CN107085327A - A kind of electric-controlled light-regulating film based on liquid crystal and two tropism dyestuffs and preparation method thereof - Google Patents
A kind of electric-controlled light-regulating film based on liquid crystal and two tropism dyestuffs and preparation method thereof Download PDFInfo
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- CN107085327A CN107085327A CN201710456245.9A CN201710456245A CN107085327A CN 107085327 A CN107085327 A CN 107085327A CN 201710456245 A CN201710456245 A CN 201710456245A CN 107085327 A CN107085327 A CN 107085327A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—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
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13731—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a field-induced phase transition
- G02F1/13737—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a field-induced phase transition in liquid crystals doped with a pleochroic dye
-
- 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
- G02F1/13345—Network or three-dimensional gels
Abstract
The present invention relates to a kind of electric-controlled light-regulating film based on liquid crystal and two tropism dyestuffs, including：First transparent indium tin oxide Plastic conductive film layer, composite film layer, the second transparent indium tin oxide Plastic conductive film layer；Wherein, the composite film layer includes liquid crystal molecule, two tropism dye molecules, macromolecule network, wherein, liquid crystal molecule and two tropism dye molecules are collectively forming the first composite regions, liquid crystal molecule, the second composite regions of two tropism dye molecules and macromolecule network formation, first composite regions are periodically alternately arranged with the second composite regions in composite film layer along incident light vertical direction.The electric-controlled light-regulating film of the present invention has the regulatable feature of transmitted light angular range.The electric-controlled light-regulating film is expected to be applied to display, by the opening and closing of electric field, display is switched between peep-proof and non-peep-proof state.
Description
Technical field
The present invention relates to optics polarization light technology field, more particularly to a kind of electric-controlled light-regulating based on liquid crystal and two tropism dyestuffs
Film and preparation method thereof.
Background technology
Nowadays, electronic product has been incorporated in the live and work of people, and provide for people it is many convenient, but by
It is larger in the visible angle of LCDs, when the information of electronic product is being browsed by user, also easily by side
People peep, for some commercially with the information such as military secrecy and individual privacy, people are more undesirable, and by side, other people peep.
Minnesota Mining and Manufacturing Company takes the lead in developing the peep-proof film with ultra tiny shutter (MICROLOUVER) structure.Fig. 1 is this
The principle schematic of peep-proof film, as illustrated, the peep-proof film includes successively in accordance with the order from top to bottom：Pet layer, adhesive layer,
Ultra micro shutter film layer, adhesive layer, pet layer, adhesive layer, protective layer.Due to the ultra micro shutter film layer in the peep-proof membrane structure,
So that when the peep-proof film is used for into display, the data that can go out screen display specializes in the reading of user front, viewing area
It is 60 degree (± 30 degree), anyone can only see pitch-dark picture outside viewing area, so as to reach protection individual privacy and enterprise
The purpose of trade secret.But the peep-proof film does not possess the characteristic switched between peep-proof and non-peep-proof state.
The content of the invention
It is an object of the invention to overcome the defect that existing peep-proof film can not switch between peep-proof and non-peep-proof state,
So as to provide a kind of peep-proof state can automatically controlled regulation light modulation film.
To achieve these goals, the invention provides a kind of electric-controlled light-regulating film based on liquid crystal and two tropism dyestuffs, bag
Include：First transparent indium tin oxide Plastic conductive film layer, composite film layer, the second transparent indium tin oxide Plastic conductive film layer；Its
In, the composite film layer include liquid crystal molecule, two tropism dye molecules, macromolecule network, wherein, liquid crystal molecule and two to
Property dye molecule is collectively forming the first composite regions, liquid crystal molecule, two tropism dye molecules and the common shape of macromolecule network
Into the second composite regions, first composite regions and the second composite regions in composite film layer along
Incident light vertical direction is periodically alternately arranged.
In above-mentioned technical proposal, the width range of any first composite regions is between 10-80 μm, and any second answers
The width range of material area is between 10-80 μm.
In above-mentioned technical proposal, the macromolecule network is under ultraviolet light, by triggering photopolymerizable monomer to occur
Polymerisation and formed；Wherein, the photopolymerizable monomer is：Simple function group either multi-functional liquid crystal liquid crystal property monomer or
The mixture of plurality of liquid crystals monomer, or liquid crystal liquid crystal property monomer and the mixture of non-liquid crystal monomer；The photopolymerizable monomer
Content is the 10-70wt% of mixed liquor total content.
In above-mentioned technical proposal, the two tropisms dyestuff is red using the tropism black dyes of positivity two, or the tropism of positivity two
The mixture of color dyestuff, the tropism blue dyes of positivity two and the tropism weld of positivity two.
In above-mentioned technical proposal, the liquid crystal selects nematic liquid crystal or cholesteric liquid crystal.
In above-mentioned technical proposal, the thickness of the composite film layer between 5-50 μm, the composite film layer
Thickness is determined by the size of spacer particle；The spacer particle selects the glass microballoon of certain size, and content contaminates for two tropisms
Expect molecule, photopolymerizable monomer, liquid crystal molecule, light trigger, the 0.1-1.0wt% of the mixed liquor total content of spacer particle.
In above-mentioned technical proposal, the electric-controlled light-regulating film, when light is incident, transmits light distribution in when being not added with electricity condition
In a wider angular range；When the electric-controlled light-regulating film is in powering state, when light is incident, light distribution is transmitted
In a narrower angular range.
Present invention also offers a kind of display, the display, as display screen, passes through electricity using the electric-controlled light-regulating film
The opening and closing of field, display is switched between peep-proof and non-peep-proof state.
Present invention also offers the preparation method of electric-controlled light-regulating film, including：
Step 1), prepare the transparent indium tin oxide Plastic conductive film layer that has been orientated；
Step 2), photopolymerizable monomer, liquid crystal molecule, two tropism dye molecules, light trigger, spacer particle mixed equal
After even, mixed liquor is clipped in the middle of two layers of transparent indium tin oxide Plastic conductive film layer, film is then made；
Step 3), the film irradiated by using UV light permeability mask, can gather through the ultraviolet light-initiated light of mask
Reaction, which is crosslinked, between conjunction monomer molecule forms macromolecule network, liquid crystal molecule, two tropism dye molecule composite regions, and
Shielded part forms liquid crystal molecule, two tropism dye molecule composite regions, so as to be formed along incident light vertical direction
The structure being periodically alternately arranged.
The advantage of the invention is that：
The electric-controlled light-regulating film peep-proof excellent performance of the present invention and automatically controlled it can adjust, preparation method is simple, and personal in protection
While privacy Considerable effect, light transmittance will not be affected.
Brief description of the drawings
Fig. 1 is the structural representation of the peep-proof film with ultra tiny shutter of Minnesota Mining and Manufacturing Company's exploitation；
Fig. 2 is the light absorbs schematic diagram of the tropism dyestuff of positivity two；
Fig. 3 (a) is the schematic diagram that film resulting during electric-controlled light-regulating film is prepared in embodiment 1；
Fig. 3 (b) is the schematic diagram for irradiating film shown in Fig. 3 (a) in embodiment 1 using UV light permeability mask；
Fig. 3 (c) is that prepared electric-controlled light-regulating film in embodiment 1 is being not powered on the state diagram of pressure；
Fig. 3 (d) is state diagram of the prepared electric-controlled light-regulating film in embodiment 1 under making alive；
Fig. 4 (a) is the schematic diagram that film resulting during electric-controlled light-regulating film is prepared in embodiment 2；
Fig. 4 (b) is the schematic diagram for irradiating film shown in Fig. 4 (a) in embodiment 2 using UV light permeability mask；
Fig. 4 (c) is that prepared electric-controlled light-regulating film in embodiment 2 is being not powered on the state diagram of pressure；
Fig. 4 (d) is state diagram of the prepared electric-controlled light-regulating film in embodiment 2 under making alive；
Fig. 5 (a) is the petrographic microscope figure in the case where being not added with electricity condition of prepared electric-controlled light-regulating film in embodiment 2；
Fig. 5 (b) is the petrographic microscope figure in the power-on state of prepared electric-controlled light-regulating film in embodiment 1；
Fig. 6 (a) is the petrographic microscope figure in the case where being not added with electricity condition of prepared electric-controlled light-regulating film in embodiment 2；
Fig. 6 (b) is the petrographic microscope figure in the power-on state of prepared electric-controlled light-regulating film in embodiment 2；
Fig. 7 is that prepared electric-controlled light-regulating film in embodiment 1 is not added with electricity condition (in figure shown in lines 1) and powering state
Angle-the surface of intensity distribution of (in figure shown in lines 2)；
Fig. 8 is that prepared electric-controlled light-regulating film in embodiment 2 is not added with electricity condition (in figure shown in lines 1) and powering state
Angle-the surface of intensity distribution of (in figure shown in lines 2).
Embodiment
In conjunction with accompanying drawing, the invention will be further described.
The electric-controlled light-regulating film of the present invention includes successively from top to bottom：First transparent indium tin oxide (ITO) Plastic conductive film layer,
Composite film layer, the second transparent indium tin oxide Plastic conductive film layer；Wherein, described composite film layer includes liquid crystal point
Son, two tropism dye molecules, macromolecule network, wherein, liquid crystal molecule and two tropism dye molecules are collectively forming the first composite wood
Expect region, liquid crystal molecule, two tropism dye molecules and macromolecule network are collectively forming the second composite regions, and described first answers
Material area is periodically alternately arranged with the second composite regions in composite film layer along incident light vertical direction.
The width range of any first composite regions is between 10-80 μm, and the width range of any second composite regions exists
Between 10-80 μm.
The macromolecule network is under conditions of UV irradiations, by triggering photopolymerizable monomer to occur polymerisation and shape
Into.The photopolymerizable monomer can select simple function group either multi-functional liquid crystal liquid crystal property monomer or plurality of liquid crystals list
The mixture of body, or liquid crystal liquid crystal property monomer and the mixture of non-liquid crystal monomer.Photopolymerizable content of monomer is generally mixed liquor
The 10-70wt% of total content.Light trigger typically from Irgacure651, Irgacure184, Irgacure1173,
One kind in Irgacure127, Irgacure2959, Irgacure784, Irgacure2022.Photoinitiator levels are poly- for light
Close the 0.5-10wt% of content of monomer.
The two tropisms dyestuff should use the tropism black dyes of positivity two, or the tropism orchil of positivity two, positivity
The mixture of two tropism blue dyes and the tropism weld of positivity two, specifically can select azo, Anthraquinones or other be applicable
Two tropism dyestuffs.Fig. 2 is that the lines 1 in the light absorbs schematic diagram of the tropism dyestuff of positivity two, figure represent the tropism dyestuff of positivity two
With absorptivity of light vector when parallel, lines 2 represent absorptivity of the tropism dyestuff of positivity two with light vector when vertical, the table of lines 3
Show absorptivity of the tropism dyestuff of positivity two under non-polarized light.It can be seen that the tropism dyestuff of positivity two is put down with light vector
Absorptivity during row and the tropism dyestuff of positivity two and light vector have obvious difference compared with absorptivity when vertical.
The liquid crystal can select nematic liquid crystal (NLC) or cholesteric liquid crystal (N*LC).The business of positivity may be selected in NLC liquid crystal
With product or voluntarily synthesize, one or more of mixing in such as E7, E8,5CB, SLC1717, SLC09535, SLC7011-100
Thing.N*LC may be selected commercial product or voluntarily synthesis or be prepared from chipal compounds incorporation NLC.Chipal compounds are optional
With commercial product or voluntarily synthesize.Common chipal compounds commercial product has：S811, CB15, R1011, R5011 etc..
The thickness of the composite film layer can be controlled multiple between 5-50 μm by the size of control interval particle
The thickness of condensation material film layer.Spacer particle selects the glass microballoon of certain size, and content is two tropism dye molecules, photopolymerizable
Monomer, liquid crystal molecule, light trigger, the 0.1-1.0wt% of the mixed liquor total content of spacer particle.
NLC and N*LC will be selected respectively as liquid crystal molecule material, with regard to how to prepare the present invention in the following embodiments
The process of electric-controlled light-regulating film illustrate.
Embodiment 1
First, the pet substrate for being coated with ito film is cleaned after one time with detergent and warm water, by the particle dust of pet substrate
Remove, then cleaned with acetone soln, one layer of PVA alignment agent of spin coating, high temperature on the pet substrate for be coated with ito film with impurity
(110 DEG C) solidification 2h, and carry out friction orientation.Then, by photo-polymerizable liquid crystal monomer, DD molecules, NLC molecules, light trigger,
After spacer particle is well mixed, mixed liquor is clipped in the middle of two layers of transparent ITO Plastic conductives film, is then pressed into pressure roller method thin
Film, now as shown in Fig. 3 (a).Then, as shown in Fig. 3 (b), film is irradiated through mask by using ultraviolet (UV) light, passed through
Crosslinked between the ultraviolet light-initiated photopolymerizable monomer molecule of mask reaction formed photo-polymerizable liquid crystal network, NLC, DD be combined
Material area, and shielded part forms NLC, DD composite regions, material is thus formed all along incident light vertical direction
The structure that phase property is alternately arranged.
When the electric-controlled light-regulating film prepared by the above method is not powered on pressure, shown in such as Fig. 3 (c), NLC molecules are in flat
Face state, according to guest-host effect, DD molecules are also planar orientation.Now the light absorbs direction of DD molecules is vertical with incident light direction,
Therefore weaker to absorbing incident light, transmitted light is distributed in-α1~+α1Wider angular range in.When electric-controlled light-regulating film is plus electricity
After, such as shown in Fig. 3 (d), plane state is anchored at by the DD molecules in a part of region of photo-polymerizable liquid crystal network anchor, not
Another region DD molecules being anchored are vertical orientated along the direction of electric field with NLC molecules, and transmitted light can only be distributed in-α2~
+α2Relative narrow-angle in the range of.
Embodiment 2
First, the pet substrate for being coated with ito film is cleaned after one time with detergent and warm water, by the particle dust of pet substrate
Remove, then cleaned with acetone soln, one layer of PVA alignment agent of spin coating, high temperature on the pet substrate for be coated with ito film with impurity
(110 DEG C) solidification 2h, then carry out friction orientation.Then, by photo-polymerizable liquid crystal monomer, DD molecules, N*LC molecules, light-initiated
After agent, spacer particle are well mixed, mixed liquor is clipped in the middle of two layers of transparent ITO Plastic conductives film, is then pressed into pressure roller method
Film, now as shown in Fig. 4 (a).Then, as shown in Fig. 4 (b), film is irradiated through mask by using ultraviolet (UV) light, thoroughly
Reaction, which is crosslinked, between the ultraviolet light-initiated photo-polymerizable liquid crystal monomer molecule for crossing mask forms photo-polymerizable liquid crystal network, N*
LC, DD composite regions, and shielded part forms N*LC, DD composite regions, material is thus formed along incident light
The structure that vertical direction is periodically alternately arranged.
When the electric-controlled light-regulating film prepared by the above method is not powered on pressure, shown in such as Fig. 4 (c), N*LC molecules are in
Plane state, according to guest-host effect, DD molecules are also planar orientation.Now the light absorbs direction of DD molecules is hung down with incident light direction
Directly, it is presented weaker to absorbing incident light, transmitted ray is distributed in-α3~+α3Wider angular range in.When electric-controlled light-regulating film
After electric field, such as shown in Fig. 4 (d), it is anchored at by the DD molecules in a part of region of photo-polymerizable liquid crystal network anchor flat
Face state, direction of the DD molecules that another part region is not anchored with N*LC along electric field is orientated, and forms Focal conic state, now DD
The orientation of molecule is random.In the power-on state, the composite film layer formation in light modulation film has similar ultra micro shutter
Structure, transmitted light can only be distributed in-α4~+α4Narrower angular range in.
Fig. 5 (a) is the petrographic microscope figure in the case where being not added with electricity condition of prepared electric-controlled light-regulating film in embodiment 1, Fig. 5
(b) be prepared electric-controlled light-regulating film in embodiment 1 petrographic microscope figure in the power-on state.Fig. 6 (a) is embodiment 2
In prepared electric-controlled light-regulating film the petrographic microscope figure in the case where being not added with electricity condition, Fig. 6 (b) is prepared in embodiment 2
The petrographic microscope figure in the power-on state of electric-controlled light-regulating film.From these petrographic microscope it can be seen from the figure thats, electric-controlled light-regulating
Film has periodic striated structure.
Fig. 7 is that prepared electric-controlled light-regulating film in embodiment 1 is not added with electricity condition (in figure shown in lines 1) and powering state
Angle-the surface of intensity distribution of (in figure shown in lines 2).Fig. 8 is that prepared electric-controlled light-regulating film in embodiment 2 is not added with electricity condition
Angle-surface of intensity distribution of (in figure shown in lines 1) and powering state (in figure shown in lines 2).It can be seen that from the two figures
Embodiment 1 is with the electric-controlled light-regulating film prepared by embodiment 2 under powered or non-powered state, and visual angle has significant change, reaches
The purpose that switches between peep-proof and non-peep-proof state.
The guest-host effect property of electric-controlled light-regulating film application liquid crystal proposed by the present invention and two tropism dyestuffs, is applying electric field
In the case of, the user of LCDs can be made to be read from 60 degree of front visual angles, i.e., or so beyond 30 degree in any direction on see
The data of unclear screen, protection trade secret and individual privacy so that the use of computer is more leisurely and carefree.
Based on above-mentioned electric-controlled light-regulating film, present invention also offers a kind of display, the display can using foregoing visual angle
The electric-controlled light-regulating film of regulation and control is as display screen, and by the opening and closing of electric field, display is between peep-proof and non-peep-proof state
Switch over.
It should be noted last that, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (9)
1. a kind of electric-controlled light-regulating film based on liquid crystal and two tropism dyestuffs, it is characterised in that including：First transparent indium tin oxide is moulded
Expect conductive film layer, composite film layer, the second transparent indium tin oxide Plastic conductive film layer；Wherein, the composite film layer bag
Liquid crystal molecule, two tropism dye molecules, macromolecule network are included, wherein, liquid crystal molecule and two tropism dye molecules are collectively forming
One composite regions, liquid crystal molecule, two tropism dye molecules and macromolecule network are collectively forming the second composite regions, institute
The first composite regions and the second composite regions are stated in composite film layer along incident light vertical direction periodicity
It is alternately arranged.
2. the electric-controlled light-regulating film according to claim 1 based on liquid crystal and two tropism dyestuffs, it is characterised in that any first
The width range of composite regions between 10-80 μm, the width ranges of any second composite regions 10-80 μm it
Between.
3. the electric-controlled light-regulating film according to claim 1 based on liquid crystal and two tropism dyestuffs, it is characterised in that the high score
Sub-network is formed under ultraviolet light by triggering photopolymerizable monomer to occur polymerisation；Wherein, the photopolymerizable
Monomer is：The mixture of simple function group either multi-functional liquid crystal liquid crystal property monomer or plurality of liquid crystals monomer, or liquid crystal liquid crystal property
The mixture of monomer and non-liquid crystal monomer；The photopolymerizable content of monomer is the 10-70wt% of mixed liquor total content.
4. the electric-controlled light-regulating film according to claim 1 based on liquid crystal and two tropism dyestuffs, it is characterised in that described two to
Property dyestuff use the tropism black dyes of positivity two, or the tropism orchil of positivity two, the tropism blue dyes of positivity two and positivity
The mixture of two tropism welds.
5. the electric-controlled light-regulating film according to claim 1 based on liquid crystal and two tropism dyestuffs, it is characterised in that the liquid crystal
From nematic liquid crystal or cholesteric liquid crystal.
6. the electric-controlled light-regulating film according to claim 1 based on liquid crystal and two tropism dyestuffs, it is characterised in that described compound
The thickness of film layer is between 5-50 μm, and the thickness of the composite film layer is determined by the size of spacer particle；It is described
Spacer particle selects the glass microballoon of certain size, and content is two tropism dye molecules, photopolymerizable monomer, liquid crystal molecule, light
The 0.1-1.0wt% of initiator, the mixed liquor total content of spacer particle.
7. the electric-controlled light-regulating film according to claim 1 based on liquid crystal and two tropism dyestuffs, it is characterised in that described automatically controlled
Light modulation film is in when being not added with electricity condition, and when light is incident, transmitted light is distributed in a wider angular range；When the electricity
When controlled dimming film is in powering state, when light is incident, transmitted light is distributed in a narrower angular range.
8. a kind of display, it is characterised in that the display is using one of claim 1-7 electric-controlled light-regulating film as aobvious
Display screen, by the opening and closing of electric field, display is switched between peep-proof and non-peep-proof state.
9. the preparation method of one of claim 1-7 electric-controlled light-regulating film, including：
Step 1), prepare the transparent indium tin oxide Plastic conductive film layer that has been orientated；
Step 2), photopolymerizable monomer, liquid crystal molecule, two tropism dye molecules, light trigger, spacer particle be well mixed
Afterwards, mixed liquor is clipped in the middle of two layers of transparent indium tin oxide Plastic conductive film layer, film is then made；
Step 3), the film irradiated by using UV light permeability mask, through the ultraviolet light-initiated photopolymerizable list of mask
Body is intermolecular to be crosslinked reaction and forms macromolecule network, liquid crystal molecule, two tropism dye molecule composite regions, and is hidden
Cover part and form liquid crystal molecule, two tropism dye molecule composite regions, so as to be formed along the incident light vertical direction cycle
The structure that property is alternately arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456245.9A CN107085327B (en) | 2017-06-16 | 2017-06-16 | A kind of electric-controlled light-regulating film and preparation method thereof based on liquid crystal and two tropism dyestuffs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456245.9A CN107085327B (en) | 2017-06-16 | 2017-06-16 | A kind of electric-controlled light-regulating film and preparation method thereof based on liquid crystal and two tropism dyestuffs |
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