CN107300818A - It is a kind of that there is liquid crystal laminated film of writing display function and preparation method thereof - Google Patents
It is a kind of that there is liquid crystal laminated film of writing display function and preparation method thereof Download PDFInfo
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- CN107300818A CN107300818A CN201710623210.XA CN201710623210A CN107300818A CN 107300818 A CN107300818 A CN 107300818A CN 201710623210 A CN201710623210 A CN 201710623210A CN 107300818 A CN107300818 A CN 107300818A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 148
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- 239000012528 membrane Substances 0.000 claims abstract description 57
- 210000004276 hyalin Anatomy 0.000 claims abstract description 56
- 229920000642 polymer Polymers 0.000 claims abstract description 51
- 238000009413 insulation Methods 0.000 claims abstract description 48
- 239000002131 composite material Substances 0.000 claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000009966 trimming Methods 0.000 claims description 26
- 238000000576 coating method Methods 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 229920000106 Liquid crystal polymer Polymers 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 239000004005 microsphere Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000178 monomer Substances 0.000 claims description 9
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000006116 polymerization reaction Methods 0.000 claims description 8
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 6
- 239000004745 nonwoven fabric Substances 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 4
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- KWVGIHKZDCUPEU-UHFFFAOYSA-N 2,2-dimethoxy-2-phenylacetophenone Chemical group C=1C=CC=CC=1C(OC)(OC)C(=O)C1=CC=CC=C1 KWVGIHKZDCUPEU-UHFFFAOYSA-N 0.000 claims description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- -1 Ice ester Chemical class 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 claims description 2
- 125000005395 methacrylic acid group Chemical group 0.000 claims description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 2
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 149
- 239000004372 Polyvinyl alcohol Substances 0.000 description 84
- 229920002451 polyvinyl alcohol Polymers 0.000 description 84
- 230000000694 effects Effects 0.000 description 11
- 230000008901 benefit Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000005684 electric field Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 2
- 239000004990 Smectic liquid crystal Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- G02F1/137—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
- G02F1/1391—Bistable or multi-stable liquid crystal cells
-
- 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
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133784—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by rubbing
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention belongs to field of liquid crystal display, a kind of liquid crystal laminated film for having and writing display function and preparation method thereof is particularly disclosed.This has the liquid crystal laminated film of writing display function, includes successively from top to bottom：Lower surface is coated with the PET black films that the PET hyaline membranes of ITO layer, PVA insulation oriented layer, liquid crystal/polymer/interval microballoon composite bed and upper surface are coated with ITO layer.This has liquid crystal laminated film of writing display function and preparation method thereof, due to adding PVA insulation oriented layers, so that there are no short-circuit risks in two conductive layers, and then significantly lift yield rate and the life-span of product, reduce production cost, the driving voltage of liquid crystal film is reduced simultaneously, can lift the key technical index such as brightness, the contrast of film.
Description
Technical field
The invention belongs to field of liquid crystal display, more particularly to a kind of liquid crystal laminated film with writing display function and its
Preparation method.
Background technology
Liquid crystal laminated film with writing display function is in the following alternative blackboard applied in fields such as education, offices
Or the writing implement such as blank.This film utilizes the bistable characteristic of liquid crystal, and shape is reflected with light extraction is presented under writing pressure
State, the characteristic that the writing write upon application of a voltage can be completely removed.Specifically, this film is only relied in writing
Extraneous ray of reflecting can be realized as perfect written handwriting, so as to realize the purpose of reduction product power consumption.Secondly, this film
Only need to be write with the instrument of similar finger tip during writing, without using any consumptive material, can especially allow teachers to take leave of tradition
The chalk dust that chalk is brought, ensures that teacher's is healthy.Moreover, this film elimination effect is good, elimination efficiency is high, it can do
Removed to a key, be much better than existing blackboard and blank.
At present, the structure for the traditional liquid crystal laminated film that the manufacturer of each production liquid crystal handwriting pad is used is PET hyaline membrane
Liquid crystal polymer is directly poured between PET black films, the advantage of such a structure is simple production process, with short production cycle, still
But have between many disadvantages, such as two layers ito thin film that distance is very small, there is contact short circuit risk, product yield is low, uses
Short life, driving voltage height etc..In order to overcome these defects of traditional liquid crystal laminated film, current common method is to improve single
Body content, reduces the risk, but improve and fail to understand by way of increasing the size of solid microsphere, increasing polymer content
It is aobvious, and the size of increase solid microsphere can increase the distance between ITO layer, and driving voltage can increase therewith；Increase polymer contains
Amount, can cause to reduce the regularity of liquid crystal arrangement, and then influence the brightness of liquid crystal reflection and the contrast of entirety, and these are all significantly
Limit the use of liquid crystal handwriting pad.
The content of the invention
The present invention makes two conductive layers there is no short-circuit risks, drop to make up the deficiencies in the prior art there is provided one kind
Liquid crystal laminated film and its preparation side with writing display function of low production cost, the driving voltage of reduction liquid crystal film
Method.
The present invention is achieved through the following technical solutions：
It is a kind of that there is the liquid crystal laminated film for writing display function, include successively from top to bottom：Lower surface is coated with ITO layer
PET hyaline membranes, PVA insulation oriented layer, liquid crystal/polymer/interval microballoon composite bed and upper surface are coated with the PET black films of ITO layer；
The thickness of the PET hyaline membranes for being coated with ITO layer is 100-188 microns, and mist degree is 10%-30%, and surface resistivity is 100-
500 ohm；The thickness of the PET black films for being coated with ITO layer is 100-188 microns, and surface resistivity is 100-500 ohm；Institute
The thickness for stating PVA insulating barrier oriented layers is 0.1-5 microns；Between the thickness of the liquid crystal/polymer/interval microballoon composite bed is equal to
Every the diameter of microballoon.
The component that the liquid crystal/polymer/interval microballoon composite bed includes following percentage by weight is made：Birefringence is big
In 0.18, clearing point be less than 135 DEG C, fusing point higher than -40 DEG C of nematic liquid crystal be that 83%-97%, chipal compounds are 2%-
3%th, the interval microballoon 0.1%- that ultraviolet polymerisable monomer 1%-12%, light trigger are 0.1%-1%, size is 3-25 microns
1%.
The interval microballoon is polystyrene microsphere or poly (methyl methacrylate) micro-sphere；The nematic liquid crystal is
One kind in SLC1717, SLC151512 or BNHR49000, the chipal compounds are R5011, and the light trigger is
IRGACURE 651。
It is described it is ultraviolet can the component of polycondensation monomer including following percentage by weight be made：The own ester of acrylic acid -3,5,5- trimethyls
The different ice ester 0%-12% of 0%-12%, methacrylic acid, dodecyl acrylate 0%-12%, glycol diacrylate 0%-
12%th, methacrylic acid-beta-hydroxy ethyl ester 0%-12%.
The preparation method of the liquid crystal laminated film with writing display function, comprises the following steps：
(1) a piece of lower surface of preparation is coated with the big upper surfaces such as the PET hyaline membranes of ITO layer, and a piece of and PET hyaline membranes
It is coated with the PET black films of ITO layer；
(2) PVA insulation oriented layers are prepared on the ITO layer surface of PET black films；
(3) prepared between PVA that step (2) is obtained insulation oriented layer and the ITO layer of PET hyaline membrane lower surfaces liquid crystal/
Polymer/interval microballoon composite bed, obtains liquid crystal laminated film blank；
(4) the liquid crystal laminated film blank that step (3) is obtained is cut into film square piece；The film square piece it is a length of
It is 0.1-1.25 meters, a width of 0.1-1.25 meters；
(5) the PET hyaline membranes one for the film square piece for obtaining step (4) are placed upwardly, with high-precision film cutting machine to every
The PET hyaline membranes of individual film square piece carry out trimming processing, black to PET again with high-precision film cutting machine then by film square piece turn-over
Film carries out trimming processing, and the removed width of the PET hyaline membranes and PET black films is 0.1-5 centimetres during trimming, to draw electricity
Road；
(6) non-woven fabrics soaked with ethanol at the trimming of film square piece to cleaning, until liquid crystal/polymer/interval
Untill microballoon composite bed is cleaned out with PVA insulation oriented layer, to draw circuit；
(7) 5-10 is stood after the completion of sealing glue, smearing is uniformly smeared made from step (6) at the trimming of film square piece
Minute, producing the present invention has the liquid crystal laminated film of writing display function.
The preparation method of the PVA insulation oriented layer, comprises the following steps：
A certain amount of PVA is dissolved into 90 DEG C -100 DEG C of hot water by (2-1), is heated 4-7 hours, is prepared mass concentration and is
The 1%-20% PVA aqueous solution；
(2-2) is coated uniformly on PET black films upper surface by being coated with dryer by the PVA aqueous solution that step (1) is prepared
ITO layer surface, the thickness of final PVA insulating barriers is controlled by controlling PVA aqueous coatings thickness and concentration；Coating is completed
Afterwards, feeding vacuum heating apparatus is dried 1-120 minutes under 80-100 DEG C of vacuum condition；
(2-3) carries out orientation process by friction orientation equipment to PVA surface of insulating layer so that PVA surfaces form parallel
Raceway groove, rate of orientation is 1-5 ms/min, orientation number of times 1-5 times, produces PVA insulation oriented layers.
The preparation method of the liquid crystal/polymer/interval microballoon composite bed, comprises the following steps：
It will be injected after liquid crystal/polymer/interval microballoon composite bed each component mixture by full-automatic laminating machine on PET black films
Between the PVA insulation oriented layers on surface and the ITO layer of PET hyaline membrane lower surfaces, and solidify equipment utilization ultraviolet light through ultraviolet light
The shaping of polymerisation solidify afterwards occurs for irradiation, forms liquid crystal/polymer/interval microballoon composite bed.
The compounding method of the liquid crystal/polymer/interval microballoon composite bed each component is：Liquid crystal polymer each component is pressed
Ratio is mixed, and is mixed 1-10 minutes in 60-80 DEG C of ultrasonic water bath, then takes out and 1-10 points are vibrated on shaker
Clock.
Wherein, a length of 365 nanometers of the ultraviolet light wave of ultraviolet light, aggregate power is 1-10 milliwatts/square centimeter, polymerization
Time is 1-60 minutes, and speed of production is 0.5-5 ms/min.
The tool of the thickness of final PVA insulating barriers is controlled in step (2) by controlling PVA aqueous coatings thickness and concentration
Body method is：It is 10-100 microns to control PVA aqueous coatings thickness, and film speed is 1-5 ms/min.
The performance of each component of the present invention is as follows with acting on：
It is coated with the PET hyaline membranes of ITO layer：The film be the transparent membrane with certain mist degree, with certain mist degree be in order to
Reduction is reflective, lifts the angle of visibility and contrast of display function, is as driving liquid crystal texture change with ITO conductive layer purpose
One of electrode.
PVA (polyvinyl alcohol) insulation oriented layers：PVA insulation oriented layer solves between two layers of electrode easy contact short circuit
Problem, and the coating of PVA materials is easy, and it is also easy to wipe, and is circuit connectable after erasing；Another advantage of PVA materials exists
In that can form regular raceway groove simply by friction, formation raceway groove can help to liquid crystal molecule and prolong channel direction orientation, and
Higher, the higher liquid crystal aligning integrity degree of integrity degree is orientated, reflecting rate can be effectively improved, and then improve the brightness of writing.
Liquid crystal：Liquid crystal laminated film of the present invention is employed have been used with three kinds of liquid in the conventional liquid crystal board patent of difference
The liquid crystal system of brilliant TEXTURE STATE, presented when flat liquid crystal texture, added electric field is presented using pressure orientation effect at writing to
Row phase liquid crystal texture, remove after electric field presentation smectic liquid crystal texture, liquid crystal temperature in use wider range, is done at applicable classroom
The environment such as public room, open air.
Polymer：Liquid crystal laminated film of the present invention adds initiator using polymerized monomer, is triggered after overlay film by ultraviolet
The mode of polymerization forms polymeric system, because the presence of polymeric system can play the effect of grappling liquid crystal aligning state, makes
The planar texture that presents under pressure of liquid crystal texture can effectively be kept, the presence of polymeric system can be between grappling
, can also be by adjusting the quantity of polymer every microballoon effect so that microballoon will not be reunited again during liquid crystal film use
To adjust the thickness of writing notes.
It is spaced microballoon：Interval microballoon is the effect that thickness of liquid crystal layer is controlled in coating process, can also be micro- by being spaced
Ball quantity adjusts the thickness for writing notes.
It is coated with the PET black films of ITO layer：It is one of electrode as driving liquid crystal texture change with ITO conductive layer purpose,
The purpose of black is for absorption visible ray, it is to avoid reflection, improves contrast.
Chipal compounds：Nematic liquid crystal is changed into cholesteric liquid crystal, cholesteric liquid crystal texture can under pressure effect
Planar texture is presented.
Ultraviolet polymerisable monomer：Polymer network is formed under initiator effect.
Light trigger：Ultraviolet light-initiated ultraviolet polymerisable monomer is absorbed to polymerize to form polymer network.
There is the present invention beneficial effect of the liquid crystal laminated film of writing display function and preparation method thereof to be：
(1) advantage of insulating barrier is increased：
Creative introduces PVA insulating barriers so that two ITO layers do not have short-circuit risks, and then significantly lifting production
The yield rate of product and life-span, reduce the driving voltage of laminated film；PVA insulating barriers are bigger than ITO layer frictional force, to liquid crystal laminar flow
Dynamic property plays restriction effect, and then can be effectively reduced the doping of polymer in liquid crystal layer, thin so as to lift liquid crystal
The key technical index such as brightness, the contrast of film；Due to adding PVA insulating barriers so that small size interval microballoon can be used,
And then liquid crystal usage amount can be effectively reduced, production cost is reduced, while reducing the driving voltage of liquid crystal film.
(2) using the advantage of friction orientation：
Oriented layer is coated with the PET hyaline membranes of conductive layer in lower surface, and PET hyaline membranes can be caused by ambient pressure
Afterwards, the position channel arrangements orientation that friction leaves is prolonged, and the oriented is than without the more regular of oriented layer, and then can carry
Rise the key technical index such as brightness, the contrast of liquid crystal film.
(3) using advantages of the PVA as insulation oriented layer：
Selection PVA material causes be PVA is easily coated, easy film forming, chemical stability are good, the higher transparency, easy-clear,
Good insulating, easy orientation.Because the contribution that this liquid crystal laminated film is protruded is to solve easily to contact short between two layers of electrode
Although the problem of road, the addition of insulating barrier serves insulating effect, but electrode external circuitses then turn into difficulty.PVA materials are just
This problem can be solved well, coating is easy, and it is also easy to wipe, be circuit connectable after erasing.Another advantage of PVA materials
It is that regular raceway groove can be formed simply by friction, formation raceway groove can help to liquid crystal molecule and prolong channel direction orientation,
And higher, the higher liquid crystal aligning integrity degree of orientation integrity degree, reflecting rate, and then the brightness of raising writing can be effectively improved,
It is highly suitable as the oriented layer that insulate.
(4) using wide temperature range, the birefringence (advantage of nematic liquid crystal big Δ n)：
Liquid crystal laminated film of the present invention employs birefringence (nematic liquid crystal big Δ n), according to selective reflecting machine
Formula Δ λ=Δ nP in reason, it was demonstrated that broader optical band can effectively be reflected using the liquid crystal, and then it is thin to lift liquid crystal
The key technical index such as brightness, the contrast of film；The liquid crystal system with three kinds of liquid crystal texture states has been used, it is sharp at writing
Nematic liquid crystal texture is presented when flat liquid crystal texture, added electric field is presented with pressure orientation effect, removes smectic is presented after electric field
Phase liquid crystal texture, liquid crystal temperature in use wider range, the environment such as applicable all classrooms, office, open air.
(5) using a series of advantage of ultraviolet polymerisable monomers：
A series of ultraviolet polymerisable monomers, polymer network, the pitch of the chiral compound of meeting can be formed through ultraviolet polymerization
Grappling is carried out, it is ensured that the uneven distribution of chipal compounds pitch, so that it is wide to add back wave.In addition, polymer network
Increase person's handwriting can be made to attenuate, obtain more preferable writing effect.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is liquid crystal arrangement mode structural representation at film writing of the present invention；
Fig. 2 is liquid crystal arrangement mode structural representation when film added electric field of the present invention removes writing.
In figure, 1, lower surface be coated with the PET hyaline membranes of ITO layer, 2, PVA insulation oriented layers, 3, liquid crystal/polymer/interval
Microballoon composite bed, 4, upper surface be coated with the PET black films of ITO layer.
Embodiment
With reference to embodiment, the invention will be further described, but the invention is not limited in this, the system in embodiment
Preparation Method is customary preparation methods, is no longer described in detail.
Embodiment 1：
As Figure 1-Figure 2, the present embodiment has the liquid crystal laminated film of writing display function, wraps successively from top to bottom
Include：Lower surface be coated with the PET hyaline membranes 1 of ITO layer, PVA insulation oriented layer 2, liquid crystal/polymer/interval microballoon composite bed 3 and on
Surface is coated with the PET black films 4 of ITO layer.
This has the liquid crystal laminated film of writing display function, and the parameter of each Rotating fields is as follows：
This has in the liquid crystal laminated film of writing display function, and the composition of liquid crystalline polymer layer is following (with double centner
Meter, as follows)：
The particle diameter of the polystyrene microsphere is 3 microns.
The preparation method of the liquid crystal laminated film with writing display function, comprises the following steps：
(1) a piece of lower surface of preparation is coated with the big upper surfaces such as the PET hyaline membranes of ITO layer, and a piece of and PET hyaline membranes
It is coated with the PET black films of ITO layer；
(2) PVA insulation oriented layers are prepared on the ITO layer surface of PET black films；
(3) prepared between PVA that step (2) is obtained insulation oriented layer and the ITO layer of PET hyaline membrane lower surfaces liquid crystal/
Polymer/interval microballoon composite bed, obtains liquid crystal laminated film blank；
(4) the liquid crystal laminated film blank that step (3) is obtained is cut into film square piece；The film square piece it is a length of
1.25 meters, a width of 1.1 meters；
(5) the PET hyaline membranes one for the film square piece for obtaining step (4) are placed upwardly, with high-precision film cutting machine to every
The PET hyaline membranes of individual film square piece carry out trimming processing, black to PET again with high-precision film cutting machine then by film square piece turn-over
Film carries out trimming processing, and the removed width of the PET hyaline membranes and PET black films is 0.1-5 centimetres during trimming, to draw electricity
Road；
(6) non-woven fabrics soaked with ethanol is cleaned to excision position, until liquid crystal/polymer/interval microballoon is combined
Untill layer is cleaned out with PVA insulation oriented layer, to draw circuit；
(7) 9 points are being stood made from step (6) at the trimming of film square piece after the completion of 502 glue of uniform smearing, smearing
Clock, producing the present invention has the liquid crystal laminated film of writing display function.
The preparation method of the PVA insulation oriented layer, comprises the following steps：
A certain amount of PVA is dissolved into 90 DEG C of water by (2-1), is heated 4 hours, prepares the PVA water that mass concentration is 3%
Solution；
(2-2) is applied by being coated with the PVA aqueous solution that dryer prepares step (1) with 2 ms/min of film rate uniform
The conductive layer surface of PET black films upper surface is overlayed on, PVA aqueous coatings thickness is 10 microns, then in 80 DEG C of vacuum environments
Heating, drying 10 minutes；
(2-3) carries out orientation process by friction orientation equipment to PVA surface of insulating layer, and 5 ms/min of rate of orientation takes
To number of times 5 times so that PVA surfaces form parallel channel, PVA insulation oriented layers are produced.
The preparation method of the liquid crystalline polymer layer is as follows：
Liquid crystal/polymer/interval microballoon composite bed each component is mixed in proportion by (3-1), in 60 DEG C of ultrasound
Mixed 10 minutes in water-bath, then take out and vibrated 10 minutes on shaker；
Liquid crystal/polymer after mixture/interval microballoon is combined layer component and passes through full-automatic laminating machine injection PET by (3-2)
Between the PVA insulation oriented layers of black film upper surface and the ITO layer of PET hyaline membrane lower surfaces, and solidify equipment utilization through ultraviolet light
The shaping of polymerisation solidify afterwards occurs for ultraviolet light, forms liquid crystal/polymer/interval microballoon composite bed；The ultraviolet light wave
A length of 365 nanometers, aggregate power is 10 milliwatts/square centimeter, and polymerization time is 5 minutes, and speed of production is 3 ms/min.
Embodiment 2：
As Figure 1-Figure 2, the present embodiment has the liquid crystal laminated film of writing display function, wraps successively from top to bottom
Include：Lower surface be coated with the PET hyaline membranes 1 of ITO layer, PVA insulation oriented layer 2, liquid crystal/polymer/interval microballoon composite bed 3 and on
Surface is coated with the PET black films 4 of ITO layer.
This has the liquid crystal laminated film of writing display function, and the parameter of each Rotating fields is as follows：
This has in the liquid crystal laminated film of writing display function, and the composition of liquid crystalline polymer layer is following (with double centner
Meter, as follows)：
The particle diameter of the polystyrene microsphere is 5 microns.
The preparation method of the liquid crystal laminated film with writing display function, comprises the following steps：
(1) a piece of lower surface of preparation is coated with the big upper surfaces such as the PET hyaline membranes of ITO layer, and a piece of and PET hyaline membranes
It is coated with the PET black films of ITO layer；
(2) PVA insulation oriented layers are prepared on the ITO layer surface of PET black films；
(3) prepared between PVA that step (2) is obtained insulation oriented layer and the ITO layer of PET hyaline membrane lower surfaces liquid crystal/
Polymer/interval microballoon composite bed, obtains liquid crystal laminated film blank；
(4) the liquid crystal laminated film blank that step (3) is obtained is cut into film square piece；The film square piece it is a length of
0.5 meter, a width of 0.5 meter；
(5) the PET hyaline membranes one for the film square piece for obtaining step (4) are placed upwardly, with high-precision film cutting machine to every
The PET hyaline membranes of individual film square piece carry out trimming processing, black to PET again with high-precision film cutting machine then by film square piece turn-over
Film carries out trimming processing, and the removed width of the PET hyaline membranes and PET black films is 0.1-5 centimetres during trimming, to draw electricity
Road；
(6) non-woven fabrics soaked with ethanol is cleaned to excision position, until liquid crystal/polymer/interval microballoon is combined
Untill layer is cleaned out with PVA insulation oriented layer, to draw circuit；
(7) 10 points are being stood made from step (6) at the trimming of film square piece after the completion of 502 glue of uniform smearing, smearing
Clock, producing the present invention has the liquid crystal laminated film of writing display function.
The preparation method of the PVA insulation oriented layer, comprises the following steps：
A certain amount of PVA is dissolved into 90 DEG C of water by (2-1), is heated 7 hours, prepares the PVA that mass concentration is 15%
The aqueous solution；
(2-2) is applied by being coated with the PVA aqueous solution that dryer prepares step (1) with 4 ms/min of film rate uniform
The conductive layer surface of PET black films upper surface is overlayed on, PVA aqueous coatings thickness is 90 microns, then in 80 DEG C of vacuum environments
Heating, drying 10 minutes；
(2-3) carries out orientation process by friction orientation equipment to PVA surface of insulating layer, and 5 ms/min of rate of orientation takes
To number of times 2 times so that PVA surfaces form parallel channel, PVA insulation oriented layers are produced.
The preparation method of the liquid crystalline polymer layer is as follows：
Liquid crystal/polymer/interval microballoon composite bed each component is mixed in proportion by (3-1), in 60 DEG C of ultrasound
Mixed 4 minutes in water-bath, then take out and vibrated 10 minutes on shaker；
Liquid crystal/polymer after mixture/interval microballoon is combined layer component and passes through full-automatic laminating machine injection PET by (3-2)
Between the PVA insulation oriented layers of black film upper surface and the ITO layer of PET hyaline membrane lower surfaces, and solidify equipment utilization through ultraviolet light
The shaping of polymerisation solidify afterwards occurs for ultraviolet light, forms liquid crystal/polymer/interval microballoon composite bed；The ultraviolet light wave
A length of 365 nanometers, aggregate power is 5 milliwatts/square centimeter, and polymerization time is 40 minutes, and speed of production is 0.5 m/min.
Embodiment 3：
As Figure 1-Figure 2, the present embodiment has the liquid crystal laminated film of writing display function, wraps successively from top to bottom
Include：Lower surface be coated with the PET hyaline membranes 1 of ITO layer, PVA insulation oriented layer 2, liquid crystal/polymer/interval microballoon composite bed 3 and on
Surface is coated with the PET black films 4 of ITO layer.
This has the liquid crystal laminated film of writing display function, and the parameter of each Rotating fields is as follows：
This has in the liquid crystal laminated film of writing display function, and the composition of liquid crystalline polymer layer is following (with double centner
Meter, as follows)：
The particle diameter of the polystyrene microsphere is 15 microns.
The preparation method of the liquid crystal laminated film with writing display function, comprises the following steps：
(1) a piece of lower surface of preparation is coated with the big upper surfaces such as the PET hyaline membranes of ITO layer, and a piece of and PET hyaline membranes
It is coated with the PET black films of ITO layer；
(2) PVA insulation oriented layers are prepared on the ITO layer surface of PET black films；
(3) prepared between PVA that step (2) is obtained insulation oriented layer and the ITO layer of PET hyaline membrane lower surfaces liquid crystal/
Polymer/interval microballoon composite bed, obtains liquid crystal laminated film blank；
(4) the liquid crystal laminated film blank that step (3) is obtained is cut into film square piece；The film square piece it is a length of
1.25 meters, a width of 1.25 meters；
(5) the PET hyaline membranes one for the film square piece for obtaining step (4) are placed upwardly, with high-precision film cutting machine to every
The PET hyaline membranes of individual film square piece carry out trimming processing, black to PET again with high-precision film cutting machine then by film square piece turn-over
Film carries out trimming processing, and the removed width of the PET hyaline membranes and PET black films is 0.1-5 centimetres during trimming, to draw electricity
Road；
(6) non-woven fabrics soaked with ethanol is cleaned to excision position, until liquid crystal/polymer/interval microballoon is combined
Untill layer is cleaned out with PVA insulation oriented layer；
(7) 6 points are being stood made from step (6) at the trimming of film square piece after the completion of 502 glue of uniform smearing, smearing
Clock, producing the present invention has the liquid crystal laminated film of writing display function.
The preparation method of the PVA insulation oriented layer, comprises the following steps：
A certain amount of PVA is dissolved into 90 DEG C of water by (2-1), is heated 7 hours, prepares the PVA water that mass concentration is 3%
Solution；
(2-2) is applied by being coated with the PVA aqueous solution that dryer prepares step (1) with 4 ms/min of film rate uniform
The conductive layer surface of PET black films upper surface is overlayed on, PVA aqueous coatings thickness is 10 microns, then in 80 DEG C of vacuum environments
Heating, drying 6 minutes；
(2-3) carries out orientation process by friction orientation equipment to PVA surface of insulating layer, and 2 ms/min of rate of orientation takes
To number of times 3 times so that PVA surfaces form parallel channel, PVA insulation oriented layers are produced.
The preparation method of the liquid crystalline polymer layer is as follows：
Liquid crystal/polymer/interval microballoon composite bed each component is mixed in proportion by (3-1), in 70 DEG C of ultrasound
Mixed 3 minutes in water-bath, then take out and vibrated 3 minutes on shaker；
Liquid crystal/polymer after mixture/interval microballoon is combined layer component and passes through full-automatic laminating machine injection PET by (3-2)
Between the PVA insulation oriented layers of black film upper surface and the ITO layer of PET hyaline membrane lower surfaces, and solidify equipment utilization through ultraviolet light
The shaping of polymerisation solidify afterwards occurs for ultraviolet light, forms liquid crystal/polymer/interval microballoon composite bed；The ultraviolet light wave
A length of 365 nanometers, aggregate power is 3 milliwatts/square centimeter, and polymerization time is 5 minutes, and speed of production is 5 ms/min.
Embodiment 4：
As Figure 1-Figure 2, the present embodiment has the liquid crystal laminated film of writing display function, wraps successively from top to bottom
Include：Lower surface be coated with the PET hyaline membranes 1 of ITO layer, PVA insulation oriented layer 2, liquid crystal/polymer/interval microballoon composite bed 3 and on
Surface is coated with the PET black films 4 of ITO layer.
This has the liquid crystal laminated film of writing display function, and the parameter of each Rotating fields is as follows：
This has in the liquid crystal laminated film of writing display function, and the composition of liquid crystalline polymer layer is following (with double centner
Meter, as follows)：
The particle diameter of the polystyrene microsphere is 25 microns.
The preparation method of the liquid crystal laminated film with writing display function, comprises the following steps：
(1) a piece of lower surface of preparation is coated with the big upper surfaces such as the PET hyaline membranes of ITO layer, and a piece of and PET hyaline membranes
It is coated with the PET black films of ITO layer；
(2) PVA insulation oriented layers are prepared on the ITO layer surface of PET black films；
(3) prepared between PVA that step (2) is obtained insulation oriented layer and the ITO layer of PET hyaline membrane lower surfaces liquid crystal/
Polymer/interval microballoon composite bed, obtains liquid crystal laminated film blank；
(4) the liquid crystal laminated film blank that step (3) is obtained is cut into film square piece；The film square piece it is a length of
1.25 meters, a width of 1.1 meters；
(5) the PET hyaline membranes one for the film square piece for obtaining step (4) are placed upwardly, with high-precision film cutting machine to every
The PET hyaline membranes of individual film square piece carry out trimming processing, black to PET again with high-precision film cutting machine then by film square piece turn-over
Film carries out trimming processing, and the removed width of the PET hyaline membranes and PET black films is 0.1-5 centimetres during trimming, to draw electricity
Road；
(6) non-woven fabrics soaked with ethanol is cleaned to excision position, until liquid crystal/polymer/interval microballoon is combined
Untill layer is cleaned out with PVA insulation oriented layer；
(7) 10 points are being stood made from step (6) at the trimming of film square piece after the completion of 502 glue of uniform smearing, smearing
Clock, producing the present invention has the liquid crystal laminated film of writing display function.
The preparation method of the PVA insulation oriented layer, comprises the following steps：
A certain amount of PVA is dissolved into 100 DEG C of water by (2-1), is heated 6 hours, prepares the PVA that mass concentration is 20%
The aqueous solution；
(2-2) is applied by being coated with the PVA aqueous solution that dryer prepares step (1) with 1 m/min of film rate uniform
The conductive layer surface of PET black films upper surface is overlayed on, PVA aqueous coatings thickness is 100 microns, then in 100 DEG C of vacuum environments
Middle heating, drying 100 minutes；
(2-3) carries out orientation process by friction orientation equipment to PVA surface of insulating layer, and 3 ms/min of rate of orientation takes
To number of times 3 times so that PVA surfaces form parallel channel, PVA insulation oriented layers are produced.
The preparation method of the liquid crystalline polymer layer is as follows：
Liquid crystal/polymer/interval microballoon composite bed each component is mixed in proportion by (3-1), in 80 DEG C of ultrasound
Mixed 1 minute in water-bath, then take out and vibrated 1 minute on shaker；
Liquid crystal/polymer after mixture/interval microballoon is combined layer component and passes through full-automatic laminating machine injection PET by (3-2)
Between the PVA insulation oriented layers of black film upper surface and the ITO layer of PET hyaline membrane lower surfaces, and solidify equipment utilization through ultraviolet light
The shaping of polymerisation solidify afterwards occurs for ultraviolet light, forms liquid crystal/polymer/interval microballoon composite bed；The ultraviolet light wave
A length of 365 nanometers, aggregate power is 1 milliwatt/square centimeter, and polymerization time is 1 minute, and speed of production is 0.5 m/min.
The model of high-precision film cutting machine described in embodiment 1-4：The production of Beijing clothing excess value code Science and Technology Ltd.
GD1512；It is described coating dryer purchase producer be：Kang get new composites Group Plc.
What 1-4 of the embodiment of the present invention was prepared has the liquid crystal laminated film various performance parameters of writing display function flat
Average is as follows：
The liquid crystal laminated film various performance parameters of the present invention of table 1
Data can see from table 1, and the present invention has the liquid crystal laminated film properties of writing display function excellent
In commercially available prod, suitable for wide popularization and application.
Claims (10)
1. a kind of have the liquid crystal laminated film for writing display function, it is characterized in that：Include successively from top to bottom：Lower surface is coated with
PET hyaline membranes, PVA insulation oriented layer, liquid crystal/polymer/interval microballoon composite bed and the upper surface of ITO layer are coated with ITO layer
PET black films；The thickness of the PET hyaline membranes for being coated with ITO layer is 100-188 microns, and mist degree is 10%-30%, sheet resistance
Rate is 100-500 ohm；The thickness of the PET black films for being coated with ITO layer is 100-188 microns, and surface resistivity is 100-500
Ohm；The thickness of the PVA insulating barriers oriented layer is 0.1-5 microns；The thickness of the liquid crystal/polymer/interval microballoon composite bed
Degree is equal to the diameter of interval microballoon.
2. according to claim 1 have the liquid crystal laminated film for writing display function, it is characterized in that：The liquid crystal/poly-
The component that compound/interval microballoon composite bed includes following percentage by weight is made：Birefringence is more than 0.18, clearing point and is less than
135 DEG C, fusing point higher than -40 DEG C of nematic liquid crystal be that 83%-97%, chipal compounds are 2%-3%, ultraviolet polymerisable monomer
The interval microballoon 0.1%-1% that 1%-12%, light trigger are 0.1%-1%, size is 3-25 microns.
3. according to claim 2 have the liquid crystal laminated film for writing display function, it is characterized in that：The interval microballoon
For polystyrene microsphere or poly (methyl methacrylate) micro-sphere；The nematic liquid crystal be SLC1717, SLC151512 or
One kind in BNHR49000, the chipal compounds are R5011, and the light trigger is IRGACURE 651.
4. according to claim 2 have the liquid crystal laminated film for writing display function, it is characterized in that：It is described ultraviolet to gather
The component that monomer includes following percentage by weight is made：The own ester 0%-12% of acrylic acid -3,5,5- trimethyls, methacrylic acid are different
Ice ester 0%-12%, dodecyl acrylate 0%-12%, glycol diacrylate 0%-12%, methacrylic acid-β-hydroxyl second
Ester 0%-12%.
5. a kind of preparation method of liquid crystal laminated film with writing display function as described in claim 1-4 is any, its
It is characterized in：Comprise the following steps：
(1) the PET hyaline membranes that a piece of lower surface is coated with ITO layer are prepared, and a piece of upper surface big with PET hyaline membranes etc. is coated with
The PET black films of ITO layer；
(2) PVA insulation oriented layers are prepared on the ITO layer surface of PET black films；
(3) liquid crystal/polymerize is prepared between PVA that step (2) is obtained insulation oriented layer and the ITO layer of PET hyaline membrane lower surfaces
Thing/interval microballoon composite bed, obtains liquid crystal laminated film blank；
(4) the liquid crystal laminated film blank that step (3) is obtained is cut into film square piece；A length of 0.1- of the film square piece
It is 1.25 meters, a width of 0.1-1.25 meters；
(5) the PET hyaline membranes one for the film square piece for obtaining step (4) are placed upwardly, with high-precision film cutting machine to each thin
The PET hyaline membranes of film square piece carry out trimming processing, and then by film square piece turn-over, PET black films are entered again with high-precision film cutting machine
Row trimming is handled, and the removed width of the PET hyaline membranes and PET black films is 0.1-5 centimetres during trimming, to draw circuit；
(6) non-woven fabrics soaked with ethanol at the trimming of film square piece to cleaning, until liquid crystal/polymer/interval microballoon
Untill composite bed is cleaned out with PVA insulation oriented layer, to draw circuit；
(7) 5-10 points are stood after the completion of sealing glue, smearing is uniformly smeared made from step (6) at the trimming of film square piece
Clock, producing the present invention has the liquid crystal laminated film of writing display function.
6. the preparation method of the liquid crystal laminated film according to claim 5 with writing display function, it is characterized in that：Institute
The preparation method of PVA insulation oriented layers is stated, is comprised the following steps：
A certain amount of PVA is dissolved into 90 DEG C -100 DEG C of hot water by (2-1), is heated 4-7 hours, and preparation mass concentration is 1%-
The 20% PVA aqueous solution；
The PVA aqueous solution that step (1) is prepared is coated uniformly on the ITO layer of PET black films upper surface by being coated with dryer by (2-2)
Surface, the thickness of final PVA insulating barriers is controlled by controlling PVA aqueous coatings thickness and concentration；After the completion of coating, feeding
Vacuum heating apparatus is dried 1-120 minutes under 80-100 DEG C of vacuum condition；
(2-3) carries out orientation process by friction orientation equipment to PVA surface of insulating layer so that PVA surfaces form parallel channel,
Rate of orientation is 1-5 ms/min, orientation number of times 1-5 times, produces PVA insulation oriented layers.
7. the preparation method of the liquid crystal laminated film according to claim 5 with writing display function, it is characterized in that：Institute
The preparation method of liquid crystal/polymer/interval microballoon composite bed is stated, is comprised the following steps：
PET black films upper surface will be injected by full-automatic laminating machine after liquid crystal/polymer/interval microballoon composite bed each component mixture
PVA insulation oriented layer and PET hyaline membrane lower surfaces ITO layer between, and through ultraviolet light solidify equipment utilization ultraviolet light
Generation polymerisation solidify afterwards are molded, and form liquid crystal/polymer/interval microballoon composite bed.
8. the preparation method of the liquid crystal laminated film according to claim 6 with writing display function, it is characterized in that：Step
Suddenly the specific method for controlling the thickness of final PVA insulating barriers in (2) by controlling PVA aqueous coatings thickness and concentration is：
It is 10-100 microns to control PVA aqueous coatings thickness, and film speed is 1-5 ms/min.
9. the preparation method of the liquid crystal laminated film according to claim 7 with writing display function, it is characterized in that：Institute
The compounding method for stating liquid crystal/polymer/interval microballoon composite bed each component is：Liquid crystal polymer each component is blended in proportion
Together, mixed 1-10 minutes in 60-80 DEG C of ultrasonic water bath, then take out and vibrated 1-10 minutes on shaker.
10. the preparation method of the liquid crystal laminated film according to claim 7 with writing display function, it is characterized in that：
Wherein, a length of 365 nanometers of the ultraviolet light wave of ultraviolet light, aggregate power is 1-10 milliwatts/square centimeter, and polymerization time is 1-
60 minutes, speed of production was 0.5-5 ms/min.
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