CN110333619A - A kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate - Google Patents
A kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate Download PDFInfo
- Publication number
- CN110333619A CN110333619A CN201910382068.3A CN201910382068A CN110333619A CN 110333619 A CN110333619 A CN 110333619A CN 201910382068 A CN201910382068 A CN 201910382068A CN 110333619 A CN110333619 A CN 110333619A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- transparent conductive
- conductive substrate
- macromolecule
- pedot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Dispersion Chemistry (AREA)
- Geometry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate, belongs to liquid crystal light modulation technical field.The polymer dispersed liquid crystal film, including polymer dispersed liquid crystal layer, first transparent PET layer and the first PEDOT conductive layer constitute the first PET-PEDOT conductive base, second transparent PET layer and the 2nd PEDOT conductive layer constitute the 2nd PET-PEDOT conductive base, polymer dispersed liquid crystal layer forms sandwich structure between the first and second PET-PEDOT conductive bases.The PET-PEDOT conductive base is the surface that PEDOT dispersion liquid is configured to PET base material by roller coating, then through macromolecule transparent conductive film made of high temperature oven heat drying, compared with traditional PET-ITO conductive base, PET-PEDOT conductive base making technology is simple, production cost is low, is provided simultaneously with ideal optically and electrically parameter.
Description
Technical field
The present invention relates to liquid crystal light modulation technical fields, and in particular to a kind of polymer based on macromolecule transparent conductive substrate
Dispersed liquid crystal film and its manufacturing method.
Background technique
Polymer dispersed liquid crystal film is otherwise known as pdlc film, intelligent light modulation film, intelligent fenestrated membrane etc., is by PDLC material and thoroughly
A kind of novel film material that bright compliant conductive substrate is obtained by modes such as coating roll-ins.Wherein PDLC material is then by liquid crystal
Composition is mixed with UV prepolymer, under certain condition aggregated reaction, is formed micron-sized liquid crystal droplet and is uniformly dispersed
In macromolecule network, the dielectric anisotropy of liquid crystal molecule is recycled to obtain the material with electro-optic response characteristic, it is main
Work is between scattering states and transparent state, and it is in unordered shape that in the case where no applied voltage, the arrangement of liquid crystal droplet optical axis is random
Mist state is presented in state, film；In the case where applying voltage, liquid crystal droplet optical axis vertical thin-film surface alignment is in order state, thin
Transparent state is presented in film.Liquid crystal molecule imparts the significant electro-optical characteristic of polymer dispersed liquid crystal film, it is made to receive extensive pass
Note, and have broad application prospects.For conventional display device, polymer dispersion type liquid crystal display device has very much
Advantage, such as polarizer and oriented layer are not needed, preparation process is simple, can be easily made large area flexible display etc., PDLC material
Material can be fabricated to light modulation film or dimming glass, by the induction to light and heat, adjust room temperature under voltage driving, reach section
Can environmental protection purpose, this technology electronic-control dimming glass, Projection Display, in terms of be widely applied.
Transparent flexible conductive base used in polymer dispersed liquid crystal film is made currently on the market mainly with poly- terephthaldehyde
The advantages of acetoacetic ester (PET) does tin indium oxide (ITO) film of substrate, abbreviation PET-ITO film, this conductive base is stability
Good, light transmittance height, sheet resistance are low, manufacture craft maturation etc., and the disadvantage is that ITO conductive material is needed by vacuum magnetic control sputtering process
It can be just uniformly distributed in pet sheet face, equipment investment is high with operating cost, and the scarcity of indium metal itself, leads to market in addition
Upper PET-ITO film price can not have always been high any more, this has raised the market price of polymer dispersed liquid crystal film in turn, strongly limit
Its application field, in consideration of it, it is existing to substitute to develop a kind of novel transparent flexible conductive base that can be used for pdlc film
PET-ITO substrate is necessary.
Inside all multi-parameters of pdlc film, the parameter of most critical is the ON state mist degree of diaphragm, this performance directly determines
The permeability of naked eyes perception and the size of visible angle under diaphragm energized state, contrast test discovery, at present finished product on the market
In pdlc film piece, the ON state mist degree of high transmittance film is also 4% or more, the still inclined mist of naked eyes perception, therefore further decreases diaphragm
ON state mist degree is also most important.
Summary of the invention
To solve above-mentioned problem of the prior art, the present invention provides a kind of polymer based on macromolecule transparent conductive substrate
Dispersed liquid crystal film and its manufacturing method make diaphragm have lower ON state mist degree and the higher operating temperature upper limit.
In order to reach the goals above, the present invention takes following technical scheme: a kind of based on macromolecule transparent conductive substrate
Polymer dispersed liquid crystal film, including the first flexible and transparent substrate, the second flexible and transparent substrate, the first macromolecule transparency conducting layer and
It is transparent that second macromolecule transparency conducting layer, the first flexible and transparent substrate and the first macromolecule transparency conducting layer constitute the first macromolecule
Conductive base, the second flexible and transparent substrate and the second macromolecule transparency conducting layer constitute the second macromolecule transparent conductive substrate, the
Polymer dispersed liquid crystal layer, the first high score are accompanied between one macromolecule transparent conductive substrate and the second macromolecule transparent conductive substrate
Sub- transparent conductive substrate and the second macromolecule transparent conductive substrate are respectively formed first electrode and by way of dislocation lap joint
Two electrodes, first electrode and second electrode are connected to the both ends of power supply.
Preferably, the first flexible and transparent substrate and the second flexible and transparent substrate with a thickness of 50 μm, 100 μm, 125 μ
M, 188 μm any.
Preferably, the polymer dispersed liquid crystal layer with a thickness of 10 μm, 15 μm, 20 μm, 25 μm, 30 μm any.
Preferably, the power supply that the first electrode and second electrode are connected is AC or DC power, is most preferably exchanged
Power supply, power supply wave shape are sine wave or square wave, most preferably square wave, supply voltage according to different demands select voltage for 36V, 48V,
60V, 110V are any.
The present invention also provides a kind of polymer dispersed liquid crystal film manufacturing methods based on macromolecule transparent conductive substrate, including
Following steps:
(1) preparation of macromolecule transparent conductive substrate:
1. to quality solubility be 1% poly- 3,4- diethoxy thiophene and polystyrolsulfon acid (PEDOT:PSS) it is water-soluble
The isopropanol of liquid 10~30 weight percent of addition is as conductive auxiliary agent and dispersing agent, at room temperature, stirring 30~
60min obtains PEDOT solution after mixing evenly, wherein the weight ratio of PEDOT and PSS is 1:2.5；
2. above-mentioned PEDOT solution is uniformly configured to a kind of one side of non-transparent flexible substrate, it finally will be molten configured with PEDOT
The non-transparent flexible substrate of liquid is heating and curing to obtain PEDOT transparent conductive substrate；
(2) preparation of the polymer dispersed liquid crystal film of above-mentioned PEDOT transparent conductive substrate:
30~50% liquid-crystal composition of weight percent, 50~70%UV prepolymer and 1 ‰~5 ‰ spacer particles are mixed
PDLC mixed liquor uniformly is obtained, then this PDLC mixed liquor is configured at above-mentioned first PEDOT transparent conductive substrate and the 2nd PEDOT
Between transparent conductive substrate, liquid crystal film is formed by roll-in, this liquid crystal film is finally put into ultra-violet curing case progress UV and is consolidated
Change forms polymer dispersed liquid crystal film.
Preferably, the mass percent of the isopropanol addition is 20, and the form of stirring is that magnetic agitation or machinery stir
It mixes, most preferably mechanical stirring.
Preferably, the non-transparent flexible substrate be polyethylene terephthalate (PET), polyethylene naphthalate (PEN),
Any one of polyimides (PI), polycarbonate (PC).
Preferably, the non-transparent flexible substrate be polyethylene terephthalate (PET), PET base with a thickness of 50 μm,
100 μm, 125 μm, 188 μm any；
It is preferred: using PET as the curing process of the PEDOT solution of non-transparent flexible substrate: being configured in non-transparent flexible substrate
The method of PEDOT solution is any one of spraying, blade coating, spin coating, silk-screen printing, roll-to-roll coating, and it is best for scratching；It is described
The temperature being heating and curing is 130 DEG C, heating time 30min.
Preferably, the liquid-crystal composition is grouped as by the group of following weight percent: 30~70% cyanobiphenyls, and 10
~30% fluoro or chloro cyanobiphenyl and 10~30% cyano terphenyls；
Wherein, the structure of cyanobiphenyl is as follows:
Wherein, R is the alkyl or alkoxy that carbon atom number is 1~10；
The structure of fluoro or chloro cyanobiphenyl is as follows:
Wherein, R is the alkyl or alkoxy that carbon atom number is 1-10, X1-X4H atom replaced by F or Cl；
The structure of cyano terphenyl is as follows:
Wherein, R is the alkyl or alkoxy that carbon atom number is 1~10.
Preferably, the UV prepolymer the preparation method comprises the following steps: under the conditions of yellow light, by polyacrylic resin, acrylic acid list
Body and photoinitiator are according to 10~50% polyacrylic resin of weight percent, 50~90% acrylic monomers and 0.5~5% light
Initiator mixing, continues 30~60min under room temperature and mechanical agitation, is then transferred to vacuum defoaming device, persistently takes off
Steep 60~90min, after gained UV prepolymer colorless and transparent state and bubble-free is presented.
Preferably, the polyacrylic resin is urethane acrylate, epoxy acrylate, polyester acrylate, gathers
Any one of ether acrylate, unsaturated polyester (UP)；The acrylic monomers is iso-bornyl acrylate, tripropylene glycol dipropyl
Olefin(e) acid ester, 1,4 butanediol diacrylate, 1,6- glycol diacrylate, 0-phenyl phenoxyethyl acrylate, methyl
Lauryl alcohol ester, 4- hydroxybutyl acrylate, hydroxyethyl methacrylate, lauric acid acrylate, tetrahydrofuran
One of acrylate, ethoxyethoxyethyl acrylate, two contracting trimethylolpropane tetra-acrylates and a variety of；Institute
Stating photoinitiator is 2- phenyl benzyl -2- dimethyl amine -1- (4- morpholine benzyl phenyl) butanone, methyl benzoylformate, 2- hydroxyl -
4 '-(2- hydroxy ethoxies), -2- methyl phenyl ketone, 2- hydroxy-methyl phenyl-propane -1- ketone, 2,4,6- trimethylbenzoyl -
One kind of diphenyl phosphate oxidation and a variety of.
Preferably, the effect of the spacer particle is the thickness and uniformity for controlling polymer dispersed liquid crystal layer, passes through choosing
With the spacer particle of the different-grain diameter then thickness of adjustable polymer dispersed liquid crystal layer and optically and electrically parameter, partial size model
Enclose 10~30 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm be it is best, glass or plastic material, plastic material are best.
Preferably, the configuration PDLC mixed liquor is in the first PEDOT transparent conductive substrate and the 2nd PEDOT electrically conducting transparent
Method between substrate is one of spraying, blade coating, spin coating, roller coating, slot coated and silk-screen printing, and slot coated is most
It is good.
Preferably, the UV curing schedule, 10~60mW/cm of UV light wave segment limit 300~350nm, UV luminous intensity2, UV
The optional UV-LED array light source of 60~300S of curing time, UV light source and UV fluorescent tube, preferably UV-LED light source.
Preferably, the preparation method of the polymer dispersed liquid crystal film of above-mentioned PEDOT transparent conductive substrate mainly includes as follows
Step: 30~50% liquid-crystal composition of weight percent, 50~70%UV prepolymer and 1 ‰~5 ‰ spacer particles are passed through into machine
The mode of tool stirring or magnetic agitation is uniformly mixed, and removes bubble under vacuum conditions, finally obtained PDLC mixed liquor
For clear liquid and bubble-free, this PDLC mixed liquor is coated on to the first PEDOT is transparent to be led by way of slot coated
Between electric substrate and the 2nd PEDOT transparent conductive substrate, liquid crystal film is formed by roll-in, is then put into this liquid crystal film
In the UV-LED lamp box of 300~350nm wavelength band, in 10~60mW/cm2Illumination intensity range under continue irradiation 60~
300S finally obtains the polymer dispersed liquid crystal film.
Compared with prior art, the beneficial effects of the present invention are:
1) it can accordingly make to obtain different-thickness index by using the non-transparent flexible substrate of different-thickness index
Pdlc film piece, and then widened its application field and scene；Thickness indication by controlling polymer dispersed liquid crystal layer can be
The photoelectric parameter feature of regulation pdlc film piece in a certain range, to meet different use demands；
2) it can be effectively reduced and lead in PEDOT:PSS aqueous solution using isopropanol as conductive auxiliary agent and dispersing agent addition
The high molecular surface impedance of electricity, promotes conductivity, and since isopropanol belongs to polar solvent, dissolves each other with PEDOT:PSS aqueous solution
Property is good, and it is a kind of ideal dispersing agent that boiling point is relatively low (< 100 DEG C), and the process that is heating and curing only needs relatively low temperature i.e.
It can be completely removed, avoid the excessively high basement membrane curling of temperature or carbonization, since solidification process does not have dissolvent residual, film surface is transparent
Degree is high, therefore the present invention is suitable for the production low-impedance conductive base of the high grade of transparency；
3) liquid-crystal composition of the invention optical anisotropy with higher is conducive to promote polymer dispersed liquid crystal film
The mist degree of OFF state, that is, OFF state shielding, while reducing the mist degree and transparency of ON state；Fluoro or chloro cyanobiphenyl have larger
Dielectric anisotropy advantageously reduces liquid crystal film driving voltage；And cyano terphenyl clearing point with higher, (Cp > 100
DEG C), be conducive to the maximum working temperature for improving liquid crystal film；
4) at 100~500cps/25 DEG C, on the one hand lower range of viscosities guarantees UV prepolymer viscosity range of the invention
UV prepolymer and liquid-crystal composition intersolubility with higher, on the other hand but also UV prepolymer is mixed with liquid-crystal composition
The PDLC mixed liquor formed afterwards has better mobility and superior coating performance；
5) polymer dispersed liquid crystal film of PEDOT transparent conductive substrate of the invention, operating temperature (> 80 with higher
℃)；With lower ON state mist degree (< 3%) and lower driving voltage (36V)；With preferable weather resistance, on-off electrical measurement
Trying number is more than 5,000,000 times.
Detailed description of the invention
In order to illustrate the embodiments of the present invention more clearly or technical solution in the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of invention to those skilled in the art, can also be according to this under the premise of not staying alone creative work
A little attached drawings obtain other attached drawings.
Fig. 1 is the structural diagram of the present invention；
Wherein, the first flexible and transparent substrate 1, the second flexible and transparent substrate 2, the first macromolecule transparency conducting layer 3, second are high
Molecule transparency conducting layer 4, the first macromolecule transparent conductive substrate 5, the second macromolecule transparent conductive substrate 6, polymer dispersion liquid
Crystal layer 7, first electrode 8, second electrode 9.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
A kind of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate as shown in Figure 1:, including the first flexibility is thoroughly
Bright substrate (1), the second flexible and transparent substrate (2), the first macromolecule transparency conducting layer (3) and the second macromolecule transparency conducting layer
(4), the first flexible and transparent substrate (1) and the first macromolecule transparency conducting layer (3) constitute the first macromolecule transparent conductive substrate
(5), the second flexible and transparent substrate (2) and the second macromolecule transparency conducting layer (4) constitute the second macromolecule transparent conductive substrate
(6), polymer dispersion liquid is accompanied between the first macromolecule transparent conductive substrate (5) and the second macromolecule transparent conductive substrate (6)
The side that crystal layer (7), the first macromolecule transparent conductive substrate (5) and the second macromolecule transparent conductive substrate (6) pass through dislocation lap joint
Formula is respectively formed first electrode (8) and second electrode (9), and first electrode (8) and second electrode (9) are connected to the two of power supply
End.
Preferably, the first flexible and transparent substrate and the second flexible and transparent substrate with a thickness of 50 μm, 100 μm, 125 μ
M, 188 μm any.
Preferably, the polymer dispersed liquid crystal layer with a thickness of 10 μm, 15 μm, 20 μm, 25 μm, 30 μm any.
Preferably, the power supply that the first electrode and second electrode are connected is AC or DC power, is most preferably exchanged
Power supply, power supply wave shape are sine wave or square wave, most preferably square wave, supply voltage according to different demands select voltage for 36V, 48V,
60V, 110V are any.
Embodiment 1
20g isopropanol: being added the PEDOT:PSS aqueous solution (PEDOT is 1:2.5 with PSS weight ratio) of 1wt% by step A,
Mechanical stirring 40min at room temperature is uniformly mixed, obtains PEDOT solution, above-mentioned PEDOT solution is coated in a manner of scratching
On polyethylene terephthalate (PET) substrate (188 μm of thickness) of 21cm*30cm size, it is coated with two altogether, controls wet-film thickness
Film after above-mentioned two coatings is put into 130 DEG C of solidification 30min of baking oven, obtains PEDOT conductive film, be denoted as 1- by 300nm
A1,1-A2, test PEDOT conduction film parameters: 80 ohm of sheet resistance, all fronts transmitance 86.5%, mist degree 0.27%；
Under step B: being protected from light or yellow light environment, by urethane acrylate (3000~4000cps/25 DEG C of range of viscosities)
26% (mass percent, similarly hereinafter), isobornyl acrylate 30%, hy-droxybutyl 30%, hydroxyethyl methacrylate
8%, ethoxyethoxyethyl acrylate 5%, methyl benzoylformate 1% mix in proportion, mechanical stirring 40min, so
After be transferred to vacuum defoaming device, continue deaeration 60min, after gained UV prepolymer colorless and transparent state is presented and without gas
Bubble, is denoted as 1-B, and 350cps/25 DEG C of tested viscosity；
Step C: cyanobiphenyl 50%, fluoro cyanobiphenyl 30%, cyano terphenyl 20% are mixed in proportion, machinery stirs
It mixes after mixing, is heated to 100 DEG C, the colorless and transparent state of mixture is cooled to after room temperature that milky is obtained by filtration is uniform
Mixed liquor, i.e. liquid-crystal composition, are denoted as 1-C；
Step D: by the above-mentioned UV prepolymer 1-B weight percent 60% being prepared, liquid-crystal composition 1-C weight percent
It is mixed in proportion than 40%, mechanical stirring 60min, is stirring evenly and then adding into 3 ‰ 20 μm of spacer particles, continue to stir 60min, it is complete
Mixed liquor is transferred to vacuum defoaming device after finishing, continues deaeration 60min, after gained PDLC solution present it is colorless and transparent
State and bubble-free, are denoted as 1-D；
Step E: the PDLC solution 1-C that upper step is prepared is pressed from both sides into the two panels PEDOT conductive film being prepared in step
In 1-A1 and 1-A2, roll-in forms liquid crystal film, this liquid crystal film is put into UV-LED lamp box, UV illumination intensity 50mW/cm2,
Wavelength 325nm, irradiation time 120S, after obtain pdlc film finished product, be denoted as 1-E, production electrode and test parameter: power-off
Full light transmittance Toff%=68.70%, mist degree Hoff%=92.50% under (0V)；Full light transmittance under energization (36V)
Ton%=81.50%, mist degree Hon=1.89%.
Using the commodity PET-ITO film for cutting two panels 21cm*30cm size, 188 μm of thickness, this PET-ITO conduction is tested
Film parameters: 95 ohm of sheet resistance, all fronts transmitance 82.5%, the group as a comparison of mist degree 0.90% implements above-mentioned steps B-E, finally
Prepared pdlc film parameter: full light transmittance Toff%=65.20%, mist degree Hoff%=92.48% under power-off (0V)；
Be powered under (36V) light transmittance Ton%=78.80%, mist degree Hon=3.46% entirely.
Embodiment 2
The production method of step A:PEDOT conductive film is identical as step A in embodiment 1, wherein the substrate selected is used instead
Size 21cm*30cm, 100 μm of thickness of PET film piece, makes two panels altogether, is denoted as 2-A1,2-A2, test PEDOT conductive film ginseng
Number: 81 ohm of sheet resistance, all fronts transmitance 85.8%, mist degree 0.25%；
Under step B: being protected from light or yellow light environment, by urethane acrylate (2000~3000cps/25 DEG C of range of viscosities)
20% (mass percent, similarly hereinafter), epoxy acrylate 6% (6000~8000cps/25 DEG C of range of viscosities), trihydroxy methyl third
Alkane triacrylate 30%, 1,6 hexanediol diacrylate 30%, hydroxyethyl methacrylate 8%, acryloyl morpholine 5%,
2,4,6- trimethylbenzoy-dipheny phosphorous oxides 1% mix in proportion, mechanical stirring 40min, and it is de- to be then transferred to vacuum
Bulb apparatus continues deaeration 60min, after gained UV prepolymer colorless and transparent state and bubble-free is presented, be denoted as 2-B, test
380cps/25 DEG C of viscosity；
Step C: cyanobiphenyl 45%, fluoro cyanobiphenyl 45%, cyano terphenyl 10% are mixed in proportion, machinery stirs
It mixes after mixing, is heated to 100 DEG C, the colorless and transparent state of mixture is cooled to after room temperature that milky is obtained by filtration is uniform
Mixed liquor, i.e. liquid-crystal composition, are denoted as 2-C；
Step D: by the above-mentioned UV prepolymer 2-B weight percent 50% being prepared, liquid-crystal composition 2-C weight percent
It is mixed in proportion than 50%, mechanical stirring 60min, is stirring evenly and then adding into 3 ‰ 15 μm of spacer particles, continue to stir 60min, it is complete
Mixed liquor is transferred to vacuum defoaming device after finishing, continues deaeration 60min, after gained PDLC solution present it is colorless and transparent
State and bubble-free, are denoted as 2-D；
Step E: the PDLC solution 2-C that upper step is prepared is pressed from both sides into the two panels PEDOT conductive film being prepared in step
In 2-A1 and 2-A2, roll-in forms liquid crystal film, this liquid crystal film is put into UV-LED lamp box, UV illumination intensity 50mW/cm2,
Wavelength 325nm, irradiation time 120S, after obtain pdlc film finished product, production electrode and test parameter, full light under power-off (0V)
Penetrance Toff%=66.27%, mist degree Hoff%=92.30%；Be powered under (36V) light transmittance Ton%=entirely
80.53%, mist degree Hon=2.53%.
Using the commodity PET-ITO film for cutting two panels 21cm*30cm size, 100 μm of thickness, this PET-ITO conduction is tested
Film parameters: 90 ohm of sheet resistance, all fronts transmitance 83.7%, the group as a comparison of mist degree 0.75% implements above-mentioned steps B-E, finally
Prepared pdlc film parameter: full light transmittance Toff%=64.80%, mist degree Hoff%=92.26% under power-off (0V)；
Be powered under (36V) light transmittance Ton%=79.14%, mist degree Hon=3.77% entirely.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate, it is characterised in that: flexible saturating including first
Bright substrate, the second flexible and transparent substrate, the first macromolecule transparency conducting layer and the second macromolecule transparency conducting layer, first is flexible saturating
Bright substrate and the first macromolecule transparency conducting layer constitute the first macromolecule transparent conductive substrate, the second flexible and transparent substrate and second
Macromolecule transparency conducting layer constitutes the second macromolecule transparent conductive substrate, the first macromolecule transparent conductive substrate and the second macromolecule
Accompany polymer dispersed liquid crystal layer between transparent conductive substrate, the first macromolecule transparent conductive substrate and the second macromolecule is transparent leads
Electric substrate is respectively formed first electrode and second electrode by way of dislocation lap joint, and first electrode and second electrode are separately connected
At the both ends of power supply.
2. a kind of manufacturing method of the polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate, includes the following steps:
(1) preparation of macromolecule transparent conductive substrate:
1. adding to quality solubility for 1% poly- 3,4- diethoxy thiophene and the aqueous solution of polystyrolsulfon acid (PEDOT:PSS)
Add the isopropanol of 10~30 weight percent as conductive auxiliary agent and dispersing agent, at room temperature, stirs 30~60min, stir
After mixing uniformly, PEDOT solution is obtained, wherein the weight ratio of PEDOT and PSS is 1:2.5；
2. above-mentioned PEDOT solution to be uniformly configured to a kind of one side of non-transparent flexible substrate, it will finally be configured with PEDOT solution
Non-transparent flexible substrate is heating and curing to obtain PEDOT transparent conductive substrate；
(2) preparation of the polymer dispersed liquid crystal film of above-mentioned PEDOT transparent conductive substrate:
1. the preparation of liquid-crystal composition: by 30~70% cyanobiphenyl of weight percent, 10~30% fluoro or chloro cyano
Biphenyl and 10~30% cyano terphenyls mix in proportion, and mechanical stirring after mixing, is heated to 100 DEG C, mixture is in nothing
The uniform mixed liquor of milky, i.e. liquid-crystal composition is obtained by filtration after being cooled to room temperature in color pellucidity；
Wherein, the structure of cyanobiphenyl is as follows:
Wherein, R is the alkyl or alkoxy that carbon atom number is 1~10；
The structure of fluoro or chloro cyanobiphenyl is as follows:
Wherein, R is the alkyl or alkoxy that carbon atom number is 1-10, X1-X4H atom replaced by F or Cl；
The structure of cyano terphenyl is as follows:
Wherein, R is the alkyl or alkoxy that carbon atom number is 1~10；
2. the preparation of UV prepolymer: under the conditions of yellow light, by polyacrylic resin, acrylic monomers and photoinitiator according to weight
10~50% polyacrylic resin of percentage, 50~90% acrylic monomers and the mixing of 0.5~5% photoinitiator, in room temperature and
Continue 30~60min under mechanical agitation, be then transferred to vacuum defoaming device, continue 60~90min of deaeration, after institute
It obtains UV prepolymer and colorless and transparent state and bubble-free is presented；
30~50% liquid-crystal composition of weight percent, 50~70%UV prepolymer and 1 ‰~5 ‰ spacer particles are uniformly mixed
PDLC mixed liquor is obtained, then this PDLC mixed liquor is configured at above-mentioned first PEDOT transparent conductive substrate and the 2nd PEDOT is transparent
Between conductive base, method is any one of spraying, blade coating, spin coating, roller coating, slot coated and silk-screen printing, slot coated
Be best, then by roll-in formed liquid crystal film, finally by this liquid crystal film be put into ultra-violet curing case carry out UV be formed by curing it is poly-
Close object dispersed liquid crystal film.
3. a kind of manufacturer of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate according to claim 2
Method, it is characterised in that: the mass percent of the addition of isopropanol described in step (1) is 20, the form of stirring be magnetic agitation or
Person's mechanical stirring, most preferably mechanical stirring.
4. a kind of manufacturer of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate according to claim 2
Method, it is characterised in that: non-transparent flexible substrate described in step (1) is polyethylene terephthalate (PET), poly- naphthalenedicarboxylic acid second two
Any one of ester (PEN), polyimides (PI), polycarbonate (PC).
5. a kind of manufacturer of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate according to claim 4
Method, it is characterised in that: non-transparent flexible substrate described in step (1) is polyethylene terephthalate (PET), the thickness of PET base
For 50 μm, 100 μm, 125 μm, 188 μm any；
6. a kind of manufacturer of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate according to claim 5
Method, it is characterised in that: using PET as the curing process of the PEDOT solution of non-transparent flexible substrate in step (1): in transparent flexible base
The method that bottom configures PEDOT solution is any one of spraying, blade coating, spin coating, silk-screen printing, roll-to-roll coating, is scratched as most
It is good；The temperature being heating and curing is 130 DEG C, heating time 30min.
7. a kind of manufacturer of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate according to claim 2
Method, it is characterised in that: polyacrylic resin described in step (2) is urethane acrylate, epoxy acrylate, polyester
Any one of acid esters, polyether acrylate, unsaturated polyester (UP)；The acrylic monomers is iso-bornyl acrylate, 3 third
Omega-diol diacrylate, 1,4 butanediol diacrylate, 1,6- glycol diacrylate, adjacent phenyl benzene oxygen ethylacrylic acid
Ester, lauryl alcohol ester, 4- hydroxybutyl acrylate, hydroxyethyl methacrylate, lauric acid acrylate, four
One of hydrogen furanacrylate, ethoxyethoxyethyl acrylate, two contracting trimethylolpropane tetra-acrylates and
It is a variety of；The photoinitiator is 2- phenyl benzyl -2- dimethyl amine -1- (4- morpholine benzyl phenyl) butanone, methyl benzoylformate, 2-
Hydroxyl -4 '-(2- hydroxy ethoxy), -2- methyl phenyl ketone, 2- hydroxy-methyl phenyl-propane -1- ketone, 2,4,6- trimethylbenzene first
Acyl group-diphenyl phosphate oxidation one kind and a variety of.
8. a kind of manufacturer of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate according to claim 2
Method, it is characterised in that: the effect of spacer particle described in step (2) be control polymer dispersed liquid crystal layer thickness and uniformly
Property, by selecting the spacer particle of different-grain diameter then the thickness of adjustable polymer dispersed liquid crystal layer and optically and electrically to join
Number, 10~30 μm of particle size range, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm are best, glass or plastic material, plastics material
Matter is best.
9. a kind of manufacturer of polymer dispersed liquid crystal film based on macromolecule transparent conductive substrate according to claim 2
Method, it is characterised in that: UV curing schedule in step (2), 10~60mW/ of UV light wave segment limit 300~350nm, UV luminous intensity
cm2, UV 60~300S of curing time, the optional UV-LED array light source of UV light source and UV fluorescent tube, preferably UV-LED light source.
10. according to a kind of described in any item polymer dispersed liquid crystals based on macromolecule transparent conductive substrate of claim 2-9
The manufacturing method of film, it is characterised in that: mainly include the following steps: by 30~50% liquid-crystal composition of weight percent, 50~
70%UV prepolymer and 1 ‰~5 ‰ spacer particles are uniformly mixed by way of mechanical stirring or magnetic agitation, and in vacuum
Under the conditions of remove bubble, finally obtained PDLC mixed liquor is clear liquid and bubble-free, this PDLC mixed liquor is passed through
The mode of slot coated is coated between the first PEDOT transparent conductive substrate and the 2nd PEDOT transparent conductive substrate, passes through roll-in
Liquid crystal film is formed, then this liquid crystal film is put into the UV-LED lamp box of 300~350nm wavelength band, in 10~60mW/
cm2Illumination intensity range under continue 60~300S of irradiation, finally obtain the polymer dispersed liquid crystal film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382068.3A CN110333619A (en) | 2019-05-09 | 2019-05-09 | A kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382068.3A CN110333619A (en) | 2019-05-09 | 2019-05-09 | A kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110333619A true CN110333619A (en) | 2019-10-15 |
Family
ID=68139625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910382068.3A Pending CN110333619A (en) | 2019-05-09 | 2019-05-09 | A kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110333619A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111493633A (en) * | 2020-04-27 | 2020-08-07 | 东莞蓝海芯科技有限公司 | Intelligent control curtain with dimming function and intelligent control screen |
| JP2021067784A (en) * | 2019-10-23 | 2021-04-30 | 凸版印刷株式会社 | Dimming sheet and dimming device |
| CN113027017A (en) * | 2021-05-31 | 2021-06-25 | 天津包钢稀土研究院有限责任公司 | Anti-condensation heating temperature-control laminated heat-insulation glass curtain wall |
| CN113376891A (en) * | 2021-06-30 | 2021-09-10 | 汕头超声显示器（二厂）有限公司 | Manufacturing method of flexible PDLC device |
| CN113568211A (en) * | 2021-07-26 | 2021-10-29 | Oppo广东移动通信有限公司 | PDLC (polymer dispersed liquid crystal) dimming film, manufacturing method thereof, electronic equipment shell and electronic equipment |
| CN114672322A (en) * | 2022-04-15 | 2022-06-28 | 深圳市高仁电子新材料有限公司 | PDLC light modulation material, light modulation film and preparation method of light modulation film |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102712A (en) * | 1993-05-14 | 1995-05-17 | 特克特朗尼克公司 | Low electro-optic threshold liquid crystal cell and method of fabricating same |
| CN1421506A (en) * | 2002-12-06 | 2003-06-04 | 华东理工大学 | Prepn process of dispersed polymer liquid crystal material |
| CN1871325A (en) * | 2003-11-03 | 2006-11-29 | 陶氏康宁公司 | Silicone composition and polymer dispersed liquid crystal |
| US20140065917A1 (en) * | 2012-08-29 | 2014-03-06 | Dongguk University Industry-Academic Cooperation Foundation | Method of producing polymer dispersed liquid crystal device using cooling plate |
| CN104560059A (en) * | 2014-12-12 | 2015-04-29 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal material and application thereof |
| CN106125387A (en) * | 2016-08-23 | 2016-11-16 | 中节能万润股份有限公司 | A kind of PDLC display and PDLC electronic reader |
| CN106353911A (en) * | 2016-11-03 | 2017-01-25 | 珠海兴业应用材料科技有限公司 | Low driving voltage dimming film and preparation method thereof |
| CN106397799A (en) * | 2016-09-08 | 2017-02-15 | 江西科技师范大学 | PEDOT-PSS nanometer film with high conductivity and preparation and transfer methods thereof |
| CN106398715A (en) * | 2016-08-31 | 2017-02-15 | 中节能万润股份有限公司 | High temperature liquid crystal composition, high temperature polymer dispersed liquid crystal composition and high temperature polymer dispersed liquid crystal membrane |
| CN106479516A (en) * | 2016-08-31 | 2017-03-08 | 中节能万润股份有限公司 | A kind of low-voltage liquid-crystal composition and low-voltage polymer dispersion liquid crystal material |
| CN107817618A (en) * | 2017-10-25 | 2018-03-20 | 上海金泛斯标识有限公司 | Intelligent light modulation film |
| CN108089364A (en) * | 2017-12-26 | 2018-05-29 | 佛山市南海区瑞联胶粘制品有限公司 | A kind of self-adhering type light modulation film and preparation method thereof |
| CN108957826A (en) * | 2018-08-18 | 2018-12-07 | 深圳市华科创智技术有限公司 | A kind of PDLC light control material, light modulation film and preparation method thereof |
| CN109031836A (en) * | 2018-09-06 | 2018-12-18 | 江苏天贯碳纳米材料有限公司 | Ito glass conductive layer dividing method and ITO electro-conductive glass |
| CN109415630A (en) * | 2016-04-13 | 2019-03-01 | 日东电工株式会社 | Liquid-crystal composition, mixture, element and tunable light device |
| CN109597260A (en) * | 2017-09-29 | 2019-04-09 | 斯坦雷电气株式会社 | Electrochemistry Optical devices |
-
2019
- 2019-05-09 CN CN201910382068.3A patent/CN110333619A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102712A (en) * | 1993-05-14 | 1995-05-17 | 特克特朗尼克公司 | Low electro-optic threshold liquid crystal cell and method of fabricating same |
| CN1421506A (en) * | 2002-12-06 | 2003-06-04 | 华东理工大学 | Prepn process of dispersed polymer liquid crystal material |
| CN1871325A (en) * | 2003-11-03 | 2006-11-29 | 陶氏康宁公司 | Silicone composition and polymer dispersed liquid crystal |
| US20140065917A1 (en) * | 2012-08-29 | 2014-03-06 | Dongguk University Industry-Academic Cooperation Foundation | Method of producing polymer dispersed liquid crystal device using cooling plate |
| CN104560059A (en) * | 2014-12-12 | 2015-04-29 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal material and application thereof |
| CN109415630A (en) * | 2016-04-13 | 2019-03-01 | 日东电工株式会社 | Liquid-crystal composition, mixture, element and tunable light device |
| CN106125387A (en) * | 2016-08-23 | 2016-11-16 | 中节能万润股份有限公司 | A kind of PDLC display and PDLC electronic reader |
| CN106398715A (en) * | 2016-08-31 | 2017-02-15 | 中节能万润股份有限公司 | High temperature liquid crystal composition, high temperature polymer dispersed liquid crystal composition and high temperature polymer dispersed liquid crystal membrane |
| CN106479516A (en) * | 2016-08-31 | 2017-03-08 | 中节能万润股份有限公司 | A kind of low-voltage liquid-crystal composition and low-voltage polymer dispersion liquid crystal material |
| CN106397799A (en) * | 2016-09-08 | 2017-02-15 | 江西科技师范大学 | PEDOT-PSS nanometer film with high conductivity and preparation and transfer methods thereof |
| CN106353911A (en) * | 2016-11-03 | 2017-01-25 | 珠海兴业应用材料科技有限公司 | Low driving voltage dimming film and preparation method thereof |
| CN109597260A (en) * | 2017-09-29 | 2019-04-09 | 斯坦雷电气株式会社 | Electrochemistry Optical devices |
| CN107817618A (en) * | 2017-10-25 | 2018-03-20 | 上海金泛斯标识有限公司 | Intelligent light modulation film |
| CN108089364A (en) * | 2017-12-26 | 2018-05-29 | 佛山市南海区瑞联胶粘制品有限公司 | A kind of self-adhering type light modulation film and preparation method thereof |
| CN108957826A (en) * | 2018-08-18 | 2018-12-07 | 深圳市华科创智技术有限公司 | A kind of PDLC light control material, light modulation film and preparation method thereof |
| CN109031836A (en) * | 2018-09-06 | 2018-12-18 | 江苏天贯碳纳米材料有限公司 | Ito glass conductive layer dividing method and ITO electro-conductive glass |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021067784A (en) * | 2019-10-23 | 2021-04-30 | 凸版印刷株式会社 | Dimming sheet and dimming device |
| JP7395952B2 (en) | 2019-10-23 | 2023-12-12 | Ｔｏｐｐａｎホールディングス株式会社 | Light control sheet and light control device |
| CN111493633A (en) * | 2020-04-27 | 2020-08-07 | 东莞蓝海芯科技有限公司 | Intelligent control curtain with dimming function and intelligent control screen |
| CN111493633B (en) * | 2020-04-27 | 2021-12-07 | 东莞蓝海芯科技有限公司 | Intelligent control curtain with dimming function and intelligent control screen |
| CN113027017A (en) * | 2021-05-31 | 2021-06-25 | 天津包钢稀土研究院有限责任公司 | Anti-condensation heating temperature-control laminated heat-insulation glass curtain wall |
| CN113027017B (en) * | 2021-05-31 | 2021-08-24 | 天津包钢稀土研究院有限责任公司 | Anti-condensation heating temperature-control laminated heat-insulation glass curtain wall |
| CN113376891A (en) * | 2021-06-30 | 2021-09-10 | 汕头超声显示器（二厂）有限公司 | Manufacturing method of flexible PDLC device |
| CN113376891B (en) * | 2021-06-30 | 2023-02-17 | 汕头超声显示器（二厂）有限公司 | Manufacturing method of flexible PDLC device |
| CN113568211A (en) * | 2021-07-26 | 2021-10-29 | Oppo广东移动通信有限公司 | PDLC (polymer dispersed liquid crystal) dimming film, manufacturing method thereof, electronic equipment shell and electronic equipment |
| CN114672322A (en) * | 2022-04-15 | 2022-06-28 | 深圳市高仁电子新材料有限公司 | PDLC light modulation material, light modulation film and preparation method of light modulation film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110333619A (en) | A kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate | |
| CN104360526B (en) | Electric-controlled light-regulating film | |
| CN106200186A (en) | A kind of liquid crystal handwriting device and preparation method thereof | |
| CN108363255B (en) | A kind of electrochromism membrane material and its electrochromism membrane module of preparation | |
| CN107300818B (en) | Liquid crystal composite film with writing display function and preparation method thereof | |
| CN107286958A (en) | Wide viewing angle type PDLC composition, display device and preparation method | |
| CN106632772A (en) | Method for preparing polymer disperse liquid crystal film based on vinyl ether-thiol ultraviolet curing system | |
| CN105824145B (en) | Liquid crystal display device and its driving method | |
| CN105018110A (en) | Liquid crystal composition and electrically controlled light adjusting film | |
| CN108508668B (en) | Titanium dioxide nanorod array film/cholesteric liquid crystal composite wide wave reflecting film | |
| CN106543363A (en) | Flexible liquid crystal thin film material and method for manufacturing thin film that transmitance is varied with temperature | |
| CN106366235A (en) | Color polymer dispersed liquid crystal material preparation method | |
| CN107272294A (en) | A kind of electric-controlled intelligent window and preparation method, light regulation method | |
| CN110989236B (en) | Method for preparing flexible trans-polymer dispersed liquid crystal film by utilizing photoetching technology | |
| CN102621748B (en) | Method for manufacturing liquid crystal panel | |
| CN106632883A (en) | Preparation method for intelligent display film with switchable visual angle | |
| CN103345016B (en) | Light guide plate and preparation method thereof, backlight and transparent display | |
| CN105820823B (en) | Display medium and display device | |
| CN106882931A (en) | A kind of novel intelligent display building glass and preparation method thereof | |
| CN110452586A (en) | A kind of preparation method of electrochromism film | |
| CN110095909A (en) | A kind of magnetic erazing type liquid crystal film board and preparation method thereof | |
| JPH075440A (en) | Liquid crystal resin composition for light-controlling liquid crystal element | |
| CN109884817A (en) | A kind of low voltage drive liquid crystal light modulation film and preparation method thereof | |
| TWI714509B (en) | Liquid crystal composition and liquid crystal optical device | |
| CN204945556U (en) | Utilize the intelligent glass that Polymer Dispersed Liquid Crystal makes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191015 |
|
| RJ01 | Rejection of invention patent application after publication |