CN109164620A - A kind of stretchable light scattering liquid crystal display device of full self-healing and preparation method thereof - Google Patents
A kind of stretchable light scattering liquid crystal display device of full self-healing and preparation method thereof Download PDFInfo
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- CN109164620A CN109164620A CN201811045724.2A CN201811045724A CN109164620A CN 109164620 A CN109164620 A CN 109164620A CN 201811045724 A CN201811045724 A CN 201811045724A CN 109164620 A CN109164620 A CN 109164620A
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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
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
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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
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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
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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
- C09K2019/526—Gelling agents
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The present invention relates to field of display technology, to solve the problems, such as that conventional flex can the deformation display device weakness that arbitrarily cannot bend and destroy, provide a kind of stretchable light scattering liquid crystal display device of full self-healing and preparation method thereof, coating of the stretchable light scattering liquid crystal display device of full self-healing by middle layer and positioned at middle layer two sides forms, the middle layer is self assembly physics of liquid crystals gel, and the coating is flexible selfreparing film.The present invention is on the Research foundation of conventional flex device, the weakness for overcoming it arbitrarily cannot bend and destroy, by the thermal reversibility of physics of liquid crystals gel can and the self-repair function of flexible conductive film combine, thus extend it is flexible can deformation display device service life, expand its application prospect.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of stretchable light scattering liquid crystal display device of full self-healing and
Preparation method.
Background technique
Currently, making flexible display technologies progress into public view the numerous studies of foldable bendable display part
Open country there is now the application report of associated flexible OLED display screen, but such display screen secures screen curvature, and user cannot be according to certainly
Oneself hobby arbitrarily bends display, and display screen aging otherwise can be accelerated to lead to brightness decline, generate stain, concealed wire equivalent damage,
To make the service life rapid deterioration of flexible display screen.
Zhao Kaifeng is in its Master's thesis to preparation and property based on Diels-Alder reversible covalent bonds self-healing polymers
Comprehensive study is can be carried out；Qibing Pei seminar is based on DA cycloaddition reaction and AgNWs is prepared for transparent combination electrode and uses
In can self-healing capacitive touch sensors.
" a kind of liquid crystal fluorescence light scattering display screen containing micro gelator ", bulletin are disclosed in Chinese patent literature
Number be CN105319758A；" a kind of stretchable light scattering liquid crystal display screen of electroresponse and its system are disclosed in Chinese patent literature
Preparation Method ", notification number CN105158959A；Gelator is applied to physics of liquid crystals gel by above-mentioned two patents, is expanded
Light scatters display field.But the studies above only applies the optical Response and electrical response performance of physics of liquid crystals gel, does not relate to
And its natural thermal reversibility energy, i.e. self-healing performance.
Summary of the invention
The present invention provides a kind of stretchable liquid crystal light of full self-healing to overcome above-mentioned problems of the prior art
Display device is scattered, device is realized and keeps its original display and response characteristic under any deformation, even if by display
Electrode layer and display layer cutting, after carrying out selfreparing in heat treatment, mechanics, electricity and other response characteristics of device still may be used
With repair, thus greatly prolong can deformation display device service life.
The present invention also provides a kind of complete stretchable light scattering liquid crystal display devices of self-healing to obtain preparation method, this method work
Skill step is simple, to equipment without particular/special requirement, is advantageously implemented large-scale industrial production.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of stretchable light scattering liquid crystal display device of full self-healing, the complete stretchable light scattering liquid crystal display device of self-healing
It is made of middle layer and the coating positioned at middle layer two sides, the middle layer is self assembly physics of liquid crystals gel, the covering
Layer is flexible selfreparing film.
Preferably, on the basis of self assembly physics of liquid crystals gel gross mass, the self assembly physics of liquid crystals gel by
The liquid-crystal compounds of 98.0~99.9wt% and the gelator composition of 0.1~2.0wt%.
Preferably, the structural formula of the gelator are as follows:
Preferably, the liquid-crystal compounds is selected from nematic liquid crystal 5CB, smectic liquid crystal 8CB, cholesteric phase 5CB+S811
One of with ferroelectric liquid crystals PHD9.
Preferably, the liquid-crystal compounds has following structure formula:
Preferably, the flexibility selfreparing film first passes through multiple functional radical furan compound as divinyl macromer and Malaysia acyl
As dienophile Diels-Alder reaction occurs for imine compound, then and among AgNWs conductive network, ultra-thin polarity
Layer and furans/three layers of maleimide self-repair material progress are compound obtained.
Preferably, the AgNWs conductive network is by silver nanowires, methanol and isopropanol according to mass ratio 1:1:(1~2)
It configures.
Preferably, the ultra-thin polarity middle layer is polyurethane PU；Or polyfunctional group polyester acrylate PA and methyl
The mixed solution of acrylic acid chaff ester FM.The success of resistance transfer can be improved in the presence of ultra-thin polarity middle layer to a certain extent
Rate enhances electric conductivity.
Preferably, on the basis of furans/maleimide self-repair material gross mass, the furans/maleimide
Self-repair material is by the multiple functional radical furan compound of 70~80wt% and the maleimide compound group of 20~30wt%
At.
A kind of preparation method of the stretchable light scattering liquid crystal display device of full self-healing, comprising the following steps: will liquid-crystalize
It closes object and gelator to be uniformly mixed and dissolve each other at 140~160 DEG C, be poured into while hot by two panels flexibility selfreparing film system
At device in, then be packaged to get the stretchable light scattering liquid crystal display device of full self-healing through polyurethane PU.
Preferably, using separating ball control display device with a thickness of 10~20 μm before encapsulation.
Therefore, the invention has the following beneficial effects: on the Research foundation of conventional flex device, overcome it random
Bending and the weakness destroyed can combine the thermal reversibility of physics of liquid crystals gel, system with the self-repair function of flexible conductive film
It is standby gone out a kind of stretchable light scattering liquid crystal display device of novel full self-healing, with extend it is flexible can deformation display device make
With the service life, its application prospect is expanded.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the stretchable light scattering liquid crystal display device of full self-healing of the invention.
In figure, self assembly physics of liquid crystals gel 1, flexible selfreparing film 2.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, the technical solutions of the present invention will be further described.
In the present invention, if not refering in particular to, all devices and raw material is commercially available or the industry is common are following
Method in embodiment is unless otherwise instructed conventional method in that art.
The structural formula of gelator used in following embodiment are as follows:
As shown in Figure 1, a kind of stretchable light scattering liquid crystal display device of full self-healing, by middle layer and is located at middle layer two
The coating of side forms, and middle layer is self assembly physics of liquid crystals gel 1, and coating is flexible selfreparing film 2.
Because light scattering liquid crystal display device made of subsequent is to the light transmission of device entirety and flexible selfreparing film
Electric conductivity has very high requirement, therefore it is thin to flexible selfreparing by ultra-thin polarity middle layer to first pass through embodiment 1,2 and comparative example 1
The translucency and electric conductivity of film are studied.
Embodiment 1
Roller coating AgNWs conductive network (silver nanowires, methanol: isopropanol=1:1:1) is to sheet resistance 15 on cleaned glass plate
Ω configures furans/maleimide self-repair material (the multiple functional radical furan compound of 70wt% and the maleimide of 30wt%
Amine), and polyurethane PU performed polymer is laid on and reviews one's lessons by oneself film surface progress in-situ polymerization, then covers the glass for having coated conductive network
Glass piece.PU film is heat-treated after solidifying at room temperature, is removed while hot up to three layers of combination electrode of AgNWs/PU/ selfreparing film, i.e.,
For flexible selfreparing film.
Embodiment 2
Roller coating AgNWs conductive network (silver nanowires, methanol: isopropanol=1:1:2) is to sheet resistance 20 on cleaned glass plate
Ω configures furans/maleimide self-repair material (the multiple functional radical furan compound of 80wt% and the maleimide of 20wt%
Amine), and polyfunctional group polyester acrylate PA- methacrylic acid chaff ester FM performed polymer (PA-FM performed polymer) is laid on and is reviewed one's lessons by oneself
Film surface carries out in-situ polymerization, then covers the sheet glass for having coated conductive network.After PA-FM film solidifies at room temperature at heat
Reason is removed while hot up to three layers of combination electrode of AgNWs/PA-FM/ selfreparing film, as flexible selfreparing film.
Comparative example
Roller coating AgNWs conductive network (silver nanowires, methanol: isopropanol=1:1:2) is to sheet resistance 10 on cleaned glass plate
Ω configures furans/maleimide self-repair material, then covers the sheet glass for having coated conductive network.Two layers compound is led
After conductive film heat treatment, removed while hot up to two layers of combination electrode of AgNWs/ selfreparing film, as flexible selfreparing film.
The electric conductivity of flexibility selfreparing film and translucency made from embodiment 1,2 and comparative example are detected, as a result
It is as shown in table 1:
1. test result of table
| Performance indicator | Resistance (Ω) | Light transmittance (%) |
| Embodiment 1 | 26.8 | 85 |
| Embodiment 2 | 25.4 | 70 |
| Comparative example | 54.5 | 75 |
As can be seen from Table 2, by increasing ultra-thin polarity middle layer polyurethane PU or PA-FM pre-polymerization in flexible selfreparing film
Body, resulting flexibility selfreparing film is in a slight decrease relative to ultra-thin polarity middle layer light transmittance is not increased, but ultra-thin polarity
Middle layer can increase substantially the success rate of resistance transfer, to enhance the electric conductivity of flexible selfreparing film.
Embodiment 3
Referring to table 2, by the structural formula of the liquid-crystal compounds nematic phase (5CB) of 99.9wt% and 0.1wt% for A gelator in
It is uniformly mixed and dissolves each other at 140 DEG C, poured into while hot by resulting three layers of AgNWs/PU/ selfreparing film of two panels embodiment 1
It in device made of composite and flexible selfreparing film, then is packaged through polyurethane PU, utilizes the thickness of separating ball control device
For 18 μm to get the stretchable light scattering liquid crystal display device of full self-healing.
Embodiment 4
Embodiment 4 and the difference of embodiment 3 are that the structural formula of gelator used is B, remaining process conditions is identical.
Embodiment 5
Embodiment 5 and the difference of embodiment 3 are that the structural formula of gelator used is C, remaining process conditions is identical.
Embodiment 6
It is the gelator of A in 150 by 99.5% liquid-crystal compounds smectic phase (8CB) and 0.5% structural formula referring to table 2
It is uniformly mixed and dissolves each other at DEG C, poured into while hot by resulting three layers of AgNWs/PA-FM/ selfreparing film of two panels embodiment 2
It in device made of composite and flexible selfreparing film, then is packaged through polyurethane PU, utilizes the thickness of separating ball control device
For 20 μm to get the stretchable light scattering liquid crystal display device of full self-healing.
Embodiment 7
Embodiment 7 and the difference of embodiment 6 are that the structural formula of gelator used is B, remaining process conditions is identical.
Embodiment 8
Embodiment 8 and the difference of embodiment 6 are that the structural formula of gelator used is C, remaining process conditions is identical.
Embodiment 9
Referring to table 2, the gel for being A by the structural formula of the liquid-crystal compounds cholesteric phase (5CB+S811) of 98.0wt% and 2.0wt%
The factor is uniformly mixed and is dissolved each other at 160 DEG C, is poured into while hot thin by the resulting AgNWs/PU/ selfreparing of two panels embodiment 1
It in device made of three layers of composite and flexible selfreparing film of film, then is packaged through polyurethane PU, utilizes separating ball control device
With a thickness of 10 μm to get the stretchable light scattering liquid crystal display device of full self-healing.
Embodiment 10
Embodiment 10 and the difference of embodiment 9 are that the structural formula of gelator used is B, remaining process conditions is identical.
Embodiment 11
Embodiment 11 and the difference of embodiment 9 are that the structural formula of gelator used is C, remaining process conditions is identical.
Embodiment 12
Referring to table 2, the gelator for being A by the structural formula of 98.3% liquid-crystal compounds ferroelectric liquid crystals (PHD9) and 1.7wt%
It is uniformly mixed and dissolves each other at 145 DEG C, poured into while hot by the resulting AgNWs/PA-FM/ selfreparing film of two panels embodiment 2
It in device made of three layers of composite and flexible selfreparing film, then is packaged through polyurethane PU, utilizes separating ball control device
With a thickness of 15 μm to get the stretchable light scattering liquid crystal display device of full self-healing.
Embodiment 13
Embodiment 13 and the difference of embodiment 12 are that the structural formula of gelator used is B, the complete phase of remaining process conditions
Together.
Embodiment 14
Embodiment 14 and the difference of embodiment 12 are that the structural formula of gelator used is C, the complete phase of remaining process conditions
Together.
The tensile property of the stretchable light scattering liquid crystal display device of full self-healing made from embodiment 3-14 is detected, is tied
Fruit is as shown in table 2:
2. tensile property test result of table
After the stretchable light scattering liquid crystal display device of full self-healing made from embodiment 3-14 is integrally cut off respectively, by cutting
Two parts are put together, and are placed in baking oven after different temperatures is heat-treated different time, then measure the liquid crystal light of each embodiment
The tensile property and electricity of device are scattered, test condition and the results are shown in Table 3:
3. self-healing test condition of table and result
The processing of different healing temperature and times has centainly the display of device and tensile property it can be seen from the result of table 3
Influence.In a certain range, the too short device that will lead to of healing time can not normally be shown, also, with healing time and temperature
The increase of degree, the light scattering liquid crystal device after healing can realize selfreparing, in the case where guaranteeing normal display, Ke Yijin
Row stretches, and reaches certain stretching ratio.Therefore, the stretchable light scattering liquid crystal display device of full self-healing of the invention passes through
The thermal reversibility of physics of liquid crystals gel can be combined with the self-repair function of flexible conductive film, overcome conventional display device not
The weakness that arbitrarily can be bent and destroy, extend it is flexible can deformation display device service life, expand its application prospect.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, and is not surpassing
There are also other variations and modifications under the premise of technical solution documented by claim out.
Claims (10)
1. a kind of stretchable light scattering liquid crystal display device of full self-healing, which is characterized in that the complete stretchable liquid crystal of self-healing
Light scatters coating of the display device by middle layer and positioned at middle layer two sides and forms, and the middle layer is self assembly physics of liquid crystals
Gel, the coating are flexible selfreparing film.
2. a kind of complete stretchable light scattering liquid crystal display device of self-healing according to claim 1, which is characterized in that with certainly
Assemble liquid crystal physical gel gross mass on the basis of, the self assembly physics of liquid crystals gel by 98.0~99.9wt% LCD compound
The gelator of object and 0.1~2.0wt% composition.
3. a kind of complete stretchable light scattering liquid crystal display device of self-healing according to claim 2, which is characterized in that described
The structural formula of gelator are as follows:
4. a kind of complete stretchable light scattering liquid crystal display device of self-healing according to claim 2, which is characterized in that described
Liquid-crystal compounds is selected from nematic liquid crystal 5CB, smectic liquid crystal 8CB, and one in cholesteric phase 5CB+S811 and ferroelectric liquid crystals PHD9
Kind.
5. a kind of complete stretchable light scattering liquid crystal display device of self-healing according to claim 1, which is characterized in that described
It is double as parent as divinyl macromer and maleimide compound that flexible selfreparing film first passes through multiple functional radical furan compound
Diels-Alder reaction occurs for alkene body, then certainly with AgNWs conductive network, ultra-thin polarity middle layer and furans/maleimide
Three layers of repair materials progress is compound to be made.
6. a kind of complete stretchable light scattering liquid crystal display device of self-healing according to claim 5, which is characterized in that described
AgNWs conductive network is by silver nanowires, methanol and isopropanol according to mass ratio 1:1:(1~2) it configures.
7. a kind of complete stretchable light scattering liquid crystal display device of self-healing according to claim 5, which is characterized in that described
Ultra-thin polarity middle layer is polyurethane PU；Or polyfunctional group polyester acrylate PA and the mixing of methacrylic acid chaff ester FM it is molten
Liquid.
8. a kind of complete stretchable light scattering liquid crystal display device of self-healing according to claim 5, which is characterized in that with furan
Mutter/maleimide self-repair material gross mass on the basis of, the furans/maleimide self-repair material is by 70~80wt%
Multiple functional radical furan compound and 20~30wt% maleimide compound composition.
9. a kind of stretchable light scattering liquid crystal of full self-healing as described in claims 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 is shown
The preparation method of device, which comprises the following steps: mix liquid-crystal compounds and gelator at 140~160 DEG C
It closes uniformly and dissolves each other, poured into the device made of two panels flexibility selfreparing film while hot, then sealed through polyurethane PU
Dress is to get the stretchable light scattering liquid crystal display device of full self-healing.
10. the preparation method of the stretchable light scattering liquid crystal display device of full self-healing according to claim 9, feature exist
In using separating ball control display device with a thickness of 10~20 μm before encapsulation.
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| CN112216206A (en) * | 2019-07-09 | 2021-01-12 | 陕西坤同半导体科技有限公司 | Glass cover plate, flexible display screen and display device |
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| CN112216206A (en) * | 2019-07-09 | 2021-01-12 | 陕西坤同半导体科技有限公司 | Glass cover plate, flexible display screen and display device |
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