CN108628050A - Adjustable liquid crystal light polarizing film and preparation method thereof - Google Patents
Adjustable liquid crystal light polarizing film and preparation method thereof Download PDFInfo
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- CN108628050A CN108628050A CN201810428007.1A CN201810428007A CN108628050A CN 108628050 A CN108628050 A CN 108628050A CN 201810428007 A CN201810428007 A CN 201810428007A CN 108628050 A CN108628050 A CN 108628050A
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- polarizing film
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
Abstract
The present invention discloses a kind of adjustable liquid crystal light polarizing film and preparation method thereof, wherein adjustable liquid crystal light polarizing film includes the first cholesteric crystal film set gradually, the first base layer, liquid crystal layer, the second base layer and the second cholesteric crystal film；First base layer includes the first transparent base and the first transparency conducting layer positioned at first transparent base towards the liquid crystal layer side；Second base layer includes the second transparent base and the second transparency conducting layer positioned at second transparent base towards the liquid crystal layer side；The first cholesteric crystal film and the second cholesteric crystal film are multilayer cholesteric crystal film.Technical solution of the present invention can improve adjustable liquid crystal light polarizing film translucent effect.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of adjustable liquid crystal light polarizing film and preparation method thereof.
Background technology
Polaroid is made of the polarization theory according to light, can effectively eliminate dazzle, can be used in light modulation glass
On glass, the angle by changing two polaroids adjusts the light got in, and plays certain heat insulation, but due to
The special nature of polaroid, other than price height, light can be predominantly absorbed 50% or so during use, make the saturating state of dimming glass
Effect is restricted, and transmitance is poor and heat-proof quality is low, therefore its extensive use is subject to certain restrictions.
Invention content
The main object of the present invention is to provide a kind of adjustable liquid crystal light polarizing film, it is intended to which replacing existing liquid crystal light modulation film makes
With, have the effect of preferable translucent effect and adjust temperature.
To achieve the above object, adjustable liquid crystal light polarizing film proposed by the present invention includes the first cholesteric liquid set gradually
Brilliant film, the first base layer, liquid crystal layer, the second base layer and the second cholesteric crystal film；
First base layer includes the first transparent base and is located at first transparent base towards the liquid crystal layer
First transparency conducting layer of side；Second base layer is including the second transparent base and is located at second transparent base court
To the second transparency conducting layer of the liquid crystal layer side；
The first cholesteric crystal film and the second cholesteric crystal film are that multilayer cholesteric crystal is thin
Film；
The multilayer cholesteric crystal film includes the first transparent bearing bed and the second transparent bearing bed being oppositely arranged,
And it is successively set on red cholesteryl liquid crystal layer, green courage between the described first transparent bearing bed and the second transparent bearing bed
Sterol liquid crystal layer, blue cholesteryl liquid crystal layer；
The blue cholesteryl liquid crystal layer includes cholesteryl liquid crystal and the adjustment reflection of reflection blue wave band light
The cholesteryl liquid crystal of blue wave band light to corresponding screw pitch the first chiral agent；
The green cholesteryl liquid crystal layer includes cholesteryl liquid crystal and the adjustment reflection of reflection green wave band light
The cholesteryl liquid crystal of green band light to corresponding screw pitch the second chiral agent；
The red cholesteryl liquid crystal layer includes cholesteryl liquid crystal and the adjustment reflection of reflection red band light
The cholesteryl liquid crystal of red band light to corresponding screw pitch third chiral agent.
Preferably, the adjustable liquid crystal light polarizing film further includes the first laminating layer and the second laminating layer；First fitting
Layer is set between the first cholesteric crystal film and first base layer；Second laminating layer is set to described
Between second cholesteric crystal film and second base layer.
Preferably, the liquid crystal layer includes liquid crystal and elastic microsphere, and the liquid crystal is twisted nematic liquid crystals, and described the
One base layer further includes the first alignment layer for being set to the first transparency conducting layer towards the liquid crystal layer side, second matrix
Layer further includes the second orientation layer for being set to the second transparency conducting layer towards the liquid crystal layer side.
Preferably, the reflection bandwidth degree of the first cholesteric crystal film and the second cholesteric crystal film is
200nm-400nm。
Preferably, the multilayer cholesteric crystal film further includes the first adhesive layer, the second adhesive layer, third adhesive layer
And the 4th adhesive layer；First adhesive layer setting the described first transparent bearing bed and the red cholesteryl liquid crystal layer it
Between, the second adhesive layer setting is between the red cholesteryl liquid crystal layer of institute and the green cholesteryl liquid crystal layer, the third
Adhesive layer setting is between the green cholesteryl liquid crystal layer and the blue cholesteryl liquid crystal layer, the 4th adhesive layer setting
Between the blue cholesteryl liquid crystal layer and the second transparent bearing bed.
Preferably, the multilayer cholesteric crystal film further includes that the first preventing ultraviolet coating and the second preventing ultraviolet apply
Layer；The table backwards to the red cholesteryl liquid crystal layer in the described first transparent bearing bed is arranged in the first preventing ultraviolet coating
The table backwards to the blue cholesteryl liquid crystal layer in the described second transparent bearing bed is arranged in face, the second preventing ultraviolet coating
Face.
Preferably, first transparency conducting layer and the second transparency conducting layer are tin indium oxide, conducting high polymers object
Or the conductive film layer or grid that metal is formed.
The present invention also proposes a kind of preparation method of adjustable liquid crystal light polarizing film, the preparation method packet for liquid crystal light polarizing film that this is adjustable
Include following steps：
Two raw material films with transparent base and transparency conducting layer are provided；
The raw material film, and the filling mixing comprising liquid crystal and elastic microsphere among two raw material films is unfolded in tiling
Adjustable liquid crystal light polarizing film semi-finished product are made in object；
Prepare two multilayer cholesteric crystal films；
Two multilayer cholesteric crystal film tilings are being fitted in the adjustable liquid crystal light polarizing film semi-finished product just
Anti- two surfaces, are made adjustable liquid crystal light polarizing film；
In two multilayer cholesteric crystal films Steps of the preparation, multilayer cholesterine is prepared especially by following steps
Type liquid crystal film：
Two transparent base raw material films are provided；
Tiling one transparent base raw material film of expansion, and it is coated with macromolecule successively on the transparent base raw material film
Prepolymer and the first mixture, are made the first film crude green body；
By the first film crude green body ultraviolet curing；
It is coated with macromolecule prepolymer and the second mixture successively on the thick embryo of the first layer film after hardening, is made
Two film crude green bodies；
By the second film crude green body ultraviolet curing；
It is coated with macromolecule prepolymer and the second mixture successively on the thick embryo of the second layer film after hardening, is made
Three film crude green bodies；
By the third film crude green body ultraviolet curing；
It is coated with high score polymer on the thick embryo of third layer film after hardening, the 4th film crude green body is made；
Another Zhang Suoshu transparent bases raw material film is unfolded, is fitted on the 4th film crude green body, it is solid to carry out ultraviolet light
Change, it is thin that multilayer cholesteric crystal is made；
Wherein, first mixture includes the cholesteryl liquid crystal and the adjustment reflection indigo plant of reflection blue wave band light
The cholesteryl liquid crystal of color wave band light to corresponding screw pitch the first chiral agent；Second mixture includes reflection green band of light
The cholesteryl liquid crystal of the cholesteryl liquid crystal of line and the adjustment reflection green wave band light to corresponding screw pitch the second chiral agent；
The third mixture includes the cholesteryl liquid crystal and the adjustment reflection red band light for reflecting red band light
Cholesteryl liquid crystal to corresponding screw pitch third chiral agent.
Preferably, described that two multilayer cholesteric crystal film tilings are fitted in the adjustable liquid crystal light polarizing film
Positive and negative two surfaces of semi-finished product, the step of adjustable liquid crystal light polarizing film is made, specifically include：
Two multilayer cholesteric crystal films are placed between two horizontal positioned squeeze-film rollers；
The adjustable liquid crystal light polarizing film semi-finished product are aligned with two multilayer cholesteric crystal film edges, are bonded
Between two multilayer cholesteric crystal films；
Control the adjustable liquid crystal light polarizing film semi-finished product pressure opposite with two multilayer cholesteric crystal films
Film rubber roller moves, using the squeeze-film roller to the adjustable liquid crystal light polarizing film semi-finished product and two multilayer cholesteric liquid
Brilliant film pressure, adjustable liquid crystal light polarizing film smooth and in homogeneous thickness is made.
Preferably, the liquid crystal is twisted nematic liquid crystals；
The tiling is unfolded the raw material film, and filling mixed comprising liquid crystal and elastic microsphere among two raw material films
Further include before the step of closing object, adjustable liquid crystal light polarizing film semi-finished product are made：
It is respectively coated polyimide coating on the transparency conducting layer of two raw material films, to the polyimide coating
Solidification and rubbing are carried out, to be respectively formed transparent oriented layer on the transparency conducting layer of two raw material films.
The first base layer is provided with the first transparent base as first inside protective layer protection in technical solution of the present invention
Transparency conducting layer, the set-up mode and function of the second base layer are similar with the first base layer, and the first transparency conducting layer and second is thoroughly
Liquid crystal layer is equipped between bright conductive layer, the first transparency conducting layer and the second transparency conducting layer can form electric field after being powered so that liquid
Liquid crystal rotation in crystal layer realizes dimming function to adjust the transparency of entire adjustable liquid crystal light polarizing film.Wherein, the first courage
Sterol type liquid crystal film and the second cholesteric crystal film are multilayer cholesteric crystal film, have three layers of cholesterine liquid
Crystal layer, each layer of cholesteryl liquid crystal layer adjusts the screw pitch of corresponding cholesteryl liquid crystal using different chiral agents, so that three layers
Cholesteryl liquid crystal layer reflects red band light, green band light and blue wave band light respectively.Due to cholesteryl liquid crystal
With circle polarization light separation function, helical axis direction of rotation is consistent with circle polarization direction, has reflection characteristic, reflection wavelength
For the consistent circle polarization light of the spiral distance between axles of liquid crystal.According to this selection reflection characteristic, multilayer cholesteric crystal film
By only being detached to the specific round polarization light of the natural light of certain wave band, reflection residual light carries out three layers of cholesteryl liquid crystal layer
It recycles, it is possible thereby to be used as efficient polarization light film, makes the adjustable liquid crystal light polarizing film transmitance higher of state, reach better
Translucent effect, mist degree further increases when can also make to dissipate color state, while three layers of cholesteryl liquid crystal layer can also absorb difference respectively
The light of wave band absorbs luminous energy, plays heat insulation.
Description of the drawings
Fig. 1 is the structural schematic diagram of adjustable one embodiment of liquid crystal light polarizing film of the present invention；
Fig. 2 is that the structure of an embodiment of multilayer cholesteric crystal film in adjustable liquid crystal light polarizing film shown in FIG. 1 is shown
It is intended to；
Fig. 3 is the structure of another embodiment of multilayer cholesteric crystal film in adjustable liquid crystal light polarizing film shown in FIG. 1
Schematic diagram；
Fig. 4 is the flow chart of one embodiment of preparation method of the adjustable liquid crystal light polarizing film of the present invention；
Fig. 5 is preparation multilayer cholesteric liquid in the one embodiment step S3 of preparation method of the adjustable liquid crystal light polarizing film of the present invention
The flow chart of brilliant film；
Fig. 6 be the adjustable liquid crystal light polarizing film of the present invention one embodiment of preparation method in step S2 refined flow chart；
Fig. 7 be the adjustable liquid crystal light polarizing film of the present invention one embodiment of preparation method in step S4 refined flow chart.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...),
Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in the picture) between each component,
Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, it is somebody's turn to do " first ", " second " etc.
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.In addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, when the knot that conflicting or cannot achieve when will be understood that this technical solution occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection domain within.
The present invention proposes a kind of adjustable liquid crystal light polarizing film.
It please refers to Fig.1 and Fig. 2, in embodiments of the present invention, liquid crystal light polarizing film that this is adjustable includes the first courage set gradually
Sterol type liquid crystal film 100, the first base layer 200, liquid crystal layer 300, the second base layer 400 and the second cholesteric crystal film
500；
First base layer 200 includes the first transparent base 210 and is located at first transparent base 210 towards institute
State the first transparency conducting layer 220 of 300 side of liquid crystal layer；Second base layer 400 includes the second transparent base 410 and position
In second transparent base 410 towards the second transparency conducting layer 420 of 300 side of the liquid crystal layer；
The first cholesteric crystal film 100 and the second cholesteric crystal film 500 are multilayer cholesteric
Liquid crystal film；
The multilayer cholesteric crystal film includes the first transparent bearing bed 110 being oppositely arranged and the second transparent carrying
Layer 120, and the red cholesterine that is successively set between the described first transparent bearing bed 110 and the second transparent bearing bed 120
Liquid crystal layer 130, green cholesteryl liquid crystal layer 140, blue cholesteryl liquid crystal layer 150；
150 cholesteryl liquid crystal comprising reflection blue wave band light of blue cholesteryl liquid crystal layer and adjustment are described anti-
The cholesteryl liquid crystal of blue wave band light is penetrated to the first chiral agent of corresponding screw pitch；
140 cholesteryl liquid crystal comprising reflection green wave band light of green cholesteryl liquid crystal layer and adjustment are described anti-
The cholesteryl liquid crystal of green band light is penetrated to the second chiral agent of corresponding screw pitch；
130 cholesteryl liquid crystal comprising reflection red band light of the red cholesteryl liquid crystal layer and adjustment are described anti-
The cholesteryl liquid crystal of red band light is penetrated to the third chiral agent of corresponding screw pitch.
It is internal as protective layer protection to be provided with the first transparent base 210 for the first base layer 200 in technical solution of the present invention
The first transparency conducting layer 220, the set-up mode and function of the second base layer 400 are similar with the first base layer 200, and first is transparent
Liquid crystal layer 300, the first transparency conducting layer 220 and the second electrically conducting transparent are equipped between conductive layer 220 and the second transparency conducting layer 420
Layer 420 can form electric field after being powered so that the liquid crystal rotation in liquid crystal layer 300, to adjust entire adjustable liquid crystal light polarizing film
Transparency realizes dimming function.Wherein, the first cholesteric crystal film 100 and the second cholesteric crystal film 500 are more
There are layer cholesteric crystal film three layers of cholesteryl liquid crystal layer, each layer of cholesteryl liquid crystal layer to use different chiral agents
The screw pitch of corresponding cholesteryl liquid crystal is adjusted, so that three layers of cholesteryl liquid crystal layer reflect red band light, green wave respectively
Section light and blue wave band light.Since cholesteryl liquid crystal has a circle polarization light separation function, helical axis direction of rotation with
Circle polarization direction is consistent, and it is the consistent circle polarization light of the spiral distance between axles of liquid crystal to have reflection characteristic, reflection wavelength.According to this
Kind selection reflection characteristic, three layers of cholesteryl liquid crystal layer of multilayer cholesteric crystal film pass through only to the natural light of certain wave band
Specific round polarization light detached, reflection residual light recycled, it is possible thereby to be used as efficient polarization light film, make state
Adjustable liquid crystal light polarizing film transmitance higher, reach better translucent effect, can also make dissipate color state when mist degree further increase,
Three layers of cholesteryl liquid crystal layer can also absorb the light of different-waveband respectively simultaneously, absorb luminous energy, play heat insulation.
Wherein, the first transparent base 210 and the second transparent base 410 are used to protect internal conductive layer and liquid crystal layer 300；
In some embodiments, first transparent base 210 and second transparent base 410 are PET (poly terephthalic acid second two
Alcohol ester) film, PC (makrolon) plates or glass plate.When it is flexible membrane to need the adjustable liquid crystal light polarizing film, could be provided as
PET film.If necessary to the adjustable liquid crystal light polarizing film be nonbreakable glass state when, then first transparent base 210 can be set
With the second hard transparent plate made of glass or transparent plastic of transparent base 410, the at this time entirety of the adjustable liquid crystal light polarizing film
Intensity is higher, good reliability, the influence that can effectively avoid external pressing belt from.The liquid crystal layer 300 include liquid crystal 302 and
Elastic microsphere 303.Elastic microsphere 303 can adjust the thickness of entire liquid crystal layer 300, and 302 molecule of liquid crystal is distributed to liquid crystal layer 300
In.In the present embodiment, the liquid crystal 302 is twisted nematic liquid crystals (TN liquid crystal) 302, at this time first base layer 200
Further include the first alignment layer 230 for being set to the first transparency conducting layer 220 towards 300 side of the liquid crystal layer, second base
Body layer 400 further includes the second orientation layer 430 for being set to the second transparency conducting layer 420 towards the liquid crystal layer side, first
The reaction of TN liquid crystal 302 is very fast under the action of oriented layer 230 and second orientation layer 430, and when power up with it is not powered when
It waits nematic crystal 302 and is in different states, by the transparent performance that can change light modulation film whether power-up.Specifically, liquid
Brilliant 302 molecules are under the action of external voltage, the first stable state with light transmission, and adjustable liquid crystal light polarizing film is visually in height at this time
Pellucidity；When external voltage disappears, and 302 molecule of the liquid crystal is in the second stable state, it is incident to 302 molecule of the liquid crystal too
The sunlight overwhelming majority is reflected and is scattered, and only sub-fraction light is through the first base layer 200 and the second base layer 400 and liquid
Brilliant 302 molecules transmission is come in, and adjustable liquid crystal light polarizing film is visually in high fog state at this time.First transparency conducting layer 220
It is the conductive film layer or grid that tin indium oxide, conducting high polymers object or metal are formed with the second transparency conducting layer 420.First
One of transparency conducting layer 220 and the second transparency conducting layer 420 are as driving electrodes (emission electrode), and another one is as reception
Electrode；So that consistent electric field is formed between the first transparency conducting layer 220 and the second transparency conducting layer 420, for driving liquid
Brilliant change state.When the first transparency conducting layer 220 and the second transparency conducting layer 420 are latticed, in this way, the first electrically conducting transparent
The position for the intersection that layer 220 and the second transparency conducting layer 420 project forms an independent control point, can targetedly control
The mesomorphic state of every bit.Adjustable liquid crystal light polarizing film further includes controller (not shown), and the first transparency conducting layer 220 and second is saturating
Bright conductive layer 420 is electrically connected with control circuit, and controller controls the first transparency conducting layer 220 and the second transparency conducting layer 420
Electric field status.
In order to ensure that the first cholesteric crystal film 100 and the second cholesteric crystal film 500 can be more stable
Reliable to attach, in some embodiments, the adjustable liquid crystal light polarizing film further includes the first laminating layer (not shown) and second
Laminating layer (not shown)；First laminating layer is set to the first cholesteric crystal film 100 and first matrix
Between layer 200；Second laminating layer is set to the second cholesteric crystal film 500 and second base layer 400
Between.Wherein, first laminating layer and the second laminating layer can be two-sided OCA glue-lines, acrylic glue-line or AB glue layer.
In order to reach better optical property, the first cholesteric crystal film 100 and the second cholesteric can be set
The reflection bandwidth degree of alcohol type liquid crystal film 500 is 200nm-400nm, and is set as reflecting left-handed and dextrorotation visible light respectively, is made
Adjustable liquid crystal light polarizing film achievees the purpose that high ground fog thoroughly.Wherein, the described first transparent bearing bed 110 and the second transparent bearing bed
120 be the transparent plastic films such as PET film or PC films, preferably the material with insulative effectiveness, can also improve adjustable liquid in this way
The heat resistance of brilliant light polarizing film.
In order to improve the reliability of multilayer cholesteric crystal film, in the present embodiment, the red cholesteryl liquid crystal
Layer 130, the green cholesteryl liquid crystal layer 140 and the blue cholesteryl liquid crystal layer 150 include the height as adhesive
Molecularly Imprinted Polymer.High molecular polymer is bonded adjacent functional layer as adhesive, ensures to fit closely between each layer.
In order to improve the reliability of multilayer cholesteric crystal film, referring to Fig. 3, in another embodiment, the multilayer
Cholesteric crystal film further includes the first adhesive layer 111, the second adhesive layer 131, third adhesive layer 141 and the 4th adhesive layer
151；First adhesive layer 111 setting the described first transparent bearing bed 110 and the red cholesteryl liquid crystal layer 130 it
Between, second adhesive layer 131 is arranged between the red cholesteryl liquid crystal layer 130 of institute and the green cholesteryl liquid crystal layer 140,
The third adhesive layer 141 is arranged between the green cholesteryl liquid crystal layer 140 and the blue cholesteryl liquid crystal layer 150,
4th adhesive layer 151 setting is between the blue cholesteryl liquid crystal layer 150 and the second transparent bearing bed 120.The
One adhesive layer 111, the second adhesive layer 131, third adhesive layer 141 and the 4th adhesive layer 151 are bonded adjacent as adhesive
Functional layer ensures to fit closely between each layer.
In order to reach better optical property, the red cholesteryl liquid crystal layer 130, the green cholesterine can be set
Liquid crystal layer 140 and the blue cholesteryl liquid crystal layer 150 are mutually parallel.Three-decker arranges more neat, cholesteryl liquid crystal film
Reflecting properties are stronger, and optical property is better.
In order to reach better ageing-resistant performance, it further includes first anti-that the multilayer cholesteric crystal film, which can be arranged,
Ultraviolet light coating (not shown) and the second preventing ultraviolet coating (not shown)；First preventing ultraviolet coating setting is described the
One transparent bearing bed 110 is arranged backwards to the surface of the red cholesteryl liquid crystal layer 130, the second preventing ultraviolet coating in institute
The second transparent bearing bed 120 is stated backwards to the surface of the blue cholesteryl liquid crystal layer 150.Pass through the first preventing ultraviolet coating and
The ultraviolet light for being mapped to adjustable liquid crystal light polarizing film can be isolated in two preventing ultraviolet coatings, to improve the longevity of adjustable liquid crystal light polarizing film
Life.
Fig. 4 and Fig. 5 are please referred to, and is understood that the present invention also proposes a kind of adjustable liquid crystal light polarizing film in conjunction with Fig. 1 and Fig. 3
Preparation method, the preparation method for liquid crystal light polarizing film that this is adjustable includes the following steps：
S1 provides two raw material films with transparent base and transparency conducting layer；
The positive and negative surface of two raw material films is respectively transparent base and transparency conducting layer, and two raw material films are used to form adjustable
The first base layer 200 and the second base layer 400 of liquid crystal light polarizing film.
S2, tiling are unfolded the raw material film, and filling mixed comprising liquid crystal and elastic microsphere among two raw material films
Object is closed, adjustable liquid crystal light polarizing film semi-finished product are made；
When tiling, need to ensure that the transparency conducting layer of two raw material films is oppositely arranged, by liquid crystal 302 and elastic microsphere
303 pour among two transparency conducting layers.
Adjustable liquid crystal light polarizing film semi-finished product can be wound after the completion of this step, so that subsequent step uses.
S3 prepares two multilayer cholesteric crystal films.
It please be referring to Fig. 4, in the present embodiment, step S3 be specifically included：
S301 provides two transparent base raw material films.
Transparent base raw material film is PET film or PC films, and it is transparent that two transparent base raw material films are for respectively forming first
Bearing bed 110 and the second transparent bearing bed 120.
S302, tiling one transparent base raw material film of expansion, and be coated with successively on the transparent base raw material film
Macromolecule prepolymer and the first mixture, are made the first film crude green body.
Wherein, first mixture includes the cholesteryl liquid crystal of reflection blue wave band light, the adjustment reflection blue
The cholesteryl liquid crystal of wave band light to corresponding screw pitch the first chiral agent.
S303, by the first film crude green body ultraviolet curing.
After solidification, the first mixture coating is used to form the blue cholesteryl liquid crystal layer 150, is coated in step S302
Macromolecule prepolymer ultimately forms the 4th adhesive layer 151 of multilayer cholesteric crystal film in previous embodiment, ensures blue
It is fitted closely between cholesteryl liquid crystal layer 150 and transparent base raw material film.
S304 is coated with macromolecule prepolymer and the second mixture on the thick embryo of the first layer film after hardening successively,
The second film crude green body is made.
Wherein, second mixture include reflection green wave band light cholesteryl liquid crystal and adjustment it is described reflection it is green
The cholesteryl liquid crystal of color wave band light to corresponding screw pitch the second chiral agent.
S305, by the second film crude green body ultraviolet curing.
After solidification, the second mixture coating is used to form green cholesteryl liquid crystal layer 140, the macromolecule being coated in step S4
Prepolymer ultimately forms the third adhesive layer 141 of multilayer cholesteric crystal film in previous embodiment, ensures green cholesterine
It is fitted closely between the first film crude green body after liquid crystal layer 140 and solidification.
S306 is coated with macromolecule prepolymer and the second mixture on the thick embryo of the second layer film after hardening successively,
Third film crude green body is made；
Wherein, the third mixture include reflect red band light cholesteryl liquid crystal and adjustment it is described reflection it is red
The cholesteryl liquid crystal of color wave band light to corresponding screw pitch third chiral agent.
S307, by the third film crude green body ultraviolet curing；
After solidification, third mixture coating is used to form red cholesteryl liquid crystal layer 130, the macromolecule being coated in step S6
Prepolymer ultimately forms the second adhesive layer 131 of multilayer cholesteric crystal film in previous embodiment, ensures red cholesterine
It is fitted closely between the second film crude green body after liquid crystal layer 130 and solidification.
S308 is coated with high score polymer on the thick embryo of third layer film after hardening, the 4th film crude green body is made；
Another Zhang Suoshu transparent bases raw material film is unfolded, is fitted on the 4th film crude green body by S309, carries out ultraviolet
Line cures, and it is thin that multilayer cholesteric crystal is made；
After solidification, the macromolecule prepolymer being coated in step S8 ultimately forms multilayer cholesteric crystal in previous embodiment
First adhesive layer 111 of film ensures to fit closely between another transparent base raw material film and third film crude green body.
In order to adapt to the needs of sizes product, can further include after step S309：
Step S310 cuts the multilayer cholesteric crystal film, is cleaned, edge sealing, and after the drying
Winding.
In order to reach preferable Painting effect, functional layer in homogeneous thickness is formed, in some embodiments, step S302 can
To specifically include：
It is coated with macromolecule prepolymer on the transparent base raw material film and forms the first prepolymer coating；
The transparent base raw material film for being coated with the first prepolymer coating is placed in the anilox roll of jockey pulley and control thickness
Between, first mixture is placed in material trough, the transparent base raw material film is controlled and is moved towards the jockey pulley, profit
The transparent base raw material film for being coated with the first prepolymer coating and first mixture coating are applied with the jockey pulley
Pressure, so that the first mixture coating is uniformly and smooth.
Similarly, in some embodiments, step S304 can be specifically included：The thick embryo of the second layer film after hardening
Upper coating macromolecule prepolymer forms third prepolymer coating；
It is coated with the thick embryo of the second layer film after the solidification of the third prepolymer coating and is placed in jockey pulley and control thickness
Among the anilox roll of degree；
The third mixture is placed in material trough, the thick embryo of the second layer film after control solidification is relatively described
Jockey pulley move, using the jockey pulley to after solidification the thick embryo of second layer film and the third mixture coating apply
Pressure, so that third mixture coating is uniformly and smooth.
Step S306 can be specifically included：Macromolecule prepolymer shape is coated on the thick embryo of the second layer film after hardening
At third prepolymer coating；
It is coated with the thick embryo of the second layer film after the solidification of the third prepolymer coating and is placed in jockey pulley and control thickness
Among the anilox roll of degree；
The third mixture is placed in material trough, the thick embryo of the second layer film after control solidification is relatively described
Jockey pulley move, using the jockey pulley to after solidification the thick embryo of second layer film and the third mixture coating apply
Pressure, so that third mixture coating is uniformly and smooth.
It is coated using the anilox roll of jockey pulley and control thickness, the layering between two coatings may be implemented, simultaneously
The thickness that every layer of mixture coating can also accurately be controlled achievees the effect that red that is uniform and smooth, while can obtaining
It may be implemented to be mutually parallel between cholesteryl liquid crystal layer 130, green cholesteryl liquid crystal layer 140 and blue cholesteryl liquid crystal layer 150.
Realize that the concrete operations of step S2 have very much, referring to Fig. 6, in the present embodiment, step S2 is specifically included：
Two raw material films are placed between two horizontal positioned squeeze-film rollers so that the raw material of top by S21
The lower surface of film is transparency conducting layer, and the upper surface of the raw material film of lower section is transparent conductive film；
At this point, the setting direction of two raw material films has corresponded to the setting side of the first base layer 200 and the second base layer 400
To.Two squeeze-film roller direction of rotation on the contrary, two raw material films along squeeze-film roller rotation be redirected back into two squeeze-film rollers it
Between gap.
The mixture is vertically dropped to the upper surface of the underlying raw material film by S22；
Before the gap between entering squeeze-film roller, mixture is vertically dripped using discharging gate to the underlying original
The upper surface for expecting film, can form uniform mixture coating.
S23, the relatively described squeeze-film roller movement of two raw material films of control, described in the squeeze-film roller pair two
Raw material film and between mixture press, be made even uniform adjustable liquid crystal light polarizing film semi-finished product；
The pressure of squeeze-film roller can by adjust both gap size be adjusted, two raw material films and it
Between gap of the mixture across two squeeze-film rollers so that the thickness of adjustable liquid crystal light polarizing film semi-finished product is evenly；It is positive and negative
Two surfaces are all uniformly squeezed so that mixture is further uniformly distributed so that adjustable liquid crystal light polarizing film semi-finished product are more
It is smooth.
It is twisted nematic liquid crystals by being specifically chosen the liquid crystal in this present embodiment, therefore before the step S2 also
Including：
S5 is respectively coated polyimide coating, to the polyimide on the transparency conducting layer of two raw material films
Coating carries out solidification and rubbing, to be respectively formed transparent oriented layer on the transparency conducting layer of two raw material films.
Oriented layer enables to TN liquid crystal when not powered with certain angle of inclination, thus can when powering up and rotating
Faster response.
Realize that the concrete operations of step S4 have very much, referring to Fig. 7, in the present embodiment, step S4 is specifically included：
Two multilayer cholesteric crystal films are placed between two horizontal positioned squeeze-film rollers by S41；
Two squeeze-film roller direction of rotation are on the contrary, two multilayer cholesteric crystal films are reversed along squeeze-film roller rotation
Gap between two squeeze-film rollers.
The adjustable liquid crystal light polarizing film semi-finished product are aligned by S42 with two multilayer cholesteric crystal film edges,
It is fitted between two multilayer cholesteric crystal films；
Pass through alignment operation, it is ensured that it is inclined that multilayer cholesteric crystal film more neatly accurately fits to adjustable liquid crystal
On light film semi-finished product.
S43 controls adjustable liquid crystal light polarizing film semi-finished product institute opposite with two multilayer cholesteric crystal films
Squeeze-film roller movement is stated, using the squeeze-film roller to the adjustable liquid crystal light polarizing film semi-finished product and two multilayer cholesterine
Type liquid crystal film presses, the adjustable liquid crystal light polarizing film of even uniform is made；
The pressure of squeeze-film roller can be adjusted by adjusting the gap size of the two, adjustable liquid crystal light polarizing film semi-finished product
With gap of two multilayer cholesteric crystal films across two squeeze-film rollers, positive and negative two surfaces are all by uniform
It squeezes so that two multilayer cholesteric crystal films fit closely simultaneously to be uniformly distributed so that adjustable liquid crystal light polarizing film is more
It is smooth.
In order to which the adjustable liquid crystal light polarizing film of suitable size is made, can also include before step S3：
S6 measures the adjustable liquid crystal light polarizing film semi-finished product；The adjustable liquid crystal light polarizing film semi-finished product are cut, clearly
It is clean, make electrode and carry out edge sealing.
By cutting, cleaning, electrode is made, the adjustable liquid crystal light polarizing film of suitable size can be made, by carrying out edge
Sealing operates the stability that may further ensure that adjustable liquid crystal light polarizing film.
It should be noted that the technical solution of each embodiment of the present invention can be combined with each other, but must be with this
The technical staff in field can be implemented as basis, when the combination of technical solution occur it is conflicting or when cannot achieve should people recognize
Combination for this technical solution is not present, also not the present invention claims protection domain within.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every utilization
Equivalent structure transformation made by description of the invention and accompanying drawing content is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of adjustable liquid crystal light polarizing film, which is characterized in that including the first cholesteric crystal film, the first base set gradually
Body layer, liquid crystal layer, the second base layer and the second cholesteric crystal film；
First base layer includes the first transparent base and is located at first transparent base towards the liquid crystal layer side
The first transparency conducting layer；Second base layer includes the second transparent base and is located at second transparent base towards institute
State the second transparency conducting layer of liquid crystal layer side；
The first cholesteric crystal film and the second cholesteric crystal film are multilayer cholesteric crystal film；
The multilayer cholesteric crystal film includes the first transparent bearing bed and the second transparent bearing bed being oppositely arranged, and
Red cholesteryl liquid crystal layer, the green cholesterine being successively set between the described first transparent bearing bed and the second transparent bearing bed
Liquid crystal layer, blue cholesteryl liquid crystal layer；
The blue cholesteryl liquid crystal layer includes the cholesteryl liquid crystal and the adjustment reflection blue of reflection blue wave band light
The cholesteryl liquid crystal of wave band light to corresponding screw pitch the first chiral agent；
The green cholesteryl liquid crystal layer includes the cholesteryl liquid crystal and the adjustment reflection green of reflection green wave band light
The cholesteryl liquid crystal of wave band light to corresponding screw pitch the second chiral agent；
The red cholesteryl liquid crystal layer includes the cholesteryl liquid crystal and the adjustment reflection red of reflection red band light
The cholesteryl liquid crystal of wave band light to corresponding screw pitch third chiral agent.
2. adjustable liquid crystal light polarizing film as described in claim 1, which is characterized in that further include the first laminating layer and the second fitting
Layer；First laminating layer is set between the first cholesteric crystal film and first base layer；Described second
Laminating layer is set between the second cholesteric crystal film and second base layer.
3. adjustable liquid crystal light polarizing film as claimed in claim 2, which is characterized in that the liquid crystal layer includes that liquid crystal and elasticity are micro-
Ball, the liquid crystal are twisted nematic liquid crystals, and first base layer further includes being set to the first transparency conducting layer described in
The first alignment layer of liquid crystal layer side, second base layer further include being set to the second transparency conducting layer towards the liquid crystal layer
The second orientation layer of side.
4. adjustable liquid crystal light polarizing film as described in claim 1, which is characterized in that the first cholesteric crystal film and the
The reflection bandwidth degree of two cholesteric crystal films is 200nm-400nm.
5. adjustable liquid crystal light polarizing film as described in claim 1, which is characterized in that the multilayer cholesteric crystal film also wraps
Include the first adhesive layer, the second adhesive layer, third adhesive layer and the 4th adhesive layer；First adhesive layer is arranged described first
Between transparent bearing bed and the red cholesteryl liquid crystal layer, the second adhesive layer setting in the red cholesteryl liquid crystal layer of institute and
Between the green cholesteryl liquid crystal layer, the third adhesive layer setting is in the green cholesteryl liquid crystal layer and the blue courage
Between sterol liquid crystal layer, the 4th adhesive layer setting the blue cholesteryl liquid crystal layer and the described second transparent bearing bed it
Between.
6. adjustable liquid crystal light polarizing film as described in claim 1, which is characterized in that the multilayer cholesteric crystal film also wraps
Include the first preventing ultraviolet coating and the second preventing ultraviolet coating；First preventing ultraviolet coating setting transparent is held described first
Carrier layer is arranged backwards to the surface of the red cholesteryl liquid crystal layer, the second preventing ultraviolet coating in the described second transparent carrying
Layer is backwards to the surface of the blue cholesteryl liquid crystal layer.
7. adjustable liquid crystal light polarizing film as described in claim 1, which is characterized in that first transparency conducting layer and second transparent
Conductive layer is the conductive film layer or grid that tin indium oxide, conducting high polymers object or metal are formed.
8. a kind of preparation method of adjustable liquid crystal light polarizing film as described in claim 1, which is characterized in that include the following steps：
Two raw material films with transparent base and transparency conducting layer are provided；
The raw material film, and the filling mixture comprising liquid crystal and elastic microsphere among two raw material films, system is unfolded in tiling
At adjustable liquid crystal light polarizing film semi-finished product；
Prepare two multilayer cholesteric crystal films；
Two multilayer cholesteric crystal film tilings are fitted in positive and negative the two of the adjustable liquid crystal light polarizing film semi-finished product
Adjustable liquid crystal light polarizing film is made in a surface；
In two multilayer cholesteric crystal films Steps of the preparation, multilayer cholesteric liquid is prepared especially by following steps
Brilliant film：
Two transparent base raw material films are provided；
Tiling one transparent base raw material film of expansion, and it is coated with macromolecule pre-polymerization successively on the transparent base raw material film
Object and the first mixture, are made the first film crude green body；
By the first film crude green body ultraviolet curing；
It is coated with macromolecule prepolymer and the second mixture successively on the thick embryo of the first layer film after hardening, it is thin to be made second
Film crude green body；
By the second film crude green body ultraviolet curing；
It is coated with macromolecule prepolymer and the second mixture successively on the thick embryo of the second layer film after hardening, it is thin that third is made
Film crude green body；
By the third film crude green body ultraviolet curing；
It is coated with high score polymer on the thick embryo of third layer film after hardening, the 4th film crude green body is made；
Another Zhang Suoshu transparent bases raw material film is unfolded, is fitted on the 4th film crude green body, ultraviolet curing, system are carried out
It is thin at multilayer cholesteric crystal；
Wherein, first mixture includes the cholesteryl liquid crystal and the adjustment reflection blue wave of reflection blue wave band light
Section light cholesteryl liquid crystal to corresponding screw pitch the first chiral agent；Second mixture includes reflection green wave band light
The cholesteryl liquid crystal of cholesteryl liquid crystal and the adjustment reflection green wave band light to corresponding screw pitch the second chiral agent；It is described
Third mixture includes the cholesteric of the cholesteryl liquid crystal and the adjustment reflection red band light that reflect red band light
Alcohol liquid crystal to corresponding screw pitch third chiral agent.
9. the preparation method of adjustable liquid crystal light polarizing film as claimed in claim 8, which is characterized in that
It is described that two multilayer cholesteric crystal film tilings are being fitted in the adjustable liquid crystal light polarizing film semi-finished product just
Anti- two surfaces, the step of adjustable liquid crystal light polarizing film is made, specifically include：
Two multilayer cholesteric crystal films are placed between two horizontal positioned squeeze-film rollers；
The adjustable liquid crystal light polarizing film semi-finished product are aligned with two multilayer cholesteric crystal film edges, are fitted in two
Between Zhang Suoshu multilayer cholesteric crystal films；
Control the adjustable liquid crystal light polarizing film semi-finished product press mold glue opposite with two multilayer cholesteric crystal films
Roller moves, thin to the adjustable liquid crystal light polarizing film semi-finished product and two multilayer cholesteric crystals using the squeeze-film roller
Film presses, adjustable liquid crystal light polarizing film smooth and in homogeneous thickness is made.
10. the preparation method of adjustable liquid crystal light polarizing film as claimed in claim 9, which is characterized in that
The liquid crystal is twisted nematic liquid crystals；
The raw material film, and the filling mixing comprising liquid crystal and elastic microsphere among two raw material films is unfolded in the tiling
Object further includes before the step of adjustable liquid crystal light polarizing film semi-finished product are made：
It is respectively coated polyimide coating on the transparency conducting layer of two raw material films, the polyimide coating is carried out
Solidification and rubbing, to be respectively formed transparent oriented layer on the transparency conducting layer of two raw material films.
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| CN113260907A (en) * | 2019-02-01 | 2021-08-13 | 深圳市柔宇科技股份有限公司 | Liquid crystal film |
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