution.
Novel anti-blue light optical thin film provided by the invention is a kind of high brightness, low colour cast, alternative reflection blue light
Novel anti-blue light protective film, especially suitable for optics display field, especially suitable for display, LED screen or lighting area, but not
It is limited to product listed above.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of anti-blue light optical thin film provided by the invention；
Fig. 2 is the structural schematic diagram of another anti-blue light optical thin film provided by the invention；
Fig. 3 is the structural schematic diagram of another anti-blue light optical thin film provided by the invention.
Specific implementation mode：
With reference to embodiment and attached drawing, the invention will be further elaborated, and following embodiment is to the detailed of the present invention
It describes in detail bright, is not the restriction to the claimed range of the present invention.The method is conventional method unless otherwise instructed.It is described
Raw material are commercial product unless otherwise instructed.
As shown in Figure 1, the present invention provides a kind of anti-blue light optical thin film, the anti-blue light optical thin film includes functional layer
101, substrate layer 102, priming coat 103 and anti-blue light layer 104；The functional layer 103 is diffusion function layer.The diffusion function layer
Including diffusion microballon and adhesive.
As shown in Fig. 2, the present invention provides a kind of anti-blue light optical thin film, the anti-blue light optical thin film includes functional layer
201, substrate layer 202, priming coat 203 and anti-blue light layer 204；The functional layer 201 is micro-prism structure, and prism bar is straight line
Type.
As shown in figure 3, the present invention provides a kind of anti-blue light optical thin film, the anti-blue light optical thin film includes functional layer
301, substrate layer 302, priming coat 303 and anti-blue light layer 304；The functional layer 301 is hemispheric microlens structure.
The present invention relates to the evaluations of the novel anti-blue light optical thin film optical property to preparation.Required material and facility
It is current material and equipment.
The preparation method of novel anti-blue light optical thin film provided by the invention includes the following steps：
(1) in the coated on one side functional layer coating fluid of substrate layer, functional layer is obtained after cured；
(2) in the another side painting bottom coating coating fluid of substrate layer, after being heating and curing, priming coat is made；
(3) friction is oriented to base coating surface with flannelette rod, so that base coating surface is generated groove after friction and takes
To；
(4) base coating surface after rubbing is coated with anti-blue light coating fluid, and baking oven heats after making coating surface drying by ultraviolet light
Anti-blue light layer is made in solidification；Obtain novel anti-blue light optical thin film.
The anti-blue light coating fluid is composed of the following components：
Cholesteric liquid crystal molecules：75-90 parts by weight；
Chiral agent：1-20 parts by weight,
Photoinitiator：1-10 parts by weight,
Polymerization inhibitor：0.1-0.5 parts by weight,
Organic solvent：Several pieces,
Said components are weighed by weight to be added in organic solvent to stir evenly and are configured to quality solid content as 30%-40%
Anti-blue light coating fluid.
Further, the organic solvent described in step (4) can be that there are commonly solvents.Described in step (4)
Organic solvent can be butanone, cyclohexanone, ethyl acetate, one kind in butyl acetate and n-butanol or at least two combination.
Further, in step (4), first each component in anti-blue light coating fluid is weighed by weight ratio and is added
Afterwards, stirring half an hour is configured to finely dispersed anti-blue light coating fluid, surface shape of the anti-blue light coating solution in priming coat
It after anti-blue light coating, is heated using baking oven, the temperature of the baking oven is 60 DEG C -100 DEG C, and baking time is 30-100 seconds.It
Afterwards, anti-blue light coating is cured using ultraviolet light, and anti-blue light layer is obtained after solidification.
The main light for the novel anti-blue light optical thin film that the embodiment of the present invention and comparative example provide is tested in the following manner
Learn performance.
1, light transmittance and mist degree test：The novel anti-blue light optical thin film to be measured for taking an A4 is put into the survey of light transmittance mist degree
Its light transmittance or haze value are measured in examination instrument (NDH7000).
2, luminance test：The novel anti-blue light optical thin film to be measured for taking an A4 size, 20 cun are put into according to test structure
It in backlight module, is lighted under the voltage of 24V, its coloration is tested with luminance meter (BH-7).
3, coloration is tested：The novel anti-blue light optical thin film to be measured for taking an A4 size, 20 cun are put into according to test structure
It in backlight module, is lighted under the voltage of 24V, its coloration is tested with luminance meter (BH-7).
4, blue light isolation rate is tested：It takes one 5 cun of anti-blue light diaphragm to be measured to be put into test wavelength in spectrophotometer to be
The barrier situation of the blue light of 420nm-460nm.Test result is the ratio (reflection for the blu-ray reflection that wavelength is 420nm-460nm
Blue light amount account for the ratio of the blue light total amount being irradiated on optical thin film), referred to as blue light isolation rate.Blue light isolation rate is higher, says
The blue light of bright reflection is more, and the effect of anti-blue light is better.
5, blu-ray reflection peak value test：It is tested in spectrogram in blue light rejection rate and marks the corresponding wave of blue light rejection rate peak
Long is blu-ray reflection peak value.The central value for the blue wave band that blu-ray reflection peak distance target is taken precautions against is closer, anti-blue light effect
Fruit is better.That is central value 440nm of the blu-ray reflection peak value from target wave band 420-460nm is closer, and anti-blue light effect is better.
Embodiment 1
A kind of novel anti-blue light optical thin film provided by the invention, the protective film include functional layer, base's material, bottom successively
Coating and anti-blue light layer.
The preparation method of the novel anti-blue light optical thin film includes the following steps：
(1) in the coated on one side functional layer coating fluid of substrate layer, functional layer is obtained after cured；
(2) in the another side painting bottom coating coating fluid of substrate layer, after being heating and curing, priming coat is made；
(3) friction is oriented to base coating surface with flannelette rod, so that base coating surface is generated groove after friction and takes
To；
(4) base coating surface after rubbing is coated with anti-blue light coating fluid, and baking oven heats after making coating surface drying by ultraviolet light
Anti-blue light layer is made in solidification；Obtain novel anti-blue light optical thin film.
Wherein, substrate layer is PET materials, and thickness is 100 μm；Functional layer is diffusion function layer, including 100 parts by weight
The particle size range of the PS diffusion particles of adhesive for polyurethane and 60 parts by weight, diffusion particle is 0.1-0.5 μm, and shape is ball
Shape, diffusion function layer thickness are 0.5-2 μm, as shown in Figure 1；Priming coat material is epoxy resin, and coating layer thickness is 5 μm；Anti- indigo plant
Photosphere coating layer thickness is 1 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is a, and wherein m=8, parts by weight are 90 parts by weight；The structural formula of chiral agent
For e, wherein p=0, parts by weight are 9 parts by weight；Photoinitiator is 2- hydroxy-methyl phenyl-propane -1- ketone (photoinitiators
1173), parts by weight are 1 parts by weight；Polymerization inhibitor is hydroquinone, and parts by weight are 0.5 parts by weight；Organic solvent is hexamethylene
Ketone, parts by weight are 233 parts by weight.
Said components are weighed by weight be added in organic solvent stir evenly be configured to quality solid content be 30% it is anti-
Anti-blue light layer is made in blue light coating solution on priming coat after ultraviolet light cures.
Embodiment 2
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PMMA materials, and thickness is 1 μm；Work(
Ergosphere is the UV functional layers of micro-prism structure, and micro-prism structure is acrylic resin material, the prism bar height of micro-prism structure
It it is 5 μm, corner angle are 70 °, and prism bar is contour linear type, as shown in Figure 2；Priming coat material is polyurethane, and coating layer thickness is 1 μ
m；Anti-blue light layer coating layer thickness is 2 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is b, and wherein n=7, parts by weight are 75 parts by weight；The structural formula of chiral agent
For f, wherein q=0, parts by weight are 20 parts by weight；Photoinitiator is 2,4,6- trimethylbenzoy-dipheny phosphine oxides
(TPO), parts by weight are 5 parts by weight；Polymerization inhibitor is methylnaphthohydroquinone, and parts by weight are 0.1 parts by weight；Organic solvent is hexamethylene
Ketone, parts by weight are 200 parts by weight.
Embodiment 3
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PP materials, and thickness is 300 μm；Work(
Ergosphere is the UV functional layers of microlens structure, and microlens structure is polyurethane resin material, and microlens structure is a diameter of 25 μm
Hemispherical projections, height of projection be 10 μm, as shown in Figure 3；Priming coat material is epoxy resin, and coating layer thickness is 5 μm；Anti- indigo plant
Photosphere coating layer thickness is 6 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is c, wherein x=7, y=7, and parts by weight are 77 parts by weight；Chiral agent is two
The combination of kind chipal compounds, one of which structural formula are e, and wherein p=4, parts by weight are 5 parts by weight；Another structure
Formula is f, wherein q=8, and parts by weight are 10 parts by weight；Photoinitiator is 2- methyl-1s-(4- methyl mercaptos phenyl) -2- morpholinyls -
1- acetone (907), parts by weight are 8 parts by weight；Polymerization inhibitor is p-hydroxyanisole, and parts by weight are 0.5 parts by weight；It is organic molten
Agent is butanone, and parts by weight are 150 parts by weight.
Embodiment 4
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PE materials, and thickness is 75 μm；Work(
Ergosphere is diffusion function layer, includes the PMMA diffusion particles of the adhesive for polyurethane of 100 parts by weight and 80 parts by weight, is spread
The grain size of particle is 10 μm, and appearance is spherical shape, and diffusion function layer thickness is 8-15 μm；Priming coat material is polyurethane, applies thickness
Degree is 2 μm；Anti-blue light layer coating layer thickness is 3 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is a, and wherein m=6, parts by weight are 80 parts by weight；The structural formula of chiral agent
For f, wherein q=8, parts by weight are 13 parts by weight；Photoinitiator is 2- hydroxy-methyl phenyl-propane -1- ketone (1173), weight
Number is 7 parts by weight；Polymerization inhibitor is hydroquinone, and parts by weight are 0.3 parts by weight；Organic solvent is butyl acetate, parts by weight
Number is 190 parts by weight.
Embodiment 5
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PET materials, and thickness is 200 μm；
Functional layer is the UV functional layers of micro-prism structure, and micro-prism structure is acrylic resin material, and the prism bar of micro-prism structure is high
Degree is 55 μm, and corner angle are 90 °, and prism bar is contour linear type；Priming coat material is polyimides, and coating layer thickness is 3 μm；Anti- indigo plant
Photosphere coating layer thickness is 4 μm
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is b, and wherein n=4, parts by weight are 88 parts by weight；The structural formula of chiral agent
For f, wherein q=6, parts by weight are 8 parts by weight；Photoinitiator is 1- hydroxy-cyclohexyls phenyl ketone (184), and parts by weight are
4 parts by weight；Polymerization inhibitor is p-hydroxyanisole, and parts by weight are 0.3 parts by weight；Organic solvent is butyl acetate, parts by weight
For 180 parts by weight.
Embodiment 6
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PET materials, and thickness is 75 μm；Work(
Ergosphere is diffusion function layer, includes the PMMA diffusion particles of the adhesive for polyurethane of 100 parts by weight and 90 parts by weight, is spread
The grain size of particle is 15 μm, and appearance is spherical shape, and diffusion function layer thickness is 12-20 μm；Priming coat material is polyimides, coating
Thickness is 2 μm；Anti-blue light layer coating layer thickness is 3 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is c, wherein x=3, y=3, and parts by weight are 85 parts by weight；The knot of chiral agent
Structure formula is e, and wherein p=4, parts by weight are 10 parts by weight；Photoinitiator is 1- hydroxy-cyclohexyls phenyl ketone (184), weight
Number is 5 parts by weight；Polymerization inhibitor is hydroquinone, and parts by weight are 0.2 parts by weight；Organic solvent is cyclohexanone, parts by weight
For 200 parts by weight.
Embodiment 7
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PS materials, and thickness is 25 μm；Work(
Ergosphere is the UV functional layers of microlens structure, and microlens structure is acrylic resin material, and microlens structure is a diameter of 30 μm
Hemispherical projections, height of projection be 15 μm；Priming coat material is polyurethane, and coating layer thickness is 3 μm；Anti-blue light layer coating layer thickness
It is 3 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
Cholesteric liquid crystal molecules are the combination of two kinds of cholesteric liquid crystal molecules, and the structural formula of one of which is a, wherein m=
4, parts by weight are 60 parts by weight；Another structural formula is a, and wherein m=6, parts by weight are 28 parts by weight；The knot of chiral agent
Structure formula is f, and wherein q=6, parts by weight are 6 parts by weight；Photoinitiator is 2- methyl-1s-(4- methyl mercaptos phenyl) -2- morpholines
Base -1- acetone (907), parts by weight are 6 parts by weight；Polymerization inhibitor is methylnaphthohydroquinone, and parts by weight are 0.2 parts by weight；It is organic molten
Agent is cyclohexanone, and parts by weight are 200 parts by weight.
Embodiment 8
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PA materials, and thickness is 250 μm；Work(
Ergosphere is the UV functional layers of microlens structure, and microlens structure is epoxy resin material, and microlens structure is a diameter of 5-200 μm
Hemispherical projections, height of projection be diameter 1/5-2/3；Priming coat material is polyimides, and coating layer thickness is 5 μm；Anti- indigo plant
Photosphere coating layer thickness is 5 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is b, and wherein n=0, parts by weight are 80 parts by weight；The structural formula of chiral agent
For e, wherein p=7, parts by weight are 16 parts by weight；Photoinitiator is 2- methyl-1s-(4- methyl mercaptos phenyl) -2- morpholinyls -1-
Acetone (907), parts by weight are 4 parts by weight；Polymerization inhibitor is p-hydroxyanisole, and parts by weight are 0.4 parts by weight；Organic solvent
For n-butanol, parts by weight are 160 parts by weight.
Embodiment 9
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PET materials, and thickness is 75 μm；Work(
Ergosphere is diffusion function layer, includes the PMMA diffusion particles of the epoxy resin adhesive of 100 parts by weight and 100 parts by weight,
The grain size of diffusion particle is 5 μm, and shape is elliposoidal, and diffusion function layer thickness is 3-8 μm；Priming coat material is polyacrylic acid
Ester, coating layer thickness are 3 μm；Anti-blue light layer coating layer thickness is 2 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is c, wherein x=4, y=2, and parts by weight are 82 parts by weight；The knot of chiral agent
Structure formula is e, and wherein p=5, parts by weight are 14 parts by weight；Photoinitiator is 2- hydroxy-methyl phenyl-propane -1- ketone (1173),
Parts by weight are 4 parts by weight；Polymerization inhibitor is methylnaphthohydroquinone, and parts by weight are 0.3 parts by weight；Organic solvent is n-butanol, weight
Number is 210 parts by weight.
Embodiment 10
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PC materials, and thickness is 150 μm；Work(
Ergosphere is the UV functional layers of micro-prism structure, and micro-prism structure is acrylic resin material, the prism bar height of micro-prism structure
It it is 60 μm, corner angle are 120 °, and prism bar is contour linear type；Priming coat material is polyamide, and coating layer thickness is 4 μm；Anti-blue light
Layer coating layer thickness is 5 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
Cholesteric liquid crystal molecules are the combination of two kinds of cholesteric liquid crystal molecules, and the structural formula of one of which is a, wherein m=
4, parts by weight are 49 parts by weight；Another structural formula is b, and wherein n=5, parts by weight are 40 parts by weight；The knot of chiral agent
Structure formula is e, and wherein p=5, parts by weight are 5 parts by weight；Photoinitiator is 1- hydroxy-cyclohexyls phenyl ketone (184), parts by weight
Number is 6 parts by weight；Polymerization inhibitor is methylnaphthohydroquinone, and parts by weight are 0.4 parts by weight；Organic solvent is cyclohexanone, and parts by weight are
160 parts by weight.
Embodiment 11
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PET materials, and thickness is 188 μm；
Functional layer is diffusion function layer, includes the SiO of the adhesive for polyurethane of 100 parts by weight and 150 parts by weight2Diffusion particle,
The particle size range of diffusion particle is 25-35 μm, and shape is elliposoidal, and diffusion function layer thickness is 20-40 μm；Priming coat material is
Polyacrylate, coating layer thickness are 2 μm；Anti-blue light layer coating layer thickness is 6 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is b, and wherein n=4, parts by weight are 89 parts by weight；The structural formula of chiral agent
For f, wherein q=1, parts by weight are 1 parts by weight；Photoinitiator is 1- hydroxy-cyclohexyls phenyl ketone (184), and parts by weight are
10 parts by weight；Polymerization inhibitor is 2- tert-butyl hydroquinone, and parts by weight are 0.5 parts by weight；Organic solvent is butanone, parts by weight
For 150 parts by weight.
Embodiment 12
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PC materials, and thickness is 75 μm；Work(
Ergosphere is diffusion function layer, includes the TiO of the epoxy resin adhesive of 100 parts by weight and 90 parts by weight2Diffusion particle expands
The particle size range of shot is 0.1-35 μm, and shape is elliposoidal, and diffusion function layer thickness is 10-25 μm；Priming coat material is
Polysiloxanes, coating layer thickness are 4 μm；Anti-blue light layer coating layer thickness is 2 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is c, wherein x=0, y=0, and parts by weight are 80 parts by weight；The knot of chiral agent
Structure formula is f, and wherein q=3, parts by weight are 15 parts by weight；Photoinitiator is 2- methyl-1s-(4- methyl mercaptos phenyl) -2- morpholines
Base -1- acetone (907), parts by weight are 5 parts by weight；Polymerization inhibitor is 2- tert-butyl hydroquinone, and parts by weight are 0.4 weight
Part；Organic solvent is butanone, and parts by weight are 210 parts by weight.
Comparative example 1
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PET materials, and thickness is 100 μm；
Functional layer is diffusion function layer, includes the PMMA diffusion particles of the adhesive for polyurethane of 100 parts by weight and 90 parts by weight, is expanded
The grain size of shot is 10 μm, and appearance is spherical shape；Priming coat material is polyimides, and coating layer thickness is 5 μm.The comparative example does not have
Anti-blue light layer is set.
Comparative example 2
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PET materials, and thickness is 75 μm；Work(
Ergosphere is diffusion function layer, includes the PMMA diffusion particles of the adhesive for polyurethane of 100 parts by weight and 90 parts by weight, is spread
The grain size of particle is 10 μm, and appearance is spherical shape；Priming coat material is polyimides, and coating layer thickness is 2 μm；Anti-blue light layer applies thickness
Degree is 3 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is c, wherein x=3, y=3, and parts by weight are 95 parts by weight；The knot of chiral agent
Structure formula is e, and wherein p=4, parts by weight are 0 parts by weight；Photoinitiator is 1- hydroxy-cyclohexyls phenyl ketone (184), parts by weight
Number is 5 parts by weight；Polymerization inhibitor is hydroquinone, and parts by weight are 0.2 parts by weight；Organic solvent is cyclohexanone, and parts by weight are
190 parts by weight.
Comparative example 3
Novel anti-blue light optical thin film as described in Example 1, the substrate layer are PET materials, and thickness is 75 μm；Work(
Ergosphere is the UV functional layers of micro-prism structure, and micro-prism structure is acrylic resin material, the prism bar height of micro-prism structure
It it is 55 μm, corner angle are 90 °, and prism bar is contour linear type；Priming coat material is polyimides, and coating layer thickness is 7 μm；Anti-blue light
Layer coating layer thickness is 3 μm.
Wherein, the anti-blue light coating fluid is composed of the following components：
The structural formula of cholesteric liquid crystal molecules is c, wherein x=3, y=3, and parts by weight are 70 parts by weight；The knot of chiral agent
Structure formula is e, and wherein p=4, parts by weight are 25 parts by weight；Photoinitiator is 1- hydroxy-cyclohexyls phenyl ketone (184), weight
Number is 5 parts by weight；Polymerization inhibitor is hydroquinone, and parts by weight are 0.2 parts by weight；Organic solvent is cyclohexanone, parts by weight
For 200 parts by weight.
Comparative example 4
Novel anti-blue light optical thin film as described in Example 6, wherein being omitted in the preparation of novel anti-blue light optical thin film
Step (3), i.e. priming coat do not carry out the friction orientation of step (3), anti-blue light coating fluid are coated with directly on priming coat, then
Ultraviolet light cures to obtain anti-blue light layer.
Comparative example 5
It is specifically Chinese patent according to anti-blue light protective film prepared by existing anti-blue light protection membrane preparation method
The anti-blue light protective film that in embodiment 9 prepared by preparation method in specification disclosed in CN103935097A.
The optical performance test comparison of anti-blue light optical thin film obtained by 1 embodiment of the present invention of table and comparative example
The test result of the embodiment 1-12 and comparative example 1-5 shown in the table 1 can obtain, provided by the invention novel anti-
Blue light optical film has the optical property of preferable light transmittance and higher brightness and low colour cast, while meeting high efficiency blue
While barrier property, it is also an option that the blue light of the reflection specific band of property, has higher anti-blue light effect.The present invention is logical
The ratio for crossing chiral agent in adjustment anti-blue light coating fluid, to regulate and control the screw pitch of cholesteryl liquid crystal anti-blue light layer, to regulate and control blue light
The size of reflection peak obtains the novel anti-blue light optical thin film of blu-ray reflection peak value and target's center's value (440nm) most proximity.
Wherein, the ratio of chiral agent is bigger in anti-blue light coating fluid, and blu-ray reflection peak value is smaller；The ratio of chiral agent in anti-blue light coating fluid
Example is smaller, and blu-ray reflection peak value is bigger.
Embodiment 6 and 4 comparative analysis of comparative example can obtain, step (3) in the step of preparing novel anti-blue light optical thin film
Friction orientation is carried out to priming coat, can effectively improve the translucency of anti-blue light protective film；Embodiment 1-12 and comparative example 1 and right
5 comparative analysis of ratio can obtain, and anti-blue light protection prepared by the present invention has smaller chromaticity coordinates (Wx and Wy), i.e. colour cast smaller,
Appearance is easier to receive.
Wherein, the embodiment of the present invention 4-7 and 9 prepare novel anti-blue light optical thin film have both higher light transmittance and
While brightness, also there is lower colour cast, while there is higher blue light rejection rate and comparatively ideal blu-ray reflection peak value.System
The light transmittance of standby novel anti-blue light optical thin film is at least 85.00%, and brightness is at least 3757, Wx≤0.3297, and Wy≤
0.3314；Blue light rejection rate is not less than 40%, and blu-ray reflection peak value is closer to target's center's value in 431-448nm.Particularly,
The comprehensive performance of novel anti-blue light optical thin film prepared by embodiment 5 and 6 is best, and light transmittance is at least 86.66%, and brightness is extremely
It is 3778, Wx≤0.3246, Wy≤0.3304 less；Blue light rejection rate be not less than 42%, blu-ray reflection peak value be respectively 443nm and
437nm, closest to target's center value 440nm.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is every
The equivalent changes and modifications done according to the content of present invention are encompassed by the scope of the claims of the present invention.
Claims (10)
1. a kind of novel anti-blue light optical thin film, which is characterized in that the novel anti-blue light optical thin film successively include functional layer,
Substrate layer, priming coat and anti-blue light layer.
2. novel anti-blue light optical thin film according to claim 1, which is characterized in that the novel anti-blue light optical thin film
It is made of base's material, functional layer, priming coat and anti-blue light layer；Functional layer is arranged in the one side of the substrate layer, the substrate layer
Priming coat is arranged in another side；Anti-blue light layer is arranged in the priming coat another side.
3. novel anti-blue light optical thin film according to claim 1, which is characterized in that the anti-blue light layer is cholesteric
Liquid crystal coatings.
4. novel anti-blue light optical thin film according to claim 1, which is characterized in that the anti-blue light layer includes cholesteric
Liquid crystal molecule.
5. novel anti-blue light optical thin film according to claim 1, which is characterized in that the raw material of the anti-blue light layer includes
Cholesteric liquid crystal molecules, chiral agent, photoinitiator and polymerization inhibitor.
6. novel anti-blue light optical thin film according to claim 5, which is characterized in that the anti-blue light layer includes following
Component：Cholesteric liquid crystal molecules 75-90 parts by weight；Chiral agent 1-20 parts by weight, photoinitiator 1-10 parts by weight and polymerization inhibitor
0.1-0.5 parts by weight.
7. novel anti-blue light optical thin film according to claim 4, which is characterized in that the cholesteric liquid crystal molecules choosing
Come with the cholesteric liquid crystal molecules of acrylic double bond.
8. novel anti-blue light optical thin film according to claim 1, which is characterized in that the functional layer is diffusion function layer
Or brightening structure layer.
9. a kind of application of novel anti-blue light optical thin film according to any one of claim 1-8, which is characterized in that institute
It states novel anti-blue light optical thin film and is applied to display, LED screen or lighting area.
10. a kind of method preparing novel anti-blue light optical thin film described in claim 1, which is characterized in that the method
Include the following steps：
(1) in the coated on one side functional layer coating fluid of substrate layer, functional layer is obtained after cured；
(2) in the another side painting bottom coating coating fluid of substrate layer, priming coat is obtained after being heating and curing；
(3) it is rubbed to base coating surface with flannelette rod, base coating surface is made to generate the consistent groove in direction after friction；
(4) it is coated with anti-blue light coating fluid in base coating surface, cures by ultraviolet light after heating surface drying and anti-blue light layer is made；Make
Obtain novel anti-blue light optical thin film.
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Cited By (2)
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