CN108239546A - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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Publication number
CN108239546A
CN108239546A CN201611203756.1A CN201611203756A CN108239546A CN 108239546 A CN108239546 A CN 108239546A CN 201611203756 A CN201611203756 A CN 201611203756A CN 108239546 A CN108239546 A CN 108239546A
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Prior art keywords
fluoro
liquid crystal
carbon atom
atom number
display device
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CN108239546B (en
Inventor
刘云云
姚利芳
陈昭远
韩文明
丁文全
贺笛
张鹤鸣
杨亚非
王莉
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Jiangsu He Cheng Display Technology Co Ltd
Jiangsu Hecheng Display Technology Co Ltd
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Jiangsu He Cheng Display Technology Co Ltd
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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
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
    • 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making

Abstract

A kind of liquid crystal display device, the liquid crystal display device includes upper substrate, lower substrate, colour filter, top electrode, lower electrode, upper alignment films, lower alignment films, and liquid crystal material, the liquid crystal material layer is held between alignment films and lower alignment films, the lower electrode is the pixel electrode formed by low-temperature polysilicon silicon materials, liquid crystal molecule being oriented to relative to upper substrate in no applied voltage in the liquid crystal material, lower substrate general parallel orientation, the liquid crystal material is nematic phase liquid crystal composition, the liquid crystal display device, which includes, has suitable refractive index and dielectric anisotropy, relatively low viscosity, the liquid crystal material of relatively low threshold voltage, the liquid crystal display device has brightness bigger, resolution ratio higher, power consumption is lower, the advantages of better reliability.

Description

Liquid crystal display device
Technical field
The present invention relates to liquid crystal display devices, especially relate to comprising liquid crystal low temperature polycrystalline silicon as pixel electrode layer Display device.
Background technology
At present, LCD technology becomes increasingly popular to apply the every field in life, liquid crystal display device, feature It is that there is upper substrate, lower substrate and liquid-crystal composition, the upper substrate has the shared electricity formed by transparent conductive material Pole, the lower substrate has the pixel electrode formed by low-temperature polysilicon silicon materials and the pixel electrode to having in each pixel carries out The thin film transistor (TFT) of control, for thin-film transistor technologies (TFT-LCD) application field, although market is very huge in recent years Greatly, technology is also gradually ripe, but requirement of the people to display technology is also constantly improving, and is especially realizing quick response, Driving voltage is reduced to reduce power consumption etc..One of liquid crystal material photoelectron material important as liquid crystal display, to changing The performance of kind liquid crystal display plays an important role.
There are mainly three types of thin-film transistor technologies used in LCD screen：Alpha-Si (a-Si, amorphous silicon), IGZO (indium gallium zinc oxide), LTPS (low temperature polycrystalline silicon).
Polysilicon (Poly-Si TFT) and non-crystalline silicon (a-Si TFT), the difference of the two are transistor characteristic difference.It is more Ordered state of the molecular structure of crystal silicon in a crystal grain (Grain) is neat and directive, therefore electron mobility Non-crystalline silicon than arranging mixed and disorderly is 200-300 times fast；General so-called TFT-LCD refers to non-crystalline silicon, and technology maturation is LCD's Main product.And polysilicon product are then mainly comprising high temperature polysilicon (HTPS) and two kinds of products of low temperature polycrystalline silicon (LTPS).LTPS- TFT LCD have many advantages, such as that high-resolution, reaction speed be fast, high brightness, high aperture, in addition the silicon due to LTPS-TFT LCD Crystalline arrangement is compared with a-Si orderliness so that high 100 times or more relatively of electron mobility can make peripheral drive circuit simultaneously On the glass substrate, reach the target of system combination, save space and drive the cost of IC.Simultaneously as driving IC circuits are straight It connects and is made on panel, it is possible to reduce the external contact of component increases reliability, safeguards simpler, shortening assembling processing time And EMI characteristics are reduced, and then reduce applied system design time-histories and expand design freedom.
TFT-LCD's is configured with three layers --- one layer of liquid crystal of two panels glass substrate sandwich：The glass substrate on upper strata and Colored filter fits, and the glass substrate of lower floor then inlays thin film transistor (TFT).The operation principle of LCD screen is such： When electric current generates electric field change by transistor on lower floor's glass substrate, liquid crystal molecule is caused to deflect, uses and changes light Deflection polarity recycles polaroid to determine the light and shade state of pixel.In addition, upper strata glass is formed every because being bonded with colored filter For a pixel respectively comprising red bluish-green three color, these pixels for sending out red bluish-green color just constitute the video pictures on panel.Often The abbreviations such as IPS, TN, the VA seen are not the materials of liquid crystal display panel, but " three-layer sandwich " of panel intermediate that layer of liquid crystal molecule Arrangement mode, the response time of the visible angle of LCD screen, colour gamut area coverage and panel (whether picture has smear). And conventionally, as the limitation of carrier mobility, amorphous silicon thin film transistor-liquid crystal display is difficult to meet gently Thin, power saving and the requirement of high image quality, and low-temperature polysilicon liquid crystal on silicon displays then has that picture refreshing speed is fast, brightness is high and clear The advantages that high is spent, so, low-temperature polysilicon liquid crystal on silicon displays increasingly becomes the main product of liquid crystal display.
Since non-crystalline silicon (a-Si) TFT resolution ratio is not high enough and the physical obstacles such as response speed is slower, can not fully meet The performance requirement of the terminal applies system such as auto-navigation system, LCD TV, digital camera, therefore non-crystalline silicon (a-Si) at present TFT is also mainly used in the large-sized display devices based on display.With liquid crystal display to large capacity, high brightness and The continuous development in fine definition direction, pixel size is less and less, and the unit pixel charging time is also shorter and shorter, and this requires tools There is the ON state current of bigger.In addition, in order to solve the difficulty of high density lead, display area must be realized with peripheral driving circuit Integration, these are all that traditional handicraft can not be realized.The screen of low temperature polycrystalline silicon (LTPS) and non-crystalline silicon (a-Si TFT) phase Than the aperture opening ratio of low temperature polycrystalline silicon, electron mobility higher, that is, brightness bigger, resolution ratio higher, power consumption are lower, reliably Property is good.Therefore LTPS-TFT is the Development Technology of LCD indispensabilities of new generation.
Invention content
The object of the present invention is to provide a kind of liquid crystal display device, the liquid crystal display device, which includes, has suitable folding Penetrate rate and dielectric anisotropy, relatively low viscosity, relatively low threshold voltage liquid crystal material, the liquid crystal display device has bright The advantages of degree bigger, resolution ratio higher, power consumption are lower, better reliability.
In order to complete foregoing invention purpose, the present invention provides a kind of liquid crystal display device, comprising：Upper substrate, lower substrate, Colour filter, top electrode, lower electrode, upper alignment films, lower alignment films and liquid crystal material；The lower electrode is located on lower substrate, Lower alignment films are located on lower electrode, and the liquid crystal material is held between alignment films and lower alignment films, and top electrode, which is located at, above to be taken On film, colour filter is located in top electrode, and the lower electrode is the pixel electrode formed by low-temperature polysilicon silicon materials, the liquid crystal Liquid crystal molecule being oriented to relative to upper substrate and lower substrate general parallel orientation, the liquid crystal material in no applied voltage in material Expect for nematic phase liquid crystal composition；
The nematic phase liquid crystal composition, comprising：
Account for the compound of one or more general formulas I of the liquid-crystal composition total weight 1-30%
Account for the compound of one or more general formulas II of the liquid-crystal composition total weight 1-40%
Account for the compound of one or more general formula IIIs of the liquid-crystal composition total weight 0-30%
Account for the compound of one or more general formulae IVs of the liquid-crystal composition total weight 20-80%
Wherein,
The R1、R4、R5、R6And R7It is identical or different, carbon atom number is each independently represented for the fluoro of 1-7 or not by fluorine The alkyl in generation, the fluoro that carbon atom number is 1-7 or not by the alkoxy of fluoro or fluoro that carbon atom number is 2-7 or not by fluorine The alkenyl in generation；
The R2Fluoro that expression-F, carbon atom number are 1-7 or the fluoro for being not 1-7 by the alkyl of fluoro, carbon atom number Or not by the alkoxy of fluoro or carbon atom number for the fluoro of 2-7 or not by the alkenyl of fluoro；
The R3Fluoro that expression-H, carbon atom number are 1-7 or the fluoro for being not 1-7 by the alkyl of fluoro, carbon atom number Or not by the alkoxy of fluoro or carbon atom number for the fluoro of 2-7 or not by the alkenyl of fluoro；
The L1、L3、L4、L5、L6、L7Or L9It is identical or different, each independently represent-H or-F；
The L8Independently expression-F ,-CF3Or-OCF3
The ringIndependently represent
The ringAnd ringIt is identical or different, it each independently represents It is describedUpper one or more H can be replaced by F；
The ringAnd ringIt is identical or different, it each independently represents It is describedUpper one or more H can be replaced by F；
The ringRingRingAnd ringIt is identical or different, respectively From independently representing
The Z1And Z2It is identical or different, each independently represent singly-bound ,-COO- or-CH2O-；
The a represents 0,1 or 2, and when a is 2,2 ringsIt may be the same or different；
The d and e are identical or different, respectively independent expression 0 or 1.
The upper substrate and lower substrate independently are rigid transparent substrate or flexible transparent substrate.
In certain embodiments of the present invention, the upper substrate and lower substrate independently are rigid transparent substrate.
It is described to power on extremely indium gallium electrode.
The upper oriented layer, lower oriented layer are horizontal alignment.
In some embodiments it is preferred that ground, the compound of the general formula I account for liquid-crystal composition total weight 1-25%；Institute The compound for stating general formula II accounts for liquid-crystal composition total weight 5-40%；The compound of the general formula III accounts for liquid-crystal composition total weight 0-25%；The compound of the general formulae IV accounts for liquid-crystal composition total weight 20-75%.
In some embodiments, further preferably, the compound of the general formula I accounts for liquid-crystal composition total weight 1- 20%；The compound of the general formula II accounts for liquid-crystal composition total weight 10-40%；The compound of the general formula III accounts for liquid crystal combination Object total weight 0-25%；The compound of the general formulae IV accounts for liquid-crystal composition total weight 30-70%.
In some embodiments, further preferably, the compound of the general formula I accounts for liquid-crystal composition total weight 1- 20%；The compound of the general formula II accounts for liquid-crystal composition total weight 15-40%；The compound of the general formula III accounts for liquid crystal combination Object total weight 1-25%；The compound of the general formulae IV accounts for liquid-crystal composition total weight 30-70%.
In some embodiments, the compound of the general formula I is one or more in such as lower structure：
Wherein,
The R1And R2It is identical or different, carbon atom number is each independently represented for the fluoro of 1-7 or not by the alkane of fluoro Base, the fluoro that carbon atom number is 1-7 or not by the alkoxy of fluoro or fluoro that carbon atom number is 2-7 or not by the alkene of fluoro Base.
In some embodiments, the compound of the general formula I -1 accounts for liquid-crystal composition total weight 1-15%.
In some embodiments it is preferred that ground, the one kind or more of the compound of the general formula I -1 in such as lower structure Kind：
And
In some embodiments it is preferred that ground, the one kind or more of the compound of the general formula I -2 in such as lower structure Kind：
And
In some embodiments it is preferred that ground, the one kind or more of the compound of the general formula I -3 in such as lower structure Kind：
And
In some embodiments, the compound of the general formula II is one or more in such as lower structure：
And
Wherein,
The R3Fluoro that expression-H, carbon atom number are 1-5 or the fluoro for being not 1-7 by the alkyl of fluoro, carbon atom number Or not by the alkoxy of fluoro or carbon atom number for the fluoro of 2-5 or not by the alkenyl of fluoro.
In some embodiments, the compound of the general formula II -9 accounts for liquid-crystal composition total weight 10-25%.
In some embodiments, the compound of the general formula II -11 accounts for liquid-crystal composition total weight 5-25%.
In some embodiments it is preferred that ground, the compound of the general formula II is one or more in such as lower structure：
And
Wherein,
The R3Fluoro that expression-H, carbon atom number are 1-5 or the fluoro for being not 1-7 by the alkyl of fluoro, carbon atom number Or not by the alkoxy of fluoro or carbon atom number for the fluoro of 2-5 or not by the alkenyl of fluoro.
In some embodiments, particularly preferably, one kind in such as lower structure of the compound of the general formula II or It is a variety of：
And
Wherein,
The R3Fluoro that expression-H, carbon atom number are 1-5 or the fluoro for being not 1-7 by the alkyl of fluoro, carbon atom number Or not by the alkoxy of fluoro or carbon atom number for the fluoro of 2-5 or not by the alkenyl of fluoro.
In some embodiments, the compound of the general formula III is one or more in such as lower structure：
And
Wherein,
The R5Independently represent the carbon atom number fluoro for being 1-5 or the fluorine for being not 1-5 by the alkyl of fluoro, carbon atom number Generation or not by fluoro that the alkoxy of fluoro or carbon atom number are 2-5 or not by the alkenyl of fluoro.
In some embodiments it is preferred that ground, the compound of general formula III accounts for the liquid-crystal composition total weight 5-25%.
In some embodiments, the compound of the general formulae IV is a kind of in the group being made of following compounds or more Multiple compounds：
And
Wherein,
R6And R7It is identical or different, each independently represent the alcoxyl that alkyl, carbon atom number that carbon atom number is 1-5 are 1-5 The alkenyloxy group that the alkenyl or carbon atom number that base, carbon atom number are 2-5 are 2-5.
In some embodiments it is preferred that ground, the compound of the general formulae IV -1 accounts for the liquid-crystal composition total weight 15-60%；Further preferably；The compound of the general formulae IV -1 accounts for the 20-55% of the liquid-crystal composition total weight.
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -1 is selected from by following compounds One or more of compounds in the group of composition：
And
Wherein,
The R6Represent the alkene that alkoxy, carbon atom number that alkyl, carbon atom number that carbon atom number is 1-5 are 1-5 are 2-5 Base or the alkenyloxy group that carbon atom number is 2-5.
In certain embodiments of the present invention, particularly preferably, the compound of the general formulae IV -1 is selected from by followingization Close one or more of compounds in the group of object composition：
And
Wherein,
The R6Represent the alkene that alkoxy, carbon atom number that alkyl, carbon atom number that carbon atom number is 1-5 are 1-5 are 2-5 Base or the alkenyloxy group that carbon atom number is 2-5.
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -2 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -3 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -4 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -5 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -6 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -7 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -8 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -9 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -10 is selected from by following compounds One or more of compounds in the group of composition：
And
In certain embodiments of the present invention, it is preferable that the compound of the general formulae IV -11 is selected from by following compounds One or more of compounds in the group of composition：
And
Refer to the stabilizer that can be for example added in parent liquid crystal according to the present invention as follows.
Preferably, the stabilizer is selected from stabilizer as follows.
In embodiments of the invention, preferably described stabilizer accounts for the 0-5% of the parent liquid crystal total weight；It is more excellent Ground, the stabilizer account for the 0-2% of the liquid-crystal composition total weight；As particularly preferred scheme, the stabilizer accounts for described The 0.001-1% of liquid-crystal composition total weight.
Compared with prior art, the present invention the display device of the present invention uses low temperature polycrystalline silicon as pixel electrode layer, knot Close the present composition cause the present invention display device have high-resolution, fast response speed, high brightness, high aperture with And the advantages that low-power consumption, display device of the present invention combine one kind in the compound of general formula I, II, III and IV or The composition of a variety of formation causes the display device to have good high temperature resistant reliability with low temperature pixel electrode layer.
Description of the drawings
Fig. 1 shows the structure diagrams of the liquid crystal display of the present invention；
Specific embodiment
The code name of writing a Chinese character in simplified form of each test event represents respectively in embodiment, such as table 1：
Table 1
Wherein, optical anisotropy using abbe's refractometer under sodium lamp (589nm) light source, 25 DEG C test；Dielectric Testing cassete is VA types, and box is 6 μm thick.
VHR (initial) is obtained using TOY06254 type liquid crystal evaluation of physical property system testings；Pulse voltage：5V 6HZ, test Temperature is 60 DEG C, and the measuring unit period is 166.7ms.
Vth test conditions：C/1KHZ, JTSB7.0.
In the following embodiments, for ease of the expression of each liquid-crystal compounds, with the code liquid-crystal compounds listed by table 2 Unit structure is with representing：
The group structure code of 2 liquid-crystal compounds of table
By taking the compound of following structural formula as an example：
The structural formula is represented such as the code listed by table 2, then can be expressed as：NCGUF, the n in code represent left end alkyl Carbon atom number, such as n are " 2 ", that is, it is-C to represent the alkyl2H5；C in code represents " cyclohexyl ", and the G in code is represented " the fluoro- Isosorbide-5-Nitrae-phenylenes of 2- ", the U in code represent " 2,5- bis- fluoro- Isosorbide-5-Nitrae-phenylene ", and the F in code represents " fluoro substituents ".
In liquid-crystal composition of the present invention, the liquid-crystal composition be nematic phase liquid crystal composition, comprising it is various Liquid crystal components are compound as known in the art, and those skilled in the art can by conventional method synthesize.
Device embodiments
The liquid crystal display device of the present invention is as shown in Figure 1, it is included：Upper substrate 1, lower substrate 2, colour filter 3, top electrode 4, Lower electrode 5, upper alignment films 6, lower alignment films 7 and liquid crystal material 8；The lower electrode 5 is located on lower substrate 2, lower alignment films 7 On lower electrode 5, the liquid crystal material 8 is held between alignment films 6 and lower alignment films 7, and top electrode 4 is located at upper alignment films On 6, colour filter 3 is located in top electrode 4, and the lower electrode 5 is the pixel electrode formed by low-temperature polysilicon silicon materials, the liquid crystal Liquid crystal molecule being oriented to relative to 2 general parallel orientation of upper substrate 1 and lower substrate, the liquid in no applied voltage in material 8 Brilliant material 8 is nematic phase liquid crystal composition,
Embodiment 1
The liquid-crystal composition of embodiment 1 is configured to by each compound and weight percent listed in table 3, is filled in liquid It is tested for the property between crystal display two substrates, test data is as shown in the table：
The composition and ratio of 3 liquid-crystal composition of table
Liquid-crystal composition described in embodiment 1 is poured into display device of the present invention, the device has high-resolution It is the advantages that rate, fast response speed, high brightness, high aperture and low-power consumption, specifically reliable with good high temperature resistant Property.
Embodiment 2
The liquid-crystal composition of embodiment 2 is configured to by each compound and weight percent listed in table 4, is filled in liquid It is tested for the property between crystal display two substrates, test data is as shown in the table：
The composition and ratio of 4 liquid-crystal composition of table
Liquid-crystal composition described in embodiment 2 is poured into display device of the present invention, the device has high-resolution It is the advantages that rate, fast response speed, high brightness, high aperture and low-power consumption, specifically reliable with good high temperature resistant Property.
Embodiment 3
The liquid-crystal composition of embodiment 3 is configured to by each compound and weight percent listed in table 5, is filled in liquid It is tested for the property between crystal display two substrates, test data is as shown in the table
The composition and ratio of 5 liquid-crystal composition of table
Liquid-crystal composition described in embodiment 3 is poured into display device of the present invention, the device has high-resolution It is the advantages that rate, fast response speed, high brightness, high aperture and low-power consumption, specifically reliable with good high temperature resistant Property.
Embodiment 4
The liquid-crystal composition of embodiment 4 is configured to by each compound and weight percent listed in table 6, is filled in liquid It is tested for the property between crystal display two substrates, test data is as shown in the table：
The composition and ratio of 6 liquid-crystal composition of table
Liquid-crystal composition described in embodiment 4 is poured into display device of the present invention, the device has high-resolution It is the advantages that rate, fast response speed, high brightness, high aperture and low-power consumption, specifically reliable with good high temperature resistant Property.
Embodiment 5
The liquid-crystal composition of embodiment 5 is configured to by each compound and weight percent listed in table 7, is filled in liquid It is tested for the property between crystal display two substrates, test data is as shown in the table：
The composition and ratio of 7 liquid-crystal composition of table
Liquid-crystal composition described in embodiment 1 is poured into display device of the present invention, the device has high-resolution It is the advantages that rate, fast response speed, high brightness, high aperture and low-power consumption, specifically reliable with good high temperature resistant Property.
Embodiment 6
The liquid-crystal composition of embodiment 6 is configured to by each compound and weight percent listed in table 8, is filled in liquid It is tested for the property between crystal display two substrates, test data is as shown in the table：
The composition and ratio of 8 liquid-crystal composition of table
Liquid-crystal composition described in embodiment 6 is poured into display device of the present invention, the device has high-resolution It is the advantages that rate, fast response speed, high brightness, high aperture and low-power consumption, specifically reliable with good high temperature resistant Property.
Embodiment 7
The liquid-crystal composition of embodiment 7 is configured to by each compound and weight percent listed in table 9, is filled in liquid It is tested for the property between crystal display two substrates, test data is as shown in the table：
The composition and ratio of 9 liquid-crystal composition of table
Liquid-crystal composition described in embodiment 7 is poured into display device of the present invention, the device has high-resolution It is the advantages that rate, fast response speed, high brightness, high aperture and low-power consumption, specifically reliable with good high temperature resistant Property.
Embodiment 8
The liquid-crystal composition of embodiment 8 is configured to by each compound and weight percent listed in table 9, is filled in liquid It is tested for the property between crystal display two substrates, test data is as shown in the table：
The composition and ratio of 10 liquid-crystal composition of table
Liquid-crystal composition described in embodiment 8 is poured into display device of the present invention, the device has high-resolution It is the advantages that rate, fast response speed, high brightness, high aperture and low-power consumption, specifically reliable with good high temperature resistant Property.
Material used in the present invention is commercial material, can be bought from commercially available approach.
Above example is expounded the principle of the present invention and embodiment, and the explanation of above example is only used for helping Help and understand the method and its core concept of the present invention；Meanwhile those of ordinary skill in the art, thought according to the present invention, There will be changes in its concrete mode and its application range, in conclusion the information of specification should not be construed as to this hair Bright limitation.

Claims (10)

1. a kind of liquid crystal display device, the liquid crystal display device, comprising：Upper substrate (1), lower substrate (2), colour filter (3), on Electrode (4), lower electrode (5), upper alignment films (6), lower alignment films (7) and liquid crystal material (8)；The lower electrode (5) is located at On lower substrate (2), lower alignment films (7) on lower electrode (5), the liquid crystal material (8) be held on alignment films (6) and under take Between film (7), top electrode (4) is in upper alignment films (6), and colour filter (3) is in top electrode (4), which is characterized in that institute It is the pixel electrode formed by low-temperature polysilicon silicon materials to state lower electrode (5), and the liquid crystal molecule in the liquid crystal material (8) is not being applied Being oriented to relative to upper substrate (1) and lower substrate (2) general parallel orientation during making alive, the liquid crystal material (8) is nematic phase liquid Crystal composite；
The nematic phase liquid crystal composition, comprising：
Account for the compound of one or more general formulas I of the liquid-crystal composition total weight 1-30%
Account for the compound of one or more general formulas II of the liquid-crystal composition total weight 1-40%
Account for the compound of one or more general formula IIIs of the liquid-crystal composition total weight 0-30%
Account for the compound of one or more general formulae IVs of the liquid-crystal composition total weight 20-80%
Wherein,
The R1、R4、R5、R6And R7It is identical or different, carbon atom number is each independently represented for the fluoro of 1-7 or not by fluoro Alkyl, the fluoro that carbon atom number is 1-7 or not by the alkoxy of fluoro or fluoro that carbon atom number is 2-7 or not by fluoro Alkenyl；
The R2Fluoro that expression-F, carbon atom number are 1-7 or not by the alkyl of fluoro, carbon atom number be 1-7 fluoro or not by The alkoxy or carbon atom number of fluoro are for the fluoro of 2-7 or not by the alkenyl of fluoro；
The R3Fluoro that expression-H, carbon atom number are 1-7 or not by the alkyl of fluoro, carbon atom number be 1-7 fluoro or not by The alkoxy or carbon atom number of fluoro are for the fluoro of 2-7 or not by the alkenyl of fluoro；
The L1、L3、L4、L5、L6、L7Or L9It is identical or different, each independently represent-H or-F；
The L8Independently expression-F ,-CF3Or-OCF3
The ringIndependently represent
The ringAnd ringIt is identical or different, it each independently represents It is described Upper one or more H can be replaced by F；
The ringAnd ringIt is identical or different, it each independently representsOrIt is describedUpper one or more H can be replaced by F；
The ringRingRingAnd ringIt is identical or different, respectively solely On the spot represent
The Z1And Z2It is identical or different, each independently represent singly-bound ,-COO- or-CH2O-；
The a represents 0,1 or 2, and when a is 2,2 ringsIt may be the same or different；
The d and e are identical or different, respectively independent expression 0 or 1.
2. liquid crystal display device according to claim 1, which is characterized in that the upper substrate and lower substrate independently are firm Property transparent substrate or flexible transparent substrate.
3. liquid crystal display device according to claim 2, which is characterized in that the upper substrate and lower substrate independently are firm Property transparent substrate.
4. liquid crystal display device according to claim 1, which is characterized in that power on extremely indium gallium electrode.
5. liquid crystal display device according to claim 1, which is characterized in that the upper alignment films, lower alignment films are water Flat alignment films.
6. liquid crystal display device according to any one of claims 1-5, which is characterized in that the compound of the general formula I It is one or more in such as lower structure：
Wherein,
The R1And R2It is identical or different, carbon atom number is each independently represented for the fluoro of 1-7 or not by the alkyl of fluoro, carbon Fluoro that atomicity is 1-7 or not by the alkoxy of fluoro or fluoro that carbon atom number is 2-7 or not by the alkenyl of fluoro.
7. liquid crystal display device according to any one of claims 1-5, which is characterized in that the compound of the general formula II It is one or more in such as lower structure：
And
Wherein,
The R3Fluoro that expression-H, carbon atom number are 1-5 or not by the alkyl of fluoro, carbon atom number be 1-7 fluoro or not by The alkoxy or carbon atom number of fluoro are for the fluoro of 2-5 or not by the alkenyl of fluoro.
8. liquid crystal display device according to any one of claims 1-5, which is characterized in that the compound of the general formula III It is one or more in such as lower structure：
And
Wherein,
The R5Independently represent carbon atom number be 1-5 fluoro or not by the alkyl of fluoro, carbon atom number be 1-5 fluoro or Not by the alkoxy of fluoro or carbon atom number for the fluoro of 2-5 or not by the alkenyl of fluoro.
9. liquid crystal display device according to any one of claims 1-5, which is characterized in that the compound of the general formulae IV One or more of compounds in the group being made of following compounds：
And
Wherein,
R6And R7It is identical or different, each independently represent alkoxy that alkyl, carbon atom number that carbon atom number is 1-5 are 1-5, The alkenyloxy group that the alkenyl or carbon atom number that carbon atom number is 2-5 are 2-5.
10. liquid crystal display device according to any one of claims 1-5, which is characterized in that the liquid-crystal composition is also Include one or more additives.
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