CN103627405A - Liquid crystal material composition, liquid crystal panel and method for reducing response time of liquid crystal panel - Google Patents
Liquid crystal material composition, liquid crystal panel and method for reducing response time of liquid crystal panel Download PDFInfo
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- CN103627405A CN103627405A CN201210306631.7A CN201210306631A CN103627405A CN 103627405 A CN103627405 A CN 103627405A CN 201210306631 A CN201210306631 A CN 201210306631A CN 103627405 A CN103627405 A CN 103627405A
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Abstract
The invention discloses a liquid crystal material composition, a liquid crystal panel containing the liquid crystal material composition and a method for reducing response time of the liquid crystal panel. The liquid crystal material composition comprises at least two smectic phase liquid crystal materials and at least two nematic phase liquid crystal materials different from the smectic phase materials. Based on the total weight of the liquid crystal material composition, the smectic phase liquid crystal materials have mass fraction of 10-40%, and the nematic phase liquid crystal materials have mass fraction of 60-90%. By mixing smectic phase liquid crystal materials and the nematic liquid crystal materials, the liquid crystal material composition can urge normal driving of the liquid crystal panel, control the temperature range of the liquid crystal, shorten the response time of the liquid crystal panel and improve the display quality of the liquid crystal panel.
Description
Technical field
The present invention relates to liquid crystal material and liquid-crystal display correlation technique; More specifically, relate to a kind of liquid crystal material composition, liquid crystal panel and the method for reduction liquid crystal panel time of response.
Background technology
Liquid crystal material is a kind ofly between the middle phase between solid and liquid, can flow, and has again the optical property of crystallization, is widely used at present in electronic product.In actual applications, often require liquid crystal material to there is certain stability, as at high temperature do not decomposed, do not occur chemical reaction, to guarantee the stable performance of working element.Particularly, in demonstration field, from mobile phone to TV, most widely used liquid crystal material is nematic liquid crystal material.The rigid element of nematic liquid crystal material molecule is arranged parallel to each other substantially, but its centroid position is unordered, do not form laminate structure, slide in liquid crystal molecule energy top to bottom, left and right, front and rear, only in molecular long axis direction, keep being parallel to each other or be bordering on parallelly, molecular interaction is faint.This molecular structure of nematic liquid crystal causes under electric field action, and liquid crystal molecule electron-withdrawing group is subject to electric field action and liquid crystal molecule direction is rotated, and rotates obviously, and molecule deflection angle is large, and the time of response needing is thus longer.
Smectic liquid crystal is the another kind of form of liquid crystal material, smectic liquid crystal is by bar-shaped or strip molecular composition, reactive force between molecule side is greater than the reactive force between molecular end, and molecule stratification is arranged, in layer, molecular long axis is parallel to each other, and its direction can become oblique arrangement perpendicular to aspect or with aspect.When smectic liquid crystal is subject to electric field action, because Intermolecular Forces is larger, molecule deflection angle is little, and response speed is very fast, but smectic liquid crystal is due to molecular arrangement mode and higher phase transition temperature, applies less in field of liquid crystal display.
The electron-withdrawing power of liquid crystal molecule end electron-withdrawing group and the power of liquid crystal molecule between reactive force, and the viscosity of liquid crystal material, unit structure all can exert an influence to the time of response of liquid crystal panel.How to utilize smectic liquid crystal material to reduce the research of liquid crystal panel time of response less, not yet have so far clearly feasible technical scheme open.
Summary of the invention
Therefore, for the problems referred to above, propose the present invention, the object of this invention is to provide a kind of liquid crystal material composition, can be when impelling liquid crystal panel driven, control the temperature range of liquid crystal material composition, and the time of response of reducing liquid crystal panel, improve the display quality of liquid crystal panel.
According to an aspect of the present invention, the invention provides a kind of liquid crystal material composition, comprise the nematic liquid crystal material that at least two kinds of smectic liquid crystal materials are different from described smectic liquid crystal material type with at least two kinds.
Described smectic liquid crystal material is the compound of the cyano-containing that represented by following general formula I:
In general formula I, x be 0 or 1, y be 1 to 4 integer, and n is 3 to 10 integer; And described nematic liquid crystal material is the fluorochemicals being represented by following general formula I I:
In general formula I I, L and X are identical or different, and are cyclohexylidene or phenylene independently of one another; M is 1 to 3 integer, and n is 3 to 10 integer.
According to another aspect of the present invention, the smectic liquid crystal scope of described smectic liquid crystal material is-10～60 ℃, and the nematic liquid crystal scope of described nematic liquid crystal material is-10～90 ℃; And the liquid crystal range of described liquid crystal material composition is-20～80 ℃.
According to a further aspect of the invention, described liquid crystal material composition, before being added dropwise to described liquid crystal panel, is extremely separated through standing.
Another aspect of the present invention further provides a kind of liquid crystal panel that comprises described liquid crystal material composition.
According to a further aspect of the invention, a kind of method that reduces the liquid crystal panel time of response is provided, has said method comprising the steps of: the nematic liquid crystal material mixing that at least two kinds of smectic liquid crystal materials are different from described smectic liquid crystal material type with at least two kinds have made liquid crystal material composition; Described liquid crystal material composition is standing so that described smectic liquid crystal material and described nematic liquid crystal material are separated; Described liquid crystal material composition after described being separated is dropped to the array substrate of described liquid crystal panel.
The method of described reduction liquid crystal panel time of response is further included in before described liquid crystal material composition drops to described array substrate, and described liquid crystal material composition is carried out to deaeration processing.
Wherein, the compound that described smectic liquid crystal material contains at least two kinds of cyano-containings that represented by following general formula I:
In general formula I, x be 0 or 1, y be 1 to 4 integer, and n is 3 to 10 integer; And described nematic liquid crystal material contains at least two kinds of fluorochemicalss that represented by following general formula I I:
In general formula I I, L and X are identical or different, and are cyclohexylidene or phenylene independently of one another; M is 1 to 3 integer, and n is 3 to 10 integer.
Total mass based on described liquid crystal material composition, the massfraction of described smectic liquid crystal material is 10～40%, the massfraction of described nematic liquid crystal material is 60～90%.
By by dissimilar smectic liquid crystal material and nematic liquid crystal material mixing, described liquid crystal material composition of the present invention can impel liquid crystal panel driven, control the liquid crystal temperature range of liquid crystal material composition simultaneously, and the time of response of reducing liquid crystal panel, improve the display quality of liquid crystal panel.
Accompanying drawing explanation
Fig. 1 is according to the polarizing microscope figure of the smectic liquid crystal material of embodiment of the present invention and nematic liquid crystal material;
Fig. 2 is the view when liquid crystal panel not being applied to voltage according to the liquid crystal material composition of embodiment of the present invention;
Fig. 3 is the view when liquid crystal panel is applied to voltage according to the liquid crystal material composition of embodiment of the present invention;
Fig. 4 is for utilizing the method flow diagram that reduces the liquid crystal panel time of response according to the liquid crystal material composition of embodiment of the present invention;
Fig. 5 is to the transmitance-time plot recording according to the liquid crystal panel of embodiment and comparative example.
Embodiment
An embodiment of the invention provide a kind of liquid crystal material composition, comprise the nematic liquid crystal material that at least two kinds of smectic liquid crystal materials are different from above-mentioned smectic liquid crystal material type with at least two kinds.
Referring to Fig. 1, Fig. 1-A and Fig. 1-B are respectively the polarizing microscope photo of above-mentioned smectic liquid crystal material and nematic liquid crystal material.From Fig. 1-A, can find out that the texture of smectic liquid crystal is conical texture, compare with Fig. 1-A, the texture of the nematic liquid crystal shown in Fig. 1-B is thread texture.By Fig. 1-A and Fig. 1-B, can obviously find out, smectic liquid crystal and nematic liquid crystal are two kinds of different phases of liquid crystal.By different ratios, mix, can make the liquid crystal of these two kinds of different phases occur being separated.The mixture of smectic liquid crystal and nematic liquid crystal can be applied to field of liquid crystal display thus.
In the present invention, adopt smectic liquid crystal material and the nematic liquid crystal material of different types of structure, this liquid crystal material composition for example can be applied to, in most of display formats: twisted-nematic (TN), plane conversion (IPS) and fringe field switching technique (FFS) isotype.In FFS display format, this liquid crystal material composition can better be applied, and first, smectic liquid crystal is aligned is planar orientation, and liquid crystal molecule is parallel to substrate and arranges; Secondly, direction of an electric field is followed fringe field switch effect, under ON state or OFF state effect, can reduce the time of response of liquid crystal panel.
The compound that above-mentioned smectic liquid crystal material contains at least two kinds of cyano-containings that represented by following general formula I:
In general formula I, x be 0 or 1, y be 1 to 4 integer, and n is 3 to 10 integer.
Above-mentioned nematic liquid crystal material contains at least two kinds of fluorochemicalss that represented by following general formula I I:
In general formula I I, L and X are identical or different, and are cyclohexylidene or phenylene independently of one another; M is 1 to 3 integer, and n is 3 to 10 integer.
By above general formula I and II, can be found out, in liquid crystal material composition of the present invention, in the molecular structure of smectic liquid crystal material, contain the group that phenylene, biphenylene, cyclohexylidene etc. are given molecular structure rigidity, and its end group electron-withdrawing group be cyano group.In smectic liquid crystal material molecule, rigid radical is more, and the rigidity of molecular structure is stronger, and Intermolecular Forces is just larger, correspondingly also faster to the response of electric field.
With respect to above-mentioned smectic liquid crystal material, in the molecular structure of nematic liquid crystal material, except also thering is the rigid radicals such as phenylene, cyclohexylidene, in the middle of molecular structure, also contain the ester group of giving molecular structure flexibility, and its end group electron-withdrawing group is fluorine.The combined influence of the reactive force Shou Ge functional group between nematic liquid crystal material molecule, wherein electrophilic fluorine atom amount is more, the electron-withdrawing power of liquid crystal molecule is stronger, Intermolecular Forces is just larger, and the alkyl of ester group in molecular structure and another end makes nematic liquid crystal molecule have flexibility, intermolecular reactive force reduces.On the whole, the reactive force between nematic liquid crystal material molecule is less than the reactive force between above-mentioned smectic liquid crystal material molecule.
Therefore, above-mentioned smectic liquid crystal material and the nematic liquid crystal material with different types of structure mixed with certain massfraction, impel in the inner phenomenon of phase separation that occurs two kinds of liquid crystal materials of liquid crystal material composition, be that smectic liquid crystal and nematic liquid crystal subregion exist, thereby in different regions, embody respectively the characteristic of smectic liquid crystal and nematic liquid crystal.Because smectic liquid crystal molecule is stratiform, between molecule and molecule, reactive force is stronger, and under electric field action, molecule deflection angle is little, and therefore fast response time utilizes this feature of smectic liquid crystal, the time of response that can reduce panel.
For the specific examples of the compound of the cyano-containing of above-mentioned smectic liquid crystal material, are the mixture of at least two kinds of the compound that represents of following general formula, are preferably the wherein mixture of 2 kinds to 6 kinds, and these compounds are with balanced mix:
Wherein, n is 3,4,5,6,7,8,9 or 10 integer independently of one another, is preferably 4 to 8 integer.
The smectic liquid crystal scope of the smectic liquid crystal material that the compound of above-mentioned cyano-containing obtains can be-10～60 ℃, is preferably-10～40 ℃.
For the specific examples of the fluorochemicals of above-mentioned nematic liquid crystal material, are the mixture of at least two kinds of the compound that represents of following general formula, are preferably the wherein mixture of 2 kinds to 6 kinds, and these compounds are with balanced mix:
Wherein, n is 3,4,5,6,7,8,9 or 10 integer independently of one another, is preferably 4 to 8 integer.
The nematic liquid crystal scope of the nematic liquid crystal material that above-mentioned fluorochemicals is mixed to get can be-10～90 ℃, is preferably-10～70 ℃.
By conventional blending means, for example stir, by above-mentioned smectic liquid crystal material and nematic liquid crystal material mixing, make the liquid crystal material composition that can be used for reducing the liquid crystal panel time of response.Wherein, the total mass based on liquid crystal material composition, the massfraction of smectic liquid crystal material can be 10～40%, is preferably 15～35%, and more preferably 30%; The massfraction of nematic liquid crystal material can be 60～90%, is preferably 65～85%, and more preferably 70%.
Above-mentioned nematic liquid crystal material is mixed by above-mentioned massfraction with smectic liquid crystal material, and the liquid crystal range of the liquid crystal material composition making can be-20～80 ℃, preferably-10～60 ℃.By after the standing phase-splitting at normal temperatures of this liquid crystal material composition, be applied in liquid crystal panel, first it can impel liquid crystal panel driven, controls the temperature range of liquid crystal, and then reduce the time of response of liquid crystal panel, and improve the display quality of liquid crystal panel.When the massfraction of smectic liquid crystal material is higher than 40% time, the driving voltage of liquid crystal panel is too high, can not driven; And when the massfraction of smectic liquid crystal material is lower than 10% time, reduce the DeGrain of liquid crystal panel time of response.
According to another implementation of the invention, provide a kind of liquid crystal panel that comprises above-mentioned liquid crystal material composition.With reference to Fig. 2, this liquid crystal panel comprises color membrane substrates 1, planar orientation layer 2, comprises the liquid crystal material composition of nematic liquid crystal material 3 and smectic liquid crystal material 4, planar orientation layer 5, public electrode 6, insulation layer 7, pixel electrode 8 and glass substrate 9.When liquid crystal panel inner side is during through planar orientation, smectic liquid crystal molecule and nematic liquid crystal molecular long axis all can be parallel to substrate, because smectic liquid crystal and nematic liquid crystal molecular structure have difference, and two kinds of liquid crystal material types also have difference, therefore there is the phenomenon of mesomorphic phase separation, as 3 regions for nematic liquid crystal gathering in Fig. 2,4 regions for smectic liquid crystal gathering.
Fig. 3 applies the figure after electric field to the liquid crystal panel shown in Fig. 2, as seen from Figure 3, array substrate adopts FFS display format, after energising, liquid crystal molecule can be arranged along direction of an electric field, nematic liquid crystal region is because reactive force between molecule is less, easily be subject to the impact of electric field, rotate effect comparatively obvious, smectic liquid crystal region, because reactive force between molecule is larger, is not easy to rotate, but, liquid crystal molecule easily returns to original state, thereby in ON state and OFF state switching process, the time of response of panel reduces.
According to another embodiment of the invention, a kind of method that reduces the time of response of liquid crystal panel is provided, comprises the following steps: the nematic liquid crystal material mixing that at least two kinds of smectic liquid crystal materials are different from smectic liquid crystal material type with at least two kinds make liquid crystal material composition; Above-mentioned liquid crystal material composition is standing so that smectic liquid crystal material and nematic liquid crystal material are separated; Liquid crystal material composition after being separated is dropped to the array substrate of liquid crystal panel.Wherein, the liquid crystal material composition using in the method is as above limited.
Aforesaid method also can be included in before liquid crystal material composition drops to array substrate, preferably liquid crystal material composition is carried out to deaeration processing; And alternatively liquid crystal panel internal surface is carried out to orientation process, such as forming oriented layer with alignment agents such as polyimide.
Further, aforesaid method also can be included in and drip after liquid crystal material composition, sealed plastic box is coated on color membrane substrates, and color membrane substrates and dropping are had to the array substrate vacuum of liquid crystal material composition to box.
Fig. 4 shows the method for the reduction liquid crystal panel time of response of an embodiment according to the present invention, can comprise: smectic phase liquid crystal material and the blend of nematic liquid crystal material are made to liquid crystal material composition; By standing smectic liquid crystal material and the nematic liquid crystal material of making, be separated; Liquid crystal material composition after being separated is carried out to deaeration processing; Color membrane substrates and array substrate are carried out to orientation process; Liquid crystal material composition after deaeration is dropped on array substrate; Color membrane substrates and array substrate in batch are dressed up to liquid crystal cell and carried out box., before carrying out box, apply conventional sealed plastic box on color membrane substrates herein, for example epoxy resin, then carries out vacuum to box.
In aforesaid method, the deaeration of liquid crystal material composition is processed the conventional method in available this area and is carried out, for example vacuum defoamation 1 to 10 hour in deaerator, preferably 3 to 6 hours.In addition, the orientation process of two substrates of liquid crystal panel can be with conventional alignment agent, and for example polyimide alignment agent forms oriented layer, and carries out through friction.
Embodiment
By following smectic liquid crystal compound and nematic liquid crystal compound respectively balanced mix make smectic liquid crystal material and nematic liquid crystal material.
Smectic liquid crystal compound
Nematic liquid crystal compound
Then, above-mentioned smectic liquid crystal material and nematic liquid crystal material, respectively with 30% and 70% massfraction blend, are made to liquid crystal material composition after stirring.Liquid crystal material composition after stirring is at room temperature standing, so that smectic liquid crystal and nematic liquid crystal are separated.Liquid crystal material composition after being separated is placed to and in defoamer, carries out deaeration processing.Coated with polyimide alignment agent on 1 square inch of big or small color membrane substrates and array substrate respectively, and utilize flannelette friction orientation, aligned is planar orientation.Minim by the liquid crystal material composition after deaeration with 10mg is added on the array substrate through orientation process, and epoxy resin sealed plastic box is coated on color membrane substrates.Utilize vacuum, to the method for box, array substrate and color membrane substrates are carried out to vacuum to box, keeping box gap is 5 μ m, completes thus the making of liquid crystal panel sample 1.After to box, liquid crystal comprehensive parameter tester (LCT-5016) for liquid crystal panel is detected, the transmitance-time curve recording is as shown in Figure 5.
Comparative example
In the mode identical with embodiment, make liquid crystal panel sample 2, difference is only to use the nematic liquid crystal material of above-mentioned composition to replace liquid crystal material composition to drop to array substrate, and the transmitance-time curve recording as shown in Figure 5.
By the curve shown in Fig. 5, can be found out the T of sample 1
openfor 10ms, T
closefor 9ms, global response time T=T
open+ T
close=19ms.In contrast than the T of sample 2
openfor 18ms, T
closefor 13ms, global response time T=T
open+ T
close=31ms.By this experimental result, can find out significantly with the liquid crystal panel sample 2 that does not contain smectic liquid crystal material and compare, add the liquid crystal panel sample 1 of smectic liquid crystal material to there is the significantly reduced time of response.
Claims (15)
1. a liquid crystal material composition, is characterized in that, described liquid crystal material composition comprises the nematic liquid crystal material that at least two kinds of smectic liquid crystal materials are different from described smectic liquid crystal material type with at least two kinds.
2. liquid crystal material composition according to claim 1, is characterized in that, described smectic liquid crystal material is the compound of the cyano-containing that represents of general formula I:
general formula I
In general formula I, x be 0 or 1, y be 1 to 4 integer, and n is 3 to 10 integer.
3. liquid crystal material composition according to claim 1, is characterized in that, described nematic liquid crystal material is the fluorochemicals that general formula I I represents:
In general formula I I, L and X are identical or different, and are cyclohexylidene or phenylene independently of one another; M is 1 to 3 integer, and n is 3 to 10 integer.
4. liquid crystal material composition according to claim 1, it is characterized in that, the massfraction of described smectic liquid crystal material is 10～40% of described liquid crystal material composition total mass, and the massfraction of described nematic liquid crystal material is 60～90% of described liquid crystal material composition total mass.
5. liquid crystal material composition according to claim 1, is characterized in that, the smectic liquid crystal scope of described smectic liquid crystal material is-10～60 ℃, and the nematic liquid crystal scope of described nematic liquid crystal material is-10～90 ℃.
6. liquid crystal material composition according to claim 1, is characterized in that, the liquid crystal range of described liquid crystal material composition is-20～80 ℃.
7. liquid crystal material composition according to claim 1, is characterized in that, described liquid crystal material composition, before being added dropwise to described liquid crystal panel, is extremely separated through standing.
8. a liquid crystal panel, is characterized in that, comprises according to the liquid crystal material composition described in any one in claim 1 to 7.
9. a method that reduces the liquid crystal panel time of response, is characterized in that, said method comprising the steps of:
The nematic liquid crystal material mixing that at least two kinds of smectic liquid crystal materials are different from described smectic liquid crystal material type with at least two kinds make liquid crystal material composition;
Described liquid crystal material composition is standing, described smectic liquid crystal material and described nematic liquid crystal material are separated;
Described liquid crystal material composition after described being separated is dropped on the array substrate of described liquid crystal panel.
10. the method for reduction liquid crystal panel time of response according to claim 9, is characterized in that, described smectic liquid crystal material is the compound of the cyano-containing that represents of general formula I:
general formula I
In general formula I, x be 0 or 1, y be 1 to 4 integer, and n is 3 to 10 integer.
The method of 11. reduction liquid crystal panel time of response according to claim 9, is characterized in that, described nematic liquid crystal material is the fluorochemicals that general formula I I represents:
general formula I I
In general formula I I, L and X are identical or different, and are cyclohexylidene or phenylene independently of one another; M is 1 to 3 integer, and n is 3 to 10 integer.
The method of 12. reduction liquid crystal panel time of response according to claim 9, it is characterized in that, the massfraction of described smectic liquid crystal material is 10～40% of described liquid crystal material composition total mass, and the massfraction of described nematic liquid crystal material is 60～90% of described liquid crystal material composition total mass.
The method of 13. reduction liquid crystal panel time of response according to claim 9, is characterized in that, the smectic liquid crystal scope of described smectic liquid crystal material is-10～60 ℃, and the nematic liquid crystal scope of described nematic liquid crystal material is-10～90 ℃.
The method of 14. reduction liquid crystal panel time of response according to claim 9, is characterized in that, the liquid crystal range of described liquid crystal material composition is-20～80 ℃.
The method of 15. reduction liquid crystal panel time of response according to claim 9, is characterized in that, before described liquid crystal material composition drops to described array substrate, described liquid crystal material composition is carried out to deaeration processing.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130783A (en) * | 2014-07-23 | 2014-11-05 | 北京大学 | Liquid crystal composition capable of transition from smectic phase to chiral nematic phase |
| JP2016027110A (en) * | 2014-06-23 | 2016-02-18 | 国立大学法人 千葉大学 | Liquid crystal composition and liquid crystal display element |
| CN105820823A (en) * | 2015-01-08 | 2016-08-03 | 江苏和成显示科技股份有限公司 | Display medium and display apparatus |
| CN107577067A (en) * | 2017-08-18 | 2018-01-12 | 深圳市国华光电科技有限公司 | A kind of light modulation device and its light regulation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179577A (en) * | 1983-03-29 | 1984-10-12 | Canon Inc | Liquid crystal composition |
| JPS6211791A (en) * | 1985-07-10 | 1987-01-20 | Hitachi Ltd | Liquid crystal display device of heat writing |
| EP0310620B1 (en) * | 1986-06-23 | 1992-09-02 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern | Chiral liquid crystal compounds |
| CN101354460A (en) * | 2008-09-22 | 2009-01-28 | 北京科技大学 | Method for preparing high molecule steady liquid-crystal film material with wide wave reflection |
| CN102508378A (en) * | 2011-11-30 | 2012-06-20 | 北京科技大学 | Method for improving planar orientation of cholesteric liquid crystal based on phase transition between smectic phase and cholesteric phase |
-
2012
- 2012-08-24 CN CN201210306631.7A patent/CN103627405B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179577A (en) * | 1983-03-29 | 1984-10-12 | Canon Inc | Liquid crystal composition |
| JPS6211791A (en) * | 1985-07-10 | 1987-01-20 | Hitachi Ltd | Liquid crystal display device of heat writing |
| EP0310620B1 (en) * | 1986-06-23 | 1992-09-02 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern | Chiral liquid crystal compounds |
| CN101354460A (en) * | 2008-09-22 | 2009-01-28 | 北京科技大学 | Method for preparing high molecule steady liquid-crystal film material with wide wave reflection |
| CN102508378A (en) * | 2011-11-30 | 2012-06-20 | 北京科技大学 | Method for improving planar orientation of cholesteric liquid crystal based on phase transition between smectic phase and cholesteric phase |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016027110A (en) * | 2014-06-23 | 2016-02-18 | 国立大学法人 千葉大学 | Liquid crystal composition and liquid crystal display element |
| CN104130783A (en) * | 2014-07-23 | 2014-11-05 | 北京大学 | Liquid crystal composition capable of transition from smectic phase to chiral nematic phase |
| CN104130783B (en) * | 2014-07-23 | 2015-10-07 | 北京大学 | A kind of have the liquid-crystal composition of smectic phase to chirality nematic Phase |
| CN105820823A (en) * | 2015-01-08 | 2016-08-03 | 江苏和成显示科技股份有限公司 | Display medium and display apparatus |
| CN105820823B (en) * | 2015-01-08 | 2018-10-23 | 江苏和成显示科技有限公司 | Display medium and display device |
| CN107577067A (en) * | 2017-08-18 | 2018-01-12 | 深圳市国华光电科技有限公司 | A kind of light modulation device and its light regulation method |
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