CN106054304A - Polarizing plate, manufacturing method thereof and corresponding device - Google Patents
Polarizing plate, manufacturing method thereof and corresponding device Download PDFInfo
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- CN106054304A CN106054304A CN201610696816.1A CN201610696816A CN106054304A CN 106054304 A CN106054304 A CN 106054304A CN 201610696816 A CN201610696816 A CN 201610696816A CN 106054304 A CN106054304 A CN 106054304A
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- liquid crystal
- cholesteric liquid
- blue light
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- polarizer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
Abstract
The invention relates to a polarizing plate, a manufacturing method thereof and a corresponding device. In the prior art, the schemes such as surface pad pasting, software adjusting and LED changing adopted by an existing liquid crystal display screen for reducing blue light damages respectively have certain defects, so that how to reduce blue light is the problem to be solved at present. The polarizing plate comprises a polarizing layer capable of reflecting blue light. The polarizing layer comprises a PVA film and a reflection structure distributed in the PVA film and incompatible with the PVA film. The reflection structure comprises cholesteryl phase liquid crystals. The arranging direction of the cholesteryl phase liquid crystals is identical with the polarizing direction of the polarizing layer. According to the invention, the reflection structure is added to the PVA film of the polarizing layer, and the arranging direction of the cholesteryl phase liquid crystals included in the reflection structure is identical with the polarizing direction of the polarizing layer, so that the reflection structure is capable of reflecting blue light; and when the polarizing plate is applied to a display device, the blue light entering a human eye can be effectively reduced, so that a blue light prevention effect is achieved.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of Polarizer, its manufacture method and related device.
Background technology
Along with popularizing of electronic digital product, people be unable to do without the digital product such as computer, notebook, mobile phone, TV every day
Product, and the screen major part of these electronic equipments is LCDs.LCDs is it is generally required to use LED (Light
Emitting Diode, light emitting diode) backlight is provided, why the white light that wherein LED light source is launched can form master
If by the blue light excitated fluorescent powder of 440nm-460nm wavelength, the lowest ability of exciting of wavelength is the strongest.Owing to shortwave blue light has pole
High-energy, it is possible to penetrate crystalline lens and go directly retina, thus the eyes of user can be caused certain injury, severe patient even can
Cause the permanent damage of vision.Currently in order to reduce blue light injury, each LCD manufacturer mainly by film on surface, software adjustment,
Change the schemes such as LED and carry out anti-blue light.But it is uneven that film on surface has optical parametric, thereby increases and it is possible to the shortcoming causing secondary injury；
Software adjustment makes RGB brightness reduce simultaneously, big to display brightness loss；Change LED, use the blue light of long wavelength to excite, make
Blue light launching efficiency reduces, and LED lamp bar power consumption increases, thus increases the power consumption of liquid crystal display.
In sum, current LCDs is in order to reduce blue light injury, the film on surface taked, software adjustment, change
All there is certain defect in the schemes such as LED, thus the most effectively reducing blue light is current problem demanding prompt solution.
Summary of the invention
A kind of Polarizer, its manufacture method and the related device that the embodiment of the present invention provides, in order to solve current liquid crystal
Display screen is in order to reduce blue light injury, and the scheme such as the film on surface taked, software adjustment, change LED all exists certain defect, thus
The most effectively reducing blue light is current problem demanding prompt solution.
A kind of Polarizer that the embodiment of the present invention provides, including the polarizing layer that can reflect blue light；Described polarizing layer includes:
PVA film, and be distributed in described PVA film and catoptric arrangement mutual exclusive with described PVA film；Wherein,
Described catoptric arrangement includes the polarization of cholesteric liquid crystal, the orientation of described cholesteric liquid crystal and described polarizing layer
Direction is identical.
Polarizer in the present invention, increases catoptric arrangement in the PVA film of polarizing layer, and make catoptric arrangement comprises
The orientation of cholesteric liquid crystal is identical with the polarization direction of polarizing layer, and then makes catoptric arrangement can reflect blue light, works as application
Time in display device, can effectively reduce the blue light entering human eye, thus reach the effect of anti-blue light.
It is also preferred that the left described catoptric arrangement includes: reflect the left-handed cholesteric liquid crystal microcapsule of left-handed blue light, and the reflection right side
The dextrorotation cholesteric liquid crystal microcapsule of rotation blue light.
It is also preferred that the left the molal quantity of left-handed cholesteric liquid crystal microcapsule described in described catoptric arrangement and described dextrorotation cholesteric phase
The molal quantity of liquid crystal microcapsule is identical；
The centre wavelength of the left-handed blue light of described left-handed cholesteric liquid crystal microcapsule reflection and described dextrorotation cholesteric liquid crystal
The centre wavelength of the dextrorotation blue light of microcapsule reflection is equal.
It is also preferred that the left the inside packing material of described left-handed cholesteric liquid crystal microcapsule is nematic liquid crystal and left-handed chirality adds
Add the mixture of agent；
The inside packing material of described dextrorotation cholesteric liquid crystal microcapsule is nematic liquid crystal and right-handed chirality additive
Mixture.
It is also preferred that the left the cyst material of described left-handed cholesteric liquid crystal microcapsule and described dextrorotation cholesteric liquid crystal microcapsule is
One in following any material or combination:
Polymetylmethacrylate, gelatin, arabic gum, or Lauxite.
It is also preferred that the left the little molecule cholesteric liquid crystal mixture that described catoptric arrangement is reflection specific wavelength blue light or macromolecule
Cholesteric liquid crystal.
It is also preferred that the left the mixture that described little molecule cholesteric liquid crystal mixture is nematic liquid crystal, chiral additives；Or,
Nematic liquid crystal, chiral additives, ultraviolet polymerisable monomer and the mixture of light trigger.
It is also preferred that the left described macromolecule cholesteric liquid crystal is siloxane chain liquid crystal polymer, or the cyclosiloxane tetramer.
A kind of display device that the embodiment of the present invention provides, including the array base palte being oppositely arranged and opposite substrate, and
It is arranged on described opposite substrate and deviates from the Polarizer of described array base palte side；Described Polarizer provides for the embodiment of the present invention
Above-mentioned Polarizer.
A kind of method making the above-mentioned Polarizer that the embodiment of the present invention provides that the embodiment of the present invention provides, including being formed
The step of polarizing layer, the step of described formation polarizing layer specifically includes:
By the material mix homogeneously according to a certain percentage of PVA material and catoptric arrangement, form PVA film；
After the described PVA film attached iodine of heat, the polarization direction along described polarizing layer stretches, and formation can reflect blue light
Polarizing layer.
It is also preferred that the left described catoptric arrangement includes: left-handed cholesteric liquid crystal microcapsule and dextrorotation cholesteric liquid crystal microcapsule；Will
The material of transparent medium and catoptric arrangement mix homogeneously according to a certain percentage, before forming PVA film, also includes:
Left-handed cholesteric liquid crystal microcapsule and dextrorotation cholesteric phase liquid is made by one or more methods in following method
Brilliant microcapsule:
Solvent evaporated method, complex coacervation and situ aggregation method.
It is also preferred that the left described PVA material, described left-handed cholesteric liquid crystal microcapsule and described dextrorotation cholesteric liquid crystal microcapsule
The mass ratio of mixing is 3:1:1.
It is also preferred that the left described catoptric arrangement is little molecule cholesteric liquid crystal mixture；Described PVA material and little molecule cholesteric phase
The mass ratio of liquid crystal compound mixing is 7:3.
It is also preferred that the left by after the described PVA film attached iodine of heat, after stretching along the polarization direction of described polarizing layer, formed
Before can reflecting the polarizing layer of blue light, also include:
PVA film after stretching is carried out ultraviolet light irradiation, makes the ultraviolet polymerisable monomer comprised in catoptric arrangement, fixing
The cholesteric liquid crystal comprised in described catoptric arrangement planar alignment direction now.
It is also preferred that the left described catoptric arrangement is macromolecule cholesteric liquid crystal；Described PVA material and macromolecule cholesteric liquid crystal mix
The mass ratio closed is 3:2.
Accompanying drawing explanation
The structural representation of a kind of Polarizer that Fig. 1 provides for the embodiment of the present invention；
The structural representation of the Polarizer using the first catoptric arrangement to make that Fig. 2 provides for the embodiment of the present invention；
The structural representation of the Polarizer using the second catoptric arrangement to make that Fig. 3 provides for the embodiment of the present invention；
The propagation signal that the first catoptric arrangement is applied to light after display device that Fig. 4 provides for the embodiment of the present invention
Figure；
The flow chart of steps of a kind of method making above-mentioned Polarizer that Fig. 5 embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention wholely, be not whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.
In accompanying drawing, each layer film thickness and region shape size do not reflect the actual proportions of Polarizer, and purpose is simply illustrated
Bright present invention.
A kind of Polarizer that the embodiment of the present invention provides, is on the basis of existing polarized light plate structure, carries out polarizing layer
Redesign and optimize, change the structure of existing polarizing layer, below its concrete structure is described in detail.
As it is shown in figure 1, the structural representation of a kind of Polarizer provided for the embodiment of the present invention；This Polarizer includes can
The polarizing layer 10 of reflection blue light；Polarizing layer 10 includes: PVA film 101, and is distributed in PVA film 101 and and PVA film
101 mutual exclusive catoptric arrangements 102；Wherein, catoptric arrangement 102 includes cholesteric liquid crystal 103, the row of cholesteric liquid crystal 103
Column direction is identical with the polarization direction of polarizing layer 10.
The Polarizer that the embodiment of the present invention provides, increases catoptric arrangement 102 in the PVA film 101 of polarizing layer 10, and makes
The orientation of the cholesteric liquid crystal 103 comprised in catoptric arrangement 102 is identical with the polarization direction a of polarizing layer 10, and then makes anti-
Penetrate structure 102 and can reflect blue light, when being applied in display device, can effectively reduce the blue light entering human eye, thus
Reach the effect of anti-blue light.
In the specific implementation, the polyvinyl alcohol (PVA) used in the embodiment of the present invention is a kind of polymer, non-liquid crystal phase,
Due to both non-compatibilities when mixing with catoptric arrangement, PVA film can be formed liquid crystal microcell, realize the performance of PVA simultaneously
Performance with liquid crystal.The anti-blue light Polarizer that the embodiment of the present invention provides, technique simply, easily realize, is applied to display device
Time middle, can effectively prevent the entrance that human eye is had short wavelength's blue light of injury, prevent the liquid crystal display injury to eyes, simultaneously
Intensity on HONGGUANG and green glow does not affect, does not increase the power consumption of display device.
In the specific implementation, cholesteric liquid crystal is due to the helicoidal structure of its uniqueness, under white light illumination, has selectivity
Reflection characteristic, and observe Bragg reflection law.When white light incidence, cholesteric liquid crystal meeting selective reflecting rotation direction is same
And wavelength meets the light of specific wavelength of Bragg reflection law, and the light of other wavelength all passes through.So at above-mentioned polarisation
After plate adds cholesteric liquid crystal, regulate n, Δ n and P by molecular structure, composition etc., so that the selectivity of cholesteric liquid crystal
Blue light in reflection particular range of wavelengths, and make its echo width cover this scope, make mixed light short-and-medium wavelength blue light all quilts
Reflect and cannot be introduced into human eye, reach the effect of anti-blue light.
Wherein, above-mentioned PVA film 101 can also be other for making the material of Polarizer in Polarizer, also may be used at this
Not limit.And above-mentioned catoptric arrangement 102 can be the structure that arbitrarily can reflect blue light, as long as mutual with PVA film 101
Incompatible.The structure of two kind feasible catoptric arrangements 102 is described below.
The first: catoptric arrangement includes cholesteric liquid crystal microcapsule.
As in figure 2 it is shown, the structure for the Polarizer using the making of the first catoptric arrangement of embodiment of the present invention offer is shown
It is intended to；It is also preferred that the left catoptric arrangement 102 includes: reflect the left-handed cholesteric liquid crystal microcapsule 1021 of left-handed blue light, and the reflection right side
The dextrorotation cholesteric liquid crystal microcapsule 1022 of rotation blue light.
In the specific implementation, it is by left-handed rotation and the characteristic of right-handed rotation superposition according to polarized light, in the embodiment of the present invention
Polarizing layer 10, adding in PVA film 101 can be with the micro-glue of left-handed cholesteric liquid crystal of selective reflecting left-handed specific wavelength blue light
Capsule 1021 and can be with the dextrorotation cholesteric liquid crystal microcapsule 1022 of selective reflecting phase co-wavelength, owing to being with cyst wall bag outside liquid crystal
Wrapping up in, the cholesteric liquid crystal of contrary rotation direction will not mix, thus gives PVA film total reflection performance, can make that human eye is had injury
Short wavelength's blue light occur total reflection and do not enter human eye, HONGGUANG and green intensity are not affected simultaneously, LED will not be increased
The power consumption of bar.
Further, in order to enable the blue light of the fully reflective a certain centre wavelength of Polarizer, it is also preferred that the left in catoptric arrangement
The molal quantity of left-handed cholesteric liquid crystal microcapsule is identical with the molal quantity of dextrorotation cholesteric liquid crystal microcapsule；Left-handed cholesteric liquid crystal
The centre wavelength of the dextrorotation blue light that the centre wavelength of the left-handed blue light of microcapsule reflection reflects with dextrorotation cholesteric liquid crystal microcapsule
Equal.
In the specific implementation, the catoptric arrangement including cholesteric liquid crystal microcapsule that the embodiment of the present invention provides, Ke Yitong
Overregulate ratio or the structure of mixture in microcapsule, regulate left-handed and dextrorotation cholesteric liquid crystal mixture selective reflecting
The centre wavelength of blue light, makes the left-handed and dextrorotation cholesteric liquid crystal mixture respectively can be with selective reflecting 450～470nm wavelength
Left-handed blue light and dextrorotation blue light, thus make the PVA film with total reflection shortwave blue light.
Concrete, the material of the mixture within cholesteric liquid crystal microcapsule, can select as required, preferably
, the inside packing material of left-handed cholesteric liquid crystal microcapsule is nematic liquid crystal and the mixture of left-handed chiral additives；Right
The inside packing material of rotation cholesteric liquid crystal microcapsule is nematic liquid crystal and the mixture of right-handed chirality additive.
As in figure 2 it is shown, owing to left-handed cholesteric liquid crystal mixture and dextrorotation cholesteric liquid crystal mixture are all by capsule wall bag
Wrap up in, thus left-handed cholesteric liquid crystal microcapsule 1021 and dextrorotation cholesteric liquid crystal microcapsule can be individually present in PVA film 101
1022。
In the specific implementation, the left-handed cholesteric liquid crystal used in the embodiment of the present invention can be nematic liquid crystal and left-handed
Chiral additives mixture, nematic liquid crystal can be SLC1717, and left-handed chiral additives can be CB15, S811, left-handed
Naphthalenediol derivant etc.；And dextrorotation cholesteric liquid crystal can be nematic liquid crystal and right-handed chirality additive agent mixture, nematic phase
Liquid crystal can be SLC1717, and right-handed chirality additive can be R811, dextrorotation Binaphthol derivant etc..
Wherein, for wrapping up the capsule wall of cholesteric liquid crystal mixture, difference can be chosen according to different manufacture methods
Material, it is also preferred that the left the cyst material of left-handed cholesteric liquid crystal microcapsule and dextrorotation cholesteric liquid crystal microcapsule is following arbitrary
One in material or combination: polymetylmethacrylate, gelatin, arabic gum, or Lauxite.
In the specific implementation, the embodiment of the present invention provides left-handed cholesteric liquid crystal microcapsule and dextrorotation cholesteric liquid crystal are micro-
The cyst material of capsule can but be not limited to above-mentioned different materials, it is also possible to choose other material as required, as long as
Can make microcapsule, and the function such as the transmittance not interfering with Polarizer.
Catoptric arrangement in the PVA film that the embodiment of the present invention provides, except including the left-handed blue light of above-mentioned reflection
Outside left-handed cholesteric liquid crystal microcapsule, and the dextrorotation cholesteric liquid crystal microcapsule of reflection dextrorotation blue light, it is also possible to be little molecule
Cholesteric liquid crystal mixture or macromolecule cholesteric liquid crystal, be introduced in detail below.
The second: catoptric arrangement is little molecule cholesteric liquid crystal mixture or macromolecule cholesteric liquid crystal.
As it is shown on figure 3, the structure for the Polarizer using the making of the second catoptric arrangement of embodiment of the present invention offer is shown
It is intended to；In figure, 103 represent little molecule cholesteric liquid crystal mixture or macromolecule cholesteric liquid crystal, and PVA material objectionable intermingling, because of
This can form liquid crystal microcell at PVA film shape.
In the specific implementation, the material of little molecule cholesteric liquid crystal mixture can be chosen as required, it is also preferred that the left
Little molecule cholesteric liquid crystal mixture is the mixture of nematic liquid crystal, chiral additives；Or, nematic liquid crystal, chirality are added
Agent, ultraviolet polymerisable monomer and the mixture of light trigger.
Such as, the little molecule cholesteric liquid crystal used in the embodiment of the present invention can be nematic liquid crystal and chiral additives
Mixture, nematic liquid crystal can be SLC1717, and chiral additives can be CB15, Binaphthol derivant etc..And the present invention
In embodiment use little molecule cholesteric liquid crystal can also be nematic liquid crystal, chiral additives, ultraviolet polymerisable monomer and
Photoinitiator mixtures, ultraviolet polymerisable monomer can be 2-methyl isophthalic acid, double (4-(the 6 '-propenyloxy group hexyloxy) benzoyl of 4-
Epoxide) benzene, light trigger can be benzoin dimethylether.
In the specific implementation, the material of macromolecule cholesteric liquid crystal can be chosen as required, it is also preferred that the left macromolecule
Cholesteric liquid crystal is siloxane chain liquid crystal polymer, or the cyclosiloxane tetramer.
Concrete, the embodiment of the present invention uses little molecule cholesteric liquid crystal mixture or macromolecule cholesteric liquid crystal, at PVA
Before film forming mixed uniformly, make when PVA drawing process simultaneously cholesteric liquid crystal formed planar orientation, produce selective reflecting
Performance, by regulation mixture ratio or structure, makes the cholesteric liquid crystal mixture can be with selective reflecting 450～470nm wavelength
Blue light, thus make the PVA film with selective reflecting specific wavelength blue light.
Based on same design, additionally providing a kind of display device in the embodiment of the present invention, this display device includes relatively setting
The array base palte put and opposite substrate, and be arranged on opposite substrate and deviate from the Polarizer of array base palte side；Polarizer is this
The above-mentioned Polarizer that inventive embodiments provides.Owing to this display device solves principle and the embodiment of the present invention one polarisation of problem
Plate is similar, and therefore the enforcement of this display device may refer to the enforcement of Polarizer, repeats no more in place of repetition.
As shown in Figure 4, for what the embodiment of the present invention provided, the first catoptric arrangement is applied to the biography of light after display device
Broadcast schematic diagram.Wherein 1-has a upper Polarizer of selective reflecting performance, 2-backlight, Polarizer under 3-, 4-lower glass substrate,
5-liquid crystal layer, 6-top glass substrate.This display device uses the blue light of 440～460nm to excite chip equally, does not reduce exciting effect
Rate, also comprises the blue light of this wave-length coverage in the white light that excitated fluorescent powder produces, white light is by light intensity after lower Polarizer, liquid crystal layer
Identical with regular display with the Wavelength distribution of light, when by upper Polarizer, owing to the PVA of upper Polarizer containing and can divide
Fan She the left-handed blue light of phase co-wavelength and the left-handed cholesteric liquid crystal microcapsule of dextrorotation blue light and the micro-glue of dextrorotation cholesteric liquid crystal
Capsule, the blue light of 450～470nm scopes can all be reflected, and make the light of other wavelength pass through by it, so that mixed light
Short-and-medium wavelength blue light is all reflected and be cannot be introduced into human eye, does not affect the intensity of other wave-length coverage light simultaneously.
Based on same design, a kind of above-mentioned Polarizer that embodiment of the present invention offer is provided that the embodiment of the present invention provides
Method, including the step of formation polarizing layer, as it is shown in figure 5, the step forming polarizing layer specifically includes:
Step 501, by the material mix homogeneously according to a certain percentage of PVA material and catoptric arrangement, forms PVA film；
Step 502, after the PVA film attached iodine of heat, the polarization direction along polarizing layer stretches, and formation can reflect blue light
Polarizing layer.
In the specific implementation, the method making above-mentioned Polarizer that the embodiment of the present invention provides, mainly it is improved by making
The method of polarizing layer, mixes the host material (PVA material) being used for making polarizing layer with the material of catoptric arrangement, is formed
PVA film；Then, after to the PVA film attached iodine of heat, when PVA carries out stretching its polarization characteristic of imparting, this tensile force acts on simultaneously
Cholesteric liquid crystal in PVA film, can make cholesteric liquid crystal planar orientation.
The Polarizer of different catoptric arrangement, the manufacture method difference that every kind of catoptric arrangement is corresponding is comprised for above two.
In the specific implementation, for the first catoptric arrangement, multiple method can be taked to make left-handed cholesteric liquid crystal micro-
Capsule and dextrorotation cholesteric liquid crystal microcapsule, it is also preferred that the left catoptric arrangement includes: left-handed cholesteric liquid crystal microcapsule and dextrorotation cholesteric
Phase liquid crystal microcapsule；By the material mix homogeneously according to a certain percentage of transparent medium and catoptric arrangement, before forming PVA film,
Also include: make left-handed cholesteric liquid crystal microcapsule and dextrorotation cholesteric liquid crystal by one or more methods in following method
Microcapsule: solvent evaporated method, complex coacervation and situ aggregation method.
Such as, the embodiment of the present invention can prepare cholesteric liquid crystal microcapsule, wherein microcapsule membrane by solvent evaporated method
Material can be polymetylmethacrylate, and surfactant can be PVA.
The most such as, the embodiment of the present invention can prepare cholesteric liquid crystal microcapsule, wherein microcapsule wall by complex coacervation
Material can be gelatin and arabic gum, and emulsifying agent can be polyvinylbenzenesulfonic acid sodium (PSS).
The most such as, the embodiment of the present invention can prepare cholesteric liquid crystal microcapsule, wherein capsule wall by situ aggregation method
Material can be Lauxite (U-F), and emulsifying agent can be arabic gum.
When making the polarizing layer comprising cholesteric liquid crystal microcapsule, it is also preferred that the left PVA material, left-handed cholesteric liquid crystal is micro-
The mass ratio of capsule and the mixing of dextrorotation cholesteric liquid crystal microcapsule is 3:1:1.
The left-handed cholesteric liquid crystal microcapsule and the dextrorotation cholesteric liquid crystal microcapsule that use in the embodiment of the present invention can be adopted
Make by the method for existing making liquid crystal microcapsule, do not limit at this.For example, it is possible to by nematic liquid crystal SLC1717, a left side
Rotation chiral additives ZLI-4571 is that 89.5%, 10.5% mix homogeneously makes dextrorotation cholesteric liquid crystal in mass ratio, this liquid crystal
Can left-handed rotation with selective reflecting wavelength as 455nm；By nematic liquid crystal SLC1717, right-handed chirality additive ZLI-4572
Being that 89.5%, 10.5% mix homogeneously makes left-handed cholesteric liquid crystal in mass ratio, this liquid crystal can be with selective reflecting wavelength
The left-handed rotation of 455nm；Said mixture uses situ aggregation method to make left-handed cholesteric liquid crystal microcapsule and dextrorotation cholesteric phase liquid
Brilliant microcapsule.
After producing left-handed cholesteric liquid crystal microcapsule and dextrorotation cholesteric liquid crystal microcapsule, by PVA material, left-handed cholesteric
Phase liquid crystal microcapsule and dextrorotation cholesteric liquid crystal microcapsule are 60%/20%/20% mix homogeneously in mass ratio, make PVA thin
Film.
In the specific implementation, for the second catoptric arrangement, the inclined of little molecule cholesteric liquid crystal mixture is comprised making
During photosphere, it is also preferred that the left catoptric arrangement is little molecule cholesteric liquid crystal mixture；PVA material and the mixing of little molecule cholesteric liquid crystal
The mass ratio of thing mixing is 7:3.
The little molecule cholesteric liquid crystal mixture used in the embodiment of the present invention can use different materials and mix
Composition and division in a proportion makes, and does not limits at this.Such as, heptylbiphenyl formic acid is joined by nematic liquid crystal SLC1717, chiral additives
Naphthalenediol ester, ultraviolet polymerisable monomer 2-methyl isophthalic acid, double (4-(the 6 '-propenyloxy group hexyloxy) benzoyloxy) benzene of 4-, light draw
Sending out agent benzoin dimethylether is 82%/7%/10%/1% mix homogeneously in mass ratio, the selective reflecting wavelength of this mixture
Blue light for 455nm.
After producing little molecule cholesteric liquid crystal mixture, PVA material and little molecule cholesteric liquid crystal mixture are pressed matter
Amount ratio is 70%/30% mix homogeneously, makes PVA film.
In the specific implementation, for comprising the polarizing layer of little molecule cholesteric liquid crystal mixture, in particular for little molecule
Cholesteric liquid crystal mixture comprises the mixture of ultraviolet polymerisable monomer.It is also preferred that the left by after the PVA film attached iodine of heat, along polarisation
After the polarization direction of layer stretches, before forming the polarizing layer that can reflect blue light, also include: by thin for the PVA after stretching
Film carries out ultraviolet light irradiation, makes the ultraviolet polymerisable monomer comprised in catoptric arrangement, the cholesteric phase comprised in fixation reflex structure
Liquid crystal planar alignment direction now.Will little molecule cholesteric liquid crystal mixture medium ultraviolet polymerisable monomer or hot polymerizable list
The fixing cholesteric liquid crystal now planar alignment of body polymerization, i.e. corresponding pitch, thus make have simultaneously selective reflecting performance and
The PVA film of polarizing properties.
In the specific implementation, for the second catoptric arrangement, when making the polarizing layer comprising macromolecule cholesteric liquid crystal,
It is also preferred that the left catoptric arrangement is macromolecule cholesteric liquid crystal；The mass ratio of PVA material and the mixing of macromolecule cholesteric liquid crystal is 3:2.
Such as, PVA material and side chain are contained the siloxane chain liquid crystal high score of cholesterol monomer and Binaphthol group
Son is 60%/40% mix homogeneously in mass ratio, makes PVA film, the selective reflecting wavelength of this macromolecule cholesteric liquid crystal
Blue light for 460nm.
In sum, the Polarizer in the present invention, the PVA film of polarizing layer increases catoptric arrangement, and makes reflection tie
The orientation of the cholesteric liquid crystal comprised in structure is identical with the polarization direction of polarizing layer, and then makes catoptric arrangement can reflect indigo plant
Light, when being applied in display device, can effectively reduce the blue light entering human eye, thus reach the effect of anti-blue light.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (15)
1. a Polarizer, it is characterised in that include the polarizing layer that can reflect blue light；Described polarizing layer includes: polyvinyl alcohol
PVA film, and be distributed in described PVA film and catoptric arrangement mutual exclusive with described PVA film；Wherein,
Described catoptric arrangement includes the polarization direction of cholesteric liquid crystal, the orientation of described cholesteric liquid crystal and described polarizing layer
Identical.
2. Polarizer as claimed in claim 1, it is characterised in that described catoptric arrangement includes: reflect the left-handed of left-handed blue light
Cholesteric liquid crystal microcapsule, and the dextrorotation cholesteric liquid crystal microcapsule of reflection dextrorotation blue light.
3. Polarizer as claimed in claim 2, the molal quantity of left-handed cholesteric liquid crystal microcapsule described in described catoptric arrangement
Identical with the molal quantity of described dextrorotation cholesteric liquid crystal microcapsule；
The centre wavelength of the left-handed blue light of described left-handed cholesteric liquid crystal microcapsule reflection and the described micro-glue of dextrorotation cholesteric liquid crystal
The centre wavelength of the dextrorotation blue light of capsule reflection is equal.
4. Polarizer as claimed in claim 2, it is characterised in that material is filled in the inside of described left-handed cholesteric liquid crystal microcapsule
Material is nematic liquid crystal and the mixture of left-handed chiral additives；
The inside packing material of described dextrorotation cholesteric liquid crystal microcapsule is nematic liquid crystal and the mixing of right-handed chirality additive
Thing.
5. Polarizer as claimed in claim 2, it is characterised in that described left-handed cholesteric liquid crystal microcapsule and described dextrorotation gallbladder
The cyst material of steroid phase liquid crystal microcapsule is the one in following any material or combination:
Polymetylmethacrylate, gelatin, arabic gum, or Lauxite.
6. Polarizer as claimed in claim 1, it is characterised in that described catoptric arrangement is little point of reflection specific wavelength blue light
Sub-cholesteric liquid crystal mixture or macromolecule cholesteric liquid crystal.
7. Polarizer as claimed in claim 5, it is characterised in that described little molecule cholesteric liquid crystal mixture is nematic phase liquid
Brilliant, the mixture of chiral additives；Or,
Nematic liquid crystal, chiral additives, ultraviolet polymerisable monomer and the mixture of light trigger.
8. Polarizer as claimed in claim 5, it is characterised in that described macromolecule cholesteric liquid crystal is siloxane chain liquid crystal
Macromolecule, or the cyclosiloxane tetramer.
9. a display device, it is characterised in that include array base palte and the opposite substrate being oppositely arranged, and be arranged on described
Opposite substrate deviates from the Polarizer of described array base palte side；Described Polarizer is polarisation as described in any one of claim 1-8
Plate.
10. making a method for Polarizer as described in any one of claim 1-9, including the step of formation polarizing layer, it is special
Levying and be, the step of described formation polarizing layer specifically includes:
By the material mix homogeneously according to a certain percentage of PVA material and catoptric arrangement, form PVA film；
After the described PVA film attached iodine of heat, the polarization direction along described polarizing layer stretches, and is formed and can reflect the inclined of blue light
Photosphere.
11. methods as claimed in claim 10, it is characterised in that described catoptric arrangement includes: the micro-glue of left-handed cholesteric liquid crystal
Capsule and dextrorotation cholesteric liquid crystal microcapsule；By the material mix homogeneously according to a certain percentage of transparent medium and catoptric arrangement, formed
Before PVA film, also include:
Make left-handed cholesteric liquid crystal microcapsule by one or more methods in following method and dextrorotation cholesteric liquid crystal is micro-
Capsule:
Solvent evaporated method, complex coacervation and situ aggregation method.
12. methods as claimed in claim 11, it is characterised in that described PVA material, described left-handed cholesteric liquid crystal microcapsule
It is 3:1:1 with the mass ratio of described dextrorotation cholesteric liquid crystal microcapsule mixing.
13. methods as claimed in claim 10, it is characterised in that described catoptric arrangement is the mixing of little molecule cholesteric liquid crystal
Thing；The mass ratio of described PVA material and the mixing of little molecule cholesteric liquid crystal mixture is 7:3.
14. methods as claimed in claim 10, it is characterised in that after the described PVA film attached iodine of heat, along described polarizing layer
After polarization direction stretches, before forming the polarizing layer that can reflect blue light, also include:
PVA film after stretching is carried out ultraviolet light irradiation, makes the ultraviolet polymerisable monomer comprised in catoptric arrangement, fixing described
The cholesteric liquid crystal comprised in catoptric arrangement planar alignment direction now.
15. methods as claimed in claim 10, it is characterised in that described catoptric arrangement is macromolecule cholesteric liquid crystal；Described
The mass ratio of PVA material and the mixing of macromolecule cholesteric liquid crystal is 3:2.
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