CN104560057B - Liquid-crystal composition - Google Patents
Liquid-crystal composition Download PDFInfo
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- CN104560057B CN104560057B CN201410855249.0A CN201410855249A CN104560057B CN 104560057 B CN104560057 B CN 104560057B CN 201410855249 A CN201410855249 A CN 201410855249A CN 104560057 B CN104560057 B CN 104560057B
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Abstract
The invention discloses the application in liquid crystal display of a kind of liquid-crystal composition and liquid-crystal composition.This liquid-crystal composition has positive dielectric anisotropic, the liquid-crystal composition excellent performance that the present invention provides, this liquid-crystal composition refractive index performance higher than 0.100 and less than 0.120, and the liquid crystal panel of the thick quickly response of the lowest box, the composition of the present invention has broad application prospects and using value in liquid crystal display, particularly suitable quick response, the active matrix TN TFT of low box display picture thick, high, IPS TFT, FFS TFT display.The liquid-crystal composition that the present invention provides is made up of following liquid-crystal compounds:
Description
Technical field
The present invention relates to field of liquid crystal display, be specifically related to a kind of liquid-crystal composition and the liquid crystal comprising this liquid-crystal composition
Show device.
Technical background
At present, it is increasingly wider that the range of application of liquid-crystal compounds is expanded, and it can be applicable to polytype display, electric light
In device, sensor etc..Liquid-crystal compounds for above-mentioned display field of a great variety, wherein nematic liquid crystal application is
For extensively.Nematic liquid crystal have been applied in passive TN, STN matrix display and there is tft active matrix system in.
For thin-film transistor technologies (TFT-LCD) application, although market is the hugest in recent years, technology is also
Gradually ripe, but the requirement of Display Technique is also constantly being improved by people, especially in terms of realizing quick response, and
High display picture aspect.Liquid crystal material is as one of important photoelectron material of liquid crystal display, to improving liquid crystal display
The effect that performance is important.
As liquid crystal material, need there is good chemically and thermally stability and to electric field and the stability of electromagnetic radiation.And
As thin-film transistor technologies (TFT-LCD) liquid crystal material, do not need only have as outside upward stability, also should have relatively
Wide nematic temperature range, suitable birefringence anisotropy, the highest resistivity, good anti-ultraviolet property,
The performances such as high electric charge conservation rate.
Along with the maturation of thin film transistor liquid crystal display screen technology, large scale liquid crystal display had obtained fast development in recent years, tool
The product of standby ultra high-definition (UHD) resolution ratio oversize emerges in an endless stream.TFT-LCD industry gradually moves towards more advanced lines.To height
For resolution ratio product, along with the increase Pixel Dimensions of PPI reduces, the aperture opening ratio of panel strongly reduces, now in order to ensure panel
Brightness need to increase backlight illumination or backlight quantity, but this can be significantly increased the power consumption of panel.So to high-resolution products
For, in order to reduce power consumption, it is necessary to research improves method or the technology of aperture opening ratio.For dynamic menu display application, eliminate aobvious
Show picture ghost and hangover, it is desirable to liquid crystal has response speed quickly, therefore it is required that liquid crystal has high index of refraction, the high degree of order,
Thus it is thick to have low box, quickly responds, high PPI, high-quality display picture.
Summary of the invention
It is an object of the invention to provide a kind of positive dielectric liquid crystal composition, have that high electric charge conservation rate, response time be fast, Gao You
Sequence degree, this type of monomer liquid crystal synthesis technique is easier to, low cost simultaneously.
In order to realize the purpose of the present invention, the present invention provides the positive dielectric liquid crystal composition of a kind of different range, wide nematic phase
Scope, higher optical anisotropy (25 DEG C of condition refractive indexes are less than or equal to 0.120 more than or equal to 0.100).
Liquid crystal compound provided by the present invention, comprises shown in compound shown in one or more formulas I, one or more formulas II
Compound shown in compound, one or more formulas IV and one or more formulas V institute shown in compound, one or more formulas III
Show compound
Wherein
Y1、Y2、Y3、Y4、Y5Represent H, F or trifluoromethoxy independently of one another；
Ring A1, ring A2Represent anti-form-1,4-cyclohexylidene or 1,4-phenylene independently of one another；
Ring A3RepresentOr
R0、R1、R2、R3、R4Represent independently of one another carbon number be the alkyl of 1-6, carbon number be 1-6 alkoxyl or
Carbon number is the alkenyl of 2-6；
M, n represent 0 or 1 independently of one another.
Liquid-crystal composition provided by the present invention, the compound shown in described formula I to formula V, preferably Y1、Y2、Y3、Y4、Y5Table
Show the compound of F.
Compound shown in described formula I to formula V, the most described R1、R2、R3、R4Represent that carbon number is 1-5 independently of one another
Alkyl, carbon number be the alkoxyl of 1-5, described R0Represent carbon number be the alkenyl of 2-5, carbon number be 1-5
Alkyl or the compound of alkoxyl that carbon number is 1-5.
In described liquid-crystal composition, the weight percentage of compound shown in one or more formulas I described is preferably
0.5%-3.0%, the weight percentage of compound shown in one or more formulas II described is preferably 45.0%-55.0%, and described one
Plant or shown in multiple formula III, the weight percentage of compound is preferably 19%-30%, compound shown in one or more formulas IV described
Weight percentage be preferably 4%-15%, the weight percentage of compound shown in one or more formulas V described be preferably
4%-20%.
Liquid-crystal composition provided by the present invention is such as applied in FFS-TFT, IPS-TFT, it is not necessary to add optically active substance；
During described liquid-crystal composition is such as applied to TN-TFT, and passive drive shows, need to add mass ratio is described formula I-V institute
The quality sum of the compound shown be more than 0%, the optically active compounds less than or equal to 1%, the optically active compounds of the most most 1%.
Liquid-crystal composition provided by the present invention can apply in liquid crystal display cells and liquid crystal display.
Present invention also offers a kind of liquid crystal display, described liquid crystal display comprises arbitrary described liquid in claim 1-6
Crystal composite.
The liquid-crystal composition of the present invention can use conventional method to produce, the mixing of two or more liquid-crystal compounds as at height
Prepared by temperature lower mixing different component method soluble in one another, wherein, be dissolved in by liquid-crystal composition for this compound is molten
In agent and mix, the most under reduced pressure distill out this solvent；Or the liquid-crystal composition of the present invention can be according to conventional preparation side
Prepared by method.
The Nematic phase liquid crystal composition excellent performance obtained by the present invention, has different voltage, high resistivity and electricity
Pressure conservation rate, high index, the performance characteristics of larger value of k.By the adjustment to each constituent content, of the present invention
Nematic phase liquid crystal composition can have different threshold voltages and birefringent characteristic, conventionally used each of client can be made
Individual system, it is simple to use under different liquid crystal cells thickness and different driving voltage.Meanwhile, in embodiment, liquid crystal compound also shows
Go out larger value of k, fast-response time, bigger optical anisotropy and the dielectric anisotropy of different size scope, therefore may be used
Should have the Electro-Optical Display of active array addressing, be also applicable in display and the display element of non-active matrix simultaneously.
The liquid-crystal composition of the present invention, may be used for Active Matrix Display, preferably by the matrix of thin film transistor (TFT) (TFT)
Addressing, is particularly well-suited to manufacture active matrix TN-TFT, IPS-TFT liquid crystal display cells and the liquid crystal display of quickly response,
Fall within protection scope of the present invention.
Percentage in present specification is weight percentage, and temperature is degree Celsius (DEG C).As illustrated without other, other symbols
Concrete meaning and test condition are as follows:
Cp (DEG C) represents the clearing point of liquid crystal.
△ n is optical anisotropy, and test condition is, 589nm, 25 DEG C.
△ ε is dielectric anisotropy, △ ε=ε∥-ε⊥, wherein, ε∥For being parallel to the dielectric constant of molecular axis, ε⊥For
Being perpendicular to the dielectric constant of molecular axis, test condition is 25 DEG C；1KHz；HP4284A；5.2 microns of left-handed boxes of TN.
τ: the response time [ms], tester be DMS-501, test condition is 25 ± 0.5 DEG C, 4.0 microns of TN of testing cassete
Left-handed box.
V10For the optical threshold voltage [v] of liquid crystal, V90For the saturation voltage value [v] of liquid crystal, test condition is 5.2 microns of TN
Left-handed box, 25 DEG C.
It is embodied as row
Below in conjunction with specific embodiment, the present invention is further elaborated, but the following examples are the example of the present invention, this
Bright it is not limited to following example.In the case of without departing from present subject matter or scope, by the liquid crystal combination in the present invention
Can also revise or improve out by the adjustment to each constituent content there is different threshold value, clearing point, birefringent characteristic in thing
Liquid crystal compound, this it will be apparent to those skilled in the art that.Described method is conventional method if no special instructions.
The each composition used below in an example, all can be synthesized by known method, or pass through business
Approach obtains.These synthetic technologys are conventional, and obtained each liquid-crystal compounds meets electrical type compound standard after tested.
According to the proportioning of each liquid-crystal composition of following example regulation, prepare liquid-crystal composition.The system of described liquid-crystal composition
Standby is to carry out according to the conventional method of this area, as taked the mode ratio according to the rules mixing such as heating, ultrasonic wave, suspension
Prepare.
Prepare and study the liquid-crystal composition provided in the following example.It is filled with entering between liquid crystal display two substrates simultaneously
Row performance test, is shown below composition and its performance parameter test result of each liquid-crystal composition.
Embodiment 1
Be configured to the liquid-crystal composition of the present invention by each compound listed in table 1 and percetage by weight, it is filled in liquid crystal
Showing and carry out performance test between device two substrates, test data are as shown in the table:
Implement row 2
Be configured to the liquid-crystal composition of the present invention by each compound listed in table 2 and percetage by weight, it is filled in liquid crystal
Showing and carry out performance test between device two substrates, test data are as shown in the table:
Implement row 3
Be configured to the liquid-crystal composition of the present invention by each compound listed in table 3 and percetage by weight, it is filled in liquid crystal
Showing and carry out performance test between device two substrates, test data are as shown in the table:
Implement row 4
Be configured to the liquid-crystal composition of the present invention by each compound listed in table 4 and percetage by weight, it is filled in liquid crystal
Showing and carry out performance test between device two substrates, test data are as shown in the table:
The present invention relates to composition and there is bigger optical anisotropy Δ n, relatively low threshold voltage, the preferable degree of order, can
To realize the quick response of liquid crystal display.
Claims (8)
1. a liquid-crystal composition, it is characterised in that: described liquid-crystal composition comprises compound shown in compound shown in compound, one or more formulas IV shown in compound, one or more formulas III shown in compound shown in one or more formulas I, one or more formulas II and one or more formulas V
Wherein
Y1、Y2、Y3、Y4、Y5Represent H, F or trifluoromethoxy independently of one another；
Ring A1, ring A2Represent anti-form-1,4-cyclohexylidene or 1,4-phenylene independently of one another；
Ring A3Represent
R0、R1、R2、R3、R4Represent that carbon number is that the alkyl of 1-6, carbon number are the alkoxyl of 1-6 or carbon number is the alkenyl of 2-6 independently of one another；
M, n represent 0 or 1 independently of one another.
Liquid-crystal composition the most according to claim 1, it is characterised in that: described Y1、Y2、Y3、Y4、Y5Represent F.
Liquid-crystal composition the most according to claim 1, it is characterised in that: described R1、R2、R3、R4Represent independently of one another carbon number be the alkyl of 1-5, carbon number be the alkoxyl of 1-5, described R0Represent that carbon number is that the alkenyl of 2-5, carbon number are the alkyl of 1-5 or carbon number is the alkoxyl of 1-5.
4. according to described liquid-crystal composition arbitrary in claim 1-3, it is characterized in that: in described liquid-crystal composition, shown in one or more formulas I described, the weight percentage of compound is 0.5%-3.0%, shown in one or more formulas II described, the weight percentage of compound is 45.0%-59.0%, shown in one or more formulas III described, the weight percentage of compound is 19%-30%, shown in one or more formulas IV described, the weight percentage of compound is 4%-15%, and shown in one or more formulas V described, the weight percentage of compound is 4%-20%.
5. according to described liquid-crystal composition arbitrary in claim 1-3, it is characterised in that: described liquid-crystal composition is applied in FFS-TFT, IPS-TFT, it is not necessary to add optically active substance；During described liquid-crystal composition is applied to TN-TFT, and passive drive shows, the optically active compounds of the quality sum most 1% that mass ratio is the compound shown in described formula I-V need to be added.
Liquid-crystal composition the most according to claim 4, it is characterised in that: described liquid-crystal composition is applied in FFS-TFT, IPS-TFT, it is not necessary to add optically active substance；During described liquid-crystal composition is applied to TN-TFT, and passive drive shows, the optically active compounds of the quality sum most 1% that mass ratio is the compound shown in described formula I-V need to be added.
7. arbitrary described liquid-crystal composition application in liquid crystal display cells and liquid crystal display in claim 1-6.
8. a liquid crystal display, it is characterised in that: described liquid crystal display comprises arbitrary described liquid-crystal composition in claim 1-6.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544893A (en) * | 2009-05-07 | 2009-09-30 | 石家庄永生华清液晶有限公司 | Liquid crystal composition and liquid crystal display element |
| CN101652453A (en) * | 2007-02-19 | 2010-02-17 | 智索株式会社 | Liquid-crystal composition and liquid crystal display device |
| CN103320142A (en) * | 2012-02-15 | 2013-09-25 | 默克专利股份有限公司 | Liquid-crystalline medium |
| CN103555345A (en) * | 2013-08-30 | 2014-02-05 | 石家庄诚志永华显示材料有限公司 | Preparation and application of novel liquid crystal compound |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101652453A (en) * | 2007-02-19 | 2010-02-17 | 智索株式会社 | Liquid-crystal composition and liquid crystal display device |
| CN101544893A (en) * | 2009-05-07 | 2009-09-30 | 石家庄永生华清液晶有限公司 | Liquid crystal composition and liquid crystal display element |
| CN103320142A (en) * | 2012-02-15 | 2013-09-25 | 默克专利股份有限公司 | Liquid-crystalline medium |
| CN103555345A (en) * | 2013-08-30 | 2014-02-05 | 石家庄诚志永华显示材料有限公司 | Preparation and application of novel liquid crystal compound |
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