CN105319758A - A liquid crystal fluorescence light scattering display screen containing a trace of gelators - Google Patents
A liquid crystal fluorescence light scattering display screen containing a trace of gelators Download PDFInfo
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- CN105319758A CN105319758A CN201510645200.7A CN201510645200A CN105319758A CN 105319758 A CN105319758 A CN 105319758A CN 201510645200 A CN201510645200 A CN 201510645200A CN 105319758 A CN105319758 A CN 105319758A
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- 0 CCCCC*CC(*)([*+]C(CC(C)(C)C)C#O)NC Chemical compound CCCCC*CC(*)([*+]C(CC(C)(C)C)C#O)NC 0.000 description 4
- QKNFFJHHPCWXTH-UHFFFAOYSA-N CC(C(N)=O)NC Chemical compound CC(C(N)=O)NC QKNFFJHHPCWXTH-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
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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
-
- 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
-
- 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 invention provides a liquid crystal fluorescence light scattering display screen containing a trace of gelators. The liquid crystal fluorescence light scattering display screen is prepared from liquid crystal physical gel obtained by adding a proper amount of gelators in a liquid crystal matrix compound containing an azobenzene compound and fluorescent powder. The liquid crystal physical gel contains, by mass, 82.0%-97.9wt% of the liquid crystal matrix compound, 1-8.2wt% of the azobenzene compound, 1-8.2wt% of the ultraviolet fluorescent powder and 0.1-1.6wt% of the gelators. The liquid crystal fluorescence light scattering display screen is characterized by a high contrast ratio of liquid crystal; with only a trace of gelators and without polarizing films, the display screen can be applied to the field of light scattering display of non-backlight lamps; the fluorescence light scattering display screen is simple in manufacturing process, is stable in visible light owing to ultraviolet excitation, and has the advantages of wide field of view, high brightness and high image contrast ratio.
Description
(1) technical field
The present invention relates to a kind of liquid crystal fluorescence light scattering display screen containing micro-gelator.
(2) background technology
Physics of liquid crystals gel is the novel soft material of a class, has the anisotropy of liquid crystal and the thermal reversibility of gel concurrently.Its micro phase separation structure formed, induces or improves the photoelectricity of liquid crystal, photochemistry and electrical property.Therefore, physics of liquid crystals gel is widely used in the fields such as light scattering display, grating, semiconductor material.
Usually, the content of gelator in the gel with liquid crystal structure being applied to light scattering liquid crystal display screen is higher.If by adding the gel strength that a small amount of gelator can realize needed for light scattering liquid crystal display screen, the light scattering liquid crystal display screen containing low content gelator just can be obtained.
Meanwhile, there is device architecture relative complex in conventional liquid crystal, the problem that brightness and contrast needs to be further improved etc.This is that liquid crystal molecule changes arrangement mode under the driving of voltage, realizes the switching between bright field and details in a play not acted out on stage, but told through dialogues owing to must there is mutually orthogonal polaroid in display to provide details in a play not acted out on stage, but told through dialogues, but the existence of polaroid causes display field range to narrow, and brightness is dimmed.If can when only adding micro-gelator and do not use polaroid, the liquid crystal display of obtained a kind of high-contrast, just can expand the function and application field of liquid crystal display.
The invention provides a kind of by adding micro-gelator and ultraviolet fluorescence powder and not using the liquid crystal fluorescence light scattering display screen of polaroid, overcome that gelator content in gel with liquid crystal structure is high, conventional liquid crystal is to the needs of polaroid and the shortcoming such as contrast is low, preparation technology is simple, can be applicable to the fluorescence light scattering display field of hi-vision contrast.
(3) summary of the invention
In order to overcome the deficiency of background technology, the present invention has prepared a kind of liquid crystal fluorescence light scattering display screen containing micro-gelator.In order to realize above target, technical scheme of the present invention is as follows:
Liquid crystal fluorescence light scattering display screen containing micro-gelator of the present invention is by the physics of liquid crystals gel preparation added gelator in the liquid crystal matrix compound containing azobenzene compound and fluorescent powder and obtain, and described physics of liquid crystals gel is made up of the material of following quality proportioning: the gelator of the liquid crystal matrix compound of 82.0-97.9wt%, 1-8.2wt% azobenzene compound, 1-8.2wt% ultraviolet fluorescence powder and 0.1-1.6wt%; Described liquid crystal matrix compound is 5CB or E7 liquid crystal; Described azobenzene compound is 4,4-diethoxy azobenzene or 4-dimethyl amino-azo-benzene; Described ultraviolet fluorescence powder is one of following: 8611 import fluorescent powder (form and aspect: pink, model: 8611, Wei Caixiang pigment company limited of Shenzhen), MC-17 fluorescent powder (form and aspect: pink, model: U.S. Dayglo (enlightening is high) MC-17, Hua Yichang chemical color company limited of Shenzhen), YD-11 fluorescent powder (form and aspect: pink, model: YD-11, Yao Desheng Science and Technology Ltd. of Shenzhen), 107 ultraviolet oiliness fluorescent powder (form and aspect: pink, model: 107, nova Chemical Co., Ltd. of Jinan City); Described gelator is following one or more combination:
Described gelator is gelator A, described gelator A by as shown in the formula the compound shown in (I), formula (II) and formula (III) in mass ratio 1:1:1 ~ 1:2:3 form.
Described gelator is gelator B, described gelator B by as shown in the formula the compound shown in (IV) and formula (V) in mass ratio 1:5 ~ 5:1 form.
Described gelator is gelator C, described gelator C by as shown in the formula the compound shown in (VI), formula (VII) and formula (VIII) in mass ratio 1:1:1 ~ 1:2:3 form.
Described gelator is gelator D, and described gelator D is the compound of formula (IX).
Physics of liquid crystals gel of the present invention is made up of the material of following quality proportioning: the gelator of the liquid crystal matrix compound of 88-91.5wt%, 5-6wt% azobenzene compound, 3-5wt% ultraviolet fluorescence powder and 0.5-1wt%.
The preparation method of the liquid crystal fluorescence light scattering display screen containing micro-gelator of the present invention comprises the steps: at the isotropic phase temperature of liquid crystal matrix compound, in liquid crystal matrix compound, azobenzene compound is mixed by the formula ratio of each component forming physics of liquid crystals gel, ultraviolet fluorescence powder and gelator, at 140 ~ 260 DEG C of temperature, abundant mixing 10 ~ 20min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, utilize double faced adhesive tape THICKNESS CONTROL device thickness 2-3mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, 365nm UV-irradiation 20 ~ 60 minutes, the obtained liquid crystal fluorescence light scattering display screen containing micro-gelator.
Beneficial effect of the present invention is: provide a kind of liquid crystal fluorescence light scattering display screen having stronger contrast, and only exists without polaroid containing while micro-gelator in display screen, can be applicable to the light scattering display field without backlight.The physics of liquid crystals gel fluorescence light scattering display screen of this kind of No yield point film and polaroid, not only preparation technology is simple, and by ultraviolet excitation, stablizes under visible light, has that field range is wide, brightness is high, picture contrast high.
(3) accompanying drawing explanation
Fig. 1 (a) is the imaging schematic diagram of physics of liquid crystals gel before 365nm UV-irradiation 30min doped with 4.5wt%107 ultraviolet oiliness fluorescent powder; Fig. 1 (b) is the imaging schematic diagram of physics of liquid crystals gel after 365nm UV-irradiation 30min doped with 4.5wt%107 ultraviolet oiliness fluorescent powder.
Fig. 2 is the fluorescent absorption spectrum (PI:PriortoIrradiation, AI:AfterIrradiation, λ=365nm) before and after physics of liquid crystals gel UV-irradiation 30min.
(4) embodiment
Below by embodiment, technical scheme of the present invention is further described in detail, but protection scope of the present invention is not limited thereto.
Embodiment 1:
The imaging schematic diagram of the liquid crystal fluorescence light scattering display screen containing micro-gelator that the present invention obtains as shown in Figure 1.
At 150 DEG C, 4.5wt%4 is mixed in 90.5wt%5CB liquid crystal, 4-diethoxy azobenzene, the gelator D of 4.5wt%107 ultraviolet oiliness fluorescent powder and 0.5wt%, gelator D is the compound of formula (IX), under 150 DEG C of oil baths, abundant mixing 20min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.21mm, thickness of liquid crystal layer 0.05mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, after equipment irradiates 30min under being exposed on 365nm ultraviolet light by " ZJUT " figure photomask, the obtained liquid crystal fluorescence light scattering display screen containing micro-gelator.
When system is in light-scattering state, the fluorescence that fluorescent powder produces by ultraviolet excitation shakes back and forth thus presents strong fluorescence overlaying state in gel network.Letter region, owing to being subject to UV-irradiation, is in pellucidity, the fluorescence also unstressed configuration effect in transmissive state of ultraviolet excitation.The luminescence contrast of this hyperfluorescenceZeng Yongminggaoyingguang state-unstressed configuration state improves picture contrast.
Result shows, the present invention proposes preparation containing micro-gelator D, feasible without the method for the gel with liquid crystal structure fluorescence light scattering display screen of polaroid.This display screen does not only use polaroid, and by after ultraviolet excitation, stable existence in visible-range.
Embodiment 2:
At 150 DEG C, 4.5wt%4 is mixed in 90.9wt%5CB liquid crystal, 4-diethoxy azobenzene, 4.5wt%YD-11 fluorescent powder and 0.1wt% gelator D, gelator D is the compound of formula (IX), under 150 DEG C of oil baths, abundant mixing 20min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.21mm, thickness of liquid crystal layer 0.05mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, different by the luminous intensity of fluorescence before and after 365nm UV-irradiation 30min with during pellucidity in light scattering, its result as shown in Figure 2.
When before UV-irradiation, namely system is in light-scattering state, the system of detecting sends strong fluorescence; When system is in pellucidity after by UV-irradiation, system does not almost send fluorescence.
Result shows, system provided by the invention fluorescence radiation intensity contrast when light scattering and clear state is obvious, is conducive to the contrast improving display image.
Embodiment 3:
At 250 DEG C, 8.2wt%4-dimethyl amino-azo-benzene is mixed in 82.0wt%E7 liquid crystal, the gelator C ((VI): (VII): (VIII) mass ratio is 1:2:3) of 8.2wt%MC-17 fluorescent powder and 1.6wt%, under 250 DEG C of oil baths, abundant mixing 10min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.33mm, thickness of liquid crystal layer 0.06mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, after 365nm UV-irradiation 25min, the obtained liquid crystal fluorescence light scattering display screen containing micro-gelator.
Result shows, the fluorescence light scattering display screen fluorescence radiation intensity contrast that the present invention prepares is obvious, stable existence in visible-range.
Embodiment 4:
At 250 DEG C, 4 are mixed in E7 liquid crystal, 4-diethoxy azobenzene, the gelator (IV) of 8611 import fluorescent powder and different quality ratio, (V) (gelator B is comprised), each constituent mass mark is in table 1, under 250 DEG C of oil baths, abundant mixing 10min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.33mm, thickness of liquid crystal layer 0.06mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, after 365nm UV-irradiation 25min, the obtained liquid crystal fluorescence light scattering display screen containing micro-gelator, contrast the stability under the contrast of 30 groups of display screens and visible ray, in table 2.
The physics of liquid crystals gel that table 1 is made up of different gelator (IV), (V) massfraction
| Component matter | E7/wt％ | 4,4-diethoxy is even | Gelator | Gelator | 8611 import fluorescence |
| Amount mark | Pyridine/wt% | (IV)/wt％ | (V)/wt％ | Powder/wt% | |
| 1 | 90.9 | 4.5 | 0.1 | 0 | 4.5 |
| 2 | 90.7 | 4.5 | 0.3 | 0 | 4.5 |
| 3 | 90.5 | 4.5 | 0.5 | 0 | 4.5 |
| 4 | 90.3 | 4.5 | 0.7 | 0 | 4.5 |
| 5 | 90.2 | 4.5 | 0.8 | 0 | 4.5 |
| 6 | 90.0 | 4.5 | 1.0 | 0 | 4.5 |
| 7 | 89.8 | 4.5 | 1.2 | 0 | 4.5 |
| 8 | 89.7 | 4.5 | 1.3 | 0 | 4.5 |
| 9 | 89.5 | 4.5 | 1.5 | 0 | 4.5 |
| 10 | 89.3 | 4.5 | 1.7 | 0 | 4.5 |
| 11 | 90.8 | 4.5 | 0 | 0.2 | 4.5 |
| 12 | 90.7 | 4.5 | 0 | 0.3 | 4.5 |
| 13 | 90.5 | 4.5 | 0 | 0.5 | 4.5 |
| 14 | 90.3 | 4.5 | 0 | 0.7 | 4.5 |
| 15 | 90.2 | 4.5 | 0 | 0.8 | 4.5 |
| 16 | 90.0 | 4.5 | 0 | 1.0 | 4.5 |
| 17 | 89.8 | 4.5 | 0 | 1.2 | 4.5 |
| 18 | 89.7 | 4.5 | 0 | 1.3 | 4.5 |
| 19 | 89.5 | 4.5 | 0 | 1.5 | 4.5 |
| 20 | 89.3 | 4.5 | 0 | 1.7 | 4.5 |
| 21 | 90.9 | 4.5 | 0.05 | 0.05 | 4.5 |
| 22 | 90.7 | 4.5 | 0.15 | 0.15 | 4.5 |
| 23 | 90.5 | 4.5 | 0.25 | 0.25 | 4.5 |
| 24 | 90.3 | 4.5 | 0.35 | 0.35 | 4.5 |
| 25 | 90.2 | 4.5 | 0.4 | 0.4 | 4.5 |
| 26 | 90.0 | 4.5 | 0.5 | 0.5 | 4.5 |
| 27 | 89.8 | 4.5 | 0.6 | 0.6 | 4.5 |
| 28 | 89.7 | 4.5 | 0.65 | 0.65 | 4.5 |
| 29 | 89.5 | 4.5 | 0.75 | 0.75 | 4.5 |
| 30 | 89.3 | 4.5 | 0.85 | 0.85 | 4.5 |
The different gelator of table 2 (IV), (V) massfraction are on the impact of display screen contrast and visible ray stability inferior
Result shows, gelator (IV), (V) massfraction have a certain impact to fluorescence light scattering display screen contrast, and within the specific limits, gelator concentration is larger, contrast is larger, and in visible-range, the stable existence time is longer.Simultaneously, by gelator (IV), (V) 1:1 interpolation in mass ratio, addition is larger, and display screen contrast is larger, in visible-range, the time of stable existence is longer, and effect all than single use gelator (IV) or (V) good.
Embodiment 5:
At 150 DEG C, 4.5wt%4 is mixed in 90.1wt%5CB liquid crystal, 4-diethoxy azobenzene, the gelator A ((I): (II): (III) mass ratio is 1:1:1) of 4.5wt%MC-17 fluorescent powder and 0.9wt%, under 150 DEG C of oil baths, abundant mixing 20min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.33mm, thickness of liquid crystal layer 0.06mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, after 365nm UV-irradiation 30min, obtained thickness of liquid crystal layer is the liquid crystal fluorescence light scattering display screen containing micro-gelator of 0.1mm.
Result shows, the fluorescence light scattering display screen fluorescence radiation intensity contrast that the present invention prepares is obvious, stable existence in visible-range.
Embodiment 6:
At 150 DEG C, 4.5wt%4 is mixed in 90.1wt%E7 liquid crystal, 4-diethoxy azobenzene, 4.5wt%MC-17 fluorescent powder and add the gelator (I) of 0.9wt% respectively, or (III) (II), under 150 DEG C of oil baths, abundant mixing 20min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.33mm, thickness of liquid crystal layer 0.06mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, after 365nm UV-irradiation 30min, obtained thickness of liquid crystal layer is the liquid crystal fluorescence light scattering display screen containing micro-gelator of 0.1mm.
Result shows, the fluorescence light scattering display screen fluorescence radiation intensity contrast that the present invention prepares is obvious, stable existence in visible-range.Compared with the fluorescence light scattering display screen that doping 5CB liquid crystal is obtained, both effects are similar.
Embodiment 7:
At 150 DEG C, 8.7wt%4-dimethyl amino-azo-benzene is mixed in 86.6wt%5CB liquid crystal, 4.3wt%107 ultraviolet oiliness fluorescent powder and add the gelator (IV) of 0.4wt% respectively, (V), (VI), or (VIII) (VII), under 150 DEG C of oil baths, abundant mixing 20min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.33mm, thickness of liquid crystal layer 0.06mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, after 365nm UV-irradiation 30min, obtained thickness of liquid crystal layer is the liquid crystal fluorescence light scattering display screen containing micro-gelator of 0.05mm, contrast the stability under the contrast of 5 groups of display screens and visible ray, the results are shown in Table 3.
Table 3 compares gelator (IV), (V), (VI), (VII), (VIII) to the impact of 5CB LCDs contrast and visible ray stability inferior
| Gelator | Contrast | Time stable under visible ray |
| (IV) | 40:1 | 30s |
| (V) | 50:1 | 40s |
| (VI) | 50:1 | 40s |
| (VII) | 60:1 | 44s |
| (VIII) | 65:1 | 50s |
Result shows, the present invention utilize respectively gelator (IV), (V), (VI), (VII), that (VIII) prepares contrast is high, the fluorescence light scattering display screen that under visible ray, the stable existence time is longer.For 5CB liquid crystal, contrast is all higher, all can stable existence under visible ray.
Embodiment 8:
At 250 DEG C, 8.7wt%4-dimethyl amino-azo-benzene is mixed in 86.6wt%E7, the gelator D of 4.3wt%107 ultraviolet oiliness fluorescent powder and 0.4wt%, under 250 DEG C of oil baths, abundant mixing 10min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.33mm, thickness of liquid crystal layer 0.06mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, after 365nm UV-irradiation 25min, obtained thickness of liquid crystal layer is the liquid crystal fluorescence light scattering display screen containing micro-gelator of 0.07mm.
Result shows, the fluorescence light scattering display screen fluorescence radiation intensity contrast that the present invention prepares is obvious, can stable existence in visible-range.
Embodiment 9:
At 250 DEG C, in 5CB, mix 4-dimethyl amino-azo-benzene YD-11 fluorescent powder and add gelator A respectively, B or C, each constituent mass mark is in table 4, under 250 DEG C of oil baths, abundant mixing 10min, treat that it dissolves each other, be introduced in a device be made up of microslide after having dissolved while hot, double faced adhesive tape THICKNESS CONTROL device thickness is utilized to be 2.33mm, thickness of liquid crystal layer 0.06mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, after 365nm UV-irradiation 30min, the obtained liquid crystal fluorescence light scattering display screen containing micro-gelator, contrast the stability under the contrast of 17 groups of display screens and visible ray, in table 5.
The physics of liquid crystals gel that table 4 is made up of than the mixed gel factor different quality
Stability under the physics of liquid crystals gel display screen contrast that table 5 is made up of than the mixed gel factor different quality and visible ray
Result shows, the physics of liquid crystals gel be made up of than the mixed gel factor different quality has a certain impact to fluorescence light scattering display screen contrast, within the specific limits, total contrast increases with the gelator massfraction added and increases, longer in the time of visible-range stable existence.Meanwhile, when total gelator massfraction is constant, suitably change mass ratio, little on the impact of stable existence time under display screen contrast and visible ray.
Above embodiment is only the more representational example of the present invention.Obviously, technical scheme of the present invention is not limited to above-described embodiment, can also have many changes.The change that those of ordinary skill in the art directly derives from content disclosed by the invention, all should think protection scope of the present invention.
Claims (7)
1. the liquid crystal fluorescence light scattering display screen containing micro-gelator, it is characterized in that, described liquid crystal fluorescence light scattering display screen is prepared by adding the physics of liquid crystals gel that gelator obtains in the liquid crystal matrix compound containing azobenzene compound and fluorescent powder, and described physics of liquid crystals gel is made up of the material of following quality proportioning: the gelator of the liquid crystal matrix compound of 82.0-97.9wt%, 1-8.2wt% azobenzene compound, 1-8.2wt% ultraviolet fluorescence powder and 0.1-1.6wt%; Described liquid crystal matrix compound is 5CB or E7 liquid crystal; Described azobenzene compound is 4,4-diethoxy azobenzene or 4-dimethyl amino-azo-benzene; Described ultraviolet fluorescence powder is one of following: 8611 import fluorescent powder, MC-17 fluorescent powder, YD-11 fluorescent powder, 107 ultraviolet oiliness fluorescent powder; Described gelator is following one or more combination:
2. the liquid crystal fluorescence light scattering display screen containing micro-gelator as claimed in claim 1, it is characterized in that, described gelator is gelator A, described gelator A by the compound shown in formula (I), formula (II) and formula (III) in mass ratio 1:1:1 ~ 1:2:3 form.
3. the liquid crystal fluorescence light scattering display screen containing micro-gelator as claimed in claim 1, it is characterized in that, described gelator is gelator B, described gelator B by the compound shown in formula (IV) and formula (V) in mass ratio 1:5 ~ 5:1 form.
4. the liquid crystal fluorescence light scattering display screen containing micro-gelator as claimed in claim 1, it is characterized in that, described gelator is gelator C, described gelator C by as shown in the formula the compound shown in (VI), formula (VII) and formula (VIII) in mass ratio 1:1:1 ~ 1:2:3 form.
5. the liquid crystal fluorescence light scattering display screen containing micro-gelator as claimed in claim 1, it is characterized in that, described gelator is gelator D, and described gelator D is the compound of formula (IX).
6. the liquid crystal fluorescence light scattering display screen containing micro-gelator as claimed in claim 1, it is characterized in that, described physics of liquid crystals gel is made up of the material of following quality proportioning: the gelator of the liquid crystal matrix compound of 88-91.5wt%, 5-6wt% azobenzene compound, 3-5wt% ultraviolet fluorescence powder and 0.5-1wt%.
7. one kind contains the preparation method of the liquid crystal fluorescence light scattering display screen of micro-gelator as claimed in claim 1, it is characterized in that, the preparation method of described liquid crystal fluorescence light scattering display screen comprises the steps: at the isotropic phase temperature of liquid crystal matrix compound, in liquid crystal matrix compound, azobenzene compound is mixed by the formula ratio of each component forming physics of liquid crystals gel, ultraviolet fluorescence powder and gelator, at 140 ~ 260 DEG C of temperature, abundant mixing 10 ~ 20min, treat that it dissolves each other, be incorporated in a device be made up of microslide after having dissolved while hot, utilize double faced adhesive tape THICKNESS CONTROL device thickness 2-3mm, and then be down to the gel with liquid crystal structure system of room temperature formation with photoluminescent property, 365nm UV-irradiation 20 ~ 60 minutes, the obtained liquid crystal fluorescence light scattering display screen containing micro-gelator.
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| CN106943967A (en) * | 2017-02-23 | 2017-07-14 | 浙江工业大学 | A kind of body temperature control physics of liquid crystals gel and its preparation and application |
| CN108659862A (en) * | 2018-04-28 | 2018-10-16 | 湘潭大学 | A kind of luminous liquid crystal physical gel material and preparation method thereof |
| CN109164620A (en) * | 2018-09-07 | 2019-01-08 | 浙江工业大学 | A kind of stretchable light scattering liquid crystal display device of full self-healing and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106943967A (en) * | 2017-02-23 | 2017-07-14 | 浙江工业大学 | A kind of body temperature control physics of liquid crystals gel and its preparation and application |
| CN106943967B (en) * | 2017-02-23 | 2020-05-26 | 浙江工业大学 | Body temperature control liquid crystal physical gel and preparation and application thereof |
| CN108659862A (en) * | 2018-04-28 | 2018-10-16 | 湘潭大学 | A kind of luminous liquid crystal physical gel material and preparation method thereof |
| CN109164620A (en) * | 2018-09-07 | 2019-01-08 | 浙江工业大学 | A kind of stretchable light scattering liquid crystal display device of full self-healing and preparation method thereof |
| CN109164620B (en) * | 2018-09-07 | 2021-05-18 | 浙江工业大学 | Full-self-healing stretchable liquid crystal light scattering display device and preparation method thereof |
| CN109897645A (en) * | 2019-03-26 | 2019-06-18 | 京东方科技集团股份有限公司 | A kind of liquid-crystal composition, display panel |
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