CN106125386B - Polymer dispersed liquid-crystal film and preparation and control method, display panel and device - Google Patents
Polymer dispersed liquid-crystal film and preparation and control method, display panel and device Download PDFInfo
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- CN106125386B CN106125386B CN201610480262.1A CN201610480262A CN106125386B CN 106125386 B CN106125386 B CN 106125386B CN 201610480262 A CN201610480262 A CN 201610480262A CN 106125386 B CN106125386 B CN 106125386B
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/542—Macromolecular compounds
- C09K19/544—Macromolecular compounds as dispersing or encapsulating medium around the liquid crystal
Abstract
The present invention provides a kind of polymer dispersed liquid-crystal film and preparation and control method, display panel and device, belongs to field of display technology, can solve the problems, such as that existing PDLC film is unable to maintain that it in present condition after removing the electric field being applied on PDLC film.Polymer dispersed liquid-crystal film of the invention, comprising: smectic liquid crystal and epoxide resin polymer, include ion in the epoxide resin polymer, and the smectic liquid crystal is dispersed in the epoxide resin polymer.
Description
Technical field
The invention belongs to field of display technology, and in particular to a kind of polymer dispersed liquid-crystal film and preparation and controlling party
Method, display panel and device.
Background technique
Currently, polymer dispersed liquid crystals (Polymer Dispersed Liquid Crystal, PDLC) film is that will have
There is the liquid crystal droplet of birefringence to be dispersed in the composite material formed in continuous polymeric matrix.
PDLC film can be applied in display device, when not applying electric field to PDLC film, polymer dispersed liquid crystals
Director random distribution, the effective refractive index due to light by liquid crystal droplet are mismatched with the refractive index by polymeric matrix,
Multiple reflections and refraction occur on the interface of liquid crystal and polymer for light, and PDLC film scatters incident light strongly and is creamy white
Opaque state；When applying sufficiently strong electric field to PDLC film, the director of liquid crystal droplet is arranged along direction of an electric field, if
The ordinary index of refraction of the liquid crystal of selection and the index matching of polymer, light is directed through PDLC film, and transparent state is presented；
The electric field applied is removed, liquid crystal particle is restored to initial scattering state under the action of base elastomer energy again, i.e., in opaque
State.That is, although PDLC film may be implemented, state is controllable, its pellucidity, which needs to apply electric field, to be maintained.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, proposing one kind can apply in removing
Remain to maintain after the electric field being added on PDLC film its in the polymer dispersed liquid-crystal film of present condition and preparation and control method,
Display panel and device.
Solving technical solution used by present invention problem is a kind of polymer dispersed liquid-crystal film, comprising: smectic
Phase liquid crystal and epoxide resin polymer, include ion in the epoxide resin polymer, and the smectic liquid crystal is dispersed in described
In epoxide resin polymer.
Wherein, the epoxide resin polymer is glycidyl ether type epoxy resinous polymer.
Wherein, the epoxide resin polymer is polymerize in the presence of photoinitiator and light radiation by epoxy monomer
Reaction generates.
Wherein, the photoinitiator includes diaryl iodonium salt and triaryl sulfonium salts.
Wherein, the smectic liquid crystal, the epoxy monomer and the photoinitiator mass percent are as follows:
40~80wt% of smectic liquid crystal；
29~60wt% of epoxy monomer；
1~10wt% of photoinitiator.
Wherein, the polymer dispersed liquid-crystal film further include: the first flexible substrates being oppositely arranged and the second flexible base
Bottom close to the first conductive layer of the side of second flexible substrates and is located at described second soft positioned at first flexible substrates
Second conductive layer of the property substrate close to the side of first flexible substrates, the epoxide resin polymer and the smectic phase liquid
Crystalline substance is between first conductive layer and second conductive layer.
It is described poly- the present invention also provides a kind of preparation method of polymer dispersed liquid-crystal film as another technical solution
Closing object dispersed liquid-crystal film is polymer dispersed liquid-crystal film described in above-mentioned any one, and the preparation method includes:
Smectic liquid crystal and epoxy monomer are mixed；
The epoxy monomer polymerization generates epoxide resin polymer；
It wherein, include ion in the epoxide resin polymer, it is poly- that the smectic liquid crystal is dispersed in the epoxy resin
It closes in object.
Wherein, described mix smectic liquid crystal and epoxy monomer includes:
Smectic liquid crystal, epoxy monomer and photoinitiator are mixed；
The epoxy monomer polymerization generates epoxide resin polymer and includes:
Polymerization reaction occurs in the presence of photoinitiator and light radiation and generates epoxide resin polymer for epoxy monomer.
Wherein, polymerization reaction generation epoxy resin occurs in the presence of photoinitiator and light radiation for the epoxy monomer
The reaction temperature of polymer is 20~60 DEG C, and the light radiation time is 15~80min.
As another technical solution, the present invention also provides a kind of control methods of polymer dispersed liquid-crystal film, comprising:
Transparent state controls the stage: Xiang Suoshu polymer dispersed liquid-crystal film applies DC electric field or high-frequency electric field, described poly-
Close the transparent state of object dispersed liquid-crystal film；
Remove the DC electric field or high-frequency electric field, the polymer dispersed liquid-crystal film maintains the transparent state；
Nontransparent state controls the stage: Xiang Suoshu polymer dispersed liquid-crystal film applies low frequency electric field, the polymer dispersion
Liquid crystal film is in nontransparent state；
Remove the low frequency electric field, the polymer dispersed liquid-crystal film maintains the nontransparent state.
As another technical solution, the present invention also provides a kind of display panels, comprising: polymerization described in above-mentioned any one
Object dispersed liquid-crystal film.
As another technical solution, the present invention also provides a kind of display devices, comprising: above-mentioned display panel.
In polymer dispersed liquid-crystal film and preparation and control method, display panel and device of the invention, the polymer
Dispersed liquid-crystal film includes: smectic liquid crystal and epoxide resin polymer, includes ion, smectic phase liquid in epoxide resin polymer
Crystalline substance is dispersed in epoxide resin polymer, due to smectic liquid crystal compared with the existing technology in common nematic liquid crystal there is phase
To higher viscosity, and in epoxide resin polymer include ion, by by smectic phase dispersed liquid crystal in epoxide resin polymer
In, can terminate to polymer dispersed liquid-crystal film be powered after, make polymer dispersed liquid-crystal film still maintains energization when
State is maintained without external force, to realize two-state control, and then reaches energy-efficient purpose.
Polymer dispersed liquid-crystal film of the invention can be used in Flexible Displays, intelligent glass and its related fields.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the polymer dispersed liquid-crystal film of the embodiment of the present invention 1；
Fig. 2 is the polymerization process figure of the epoxide resin polymer of Fig. 1；
Fig. 3 is the flow diagram of the preparation method of the polymer dispersed liquid-crystal film of the embodiment of the present invention 2；
Fig. 4 is a kind of polymer of state of the control method of the polymer dispersed liquid-crystal film of the embodiment of the present invention 3
The schematic diagram of dispersed liquid-crystal film；
Fig. 5 is the polymerization of another state of the control method of the polymer dispersed liquid-crystal film of the embodiment of the present invention 3
The schematic diagram of object dispersed liquid-crystal film；
Fig. 6 is that the polymer dispersed liquid crystals of the control method of the polymer dispersed liquid-crystal film of the embodiment of the present invention 3 is thin
Voltage-transmittance curve of film；
Wherein, appended drawing reference are as follows: 1, smectic liquid crystal；2, epoxide resin polymer；3, the first flexible substrates；4, second is soft
Property substrate；5, the first conductive layer；6, the second conductive layer.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Present invention is further described in detail for formula.
Embodiment 1:
Fig. 1 is please referred to, the present embodiment provides a kind of polymer dispersed liquid-crystal films, comprising: smectic liquid crystal 1 and asphalt mixtures modified by epoxy resin
Lipopolymer 2, includes ion in epoxide resin polymer 2, and smectic liquid crystal 1 is dispersed in epoxide resin polymer 2.
Wherein, polymer dispersed liquid-crystal film further include: the first flexible substrates 3 and the second flexible substrates 4 that are oppositely arranged,
It is close close to the first conductive layer 5 of the side of the second flexible substrates 4 and positioned at the second flexible substrates 4 positioned at the first flexible substrates 3
Second conductive layer 6 of the side of the first flexible substrates 3, epoxide resin polymer 2 and smectic liquid crystal 1 are located at the first conductive layer 5
And second between conductive layer 6.
From figure 1 it appears that the first flexible substrates 3 and the second flexible substrates 4 are oppositely arranged, in the first flexible substrates 3
It is respectively arranged with the first conductive layer 5 and the second conductive layer 6 with the inside of the second flexible substrates 4, i.e. the first conductive layer 5 and second is led
Electric layer 6 is also to be oppositely arranged, and epoxide resin polymer 2 and smectic liquid crystal 1 are located at the first conductive layer 5 and the second conductive layer 6
Between, therefore, charged ion and smectic when applying voltage to polymer dispersed liquid-crystal film, in epoxide resin polymer 2
Phase liquid crystal 1 can be moved between the first conductive layer 5 and the second conductive layer 6 according to the type of the voltage of application.
Why epoxide resin polymer 2 and smectic liquid crystal 1 are set between the first conductive layer 5 and the second conductive layer 6,
Be due to smectic liquid crystal 1 compared with the existing technology in common nematic liquid crystal there is relatively high viscosity (to be able to maintain that
A certain state), and include ion (can be moved under electric field action) in epoxide resin polymer 2, by by smectic liquid crystal 1
It is dispersed in epoxide resin polymer 2, polymer dispersed liquid crystals can be made after terminating to be powered to polymer dispersed liquid-crystal film
Film still maintains state when being powered, and is maintained without external force.
It should be noted that the first flexible substrates 3 and the second flexible substrates 4 use polyethylene terephthalate
(PET), polyimides (PI) or polyethylene naphthalate (PEN) are made, and the first conductive layer 5 and the second conductive layer 6 can be adopted
It is made of ITO or IZO.Certainly, the material for preparing two sheets of flexible substrate and two conductive layers does not limit to and this, can also use
Prepared by other materials, details are not described herein.
Wherein, epoxide resin polymer 2 is glycidyl ether type epoxy resinous polymer.
Why so set, being the glycidyl ether type epoxy due to generating glycidyl ether type epoxy resinous polymer
The polymerization speed of resin monomer is relatively fast, and polymerization is good, and glycidyl ether type epoxy resin monomer and smectic liquid crystal 1
Solubility is good before the reaction.
Wherein, polymerization is occurred by epoxy monomer in the presence of photoinitiator and light radiation for epoxide resin polymer 2 anti-
It should generate.
In the prior art, the mode for generalling use heat cure prepares epoxide resin polymer, in this case, generates
Epoxide resin polymer in there is no remaining ions in polymerization process；And the present embodiment prepares ring by the way of photopolymerization
Oxygen resinous polymer, in this case, can remain in the epoxide resin polymer 2 of generation generated in polymerization process from
Son.Due in epoxide resin polymer 2 there are ion, when applying voltage to polymer dispersed liquid-crystal film, epoxy
Molecule in resinous polymer 2 with different ions can be under electric field action, between the first conductive layer 5 and the second conductive layer 6
Moved in smectic liquid crystal 1 so that polymer dispersed liquid-crystal film present different conditions and after removing the electric field still
Maintain the state.
Wherein, photoinitiator includes diaryl iodonium salt and triaryl sulfonium salts.
The photoinitiator that the present embodiment uses can cause epoxy resin by ultraviolet radiation for cation light initiator
Polymerization crosslinking occurs for monomer has some ions to remain in PDLC film when polymerization was complete, these ions cause smectic phase liquid
Brilliant dynamic scattering performance realizes that smectic phase PDLC film transmission state (applying direct current or high-frequency electric field) and scattering states (apply low frequency
Electric field) between conversion.Certainly, the type of photoinitiator is not limited thereto, and can also use other kinds of photoinitiator,
As long as can make epoxy monomer that cationic polymerization occur generates epoxide resin polymer 2, details are not described herein.
Wherein, the mass percent of smectic liquid crystal 1, epoxy monomer and photoinitiator are as follows:
40~80wt% of smectic liquid crystal；
29~60wt% of epoxy monomer；
1~10wt% of photoinitiator.
Why aforementioned proportion is selected to be prepared, is the polymer dispersed liquid-crystal film due to being prepared with the ratio, no
It needs excessively high voltage i.e. and its state can be changed, therefore, driving voltage appropriate can be obtained.Certainly, smectic liquid crystal, epoxy
The mass percent of resin monomer and photoinitiator is not limited thereto, and can also be prepared using other mass percents,
Details are not described herein.
The present embodiment can specifically:
Photoinitiator is triaryl sulfonium salts (Ar3S+SbF6 -)；
The structure of epoxy monomer is
The polymerization reaction of epoxide resin polymer 2 can be as shown in Figure 2.
The polymer dispersed liquid-crystal film of the present embodiment, comprising: smectic liquid crystal 1 and epoxide resin polymer 2, asphalt mixtures modified by epoxy resin
Include ion in lipopolymer 2, smectic liquid crystal 1 is dispersed in epoxide resin polymer 2, due to smectic liquid crystal 1 relative to
Nematic liquid crystal commonly used in the prior art has relatively high viscosity, and poly- containing cation in epoxide resin polymer 2
The charged ion generated is closed, by the way that smectic liquid crystal 1 to be dispersed in epoxide resin polymer 2, can terminated to polymer
After dispersed liquid-crystal film is powered, polymer dispersed liquid-crystal film is made still to maintain state when being powered, is carried out without external force
It maintains, to realize two-state control, and then reaches energy-efficient purpose.
Embodiment 2:
Referring to figure 3., the present embodiment provides a kind of preparation methods of polymer dispersed liquid-crystal film, comprising:
Step 101, smectic liquid crystal 1 and epoxy monomer are mixed.
Specifically, smectic liquid crystal 1, epoxy monomer and photoinitiator are mixed.
Step 102, epoxy monomer polymerization generates epoxide resin polymer 2；Wherein, it is wrapped in epoxide resin polymer 2
Ion is included, smectic liquid crystal 1 is dispersed in epoxide resin polymer 2.
Specifically, polymerization reaction generation epoxy resin occurs in the presence of photoinitiator and light radiation for epoxy monomer poly-
Close object.
It should be noted that being mixed according to a certain percentage by smectic liquid crystal 1, epoxy monomer and photoinitiator
To after mixture, said mixture is placed in 5 He of the first conductive layer by modes such as roll-to-roll (Roll to Roll) or spin coatings
Between second conductive layer 6, so that epoxy monomer is polymerize between the first conductive layer 5 and the second conductive layer 6, tool is generated
There is the epoxide resin polymer 2 of ion.
Wherein, polymerization reaction generation polymerization of epoxy resins occurs in the presence of photoinitiator and light radiation for epoxy monomer
The reaction temperature of object 2 is 20~60 DEG C, and the light radiation time is 15~80min.
Usually, 365nm, 0.8~25mw/cm can be selected2Ultraviolet light, under 20~60 DEG C of environment irradiate 15~
80min, so that photopolymerization reaction is completed.Certainly, the response parameter of photopolymerization reaction is not limited thereto, can be according to the actual situation
It is adjusted, as long as epoxy monomer polymerization can be made to generate epoxide resin polymer 2, details are not described herein.
It is illustrated below with a specific example:
Epoxy monomer uses polyethyleneglycol diglycidylether (abbreviation EGDE, n ≈ 3.45), and smectic liquid crystal uses
CB class mixed liquid crystal, photoinitiator uses UVI-6974, according to mass content percentage are as follows:
CB class mixed liquid crystal 60.0wt%；
EGDE 35.0wt%；
UVI-6974 5.0wt%.
Above-mentioned material is mixed in proportion, under the conditions of being protected from light, uniformly mixed above-mentioned material is passed through into roll-to-roll (Roll
To Roll) mode is placed between the first conductive layer 5 and the second conductive layer 6；It is 3mW/ with ultraviolet ray intensity under the conditions of 40 DEG C
cm2365nm ultraviolet light irradiation 30min, above-mentioned polymer dispersed liquid-crystal film can be obtained.The polymer of the present embodiment point
The preparation method for dissipating liquid crystal film, is used to prepare the polymer dispersed liquid-crystal film of embodiment 1, and detailed description can refer to embodiment
1 polymer dispersed liquid-crystal film, details are not described herein.
The preparation method of the polymer dispersed liquid-crystal film of the present embodiment is used to prepare the polymer dispersion liquid of embodiment 1
Brilliant film, the polymer dispersed liquid-crystal film include: smectic liquid crystal 1 and epoxide resin polymer 2, epoxide resin polymer 2
In include ion, smectic liquid crystal 1 is dispersed in epoxide resin polymer 2, due to smectic liquid crystal 1 compared with the existing technology in
Common nematic liquid crystal has relatively high viscosity, and includes ion in epoxide resin polymer 2, by by smectic phase liquid
Crystalline substance 1 is dispersed in epoxide resin polymer 2, polymer can be made to disperse after terminating to be powered to polymer dispersed liquid-crystal film
Liquid crystal film still maintains state when being powered, and is maintained without external force, to realize two-state control, and then is reached
Energy-efficient purpose.
Embodiment 3:
Referring to figure 4. to Fig. 6, the present embodiment provides a kind of control method of polymer dispersed liquid-crystal film, polymer point
The polymer dispersed liquid-crystal film that liquid crystal film is embodiment 1 is dissipated, control method includes:
As shown in figure 4, transparent state controls the stage: i.e. when needing polymer dispersed liquid-crystal film transparent, to polymer point
It dissipates liquid crystal film and applies DC electric field or high-frequency electric field, the transparent state of polymer dispersed liquid-crystal film；Remove DC electric field or height
Frequency electric field, polymer dispersed liquid-crystal film maintain transparent state.
It should be noted that the epoxide resin polymer 2 with ion is in electricity when applying DC electric field or high-frequency electric field
It is moved under field action to the first conductive layer 5 and/or the second conductive layer 6, until epoxide resin polymer 2 is distributed in the first conductive layer
5 and/or second on conductive layer 6 and it is remain stationary state, it, can be at this point, the director of smectic liquid crystal 1 is arranged along direction of an electric field
So that light (being depicted with arrows in figure) is directed through PDLC film, and transparent state is presented；When removing DC electric field or high-frequency electric field,
Due to the viscosity with higher of smectic liquid crystal 1, it is able to maintain that transparent state.
As shown in figure 5, nontransparent state controls the stage: i.e. when needing polymer dispersed liquid-crystal film nontransparent, Xiang Juhe
Object dispersed liquid-crystal film applies low frequency electric field, and polymer dispersed liquid-crystal film is in nontransparent state；Remove low frequency electric field, polymer point
It dissipates liquid crystal film and maintains nontransparent state.
It should be noted that when applying low frequency electric field, the epoxide resin polymer 2 with ion under electric field action,
Epoxide resin polymer 2 with ion is moved in the first conductive layer 5 and/or the second conductive layer 6, but since electric field frequency is slow,
Epoxide resin polymer 2 with ion is in state that is chaotic, moving always, at this point, the director of smectic liquid crystal 1 with
On the interface of smectic liquid crystal 1 and epoxide resin polymer 2 multiple reflections occur for machine distribution, light (being depicted with arrows in figure)
And refraction, make the scattering incident light that PDLC film is strong, and milky nontransparent state is presented；When removing low frequency electric field, by
Therefore nontransparent state is able to maintain that in the viscosity with higher of smectic liquid crystal 1.
Fig. 6 is please referred to, Fig. 6 is voltage-transmittance curve of polymer dispersed liquid-crystal film.It should be noted that preparation
Polymer dispersed liquid-crystal film after the completion is transparent state.It can be seen from the figure that applying to polymer dispersed liquid-crystal film
The voltage (i.e. low-frequency voltage) of 20V, 100Hz are changed into nontransparent state (scattering states) by transparent state, remove its scattering states of voltage
It remains behind；Apply 20V again, the voltage (i.e. high frequency voltage or DC voltage) of 10KHz is changed into transmission state by scattering states
(replying original state) removes voltage its transmission state and remains behind.
The control method of the polymer dispersed liquid-crystal film of the present embodiment, for controlling the polymer dispersion liquid of embodiment 1
Brilliant film, detailed description can refer to the polymer dispersed liquid-crystal film of embodiment 1, and details are not described herein.
The control method of the polymer dispersed liquid-crystal film of the present embodiment, for controlling the polymer dispersion liquid of embodiment 1
Brilliant film, the polymer dispersed liquid-crystal film include: smectic liquid crystal 1 and epoxide resin polymer 2, epoxide resin polymer 2
In include ion, smectic liquid crystal 1 is dispersed in epoxide resin polymer 2, due to smectic liquid crystal 1 compared with the existing technology in
Common nematic liquid crystal has relatively high viscosity, and includes ion in epoxide resin polymer 2, by by smectic phase liquid
Crystalline substance 1 is dispersed in epoxide resin polymer 2, polymer can be made to disperse after terminating to be powered to polymer dispersed liquid-crystal film
Liquid crystal film still maintains state when being powered, and is maintained without external force, to realize two-state control, and then is reached
Energy-efficient purpose.
Embodiment 4:
Present embodiments provide a kind of display panel, comprising: the polymer dispersed liquid-crystal film of embodiment 1.
The display panel of the present embodiment, the polymer dispersed liquid-crystal film including embodiment 1, the polymer dispersed liquid crystals are thin
Film includes: smectic liquid crystal 1 and epoxide resin polymer 2, includes ion in epoxide resin polymer 2, and smectic liquid crystal 1 disperses
In epoxide resin polymer 2, due to smectic liquid crystal 1 compared with the existing technology in common nematic liquid crystal have relatively
High viscosity, and include ion in epoxide resin polymer 2, by the way that smectic liquid crystal 1 is dispersed in epoxide resin polymer 2
In, can terminate to polymer dispersed liquid-crystal film be powered after, make polymer dispersed liquid-crystal film still maintains energization when
State is maintained without external force, to realize two-state control, and then reaches energy-efficient purpose.
Embodiment 5:
Present embodiments provide a kind of display device, comprising: the display panel of embodiment 4.Display device can be with are as follows: liquid crystal
Display panel, Electronic Paper, mobile phone, tablet computer, television set, display, laptop, Digital Frame, navigator etc. are any
Products or components having a display function.
The display device of the present embodiment, the display panel including embodiment 4, since smectic liquid crystal 1 is relative to existing skill
Common nematic liquid crystal has relatively high viscosity in art, and includes ion in epoxide resin polymer 2, by by smectic
Phase liquid crystal 1 is dispersed in epoxide resin polymer 2, can make polymer after terminating to be powered to polymer dispersed liquid-crystal film
Dispersed liquid-crystal film still maintains state when being powered, and is maintained without external force, to realize two-state control, in turn
Reach energy-efficient purpose.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (8)
1. a kind of polymer dispersed liquid-crystal film characterized by comprising smectic liquid crystal and epoxide resin polymer, it is described
It include ion in epoxide resin polymer, the smectic liquid crystal is dispersed in the epoxide resin polymer, the asphalt mixtures modified by epoxy resin
Lipopolymer is glycidyl ether type epoxy resinous polymer；
Polymerization reaction generation is occurred in the presence of photoinitiator and light radiation by epoxy monomer for the epoxide resin polymer；
The mass percent of the smectic liquid crystal, the epoxy monomer and the photoinitiator are as follows:
40~80wt% of smectic liquid crystal；
29~60wt% of epoxy monomer；
1~10wt% of photoinitiator.
2. polymer dispersed liquid-crystal film according to claim 1, which is characterized in that
The photoinitiator includes diaryl iodonium salt and triaryl sulfonium salts.
3. polymer dispersed liquid-crystal film according to claim 1, which is characterized in that further include: first be oppositely arranged
Flexible substrates and the second flexible substrates are led positioned at first flexible substrates close to the first of the side of second flexible substrates
Electric layer and positioned at second flexible substrates close to the second conductive layer of the side of first flexible substrates, the epoxy resin
Polymer and the smectic liquid crystal are between first conductive layer and second conductive layer.
4. a kind of preparation method of polymer dispersed liquid-crystal film characterized by comprising
Smectic liquid crystal and epoxy monomer are mixed；
The epoxy monomer polymerization generates epoxide resin polymer, and the epoxide resin polymer is glycidol ethers ring
Oxygen resinous polymer；
It wherein, include ion in the epoxide resin polymer, the smectic liquid crystal is dispersed in the epoxide resin polymer
In；
It is described to include: by smectic liquid crystal and epoxy monomer mixing
Smectic liquid crystal, epoxy monomer and photoinitiator are mixed；
The epoxy monomer polymerization generates epoxide resin polymer and includes:
Polymerization reaction occurs in the presence of photoinitiator and light radiation and generates epoxide resin polymer for epoxy monomer；
The mass percent of the smectic liquid crystal, the epoxy monomer and the photoinitiator are as follows:
40~80wt% of smectic liquid crystal；
29~60wt% of epoxy monomer；
1~10wt% of photoinitiator.
5. the preparation method according to claim 4, which is characterized in that the epoxy monomer is in photoinitiator and light spoke
In the presence of penetrating occur polymerization reaction generate epoxide resin polymer reaction temperature be 20~60 DEG C, the light radiation time be 15~
80min。
6. a kind of control method of polymer dispersed liquid-crystal film, which is characterized in that the polymer dispersed liquid-crystal film is power
Benefit requires polymer dispersed liquid-crystal film described in 1-3 any one, and the control method includes:
Transparent state controls the stage: Xiang Suoshu polymer dispersed liquid-crystal film applies DC electric field or high-frequency electric field, the polymer
The transparent state of dispersed liquid-crystal film；
Remove the DC electric field or high-frequency electric field, the polymer dispersed liquid-crystal film maintains the transparent state；
Nontransparent state controls the stage: Xiang Suoshu polymer dispersed liquid-crystal film applies low frequency electric field, the polymer dispersed liquid crystals
Film is in nontransparent state；
Remove the low frequency electric field, the polymer dispersed liquid-crystal film maintains the nontransparent state.
7. a kind of display panel characterized by comprising polymer dispersed liquid crystals described in claim 1-3 any one is thin
Film.
8. a kind of display device characterized by comprising the display panel of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610480262.1A CN106125386B (en) | 2016-06-27 | 2016-06-27 | Polymer dispersed liquid-crystal film and preparation and control method, display panel and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610480262.1A CN106125386B (en) | 2016-06-27 | 2016-06-27 | Polymer dispersed liquid-crystal film and preparation and control method, display panel and device |
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| Publication Number | Publication Date |
|---|---|
| CN106125386A CN106125386A (en) | 2016-11-16 |
| CN106125386B true CN106125386B (en) | 2019-08-30 |
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| CN102286133B (en) * | 2011-04-28 | 2012-11-07 | 北京科技大学 | Preparation method of polymer dispersed liquid crystal film material |
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